STATION ASTARA (40709) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 38 25 N LONGITUDE 48 52 E DATA PROCESSING CENTER ELEVATION -18.0 M MEANS AND EXTREMES FOR THE YEAR 1986 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AIR TEMPERATURE (C) 7.3 5.1 6.2 14.4 17.8 23.6 26.7 27.2 23.6 17.1 10.5 6.9 15.5 MINIMUN AIR TEMPERATURE (C) 3.1 2.9 3.4 10.1 13.8 17.9 20.8 20.3 17.8 14.1 8.8 2.8 11.3 DAYS WITH MINIMUM TEMP. >=21 0 0 0 0 0 0 18 14 2 0 0 0 34 DAYS WITH MINIMUM TEMP. <=-4 0 0 0 0 0 0 0 0 0 0 0 0 0 DAYS WITH FREEZING MIN.<= 0 5 4 3 0 0 0 0 0 0 0 0 5 17 TEMPERATURE RECORDS LOWEST(C) -2.0 -0.6 -1.0 7.0 9.2 13.4 17.0 16.4 11.4 11.0 5.0 -2.2 -2.2 DAY 21 8 3 2 18 23 3 30 30 13 30 13 MAXIMUM AIR TEMPERATURE (C) 10.0 7.3 8.0 17.0 20.1 26.2 29.2 30.2 26.3 19.0 11.8 11.8 18.1 DAYS WITH MAXIMUM TEMP. >=30 0 0 0 1 0 0 11 21 5 0 0 0 38 DAYS WITH MAXIMUM TEMP. <= 0 0 0 0 0 0 0 0 0 0 0 0 0 0 TEMPERATURE RECORDS HIGHEST(C) 21.0 15.0 12.4 30.0 26.4 29.6 31.8 33.2 32.2 24.2 19.4 23.0 33.2 DAY 18 20 29 15 26 7 5 16 4 5 2 27 DIF. BETWEEN (MAX.-MIN.) (C) 6.9 4.4 4.6 6.9 6.3 8.3 8.4 9.9 8.5 4.9 3.0 9.0 6.8 MEAN DAILY TEMP. (MDT) (C) 6.5 5.1 5.7 13.5 16.9 22.1 25.0 25.2 22.1 16.6 10.3 7.3 14.7 COOLING DEG. DAYS(BASE 21 0C) 0.0 0.0 0.0 1.0 1.1 47.9 124.3 130.8 52.3 0.0 0.0 0.0 357.5 HEATING DEG. DAYS(BASE 18 0C) 355.0 361.1 380.9 137.8 55.5 2.5 0.0 0.0 8.1 51.9 230.2 331.9 1915.0 DEWPOINT (MEAN C) 4.3 3.6 4.0 10.9 14.3 18.3 21.0 21.4 19.8 15.3 9.1 4.2 12.2 MIXING RATIO (G/KG) 5.20 4.91 5.01 8.08 10.29 13.35 15.77 16.16 14.65 10.80 7.30 5.16 9.72 VAPOUR PRESSURE (HPA) 8.46 8.00 8.21 13.08 16.53 21.25 25.03 25.68 23.42 17.46 11.87 8.41 15.62 SATURATION DEF. (HPA) 2.04 0.94 1.43 3.78 4.31 8.44 10.53 11.06 6.60 2.24 1.23 2.08 4.56 RELATIVE HUMIDITY (MEAN %) 83 90 86 81 81 73 72 72 81 89 91 84 82 RELATIVE HUMIDITY (MAX. %) 92 96 94 92 92 87 88 88 93 97 96 93 92 RELATIVE HUMIDITY (MIN. %) 73 84 79 72 71 63 62 59 71 83 85 71 73 RELATIVE HUMIDITY (MEAN% 03UTC) 88 94 93 90 90 86 88 87 92 96 93 88 90 RELATIVE HUMIDITY (MEAN% 09UTC) 77 86 82 76 76 66 65 66 75 84 87 77 76 RELATIVE HUMIDITY (MEAN% 15UTC) 87 92 86 81 83 76 73 75 85 92 94 87 84 RH=0 => RELATIVE HUMIDITY < 0.5% AMOUNT OF PRECIPITATION MM. 108.8 81.7 131.2 28.8 37.0 39.2 30.3 10.2 308.1 231.1 219.8 105.0 1331.2 DAYS WITH PRECIPITATION >=10 4 2 5 0 1 2 1 0 4 9 12 2 42 DAYS WITH PRECIPITATION >= 5 5 8 10 3 2 3 1 1 6 10 16 4 69 DAYS WITH PRECIPITATION >= 1 6 8 14 6 10 4 2 2 10 14 20 8 104 DAYS WITH PRECIPITATION 11 12 15 13 19 11 8 4 12 20 27 9 161 GREATEST DAILY PRECIPITATION 57.4 19.1 23.0 9.0 13.0 17.0 28.0 7.0 123.0 49.0 24.3 40.0 123.0 DAY 20 1 16 3 8 20 18 24 21 14 23 9 DAY WITH THUNDER STORM 0 0 0 0 8 3 0 1 1 0 0 0 13 DAYS WITH SNOW OR SLEET 2 1 2 0 0 0 0 0 0 0 0 1 6 DAYS WITH DUST 0 0 0 0 0 0 3 4 1 0 0 3 11 WIND DIRECTION (PREVAILING) 360 360 135 135 135 135 135 135 135 360 360 315 135 PREVAILING WIND SPEED(KNOTS) 4.9 5.0 6.5 5.0 5.8 6.2 5.8 7.0 6.8 5.0 5.4 6.0 6.1 PREVAILING WIND PERCENT 9.7 17.9 15.5 22.7 30.3 28.7 20.6 25.2 19.3 14.8 33.3 14.8 15.1 CALMS PERCENT OF WIND 50.3 55.0 47.7 41.3 36.8 28.7 41.3 33.5 36.0 58.7 35.3 49.8 43.1 NO. OF WIND OBSERVATION 155 140 155 150 155 150 155 155 150 155 150 229 1899 VECTOR WIND DIRECTION (MEAN) 229 15 124 125 136 132 121 112 102 9 340 273 103 VECTOR WIND MAGNITUDE(KNOTS) 0.3 1.1 0.8 1.7 2.3 2.3 2.0 2.4 1.3 1.0 3.1 1.4 0.7 WIND STEADINESES (MEAN %) 10.3 47.8 27.6 56.7 62.2 51.1 60.6 57.1 33.3 47.6 86.1 35.9 20.6 WIND SPEED (MEAN KNOTS) 2.9 2.3 2.9 3.0 3.7 4.5 3.3 4.2 3.9 2.1 3.6 3.9 3.4 FASTEST WIND DIRECTION 220 30 150 210 180 140 10 360 40 330 340 240 240 FASTEST WIND SPEED (KNOTS) 19 14 16 14 16 16 12 14 16 14 14 49 49 DAY 18 27 12 15 9 12 10 3 7 23 10 27 DAYS WITH SKY CLEAR (0-2)/8 6 1 4 2 8 15 15 20 16 2 2 10 101 DAYS WITH P.CLOUDY (3-6)/8 11 5 7 13 10 11 11 8 3 11 2 13 105 DAYS WITH CLOUDY (7-8)/8 14 22 20 15 13 4 5 3 11 18 26 8 159 DAYS WITH VISIBILITY =< 2 KM 2 4 5 5 2 0 1 0 2 4 0 2 27 DURATION OF SUNSHINE HOURS 106.7 50.5 71.0 141.6 155.2 236.2 252.5 282.7 202.8 74.2 28.4 131.6 1733.4 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ASTARA (40709) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 38 25 N LONGITUDE 48 52 E DATA PROCESSING CENTER ELEVATION -18.0 M MEANS AND EXTREMES FOR THE YEAR 1986 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL MEAN QFE PRESSURE IN HPA 1022.1 1022.4 1027.8 1020.7 1016.5 1011.9 1013.4 1014.6 1018.8 1023.0 1025.5 1022.8 1019.9 MAX. QFE PRESSURE IN HPA 1036.6 1031.0 1039.6 1030.1 1028.4 1018.8 1020.9 1019.8 1030.8 1035.2 1037.0 1044.2 1044.2 DAY-HOUR 23- 6 13- 6 16- 6 5- 6 17- 9 3- 6 1- 9 3- 9 29-15 14-12 15- 6 10- 6 MIN. QFE PRESSURE IN HPA 1009.8 1009.2 1016.8 1006.9 999.1 1003.6 1003.8 1005.3 1012.3 1010.0 1008.2 1000.5 999.1 DAY-HOUR 18-12 4- 3 9-15 15-15 3-15 12-12 9-15 22-15 5-15 23- 3 9-12 27-12 MEAN QNH PRESSURE IN HPA 1019.6 1019.9 1025.3 1018.3 1014.0 1009.5 1011.0 1012.1 1016.3 1020.5 1023.0 1020.3 1017.5 MAX. QNH PRESSURE IN HPA 1034.1 1028.5 1037.1 1027.6 1025.9 1016.3 1018.4 1017.3 1028.3 1032.7 1034.5 1041.7 1041.7 DAY-HOUR 23- 6 13- 6 16- 6 5- 6 17- 9 3- 6 1- 9 3- 9 29-15 14-12 15- 6 10- 6 MIN. QNH PRESSURE IN HPA 1007.3 1006.7 1014.3 1004.4 996.7 1001.2 1001.4 1002.9 1009.8 1007.5 1005.7 998.1 996.7 DAY-HOUR 18-12 4- 3 9-15 15-15 3-15 12-12 9-15 22-15 5-15 23- 3 9-12 27-12 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1020.1 ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1041.9 ****** DAY-HOUR **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** 10- 6 MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 998.4 ****** DAY-HOUR **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** 27-12 PRESSURE AT HOUR 0000 UTC. MEAN QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1022.2 ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1043.4 ****** DAY ** ** ** ** ** ** ** ** ** ** ** 10 MIN. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1003.3 ****** DAY ** ** ** ** ** ** ** ** ** ** ** 27 MEAN QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1019.7 ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1040.9 ****** DAY ** ** ** ** ** ** ** ** ** ** ** 10 MIN. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1000.9 ****** DAY ** ** ** ** ** ** ** ** ** ** ** 27 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1020.0 ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1041.1 ****** DAY ** ** ** ** ** ** ** ** ** ** ** 10 MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1001.2 ****** DAY ** ** ** ** ** ** ** ** ** ** ** 27 PRESSURE AT HOUR 0300 UTC. MEAN QFE PRESSURE IN HPA 1021.7 1022.0 1027.4 1020.2 1016.6 1012.0 1013.8 1014.8 1018.9 1022.8 1025.2 1022.9 1019.9 MAX. QFE PRESSURE IN HPA 1034.1 1030.2 1036.2 1029.1 1027.1 1017.6 1019.8 1018.8 1029.3 1032.1 1034.8 1043.0 1043.0 DAY 23 13 16 5 17 3 2 4 30 15 15 10 MIN. QFE PRESSURE IN HPA 1010.0 1009.2 1018.0 1009.8 1001.6 1006.0 1007.0 1008.0 1012.7 1010.0 1009.5 1003.1 1001.6 DAY 18 4 10 15 3 13 9 15 20 23 9 27 MEAN QNH PRESSURE IN HPA 1019.3 1019.5 1024.9 1017.7 1014.2 1009.6 1011.3 1012.3 1016.5 1020.4 1022.7 1020.4 1017.4 MAX. QNH PRESSURE IN HPA 1031.6 1027.7 1033.7 1026.6 1024.6 1015.1 1017.3 1016.3 1026.8 1029.6 1032.3 1040.5 1040.5 DAY 23 13 16 5 17 3 2 4 30 15 15 10 MIN. QNH PRESSURE IN HPA 1007.5 1006.7 1015.5 1007.3 999.2 1003.6 1004.5 1005.5 1010.2 1007.5 1007.0 1000.7 999.2 DAY 18 4 10 15 3 13 9 15 20 23 9 27 MEAN QFF PRESSURE IN HPA 1019.5 1019.8 1025.1 1018.0 1014.5 1009.9 1011.7 1012.7 1016.8 1020.7 1022.9 1020.7 1017.7 MAX. QFF PRESSURE IN HPA 1031.8 1027.9 1033.9 1026.9 1024.9 1015.5 1017.7 1016.7 1027.1 1029.9 1032.5 1040.7 1040.7 DAY 23 13 16 5 17 3 2 4 30 15 15 10 MIN. QFF PRESSURE IN HPA 1007.8 1007.0 1015.8 1007.7 999.5 1003.9 1005.0 1005.9 1010.6 1007.9 1007.3 1001.0 999.5 DAY 18 4 10 15 3 13 9 15 20 23 9 27 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ASTARA (40709) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 38 25 N LONGITUDE 48 52 E DATA PROCESSING CENTER ELEVATION -18.0 M MEANS AND EXTREMES FOR THE YEAR 1986 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 0600 UTC. MEAN QFE PRESSURE IN HPA 1023.3 1023.3 1028.9 1021.7 1017.1 1012.6 1014.5 1015.7 1019.9 1024.0 1026.4 1024.1 1021.0 MAX. QFE PRESSURE IN HPA 1036.6 1031.0 1039.6 1030.1 1028.1 1018.8 1020.8 1019.7 1029.0 1034.5 1037.0 1044.2 1044.2 DAY 23 13 16 5 17 3 1 3 30 14 15 10 MIN. QFE PRESSURE IN HPA 1010.8 1012.0 1021.1 1010.1 1001.9 1006.1 1007.3 1008.9 1014.8 1016.0 1010.0 1003.3 1001.9 DAY 18 4 10 15 3 12 9 15 6 4 9 27 MEAN QNH PRESSURE IN HPA 1020.8 1020.8 1026.4 1019.2 1014.7 1010.1 1012.0 1013.2 1017.4 1021.5 1024.0 1021.7 1018.5 MAX. QNH PRESSURE IN HPA 1034.1 1028.5 1037.1 1027.6 1025.6 1016.3 1018.3 1017.2 1026.5 1032.0 1034.5 1041.7 1041.7 DAY 23 13 16 5 17 3 1 3 30 14 15 10 MIN. QNH PRESSURE IN HPA 1008.3 1009.5 1018.6 1007.6 999.5 1003.7 1004.8 1006.4 1012.3 1013.5 1007.5 1000.9 999.5 DAY 18 4 10 15 3 12 9 15 6 4 9 27 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1020.6 ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1041.9 ****** DAY ** ** ** ** ** ** ** ** ** ** ** 10 MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1001.2 ****** DAY ** ** ** ** ** ** ** ** ** ** ** 27 PRESSURE AT HOUR 0900 UTC. MEAN QFE PRESSURE IN HPA 1022.0 1022.6 1028.2 1021.4 1016.9 1012.3 1014.0 1015.0 1019.1 1023.1 1025.5 1022.6 1020.2 MAX. QFE PRESSURE IN HPA 1034.8 1030.0 1038.7 1029.5 1028.4 1018.8 1020.9 1019.8 1026.8 1035.0 1036.6 1043.6 1043.6 DAY 28 12 16 19 17 20 1 3 29 14 15 10 MIN. QFE PRESSURE IN HPA 1010.2 1011.8 1019.5 1009.3 1002.1 1005.2 1006.6 1008.2 1013.8 1013.9 1009.1 1001.6 1001.6 DAY 18 6 9 15 3 12 9 15 24 22 9 27 MEAN QNH PRESSURE IN HPA 1019.6 1020.1 1025.7 1018.9 1014.5 1009.8 1011.5 1012.5 1016.6 1020.6 1023.0 1020.1 1017.7 MAX. QNH PRESSURE IN HPA 1032.3 1027.5 1036.2 1027.0 1025.9 1016.3 1018.4 1017.3 1024.3 1032.5 1034.1 1041.1 1041.1 DAY 28 12 16 19 17 20 1 3 29 14 15 10 MIN. QNH PRESSURE IN HPA 1007.7 1009.3 1017.0 1006.8 999.7 1002.8 1004.2 1005.7 1011.3 1011.4 1006.6 999.2 999.2 DAY 18 6 9 15 3 12 9 15 24 22 9 27 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1019.0 ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1041.3 ****** DAY ** ** ** ** ** ** ** ** ** ** ** 10 MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 999.5 ****** DAY ** ** ** ** ** ** ** ** ** ** ** 27 PRESSURE AT HOUR 1200 UTC. MEAN QFE PRESSURE IN HPA 1021.4 1021.7 1027.0 1020.4 1015.9 1011.5 1012.8 1014.0 1018.0 1022.4 1025.0 1022.0 1019.3 MAX. QFE PRESSURE IN HPA 1033.6 1029.0 1037.6 1028.5 1028.0 1017.8 1018.6 1019.3 1028.5 1035.2 1036.0 1042.9 1042.9 DAY 28 12 16 19 17 20 1 3 29 14 15 10 MIN. QFE PRESSURE IN HPA 1009.8 1010.0 1017.2 1007.5 1001.1 1003.6 1004.9 1006.6 1012.8 1012.2 1008.2 1000.5 1000.5 DAY 18 6 9 15 3 12 9 22 24 22 9 27 MEAN QNH PRESSURE IN HPA 1018.9 1019.2 1024.5 1017.9 1013.4 1009.1 1010.3 1011.5 1015.5 1019.9 1022.5 1019.6 1016.9 MAX. QNH PRESSURE IN HPA 1031.1 1026.5 1035.1 1026.0 1025.5 1015.3 1016.1 1016.8 1026.0 1032.7 1033.5 1040.4 1040.4 DAY 28 12 16 19 17 20 1 3 29 14 15 10 MIN. QNH PRESSURE IN HPA 1007.3 1007.5 1014.7 1005.0 998.7 1001.2 1002.5 1004.2 1010.3 1009.7 1005.7 998.1 998.1 DAY 18 6 9 15 3 12 9 22 24 22 9 27 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1018.4 ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1040.6 ****** DAY ** ** ** ** ** ** ** ** ** ** ** 10 MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 998.4 ****** DAY ** ** ** ** ** ** ** ** ** ** ** 27 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ASTARA (40709) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 38 25 N LONGITUDE 48 52 E DATA PROCESSING CENTER ELEVATION -18.0 M MEANS AND EXTREMES FOR THE YEAR 1986 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 1500 UTC. MEAN QFE PRESSURE IN HPA 1022.2 1022.3 1027.4 1020.1 1015.8 1011.2 1012.2 1013.6 1018.0 1022.6 1025.3 1023.2 1019.5 MAX. QFE PRESSURE IN HPA 1034.0 1029.8 1037.7 1028.7 1027.3 1017.0 1018.4 1019.2 1030.8 1035.0 1035.5 1042.8 1042.8 DAY 28 12 16 19 17 20 1 3 29 14 15 10 MIN. QFE PRESSURE IN HPA 1010.6 1011.0 1016.8 1006.9 999.1 1004.3 1003.8 1005.3 1012.3 1011.5 1009.4 1003.3 999.1 DAY 18 3 9 15 3 12 9 22 5 22 9 27 MEAN QNH PRESSURE IN HPA 1019.7 1019.8 1024.9 1017.7 1013.3 1008.7 1009.7 1011.1 1015.5 1020.2 1022.9 1020.7 1017.0 MAX. QNH PRESSURE IN HPA 1031.5 1027.3 1035.2 1026.2 1024.8 1014.5 1015.9 1016.7 1028.3 1032.5 1033.0 1040.3 1040.3 DAY 28 12 16 19 17 20 1 3 29 14 15 10 MIN. QNH PRESSURE IN HPA 1008.1 1008.5 1014.3 1004.4 996.7 1001.9 1001.4 1002.9 1009.8 1009.0 1006.9 1000.9 996.7 DAY 18 3 9 15 3 12 9 22 5 22 9 27 MEAN QFF PRESSURE IN HPA 1020.0 1020.0 1025.1 1017.9 1013.6 1009.1 1010.1 1011.5 1015.8 1020.5 1023.1 1020.9 1017.3 MAX. QFF PRESSURE IN HPA 1031.7 1027.5 1035.4 1026.5 1025.1 1014.9 1016.3 1017.1 1028.6 1032.8 1033.2 1040.5 1040.5 DAY 28 12 16 19 17 20 1 3 29 14 15 10 MIN. QFF PRESSURE IN HPA 1008.4 1008.7 1014.6 1004.8 997.0 1002.2 1001.8 1003.2 1010.2 1009.4 1007.2 1001.2 997.0 DAY 18 3 9 15 3 12 9 22 5 22 9 27 PRESSURE AT HOUR 1800 UTC. MEAN QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1022.7 ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1043.5 ****** DAY ** ** ** ** ** ** ** ** ** ** ** 10 MIN. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1004.2 ****** DAY ** ** ** ** ** ** ** ** ** ** ** 27 MEAN QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1020.2 ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1041.0 ****** DAY ** ** ** ** ** ** ** ** ** ** ** 10 MIN. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1001.8 ****** DAY ** ** ** ** ** ** ** ** ** ** ** 27 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1020.4 ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1041.2 ****** DAY ** ** ** ** ** ** ** ** ** ** ** 10 MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1002.1 ****** DAY ** ** ** ** ** ** ** ** ** ** ** 27 PRESSURE AT HOUR 2100 UTC. MEAN QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1022.5 ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1043.1 ****** DAY ** ** ** ** ** ** ** ** ** ** ** 10 MIN. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1003.3 ****** DAY ** ** ** ** ** ** ** ** ** ** ** 26 MEAN QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1020.0 ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1040.6 ****** DAY ** ** ** ** ** ** ** ** ** ** ** 10 MIN. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1000.9 ****** DAY ** ** ** ** ** ** ** ** ** ** ** 26 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1020.3 ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1040.8 ****** DAY ** ** ** ** ** ** ** ** ** ** ** 10 MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1001.2 ****** DAY ** ** ** ** ** ** ** ** ** ** ** 26 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ASTARA (40709) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 38 25 N LONGITUDE 48 52 E DATA PROCESSING CENTER ELEVATION -18.0 M MEANS AND EXTREMES FOR THE YEAR 1987 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AIR TEMPERATURE (C) 7.4 6.0 6.9 10.0 17.9 23.3 24.4 24.2 19.9 13.0 10.5 6.8 14.2 MINIMUN AIR TEMPERATURE (C) 4.3 3.6 5.1 6.9 14.3 18.9 19.8 20.7 16.8 11.0 8.0 4.4 11.2 DAYS WITH MINIMUM TEMP. >=21 0 0 0 0 0 4 8 12 2 0 0 0 26 DAYS WITH MINIMUM TEMP. <=-4 0 0 0 0 0 0 0 0 0 0 0 0 0 DAYS WITH FREEZING MIN.<= 0 0 0 0 0 0 0 0 0 0 0 0 2 2 TEMPERATURE RECORDS LOWEST(C) 0.6 0.4 1.6 1.8 8.6 16.0 15.6 14.2 11.4 5.8 0.4 -2.0 -2.0 DAY 12 12 3 6 1 1 4 30 24 28 30 29 MAXIMUM AIR TEMPERATURE (C) 11.1 9.3 9.0 13.7 22.0 27.8 28.9 28.1 23.5 15.7 13.7 10.8 17.8 DAYS WITH MAXIMUM TEMP. >=30 0 0 0 0 0 8 12 9 0 0 0 0 29 DAYS WITH MAXIMUM TEMP. <= 0 0 0 0 0 0 0 0 0 0 0 0 0 0 TEMPERATURE RECORDS HIGHEST(C) 22.6 25.0 12.4 24.0 29.5 33.0 32.5 34.2 26.8 25.4 26.6 23.0 34.2 DAY 30 26 5 13 23 20 20 8 16 2 21 12 DIF. BETWEEN (MAX.-MIN.) (C) 6.8 5.7 3.9 6.8 7.7 8.9 9.1 7.4 6.7 4.7 5.7 6.4 6.6 MEAN DAILY TEMP. (MDT) (C) 7.7 6.5 7.1 10.3 18.2 23.4 24.4 24.4 20.1 13.3 10.8 7.6 14.5 COOLING DEG. DAYS(BASE 21 0C) 0.0 0.0 0.0 0.0 4.7 74.5 104.8 107.3 13.5 1.1 0.0 0.0 305.9 HEATING DEG. DAYS(BASE 18 0C) 319.9 322.9 338.7 231.2 28.2 0.0 0.0 0.0 7.6 151.5 215.3 322.3 1937.7 DEWPOINT (MEAN C) 4.9 4.4 4.5 7.0 14.0 16.9 18.9 20.2 17.5 11.2 7.9 4.7 11.0 MIXING RATIO (G/KG) 5.37 5.14 5.24 6.28 10.16 12.27 13.86 15.05 12.64 8.34 6.67 5.36 8.87 VAPOUR PRESSURE (HPA) 8.74 8.40 8.51 10.18 16.32 19.60 22.08 23.92 20.28 13.59 10.86 8.73 14.27 SATURATION DEF. (HPA) 1.93 1.18 1.46 2.31 4.67 9.64 9.06 6.88 3.35 1.80 2.08 1.44 3.82 RELATIVE HUMIDITY (MEAN %) 87 91 86 83 80 70 74 80 87 89 85 87 83 RELATIVE HUMIDITY (MAX. %) 97 97 95 96 96 89 92 93 97 96 94 96 95 RELATIVE HUMIDITY (MIN. %) 72 80 75 66 60 49 55 64 74 80 70 73 68 RELATIVE HUMIDITY (MEAN% 03UTC) 87 94 92 90 90 78 87 88 94 93 89 92 90 RELATIVE HUMIDITY (MEAN% 09UTC) 82 84 77 76 65 56 60 68 76 82 73 79 73 RELATIVE HUMIDITY (MEAN% 15UTC) 89 89 84 79 76 67 67 78 88 91 87 86 82 RH=0 => RELATIVE HUMIDITY < 0.5% AMOUNT OF PRECIPITATION MM. 79.1 82.8 89.5 64.0 19.0 6.1 84.8 138.0 287.0 296.7 36.9 116.6 1300.5 DAYS WITH PRECIPITATION >=10 2 3 3 2 1 0 3 3 7 8 2 5 39 DAYS WITH PRECIPITATION >= 5 5 6 6 4 1 0 3 6 10 13 2 8 64 DAYS WITH PRECIPITATION >= 1 10 13 10 7 4 2 3 7 14 20 5 11 106 DAYS WITH PRECIPITATION 16 18 20 16 9 8 4 13 16 24 9 13 166 GREATEST DAILY PRECIPITATION 23.0 15.0 27.0 19.0 11.2 4.0 53.2 50.3 85.3 82.0 18.1 27.0 85.3 DAY 6 27 14 4 29 4 3 16 1 3 7 5 DAY WITH THUNDER STORM 0 0 0 1 5 3 2 1 1 4 0 0 17 DAYS WITH SNOW OR SLEET 1 2 0 0 0 0 0 0 0 0 2 3 8 DAYS WITH DUST 0 2 0 0 1 2 0 0 0 0 0 1 6 WIND DIRECTION (PREVAILING) 360 360 180 135 135 135 135 135 225 315 360 360 360 PREVAILING WIND SPEED(KNOTS) 5.2 4.8 5.4 6.6 6.0 6.0 5.3 5.0 2.5 7.1 5.6 5.0 5.4 PREVAILING WIND PERCENT 18.1 19.6 13.3 20.0 19.8 10.8 16.6 10.1 8.8 16.9 11.7 16.1 10.7 CALMS PERCENT OF WIND 53.6 59.8 50.8 42.5 51.6 49.2 49.8 57.3 57.3 47.6 67.9 56.9 53.6 NO. OF WIND OBSERVATION 248 224 248 240 248 240 247 248 239 248 240 248 2918 VECTOR WIND DIRECTION (MEAN) 309 355 109 138 144 106 124 100 19 337 351 343 59 VECTOR WIND MAGNITUDE(KNOTS) 0.7 0.9 0.6 1.6 1.6 0.8 1.0 0.6 0.1 1.8 1.1 1.1 0.3 WIND STEADINESES (MEAN %) 22.6 42.9 22.2 44.4 59.3 28.6 40.0 28.6 5.9 64.3 64.7 45.8 12.0 WIND SPEED (MEAN KNOTS) 3.1 2.1 2.7 3.6 2.7 2.8 2.5 2.1 1.7 2.8 1.7 2.4 2.5 FASTEST WIND DIRECTION 240 240 160 10 220 160 330 60 360 330 360 240 240 FASTEST WIND SPEED (KNOTS) 29 29 16 19 17 16 14 10 14 16 12 25 29 DAY 9 25 22 19 12 3 3 1 18 25 3 12 DAYS WITH SKY CLEAR (0-2)/8 5 3 1 7 4 15 19 12 6 2 7 6 87 DAYS WITH P.CLOUDY (3-6)/8 9 5 5 9 16 11 8 6 11 7 5 6 98 DAYS WITH CLOUDY (7-8)/8 17 20 25 14 11 4 4 13 13 22 18 19 180 DAYS WITH VISIBILITY =< 2 KM 5 8 6 11 2 0 1 0 1 7 1 8 50 DURATION OF SUNSHINE HOURS 83.8 68.7 45.4 150.2 181.2 227.8 290.1 164.8 123.7 54.8 87.3 76.2 1554.0 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ASTARA (40709) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 38 25 N LONGITUDE 48 52 E DATA PROCESSING CENTER ELEVATION -18.0 M MEANS AND EXTREMES FOR THE YEAR 1987 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL MEAN QFE PRESSURE IN HPA 1022.2 1024.2 1019.3 1020.4 1016.4 1013.8 1013.1 1013.2 1018.9 1028.4 1025.6 1021.8 1019.8 MAX. QFE PRESSURE IN HPA 1042.1 1040.6 1032.3 1030.9 1028.3 1021.7 1023.0 1021.0 1029.2 1039.0 1044.2 1039.4 1044.2 DAY-HOUR 31-21 1- 0 22-18 1- 6 13- 6 6- 6 10- 9 8- 6 23- 6 26- 6 30- 6 1- 0 MIN. QFE PRESSURE IN HPA 1008.3 1005.6 1001.5 1000.0 1002.3 1005.2 1003.8 1004.6 1008.0 1014.8 1009.4 1005.0 1000.0 DAY-HOUR 9-21 25-12 19-12 19-12 23- 0 2- 3 6-15 18- 0 5-12 2-12 21- 3 23-12 MEAN QNH PRESSURE IN HPA 1019.7 1021.7 1016.9 1017.9 1014.0 1011.3 1010.7 1010.7 1016.4 1025.9 1023.1 1019.3 1017.3 MAX. QNH PRESSURE IN HPA 1039.6 1038.1 1029.8 1028.4 1025.8 1019.2 1020.5 1018.5 1026.7 1036.5 1041.7 1036.9 1041.7 DAY-HOUR 31-21 1- 0 22-18 1- 6 13- 6 6- 6 10- 9 8- 6 23- 6 26- 6 30- 6 1- 0 MIN. QNH PRESSURE IN HPA 1005.8 1003.2 999.1 997.6 999.9 1002.8 1001.4 1002.2 1005.5 1012.3 1006.9 1002.6 997.6 DAY-HOUR 9-21 25-12 19-12 19-12 23- 0 2- 3 6-15 18- 0 5-12 2-12 21- 3 23-12 MEAN QFF PRESSURE IN HPA 1019.9 1021.9 1017.1 1018.2 1014.3 1011.7 1011.1 1011.1 1016.7 1026.2 1023.4 1019.5 1017.6 MAX. QFF PRESSURE IN HPA 1039.8 1038.3 1030.0 1028.7 1026.1 1019.6 1020.9 1018.9 1027.0 1036.7 1041.9 1037.1 1041.9 DAY-HOUR 31-21 1- 0 22-18 30- 6 13- 6 6- 6 10- 9 8- 6 23- 6 26- 6 30- 6 1- 0 MIN. QFF PRESSURE IN HPA 1006.2 1003.5 999.3 997.9 1000.2 1003.1 1001.7 1002.5 1005.9 1012.7 1007.3 1002.8 997.9 DAY-HOUR 9-21 25-15 19-12 19-12 23- 0 2- 3 6-15 18- 0 5-15 2-12 21- 3 23-12 PRESSURE AT HOUR 0000 UTC. MEAN QFE PRESSURE IN HPA 1021.6 1024.3 1018.8 1020.0 1016.1 1013.3 1012.8 1012.9 1018.7 1027.6 1025.2 1022.1 1019.5 MAX. QFE PRESSURE IN HPA 1040.6 1040.6 1030.9 1029.9 1025.3 1020.0 1020.1 1020.7 1026.6 1037.0 1043.2 1039.4 1043.2 DAY 21 1 23 1 13 6 11 28 20 28 30 1 MIN. QFE PRESSURE IN HPA 1008.5 1012.2 1008.0 1009.0 1002.3 1006.7 1006.3 1004.6 1010.3 1015.2 1009.5 1008.8 1002.3 DAY 10 25 19 19 23 2 6 18 22 1 21 12 MEAN QNH PRESSURE IN HPA 1019.1 1021.8 1016.4 1017.5 1013.7 1010.9 1010.4 1010.4 1016.2 1025.2 1022.7 1019.6 1017.0 MAX. QNH PRESSURE IN HPA 1038.1 1038.1 1028.4 1027.4 1022.8 1017.5 1017.6 1018.2 1024.1 1034.5 1040.7 1036.9 1040.7 DAY 21 1 23 1 13 6 11 28 20 28 30 1 MIN. QNH PRESSURE IN HPA 1006.0 1009.7 1005.5 1006.5 999.9 1004.3 1003.9 1002.2 1007.8 1012.7 1007.0 1006.3 999.9 DAY 10 25 19 19 23 2 6 18 22 1 21 12 MEAN QFF PRESSURE IN HPA 1019.5 1022.1 1016.7 1017.4 1014.0 1011.2 1010.7 1010.8 1016.6 1025.4 1023.0 1019.8 1017.3 MAX. QFF PRESSURE IN HPA 1038.3 1038.3 1028.6 1025.5 1023.1 1017.9 1018.0 1018.6 1024.4 1034.7 1040.9 1037.1 1040.9 DAY 21 1 23 30 13 6 11 28 20 28 30 1 MIN. QFF PRESSURE IN HPA 1006.4 1010.0 1005.8 1006.8 1000.2 1004.6 1004.2 1002.5 1008.2 1013.1 1007.3 1006.6 1000.2 DAY 10 25 19 19 23 2 6 18 22 1 21 12 PRESSURE AT HOUR 0300 UTC. MEAN QFE PRESSURE IN HPA 1021.7 1024.7 1019.2 1020.8 1016.7 1013.9 1013.6 1013.6 1019.0 1028.1 1025.5 1022.0 1019.9 MAX. QFE PRESSURE IN HPA 1040.0 1039.3 1031.8 1030.0 1027.1 1020.6 1021.7 1021.0 1027.7 1037.3 1043.0 1039.3 1043.0 DAY 21 1 23 1 13 6 10 28 23 26 30 1 MIN. QFE PRESSURE IN HPA 1008.6 1011.4 1006.0 1007.7 1002.4 1005.2 1006.9 1006.0 1010.3 1017.7 1009.4 1008.8 1002.4 DAY 10 25 19 19 23 2 6 18 22 1 21 23 MEAN QNH PRESSURE IN HPA 1019.2 1022.3 1016.7 1018.4 1014.2 1011.5 1011.1 1011.1 1016.6 1025.6 1023.0 1019.5 1017.4 MAX. QNH PRESSURE IN HPA 1037.5 1036.8 1029.3 1027.5 1024.6 1018.1 1019.2 1018.5 1025.2 1034.8 1040.5 1036.8 1040.5 DAY 21 1 23 1 13 6 10 28 23 26 30 1 MIN. QNH PRESSURE IN HPA 1006.1 1008.9 1003.6 1005.2 1000.0 1002.8 1004.4 1003.6 1007.8 1015.2 1006.9 1006.3 1000.0 DAY 10 25 19 19 23 2 6 18 22 1 21 23 MEAN QFF PRESSURE IN HPA 1019.5 1022.5 1016.9 1018.6 1014.6 1011.8 1011.5 1011.5 1016.9 1025.9 1023.3 1019.8 1017.7 MAX. QFF PRESSURE IN HPA 1037.7 1037.0 1029.5 1027.7 1024.9 1018.5 1019.6 1018.9 1025.5 1035.0 1040.7 1037.0 1040.7 DAY 21 1 23 1 13 6 10 28 23 26 30 1 MIN. QFF PRESSURE IN HPA 1006.5 1009.2 1003.8 1005.5 1000.3 1003.1 1004.8 1003.9 1008.2 1015.6 1007.3 1006.6 1000.3 DAY 10 25 19 19 23 2 6 18 22 1 21 23 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ASTARA (40709) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 38 25 N LONGITUDE 48 52 E DATA PROCESSING CENTER ELEVATION -18.0 M MEANS AND EXTREMES FOR THE YEAR 1987 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 0600 UTC. MEAN QFE PRESSURE IN HPA 1023.1 1025.5 1020.0 1021.4 1017.4 1014.7 1014.3 1014.3 1020.0 1029.2 1026.5 1022.8 1020.8 MAX. QFE PRESSURE IN HPA 1040.5 1037.9 1032.0 1030.9 1028.3 1021.7 1022.6 1021.0 1029.2 1039.0 1044.2 1039.4 1044.2 DAY 20 1 23 1 13 6 10 8 23 26 30 1 MIN. QFE PRESSURE IN HPA 1009.9 1011.0 1005.0 1005.3 1003.3 1006.8 1007.2 1006.1 1012.1 1018.0 1010.1 1008.2 1003.3 DAY 10 25 19 19 23 2 6 18 22 2 3 23 MEAN QNH PRESSURE IN HPA 1020.6 1023.0 1017.5 1018.9 1014.9 1012.2 1011.8 1011.8 1017.6 1026.7 1024.0 1020.3 1018.3 MAX. QNH PRESSURE IN HPA 1038.0 1035.4 1029.5 1028.4 1025.8 1019.2 1020.1 1018.5 1026.7 1036.5 1041.7 1036.9 1041.7 DAY 20 1 23 1 13 6 10 8 23 26 30 1 MIN. QNH PRESSURE IN HPA 1007.4 1008.5 1002.6 1002.9 1000.9 1004.4 1004.7 1003.7 1009.6 1015.5 1007.6 1005.7 1000.9 DAY 10 25 19 19 23 2 6 18 22 2 3 23 MEAN QFF PRESSURE IN HPA 1020.8 1023.2 1017.8 1019.2 1015.3 1012.6 1012.3 1012.2 1017.7 1027.0 1024.3 1020.6 1018.6 MAX. QFF PRESSURE IN HPA 1038.2 1035.6 1029.7 1028.7 1026.1 1019.6 1020.5 1018.9 1027.0 1036.7 1041.9 1037.1 1041.9 DAY 20 1 23 30 13 6 10 8 23 26 30 1 MIN. QFF PRESSURE IN HPA 1007.8 1008.8 1002.8 1003.1 1001.2 1004.7 1005.1 1004.0 1010.0 1015.9 1007.9 1006.0 1001.2 DAY 10 25 19 19 23 2 6 18 22 2 3 23 PRESSURE AT HOUR 0900 UTC. MEAN QFE PRESSURE IN HPA 1022.6 1024.5 1019.6 1020.7 1016.9 1014.3 1013.7 1013.7 1019.2 1028.6 1025.5 1021.7 1020.1 MAX. QFE PRESSURE IN HPA 1040.0 1034.6 1031.0 1030.3 1027.9 1021.0 1023.0 1020.0 1028.4 1038.2 1043.0 1037.4 1043.0 DAY 20 1 22 1 13 6 10 28 23 26 29 1 MIN. QFE PRESSURE IN HPA 1008.6 1008.6 1003.0 1003.8 1004.5 1007.3 1005.8 1005.7 1010.0 1016.2 1009.8 1006.8 1003.0 DAY 10 25 19 19 23 18 6 18 5 2 3 23 MEAN QNH PRESSURE IN HPA 1020.1 1022.1 1017.1 1018.2 1014.4 1011.9 1011.2 1011.2 1016.8 1026.1 1023.0 1019.2 1017.6 MAX. QNH PRESSURE IN HPA 1037.5 1032.1 1028.5 1027.8 1025.4 1018.5 1020.5 1017.5 1025.9 1035.7 1040.5 1034.9 1040.5 DAY 20 1 22 1 13 6 10 28 23 26 29 1 MIN. QNH PRESSURE IN HPA 1006.1 1006.1 1000.6 1001.4 1002.1 1004.8 1003.4 1003.3 1007.5 1013.7 1007.3 1004.4 1000.6 DAY 10 25 19 19 23 18 6 18 5 2 3 23 MEAN QFF PRESSURE IN HPA 1020.0 1022.2 1017.4 1018.4 1014.7 1012.2 1011.6 1011.6 1017.1 1026.4 1023.3 1019.5 1017.9 MAX. QFF PRESSURE IN HPA 1037.7 1032.3 1028.8 1028.0 1025.7 1018.9 1020.9 1017.9 1026.2 1035.9 1040.7 1035.1 1040.7 DAY 20 1 23 1 13 6 10 28 23 26 29 1 MIN. QFF PRESSURE IN HPA 1006.5 1006.4 1000.8 1001.6 1002.4 1005.2 1003.7 1003.6 1007.9 1014.1 1007.6 1004.6 1000.8 DAY 10 25 19 19 23 18 6 18 5 2 3 23 PRESSURE AT HOUR 1200 UTC. MEAN QFE PRESSURE IN HPA 1021.8 1023.2 1018.6 1019.7 1015.9 1013.6 1012.7 1012.5 1018.2 1027.9 1024.8 1021.1 1019.2 MAX. QFE PRESSURE IN HPA 1039.9 1033.5 1031.0 1028.1 1025.9 1019.9 1022.2 1019.0 1027.4 1037.7 1042.3 1036.2 1042.3 DAY 20 6 22 1 13 6 10 27 23 26 29 27 MIN. QFE PRESSURE IN HPA 1008.9 1005.6 1001.5 1000.0 1004.1 1007.1 1004.3 1004.7 1008.0 1014.8 1010.2 1005.0 1000.0 DAY 2 25 19 19 24 18 6 18 5 2 3 23 MEAN QNH PRESSURE IN HPA 1019.3 1020.8 1016.2 1017.3 1013.4 1011.2 1010.2 1010.1 1015.7 1025.4 1022.3 1018.6 1016.7 MAX. QNH PRESSURE IN HPA 1037.4 1031.0 1028.5 1025.6 1023.4 1017.4 1019.7 1016.5 1024.9 1035.2 1039.8 1033.7 1039.8 DAY 20 6 22 1 13 6 10 27 23 26 29 27 MIN. QNH PRESSURE IN HPA 1006.4 1003.2 999.1 997.6 1001.7 1004.6 1001.9 1002.3 1005.5 1012.3 1007.7 1002.6 997.6 DAY 2 25 19 19 24 18 6 18 5 2 3 23 MEAN QFF PRESSURE IN HPA 1019.4 1021.0 1016.1 1017.5 1013.7 1011.6 1010.6 1010.4 1016.1 1025.7 1022.6 1018.8 1017.0 MAX. QFF PRESSURE IN HPA 1037.6 1031.2 1028.7 1025.9 1023.7 1017.8 1020.1 1016.9 1025.2 1035.4 1040.0 1033.9 1040.0 DAY 20 6 22 30 13 6 10 27 23 26 29 27 MIN. QFF PRESSURE IN HPA 1006.7 1003.5 999.3 997.9 1002.0 1005.0 1002.2 1002.6 1005.9 1012.7 1008.0 1002.8 997.9 DAY 2 25 19 19 24 18 6 18 5 2 3 23 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ASTARA (40709) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 38 25 N LONGITUDE 48 52 E DATA PROCESSING CENTER ELEVATION -18.0 M MEANS AND EXTREMES FOR THE YEAR 1987 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 1500 UTC. MEAN QFE PRESSURE IN HPA 1022.2 1023.5 1019.0 1019.8 1015.6 1013.2 1012.2 1012.3 1018.2 1028.2 1025.6 1021.7 1019.3 MAX. QFE PRESSURE IN HPA 1041.0 1034.0 1031.4 1028.8 1024.9 1019.8 1021.7 1019.6 1027.8 1037.3 1042.8 1036.0 1042.8 DAY 20 6 22 5 13 5 10 27 19 26 29 27 MIN. QFE PRESSURE IN HPA 1009.2 1005.6 1004.6 1002.7 1004.4 1007.1 1003.8 1005.1 1008.0 1015.9 1012.4 1005.8 1002.7 DAY 2 25 19 19 23 18 6 18 5 2 3 23 MEAN QNH PRESSURE IN HPA 1019.7 1021.0 1016.6 1017.3 1013.1 1010.8 1009.8 1009.8 1015.7 1025.8 1023.1 1019.2 1016.8 MAX. QNH PRESSURE IN HPA 1038.5 1031.5 1028.9 1026.3 1022.4 1017.3 1019.2 1017.1 1025.3 1034.8 1040.3 1033.5 1040.3 DAY 20 6 22 5 13 5 10 27 19 26 29 27 MIN. QNH PRESSURE IN HPA 1006.7 1003.2 1002.2 1000.3 1002.0 1004.6 1001.4 1002.7 1005.5 1013.4 1009.9 1003.4 1000.3 DAY 2 25 19 19 23 18 6 18 5 2 3 23 MEAN QFF PRESSURE IN HPA 1019.9 1021.2 1016.8 1017.6 1013.5 1011.2 1010.1 1010.2 1016.1 1026.0 1023.4 1019.4 1017.1 MAX. QFF PRESSURE IN HPA 1038.7 1031.7 1029.1 1026.5 1022.7 1017.7 1019.6 1017.5 1025.6 1035.0 1040.5 1033.7 1040.5 DAY 20 6 22 5 13 5 10 27 19 26 29 27 MIN. QFF PRESSURE IN HPA 1007.0 1003.5 1002.4 1000.5 1002.3 1005.0 1001.7 1003.0 1005.9 1013.8 1010.2 1003.6 1000.5 DAY 2 25 19 19 23 18 6 18 5 2 3 23 PRESSURE AT HOUR 1800 UTC. MEAN QFE PRESSURE IN HPA 1022.5 1024.0 1020.0 1020.6 1016.8 1013.8 1013.1 1013.2 1019.2 1029.1 1026.1 1021.7 1020.0 MAX. QFE PRESSURE IN HPA 1041.8 1033.6 1032.3 1029.8 1024.9 1021.4 1021.9 1020.3 1028.7 1038.3 1043.4 1035.9 1043.4 DAY 31 6 22 5 13 5 10 27 19 26 29 26 MIN. QFE PRESSURE IN HPA 1008.5 1007.6 1009.9 1004.1 1005.0 1006.4 1004.9 1006.0 1012.0 1018.9 1011.8 1005.6 1004.1 DAY 9 25 19 19 24 18 6 17 5 2 20 23 MEAN QNH PRESSURE IN HPA 1020.1 1021.5 1017.5 1018.1 1014.4 1011.4 1010.6 1010.7 1016.7 1026.6 1023.6 1019.3 1017.5 MAX. QNH PRESSURE IN HPA 1039.3 1031.1 1029.8 1027.3 1022.4 1018.9 1019.4 1017.8 1026.2 1035.8 1040.9 1033.4 1040.9 DAY 31 6 22 5 13 5 10 27 19 26 29 26 MIN. QNH PRESSURE IN HPA 1006.0 1005.1 1007.4 1001.7 1002.6 1004.0 1002.5 1003.6 1009.5 1016.4 1009.3 1003.2 1001.7 DAY 9 25 19 19 24 18 6 17 5 2 20 23 MEAN QFF PRESSURE IN HPA 1020.3 1021.7 1017.8 1018.4 1014.7 1011.7 1011.0 1011.1 1016.7 1026.9 1023.9 1019.5 1017.8 MAX. QFF PRESSURE IN HPA 1039.5 1031.3 1030.0 1027.5 1022.7 1019.3 1019.8 1018.2 1026.2 1036.0 1041.1 1033.6 1041.1 DAY 31 6 22 5 13 5 10 27 23 26 29 26 MIN. QFF PRESSURE IN HPA 1006.4 1005.5 1007.7 1001.9 1002.9 1004.3 1002.8 1003.9 1009.9 1016.8 1009.6 1003.4 1001.9 DAY 9 25 19 19 24 18 6 17 5 2 20 23 PRESSURE AT HOUR 2100 UTC. MEAN QFE PRESSURE IN HPA 1022.2 1023.8 1019.6 1020.1 1016.3 1013.4 1012.9 1013.0 1018.9 1028.4 1026.0 1021.4 1019.7 MAX. QFE PRESSURE IN HPA 1042.1 1032.7 1031.7 1028.9 1025.3 1021.0 1021.0 1021.0 1027.6 1037.2 1043.6 1036.1 1043.6 DAY 31 13 23 24 12 5 10 27 19 27 29 26 MIN. QFE PRESSURE IN HPA 1008.3 1012.4 1009.2 1007.1 1003.8 1006.1 1006.0 1005.1 1011.0 1018.2 1010.7 1009.3 1003.8 DAY 9 25 13 19 22 18 6 17 21 1 20 11 MEAN QNH PRESSURE IN HPA 1019.7 1021.3 1017.1 1017.7 1013.8 1010.9 1010.5 1010.5 1016.4 1025.9 1023.5 1018.9 1017.2 MAX. QNH PRESSURE IN HPA 1039.6 1030.2 1029.2 1026.4 1022.8 1018.5 1018.5 1018.5 1025.1 1034.7 1041.1 1033.6 1041.1 DAY 31 13 23 24 12 5 10 27 19 27 29 26 MIN. QNH PRESSURE IN HPA 1005.8 1009.9 1006.7 1004.6 1001.4 1003.7 1003.6 1002.7 1008.5 1015.7 1008.2 1006.8 1001.4 DAY 9 25 13 19 22 18 6 17 21 1 20 11 MEAN QFF PRESSURE IN HPA 1019.8 1021.6 1017.4 1018.2 1014.1 1011.3 1010.8 1010.9 1016.7 1026.2 1023.8 1019.1 1017.5 MAX. QFF PRESSURE IN HPA 1039.8 1030.4 1029.4 1026.7 1023.2 1018.9 1018.9 1018.9 1025.4 1034.9 1041.3 1033.8 1041.3 DAY 31 13 23 24 12 5 10 27 19 27 29 26 MIN. QFF PRESSURE IN HPA 1006.2 1010.3 1007.0 1004.9 1001.7 1004.1 1003.9 1003.0 1008.9 1016.1 1008.5 1007.1 1001.7 DAY 9 25 13 19 22 18 6 17 21 1 20 11 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ASTARA (40709) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 38 25 N LONGITUDE 48 52 E DATA PROCESSING CENTER ELEVATION -18.0 M MEANS AND EXTREMES FOR THE YEAR 1988 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AIR TEMPERATURE (C) 4.9 4.4 8.1 13.4 17.0 24.6 25.8 23.8 20.6 16.9 10.7 8.0 14.9 MINIMUN AIR TEMPERATURE (C) 2.6 2.1 5.7 10.0 13.8 19.5 21.4 20.6 17.7 14.5 8.0 5.4 11.8 DAYS WITH MINIMUM TEMP. >=21 0 0 0 0 0 8 19 13 2 0 0 0 42 DAYS WITH MINIMUM TEMP. <=-4 0 0 0 0 0 0 0 0 0 0 0 0 0 DAYS WITH FREEZING MIN.<= 0 2 7 0 0 0 0 0 0 0 0 0 1 10 TEMPERATURE RECORDS LOWEST(C) -1.2 -0.8 1.6 4.0 7.4 15.2 17.0 17.4 14.5 9.8 2.0 -1.0 -1.2 DAY 3 3 7 6 2 1 28 26 14 23 15 29 MAXIMUM AIR TEMPERATURE (C) 7.8 7.6 11.2 17.3 20.7 27.7 30.2 27.9 24.1 20.5 14.7 11.6 18.4 DAYS WITH MAXIMUM TEMP. >=30 0 0 0 0 0 2 17 6 0 0 0 0 25 DAYS WITH MAXIMUM TEMP. <= 0 0 0 0 0 0 0 0 0 0 0 0 0 0 TEMPERATURE RECORDS HIGHEST(C) 13.0 18.4 17.4 26.2 27.2 32.2 34.2 31.5 29.0 24.8 28.8 18.6 34.2 DAY 7 22 16 15 28 13 6 12 10 30 8 11 DIF. BETWEEN (MAX.-MIN.) (C) 5.2 5.5 5.5 7.3 6.9 8.2 8.8 7.3 6.4 6.0 6.7 6.2 6.6 MEAN DAILY TEMP. (MDT) (C) 5.2 4.8 8.5 13.7 17.3 23.6 25.8 24.3 20.9 17.5 11.3 8.5 15.1 COOLING DEG. DAYS(BASE 21 0C) 0.0 0.0 0.0 0.0 5.2 80.6 149.0 102.3 27.5 0.0 0.0 0.0 364.8 HEATING DEG. DAYS(BASE 18 0C) 396.2 381.7 295.6 132.1 54.8 0.0 0.0 0.0 2.4 39.2 203.1 294.8 1799.8 DEWPOINT (MEAN C) 2.7 2.4 5.7 9.4 13.3 18.9 19.6 19.4 17.8 14.5 8.3 5.6 11.5 MIXING RATIO (G/KG) 4.58 4.50 5.72 7.50 9.68 13.82 14.62 14.22 12.84 10.33 6.88 5.73 9.20 VAPOUR PRESSURE (HPA) 7.49 7.35 9.26 12.12 15.58 21.94 23.20 22.63 20.57 16.69 11.18 9.30 14.78 SATURATION DEF. (HPA) 1.26 1.21 1.62 3.64 4.38 9.45 10.61 7.32 4.15 2.89 1.96 1.63 4.18 RELATIVE HUMIDITY (MEAN %) 86 87 86 79 80 72 71 78 85 86 86 86 82 RELATIVE HUMIDITY (MAX. %) 95 96 95 94 94 88 89 93 96 96 97 95 94 RELATIVE HUMIDITY (MIN. %) 74 73 73 61 65 59 53 61 69 73 72 71 67 RELATIVE HUMIDITY (MEAN% 03UTC) 89 92 92 87 92 86 81 86 92 93 92 92 90 RELATIVE HUMIDITY (MEAN% 09UTC) 77 79 76 66 68 64 56 63 74 77 75 72 71 RELATIVE HUMIDITY (MEAN% 15UTC) 87 88 85 76 77 71 62 74 85 87 89 89 81 RH=0 => RELATIVE HUMIDITY < 0.5% AMOUNT OF PRECIPITATION MM. 94.8 61.2 75.7 86.4 99.0 61.8 23.4 145.2 238.4 125.4 127.5 76.3 1215.1 DAYS WITH PRECIPITATION >=10 4 3 3 3 2 1 0 6 7 4 5 2 40 DAYS WITH PRECIPITATION >= 5 6 5 7 5 2 2 2 7 10 7 8 3 64 DAYS WITH PRECIPITATION >= 1 11 9 13 12 7 6 5 9 11 12 11 6 112 DAYS WITH PRECIPITATION 18 13 19 18 13 9 8 14 14 19 18 10 173 GREATEST DAILY PRECIPITATION 21.0 14.2 12.0 22.7 51.1 44.0 9.0 39.0 90.1 36.5 28.8 37.0 90.1 DAY 16 17 31 30 30 19 15 29 12 27 29 27 DAY WITH THUNDER STORM 0 0 4 2 10 8 4 6 3 2 1 0 40 DAYS WITH SNOW OR SLEET 1 5 0 0 0 0 0 0 0 0 0 0 6 DAYS WITH DUST 0 0 0 0 0 0 1 0 0 0 0 0 1 WIND DIRECTION (PREVAILING) 360 360 180 135 135 135 135 45 135 360 360 360 135 PREVAILING WIND SPEED(KNOTS) 4.6 5.7 6.6 6.6 6.2 6.1 5.9 5.6 4.3 4.6 4.2 4.8 6.2 PREVAILING WIND PERCENT 19.0 22.0 16.9 15.8 18.9 28.2 16.1 8.1 6.3 10.1 17.5 8.1 9.8 CALMS PERCENT OF WIND 58.5 55.6 46.8 48.8 47.5 39.4 57.7 61.9 64.2 68.5 63.3 67.6 57.2 NO. OF WIND OBSERVATION 248 232 248 240 217 170 248 247 240 248 240 247 2825 VECTOR WIND DIRECTION (MEAN) 345 12 142 120 132 130 130 61 119 333 353 353 93 VECTOR WIND MAGNITUDE(KNOTS) 1.3 1.0 1.3 1.1 1.7 2.3 0.8 0.6 0.2 0.7 1.0 0.2 0.5 WIND STEADINESES (MEAN %) 61.9 40.0 38.2 35.5 54.8 67.6 34.8 25.0 12.5 50.0 52.6 11.8 20.8 WIND SPEED (MEAN KNOTS) 2.1 2.5 3.4 3.1 3.1 3.4 2.3 2.4 1.6 1.4 1.9 1.7 2.4 FASTEST WIND DIRECTION 330 150 180 240 150 20 30 310 320 340 30 330 240 FASTEST WIND SPEED (KNOTS) 14 16 16 27 16 19 16 19 16 16 23 17 27 DAY 16 19 4 15 13 30 23 4 12 21 8 23 DAYS WITH SKY CLEAR (0-2)/8 3 4 2 5 5 15 12 6 8 3 7 7 77 DAYS WITH P.CLOUDY (3-6)/8 8 9 11 11 17 14 15 14 9 13 6 11 138 DAYS WITH CLOUDY (7-8)/8 20 16 18 14 9 1 4 11 13 15 17 13 151 DAYS WITH VISIBILITY =< 2 KM 8 14 7 3 1 0 2 5 8 3 10 7 68 DURATION OF SUNSHINE HOURS 64.5 98.6 103.0 169.0 189.1 264.9 254.8 159.0 123.0 94.4 90.8 96.6 1707.7 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ASTARA (40709) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 38 25 N LONGITUDE 48 52 E DATA PROCESSING CENTER ELEVATION -18.0 M MEANS AND EXTREMES FOR THE YEAR 1988 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL MEAN QFE PRESSURE IN HPA 1024.0 1023.3 1017.2 1019.1 1018.2 1010.4 1010.8 1013.2 1018.0 1022.3 1021.6 1019.6 1018.1 MAX. QFE PRESSURE IN HPA 1034.7 1039.2 1032.7 1034.6 1031.0 1016.4 1017.8 1023.6 1029.8 1035.0 1037.0 1030.6 1039.2 DAY-HOUR 2- 6 6- 6 16-18 8- 6 5- 6 27- 6 26-18 21- 6 21- 6 16- 6 5-15 5- 6 MIN. QFE PRESSURE IN HPA 1011.3 1000.0 997.6 1004.1 1006.0 999.6 1005.6 1003.2 1004.0 1006.0 1007.9 998.2 997.6 DAY-HOUR 28-12 29-18 3- 3 23- 0 28-12 14-15 8-15 28-15 9- 0 30-15 8-12 26- 0 MEAN QNH PRESSURE IN HPA 1021.6 1020.9 1014.7 1016.6 1015.7 1007.9 1008.3 1010.8 1015.5 1019.9 1019.1 1017.1 1015.7 MAX. QNH PRESSURE IN HPA 1032.2 1036.7 1030.2 1032.1 1028.5 1013.9 1015.3 1021.1 1027.3 1032.5 1034.5 1028.1 1036.7 DAY-HOUR 2- 6 6- 6 16-18 8- 6 5- 6 27- 6 26-18 21- 6 21- 6 16- 6 5-15 5- 6 MIN. QNH PRESSURE IN HPA 1008.8 997.6 995.2 1001.7 1003.6 997.2 1003.2 1000.8 1001.6 1003.6 1005.4 995.8 995.2 DAY-HOUR 28-12 29-18 3- 3 23- 0 28-12 14-15 8-15 28-15 9- 0 30-15 8-12 26- 0 MEAN QFF PRESSURE IN HPA 1021.8 1021.1 1015.0 1016.9 1016.6 ****** 1008.7 1011.2 1015.9 1020.2 1019.3 1017.3 ****** MAX. QFF PRESSURE IN HPA 1032.4 1036.9 1030.5 1032.4 1028.8 ****** 1015.7 1021.5 1027.7 1032.8 1034.8 1028.4 ****** DAY-HOUR 2- 6 6- 6 16-18 8- 6 5- 6 **-** 26-18 21- 6 21- 6 16- 6 5-15 5- 6 MIN. QFF PRESSURE IN HPA 1009.1 997.8 995.4 1002.0 1004.1 ****** 1003.5 1001.1 1001.9 1003.9 1005.8 996.0 ****** DAY-HOUR 28-12 29-18 3- 3 23- 0 28-15 **-** 8-15 28-15 9- 0 30-15 8-12 26- 0 PRESSURE AT HOUR 0000 UTC. MEAN QFE PRESSURE IN HPA 1023.8 1023.1 1016.4 1018.4 1018.8 ****** 1010.4 1012.9 1017.5 1022.0 1021.3 1019.3 ****** MAX. QFE PRESSURE IN HPA 1033.1 1036.3 1031.0 1031.0 1029.0 ****** 1016.0 1022.5 1027.3 1033.0 1033.7 1029.8 ****** DAY 17 6 17 8 5 ** 27 21 24 16 6 5 MIN. QFE PRESSURE IN HPA 1012.2 1008.0 999.5 1004.1 1008.4 ****** 1007.0 1005.0 1004.0 1012.2 1010.3 998.2 ****** DAY 1 29 3 23 1 ** 1 29 9 20 28 26 MEAN QNH PRESSURE IN HPA 1021.3 1020.6 1013.9 1016.0 1016.3 ****** 1008.0 1010.4 1015.1 1019.5 1018.8 1016.8 ****** MAX. QNH PRESSURE IN HPA 1030.6 1033.8 1028.5 1028.5 1026.5 ****** 1013.5 1020.0 1024.8 1030.5 1031.2 1027.3 ****** DAY 17 6 17 8 5 ** 27 21 24 16 6 5 MIN. QNH PRESSURE IN HPA 1009.7 1005.5 997.1 1001.7 1005.9 ****** 1004.5 1002.6 1001.6 1009.7 1007.8 995.8 ****** DAY 1 29 3 23 1 ** 1 29 9 20 28 26 MEAN QFF PRESSURE IN HPA 1021.5 1020.8 1014.2 1016.3 1016.6 ****** 1008.4 1010.8 1015.4 1019.8 1019.1 1017.1 ****** MAX. QFF PRESSURE IN HPA 1030.8 1034.0 1028.7 1028.8 1026.8 ****** 1013.9 1020.4 1025.1 1030.8 1031.5 1027.6 ****** DAY 17 6 17 8 5 ** 27 21 24 16 6 5 MIN. QFF PRESSURE IN HPA 1010.0 1005.8 997.3 1002.0 1006.3 ****** 1004.9 1002.9 1001.9 1010.1 1008.1 996.0 ****** DAY 1 29 3 23 1 ** 1 29 9 20 28 26 PRESSURE AT HOUR 0300 UTC. MEAN QFE PRESSURE IN HPA 1024.0 1023.4 1016.9 1019.2 1017.5 1010.8 1011.1 1013.5 1018.3 1022.3 1021.6 1019.5 1018.2 MAX. QFE PRESSURE IN HPA 1033.6 1036.9 1031.3 1032.6 1029.7 1015.8 1016.6 1022.9 1027.6 1034.0 1033.7 1029.8 1036.9 DAY 17 6 17 8 5 8 27 21 21 16 6 5 MIN. QFE PRESSURE IN HPA 1012.4 1008.0 997.6 1005.4 1006.7 1003.8 1007.2 1005.8 1005.9 1010.8 1010.1 999.3 997.6 DAY 28 29 3 23 28 15 15 29 9 20 28 26 MEAN QNH PRESSURE IN HPA 1021.5 1020.9 1014.4 1016.7 1015.1 1008.4 1008.7 1011.1 1015.8 1019.9 1019.1 1017.1 1015.7 MAX. QNH PRESSURE IN HPA 1031.1 1034.4 1028.8 1030.1 1027.2 1013.3 1014.1 1020.4 1025.1 1031.5 1031.2 1027.3 1034.4 DAY 17 6 17 8 5 8 27 21 21 16 6 5 MIN. QNH PRESSURE IN HPA 1009.9 1005.5 995.2 1003.0 1004.3 1001.4 1004.7 1003.4 1003.5 1008.3 1007.6 996.9 995.2 DAY 28 29 3 23 28 15 15 29 9 20 28 26 MEAN QFF PRESSURE IN HPA 1021.7 1021.1 1014.7 1017.0 1015.4 1008.7 1009.0 1011.5 1016.2 1020.2 1019.4 1017.3 1016.0 MAX. QFF PRESSURE IN HPA 1031.3 1034.6 1029.0 1030.4 1027.5 1013.7 1014.5 1020.8 1025.5 1031.8 1031.5 1027.6 1034.6 DAY 17 6 17 8 5 8 27 21 21 16 6 5 MIN. QFF PRESSURE IN HPA 1010.2 1005.8 995.4 1003.3 1004.6 1001.8 1005.2 1003.7 1003.8 1008.7 1007.9 997.1 995.4 DAY 28 29 3 23 28 15 15 29 9 20 28 26 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ASTARA (40709) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 38 25 N LONGITUDE 48 52 E DATA PROCESSING CENTER ELEVATION -18.0 M MEANS AND EXTREMES FOR THE YEAR 1988 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 0600 UTC. MEAN QFE PRESSURE IN HPA 1025.2 1024.6 1018.0 1020.2 1018.1 1011.2 1011.7 1014.2 1019.3 1023.6 1022.8 1020.6 1019.1 MAX. QFE PRESSURE IN HPA 1034.7 1039.2 1030.8 1034.6 1031.0 1016.4 1017.2 1023.6 1029.8 1035.0 1034.1 1030.6 1039.2 DAY 2 6 17 8 5 27 27 21 21 16 6 5 MIN. QFE PRESSURE IN HPA 1013.4 1007.0 997.6 1008.0 1007.0 1003.2 1007.8 1006.1 1007.8 1010.9 1009.8 1002.0 997.6 DAY 28 29 3 15 28 15 1 29 9 30 8 26 MEAN QNH PRESSURE IN HPA 1022.7 1022.1 1015.6 1017.8 1015.6 1008.7 1009.2 1011.7 1016.8 1021.1 1020.3 1018.2 1016.6 MAX. QNH PRESSURE IN HPA 1032.2 1036.7 1028.3 1032.1 1028.5 1013.9 1014.7 1021.1 1027.3 1032.5 1031.6 1028.1 1036.7 DAY 2 6 17 8 5 27 27 21 21 16 6 5 MIN. QNH PRESSURE IN HPA 1010.9 1004.5 995.2 1005.5 1004.5 1000.8 1005.3 1003.7 1005.3 1008.4 1007.3 999.6 995.2 DAY 28 29 3 15 28 15 1 29 9 30 8 26 MEAN QFF PRESSURE IN HPA 1022.9 1022.3 1015.8 1018.0 1017.5 ****** 1009.6 1012.1 1017.2 1021.4 1020.6 1018.4 ****** MAX. QFF PRESSURE IN HPA 1032.4 1036.9 1028.6 1032.4 1028.8 ****** 1015.1 1021.5 1027.7 1032.8 1031.9 1028.4 ****** DAY 2 6 17 8 5 ** 27 21 21 16 6 5 MIN. QFF PRESSURE IN HPA 1011.2 1004.8 995.4 1005.9 1010.0 ****** 1005.7 1004.0 1005.7 1008.7 1007.7 999.8 ****** DAY 28 29 3 23 19 ** 1 29 9 30 8 26 PRESSURE AT HOUR 0900 UTC. MEAN QFE PRESSURE IN HPA 1024.3 1023.7 1017.4 1019.8 1017.8 1010.6 1011.4 1013.5 1018.3 1022.4 1021.4 1019.4 1018.3 MAX. QFE PRESSURE IN HPA 1034.0 1037.8 1029.0 1034.2 1030.3 1016.4 1016.4 1022.5 1028.0 1034.7 1036.0 1029.0 1037.8 DAY 2 6 17 8 5 27 27 21 21 16 5 5 MIN. QFE PRESSURE IN HPA 1011.8 1004.1 998.8 1008.6 1007.0 1002.2 1007.9 1005.5 1008.2 1007.7 1008.2 1002.8 998.8 DAY 28 29 3 23 28 15 8 28 9 30 8 26 MEAN QNH PRESSURE IN HPA 1021.8 1021.3 1014.9 1017.4 1015.4 1008.2 1008.9 1011.0 1015.9 1019.9 1018.9 1016.9 1015.9 MAX. QNH PRESSURE IN HPA 1031.5 1035.3 1026.5 1031.7 1027.8 1013.9 1013.9 1020.0 1025.5 1032.2 1033.5 1026.5 1035.3 DAY 2 6 17 8 5 27 27 21 21 16 5 5 MIN. QNH PRESSURE IN HPA 1009.3 1001.7 996.4 1006.1 1004.5 999.8 1005.4 1003.1 1005.7 1005.2 1005.7 1000.4 996.4 DAY 28 29 3 23 28 15 8 28 9 30 8 26 MEAN QFF PRESSURE IN HPA 1022.0 1021.5 1015.2 1017.7 1017.2 ****** 1009.3 1011.4 1016.2 1020.2 1019.2 1017.2 ****** MAX. QFF PRESSURE IN HPA 1031.7 1035.5 1026.8 1032.0 1028.1 ****** 1014.3 1020.4 1025.8 1032.5 1033.8 1026.8 ****** DAY 17 6 17 8 5 ** 27 21 21 16 5 5 MIN. QFF PRESSURE IN HPA 1009.6 1001.9 996.6 1006.5 1007.2 ****** 1005.8 1003.4 1006.1 1005.6 1006.1 1000.6 ****** DAY 28 29 3 23 9 ** 8 28 9 30 8 26 PRESSURE AT HOUR 1200 UTC. MEAN QFE PRESSURE IN HPA 1023.5 1022.6 1016.7 1018.8 1017.3 1009.8 1010.5 1012.7 1017.3 1021.6 1020.9 1019.0 1017.6 MAX. QFE PRESSURE IN HPA 1033.4 1035.8 1027.6 1033.5 1029.4 1015.6 1016.0 1021.2 1027.0 1034.0 1036.8 1028.7 1036.8 DAY 2 6 24 8 4 27 26 21 30 16 5 23 MIN. QFE PRESSURE IN HPA 1011.3 1002.2 1000.0 1008.9 1006.0 1000.9 1006.8 1004.2 1007.4 1006.8 1007.9 1005.1 1000.0 DAY 28 29 3 22 28 15 8 28 4 30 8 26 MEAN QNH PRESSURE IN HPA 1021.0 1020.2 1014.2 1016.3 1014.8 1007.3 1008.0 1010.3 1014.9 1019.2 1018.4 1016.5 1015.1 MAX. QNH PRESSURE IN HPA 1030.9 1033.3 1025.1 1031.0 1026.9 1013.1 1013.5 1018.7 1024.5 1031.5 1034.3 1026.2 1034.3 DAY 2 6 24 8 4 27 26 21 30 16 5 23 MIN. QNH PRESSURE IN HPA 1008.8 999.8 997.6 1006.4 1003.6 998.5 1004.4 1001.8 1004.9 1004.4 1005.4 1002.7 997.6 DAY 28 29 3 22 28 15 8 28 4 30 8 26 MEAN QFF PRESSURE IN HPA 1021.2 1020.4 1014.4 1016.6 1016.7 ****** 1008.4 1010.7 1015.2 1019.5 1018.7 1016.8 ****** MAX. QFF PRESSURE IN HPA 1031.1 1033.5 1025.4 1031.3 1027.2 ****** 1013.9 1019.1 1024.8 1031.8 1034.6 1026.5 ****** DAY 2 6 24 8 5 ** 26 21 30 16 5 23 MIN. QFF PRESSURE IN HPA 1009.1 1000.0 997.8 1006.8 1007.9 ****** 1004.7 1002.1 1005.3 1004.7 1005.8 1002.9 ****** DAY 28 29 3 22 11 ** 8 28 4 30 8 26 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ASTARA (40709) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 38 25 N LONGITUDE 48 52 E DATA PROCESSING CENTER ELEVATION -18.0 M MEANS AND EXTREMES FOR THE YEAR 1988 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 1500 UTC. MEAN QFE PRESSURE IN HPA 1023.8 1023.1 1017.2 1018.6 1017.2 1009.2 1010.1 1012.6 1017.3 1022.0 1021.5 1019.6 1017.7 MAX. QFE PRESSURE IN HPA 1033.8 1035.8 1030.4 1032.9 1029.4 1015.0 1016.7 1021.0 1027.6 1033.6 1037.0 1029.0 1037.0 DAY 2 6 16 8 4 27 26 20 30 16 5 23 MIN. QFE PRESSURE IN HPA 1012.3 1001.0 1003.0 1008.0 1006.2 999.6 1005.6 1003.2 1006.2 1006.0 1011.8 1005.0 999.6 DAY 30 29 4 22 28 14 8 28 8 30 19 25 MEAN QNH PRESSURE IN HPA 1021.4 1020.6 1014.7 1016.2 1014.7 1006.8 1007.6 1010.1 1014.9 1019.5 1019.1 1017.1 1015.2 MAX. QNH PRESSURE IN HPA 1031.3 1033.3 1027.9 1030.4 1026.9 1012.5 1014.2 1018.5 1025.1 1031.1 1034.5 1026.5 1034.5 DAY 2 6 16 8 4 27 26 20 30 16 5 23 MIN. QNH PRESSURE IN HPA 1009.8 998.6 1000.6 1005.5 1003.8 997.2 1003.2 1000.8 1003.8 1003.6 1009.3 1002.6 997.2 DAY 30 29 4 22 28 14 8 28 8 30 19 25 MEAN QFF PRESSURE IN HPA 1021.6 1020.8 1015.0 1016.5 1015.1 1007.1 1008.0 1010.5 1015.2 1019.8 1019.3 1017.4 1015.5 MAX. QFF PRESSURE IN HPA 1031.5 1033.5 1028.1 1030.7 1027.2 1012.9 1014.6 1018.9 1025.4 1031.4 1034.8 1026.7 1034.8 DAY 2 6 16 8 4 27 26 20 30 16 5 23 MIN. QFF PRESSURE IN HPA 1010.1 998.8 1000.8 1005.9 1004.1 997.6 1003.5 1001.1 1004.1 1003.9 1009.6 1002.8 997.6 DAY 30 29 4 22 28 14 8 28 8 30 19 25 PRESSURE AT HOUR 1800 UTC. MEAN QFE PRESSURE IN HPA 1024.1 1023.3 1017.8 1019.4 1020.1 ****** 1010.7 1013.5 1018.2 1022.7 1021.7 1019.8 ****** MAX. QFE PRESSURE IN HPA 1033.8 1036.3 1032.7 1032.9 1029.6 ****** 1017.8 1023.0 1028.4 1033.4 1035.4 1030.0 ****** DAY 2 5 16 8 4 ** 26 20 30 15 5 4 MIN. QFE PRESSURE IN HPA 1011.8 1000.0 1003.4 1008.0 1010.7 ****** 1007.0 1003.9 1005.3 1010.1 1012.0 1001.2 ****** DAY 30 29 4 22 11 ** 8 28 8 30 19 25 MEAN QNH PRESSURE IN HPA 1021.6 1020.8 1015.4 1017.0 1017.6 ****** 1008.3 1011.0 1015.7 1020.2 1019.3 1017.3 ****** MAX. QNH PRESSURE IN HPA 1031.3 1033.8 1030.2 1030.4 1027.1 ****** 1015.3 1020.5 1025.9 1030.9 1032.9 1027.5 ****** DAY 2 5 16 8 4 ** 26 20 30 15 5 4 MIN. QNH PRESSURE IN HPA 1009.3 997.6 1001.0 1005.5 1008.2 ****** 1004.5 1001.5 1002.9 1007.6 1009.5 998.8 ****** DAY 30 29 4 22 11 ** 8 28 8 30 19 25 MEAN QFF PRESSURE IN HPA 1021.9 1021.0 1015.6 1017.3 1017.9 ****** 1008.7 1011.4 1016.0 1020.5 1019.5 1017.6 ****** MAX. QFF PRESSURE IN HPA 1031.5 1034.0 1030.5 1030.7 1027.4 ****** 1015.7 1020.9 1026.2 1031.2 1033.2 1027.8 ****** DAY 17 5 16 8 4 ** 26 20 30 15 5 4 MIN. QFF PRESSURE IN HPA 1009.6 997.8 1001.2 1005.9 1008.6 ****** 1005.0 1001.8 1003.2 1008.0 1009.8 999.0 ****** DAY 30 29 4 22 11 ** 8 28 8 30 19 25 PRESSURE AT HOUR 2100 UTC. MEAN QFE PRESSURE IN HPA 1023.8 1023.1 1017.4 1018.6 1020.0 ****** 1010.6 1013.3 1018.0 1022.3 1021.4 1019.4 ****** MAX. QFE PRESSURE IN HPA 1032.9 1036.3 1032.4 1031.8 1029.5 ****** 1016.9 1023.2 1028.2 1033.2 1034.0 1030.0 ****** DAY 16 5 16 1 4 ** 26 20 30 15 5 4 MIN. QFE PRESSURE IN HPA 1011.8 1005.8 1002.7 1005.0 1011.1 ****** 1007.2 1004.3 1004.3 1013.1 1011.0 998.9 ****** DAY 30 29 2 22 18 ** 8 28 8 30 19 25 MEAN QNH PRESSURE IN HPA 1021.3 1020.6 1014.9 1016.1 1017.5 ****** 1008.1 1010.8 1015.5 1019.8 1018.9 1016.9 ****** MAX. QNH PRESSURE IN HPA 1030.4 1033.8 1029.9 1029.3 1027.0 ****** 1014.4 1020.7 1025.7 1030.7 1031.5 1027.5 ****** DAY 16 5 16 1 4 ** 26 20 30 15 5 4 MIN. QNH PRESSURE IN HPA 1009.3 1003.4 1000.3 1002.6 1008.6 ****** 1004.7 1001.9 1001.9 1010.6 1008.5 996.5 ****** DAY 30 29 2 22 18 ** 8 28 8 30 19 25 MEAN QFF PRESSURE IN HPA 1021.5 1020.8 1015.2 1016.4 1017.8 ****** 1008.5 1011.2 1015.9 1020.1 1019.2 1017.2 ****** MAX. QFF PRESSURE IN HPA 1030.6 1034.0 1030.2 1029.6 1027.3 ****** 1014.8 1021.1 1026.0 1031.0 1031.8 1027.8 ****** DAY 16 5 16 1 4 ** 26 20 30 15 5 4 MIN. QFF PRESSURE IN HPA 1009.6 1003.6 1000.5 1002.9 1009.0 ****** 1005.2 1002.2 1002.3 1011.0 1008.8 996.7 ****** DAY 30 29 2 22 18 ** 8 28 8 30 19 25 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ASTARA (40709) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 38 25 N LONGITUDE 48 52 E DATA PROCESSING CENTER ELEVATION -18.0 M MEANS AND EXTREMES FOR THE YEAR 1989 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AIR TEMPERATURE (C) 4.0 4.1 9.5 13.9 18.2 23.2 26.1 25.6 21.6 16.6 13.2 7.5 15.3 MINIMUN AIR TEMPERATURE (C) 0.9 0.4 7.0 10.3 14.6 18.5 22.1 21.9 18.0 14.3 10.1 4.9 11.9 DAYS WITH MINIMUM TEMP. >=21 0 0 0 0 0 3 24 21 7 0 0 0 55 DAYS WITH MINIMUM TEMP. <=-4 1 1 0 0 0 0 0 0 0 0 0 0 2 DAYS WITH FREEZING MIN.<= 0 12 14 0 0 0 0 0 0 0 0 0 0 26 TEMPERATURE RECORDS LOWEST(C) -5.2 -4.8 3.4 4.6 10.2 15.2 19.6 17.6 12.2 9.4 3.0 0.8 -5.2 DAY 4 15 31 2 1 1 2 20 20 25 21 8 MAXIMUM AIR TEMPERATURE (C) 8.4 8.5 12.8 17.9 21.9 27.7 30.3 29.5 25.3 19.8 16.9 10.8 19.2 DAYS WITH MAXIMUM TEMP. >=30 0 0 0 0 0 4 18 13 4 1 0 0 40 DAYS WITH MAXIMUM TEMP. <= 0 0 0 0 0 0 0 0 0 0 0 0 0 0 TEMPERATURE RECORDS HIGHEST(C) 13.6 22.8 18.6 23.5 28.0 31.0 34.0 32.2 30.4 32.6 29.2 22.0 34.0 DAY 2 28 1 27 7 19 1 5 9 2 27 11 DIF. BETWEEN (MAX.-MIN.) (C) 7.5 8.1 5.8 7.6 7.3 9.2 8.2 7.6 7.3 5.5 6.8 5.9 7.3 MEAN DAILY TEMP. (MDT) (C) 4.7 4.5 9.9 14.1 18.2 23.1 26.2 25.7 21.7 17.0 13.5 7.9 15.5 COOLING DEG. DAYS(BASE 21 0C) 0.0 0.0 0.0 0.0 2.2 65.5 161.3 146.0 56.4 3.9 0.0 0.0 435.4 HEATING DEG. DAYS(BASE 18 0C) 413.6 366.0 241.7 113.0 21.0 0.0 0.0 0.0 7.5 52.2 139.8 314.2 1668.9 DEWPOINT (MEAN C) 0.6 1.2 6.9 11.0 14.7 17.7 20.8 21.2 18.4 15.2 10.1 5.2 11.9 MIXING RATIO (G/KG) 3.95 4.14 6.19 8.22 10.48 12.79 15.71 16.03 13.50 10.88 7.80 5.52 9.60 VAPOUR PRESSURE (HPA) 6.47 6.79 10.04 13.31 16.86 20.41 24.93 25.41 21.55 17.54 12.64 8.99 15.41 SATURATION DEF. (HPA) 1.84 1.75 1.94 2.94 4.32 8.48 9.41 7.92 5.02 1.73 3.00 1.50 4.15 RELATIVE HUMIDITY (MEAN %) 80 83 85 84 81 73 75 78 83 92 85 87 82 RELATIVE HUMIDITY (MAX. %) 92 94 94 96 95 92 91 93 95 99 96 97 95 RELATIVE HUMIDITY (MIN. %) 61 66 72 68 65 54 58 61 68 82 66 73 66 RELATIVE HUMIDITY (MEAN% 03UTC) 84 90 89 93 88 84 83 89 91 96 88 89 89 RELATIVE HUMIDITY (MEAN% 09UTC) 68 68 75 72 70 57 61 68 73 84 78 79 71 RELATIVE HUMIDITY (MEAN% 15UTC) 84 86 84 79 80 67 68 71 83 92 90 89 81 RH=0 => RELATIVE HUMIDITY < 0.5% AMOUNT OF PRECIPITATION MM. 107.8 157.7 38.2 7.3 36.7 7.0 31.8 36.9 261.0 383.5 92.3 70.7 1230.9 DAYS WITH PRECIPITATION >=10 4 4 1 0 1 0 1 1 5 10 4 2 33 DAYS WITH PRECIPITATION >= 5 4 5 2 0 4 0 2 2 6 12 5 2 44 DAYS WITH PRECIPITATION >= 1 8 8 4 3 6 1 3 3 6 17 14 8 81 DAYS WITH PRECIPITATION 12 10 11 11 13 6 7 10 10 23 17 13 143 GREATEST DAILY PRECIPITATION 35.0 82.0 29.0 3.1 13.0 4.0 20.0 24.1 124.6 93.0 21.0 38.0 124.6 DAY 3 11 29 18 11 8 10 17 21 14 6 1 DAY WITH THUNDER STORM 0 0 0 5 6 2 2 10 4 1 0 0 30 DAYS WITH SNOW OR SLEET 4 6 0 0 0 0 0 0 0 0 0 0 10 DAYS WITH DUST 0 0 0 0 0 0 0 0 0 0 0 0 0 WIND DIRECTION (PREVAILING) 315 135 135 135 135 135 135 135 315 360 360 360 135 PREVAILING WIND SPEED(KNOTS) 7.1 6.1 7.3 6.3 6.8 8.4 7.3 6.3 7.4 6.5 5.7 5.0 6.8 PREVAILING WIND PERCENT 14.1 8.0 13.3 16.7 21.0 17.5 13.3 10.5 10.8 17.7 9.6 15.7 10.0 CALMS PERCENT OF WIND 60.9 67.0 53.6 56.3 50.4 48.8 50.4 54.4 51.3 54.8 61.3 63.7 56.0 NO. OF WIND OBSERVATION 248 224 248 240 248 240 248 248 240 248 240 248 2920 VECTOR WIND DIRECTION (MEAN) 313 115 133 143 130 135 91 110 357 344 298 328 100 VECTOR WIND MAGNITUDE(KNOTS) 1.1 0.1 1.1 1.5 1.7 2.5 1.5 1.0 0.8 1.7 0.5 1.0 0.4 WIND STEADINESES (MEAN %) 42.3 5.0 36.7 51.7 54.8 69.4 50.0 40.0 29.6 63.0 18.5 52.6 14.8 WIND SPEED (MEAN KNOTS) 2.6 2.0 3.0 2.9 3.1 3.6 3.0 2.5 2.7 2.7 2.7 1.9 2.7 FASTEST WIND DIRECTION 260 160 170 320 160 150 360 140 330 30 210 240 210 FASTEST WIND SPEED (KNOTS) 19 16 19 19 16 19 12 14 16 19 29 27 29 DAY 1 20 16 4 11 18 5 14 18 2 27 8 DAYS WITH SKY CLEAR (0-2)/8 14 15 5 12 8 19 13 13 13 5 7 4 128 DAYS WITH P.CLOUDY (3-6)/8 7 6 10 7 17 10 13 11 10 9 6 10 116 DAYS WITH CLOUDY (7-8)/8 10 7 16 11 6 1 5 7 7 17 17 17 121 DAYS WITH VISIBILITY =< 2 KM 5 6 9 6 5 0 1 0 5 11 8 6 62 DURATION OF SUNSHINE HOURS 142.2 175.3 97.2 190.3 203.3 288.8 231.2 155.6 150.3 86.1 104.9 78.4 1903.6 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ASTARA (40709) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 38 25 N LONGITUDE 48 52 E DATA PROCESSING CENTER ELEVATION -18.0 M MEANS AND EXTREMES FOR THE YEAR 1989 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL MEAN QFE PRESSURE IN HPA 1025.8 1027.8 1019.5 1020.9 1018.1 1013.2 1012.7 1012.4 1016.2 1021.7 1021.4 1023.1 1019.4 MAX. QFE PRESSURE IN HPA 1039.0 1038.6 1029.0 1029.2 1026.4 1020.2 1021.4 1022.8 1031.6 1034.9 1032.7 1033.1 1039.0 DAY-HOUR 28- 6 3- 6 11-18 8- 6 1- 0 2- 6 10- 6 18- 9 22- 6 23- 6 21-18 2- 6 MIN. QFE PRESSURE IN HPA 1009.2 1014.4 1005.1 1012.8 1002.9 1004.9 1003.8 1003.8 1005.8 1003.1 1007.6 1007.8 1002.9 DAY-HOUR 1- 9 1- 0 26-15 15- 3 6-15 10-15 31-18 1- 0 1-15 2- 9 27-15 11- 3 MEAN QNH PRESSURE IN HPA 1023.4 1025.3 1017.0 1018.4 1015.6 1010.8 1010.2 1010.0 1013.7 1019.2 1018.9 1020.6 1016.9 MAX. QNH PRESSURE IN HPA 1036.5 1036.1 1026.5 1026.7 1023.9 1017.7 1018.9 1020.3 1029.1 1032.4 1030.2 1030.6 1036.5 DAY-HOUR 28- 6 3- 6 11-18 8- 6 1- 0 2- 6 10- 6 18- 9 22- 6 23- 6 21-18 2- 6 MIN. QNH PRESSURE IN HPA 1006.7 1011.9 1002.7 1010.3 1000.5 1002.5 1001.4 1001.4 1003.4 1000.7 1005.1 1005.3 1000.5 DAY-HOUR 1- 9 1- 0 26-15 15- 3 6-15 10-15 31-18 1- 0 1-15 2- 9 27-15 11- 3 MEAN QFF PRESSURE IN HPA 1023.6 1025.5 1017.3 1018.7 1015.9 1011.1 1010.6 1010.4 1014.0 1019.5 1019.2 1020.9 1017.2 MAX. QFF PRESSURE IN HPA 1036.7 1036.3 1026.8 1027.0 1024.2 1018.1 1019.3 1020.7 1029.4 1032.7 1030.5 1030.8 1036.7 DAY-HOUR 28- 6 3- 6 11-18 8- 6 20- 9 2- 6 10- 6 18-18 22- 6 23- 6 21-18 2- 6 MIN. QFF PRESSURE IN HPA 1007.0 1012.2 1002.9 1010.6 1000.8 1002.8 1001.8 1001.8 1003.7 1001.0 1005.5 1005.6 1000.8 DAY-HOUR 1- 9 1- 0 26-15 15- 3 6-15 10-15 31-21 1- 0 1-15 2- 9 27-18 11- 3 PRESSURE AT HOUR 0000 UTC. MEAN QFE PRESSURE IN HPA 1025.7 1027.0 1018.8 1020.0 1018.0 1013.2 1012.5 1012.1 1015.9 1021.1 1020.8 1023.1 1019.0 MAX. QFE PRESSURE IN HPA 1037.6 1037.0 1027.2 1028.0 1026.4 1019.4 1020.4 1021.0 1030.0 1034.0 1030.0 1031.8 1037.6 DAY 22 8 12 8 1 2 10 19 22 23 7 2 MIN. QFE PRESSURE IN HPA 1012.4 1014.4 1006.3 1013.3 1004.2 1006.2 1006.0 1003.8 1008.6 1004.0 1008.9 1008.1 1003.8 DAY 17 1 27 15 7 11 31 1 2 2 27 11 MEAN QNH PRESSURE IN HPA 1023.2 1024.6 1016.4 1017.5 1015.5 1010.7 1010.0 1009.6 1013.4 1018.6 1018.4 1020.6 1016.5 MAX. QNH PRESSURE IN HPA 1035.1 1034.5 1024.7 1025.5 1023.9 1016.9 1017.9 1018.5 1027.5 1031.5 1027.5 1029.3 1035.1 DAY 22 8 12 8 1 2 10 19 22 23 7 2 MIN. QNH PRESSURE IN HPA 1009.9 1011.9 1003.9 1010.8 1001.8 1003.8 1003.6 1001.4 1006.1 1001.6 1006.4 1005.6 1001.4 DAY 17 1 27 15 7 11 31 1 2 2 27 11 MEAN QFF PRESSURE IN HPA 1023.4 1024.5 1016.6 1017.8 1015.9 1011.1 1010.4 1010.0 1013.8 1018.9 1018.7 1020.8 1016.8 MAX. QFF PRESSURE IN HPA 1035.3 1034.7 1025.0 1025.8 1024.2 1017.3 1018.3 1018.9 1027.8 1031.8 1027.8 1029.5 1035.3 DAY 22 8 12 8 1 2 10 19 22 23 7 2 MIN. QFF PRESSURE IN HPA 1010.2 1012.2 1004.1 1011.1 1002.1 1004.1 1003.9 1001.8 1006.6 1001.9 1006.8 1005.9 1001.8 DAY 17 1 27 15 7 11 31 1 2 2 27 11 PRESSURE AT HOUR 0300 UTC. MEAN QFE PRESSURE IN HPA 1025.8 1027.6 1019.2 1020.8 1018.6 1013.8 1013.4 1012.8 1016.6 1021.6 1021.1 1023.2 1019.5 MAX. QFE PRESSURE IN HPA 1037.6 1036.9 1027.8 1028.0 1026.2 1019.6 1021.0 1021.9 1030.8 1033.7 1030.2 1032.2 1037.6 DAY 28 8 12 8 1 2 10 19 22 23 8 2 MIN. QFE PRESSURE IN HPA 1011.4 1014.9 1007.1 1012.8 1006.8 1007.1 1006.8 1005.2 1009.4 1003.8 1009.8 1007.8 1003.8 DAY 1 23 27 15 7 11 31 1 12 2 27 11 MEAN QNH PRESSURE IN HPA 1023.3 1025.1 1016.8 1018.3 1016.1 1011.4 1010.9 1010.3 1014.1 1019.1 1018.6 1020.7 1017.1 MAX. QNH PRESSURE IN HPA 1035.1 1034.4 1025.3 1025.5 1023.7 1017.1 1018.5 1019.4 1028.3 1031.2 1027.7 1029.7 1035.1 DAY 28 8 12 8 1 2 10 19 22 23 8 2 MIN. QNH PRESSURE IN HPA 1008.9 1012.4 1004.6 1010.3 1004.4 1004.6 1004.4 1002.8 1006.9 1001.4 1007.3 1005.3 1001.4 DAY 1 23 27 15 7 11 31 1 12 2 27 11 MEAN QFF PRESSURE IN HPA 1023.5 1025.3 1017.0 1018.6 1016.4 1011.7 1011.3 1010.7 1014.5 1019.4 1018.9 1020.9 1017.4 MAX. QFF PRESSURE IN HPA 1035.3 1034.6 1025.6 1025.8 1024.0 1017.5 1018.9 1019.8 1028.6 1031.5 1028.0 1029.9 1035.3 DAY 28 8 12 8 1 2 10 19 22 23 8 2 MIN. QFF PRESSURE IN HPA 1009.2 1012.7 1004.9 1010.6 1004.7 1005.0 1004.7 1003.2 1007.3 1001.7 1007.7 1005.6 1001.7 DAY 1 23 27 15 7 11 31 1 12 2 27 11 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ASTARA (40709) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 38 25 N LONGITUDE 48 52 E DATA PROCESSING CENTER ELEVATION -18.0 M MEANS AND EXTREMES FOR THE YEAR 1989 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 0600 UTC. MEAN QFE PRESSURE IN HPA 1027.1 1029.3 1020.4 1022.0 1019.1 1014.2 1013.8 1013.6 1017.6 1022.9 1022.5 1024.3 1020.6 MAX. QFE PRESSURE IN HPA 1039.0 1038.6 1028.8 1029.2 1026.3 1020.2 1021.4 1022.3 1031.6 1034.9 1031.2 1033.1 1039.0 DAY 28 3 12 8 20 2 10 19 22 23 7 2 MIN. QFE PRESSURE IN HPA 1010.9 1017.3 1009.1 1013.7 1007.2 1007.2 1006.8 1006.4 1010.0 1003.8 1010.1 1010.0 1003.8 DAY 1 23 27 15 6 10 31 1 1 2 27 11 MEAN QNH PRESSURE IN HPA 1024.6 1026.8 1017.9 1019.6 1016.6 1011.7 1011.3 1011.1 1015.1 1020.4 1020.0 1021.8 1018.1 MAX. QNH PRESSURE IN HPA 1036.5 1036.1 1026.3 1026.7 1023.8 1017.7 1018.9 1019.8 1029.1 1032.4 1028.7 1030.6 1036.5 DAY 28 3 12 8 20 2 10 19 22 23 7 2 MIN. QNH PRESSURE IN HPA 1008.4 1014.8 1006.6 1011.2 1004.7 1004.7 1004.4 1004.0 1007.5 1001.4 1007.6 1007.5 1001.4 DAY 1 23 27 15 6 10 31 1 1 2 27 11 MEAN QFF PRESSURE IN HPA 1024.8 1027.0 1018.2 1019.9 1016.9 1012.1 1011.7 1011.5 1015.5 1020.7 1020.3 1022.0 1018.4 MAX. QFF PRESSURE IN HPA 1036.7 1036.3 1026.6 1027.0 1024.2 1018.1 1019.3 1020.2 1029.4 1032.7 1029.0 1030.8 1036.7 DAY 28 3 12 8 20 2 10 19 22 23 8 2 MIN. QFF PRESSURE IN HPA 1008.7 1015.1 1006.9 1011.5 1005.1 1005.1 1004.8 1004.4 1007.9 1001.7 1008.0 1007.8 1001.7 DAY 1 23 27 15 6 10 31 1 1 2 27 11 PRESSURE AT HOUR 0900 UTC. MEAN QFE PRESSURE IN HPA 1025.8 1028.4 1019.9 1021.5 1018.5 1013.5 1013.1 1013.0 1016.4 1021.7 1021.5 1023.0 1019.7 MAX. QFE PRESSURE IN HPA 1038.2 1036.8 1027.2 1028.0 1026.4 1020.0 1020.9 1022.8 1030.8 1034.6 1030.8 1031.4 1038.2 DAY 28 3 12 8 20 6 10 18 22 23 7 2 MIN. QFE PRESSURE IN HPA 1009.2 1016.6 1008.4 1013.0 1005.4 1006.8 1006.0 1006.4 1008.6 1003.1 1008.7 1011.2 1003.1 DAY 1 27 26 15 6 10 31 1 12 2 27 11 MEAN QNH PRESSURE IN HPA 1023.3 1025.9 1017.5 1019.0 1016.0 1011.1 1010.7 1010.5 1014.0 1019.3 1019.1 1020.5 1017.2 MAX. QNH PRESSURE IN HPA 1035.7 1034.3 1024.7 1025.5 1023.9 1017.5 1018.4 1020.3 1028.3 1032.1 1028.3 1028.9 1035.7 DAY 28 3 12 8 20 6 10 18 22 23 7 2 MIN. QNH PRESSURE IN HPA 1006.7 1014.1 1005.9 1010.5 1003.0 1004.4 1003.6 1004.0 1006.1 1000.7 1006.2 1008.7 1000.7 DAY 1 27 26 15 6 10 31 1 12 2 27 11 MEAN QFF PRESSURE IN HPA 1023.5 1026.1 1017.7 1019.3 1016.3 1011.4 1011.1 1010.9 1014.3 1019.6 1019.4 1020.7 1017.5 MAX. QFF PRESSURE IN HPA 1035.9 1034.5 1025.0 1025.8 1024.2 1017.9 1018.8 1020.7 1028.6 1032.4 1028.6 1029.1 1035.9 DAY 28 3 12 8 20 6 10 18 22 23 7 2 MIN. QFF PRESSURE IN HPA 1007.0 1014.4 1006.2 1010.8 1003.3 1004.7 1004.0 1004.4 1006.5 1001.0 1006.6 1009.0 1001.0 DAY 1 27 26 15 6 10 31 1 12 2 27 11 PRESSURE AT HOUR 1200 UTC. MEAN QFE PRESSURE IN HPA 1025.0 1027.4 1019.0 1020.5 1017.5 1012.6 1012.2 1011.9 1015.3 1020.9 1021.0 1022.4 1018.8 MAX. QFE PRESSURE IN HPA 1037.8 1035.8 1026.8 1026.6 1025.3 1018.5 1019.9 1021.4 1030.0 1033.9 1030.4 1030.4 1037.8 DAY 21 3 11 8 20 6 10 18 22 23 7 2 MIN. QFE PRESSURE IN HPA 1009.2 1014.4 1006.4 1013.0 1003.3 1005.3 1004.9 1005.6 1006.4 1006.4 1007.8 1010.0 1003.3 DAY 1 27 26 15 6 10 31 1 1 1 27 8 MEAN QNH PRESSURE IN HPA 1022.5 1024.9 1016.6 1018.1 1015.0 1010.2 1009.7 1009.4 1012.9 1018.4 1018.5 1019.9 1016.3 MAX. QNH PRESSURE IN HPA 1035.3 1033.3 1024.3 1024.1 1022.8 1016.0 1017.4 1018.9 1027.5 1031.4 1027.9 1027.9 1035.3 DAY 21 3 11 8 20 6 10 18 22 23 7 2 MIN. QNH PRESSURE IN HPA 1006.7 1011.9 1004.0 1010.5 1000.9 1002.9 1002.5 1003.2 1004.0 1004.0 1005.3 1007.5 1000.9 DAY 1 27 26 15 6 10 31 1 1 1 27 8 MEAN QFF PRESSURE IN HPA 1022.7 1024.9 1016.8 1018.3 1015.4 1010.5 1010.1 1009.8 1013.2 1018.7 1018.8 1020.2 1016.6 MAX. QFF PRESSURE IN HPA 1035.5 1033.5 1024.6 1024.4 1023.1 1016.4 1017.8 1019.3 1027.8 1031.7 1028.2 1028.1 1035.5 DAY 21 3 11 8 20 6 10 18 22 23 7 2 MIN. QFF PRESSURE IN HPA 1007.0 1012.2 1004.2 1010.9 1001.2 1003.2 1002.9 1003.6 1004.4 1004.3 1005.7 1007.8 1001.2 DAY 1 27 26 15 6 10 31 1 1 1 27 8 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ASTARA (40709) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 38 25 N LONGITUDE 48 52 E DATA PROCESSING CENTER ELEVATION -18.0 M MEANS AND EXTREMES FOR THE YEAR 1989 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 1500 UTC. MEAN QFE PRESSURE IN HPA 1025.6 1027.6 1019.3 1020.4 1017.2 1012.3 1011.8 1011.5 1015.3 1021.4 1021.6 1022.9 1018.9 MAX. QFE PRESSURE IN HPA 1038.0 1035.9 1028.0 1027.1 1025.0 1018.2 1019.8 1021.4 1029.0 1033.9 1031.8 1030.8 1038.0 DAY 28 7 11 30 20 6 10 18 21 23 21 2 MIN. QFE PRESSURE IN HPA 1010.3 1014.8 1005.1 1013.1 1002.9 1004.9 1004.1 1005.2 1005.8 1006.0 1007.6 1010.0 1002.9 DAY 1 27 26 14 6 10 31 2 1 1 27 8 MEAN QNH PRESSURE IN HPA 1023.1 1025.1 1016.8 1018.0 1014.7 1009.9 1009.3 1009.1 1012.8 1018.9 1019.1 1020.5 1016.4 MAX. QNH PRESSURE IN HPA 1035.5 1033.4 1025.5 1024.6 1022.5 1015.7 1017.3 1018.9 1026.5 1031.4 1029.3 1028.3 1035.5 DAY 28 7 11 30 20 6 10 18 21 23 21 2 MIN. QNH PRESSURE IN HPA 1007.8 1012.3 1002.7 1010.6 1000.5 1002.5 1001.7 1002.8 1003.4 1003.6 1005.1 1007.5 1000.5 DAY 1 27 26 14 6 10 31 2 1 1 27 8 MEAN QFF PRESSURE IN HPA 1023.3 1025.3 1017.1 1018.3 1015.1 1010.3 1009.7 1009.4 1013.2 1019.2 1019.4 1020.7 1016.7 MAX. QFF PRESSURE IN HPA 1035.7 1033.6 1025.8 1024.9 1022.8 1016.1 1017.7 1019.3 1026.8 1031.7 1029.5 1028.5 1035.7 DAY 28 7 11 30 20 6 10 18 21 23 21 2 MIN. QFF PRESSURE IN HPA 1008.1 1012.6 1002.9 1010.9 1000.8 1002.8 1002.1 1003.1 1003.7 1003.9 1005.5 1007.8 1000.8 DAY 1 27 26 14 6 10 31 2 1 1 27 8 PRESSURE AT HOUR 1800 UTC. MEAN QFE PRESSURE IN HPA 1026.2 1028.0 1019.9 1021.2 1018.0 1013.2 1012.5 1012.5 1016.2 1022.1 1021.5 1023.1 1019.5 MAX. QFE PRESSURE IN HPA 1038.0 1037.4 1029.0 1028.0 1025.0 1019.1 1020.8 1022.8 1030.4 1034.4 1032.7 1031.1 1038.0 DAY 21 7 11 30 20 1 9 18 21 23 21 1 MIN. QFE PRESSURE IN HPA 1011.7 1014.8 1005.2 1013.8 1003.8 1007.1 1003.8 1006.2 1006.6 1005.8 1007.6 1009.0 1003.8 DAY 1 27 26 14 6 10 31 1 1 1 27 10 MEAN QNH PRESSURE IN HPA 1023.7 1025.5 1017.4 1018.8 1015.5 1010.8 1010.1 1010.0 1013.7 1019.6 1019.1 1020.7 1017.1 MAX. QNH PRESSURE IN HPA 1035.5 1034.9 1026.5 1025.5 1022.5 1016.6 1018.3 1020.3 1027.9 1031.9 1030.2 1028.6 1035.5 DAY 21 7 11 30 20 1 9 18 21 23 21 1 MIN. QNH PRESSURE IN HPA 1009.2 1012.3 1002.8 1011.3 1001.4 1004.6 1001.4 1003.8 1004.2 1003.4 1005.1 1006.5 1001.4 DAY 1 27 26 14 6 10 31 1 1 1 27 10 MEAN QFF PRESSURE IN HPA 1023.9 1025.7 1017.7 1019.1 1015.9 1011.1 1010.5 1010.4 1014.1 1020.0 1019.3 1020.9 1017.4 MAX. QFF PRESSURE IN HPA 1035.7 1035.1 1026.8 1025.8 1022.9 1017.0 1018.7 1020.7 1028.2 1032.2 1030.5 1028.8 1035.7 DAY 21 7 11 30 20 1 9 18 21 23 21 1 MIN. QFF PRESSURE IN HPA 1009.5 1012.6 1003.0 1011.6 1001.7 1005.0 1001.8 1004.2 1004.6 1003.7 1005.5 1006.8 1001.7 DAY 1 27 26 14 6 10 31 1 1 1 27 10 PRESSURE AT HOUR 2100 UTC. MEAN QFE PRESSURE IN HPA 1025.8 1027.4 1019.4 1020.7 1017.7 1013.0 1012.3 1012.3 1016.1 1021.9 1021.0 1023.1 1019.2 MAX. QFE PRESSURE IN HPA 1038.0 1037.4 1028.2 1028.6 1024.4 1019.3 1020.8 1021.4 1030.0 1034.0 1031.7 1031.8 1038.0 DAY 21 7 11 7 28 1 9 18 21 22 21 1 MIN. QFE PRESSURE IN HPA 1012.6 1014.8 1006.0 1013.0 1003.1 1006.8 1003.8 1005.7 1007.0 1005.5 1008.8 1008.7 1003.1 DAY 1 27 26 14 6 10 31 1 1 1 27 10 MEAN QNH PRESSURE IN HPA 1023.3 1024.9 1016.9 1018.3 1015.3 1010.5 1009.8 1009.8 1013.6 1019.5 1018.5 1020.6 1016.8 MAX. QNH PRESSURE IN HPA 1035.5 1034.9 1025.7 1026.1 1021.9 1016.8 1018.3 1018.9 1027.5 1031.5 1029.2 1029.3 1035.5 DAY 21 7 11 7 28 1 9 18 21 22 21 1 MIN. QNH PRESSURE IN HPA 1010.1 1012.3 1003.6 1010.5 1000.7 1004.4 1001.4 1003.3 1004.5 1003.1 1006.3 1006.2 1000.7 DAY 1 27 26 14 6 10 31 1 1 1 27 10 MEAN QFF PRESSURE IN HPA 1023.5 1025.1 1017.2 1018.6 1015.6 1010.9 1010.2 1010.2 1013.9 1019.8 1018.8 1020.9 1017.1 MAX. QFF PRESSURE IN HPA 1035.7 1035.1 1026.0 1026.4 1022.2 1017.2 1018.7 1019.3 1027.8 1031.8 1029.5 1029.5 1035.7 DAY 21 7 11 7 28 1 9 18 21 22 21 1 MIN. QFF PRESSURE IN HPA 1010.4 1012.6 1003.8 1010.8 1001.0 1004.7 1001.8 1003.7 1005.0 1003.4 1006.7 1006.5 1001.0 DAY 1 27 26 14 6 10 31 1 1 1 27 10 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ASTARA (40709) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 38 25 N LONGITUDE 48 52 E DATA PROCESSING CENTER ELEVATION -18.0 M MEANS AND EXTREMES FOR THE YEAR 1990 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AIR TEMPERATURE (C) 3.6 6.0 8.2 12.1 16.8 22.6 25.2 24.0 22.0 16.2 13.2 7.0 14.7 MINIMUN AIR TEMPERATURE (C) 0.8 3.1 5.6 9.3 13.4 18.5 21.0 20.6 18.5 13.4 10.3 5.0 11.6 DAYS WITH MINIMUM TEMP. >=21 0 0 0 0 0 2 16 12 3 0 0 0 33 DAYS WITH MINIMUM TEMP. <=-4 2 0 0 0 0 0 0 0 0 0 0 0 2 DAYS WITH FREEZING MIN.<= 0 14 1 3 0 0 0 0 0 0 0 0 2 20 TEMPERATURE RECORDS LOWEST(C) -7.0 0.0 -1.6 4.4 9.8 15.0 17.2 18.6 16.0 8.5 5.8 -0.6 -7.0 DAY 8 5 18 2 5 1 6 1 18 16 14 30 MAXIMUM AIR TEMPERATURE (C) 7.3 9.6 12.2 15.4 20.5 26.8 29.6 28.0 26.3 19.7 17.1 10.0 18.5 DAYS WITH MAXIMUM TEMP. >=30 0 0 0 0 0 1 16 4 1 0 0 0 22 DAYS WITH MAXIMUM TEMP. <= 0 2 0 0 0 0 0 0 0 0 0 0 0 2 TEMPERATURE RECORDS HIGHEST(C) 10.8 20.8 23.8 23.0 25.4 30.2 32.2 30.8 33.4 24.8 23.2 22.4 33.4 DAY 18 28 1 28 19 14 16 16 14 22 3 6 DIF. BETWEEN (MAX.-MIN.) (C) 6.5 6.5 6.6 6.1 7.1 8.3 8.6 7.4 7.8 6.3 6.8 5.0 6.9 MEAN DAILY TEMP. (MDT) (C) 4.0 6.4 8.9 12.3 16.9 22.6 25.3 24.3 22.4 16.5 13.7 7.5 15.1 COOLING DEG. DAYS(BASE 21 0C) 0.0 0.0 0.0 0.0 0.0 50.3 127.2 103.1 45.0 0.0 0.0 0.0 325.6 HEATING DEG. DAYS(BASE 18 0C) 432.9 325.0 283.2 171.4 43.5 0.0 0.0 0.0 0.0 55.1 129.3 324.5 1765.0 DEWPOINT (MEAN C) 1.5 3.6 5.7 10.4 14.3 19.1 21.0 20.5 19.6 14.9 11.7 5.5 12.3 MIXING RATIO (G/KG) 4.25 4.93 5.74 7.94 10.25 14.00 15.82 15.19 14.39 10.63 8.60 5.80 9.79 VAPOUR PRESSURE (HPA) 6.96 8.03 9.36 12.82 16.50 22.26 25.09 24.18 22.95 17.16 13.93 9.46 15.73 SATURATION DEF. (HPA) 1.11 1.58 1.93 1.57 2.98 5.60 7.63 6.02 3.98 1.51 1.52 0.99 3.03 RELATIVE HUMIDITY (MEAN %) 87 86 86 90 86 82 79 82 87 93 91 91 87 RELATIVE HUMIDITY (MAX. %) 97 97 96 98 97 94 94 95 97 100 99 98 97 RELATIVE HUMIDITY (MIN. %) 75 73 72 79 72 67 64 67 73 83 78 79 74 RELATIVE HUMIDITY (MEAN% 03UTC) 89 91 90 95 91 87 84 89 94 97 96 93 91 RELATIVE HUMIDITY (MEAN% 09UTC) 78 79 79 84 77 71 67 70 76 86 82 84 78 RELATIVE HUMIDITY (MEAN% 15UTC) 92 88 86 88 84 77 74 78 88 97 95 94 87 RH=0 => RELATIVE HUMIDITY < 0.5% AMOUNT OF PRECIPITATION MM. 107.0 108.1 87.0 88.7 40.9 20.9 32.2 41.3 142.2 348.1 83.9 291.1 1391.4 DAYS WITH PRECIPITATION >=10 5 4 2 4 1 1 1 1 3 8 5 7 42 DAYS WITH PRECIPITATION >= 5 6 8 5 5 3 1 2 4 4 14 7 10 69 DAYS WITH PRECIPITATION >= 1 10 12 14 10 7 2 3 6 7 15 10 17 113 DAYS WITH PRECIPITATION 13 15 17 15 10 4 8 8 9 16 12 20 147 GREATEST DAILY PRECIPITATION 28.0 20.0 29.0 19.0 18.2 18.2 20.6 14.4 62.0 65.0 15.0 87.3 87.3 DAY 6 21 16 2 13 17 30 26 30 24 11 11 DAY WITH THUNDER STORM 0 0 1 0 0 5 3 2 0 0 2 0 13 DAYS WITH SNOW OR SLEET 4 1 3 0 0 0 0 0 0 0 0 7 15 DAYS WITH DUST 0 0 0 0 0 0 0 0 0 0 0 1 1 WIND DIRECTION (PREVAILING) 360 180 360 180 135 135 135 135 135 360 360 360 360 PREVAILING WIND SPEED(KNOTS) 6.8 5.6 7.0 5.3 6.1 6.6 6.7 6.5 6.8 5.7 5.7 4.9 5.8 PREVAILING WIND PERCENT 13.7 12.9 11.3 9.2 17.7 20.8 10.9 11.3 10.8 12.5 12.1 25.0 9.0 CALMS PERCENT OF WIND 69.0 51.8 62.5 62.1 48.0 55.0 62.1 57.3 62.1 66.5 70.8 52.8 60.0 NO. OF WIND OBSERVATION 248 224 248 240 248 240 248 248 240 248 240 248 2920 VECTOR WIND DIRECTION (MEAN) 344 194 339 112 142 145 106 109 101 341 344 340 82 VECTOR WIND MAGNITUDE(KNOTS) 1.0 0.2 0.2 0.7 1.8 2.3 0.8 0.9 0.4 1.1 0.6 2.2 0.3 WIND STEADINESES (MEAN %) 50.0 8.0 8.3 36.8 58.1 76.7 38.1 39.1 17.4 57.9 42.9 81.5 13.0 WIND SPEED (MEAN KNOTS) 2.0 2.5 2.4 1.9 3.1 3.0 2.1 2.3 2.3 1.9 1.4 2.7 2.3 FASTEST WIND DIRECTION 360 270 240 160 170 160 150 150 280 330 350 330 240 FASTEST WIND SPEED (KNOTS) 16 23 35 12 16 19 14 14 16 17 14 23 35 DAY 5 28 2 23 3 6 13 16 16 14 11 25 DAYS WITH SKY CLEAR (0-2)/8 8 4 9 6 15 14 17 11 15 10 7 5 121 DAYS WITH P.CLOUDY (3-6)/8 11 11 7 8 7 12 7 12 8 6 8 7 104 DAYS WITH CLOUDY (7-8)/8 12 13 15 16 9 4 7 8 7 15 15 19 140 DAYS WITH VISIBILITY =< 2 KM 6 6 12 11 5 0 0 0 5 12 7 9 73 DURATION OF SUNSHINE HOURS 125.9 113.7 113.1 87.1 215.3 237.5 221.3 ****** 120.3 125.0 108.1 62.8 ****** ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ASTARA (40709) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 38 25 N LONGITUDE 48 52 E DATA PROCESSING CENTER ELEVATION -18.0 M MEANS AND EXTREMES FOR THE YEAR 1990 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL MEAN QFE PRESSURE IN HPA 1027.0 1022.5 1025.5 1017.8 1018.1 1012.3 1012.4 1014.8 1015.3 1022.4 1022.4 1026.0 1019.7 MAX. QFE PRESSURE IN HPA 1038.0 1036.0 1050.0 1031.0 1030.7 1021.6 1021.6 1023.0 1025.0 1039.4 1035.0 1036.0 1050.0 DAY-HOUR 9- 6 4- 6 16-18 3- 6 15-18 4-18 31- 3 29-18 16- 6 15- 6 13-18 12- 6 MIN. QFE PRESSURE IN HPA 1012.9 1002.4 1010.3 1005.4 1000.0 1002.2 1003.4 1008.0 1001.0 1008.4 1008.4 1015.4 1000.0 DAY-HOUR 17-12 15-15 1-12 12- 0 2-12 26-21 27-15 7-12 13-21 31-21 9-15 17-12 MEAN QNH PRESSURE IN HPA 1024.5 1020.0 1023.0 1015.3 1015.7 1009.8 1010.0 1012.3 1012.8 1019.9 1019.9 1023.5 1017.2 MAX. QNH PRESSURE IN HPA 1035.5 1033.5 1047.5 1028.5 1028.2 1019.1 1019.1 1020.5 1022.5 1036.9 1032.5 1033.5 1047.5 DAY-HOUR 9- 6 4- 6 16-18 3- 6 15-18 4-18 31- 3 29-18 16- 6 15- 6 13-18 12- 6 MIN. QNH PRESSURE IN HPA 1010.4 1000.0 1007.8 1003.0 997.6 999.8 1001.0 1005.5 998.6 1005.9 1005.9 1012.9 997.6 DAY-HOUR 17-12 15-15 1-12 12- 0 2-12 26-21 27-15 7-12 13-21 31-21 9-15 17-12 MEAN QFF PRESSURE IN HPA 1024.7 1020.2 1023.3 1015.6 1016.0 1010.2 1010.4 1012.7 1013.2 1020.2 1020.2 1023.7 1017.5 MAX. QFF PRESSURE IN HPA 1035.7 1033.7 1047.6 1028.7 1028.5 1019.5 1019.5 1020.9 1022.9 1037.2 1032.7 1033.7 1047.6 DAY-HOUR 9- 6 8- 6 16-18 3- 6 15-18 4-18 31- 3 29-18 16- 6 15- 6 13-18 12- 6 MIN. QFF PRESSURE IN HPA 1010.7 1000.2 1008.2 1003.2 997.9 1000.1 1001.4 1005.9 998.9 1006.3 1006.3 1013.2 997.9 DAY-HOUR 17-12 15-15 1-12 12- 0 2-12 26-21 27-15 7-12 13-21 31-21 9-15 17-12 PRESSURE AT HOUR 0000 UTC. MEAN QFE PRESSURE IN HPA 1026.7 1022.2 1024.7 1017.0 1017.8 1012.1 1012.2 1014.7 1015.0 1021.9 1021.9 1025.8 1019.3 MAX. QFE PRESSURE IN HPA 1037.6 1035.5 1047.7 1028.0 1029.1 1019.3 1020.0 1021.5 1024.0 1037.9 1033.7 1035.0 1047.7 DAY 9 8 17 3 16 5 31 29 16 15 14 12 MIN. QFE PRESSURE IN HPA 1015.6 1003.2 1010.7 1005.4 1007.2 1004.0 1006.2 1008.4 1001.5 1012.7 1009.0 1015.8 1001.5 DAY 4 16 1 12 12 27 27 7 14 23 1 2 MEAN QNH PRESSURE IN HPA 1024.2 1019.7 1022.2 1014.5 1015.4 1009.6 1009.7 1012.2 1012.6 1019.4 1019.4 1023.3 1016.9 MAX. QNH PRESSURE IN HPA 1035.1 1033.0 1045.2 1025.5 1026.6 1016.8 1017.5 1019.0 1021.5 1035.4 1031.2 1032.5 1045.2 DAY 9 8 17 3 16 5 31 29 16 15 14 12 MIN. QNH PRESSURE IN HPA 1013.1 1000.8 1008.2 1003.0 1004.7 1001.6 1003.8 1005.9 999.1 1010.2 1006.5 1013.3 999.1 DAY 4 16 1 12 12 27 27 7 14 23 1 2 MEAN QFF PRESSURE IN HPA 1024.4 1019.9 1022.5 1014.8 1015.7 1010.0 1010.1 1012.6 1012.9 1019.8 1019.7 1023.5 1017.2 MAX. QFF PRESSURE IN HPA 1035.3 1033.2 1045.3 1025.7 1026.9 1017.2 1017.9 1019.4 1021.9 1035.7 1031.5 1032.7 1045.3 DAY 9 8 17 3 16 5 31 29 16 15 14 12 MIN. QFF PRESSURE IN HPA 1013.4 1001.0 1008.6 1003.2 1005.1 1001.9 1004.2 1006.3 999.4 1010.6 1006.9 1013.6 999.4 DAY 4 16 1 12 12 27 27 7 14 23 1 2 PRESSURE AT HOUR 0300 UTC. MEAN QFE PRESSURE IN HPA 1026.8 1022.4 1025.4 1017.6 1018.6 1012.9 1012.8 1015.2 1015.7 1022.7 1022.3 1025.9 1019.8 MAX. QFE PRESSURE IN HPA 1036.8 1035.0 1047.9 1029.4 1029.3 1019.8 1021.6 1022.1 1024.2 1038.4 1033.0 1035.3 1047.9 DAY 9 8 17 3 16 30 31 29 16 15 14 12 MIN. QFE PRESSURE IN HPA 1015.4 1005.2 1010.7 1005.9 1006.6 1005.4 1006.4 1009.2 1003.8 1013.1 1012.0 1015.5 1003.8 DAY 23 16 1 12 12 27 27 7 14 23 1 5 MEAN QNH PRESSURE IN HPA 1024.3 1019.9 1022.9 1015.2 1016.1 1010.4 1010.4 1012.7 1013.2 1020.2 1019.9 1023.4 1017.4 MAX. QNH PRESSURE IN HPA 1034.3 1032.5 1045.4 1026.9 1026.8 1017.3 1019.1 1019.6 1021.7 1035.9 1030.5 1032.8 1045.4 DAY 9 8 17 3 16 30 31 29 16 15 14 12 MIN. QNH PRESSURE IN HPA 1012.9 1002.8 1008.2 1003.5 1004.2 1003.0 1004.0 1006.7 1001.4 1010.6 1009.5 1013.0 1001.4 DAY 23 16 1 12 12 27 27 7 14 23 1 5 MEAN QFF PRESSURE IN HPA 1024.5 1020.2 1023.1 1015.4 1016.4 1010.8 1010.7 1013.1 1013.5 1020.5 1020.2 1023.7 1017.7 MAX. QFF PRESSURE IN HPA 1034.5 1032.7 1045.5 1027.1 1027.1 1017.7 1019.5 1020.0 1022.0 1036.2 1030.7 1033.0 1045.5 DAY 9 8 17 3 16 30 31 29 16 15 14 12 MIN. QFF PRESSURE IN HPA 1013.2 1003.0 1008.6 1003.7 1004.5 1003.3 1004.4 1007.1 1001.7 1011.0 1009.9 1013.3 1001.7 DAY 23 16 1 12 12 27 27 7 14 23 1 5 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ASTARA (40709) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 38 25 N LONGITUDE 48 52 E DATA PROCESSING CENTER ELEVATION -18.0 M MEANS AND EXTREMES FOR THE YEAR 1990 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 0600 UTC. MEAN QFE PRESSURE IN HPA 1028.1 1023.6 1026.7 1018.6 1019.0 1013.4 1013.3 1015.7 1016.6 1024.1 1023.8 1026.9 1020.8 MAX. QFE PRESSURE IN HPA 1038.0 1036.0 1048.8 1031.0 1029.6 1021.0 1021.4 1022.2 1025.0 1039.4 1034.3 1036.0 1048.8 DAY 9 4 17 3 15 30 31 29 16 15 14 12 MIN. QFE PRESSURE IN HPA 1017.0 1007.0 1012.2 1007.0 1005.2 1006.2 1005.9 1009.8 1006.4 1015.4 1015.4 1017.4 1005.2 DAY 23 15 1 12 2 26 27 7 14 23 9 5 MEAN QNH PRESSURE IN HPA 1025.6 1021.1 1024.2 1016.1 1016.6 1010.9 1010.9 1013.2 1014.2 1021.6 1021.3 1024.4 1018.4 MAX. QNH PRESSURE IN HPA 1035.5 1033.5 1046.3 1028.5 1027.1 1018.5 1018.9 1019.7 1022.5 1036.9 1031.8 1033.5 1046.3 DAY 9 4 17 3 15 30 31 29 16 15 14 12 MIN. QNH PRESSURE IN HPA 1014.5 1004.5 1009.7 1004.5 1002.8 1003.8 1003.5 1007.3 1004.0 1012.9 1012.9 1014.9 1002.8 DAY 23 15 1 12 2 26 27 7 14 23 9 5 MEAN QFF PRESSURE IN HPA 1025.8 1021.3 1024.5 1016.4 1016.9 1011.3 1011.3 1013.6 1014.5 1021.9 1021.6 1024.7 1018.7 MAX. QFF PRESSURE IN HPA 1035.7 1033.7 1046.4 1028.7 1027.4 1018.9 1019.3 1020.1 1022.9 1037.2 1032.0 1033.7 1046.4 DAY 9 8 17 3 15 30 31 29 16 15 14 12 MIN. QFF PRESSURE IN HPA 1014.8 1004.8 1010.1 1004.8 1003.1 1004.1 1003.9 1007.7 1004.3 1013.3 1013.2 1015.2 1003.1 DAY 23 15 1 12 2 26 27 7 14 23 9 5 PRESSURE AT HOUR 0900 UTC. MEAN QFE PRESSURE IN HPA 1027.1 1022.7 1026.1 1018.1 1018.4 1012.6 1012.7 1015.0 1015.5 1022.8 1022.6 1025.8 1020.0 MAX. QFE PRESSURE IN HPA 1036.0 1035.0 1047.2 1029.0 1029.8 1019.8 1020.2 1022.6 1024.2 1038.6 1033.4 1034.9 1047.2 DAY 9 4 16 3 15 30 31 29 16 15 13 28 MIN. QFE PRESSURE IN HPA 1015.2 1005.1 1011.5 1006.0 1002.0 1005.0 1004.9 1009.1 1006.1 1014.2 1011.4 1016.0 1002.0 DAY 17 15 1 12 2 26 27 7 13 31 9 17 MEAN QNH PRESSURE IN HPA 1024.6 1020.3 1023.6 1015.6 1015.9 1010.2 1010.3 1012.6 1013.1 1020.3 1020.1 1023.4 1017.5 MAX. QNH PRESSURE IN HPA 1033.5 1032.5 1044.7 1026.5 1027.3 1017.3 1017.7 1020.1 1021.7 1036.1 1030.9 1032.4 1044.7 DAY 9 4 16 3 15 30 31 29 16 15 13 28 MIN. QNH PRESSURE IN HPA 1012.7 1002.7 1009.0 1003.6 999.6 1002.6 1002.5 1006.6 1003.7 1011.7 1008.9 1013.5 999.6 DAY 17 15 1 12 2 26 27 7 13 31 9 17 MEAN QFF PRESSURE IN HPA 1024.8 1020.5 1023.8 1015.9 1016.2 1010.5 1010.7 1013.0 1013.4 1020.7 1020.4 1023.6 1017.8 MAX. QFF PRESSURE IN HPA 1033.7 1032.7 1044.9 1026.8 1027.6 1017.7 1018.1 1020.5 1022.1 1036.4 1031.2 1032.6 1044.9 DAY 9 8 16 3 15 30 31 29 16 15 13 28 MIN. QFF PRESSURE IN HPA 1013.0 1002.9 1009.4 1003.9 999.9 1002.9 1002.9 1007.0 1004.0 1012.1 1009.3 1013.8 999.9 DAY 17 15 1 12 2 26 27 7 13 31 9 17 PRESSURE AT HOUR 1200 UTC. MEAN QFE PRESSURE IN HPA 1026.1 1021.8 1024.9 1017.5 1017.5 1011.7 1011.8 1014.0 1014.4 1021.9 1021.8 1025.1 1019.1 MAX. QFE PRESSURE IN HPA 1035.0 1033.8 1047.7 1028.0 1029.7 1020.0 1019.6 1021.8 1023.6 1037.6 1034.0 1034.5 1047.7 DAY 6 7 16 3 15 4 31 29 16 15 13 28 MIN. QFE PRESSURE IN HPA 1012.9 1003.5 1010.3 1007.0 1000.0 1003.6 1003.6 1008.0 1004.1 1012.0 1008.8 1015.4 1000.0 DAY 17 15 1 12 2 26 27 7 13 31 9 17 MEAN QNH PRESSURE IN HPA 1023.6 1019.4 1022.4 1015.0 1015.0 1009.2 1009.3 1011.5 1012.0 1019.4 1019.4 1022.7 1016.6 MAX. QNH PRESSURE IN HPA 1032.5 1031.3 1045.2 1025.5 1027.2 1017.5 1017.1 1019.3 1021.1 1035.1 1031.5 1032.0 1045.2 DAY 6 7 16 3 15 4 31 29 16 15 13 28 MIN. QNH PRESSURE IN HPA 1010.4 1001.1 1007.8 1004.5 997.6 1001.2 1001.2 1005.5 1001.7 1009.5 1006.3 1012.9 997.6 DAY 17 15 1 12 2 26 27 7 13 31 9 17 MEAN QFF PRESSURE IN HPA 1023.8 1019.6 1022.7 1015.3 1015.4 1009.6 1009.7 1011.9 1012.3 1019.7 1019.6 1022.9 1016.9 MAX. QFF PRESSURE IN HPA 1032.7 1031.5 1045.3 1025.7 1027.5 1017.9 1017.5 1019.7 1021.5 1035.4 1031.8 1032.2 1045.3 DAY 6 7 16 3 15 4 31 29 16 15 13 28 MIN. QFF PRESSURE IN HPA 1010.7 1001.3 1008.2 1004.9 997.9 1001.5 1001.6 1005.9 1002.0 1009.9 1006.7 1013.2 997.9 DAY 17 15 1 12 2 26 27 7 13 31 9 17 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ASTARA (40709) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 38 25 N LONGITUDE 48 52 E DATA PROCESSING CENTER ELEVATION -18.0 M MEANS AND EXTREMES FOR THE YEAR 1990 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 1500 UTC. MEAN QFE PRESSURE IN HPA 1026.9 1022.3 1025.3 1017.5 1017.5 1011.3 1011.5 1013.8 1014.4 1022.0 1022.3 1025.9 1019.2 MAX. QFE PRESSURE IN HPA 1036.2 1034.6 1048.6 1027.4 1030.1 1020.5 1019.2 1022.0 1023.6 1037.1 1034.8 1035.1 1048.6 DAY 6 7 16 2 15 4 31 29 16 15 13 28 MIN. QFE PRESSURE IN HPA 1013.1 1002.4 1012.0 1005.4 1004.1 1002.6 1003.4 1008.0 1003.0 1010.8 1008.4 1016.1 1002.4 DAY 17 15 1 12 2 26 27 7 13 31 9 17 MEAN QNH PRESSURE IN HPA 1024.4 1019.8 1022.8 1015.1 1015.0 1008.9 1009.1 1011.4 1012.0 1019.5 1019.9 1023.4 1016.8 MAX. QNH PRESSURE IN HPA 1033.7 1032.1 1046.1 1024.9 1027.6 1018.0 1016.7 1019.5 1021.1 1034.6 1032.3 1032.6 1046.1 DAY 6 7 16 2 15 4 31 29 16 15 13 28 MIN. QNH PRESSURE IN HPA 1010.6 1000.0 1009.5 1003.0 1001.7 1000.2 1001.0 1005.5 1000.6 1008.3 1005.9 1013.6 1000.0 DAY 17 15 1 12 2 26 27 7 13 31 9 17 MEAN QFF PRESSURE IN HPA 1024.6 1020.0 1023.0 1015.3 1015.4 1009.2 1009.4 1011.7 1012.3 1019.8 1020.2 1023.6 1017.1 MAX. QFF PRESSURE IN HPA 1033.9 1032.3 1046.2 1025.1 1027.9 1018.4 1017.1 1019.9 1021.5 1034.9 1032.5 1032.8 1046.2 DAY 6 7 16 2 15 4 31 29 16 15 13 28 MIN. QFF PRESSURE IN HPA 1010.9 1000.2 1009.9 1003.3 1002.0 1000.5 1001.4 1005.9 1000.9 1008.7 1006.3 1013.9 1000.2 DAY 17 15 1 12 2 26 27 7 13 31 9 17 PRESSURE AT HOUR 1800 UTC. MEAN QFE PRESSURE IN HPA 1027.5 1022.6 1025.9 1018.2 1018.4 1012.2 1012.7 1015.0 1015.5 1022.2 1022.4 1026.3 1019.9 MAX. QFE PRESSURE IN HPA 1037.2 1035.0 1050.0 1028.6 1030.7 1021.6 1020.1 1023.0 1024.3 1037.1 1035.0 1035.1 1050.0 DAY 8 7 16 2 15 4 31 29 15 15 13 28 MIN. QFE PRESSURE IN HPA 1014.9 1003.2 1012.2 1007.9 1005.2 1003.0 1006.2 1009.2 1002.6 1009.2 1009.4 1016.8 1002.6 DAY 17 15 1 12 2 26 27 6 13 31 9 2 MEAN QNH PRESSURE IN HPA 1025.0 1020.1 1023.4 1015.7 1015.9 1009.8 1010.2 1012.6 1013.1 1019.7 1019.9 1023.8 1017.4 MAX. QNH PRESSURE IN HPA 1034.7 1032.5 1047.5 1026.1 1028.2 1019.1 1017.6 1020.5 1021.8 1034.6 1032.5 1032.6 1047.5 DAY 8 7 16 2 15 4 31 29 15 15 13 28 MIN. QNH PRESSURE IN HPA 1012.4 1000.8 1009.7 1005.4 1002.8 1000.6 1003.8 1006.7 1000.2 1006.7 1006.9 1014.3 1000.2 DAY 17 15 1 12 2 26 27 6 13 31 9 2 MEAN QFF PRESSURE IN HPA 1025.2 1020.4 1023.7 1016.0 1016.2 1010.2 1010.6 1012.9 1013.4 1020.0 1020.2 1024.0 1017.7 MAX. QFF PRESSURE IN HPA 1034.9 1032.7 1047.6 1026.3 1028.5 1019.5 1018.0 1020.9 1022.2 1034.9 1032.7 1032.8 1047.6 DAY 8 7 16 2 15 4 31 29 15 15 13 28 MIN. QFF PRESSURE IN HPA 1012.7 1001.0 1010.1 1005.8 1003.1 1000.9 1004.2 1007.1 1000.5 1007.1 1007.3 1014.6 1000.5 DAY 17 15 1 12 2 26 27 6 13 31 9 2 PRESSURE AT HOUR 2100 UTC. MEAN QFE PRESSURE IN HPA 1027.1 1022.1 1025.3 1017.7 1018.0 1012.1 1012.5 1014.8 1015.3 1021.7 1022.0 1025.9 1019.5 MAX. QFE PRESSURE IN HPA 1037.2 1035.5 1050.0 1028.0 1030.1 1021.0 1019.6 1022.0 1024.2 1037.0 1034.0 1034.9 1050.0 DAY 8 7 16 2 15 4 31 29 15 14 13 11 MIN. QFE PRESSURE IN HPA 1015.3 1003.2 1013.3 1007.0 1007.8 1002.2 1007.0 1009.0 1001.0 1008.4 1011.4 1015.8 1001.0 DAY 17 15 1 11 2 26 26 6 13 31 9 4 MEAN QNH PRESSURE IN HPA 1024.6 1019.7 1022.8 1015.2 1015.5 1009.6 1010.1 1012.4 1012.8 1019.2 1019.6 1023.5 1017.1 MAX. QNH PRESSURE IN HPA 1034.7 1033.0 1047.5 1025.5 1027.6 1018.5 1017.1 1019.5 1021.7 1034.5 1031.5 1032.4 1047.5 DAY 8 7 16 2 15 4 31 29 15 14 13 11 MIN. QNH PRESSURE IN HPA 1012.8 1000.8 1010.8 1004.5 1005.3 999.8 1004.5 1006.5 998.6 1005.9 1008.9 1013.3 998.6 DAY 17 15 1 11 2 26 26 6 13 31 9 4 MEAN QFF PRESSURE IN HPA 1024.8 1019.9 1023.1 1015.5 1015.8 1010.0 1010.5 1012.7 1013.2 1019.5 1019.9 1023.7 1017.4 MAX. QFF PRESSURE IN HPA 1034.9 1033.2 1047.6 1025.7 1027.9 1018.9 1017.5 1019.9 1022.1 1034.8 1031.8 1032.6 1047.6 DAY 8 7 16 2 15 4 31 29 15 14 13 11 MIN. QFF PRESSURE IN HPA 1013.1 1001.0 1011.2 1004.8 1005.7 1000.1 1005.0 1006.9 998.9 1006.3 1009.3 1013.6 998.9 DAY 17 15 1 11 2 26 26 6 13 31 9 4 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ASTARA (40709) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 38 25 N LONGITUDE 48 52 E DATA PROCESSING CENTER ELEVATION -18.0 M MEANS AND EXTREMES FOR THE YEAR 1991 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AIR TEMPERATURE (C) 5.0 4.7 7.2 13.0 16.9 22.6 25.7 24.9 20.9 18.3 11.5 6.7 14.8 MINIMUN AIR TEMPERATURE (C) 2.5 2.4 5.2 10.5 13.8 18.2 20.9 20.9 17.7 15.4 9.6 3.9 11.7 DAYS WITH MINIMUM TEMP. >=21 0 0 0 0 0 1 17 15 3 0 0 0 36 DAYS WITH MINIMUM TEMP. <=-4 0 0 0 0 0 0 0 0 0 0 0 0 0 DAYS WITH FREEZING MIN.<= 0 3 8 0 0 0 0 0 0 0 0 0 3 14 TEMPERATURE RECORDS LOWEST(C) -0.8 -2.0 0.2 7.0 10.6 14.4 17.4 17.5 13.6 11.6 3.8 0.0 -2.0 DAY 1 14 11 15 7 1 15 28 27 17 24 21 MAXIMUM AIR TEMPERATURE (C) 8.3 8.0 9.3 15.8 20.2 27.0 30.6 29.2 24.8 21.7 13.7 10.2 18.2 DAYS WITH MAXIMUM TEMP. >=30 0 0 0 0 0 5 18 12 0 0 0 0 35 DAYS WITH MAXIMUM TEMP. <= 0 0 0 0 0 0 0 0 0 0 0 0 0 0 TEMPERATURE RECORDS HIGHEST(C) 11.8 21.2 14.2 22.2 23.0 34.4 35.4 32.0 27.6 24.4 18.0 19.6 35.4 DAY 4 17 29 26 28 29 3 2 7 3 12 10 DIF. BETWEEN (MAX.-MIN.) (C) 5.8 5.6 4.1 5.3 6.4 8.8 9.7 8.3 7.1 6.3 4.1 6.3 6.5 MEAN DAILY TEMP. (MDT) (C) 5.4 5.2 7.3 13.2 17.0 22.6 25.7 25.0 21.3 18.5 11.6 7.1 15.0 COOLING DEG. DAYS(BASE 21 0C) 0.0 0.0 0.0 0.0 0.0 60.9 146.2 125.7 24.6 0.9 0.0 0.0 358.4 HEATING DEG. DAYS(BASE 18 0C) 390.4 358.9 332.8 145.6 37.3 0.0 0.0 0.0 0.0 12.4 191.3 339.2 1807.9 DEWPOINT (MEAN C) 2.7 2.6 5.9 10.9 14.2 18.3 21.0 20.4 17.9 16.4 10.2 4.3 12.1 MIXING RATIO (G/KG) 4.57 4.62 5.76 8.16 10.16 13.31 15.83 15.20 12.88 11.62 7.68 5.19 9.58 VAPOUR PRESSURE (HPA) 7.48 7.55 9.38 13.18 16.31 21.24 25.03 24.14 20.65 18.72 12.50 8.45 15.39 SATURATION DEF. (HPA) 1.34 1.28 0.88 2.03 3.11 6.88 8.83 7.83 4.44 2.53 1.17 1.56 3.49 RELATIVE HUMIDITY (MEAN %) 86 87 92 88 85 78 77 78 84 89 92 86 85 RELATIVE HUMIDITY (MAX. %) 96 97 98 97 96 94 93 93 96 98 98 96 96 RELATIVE HUMIDITY (MIN. %) 72 74 84 77 71 62 59 61 67 76 83 70 71 RELATIVE HUMIDITY (MEAN% 03UTC) 87 89 94 95 91 86 86 87 93 95 95 91 91 RELATIVE HUMIDITY (MEAN% 09UTC) 77 81 87 82 76 65 63 64 72 78 86 75 76 RELATIVE HUMIDITY (MEAN% 15UTC) 90 89 92 85 83 73 71 74 83 92 94 88 85 RH=0 => RELATIVE HUMIDITY < 0.5% AMOUNT OF PRECIPITATION MM. 42.1 41.9 192.9 44.8 64.2 14.4 59.0 60.6 177.8 204.8 164.5 93.7 1160.7 DAYS WITH PRECIPITATION >=10 2 1 7 1 3 0 3 3 6 7 5 5 43 DAYS WITH PRECIPITATION >= 5 3 2 12 3 6 1 3 3 7 8 10 8 66 DAYS WITH PRECIPITATION >= 1 8 8 17 8 10 5 4 4 8 13 13 10 108 DAYS WITH PRECIPITATION 13 18 21 18 19 9 6 6 8 15 20 13 166 GREATEST DAILY PRECIPITATION 13.0 17.7 65.0 14.2 15.0 6.0 23.0 28.0 43.0 44.0 55.4 16.5 65.0 DAY 15 21 9 12 14 12 8 26 24 10 26 2 DAY WITH THUNDER STORM 0 0 1 8 7 6 1 0 0 3 0 1 27 DAYS WITH SNOW OR SLEET 0 9 2 0 0 0 0 0 0 0 0 0 11 DAYS WITH DUST 0 0 0 0 0 0 0 0 0 0 0 1 1 WIND DIRECTION (PREVAILING) 360 360 135 135 135 135 135 90 135 315 360 360 360 PREVAILING WIND SPEED(KNOTS) 6.0 6.4 5.8 5.3 6.7 6.3 6.2 5.5 4.8 4.8 5.3 4.7 5.5 PREVAILING WIND PERCENT 21.0 17.4 13.3 17.5 20.6 18.8 9.3 8.5 6.3 6.9 19.2 15.3 9.4 CALMS PERCENT OF WIND 61.3 56.7 58.9 54.6 54.4 53.3 64.5 63.7 72.1 75.4 66.3 65.3 62.3 NO. OF WIND OBSERVATION 248 224 248 240 248 240 248 248 240 248 240 248 2920 VECTOR WIND DIRECTION (MEAN) 354 340 16 156 148 133 93 73 84 348 345 337 62 VECTOR WIND MAGNITUDE(KNOTS) 1.4 1.3 0.5 1.5 2.1 1.6 0.8 0.9 0.5 0.4 1.6 1.0 0.3 WIND STEADINESES (MEAN %) 60.9 44.8 19.2 60.0 70.0 66.7 42.1 42.9 33.3 30.8 88.9 55.6 13.6 WIND SPEED (MEAN KNOTS) 2.3 2.9 2.6 2.5 3.0 2.4 1.9 2.1 1.5 1.3 1.8 1.8 2.2 FASTEST WIND DIRECTION 360 230 330 160 160 130 100 30 40 340 340 280 160 FASTEST WIND SPEED (KNOTS) 14 21 16 12 23 14 14 16 14 14 23 23 23 DAY 16 17 9 5 27 8 8 6 9 31 1 9 DAYS WITH SKY CLEAR (0-2)/8 9 3 1 3 11 14 22 21 12 7 3 6 112 DAYS WITH P.CLOUDY (3-6)/8 6 9 6 12 12 14 5 5 8 8 5 7 97 DAYS WITH CLOUDY (7-8)/8 16 16 24 15 8 2 4 5 10 16 22 18 156 DAYS WITH VISIBILITY =< 2 KM 3 9 9 13 3 1 2 3 5 5 14 8 75 DURATION OF SUNSHINE HOURS 86.3 71.5 49.0 117.1 187.9 263.5 291.5 260.9 157.1 105.7 43.5 79.7 1713.7 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ASTARA (40709) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 38 25 N LONGITUDE 48 52 E DATA PROCESSING CENTER ELEVATION -18.0 M MEANS AND EXTREMES FOR THE YEAR 1991 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL MEAN QFE PRESSURE IN HPA 1024.6 1026.1 1023.3 1018.3 1014.9 1013.9 1009.7 1012.5 1018.8 1021.5 1026.2 1021.1 1019.2 MAX. QFE PRESSURE IN HPA 1034.5 1038.3 1032.1 1030.6 1027.0 1023.2 1020.5 1020.0 1028.2 1030.0 1034.5 1034.6 1038.3 DAY-HOUR 20- 6 22- 6 4- 6 28-18 4-18 17- 9 11- 9 27- 3 10- 6 12-18 26-18 16-18 MIN. QFE PRESSURE IN HPA 1009.7 1008.7 1012.3 1008.1 998.3 1005.0 996.3 1004.7 1007.7 1012.9 1014.9 1007.2 996.3 DAY-HOUR 3-12 17- 0 6-12 4-15 16-15 10-21 7-15 1-15 19-12 24-15 30-21 9-21 MEAN QNH PRESSURE IN HPA 1022.1 1023.6 1020.8 1015.9 1012.4 1011.5 1007.3 1010.0 1016.3 1019.0 1023.7 1018.6 1016.8 MAX. QNH PRESSURE IN HPA 1032.0 1035.8 1029.6 1028.1 1024.5 1020.7 1018.0 1017.5 1025.7 1027.5 1032.0 1032.1 1035.8 DAY-HOUR 20- 6 22- 6 4- 6 28-18 4-18 17- 9 11- 9 27- 3 10- 6 12-18 26-18 16-18 MIN. QNH PRESSURE IN HPA 1007.2 1006.2 1009.8 1005.6 995.9 1002.6 993.9 1002.3 1005.2 1010.4 1012.4 1004.7 993.9 DAY-HOUR 3-12 17- 0 6-12 4-15 16-15 10-21 7-15 1-15 19-12 24-15 30-21 9-21 MEAN QFF PRESSURE IN HPA 1022.3 1023.8 1021.1 1016.2 1012.7 1011.8 1007.7 1010.4 1016.6 1019.4 1024.0 1018.9 1017.1 MAX. QFF PRESSURE IN HPA 1032.2 1036.0 1029.8 1028.4 1024.8 1021.1 1018.4 1017.9 1026.0 1027.8 1032.3 1032.3 1036.0 DAY-HOUR 20- 6 22- 6 4- 6 28-18 4-18 17- 9 11- 9 27- 6 10- 6 12-18 26-18 16-18 MIN. QFF PRESSURE IN HPA 1007.5 1006.6 1010.1 1005.9 996.2 1002.9 994.3 1002.7 1005.6 1010.8 1012.7 1005.1 994.3 DAY-HOUR 3-12 17- 0 6-12 4-15 16-15 10-21 7-15 1-15 19-12 24-15 30-21 9-21 PRESSURE AT HOUR 0000 UTC. MEAN QFE PRESSURE IN HPA 1024.8 1025.7 1022.7 1018.0 1014.5 1013.7 1009.7 1012.3 1018.4 1021.1 1026.1 1021.0 1019.0 MAX. QFE PRESSURE IN HPA 1033.5 1037.2 1030.9 1027.0 1024.6 1022.2 1018.0 1019.4 1026.8 1029.0 1033.6 1033.1 1037.2 DAY 20 22 4 29 5 17 11 27 11 13 27 17 MIN. QFE PRESSURE IN HPA 1013.4 1008.7 1013.5 1009.3 1003.0 1005.7 1000.2 1006.9 1008.5 1013.0 1017.8 1010.4 1000.2 DAY 31 17 7 5 17 11 7 2 21 25 5 28 MEAN QNH PRESSURE IN HPA 1022.3 1023.2 1020.2 1015.5 1012.0 1011.3 1007.2 1009.9 1015.9 1018.7 1023.6 1018.5 1016.5 MAX. QNH PRESSURE IN HPA 1031.0 1034.7 1028.4 1024.5 1022.1 1019.7 1015.5 1016.9 1024.3 1026.5 1031.1 1030.6 1034.7 DAY 20 22 4 29 5 17 11 27 11 13 27 17 MIN. QNH PRESSURE IN HPA 1010.9 1006.2 1011.0 1006.8 1000.6 1003.3 997.8 1004.4 1006.0 1010.5 1015.3 1007.9 997.8 DAY 31 17 7 5 17 11 7 2 21 25 5 28 MEAN QFF PRESSURE IN HPA 1022.6 1023.4 1020.5 1015.8 1012.3 1011.6 1007.6 1010.3 1016.3 1019.0 1023.9 1018.8 1016.8 MAX. QFF PRESSURE IN HPA 1031.2 1034.9 1028.6 1024.8 1022.4 1020.1 1015.9 1017.3 1024.6 1026.8 1031.4 1030.8 1034.9 DAY 20 22 4 29 5 17 11 27 11 13 27 17 MIN. QFF PRESSURE IN HPA 1011.2 1006.6 1011.3 1007.1 1000.9 1003.6 998.2 1004.9 1006.4 1010.9 1015.6 1008.2 998.2 DAY 31 17 7 5 17 11 7 2 21 25 5 28 PRESSURE AT HOUR 0300 UTC. MEAN QFE PRESSURE IN HPA 1025.0 1026.0 1023.2 1018.5 1015.1 1014.4 1010.3 1013.1 1018.9 1021.6 1026.2 1020.9 1019.5 MAX. QFE PRESSURE IN HPA 1033.5 1037.8 1031.3 1027.4 1025.1 1022.6 1018.8 1020.0 1026.8 1029.0 1033.7 1031.6 1037.8 DAY 20 22 4 28 5 17 11 27 11 13 27 17 MIN. QFE PRESSURE IN HPA 1012.5 1009.7 1013.8 1009.4 1004.5 1006.8 1000.0 1008.2 1009.1 1013.8 1019.0 1010.4 1000.0 DAY 31 17 7 4 17 11 7 1 21 26 5 28 MEAN QNH PRESSURE IN HPA 1022.6 1023.6 1020.8 1016.0 1012.7 1012.0 1007.9 1010.6 1016.5 1019.1 1023.7 1018.4 1017.0 MAX. QNH PRESSURE IN HPA 1031.0 1035.3 1028.8 1024.9 1022.6 1020.1 1016.3 1017.5 1024.3 1026.5 1031.2 1029.1 1035.3 DAY 20 22 4 28 5 17 11 27 11 13 27 17 MIN. QNH PRESSURE IN HPA 1010.0 1007.2 1011.3 1006.9 1002.1 1004.4 997.6 1005.7 1006.6 1011.3 1016.5 1007.9 997.6 DAY 31 17 7 4 17 11 7 1 21 26 5 28 MEAN QFF PRESSURE IN HPA 1022.8 1023.8 1021.0 1016.3 1013.0 1012.3 1008.3 1011.0 1016.8 1019.5 1024.0 1018.7 1017.3 MAX. QFF PRESSURE IN HPA 1031.2 1035.5 1029.0 1025.2 1022.9 1020.5 1016.7 1017.9 1024.6 1026.8 1031.5 1029.3 1035.5 DAY 20 22 4 28 5 17 11 27 11 13 27 17 MIN. QFF PRESSURE IN HPA 1010.3 1007.5 1011.6 1007.2 1002.4 1004.7 998.0 1006.1 1007.0 1011.7 1016.8 1008.2 998.0 DAY 31 17 7 4 17 11 7 1 21 26 5 28 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ASTARA (40709) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 38 25 N LONGITUDE 48 52 E DATA PROCESSING CENTER ELEVATION -18.0 M MEANS AND EXTREMES FOR THE YEAR 1991 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 0600 UTC. MEAN QFE PRESSURE IN HPA 1026.0 1026.9 1024.1 1019.1 1015.7 1014.8 1010.5 1013.2 1019.8 1022.6 1026.9 1021.9 1020.1 MAX. QFE PRESSURE IN HPA 1034.5 1038.3 1032.1 1029.6 1025.1 1022.9 1020.2 1020.0 1028.2 1029.7 1033.9 1032.6 1038.3 DAY 20 22 4 28 4 17 11 27 10 13 27 17 MIN. QFE PRESSURE IN HPA 1012.4 1011.0 1014.3 1009.5 1005.7 1006.2 999.5 1007.8 1009.9 1014.7 1018.8 1012.3 999.5 DAY 31 17 6 4 22 11 7 1 19 26 4 1 MEAN QNH PRESSURE IN HPA 1023.5 1024.4 1021.7 1016.7 1013.2 1012.3 1008.0 1010.8 1017.3 1020.1 1024.4 1019.4 1017.6 MAX. QNH PRESSURE IN HPA 1032.0 1035.8 1029.6 1027.1 1022.6 1020.4 1017.7 1017.5 1025.7 1027.2 1031.4 1030.1 1035.8 DAY 20 22 4 28 4 17 11 27 10 13 27 17 MIN. QNH PRESSURE IN HPA 1009.9 1008.5 1011.8 1007.0 1003.3 1003.8 997.1 1005.3 1007.4 1012.2 1016.3 1009.8 997.1 DAY 31 17 6 4 22 11 7 1 19 26 4 1 MEAN QFF PRESSURE IN HPA 1023.7 1024.7 1021.9 1017.0 1013.5 1012.7 1008.4 1011.2 1017.7 1020.4 1024.7 1019.7 1018.0 MAX. QFF PRESSURE IN HPA 1032.2 1036.0 1029.8 1027.4 1022.9 1020.8 1018.1 1017.9 1026.0 1027.5 1031.7 1030.3 1036.0 DAY 20 22 4 28 4 17 11 27 10 13 27 17 MIN. QFF PRESSURE IN HPA 1010.2 1008.8 1012.1 1007.3 1003.6 1004.1 997.5 1005.8 1007.8 1012.6 1016.6 1010.1 997.5 DAY 31 17 6 4 22 11 7 1 19 26 4 1 PRESSURE AT HOUR 0900 UTC. MEAN QFE PRESSURE IN HPA 1024.8 1026.3 1023.8 1018.7 1015.4 1014.5 1010.1 1012.7 1019.2 1022.0 1026.1 1021.1 1019.5 MAX. QFE PRESSURE IN HPA 1033.0 1036.8 1031.3 1030.2 1025.4 1023.2 1020.5 1019.7 1028.0 1029.1 1032.5 1030.7 1036.8 DAY 20 22 4 28 4 17 11 27 10 12 15 17 MIN. QFE PRESSURE IN HPA 1010.7 1012.3 1013.3 1009.1 1005.9 1005.5 998.3 1007.2 1008.7 1014.0 1017.1 1010.3 998.3 DAY 3 17 6 4 16 11 7 1 19 25 4 9 MEAN QNH PRESSURE IN HPA 1022.4 1023.8 1021.3 1016.2 1012.9 1012.0 1007.6 1010.2 1016.7 1019.5 1023.6 1018.6 1017.1 MAX. QNH PRESSURE IN HPA 1030.5 1034.3 1028.8 1027.7 1022.9 1020.7 1018.0 1017.2 1025.5 1026.6 1030.0 1028.2 1034.3 DAY 20 22 4 28 4 17 11 27 10 12 15 17 MIN. QNH PRESSURE IN HPA 1008.2 1009.8 1010.8 1006.6 1003.5 1003.1 995.9 1004.7 1006.2 1011.5 1014.6 1007.8 995.9 DAY 3 17 6 4 16 11 7 1 19 25 4 9 MEAN QFF PRESSURE IN HPA 1022.6 1024.1 1021.6 1016.5 1013.2 1012.4 1008.0 1010.6 1017.1 1019.8 1023.9 1018.9 1017.4 MAX. QFF PRESSURE IN HPA 1030.7 1034.5 1029.0 1028.0 1023.2 1021.1 1018.4 1017.6 1025.8 1026.9 1030.3 1028.4 1034.5 DAY 20 22 20 28 4 17 11 27 10 12 15 17 MIN. QFF PRESSURE IN HPA 1008.5 1010.1 1011.1 1006.9 1003.8 1003.4 996.3 1005.2 1006.6 1011.9 1014.9 1008.1 996.3 DAY 3 17 6 4 16 11 7 1 19 25 4 9 PRESSURE AT HOUR 1200 UTC. MEAN QFE PRESSURE IN HPA 1023.8 1025.4 1022.9 1017.8 1014.6 1013.6 1009.2 1011.7 1018.1 1021.0 1025.5 1020.5 1018.7 MAX. QFE PRESSURE IN HPA 1032.5 1035.4 1030.4 1029.6 1025.6 1022.2 1019.3 1018.4 1027.2 1028.4 1031.7 1031.5 1035.4 DAY 10 11 4 28 4 17 11 27 26 12 26 16 MIN. QFE PRESSURE IN HPA 1009.7 1012.1 1012.3 1008.3 1002.9 1005.2 996.8 1006.0 1007.7 1013.2 1016.5 1008.9 996.8 DAY 3 17 6 4 16 11 7 1 19 25 4 31 MEAN QNH PRESSURE IN HPA 1021.3 1022.9 1020.5 1015.3 1012.1 1011.1 1006.8 1009.3 1015.6 1018.6 1023.0 1018.0 1016.2 MAX. QNH PRESSURE IN HPA 1030.0 1032.9 1027.9 1027.1 1023.1 1019.7 1016.8 1015.9 1024.7 1025.9 1029.2 1029.0 1032.9 DAY 10 11 4 28 4 17 11 27 26 12 26 16 MIN. QNH PRESSURE IN HPA 1007.2 1009.6 1009.8 1005.8 1000.5 1002.8 994.4 1003.6 1005.2 1010.7 1014.0 1006.4 994.4 DAY 3 17 6 4 16 11 7 1 19 25 4 31 MEAN QFF PRESSURE IN HPA 1021.5 1023.1 1020.7 1015.6 1012.4 1011.5 1007.2 1009.6 1016.0 1018.9 1023.3 1018.3 1016.5 MAX. QFF PRESSURE IN HPA 1030.2 1033.1 1028.1 1027.4 1023.4 1020.1 1017.2 1016.3 1025.0 1026.2 1029.5 1029.2 1033.1 DAY 10 11 20 28 4 17 11 27 26 12 26 16 MIN. QFF PRESSURE IN HPA 1007.5 1010.0 1010.1 1006.1 1000.8 1003.1 994.8 1004.0 1005.6 1011.1 1014.3 1006.7 994.8 DAY 3 17 6 4 16 11 7 1 19 25 4 31 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ASTARA (40709) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 38 25 N LONGITUDE 48 52 E DATA PROCESSING CENTER ELEVATION -18.0 M MEANS AND EXTREMES FOR THE YEAR 1991 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 1500 UTC. MEAN QFE PRESSURE IN HPA 1024.2 1025.9 1023.1 1017.9 1014.2 1013.2 1008.8 1011.5 1018.0 1021.2 1026.1 1021.2 1018.8 MAX. QFE PRESSURE IN HPA 1033.5 1035.5 1031.1 1030.0 1026.2 1021.9 1019.1 1018.5 1027.0 1029.1 1033.4 1033.7 1035.5 DAY 28 11 10 28 4 17 11 26 26 12 26 16 MIN. QFE PRESSURE IN HPA 1010.4 1013.4 1012.9 1008.1 998.3 1005.4 996.3 1004.7 1008.4 1012.9 1016.8 1008.8 996.3 DAY 3 16 6 4 16 10 7 1 19 24 4 31 MEAN QNH PRESSURE IN HPA 1021.7 1023.4 1020.6 1015.4 1011.7 1010.8 1006.3 1009.1 1015.5 1018.7 1023.6 1018.8 1016.3 MAX. QNH PRESSURE IN HPA 1031.0 1033.0 1028.6 1027.5 1023.7 1019.4 1016.6 1016.0 1024.5 1026.6 1030.9 1031.2 1033.0 DAY 28 11 10 28 4 17 11 26 26 12 26 16 MIN. QNH PRESSURE IN HPA 1007.9 1010.9 1010.4 1005.6 995.9 1003.0 993.9 1002.3 1005.9 1010.4 1014.3 1006.3 993.9 DAY 3 16 6 4 16 10 7 1 19 24 4 31 MEAN QFF PRESSURE IN HPA 1022.0 1023.6 1020.9 1015.7 1012.0 1011.1 1006.7 1009.4 1015.9 1019.0 1023.9 1019.0 1016.6 MAX. QFF PRESSURE IN HPA 1031.2 1033.2 1028.8 1027.8 1024.0 1019.8 1017.0 1016.4 1024.8 1026.9 1031.2 1031.4 1033.2 DAY 28 11 10 28 4 17 11 26 26 12 26 16 MIN. QFF PRESSURE IN HPA 1008.2 1011.2 1010.7 1005.9 996.2 1003.3 994.3 1002.7 1006.3 1010.8 1014.6 1006.6 994.3 DAY 3 16 6 4 16 10 7 1 19 24 4 31 PRESSURE AT HOUR 1800 UTC. MEAN QFE PRESSURE IN HPA 1024.3 1026.3 1023.6 1018.6 1015.0 1014.0 1009.7 1012.7 1019.0 1021.6 1026.5 1021.4 1019.4 MAX. QFE PRESSURE IN HPA 1034.1 1036.5 1031.8 1030.6 1027.0 1022.2 1019.4 1019.7 1028.0 1030.0 1034.5 1034.6 1036.5 DAY 28 21 10 28 4 17 11 26 10 12 26 16 MIN. QFE PRESSURE IN HPA 1011.3 1011.6 1013.6 1009.0 1001.1 1005.1 998.2 1005.3 1009.1 1012.9 1016.2 1008.5 998.2 DAY 31 16 6 4 16 10 7 1 20 24 30 9 MEAN QNH PRESSURE IN HPA 1021.8 1023.8 1021.1 1016.1 1012.5 1011.5 1007.2 1010.2 1016.6 1019.1 1024.0 1018.9 1016.9 MAX. QNH PRESSURE IN HPA 1031.6 1034.0 1029.3 1028.1 1024.5 1019.7 1016.9 1017.2 1025.5 1027.5 1032.0 1032.1 1034.0 DAY 28 21 10 28 4 17 11 26 10 12 26 16 MIN. QNH PRESSURE IN HPA 1008.8 1009.1 1011.1 1006.5 998.7 1002.7 995.8 1002.9 1006.6 1010.4 1013.7 1006.0 995.8 DAY 31 16 6 4 16 10 7 1 20 24 30 9 MEAN QFF PRESSURE IN HPA 1022.0 1024.0 1021.4 1016.4 1012.8 1011.9 1007.6 1010.6 1016.9 1019.4 1024.3 1019.1 1017.2 MAX. QFF PRESSURE IN HPA 1031.8 1034.2 1029.5 1028.4 1024.8 1020.1 1017.3 1017.6 1025.9 1027.8 1032.3 1032.3 1034.2 DAY 28 21 10 28 4 17 11 26 15 12 26 16 MIN. QFF PRESSURE IN HPA 1009.1 1009.4 1011.4 1006.8 999.0 1003.0 996.2 1003.3 1007.0 1010.8 1014.0 1006.3 996.2 DAY 31 16 6 4 16 10 7 1 20 24 30 9 PRESSURE AT HOUR 2100 UTC. MEAN QFE PRESSURE IN HPA 1024.0 1026.1 1023.2 1018.3 1014.8 1013.5 1009.7 1012.7 1018.8 1021.2 1026.1 1021.0 1019.1 MAX. QFE PRESSURE IN HPA 1033.5 1037.1 1031.6 1029.0 1026.4 1022.0 1018.6 1019.6 1027.5 1029.2 1034.1 1033.9 1037.1 DAY 19 21 10 28 4 16 11 26 10 12 26 16 MIN. QFE PRESSURE IN HPA 1011.8 1009.4 1013.5 1009.2 1001.5 1005.0 1000.5 1005.9 1008.9 1012.9 1014.9 1007.2 1000.5 DAY 31 16 6 16 16 10 6 1 20 24 30 9 MEAN QNH PRESSURE IN HPA 1021.6 1023.6 1020.7 1015.9 1012.3 1011.1 1007.3 1010.2 1016.3 1018.7 1023.6 1018.6 1016.6 MAX. QNH PRESSURE IN HPA 1031.0 1034.6 1029.1 1026.5 1023.9 1019.5 1016.1 1017.1 1025.0 1026.7 1031.6 1031.4 1034.6 DAY 19 21 10 28 4 16 11 26 10 12 26 16 MIN. QNH PRESSURE IN HPA 1009.3 1006.9 1011.0 1006.7 999.1 1002.6 998.1 1003.5 1006.4 1010.4 1012.4 1004.7 998.1 DAY 31 16 6 16 16 10 6 1 20 24 30 9 MEAN QFF PRESSURE IN HPA 1021.8 1023.8 1020.9 1016.2 1012.6 1011.4 1007.7 1010.6 1016.7 1019.1 1023.9 1018.8 1017.0 MAX. QFF PRESSURE IN HPA 1031.2 1034.8 1029.3 1026.8 1024.2 1019.9 1016.5 1017.5 1025.3 1027.0 1031.9 1031.6 1034.8 DAY 19 21 10 28 4 16 11 26 10 12 26 16 MIN. QFF PRESSURE IN HPA 1009.6 1007.2 1011.3 1007.0 999.4 1002.9 998.5 1003.9 1006.8 1010.8 1012.7 1005.1 998.5 DAY 31 16 6 16 16 10 6 1 20 24 30 9 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ASTARA (40709) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 38 25 N LONGITUDE 48 52 E DATA PROCESSING CENTER ELEVATION -18.0 M MEANS AND EXTREMES FOR THE YEAR 1992 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AIR TEMPERATURE (C) 4.1 4.9 7.0 11.4 15.4 21.8 23.9 22.7 20.3 16.0 11.6 7.1 13.9 MINIMUN AIR TEMPERATURE (C) 0.8 1.6 4.3 8.9 12.3 18.5 20.3 18.9 17.3 12.6 8.5 4.9 10.7 DAYS WITH MINIMUM TEMP. >=21 0 0 0 0 0 6 16 1 0 0 0 0 23 DAYS WITH MINIMUM TEMP. <=-4 1 0 0 0 0 0 0 0 0 0 0 0 1 DAYS WITH FREEZING MIN.<= 0 13 8 0 0 0 0 0 0 0 0 0 1 22 TEMPERATURE RECORDS LOWEST(C) -4.8 -1.0 0.2 4.6 5.4 13.5 14.8 16.0 13.0 8.8 1.8 -2.0 -4.8 DAY 27 4 11 3 5 6 11 19 28 16 27 31 MAXIMUM AIR TEMPERATURE (C) 8.5 9.3 9.9 14.9 18.7 25.3 28.2 27.1 23.7 20.4 15.3 9.9 17.6 DAYS WITH MAXIMUM TEMP. >=30 0 0 0 1 0 1 9 1 0 1 0 0 13 DAYS WITH MAXIMUM TEMP. <= 0 0 0 0 0 0 0 0 0 0 0 0 0 0 TEMPERATURE RECORDS HIGHEST(C) 16.3 21.0 16.2 30.2 27.0 30.2 31.2 30.2 28.0 32.6 27.4 14.0 32.6 DAY 18 19 31 13 29 19 3 25 7 24 22 14 DIF. BETWEEN (MAX.-MIN.) (C) 7.7 7.7 5.6 6.0 6.4 6.8 7.9 8.2 6.4 7.8 6.8 5.0 6.9 MEAN DAILY TEMP. (MDT) (C) 4.6 5.5 7.1 11.9 15.5 21.9 24.2 23.0 20.5 16.5 11.9 7.4 14.2 COOLING DEG. DAYS(BASE 21 0C) 0.0 0.0 0.0 0.0 1.9 53.5 108.7 62.3 18.8 1.5 0.0 0.0 246.9 HEATING DEG. DAYS(BASE 18 0C) 415.1 363.9 338.2 185.7 89.1 5.2 2.1 0.0 8.5 57.3 183.5 327.5 1976.0 DEWPOINT (MEAN C) 0.1 1.4 4.4 8.9 12.3 18.5 18.8 18.7 17.6 13.2 8.8 4.0 10.6 MIXING RATIO (G/KG) 3.82 4.22 5.23 7.09 9.11 13.65 13.73 13.58 12.69 9.50 7.13 5.15 8.74 VAPOUR PRESSURE (HPA) 6.25 6.86 8.51 11.48 14.69 21.70 21.85 21.71 20.36 15.34 11.57 8.40 14.06 SATURATION DEF. (HPA) 2.14 2.08 1.71 2.18 3.23 5.06 8.46 6.35 3.99 3.27 2.51 1.81 3.57 RELATIVE HUMIDITY (MEAN %) 77 81 85 85 83 83 75 80 85 85 85 82 82 RELATIVE HUMIDITY (MAX. %) 91 95 95 96 95 94 92 94 97 97 96 92 95 RELATIVE HUMIDITY (MIN. %) 58 63 72 71 69 67 57 63 71 70 70 69 67 RELATIVE HUMIDITY (MEAN% 03UTC) 81 86 91 92 89 90 85 90 92 92 89 86 89 RELATIVE HUMIDITY (MEAN% 09UTC) 63 69 76 78 73 72 62 67 74 73 76 73 71 RELATIVE HUMIDITY (MEAN% 15UTC) 82 83 83 84 80 80 67 72 84 88 89 85 81 RH=0 => RELATIVE HUMIDITY < 0.5% AMOUNT OF PRECIPITATION MM. 55.5 56.7 171.8 168.9 68.2 86.5 127.7 100.0 227.4 141.7 143.3 85.9 1433.6 DAYS WITH PRECIPITATION >=10 2 1 5 7 2 4 1 3 4 5 9 3 46 DAYS WITH PRECIPITATION >= 5 4 5 5 10 4 6 1 6 9 6 9 4 69 DAYS WITH PRECIPITATION >= 1 6 11 10 17 8 11 4 8 11 8 9 7 110 DAYS WITH PRECIPITATION 11 11 13 18 20 15 4 11 14 10 15 13 155 GREATEST DAILY PRECIPITATION 25.0 17.0 64.0 41.0 27.0 26.0 121.0 28.0 93.0 32.3 30.8 38.0 121.0 DAY 24 24 7 18 4 5 10 27 27 7 3 3 DAY WITH THUNDER STORM 2 0 0 1 6 11 2 4 4 0 0 0 30 DAYS WITH SNOW OR SLEET 5 3 4 0 0 0 0 0 0 0 0 0 12 DAYS WITH DUST 0 0 1 0 0 0 0 0 0 0 0 0 1 WIND DIRECTION (PREVAILING) 360 315 180 135 135 135 135 135 315 360 360 360 135 PREVAILING WIND SPEED(KNOTS) 5.5 4.0 6.0 7.2 5.2 4.7 4.9 4.7 5.3 5.1 6.9 5.7 5.5 PREVAILING WIND PERCENT 9.7 10.8 8.5 13.8 12.9 14.6 11.3 10.5 6.3 10.5 9.6 22.2 7.2 CALMS PERCENT OF WIND 71.8 61.6 70.2 60.4 69.0 67.1 70.6 75.4 75.0 64.5 62.9 54.8 67.0 NO. OF WIND OBSERVATION 248 232 248 240 248 240 248 248 240 248 240 248 2928 VECTOR WIND DIRECTION (MEAN) 335 318 146 135 139 142 125 138 53 337 312 345 31 VECTOR WIND MAGNITUDE(KNOTS) 0.7 0.4 0.3 0.9 0.8 1.0 0.5 0.5 0.1 0.6 1.0 1.9 0.1 WIND STEADINESES (MEAN %) 41.2 19.0 17.6 36.0 53.3 58.8 33.3 50.0 8.3 33.3 34.5 70.4 5.3 WIND SPEED (MEAN KNOTS) 1.7 2.1 1.7 2.5 1.5 1.7 1.5 1.0 1.2 1.8 2.9 2.7 1.9 FASTEST WIND DIRECTION 240 230 150 360 10 360 40 340 330 320 250 330 250 FASTEST WIND SPEED (KNOTS) 21 19 14 19 16 17 14 12 14 19 29 16 29 DAY 18 7 10 22 10 11 10 26 22 14 21 2 DAYS WITH SKY CLEAR (0-2)/8 13 8 5 3 9 9 14 14 10 13 7 3 108 DAYS WITH P.CLOUDY (3-6)/8 8 7 9 12 3 14 8 6 7 6 7 10 97 DAYS WITH CLOUDY (7-8)/8 10 14 17 15 19 7 9 11 13 12 16 18 161 DAYS WITH VISIBILITY =< 2 KM 4 3 8 10 2 2 2 2 7 9 13 5 67 DURATION OF SUNSHINE HOURS 131.4 101.8 116.5 116.8 147.9 204.5 232.0 182.3 127.1 145.0 90.6 64.3 1660.2 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ASTARA (40709) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 38 25 N LONGITUDE 48 52 E DATA PROCESSING CENTER ELEVATION -18.0 M MEANS AND EXTREMES FOR THE YEAR 1992 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL MEAN QFE PRESSURE IN HPA 1023.9 1019.8 1023.0 1019.0 1019.0 1012.1 1012.5 1016.8 1019.6 1020.6 1022.1 1023.6 1019.3 MAX. QFE PRESSURE IN HPA 1036.0 1032.7 1036.8 1030.7 1034.3 1023.2 1023.2 1026.0 1031.3 1034.4 1036.4 1036.8 1036.8 DAY-HOUR 27- 6 15- 9 9- 6 30-18 2- 6 6-18 11-18 30-18 29- 6 15- 6 3- 6 2-15 MIN. QFE PRESSURE IN HPA 1006.9 1007.8 1003.5 1004.9 1003.1 1003.7 1003.9 1006.9 1010.1 1005.9 1003.7 1011.3 1003.1 DAY-HOUR 30-12 7-12 30-15 12-15 10- 0 18-15 9-15 24-12 25- 9 26- 9 22-21 13-21 MEAN QNH PRESSURE IN HPA 1021.5 1017.3 1020.5 1016.5 1016.5 1009.6 1010.0 1014.3 1017.1 1018.1 1019.6 1021.2 1016.9 MAX. QNH PRESSURE IN HPA 1033.5 1030.2 1034.3 1028.2 1031.8 1020.7 1020.7 1023.5 1028.8 1031.9 1033.9 1034.3 1034.3 DAY-HOUR 27- 6 15- 9 9- 6 30-18 2- 6 6-18 11-18 30-18 29- 6 15- 6 3- 6 2-15 MIN. QNH PRESSURE IN HPA 1004.4 1005.3 1001.1 1002.5 1000.7 1001.3 1001.5 1004.4 1007.6 1003.5 1001.3 1008.8 1000.7 DAY-HOUR 30-12 7-12 30-15 12-15 10- 0 18-15 9-15 24-12 25- 9 26- 9 22-21 13-21 MEAN QFF PRESSURE IN HPA 1021.7 1017.5 1020.8 1016.8 1016.7 1010.0 1010.4 1014.7 1017.5 1018.4 1019.9 1021.4 1017.1 MAX. QFF PRESSURE IN HPA 1033.7 1030.4 1034.5 1028.5 1032.1 1021.0 1021.0 1023.9 1029.1 1032.2 1034.2 1034.5 1034.5 DAY-HOUR 27- 6 15- 9 9- 6 30-21 2- 6 6-18 11-18 30-18 29- 6 15- 6 3- 6 2-15 MIN. QFF PRESSURE IN HPA 1004.7 1005.6 1001.3 1002.7 1001.0 1001.6 1001.8 1004.8 1008.0 1003.8 1001.6 1009.1 1001.0 DAY-HOUR 30-12 7-12 30-15 12-15 10- 0 18-15 9-15 24-12 25- 9 26- 9 22-21 13-21 PRESSURE AT HOUR 0000 UTC. MEAN QFE PRESSURE IN HPA 1023.8 1019.5 1022.6 1018.3 1018.6 1012.1 1012.4 1016.3 1019.3 1020.8 1021.7 1023.5 1019.1 MAX. QFE PRESSURE IN HPA 1034.6 1029.7 1035.9 1026.2 1032.9 1021.8 1021.8 1024.4 1030.0 1033.4 1036.1 1031.2 1036.1 DAY 27 16 9 30 2 7 12 31 29 15 3 3 MIN. QFE PRESSURE IN HPA 1008.2 1008.8 1003.7 1006.4 1003.1 1004.4 1006.1 1009.7 1012.9 1009.3 1005.7 1012.0 1003.1 DAY 31 19 31 13 10 28 3 24 7 24 23 15 MEAN QNH PRESSURE IN HPA 1021.3 1017.0 1020.2 1015.8 1016.1 1009.7 1010.0 1013.8 1016.8 1018.3 1019.3 1021.1 1016.6 MAX. QNH PRESSURE IN HPA 1032.1 1027.2 1033.4 1023.7 1030.4 1019.3 1019.3 1021.9 1027.5 1030.9 1033.6 1028.7 1033.6 DAY 27 16 9 30 2 7 12 31 29 15 3 3 MIN. QNH PRESSURE IN HPA 1005.7 1006.3 1001.3 1004.0 1000.7 1002.0 1003.7 1007.2 1010.4 1006.8 1003.3 1009.5 1000.7 DAY 31 19 31 13 10 28 3 24 7 24 23 15 MEAN QFF PRESSURE IN HPA 1021.5 1017.1 1020.6 1016.1 1016.4 1010.0 1010.3 1014.2 1017.2 1018.6 1019.5 1021.3 1016.9 MAX. QFF PRESSURE IN HPA 1032.3 1027.4 1033.6 1024.0 1030.7 1019.6 1019.6 1022.3 1027.8 1031.2 1033.9 1028.9 1033.9 DAY 27 16 9 30 2 7 12 31 29 15 3 3 MIN. QFF PRESSURE IN HPA 1006.0 1006.7 1001.5 1004.3 1001.0 1002.3 1004.0 1007.6 1010.8 1007.2 1003.6 1009.8 1001.0 DAY 31 19 31 13 10 28 3 24 7 24 23 15 PRESSURE AT HOUR 0300 UTC. MEAN QFE PRESSURE IN HPA 1023.8 1019.7 1023.2 1019.0 1019.2 1012.4 1013.1 1017.0 1019.9 1021.0 1022.1 1023.6 1019.5 MAX. QFE PRESSURE IN HPA 1035.1 1030.2 1036.3 1027.5 1033.8 1021.8 1022.1 1024.8 1030.1 1033.6 1036.1 1032.8 1036.3 DAY 27 15 9 30 2 6 12 31 29 15 3 2 MIN. QFE PRESSURE IN HPA 1010.1 1008.6 1005.7 1009.3 1004.7 1005.2 1007.4 1010.0 1012.0 1009.0 1006.4 1012.0 1004.7 DAY 31 7 30 21 10 28 9 24 25 24 22 15 MEAN QNH PRESSURE IN HPA 1021.3 1017.3 1020.7 1016.5 1016.7 1010.0 1010.7 1014.5 1017.4 1018.5 1019.6 1021.1 1017.0 MAX. QNH PRESSURE IN HPA 1032.6 1027.7 1033.8 1025.0 1031.3 1019.3 1019.6 1022.3 1027.6 1031.1 1033.6 1030.3 1033.8 DAY 27 15 9 30 2 6 12 31 29 15 3 2 MIN. QNH PRESSURE IN HPA 1007.6 1006.1 1003.3 1006.8 1002.3 1002.8 1004.9 1007.5 1009.5 1006.5 1004.0 1009.5 1002.3 DAY 31 7 30 21 10 28 9 24 25 24 22 15 MEAN QFF PRESSURE IN HPA 1021.5 1017.5 1021.0 1016.8 1017.0 1010.3 1011.0 1014.9 1017.7 1018.8 1019.8 1021.4 1017.3 MAX. QFF PRESSURE IN HPA 1032.8 1027.9 1034.0 1025.3 1031.6 1019.6 1019.9 1022.7 1027.9 1031.4 1033.9 1030.6 1034.0 DAY 27 15 9 30 2 6 12 31 29 15 3 2 MIN. QFF PRESSURE IN HPA 1007.9 1006.4 1003.5 1007.1 1002.6 1003.1 1005.3 1007.9 1009.9 1006.9 1004.3 1009.8 1002.6 DAY 31 7 30 21 10 28 9 24 25 24 22 15 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ASTARA (40709) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 38 25 N LONGITUDE 48 52 E DATA PROCESSING CENTER ELEVATION -18.0 M MEANS AND EXTREMES FOR THE YEAR 1992 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 0600 UTC. MEAN QFE PRESSURE IN HPA 1025.0 1020.7 1024.1 1019.8 1019.8 1012.7 1013.4 1017.6 1020.5 1021.5 1022.9 1024.6 1020.2 MAX. QFE PRESSURE IN HPA 1036.0 1032.4 1036.8 1028.9 1034.3 1022.3 1023.1 1024.6 1031.3 1034.4 1036.4 1035.5 1036.8 DAY 27 15 9 30 2 6 12 31 29 15 3 2 MIN. QFE PRESSURE IN HPA 1009.8 1008.7 1006.2 1009.8 1006.5 1005.2 1007.2 1009.9 1011.2 1008.3 1006.6 1013.6 1005.2 DAY 30 7 30 21 9 18 9 24 25 26 22 15 MEAN QNH PRESSURE IN HPA 1022.5 1018.3 1021.6 1017.4 1017.3 1010.2 1010.9 1015.2 1018.0 1019.1 1020.5 1022.1 1017.7 MAX. QNH PRESSURE IN HPA 1033.5 1029.9 1034.3 1026.4 1031.8 1019.8 1020.6 1022.1 1028.8 1031.9 1033.9 1033.0 1034.3 DAY 27 15 9 30 2 6 12 31 29 15 3 2 MIN. QNH PRESSURE IN HPA 1007.3 1006.2 1003.8 1007.3 1004.1 1002.8 1004.7 1007.4 1008.7 1005.8 1004.2 1011.1 1002.8 DAY 30 7 30 21 9 18 9 24 25 26 22 15 MEAN QFF PRESSURE IN HPA 1022.7 1018.5 1021.8 1017.7 1017.3 1010.6 1011.3 1015.5 1018.4 1019.4 1020.7 1022.4 1018.0 MAX. QFF PRESSURE IN HPA 1033.7 1030.1 1034.5 1026.7 1032.1 1020.1 1020.9 1022.5 1029.1 1032.2 1034.2 1033.2 1034.5 DAY 27 15 9 30 2 6 12 31 29 15 3 2 MIN. QFF PRESSURE IN HPA 1007.5 1006.6 1004.0 1007.7 1004.4 1003.1 1005.1 1007.8 1009.1 1006.2 1004.5 1011.4 1003.1 DAY 30 7 30 21 9 18 9 24 25 26 22 15 PRESSURE AT HOUR 0900 UTC. MEAN QFE PRESSURE IN HPA 1024.0 1020.0 1023.7 1019.3 1019.6 1012.2 1012.8 1017.2 1019.9 1020.5 1021.9 1023.5 1019.6 MAX. QFE PRESSURE IN HPA 1034.3 1032.7 1036.1 1029.1 1034.1 1021.8 1022.8 1024.4 1030.5 1033.5 1035.4 1035.7 1036.1 DAY 27 15 9 30 2 6 12 31 29 15 3 2 MIN. QFE PRESSURE IN HPA 1008.7 1008.2 1005.6 1008.6 1005.8 1004.6 1006.4 1008.7 1010.1 1005.9 1004.5 1013.2 1004.5 DAY 30 7 30 12 9 18 9 24 25 26 22 14 MEAN QNH PRESSURE IN HPA 1021.5 1017.5 1021.2 1016.8 1017.2 1009.8 1010.4 1014.8 1017.4 1018.0 1019.4 1021.1 1017.1 MAX. QNH PRESSURE IN HPA 1031.8 1030.2 1033.6 1026.6 1031.6 1019.3 1020.3 1021.9 1028.0 1031.0 1032.9 1033.2 1033.6 DAY 27 15 9 30 2 6 12 31 29 15 3 2 MIN. QNH PRESSURE IN HPA 1006.2 1005.7 1003.2 1006.1 1003.4 1002.2 1004.0 1006.2 1007.6 1003.5 1002.1 1010.7 1002.1 DAY 30 7 30 12 9 18 9 24 25 26 22 14 MEAN QFF PRESSURE IN HPA 1021.7 1017.8 1021.4 1017.1 1017.5 1010.1 1010.7 1015.1 1017.8 1018.3 1019.7 1021.3 1017.4 MAX. QFF PRESSURE IN HPA 1032.0 1030.4 1033.8 1026.9 1031.9 1019.6 1020.6 1022.3 1028.3 1031.3 1033.2 1033.4 1033.8 DAY 27 15 9 30 2 6 12 31 29 15 3 2 MIN. QFF PRESSURE IN HPA 1006.5 1006.1 1003.4 1006.4 1003.7 1002.5 1004.3 1006.6 1008.0 1003.8 1002.4 1011.0 1002.4 DAY 30 7 30 12 9 18 9 24 25 26 22 14 PRESSURE AT HOUR 1200 UTC. MEAN QFE PRESSURE IN HPA 1023.2 1018.9 1022.5 1018.4 1018.7 1011.5 1011.8 1016.3 1019.0 1019.6 1021.4 1022.9 1018.7 MAX. QFE PRESSURE IN HPA 1033.5 1032.0 1034.3 1029.2 1033.4 1021.4 1022.0 1023.7 1030.2 1032.9 1034.6 1036.2 1036.2 DAY 24 15 8 30 2 6 11 30 29 15 3 2 MIN. QFE PRESSURE IN HPA 1006.9 1007.8 1003.7 1005.7 1004.4 1004.1 1004.4 1006.9 1010.4 1006.5 1004.0 1012.3 1003.7 DAY 30 7 30 12 9 18 9 24 25 24 22 14 MEAN QNH PRESSURE IN HPA 1020.7 1016.4 1020.0 1016.0 1016.2 1009.0 1009.4 1013.8 1016.5 1017.1 1018.9 1020.5 1016.2 MAX. QNH PRESSURE IN HPA 1031.0 1029.5 1031.8 1026.7 1030.9 1018.9 1019.5 1021.2 1027.7 1030.4 1032.1 1033.7 1033.7 DAY 24 15 8 30 2 6 11 30 29 15 3 2 MIN. QNH PRESSURE IN HPA 1004.4 1005.3 1001.3 1003.3 1002.0 1001.7 1002.0 1004.4 1007.9 1004.1 1001.6 1009.8 1001.3 DAY 30 7 30 12 9 18 9 24 25 24 22 14 MEAN QFF PRESSURE IN HPA 1020.9 1016.7 1020.5 1016.2 1016.5 1009.4 1009.7 1014.2 1016.8 1017.4 1019.2 1020.7 1016.5 MAX. QFF PRESSURE IN HPA 1031.2 1029.7 1032.0 1027.0 1031.2 1019.2 1019.8 1021.6 1028.0 1030.7 1032.4 1033.9 1033.9 DAY 24 15 8 30 2 6 11 30 29 15 3 2 MIN. QFF PRESSURE IN HPA 1004.7 1005.6 1001.5 1003.6 1002.3 1002.0 1002.3 1004.8 1008.3 1004.4 1001.9 1010.1 1001.5 DAY 30 7 30 12 9 18 9 24 25 24 22 14 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ASTARA (40709) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 38 25 N LONGITUDE 48 52 E DATA PROCESSING CENTER ELEVATION -18.0 M MEANS AND EXTREMES FOR THE YEAR 1992 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 1500 UTC. MEAN QFE PRESSURE IN HPA 1023.8 1019.3 1022.6 1018.5 1018.6 1011.4 1011.4 1016.0 1019.0 1019.9 1022.1 1023.7 1018.9 MAX. QFE PRESSURE IN HPA 1035.1 1031.8 1035.5 1029.4 1032.9 1022.6 1021.7 1024.6 1029.8 1032.4 1034.6 1036.8 1036.8 DAY 24 15 8 30 2 6 11 30 28 15 3 2 MIN. QFE PRESSURE IN HPA 1007.6 1009.0 1003.5 1004.9 1005.5 1003.7 1003.9 1007.3 1011.8 1007.2 1004.4 1013.1 1003.5 DAY 30 7 30 12 9 18 9 24 17 24 22 14 MEAN QNH PRESSURE IN HPA 1021.3 1016.8 1020.1 1016.0 1016.1 1008.9 1008.9 1013.6 1016.5 1017.4 1019.7 1021.2 1016.4 MAX. QNH PRESSURE IN HPA 1032.6 1029.3 1033.0 1026.9 1030.4 1020.1 1019.2 1022.1 1027.3 1029.9 1032.1 1034.3 1034.3 DAY 24 15 8 30 2 6 11 30 28 15 3 2 MIN. QNH PRESSURE IN HPA 1005.1 1006.5 1001.1 1002.5 1003.1 1001.3 1001.5 1004.8 1009.3 1004.7 1002.0 1010.6 1001.1 DAY 30 7 30 12 9 18 9 24 17 24 22 14 MEAN QFF PRESSURE IN HPA 1021.5 1017.1 1020.3 1016.3 1016.4 1009.3 1009.3 1013.9 1016.9 1017.7 1019.9 1021.5 1016.7 MAX. QFF PRESSURE IN HPA 1032.8 1029.5 1033.2 1027.2 1030.7 1020.4 1019.5 1022.5 1027.6 1030.2 1032.4 1034.5 1034.5 DAY 24 15 8 30 2 6 11 30 29 15 3 2 MIN. QFF PRESSURE IN HPA 1005.4 1006.8 1001.3 1002.7 1003.4 1001.6 1001.8 1005.2 1009.7 1005.1 1002.3 1010.9 1001.3 DAY 30 7 30 12 9 18 9 24 17 24 22 14 PRESSURE AT HOUR 1800 UTC. MEAN QFE PRESSURE IN HPA 1024.1 1020.1 1023.0 1019.6 1019.1 1012.4 1012.4 1017.2 1019.8 1020.7 1022.6 1023.9 1019.6 MAX. QFE PRESSURE IN HPA 1035.9 1031.4 1036.5 1030.7 1034.0 1023.2 1023.2 1026.0 1030.4 1032.6 1035.5 1035.5 1036.5 DAY 24 15 8 30 1 6 11 30 28 15 2 2 MIN. QFE PRESSURE IN HPA 1007.8 1009.7 1004.7 1005.4 1004.7 1004.8 1005.0 1009.6 1012.7 1008.0 1004.6 1012.7 1004.6 DAY 30 6 30 12 9 27 9 18 6 24 22 13 MEAN QNH PRESSURE IN HPA 1021.6 1017.7 1020.5 1017.1 1016.6 1009.9 1009.9 1014.7 1017.3 1018.2 1020.1 1021.5 1017.1 MAX. QNH PRESSURE IN HPA 1033.4 1028.9 1034.0 1028.2 1031.5 1020.7 1020.7 1023.5 1027.9 1030.1 1033.0 1033.0 1034.0 DAY 24 15 8 30 1 6 11 30 28 15 2 2 MIN. QNH PRESSURE IN HPA 1005.3 1007.2 1002.3 1003.0 1002.3 1002.4 1002.6 1007.1 1010.2 1005.5 1002.2 1010.2 1002.2 DAY 30 6 30 12 9 27 9 18 6 24 22 13 MEAN QFF PRESSURE IN HPA 1021.8 1017.9 1020.7 1017.4 1016.6 1010.3 1010.3 1015.1 1017.7 1018.5 1020.4 1021.7 1017.4 MAX. QFF PRESSURE IN HPA 1033.6 1029.1 1034.2 1028.5 1031.8 1021.0 1021.0 1023.9 1028.2 1030.4 1033.3 1033.2 1034.2 DAY 24 15 8 30 1 6 11 30 28 15 2 2 MIN. QFF PRESSURE IN HPA 1005.6 1007.5 1002.5 1003.3 1002.6 1002.8 1003.0 1007.5 1010.6 1005.9 1002.5 1010.5 1002.5 DAY 30 6 30 12 9 27 9 18 6 24 22 13 PRESSURE AT HOUR 2100 UTC. MEAN QFE PRESSURE IN HPA 1024.1 1020.0 1022.4 1019.3 1018.4 1012.4 1012.5 1016.9 1019.6 1021.0 1022.1 1023.4 1019.3 MAX. QFE PRESSURE IN HPA 1034.6 1030.7 1035.6 1030.7 1033.7 1022.4 1022.8 1024.8 1030.2 1033.1 1036.1 1033.2 1036.1 DAY 26 15 8 30 1 6 11 30 28 14 2 2 MIN. QFE PRESSURE IN HPA 1008.0 1009.1 1003.7 1005.1 1004.2 1004.4 1005.7 1009.8 1012.7 1010.8 1003.7 1011.3 1003.7 DAY 30 18 30 12 9 27 2 18 6 23 22 13 MEAN QNH PRESSURE IN HPA 1021.6 1017.5 1020.0 1016.9 1015.9 1009.9 1010.0 1014.5 1017.1 1018.5 1019.6 1021.0 1016.9 MAX. QNH PRESSURE IN HPA 1032.1 1028.2 1033.1 1028.2 1031.2 1019.9 1020.3 1022.3 1027.7 1030.6 1033.6 1030.7 1033.6 DAY 26 15 8 30 1 6 11 30 28 14 2 2 MIN. QNH PRESSURE IN HPA 1005.5 1006.6 1001.3 1002.7 1001.8 1002.0 1003.3 1007.3 1010.2 1008.3 1001.3 1008.8 1001.3 DAY 30 18 30 12 9 27 2 18 6 23 22 13 MEAN QFF PRESSURE IN HPA 1021.8 1017.7 1020.2 1017.1 1016.2 1010.3 1010.4 1014.9 1017.5 1018.8 1019.9 1021.2 1017.2 MAX. QFF PRESSURE IN HPA 1032.3 1028.4 1033.3 1028.5 1031.5 1020.2 1020.6 1022.7 1028.0 1030.9 1033.9 1030.9 1033.9 DAY 26 15 8 30 1 6 11 30 28 14 2 2 MIN. QFF PRESSURE IN HPA 1005.8 1006.9 1001.5 1003.0 1002.1 1002.3 1003.6 1007.7 1010.6 1008.7 1001.6 1009.1 1001.5 DAY 30 18 30 12 9 27 2 18 6 23 22 13 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ASTARA (40709) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 38 25 N LONGITUDE 48 52 E DATA PROCESSING CENTER ELEVATION -18.0 M MEANS AND EXTREMES FOR THE YEAR 1993 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AIR TEMPERATURE (C) 4.4 3.3 7.6 12.2 17.8 21.3 23.8 24.4 20.4 15.4 6.8 5.3 13.6 MINIMUN AIR TEMPERATURE (C) 1.4 1.2 4.3 9.3 14.6 17.7 20.0 20.4 17.3 12.3 5.0 2.4 10.5 DAYS WITH MINIMUM TEMP. >=21 0 0 0 0 0 2 9 11 1 0 0 0 23 DAYS WITH MINIMUM TEMP. <=-4 0 0 0 0 0 0 0 0 0 0 0 0 0 DAYS WITH FREEZING MIN.<= 0 12 12 0 0 0 0 0 0 0 0 0 4 28 TEMPERATURE RECORDS LOWEST(C) -2.4 -2.6 0.6 5.2 8.4 14.8 17.0 16.4 12.4 8.0 0.4 -0.8 -2.6 DAY 20 18 13 23 10 22 6 3 25 31 25 7 MAXIMUM AIR TEMPERATURE (C) 8.2 5.7 11.5 15.8 21.4 25.1 27.6 28.5 23.9 19.3 8.7 8.5 17.0 DAYS WITH MAXIMUM TEMP. >=30 0 0 0 0 1 0 5 10 1 0 0 0 17 DAYS WITH MAXIMUM TEMP. <= 0 0 2 0 0 0 0 0 0 0 0 0 0 2 TEMPERATURE RECORDS HIGHEST(C) 22.0 11.0 20.8 23.2 30.0 29.2 31.6 32.0 30.4 26.6 16.4 17.0 32.0 DAY 28 27 8 9 15 25 22 16 14 1 8 23 DIF. BETWEEN (MAX.-MIN.) (C) 6.8 4.5 7.2 6.5 6.8 7.4 7.6 8.1 6.6 7.0 3.7 6.1 6.5 MEAN DAILY TEMP. (MDT) (C) 4.8 3.5 7.9 12.5 18.0 21.4 23.8 24.4 20.6 15.8 6.9 5.4 13.8 COOLING DEG. DAYS(BASE 21 0C) 0.0 0.0 0.0 0.0 2.5 28.9 86.4 106.2 25.6 0.5 0.0 0.0 250.1 HEATING DEG. DAYS(BASE 18 0C) 409.3 406.9 311.7 164.1 37.7 0.0 0.0 0.0 8.4 72.2 334.0 389.5 2133.8 DEWPOINT (MEAN C) -0.3 1.1 4.2 8.9 14.1 18.1 19.8 20.1 17.9 13.0 4.7 3.3 10.4 MIXING RATIO (G/KG) 3.68 4.11 5.16 7.15 10.15 13.12 14.58 14.94 12.93 9.35 5.38 4.79 8.78 VAPOUR PRESSURE (HPA) 6.03 6.73 8.40 11.56 16.31 20.92 23.21 23.79 20.70 15.19 8.81 7.84 14.12 SATURATION DEF. (HPA) 2.72 1.18 2.30 2.88 4.59 4.78 6.64 7.31 3.82 2.63 1.32 1.24 3.45 RELATIVE HUMIDITY (MEAN %) 75 86 82 82 80 83 80 79 86 87 87 88 83 RELATIVE HUMIDITY (MAX. %) 91 95 94 95 94 95 95 93 97 97 94 97 95 RELATIVE HUMIDITY (MIN. %) 55 74 65 67 65 68 62 62 72 71 77 74 68 RELATIVE HUMIDITY (MEAN% 03UTC) 79 91 91 91 88 91 89 88 93 93 90 92 90 RELATIVE HUMIDITY (MEAN% 09UTC) 63 79 70 73 69 72 64 66 77 75 83 78 72 RELATIVE HUMIDITY (MEAN% 15UTC) 79 86 80 81 77 77 73 74 85 89 88 89 82 RH=0 => RELATIVE HUMIDITY < 0.5% AMOUNT OF PRECIPITATION MM. 96.5 129.0 92.1 29.8 28.3 119.0 115.9 55.2 207.3 269.2 230.2 19.3 1391.8 DAYS WITH PRECIPITATION >=10 2 7 4 0 0 5 2 3 6 5 10 0 44 DAYS WITH PRECIPITATION >= 5 6 8 6 3 3 7 2 4 8 9 16 1 73 DAYS WITH PRECIPITATION >= 1 12 11 12 6 8 12 5 7 13 12 19 5 122 DAYS WITH PRECIPITATION 17 16 18 18 20 15 11 13 18 16 26 12 200 GREATEST DAILY PRECIPITATION 32.0 25.3 22.0 9.4 6.1 38.9 69.0 17.0 85.0 69.0 34.0 5.5 85.0 DAY 5 12 10 22 7 20 26 31 21 4 24 8 DAY WITH THUNDER STORM 0 0 0 3 7 7 0 2 1 0 0 0 20 DAYS WITH SNOW OR SLEET 6 9 1 0 0 0 0 0 0 0 1 3 20 DAYS WITH DUST 0 0 0 0 0 0 0 0 0 0 0 0 0 WIND DIRECTION (PREVAILING) 315 360 135 135 135 135 135 135 225 315 315 360 135 PREVAILING WIND SPEED(KNOTS) 6.6 5.0 5.7 6.8 6.9 7.3 6.6 7.7 3.9 7.2 6.8 5.4 6.8 PREVAILING WIND PERCENT 19.0 16.5 12.5 18.3 19.0 22.9 17.3 9.5 8.8 12.5 31.3 8.5 11.1 CALMS PERCENT OF WIND 48.8 53.6 57.7 47.5 45.6 47.5 48.4 51.9 53.8 58.9 41.7 65.3 51.7 NO. OF WIND OBSERVATION 248 224 248 240 248 240 248 243 240 248 240 248 2915 VECTOR WIND DIRECTION (MEAN) 313 353 112 118 130 141 112 100 163 342 331 21 51 VECTOR WIND MAGNITUDE(KNOTS) 1.7 0.9 0.5 1.1 1.3 2.0 1.4 0.4 0.4 0.9 3.3 0.3 0.3 WIND STEADINESES (MEAN %) 47.2 32.1 20.0 34.4 40.6 60.6 46.7 15.4 14.8 36.0 89.2 16.7 10.3 WIND SPEED (MEAN KNOTS) 3.6 2.8 2.5 3.2 3.2 3.3 3.0 2.6 2.7 2.5 3.7 1.8 2.9 FASTEST WIND DIRECTION 240 20 240 260 30 150 150 130 330 50 330 310 240 FASTEST WIND SPEED (KNOTS) 29 16 39 19 14 16 14 16 14 14 21 14 39 DAY 28 8 8 8 6 2 8 25 21 1 13 5 DAYS WITH SKY CLEAR (0-2)/8 10 4 9 5 8 10 10 15 13 12 1 6 103 DAYS WITH P.CLOUDY (3-6)/8 10 7 8 9 8 11 17 9 6 7 5 11 108 DAYS WITH CLOUDY (7-8)/8 11 17 14 16 15 9 4 7 11 12 24 14 154 DAYS WITH VISIBILITY =< 2 KM 8 13 16 8 2 6 3 2 11 7 11 13 100 DURATION OF SUNSHINE HOURS 112.8 75.2 138.1 116.1 169.1 186.7 214.4 209.6 150.4 140.6 34.9 88.8 1636.7 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ASTARA (40709) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 38 25 N LONGITUDE 48 52 E DATA PROCESSING CENTER ELEVATION -18.0 M MEANS AND EXTREMES FOR THE YEAR 1993 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL MEAN QFE PRESSURE IN HPA 1025.5 1026.9 1021.8 1017.6 1016.4 1013.8 1014.2 1014.6 1017.2 1026.6 1029.0 1026.5 1020.8 MAX. QFE PRESSURE IN HPA 1045.7 1042.1 1035.3 1027.9 1031.8 1027.1 1022.5 1020.4 1031.6 1036.9 1040.5 1035.9 1045.7 DAY-HOUR 6- 6 9- 6 16- 6 23- 6 8-18 22- 6 27- 6 24- 6 22- 6 20- 6 20-18 20- 6 MIN. QFE PRESSURE IN HPA 1005.9 1013.3 1004.9 1005.9 1007.8 1004.5 1003.6 1004.2 1004.6 1009.7 1009.9 1016.3 1003.6 DAY-HOUR 28-12 6-18 8-12 8-15 15-15 16-15 24-15 12-15 3-15 1- 6 10- 9 22-12 MEAN QNH PRESSURE IN HPA 1023.0 1024.5 1019.3 1015.2 1013.9 1011.4 1011.7 1012.1 1014.8 1024.1 1026.5 1024.0 1018.4 MAX. QNH PRESSURE IN HPA 1043.2 1039.6 1032.8 1025.4 1029.3 1024.6 1020.0 1017.9 1029.1 1034.4 1038.0 1033.4 1043.2 DAY-HOUR 6- 6 9- 6 16- 6 23- 6 8-18 22- 6 27- 6 24- 6 22- 6 20- 6 20-18 20- 6 MIN. QNH PRESSURE IN HPA 1003.5 1010.8 1002.5 1003.5 1005.3 1002.1 1001.2 1001.8 1002.2 1007.2 1007.4 1013.8 1001.2 DAY-HOUR 28-12 6-18 8-12 8-15 15-15 16-15 24-15 12-15 3-15 1- 6 10- 9 22-12 MEAN QFF PRESSURE IN HPA 1023.3 1024.7 1019.6 1015.4 1014.2 1011.7 1012.1 1012.5 1015.1 1024.4 1026.7 1024.2 1018.7 MAX. QFF PRESSURE IN HPA 1043.4 1039.8 1033.0 1025.7 1029.6 1025.0 1020.4 1018.3 1029.4 1034.7 1038.2 1033.6 1043.4 DAY-HOUR 6- 6 9- 6 16- 6 23- 6 8-18 22- 6 27- 6 28- 9 22- 6 20- 6 20-18 20- 6 MIN. QFF PRESSURE IN HPA 1003.8 1011.1 1002.7 1003.7 1005.7 1002.4 1001.5 1002.2 1002.5 1007.6 1007.8 1014.1 1001.5 DAY-HOUR 28-12 6-18 8-12 8-15 15-15 16-15 24-15 12-15 3-15 1- 6 10- 9 22-12 PRESSURE AT HOUR 0000 UTC. MEAN QFE PRESSURE IN HPA 1025.1 1026.6 1021.3 1017.7 1015.8 1013.7 1014.0 1014.4 1017.3 1026.1 1028.7 1026.4 1020.6 MAX. QFE PRESSURE IN HPA 1043.8 1038.6 1032.2 1026.2 1030.5 1025.9 1021.4 1019.1 1030.7 1035.0 1039.7 1034.5 1043.8 DAY 6 9 16 1 9 22 27 3 22 20 21 6 MIN. QFE PRESSURE IN HPA 1007.1 1016.1 1008.1 1008.5 1009.1 1005.6 1007.4 1005.6 1007.4 1011.6 1012.4 1017.5 1005.6 DAY 29 21 8 11 14 28 24 12 14 1 10 5 MEAN QNH PRESSURE IN HPA 1022.6 1024.1 1018.9 1015.2 1013.3 1011.2 1011.5 1012.0 1014.8 1023.6 1026.2 1023.9 1018.1 MAX. QNH PRESSURE IN HPA 1041.3 1036.1 1029.7 1023.7 1028.0 1023.4 1018.9 1016.6 1028.2 1032.5 1037.2 1032.0 1041.3 DAY 6 9 16 1 9 22 27 3 22 20 21 6 MIN. QNH PRESSURE IN HPA 1004.6 1013.6 1005.6 1006.0 1006.6 1003.2 1004.9 1003.2 1004.9 1009.1 1009.9 1015.0 1003.2 DAY 29 21 8 11 14 28 24 12 14 1 10 5 MEAN QFF PRESSURE IN HPA 1022.8 1024.3 1019.1 1015.5 1013.7 1011.6 1011.9 1012.4 1015.2 1023.9 1026.4 1024.1 1018.4 MAX. QFF PRESSURE IN HPA 1041.5 1036.3 1029.9 1024.0 1028.3 1023.7 1019.3 1017.0 1028.5 1032.8 1037.4 1032.2 1041.5 DAY 6 9 16 1 9 22 27 3 22 20 21 6 MIN. QFF PRESSURE IN HPA 1005.0 1013.8 1005.9 1006.4 1007.0 1003.5 1005.3 1003.5 1005.3 1009.5 1010.2 1015.2 1003.5 DAY 29 21 8 11 14 28 24 12 14 1 10 5 PRESSURE AT HOUR 0300 UTC. MEAN QFE PRESSURE IN HPA 1025.2 1027.0 1021.7 1017.8 1016.4 1014.4 1014.9 1015.2 1017.6 1026.5 1028.9 1026.4 1021.0 MAX. QFE PRESSURE IN HPA 1044.8 1040.2 1033.7 1027.5 1031.1 1027.0 1022.2 1020.0 1031.1 1036.1 1039.7 1034.7 1044.8 DAY 6 9 16 23 9 22 27 24 22 20 21 8 MIN. QFE PRESSURE IN HPA 1009.7 1015.9 1006.2 1007.6 1009.8 1007.4 1007.4 1006.1 1007.9 1010.7 1010.8 1017.0 1006.1 DAY 29 21 8 11 31 28 24 12 14 1 10 18 MEAN QNH PRESSURE IN HPA 1022.7 1024.5 1019.2 1015.4 1013.9 1012.0 1012.4 1012.7 1015.2 1024.1 1026.4 1023.9 1018.5 MAX. QNH PRESSURE IN HPA 1042.3 1037.7 1031.2 1025.0 1028.6 1024.5 1019.7 1017.5 1028.6 1033.6 1037.2 1032.2 1042.3 DAY 6 9 16 23 9 22 27 24 22 20 21 8 MIN. QNH PRESSURE IN HPA 1007.2 1013.4 1003.8 1005.1 1007.3 1004.9 1004.9 1003.7 1005.4 1008.2 1008.3 1014.5 1003.7 DAY 29 21 8 11 31 28 24 12 14 1 10 18 MEAN QFF PRESSURE IN HPA 1022.9 1024.7 1019.4 1015.6 1014.3 1012.3 1012.8 1013.1 1015.5 1024.4 1026.7 1024.1 1018.8 MAX. QFF PRESSURE IN HPA 1042.5 1037.9 1031.4 1025.2 1028.9 1024.9 1020.1 1017.9 1028.9 1033.9 1037.4 1032.4 1042.5 DAY 6 9 16 23 9 22 27 24 22 20 21 8 MIN. QFF PRESSURE IN HPA 1007.6 1013.6 1004.0 1005.4 1007.7 1005.3 1005.3 1004.0 1005.8 1008.6 1008.6 1014.8 1004.0 DAY 29 21 8 11 31 28 24 12 14 1 10 18 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ASTARA (40709) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 38 25 N LONGITUDE 48 52 E DATA PROCESSING CENTER ELEVATION -18.0 M MEANS AND EXTREMES FOR THE YEAR 1993 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 0600 UTC. MEAN QFE PRESSURE IN HPA 1026.3 1028.0 1022.6 1018.2 1017.0 1014.9 1015.2 1015.6 1018.2 1027.6 1029.8 1027.3 1021.7 MAX. QFE PRESSURE IN HPA 1045.7 1042.1 1035.3 1027.9 1031.1 1027.1 1022.5 1020.4 1031.6 1036.9 1040.2 1035.9 1045.7 DAY 6 9 16 23 9 22 27 24 22 20 21 20 MIN. QFE PRESSURE IN HPA 1011.1 1016.6 1005.0 1007.4 1010.0 1007.7 1006.9 1006.1 1008.5 1009.7 1010.8 1017.3 1005.0 DAY 28 21 8 11 15 28 24 12 3 1 10 18 MEAN QNH PRESSURE IN HPA 1023.8 1025.5 1020.1 1015.8 1014.6 1012.5 1012.7 1013.1 1015.7 1025.1 1027.3 1024.9 1019.3 MAX. QNH PRESSURE IN HPA 1043.2 1039.6 1032.8 1025.4 1028.6 1024.6 1020.0 1017.9 1029.1 1034.4 1037.7 1033.4 1043.2 DAY 6 9 16 23 9 22 27 24 22 20 21 20 MIN. QNH PRESSURE IN HPA 1008.6 1014.1 1002.6 1004.9 1007.5 1005.2 1004.4 1003.7 1006.0 1007.2 1008.3 1014.8 1002.6 DAY 28 21 8 11 15 28 24 12 3 1 10 18 MEAN QFF PRESSURE IN HPA 1024.1 1025.7 1020.4 1016.0 1014.9 1012.8 1013.1 1013.5 1016.1 1025.4 1027.5 1025.1 1019.6 MAX. QFF PRESSURE IN HPA 1043.4 1039.8 1033.0 1025.7 1028.9 1025.0 1020.4 1018.3 1029.4 1034.7 1037.9 1033.6 1043.4 DAY 6 9 16 23 9 22 27 24 22 20 21 20 MIN. QFF PRESSURE IN HPA 1009.0 1014.3 1002.8 1005.3 1007.9 1005.6 1004.8 1004.1 1006.4 1007.6 1008.6 1015.1 1002.8 DAY 28 21 8 11 15 28 24 12 3 1 10 18 PRESSURE AT HOUR 0900 UTC. MEAN QFE PRESSURE IN HPA 1025.7 1027.3 1022.2 1017.8 1016.8 1014.3 1014.6 1014.9 1017.5 1026.9 1028.9 1026.4 1021.1 MAX. QFE PRESSURE IN HPA 1043.9 1041.3 1034.3 1026.2 1030.2 1026.7 1022.1 1020.4 1031.1 1034.9 1039.2 1034.4 1043.9 DAY 6 9 16 23 9 22 27 28 22 20 21 8 MIN. QFE PRESSURE IN HPA 1009.4 1016.0 1006.1 1007.3 1009.4 1006.9 1005.8 1005.5 1007.2 1010.4 1009.9 1016.9 1005.5 DAY 28 21 8 8 15 16 24 12 3 1 10 13 MEAN QNH PRESSURE IN HPA 1023.2 1024.9 1019.7 1015.3 1014.3 1011.9 1012.2 1012.5 1015.0 1024.4 1026.4 1024.0 1018.6 MAX. QNH PRESSURE IN HPA 1041.4 1038.8 1031.8 1023.7 1027.7 1024.2 1019.6 1017.9 1028.6 1032.4 1036.7 1031.9 1041.4 DAY 6 9 16 23 9 22 27 28 22 20 21 8 MIN. QNH PRESSURE IN HPA 1006.9 1013.5 1003.7 1004.8 1006.9 1004.4 1003.4 1003.1 1004.7 1007.9 1007.4 1014.4 1003.1 DAY 28 21 8 8 15 16 24 12 3 1 10 13 MEAN QFF PRESSURE IN HPA 1023.4 1025.1 1020.0 1015.6 1014.6 1012.2 1012.5 1012.9 1015.3 1024.7 1026.6 1024.2 1018.9 MAX. QFF PRESSURE IN HPA 1041.6 1039.0 1032.0 1024.0 1028.0 1024.6 1020.0 1018.3 1028.9 1032.7 1036.9 1032.1 1041.6 DAY 6 9 16 23 9 22 27 28 22 20 21 8 MIN. QFF PRESSURE IN HPA 1007.3 1013.8 1003.9 1005.1 1007.3 1004.8 1003.8 1003.5 1005.1 1008.3 1007.8 1014.7 1003.5 DAY 28 21 8 8 15 16 24 12 3 1 10 13 PRESSURE AT HOUR 1200 UTC. MEAN QFE PRESSURE IN HPA 1024.8 1026.3 1021.2 1017.0 1016.3 1013.5 1013.6 1013.9 1016.4 1026.0 1028.2 1025.7 1020.2 MAX. QFE PRESSURE IN HPA 1042.9 1040.1 1032.9 1025.3 1030.1 1025.4 1021.1 1020.1 1029.7 1033.6 1038.4 1033.6 1042.9 DAY 6 9 16 24 8 22 27 28 22 20 25 8 MIN. QFE PRESSURE IN HPA 1005.9 1015.2 1004.9 1006.4 1008.0 1005.0 1004.2 1004.4 1005.2 1010.9 1011.1 1016.3 1004.2 DAY 28 6 8 8 15 28 24 12 3 1 10 22 MEAN QNH PRESSURE IN HPA 1022.4 1023.8 1018.7 1014.5 1013.8 1011.1 1011.1 1011.5 1013.9 1023.5 1025.7 1023.2 1017.8 MAX. QNH PRESSURE IN HPA 1040.4 1037.6 1030.4 1022.8 1027.6 1022.9 1018.6 1017.6 1027.2 1031.1 1035.9 1031.1 1040.4 DAY 6 9 16 24 8 22 27 28 22 20 25 8 MIN. QNH PRESSURE IN HPA 1003.5 1012.7 1002.5 1004.0 1005.5 1002.6 1001.8 1002.0 1002.8 1008.4 1008.6 1013.8 1001.8 DAY 28 6 8 8 15 28 24 12 3 1 10 22 MEAN QFF PRESSURE IN HPA 1022.6 1024.0 1019.0 1014.8 1014.1 1011.4 1011.5 1011.8 1014.2 1023.8 1026.0 1023.5 1018.1 MAX. QFF PRESSURE IN HPA 1040.6 1037.8 1030.6 1023.1 1027.9 1023.3 1019.0 1018.0 1027.5 1031.4 1036.1 1031.3 1040.6 DAY 6 9 16 24 8 22 27 28 22 20 25 8 MIN. QFF PRESSURE IN HPA 1003.8 1013.0 1002.7 1004.2 1005.9 1003.0 1002.1 1002.4 1003.1 1008.8 1008.9 1014.1 1002.1 DAY 28 6 8 8 15 28 24 12 3 1 10 22 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ASTARA (40709) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 38 25 N LONGITUDE 48 52 E DATA PROCESSING CENTER ELEVATION -18.0 M MEANS AND EXTREMES FOR THE YEAR 1993 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 1500 UTC. MEAN QFE PRESSURE IN HPA 1025.6 1026.7 1021.4 1016.8 1016.0 1013.0 1013.2 1013.6 1016.3 1026.2 1028.9 1026.4 1020.3 MAX. QFE PRESSURE IN HPA 1042.4 1039.8 1032.4 1025.1 1030.4 1024.4 1019.9 1019.6 1030.0 1033.9 1039.2 1033.8 1042.4 DAY 6 9 16 24 8 21 27 28 22 20 20 8 MIN. QFE PRESSURE IN HPA 1006.0 1013.9 1005.4 1005.9 1007.8 1004.5 1003.6 1004.2 1004.6 1014.7 1012.8 1016.6 1003.6 DAY 28 6 8 8 15 16 24 12 3 26 9 22 MEAN QNH PRESSURE IN HPA 1023.1 1024.2 1018.9 1014.4 1013.5 1010.5 1010.8 1011.1 1013.8 1023.7 1026.4 1023.9 1017.9 MAX. QNH PRESSURE IN HPA 1039.9 1037.3 1029.9 1022.6 1027.9 1021.9 1017.4 1017.1 1027.5 1031.4 1036.7 1031.3 1039.9 DAY 6 9 16 24 8 21 27 28 22 20 20 8 MIN. QNH PRESSURE IN HPA 1003.6 1011.4 1003.0 1003.5 1005.3 1002.1 1001.2 1001.8 1002.2 1012.2 1010.3 1014.1 1001.2 DAY 28 6 8 8 15 16 24 12 3 26 9 22 MEAN QFF PRESSURE IN HPA 1023.3 1024.4 1019.2 1014.6 1013.8 1010.9 1011.1 1011.5 1014.1 1024.0 1026.6 1024.1 1018.1 MAX. QFF PRESSURE IN HPA 1040.1 1037.5 1030.1 1022.9 1028.2 1022.3 1017.8 1017.5 1027.8 1031.7 1036.9 1031.5 1040.1 DAY 6 9 16 24 8 21 27 28 22 20 20 8 MIN. QFF PRESSURE IN HPA 1003.9 1011.6 1003.2 1003.7 1005.7 1002.4 1001.5 1002.2 1002.5 1012.5 1010.6 1014.4 1001.5 DAY 28 6 8 8 15 16 24 12 3 26 9 22 PRESSURE AT HOUR 1800 UTC. MEAN QFE PRESSURE IN HPA 1026.1 1027.1 1022.1 1018.1 1016.6 1013.5 1014.1 1014.6 1017.4 1026.9 1029.3 1026.9 1021.1 MAX. QFE PRESSURE IN HPA 1042.0 1039.2 1032.9 1026.4 1031.8 1025.8 1021.3 1020.1 1030.6 1034.3 1040.5 1033.8 1042.0 DAY 5 9 16 23 8 21 26 2 21 19 20 2 MIN. QFE PRESSURE IN HPA 1007.5 1013.3 1006.5 1007.9 1008.8 1004.7 1004.3 1005.3 1005.5 1013.9 1013.3 1018.1 1004.3 DAY 28 6 8 8 15 16 24 12 13 26 9 22 MEAN QNH PRESSURE IN HPA 1023.6 1024.6 1019.7 1015.6 1014.2 1011.0 1011.7 1012.2 1014.9 1024.4 1026.8 1024.4 1018.6 MAX. QNH PRESSURE IN HPA 1039.5 1036.7 1030.4 1023.9 1029.3 1023.3 1018.8 1017.6 1028.1 1031.8 1038.0 1031.3 1039.5 DAY 5 9 16 23 8 21 26 2 21 19 20 2 MIN. QNH PRESSURE IN HPA 1005.0 1010.8 1004.1 1005.4 1006.3 1002.3 1001.9 1002.9 1003.1 1011.4 1010.8 1015.6 1001.9 DAY 28 6 8 8 15 16 24 12 13 26 9 22 MEAN QFF PRESSURE IN HPA 1023.8 1024.8 1019.9 1015.9 1014.5 1011.4 1012.1 1012.5 1015.3 1024.7 1027.0 1024.6 1018.9 MAX. QFF PRESSURE IN HPA 1039.7 1036.9 1030.6 1024.2 1029.6 1023.6 1019.2 1018.0 1028.4 1032.1 1038.2 1031.5 1039.7 DAY 5 9 16 23 8 21 26 2 21 19 20 8 MIN. QFF PRESSURE IN HPA 1005.4 1011.1 1004.4 1005.8 1006.7 1002.6 1002.3 1003.3 1003.4 1011.8 1011.1 1015.9 1002.3 DAY 28 6 8 8 15 16 24 12 13 26 9 22 PRESSURE AT HOUR 2100 UTC. MEAN QFE PRESSURE IN HPA 1025.6 1026.7 1021.9 1017.8 1016.2 1013.5 1014.2 1014.6 1017.4 1026.7 1029.1 1026.6 1020.8 MAX. QFE PRESSURE IN HPA 1043.0 1037.9 1032.4 1026.4 1031.2 1026.3 1021.7 1020.1 1030.8 1034.4 1040.5 1034.5 1043.0 DAY 5 8 16 23 8 21 26 2 21 19 20 5 MIN. QFE PRESSURE IN HPA 1007.7 1015.2 1008.7 1007.9 1009.3 1004.5 1005.6 1005.3 1005.8 1014.2 1013.4 1019.0 1004.5 DAY 28 6 5 8 13 16 24 11 13 26 9 13 MEAN QNH PRESSURE IN HPA 1023.1 1024.2 1019.4 1015.3 1013.8 1011.0 1011.7 1012.1 1014.9 1024.2 1026.6 1024.1 1018.4 MAX. QNH PRESSURE IN HPA 1040.5 1035.4 1029.9 1023.9 1028.7 1023.8 1019.2 1017.6 1028.3 1031.9 1038.0 1032.0 1040.5 DAY 5 8 16 23 8 21 26 2 21 19 20 5 MIN. QNH PRESSURE IN HPA 1005.2 1012.7 1006.2 1005.4 1006.8 1002.1 1003.2 1002.9 1003.4 1011.7 1010.9 1016.5 1002.1 DAY 28 6 5 8 13 16 24 11 13 26 9 13 MEAN QFF PRESSURE IN HPA 1023.3 1024.4 1019.6 1015.6 1014.1 1011.4 1012.1 1012.5 1015.3 1024.5 1026.8 1024.3 1018.7 MAX. QFF PRESSURE IN HPA 1040.7 1035.6 1030.1 1024.2 1029.0 1024.1 1019.6 1018.0 1028.6 1032.2 1038.2 1032.2 1040.7 DAY 5 8 16 23 8 21 26 2 21 19 20 5 MIN. QFF PRESSURE IN HPA 1005.6 1013.0 1006.5 1005.8 1007.2 1002.4 1003.6 1003.3 1003.7 1012.1 1011.2 1016.7 1002.4 DAY 28 6 5 8 13 16 24 11 13 26 9 13 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ASTARA (40709) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 38 25 N LONGITUDE 48 52 E DATA PROCESSING CENTER ELEVATION -18.0 M MEANS AND EXTREMES FOR THE YEAR 1994 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AIR TEMPERATURE (C) 5.6 2.7 7.6 13.9 18.0 20.8 24.1 24.7 21.4 16.7 11.5 5.1 14.3 MINIMUN AIR TEMPERATURE (C) 2.9 0.4 5.1 10.5 14.9 17.2 19.4 20.7 16.8 13.0 8.7 2.3 11.0 DAYS WITH MINIMUM TEMP. >=21 0 0 0 0 0 0 7 15 1 0 0 0 23 DAYS WITH MINIMUM TEMP. <=-4 0 2 0 0 0 0 0 0 0 0 0 0 2 DAYS WITH FREEZING MIN.<= 0 3 14 0 0 0 0 0 0 0 0 0 9 26 TEMPERATURE RECORDS LOWEST(C) -1.6 -5.0 0.8 4.4 11.4 13.4 15.8 19.0 13.6 9.8 4.0 -2.2 -5.0 DAY 24 19 2 1 18 6 1 5 10 24 10 8 MAXIMUM AIR TEMPERATURE (C) 8.7 5.8 10.9 17.4 21.0 24.4 28.5 28.5 25.8 20.8 14.6 8.8 17.9 DAYS WITH MAXIMUM TEMP. >=30 0 0 0 2 1 0 7 11 0 0 0 0 21 DAYS WITH MAXIMUM TEMP. <= 0 0 1 0 0 0 0 0 0 0 0 0 0 1 TEMPERATURE RECORDS HIGHEST(C) 18.0 13.4 20.2 32.0 31.4 29.0 34.6 32.0 28.0 25.2 20.6 21.8 34.6 DAY 31 5 19 24 29 11 22 15 27 5 3 14 DIF. BETWEEN (MAX.-MIN.) (C) 5.8 5.4 5.8 6.9 6.1 7.2 9.1 7.8 9.0 7.8 5.9 6.5 6.9 MEAN DAILY TEMP. (MDT) (C) 5.8 3.1 8.0 13.9 18.0 20.8 23.9 24.6 21.3 16.9 11.7 5.6 14.5 COOLING DEG. DAYS(BASE 21 0C) 0.0 0.0 0.0 9.1 8.1 21.7 91.2 111.0 17.9 0.0 0.0 0.0 259.0 HEATING DEG. DAYS(BASE 18 0C) 378.7 417.6 310.9 142.8 34.5 5.1 0.0 0.0 0.0 53.5 190.1 385.6 1918.8 DEWPOINT (MEAN C) 3.8 0.6 5.1 10.4 15.1 16.6 17.7 20.1 17.7 14.3 9.4 2.3 11.1 MIXING RATIO (G/KG) 4.96 3.97 5.44 8.00 10.80 11.99 12.85 14.87 12.68 10.19 7.43 4.52 8.97 VAPOUR PRESSURE (HPA) 8.09 6.50 8.85 12.93 17.34 19.17 20.47 23.64 20.39 16.49 12.03 7.39 14.44 SATURATION DEF. (HPA) 1.15 1.04 1.80 3.83 3.61 5.86 10.14 7.83 5.59 3.08 1.80 1.61 3.95 RELATIVE HUMIDITY (MEAN %) 89 88 85 82 84 79 70 77 81 87 88 84 83 RELATIVE HUMIDITY (MAX. %) 97 96 95 93 94 93 90 92 95 97 96 94 94 RELATIVE HUMIDITY (MIN. %) 76 75 72 67 73 63 50 60 65 73 76 66 68 RELATIVE HUMIDITY (MEAN% 03UTC) 92 91 91 89 92 86 80 87 90 94 93 91 90 RELATIVE HUMIDITY (MEAN% 09UTC) 80 80 75 72 75 68 54 64 69 77 78 69 72 RELATIVE HUMIDITY (MEAN% 15UTC) 89 89 85 80 83 73 60 73 78 87 90 85 81 RH=0 => RELATIVE HUMIDITY < 0.5% AMOUNT OF PRECIPITATION MM. 22.9 103.9 119.1 37.1 77.5 97.5 19.6 54.7 40.2 126.6 252.4 88.8 1040.3 DAYS WITH PRECIPITATION >=10 1 4 4 1 3 3 1 2 2 5 8 3 37 DAYS WITH PRECIPITATION >= 5 1 6 11 3 4 4 1 2 3 6 8 7 56 DAYS WITH PRECIPITATION >= 1 7 11 14 7 8 10 1 3 5 12 11 9 98 DAYS WITH PRECIPITATION 16 19 19 16 16 13 2 5 6 15 18 12 157 GREATEST DAILY PRECIPITATION 11.0 29.1 16.3 10.5 30.0 40.0 19.2 30.5 14.0 33.0 103.0 23.0 103.0 DAY 21 10 8 30 6 3 26 19 3 15 5 20 DAY WITH THUNDER STORM 0 0 1 2 8 4 0 0 0 0 0 0 15 DAYS WITH SNOW OR SLEET 0 9 0 0 0 0 0 0 0 0 0 1 10 DAYS WITH DUST 0 0 0 0 0 0 0 0 0 0 0 0 0 WIND DIRECTION (PREVAILING) 135 360 135 135 135 135 135 135 135 135 315 315 135 PREVAILING WIND SPEED(KNOTS) 6.9 5.2 7.0 5.9 6.5 7.3 7.4 7.1 6.5 7.0 8.4 7.0 6.8 PREVAILING WIND PERCENT 8.9 14.7 10.5 12.5 19.8 17.1 13.3 14.9 10.8 7.3 12.1 12.1 10.4 CALMS PERCENT OF WIND 67.7 66.5 63.7 68.3 68.5 70.8 70.6 70.2 73.3 73.8 74.2 67.3 69.6 NO. OF WIND OBSERVATION 248 224 248 240 248 240 248 248 240 248 240 248 2920 VECTOR WIND DIRECTION (MEAN) 128 351 106 149 139 135 124 115 114 30 339 343 99 VECTOR WIND MAGNITUDE(KNOTS) 0.4 0.9 0.6 0.5 1.4 1.0 1.3 1.2 0.8 0.2 1.1 1.3 0.4 WIND STEADINESES (MEAN %) 22.2 47.4 28.6 25.0 70.0 50.0 72.2 63.2 53.3 11.1 57.9 65.0 21.1 WIND SPEED (MEAN KNOTS) 1.8 1.9 2.1 2.0 2.0 2.0 1.8 1.9 1.5 1.8 1.9 2.0 1.9 FASTEST WIND DIRECTION 330 360 150 270 150 150 150 150 330 150 330 240 270 FASTEST WIND SPEED (KNOTS) 19 12 14 35 16 16 19 16 12 16 19 19 35 DAY 20 1 1 24 7 6 21 30 2 2 5 14 DAYS WITH SKY CLEAR (0-2)/8 6 6 5 6 9 12 14 13 19 11 7 8 116 DAYS WITH P.CLOUDY (3-6)/8 6 2 8 9 9 6 10 8 5 7 5 7 82 DAYS WITH CLOUDY (7-8)/8 19 20 18 15 13 12 7 10 6 13 18 16 167 DAYS WITH VISIBILITY =< 2 KM 9 13 9 7 2 3 0 2 3 3 7 6 64 DURATION OF SUNSHINE HOURS 93.3 70.4 118.7 133.6 176.4 193.9 267.2 209.3 228.0 140.6 100.5 97.0 1828.9 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ASTARA (40709) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 38 25 N LONGITUDE 48 52 E DATA PROCESSING CENTER ELEVATION -18.0 M MEANS AND EXTREMES FOR THE YEAR 1994 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL MEAN QFE PRESSURE IN HPA 1023.3 1025.5 1022.0 1019.8 1016.7 1014.2 1011.8 1012.8 1021.5 1024.3 1020.0 1026.0 1019.8 MAX. QFE PRESSURE IN HPA 1037.5 1042.5 1034.1 1035.9 1026.5 1021.3 1017.6 1018.6 1027.0 1036.7 1033.8 1039.3 1042.5 DAY-HOUR 9- 6 17-21 1- 0 4-18 18- 6 4- 6 9-18 6-18 23- 9 23-18 6-18 21- 9 MIN. QFE PRESSURE IN HPA 1010.1 1005.6 1007.9 1004.2 1007.7 1002.5 1004.2 1005.6 1015.2 1011.7 1008.6 1009.4 1002.5 DAY-HOUR 16-12 1- 3 7- 0 23-21 12-15 15-15 19-18 10-15 27-12 14-12 26- 3 3-12 MEAN QNH PRESSURE IN HPA 1020.8 1023.0 1019.5 1017.3 1014.2 1011.7 1009.3 1010.3 1019.0 1021.8 1017.6 1023.5 1017.3 MAX. QNH PRESSURE IN HPA 1035.0 1040.0 1031.6 1033.4 1024.0 1018.8 1015.1 1016.1 1024.5 1034.2 1031.3 1036.8 1040.0 DAY-HOUR 9- 6 17-21 1- 0 4-18 18- 6 4- 6 9-18 6-18 23- 9 23-18 6-18 21- 9 MIN. QNH PRESSURE IN HPA 1007.6 1003.2 1005.4 1001.8 1005.2 1000.1 1001.8 1003.2 1012.7 1009.2 1006.1 1006.9 1000.1 DAY-HOUR 16-12 1- 3 7- 0 23-21 12-15 15-15 19-18 10-15 27-12 14-12 26- 3 3-12 MEAN QFF PRESSURE IN HPA 1021.0 1023.2 1019.6 1017.6 1014.6 1012.0 1009.7 1010.7 1019.4 1022.1 1017.8 1023.7 1017.6 MAX. QFF PRESSURE IN HPA 1035.2 1040.2 1031.8 1033.7 1024.3 1019.1 1015.5 1016.5 1024.9 1034.5 1031.5 1037.0 1040.2 DAY-HOUR 9- 6 17-21 1- 6 5- 6 18- 6 4- 6 13- 6 6-18 23- 9 23-18 6-18 21- 9 MIN. QFF PRESSURE IN HPA 1007.9 1003.4 1005.7 1002.1 1005.6 1000.4 1002.2 1003.5 1013.1 1009.6 1006.4 1007.2 1000.4 DAY-HOUR 16-12 1- 3 7- 0 23-21 12-15 15-15 19-18 10-15 27-12 14-12 26- 3 3-12 PRESSURE AT HOUR 0000 UTC. MEAN QFE PRESSURE IN HPA 1023.5 1024.9 1021.7 1019.7 1016.2 1013.9 1011.7 1012.7 1021.0 1023.8 1019.7 1025.9 1019.6 MAX. QFE PRESSURE IN HPA 1035.3 1041.8 1034.1 1034.6 1024.2 1020.1 1016.5 1017.8 1025.0 1035.7 1030.0 1037.7 1041.8 DAY 9 18 1 5 18 4 10 7 24 24 7 22 MIN. QFE PRESSURE IN HPA 1010.7 1008.4 1007.9 1004.2 1008.8 1006.3 1004.8 1007.3 1016.6 1012.1 1009.4 1010.8 1004.2 DAY 30 1 7 24 1 16 20 2 8 19 27 4 MEAN QNH PRESSURE IN HPA 1021.0 1022.5 1019.3 1017.2 1013.7 1011.4 1009.3 1010.2 1018.5 1021.4 1017.2 1023.4 1017.1 MAX. QNH PRESSURE IN HPA 1032.8 1039.3 1031.6 1032.1 1021.7 1017.6 1014.0 1015.3 1022.5 1033.2 1027.5 1035.2 1039.3 DAY 9 18 1 5 18 4 10 7 24 24 7 22 MIN. QNH PRESSURE IN HPA 1008.2 1005.9 1005.4 1001.8 1006.3 1003.9 1002.4 1004.8 1014.1 1009.6 1006.9 1008.3 1001.8 DAY 30 1 7 24 1 16 20 2 8 19 27 4 MEAN QFF PRESSURE IN HPA 1021.2 1022.7 1019.1 1017.5 1014.0 1011.8 1009.7 1010.6 1018.9 1021.7 1017.5 1023.6 1017.4 MAX. QFF PRESSURE IN HPA 1033.0 1039.5 1030.4 1032.3 1022.0 1017.9 1014.4 1015.7 1022.9 1033.5 1027.7 1035.4 1039.5 DAY 9 18 31 5 19 4 10 7 24 24 7 22 MIN. QFF PRESSURE IN HPA 1008.5 1006.2 1005.7 1002.1 1006.7 1004.2 1002.7 1005.2 1014.5 1010.0 1007.2 1008.6 1002.1 DAY 30 1 7 24 1 16 20 2 8 19 27 4 PRESSURE AT HOUR 0300 UTC. MEAN QFE PRESSURE IN HPA 1023.5 1024.9 1022.3 1020.2 1016.7 1014.5 1012.2 1013.1 1021.7 1024.2 1019.8 1026.0 1019.9 MAX. QFE PRESSURE IN HPA 1035.3 1041.8 1033.1 1035.0 1025.6 1020.6 1017.2 1017.9 1026.2 1035.2 1029.4 1037.8 1041.8 DAY 9 18 1 5 18 4 13 8 23 24 6 22 MIN. QFE PRESSURE IN HPA 1011.9 1005.6 1008.9 1005.9 1009.8 1009.1 1005.7 1008.1 1016.8 1013.4 1008.6 1011.6 1005.6 DAY 30 1 7 24 1 16 20 1 27 19 26 14 MEAN QNH PRESSURE IN HPA 1021.0 1022.4 1019.8 1017.7 1014.2 1012.1 1009.8 1010.6 1019.2 1021.8 1017.3 1023.5 1017.5 MAX. QNH PRESSURE IN HPA 1032.8 1039.3 1030.6 1032.5 1023.1 1018.1 1014.7 1015.4 1023.7 1032.7 1026.9 1035.3 1039.3 DAY 9 18 1 5 18 4 13 8 23 24 6 22 MIN. QNH PRESSURE IN HPA 1009.4 1003.2 1006.4 1003.5 1007.3 1006.6 1003.3 1005.6 1014.3 1010.9 1006.1 1009.1 1003.2 DAY 30 1 7 24 1 16 20 1 27 19 26 14 MEAN QFF PRESSURE IN HPA 1021.3 1022.6 1020.0 1018.0 1014.6 1012.4 1010.1 1011.0 1019.5 1022.1 1017.6 1023.7 1017.7 MAX. QFF PRESSURE IN HPA 1033.0 1039.5 1030.8 1032.7 1023.4 1018.4 1015.1 1015.8 1024.1 1033.0 1027.2 1035.5 1039.5 DAY 9 18 1 5 18 27 13 8 23 24 6 22 MIN. QFF PRESSURE IN HPA 1009.7 1003.4 1006.7 1003.8 1007.7 1007.0 1003.6 1006.0 1014.7 1011.3 1006.4 1009.4 1003.4 DAY 30 1 7 24 1 22 20 11 27 19 26 14 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ASTARA (40709) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 38 25 N LONGITUDE 48 52 E DATA PROCESSING CENTER ELEVATION -18.0 M MEANS AND EXTREMES FOR THE YEAR 1994 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 0600 UTC. MEAN QFE PRESSURE IN HPA 1024.5 1025.8 1023.2 1020.7 1017.5 1015.1 1012.4 1013.5 1022.4 1025.4 1021.0 1026.7 1020.7 MAX. QFE PRESSURE IN HPA 1037.5 1042.4 1034.1 1035.9 1026.5 1021.3 1017.6 1018.4 1026.9 1035.9 1031.8 1038.8 1042.4 DAY 9 18 1 5 18 4 13 7 23 24 6 21 MIN. QFE PRESSURE IN HPA 1012.1 1006.2 1010.1 1007.1 1010.6 1007.9 1005.5 1007.7 1017.2 1015.2 1009.7 1012.2 1005.5 DAY 16 1 7 24 1 15 20 1 27 19 26 14 MEAN QNH PRESSURE IN HPA 1022.0 1023.3 1020.8 1018.2 1015.0 1012.6 1009.9 1011.1 1020.0 1022.9 1018.6 1024.2 1018.2 MAX. QNH PRESSURE IN HPA 1035.0 1039.9 1031.6 1033.4 1024.0 1018.8 1015.1 1015.9 1024.4 1033.4 1029.3 1036.3 1039.9 DAY 9 18 1 5 18 4 13 7 23 24 6 21 MIN. QNH PRESSURE IN HPA 1009.6 1003.8 1007.6 1004.6 1008.1 1005.4 1003.1 1005.2 1014.7 1012.7 1007.2 1009.7 1003.1 DAY 16 1 7 24 1 15 20 1 27 19 26 14 MEAN QFF PRESSURE IN HPA 1022.2 1023.5 1021.0 1018.5 1015.3 1013.0 1010.3 1011.4 1020.3 1023.2 1018.8 1024.5 1018.5 MAX. QFF PRESSURE IN HPA 1035.2 1040.1 1031.8 1033.7 1024.3 1019.1 1015.5 1016.3 1024.8 1033.7 1029.6 1036.5 1040.1 DAY 9 18 1 5 18 4 13 7 23 24 6 21 MIN. QFF PRESSURE IN HPA 1009.9 1004.0 1007.9 1005.0 1008.5 1005.8 1003.5 1005.6 1015.1 1013.1 1007.5 1010.0 1003.5 DAY 16 1 7 24 1 15 20 1 27 19 26 14 PRESSURE AT HOUR 0900 UTC. MEAN QFE PRESSURE IN HPA 1023.5 1025.4 1022.4 1020.3 1017.2 1014.7 1011.9 1012.9 1022.0 1024.9 1020.4 1025.8 1020.1 MAX. QFE PRESSURE IN HPA 1036.7 1042.3 1032.9 1035.5 1026.5 1020.9 1017.2 1018.6 1027.0 1035.7 1032.7 1039.3 1042.3 DAY 9 18 24 5 18 4 13 7 23 23 6 21 MIN. QFE PRESSURE IN HPA 1011.2 1007.6 1008.7 1006.4 1010.7 1006.2 1004.7 1007.1 1016.9 1013.6 1009.1 1011.9 1004.7 DAY 16 1 7 24 2 15 20 1 27 14 27 14 MEAN QNH PRESSURE IN HPA 1021.0 1022.9 1020.0 1017.9 1014.8 1012.2 1009.5 1010.5 1019.5 1022.4 1017.9 1023.3 1017.7 MAX. QNH PRESSURE IN HPA 1034.2 1039.8 1030.4 1033.0 1024.0 1018.4 1014.7 1016.1 1024.5 1033.2 1030.2 1036.8 1039.8 DAY 9 18 24 5 18 4 13 7 23 23 6 21 MIN. QNH PRESSURE IN HPA 1008.7 1005.1 1006.2 1004.0 1008.2 1003.8 1002.3 1004.6 1014.4 1011.1 1006.6 1009.4 1002.3 DAY 16 1 7 24 2 15 20 1 27 14 27 14 MEAN QFF PRESSURE IN HPA 1021.3 1023.2 1020.2 1018.2 1015.1 1012.6 1009.8 1010.8 1019.9 1022.7 1018.2 1023.6 1018.0 MAX. QFF PRESSURE IN HPA 1034.4 1040.0 1030.6 1033.3 1024.3 1018.7 1015.1 1016.5 1024.9 1033.5 1030.4 1037.0 1040.0 DAY 9 18 24 5 18 27 13 7 23 23 6 21 MIN. QFF PRESSURE IN HPA 1009.0 1005.4 1006.5 1004.3 1008.6 1004.1 1002.6 1005.0 1014.8 1011.5 1006.9 1009.7 1002.6 DAY 16 1 7 24 2 15 20 1 27 14 27 14 PRESSURE AT HOUR 1200 UTC. MEAN QFE PRESSURE IN HPA 1022.3 1024.8 1021.2 1019.4 1016.4 1013.7 1011.1 1012.0 1021.2 1023.9 1019.6 1025.1 1019.2 MAX. QFE PRESSURE IN HPA 1036.0 1040.2 1031.9 1034.6 1025.6 1020.3 1016.7 1017.9 1025.6 1035.7 1032.7 1038.5 1040.2 DAY 9 18 24 4 18 27 13 6 23 23 6 21 MIN. QFE PRESSURE IN HPA 1010.1 1011.1 1010.2 1006.6 1008.4 1004.3 1004.4 1005.8 1015.2 1011.7 1008.9 1009.4 1004.3 DAY 16 1 7 24 12 15 20 10 27 14 27 3 MEAN QNH PRESSURE IN HPA 1019.9 1022.3 1018.7 1017.0 1013.9 1011.2 1008.7 1009.6 1018.7 1021.4 1017.1 1022.6 1016.8 MAX. QNH PRESSURE IN HPA 1033.5 1037.7 1029.4 1032.1 1023.1 1017.8 1014.2 1015.4 1023.1 1033.2 1030.2 1036.0 1037.7 DAY 9 18 24 4 18 27 13 6 23 23 6 21 MIN. QNH PRESSURE IN HPA 1007.6 1008.6 1007.7 1004.2 1005.9 1001.9 1002.0 1003.4 1012.7 1009.2 1006.4 1006.9 1001.9 DAY 16 1 7 24 12 15 20 10 27 14 27 3 MEAN QFF PRESSURE IN HPA 1020.1 1022.5 1018.7 1017.3 1014.2 1011.6 1009.0 1009.9 1019.1 1021.7 1017.4 1022.8 1017.0 MAX. QFF PRESSURE IN HPA 1033.7 1037.9 1029.6 1032.3 1023.4 1018.1 1014.6 1015.8 1023.5 1033.5 1030.4 1036.2 1037.9 DAY 9 18 24 4 18 27 13 6 23 23 6 21 MIN. QFF PRESSURE IN HPA 1007.9 1008.9 1008.0 1004.5 1006.3 1002.2 1002.3 1003.7 1013.1 1009.6 1006.7 1007.2 1002.2 DAY 16 1 7 24 12 15 20 10 27 14 27 3 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ASTARA (40709) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 38 25 N LONGITUDE 48 52 E DATA PROCESSING CENTER ELEVATION -18.0 M MEANS AND EXTREMES FOR THE YEAR 1994 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 1500 UTC. MEAN QFE PRESSURE IN HPA 1022.8 1025.5 1021.2 1019.0 1016.2 1013.2 1011.0 1012.0 1020.8 1024.0 1020.0 1025.9 1019.3 MAX. QFE PRESSURE IN HPA 1035.7 1040.7 1031.4 1035.2 1025.6 1019.2 1016.1 1017.9 1025.6 1036.4 1033.5 1038.8 1040.7 DAY 9 17 24 4 18 4 9 6 13 23 6 21 MIN. QFE PRESSURE IN HPA 1010.9 1013.8 1012.2 1005.7 1007.7 1002.5 1004.6 1005.6 1015.6 1012.1 1009.3 1009.9 1002.5 DAY 16 1 7 24 12 15 20 10 7 14 26 3 MEAN QNH PRESSURE IN HPA 1020.3 1023.0 1018.7 1016.6 1013.7 1010.7 1008.5 1009.5 1018.4 1021.5 1017.5 1023.4 1016.8 MAX. QNH PRESSURE IN HPA 1033.2 1038.2 1028.9 1032.7 1023.1 1016.7 1013.6 1015.4 1023.1 1033.9 1031.0 1036.3 1038.2 DAY 9 17 24 4 18 4 9 6 13 23 6 21 MIN. QNH PRESSURE IN HPA 1008.4 1011.3 1009.7 1003.3 1005.2 1000.1 1002.2 1003.2 1013.1 1009.6 1006.8 1007.4 1000.1 DAY 16 1 7 24 12 15 20 10 7 14 26 3 MEAN QFF PRESSURE IN HPA 1020.6 1023.2 1019.0 1016.9 1014.0 1011.1 1008.9 1009.9 1018.7 1021.8 1017.8 1023.6 1017.1 MAX. QFF PRESSURE IN HPA 1033.4 1038.4 1029.1 1032.9 1023.4 1017.1 1014.0 1015.8 1023.5 1034.2 1031.2 1036.5 1038.4 DAY 9 17 24 4 18 27 9 6 13 23 6 21 MIN. QFF PRESSURE IN HPA 1008.7 1011.6 1010.0 1003.7 1005.6 1000.4 1002.5 1003.5 1013.5 1010.0 1007.1 1007.7 1000.4 DAY 16 1 7 24 12 15 20 10 7 14 26 3 PRESSURE AT HOUR 1800 UTC. MEAN QFE PRESSURE IN HPA 1023.3 1026.4 1021.9 1019.8 1016.9 1014.2 1011.9 1013.1 1021.5 1024.3 1020.3 1026.5 1020.0 MAX. QFE PRESSURE IN HPA 1035.1 1042.4 1031.9 1035.9 1025.6 1021.2 1017.6 1018.6 1026.3 1036.7 1033.8 1039.0 1042.4 DAY 9 17 22 4 18 3 9 6 13 23 6 21 MIN. QFE PRESSURE IN HPA 1012.0 1015.6 1011.6 1006.2 1010.1 1003.2 1004.2 1006.3 1015.4 1013.1 1009.7 1009.9 1003.2 DAY 16 1 5 23 12 15 19 10 27 18 26 3 MEAN QNH PRESSURE IN HPA 1020.8 1023.9 1019.5 1017.3 1014.5 1011.7 1009.4 1010.6 1019.0 1021.9 1017.8 1024.0 1017.5 MAX. QNH PRESSURE IN HPA 1032.6 1039.9 1029.4 1033.4 1023.1 1018.7 1015.1 1016.1 1023.8 1034.2 1031.3 1036.5 1039.9 DAY 9 17 22 4 18 3 9 6 13 23 6 21 MIN. QNH PRESSURE IN HPA 1009.5 1013.1 1009.1 1003.8 1007.6 1000.8 1001.8 1003.9 1012.9 1010.6 1007.2 1007.4 1000.8 DAY 16 1 5 23 12 15 19 10 27 18 26 3 MEAN QFF PRESSURE IN HPA 1021.0 1024.1 1019.7 1017.6 1014.8 1012.1 1009.8 1011.0 1019.4 1022.2 1018.1 1024.3 1017.8 MAX. QFF PRESSURE IN HPA 1032.8 1040.1 1029.7 1033.6 1023.4 1019.0 1015.5 1016.5 1024.2 1034.5 1031.5 1036.7 1040.1 DAY 9 17 22 4 18 3 9 6 13 23 6 21 MIN. QFF PRESSURE IN HPA 1009.8 1013.4 1009.4 1004.1 1008.0 1001.1 1002.2 1004.2 1013.3 1011.0 1007.5 1007.7 1001.1 DAY 16 1 5 23 12 15 19 10 27 18 26 3 PRESSURE AT HOUR 2100 UTC. MEAN QFE PRESSURE IN HPA 1023.1 1026.3 1021.8 1019.3 1016.7 1014.1 1011.9 1013.2 1021.4 1024.0 1019.8 1026.2 1019.8 MAX. QFE PRESSURE IN HPA 1034.3 1042.5 1032.5 1035.9 1025.1 1021.2 1017.6 1018.2 1025.8 1036.2 1032.2 1038.1 1042.5 DAY 8 17 30 4 17 3 9 6 13 23 6 21 MIN. QFE PRESSURE IN HPA 1011.0 1014.8 1010.4 1004.2 1009.6 1003.2 1004.8 1006.3 1015.4 1012.1 1009.4 1009.9 1003.2 DAY 31 4 6 23 28 15 19 10 27 18 26 3 MEAN QNH PRESSURE IN HPA 1020.6 1023.8 1019.3 1016.9 1014.2 1011.7 1009.5 1010.7 1018.9 1021.6 1017.3 1023.7 1017.3 MAX. QNH PRESSURE IN HPA 1031.8 1040.0 1030.0 1033.4 1022.6 1018.7 1015.1 1015.7 1023.3 1033.7 1029.7 1035.6 1040.0 DAY 8 17 30 4 17 3 9 6 13 23 6 21 MIN. QNH PRESSURE IN HPA 1008.5 1012.3 1007.9 1001.8 1007.1 1000.8 1002.4 1003.9 1012.9 1009.6 1006.9 1007.4 1000.8 DAY 31 4 6 23 28 15 19 10 27 18 26 3 MEAN QFF PRESSURE IN HPA 1020.9 1024.0 1019.5 1017.2 1014.5 1012.0 1009.9 1011.1 1019.2 1021.9 1017.6 1023.9 1017.6 MAX. QFF PRESSURE IN HPA 1032.0 1040.2 1030.2 1033.6 1022.9 1019.0 1015.5 1016.1 1023.7 1034.0 1029.9 1035.8 1040.2 DAY 8 17 30 4 17 3 9 31 13 23 6 21 MIN. QFF PRESSURE IN HPA 1008.8 1012.6 1008.2 1002.1 1007.5 1001.1 1002.7 1004.2 1013.3 1010.0 1007.2 1007.7 1001.1 DAY 31 4 6 23 28 15 19 10 27 18 26 3 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ASTARA (40709) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 38 25 N LONGITUDE 48 52 E DATA PROCESSING CENTER ELEVATION -18.0 M MEANS AND EXTREMES FOR THE YEAR 1995 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AIR TEMPERATURE (C) 6.2 7.0 8.7 14.5 19.3 23.4 26.2 25.4 22.2 15.6 13.5 6.7 15.7 MINIMUN AIR TEMPERATURE (C) 3.5 4.5 5.9 11.0 14.6 18.5 21.1 21.5 18.0 12.5 9.0 3.2 11.9 DAYS WITH MINIMUM TEMP. >=21 0 0 0 0 0 1 20 23 4 0 0 0 48 DAYS WITH MINIMUM TEMP. <=-4 0 0 0 0 0 0 0 0 0 0 0 0 0 DAYS WITH FREEZING MIN.<= 0 3 0 0 0 0 0 0 0 0 0 0 5 8 TEMPERATURE RECORDS LOWEST(C) -1.0 1.0 3.0 6.4 11.2 15.4 19.0 18.0 13.0 8.0 3.2 -3.0 -3.0 DAY 23 28 1 6 11 1 1 21 30 17 30 19 MAXIMUM AIR TEMPERATURE (C) 9.8 9.7 11.3 18.6 23.3 27.7 30.8 29.5 26.5 19.0 18.0 10.9 19.6 DAYS WITH MAXIMUM TEMP. >=30 0 0 0 0 1 8 23 14 4 0 0 0 50 DAYS WITH MAXIMUM TEMP. <= 0 0 0 0 0 0 0 0 0 0 0 0 0 0 TEMPERATURE RECORDS HIGHEST(C) 19.8 17.4 17.0 29.6 31.0 32.8 35.0 33.0 30.6 26.0 27.2 21.0 35.0 DAY 3 10 31 19 23 26 16 3 11 3 8 22 DIF. BETWEEN (MAX.-MIN.) (C) 6.3 5.2 5.4 7.6 8.7 9.2 9.7 8.0 8.5 6.5 9.0 7.7 7.7 MEAN DAILY TEMP. (MDT) (C) 6.6 7.1 8.6 14.8 19.0 23.1 25.9 25.5 22.3 15.7 13.5 7.0 15.8 COOLING DEG. DAYS(BASE 21 0C) 0.0 0.0 0.0 1.9 7.5 67.9 153.2 138.4 64.6 1.1 0.2 0.0 434.8 HEATING DEG. DAYS(BASE 18 0C) 352.0 305.6 291.6 106.5 18.2 0.0 0.0 0.0 3.1 81.6 140.2 340.1 1638.9 DEWPOINT (MEAN C) 3.8 4.7 6.3 10.2 15.0 18.7 18.2 20.3 18.3 12.8 9.6 2.7 11.7 MIXING RATIO (G/KG) 4.97 5.28 5.93 7.83 10.75 13.73 13.30 15.10 13.41 9.28 7.71 4.60 9.32 VAPOUR PRESSURE (HPA) 8.12 8.62 9.64 12.62 17.30 21.85 21.14 23.98 21.42 15.03 12.46 7.54 14.98 SATURATION DEF. (HPA) 1.51 1.51 1.73 4.42 5.61 7.54 13.50 9.04 6.12 3.04 3.59 2.55 5.01 RELATIVE HUMIDITY (MEAN %) 86 86 86 78 78 77 64 75 80 85 80 78 79 RELATIVE HUMIDITY (MAX. %) 95 94 94 91 92 92 81 90 94 94 93 90 92 RELATIVE HUMIDITY (MIN. %) 73 75 75 62 62 61 47 59 65 70 61 62 64 RELATIVE HUMIDITY (MEAN% 03UTC) 91 92 89 84 87 85 74 83 90 91 87 83 86 RELATIVE HUMIDITY (MEAN% 09UTC) 77 77 79 72 67 66 50 63 69 73 67 66 69 RELATIVE HUMIDITY (MEAN% 15UTC) 87 86 85 76 72 73 58 72 79 88 84 83 79 RH=0 => RELATIVE HUMIDITY < 0.5% AMOUNT OF PRECIPITATION MM. 65.1 52.8 43.2 49.1 26.0 40.9 2.0 127.4 252.2 492.1 71.2 80.2 1302.2 DAYS WITH PRECIPITATION >=10 3 2 2 2 0 1 0 3 4 7 1 3 28 DAYS WITH PRECIPITATION >= 5 5 3 3 5 3 4 0 3 6 8 1 6 47 DAYS WITH PRECIPITATION >= 1 7 7 7 6 7 5 1 5 8 10 2 9 74 DAYS WITH PRECIPITATION 10 10 12 11 9 12 2 7 10 13 5 14 115 GREATEST DAILY PRECIPITATION 18.5 20.0 14.3 17.4 6.1 18.0 2.0 64.0 83.0 161.0 66.3 19.0 161.0 DAY 20 5 14 24 6 8 4 14 20 24 11 17 DAY WITH THUNDER STORM 0 0 0 5 5 8 1 0 4 0 0 0 23 DAYS WITH SNOW OR SLEET 1 0 0 0 0 0 0 0 0 0 0 2 3 DAYS WITH DUST 0 0 0 0 0 0 1 0 0 0 0 0 1 WIND DIRECTION (PREVAILING) 315 135 135 135 135 135 135 135 315 315 135 315 135 PREVAILING WIND SPEED(KNOTS) 5.7 5.3 5.8 7.8 6.6 9.2 6.8 6.9 6.8 6.3 8.4 6.6 7.2 PREVAILING WIND PERCENT 6.0 10.3 10.5 13.3 16.5 26.7 13.5 9.7 10.0 9.7 6.3 9.7 10.2 CALMS PERCENT OF WIND 78.6 76.3 70.2 61.3 71.0 60.8 63.3 67.7 66.3 77.0 73.8 74.6 70.1 NO. OF WIND OBSERVATION 248 224 248 240 248 240 245 248 240 248 240 248 2917 VECTOR WIND DIRECTION (MEAN) 2 87 140 169 122 143 94 92 26 343 270 334 109 VECTOR WIND MAGNITUDE(KNOTS) 0.2 0.4 0.4 1.0 1.3 2.4 1.3 1.2 0.7 0.5 0.2 1.0 0.5 WIND STEADINESES (MEAN %) 15.4 33.3 21.1 33.3 68.4 75.0 52.0 57.1 33.3 33.3 9.1 62.5 25.0 WIND SPEED (MEAN KNOTS) 1.3 1.2 1.9 3.0 1.9 3.2 2.5 2.1 2.1 1.5 2.2 1.6 2.0 FASTEST WIND DIRECTION 180 340 180 240 150 360 180 150 300 150 210 220 240 FASTEST WIND SPEED (KNOTS) 17 14 16 49 14 17 16 14 16 14 23 19 49 DAY 26 8 27 19 31 29 16 3 26 13 24 22 DAYS WITH SKY CLEAR (0-2)/8 6 4 8 5 15 16 15 20 14 9 15 13 140 DAYS WITH P.CLOUDY (3-6)/8 9 7 6 13 7 9 12 3 9 6 10 6 97 DAYS WITH CLOUDY (7-8)/8 16 17 17 12 9 5 4 8 7 16 5 12 128 DAYS WITH VISIBILITY =< 2 KM 10 5 6 6 0 1 0 3 4 7 0 1 43 DURATION OF SUNSHINE HOURS 94.0 84.9 116.6 58.8 ****** ****** 271.4 227.3 206.7 110.7 176.4 123.3 ****** ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ASTARA (40709) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 38 25 N LONGITUDE 48 52 E DATA PROCESSING CENTER ELEVATION -18.0 M MEANS AND EXTREMES FOR THE YEAR 1995 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL MEAN QFE PRESSURE IN HPA 1024.3 1024.1 1021.5 1016.2 1018.4 1012.4 1010.2 1012.4 1015.8 1024.1 1019.7 1026.6 1018.8 MAX. QFE PRESSURE IN HPA 1039.8 1034.4 1033.4 1030.7 1025.8 1019.9 1016.8 1020.1 1027.8 1040.4 1034.0 1040.0 1040.4 DAY-HOUR 6-15 12- 6 2- 9 6-21 28- 3 1- 6 23- 9 14- 3 26-18 17- 9 15- 6 10- 6 MIN. QFE PRESSURE IN HPA 1012.0 1009.3 1003.5 1000.6 1010.4 994.7 1001.7 1004.6 1007.8 1006.5 1006.9 1013.1 994.7 DAY-HOUR 1-12 8-12 25-15 19-12 2- 6 29-15 15-21 22-15 4-15 3-15 8-12 21-21 MEAN QNH PRESSURE IN HPA 1021.8 1021.6 1019.0 1013.8 1015.9 1009.9 1007.8 1009.9 1013.4 1021.7 1017.2 1024.2 1016.3 MAX. QNH PRESSURE IN HPA 1037.3 1031.9 1030.9 1028.2 1023.3 1017.4 1014.3 1017.6 1025.3 1037.9 1031.5 1037.5 1037.9 DAY-HOUR 6-15 12- 6 2- 9 6-21 28- 3 1- 6 23- 9 14- 3 26-18 17- 9 15- 6 10- 6 MIN. QNH PRESSURE IN HPA 1009.5 1006.8 1001.1 998.2 1007.9 992.3 999.3 1002.2 1005.3 1004.1 1004.4 1010.6 992.3 DAY-HOUR 1-12 8-12 25-15 19-12 2- 6 29-15 15-21 22-15 4-15 3-15 8-12 21-21 MEAN QFF PRESSURE IN HPA 1022.1 1021.9 1019.2 1014.1 1016.2 1010.3 1008.2 1010.3 1013.7 1022.0 1017.5 1024.4 1016.7 MAX. QFF PRESSURE IN HPA 1037.5 1032.1 1031.1 1028.5 1023.7 1017.8 1014.7 1018.0 1025.6 1038.2 1031.8 1037.7 1038.2 DAY-HOUR 6-21 12- 6 2- 9 6-21 28- 3 1- 6 23- 9 14- 3 26-18 17- 9 15- 6 10- 6 MIN. QFF PRESSURE IN HPA 1009.8 1007.1 1001.3 998.5 1008.3 992.7 999.7 1002.5 1005.7 1004.4 1004.8 1010.9 992.7 DAY-HOUR 1-12 8-12 25-15 19-12 2- 6 29-15 15-21 22-15 4-15 3-15 8-12 21-21 PRESSURE AT HOUR 0000 UTC. MEAN QFE PRESSURE IN HPA 1023.9 1023.9 1020.9 1015.5 1017.9 1012.5 1010.2 1012.4 1015.7 1023.7 1019.5 1026.8 1018.6 MAX. QFE PRESSURE IN HPA 1038.9 1032.5 1032.3 1029.4 1025.3 1019.0 1016.6 1019.0 1026.8 1037.4 1030.2 1039.0 1039.0 DAY 6 12 3 7 28 1 23 14 27 17 15 10 MIN. QFE PRESSURE IN HPA 1012.1 1013.8 1009.2 1004.4 1010.5 999.5 1002.6 1005.1 1009.1 1011.1 1008.6 1013.1 999.5 DAY 12 8 26 19 7 29 16 12 5 4 8 22 MEAN QNH PRESSURE IN HPA 1021.4 1021.5 1018.4 1013.1 1015.4 1010.0 1007.7 1010.0 1013.3 1021.2 1017.1 1024.3 1016.1 MAX. QNH PRESSURE IN HPA 1036.4 1030.0 1029.8 1026.9 1022.8 1016.5 1014.1 1016.5 1024.3 1034.9 1027.7 1036.5 1036.5 DAY 6 12 3 7 28 1 23 14 27 17 15 10 MIN. QNH PRESSURE IN HPA 1009.6 1011.3 1006.7 1002.0 1008.0 997.1 1000.2 1002.7 1006.6 1008.6 1006.1 1010.6 997.1 DAY 12 8 26 19 7 29 16 12 5 4 8 22 MEAN QFF PRESSURE IN HPA 1021.7 1021.7 1018.7 1013.4 1015.8 1010.4 1008.1 1010.4 1013.6 1021.5 1017.4 1024.5 1016.4 MAX. QFF PRESSURE IN HPA 1036.6 1030.3 1030.0 1027.2 1023.2 1016.9 1014.5 1016.9 1024.6 1035.2 1028.0 1036.7 1036.7 DAY 6 12 3 7 28 1 23 14 27 17 15 10 MIN. QFF PRESSURE IN HPA 1009.9 1011.6 1007.0 1002.3 1008.4 997.5 1000.6 1003.1 1007.0 1009.0 1006.5 1010.9 997.5 DAY 12 8 26 19 7 29 16 12 5 4 8 22 PRESSURE AT HOUR 0300 UTC. MEAN QFE PRESSURE IN HPA 1024.2 1024.3 1021.4 1016.4 1018.5 1012.8 1010.8 1013.0 1016.1 1024.0 1019.8 1026.7 1019.0 MAX. QFE PRESSURE IN HPA 1039.6 1033.5 1031.7 1029.1 1025.8 1019.4 1016.7 1020.1 1027.0 1038.4 1030.9 1039.4 1039.6 DAY 6 12 3 7 28 1 23 14 27 17 15 10 MIN. QFE PRESSURE IN HPA 1012.1 1012.8 1009.6 1003.8 1010.5 999.5 1004.5 1006.0 1009.5 1013.2 1009.1 1013.1 999.5 DAY 12 8 25 19 7 29 16 12 5 3 8 22 MEAN QNH PRESSURE IN HPA 1021.8 1021.8 1019.0 1014.0 1016.0 1010.4 1008.3 1010.6 1013.6 1021.6 1017.3 1024.2 1016.5 MAX. QNH PRESSURE IN HPA 1037.1 1031.0 1029.2 1026.6 1023.3 1016.9 1014.2 1017.6 1024.5 1035.9 1028.4 1036.9 1037.1 DAY 6 12 3 7 28 1 23 14 27 17 15 10 MIN. QNH PRESSURE IN HPA 1009.6 1010.3 1007.1 1001.4 1008.0 997.1 1002.1 1003.6 1007.0 1010.7 1006.6 1010.6 997.1 DAY 12 8 25 19 7 29 16 12 5 3 8 22 MEAN QFF PRESSURE IN HPA 1022.0 1022.0 1019.2 1014.3 1016.3 1010.7 1008.7 1011.0 1014.0 1021.9 1017.6 1024.4 1016.8 MAX. QFF PRESSURE IN HPA 1037.3 1031.2 1029.4 1026.9 1023.7 1017.3 1014.6 1018.0 1024.8 1036.2 1028.7 1037.1 1037.3 DAY 6 12 3 7 28 1 23 14 27 17 15 10 MIN. QFF PRESSURE IN HPA 1009.9 1010.6 1007.4 1001.7 1008.4 997.5 1002.5 1004.0 1007.4 1011.1 1007.0 1010.9 997.5 DAY 12 8 25 19 7 29 16 12 5 3 8 22 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ASTARA (40709) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 38 25 N LONGITUDE 48 52 E DATA PROCESSING CENTER ELEVATION -18.0 M MEANS AND EXTREMES FOR THE YEAR 1995 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 0600 UTC. MEAN QFE PRESSURE IN HPA 1025.3 1025.2 1022.5 1017.2 1019.1 1013.2 1010.9 1013.4 1016.8 1025.2 1020.6 1027.5 1019.7 MAX. QFE PRESSURE IN HPA 1039.7 1034.4 1033.0 1028.3 1025.6 1019.9 1016.6 1020.1 1027.6 1040.2 1034.0 1040.0 1040.2 DAY 6 12 2 7 28 1 23 14 27 17 15 10 MIN. QFE PRESSURE IN HPA 1014.2 1012.1 1008.1 1003.4 1010.4 999.1 1004.9 1007.7 1010.0 1012.8 1009.6 1014.3 999.1 DAY 11 8 25 19 2 29 16 12 5 3 8 22 MEAN QNH PRESSURE IN HPA 1022.8 1022.7 1020.0 1014.8 1016.6 1010.7 1008.5 1010.9 1014.3 1022.7 1018.1 1025.0 1017.3 MAX. QNH PRESSURE IN HPA 1037.2 1031.9 1030.5 1025.8 1023.1 1017.4 1014.1 1017.6 1025.1 1037.7 1031.5 1037.5 1037.7 DAY 6 12 2 7 28 1 23 14 27 17 15 10 MIN. QNH PRESSURE IN HPA 1011.7 1009.6 1005.6 1001.0 1007.9 996.7 1002.5 1005.2 1007.5 1010.3 1007.1 1011.8 996.7 DAY 11 8 25 19 2 29 16 12 5 3 8 22 MEAN QFF PRESSURE IN HPA 1023.1 1022.9 1020.3 1015.1 1016.9 1011.1 1008.9 1011.3 1014.7 1023.0 1018.4 1025.2 1017.6 MAX. QFF PRESSURE IN HPA 1037.4 1032.1 1030.7 1026.1 1023.5 1017.8 1014.5 1018.0 1025.4 1038.0 1031.8 1037.7 1038.0 DAY 6 12 2 7 28 1 23 14 27 17 15 10 MIN. QFF PRESSURE IN HPA 1012.0 1009.9 1005.9 1001.3 1008.3 997.1 1002.9 1005.7 1007.9 1010.7 1007.5 1012.1 997.1 DAY 11 8 25 19 2 29 16 12 5 3 8 22 PRESSURE AT HOUR 0900 UTC. MEAN QFE PRESSURE IN HPA 1024.4 1024.5 1022.0 1017.1 1018.8 1012.8 1010.5 1012.8 1016.2 1024.6 1019.4 1026.6 1019.1 MAX. QFE PRESSURE IN HPA 1038.8 1033.6 1033.4 1026.4 1024.7 1019.6 1016.8 1019.8 1026.7 1040.4 1033.4 1039.5 1040.4 DAY 6 12 2 13 28 1 23 24 27 17 15 10 MIN. QFE PRESSURE IN HPA 1013.3 1010.6 1005.2 1003.4 1010.5 997.6 1003.8 1007.0 1009.6 1010.0 1008.8 1014.0 997.6 DAY 11 8 25 19 7 29 16 22 17 3 8 22 MEAN QNH PRESSURE IN HPA 1021.9 1022.0 1019.5 1014.6 1016.3 1010.4 1008.0 1010.3 1013.7 1022.1 1017.0 1024.1 1016.7 MAX. QNH PRESSURE IN HPA 1036.3 1031.1 1030.9 1023.9 1022.2 1017.1 1014.3 1017.3 1024.2 1037.9 1030.9 1037.0 1037.9 DAY 6 12 2 13 28 1 23 24 27 17 15 10 MIN. QNH PRESSURE IN HPA 1010.8 1008.1 1002.8 1001.0 1008.0 995.2 1001.4 1004.5 1007.1 1007.5 1006.3 1011.5 995.2 DAY 11 8 25 19 7 29 16 22 17 3 8 22 MEAN QFF PRESSURE IN HPA 1022.2 1022.2 1019.8 1014.9 1016.7 1010.7 1008.4 1010.7 1014.1 1022.4 1017.2 1024.4 1017.0 MAX. QFF PRESSURE IN HPA 1036.5 1031.3 1031.1 1024.2 1022.6 1017.5 1014.7 1017.7 1024.5 1038.2 1031.2 1037.2 1038.2 DAY 6 12 2 13 28 1 23 24 27 17 15 10 MIN. QFF PRESSURE IN HPA 1011.1 1008.4 1003.0 1001.3 1008.4 995.6 1001.8 1004.9 1007.5 1007.9 1006.7 1011.8 995.6 DAY 11 8 25 19 7 29 16 22 17 3 8 22 PRESSURE AT HOUR 1200 UTC. MEAN QFE PRESSURE IN HPA 1023.6 1023.5 1021.0 1016.0 1018.1 1011.9 1009.7 1011.6 1015.2 1023.7 1018.7 1025.7 1018.2 MAX. QFE PRESSURE IN HPA 1038.8 1031.7 1032.2 1026.4 1023.4 1018.0 1014.9 1018.8 1026.3 1039.6 1032.6 1038.0 1039.6 DAY 6 12 2 6 28 1 23 24 26 17 15 9 MIN. QFE PRESSURE IN HPA 1012.0 1009.3 1004.0 1000.6 1010.5 995.2 1003.8 1005.0 1008.6 1007.8 1006.9 1015.1 995.2 DAY 1 8 25 19 7 29 15 22 4 3 8 26 MEAN QNH PRESSURE IN HPA 1021.1 1021.0 1018.5 1013.6 1015.6 1009.5 1007.2 1009.2 1012.8 1021.3 1016.3 1023.2 1015.8 MAX. QNH PRESSURE IN HPA 1036.3 1029.2 1029.7 1023.9 1020.9 1015.5 1012.4 1016.3 1023.8 1037.1 1030.1 1035.5 1037.1 DAY 6 12 2 6 28 1 23 24 26 17 15 9 MIN. QNH PRESSURE IN HPA 1009.5 1006.8 1001.6 998.2 1008.0 992.8 1001.4 1002.6 1006.1 1005.3 1004.4 1012.6 992.8 DAY 1 8 25 19 7 29 15 22 4 3 8 26 MEAN QFF PRESSURE IN HPA 1021.3 1021.3 1018.8 1013.9 1016.0 1009.8 1007.5 1009.5 1013.1 1021.6 1016.6 1023.5 1016.1 MAX. QFF PRESSURE IN HPA 1036.5 1029.4 1030.0 1024.2 1021.3 1015.9 1012.8 1016.7 1024.1 1037.4 1030.4 1035.7 1037.4 DAY 6 12 2 6 28 1 23 24 26 17 15 9 MIN. QFF PRESSURE IN HPA 1009.8 1007.1 1001.8 998.5 1008.4 993.2 1001.8 1002.9 1006.5 1005.7 1004.8 1012.9 993.2 DAY 1 8 25 19 7 29 15 22 4 3 8 26 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ASTARA (40709) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 38 25 N LONGITUDE 48 52 E DATA PROCESSING CENTER ELEVATION -18.0 M MEANS AND EXTREMES FOR THE YEAR 1995 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 1500 UTC. MEAN QFE PRESSURE IN HPA 1024.2 1023.7 1021.0 1015.7 1017.8 1011.5 1009.3 1011.3 1015.2 1023.8 1019.5 1026.4 1018.3 MAX. QFE PRESSURE IN HPA 1039.8 1031.3 1032.9 1028.1 1023.4 1017.7 1014.5 1018.6 1026.7 1039.2 1032.7 1038.4 1039.8 DAY 6 17 2 6 27 1 23 24 21 17 15 9 MIN. QFE PRESSURE IN HPA 1012.8 1009.5 1003.5 1001.0 1010.5 994.7 1002.6 1004.6 1007.8 1006.5 1008.6 1015.2 994.7 DAY 1 8 25 19 7 29 15 22 4 3 8 26 MEAN QNH PRESSURE IN HPA 1021.7 1021.3 1018.6 1013.3 1015.3 1009.0 1006.8 1008.8 1012.7 1021.3 1017.1 1024.0 1015.8 MAX. QNH PRESSURE IN HPA 1037.3 1028.8 1030.4 1025.6 1020.9 1015.2 1012.0 1016.1 1024.2 1036.7 1030.2 1035.9 1037.3 DAY 6 17 2 6 27 1 23 24 21 17 15 9 MIN. QNH PRESSURE IN HPA 1010.3 1007.0 1001.1 998.6 1008.0 992.3 1000.2 1002.2 1005.3 1004.1 1006.1 1012.7 992.3 DAY 1 8 25 19 7 29 15 22 4 3 8 26 MEAN QFF PRESSURE IN HPA 1022.0 1021.5 1018.8 1013.6 1015.7 1009.4 1007.2 1009.2 1013.1 1021.6 1017.3 1024.2 1016.1 MAX. QFF PRESSURE IN HPA 1037.5 1029.0 1030.6 1025.9 1021.3 1015.6 1012.4 1016.5 1024.5 1036.9 1030.5 1036.1 1037.5 DAY 6 17 2 6 27 1 23 24 21 17 15 9 MIN. QFF PRESSURE IN HPA 1010.6 1007.3 1001.3 998.9 1008.4 992.7 1000.6 1002.5 1005.7 1004.4 1006.5 1013.0 992.7 DAY 1 8 25 19 7 29 15 22 4 3 8 26 PRESSURE AT HOUR 1800 UTC. MEAN QFE PRESSURE IN HPA 1024.6 1024.1 1021.7 1016.2 1018.5 1012.2 1010.3 1012.3 1015.9 1024.3 1020.0 1026.9 1018.9 MAX. QFE PRESSURE IN HPA 1039.8 1031.3 1033.2 1030.4 1024.6 1018.6 1015.5 1018.8 1027.8 1038.3 1032.1 1039.1 1039.8 DAY 6 17 2 6 27 8 22 19 26 17 15 9 MIN. QFE PRESSURE IN HPA 1012.9 1010.4 1006.8 1002.6 1011.8 996.9 1002.5 1006.0 1008.6 1007.0 1010.2 1014.6 996.9 DAY 11 8 25 19 6 29 15 7 4 3 7 21 MEAN QNH PRESSURE IN HPA 1022.2 1021.7 1019.2 1013.8 1016.1 1009.7 1007.9 1009.8 1013.4 1021.8 1017.5 1024.4 1016.4 MAX. QNH PRESSURE IN HPA 1037.3 1028.8 1030.7 1027.9 1022.1 1016.1 1013.0 1016.3 1025.3 1035.8 1029.6 1036.6 1037.3 DAY 6 17 2 6 27 8 22 19 26 17 15 9 MIN. QNH PRESSURE IN HPA 1010.4 1007.9 1004.4 1000.2 1009.3 994.5 1000.1 1003.6 1006.1 1004.5 1007.7 1012.1 994.5 DAY 11 8 25 19 6 29 15 7 4 3 7 21 MEAN QFF PRESSURE IN HPA 1022.4 1021.9 1019.5 1014.1 1016.4 1010.1 1008.3 1010.3 1013.8 1022.1 1017.8 1024.6 1016.8 MAX. QFF PRESSURE IN HPA 1037.5 1029.0 1031.0 1028.2 1022.5 1016.5 1013.4 1016.7 1025.6 1036.1 1029.9 1036.8 1037.5 DAY 6 17 2 6 27 8 22 19 26 17 15 9 MIN. QFF PRESSURE IN HPA 1010.7 1008.2 1004.6 1000.5 1009.7 994.9 1000.5 1004.0 1006.6 1004.9 1008.1 1012.4 994.9 DAY 11 8 25 19 6 29 15 7 4 3 7 21 PRESSURE AT HOUR 2100 UTC. MEAN QFE PRESSURE IN HPA 1024.3 1023.8 1021.4 1015.9 1018.3 1012.2 1010.3 1012.5 1015.9 1024.0 1019.9 1026.7 1018.8 MAX. QFE PRESSURE IN HPA 1039.8 1031.6 1032.9 1030.7 1025.4 1018.6 1016.0 1019.2 1026.9 1037.5 1031.2 1039.0 1039.8 DAY 6 11 2 6 25 8 22 19 26 17 14 9 MIN. QFE PRESSURE IN HPA 1012.4 1013.1 1007.5 1005.8 1010.5 998.6 1001.7 1007.3 1009.1 1009.0 1009.8 1013.1 998.6 DAY 11 8 25 19 6 29 15 7 4 3 7 21 MEAN QNH PRESSURE IN HPA 1021.8 1021.3 1018.9 1013.4 1015.9 1009.7 1007.8 1010.1 1013.4 1021.5 1017.5 1024.2 1016.3 MAX. QNH PRESSURE IN HPA 1037.3 1029.1 1030.4 1028.2 1022.9 1016.1 1013.5 1016.7 1024.4 1035.0 1028.7 1036.5 1037.3 DAY 6 11 2 6 25 8 22 19 26 17 14 9 MIN. QNH PRESSURE IN HPA 1009.9 1010.6 1005.0 1003.4 1008.0 996.2 999.3 1004.8 1006.6 1006.5 1007.3 1010.6 996.2 DAY 11 8 25 19 6 29 15 7 4 3 7 21 MEAN QFF PRESSURE IN HPA 1022.1 1021.6 1019.1 1013.7 1016.2 1010.1 1008.2 1010.5 1013.8 1021.8 1018.0 1024.4 1016.6 MAX. QFF PRESSURE IN HPA 1037.5 1029.4 1030.7 1028.5 1023.3 1016.5 1013.9 1017.1 1024.7 1035.3 1029.0 1036.7 1037.5 DAY 6 11 2 6 25 8 22 19 26 17 14 9 MIN. QFF PRESSURE IN HPA 1010.2 1010.9 1005.3 1003.7 1008.4 996.6 999.7 1005.3 1007.0 1006.9 1007.7 1010.9 996.6 DAY 11 8 25 19 6 29 15 11 4 3 7 21 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ASTARA (40709) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 38 25 N LONGITUDE 48 52 E DATA PROCESSING CENTER ELEVATION -18.0 M MEANS AND EXTREMES FOR THE YEAR 1996 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AIR TEMPERATURE (C) 4.8 5.6 6.8 10.9 19.4 21.9 26.0 25.4 22.0 16.9 11.7 10.6 15.2 MINIMUN AIR TEMPERATURE (C) 2.9 2.8 4.5 8.2 15.3 17.8 21.0 21.1 18.8 13.5 8.8 7.5 11.9 DAYS WITH MINIMUM TEMP. >=21 0 0 0 0 0 2 18 15 6 0 0 0 41 DAYS WITH MINIMUM TEMP. <=-4 0 0 0 0 0 0 0 0 0 0 0 0 0 DAYS WITH FREEZING MIN.<= 0 6 5 2 0 0 0 0 0 0 0 0 0 13 TEMPERATURE RECORDS LOWEST(C) -2.2 -3.4 -1.0 2.8 9.0 13.5 16.8 18.0 15.0 10.0 3.8 3.0 -3.4 DAY 21 3 1 6 2 9 15 18 20 17 13 31 MAXIMUM AIR TEMPERATURE (C) 6.9 8.7 9.1 13.5 23.2 25.7 30.5 29.6 25.4 20.4 14.7 14.8 18.5 DAYS WITH MAXIMUM TEMP. >=30 0 0 0 0 1 2 19 17 2 0 0 0 41 DAYS WITH MAXIMUM TEMP. <= 0 0 0 0 0 0 0 0 0 0 0 0 0 0 TEMPERATURE RECORDS HIGHEST(C) 11.0 26.4 12.4 20.4 30.0 30.2 34.2 33.6 34.6 25.0 18.4 25.0 34.6 DAY 1 9 5 27 16 26 13 6 7 24 10 25 DIF. BETWEEN (MAX.-MIN.) (C) 4.0 5.9 4.6 5.3 7.9 7.9 9.5 8.5 6.6 6.9 5.9 7.3 6.6 MEAN DAILY TEMP. (MDT) (C) 4.9 5.8 6.8 10.8 19.3 21.8 25.7 25.3 22.1 17.0 11.8 11.2 15.2 COOLING DEG. DAYS(BASE 21 0C) 0.0 0.0 0.0 0.0 11.0 35.6 146.9 133.7 47.6 0.0 0.0 0.0 374.8 HEATING DEG. DAYS(BASE 18 0C) 406.2 354.9 346.8 214.5 23.0 0.0 0.0 0.0 0.4 40.4 186.7 211.6 1784.5 DEWPOINT (MEAN C) 2.3 2.8 4.1 8.6 16.3 18.3 21.4 21.5 19.6 14.5 9.4 7.6 12.2 MIXING RATIO (G/KG) 4.50 4.64 5.12 6.96 11.71 13.28 16.29 16.27 14.50 10.38 7.31 6.46 9.79 VAPOUR PRESSURE (HPA) 7.38 7.58 8.35 11.29 18.78 21.23 25.85 25.82 23.08 16.75 11.95 10.51 15.71 SATURATION DEF. (HPA) 1.37 1.85 1.67 1.97 4.24 5.55 8.42 7.10 3.90 2.73 1.95 2.53 3.61 RELATIVE HUMIDITY (MEAN %) 84 84 84 86 83 81 78 80 87 87 86 83 84 RELATIVE HUMIDITY (MAX. %) 92 93 93 95 95 94 93 94 96 95 94 94 94 RELATIVE HUMIDITY (MIN. %) 73 73 73 75 68 65 61 64 75 75 75 67 70 RELATIVE HUMIDITY (MEAN% 03UTC) 87 90 88 89 91 87 85 88 93 91 91 88 89 RELATIVE HUMIDITY (MEAN% 09UTC) 77 78 79 80 72 70 65 68 78 79 78 75 75 RELATIVE HUMIDITY (MEAN% 15UTC) 85 82 82 85 81 79 74 77 88 89 88 84 83 RH=0 => RELATIVE HUMIDITY < 0.5% AMOUNT OF PRECIPITATION MM. 144.1 123.7 94.1 50.8 30.1 32.2 1.5 84.3 309.3 141.9 163.6 92.3 1267.9 DAYS WITH PRECIPITATION >=10 6 3 4 1 0 1 0 3 7 2 2 4 33 DAYS WITH PRECIPITATION >= 5 7 6 8 3 4 4 0 4 9 7 5 5 62 DAYS WITH PRECIPITATION >= 1 10 10 11 8 6 4 1 6 11 13 7 6 93 DAYS WITH PRECIPITATION 14 16 14 17 11 7 6 7 15 16 10 11 144 GREATEST DAILY PRECIPITATION 34.0 58.0 17.0 15.5 9.0 13.0 1.3 32.0 70.3 70.0 103.1 32.4 103.1 DAY 8 2 13 9 1 11 26 29 20 14 11 11 DAY WITH THUNDER STORM 0 0 0 3 7 4 3 1 1 4 0 0 23 DAYS WITH SNOW OR SLEET 5 7 3 0 0 0 0 0 0 0 0 0 15 DAYS WITH DUST 0 0 0 0 0 0 0 0 0 0 0 0 0 WIND DIRECTION (PREVAILING) 360 315 135 135 135 135 135 135 135 315 315 360 135 PREVAILING WIND SPEED(KNOTS) 5.9 6.7 6.1 8.2 6.5 8.1 6.9 6.3 8.0 7.5 5.9 6.4 7.3 PREVAILING WIND PERCENT 14.5 10.3 12.9 18.3 13.3 18.3 14.1 12.9 8.8 10.5 6.3 6.5 9.8 CALMS PERCENT OF WIND 67.7 70.3 67.7 49.6 72.2 62.9 60.1 69.0 69.6 62.1 82.7 76.6 67.5 NO. OF WIND OBSERVATION 248 232 248 240 248 240 248 248 240 248 237 248 2925 VECTOR WIND DIRECTION (MEAN) 338 314 86 125 137 140 99 107 105 341 355 327 98 VECTOR WIND MAGNITUDE(KNOTS) 1.5 0.7 0.6 1.3 1.0 1.9 1.7 1.2 0.4 0.2 0.6 0.2 0.5 WIND STEADINESES (MEAN %) 75.0 31.8 31.6 38.2 58.8 73.1 65.4 57.1 19.0 7.7 66.7 11.8 23.8 WIND SPEED (MEAN KNOTS) 2.0 2.2 1.9 3.4 1.7 2.6 2.6 2.1 2.1 2.6 0.9 1.7 2.1 FASTEST WIND DIRECTION 360 240 150 170 150 150 30 170 140 360 310 240 240 FASTEST WIND SPEED (KNOTS) 14 35 12 16 14 19 14 19 16 19 10 29 35 DAY 13 9 1 6 2 1 6 24 9 27 2 25 DAYS WITH SKY CLEAR (0-2)/8 2 4 2 5 11 14 16 16 9 8 6 3 96 DAYS WITH P.CLOUDY (3-6)/8 3 5 7 6 11 6 10 7 10 10 9 10 94 DAYS WITH CLOUDY (7-8)/8 26 20 22 19 9 10 5 8 11 13 15 18 176 DAYS WITH VISIBILITY =< 2 KM 11 11 5 8 0 0 0 2 8 3 6 12 66 DURATION OF SUNSHINE HOURS 42.2 72.5 70.3 121.2 216.3 224.2 287.5 234.7 143.4 130.0 89.3 85.8 1717.4 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ASTARA (40709) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 38 25 N LONGITUDE 48 52 E DATA PROCESSING CENTER ELEVATION -18.0 M MEANS AND EXTREMES FOR THE YEAR 1996 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL MEAN QFE PRESSURE IN HPA 1028.5 1024.2 1023.0 1021.6 1017.0 1015.8 1013.9 1013.9 1013.9 1021.4 1028.9 1023.0 1020.4 MAX. QFE PRESSURE IN HPA 1044.6 1036.1 1033.2 1037.4 1026.6 1026.0 1023.2 1027.5 1032.8 1036.7 1041.0 1033.3 1044.6 DAY-HOUR 9-18 13- 6 16- 6 4- 6 1- 9 11- 6 3- 9 29- 6 30-21 1-18 16- 6 1- 6 MIN. QFE PRESSURE IN HPA 1012.5 1000.9 1010.4 1003.6 1006.9 1004.3 1008.4 1005.0 1001.9 1008.0 1020.0 1006.5 1000.9 DAY-HOUR 6-12 9-12 2-12 18-15 16-15 1-15 24- 3 8- 0 8-15 27- 0 1-12 24-15 MEAN QNH PRESSURE IN HPA 1026.0 1021.7 1020.5 1019.1 1014.6 1013.3 1011.5 1011.4 1011.5 1018.9 1026.4 1020.5 1018.0 MAX. QNH PRESSURE IN HPA 1042.1 1033.6 1030.7 1034.9 1024.1 1023.5 1020.7 1025.0 1030.3 1034.2 1038.5 1030.8 1042.1 DAY-HOUR 9-18 13- 6 16- 6 4- 6 1- 9 11- 6 3- 9 29- 6 30-21 1-18 16- 6 1- 6 MIN. QNH PRESSURE IN HPA 1010.0 998.5 1007.9 1001.2 1004.4 1001.9 1005.9 1002.6 999.5 1005.5 1017.5 1004.1 998.5 DAY-HOUR 6-12 9-12 2-12 18-15 16-15 1-15 24- 3 8- 0 8-15 27- 0 1-12 24-15 MEAN QFF PRESSURE IN HPA 1026.2 1022.0 1020.7 1019.4 1014.9 1013.7 1011.9 1011.8 1011.8 1019.3 1026.6 1020.8 1018.3 MAX. QFF PRESSURE IN HPA 1042.3 1033.8 1030.9 1035.1 1024.4 1023.9 1021.1 1025.4 1030.6 1034.5 1038.8 1031.1 1042.3 DAY-HOUR 9-18 13- 6 16- 6 4- 6 1- 9 11- 6 3- 9 29- 6 30-21 1-18 16- 6 1- 6 MIN. QFF PRESSURE IN HPA 1010.3 998.8 1008.2 1001.4 1004.8 1002.3 1006.3 1003.0 999.9 1005.9 1017.8 1004.3 998.8 DAY-HOUR 6-12 9-12 2-12 18-15 16-15 1-15 24- 3 8- 0 8-15 27- 0 1-12 24-18 PRESSURE AT HOUR 0000 UTC. MEAN QFE PRESSURE IN HPA 1028.2 1023.7 1022.5 1021.3 1016.8 1015.5 1013.8 1013.7 1013.5 1021.2 1028.5 1022.8 1020.1 MAX. QFE PRESSURE IN HPA 1044.3 1035.5 1031.7 1036.4 1023.6 1023.6 1020.6 1026.6 1021.1 1035.2 1039.7 1032.9 1044.3 DAY 10 13 16 4 1 12 3 29 27 2 16 18 MIN. QFE PRESSURE IN HPA 1016.4 1008.5 1012.9 1007.0 1008.8 1007.6 1008.5 1005.0 1003.2 1008.0 1021.3 1008.7 1003.2 DAY 6 10 3 13 16 1 24 8 8 27 6 27 MEAN QNH PRESSURE IN HPA 1025.7 1021.3 1020.1 1018.8 1014.3 1013.0 1011.4 1011.2 1011.0 1018.7 1026.0 1020.3 1017.6 MAX. QNH PRESSURE IN HPA 1041.8 1033.0 1029.2 1033.9 1021.1 1021.1 1018.1 1024.1 1018.6 1032.7 1037.2 1030.4 1041.8 DAY 10 13 16 4 1 12 3 29 27 2 16 18 MIN. QNH PRESSURE IN HPA 1013.9 1006.0 1010.4 1004.5 1006.3 1005.1 1006.0 1002.6 1000.8 1005.5 1018.8 1006.2 1000.8 DAY 6 10 3 13 16 1 24 8 8 27 6 27 MEAN QFF PRESSURE IN HPA 1026.0 1021.5 1020.3 1019.1 1014.6 1013.4 1011.8 1011.6 1011.4 1019.0 1026.3 1020.6 1018.0 MAX. QFF PRESSURE IN HPA 1042.0 1033.2 1029.4 1034.1 1021.4 1021.5 1018.5 1024.5 1019.0 1033.0 1037.5 1030.6 1042.0 DAY 10 13 16 4 1 12 3 29 27 2 16 18 MIN. QFF PRESSURE IN HPA 1014.2 1006.4 1010.7 1004.8 1006.7 1005.5 1006.5 1003.0 1001.2 1005.9 1019.1 1006.5 1001.2 DAY 6 10 3 13 16 1 24 8 8 27 6 27 PRESSURE AT HOUR 0300 UTC. MEAN QFE PRESSURE IN HPA 1028.4 1024.0 1022.8 1021.8 1017.4 1016.3 1014.5 1014.3 1014.3 1021.5 1028.9 1023.0 1020.6 MAX. QFE PRESSURE IN HPA 1043.8 1035.5 1032.3 1036.9 1024.5 1024.8 1022.0 1026.5 1021.2 1034.8 1040.3 1032.1 1043.8 DAY 10 13 16 4 26 11 3 29 24 1 16 1 MIN. QFE PRESSURE IN HPA 1015.7 1006.1 1013.9 1007.0 1009.8 1009.1 1008.4 1006.0 1003.7 1008.7 1022.3 1008.7 1003.7 DAY 6 9 2 13 16 29 24 8 8 27 6 25 MEAN QNH PRESSURE IN HPA 1025.9 1021.5 1020.3 1019.3 1014.9 1013.8 1012.0 1011.9 1011.8 1019.0 1026.4 1020.6 1018.1 MAX. QNH PRESSURE IN HPA 1041.3 1033.0 1029.8 1034.4 1022.0 1022.3 1019.5 1024.0 1018.7 1032.3 1037.8 1029.6 1041.3 DAY 10 13 16 4 26 11 3 29 24 1 16 1 MIN. QNH PRESSURE IN HPA 1013.2 1003.7 1011.4 1004.5 1007.3 1006.6 1005.9 1003.6 1001.3 1006.2 1019.8 1006.2 1001.3 DAY 6 9 2 13 16 29 24 8 8 27 6 25 MEAN QFF PRESSURE IN HPA 1026.1 1021.7 1020.5 1019.6 1015.3 1014.2 1012.4 1012.3 1012.2 1019.4 1026.7 1020.8 1018.4 MAX. QFF PRESSURE IN HPA 1041.5 1033.2 1030.0 1034.6 1022.3 1022.7 1019.9 1024.4 1019.0 1032.6 1038.1 1029.9 1041.5 DAY 10 13 16 4 26 11 3 29 24 1 16 8 MIN. QFF PRESSURE IN HPA 1013.5 1003.9 1011.7 1004.8 1007.7 1007.0 1006.3 1004.0 1001.7 1006.6 1020.1 1006.6 1001.7 DAY 6 9 2 13 16 29 24 8 8 27 6 25 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ASTARA (40709) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 38 25 N LONGITUDE 48 52 E DATA PROCESSING CENTER ELEVATION -18.0 M MEANS AND EXTREMES FOR THE YEAR 1996 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 0600 UTC. MEAN QFE PRESSURE IN HPA 1029.4 1025.1 1023.7 1022.4 1018.1 1016.6 1014.8 1014.9 1015.0 1022.3 1029.8 1024.0 1021.3 MAX. QFE PRESSURE IN HPA 1044.5 1036.1 1033.2 1037.4 1025.8 1026.0 1023.1 1027.5 1022.8 1036.3 1041.0 1033.3 1044.5 DAY 10 13 16 4 1 11 3 29 30 1 16 1 MIN. QFE PRESSURE IN HPA 1016.1 1005.9 1013.3 1006.9 1010.8 1009.5 1009.7 1007.6 1004.1 1009.3 1022.5 1007.7 1004.1 DAY 6 9 2 18 16 29 24 8 8 27 6 25 MEAN QNH PRESSURE IN HPA 1026.9 1022.6 1021.3 1019.9 1015.6 1014.2 1012.3 1012.4 1012.6 1019.8 1027.3 1021.5 1018.9 MAX. QNH PRESSURE IN HPA 1042.0 1033.6 1030.7 1034.9 1023.3 1023.5 1020.6 1025.0 1020.3 1033.8 1038.5 1030.8 1042.0 DAY 10 13 16 4 1 11 3 29 30 1 16 1 MIN. QNH PRESSURE IN HPA 1013.6 1003.5 1010.8 1004.4 1008.3 1007.0 1007.2 1005.1 1001.7 1006.8 1020.0 1005.2 1001.7 DAY 6 9 2 18 16 29 24 8 8 27 6 25 MEAN QFF PRESSURE IN HPA 1027.1 1022.8 1021.5 1020.1 1016.0 1014.5 1012.7 1012.8 1012.9 1020.2 1027.3 1021.8 1019.1 MAX. QFF PRESSURE IN HPA 1042.2 1033.8 1030.9 1035.1 1023.6 1023.9 1021.0 1025.4 1020.7 1034.1 1038.8 1031.1 1042.2 DAY 10 13 16 4 1 11 3 29 30 1 16 1 MIN. QFF PRESSURE IN HPA 1013.9 1003.7 1011.1 1004.7 1008.7 1007.4 1007.7 1005.6 1002.1 1007.2 1020.3 1005.5 1002.1 DAY 6 9 2 18 16 29 24 8 8 27 6 25 PRESSURE AT HOUR 0900 UTC. MEAN QFE PRESSURE IN HPA 1028.9 1024.7 1023.4 1022.0 1017.7 1016.3 1014.5 1014.3 1014.4 1021.8 1029.2 1023.1 1020.8 MAX. QFE PRESSURE IN HPA 1043.7 1035.3 1033.1 1037.1 1026.6 1025.8 1023.2 1027.4 1023.8 1035.9 1040.9 1031.9 1043.7 DAY 10 13 16 4 1 11 3 29 30 1 16 1 MIN. QFE PRESSURE IN HPA 1014.8 1003.9 1011.6 1005.3 1009.8 1008.8 1009.5 1006.8 1003.1 1009.9 1021.6 1007.2 1003.1 DAY 6 9 2 18 16 1 6 8 8 26 6 25 MEAN QNH PRESSURE IN HPA 1026.4 1022.2 1020.9 1019.6 1015.2 1013.8 1012.0 1011.8 1011.9 1019.3 1026.7 1020.7 1018.4 MAX. QNH PRESSURE IN HPA 1041.2 1032.8 1030.6 1034.6 1024.1 1023.3 1020.7 1024.9 1021.3 1033.4 1038.4 1029.4 1041.2 DAY 10 13 16 4 1 11 3 29 30 1 16 1 MIN. QNH PRESSURE IN HPA 1012.3 1001.5 1009.1 1002.9 1007.3 1006.3 1007.0 1004.4 1000.7 1007.4 1019.1 1004.7 1000.7 DAY 6 9 2 18 16 1 6 8 8 26 6 25 MEAN QFF PRESSURE IN HPA 1026.6 1022.4 1021.1 1019.8 1015.6 1014.2 1012.4 1012.2 1012.3 1019.6 1026.7 1020.9 1018.7 MAX. QFF PRESSURE IN HPA 1041.4 1033.0 1030.8 1034.8 1024.4 1023.7 1021.1 1025.3 1021.7 1033.7 1038.7 1029.7 1041.4 DAY 10 13 16 4 1 11 3 29 30 1 16 1 MIN. QFF PRESSURE IN HPA 1012.6 1001.7 1009.4 1003.1 1007.7 1006.7 1007.5 1004.8 1001.1 1007.8 1019.4 1005.1 1001.1 DAY 6 9 2 18 16 1 6 8 8 27 6 25 PRESSURE AT HOUR 1200 UTC. MEAN QFE PRESSURE IN HPA 1027.7 1023.6 1022.5 1021.3 1016.7 1015.2 1013.5 1013.3 1013.2 1020.8 1028.4 1022.4 1019.9 MAX. QFE PRESSURE IN HPA 1042.9 1034.6 1031.9 1036.6 1025.9 1025.7 1022.3 1026.8 1026.0 1036.1 1040.0 1031.2 1042.9 DAY 9 26 16 4 1 11 3 29 30 1 16 7 MIN. QFE PRESSURE IN HPA 1012.5 1000.9 1010.4 1004.0 1008.2 1006.1 1008.7 1006.4 1002.1 1008.8 1020.0 1007.9 1000.9 DAY 6 9 2 18 16 1 24 8 8 26 1 24 MEAN QNH PRESSURE IN HPA 1025.2 1021.1 1020.0 1018.9 1014.2 1012.7 1011.1 1010.8 1010.8 1018.3 1025.9 1019.9 1017.4 MAX. QNH PRESSURE IN HPA 1040.4 1032.1 1029.4 1034.1 1023.4 1023.2 1019.8 1024.3 1023.5 1033.6 1037.5 1028.7 1040.4 DAY 9 26 16 4 1 11 3 29 30 1 16 7 MIN. QNH PRESSURE IN HPA 1010.0 998.5 1007.9 1001.6 1005.7 1003.7 1006.2 1004.0 999.7 1006.3 1017.5 1005.4 998.5 DAY 6 9 2 18 16 1 24 8 8 26 1 24 MEAN QFF PRESSURE IN HPA 1025.5 1021.3 1020.2 1019.1 1014.5 1013.1 1011.5 1011.2 1011.1 1018.7 1025.8 1020.1 1017.7 MAX. QFF PRESSURE IN HPA 1040.6 1032.3 1029.6 1034.3 1023.7 1023.6 1020.2 1024.7 1023.9 1033.9 1037.8 1029.0 1040.6 DAY 9 26 16 4 1 11 3 29 30 1 16 7 MIN. QFF PRESSURE IN HPA 1010.3 998.8 1008.2 1001.8 1006.1 1004.0 1006.7 1004.4 1000.1 1006.7 1017.8 1005.8 998.8 DAY 6 9 2 18 16 1 24 8 8 26 1 24 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ASTARA (40709) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 38 25 N LONGITUDE 48 52 E DATA PROCESSING CENTER ELEVATION -18.0 M MEANS AND EXTREMES FOR THE YEAR 1996 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 1500 UTC. MEAN QFE PRESSURE IN HPA 1028.3 1024.1 1022.7 1021.0 1016.4 1014.9 1013.0 1013.0 1013.1 1021.1 1028.7 1022.9 1019.9 MAX. QFE PRESSURE IN HPA 1044.0 1035.5 1032.5 1036.6 1025.5 1025.3 1020.8 1026.2 1028.2 1035.8 1040.4 1032.2 1044.0 DAY 9 26 16 4 1 11 3 29 30 1 16 7 MIN. QFE PRESSURE IN HPA 1013.1 1002.9 1010.6 1003.6 1006.9 1004.3 1008.4 1005.5 1001.9 1008.4 1020.1 1006.5 1001.9 DAY 6 9 2 18 16 1 24 7 8 26 1 24 MEAN QNH PRESSURE IN HPA 1025.8 1021.6 1020.3 1018.5 1013.9 1012.4 1010.5 1010.5 1010.6 1018.6 1026.2 1020.4 1017.4 MAX. QNH PRESSURE IN HPA 1041.5 1033.0 1030.0 1034.1 1023.0 1022.8 1018.3 1023.7 1025.7 1033.3 1037.9 1029.7 1041.5 DAY 9 26 16 4 1 11 3 29 30 1 16 7 MIN. QNH PRESSURE IN HPA 1010.6 1000.5 1008.1 1001.2 1004.4 1001.9 1005.9 1003.1 999.5 1005.9 1017.6 1004.1 999.5 DAY 6 9 2 18 16 1 24 7 8 26 1 24 MEAN QFF PRESSURE IN HPA 1026.0 1021.8 1020.5 1018.8 1014.3 1012.8 1010.9 1010.9 1011.0 1018.9 1026.5 1020.7 1017.7 MAX. QFF PRESSURE IN HPA 1041.7 1033.2 1030.2 1034.3 1023.3 1023.2 1018.7 1024.1 1026.0 1033.6 1038.2 1030.0 1041.7 DAY 9 26 16 4 1 11 3 29 30 1 16 7 MIN. QFF PRESSURE IN HPA 1010.9 1000.8 1008.4 1001.4 1004.8 1002.3 1006.4 1003.5 999.9 1006.3 1017.9 1004.4 999.9 DAY 6 9 2 18 16 1 24 7 8 26 1 24 PRESSURE AT HOUR 1800 UTC. MEAN QFE PRESSURE IN HPA 1028.7 1024.6 1023.4 1021.6 1016.8 1015.7 1013.8 1013.9 1014.0 1021.7 1029.0 1023.1 1020.5 MAX. QFE PRESSURE IN HPA 1044.6 1036.0 1033.1 1037.0 1025.3 1025.6 1020.2 1026.5 1031.8 1036.7 1040.7 1032.5 1044.6 DAY 9 12 16 4 1 11 3 28 30 1 16 7 MIN. QFE PRESSURE IN HPA 1014.5 1004.2 1012.7 1007.1 1008.0 1007.7 1009.7 1005.9 1002.6 1009.2 1020.5 1006.5 1002.6 DAY 6 9 2 18 16 1 17 7 7 26 1 24 MEAN QNH PRESSURE IN HPA 1026.2 1022.1 1020.9 1019.2 1014.4 1013.3 1011.3 1011.5 1011.6 1019.2 1026.6 1020.6 1018.1 MAX. QNH PRESSURE IN HPA 1042.1 1033.5 1030.6 1034.5 1022.8 1023.1 1017.7 1024.0 1029.3 1034.2 1038.2 1030.0 1042.1 DAY 9 12 16 4 1 11 3 28 30 1 16 7 MIN. QNH PRESSURE IN HPA 1012.0 1001.8 1010.2 1004.6 1005.5 1005.2 1007.2 1003.5 1000.2 1006.7 1018.0 1004.1 1000.2 DAY 6 9 2 18 16 1 17 7 7 26 1 24 MEAN QFF PRESSURE IN HPA 1026.4 1022.3 1021.2 1019.4 1014.7 1013.6 1011.7 1011.9 1011.9 1019.5 1026.8 1020.9 1018.4 MAX. QFF PRESSURE IN HPA 1042.3 1033.7 1030.8 1034.7 1023.1 1023.5 1018.1 1024.4 1029.6 1034.5 1038.5 1030.3 1042.3 DAY 9 12 16 4 1 11 3 28 30 1 16 7 MIN. QFF PRESSURE IN HPA 1012.3 1002.1 1010.5 1004.9 1005.9 1005.6 1007.6 1003.9 1000.6 1007.1 1018.3 1004.3 1000.6 DAY 6 9 2 18 16 1 17 7 7 26 1 24 PRESSURE AT HOUR 2100 UTC. MEAN QFE PRESSURE IN HPA 1028.4 1024.2 1023.0 1021.7 1016.6 1016.0 1013.8 1013.9 1014.0 1021.2 1028.9 1022.8 1020.4 MAX. QFE PRESSURE IN HPA 1044.4 1035.5 1033.1 1036.4 1024.3 1024.8 1020.2 1026.6 1032.8 1035.9 1040.1 1032.8 1044.4 DAY 9 12 16 4 1 11 3 28 30 1 15 17 MIN. QFE PRESSURE IN HPA 1016.0 1005.9 1012.9 1008.8 1007.6 1008.3 1009.1 1005.3 1003.3 1008.9 1021.3 1007.0 1003.3 DAY 6 9 2 12 31 1 23 7 7 26 1 24 MEAN QNH PRESSURE IN HPA 1025.9 1021.7 1020.5 1019.2 1014.1 1013.6 1011.3 1011.5 1011.6 1018.7 1026.4 1020.4 1017.9 MAX. QNH PRESSURE IN HPA 1041.9 1033.0 1030.6 1033.9 1021.8 1022.3 1017.7 1024.1 1030.3 1033.4 1037.6 1030.3 1041.9 DAY 9 12 16 4 1 11 3 28 30 1 15 17 MIN. QNH PRESSURE IN HPA 1013.5 1003.5 1010.4 1006.3 1005.1 1005.8 1006.6 1002.9 1000.9 1006.4 1018.8 1004.5 1000.9 DAY 6 9 2 12 31 1 23 7 7 26 1 24 MEAN QFF PRESSURE IN HPA 1026.1 1021.9 1020.8 1019.5 1014.5 1013.9 1011.7 1011.9 1011.9 1019.1 1026.7 1020.6 1018.2 MAX. QFF PRESSURE IN HPA 1042.1 1033.2 1030.8 1034.1 1022.1 1022.7 1018.1 1024.5 1030.6 1033.7 1037.9 1030.6 1042.1 DAY 9 12 16 4 1 11 3 28 30 1 16 17 MIN. QFF PRESSURE IN HPA 1013.8 1003.7 1010.7 1006.6 1005.5 1006.2 1007.1 1003.3 1001.3 1006.8 1019.1 1004.8 1001.3 DAY 6 9 2 12 31 1 23 7 7 26 1 24 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ASTARA (40709) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 38 25 N LONGITUDE 48 52 E DATA PROCESSING CENTER ELEVATION -18.0 M MEANS AND EXTREMES FOR THE YEAR 1997 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AIR TEMPERATURE (C) 6.2 4.6 7.1 13.6 18.8 23.4 25.1 25.7 19.2 18.8 11.8 7.3 15.1 MINIMUN AIR TEMPERATURE (C) 3.1 1.0 3.7 9.6 14.5 19.7 21.5 21.5 16.3 15.3 8.9 4.4 11.6 DAYS WITH MINIMUM TEMP. >=21 0 0 0 0 0 10 23 21 1 0 0 0 55 DAYS WITH MINIMUM TEMP. <=-4 0 1 0 0 0 0 0 0 0 0 0 0 1 DAYS WITH FREEZING MIN.<= 0 4 11 2 0 0 0 0 0 0 0 0 5 22 TEMPERATURE RECORDS LOWEST(C) -3.0 -5.0 -0.4 2.0 9.6 15.0 18.0 19.0 12.6 7.6 3.8 -0.8 -5.0 DAY 29 6 10 12 3 4 8 31 15 31 29 18 MAXIMUM AIR TEMPERATURE (C) 9.5 8.3 10.6 18.0 22.5 26.8 28.6 29.5 21.9 22.3 14.5 10.6 18.6 DAYS WITH MAXIMUM TEMP. >=30 0 0 0 0 0 4 9 16 1 0 0 0 30 DAYS WITH MAXIMUM TEMP. <= 0 0 0 0 0 0 0 0 0 0 0 0 0 0 TEMPERATURE RECORDS HIGHEST(C) 16.0 15.6 20.6 27.4 26.4 31.0 33.4 33.0 30.0 28.2 20.2 17.0 33.4 DAY 7 15 23 24 26 14 30 4 1 14 5 5 DIF. BETWEEN (MAX.-MIN.) (C) 6.4 7.3 6.9 8.4 8.0 7.1 7.1 8.0 5.6 7.0 5.6 6.2 7.0 MEAN DAILY TEMP. (MDT) (C) 6.3 4.7 7.1 13.8 18.5 23.3 25.1 25.5 19.1 18.8 11.7 7.5 15.1 COOLING DEG. DAYS(BASE 21 0C) 0.0 0.0 0.0 0.0 2.1 75.2 126.8 139.9 9.9 3.2 0.0 0.0 357.1 HEATING DEG. DAYS(BASE 18 0C) 361.5 373.2 336.5 129.3 19.0 0.0 0.0 0.0 10.1 17.9 188.0 324.7 1760.2 DEWPOINT (MEAN C) 3.1 1.0 3.5 8.4 15.0 19.7 20.9 21.0 16.8 16.0 9.3 5.3 11.7 MIXING RATIO (G/KG) 4.80 4.09 4.94 7.02 10.73 14.56 15.70 15.83 12.05 11.43 7.30 5.58 9.50 VAPOUR PRESSURE (HPA) 7.83 6.69 8.03 11.33 17.25 23.14 24.88 25.11 19.37 18.38 11.88 9.08 15.25 SATURATION DEF. (HPA) 1.82 2.01 2.28 4.73 4.87 5.95 7.44 8.30 3.21 3.69 2.17 1.41 3.99 RELATIVE HUMIDITY (MEAN %) 82 79 79 74 79 81 79 77 87 85 85 88 81 RELATIVE HUMIDITY (MAX. %) 92 93 92 88 92 93 90 91 96 94 93 95 92 RELATIVE HUMIDITY (MIN. %) 67 62 61 56 64 67 65 61 75 71 73 76 67 RELATIVE HUMIDITY (MEAN% 03UTC) 85 84 87 83 85 87 85 85 92 91 90 91 87 RELATIVE HUMIDITY (MEAN% 09UTC) 73 66 71 67 68 71 69 65 79 73 75 80 71 RELATIVE HUMIDITY (MEAN% 15UTC) 85 80 80 72 77 79 74 72 88 88 87 88 81 RH=0 => RELATIVE HUMIDITY < 0.5% AMOUNT OF PRECIPITATION MM. 117.6 187.4 121.7 33.3 23.9 89.5 65.4 47.5 501.6 90.8 60.7 107.2 1446.6 DAYS WITH PRECIPITATION >=10 4 6 3 1 0 2 3 3 12 5 3 3 45 DAYS WITH PRECIPITATION >= 5 10 10 7 1 2 4 5 3 14 6 3 6 71 DAYS WITH PRECIPITATION >= 1 12 13 11 5 6 7 6 3 18 9 7 9 106 DAYS WITH PRECIPITATION 15 13 14 7 11 15 9 7 22 10 10 9 142 GREATEST DAILY PRECIPITATION 24.8 41.0 41.0 27.0 8.0 39.3 17.7 16.4 146.0 25.0 24.6 46.0 146.0 DAY 16 5 7 11 4 3 17 21 3 28 7 16 DAY WITH THUNDER STORM 0 0 0 2 4 9 2 0 0 0 0 0 17 DAYS WITH SNOW OR SLEET 2 4 1 0 0 0 0 0 0 0 0 2 9 DAYS WITH DUST 0 0 0 0 0 0 0 0 0 0 1 0 1 WIND DIRECTION (PREVAILING) 315 315 135 135 135 135 135 135 315 135 315 360 135 PREVAILING WIND SPEED(KNOTS) 6.4 7.8 8.0 7.3 7.6 6.6 6.4 5.8 7.2 5.0 6.3 5.4 6.8 PREVAILING WIND PERCENT 10.1 11.2 16.5 21.7 18.1 22.1 13.3 7.7 15.0 8.5 12.9 10.5 10.5 CALMS PERCENT OF WIND 71.4 68.8 58.1 53.3 69.8 63.3 75.0 75.0 72.1 77.0 72.9 77.4 69.6 NO. OF WIND OBSERVATION 248 224 248 240 248 240 248 248 240 248 240 248 2920 VECTOR WIND DIRECTION (MEAN) 345 343 133 165 127 132 132 94 328 21 343 345 104 VECTOR WIND MAGNITUDE(KNOTS) 0.9 0.7 0.9 1.9 1.6 1.6 0.9 0.6 0.8 0.1 1.1 0.9 0.3 WIND STEADINESES (MEAN %) 47.4 30.4 27.3 45.2 72.7 69.6 60.0 46.2 44.4 7.1 68.7 69.2 14.3 WIND SPEED (MEAN KNOTS) 1.9 2.3 3.3 4.2 2.2 2.3 1.5 1.3 1.8 1.4 1.6 1.3 2.1 FASTEST WIND DIRECTION 340 330 350 240 180 160 150 150 330 360 360 340 240 FASTEST WIND SPEED (KNOTS) 16 19 16 39 17 14 14 12 14 16 16 12 39 DAY 7 5 2 9 31 4 30 12 4 30 23 10 DAYS WITH SKY CLEAR (0-2)/8 6 12 9 6 11 11 12 13 7 10 3 4 104 DAYS WITH P.CLOUDY (3-6)/8 11 5 8 12 9 11 10 9 5 9 10 12 111 DAYS WITH CLOUDY (7-8)/8 14 11 14 12 11 8 9 9 18 12 17 15 150 DAYS WITH VISIBILITY =< 2 KM 9 7 5 3 1 3 1 1 16 2 2 12 62 DURATION OF SUNSHINE HOURS 101.2 144.3 153.0 180.5 166.5 199.1 219.0 224.8 92.8 160.4 73.1 92.4 1807.1 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ASTARA (40709) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 38 25 N LONGITUDE 48 52 E DATA PROCESSING CENTER ELEVATION -18.0 M MEANS AND EXTREMES FOR THE YEAR 1997 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL MEAN QFE PRESSURE IN HPA 1023.5 1026.0 1020.5 1015.5 1017.8 1012.5 1011.2 1012.3 1020.0 1019.1 1025.2 1023.2 1018.9 MAX. QFE PRESSURE IN HPA 1036.4 1036.3 1039.2 1025.8 1027.3 1020.8 1021.6 1021.2 1030.2 1034.7 1040.1 1038.3 1040.1 DAY-HOUR 23-15 8- 9 11- 6 20- 6 14- 9 3-18 19- 6 21- 3 7- 3 31-18 7- 6 17- 6 MIN. QFE PRESSURE IN HPA 1012.1 1016.1 1004.4 998.7 1003.7 1005.1 1004.2 1003.7 1003.6 1010.3 1009.0 1007.1 998.7 DAY-HOUR 29-15 2-12 23-12 5-12 4- 0 30-15 1-15 14-12 1-15 2-12 5- 0 9- 3 MEAN QNH PRESSURE IN HPA 1021.0 1023.5 1018.0 1013.0 1015.3 1010.0 1008.7 1009.8 1017.5 1016.6 1022.7 1020.7 1016.4 MAX. QNH PRESSURE IN HPA 1033.9 1033.8 1036.7 1023.3 1024.8 1018.3 1019.1 1018.7 1027.7 1032.2 1037.6 1035.8 1037.6 DAY-HOUR 23-15 8- 9 11- 6 20- 6 14- 9 3-18 19- 6 21- 3 7- 3 31-18 7- 6 17- 6 MIN. QNH PRESSURE IN HPA 1009.6 1013.6 1002.0 996.3 1001.3 1002.7 1001.8 1001.3 1001.2 1007.8 1006.5 1004.6 996.3 DAY-HOUR 29-15 2-12 23-12 5-12 4- 0 30-15 1-15 14-12 1-15 2-12 5- 0 9- 3 MEAN QFF PRESSURE IN HPA 1021.2 1023.7 1018.2 1013.3 1015.6 1010.4 1009.1 1010.2 1017.8 1016.9 1023.0 1021.0 1016.7 MAX. QFF PRESSURE IN HPA 1034.1 1034.0 1036.9 1023.6 1025.2 1018.6 1019.5 1019.1 1028.0 1032.5 1037.8 1036.0 1037.8 DAY-HOUR 23-15 8- 9 11- 6 20- 6 14- 9 3-18 19- 6 21- 3 7- 3 31-18 7- 6 17- 6 MIN. QFF PRESSURE IN HPA 1009.8 1013.9 1002.2 996.6 1001.6 1003.1 1002.2 1001.7 1001.5 1008.2 1006.9 1004.9 996.6 DAY-HOUR 29-15 2-15 23-12 5-12 4- 0 30-15 1-15 14-12 1-15 2-12 5- 0 9- 3 PRESSURE AT HOUR 0000 UTC. MEAN QFE PRESSURE IN HPA 1023.5 1025.6 1019.8 1014.9 1017.3 1012.3 1010.9 1012.1 1019.7 1018.6 1025.1 1023.1 1018.6 MAX. QFE PRESSURE IN HPA 1034.5 1034.4 1037.3 1024.9 1025.9 1019.2 1018.3 1020.3 1028.8 1029.9 1038.6 1034.1 1038.6 DAY 24 21 11 20 14 4 19 21 14 31 7 17 MIN. QFE PRESSURE IN HPA 1014.4 1016.6 1005.9 1004.0 1003.7 1007.0 1004.8 1003.8 1003.7 1012.7 1009.0 1007.2 1003.7 DAY 30 18 24 5 4 30 11 5 2 14 5 9 MEAN QNH PRESSURE IN HPA 1021.0 1023.1 1017.4 1012.5 1014.8 1009.8 1008.5 1009.6 1017.2 1016.1 1022.6 1020.6 1016.1 MAX. QNH PRESSURE IN HPA 1032.0 1031.9 1034.8 1022.4 1023.4 1016.7 1015.8 1017.8 1026.3 1027.4 1036.1 1031.6 1036.1 DAY 24 21 11 20 14 4 19 21 14 31 7 17 MIN. QNH PRESSURE IN HPA 1011.9 1014.1 1003.5 1001.6 1001.3 1004.5 1002.4 1001.4 1001.3 1010.2 1006.5 1004.7 1001.3 DAY 30 18 24 5 4 30 11 5 2 14 5 9 MEAN QFF PRESSURE IN HPA 1021.3 1023.3 1017.6 1012.8 1015.1 1010.2 1008.9 1010.0 1017.5 1016.5 1022.9 1020.8 1016.4 MAX. QFF PRESSURE IN HPA 1032.2 1032.1 1035.0 1022.7 1023.8 1017.1 1016.2 1018.2 1026.6 1027.7 1036.4 1031.8 1036.4 DAY 24 21 11 20 14 4 19 21 14 31 7 17 MIN. QFF PRESSURE IN HPA 1012.2 1014.4 1003.8 1001.8 1001.6 1004.9 1002.8 1001.8 1001.7 1010.6 1006.9 1005.0 1001.6 DAY 30 18 24 5 4 30 11 5 2 14 5 9 PRESSURE AT HOUR 0300 UTC. MEAN QFE PRESSURE IN HPA 1023.5 1025.8 1020.9 1015.7 1018.1 1012.9 1011.6 1012.8 1020.2 1019.1 1025.2 1023.1 1019.1 MAX. QFE PRESSURE IN HPA 1034.0 1034.5 1038.0 1025.5 1026.6 1020.1 1020.0 1021.2 1030.2 1031.4 1039.2 1035.6 1039.2 DAY 23 25 11 20 14 3 19 21 7 31 7 17 MIN. QFE PRESSURE IN HPA 1014.2 1017.3 1006.1 1004.7 1004.7 1007.7 1006.2 1004.1 1006.0 1012.8 1009.8 1007.1 1004.1 DAY 6 18 23 5 4 30 1 5 2 13 5 9 MEAN QNH PRESSURE IN HPA 1021.0 1023.4 1018.4 1013.2 1015.6 1010.5 1009.1 1010.3 1017.8 1016.7 1022.7 1020.6 1016.6 MAX. QNH PRESSURE IN HPA 1031.5 1032.0 1035.5 1023.0 1024.1 1017.6 1017.5 1018.7 1027.7 1028.9 1036.7 1033.1 1036.7 DAY 23 25 11 20 14 3 19 21 7 31 7 17 MIN. QNH PRESSURE IN HPA 1011.7 1014.8 1003.7 1002.3 1002.3 1005.2 1003.8 1001.7 1003.6 1010.3 1007.3 1004.6 1001.7 DAY 6 18 23 5 4 30 1 5 2 13 5 9 MEAN QFF PRESSURE IN HPA 1021.2 1023.6 1018.6 1013.5 1015.9 1010.8 1009.5 1010.7 1018.1 1017.0 1023.0 1020.8 1016.9 MAX. QFF PRESSURE IN HPA 1031.7 1032.2 1035.7 1023.3 1024.5 1018.0 1017.9 1019.1 1028.0 1029.2 1037.0 1033.3 1037.0 DAY 23 25 11 20 14 3 19 21 7 31 7 17 MIN. QFF PRESSURE IN HPA 1012.0 1015.1 1003.9 1002.5 1002.6 1005.6 1004.1 1002.1 1004.0 1010.7 1007.7 1004.9 1002.1 DAY 6 18 23 5 4 30 1 5 2 13 5 9 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ASTARA (40709) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 38 25 N LONGITUDE 48 52 E DATA PROCESSING CENTER ELEVATION -18.0 M MEANS AND EXTREMES FOR THE YEAR 1997 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 0600 UTC. MEAN QFE PRESSURE IN HPA 1024.4 1027.1 1021.9 1016.4 1018.9 1013.2 1012.0 1013.4 1020.8 1020.2 1026.2 1024.2 1019.9 MAX. QFE PRESSURE IN HPA 1036.0 1036.2 1039.2 1025.8 1027.1 1020.6 1021.6 1021.0 1030.0 1033.5 1040.1 1038.3 1040.1 DAY 23 8 11 20 14 3 19 21 14 31 7 17 MIN. QFE PRESSURE IN HPA 1015.2 1018.0 1007.1 1004.0 1006.8 1007.3 1006.3 1005.2 1007.9 1013.3 1015.4 1008.2 1004.0 DAY 6 22 23 5 4 30 1 5 1 26 5 9 MEAN QNH PRESSURE IN HPA 1021.9 1024.6 1019.4 1014.0 1016.4 1010.8 1009.6 1011.0 1018.3 1017.7 1023.7 1021.7 1017.4 MAX. QNH PRESSURE IN HPA 1033.5 1033.7 1036.7 1023.3 1024.6 1018.1 1019.1 1018.5 1027.5 1031.0 1037.6 1035.8 1037.6 DAY 23 8 11 20 14 3 19 21 14 31 7 17 MIN. QNH PRESSURE IN HPA 1012.7 1015.5 1004.6 1001.6 1004.4 1004.8 1003.9 1002.8 1005.4 1010.8 1012.9 1005.7 1001.6 DAY 6 22 23 5 4 30 1 5 1 26 5 9 MEAN QFF PRESSURE IN HPA 1022.1 1024.8 1019.6 1014.3 1016.7 1011.2 1010.0 1011.4 1018.7 1018.0 1024.0 1021.9 1017.7 MAX. QFF PRESSURE IN HPA 1033.7 1033.9 1036.9 1023.6 1025.0 1018.5 1019.5 1018.9 1027.8 1031.3 1037.8 1036.0 1037.8 DAY 23 8 11 20 14 3 19 21 14 31 7 17 MIN. QFF PRESSURE IN HPA 1013.0 1015.7 1004.9 1001.8 1004.7 1005.2 1004.3 1003.2 1005.8 1011.2 1013.2 1006.0 1001.8 DAY 6 22 23 5 4 30 1 5 1 26 5 9 PRESSURE AT HOUR 0900 UTC. MEAN QFE PRESSURE IN HPA 1023.5 1026.4 1021.1 1016.0 1018.5 1012.9 1011.7 1012.8 1020.2 1019.4 1025.3 1023.2 1019.2 MAX. QFE PRESSURE IN HPA 1036.3 1036.3 1038.8 1025.6 1027.3 1020.6 1021.6 1020.6 1029.9 1033.4 1039.5 1037.7 1039.5 DAY 23 8 11 1 14 3 19 21 14 31 7 17 MIN. QFE PRESSURE IN HPA 1014.4 1017.5 1006.5 1001.8 1005.7 1007.3 1005.9 1005.4 1006.7 1012.6 1015.2 1008.3 1001.8 DAY 6 22 23 5 4 30 1 14 1 2 4 9 MEAN QNH PRESSURE IN HPA 1021.0 1023.9 1018.6 1013.6 1016.0 1010.4 1009.2 1010.3 1017.7 1016.9 1022.8 1020.7 1016.8 MAX. QNH PRESSURE IN HPA 1033.8 1033.8 1036.3 1023.1 1024.8 1018.1 1019.1 1018.1 1027.4 1030.9 1037.0 1035.2 1037.0 DAY 23 8 11 1 14 3 19 21 14 31 7 17 MIN. QNH PRESSURE IN HPA 1011.9 1015.0 1004.1 999.4 1003.3 1004.8 1003.5 1003.0 1004.3 1010.1 1012.7 1005.8 999.4 DAY 6 22 23 5 4 30 1 14 1 2 4 9 MEAN QFF PRESSURE IN HPA 1021.2 1024.1 1018.8 1013.9 1016.3 1010.8 1009.6 1010.7 1018.1 1017.3 1023.1 1020.9 1017.1 MAX. QFF PRESSURE IN HPA 1034.0 1034.0 1036.5 1023.4 1025.2 1018.5 1019.5 1018.5 1027.7 1031.2 1037.3 1035.4 1037.3 DAY 23 8 11 1 14 3 19 21 14 31 7 17 MIN. QFF PRESSURE IN HPA 1012.2 1015.2 1004.3 999.6 1003.6 1005.2 1003.9 1003.4 1004.6 1010.5 1013.0 1006.1 999.6 DAY 6 22 23 5 4 30 1 14 1 2 4 9 PRESSURE AT HOUR 1200 UTC. MEAN QFE PRESSURE IN HPA 1022.4 1025.2 1019.7 1015.0 1017.6 1012.2 1010.6 1011.6 1019.2 1018.4 1024.6 1022.5 1018.3 MAX. QFE PRESSURE IN HPA 1035.7 1034.9 1037.4 1024.7 1026.8 1019.4 1020.3 1020.3 1028.8 1033.0 1039.0 1037.3 1039.0 DAY 23 8 11 1 14 3 19 21 7 31 7 17 MIN. QFE PRESSURE IN HPA 1012.3 1016.1 1004.4 998.7 1008.1 1006.1 1005.2 1003.7 1004.5 1010.3 1014.2 1007.5 998.7 DAY 25 2 23 5 4 30 1 14 1 2 4 9 MEAN QNH PRESSURE IN HPA 1019.9 1022.7 1017.2 1012.5 1015.1 1009.8 1008.2 1009.2 1016.7 1015.9 1022.1 1020.0 1015.8 MAX. QNH PRESSURE IN HPA 1033.2 1032.4 1034.9 1022.2 1024.3 1016.9 1017.8 1017.8 1026.3 1030.5 1036.5 1034.8 1036.5 DAY 23 8 11 1 14 3 19 21 7 31 7 17 MIN. QNH PRESSURE IN HPA 1009.8 1013.6 1002.0 996.3 1005.6 1003.7 1002.8 1001.3 1002.1 1007.8 1011.7 1005.0 996.3 DAY 25 2 23 5 4 30 1 14 1 2 4 9 MEAN QFF PRESSURE IN HPA 1020.2 1023.0 1017.5 1012.8 1015.5 1010.1 1008.6 1009.6 1017.1 1016.2 1022.4 1020.3 1016.1 MAX. QFF PRESSURE IN HPA 1033.4 1032.6 1035.1 1022.5 1024.7 1017.3 1018.2 1018.2 1026.6 1030.8 1036.8 1035.0 1036.8 DAY 23 8 11 1 14 3 19 21 7 31 7 17 MIN. QFF PRESSURE IN HPA 1010.1 1013.9 1002.2 996.6 1006.0 1004.1 1003.2 1001.7 1002.4 1008.2 1012.0 1005.3 996.6 DAY 25 2 23 5 4 30 10 14 1 2 4 9 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ASTARA (40709) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 38 25 N LONGITUDE 48 52 E DATA PROCESSING CENTER ELEVATION -18.0 M MEANS AND EXTREMES FOR THE YEAR 1997 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 1500 UTC. MEAN QFE PRESSURE IN HPA 1023.2 1025.7 1019.9 1014.9 1017.0 1011.7 1010.3 1011.4 1019.3 1018.7 1025.1 1023.2 1018.4 MAX. QFE PRESSURE IN HPA 1036.4 1035.8 1036.9 1024.1 1025.3 1019.6 1019.0 1019.4 1028.9 1034.4 1039.6 1037.7 1039.6 DAY 23 8 11 1 14 3 19 21 7 31 7 17 MIN. QFE PRESSURE IN HPA 1012.1 1016.1 1005.0 999.8 1006.6 1005.1 1004.2 1003.8 1003.6 1010.7 1012.7 1009.7 999.8 DAY 29 2 23 5 3 30 1 14 1 2 4 9 MEAN QNH PRESSURE IN HPA 1020.7 1023.2 1017.5 1012.5 1014.6 1009.2 1007.9 1008.9 1016.8 1016.3 1022.6 1020.7 1015.9 MAX. QNH PRESSURE IN HPA 1033.9 1033.3 1034.4 1021.6 1022.8 1017.1 1016.5 1016.9 1026.4 1031.9 1037.1 1035.2 1037.1 DAY 23 8 11 1 14 3 19 21 7 31 7 17 MIN. QNH PRESSURE IN HPA 1009.6 1013.6 1002.6 997.4 1004.2 1002.7 1001.8 1001.4 1001.2 1008.2 1010.2 1007.2 997.4 DAY 29 2 23 5 3 30 1 14 1 2 4 9 MEAN QFF PRESSURE IN HPA 1020.9 1023.4 1017.7 1012.7 1014.9 1009.6 1008.3 1009.3 1017.1 1016.6 1022.9 1021.0 1016.2 MAX. QFF PRESSURE IN HPA 1034.1 1033.5 1034.6 1021.9 1023.1 1017.4 1016.9 1017.3 1026.7 1032.2 1037.3 1035.4 1037.3 DAY 23 8 11 1 14 3 19 21 7 31 7 17 MIN. QFF PRESSURE IN HPA 1009.8 1013.9 1002.8 997.7 1004.5 1003.1 1002.2 1001.8 1001.5 1008.6 1010.5 1007.5 997.7 DAY 29 2 23 5 3 30 1 14 1 2 4 9 PRESSURE AT HOUR 1800 UTC. MEAN QFE PRESSURE IN HPA 1023.8 1026.4 1020.5 1015.8 1017.7 1012.5 1011.2 1012.2 1020.3 1019.3 1025.1 1023.5 1019.0 MAX. QFE PRESSURE IN HPA 1036.2 1036.2 1037.3 1024.3 1026.3 1020.8 1019.6 1020.4 1029.6 1034.7 1039.8 1036.3 1039.8 DAY 23 8 10 1 13 3 19 20 7 31 7 17 MIN. QFE PRESSURE IN HPA 1012.4 1016.4 1005.1 1002.3 1005.5 1006.2 1005.3 1004.1 1004.0 1012.4 1011.6 1009.0 1002.3 DAY 29 2 23 5 3 12 1 12 1 2 4 8 MEAN QNH PRESSURE IN HPA 1021.4 1023.9 1018.1 1013.4 1015.3 1010.0 1008.7 1009.8 1017.9 1016.8 1022.7 1021.1 1016.6 MAX. QNH PRESSURE IN HPA 1033.7 1033.7 1034.8 1021.8 1023.8 1018.3 1017.1 1017.9 1027.1 1032.2 1037.3 1033.8 1037.3 DAY 23 8 10 1 13 3 19 20 7 31 7 17 MIN. QNH PRESSURE IN HPA 1009.9 1013.9 1002.7 999.9 1003.1 1003.8 1002.9 1001.7 1001.6 1009.9 1009.1 1006.5 999.9 DAY 29 2 23 5 3 12 1 12 1 2 4 8 MEAN QFF PRESSURE IN HPA 1021.6 1024.1 1018.3 1013.7 1015.6 1010.4 1009.1 1010.2 1018.2 1017.2 1022.9 1021.3 1016.9 MAX. QFF PRESSURE IN HPA 1033.9 1033.9 1035.0 1022.1 1024.2 1018.6 1017.5 1018.3 1027.4 1032.5 1037.5 1034.0 1037.5 DAY 23 8 10 1 13 3 19 20 7 31 7 17 MIN. QFF PRESSURE IN HPA 1010.1 1014.2 1003.0 1000.2 1003.4 1004.1 1003.3 1002.1 1002.0 1010.3 1009.5 1006.8 1000.2 DAY 29 2 23 5 3 12 1 12 1 2 4 8 PRESSURE AT HOUR 2100 UTC. MEAN QFE PRESSURE IN HPA 1023.6 1026.0 1020.1 1015.3 1017.3 1012.4 1011.2 1012.3 1020.1 1019.1 1024.9 1023.1 1018.8 MAX. QFE PRESSURE IN HPA 1035.3 1035.3 1037.3 1024.8 1025.9 1020.4 1018.4 1020.7 1028.8 1034.6 1039.1 1034.7 1039.1 DAY 23 20 10 19 13 3 19 20 6 31 7 17 MIN. QFE PRESSURE IN HPA 1013.5 1018.0 1005.1 1004.0 1004.7 1005.7 1004.8 1004.1 1004.0 1012.5 1010.1 1008.8 1004.0 DAY 29 2 23 5 3 12 10 12 1 13 4 8 MEAN QNH PRESSURE IN HPA 1021.2 1023.5 1017.6 1012.8 1014.8 1010.0 1008.8 1009.8 1017.6 1016.7 1022.5 1020.7 1016.3 MAX. QNH PRESSURE IN HPA 1032.8 1032.8 1034.8 1022.3 1023.4 1017.9 1015.9 1018.2 1026.3 1032.1 1036.6 1032.2 1036.6 DAY 23 20 10 19 13 3 19 20 6 31 7 17 MIN. QNH PRESSURE IN HPA 1011.0 1015.5 1002.7 1001.6 1002.3 1003.3 1002.4 1001.7 1001.6 1010.0 1007.6 1006.3 1001.6 DAY 29 2 23 5 3 12 10 12 1 13 4 8 MEAN QFF PRESSURE IN HPA 1021.4 1023.7 1017.9 1013.1 1015.2 1010.3 1009.2 1010.2 1018.0 1017.0 1022.7 1020.9 1016.6 MAX. QFF PRESSURE IN HPA 1033.0 1033.0 1035.0 1022.6 1023.8 1018.3 1016.3 1018.6 1026.6 1032.4 1036.8 1032.4 1036.8 DAY 23 20 10 19 13 3 19 20 6 31 7 17 MIN. QFF PRESSURE IN HPA 1011.3 1015.7 1002.9 1001.9 1002.6 1003.6 1002.8 1002.1 1002.0 1010.4 1008.0 1006.6 1001.9 DAY 29 22 23 5 3 12 10 12 1 13 4 8 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ASTARA (40709) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 38 25 N LONGITUDE 48 52 E DATA PROCESSING CENTER ELEVATION -18.0 M MEANS AND EXTREMES FOR THE YEAR 1998 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AIR TEMPERATURE (C) 5.1 4.2 8.2 14.7 19.5 25.4 25.8 26.0 21.3 16.9 12.7 9.2 15.7 MINIMUN AIR TEMPERATURE (C) 2.7 1.1 5.2 11.0 15.3 20.3 21.3 21.9 18.6 13.7 10.4 7.2 12.4 DAYS WITH MINIMUM TEMP. >=21 0 0 0 0 0 12 16 27 2 0 0 0 57 DAYS WITH MINIMUM TEMP. <=-4 0 0 0 0 0 0 0 0 0 0 0 0 0 DAYS WITH FREEZING MIN.<= 0 2 11 0 0 0 0 0 0 0 0 0 0 13 TEMPERATURE RECORDS LOWEST(C) 0.0 -3.2 0.4 5.4 9.8 17.4 19.0 18.4 15.0 10.2 7.6 3.0 -3.2 DAY 10 17 3 2 2 4 26 23 29 12 30 29 MAXIMUM AIR TEMPERATURE (C) 7.6 8.1 11.3 18.7 23.2 29.6 30.3 30.3 24.1 20.5 15.3 12.4 19.3 DAYS WITH MAXIMUM TEMP. >=30 0 0 0 0 1 14 18 22 1 0 0 0 56 DAYS WITH MAXIMUM TEMP. <= 0 0 0 0 0 0 0 0 0 0 0 0 0 0 TEMPERATURE RECORDS HIGHEST(C) 12.6 20.6 22.2 29.0 30.2 34.0 33.6 35.6 30.8 28.2 21.0 29.0 35.6 DAY 7 7 13 14 21 17 25 4 1 1 6 11 DIF. BETWEEN (MAX.-MIN.) (C) 4.9 7.0 6.1 7.7 7.9 9.3 9.0 8.4 5.5 6.8 4.9 5.2 6.9 MEAN DAILY TEMP. (MDT) (C) 5.2 4.6 8.2 14.8 19.2 25.0 25.8 26.1 21.3 17.1 12.9 9.8 15.8 COOLING DEG. DAYS(BASE 21 0C) 0.0 0.0 0.0 0.0 7.3 119.3 149.0 158.4 33.7 3.2 0.0 0.0 470.9 HEATING DEG. DAYS(BASE 18 0C) 397.8 375.3 303.1 99.8 18.2 0.0 0.0 0.0 1.1 50.6 153.9 255.2 1654.9 DEWPOINT (MEAN C) 2.4 1.3 5.5 10.7 15.4 19.2 20.1 20.7 18.5 14.5 11.2 7.0 12.2 MIXING RATIO (G/KG) 4.46 4.18 5.63 8.09 11.05 14.13 14.91 15.50 13.47 10.39 8.32 6.19 9.69 VAPOUR PRESSURE (HPA) 7.30 6.84 9.14 13.06 17.75 22.53 23.67 24.64 21.55 16.78 13.50 10.11 15.57 SATURATION DEF. (HPA) 1.52 1.60 1.88 4.08 5.26 10.43 10.04 9.74 4.12 2.99 1.42 1.76 4.57 RELATIVE HUMIDITY (MEAN %) 84 83 84 78 79 71 73 75 85 86 91 87 81 RELATIVE HUMIDITY (MAX. %) 92 94 93 90 91 87 89 88 94 95 96 95 92 RELATIVE HUMIDITY (MIN. %) 71 67 74 64 64 55 55 58 74 72 82 75 68 RELATIVE HUMIDITY (MEAN% 03UTC) 86 89 89 88 83 78 82 82 91 93 94 89 87 RELATIVE HUMIDITY (MEAN% 09UTC) 74 73 78 70 70 61 60 64 77 77 84 81 72 RELATIVE HUMIDITY (MEAN% 15UTC) 85 85 86 76 76 68 65 72 84 91 93 88 81 RH=0 => RELATIVE HUMIDITY < 0.5% AMOUNT OF PRECIPITATION MM. 129.6 212.8 93.4 63.2 49.4 41.0 44.5 95.5 244.8 342.8 217.3 169.6 1703.9 DAYS WITH PRECIPITATION >=10 5 6 4 2 1 2 1 5 8 6 10 4 54 DAYS WITH PRECIPITATION >= 5 8 6 4 5 2 2 1 5 10 7 12 7 69 DAYS WITH PRECIPITATION >= 1 14 10 8 10 8 3 4 8 12 11 16 10 114 DAYS WITH PRECIPITATION 19 17 13 14 10 5 7 9 15 13 18 13 153 GREATEST DAILY PRECIPITATION 30.0 47.0 38.0 16.0 23.4 23.0 37.6 27.0 78.0 94.0 37.6 73.0 94.0 DAY 2 19 31 28 29 24 7 18 3 9 9 2 DAY WITH THUNDER STORM 0 0 0 3 6 7 2 3 4 3 0 0 28 DAYS WITH SNOW OR SLEET 0 11 0 0 0 0 0 0 0 0 0 0 11 DAYS WITH DUST 0 0 0 0 0 0 0 0 0 0 0 0 0 WIND DIRECTION (PREVAILING) 360 135 135 135 135 135 135 45 315 90 90 315 135 PREVAILING WIND SPEED(KNOTS) 4.9 5.2 8.0 5.9 6.4 4.7 6.0 5.8 6.0 6.5 7.8 6.3 6.0 PREVAILING WIND PERCENT 14.1 6.7 16.5 11.3 21.8 13.8 10.1 7.7 10.0 6.9 4.2 5.2 8.4 CALMS PERCENT OF WIND 64.5 74.6 58.9 68.8 63.7 65.8 66.1 66.1 69.2 80.6 80.4 80.2 69.9 NO. OF WIND OBSERVATION 248 224 248 240 248 240 248 248 240 248 240 248 2920 VECTOR WIND DIRECTION (MEAN) 344 12 138 109 145 112 112 64 339 65 359 269 104 VECTOR WIND MAGNITUDE(KNOTS) 1.2 0.3 1.6 0.9 1.6 1.2 0.5 0.6 0.4 0.6 0.1 0.8 0.4 WIND STEADINESES (MEAN %) 63.2 21.4 55.2 47.4 69.6 70.6 25.0 33.3 22.2 50.0 7.7 61.5 22.2 WIND SPEED (MEAN KNOTS) 1.9 1.4 2.9 1.9 2.3 1.7 2.0 1.8 1.8 1.2 1.3 1.3 1.8 FASTEST WIND DIRECTION 320 340 270 60 270 100 290 330 270 320 80 260 270 FASTEST WIND SPEED (KNOTS) 16 14 19 17 23 14 14 12 12 14 17 23 23 DAY 9 8 22 24 21 29 14 8 11 22 17 11 DAYS WITH SKY CLEAR (0-2)/8 2 11 6 8 4 18 15 15 8 9 5 3 104 DAYS WITH P.CLOUDY (3-6)/8 6 6 5 6 20 8 10 7 3 5 4 9 89 DAYS WITH CLOUDY (7-8)/8 23 11 19 16 7 4 6 9 19 17 21 19 171 DAYS WITH VISIBILITY =< 2 KM 11 10 9 1 0 0 1 2 8 6 6 3 57 DURATION OF SUNSHINE HOURS 73.4 138.3 110.1 171.9 240.7 284.4 263.1 217.9 99.6 128.6 68.4 71.9 1868.3 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ASTARA (40709) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 38 25 N LONGITUDE 48 52 E DATA PROCESSING CENTER ELEVATION -18.0 M MEANS AND EXTREMES FOR THE YEAR 1998 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL MEAN QFE PRESSURE IN HPA 1024.3 1025.2 1019.8 1017.6 1017.9 1015.0 1011.8 1013.9 1017.6 1022.9 1024.1 1026.7 1019.7 MAX. QFE PRESSURE IN HPA 1036.2 1042.0 1034.0 1028.9 1029.7 1021.0 1022.7 1020.7 1026.7 1040.0 1037.2 1037.9 1042.0 DAY-HOUR 22- 6 22- 6 26- 6 11-21 3- 9 16-18 20- 6 19- 6 12- 6 9- 6 23-15 3- 6 MIN. QFE PRESSURE IN HPA 1008.2 1003.2 1004.2 1006.6 1002.9 1007.0 997.6 1007.2 1007.5 1004.2 1012.8 1013.5 997.6 DAY-HOUR 30- 0 14- 0 30- 0 21- 0 21- 0 22-21 5-15 30-21 23-18 1-12 1-12 10-21 MEAN QNH PRESSURE IN HPA 1021.8 1022.7 1017.3 1015.1 1015.4 1012.5 1009.3 1011.4 1015.2 1020.4 1021.6 1024.2 1017.3 MAX. QNH PRESSURE IN HPA 1033.7 1039.5 1031.5 1026.4 1027.2 1018.5 1020.2 1018.2 1024.2 1037.5 1034.7 1035.4 1039.5 DAY-HOUR 22- 6 22- 6 26- 6 11-21 3- 9 16-18 20- 6 19- 6 12- 6 9- 6 23-15 3- 6 MIN. QNH PRESSURE IN HPA 1005.7 1000.8 1001.8 1004.2 1000.5 1004.5 995.2 1004.7 1005.0 1001.8 1010.3 1011.0 995.2 DAY-HOUR 30- 0 14- 0 30- 0 21- 0 21- 0 22-21 5-15 30-21 23-18 1-12 1-12 10-21 MEAN QFF PRESSURE IN HPA 1022.0 1022.9 1017.6 1015.4 1015.8 1012.9 1009.7 1011.8 1015.5 1020.8 1021.9 1024.5 1017.6 MAX. QFF PRESSURE IN HPA 1033.9 1039.7 1031.7 1026.8 1027.5 1018.9 1020.6 1018.6 1024.5 1037.8 1035.0 1035.6 1039.7 DAY-HOUR 22- 6 22- 6 26- 6 11-21 3- 9 16-18 20- 6 19- 6 12- 6 9- 6 23-18 3- 6 MIN. QFF PRESSURE IN HPA 1006.0 1001.0 1002.0 1004.5 1000.8 1005.0 995.6 1005.2 1005.4 1002.1 1010.7 1011.3 995.6 DAY-HOUR 30- 3 14- 0 30- 0 21- 0 21- 0 22-21 5-15 30-21 23-21 1-12 1-12 10-21 PRESSURE AT HOUR 0000 UTC. MEAN QFE PRESSURE IN HPA 1023.8 1024.7 1019.3 1017.1 1017.6 1014.5 1011.6 1013.8 1017.4 1022.4 1023.9 1026.6 1019.4 MAX. QFE PRESSURE IN HPA 1034.4 1038.5 1031.5 1028.5 1027.9 1020.9 1020.7 1019.0 1025.5 1038.9 1036.0 1036.5 1038.9 DAY 22 22 26 12 3 17 20 19 12 9 24 3 MIN. QFE PRESSURE IN HPA 1008.2 1003.2 1004.2 1006.6 1002.9 1007.5 1001.3 1008.2 1008.1 1007.9 1015.6 1013.6 1001.3 DAY 30 14 30 21 21 23 6 31 24 1 16 11 MEAN QNH PRESSURE IN HPA 1021.4 1022.3 1016.9 1014.7 1015.1 1012.0 1009.2 1011.4 1015.0 1019.9 1021.5 1024.1 1016.9 MAX. QNH PRESSURE IN HPA 1031.9 1036.0 1029.0 1026.0 1025.4 1018.4 1018.2 1016.5 1023.0 1036.4 1033.5 1034.0 1036.4 DAY 22 22 26 12 3 17 20 19 12 9 24 3 MIN. QNH PRESSURE IN HPA 1005.7 1000.8 1001.8 1004.2 1000.5 1005.0 998.9 1005.7 1005.6 1005.4 1013.1 1011.1 998.9 DAY 30 14 30 21 21 23 6 31 24 1 16 11 MEAN QFF PRESSURE IN HPA 1021.6 1022.5 1017.1 1015.0 1015.4 1012.4 1009.5 1011.8 1015.3 1020.2 1021.8 1024.3 1017.2 MAX. QFF PRESSURE IN HPA 1032.1 1036.2 1029.2 1026.3 1025.7 1018.8 1018.6 1016.9 1023.3 1036.7 1033.8 1034.2 1036.7 DAY 22 22 26 12 3 17 20 19 12 9 24 3 MIN. QFF PRESSURE IN HPA 1006.0 1001.0 1002.0 1004.5 1000.8 1005.5 999.3 1006.2 1006.0 1005.8 1013.4 1011.4 999.3 DAY 30 14 30 21 21 23 6 31 24 1 16 11 PRESSURE AT HOUR 0300 UTC. MEAN QFE PRESSURE IN HPA 1024.0 1024.7 1019.8 1017.7 1018.1 1015.3 1012.2 1014.4 1017.9 1023.0 1024.4 1026.5 1019.8 MAX. QFE PRESSURE IN HPA 1034.9 1039.7 1031.9 1028.3 1028.6 1020.3 1021.8 1019.8 1025.7 1039.5 1035.3 1037.3 1039.7 DAY 22 22 26 12 2 17 20 19 27 9 23 3 MIN. QFE PRESSURE IN HPA 1008.2 1004.3 1004.5 1009.2 1003.4 1010.5 1002.3 1010.0 1009.3 1008.2 1015.0 1014.2 1002.3 DAY 30 14 30 21 21 23 6 23 24 1 1 11 MEAN QNH PRESSURE IN HPA 1021.5 1022.2 1017.3 1015.2 1015.6 1012.8 1009.8 1011.9 1015.5 1020.5 1021.9 1024.0 1017.3 MAX. QNH PRESSURE IN HPA 1032.4 1037.2 1029.4 1025.8 1026.1 1017.8 1019.3 1017.3 1023.2 1037.0 1032.8 1034.8 1037.2 DAY 22 22 26 12 2 17 20 19 27 9 23 3 MIN. QNH PRESSURE IN HPA 1005.7 1001.9 1002.1 1006.7 1001.0 1008.0 999.9 1007.5 1006.8 1005.7 1012.5 1011.7 999.9 DAY 30 14 30 21 21 23 6 23 24 1 1 11 MEAN QFF PRESSURE IN HPA 1021.7 1022.4 1017.6 1015.5 1016.0 1013.2 1010.2 1012.3 1015.8 1020.8 1022.2 1024.2 1017.7 MAX. QFF PRESSURE IN HPA 1032.6 1037.4 1029.6 1026.1 1026.4 1018.2 1019.7 1017.7 1023.6 1037.3 1033.1 1035.0 1037.4 DAY 22 22 26 12 2 17 20 19 27 9 23 3 MIN. QFF PRESSURE IN HPA 1006.0 1002.1 1002.3 1007.1 1001.3 1008.4 1000.3 1007.9 1007.2 1006.1 1012.9 1012.1 1000.3 DAY 30 14 30 21 21 23 6 23 24 1 1 11 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ASTARA (40709) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 38 25 N LONGITUDE 48 52 E DATA PROCESSING CENTER ELEVATION -18.0 M MEANS AND EXTREMES FOR THE YEAR 1998 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 0600 UTC. MEAN QFE PRESSURE IN HPA 1025.2 1025.8 1020.8 1018.5 1018.9 1016.0 1012.7 1014.8 1018.6 1024.1 1025.3 1027.4 1020.7 MAX. QFE PRESSURE IN HPA 1036.2 1042.0 1034.0 1028.9 1029.4 1020.4 1022.7 1020.7 1026.7 1040.0 1036.2 1037.9 1042.0 DAY 22 22 26 12 3 17 20 19 12 9 24 3 MIN. QFE PRESSURE IN HPA 1011.3 1006.6 1006.7 1010.4 1005.2 1011.4 1002.5 1010.1 1010.2 1008.1 1015.4 1017.1 1002.5 DAY 30 7 30 21 21 23 6 26 24 1 1 21 MEAN QNH PRESSURE IN HPA 1022.7 1023.3 1018.3 1016.1 1016.4 1013.5 1010.2 1012.3 1016.2 1021.6 1022.8 1024.9 1018.2 MAX. QNH PRESSURE IN HPA 1033.7 1039.5 1031.5 1026.4 1026.9 1017.9 1020.2 1018.2 1024.2 1037.5 1033.7 1035.4 1039.5 DAY 22 22 26 12 3 17 20 19 12 9 24 3 MIN. QNH PRESSURE IN HPA 1008.8 1004.2 1004.3 1007.9 1002.8 1008.9 1000.1 1007.6 1007.7 1005.6 1012.9 1014.6 1000.1 DAY 30 7 30 21 21 23 6 26 24 1 1 21 MEAN QFF PRESSURE IN HPA 1022.9 1023.5 1018.5 1016.4 1016.8 1013.9 1010.6 1012.7 1016.5 1021.9 1023.1 1025.2 1018.5 MAX. QFF PRESSURE IN HPA 1033.9 1039.7 1031.7 1026.7 1027.3 1018.3 1020.6 1018.6 1024.5 1037.8 1034.0 1035.6 1039.7 DAY 22 22 26 12 9 17 20 19 12 9 24 3 MIN. QFF PRESSURE IN HPA 1009.1 1004.4 1004.5 1008.3 1003.1 1009.4 1000.5 1008.1 1008.1 1006.0 1013.3 1014.9 1000.5 DAY 30 7 30 21 21 23 6 26 24 1 1 21 PRESSURE AT HOUR 0900 UTC. MEAN QFE PRESSURE IN HPA 1024.5 1025.4 1020.1 1018.1 1018.5 1015.7 1012.3 1014.3 1018.0 1023.3 1024.3 1026.4 1020.1 MAX. QFE PRESSURE IN HPA 1035.8 1041.4 1031.9 1027.1 1029.7 1020.0 1022.4 1020.0 1025.9 1039.6 1036.1 1036.6 1041.4 DAY 22 22 26 1 3 5 20 19 11 9 23 3 MIN. QFE PRESSURE IN HPA 1012.4 1005.1 1006.2 1009.3 1005.1 1010.3 1001.2 1009.0 1009.8 1006.4 1013.6 1016.7 1001.2 DAY 30 7 30 21 21 22 5 26 1 1 1 23 MEAN QNH PRESSURE IN HPA 1022.0 1022.9 1017.6 1015.7 1016.1 1013.2 1009.8 1011.9 1015.6 1020.8 1021.8 1023.9 1017.6 MAX. QNH PRESSURE IN HPA 1033.3 1038.9 1029.4 1024.6 1027.2 1017.5 1019.9 1017.5 1023.4 1037.1 1033.6 1034.1 1038.9 DAY 22 22 26 1 3 5 20 19 11 9 23 3 MIN. QNH PRESSURE IN HPA 1009.9 1002.7 1003.8 1006.8 1002.7 1007.8 998.8 1006.5 1007.3 1004.0 1011.1 1014.2 998.8 DAY 30 7 30 21 21 22 5 26 1 1 1 23 MEAN QFF PRESSURE IN HPA 1022.3 1023.1 1017.8 1016.0 1016.4 1013.6 1010.2 1012.3 1015.9 1021.1 1022.1 1024.2 1017.9 MAX. QFF PRESSURE IN HPA 1033.5 1039.1 1029.7 1024.9 1027.5 1017.9 1020.3 1017.9 1023.7 1037.4 1033.9 1034.3 1039.1 DAY 22 22 26 1 3 6 20 19 11 9 23 3 MIN. QFF PRESSURE IN HPA 1010.2 1002.9 1004.0 1007.2 1003.0 1008.3 999.2 1007.0 1007.8 1004.3 1011.5 1014.5 999.2 DAY 30 7 30 21 21 22 5 26 1 1 1 23 PRESSURE AT HOUR 1200 UTC. MEAN QFE PRESSURE IN HPA 1023.7 1024.5 1019.1 1017.3 1017.7 1014.8 1011.4 1013.3 1017.1 1022.4 1023.3 1025.8 1019.2 MAX. QFE PRESSURE IN HPA 1034.5 1040.4 1030.0 1025.7 1029.1 1019.6 1021.0 1018.6 1025.5 1038.3 1035.3 1035.7 1040.4 DAY 22 22 26 1 3 16 20 19 11 9 23 3 MIN. QFE PRESSURE IN HPA 1012.2 1005.7 1006.8 1008.0 1003.7 1009.1 998.4 1008.4 1008.6 1004.2 1012.8 1016.3 998.4 DAY 30 7 29 21 21 22 5 26 1 1 1 10 MEAN QNH PRESSURE IN HPA 1021.3 1022.0 1016.6 1014.8 1015.2 1012.3 1008.9 1010.9 1014.6 1019.9 1020.8 1023.4 1016.7 MAX. QNH PRESSURE IN HPA 1032.0 1037.9 1027.5 1023.2 1026.6 1017.1 1018.5 1016.1 1023.0 1035.8 1032.8 1033.2 1037.9 DAY 22 22 26 1 3 16 20 19 11 9 23 3 MIN. QNH PRESSURE IN HPA 1009.7 1003.3 1004.4 1005.5 1001.3 1006.6 996.0 1005.9 1006.1 1001.8 1010.3 1013.8 996.0 DAY 30 7 29 21 21 22 5 26 1 1 1 10 MEAN QFF PRESSURE IN HPA 1021.5 1022.2 1016.9 1015.1 1015.6 1012.7 1009.3 1011.3 1015.0 1020.2 1021.1 1023.6 1017.0 MAX. QFF PRESSURE IN HPA 1032.2 1038.1 1027.8 1023.5 1026.9 1017.5 1018.9 1016.5 1023.3 1036.1 1033.1 1033.4 1038.1 DAY 22 22 26 1 3 16 20 19 11 9 23 3 MIN. QFF PRESSURE IN HPA 1010.0 1003.5 1004.6 1005.9 1001.6 1007.1 996.4 1006.4 1006.5 1002.1 1010.7 1014.1 996.4 DAY 30 7 29 21 21 22 5 26 23 1 1 10 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ASTARA (40709) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 38 25 N LONGITUDE 48 52 E DATA PROCESSING CENTER ELEVATION -18.0 M MEANS AND EXTREMES FOR THE YEAR 1998 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 1500 UTC. MEAN QFE PRESSURE IN HPA 1024.4 1025.3 1019.5 1017.2 1017.4 1014.3 1011.0 1012.9 1016.9 1022.6 1023.8 1026.9 1019.3 MAX. QFE PRESSURE IN HPA 1034.0 1040.4 1031.7 1026.3 1028.8 1020.0 1020.1 1018.2 1025.1 1037.8 1037.2 1036.9 1040.4 DAY 22 22 3 11 2 16 20 18 11 9 23 2 MIN. QFE PRESSURE IN HPA 1012.2 1006.5 1005.2 1008.4 1004.5 1008.3 997.6 1007.9 1007.7 1005.2 1013.2 1015.6 997.6 DAY 29 13 29 18 21 22 5 30 23 1 1 10 MEAN QNH PRESSURE IN HPA 1021.9 1022.8 1017.0 1014.7 1014.9 1011.9 1008.5 1010.4 1014.4 1020.1 1021.3 1024.4 1016.9 MAX. QNH PRESSURE IN HPA 1031.5 1037.9 1029.2 1023.8 1026.3 1017.5 1017.6 1015.7 1022.6 1035.3 1034.7 1034.4 1037.9 DAY 22 22 3 11 2 16 20 18 11 9 23 2 MIN. QNH PRESSURE IN HPA 1009.7 1004.1 1002.8 1005.9 1002.1 1005.8 995.2 1005.4 1005.2 1002.8 1010.7 1013.1 995.2 DAY 29 13 29 18 21 22 5 30 23 1 1 10 MEAN QFF PRESSURE IN HPA 1022.1 1023.0 1017.2 1015.0 1015.3 1012.3 1008.9 1010.8 1014.7 1020.4 1021.6 1024.6 1017.2 MAX. QFF PRESSURE IN HPA 1031.7 1038.1 1029.4 1024.1 1026.6 1017.9 1018.0 1016.1 1022.9 1035.6 1035.0 1034.6 1038.1 DAY 22 22 3 11 2 16 20 19 11 9 23 2 MIN. QFF PRESSURE IN HPA 1010.0 1004.3 1003.0 1006.3 1002.5 1006.3 995.6 1005.9 1005.6 1003.1 1011.1 1013.4 995.6 DAY 29 13 29 18 21 22 5 30 23 1 1 10 PRESSURE AT HOUR 1800 UTC. MEAN QFE PRESSURE IN HPA 1024.4 1025.8 1020.3 1017.8 1017.8 1015.0 1011.8 1013.8 1017.7 1022.9 1023.9 1027.3 1019.9 MAX. QFE PRESSURE IN HPA 1034.0 1040.9 1032.0 1028.5 1029.0 1021.0 1020.7 1018.6 1025.9 1037.8 1037.2 1037.2 1040.9 DAY 22 22 25 11 9 16 19 18 11 9 23 2 MIN. QFE PRESSURE IN HPA 1010.8 1005.3 1004.6 1009.4 1004.5 1008.3 998.9 1008.1 1007.5 1007.5 1013.5 1014.6 998.9 DAY 29 13 29 18 21 22 5 30 23 1 18 10 MEAN QNH PRESSURE IN HPA 1022.0 1023.3 1017.8 1015.3 1015.3 1012.5 1009.3 1011.4 1015.2 1020.4 1021.4 1024.8 1017.4 MAX. QNH PRESSURE IN HPA 1031.5 1038.4 1029.5 1026.0 1026.5 1018.5 1018.2 1016.1 1023.4 1035.3 1034.7 1034.7 1038.4 DAY 22 22 25 11 9 16 19 18 11 9 23 2 MIN. QNH PRESSURE IN HPA 1008.3 1002.9 1002.2 1006.9 1002.1 1005.8 996.5 1005.6 1005.0 1005.0 1011.0 1012.1 996.5 DAY 29 13 29 18 21 22 5 30 23 1 18 10 MEAN QFF PRESSURE IN HPA 1022.2 1023.5 1018.0 1015.6 1015.7 1012.9 1009.7 1011.8 1015.6 1020.8 1021.7 1025.1 1017.7 MAX. QFF PRESSURE IN HPA 1031.7 1038.6 1029.7 1026.3 1026.8 1018.9 1018.6 1016.5 1023.7 1035.6 1035.0 1034.9 1038.6 DAY 22 22 25 11 9 16 19 18 11 9 23 2 MIN. QFF PRESSURE IN HPA 1008.6 1003.1 1002.4 1007.3 1002.4 1006.3 996.9 1006.1 1005.4 1005.4 1011.3 1012.4 996.9 DAY 29 13 29 18 21 22 5 30 23 1 18 10 PRESSURE AT HOUR 2100 UTC. MEAN QFE PRESSURE IN HPA 1024.2 1025.3 1019.8 1017.3 1017.4 1014.7 1011.7 1013.7 1017.5 1022.8 1023.9 1027.1 1019.6 MAX. QFE PRESSURE IN HPA 1033.3 1038.3 1031.4 1028.9 1028.8 1021.0 1020.7 1019.0 1026.1 1038.4 1035.6 1037.2 1038.4 DAY 21 22 25 11 2 16 19 18 11 8 23 2 MIN. QFE PRESSURE IN HPA 1008.8 1003.7 1004.6 1006.8 1003.4 1007.0 1000.3 1007.2 1007.5 1009.7 1013.7 1013.5 1000.3 DAY 29 13 29 20 20 22 5 30 23 1 18 10 MEAN QNH PRESSURE IN HPA 1021.7 1022.8 1017.4 1014.9 1015.0 1012.2 1009.2 1011.3 1015.0 1020.4 1021.4 1024.6 1017.1 MAX. QNH PRESSURE IN HPA 1030.8 1035.8 1028.9 1026.4 1026.3 1018.5 1018.2 1016.5 1023.6 1035.9 1033.1 1034.7 1035.9 DAY 21 22 25 11 2 16 19 18 11 8 23 2 MIN. QNH PRESSURE IN HPA 1006.3 1001.3 1002.2 1004.4 1001.0 1004.5 997.9 1004.7 1005.0 1007.2 1011.2 1011.0 997.9 DAY 29 13 29 20 20 22 5 30 23 1 18 10 MEAN QFF PRESSURE IN HPA 1021.9 1023.0 1017.6 1015.2 1015.3 1012.6 1009.6 1011.7 1015.4 1020.7 1021.7 1024.8 1017.5 MAX. QFF PRESSURE IN HPA 1031.0 1036.0 1029.1 1026.8 1026.6 1018.9 1018.6 1016.9 1023.9 1036.2 1033.4 1034.9 1036.2 DAY 21 22 25 11 2 16 19 18 11 8 23 2 MIN. QFF PRESSURE IN HPA 1006.6 1001.5 1002.4 1004.7 1001.3 1005.0 998.3 1005.2 1005.4 1007.6 1011.6 1011.3 998.3 DAY 29 13 29 20 20 22 5 30 23 1 18 10 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ASTARA (40709) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 38 25 N LONGITUDE 48 52 E DATA PROCESSING CENTER ELEVATION -18.0 M MEANS AND EXTREMES FOR THE YEAR 1999 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AIR TEMPERATURE (C) 6.6 9.3 9.6 13.2 16.7 22.7 25.2 26.4 21.6 17.3 10.3 9.1 15.7 MINIMUN AIR TEMPERATURE (C) 3.8 5.3 6.9 9.8 13.0 18.0 20.6 22.8 18.9 14.1 7.6 5.9 12.2 DAYS WITH MINIMUM TEMP. >=21 0 0 0 0 0 3 18 28 5 0 0 0 54 DAYS WITH MINIMUM TEMP. <=-4 0 0 0 0 0 0 0 0 0 0 0 0 0 DAYS WITH FREEZING MIN.<= 0 0 0 0 0 0 0 0 0 0 0 0 0 0 TEMPERATURE RECORDS LOWEST(C) 0.4 2.2 2.0 5.0 8.8 14.5 15.5 20.0 13.5 9.5 2.0 1.0 0.4 DAY 4 1 19 10 11 3 15 31 24 27 29 2 MAXIMUM AIR TEMPERATURE (C) 10.2 14.2 12.4 16.8 20.4 26.7 29.8 30.0 25.1 21.2 14.2 12.9 19.5 DAYS WITH MAXIMUM TEMP. >=30 0 0 0 0 0 3 15 21 1 0 0 0 40 DAYS WITH MAXIMUM TEMP. <= 0 0 0 0 0 0 0 0 0 0 0 0 0 0 TEMPERATURE RECORDS HIGHEST(C) 19.5 24.5 15.0 21.4 26.6 31.4 33.0 35.5 30.0 25.8 22.6 25.4 35.5 DAY 11 20 4 18 27 14 10 3 2 1 16 28 DIF. BETWEEN (MAX.-MIN.) (C) 6.4 8.9 5.5 7.0 7.4 8.7 9.2 7.2 6.2 7.1 6.6 7.0 7.3 MEAN DAILY TEMP. (MDT) (C) 7.0 9.8 9.6 13.3 16.7 22.3 25.2 26.4 22.0 17.7 10.9 9.4 15.9 COOLING DEG. DAYS(BASE 21 0C) 0.0 0.0 0.0 0.0 0.4 47.2 130.8 167.6 45.3 3.3 0.0 0.0 394.7 HEATING DEG. DAYS(BASE 18 0C) 341.9 230.6 259.3 140.3 61.7 0.0 0.0 0.0 0.0 48.5 213.7 266.9 1563.0 DEWPOINT (MEAN C) 4.4 4.6 6.9 9.8 13.1 16.1 19.3 22.5 18.3 14.3 7.3 6.1 11.9 MIXING RATIO (G/KG) 5.17 5.32 6.19 7.58 9.45 11.65 14.23 17.42 13.31 10.37 6.40 5.80 9.41 VAPOUR PRESSURE (HPA) 8.44 8.63 10.06 12.27 15.24 18.62 22.62 27.54 21.29 16.71 10.43 9.48 15.11 SATURATION DEF. (HPA) 1.42 3.41 2.00 3.15 4.20 9.44 10.02 7.31 4.96 3.67 2.36 2.32 4.52 RELATIVE HUMIDITY (MEAN %) 87 76 84 81 81 68 72 81 82 84 83 84 80 RELATIVE HUMIDITY (MAX. %) 95 89 94 93 93 85 88 93 93 95 93 95 92 RELATIVE HUMIDITY (MIN. %) 74 58 72 67 66 51 55 65 68 68 67 69 65 RELATIVE HUMIDITY (MEAN% 03UTC) 91 83 90 89 88 77 81 87 89 91 86 90 87 RELATIVE HUMIDITY (MEAN% 09UTC) 76 65 75 70 70 55 59 71 71 72 72 74 69 RELATIVE HUMIDITY (MEAN% 15UTC) 88 77 83 80 77 62 64 80 83 85 86 84 79 RH=0 => RELATIVE HUMIDITY < 0.5% AMOUNT OF PRECIPITATION MM. 89.6 21.2 106.1 66.9 182.3 0.2 115.3 222.0 150.2 270.0 207.3 49.9 1481.0 DAYS WITH PRECIPITATION >=10 4 1 4 3 4 0 1 7 5 6 9 2 46 DAYS WITH PRECIPITATION >= 5 4 1 7 3 6 0 1 8 6 8 11 4 59 DAYS WITH PRECIPITATION >= 1 8 2 11 6 11 0 2 12 10 10 14 6 92 DAYS WITH PRECIPITATION 10 4 14 14 17 1 4 12 15 11 17 7 126 GREATEST DAILY PRECIPITATION 29.8 17.4 34.0 28.0 58.0 0.2 111.0 33.0 52.0 79.0 34.3 21.0 111.0 DAY 18 4 16 8 8 10 12 7 15 19 6 24 DAY WITH THUNDER STORM 0 0 2 1 2 2 0 0 2 1 0 1 11 DAYS WITH SNOW OR SLEET 0 0 0 0 0 0 0 0 0 0 0 0 0 DAYS WITH DUST 0 0 0 0 0 0 0 0 0 0 0 0 0 WIND DIRECTION (PREVAILING) 135 90 90 135 135 135 135 135 315 315 315 180 135 PREVAILING WIND SPEED(KNOTS) 6.0 7.8 7.7 7.6 7.7 8.9 7.1 6.3 8.0 9.3 9.1 8.7 7.4 PREVAILING WIND PERCENT 2.8 8.9 12.5 12.9 16.5 12.5 16.5 6.5 12.1 7.3 12.1 5.6 7.7 CALMS PERCENT OF WIND 88.3 71.4 64.1 66.3 61.7 62.5 62.1 73.8 72.1 73.0 69.6 83.5 70.7 NO. OF WIND OBSERVATION 248 224 248 240 248 240 248 248 240 248 240 248 2920 VECTOR WIND DIRECTION (MEAN) 95 150 78 130 139 124 128 107 341 356 343 227 105 VECTOR WIND MAGNITUDE(KNOTS) 0.2 0.3 0.7 0.9 1.5 1.8 1.5 0.4 1.0 0.5 1.3 0.2 0.4 WIND STEADINESES (MEAN %) 28.6 13.6 28.0 34.6 50.0 58.1 48.4 25.0 45.5 21.7 52.0 15.4 17.4 WIND SPEED (MEAN KNOTS) 0.7 2.2 2.5 2.6 3.0 3.1 3.1 1.6 2.2 2.3 2.5 1.3 2.3 FASTEST WIND DIRECTION 170 320 80 320 180 360 340 360 350 180 330 210 340 FASTEST WIND SPEED (KNOTS) 12 27 14 17 16 17 29 14 16 23 19 23 29 DAY 2 20 17 23 1 12 12 28 16 14 9 28 DAYS WITH SKY CLEAR (0-2)/8 8 10 3 8 11 20 14 11 9 13 9 5 121 DAYS WITH P.CLOUDY (3-6)/8 10 9 12 9 9 10 13 10 4 7 5 14 112 DAYS WITH CLOUDY (7-8)/8 13 9 16 13 11 0 4 10 17 11 16 12 132 DAYS WITH VISIBILITY =< 2 KM 6 3 9 4 4 0 0 3 4 6 7 9 55 DURATION OF SUNSHINE HOURS 137.3 150.6 110.7 154.1 200.8 303.3 298.9 211.7 117.0 164.7 107.6 64.5 2021.2 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ASTARA (40709) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 38 25 N LONGITUDE 48 52 E DATA PROCESSING CENTER ELEVATION -18.0 M MEANS AND EXTREMES FOR THE YEAR 1999 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL MEAN QFE PRESSURE IN HPA 1024.9 1018.6 1021.6 1020.3 1018.8 1014.0 1012.0 1011.6 1017.3 1020.6 1024.9 1025.7 1019.2 MAX. QFE PRESSURE IN HPA 1044.0 1031.8 1035.0 1031.0 1028.7 1025.2 1021.3 1020.6 1026.2 1031.6 1039.3 1041.1 1044.0 DAY-HOUR 2- 0 11- 6 18- 9 22-18 8-18 16- 9 12-18 20- 6 23- 6 26- 9 30- 6 24- 6 MIN. QFE PRESSURE IN HPA 1010.1 997.4 1007.3 1003.1 1007.4 1001.3 1006.1 1005.8 1009.5 1010.6 1007.8 1011.2 997.4 DAY-HOUR 9- 0 20- 9 20-15 13-15 13-21 24-15 21-15 5- 0 12-15 10-18 25- 0 15-12 MEAN QNH PRESSURE IN HPA 1022.4 1016.1 1019.1 1017.8 1016.3 1011.5 1009.6 1009.2 1014.8 1018.2 1022.4 1023.2 1016.7 MAX. QNH PRESSURE IN HPA 1041.5 1029.3 1032.5 1028.5 1026.2 1022.7 1018.8 1018.1 1023.7 1029.1 1036.8 1038.6 1041.5 DAY-HOUR 2- 0 11- 6 18- 9 22-18 8-18 16- 9 12-18 20- 6 23- 6 26- 9 30- 6 24- 6 MIN. QNH PRESSURE IN HPA 1007.6 995.0 1004.8 1000.7 1004.9 998.9 1003.7 1003.4 1007.0 1008.1 1005.3 1008.7 995.0 DAY-HOUR 9- 0 20- 9 20-15 13-15 13-21 24-15 21-15 5- 0 12-15 10-18 25- 0 15-12 MEAN QFF PRESSURE IN HPA 1022.7 1016.4 1019.4 1018.1 1016.6 1011.9 1009.9 1009.6 1015.1 1018.5 1022.7 1023.5 1017.0 MAX. QFF PRESSURE IN HPA 1041.7 1029.6 1032.7 1028.8 1026.5 1023.1 1019.2 1018.5 1024.0 1029.4 1037.0 1038.8 1041.7 DAY-HOUR 2- 0 11- 6 18- 9 22-18 8-18 16- 9 12-18 20- 6 23- 6 26- 9 30- 6 24- 6 MIN. QFF PRESSURE IN HPA 1007.9 995.3 1005.1 1001.0 1005.3 999.2 1004.0 1003.8 1007.4 1008.5 1005.6 1009.0 995.3 DAY-HOUR 9- 0 20- 9 20-15 13-15 13-21 24-15 21-15 5- 0 12-15 10-18 25- 0 15-12 PRESSURE AT HOUR 0000 UTC. MEAN QFE PRESSURE IN HPA 1024.9 1018.4 1021.3 1019.8 1018.5 1014.0 1011.8 1011.3 1017.0 1020.3 1024.4 1025.9 1019.0 MAX. QFE PRESSURE IN HPA 1044.0 1030.1 1032.0 1029.5 1028.3 1024.0 1018.1 1018.3 1023.9 1030.5 1037.7 1038.9 1044.0 DAY 2 11 18 23 9 16 13 20 5 26 11 24 MIN. QFE PRESSURE IN HPA 1010.1 1000.0 1010.2 1007.4 1008.7 1003.2 1007.7 1005.8 1010.4 1012.2 1007.8 1013.4 1000.0 DAY 9 20 21 14 18 25 31 5 13 11 25 15 MEAN QNH PRESSURE IN HPA 1022.4 1015.9 1018.8 1017.3 1016.1 1011.5 1009.4 1008.9 1014.5 1017.9 1022.0 1023.4 1016.5 MAX. QNH PRESSURE IN HPA 1041.5 1027.6 1029.5 1027.0 1025.8 1021.5 1015.6 1015.8 1021.4 1028.0 1035.2 1036.4 1041.5 DAY 2 11 18 23 9 16 13 20 5 26 11 24 MIN. QNH PRESSURE IN HPA 1007.6 997.6 1007.7 1004.9 1006.2 1000.8 1005.2 1003.4 1007.9 1009.7 1005.3 1010.9 997.6 DAY 9 20 21 14 18 25 31 5 13 11 25 15 MEAN QFF PRESSURE IN HPA 1022.7 1016.2 1019.0 1017.6 1016.4 1011.9 1009.8 1009.3 1014.9 1018.2 1022.2 1023.7 1016.8 MAX. QFF PRESSURE IN HPA 1041.7 1027.9 1029.7 1027.3 1026.1 1021.9 1016.0 1016.2 1021.8 1028.3 1035.4 1036.6 1041.7 DAY 2 11 18 23 9 16 13 20 5 26 11 24 MIN. QFF PRESSURE IN HPA 1007.9 997.9 1008.0 1005.3 1006.6 1001.1 1005.7 1003.8 1008.3 1010.1 1005.6 1011.2 997.9 DAY 9 20 21 14 18 25 31 5 13 11 25 15 PRESSURE AT HOUR 0300 UTC. MEAN QFE PRESSURE IN HPA 1024.9 1018.9 1021.8 1020.6 1019.1 1014.5 1012.4 1012.2 1017.4 1020.8 1024.8 1026.2 1019.5 MAX. QFE PRESSURE IN HPA 1043.1 1030.6 1033.4 1030.2 1028.3 1024.9 1017.2 1019.9 1024.9 1030.4 1038.3 1039.5 1043.1 DAY 2 11 18 23 9 16 13 20 23 26 30 24 MIN. QFE PRESSURE IN HPA 1010.2 999.0 1009.7 1009.4 1009.5 1003.4 1008.3 1006.9 1010.0 1013.3 1008.8 1012.8 999.0 DAY 9 20 21 13 18 25 31 5 15 11 25 15 MEAN QNH PRESSURE IN HPA 1022.4 1016.4 1019.3 1018.1 1016.6 1012.1 1009.9 1009.7 1014.9 1018.3 1022.3 1023.7 1017.0 MAX. QNH PRESSURE IN HPA 1040.6 1028.1 1030.9 1027.7 1025.8 1022.4 1014.7 1017.4 1022.4 1027.9 1035.8 1037.0 1040.6 DAY 2 11 18 23 9 16 13 20 23 26 30 24 MIN. QNH PRESSURE IN HPA 1007.7 996.6 1007.2 1006.9 1007.0 1001.0 1005.8 1004.4 1007.5 1010.8 1006.3 1010.3 996.6 DAY 9 20 21 13 18 25 31 5 15 11 25 15 MEAN QFF PRESSURE IN HPA 1022.6 1016.7 1019.5 1018.4 1017.0 1012.4 1010.3 1010.1 1015.3 1018.6 1022.6 1023.9 1017.3 MAX. QFF PRESSURE IN HPA 1040.8 1028.3 1031.1 1028.0 1026.1 1022.8 1015.1 1017.8 1022.7 1028.2 1036.0 1037.2 1040.8 DAY 2 11 18 23 9 16 13 20 23 26 30 24 MIN. QFF PRESSURE IN HPA 1008.0 996.9 1007.5 1007.2 1007.4 1001.3 1006.2 1004.8 1007.9 1011.2 1006.6 1010.6 996.9 DAY 9 20 21 13 18 25 31 5 15 16 25 15 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ASTARA (40709) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 38 25 N LONGITUDE 48 52 E DATA PROCESSING CENTER ELEVATION -18.0 M MEANS AND EXTREMES FOR THE YEAR 1999 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 0600 UTC. MEAN QFE PRESSURE IN HPA 1025.8 1019.7 1022.6 1021.2 1019.5 1014.6 1012.7 1012.9 1018.0 1021.6 1025.7 1027.0 1020.1 MAX. QFE PRESSURE IN HPA 1043.1 1031.8 1034.7 1030.5 1028.3 1025.0 1017.2 1020.6 1026.2 1031.4 1039.3 1041.1 1043.1 DAY 2 11 18 23 9 16 18 20 23 26 30 24 MIN. QFE PRESSURE IN HPA 1010.4 1001.0 1009.4 1009.1 1011.2 1002.8 1007.5 1008.0 1010.2 1013.9 1012.2 1012.9 1001.0 DAY 9 20 21 13 18 25 31 6 15 16 25 15 MEAN QNH PRESSURE IN HPA 1023.3 1017.2 1020.1 1018.7 1017.0 1012.2 1010.2 1010.4 1015.5 1019.1 1023.3 1024.5 1017.6 MAX. QNH PRESSURE IN HPA 1040.6 1029.3 1032.2 1028.0 1025.8 1022.5 1014.7 1018.1 1023.7 1028.9 1036.8 1038.6 1040.6 DAY 2 11 18 23 9 16 18 20 23 26 30 24 MIN. QNH PRESSURE IN HPA 1007.9 998.6 1006.9 1006.6 1008.7 1000.4 1005.0 1005.5 1007.7 1011.4 1009.7 1010.4 998.6 DAY 9 20 21 13 18 25 31 6 15 16 25 15 MEAN QFF PRESSURE IN HPA 1023.5 1017.5 1020.4 1019.0 1017.3 1012.6 1010.6 1010.8 1015.9 1019.5 1023.5 1024.7 1017.9 MAX. QFF PRESSURE IN HPA 1040.8 1029.6 1032.4 1028.3 1026.1 1022.9 1015.1 1018.5 1024.0 1029.2 1037.0 1038.8 1040.8 DAY 2 11 18 23 9 16 18 20 23 26 30 24 MIN. QFF PRESSURE IN HPA 1008.2 998.9 1007.2 1007.0 1009.1 1000.7 1005.5 1006.0 1008.1 1011.8 1010.0 1010.7 998.9 DAY 9 20 21 13 18 25 31 6 15 16 25 15 PRESSURE AT HOUR 0900 UTC. MEAN QFE PRESSURE IN HPA 1025.0 1018.7 1022.1 1020.8 1018.9 1014.2 1012.3 1012.2 1017.4 1020.8 1024.7 1025.5 1019.4 MAX. QFE PRESSURE IN HPA 1040.7 1030.8 1035.0 1030.8 1027.7 1025.2 1017.2 1019.8 1025.1 1031.6 1038.4 1039.9 1040.7 DAY 2 11 18 6 9 16 18 20 23 26 30 24 MIN. QFE PRESSURE IN HPA 1010.3 997.4 1008.7 1007.4 1011.9 1002.5 1007.1 1007.0 1009.8 1012.9 1011.1 1011.7 997.4 DAY 9 20 21 13 17 25 30 5 15 28 19 15 MEAN QNH PRESSURE IN HPA 1022.6 1016.3 1019.6 1018.4 1016.4 1011.7 1009.8 1009.7 1014.9 1018.3 1022.2 1023.1 1016.9 MAX. QNH PRESSURE IN HPA 1038.2 1028.3 1032.5 1028.3 1025.2 1022.7 1014.7 1017.3 1022.6 1029.1 1035.9 1037.4 1038.2 DAY 2 11 18 6 9 16 18 20 23 26 30 24 MIN. QNH PRESSURE IN HPA 1007.8 995.0 1006.2 1004.9 1009.4 1000.1 1004.6 1004.5 1007.3 1010.4 1008.6 1009.2 995.0 DAY 9 20 21 13 17 25 30 5 15 28 19 15 MEAN QFF PRESSURE IN HPA 1022.8 1016.5 1019.9 1018.7 1016.7 1012.1 1010.2 1010.1 1015.3 1018.7 1022.5 1023.3 1017.2 MAX. QFF PRESSURE IN HPA 1038.4 1028.6 1032.7 1028.6 1025.5 1023.1 1015.1 1017.7 1022.9 1029.4 1036.1 1037.6 1038.4 DAY 2 11 18 6 9 16 18 20 23 26 30 24 MIN. QFF PRESSURE IN HPA 1008.1 995.3 1006.5 1005.3 1009.8 1000.4 1005.1 1005.0 1007.7 1010.7 1008.9 1009.5 995.3 DAY 9 20 21 13 17 25 30 5 15 28 19 15 PRESSURE AT HOUR 1200 UTC. MEAN QFE PRESSURE IN HPA 1024.1 1017.8 1020.9 1020.0 1018.2 1013.4 1011.6 1011.0 1016.6 1020.0 1024.2 1024.8 1018.6 MAX. QFE PRESSURE IN HPA 1039.9 1028.7 1034.3 1030.4 1026.2 1025.0 1017.8 1017.8 1024.6 1031.1 1038.1 1039.2 1039.9 DAY 1 11 18 22 9 16 12 20 23 26 30 24 MIN. QFE PRESSURE IN HPA 1010.1 998.4 1008.4 1004.8 1009.5 1002.2 1006.8 1006.8 1010.0 1011.5 1010.5 1011.2 998.4 DAY 9 20 20 13 17 24 31 5 15 28 19 15 MEAN QNH PRESSURE IN HPA 1021.6 1015.3 1018.5 1017.6 1015.7 1011.0 1009.1 1008.6 1014.1 1017.5 1021.8 1022.3 1016.1 MAX. QNH PRESSURE IN HPA 1037.4 1026.2 1031.8 1027.9 1023.7 1022.5 1015.3 1015.3 1022.1 1028.6 1035.6 1036.7 1037.4 DAY 1 11 18 22 9 16 12 20 23 26 30 24 MIN. QNH PRESSURE IN HPA 1007.6 996.0 1005.9 1002.4 1007.0 999.8 1004.4 1004.4 1007.5 1009.0 1008.0 1008.7 996.0 DAY 9 20 20 13 17 24 31 5 15 28 19 15 MEAN QFF PRESSURE IN HPA 1021.8 1015.5 1018.7 1017.8 1016.1 1011.3 1009.5 1009.0 1014.5 1017.9 1022.0 1022.5 1016.4 MAX. QFF PRESSURE IN HPA 1037.6 1026.5 1032.0 1028.2 1024.0 1022.9 1015.7 1015.7 1022.4 1028.9 1035.8 1036.9 1037.6 DAY 1 11 18 22 9 16 12 20 23 26 30 24 MIN. QFF PRESSURE IN HPA 1007.9 996.3 1006.2 1002.7 1007.4 1000.1 1004.8 1004.8 1007.9 1009.4 1008.3 1009.0 996.3 DAY 9 20 20 13 17 24 31 5 15 28 19 15 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ASTARA (40709) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 38 25 N LONGITUDE 48 52 E DATA PROCESSING CENTER ELEVATION -18.0 M MEANS AND EXTREMES FOR THE YEAR 1999 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 1500 UTC. MEAN QFE PRESSURE IN HPA 1024.8 1018.1 1021.2 1019.8 1017.9 1013.2 1011.4 1010.5 1016.7 1020.2 1025.0 1025.3 1018.7 MAX. QFE PRESSURE IN HPA 1042.0 1029.1 1033.3 1030.6 1026.2 1024.8 1020.4 1017.6 1024.6 1031.1 1039.0 1039.7 1042.0 DAY 1 11 18 22 8 16 12 19 23 26 30 24 MIN. QFE PRESSURE IN HPA 1011.2 1000.1 1007.3 1003.1 1007.7 1001.3 1006.1 1006.4 1009.5 1012.0 1011.3 1012.3 1000.1 DAY 9 20 20 13 13 24 21 4 12 10 24 15 MEAN QNH PRESSURE IN HPA 1022.3 1015.6 1018.7 1017.3 1015.4 1010.8 1008.9 1008.1 1014.3 1017.8 1022.5 1022.8 1016.2 MAX. QNH PRESSURE IN HPA 1039.5 1026.6 1030.8 1028.1 1023.7 1022.3 1017.9 1015.1 1022.1 1028.6 1036.5 1037.2 1039.5 DAY 1 11 18 22 8 16 12 19 23 26 30 24 MIN. QNH PRESSURE IN HPA 1008.7 997.7 1004.8 1000.7 1005.2 998.9 1003.7 1004.0 1007.0 1009.5 1008.8 1009.8 997.7 DAY 9 20 20 13 13 24 21 4 12 10 24 15 MEAN QFF PRESSURE IN HPA 1022.6 1015.9 1019.0 1017.6 1015.8 1011.1 1009.3 1008.5 1014.6 1018.1 1022.8 1023.1 1016.5 MAX. QFF PRESSURE IN HPA 1039.7 1026.9 1031.0 1028.4 1024.0 1022.7 1018.3 1015.5 1022.4 1028.9 1036.7 1037.4 1039.7 DAY 1 11 18 22 8 16 12 19 23 26 30 24 MIN. QFF PRESSURE IN HPA 1009.0 998.0 1005.1 1001.0 1005.6 999.2 1004.0 1004.4 1007.4 1009.9 1009.1 1010.1 998.0 DAY 9 20 20 13 13 24 21 4 12 10 24 15 PRESSURE AT HOUR 1800 UTC. MEAN QFE PRESSURE IN HPA 1025.1 1018.8 1021.7 1020.3 1019.2 1014.1 1012.2 1011.4 1017.8 1020.9 1025.3 1025.6 1019.4 MAX. QFE PRESSURE IN HPA 1043.2 1031.7 1032.4 1031.0 1028.7 1024.8 1021.3 1018.7 1025.1 1030.6 1039.1 1039.0 1043.2 DAY 1 10 17 22 8 16 12 19 4 26 30 24 MIN. QFE PRESSURE IN HPA 1011.8 1003.9 1008.8 1005.4 1008.6 1002.9 1007.1 1006.3 1010.2 1010.6 1009.4 1013.2 1002.9 DAY 8 20 20 13 13 24 31 12 12 10 24 28 MEAN QNH PRESSURE IN HPA 1022.6 1016.4 1019.2 1017.8 1016.7 1011.7 1009.8 1009.0 1015.3 1018.4 1022.8 1023.2 1016.9 MAX. QNH PRESSURE IN HPA 1040.7 1029.2 1029.9 1028.5 1026.2 1022.3 1018.8 1016.2 1022.6 1028.1 1036.6 1036.5 1040.7 DAY 1 10 17 22 8 16 12 19 4 26 30 24 MIN. QNH PRESSURE IN HPA 1009.3 1001.5 1006.3 1003.0 1006.1 1000.5 1004.6 1003.9 1007.7 1008.1 1006.9 1010.7 1000.5 DAY 8 20 20 13 13 24 31 12 12 10 24 28 MEAN QFF PRESSURE IN HPA 1022.8 1016.6 1019.5 1018.1 1017.0 1012.0 1010.2 1009.4 1015.6 1018.7 1023.1 1023.4 1017.2 MAX. QFF PRESSURE IN HPA 1040.9 1029.5 1030.1 1028.8 1026.5 1022.7 1019.2 1016.6 1023.0 1028.4 1036.8 1036.7 1040.9 DAY 1 10 17 22 8 16 12 19 4 26 30 24 MIN. QFF PRESSURE IN HPA 1009.6 1001.8 1006.6 1003.3 1006.5 1000.8 1005.1 1004.3 1008.1 1008.5 1007.2 1011.0 1000.8 DAY 8 20 20 13 13 24 31 12 12 10 24 28 PRESSURE AT HOUR 2100 UTC. MEAN QFE PRESSURE IN HPA 1024.8 1018.8 1021.3 1020.2 1018.9 1013.8 1012.0 1011.4 1017.4 1020.6 1025.1 1025.5 1019.2 MAX. QFE PRESSURE IN HPA 1043.7 1031.7 1032.0 1031.0 1028.5 1023.5 1020.0 1018.8 1024.4 1030.5 1037.9 1038.1 1043.7 DAY 1 10 17 22 8 15 12 19 4 25 30 23 MIN. QFE PRESSURE IN HPA 1011.0 1005.0 1009.0 1005.5 1007.4 1003.3 1007.1 1006.3 1010.0 1011.7 1008.1 1013.8 1003.3 DAY 8 19 20 13 13 24 31 4 12 10 24 14 MEAN QNH PRESSURE IN HPA 1022.3 1016.3 1018.8 1017.7 1016.5 1011.4 1009.5 1009.0 1014.9 1018.2 1022.6 1023.0 1016.7 MAX. QNH PRESSURE IN HPA 1041.2 1029.2 1029.5 1028.5 1026.0 1021.0 1017.5 1016.3 1021.9 1028.0 1035.4 1035.6 1041.2 DAY 1 10 17 22 8 15 12 19 4 25 30 23 MIN. QNH PRESSURE IN HPA 1008.5 1002.6 1006.5 1003.1 1004.9 1000.9 1004.6 1003.9 1007.5 1009.2 1005.6 1011.3 1000.9 DAY 8 19 20 13 13 24 31 4 12 10 24 14 MEAN QFF PRESSURE IN HPA 1022.6 1016.6 1019.1 1018.0 1016.8 1011.7 1009.9 1009.4 1015.3 1018.5 1022.9 1023.3 1017.0 MAX. QFF PRESSURE IN HPA 1041.4 1029.5 1029.7 1028.8 1026.3 1021.4 1017.9 1016.7 1022.3 1028.3 1035.6 1035.8 1041.4 DAY 1 10 17 22 8 16 12 19 4 25 30 23 MIN. QFF PRESSURE IN HPA 1008.8 1002.8 1006.8 1003.4 1005.3 1001.2 1005.1 1004.3 1007.9 1009.6 1005.9 1011.6 1001.2 DAY 8 19 20 13 13 24 31 4 12 10 24 14 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ASTARA (40709) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 38 25 N LONGITUDE 48 52 E DATA PROCESSING CENTER ELEVATION -18.0 M MEANS AND EXTREMES FOR THE YEAR 2000 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AIR TEMPERATURE (C) 6.2 6.3 7.6 15.5 17.9 22.3 26.4 26.5 22.2 15.9 11.2 8.4 15.5 MINIMUN AIR TEMPERATURE (C) 3.2 3.0 4.2 11.9 14.4 17.7 21.3 22.5 19.4 13.8 9.1 5.9 12.2 DAYS WITH MINIMUM TEMP. >=21 0 0 0 0 0 1 22 28 7 0 0 0 58 DAYS WITH MINIMUM TEMP. <=-4 0 0 0 0 0 0 0 0 0 0 0 0 0 DAYS WITH FREEZING MIN.<= 0 4 2 1 0 0 0 0 0 0 0 0 0 7 TEMPERATURE RECORDS LOWEST(C) -2.2 0.0 0.0 8.0 10.0 12.0 19.4 19.8 16.5 9.4 5.2 1.0 -2.2 DAY 30 9 16 1 5 13 23 13 12 16 26 23 MAXIMUM AIR TEMPERATURE (C) 9.3 9.9 10.9 19.8 21.6 26.6 31.4 31.1 25.6 18.5 13.8 12.0 19.2 DAYS WITH MAXIMUM TEMP. >=30 0 0 0 1 1 4 25 25 1 0 0 0 57 DAYS WITH MAXIMUM TEMP. <= 0 0 0 0 0 0 0 0 0 0 0 0 0 0 TEMPERATURE RECORDS HIGHEST(C) 20.0 15.2 17.0 30.0 30.0 33.0 33.6 35.6 31.0 24.0 18.2 21.2 35.6 DAY 20 4 19 20 27 7 1 3 8 12 4 31 DIF. BETWEEN (MAX.-MIN.) (C) 6.1 6.9 6.7 7.9 7.2 8.9 10.1 8.6 6.2 4.7 4.7 6.1 7.0 MEAN DAILY TEMP. (MDT) (C) 6.3 6.4 7.5 15.9 18.0 22.1 26.4 26.8 22.5 16.2 11.4 9.0 15.7 COOLING DEG. DAYS(BASE 21 0C) 0.0 0.0 0.0 2.4 6.5 48.2 165.9 180.0 56.8 0.0 0.0 0.0 459.9 HEATING DEG. DAYS(BASE 18 0C) 363.4 335.3 324.8 75.6 34.4 1.2 0.0 0.0 0.0 67.6 196.9 280.0 1679.2 DEWPOINT (MEAN C) 2.0 3.2 4.6 11.9 13.8 16.5 20.8 20.9 19.2 14.0 9.3 6.2 11.9 MIXING RATIO (G/KG) 4.47 4.77 5.31 8.80 9.96 11.94 15.65 15.84 14.03 9.98 7.23 5.87 9.49 VAPOUR PRESSURE (HPA) 7.29 7.78 8.65 14.15 16.00 19.08 24.83 25.12 22.41 16.17 11.81 9.57 15.24 SATURATION DEF. (HPA) 2.49 1.91 2.00 3.83 5.05 8.40 10.09 10.06 4.80 2.12 1.60 1.62 4.50 RELATIVE HUMIDITY (MEAN %) 78 82 82 81 79 72 73 73 84 89 88 87 81 RELATIVE HUMIDITY (MAX. %) 91 93 93 93 92 89 90 88 94 96 95 96 93 RELATIVE HUMIDITY (MIN. %) 63 65 68 66 63 55 56 57 72 81 79 74 67 RELATIVE HUMIDITY (MEAN% 03UTC) 81 87 90 89 87 79 81 81 89 94 91 90 87 RELATIVE HUMIDITY (MEAN% 09UTC) 72 70 72 70 69 61 60 62 77 84 82 80 72 RELATIVE HUMIDITY (MEAN% 15UTC) 79 84 82 78 74 66 68 70 84 92 90 89 80 RH=0 => RELATIVE HUMIDITY < 0.5% AMOUNT OF PRECIPITATION MM. 141.2 107.2 173.8 2.2 78.3 39.1 4.1 177.3 628.1 242.2 243.7 92.7 1929.9 DAYS WITH PRECIPITATION >=10 5 3 5 0 3 2 0 3 8 8 5 4 46 DAYS WITH PRECIPITATION >= 5 10 9 7 0 3 2 0 4 10 11 8 6 70 DAYS WITH PRECIPITATION >= 1 12 9 14 1 8 2 1 5 12 18 15 13 110 DAYS WITH PRECIPITATION 14 12 15 6 9 5 2 10 14 19 17 15 138 GREATEST DAILY PRECIPITATION 43.0 29.0 49.0 1.0 36.0 28.0 4.0 113.0 190.0 61.0 84.0 19.0 190.0 DAY 16 29 24 10 4 12 11 26 25 13 9 9 DAY WITH THUNDER STORM 0 0 0 5 4 0 3 2 5 6 0 0 25 DAYS WITH SNOW OR SLEET 5 0 1 0 0 0 0 0 0 0 0 0 6 DAYS WITH DUST 1 0 0 0 0 0 0 0 0 0 0 0 1 WIND DIRECTION (PREVAILING) 360 360 135 135 135 135 135 135 315 315 315 360 135 PREVAILING WIND SPEED(KNOTS) 7.5 7.1 9.6 8.2 7.8 9.4 6.9 7.6 7.1 9.2 7.1 6.3 8.2 PREVAILING WIND PERCENT 13.3 9.1 10.9 17.1 12.9 19.6 16.1 9.3 7.1 8.9 10.0 12.1 8.3 CALMS PERCENT OF WIND 57.7 67.7 61.3 62.1 63.3 60.8 67.7 66.1 75.0 78.2 76.3 74.2 67.5 NO. OF WIND OBSERVATION 248 232 248 240 248 240 248 248 240 248 240 248 2928 VECTOR WIND DIRECTION (MEAN) 285 44 146 152 131 132 127 96 356 347 348 324 115 VECTOR WIND MAGNITUDE(KNOTS) 1.2 0.4 1.2 2.1 1.6 1.9 1.6 1.1 0.5 1.3 1.3 0.6 0.4 WIND STEADINESES (MEAN %) 30.8 15.4 38.7 65.6 57.1 61.3 72.7 47.8 31.3 76.5 81.2 35.3 16.0 WIND SPEED (MEAN KNOTS) 3.9 2.6 3.1 3.2 2.8 3.1 2.2 2.3 1.6 1.7 1.6 1.7 2.5 FASTEST WIND DIRECTION 210 30 170 240 180 150 160 120 360 330 350 270 270 FASTEST WIND SPEED (KNOTS) 39 19 27 35 16 19 16 14 16 19 17 54 54 DAY 20 6 10 20 6 16 7 13 30 19 9 21 DAYS WITH SKY CLEAR (0-2)/8 7 8 11 8 11 22 22 11 8 1 3 6 118 DAYS WITH P.CLOUDY (3-6)/8 7 8 7 12 9 3 9 11 5 9 8 10 98 DAYS WITH CLOUDY (7-8)/8 17 13 13 10 11 5 0 9 17 21 19 15 150 DAYS WITH VISIBILITY =< 2 KM 9 8 9 2 0 0 0 3 5 10 8 3 57 DURATION OF SUNSHINE HOURS 80.8 118.4 168.5 188.2 204.1 281.5 328.1 196.7 115.2 79.9 66.2 89.9 1917.5 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ASTARA (40709) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 38 25 N LONGITUDE 48 52 E DATA PROCESSING CENTER ELEVATION -18.0 M MEANS AND EXTREMES FOR THE YEAR 2000 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL MEAN QFE PRESSURE IN HPA 1022.7 1023.7 1021.9 1015.5 1016.5 1014.4 1012.4 1012.8 1016.3 1024.6 1028.0 1023.6 1019.4 MAX. QFE PRESSURE IN HPA 1035.9 1041.6 1035.7 1026.3 1029.7 1026.1 1019.1 1019.0 1025.4 1031.6 1037.9 1036.2 1041.6 DAY-HOUR 14- 6 29- 6 1- 0 2- 6 4-18 12-18 30- 6 8- 6 29- 6 15- 6 16- 6 9- 9 MIN. QFE PRESSURE IN HPA 1001.6 1014.0 1009.3 1005.7 1007.1 1006.2 1004.8 1002.5 1006.3 1016.2 1020.4 1006.7 1001.6 DAY-HOUR 19-12 23-12 11-12 7-15 26-15 7-18 7-21 3- 0 7-12 10-15 30-21 21-12 MEAN QNH PRESSURE IN HPA 1020.2 1021.3 1019.4 1013.0 1014.0 1011.9 1010.0 1010.4 1013.8 1022.1 1025.5 1021.1 1016.9 MAX. QNH PRESSURE IN HPA 1033.4 1039.1 1033.2 1023.8 1027.2 1023.6 1016.6 1016.5 1022.9 1029.1 1035.4 1033.7 1039.1 DAY-HOUR 14- 6 29- 6 1- 0 2- 6 4-18 12-18 30- 6 8- 6 29- 6 15- 6 16- 6 9- 9 MIN. QNH PRESSURE IN HPA 999.2 1011.5 1006.8 1003.3 1004.6 1003.8 1002.4 1000.1 1003.9 1013.7 1017.9 1004.3 999.2 DAY-HOUR 19-12 23-12 11-12 7-15 26-15 7-18 7-21 3- 0 7-12 10-15 30-21 21-12 MEAN QFF PRESSURE IN HPA 1020.5 1021.5 1019.7 1013.3 1014.3 1012.3 1010.3 1010.8 1014.2 1022.4 1025.7 1021.4 1017.2 MAX. QFF PRESSURE IN HPA 1033.6 1039.3 1033.4 1024.1 1027.5 1023.9 1017.0 1016.9 1023.2 1029.4 1035.7 1033.9 1039.3 DAY-HOUR 14- 6 29- 6 1- 0 2- 6 4-18 12-18 30- 6 8- 6 29- 6 15- 6 16- 6 9- 9 MIN. QFF PRESSURE IN HPA 999.4 1011.8 1007.1 1003.6 1005.0 1004.1 1002.8 1000.5 1004.2 1014.1 1018.2 1004.6 999.4 DAY-HOUR 20-18 23-12 11-12 7-15 26-15 7-18 7-21 3- 0 7-15 10-15 30-21 21-12 PRESSURE AT HOUR 0000 UTC. MEAN QFE PRESSURE IN HPA 1022.7 1023.2 1021.6 1015.1 1016.3 1014.1 1012.3 1012.7 1016.1 1024.2 1027.7 1023.5 1019.1 MAX. QFE PRESSURE IN HPA 1034.3 1040.3 1035.7 1024.1 1027.4 1024.4 1016.4 1017.5 1023.8 1030.5 1036.1 1035.3 1040.3 DAY 14 29 1 2 5 13 3 8 29 15 17 10 MIN. QFE PRESSURE IN HPA 1002.3 1014.4 1010.6 1005.9 1008.2 1006.9 1006.9 1002.5 1006.6 1016.9 1022.7 1013.7 1002.3 DAY 21 23 19 10 27 5 11 3 7 11 22 21 MEAN QNH PRESSURE IN HPA 1020.3 1020.7 1019.1 1012.6 1013.8 1011.6 1009.9 1010.2 1013.6 1021.7 1025.3 1021.0 1016.6 MAX. QNH PRESSURE IN HPA 1031.8 1037.8 1033.2 1021.6 1024.9 1021.9 1013.9 1015.0 1021.3 1028.0 1033.6 1032.8 1037.8 DAY 14 29 1 2 5 13 3 8 29 15 17 10 MIN. QNH PRESSURE IN HPA 999.9 1011.9 1008.1 1003.5 1005.7 1004.4 1004.4 1000.1 1004.2 1014.4 1020.2 1011.2 999.9 DAY 21 23 19 10 27 5 11 3 7 11 22 21 MEAN QFF PRESSURE IN HPA 1020.5 1020.9 1019.4 1012.9 1014.1 1012.0 1010.3 1010.6 1014.0 1022.0 1025.5 1021.2 1017.0 MAX. QFF PRESSURE IN HPA 1032.0 1038.0 1033.4 1021.9 1025.2 1022.2 1014.3 1015.4 1021.6 1028.3 1033.9 1033.0 1038.0 DAY 14 29 1 2 5 13 3 20 29 15 17 10 MIN. QFF PRESSURE IN HPA 1000.1 1012.2 1008.4 1003.7 1006.1 1004.8 1004.8 1000.5 1004.5 1014.8 1020.5 1011.5 1000.1 DAY 21 23 19 10 27 5 11 3 7 11 22 21 PRESSURE AT HOUR 0300 UTC. MEAN QFE PRESSURE IN HPA 1022.7 1023.5 1022.1 1015.7 1017.0 1014.7 1013.1 1013.4 1016.5 1024.7 1028.0 1023.7 1019.6 MAX. QFE PRESSURE IN HPA 1034.7 1041.1 1034.0 1025.5 1027.0 1024.7 1018.4 1018.4 1023.9 1030.7 1036.4 1034.9 1041.1 DAY 14 29 1 2 5 13 30 8 29 15 17 10 MIN. QFE PRESSURE IN HPA 1004.8 1015.4 1010.9 1006.5 1009.3 1007.7 1008.4 1003.2 1007.0 1016.7 1023.0 1011.3 1003.2 DAY 19 23 19 21 27 19 11 3 7 11 22 21 MEAN QNH PRESSURE IN HPA 1020.2 1021.1 1019.7 1013.2 1014.5 1012.2 1010.6 1011.0 1014.0 1022.2 1025.5 1021.3 1017.1 MAX. QNH PRESSURE IN HPA 1032.2 1038.6 1031.5 1023.0 1024.5 1022.2 1015.9 1015.9 1021.4 1028.2 1033.9 1032.4 1038.6 DAY 14 29 1 2 5 13 30 8 29 15 17 10 MIN. QNH PRESSURE IN HPA 1002.4 1012.9 1008.4 1004.1 1006.8 1005.2 1005.9 1000.8 1004.5 1014.2 1020.5 1008.8 1000.8 DAY 19 23 19 21 27 19 11 3 7 11 22 21 MEAN QFF PRESSURE IN HPA 1020.5 1021.3 1019.9 1013.5 1014.8 1012.6 1011.0 1011.4 1014.4 1022.5 1025.8 1021.5 1017.4 MAX. QFF PRESSURE IN HPA 1032.4 1038.8 1031.7 1023.3 1024.8 1022.5 1016.3 1016.3 1021.7 1028.5 1034.2 1032.6 1038.8 DAY 14 29 1 2 5 13 30 8 29 15 17 10 MIN. QFF PRESSURE IN HPA 1002.6 1013.2 1008.7 1004.4 1007.2 1005.6 1006.3 1001.2 1004.9 1014.6 1020.8 1009.1 1001.2 DAY 19 23 19 21 27 19 11 3 7 11 22 21 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ASTARA (40709) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 38 25 N LONGITUDE 48 52 E DATA PROCESSING CENTER ELEVATION -18.0 M MEANS AND EXTREMES FOR THE YEAR 2000 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 0600 UTC. MEAN QFE PRESSURE IN HPA 1023.6 1024.6 1023.3 1016.6 1017.3 1015.0 1013.4 1013.9 1017.1 1025.4 1029.0 1024.6 1020.3 MAX. QFE PRESSURE IN HPA 1035.9 1041.6 1034.5 1026.3 1027.1 1024.7 1019.1 1019.0 1025.4 1031.6 1037.9 1036.1 1041.6 DAY 14 29 1 2 5 13 30 8 29 15 16 9 MIN. QFE PRESSURE IN HPA 1004.5 1016.6 1012.8 1008.8 1009.4 1008.4 1008.5 1003.0 1007.5 1017.2 1024.0 1010.5 1003.0 DAY 19 20 19 21 26 19 7 3 7 10 21 21 MEAN QNH PRESSURE IN HPA 1021.1 1022.1 1020.8 1014.2 1014.9 1012.6 1010.9 1011.5 1014.6 1022.9 1026.5 1022.2 1017.9 MAX. QNH PRESSURE IN HPA 1033.4 1039.1 1032.0 1023.8 1024.6 1022.2 1016.6 1016.5 1022.9 1029.1 1035.4 1033.6 1039.1 DAY 14 29 1 2 5 13 30 8 29 15 16 9 MIN. QNH PRESSURE IN HPA 1002.1 1014.1 1010.3 1006.3 1006.9 1005.9 1006.0 1000.6 1005.0 1014.7 1021.5 1008.0 1000.6 DAY 19 20 19 21 26 19 7 3 7 10 21 21 MEAN QFF PRESSURE IN HPA 1021.3 1022.4 1021.1 1014.5 1015.2 1012.9 1011.3 1011.9 1015.0 1023.2 1026.8 1022.4 1018.2 MAX. QFF PRESSURE IN HPA 1033.6 1039.3 1032.2 1024.1 1024.9 1022.5 1017.0 1016.9 1023.2 1029.4 1035.7 1033.8 1039.3 DAY 14 29 1 2 5 13 30 8 29 15 16 9 MIN. QFF PRESSURE IN HPA 1002.3 1014.4 1010.6 1006.7 1007.3 1006.3 1006.4 1001.0 1005.4 1015.1 1021.8 1008.3 1001.0 DAY 19 23 19 21 26 19 7 3 7 10 21 21 PRESSURE AT HOUR 0900 UTC. MEAN QFE PRESSURE IN HPA 1022.6 1024.1 1022.5 1016.1 1016.8 1014.6 1012.9 1013.1 1016.5 1024.7 1028.1 1023.5 1019.6 MAX. QFE PRESSURE IN HPA 1035.1 1041.4 1033.3 1025.5 1026.2 1023.9 1018.5 1018.0 1023.7 1031.4 1037.7 1036.2 1041.4 DAY 14 29 15 1 4 12 30 8 25 15 16 9 MIN. QFE PRESSURE IN HPA 1001.9 1015.6 1012.4 1008.6 1009.1 1008.6 1007.6 1003.8 1007.3 1017.1 1022.9 1006.9 1001.9 DAY 19 20 11 7 26 8 7 3 7 10 21 21 MEAN QNH PRESSURE IN HPA 1020.1 1021.6 1020.1 1013.6 1014.4 1012.2 1010.5 1010.7 1014.1 1022.2 1025.6 1021.0 1017.2 MAX. QNH PRESSURE IN HPA 1032.6 1038.9 1030.8 1023.0 1023.7 1021.4 1016.0 1015.5 1021.2 1028.9 1035.2 1033.7 1038.9 DAY 14 29 15 1 4 12 30 8 25 15 16 9 MIN. QNH PRESSURE IN HPA 999.5 1013.1 1009.9 1006.1 1006.6 1006.1 1005.1 1001.4 1004.8 1014.6 1020.4 1004.4 999.5 DAY 19 20 11 7 26 8 7 3 7 10 21 21 MEAN QFF PRESSURE IN HPA 1020.3 1021.9 1020.3 1013.9 1014.7 1012.5 1010.9 1011.1 1014.4 1022.5 1025.9 1021.3 1017.5 MAX. QFF PRESSURE IN HPA 1032.8 1039.1 1031.0 1023.3 1024.0 1021.7 1016.4 1015.9 1021.6 1029.2 1035.5 1033.9 1039.1 DAY 14 29 15 1 4 12 30 8 25 15 16 9 MIN. QFF PRESSURE IN HPA 999.7 1013.4 1010.2 1006.5 1007.0 1006.5 1005.5 1001.8 1005.2 1015.0 1020.7 1004.7 999.7 DAY 19 20 11 7 26 8 7 3 7 10 21 21 PRESSURE AT HOUR 1200 UTC. MEAN QFE PRESSURE IN HPA 1021.9 1023.2 1021.3 1014.9 1015.9 1014.0 1011.8 1012.2 1015.6 1024.1 1027.4 1022.9 1018.8 MAX. QFE PRESSURE IN HPA 1034.9 1039.8 1033.0 1024.2 1028.4 1024.8 1018.3 1017.6 1023.2 1030.9 1037.4 1034.9 1039.8 DAY 14 29 26 1 4 12 30 8 25 15 16 9 MIN. QFE PRESSURE IN HPA 1001.6 1014.0 1009.3 1006.3 1008.0 1008.0 1006.2 1004.3 1006.3 1016.4 1022.1 1006.7 1001.6 DAY 19 23 11 7 26 7 7 3 7 10 12 21 MEAN QNH PRESSURE IN HPA 1019.5 1020.7 1018.8 1012.5 1013.5 1011.6 1009.4 1009.7 1013.1 1021.6 1024.9 1020.4 1016.3 MAX. QNH PRESSURE IN HPA 1032.4 1037.3 1030.5 1021.7 1025.9 1022.3 1015.8 1015.1 1020.7 1028.4 1034.9 1032.4 1037.3 DAY 14 29 26 1 4 12 30 8 25 15 16 9 MIN. QNH PRESSURE IN HPA 999.2 1011.5 1006.8 1003.9 1005.5 1005.5 1003.8 1001.9 1003.9 1013.9 1019.6 1004.3 999.2 DAY 19 23 11 7 26 7 7 3 7 10 12 21 MEAN QFF PRESSURE IN HPA 1019.7 1020.9 1019.0 1012.8 1013.8 1011.9 1009.8 1010.1 1013.5 1021.9 1025.2 1020.7 1016.6 MAX. QFF PRESSURE IN HPA 1032.6 1037.5 1030.7 1022.0 1026.2 1022.6 1016.2 1015.5 1021.1 1028.7 1035.2 1032.6 1037.5 DAY 14 29 26 1 4 12 30 8 25 15 16 9 MIN. QFF PRESSURE IN HPA 999.5 1011.8 1007.1 1004.2 1005.9 1005.9 1004.1 1002.3 1004.2 1014.3 1019.9 1004.6 999.5 DAY 19 23 11 7 26 7 7 3 7 10 21 21 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ASTARA (40709) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 38 25 N LONGITUDE 48 52 E DATA PROCESSING CENTER ELEVATION -18.0 M MEANS AND EXTREMES FOR THE YEAR 2000 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 1500 UTC. MEAN QFE PRESSURE IN HPA 1022.6 1023.5 1021.3 1014.8 1015.7 1013.8 1011.4 1011.9 1015.6 1024.3 1027.8 1023.5 1018.9 MAX. QFE PRESSURE IN HPA 1034.9 1039.3 1034.1 1024.3 1028.3 1026.0 1016.8 1017.6 1023.3 1031.4 1037.4 1036.1 1039.3 DAY 14 29 26 1 4 12 30 8 25 15 16 9 MIN. QFE PRESSURE IN HPA 1003.7 1015.2 1009.6 1005.7 1007.1 1006.9 1005.1 1004.9 1006.3 1016.2 1021.9 1012.8 1003.7 DAY 20 22 11 7 26 7 7 2 7 10 12 21 MEAN QNH PRESSURE IN HPA 1020.2 1021.0 1018.8 1012.3 1013.2 1011.4 1009.0 1009.5 1013.1 1021.8 1025.3 1021.1 1016.4 MAX. QNH PRESSURE IN HPA 1032.4 1036.8 1031.6 1021.8 1025.8 1023.5 1014.3 1015.1 1020.8 1028.9 1034.9 1033.6 1036.8 DAY 14 29 26 1 4 12 30 8 25 15 16 9 MIN. QNH PRESSURE IN HPA 1001.3 1012.7 1007.1 1003.3 1004.6 1004.4 1002.7 1002.5 1003.9 1013.7 1019.4 1010.3 1001.3 DAY 20 22 11 7 26 7 7 2 7 10 12 21 MEAN QFF PRESSURE IN HPA 1020.4 1021.3 1019.0 1012.6 1013.5 1011.7 1009.4 1009.9 1013.5 1022.2 1025.6 1021.3 1016.7 MAX. QFF PRESSURE IN HPA 1032.6 1037.0 1031.8 1022.1 1026.1 1023.8 1014.7 1015.5 1021.2 1029.2 1035.2 1033.8 1037.0 DAY 14 29 26 1 4 12 30 8 25 15 16 9 MIN. QFF PRESSURE IN HPA 1001.5 1013.0 1007.4 1003.6 1005.0 1004.8 1003.0 1002.9 1004.2 1014.1 1019.7 1010.6 1001.5 DAY 20 23 11 7 26 7 7 2 7 10 12 21 PRESSURE AT HOUR 1800 UTC. MEAN QFE PRESSURE IN HPA 1022.9 1024.1 1021.9 1015.6 1016.6 1014.5 1012.3 1012.8 1016.7 1024.8 1028.0 1023.7 1019.5 MAX. QFE PRESSURE IN HPA 1035.7 1039.5 1035.1 1024.7 1029.7 1026.1 1017.5 1018.0 1023.1 1031.5 1037.6 1036.1 1039.5 DAY 14 28 26 1 4 12 30 5 28 15 16 9 MIN. QFE PRESSURE IN HPA 1001.6 1015.4 1011.2 1005.8 1007.5 1006.2 1005.1 1004.4 1007.1 1016.8 1021.6 1014.7 1001.6 DAY 20 22 10 7 26 7 7 2 7 10 12 31 MEAN QNH PRESSURE IN HPA 1020.5 1021.6 1019.4 1013.1 1014.1 1012.1 1009.8 1010.3 1014.2 1022.3 1025.5 1021.3 1017.0 MAX. QNH PRESSURE IN HPA 1033.2 1037.0 1032.6 1022.2 1027.2 1023.6 1015.0 1015.5 1020.6 1029.0 1035.1 1033.6 1037.0 DAY 14 28 26 1 4 12 30 5 28 15 16 9 MIN. QNH PRESSURE IN HPA 999.2 1012.9 1008.7 1003.4 1005.0 1003.8 1002.7 1002.0 1004.6 1014.3 1019.1 1012.2 999.2 DAY 20 22 10 7 26 7 7 2 7 10 12 31 MEAN QFF PRESSURE IN HPA 1020.7 1021.8 1019.6 1013.5 1014.4 1012.4 1010.2 1010.7 1014.6 1022.6 1025.8 1021.5 1017.3 MAX. QFF PRESSURE IN HPA 1033.4 1037.2 1032.8 1022.5 1027.5 1023.9 1015.4 1015.9 1020.9 1029.3 1035.4 1033.8 1037.2 DAY 14 28 26 1 4 12 30 5 28 15 16 9 MIN. QFF PRESSURE IN HPA 999.4 1013.2 1009.0 1003.7 1005.4 1004.1 1003.1 1002.4 1005.0 1014.7 1019.4 1012.5 999.4 DAY 20 22 10 7 26 7 7 2 7 10 12 31 PRESSURE AT HOUR 2100 UTC. MEAN QFE PRESSURE IN HPA 1022.6 1023.9 1021.4 1015.3 1016.3 1014.4 1012.2 1012.7 1016.6 1024.5 1027.8 1023.4 1019.3 MAX. QFE PRESSURE IN HPA 1034.4 1039.6 1034.6 1023.9 1028.3 1025.4 1017.2 1017.4 1023.6 1030.5 1037.0 1035.6 1039.6 DAY 13 28 26 1 4 12 30 16 28 14 16 9 MIN. QFE PRESSURE IN HPA 1001.9 1014.6 1011.0 1007.0 1008.0 1006.5 1004.8 1003.3 1006.7 1016.9 1020.4 1014.7 1001.9 DAY 20 22 18 7 26 7 7 2 6 10 30 19 MEAN QNH PRESSURE IN HPA 1020.1 1021.4 1019.0 1012.9 1013.8 1011.9 1009.7 1010.2 1014.1 1022.0 1025.3 1020.9 1016.8 MAX. QNH PRESSURE IN HPA 1031.9 1037.1 1032.1 1021.4 1025.8 1022.9 1014.7 1014.9 1021.1 1028.0 1034.5 1033.1 1037.1 DAY 13 28 26 1 4 12 30 16 28 14 16 9 MIN. QNH PRESSURE IN HPA 999.5 1012.1 1008.5 1004.5 1005.5 1004.1 1002.4 1000.9 1004.3 1014.4 1017.9 1012.2 999.5 DAY 20 22 18 7 26 7 7 2 6 10 30 19 MEAN QFF PRESSURE IN HPA 1020.4 1021.7 1019.2 1013.2 1014.2 1012.3 1010.1 1010.6 1014.5 1022.3 1025.6 1021.2 1017.1 MAX. QFF PRESSURE IN HPA 1032.1 1037.3 1032.3 1021.7 1026.1 1023.2 1015.1 1015.3 1021.4 1028.3 1034.8 1033.3 1037.3 DAY 13 28 26 1 4 12 30 16 28 14 16 9 MIN. QFF PRESSURE IN HPA 999.8 1012.4 1008.8 1004.8 1005.9 1004.4 1002.8 1001.3 1004.6 1014.8 1018.2 1012.5 999.8 DAY 20 22 18 9 26 7 7 2 6 10 30 19 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ASTARA (40709) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 38 25 N LONGITUDE 48 52 E DATA PROCESSING CENTER ELEVATION -18.0 M MEANS AND EXTREMES FOR THE YEAR 2001 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AIR TEMPERATURE (C) 5.2 7.8 10.6 14.3 18.9 22.8 25.6 26.1 22.6 15.9 12.5 8.6 15.9 MINIMUN AIR TEMPERATURE (C) 2.6 4.7 7.5 11.5 15.4 18.4 20.8 22.0 19.4 13.2 9.1 5.9 12.5 DAYS WITH MINIMUM TEMP. >=21 0 0 0 0 0 3 15 25 7 0 0 0 50 DAYS WITH MINIMUM TEMP. <=-4 3 0 0 0 0 0 0 0 0 0 0 0 3 DAYS WITH FREEZING MIN.<= 0 8 0 0 0 0 0 0 0 0 0 0 1 9 TEMPERATURE RECORDS LOWEST(C) -6.2 0.5 4.2 8.0 12.4 14.2 16.8 19.0 15.0 6.2 2.0 0.0 -6.2 DAY 28 1 11 1 26 1 19 13 21 26 24 22 MAXIMUM AIR TEMPERATURE (C) 8.6 12.2 14.5 17.6 22.7 27.2 30.1 30.7 26.3 19.3 17.1 12.1 19.9 DAYS WITH MAXIMUM TEMP. >=30 0 0 0 0 0 3 21 21 0 0 0 0 45 DAYS WITH MAXIMUM TEMP. <= 0 0 0 0 0 0 0 0 0 0 0 0 0 0 TEMPERATURE RECORDS HIGHEST(C) 19.0 21.6 21.0 24.0 28.5 31.0 33.8 34.5 29.4 26.2 23.4 23.5 34.5 DAY 1 24 20 25 14 23 28 10 8 7 7 29 DIF. BETWEEN (MAX.-MIN.) (C) 6.0 7.5 7.0 6.1 7.3 8.8 9.3 8.7 6.9 6.1 8.0 6.2 7.4 MEAN DAILY TEMP. (MDT) (C) 5.6 8.5 11.0 14.5 19.1 22.8 25.5 26.3 22.8 16.3 13.1 9.0 16.2 COOLING DEG. DAYS(BASE 21 0C) 0.0 0.0 0.0 0.0 3.0 57.7 138.9 164.6 62.6 0.0 0.0 0.0 426.9 HEATING DEG. DAYS(BASE 18 0C) 383.3 266.9 216.6 106.3 7.2 0.0 0.0 0.0 1.0 67.3 147.5 279.7 1475.8 DEWPOINT (MEAN C) 3.4 4.9 8.0 11.9 15.4 18.2 19.5 20.2 19.1 13.7 9.4 5.7 12.4 MIXING RATIO (G/KG) 4.89 5.37 6.70 8.75 11.01 13.18 14.42 15.00 13.98 9.87 7.54 5.68 9.70 VAPOUR PRESSURE (HPA) 8.02 8.74 10.86 14.11 17.63 21.01 22.92 23.85 22.32 15.96 12.22 9.25 15.57 SATURATION DEF. (HPA) 1.13 2.10 2.22 2.48 4.43 7.16 10.38 10.58 5.51 2.60 2.69 2.13 4.45 RELATIVE HUMIDITY (MEAN %) 89 84 85 86 81 77 71 72 82 87 83 83 82 RELATIVE HUMIDITY (MAX. %) 97 94 95 95 94 92 88 89 94 96 95 95 94 RELATIVE HUMIDITY (MIN. %) 76 72 73 75 68 59 54 54 67 74 65 69 67 RELATIVE HUMIDITY (MEAN% 03UTC) 94 88 91 92 87 86 78 80 89 92 89 88 88 RELATIVE HUMIDITY (MEAN% 09UTC) 82 77 76 79 72 63 58 58 70 78 71 73 71 RELATIVE HUMIDITY (MEAN% 15UTC) 89 85 86 83 79 71 67 68 81 90 87 86 81 RH=0 => RELATIVE HUMIDITY < 0.5% AMOUNT OF PRECIPITATION MM. 231.9 41.3 132.6 65.8 47.2 42.0 1.7 64.9 182.2 429.6 177.9 62.2 1479.3 DAYS WITH PRECIPITATION >=10 7 1 5 2 2 1 0 3 4 9 4 3 41 DAYS WITH PRECIPITATION >= 5 8 3 5 2 3 1 0 4 6 13 6 5 56 DAYS WITH PRECIPITATION >= 1 11 7 9 7 5 2 1 6 8 16 8 7 87 DAYS WITH PRECIPITATION 12 9 15 13 10 3 2 10 11 20 11 9 125 GREATEST DAILY PRECIPITATION 62.0 17.0 34.0 30.0 17.3 40.0 1.7 28.0 62.4 82.0 71.0 17.0 82.0 DAY 24 18 30 1 3 30 2 25 6 1 13 1 DAY WITH THUNDER STORM 0 0 2 3 7 0 0 0 1 0 1 0 14 DAYS WITH SNOW OR SLEET 5 0 0 0 0 0 0 0 0 0 0 0 5 DAYS WITH DUST 1 0 0 0 0 0 0 0 0 0 0 0 1 WIND DIRECTION (PREVAILING) 360 360 225 135 90 360 135 45 180 225 360 315 135 PREVAILING WIND SPEED(KNOTS) 9.9 8.6 7.6 6.6 7.0 7.2 8.8 6.6 8.1 7.1 7.9 6.3 7.9 PREVAILING WIND PERCENT 10.1 7.6 10.1 14.6 13.7 8.8 7.3 5.2 5.8 5.6 6.7 6.5 4.6 CALMS PERCENT OF WIND 76.2 68.3 64.1 63.8 66.5 59.2 71.4 73.8 79.2 75.8 81.7 77.4 71.5 NO. OF WIND OBSERVATION 248 224 248 240 248 240 248 248 240 248 240 248 2920 VECTOR WIND DIRECTION (MEAN) 342 169 243 139 89 297 149 142 189 206 4 320 147 VECTOR WIND MAGNITUDE(KNOTS) 1.3 0.6 1.3 1.3 1.7 0.3 0.9 0.4 0.5 0.4 0.7 0.4 0.2 WIND STEADINESES (MEAN %) 68.4 17.1 52.0 56.5 70.8 9.7 42.9 22.2 38.5 26.7 50.0 25.0 9.5 WIND SPEED (MEAN KNOTS) 1.9 3.5 2.5 2.3 2.4 3.1 2.1 1.8 1.3 1.5 1.4 1.6 2.1 FASTEST WIND DIRECTION 340 150 60 110 180 330 150 30 270 170 60 270 150 FASTEST WIND SPEED (KNOTS) 19 68 16 17 19 19 19 16 16 16 29 19 68 DAY 25 23 4 10 24 7 11 4 29 1 21 29 DAYS WITH SKY CLEAR (0-2)/8 9 4 7 1 6 17 18 14 12 6 9 4 107 DAYS WITH P.CLOUDY (3-6)/8 5 11 11 14 14 9 8 8 5 7 5 7 104 DAYS WITH CLOUDY (7-8)/8 17 13 13 15 11 4 5 9 13 18 16 20 154 DAYS WITH VISIBILITY =< 2 KM 8 2 6 2 2 0 0 1 5 9 5 4 44 DURATION OF SUNSHINE HOURS 86.5 113.9 145.2 138.5 191.9 299.2 287.9 234.9 156.4 99.2 115.0 77.9 1946.5 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ASTARA (40709) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 38 25 N LONGITUDE 48 52 E DATA PROCESSING CENTER ELEVATION -18.0 M MEANS AND EXTREMES FOR THE YEAR 2001 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL MEAN QFE PRESSURE IN HPA 1028.6 1021.2 1019.8 1017.8 1014.6 1013.0 1012.3 1013.5 1016.4 1022.2 1021.2 1022.9 1018.6 MAX. QFE PRESSURE IN HPA 1040.8 1038.1 1036.9 1035.7 1026.9 1020.8 1017.9 1022.4 1029.4 1035.6 1029.8 1034.6 1040.8 DAY-HOUR 26- 9 9- 6 1- 6 1- 9 18- 6 3-18 1- 6 5- 6 19-18 27- 6 23- 6 3- 6 MIN. QFE PRESSURE IN HPA 1017.4 1001.1 1002.4 1007.3 1001.8 1000.5 1004.8 1003.1 1006.1 1008.8 1007.3 1008.5 1000.5 DAY-HOUR 1- 0 20-21 24- 3 12- 9 8-15 17-15 9-15 30-15 4-15 6-12 17-12 19-18 MEAN QNH PRESSURE IN HPA 1026.1 1018.7 1017.4 1015.4 1012.1 1010.5 1009.8 1011.0 1013.9 1019.7 1018.7 1020.5 1016.2 MAX. QNH PRESSURE IN HPA 1038.3 1035.6 1034.4 1033.2 1024.4 1018.3 1015.4 1019.9 1026.9 1033.1 1027.3 1032.1 1038.3 DAY-HOUR 26- 9 9- 6 1- 6 1- 9 18- 6 3-18 1- 6 5- 6 19-18 27- 6 23- 6 3- 6 MIN. QNH PRESSURE IN HPA 1014.9 998.7 1000.0 1004.8 999.4 998.1 1002.4 1000.7 1003.7 1006.3 1004.8 1006.0 998.1 DAY-HOUR 1- 0 20-21 24- 3 12- 9 8-15 17-15 9-15 30-15 4-15 6-12 17-12 19-18 MEAN QFF PRESSURE IN HPA 1026.3 1019.0 1017.6 1015.7 1012.4 1010.9 1010.2 1011.4 1014.3 1020.0 1019.0 1020.7 1016.5 MAX. QFF PRESSURE IN HPA 1038.5 1035.8 1034.7 1033.4 1024.7 1018.7 1015.8 1020.3 1027.2 1033.3 1027.6 1032.3 1038.5 DAY-HOUR 26- 9 9- 6 1- 6 1- 9 18- 6 3-18 1- 6 5- 6 19-18 27- 6 23- 6 3- 6 MIN. QFF PRESSURE IN HPA 1015.2 999.0 1000.3 1005.2 999.7 998.4 1002.8 1001.1 1004.0 1006.7 1005.1 1006.4 998.4 DAY-HOUR 1- 0 20-21 24- 3 12- 9 8-15 17-15 9-15 30-15 4-15 6-12 17-12 19-18 PRESSURE AT HOUR 0000 UTC. MEAN QFE PRESSURE IN HPA 1028.3 1020.9 1019.4 1017.6 1014.5 1012.7 1012.1 1013.4 1016.3 1021.7 1020.7 1022.8 1018.4 MAX. QFE PRESSURE IN HPA 1040.1 1037.1 1034.7 1032.1 1025.0 1020.6 1016.9 1021.4 1026.5 1034.3 1028.7 1034.3 1040.1 DAY 27 9 11 1 18 4 1 5 19 27 23 3 MIN. QFE PRESSURE IN HPA 1017.4 1001.9 1002.5 1007.8 1002.6 1001.7 1005.6 1003.7 1007.9 1009.9 1012.3 1012.5 1001.7 DAY 1 21 24 12 8 17 19 31 8 6 7 19 MEAN QNH PRESSURE IN HPA 1025.8 1018.4 1016.9 1015.1 1012.1 1010.3 1009.7 1010.9 1013.8 1019.2 1018.2 1020.3 1015.9 MAX. QNH PRESSURE IN HPA 1037.6 1034.6 1032.2 1029.6 1022.5 1018.1 1014.4 1018.9 1024.0 1031.8 1026.2 1031.8 1037.6 DAY 27 9 11 1 18 4 1 5 19 27 23 3 MIN. QNH PRESSURE IN HPA 1014.9 999.5 1000.1 1005.3 1000.2 999.3 1003.2 1001.3 1005.4 1007.4 1009.8 1010.0 999.3 DAY 1 21 24 12 8 17 19 31 8 6 7 19 MEAN QFF PRESSURE IN HPA 1026.0 1018.6 1017.2 1015.4 1012.4 1010.6 1010.1 1011.3 1014.2 1019.6 1018.5 1020.6 1016.2 MAX. QFF PRESSURE IN HPA 1037.8 1034.8 1032.4 1029.9 1022.8 1018.5 1014.8 1019.3 1024.4 1032.0 1026.4 1032.0 1037.8 DAY 27 9 11 1 18 4 1 5 19 27 23 3 MIN. QFF PRESSURE IN HPA 1015.2 999.7 1000.4 1005.6 1000.5 999.6 1003.5 1001.7 1005.8 1007.8 1010.1 1010.3 999.6 DAY 1 21 24 12 8 17 19 31 8 6 17 19 PRESSURE AT HOUR 0300 UTC. MEAN QFE PRESSURE IN HPA 1028.6 1021.1 1019.7 1018.1 1014.9 1013.4 1012.6 1014.0 1016.8 1022.0 1021.0 1023.0 1018.8 MAX. QFE PRESSURE IN HPA 1039.1 1037.5 1034.8 1033.4 1025.4 1020.8 1017.7 1021.7 1026.5 1034.3 1029.3 1033.6 1039.1 DAY 26 9 11 1 18 11 1 5 19 27 23 3 MIN. QFE PRESSURE IN HPA 1018.8 1002.6 1002.4 1007.5 1002.8 1002.4 1006.4 1004.8 1008.2 1010.0 1011.0 1011.9 1002.4 DAY 1 21 24 12 8 17 19 31 8 6 17 19 MEAN QNH PRESSURE IN HPA 1026.1 1018.6 1017.2 1015.6 1012.4 1010.9 1010.2 1011.6 1014.3 1019.5 1018.5 1020.5 1016.3 MAX. QNH PRESSURE IN HPA 1036.6 1035.0 1032.3 1030.9 1022.9 1018.3 1015.2 1019.2 1024.0 1031.8 1026.8 1031.1 1036.6 DAY 26 9 11 1 18 11 1 5 19 27 23 3 MIN. QNH PRESSURE IN HPA 1016.3 1000.2 1000.0 1005.0 1000.4 1000.0 1004.0 1002.4 1005.7 1007.5 1008.5 1009.4 1000.0 DAY 1 21 24 12 8 17 19 31 8 6 17 19 MEAN QFF PRESSURE IN HPA 1026.3 1018.9 1017.5 1015.9 1012.8 1011.3 1010.6 1012.0 1014.7 1019.8 1018.8 1020.8 1016.6 MAX. QFF PRESSURE IN HPA 1036.8 1035.2 1032.5 1031.2 1023.2 1018.7 1015.6 1019.6 1024.4 1032.0 1027.0 1031.3 1036.8 DAY 26 9 11 1 18 11 1 5 19 27 23 3 MIN. QFF PRESSURE IN HPA 1016.6 1000.4 1000.3 1005.3 1000.7 1000.3 1004.3 1002.7 1006.1 1007.9 1008.8 1009.7 1000.3 DAY 1 21 24 12 8 17 19 31 8 6 17 19 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ASTARA (40709) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 38 25 N LONGITUDE 48 52 E DATA PROCESSING CENTER ELEVATION -18.0 M MEANS AND EXTREMES FOR THE YEAR 2001 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 0600 UTC. MEAN QFE PRESSURE IN HPA 1029.6 1022.1 1020.5 1018.9 1015.3 1013.8 1012.9 1014.4 1017.4 1023.0 1022.3 1024.0 1019.5 MAX. QFE PRESSURE IN HPA 1040.6 1038.1 1036.9 1035.6 1026.9 1020.8 1017.9 1022.4 1028.1 1035.6 1029.8 1034.6 1040.6 DAY 26 9 1 1 18 11 1 5 19 27 23 3 MIN. QFE PRESSURE IN HPA 1022.1 1003.6 1003.2 1007.8 1002.2 1002.7 1006.9 1007.1 1008.8 1010.2 1010.5 1011.5 1002.2 DAY 1 21 24 12 8 17 9 31 8 6 17 19 MEAN QNH PRESSURE IN HPA 1027.1 1019.6 1018.0 1016.5 1012.8 1011.4 1010.5 1012.0 1014.9 1020.5 1019.8 1021.5 1017.0 MAX. QNH PRESSURE IN HPA 1038.1 1035.6 1034.4 1033.1 1024.4 1018.3 1015.4 1019.9 1025.6 1033.1 1027.3 1032.1 1038.1 DAY 26 9 1 1 18 11 1 5 19 27 23 3 MIN. QNH PRESSURE IN HPA 1019.6 1001.2 1000.8 1005.3 999.8 1000.3 1004.4 1004.6 1006.3 1007.7 1008.0 1009.0 999.8 DAY 1 21 24 12 8 17 9 31 8 6 17 19 MEAN QFF PRESSURE IN HPA 1027.3 1019.8 1018.3 1016.8 1013.1 1011.7 1010.9 1012.4 1015.3 1020.8 1020.1 1021.7 1017.4 MAX. QFF PRESSURE IN HPA 1038.3 1035.8 1034.7 1033.3 1024.7 1018.7 1015.8 1020.3 1026.0 1033.3 1027.6 1032.3 1038.3 DAY 26 9 1 1 18 11 1 5 19 27 23 3 MIN. QFF PRESSURE IN HPA 1019.9 1001.4 1001.1 1005.7 1000.1 1000.6 1004.8 1005.1 1006.7 1008.1 1008.3 1009.3 1000.1 DAY 1 21 24 12 8 17 9 31 8 6 17 19 PRESSURE AT HOUR 0900 UTC. MEAN QFE PRESSURE IN HPA 1028.8 1021.4 1020.0 1018.3 1014.9 1013.5 1012.6 1013.8 1016.8 1022.4 1021.4 1023.0 1018.9 MAX. QFE PRESSURE IN HPA 1040.8 1037.7 1036.8 1035.7 1026.7 1020.8 1017.0 1021.8 1028.6 1034.5 1028.7 1033.5 1040.8 DAY 26 9 1 1 18 11 1 5 19 27 23 3 MIN. QFE PRESSURE IN HPA 1019.7 1004.3 1003.1 1007.3 1002.7 1002.7 1006.7 1004.9 1008.4 1009.5 1008.1 1010.3 1002.7 DAY 10 21 24 12 8 17 9 30 8 6 17 19 MEAN QNH PRESSURE IN HPA 1026.3 1018.9 1017.6 1015.8 1012.4 1011.0 1010.2 1011.4 1014.3 1019.9 1018.9 1020.5 1016.4 MAX. QNH PRESSURE IN HPA 1038.3 1035.2 1034.3 1033.2 1024.2 1018.3 1014.5 1019.3 1026.1 1032.0 1026.2 1031.0 1038.3 DAY 26 9 1 1 18 11 1 5 19 27 23 3 MIN. QNH PRESSURE IN HPA 1017.2 1001.9 1000.7 1004.8 1000.3 1000.3 1004.3 1002.5 1005.9 1007.0 1005.6 1007.8 1000.3 DAY 10 21 24 12 8 17 9 30 8 6 17 19 MEAN QFF PRESSURE IN HPA 1026.5 1019.1 1017.8 1016.1 1012.8 1011.4 1010.5 1011.8 1014.7 1020.2 1019.2 1020.7 1016.7 MAX. QFF PRESSURE IN HPA 1038.5 1035.4 1034.6 1033.4 1024.5 1018.7 1014.9 1019.7 1026.5 1032.2 1026.5 1031.3 1038.5 DAY 26 9 1 1 18 11 1 5 19 27 23 9 MIN. QFF PRESSURE IN HPA 1017.5 1002.1 1001.0 1005.2 1000.6 1000.6 1004.6 1002.9 1006.3 1007.4 1005.9 1008.1 1000.6 DAY 10 21 24 12 8 17 9 30 8 6 17 19 PRESSURE AT HOUR 1200 UTC. MEAN QFE PRESSURE IN HPA 1028.1 1020.3 1019.3 1017.4 1014.0 1012.5 1011.8 1012.9 1015.8 1021.5 1020.7 1022.3 1018.0 MAX. QFE PRESSURE IN HPA 1040.2 1037.0 1035.1 1034.8 1025.2 1020.1 1016.0 1020.6 1028.9 1033.9 1027.9 1033.2 1040.2 DAY 26 9 1 1 18 10 1 11 19 27 23 2 MIN. QFE PRESSURE IN HPA 1018.4 1004.8 1002.7 1009.0 1002.3 1001.0 1005.4 1003.3 1007.5 1008.8 1007.3 1009.3 1001.0 DAY 10 20 24 12 8 17 9 30 26 6 17 19 MEAN QNH PRESSURE IN HPA 1025.6 1017.8 1016.8 1014.9 1011.5 1010.0 1009.3 1010.4 1013.3 1019.0 1018.3 1019.8 1015.6 MAX. QNH PRESSURE IN HPA 1037.7 1034.5 1032.6 1032.3 1022.7 1017.6 1013.5 1018.1 1026.4 1031.4 1025.4 1030.7 1037.7 DAY 26 9 1 1 18 10 1 11 19 27 23 2 MIN. QNH PRESSURE IN HPA 1015.9 1002.4 1000.3 1006.5 999.9 998.6 1003.0 1000.9 1005.0 1006.3 1004.8 1006.8 998.6 DAY 10 20 24 12 8 17 9 30 26 6 17 19 MEAN QFF PRESSURE IN HPA 1025.8 1018.1 1017.1 1015.2 1011.8 1010.4 1009.7 1010.8 1013.7 1019.3 1018.6 1020.1 1015.9 MAX. QFF PRESSURE IN HPA 1037.9 1034.7 1032.8 1032.5 1023.1 1018.0 1013.9 1018.5 1026.8 1031.6 1025.7 1030.9 1037.9 DAY 26 9 1 1 18 10 1 11 19 27 23 2 MIN. QFF PRESSURE IN HPA 1016.2 1002.6 1000.6 1006.8 1000.2 998.9 1003.4 1001.3 1005.4 1006.7 1005.1 1007.2 998.9 DAY 10 20 24 12 8 17 9 30 26 6 17 19 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ASTARA (40709) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 38 25 N LONGITUDE 48 52 E DATA PROCESSING CENTER ELEVATION -18.0 M MEANS AND EXTREMES FOR THE YEAR 2001 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 1500 UTC. MEAN QFE PRESSURE IN HPA 1028.5 1021.0 1019.5 1017.2 1013.8 1012.3 1011.5 1012.5 1015.6 1022.0 1021.2 1022.9 1018.1 MAX. QFE PRESSURE IN HPA 1040.2 1037.0 1035.2 1035.1 1024.5 1019.6 1015.7 1019.9 1028.7 1033.6 1028.5 1033.9 1040.2 DAY 26 9 10 1 18 10 1 5 19 26 28 2 MIN. QFE PRESSURE IN HPA 1017.9 1003.3 1002.5 1009.3 1001.8 1000.5 1004.8 1003.1 1006.1 1010.4 1009.0 1009.1 1000.5 DAY 10 20 24 19 8 17 9 30 4 6 17 19 MEAN QNH PRESSURE IN HPA 1026.0 1018.5 1017.0 1014.7 1011.3 1009.8 1009.0 1010.1 1013.1 1019.5 1018.8 1020.4 1015.7 MAX. QNH PRESSURE IN HPA 1037.7 1034.5 1032.7 1032.6 1022.0 1017.1 1013.2 1017.4 1026.2 1031.1 1026.0 1031.4 1037.7 DAY 26 9 10 1 18 10 1 5 19 26 28 2 MIN. QNH PRESSURE IN HPA 1015.4 1000.9 1000.1 1006.8 999.4 998.1 1002.4 1000.7 1003.7 1007.9 1006.5 1006.6 998.1 DAY 10 20 24 19 8 17 9 30 4 6 17 19 MEAN QFF PRESSURE IN HPA 1026.2 1018.7 1017.3 1015.0 1011.6 1010.2 1009.4 1010.5 1013.5 1019.8 1019.0 1020.7 1016.0 MAX. QFF PRESSURE IN HPA 1037.9 1034.7 1032.9 1032.8 1022.3 1017.5 1013.6 1017.8 1026.6 1031.4 1026.3 1031.6 1037.9 DAY 26 9 10 1 18 10 1 5 19 27 28 2 MIN. QFF PRESSURE IN HPA 1015.7 1001.1 1000.4 1007.2 999.7 998.4 1002.8 1001.1 1004.0 1008.3 1006.8 1006.9 998.4 DAY 10 20 24 19 8 17 9 30 4 6 17 19 PRESSURE AT HOUR 1800 UTC. MEAN QFE PRESSURE IN HPA 1028.8 1021.7 1020.4 1017.9 1014.8 1013.1 1012.5 1013.4 1016.4 1022.6 1021.4 1022.9 1018.8 MAX. QFE PRESSURE IN HPA 1040.5 1037.5 1036.0 1034.8 1025.6 1020.8 1016.5 1021.2 1029.4 1034.7 1028.9 1034.3 1040.5 DAY 26 9 10 1 17 3 15 4 19 26 19 2 MIN. QFE PRESSURE IN HPA 1017.9 1002.6 1003.4 1009.5 1002.1 1002.4 1005.7 1004.1 1007.2 1011.6 1010.8 1008.5 1002.1 DAY 10 20 23 11 8 17 9 30 4 24 21 19 MEAN QNH PRESSURE IN HPA 1026.3 1019.2 1017.9 1015.4 1012.3 1010.7 1010.1 1011.0 1013.9 1020.2 1019.0 1020.4 1016.4 MAX. QNH PRESSURE IN HPA 1038.0 1035.0 1033.5 1032.3 1023.1 1018.3 1014.0 1018.7 1026.9 1032.2 1026.4 1031.8 1038.0 DAY 26 9 10 1 17 3 15 4 19 26 19 2 MIN. QNH PRESSURE IN HPA 1015.4 1000.2 1001.0 1007.0 999.7 1000.0 1003.3 1001.7 1004.7 1009.1 1008.3 1006.0 999.7 DAY 10 20 23 11 8 17 9 30 4 24 21 19 MEAN QFF PRESSURE IN HPA 1026.5 1019.4 1018.2 1015.7 1012.7 1011.0 1010.5 1011.4 1014.3 1020.5 1019.2 1020.7 1016.7 MAX. QFF PRESSURE IN HPA 1038.2 1035.2 1033.7 1032.5 1023.4 1018.7 1014.4 1019.1 1027.2 1032.4 1026.6 1032.0 1038.2 DAY 26 9 10 1 17 3 15 4 19 26 19 2 MIN. QFF PRESSURE IN HPA 1015.7 1000.4 1001.3 1007.3 1000.0 1000.3 1003.7 1002.1 1005.1 1009.5 1008.7 1006.4 1000.0 DAY 10 20 23 11 8 17 9 30 4 24 21 19 PRESSURE AT HOUR 2100 UTC. MEAN QFE PRESSURE IN HPA 1028.5 1021.4 1020.1 1017.6 1014.6 1012.9 1012.4 1013.5 1016.4 1022.2 1020.9 1022.8 1018.6 MAX. QFE PRESSURE IN HPA 1040.5 1036.8 1035.0 1032.4 1025.3 1020.8 1016.0 1021.4 1027.9 1034.3 1028.3 1034.3 1040.5 DAY 26 8 10 1 17 3 1 4 19 26 22 2 MIN. QFE PRESSURE IN HPA 1017.9 1001.1 1003.4 1008.2 1002.1 1002.1 1006.6 1003.7 1008.2 1011.3 1010.3 1011.1 1001.1 DAY 10 20 23 11 8 16 9 30 7 24 21 19 MEAN QNH PRESSURE IN HPA 1026.1 1019.0 1017.6 1015.2 1012.1 1010.5 1009.9 1011.0 1013.9 1019.8 1018.5 1020.3 1016.1 MAX. QNH PRESSURE IN HPA 1038.0 1034.3 1032.5 1029.9 1022.8 1018.3 1013.5 1018.9 1025.4 1031.8 1025.8 1031.8 1038.0 DAY 26 8 10 1 17 3 1 4 19 26 22 2 MIN. QNH PRESSURE IN HPA 1015.4 998.7 1001.0 1005.7 999.7 999.7 1004.2 1001.3 1005.7 1008.8 1007.8 1008.6 998.7 DAY 10 20 23 11 8 16 9 30 7 24 21 19 MEAN QFF PRESSURE IN HPA 1026.3 1019.2 1017.9 1015.5 1012.5 1010.8 1010.3 1011.4 1014.3 1020.1 1018.7 1020.6 1016.5 MAX. QFF PRESSURE IN HPA 1038.2 1034.5 1032.7 1030.2 1023.1 1018.7 1013.9 1019.3 1025.7 1032.0 1026.1 1032.0 1038.2 DAY 26 8 10 1 17 3 15 4 19 26 28 2 MIN. QFF PRESSURE IN HPA 1015.7 999.0 1001.3 1006.0 1000.0 1000.0 1004.5 1001.7 1006.1 1009.2 1008.2 1008.9 999.0 DAY 10 20 23 11 8 16 18 30 7 24 21 19 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ASTARA (40709) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 38 25 N LONGITUDE 48 52 E DATA PROCESSING CENTER ELEVATION -18.0 M MEANS AND EXTREMES FOR THE YEAR 2002 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AIR TEMPERATURE (C) 5.6 7.9 10.6 12.2 16.4 22.5 26.4 25.8 23.4 19.3 12.8 3.3 15.5 MINIMUN AIR TEMPERATURE (C) 2.6 4.0 7.2 10.0 13.2 18.1 21.2 22.3 19.3 16.5 9.4 0.9 12.1 DAYS WITH MINIMUM TEMP. >=21 0 0 0 0 0 2 18 22 2 0 0 0 44 DAYS WITH MINIMUM TEMP. <=-4 0 0 0 0 0 0 0 0 0 0 0 1 1 DAYS WITH FREEZING MIN.<= 0 6 3 0 0 0 0 0 0 0 0 0 15 24 TEMPERATURE RECORDS LOWEST(C) -2.4 -1.0 3.0 7.0 8.0 14.4 17.5 18.5 17.0 10.2 4.0 -5.0 -5.0 DAY 20 17 1 9 14 4 2 29 10 23 30 28 MAXIMUM AIR TEMPERATURE (C) 9.0 12.3 14.7 14.7 19.6 26.6 31.3 29.7 27.6 22.8 16.7 6.5 19.3 DAYS WITH MAXIMUM TEMP. >=30 0 0 0 0 0 3 22 19 0 0 0 0 44 DAYS WITH MAXIMUM TEMP. <= 0 0 0 0 0 0 0 0 0 0 0 0 0 0 TEMPERATURE RECORDS HIGHEST(C) 15.4 25.4 28.4 20.0 26.6 30.8 35.6 35.0 29.2 27.0 22.6 18.6 35.6 DAY 1 26 27 29 30 22 16 6 16 2 10 31 DIF. BETWEEN (MAX.-MIN.) (C) 6.4 8.3 7.5 4.7 6.4 8.5 10.1 7.4 8.3 6.3 7.3 5.6 7.2 MEAN DAILY TEMP. (MDT) (C) 5.8 8.2 10.9 12.3 16.4 22.4 26.3 26.0 23.5 19.6 13.1 3.7 15.7 COOLING DEG. DAYS(BASE 21 0C) 0.0 0.0 0.0 0.0 2.3 45.1 163.6 156.2 75.8 10.4 0.0 0.0 453.5 HEATING DEG. DAYS(BASE 18 0C) 378.7 275.3 220.8 169.9 67.5 0.0 0.0 0.0 0.0 14.3 148.7 442.5 1717.8 DEWPOINT (MEAN C) 2.5 4.2 7.6 10.0 13.9 17.6 19.2 20.4 19.6 16.7 10.4 0.6 11.9 MIXING RATIO (G/KG) 4.55 5.18 6.51 7.67 9.96 12.74 14.15 15.25 14.43 12.06 7.91 3.99 9.53 VAPOUR PRESSURE (HPA) 7.43 8.43 10.55 12.39 16.02 20.33 22.50 24.18 23.03 19.37 12.85 6.54 15.30 SATURATION DEF. (HPA) 1.83 2.55 2.53 1.88 3.03 7.27 12.64 9.65 6.11 3.37 2.27 1.46 4.55 RELATIVE HUMIDITY (MEAN %) 82 80 83 88 86 75 67 74 81 86 86 84 81 RELATIVE HUMIDITY (MAX. %) 94 93 95 96 95 91 86 89 95 96 96 94 93 RELATIVE HUMIDITY (MIN. %) 65 64 70 76 73 58 48 58 65 72 71 72 66 RELATIVE HUMIDITY (MEAN% 03UTC) 88 87 90 94 91 86 75 84 89 93 92 89 88 RELATIVE HUMIDITY (MEAN% 09UTC) 71 70 76 82 77 62 52 64 69 74 76 77 71 RELATIVE HUMIDITY (MEAN% 15UTC) 81 81 83 86 84 70 62 68 80 87 90 86 80 RH=0 => RELATIVE HUMIDITY < 0.5% AMOUNT OF PRECIPITATION MM. 55.7 23.1 141.1 126.0 181.8 11.1 22.5 89.7 63.9 227.4 185.3 217.0 1344.6 DAYS WITH PRECIPITATION >=10 3 1 5 3 4 0 2 4 2 5 8 8 45 DAYS WITH PRECIPITATION >= 5 4 2 8 7 8 1 2 5 3 6 8 13 67 DAYS WITH PRECIPITATION >= 1 5 2 11 18 13 4 3 8 4 7 9 15 99 DAYS WITH PRECIPITATION 14 3 13 22 15 5 5 11 5 13 11 18 135 GREATEST DAILY PRECIPITATION 16.0 14.0 42.0 27.0 51.0 5.9 11.0 33.0 44.0 97.0 43.0 42.0 97.0 DAY 23 16 18 21 9 30 22 28 20 15 7 10 DAY WITH THUNDER STORM 0 0 1 4 4 3 6 4 1 2 0 0 25 DAYS WITH SNOW OR SLEET 2 1 0 0 0 0 0 0 0 0 0 10 13 DAYS WITH DUST 0 0 0 0 1 0 0 0 0 0 0 0 1 WIND DIRECTION (PREVAILING) 360 135 135 135 135 135 135 135 90 135 315 315 135 PREVAILING WIND SPEED(KNOTS) 5.2 6.6 6.7 7.1 8.4 8.6 7.3 6.6 5.6 6.7 6.3 7.4 7.2 PREVAILING WIND PERCENT 6.9 10.7 14.5 17.9 20.6 17.5 10.1 10.1 8.8 3.6 8.8 14.5 10.2 CALMS PERCENT OF WIND 75.8 70.5 67.7 67.1 67.3 54.2 66.1 69.8 72.5 87.9 84.2 75.4 71.6 NO. OF WIND OBSERVATION 248 224 248 240 248 240 248 248 240 248 240 248 2920 VECTOR WIND DIRECTION (MEAN) 55 126 133 152 138 128 106 87 94 39 341 321 117 VECTOR WIND MAGNITUDE(KNOTS) 0.4 0.6 0.9 1.6 2.1 2.2 1.2 0.5 1.0 0.3 0.5 1.4 0.7 WIND STEADINESES (MEAN %) 26.7 25.0 42.9 64.0 84.0 57.9 54.5 26.3 62.5 37.5 50.0 82.4 35.0 WIND SPEED (MEAN KNOTS) 1.5 2.4 2.1 2.5 2.5 3.8 2.2 1.9 1.6 0.8 1.0 1.7 2.0 FASTEST WIND DIRECTION 180 60 360 170 140 150 160 330 140 350 310 310 60 FASTEST WIND SPEED (KNOTS) 23 29 17 17 19 19 16 16 12 16 16 23 29 DAY 31 27 5 20 14 28 18 12 16 21 25 31 DAYS WITH SKY CLEAR (0-2)/8 7 6 7 0 11 15 24 13 18 6 7 6 120 DAYS WITH P.CLOUDY (3-6)/8 8 14 8 3 6 12 4 6 9 10 11 5 96 DAYS WITH CLOUDY (7-8)/8 16 8 16 27 14 3 3 12 3 15 12 20 149 DAYS WITH VISIBILITY =< 2 KM 7 5 8 7 3 0 0 3 2 4 10 11 60 DURATION OF SUNSHINE HOURS 93.3 154.3 140.5 48.1 189.3 276.2 330.2 205.3 232.0 111.3 117.8 65.5 1963.8 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ASTARA (40709) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 38 25 N LONGITUDE 48 52 E DATA PROCESSING CENTER ELEVATION -18.0 M MEANS AND EXTREMES FOR THE YEAR 2002 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL MEAN QFE PRESSURE IN HPA 1024.9 1022.8 1019.2 1017.6 1017.7 1013.4 1012.4 1011.9 1016.3 1019.3 1024.5 1026.5 1018.9 MAX. QFE PRESSURE IN HPA 1035.5 1037.9 1040.5 1025.9 1029.0 1022.3 1019.9 1022.9 1024.7 1029.8 1033.2 1043.4 1043.4 DAY-HOUR 27- 6 18- 6 6- 6 11- 6 16-18 24- 9 20-18 30-18 20-18 22-18 16- 6 2-18 MIN. QFE PRESSURE IN HPA 1011.8 1002.2 1000.4 1005.9 1005.4 1003.9 1001.9 1001.8 1010.1 1007.6 1006.4 1008.5 1000.4 DAY-HOUR 7-12 26-15 27- 0 3- 9 31-21 18-15 24-18 15-15 17-15 21-12 12- 0 21- 3 MEAN QNH PRESSURE IN HPA 1022.4 1020.3 1016.7 1015.1 1015.2 1010.9 1009.9 1009.4 1013.8 1016.8 1022.0 1024.0 1016.4 MAX. QNH PRESSURE IN HPA 1033.0 1035.4 1038.0 1023.4 1026.5 1019.8 1017.4 1020.4 1022.2 1027.3 1030.7 1040.9 1040.9 DAY-HOUR 27- 6 18- 6 6- 6 11- 6 16-18 24- 9 20-18 30-18 20-18 22-18 16- 6 2-18 MIN. QNH PRESSURE IN HPA 1009.3 999.8 998.0 1003.5 1003.0 1001.5 999.5 999.4 1007.6 1005.1 1004.0 1006.0 998.0 DAY-HOUR 7-12 26-15 27- 0 3- 9 31-21 18-15 24-18 15-15 17-15 21-12 12- 0 21- 3 MEAN QFF PRESSURE IN HPA 1022.6 1020.6 1017.0 1015.4 1015.5 1011.3 1010.3 1009.8 1014.2 1017.2 1022.3 1024.2 1016.7 MAX. QFF PRESSURE IN HPA 1033.2 1035.6 1038.2 1023.7 1026.8 1020.2 1017.8 1020.8 1022.6 1027.6 1031.0 1041.1 1041.1 DAY-HOUR 27- 6 18- 6 6- 6 11- 6 16-18 24- 9 20-18 30-18 21- 6 22-18 16- 6 2-18 MIN. QFF PRESSURE IN HPA 1009.6 1000.1 998.3 1003.7 1003.3 1001.8 999.9 999.8 1008.0 1005.5 1004.3 1006.2 998.3 DAY-HOUR 7-12 26-15 27- 0 3- 9 31-21 18-15 24-18 15-15 17-15 21-12 12- 3 21- 3 PRESSURE AT HOUR 0000 UTC. MEAN QFE PRESSURE IN HPA 1024.7 1022.5 1018.8 1017.1 1017.5 1012.9 1012.2 1011.8 1016.1 1019.0 1024.4 1026.4 1018.6 MAX. QFE PRESSURE IN HPA 1034.7 1036.2 1036.5 1024.6 1026.9 1019.8 1018.5 1022.2 1024.2 1027.2 1032.1 1042.6 1042.6 DAY 11 19 6 11 17 25 1 31 21 23 28 3 MIN. QFE PRESSURE IN HPA 1012.8 1006.3 1000.4 1007.3 1008.6 1005.0 1003.2 1003.6 1010.4 1009.3 1006.4 1009.0 1000.4 DAY 2 26 27 4 28 19 25 17 19 30 12 21 MEAN QNH PRESSURE IN HPA 1022.2 1020.0 1016.3 1014.6 1015.0 1010.4 1009.7 1009.3 1013.7 1016.5 1021.9 1024.0 1016.1 MAX. QNH PRESSURE IN HPA 1032.2 1033.7 1034.0 1022.1 1024.4 1017.3 1016.0 1019.7 1021.7 1024.7 1029.6 1040.1 1040.1 DAY 11 19 6 11 17 25 1 31 21 23 28 3 MIN. QNH PRESSURE IN HPA 1010.3 1003.9 998.0 1004.8 1006.1 1002.6 1000.8 1001.2 1007.9 1006.8 1004.0 1006.5 998.0 DAY 2 26 27 4 28 19 25 17 19 30 12 21 MEAN QFF PRESSURE IN HPA 1022.4 1020.3 1016.6 1014.9 1015.3 1010.8 1010.1 1009.7 1014.0 1016.9 1022.2 1024.2 1016.4 MAX. QFF PRESSURE IN HPA 1032.4 1033.9 1034.2 1022.4 1024.7 1017.7 1016.4 1020.1 1022.1 1025.0 1029.9 1040.3 1040.3 DAY 11 19 6 11 17 25 3 31 21 23 28 3 MIN. QFF PRESSURE IN HPA 1010.6 1004.1 998.3 1005.1 1006.5 1002.9 1001.2 1001.6 1008.3 1007.2 1004.3 1006.7 998.3 DAY 8 26 27 4 28 19 25 17 19 30 12 21 PRESSURE AT HOUR 0300 UTC. MEAN QFE PRESSURE IN HPA 1024.7 1023.2 1019.2 1017.5 1017.9 1013.6 1012.7 1012.4 1016.8 1019.4 1024.5 1026.4 1019.0 MAX. QFE PRESSURE IN HPA 1034.3 1036.0 1038.7 1025.2 1027.8 1020.2 1019.2 1022.1 1024.7 1026.1 1031.7 1042.0 1042.0 DAY 11 19 6 11 17 25 3 30 21 31 16 3 MIN. QFE PRESSURE IN HPA 1012.0 1006.2 1002.0 1007.7 1008.6 1005.2 1004.6 1004.5 1010.8 1010.4 1006.4 1008.5 1002.0 DAY 8 25 27 4 28 19 24 8 19 21 12 21 MEAN QNH PRESSURE IN HPA 1022.2 1020.7 1016.8 1015.1 1015.4 1011.1 1010.3 1010.0 1014.4 1016.9 1022.1 1023.9 1016.6 MAX. QNH PRESSURE IN HPA 1031.8 1033.5 1036.2 1022.7 1025.3 1017.7 1016.7 1019.6 1022.2 1023.6 1029.2 1039.5 1039.5 DAY 11 19 6 11 17 25 3 30 21 31 16 3 MIN. QNH PRESSURE IN HPA 1009.5 1003.8 999.6 1005.2 1006.1 1002.8 1002.2 1002.1 1008.3 1007.9 1004.0 1006.0 999.6 DAY 8 25 27 4 28 19 24 8 19 21 12 21 MEAN QFF PRESSURE IN HPA 1022.4 1021.0 1017.0 1015.3 1015.7 1011.5 1010.7 1010.3 1014.7 1017.3 1022.3 1024.1 1016.9 MAX. QFF PRESSURE IN HPA 1032.0 1033.7 1036.4 1023.0 1025.6 1018.1 1017.1 1020.0 1022.6 1023.9 1029.5 1039.7 1039.7 DAY 11 19 6 11 17 25 3 30 21 31 16 3 MIN. QFF PRESSURE IN HPA 1009.8 1004.0 999.8 1005.5 1006.5 1003.1 1002.6 1002.5 1008.7 1008.3 1004.3 1006.2 999.8 DAY 8 25 27 4 28 19 24 8 19 21 12 21 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ASTARA (40709) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 38 25 N LONGITUDE 48 52 E DATA PROCESSING CENTER ELEVATION -18.0 M MEANS AND EXTREMES FOR THE YEAR 2002 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 0600 UTC. MEAN QFE PRESSURE IN HPA 1025.8 1024.4 1020.3 1018.1 1018.5 1013.9 1013.1 1012.8 1017.4 1020.2 1025.5 1027.6 1019.8 MAX. QFE PRESSURE IN HPA 1035.5 1037.9 1040.5 1025.9 1027.8 1020.6 1019.7 1022.1 1024.7 1027.0 1033.2 1042.8 1042.8 DAY 27 18 6 11 17 24 3 30 21 31 16 2 MIN. QFE PRESSURE IN HPA 1013.5 1006.4 1005.1 1007.3 1009.0 1005.4 1004.6 1004.8 1011.6 1010.1 1009.1 1009.8 1004.6 DAY 8 26 27 3 28 19 24 7 19 21 12 21 MEAN QNH PRESSURE IN HPA 1023.3 1021.9 1017.8 1015.6 1016.0 1011.5 1010.7 1010.3 1014.9 1017.7 1023.0 1025.1 1017.3 MAX. QNH PRESSURE IN HPA 1033.0 1035.4 1038.0 1023.4 1025.3 1018.1 1017.2 1019.6 1022.2 1024.5 1030.7 1040.3 1040.3 DAY 27 18 6 11 17 24 3 30 21 31 16 2 MIN. QNH PRESSURE IN HPA 1011.0 1004.0 1002.7 1004.8 1006.5 1003.0 1002.2 1002.4 1009.1 1007.6 1006.6 1007.3 1002.2 DAY 8 26 27 3 28 19 24 7 19 21 12 21 MEAN QFF PRESSURE IN HPA 1023.5 1022.2 1018.0 1015.9 1016.4 1011.8 1011.1 1010.7 1015.3 1018.1 1023.3 1025.3 1017.6 MAX. QFF PRESSURE IN HPA 1033.2 1035.6 1038.2 1023.7 1025.6 1018.5 1017.6 1020.0 1022.6 1024.8 1031.0 1040.5 1040.5 DAY 27 18 6 11 17 24 3 30 21 31 16 2 MIN. QFF PRESSURE IN HPA 1011.3 1004.3 1003.0 1005.1 1006.9 1003.3 1002.6 1002.8 1009.5 1008.0 1007.0 1007.5 1002.6 DAY 8 26 27 3 28 19 24 7 19 21 12 21 PRESSURE AT HOUR 0900 UTC. MEAN QFE PRESSURE IN HPA 1024.9 1023.6 1019.6 1017.6 1018.3 1013.7 1012.6 1012.1 1016.7 1019.4 1024.6 1026.5 1019.1 MAX. QFE PRESSURE IN HPA 1034.7 1036.9 1039.5 1025.3 1027.8 1022.3 1019.1 1022.2 1023.6 1028.4 1033.0 1043.1 1043.1 DAY 17 18 6 11 16 24 1 29 21 22 16 2 MIN. QFE PRESSURE IN HPA 1013.2 1004.8 1005.5 1005.9 1009.6 1005.4 1003.8 1004.2 1011.3 1008.6 1010.4 1009.5 1003.8 DAY 7 26 27 3 31 19 24 17 11 21 10 21 MEAN QNH PRESSURE IN HPA 1022.4 1021.1 1017.1 1015.2 1015.8 1011.2 1010.2 1009.7 1014.2 1017.0 1022.1 1024.0 1016.6 MAX. QNH PRESSURE IN HPA 1032.2 1034.4 1037.0 1022.8 1025.3 1019.8 1016.6 1019.7 1021.1 1025.9 1030.5 1040.6 1040.6 DAY 17 18 6 11 16 24 1 29 21 22 16 2 MIN. QNH PRESSURE IN HPA 1010.7 1002.4 1003.1 1003.5 1007.1 1003.0 1001.4 1001.8 1008.8 1006.1 1007.9 1007.0 1001.4 DAY 7 26 27 3 31 19 24 17 11 21 10 21 MEAN QFF PRESSURE IN HPA 1022.6 1021.3 1017.4 1015.5 1016.1 1011.6 1010.6 1010.1 1014.6 1017.3 1022.4 1024.2 1017.0 MAX. QFF PRESSURE IN HPA 1032.4 1034.6 1037.2 1023.1 1025.6 1020.2 1017.0 1020.1 1021.5 1026.2 1030.8 1040.8 1040.8 DAY 17 18 6 11 16 24 1 29 29 22 16 2 MIN. QFF PRESSURE IN HPA 1011.0 1002.7 1003.4 1003.7 1007.5 1003.3 1001.8 1002.2 1009.2 1006.5 1008.3 1007.3 1001.8 DAY 7 26 27 3 31 19 24 17 11 21 10 21 PRESSURE AT HOUR 1200 UTC. MEAN QFE PRESSURE IN HPA 1024.1 1022.0 1018.5 1017.0 1017.5 1012.9 1011.9 1011.2 1015.6 1018.6 1023.8 1026.0 1018.3 MAX. QFE PRESSURE IN HPA 1034.4 1035.9 1036.7 1024.1 1027.9 1022.1 1018.4 1021.8 1022.5 1028.5 1032.3 1042.6 1042.6 DAY 17 18 6 11 16 24 2 29 29 22 16 2 MIN. QFE PRESSURE IN HPA 1011.8 1003.3 1004.2 1006.0 1007.7 1005.2 1002.4 1002.7 1010.3 1007.6 1009.9 1010.4 1002.4 DAY 7 26 26 3 28 19 24 15 10 21 10 21 MEAN QNH PRESSURE IN HPA 1021.7 1019.6 1016.0 1014.5 1015.0 1010.4 1009.4 1008.7 1013.1 1016.2 1021.4 1023.5 1015.8 MAX. QNH PRESSURE IN HPA 1031.9 1033.4 1034.2 1021.6 1025.4 1019.6 1015.9 1019.3 1020.0 1026.0 1029.8 1040.1 1040.1 DAY 17 18 6 11 16 24 2 29 29 22 16 2 MIN. QNH PRESSURE IN HPA 1009.3 1000.9 1001.8 1003.6 1005.2 1002.8 1000.0 1000.3 1007.8 1005.1 1007.4 1007.9 1000.0 DAY 7 26 26 3 28 19 24 15 10 21 10 21 MEAN QFF PRESSURE IN HPA 1021.9 1019.8 1016.3 1014.8 1015.3 1010.8 1009.8 1009.1 1013.5 1016.5 1021.6 1023.7 1016.1 MAX. QFF PRESSURE IN HPA 1032.1 1033.6 1034.4 1021.9 1025.7 1020.0 1016.3 1019.7 1020.4 1026.3 1030.1 1040.3 1040.3 DAY 17 18 6 11 16 24 2 29 29 22 16 2 MIN. QFF PRESSURE IN HPA 1009.6 1001.2 1002.0 1003.8 1005.6 1003.1 1000.4 1000.7 1008.2 1005.5 1007.7 1008.1 1000.4 DAY 7 26 26 3 28 19 24 15 10 21 10 21 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ASTARA (40709) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 38 25 N LONGITUDE 48 52 E DATA PROCESSING CENTER ELEVATION -18.0 M MEANS AND EXTREMES FOR THE YEAR 2002 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 1500 UTC. MEAN QFE PRESSURE IN HPA 1024.8 1022.2 1018.9 1017.3 1017.1 1012.7 1011.6 1011.1 1015.6 1019.0 1024.2 1026.4 1018.4 MAX. QFE PRESSURE IN HPA 1034.7 1036.8 1035.3 1024.2 1028.0 1021.0 1018.1 1021.8 1023.1 1029.4 1032.3 1043.3 1043.3 DAY 17 18 6 11 16 24 2 29 20 22 16 2 MIN. QFE PRESSURE IN HPA 1012.6 1002.2 1003.2 1006.6 1005.6 1003.9 1003.8 1001.8 1010.1 1008.6 1009.8 1012.5 1001.8 DAY 7 26 26 3 31 18 24 15 17 21 10 21 MEAN QNH PRESSURE IN HPA 1022.3 1019.7 1016.4 1014.9 1014.6 1010.3 1009.2 1008.6 1013.2 1016.5 1021.7 1023.9 1015.9 MAX. QNH PRESSURE IN HPA 1032.2 1034.3 1032.8 1021.7 1025.5 1018.5 1015.6 1019.3 1020.6 1026.9 1029.8 1040.8 1040.8 DAY 17 18 6 11 16 24 2 29 20 22 16 2 MIN. QNH PRESSURE IN HPA 1010.1 999.8 1000.8 1004.2 1003.2 1001.5 1001.4 999.4 1007.6 1006.1 1007.3 1010.0 999.4 DAY 7 26 26 3 31 18 24 15 17 21 10 21 MEAN QFF PRESSURE IN HPA 1022.5 1019.9 1016.7 1015.1 1014.9 1010.6 1009.6 1009.0 1013.5 1016.9 1022.0 1024.1 1016.2 MAX. QFF PRESSURE IN HPA 1032.4 1034.5 1033.0 1022.0 1025.8 1018.9 1016.0 1019.7 1021.0 1027.2 1030.1 1041.0 1041.0 DAY 17 18 6 11 16 24 2 29 20 22 27 2 MIN. QFF PRESSURE IN HPA 1010.4 1000.1 1001.0 1004.4 1003.5 1001.8 1001.8 999.8 1008.0 1006.5 1007.6 1010.2 999.8 DAY 7 26 26 3 31 18 24 15 17 21 10 21 PRESSURE AT HOUR 1800 UTC. MEAN QFE PRESSURE IN HPA 1025.1 1022.6 1019.5 1018.2 1017.7 1013.8 1012.5 1012.1 1016.3 1019.5 1024.6 1026.5 1019.0 MAX. QFE PRESSURE IN HPA 1034.7 1037.5 1034.6 1024.6 1029.0 1021.9 1019.9 1022.9 1024.7 1029.8 1032.8 1043.4 1043.4 DAY 17 18 10 12 16 24 20 30 20 22 27 2 MIN. QFE PRESSURE IN HPA 1013.9 1002.3 1002.5 1008.3 1006.0 1003.9 1001.9 1003.1 1010.3 1009.5 1009.7 1011.6 1001.9 DAY 7 26 26 3 28 18 24 15 17 29 10 24 MEAN QNH PRESSURE IN HPA 1022.6 1020.1 1017.1 1015.7 1015.2 1011.4 1010.0 1009.6 1013.8 1017.0 1022.1 1024.0 1016.6 MAX. QNH PRESSURE IN HPA 1032.2 1035.0 1032.1 1022.1 1026.5 1019.4 1017.4 1020.4 1022.2 1027.3 1030.3 1040.9 1040.9 DAY 17 18 10 12 16 24 20 30 20 22 27 2 MIN. QNH PRESSURE IN HPA 1011.4 999.9 1000.1 1005.8 1003.6 1001.5 999.5 1000.7 1007.8 1007.0 1007.2 1009.1 999.5 DAY 7 26 26 3 28 18 24 15 17 29 10 24 MEAN QFF PRESSURE IN HPA 1022.8 1020.4 1017.3 1016.0 1015.6 1011.7 1010.4 1010.0 1014.2 1017.4 1022.4 1024.2 1016.9 MAX. QFF PRESSURE IN HPA 1032.4 1035.2 1032.4 1022.4 1026.8 1019.8 1017.8 1020.8 1022.6 1027.6 1030.6 1041.1 1041.1 DAY 17 18 10 12 16 24 20 30 20 22 27 2 MIN. QFF PRESSURE IN HPA 1011.7 1000.2 1000.3 1006.1 1003.9 1001.8 999.9 1001.1 1008.2 1007.4 1007.6 1009.3 999.9 DAY 28 26 26 3 28 18 24 15 17 29 10 24 PRESSURE AT HOUR 2100 UTC. MEAN QFE PRESSURE IN HPA 1025.0 1022.2 1019.1 1017.7 1017.3 1013.8 1012.4 1012.0 1016.2 1019.2 1024.6 1026.3 1018.8 MAX. QFE PRESSURE IN HPA 1034.7 1037.5 1034.9 1024.6 1028.1 1020.4 1018.9 1022.2 1024.5 1028.3 1032.1 1043.2 1043.2 DAY 10 18 9 10 16 24 1 30 20 22 27 2 MIN. QFE PRESSURE IN HPA 1012.7 1003.6 1001.0 1007.9 1005.4 1004.3 1002.1 1003.7 1010.8 1008.5 1008.0 1010.7 1001.0 DAY 28 26 26 3 31 18 24 16 17 29 11 20 MEAN QNH PRESSURE IN HPA 1022.6 1019.7 1016.7 1015.2 1014.8 1011.3 1009.9 1009.6 1013.7 1016.8 1022.2 1023.8 1016.3 MAX. QNH PRESSURE IN HPA 1032.2 1035.0 1032.4 1022.1 1025.6 1017.9 1016.4 1019.7 1022.0 1025.8 1029.6 1040.7 1040.7 DAY 10 18 9 10 16 24 1 30 20 22 27 2 MIN. QNH PRESSURE IN HPA 1010.2 1001.2 998.6 1005.4 1003.0 1001.9 999.7 1001.3 1008.3 1006.0 1005.5 1008.2 998.6 DAY 28 26 26 3 31 18 24 16 17 29 11 20 MEAN QFF PRESSURE IN HPA 1022.8 1019.9 1016.9 1015.5 1015.2 1011.7 1010.3 1010.0 1014.1 1017.1 1022.4 1024.0 1016.7 MAX. QFF PRESSURE IN HPA 1032.4 1035.2 1032.6 1022.4 1025.9 1018.3 1016.8 1020.1 1022.4 1026.1 1029.9 1040.9 1040.9 DAY 17 18 9 10 16 24 1 30 20 22 27 2 MIN. QFF PRESSURE IN HPA 1010.5 1001.5 998.9 1005.7 1003.3 1002.2 1000.1 1001.7 1008.7 1006.4 1005.9 1008.4 998.9 DAY 28 26 26 3 31 18 24 16 17 29 11 20 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ASTARA (40709) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 38 25 N LONGITUDE 48 52 E DATA PROCESSING CENTER ELEVATION -18.0 M MEANS AND EXTREMES FOR THE YEAR 2003 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AIR TEMPERATURE (C) 6.5 6.1 6.2 10.7 17.5 21.1 25.0 25.3 21.2 19.2 11.7 8.5 14.9 MINIMUN AIR TEMPERATURE (C) 3.3 3.8 3.8 7.7 13.2 17.2 21.3 20.9 18.1 15.9 8.6 4.7 11.5 DAYS WITH MINIMUM TEMP. >=21 0 0 0 0 0 1 19 19 1 0 0 0 40 DAYS WITH MINIMUM TEMP. <=-4 0 0 0 0 0 0 0 0 0 0 0 0 0 DAYS WITH FREEZING MIN.<= 0 3 1 2 0 0 0 0 0 0 0 0 4 10 TEMPERATURE RECORDS LOWEST(C) -1.0 -0.5 -0.8 2.2 7.0 12.0 17.0 16.8 15.0 12.5 3.5 -1.2 -1.2 DAY 18 18 2 1 3 6 31 2 30 28 17 12 MAXIMUM AIR TEMPERATURE (C) 10.5 8.8 8.5 13.8 21.3 24.8 28.9 29.9 24.9 22.9 14.9 12.3 18.4 DAYS WITH MAXIMUM TEMP. >=30 0 0 0 0 0 0 13 21 6 0 0 0 40 DAYS WITH MAXIMUM TEMP. <= 0 0 0 0 0 0 0 0 0 0 0 0 0 0 TEMPERATURE RECORDS HIGHEST(C) 25.6 22.0 11.4 26.6 24.8 28.5 33.6 33.5 33.5 27.0 21.6 26.0 33.6 DAY 7 1 20 6 18 18 7 3 2 25 1 18 DIF. BETWEEN (MAX.-MIN.) (C) 7.2 5.0 4.7 6.1 8.1 7.6 7.6 9.0 6.8 7.0 6.3 7.6 6.9 MEAN DAILY TEMP. (MDT) (C) 6.9 6.3 6.2 10.7 17.2 21.0 25.1 25.4 21.5 19.4 11.7 8.5 15.0 COOLING DEG. DAYS(BASE 21 0C) 0.0 0.0 0.0 0.0 0.0 21.3 126.9 135.9 38.9 1.8 0.0 0.3 325.1 HEATING DEG. DAYS(BASE 18 0C) 344.7 328.1 366.5 218.2 54.2 4.3 0.0 0.0 1.6 10.2 188.2 298.6 1814.7 DEWPOINT (MEAN C) 3.6 3.2 4.7 8.1 14.1 17.0 19.1 20.2 17.6 16.4 9.4 4.4 11.5 MIXING RATIO (G/KG) 4.91 4.75 5.27 6.76 10.21 12.25 14.08 15.07 12.74 11.74 7.40 5.22 9.20 VAPOUR PRESSURE (HPA) 8.01 7.74 8.59 10.96 16.43 19.58 22.38 23.96 20.41 18.84 12.04 8.53 14.79 SATURATION DEF. (HPA) 1.98 1.97 0.99 2.11 4.07 5.76 9.81 8.87 5.28 3.70 1.98 3.24 4.15 RELATIVE HUMIDITY (MEAN %) 84 84 90 85 82 79 72 75 82 85 87 80 82 RELATIVE HUMIDITY (MAX. %) 95 93 97 95 94 93 88 91 93 95 96 92 94 RELATIVE HUMIDITY (MIN. %) 68 72 80 73 67 62 55 58 65 70 72 62 67 RELATIVE HUMIDITY (MEAN% 03UTC) 90 86 94 90 88 88 80 83 86 92 92 85 88 RELATIVE HUMIDITY (MEAN% 09UTC) 72 78 85 77 72 68 59 63 69 73 76 71 72 RELATIVE HUMIDITY (MEAN% 15UTC) 87 85 90 85 80 72 66 71 84 88 89 80 81 RH=0 => RELATIVE HUMIDITY < 0.5% AMOUNT OF PRECIPITATION MM. 72.8 133.7 158.3 160.2 54.9 78.2 17.3 9.8 245.1 128.7 125.8 182.9 1367.7 DAYS WITH PRECIPITATION >=10 2 6 7 4 2 1 0 0 7 5 6 6 46 DAYS WITH PRECIPITATION >= 5 5 8 10 5 2 2 2 0 10 6 8 8 66 DAYS WITH PRECIPITATION >= 1 7 15 16 8 4 7 4 3 14 7 11 11 107 DAYS WITH PRECIPITATION 7 17 21 15 10 11 6 6 18 11 16 13 151 GREATEST DAILY PRECIPITATION 32.0 28.3 24.6 42.0 32.0 58.9 9.0 4.0 55.4 52.2 21.0 41.0 58.9 DAY 15 17 28 28 7 5 24 24 20 26 3 10 DAY WITH THUNDER STORM 0 0 1 3 5 5 4 5 0 1 1 0 25 DAYS WITH SNOW OR SLEET 1 3 1 0 0 0 0 0 0 0 0 0 5 DAYS WITH DUST 0 0 0 0 0 0 0 0 0 0 0 0 0 WIND DIRECTION (PREVAILING) 180 315 315 135 135 135 135 90 315 135 315 315 135 PREVAILING WIND SPEED(KNOTS) 7.1 5.6 6.4 8.4 7.6 8.3 6.6 5.2 7.2 7.0 6.9 6.9 7.5 PREVAILING WIND PERCENT 5.6 12.1 14.9 15.4 16.9 22.9 11.7 10.5 12.1 8.5 13.3 15.7 9.1 CALMS PERCENT OF WIND 76.6 71.9 60.9 59.2 64.1 58.3 69.4 71.4 62.5 70.6 65.0 59.7 65.8 NO. OF WIND OBSERVATION 248 224 248 240 248 240 248 248 240 248 240 248 2920 VECTOR WIND DIRECTION (MEAN) 209 333 360 127 136 137 103 106 333 83 336 304 103 VECTOR WIND MAGNITUDE(KNOTS) 0.2 0.8 0.4 1.0 1.4 2.4 0.9 1.2 0.4 0.4 1.1 1.1 0.3 WIND STEADINESES (MEAN %) 13.3 50.0 15.4 35.7 58.3 75.0 50.0 70.6 17.4 22.2 50.0 36.7 13.6 WIND SPEED (MEAN KNOTS) 1.5 1.6 2.6 2.8 2.4 3.2 1.8 1.7 2.3 1.8 2.2 3.0 2.2 FASTEST WIND DIRECTION 230 220 330 150 140 150 140 150 310 340 310 210 220 FASTEST WIND SPEED (KNOTS) 27 29 29 21 16 16 14 14 14 17 14 23 29 DAY 4 3 28 12 20 3 9 9 20 19 3 18 DAYS WITH SKY CLEAR (0-2)/8 6 4 3 1 14 15 11 17 6 7 6 9 99 DAYS WITH P.CLOUDY (3-6)/8 12 3 3 9 11 9 14 7 7 11 8 9 103 DAYS WITH CLOUDY (7-8)/8 13 21 25 20 6 6 6 7 17 13 16 13 163 DAYS WITH VISIBILITY =< 2 KM 8 6 5 9 2 0 0 0 0 1 3 3 37 DURATION OF SUNSHINE HOURS 110.4 47.0 59.1 92.0 258.8 263.5 240.2 255.3 113.1 140.0 100.9 102.7 1783.0 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ASTARA (40709) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 38 25 N LONGITUDE 48 52 E DATA PROCESSING CENTER ELEVATION -18.0 M MEANS AND EXTREMES FOR THE YEAR 2003 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL MEAN QFE PRESSURE IN HPA 1023.0 1021.0 1023.1 1021.1 1019.0 1015.0 1011.1 1013.9 1018.3 1017.7 1025.3 1025.5 1019.5 MAX. QFE PRESSURE IN HPA 1035.4 1035.2 1037.7 1034.6 1035.4 1028.5 1020.0 1019.3 1031.0 1028.3 1034.4 1047.4 1047.4 DAY-HOUR 19- 6 28-18 2- 6 30-21 1- 6 5-21 3- 9 16- 6 22- 6 15- 9 15- 9 11- 6 MIN. QFE PRESSURE IN HPA 1009.3 1006.8 1004.8 1003.9 1006.0 1005.3 1003.1 1007.2 1004.2 1005.6 1011.7 1007.3 1003.1 DAY-HOUR 4-18 20- 9 19-12 6-12 30-12 18- 0 7-12 12-15 6-15 25-12 21- 3 18-12 MEAN QNH PRESSURE IN HPA 1020.5 1018.5 1020.6 1018.6 1016.5 1012.5 1008.7 1011.5 1015.9 1015.2 1022.8 1023.0 1017.0 MAX. QNH PRESSURE IN HPA 1032.9 1032.7 1035.2 1032.1 1032.9 1026.0 1017.5 1016.8 1028.5 1025.8 1031.9 1044.9 1044.9 DAY-HOUR 19- 6 28-18 2- 6 30-21 1- 6 5-21 3- 9 16- 6 22- 6 15- 9 15- 9 11- 6 MIN. QNH PRESSURE IN HPA 1006.8 1004.4 1002.4 1001.5 1003.6 1002.9 1000.7 1004.7 1001.8 1003.2 1009.2 1004.8 1000.7 DAY-HOUR 4-18 20- 9 19-12 6-12 30-12 18- 0 7-12 12-15 6-15 25-12 21- 3 18-12 MEAN QFF PRESSURE IN HPA 1020.8 1018.7 1020.8 1018.9 1016.8 1012.9 1009.1 1011.8 1016.2 1015.6 1023.1 1023.2 1017.3 MAX. QFF PRESSURE IN HPA 1033.1 1032.9 1035.4 1032.4 1033.2 1026.3 1017.9 1017.2 1028.8 1026.2 1032.2 1045.1 1045.1 DAY-HOUR 19- 6 28-18 2- 6 30-21 1- 6 5-21 3- 9 16- 6 22- 6 15- 9 15- 9 11- 6 MIN. QFF PRESSURE IN HPA 1007.1 1004.6 1002.6 1001.7 1003.9 1003.2 1001.1 1005.2 1002.2 1003.5 1009.5 1005.2 1001.1 DAY-HOUR 4-18 20-12 19-12 6-12 30-12 18- 0 7-12 12-15 6-15 25-12 21- 3 18-12 PRESSURE AT HOUR 0000 UTC. MEAN QFE PRESSURE IN HPA 1023.0 1020.4 1022.6 1020.5 1018.8 1014.9 1011.1 1013.7 1018.1 1017.8 1024.6 1025.5 1019.3 MAX. QFE PRESSURE IN HPA 1034.3 1031.6 1036.0 1033.2 1033.6 1027.5 1017.8 1018.2 1028.7 1026.9 1032.6 1043.3 1043.3 DAY 19 28 2 29 1 6 4 16 23 20 7 11 MIN. QFE PRESSURE IN HPA 1009.9 1008.2 1010.3 1005.5 1008.3 1005.3 1004.0 1008.5 1009.3 1008.3 1012.3 1009.4 1004.0 DAY 5 19 20 26 31 18 8 12 6 29 21 18 MEAN QNH PRESSURE IN HPA 1020.5 1018.0 1020.1 1018.0 1016.3 1012.4 1008.7 1011.3 1015.7 1015.3 1022.1 1023.0 1016.8 MAX. QNH PRESSURE IN HPA 1031.8 1029.1 1033.5 1030.7 1031.1 1025.0 1015.3 1015.7 1026.2 1024.4 1030.1 1040.8 1040.8 DAY 19 28 2 29 1 6 4 16 23 20 7 11 MIN. QNH PRESSURE IN HPA 1007.4 1005.7 1007.8 1003.1 1005.8 1002.9 1001.6 1006.0 1006.8 1005.8 1009.8 1006.9 1001.6 DAY 5 19 20 26 31 18 8 12 6 29 21 18 MEAN QFF PRESSURE IN HPA 1020.7 1018.2 1020.3 1018.3 1016.6 1012.8 1009.1 1011.7 1016.0 1015.6 1022.4 1023.3 1017.1 MAX. QFF PRESSURE IN HPA 1032.0 1029.3 1033.7 1030.9 1031.4 1025.3 1015.7 1016.1 1026.5 1024.8 1030.4 1041.0 1041.0 DAY 19 28 2 29 1 6 4 16 23 20 7 11 MIN. QFF PRESSURE IN HPA 1007.8 1006.0 1008.1 1003.4 1006.2 1003.2 1002.0 1006.5 1007.2 1006.2 1010.1 1007.3 1002.0 DAY 5 19 20 26 31 18 8 12 6 29 21 18 PRESSURE AT HOUR 0300 UTC. MEAN QFE PRESSURE IN HPA 1023.3 1020.7 1023.0 1020.9 1019.3 1015.2 1011.6 1014.4 1018.7 1017.9 1025.0 1025.3 1019.6 MAX. QFE PRESSURE IN HPA 1034.6 1032.6 1036.0 1033.1 1033.8 1027.3 1017.8 1019.2 1029.2 1027.5 1033.0 1045.3 1045.3 DAY 19 12 2 29 1 6 3 16 23 20 7 11 MIN. QFE PRESSURE IN HPA 1010.5 1008.1 1010.6 1005.1 1008.6 1005.4 1003.9 1009.1 1009.7 1008.3 1011.7 1009.4 1003.9 DAY 5 19 20 26 30 18 7 12 18 29 21 18 MEAN QNH PRESSURE IN HPA 1020.8 1018.3 1020.5 1018.4 1016.8 1012.8 1009.1 1012.0 1016.2 1015.4 1022.5 1022.9 1017.1 MAX. QNH PRESSURE IN HPA 1032.1 1030.1 1033.5 1030.6 1031.3 1024.8 1015.3 1016.7 1026.7 1025.0 1030.5 1042.8 1042.8 DAY 19 12 2 29 1 6 3 16 23 20 7 11 MIN. QNH PRESSURE IN HPA 1008.0 1005.6 1008.1 1002.7 1006.1 1003.0 1001.5 1006.6 1007.2 1005.8 1009.2 1006.9 1001.5 DAY 5 19 20 26 30 18 7 12 18 29 21 18 MEAN QFF PRESSURE IN HPA 1021.0 1018.5 1020.7 1018.7 1017.2 1013.1 1009.5 1012.4 1016.6 1015.8 1022.8 1023.1 1017.4 MAX. QFF PRESSURE IN HPA 1032.3 1030.3 1033.7 1030.8 1031.6 1025.1 1015.7 1017.1 1027.0 1025.3 1030.8 1043.0 1043.0 DAY 19 12 2 29 1 6 3 16 23 20 7 11 MIN. QFF PRESSURE IN HPA 1008.3 1005.9 1008.4 1003.0 1006.5 1003.3 1001.8 1007.0 1007.6 1006.2 1009.5 1007.3 1001.8 DAY 5 19 20 26 30 18 7 12 18 29 21 18 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ASTARA (40709) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 38 25 N LONGITUDE 48 52 E DATA PROCESSING CENTER ELEVATION -18.0 M MEANS AND EXTREMES FOR THE YEAR 2003 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 0600 UTC. MEAN QFE PRESSURE IN HPA 1024.2 1021.6 1023.9 1021.8 1019.9 1015.5 1011.9 1014.8 1019.2 1018.6 1026.2 1026.4 1020.3 MAX. QFE PRESSURE IN HPA 1035.4 1034.6 1037.7 1032.9 1035.4 1027.2 1018.7 1019.3 1031.0 1028.1 1034.1 1047.4 1047.4 DAY 19 12 2 29 1 6 3 16 22 15 15 11 MIN. QFE PRESSURE IN HPA 1013.5 1008.4 1009.7 1006.2 1008.1 1007.8 1003.8 1009.1 1008.9 1010.2 1012.9 1009.5 1003.8 DAY 5 20 19 6 30 18 7 12 6 27 21 18 MEAN QNH PRESSURE IN HPA 1021.7 1019.1 1021.4 1019.3 1017.4 1013.0 1009.4 1012.3 1016.7 1016.1 1023.7 1023.9 1017.8 MAX. QNH PRESSURE IN HPA 1032.9 1032.1 1035.2 1030.4 1032.9 1024.7 1016.2 1016.8 1028.5 1025.6 1031.6 1044.9 1044.9 DAY 19 12 2 29 1 6 3 16 22 15 15 11 MIN. QNH PRESSURE IN HPA 1011.0 1005.9 1007.2 1003.8 1005.6 1005.3 1001.4 1006.6 1006.4 1007.7 1010.4 1007.0 1001.4 DAY 5 20 19 6 30 18 7 12 6 27 21 18 MEAN QFF PRESSURE IN HPA 1022.0 1019.3 1021.6 1019.6 1017.8 1013.4 1009.8 1012.7 1017.1 1016.5 1024.0 1024.2 1018.2 MAX. QFF PRESSURE IN HPA 1033.1 1032.3 1035.4 1030.6 1033.2 1025.0 1016.6 1017.2 1028.8 1026.0 1031.8 1045.1 1045.1 DAY 19 12 2 29 1 6 3 16 22 15 15 11 MIN. QFF PRESSURE IN HPA 1011.3 1006.2 1007.5 1004.0 1006.0 1005.7 1001.8 1007.1 1006.9 1008.1 1010.7 1007.4 1001.8 DAY 5 20 19 6 30 18 7 12 6 27 21 18 PRESSURE AT HOUR 0900 UTC. MEAN QFE PRESSURE IN HPA 1023.1 1021.0 1023.4 1021.3 1019.5 1015.2 1011.3 1014.2 1018.5 1017.6 1025.6 1025.3 1019.7 MAX. QFE PRESSURE IN HPA 1033.6 1035.1 1036.0 1033.2 1034.4 1025.9 1020.0 1018.3 1030.8 1028.3 1034.4 1046.8 1046.8 DAY 19 28 1 28 1 6 3 16 22 15 15 11 MIN. QFE PRESSURE IN HPA 1012.3 1006.8 1008.2 1004.0 1007.5 1008.2 1004.0 1008.9 1006.9 1009.1 1014.1 1008.6 1004.0 DAY 4 20 19 6 30 22 7 12 6 28 9 18 MEAN QNH PRESSURE IN HPA 1020.6 1018.6 1020.9 1018.9 1017.0 1012.8 1008.9 1011.8 1016.0 1015.1 1023.1 1022.9 1017.2 MAX. QNH PRESSURE IN HPA 1031.1 1032.6 1033.5 1030.7 1031.9 1023.4 1017.5 1015.8 1028.3 1025.8 1031.9 1044.3 1044.3 DAY 19 28 1 28 1 6 3 16 22 15 15 11 MIN. QNH PRESSURE IN HPA 1009.8 1004.4 1005.7 1001.6 1005.0 1005.7 1001.6 1006.4 1004.4 1006.6 1011.6 1006.1 1001.6 DAY 4 20 19 6 30 22 7 12 6 28 9 18 MEAN QFF PRESSURE IN HPA 1020.9 1018.8 1021.1 1019.1 1017.3 1013.1 1009.3 1012.2 1016.4 1015.5 1023.4 1023.1 1017.5 MAX. QFF PRESSURE IN HPA 1031.3 1032.8 1033.7 1030.9 1032.2 1023.7 1017.9 1016.2 1028.6 1026.2 1032.2 1044.5 1044.5 DAY 19 28 1 28 1 6 3 16 22 15 15 11 MIN. QFF PRESSURE IN HPA 1010.1 1004.6 1006.0 1001.8 1005.4 1006.1 1002.0 1006.9 1004.9 1007.0 1011.9 1006.5 1001.8 DAY 4 20 19 6 30 22 7 12 6 28 9 18 PRESSURE AT HOUR 1200 UTC. MEAN QFE PRESSURE IN HPA 1022.1 1020.4 1022.5 1020.6 1018.5 1014.5 1010.4 1013.3 1017.6 1016.7 1024.9 1024.6 1018.8 MAX. QFE PRESSURE IN HPA 1032.6 1034.2 1036.0 1033.2 1033.0 1024.5 1019.2 1016.9 1030.1 1026.5 1033.8 1046.0 1046.0 DAY 19 28 1 28 1 6 3 16 22 15 22 11 MIN. QFE PRESSURE IN HPA 1010.1 1006.8 1004.8 1003.9 1006.0 1007.4 1003.1 1007.9 1005.2 1005.6 1013.5 1007.3 1003.1 DAY 4 20 19 6 30 17 7 12 6 25 9 18 MEAN QNH PRESSURE IN HPA 1019.6 1017.9 1020.0 1018.1 1016.1 1012.0 1008.0 1010.8 1015.1 1014.2 1022.4 1022.2 1016.4 MAX. QNH PRESSURE IN HPA 1030.1 1031.7 1033.5 1030.7 1030.5 1022.0 1016.7 1014.4 1027.6 1024.0 1031.3 1043.5 1043.5 DAY 19 28 1 28 1 6 3 16 22 15 22 11 MIN. QNH PRESSURE IN HPA 1007.6 1004.4 1002.4 1001.5 1003.6 1004.9 1000.7 1005.4 1002.8 1003.2 1011.0 1004.8 1000.7 DAY 4 20 19 6 30 17 7 12 6 25 9 18 MEAN QFF PRESSURE IN HPA 1019.9 1018.1 1020.3 1018.4 1016.4 1012.4 1008.4 1011.2 1015.5 1014.6 1022.7 1022.4 1016.7 MAX. QFF PRESSURE IN HPA 1030.3 1031.9 1033.7 1030.9 1030.8 1022.3 1017.1 1014.8 1027.9 1024.4 1031.6 1043.7 1043.7 DAY 19 28 1 28 1 6 3 16 22 15 22 11 MIN. QFF PRESSURE IN HPA 1007.9 1004.6 1002.6 1001.7 1003.9 1005.3 1001.1 1005.9 1003.2 1003.5 1011.3 1005.2 1001.1 DAY 4 20 19 6 30 22 7 12 6 25 9 18 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ASTARA (40709) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 38 25 N LONGITUDE 48 52 E DATA PROCESSING CENTER ELEVATION -18.0 M MEANS AND EXTREMES FOR THE YEAR 2003 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 1500 UTC. MEAN QFE PRESSURE IN HPA 1022.9 1021.0 1023.0 1020.7 1018.4 1014.4 1010.3 1013.1 1017.6 1017.2 1025.4 1025.4 1019.1 MAX. QFE PRESSURE IN HPA 1032.6 1034.8 1036.1 1033.4 1032.3 1025.9 1019.0 1016.9 1030.1 1025.8 1033.4 1046.1 1046.1 DAY 18 28 1 30 1 5 3 3 22 15 15 11 MIN. QFE PRESSURE IN HPA 1009.7 1007.9 1006.7 1004.9 1006.1 1006.3 1003.4 1007.2 1004.2 1006.4 1013.9 1007.8 1003.4 DAY 4 20 19 6 30 17 7 12 6 25 9 18 MEAN QNH PRESSURE IN HPA 1020.4 1018.5 1020.5 1018.2 1015.9 1011.9 1007.9 1010.6 1015.2 1014.8 1022.9 1023.0 1016.6 MAX. QNH PRESSURE IN HPA 1030.1 1032.3 1033.6 1030.9 1029.8 1023.4 1016.5 1014.4 1027.6 1023.3 1030.9 1043.6 1043.6 DAY 18 28 1 30 1 5 3 3 22 15 15 11 MIN. QNH PRESSURE IN HPA 1007.2 1005.4 1004.3 1002.5 1003.7 1003.9 1001.0 1004.7 1001.8 1004.0 1011.4 1005.3 1001.0 DAY 4 20 19 6 30 17 7 12 6 25 9 18 MEAN QFF PRESSURE IN HPA 1020.6 1018.8 1020.7 1018.5 1016.2 1012.3 1008.2 1011.0 1015.5 1015.1 1023.2 1023.2 1016.9 MAX. QFF PRESSURE IN HPA 1030.3 1032.5 1033.8 1031.2 1030.1 1023.7 1016.9 1014.8 1027.9 1023.7 1031.1 1043.8 1043.8 DAY 18 28 1 30 1 5 3 3 22 15 15 11 MIN. QFF PRESSURE IN HPA 1007.5 1005.7 1004.5 1002.7 1004.0 1004.2 1001.4 1005.2 1002.2 1004.3 1011.7 1005.7 1001.4 DAY 4 20 19 6 30 17 7 12 6 25 9 18 PRESSURE AT HOUR 1800 UTC. MEAN QFE PRESSURE IN HPA 1023.0 1021.6 1023.6 1021.5 1018.9 1015.2 1011.3 1014.0 1018.5 1017.9 1025.4 1025.7 1019.7 MAX. QFE PRESSURE IN HPA 1033.7 1035.2 1036.8 1034.5 1032.1 1027.7 1019.4 1018.2 1030.8 1025.5 1032.8 1045.0 1045.0 DAY 18 28 1 30 1 5 3 15 22 15 22 11 MIN. QFE PRESSURE IN HPA 1009.3 1009.5 1009.1 1007.3 1006.8 1005.5 1004.3 1008.9 1005.5 1007.3 1014.1 1007.5 1004.3 DAY 4 3 19 6 30 17 7 11 6 28 9 18 MEAN QNH PRESSURE IN HPA 1020.5 1019.1 1021.1 1019.1 1016.5 1012.7 1008.8 1011.6 1016.1 1015.5 1022.9 1023.2 1017.3 MAX. QNH PRESSURE IN HPA 1031.2 1032.7 1034.3 1032.0 1029.6 1025.2 1016.9 1015.7 1028.3 1023.0 1030.3 1042.5 1042.5 DAY 18 28 1 30 1 5 3 15 22 15 22 11 MIN. QNH PRESSURE IN HPA 1006.8 1007.0 1006.6 1004.8 1004.4 1003.1 1001.9 1006.4 1003.1 1004.8 1011.6 1005.0 1001.9 DAY 4 3 19 6 30 17 7 11 6 28 9 18 MEAN QFF PRESSURE IN HPA 1020.8 1019.4 1021.3 1019.3 1016.8 1013.1 1009.2 1012.0 1016.4 1015.8 1023.2 1023.4 1017.6 MAX. QFF PRESSURE IN HPA 1031.4 1032.9 1034.5 1032.3 1029.9 1025.5 1017.3 1016.1 1028.6 1023.4 1030.6 1042.7 1042.7 DAY 18 28 1 30 1 5 3 15 22 15 22 11 MIN. QFF PRESSURE IN HPA 1007.1 1007.3 1006.9 1005.1 1004.7 1003.4 1002.3 1006.9 1003.5 1005.2 1011.9 1005.4 1002.3 DAY 4 3 19 6 30 17 7 11 6 28 9 18 PRESSURE AT HOUR 2100 UTC. MEAN QFE PRESSURE IN HPA 1022.8 1021.3 1023.0 1021.4 1018.6 1015.0 1011.3 1014.0 1018.5 1018.0 1025.1 1025.4 1019.5 MAX. QFE PRESSURE IN HPA 1034.3 1034.2 1036.0 1034.6 1030.8 1028.5 1019.5 1018.5 1029.9 1025.1 1032.4 1042.9 1042.9 DAY 18 28 1 30 1 5 3 15 22 19 6 11 MIN. QFE PRESSURE IN HPA 1009.3 1009.0 1009.9 1005.9 1006.8 1006.0 1003.8 1008.6 1008.1 1008.3 1013.4 1008.4 1003.8 DAY 4 3 19 25 30 17 7 11 6 28 9 18 MEAN QNH PRESSURE IN HPA 1020.3 1018.8 1020.5 1019.0 1016.2 1012.6 1008.8 1011.5 1016.0 1015.5 1022.6 1023.0 1017.1 MAX. QNH PRESSURE IN HPA 1031.8 1031.7 1033.5 1032.1 1028.3 1026.0 1017.0 1016.0 1027.4 1022.6 1029.9 1040.4 1040.4 DAY 18 28 1 30 1 5 3 15 22 19 6 11 MIN. QNH PRESSURE IN HPA 1006.8 1006.5 1007.4 1003.5 1004.4 1003.6 1001.4 1006.1 1005.6 1005.8 1010.9 1005.9 1001.4 DAY 4 3 19 25 30 17 7 11 6 28 9 18 MEAN QFF PRESSURE IN HPA 1020.5 1019.0 1020.8 1019.2 1016.5 1012.9 1009.2 1011.9 1016.4 1015.9 1022.9 1023.2 1017.4 MAX. QFF PRESSURE IN HPA 1032.0 1031.9 1033.7 1032.4 1028.6 1026.3 1017.4 1016.4 1027.7 1023.0 1030.2 1040.6 1040.6 DAY 18 28 1 30 1 5 3 15 22 19 6 11 MIN. QFF PRESSURE IN HPA 1007.2 1006.9 1007.7 1003.8 1004.7 1003.9 1001.8 1006.6 1006.0 1006.2 1011.2 1006.3 1001.8 DAY 4 3 19 25 30 17 7 11 6 28 9 18 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ASTARA (40709) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 38 25 N LONGITUDE 48 52 E DATA PROCESSING CENTER ELEVATION -18.0 M MEANS AND EXTREMES FOR THE YEAR 2004 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AIR TEMPERATURE (C) 8.0 8.9 9.6 11.4 17.6 22.5 24.0 26.1 21.6 16.6 12.9 6.0 15.4 MINIMUN AIR TEMPERATURE (C) 4.9 5.0 5.9 8.0 14.5 18.5 20.5 21.6 18.0 13.2 9.9 2.5 11.9 DAYS WITH MINIMUM TEMP. >=21 0 0 0 0 0 6 16 20 4 0 0 0 46 DAYS WITH MINIMUM TEMP. <=-4 0 0 0 0 0 0 0 0 0 0 0 0 0 DAYS WITH FREEZING MIN.<= 0 0 2 1 0 0 0 0 0 0 0 0 5 8 TEMPERATURE RECORDS LOWEST(C) 1.2 -3.0 -1.0 0.6 12.0 15.0 16.8 18.8 14.2 8.6 3.8 -1.6 -3.0 DAY 21 18 17 6 18 14 11 8 30 15 28 18 MAXIMUM AIR TEMPERATURE (C) 11.8 12.9 13.1 14.9 21.2 26.4 27.7 30.5 25.5 20.5 16.5 10.1 19.3 DAYS WITH MAXIMUM TEMP. >=30 0 0 0 0 0 5 6 24 3 0 0 0 38 DAYS WITH MAXIMUM TEMP. <= 0 0 0 0 0 0 0 0 0 0 0 0 0 0 TEMPERATURE RECORDS HIGHEST(C) 22.5 23.5 24.4 24.6 27.4 32.0 31.4 32.8 31.4 26.2 26.6 16.0 32.8 DAY 24 14 23 14 30 28 17 23 1 1 22 5 DIF. BETWEEN (MAX.-MIN.) (C) 6.9 7.9 7.2 6.9 6.7 7.9 7.2 8.9 7.5 7.3 6.6 7.6 7.4 MEAN DAILY TEMP. (MDT) (C) 8.3 9.0 9.5 11.5 17.9 22.5 24.1 26.1 21.8 16.8 13.2 6.3 15.6 COOLING DEG. DAYS(BASE 21 0C) 0.0 0.0 0.0 0.0 2.0 57.5 97.9 157.5 41.1 1.1 0.0 0.0 357.2 HEATING DEG. DAYS(BASE 18 0C) 300.1 261.9 262.7 195.9 29.0 1.1 0.0 0.0 1.8 55.9 144.4 362.4 1615.2 DEWPOINT (MEAN C) 4.7 5.2 7.2 9.4 14.9 17.8 19.9 20.9 18.0 14.2 10.4 3.0 12.1 MIXING RATIO (G/KG) 5.33 5.59 6.37 7.51 10.66 12.85 14.67 15.77 13.07 10.14 8.00 4.71 9.56 VAPOUR PRESSURE (HPA) 8.64 9.08 10.37 12.14 17.10 20.51 23.35 24.99 20.95 16.39 12.95 7.70 15.35 SATURATION DEF. (HPA) 2.33 2.58 2.07 1.76 3.33 7.34 6.95 9.21 5.33 2.97 2.32 1.85 4.00 RELATIVE HUMIDITY (MEAN %) 82 81 86 88 86 76 79 75 82 87 86 82 83 RELATIVE HUMIDITY (MAX. %) 94 94 96 97 96 91 92 91 94 97 95 95 94 RELATIVE HUMIDITY (MIN. %) 67 65 73 77 72 60 64 57 66 72 71 65 67 RELATIVE HUMIDITY (MEAN% 03UTC) 87 86 92 93 91 83 86 83 90 94 89 88 89 RELATIVE HUMIDITY (MEAN% 09UTC) 71 73 78 81 77 66 69 61 69 74 77 68 72 RELATIVE HUMIDITY (MEAN% 15UTC) 85 80 83 88 84 71 72 71 83 90 88 86 82 RH=0 => RELATIVE HUMIDITY < 0.5% AMOUNT OF PRECIPITATION MM. 44.4 49.6 192.2 164.3 152.6 108.4 68.0 60.2 156.4 253.3 358.6 124.1 1732.1 DAYS WITH PRECIPITATION >=10 2 2 6 4 4 4 2 2 3 5 7 5 46 DAYS WITH PRECIPITATION >= 5 4 4 7 7 6 6 4 2 4 8 7 5 64 DAYS WITH PRECIPITATION >= 1 5 6 9 11 11 6 7 3 6 9 8 7 88 DAYS WITH PRECIPITATION 9 8 14 12 16 11 11 5 9 10 11 8 124 GREATEST DAILY PRECIPITATION 18.2 18.0 48.0 50.0 66.4 26.0 26.0 30.0 76.0 102.3 147.0 37.0 147.0 DAY 13 2 13 16 14 12 10 5 12 13 4 5 DAY WITH THUNDER STORM 0 1 0 0 5 3 10 0 1 0 1 0 21 DAYS WITH SNOW OR SLEET 0 1 0 1 0 0 0 0 0 0 0 2 4 DAYS WITH DUST 0 0 0 0 0 0 0 0 0 0 0 0 0 WIND DIRECTION (PREVAILING) 360 315 315 135 135 135 135 135 135 315 315 360 135 PREVAILING WIND SPEED(KNOTS) 5.8 8.7 7.1 9.3 7.2 8.8 9.2 8.6 9.4 7.2 10.7 6.6 8.6 PREVAILING WIND PERCENT 14.1 6.5 8.1 17.5 11.7 15.0 16.5 9.3 7.9 6.0 7.1 7.3 8.6 CALMS PERCENT OF WIND 59.7 68.1 70.2 62.1 59.7 60.4 65.7 75.0 67.9 78.2 79.2 73.8 68.3 NO. OF WIND OBSERVATION 248 232 248 240 248 240 248 248 240 248 240 248 2928 VECTOR WIND DIRECTION (MEAN) 2 256 347 135 103 123 133 96 76 334 302 328 113 VECTOR WIND MAGNITUDE(KNOTS) 0.4 1.0 0.3 1.5 1.3 1.7 1.9 1.0 0.3 0.3 0.5 0.8 0.4 WIND STEADINESES (MEAN %) 14.8 30.3 12.5 48.4 43.3 53.1 70.4 50.0 12.5 21.4 25.0 44.4 16.0 WIND SPEED (MEAN KNOTS) 2.7 3.3 2.4 3.1 3.0 3.2 2.7 2.0 2.4 1.4 2.0 1.8 2.5 FASTEST WIND DIRECTION 240 240 150 330 220 150 150 140 150 330 240 310 240 FASTEST WIND SPEED (KNOTS) 19 68 23 21 19 17 17 16 17 16 39 23 68 DAY 17 15 2 30 11 1 1 2 5 5 22 16 DAYS WITH SKY CLEAR (0-2)/8 6 7 5 7 5 17 7 17 13 13 8 10 115 DAYS WITH P.CLOUDY (3-6)/8 13 10 8 11 12 6 15 11 7 5 6 11 115 DAYS WITH CLOUDY (7-8)/8 12 12 18 12 14 7 9 3 10 13 16 10 136 DAYS WITH VISIBILITY =< 2 KM 2 4 10 8 7 3 1 0 2 0 0 0 37 DURATION OF SUNSHINE HOURS 117.3 123.1 118.9 159.4 172.5 271.6 228.1 292.6 166.6 146.1 98.8 134.7 2029.7 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ASTARA (40709) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 38 25 N LONGITUDE 48 52 E DATA PROCESSING CENTER ELEVATION -18.0 M MEANS AND EXTREMES FOR THE YEAR 2004 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL MEAN QFE PRESSURE IN HPA 1018.3 1019.8 1024.4 1019.3 1015.0 1014.3 1013.9 1011.5 1019.4 1023.3 1021.0 1025.5 1018.8 MAX. QFE PRESSURE IN HPA 1030.8 1026.5 1044.5 1032.6 1024.8 1026.9 1021.0 1017.3 1027.9 1036.6 1031.6 1036.1 1044.5 DAY-HOUR 11- 0 4-18 8- 6 5- 6 22- 6 13- 6 6-18 6- 6 14- 6 14- 6 5- 6 2-21 MIN. QFE PRESSURE IN HPA 1000.8 1001.3 1003.1 1004.8 997.0 1005.8 1009.3 1001.0 1005.4 1007.5 1004.3 1016.6 997.0 DAY-HOUR 23-12 15- 3 5-15 15- 9 11-15 9-15 14-15 12- 0 10-12 21-12 17-21 14-12 MEAN QNH PRESSURE IN HPA 1015.8 1017.4 1021.9 1016.9 1012.5 1011.8 1011.4 1009.0 1016.9 1020.9 1018.5 1023.0 1016.3 MAX. QNH PRESSURE IN HPA 1028.3 1024.0 1042.0 1030.1 1022.3 1024.4 1018.5 1014.8 1025.4 1034.1 1029.1 1033.6 1042.0 DAY-HOUR 11- 0 4-18 8- 6 5- 6 22- 6 13- 6 6-18 6- 6 14- 6 14- 6 5- 6 2-21 MIN. QNH PRESSURE IN HPA 998.4 998.9 1000.7 1002.4 994.6 1003.4 1006.8 998.6 1003.0 1005.0 1001.9 1014.1 994.6 DAY-HOUR 23-12 15- 3 5-15 15- 9 11-15 9-15 14-15 12- 0 10-12 21-12 17-21 14-12 MEAN QFF PRESSURE IN HPA 1016.1 1017.6 1022.2 1017.1 1012.9 1012.2 1011.8 1009.4 1017.2 1021.2 1018.8 1023.2 1016.6 MAX. QFF PRESSURE IN HPA 1028.6 1024.3 1042.2 1030.3 1022.6 1024.7 1018.9 1015.2 1025.7 1034.4 1029.4 1033.8 1042.2 DAY-HOUR 11- 0 4-18 8- 6 5- 6 22- 6 13- 6 6-18 6- 6 14- 6 14- 6 5- 6 2-21 MIN. QFF PRESSURE IN HPA 998.6 999.2 1001.0 1002.7 994.9 1003.7 1007.2 999.0 1003.3 1005.4 1002.2 1014.4 994.9 DAY-HOUR 23-12 15- 3 5-15 15- 9 11-15 9-15 23-12 12- 0 10-12 21-12 17-21 14-12 PRESSURE AT HOUR 0000 UTC. MEAN QFE PRESSURE IN HPA 1018.2 1019.6 1023.9 1019.1 1014.7 1014.2 1013.7 1011.2 1018.9 1022.9 1020.9 1025.3 1018.5 MAX. QFE PRESSURE IN HPA 1030.8 1025.3 1041.8 1030.1 1022.6 1025.6 1020.1 1016.0 1026.7 1035.3 1029.8 1035.7 1041.8 DAY 11 5 9 5 22 13 7 7 14 14 5 3 MIN. QFE PRESSURE IN HPA 1003.2 1002.4 1007.7 1006.4 1002.9 1008.3 1009.5 1001.0 1009.4 1012.8 1004.8 1017.1 1001.0 DAY 24 15 6 24 12 24 13 12 10 21 18 24 MEAN QNH PRESSURE IN HPA 1015.8 1017.1 1021.4 1016.6 1012.2 1011.7 1011.2 1008.7 1016.4 1020.4 1018.4 1022.8 1016.1 MAX. QNH PRESSURE IN HPA 1028.3 1022.8 1039.3 1027.6 1020.1 1023.1 1017.6 1013.5 1024.2 1032.8 1027.3 1033.2 1039.3 DAY 11 5 9 5 22 13 7 7 14 14 5 3 MIN. QNH PRESSURE IN HPA 1000.8 1000.0 1005.2 1004.0 1000.5 1005.8 1007.0 998.6 1006.9 1010.3 1002.4 1014.6 998.6 DAY 24 15 6 24 12 24 13 12 10 21 18 24 MEAN QFF PRESSURE IN HPA 1016.0 1017.4 1021.6 1016.9 1012.5 1012.1 1011.6 1009.1 1016.8 1020.7 1018.7 1023.1 1016.4 MAX. QFF PRESSURE IN HPA 1028.6 1023.1 1039.5 1027.8 1020.4 1023.4 1018.0 1013.9 1024.5 1033.1 1027.6 1033.4 1039.5 DAY 11 5 9 5 22 13 7 7 14 14 5 3 MIN. QFF PRESSURE IN HPA 1001.1 1000.3 1005.6 1004.3 1000.8 1006.2 1007.4 999.0 1007.3 1010.7 1002.7 1014.9 999.0 DAY 24 15 6 24 12 24 13 12 10 21 18 24 PRESSURE AT HOUR 0300 UTC. MEAN QFE PRESSURE IN HPA 1018.1 1019.8 1024.4 1019.6 1015.2 1014.9 1014.4 1011.9 1019.6 1023.4 1021.1 1025.5 1019.0 MAX. QFE PRESSURE IN HPA 1030.2 1025.3 1042.1 1030.5 1023.8 1026.2 1020.5 1016.5 1027.1 1036.3 1030.4 1035.9 1042.1 DAY 11 22 8 5 22 13 7 17 14 14 5 3 MIN. QFE PRESSURE IN HPA 1002.9 1001.3 1008.8 1007.1 1004.8 1008.6 1010.0 1001.9 1008.6 1011.7 1006.9 1017.4 1001.3 DAY 23 15 30 24 12 17 13 12 10 21 18 20 MEAN QNH PRESSURE IN HPA 1015.6 1017.3 1021.9 1017.1 1012.7 1012.4 1011.9 1009.5 1017.2 1020.9 1018.6 1023.0 1016.5 MAX. QNH PRESSURE IN HPA 1027.7 1022.8 1039.6 1028.0 1021.3 1023.7 1018.0 1014.0 1024.6 1033.8 1027.9 1033.4 1039.6 DAY 11 22 8 5 22 13 7 17 14 14 5 3 MIN. QNH PRESSURE IN HPA 1000.5 998.9 1006.3 1004.6 1002.4 1006.1 1007.5 999.5 1006.1 1009.2 1004.4 1014.9 998.9 DAY 23 15 30 24 12 17 13 12 10 21 18 20 MEAN QFF PRESSURE IN HPA 1015.9 1017.6 1022.2 1017.4 1013.0 1012.8 1012.3 1009.9 1017.5 1021.2 1018.9 1023.2 1016.8 MAX. QFF PRESSURE IN HPA 1027.9 1023.1 1039.8 1028.2 1021.6 1024.0 1018.4 1014.4 1024.9 1034.1 1028.2 1033.6 1039.8 DAY 11 22 8 5 22 13 7 17 14 14 5 3 MIN. QFF PRESSURE IN HPA 1000.7 999.2 1006.7 1005.0 1002.7 1006.5 1007.9 999.9 1006.5 1009.6 1004.8 1015.1 999.2 DAY 23 15 30 24 12 17 13 12 10 21 18 20 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ASTARA (40709) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 38 25 N LONGITUDE 48 52 E DATA PROCESSING CENTER ELEVATION -18.0 M MEANS AND EXTREMES FOR THE YEAR 2004 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 0600 UTC. MEAN QFE PRESSURE IN HPA 1019.0 1020.9 1025.4 1020.2 1015.5 1015.2 1014.7 1012.6 1020.5 1024.3 1022.0 1026.4 1019.7 MAX. QFE PRESSURE IN HPA 1029.9 1025.9 1044.5 1032.6 1024.8 1026.9 1020.5 1017.3 1027.9 1036.6 1031.6 1035.3 1044.5 DAY 11 4 8 5 22 13 7 6 14 14 5 3 MIN. QFE PRESSURE IN HPA 1002.9 1004.0 1008.8 1006.8 1004.2 1008.9 1010.3 1002.9 1008.4 1010.8 1009.0 1018.2 1002.9 DAY 23 15 30 15 11 17 15 12 10 21 23 20 MEAN QNH PRESSURE IN HPA 1016.6 1018.4 1022.9 1017.7 1013.1 1012.8 1012.2 1010.1 1018.0 1021.8 1019.5 1023.9 1017.3 MAX. QNH PRESSURE IN HPA 1027.4 1023.4 1042.0 1030.1 1022.3 1024.4 1018.0 1014.8 1025.4 1034.1 1029.1 1032.8 1042.0 DAY 11 4 8 5 22 13 7 6 14 14 5 3 MIN. QNH PRESSURE IN HPA 1000.5 1001.6 1006.3 1004.4 1001.8 1006.4 1007.8 1000.5 1005.9 1008.3 1006.5 1015.7 1000.5 DAY 23 15 30 15 11 17 15 12 10 21 23 20 MEAN QFF PRESSURE IN HPA 1016.8 1018.6 1023.2 1018.0 1013.4 1013.1 1012.6 1010.5 1018.4 1022.1 1019.8 1024.2 1017.6 MAX. QFF PRESSURE IN HPA 1027.6 1023.7 1042.2 1030.3 1022.6 1024.7 1018.4 1015.2 1025.7 1034.4 1029.4 1033.0 1042.2 DAY 11 22 8 5 22 13 7 6 14 14 5 3 MIN. QFF PRESSURE IN HPA 1000.7 1001.9 1006.7 1004.7 1002.1 1006.8 1008.2 1000.9 1006.3 1008.7 1006.8 1015.9 1000.7 DAY 23 15 30 15 11 17 15 12 10 21 23 20 PRESSURE AT HOUR 0900 UTC. MEAN QFE PRESSURE IN HPA 1018.4 1020.2 1025.0 1019.8 1015.2 1014.8 1014.2 1011.9 1019.8 1023.7 1021.1 1025.5 1019.1 MAX. QFE PRESSURE IN HPA 1028.4 1026.0 1044.2 1031.4 1024.4 1025.9 1020.4 1017.1 1027.1 1036.3 1030.9 1034.0 1044.2 DAY 11 4 8 5 22 13 7 6 14 14 5 2 MIN. QFE PRESSURE IN HPA 1002.0 1003.1 1007.0 1004.8 1001.8 1008.3 1010.2 1002.4 1006.5 1009.1 1007.0 1017.7 1001.8 DAY 23 15 5 15 11 24 23 12 10 21 23 20 MEAN QNH PRESSURE IN HPA 1015.9 1017.7 1022.5 1017.3 1012.8 1012.3 1011.7 1009.4 1017.3 1021.2 1018.6 1023.0 1016.7 MAX. QNH PRESSURE IN HPA 1025.9 1023.5 1041.7 1028.9 1021.9 1023.4 1017.9 1014.6 1024.6 1033.8 1028.4 1031.5 1041.7 DAY 11 4 8 5 22 13 7 6 14 14 5 2 MIN. QNH PRESSURE IN HPA 999.6 1000.7 1004.5 1002.4 999.4 1005.8 1007.7 1000.0 1004.1 1006.6 1004.5 1015.2 999.4 DAY 23 15 5 15 11 24 23 12 10 21 23 20 MEAN QFF PRESSURE IN HPA 1016.2 1017.9 1022.8 1017.6 1013.1 1012.7 1012.1 1009.8 1017.7 1021.6 1018.9 1023.3 1017.0 MAX. QFF PRESSURE IN HPA 1026.1 1023.8 1041.9 1029.1 1022.2 1023.8 1018.3 1015.0 1024.9 1034.1 1028.7 1031.7 1041.9 DAY 11 4 8 5 22 13 7 6 14 14 5 2 MIN. QFF PRESSURE IN HPA 999.8 1001.0 1004.8 1002.7 999.7 1006.2 1008.1 1000.4 1004.5 1007.0 1004.8 1015.5 999.7 DAY 23 15 5 15 11 24 23 12 10 21 23 20 PRESSURE AT HOUR 1200 UTC. MEAN QFE PRESSURE IN HPA 1017.5 1019.1 1023.9 1018.8 1014.6 1013.7 1013.5 1010.8 1018.7 1022.9 1020.3 1024.6 1018.2 MAX. QFE PRESSURE IN HPA 1027.8 1025.6 1043.2 1030.6 1023.3 1025.3 1020.0 1016.0 1026.2 1035.4 1030.2 1033.9 1043.2 DAY 11 4 8 5 21 5 7 6 13 14 5 2 MIN. QFE PRESSURE IN HPA 1000.8 1004.5 1004.2 1006.5 998.4 1006.8 1009.3 1001.3 1005.4 1007.5 1006.6 1016.6 998.4 DAY 23 15 5 15 11 17 23 12 10 21 17 14 MEAN QNH PRESSURE IN HPA 1015.1 1016.6 1021.4 1016.3 1012.1 1011.3 1011.0 1008.4 1016.3 1020.4 1017.8 1022.1 1015.7 MAX. QNH PRESSURE IN HPA 1025.3 1023.1 1040.7 1028.1 1020.8 1022.8 1017.5 1013.5 1023.7 1032.9 1027.7 1031.4 1040.7 DAY 11 4 8 5 21 5 7 6 13 14 5 2 MIN. QNH PRESSURE IN HPA 998.4 1002.1 1001.8 1004.1 996.0 1004.4 1006.8 998.9 1003.0 1005.0 1004.2 1014.1 996.0 DAY 23 15 5 15 11 17 23 12 10 21 17 14 MEAN QFF PRESSURE IN HPA 1015.3 1016.8 1021.7 1016.6 1012.5 1011.6 1011.4 1008.8 1016.6 1020.7 1018.1 1022.4 1016.0 MAX. QFF PRESSURE IN HPA 1025.6 1023.4 1040.9 1028.3 1021.1 1023.1 1017.9 1013.9 1024.0 1033.2 1028.0 1031.6 1040.9 DAY 11 4 8 5 22 5 7 6 13 14 5 2 MIN. QFF PRESSURE IN HPA 998.6 1002.4 1002.1 1004.4 996.3 1004.7 1007.2 999.3 1003.3 1005.4 1004.5 1014.4 996.3 DAY 23 15 5 15 11 17 23 12 10 21 17 14 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ASTARA (40709) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 38 25 N LONGITUDE 48 52 E DATA PROCESSING CENTER ELEVATION -18.0 M MEANS AND EXTREMES FOR THE YEAR 2004 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 1500 UTC. MEAN QFE PRESSURE IN HPA 1018.2 1019.5 1024.1 1018.8 1014.5 1013.2 1013.1 1010.6 1018.7 1023.1 1020.8 1025.2 1018.3 MAX. QFE PRESSURE IN HPA 1028.9 1025.7 1043.7 1030.3 1023.3 1025.4 1019.6 1015.6 1026.6 1036.1 1030.3 1035.2 1043.7 DAY 11 4 8 5 21 5 6 6 13 14 5 2 MIN. QFE PRESSURE IN HPA 1001.0 1005.2 1003.1 1007.8 997.0 1005.8 1009.3 1001.6 1007.0 1009.6 1006.3 1017.3 997.0 DAY 23 15 5 23 11 9 14 12 10 21 17 14 MEAN QNH PRESSURE IN HPA 1015.8 1017.0 1021.6 1016.3 1012.0 1010.8 1010.7 1008.2 1016.2 1020.6 1018.3 1022.7 1015.8 MAX. QNH PRESSURE IN HPA 1026.4 1023.2 1041.2 1027.8 1020.8 1022.9 1017.1 1013.1 1024.1 1033.6 1027.8 1032.7 1041.2 DAY 11 4 8 5 21 5 6 6 13 14 5 2 MIN. QNH PRESSURE IN HPA 998.6 1002.8 1000.7 1005.3 994.6 1003.4 1006.8 999.2 1004.5 1007.1 1003.9 1014.8 994.6 DAY 23 15 5 23 11 9 14 12 10 21 17 14 MEAN QFF PRESSURE IN HPA 1016.0 1017.2 1021.9 1016.6 1012.3 1011.1 1011.1 1008.5 1016.5 1020.9 1018.6 1022.9 1016.1 MAX. QFF PRESSURE IN HPA 1026.6 1023.5 1041.4 1028.0 1021.1 1023.2 1017.5 1013.5 1024.4 1033.9 1028.1 1032.9 1041.4 DAY 11 4 8 5 21 5 6 6 13 14 5 2 MIN. QFF PRESSURE IN HPA 998.8 1003.0 1001.0 1005.6 994.9 1003.7 1007.2 999.6 1004.9 1007.5 1004.2 1015.1 994.9 DAY 23 15 5 23 11 9 14 12 10 21 17 14 PRESSURE AT HOUR 1800 UTC. MEAN QFE PRESSURE IN HPA 1018.5 1020.2 1024.7 1019.5 1015.4 1014.1 1014.0 1011.5 1019.5 1023.4 1021.2 1025.7 1019.0 MAX. QFE PRESSURE IN HPA 1029.4 1026.5 1043.9 1030.0 1023.5 1026.3 1021.0 1016.7 1027.6 1036.5 1029.9 1035.9 1043.9 DAY 10 4 8 5 22 5 6 6 13 14 5 2 MIN. QFE PRESSURE IN HPA 1001.2 1006.0 1003.3 1007.7 999.2 1005.9 1009.8 1002.3 1010.1 1011.5 1005.3 1017.7 999.2 DAY 23 14 5 22 11 9 25 11 9 21 17 20 MEAN QNH PRESSURE IN HPA 1016.0 1017.7 1022.2 1017.0 1012.9 1011.6 1011.5 1009.0 1017.0 1021.0 1018.7 1023.2 1016.5 MAX. QNH PRESSURE IN HPA 1026.9 1024.0 1041.4 1027.5 1021.0 1023.8 1018.5 1014.2 1025.1 1034.0 1027.4 1033.4 1041.4 DAY 10 4 8 5 22 5 6 6 13 14 5 2 MIN. QNH PRESSURE IN HPA 998.8 1003.6 1000.9 1005.2 996.8 1003.5 1007.3 999.9 1007.6 1009.0 1002.9 1015.2 996.8 DAY 23 14 5 22 11 9 25 11 9 21 17 20 MEAN QFF PRESSURE IN HPA 1016.3 1018.0 1022.5 1017.3 1013.3 1012.0 1011.9 1009.4 1017.4 1021.3 1019.0 1023.4 1016.8 MAX. QFF PRESSURE IN HPA 1027.1 1024.3 1041.6 1027.7 1021.4 1024.1 1018.9 1014.6 1025.4 1034.3 1027.7 1033.6 1041.6 DAY 10 4 8 5 22 5 6 6 13 14 5 2 MIN. QFF PRESSURE IN HPA 999.0 1003.8 1001.2 1005.5 997.1 1003.8 1007.7 1000.3 1008.0 1009.4 1003.2 1015.4 997.1 DAY 23 14 5 22 11 9 25 11 9 21 17 20 PRESSURE AT HOUR 2100 UTC. MEAN QFE PRESSURE IN HPA 1018.4 1019.8 1024.1 1019.2 1015.1 1014.2 1013.9 1011.4 1019.3 1023.3 1020.9 1025.6 1018.8 MAX. QFE PRESSURE IN HPA 1030.5 1025.6 1043.0 1029.4 1023.4 1025.9 1020.5 1016.8 1027.4 1035.2 1029.0 1036.1 1043.0 DAY 10 4 8 5 21 5 6 6 13 14 4 2 MIN. QFE PRESSURE IN HPA 1002.1 1004.2 1005.1 1005.9 1002.4 1007.9 1009.8 1001.6 1009.8 1013.6 1004.3 1017.8 1001.6 DAY 23 14 5 23 11 9 12 11 9 21 17 20 MEAN QNH PRESSURE IN HPA 1015.9 1017.4 1021.6 1016.8 1012.7 1011.8 1011.4 1008.9 1016.8 1020.8 1018.5 1023.1 1016.3 MAX. QNH PRESSURE IN HPA 1028.0 1023.1 1040.5 1026.9 1020.9 1023.4 1018.0 1014.3 1024.9 1032.7 1026.5 1033.6 1040.5 DAY 10 4 8 5 21 5 6 6 13 14 4 2 MIN. QNH PRESSURE IN HPA 999.7 1001.8 1002.7 1003.5 1000.0 1005.4 1007.3 999.2 1007.3 1011.1 1001.9 1015.3 999.2 DAY 23 14 5 23 11 9 12 11 9 21 17 20 MEAN QFF PRESSURE IN HPA 1016.1 1017.6 1021.9 1017.1 1013.0 1012.1 1011.8 1009.3 1017.2 1021.1 1018.8 1023.4 1016.6 MAX. QFF PRESSURE IN HPA 1028.3 1023.4 1040.7 1027.1 1021.2 1023.7 1018.4 1014.7 1025.2 1033.0 1026.8 1033.8 1040.7 DAY 10 4 8 5 21 5 6 6 13 14 4 2 MIN. QFF PRESSURE IN HPA 999.9 1002.1 1002.9 1003.8 1000.3 1005.8 1007.7 999.6 1007.7 1011.5 1002.2 1015.6 999.6 DAY 23 14 5 23 11 9 12 11 9 21 17 20 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ASTARA (40709) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 38 25 N LONGITUDE 48 52 E DATA PROCESSING CENTER ELEVATION -18.0 M MEANS AND EXTREMES FOR THE YEAR 2005 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AIR TEMPERATURE (C) 6.2 4.9 8.7 13.3 18.6 22.2 26.2 25.8 22.7 17.3 12.1 10.4 15.7 MINIMUN AIR TEMPERATURE (C) 3.2 2.0 5.6 9.8 14.9 18.7 22.3 21.4 19.3 14.0 8.8 7.5 12.3 DAYS WITH MINIMUM TEMP. >=21 0 0 0 0 0 3 27 21 5 0 0 0 56 DAYS WITH MINIMUM TEMP. <=-4 0 0 0 0 0 0 0 0 0 0 0 0 0 DAYS WITH FREEZING MIN.<= 0 2 10 0 0 0 0 0 0 0 0 0 0 12 TEMPERATURE RECORDS LOWEST(C) -0.2 -1.6 2.2 2.6 12.0 14.6 20.0 16.2 16.0 8.2 4.8 1.2 -1.6 DAY 17 11 25 6 7 9 1 31 1 24 24 29 MAXIMUM AIR TEMPERATURE (C) 9.5 7.8 12.1 17.3 22.2 25.8 30.5 30.6 26.2 21.1 15.4 13.7 19.4 DAYS WITH MAXIMUM TEMP. >=30 0 0 0 0 0 0 22 18 0 0 0 0 40 DAYS WITH MAXIMUM TEMP. <= 0 0 0 0 0 0 0 0 0 0 0 0 0 0 TEMPERATURE RECORDS HIGHEST(C) 12.8 25.0 26.6 28.8 26.8 28.8 33.0 35.0 29.4 28.0 20.2 24.0 35.0 DAY 10 28 9 16 28 3 18 18 2 20 2 17 DIF. BETWEEN (MAX.-MIN.) (C) 6.3 5.8 6.5 7.5 7.3 7.1 8.2 9.2 6.9 7.1 6.6 6.2 7.1 MEAN DAILY TEMP. (MDT) (C) 6.3 4.9 8.9 13.5 18.6 22.2 26.4 26.0 22.8 17.6 12.1 10.6 15.8 COOLING DEG. DAYS(BASE 21 0C) 0.0 0.0 0.0 1.7 4.3 46.1 167.7 155.1 54.3 0.4 0.0 0.0 429.6 HEATING DEG. DAYS(BASE 18 0C) 361.5 366.9 283.6 143.9 20.8 0.0 0.0 0.0 0.0 42.8 175.8 230.2 1625.6 DEWPOINT (MEAN C) 3.9 2.8 5.7 9.3 14.8 17.9 21.1 20.3 18.8 14.4 10.1 8.0 12.3 MIXING RATIO (G/KG) 5.01 4.71 5.70 7.41 10.60 12.95 15.91 15.19 13.72 10.31 7.74 6.69 9.66 VAPOUR PRESSURE (HPA) 8.17 7.68 9.25 12.00 17.03 20.67 25.21 24.12 21.92 16.65 12.58 10.89 15.52 SATURATION DEF. (HPA) 1.39 1.30 2.32 4.02 4.74 6.46 9.37 9.80 5.90 3.50 1.80 2.06 4.39 RELATIVE HUMIDITY (MEAN %) 86 88 83 79 80 78 75 73 80 84 88 86 82 RELATIVE HUMIDITY (MAX. %) 96 98 94 92 93 91 90 89 92 95 97 95 94 RELATIVE HUMIDITY (MIN. %) 73 75 70 63 66 63 58 56 65 68 75 74 67 RELATIVE HUMIDITY (MEAN% 03UTC) 91 93 88 87 85 84 83 83 87 89 94 89 88 RELATIVE HUMIDITY (MEAN% 09UTC) 75 82 76 67 71 68 64 63 69 74 78 78 72 RELATIVE HUMIDITY (MEAN% 15UTC) 89 88 84 78 78 74 67 67 80 87 89 87 81 RH=0 => RELATIVE HUMIDITY < 0.5% AMOUNT OF PRECIPITATION MM. 24.0 147.7 118.4 70.2 73.7 105.7 66.1 17.5 88.6 98.0 160.7 96.3 1066.9 DAYS WITH PRECIPITATION >=10 1 5 6 2 1 4 1 0 4 2 3 2 31 DAYS WITH PRECIPITATION >= 5 2 10 8 4 6 4 1 1 6 9 5 5 61 DAYS WITH PRECIPITATION >= 1 4 14 13 5 11 8 2 4 9 11 8 8 97 DAYS WITH PRECIPITATION 7 15 19 9 15 11 6 11 14 16 13 14 150 GREATEST DAILY PRECIPITATION 10.0 25.0 23.0 42.0 21.0 52.0 64.0 6.1 21.0 25.6 62.0 35.0 64.0 DAY 3 5 24 2 16 8 13 21 4 8 13 21 DAY WITH THUNDER STORM 0 0 0 0 8 6 1 2 2 3 3 0 25 DAYS WITH SNOW OR SLEET 0 8 0 0 0 0 0 0 0 0 0 0 8 DAYS WITH DUST 0 0 0 0 0 0 0 0 0 1 0 0 1 WIND DIRECTION (PREVAILING) 45 315 135 135 135 135 135 135 225 315 315 135 135 PREVAILING WIND SPEED(KNOTS) 5.7 8.6 10.1 9.7 8.7 9.1 7.7 7.4 5.2 10.1 10.1 7.5 8.9 PREVAILING WIND PERCENT 5.6 19.2 12.9 17.1 20.2 20.8 13.7 11.3 5.0 6.0 6.3 4.8 10.1 CALMS PERCENT OF WIND 82.7 57.6 62.5 65.0 65.7 69.6 72.2 63.7 74.2 76.2 83.3 80.2 71.2 NO. OF WIND OBSERVATION 248 224 248 240 248 240 248 248 240 248 240 248 2920 VECTOR WIND DIRECTION (MEAN) 23 315 138 144 128 131 118 106 119 14 330 211 121 VECTOR WIND MAGNITUDE(KNOTS) 0.5 0.8 0.9 1.5 2.0 2.1 1.5 1.4 0.4 0.4 0.7 0.4 0.7 WIND STEADINESES (MEAN %) 45.5 21.6 26.5 44.1 74.1 77.8 68.2 56.0 21.1 20.0 50.0 21.1 29.2 WIND SPEED (MEAN KNOTS) 1.1 3.7 3.4 3.4 2.7 2.7 2.2 2.5 1.9 2.0 1.4 1.9 2.4 FASTEST WIND DIRECTION 360 210 240 280 150 210 150 140 140 310 310 350 240 FASTEST WIND SPEED (KNOTS) 23 27 49 33 23 23 17 17 27 21 19 35 49 DAY 25 28 9 16 9 1 7 19 1 20 6 20 DAYS WITH SKY CLEAR (0-2)/8 6 7 4 5 7 9 12 16 10 8 4 5 93 DAYS WITH P.CLOUDY (3-6)/8 11 4 6 11 13 10 15 4 5 8 12 10 109 DAYS WITH CLOUDY (7-8)/8 14 17 21 14 11 11 4 11 15 15 14 16 163 DAYS WITH VISIBILITY =< 2 KM 3 10 9 5 1 3 1 1 2 3 5 1 44 DURATION OF SUNSHINE HOURS 100.8 100.6 104.1 179.7 200.5 187.6 264.1 218.2 138.0 102.8 96.6 92.2 1785.2 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ASTARA (40709) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 38 25 N LONGITUDE 48 52 E DATA PROCESSING CENTER ELEVATION -18.0 M MEANS AND EXTREMES FOR THE YEAR 2005 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL MEAN QFE PRESSURE IN HPA 1022.9 1024.2 1019.4 1021.0 1017.1 1014.3 1011.6 1013.1 1016.2 1022.2 1024.6 1024.6 1019.3 MAX. QFE PRESSURE IN HPA 1033.5 1035.7 1031.5 1038.9 1025.0 1023.5 1017.9 1020.9 1024.1 1035.5 1033.7 1042.1 1042.1 DAY-HOUR 8- 6 16- 6 26- 6 6- 6 10-18 8- 6 8- 6 30- 6 7- 6 23- 6 13-18 30-18 MIN. QFE PRESSURE IN HPA 1007.0 1005.4 1000.6 1007.1 1006.8 1001.0 998.9 1005.2 1007.8 1003.8 1013.4 1005.4 998.9 DAY-HOUR 24-12 28-12 9-12 16- 0 3-15 20-12 5-21 8-12 11-15 20- 3 21- 0 16-18 MEAN QNH PRESSURE IN HPA 1020.5 1021.7 1016.9 1018.5 1014.6 1011.8 1009.2 1010.6 1013.7 1019.8 1022.1 1022.1 1016.8 MAX. QNH PRESSURE IN HPA 1031.0 1033.2 1029.0 1036.4 1022.5 1021.0 1015.4 1018.4 1021.6 1033.0 1031.2 1039.6 1039.6 DAY-HOUR 8- 6 16- 6 26- 6 6- 6 10-18 8- 6 8- 6 30- 6 7- 6 23- 6 13-18 30-18 MIN. QNH PRESSURE IN HPA 1004.5 1003.0 998.2 1004.6 1004.4 998.6 996.5 1002.8 1005.3 1001.4 1010.9 1003.0 996.5 DAY-HOUR 24-12 28-12 9-12 16- 0 3-15 20-12 5-21 8-12 11-15 20- 3 21- 0 16-18 MEAN QFF PRESSURE IN HPA 1020.7 1021.9 1017.1 1018.8 1014.9 1012.2 1009.6 1011.0 1014.1 1020.1 1022.4 1022.4 1017.1 MAX. QFF PRESSURE IN HPA 1031.2 1033.4 1029.2 1036.6 1022.9 1021.4 1015.8 1018.8 1022.0 1033.3 1031.5 1039.8 1039.8 DAY-HOUR 9- 6 16- 6 26- 6 6- 6 10-18 8- 9 8- 9 30- 6 7- 6 23- 6 13-18 30-18 MIN. QFF PRESSURE IN HPA 1004.8 1003.3 998.5 1005.0 1004.7 998.9 996.9 1003.2 1005.7 1001.7 1011.2 1003.2 996.9 DAY-HOUR 24-12 28-12 9-12 16- 0 3-15 20-12 5-21 8-12 11-15 20- 3 21- 0 16-18 PRESSURE AT HOUR 0000 UTC. MEAN QFE PRESSURE IN HPA 1023.0 1023.9 1019.1 1020.8 1016.7 1014.1 1011.4 1012.8 1016.0 1022.0 1024.3 1024.6 1019.1 MAX. QFE PRESSURE IN HPA 1032.6 1033.9 1030.2 1038.7 1023.4 1022.0 1016.4 1019.8 1022.5 1034.2 1033.2 1041.1 1041.1 DAY 9 16 26 6 11 8 9 27 7 23 14 31 MIN. QFE PRESSURE IN HPA 1008.2 1009.4 1006.8 1007.1 1008.4 1005.3 999.0 1005.6 1008.5 1004.1 1013.4 1006.7 999.0 DAY 24 28 20 16 4 20 6 8 12 20 21 17 MEAN QNH PRESSURE IN HPA 1020.5 1021.4 1016.6 1018.3 1014.2 1011.7 1008.9 1010.4 1013.5 1019.5 1021.8 1022.1 1016.6 MAX. QNH PRESSURE IN HPA 1030.1 1031.4 1027.7 1036.2 1020.9 1019.5 1013.9 1017.3 1020.0 1031.7 1030.7 1038.6 1038.6 DAY 9 16 26 6 11 8 9 27 7 23 14 31 MIN. QNH PRESSURE IN HPA 1005.7 1006.9 1004.4 1004.6 1005.9 1002.9 996.6 1003.2 1006.0 1001.7 1010.9 1004.3 996.6 DAY 24 28 20 16 4 20 6 8 12 20 21 17 MEAN QFF PRESSURE IN HPA 1020.8 1021.6 1016.9 1018.6 1014.6 1012.0 1009.3 1010.8 1013.9 1019.8 1022.1 1022.4 1016.9 MAX. QFF PRESSURE IN HPA 1030.3 1031.6 1027.9 1036.4 1021.3 1019.9 1014.3 1017.7 1020.4 1032.0 1031.0 1038.8 1038.8 DAY 9 16 26 6 19 8 9 27 7 23 14 31 MIN. QFF PRESSURE IN HPA 1006.0 1007.2 1004.6 1005.0 1006.3 1003.2 997.0 1003.6 1006.4 1002.0 1011.2 1004.6 997.0 DAY 24 28 20 16 4 20 6 8 12 20 21 17 PRESSURE AT HOUR 0300 UTC. MEAN QFE PRESSURE IN HPA 1022.8 1023.9 1019.5 1021.3 1017.4 1014.8 1012.1 1013.3 1016.6 1022.3 1024.5 1024.7 1019.4 MAX. QFE PRESSURE IN HPA 1032.4 1034.4 1031.2 1037.6 1024.2 1022.8 1017.5 1020.6 1023.5 1034.5 1032.5 1040.1 1040.1 DAY 9 16 26 6 18 8 8 30 7 23 14 31 MIN. QFE PRESSURE IN HPA 1007.8 1008.0 1005.5 1008.8 1009.3 1005.3 1001.3 1006.1 1010.0 1003.8 1014.4 1007.4 1001.3 DAY 24 20 20 16 4 20 6 8 12 20 21 17 MEAN QNH PRESSURE IN HPA 1020.4 1021.4 1017.1 1018.8 1014.9 1012.3 1009.6 1010.9 1014.2 1019.8 1022.0 1022.2 1017.0 MAX. QNH PRESSURE IN HPA 1029.9 1031.9 1028.7 1035.1 1021.7 1020.3 1015.0 1018.1 1021.0 1032.0 1030.0 1037.6 1037.6 DAY 9 16 26 6 18 8 8 30 7 23 14 31 MIN. QNH PRESSURE IN HPA 1005.3 1005.5 1003.1 1006.3 1006.8 1002.9 998.9 1003.7 1007.5 1001.4 1011.9 1004.9 998.9 DAY 24 20 20 16 4 20 6 8 12 20 21 17 MEAN QFF PRESSURE IN HPA 1020.6 1021.6 1017.3 1019.1 1015.2 1012.7 1010.0 1011.3 1014.5 1020.1 1022.2 1022.5 1017.3 MAX. QFF PRESSURE IN HPA 1030.1 1032.1 1028.9 1035.3 1022.0 1020.7 1015.4 1018.5 1021.4 1032.3 1030.3 1037.8 1037.8 DAY 9 16 26 6 18 8 8 30 7 23 14 31 MIN. QFF PRESSURE IN HPA 1005.6 1005.8 1003.4 1006.7 1007.2 1003.2 999.3 1004.1 1007.9 1001.7 1012.2 1005.3 999.3 DAY 24 20 20 16 4 20 6 8 12 20 21 17 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ASTARA (40709) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 38 25 N LONGITUDE 48 52 E DATA PROCESSING CENTER ELEVATION -18.0 M MEANS AND EXTREMES FOR THE YEAR 2005 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 0600 UTC. MEAN QFE PRESSURE IN HPA 1024.1 1025.0 1020.2 1022.1 1017.9 1015.0 1012.6 1013.9 1017.2 1023.2 1025.5 1025.9 1020.2 MAX. QFE PRESSURE IN HPA 1033.5 1035.7 1031.5 1038.9 1024.6 1023.5 1017.9 1020.9 1024.1 1035.5 1033.2 1040.8 1040.8 DAY 8 16 26 6 18 8 8 30 7 23 24 30 MIN. QFE PRESSURE IN HPA 1008.6 1009.3 1004.7 1009.1 1009.9 1004.1 1003.5 1006.1 1011.3 1007.3 1015.9 1008.7 1003.5 DAY 23 28 9 16 4 20 6 8 12 20 21 17 MEAN QNH PRESSURE IN HPA 1021.7 1022.6 1017.7 1019.7 1015.5 1012.6 1010.1 1011.4 1014.8 1020.7 1023.0 1023.4 1017.7 MAX. QNH PRESSURE IN HPA 1031.0 1033.2 1029.0 1036.4 1022.1 1021.0 1015.4 1018.4 1021.6 1033.0 1030.7 1038.3 1038.3 DAY 8 16 26 6 18 8 8 30 7 23 24 30 MIN. QNH PRESSURE IN HPA 1006.1 1006.8 1002.3 1006.6 1007.4 1001.7 1001.1 1003.7 1008.8 1004.8 1013.4 1006.2 1001.1 DAY 23 28 9 16 4 20 6 8 12 20 21 17 MEAN QFF PRESSURE IN HPA 1021.9 1022.8 1018.0 1019.9 1015.8 1012.9 1010.5 1011.8 1015.2 1021.0 1023.3 1023.6 1018.1 MAX. QFF PRESSURE IN HPA 1031.2 1033.4 1029.2 1036.6 1022.4 1021.4 1015.8 1018.8 1022.0 1033.3 1031.0 1038.5 1038.5 DAY 9 16 26 6 18 8 8 30 7 23 24 30 MIN. QFF PRESSURE IN HPA 1006.4 1007.1 1002.5 1007.0 1007.8 1002.0 1001.5 1004.1 1009.2 1005.2 1013.7 1006.6 1001.5 DAY 23 28 9 16 4 20 6 8 12 20 21 17 PRESSURE AT HOUR 0900 UTC. MEAN QFE PRESSURE IN HPA 1023.3 1024.6 1019.3 1021.5 1017.6 1014.6 1012.2 1013.3 1016.4 1022.4 1024.7 1024.8 1019.6 MAX. QFE PRESSURE IN HPA 1032.2 1034.8 1030.6 1038.3 1024.9 1023.5 1017.9 1020.1 1023.7 1034.6 1032.7 1040.8 1040.8 DAY 9 16 26 5 18 8 8 29 7 23 13 30 MIN. QFE PRESSURE IN HPA 1007.7 1007.8 1002.5 1008.6 1008.6 1002.8 1003.0 1005.5 1010.0 1009.1 1014.7 1007.7 1002.5 DAY 24 28 9 16 3 20 6 8 11 17 21 17 MEAN QNH PRESSURE IN HPA 1020.8 1022.1 1016.9 1019.0 1015.1 1012.2 1009.7 1010.9 1013.9 1019.9 1022.2 1022.3 1017.1 MAX. QNH PRESSURE IN HPA 1029.7 1032.3 1028.1 1035.8 1022.4 1021.0 1015.4 1017.6 1021.2 1032.1 1030.2 1038.3 1038.3 DAY 9 16 26 5 18 8 8 29 7 23 13 30 MIN. QNH PRESSURE IN HPA 1005.2 1005.3 1000.1 1006.1 1006.1 1000.4 1000.6 1003.1 1007.5 1006.6 1012.2 1005.2 1000.1 DAY 24 28 9 16 3 20 6 8 11 17 21 17 MEAN QFF PRESSURE IN HPA 1021.1 1022.3 1017.1 1019.3 1015.4 1012.5 1010.1 1011.3 1014.3 1020.2 1022.5 1022.6 1017.4 MAX. QFF PRESSURE IN HPA 1029.9 1032.5 1028.3 1036.0 1022.7 1021.4 1015.8 1018.0 1021.6 1032.4 1030.5 1038.5 1038.5 DAY 9 16 26 5 18 8 8 29 7 23 13 30 MIN. QFF PRESSURE IN HPA 1005.5 1005.6 1000.3 1006.5 1006.5 1000.7 1001.0 1003.5 1007.9 1007.0 1012.5 1005.6 1000.3 DAY 24 28 9 16 3 20 6 8 11 17 21 17 PRESSURE AT HOUR 1200 UTC. MEAN QFE PRESSURE IN HPA 1022.3 1023.5 1018.4 1020.5 1016.7 1013.8 1011.2 1012.5 1015.4 1021.6 1024.1 1023.8 1018.6 MAX. QFE PRESSURE IN HPA 1032.0 1033.2 1028.7 1038.3 1024.7 1022.6 1016.3 1019.6 1022.5 1033.5 1033.1 1040.3 1040.3 DAY 8 16 17 5 18 8 8 29 7 23 23 30 MIN. QFE PRESSURE IN HPA 1007.0 1005.4 1000.6 1009.2 1007.5 1001.0 1001.4 1005.2 1008.4 1007.0 1013.8 1006.7 1000.6 DAY 24 28 9 16 3 20 5 8 11 17 21 16 MEAN QNH PRESSURE IN HPA 1019.9 1021.1 1015.9 1018.0 1014.2 1011.3 1008.8 1010.0 1013.0 1019.1 1021.6 1021.3 1016.2 MAX. QNH PRESSURE IN HPA 1029.5 1030.7 1026.2 1035.8 1022.2 1020.1 1013.8 1017.1 1020.0 1031.0 1030.6 1037.8 1037.8 DAY 8 16 17 5 18 8 8 29 7 23 23 30 MIN. QNH PRESSURE IN HPA 1004.5 1003.0 998.2 1006.7 1005.0 998.6 999.0 1002.8 1005.9 1004.5 1011.3 1004.3 998.2 DAY 24 28 9 16 3 20 5 8 11 17 21 16 MEAN QFF PRESSURE IN HPA 1020.1 1021.3 1016.2 1018.3 1014.6 1011.7 1009.2 1010.4 1013.3 1019.4 1021.9 1021.6 1016.5 MAX. QFF PRESSURE IN HPA 1029.7 1030.9 1026.4 1036.0 1022.5 1020.5 1014.2 1017.5 1020.4 1031.3 1030.9 1038.0 1038.0 DAY 8 16 17 5 18 8 8 29 7 23 23 30 MIN. QFF PRESSURE IN HPA 1004.8 1003.3 998.5 1007.1 1005.4 998.9 999.4 1003.2 1006.3 1004.9 1011.6 1004.5 998.5 DAY 24 28 9 16 3 20 5 8 11 17 21 16 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ASTARA (40709) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 38 25 N LONGITUDE 48 52 E DATA PROCESSING CENTER ELEVATION -18.0 M MEANS AND EXTREMES FOR THE YEAR 2005 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 1500 UTC. MEAN QFE PRESSURE IN HPA 1022.7 1023.9 1018.7 1020.2 1016.5 1013.5 1010.6 1012.3 1015.4 1021.8 1024.6 1024.2 1018.7 MAX. QFE PRESSURE IN HPA 1032.0 1033.3 1028.9 1038.3 1024.1 1021.8 1017.0 1019.8 1022.7 1033.1 1033.5 1041.2 1041.2 DAY 8 16 17 5 18 8 12 29 7 23 23 30 MIN. QFE PRESSURE IN HPA 1008.3 1005.8 1003.7 1009.9 1006.8 1001.3 999.2 1005.4 1007.8 1006.5 1014.3 1005.8 999.2 DAY 24 28 9 30 3 20 5 7 11 17 21 16 MEAN QNH PRESSURE IN HPA 1020.2 1021.4 1016.2 1017.8 1014.0 1011.0 1008.2 1009.9 1012.9 1019.3 1022.1 1021.7 1016.2 MAX. QNH PRESSURE IN HPA 1029.5 1030.8 1026.4 1035.8 1021.6 1019.3 1014.5 1017.3 1020.2 1030.6 1031.0 1038.7 1038.7 DAY 8 16 17 5 18 8 12 29 7 23 23 30 MIN. QNH PRESSURE IN HPA 1005.8 1003.4 1001.3 1007.4 1004.4 998.9 996.8 1003.0 1005.3 1004.1 1011.8 1003.4 996.8 DAY 24 28 9 30 3 20 5 7 11 17 21 16 MEAN QFF PRESSURE IN HPA 1020.4 1021.7 1016.4 1018.0 1014.3 1011.4 1008.6 1010.3 1013.3 1019.7 1022.4 1022.0 1016.5 MAX. QFF PRESSURE IN HPA 1029.7 1031.0 1026.6 1036.0 1021.9 1019.7 1014.9 1017.7 1020.6 1030.9 1031.3 1038.9 1038.9 DAY 8 16 17 5 18 8 12 29 7 23 23 30 MIN. QFF PRESSURE IN HPA 1006.1 1003.6 1001.5 1007.8 1004.7 999.2 997.2 1003.4 1005.7 1004.4 1012.1 1003.6 997.2 DAY 24 28 9 30 3 20 5 7 11 17 21 16 PRESSURE AT HOUR 1800 UTC. MEAN QFE PRESSURE IN HPA 1022.9 1024.4 1020.0 1021.0 1017.1 1014.4 1011.5 1013.3 1016.4 1022.5 1024.7 1024.6 1019.4 MAX. QFE PRESSURE IN HPA 1033.1 1034.5 1029.4 1038.6 1025.0 1022.3 1017.8 1020.5 1023.4 1033.4 1033.7 1042.1 1042.1 DAY 8 15 17 5 10 8 12 29 6 22 13 30 MIN. QFE PRESSURE IN HPA 1009.1 1007.2 1008.8 1010.3 1007.9 1003.9 999.4 1006.0 1008.5 1007.6 1014.5 1005.4 999.4 DAY 23 28 19 19 3 20 5 7 11 19 21 16 MEAN QNH PRESSURE IN HPA 1020.4 1021.9 1017.5 1018.6 1014.7 1011.9 1009.1 1010.8 1013.9 1020.1 1022.2 1022.2 1016.9 MAX. QNH PRESSURE IN HPA 1030.6 1032.0 1026.9 1036.1 1022.5 1019.8 1015.3 1018.0 1020.9 1030.9 1031.2 1039.6 1039.6 DAY 8 15 17 5 10 8 12 29 6 22 13 30 MIN. QNH PRESSURE IN HPA 1006.6 1004.7 1006.3 1007.8 1005.4 1001.5 997.0 1003.6 1006.0 1005.1 1012.0 1003.0 997.0 DAY 23 28 19 19 3 20 5 7 11 19 21 16 MEAN QFF PRESSURE IN HPA 1020.6 1022.1 1017.8 1018.8 1015.0 1012.3 1009.5 1011.2 1014.3 1020.4 1022.5 1022.4 1017.2 MAX. QFF PRESSURE IN HPA 1030.8 1032.2 1027.2 1036.3 1022.9 1020.2 1015.7 1018.4 1021.3 1031.2 1031.5 1039.8 1039.8 DAY 8 15 17 5 10 8 12 29 6 22 13 30 MIN. QFF PRESSURE IN HPA 1006.9 1005.1 1006.6 1008.2 1005.8 1001.8 997.4 1004.0 1006.4 1005.5 1012.3 1003.2 997.4 DAY 23 28 19 19 3 20 5 7 11 19 21 16 PRESSURE AT HOUR 2100 UTC. MEAN QFE PRESSURE IN HPA 1022.5 1024.1 1019.8 1020.6 1016.9 1014.2 1011.7 1013.2 1016.1 1022.4 1024.4 1024.5 1019.2 MAX. QFE PRESSURE IN HPA 1032.6 1033.9 1029.8 1038.7 1024.4 1021.9 1017.1 1020.3 1023.0 1033.6 1033.7 1041.7 1041.7 DAY 8 15 25 5 18 7 12 28 6 22 13 30 MIN. QFE PRESSURE IN HPA 1008.7 1008.1 1007.9 1008.9 1007.9 1005.1 998.9 1005.8 1008.6 1005.5 1013.8 1006.4 998.9 DAY 23 28 8 15 3 20 5 7 11 19 5 16 MEAN QNH PRESSURE IN HPA 1020.0 1021.6 1017.3 1018.2 1014.5 1011.7 1009.2 1010.8 1013.7 1019.9 1021.9 1022.0 1016.7 MAX. QNH PRESSURE IN HPA 1030.1 1031.4 1027.3 1036.2 1021.9 1019.4 1014.6 1017.8 1020.5 1031.1 1031.2 1039.2 1039.2 DAY 8 15 25 5 18 7 12 28 6 22 13 30 MIN. QNH PRESSURE IN HPA 1006.2 1005.6 1005.4 1006.4 1005.4 1002.7 996.5 1003.4 1006.1 1003.1 1011.3 1004.0 996.5 DAY 23 28 8 15 3 20 5 7 11 19 5 16 MEAN QFF PRESSURE IN HPA 1020.2 1021.9 1017.6 1018.5 1014.8 1012.1 1009.6 1011.2 1014.1 1020.2 1022.2 1022.3 1017.1 MAX. QFF PRESSURE IN HPA 1030.3 1031.6 1027.5 1036.4 1022.3 1019.8 1015.0 1018.2 1020.9 1031.4 1031.5 1039.4 1039.4 DAY 8 15 25 5 18 7 12 28 6 22 13 30 MIN. QFF PRESSURE IN HPA 1006.5 1006.0 1005.7 1006.8 1005.8 1003.0 996.9 1003.8 1006.5 1003.4 1011.7 1004.3 996.9 DAY 23 28 8 15 3 20 5 7 11 19 5 16 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ASTARA (40709) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 38 25 N LONGITUDE 48 52 E DATA PROCESSING CENTER ELEVATION -18.0 M CLIMATOLOGICAL NORMALS FOR THE PERIOD 1986-2005 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AIR TEMPERATURE (C) 5.6 5.7 8.1 12.9 17.8 22.7 25.4 25.3 21.5 16.8 11.6 7.4 15.1 MINIMUN AIR TEMPERATURE (C) 2.8 2.7 5.3 9.7 14.2 18.4 20.9 21.2 18.1 13.8 8.8 4.6 11.7 DAYS WITH MINIMUM TEMP. >=21 0.0 0.0 0.0 0.0 0.0 3.5 17.3 18.1 3.2 0.0 0.0 0.0 42.1 DAYS WITH MINIMUM TEMP. <=-4 0.4 0.2 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.1 0.7 DAYS WITH FREEZING MIN.<= 0 5.1 5.6 0.7 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 3.1 14.5 TEMPERATURE RECORDS LOWEST(C) -7.0 -5.0 -1.6 0.6 5.4 12.0 14.8 14.2 11.4 5.8 0.4 -5.0 -7.0 YEAR-DAY 90- 8 94-19 90-18 4- 6 92- 5 0-13 92-11 87-30 86-30 87-28 87-30 2-28 90- 8 MAXIMUM AIR TEMPERATURE (C) 9.0 9.2 11.2 16.4 21.4 26.6 29.6 29.4 25.1 20.3 14.9 11.0 18.7 DAYS WITH MAXIMUM TEMP. >=30 0.0 0.0 0.0 0.3 0.3 3.3 15.3 15.2 1.5 0.1 0.0 0.0 36.0 DAYS WITH MAXIMUM TEMP. <= 0 0.1 0.2 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.3 TEMPERATURE RECORDS HIGHEST(C) 25.6 26.4 28.4 32.0 31.4 34.4 35.6 35.6 34.6 32.6 29.2 29.0 35.6 YEAR-DAY 3- 7 96- 9 2-27 94-24 94-29 91-29 2-16 98- 4 96- 7 89- 2 89-27 98-11 2-16 DIF. BETWEEN (MAX.-MIN.) (C) 6.2 6.5 5.9 6.7 7.2 8.2 8.7 8.2 7.0 6.5 6.1 6.4 7.0 MEAN DAILY TEMP. (MDT) (C) 5.9 6.0 8.2 13.1 17.8 22.5 25.3 25.3 21.6 17.0 11.9 7.8 15.2 STANDARD DEVIATION OF MDT(C) 1.10 1.79 1.46 1.50 1.03 0.96 0.84 0.93 1.02 1.41 1.53 1.79 1.28 COOLING DEG. DAYS(BASE 21 0C) 0.0 0.0 0.0 0.8 3.6 55.3 133.4 134.1 40.6 1.6 0.0 0.0 369.4 HEATING DEG. DAYS(BASE 18 0C) 375.1 338.9 302.3 151.2 37.7 1.0 0.1 0.0 3.1 52.1 185.0 316.1 1762.6 DEWPOINT (MEAN C) 2.8 2.9 5.5 9.8 14.4 18.0 19.9 20.5 18.4 14.5 9.3 4.8 11.7 MIXING RATIO (G/KG) 4.67 4.72 5.66 7.64 10.36 13.08 14.80 15.37 13.40 10.38 7.39 5.40 9.41 VAPOUR PRESSURE (HPA) 7.63 7.70 9.20 12.35 16.65 20.85 23.51 24.42 21.43 16.76 12.00 8.81 15.11 SATURATION DEF. (HPA) 1.72 1.75 1.84 2.98 4.20 7.27 9.50 8.41 4.81 2.80 2.04 1.84 4.10 RELATIVE HUMIDITY (MEAN %) 84 84 85 83 82 76 74 77 84 87 87 85 82 RELATIVE HUMIDITY (MAX. %) 94 95 95 94 94 91 90 91 95 96 95 95 94 RELATIVE HUMIDITY (MIN. %) 69 71 73 69 67 60 57 60 69 74 73 71 68 RELATIVE HUMIDITY (MEAN% 03UTC) 87 89 91 90 89 85 83 86 91 93 91 89 89 RELATIVE HUMIDITY (MEAN% 09UTC) 74 76 77 75 72 65 61 65 73 77 78 75 72 RELATIVE HUMIDITY (MEAN% 15UTC) 86 85 84 81 79 72 68 73 84 90 89 87 82 RH=0 => RELATIVE HUMIDITY < 0.5% AMOUNT OF PRECIPITATION MM. 91.5 96.2 118.6 70.4 68.5 52.0 46.7 81.9 235.6 242.2 166.1 111.1 1380.8 DAYS WITH PRECIPITATION >=10 3.4 3.2 4.2 2.1 1.7 1.7 1.1 2.7 5.4 6.0 5.9 3.6 41.0 DAYS WITH PRECIPITATION >= 5 5.3 5.7 6.9 3.9 3.7 2.7 1.6 3.7 7.3 8.7 7.7 5.8 63.0 DAYS WITH PRECIPITATION >= 1 8.6 9.3 11.4 8.0 7.9 5.0 3.1 5.6 9.8 12.2 10.8 9.1 100.8 DAYS WITH PRECIPITATION 12.9 12.8 15.8 14.1 13.6 8.8 5.9 8.9 12.7 15.5 15.0 12.3 148.3 GREATEST DAILY PRECIPITATION 62.0 82.0 65.0 50.0 66.4 58.9 121.0 113.0 190.0 161.0 147.0 87.3 190.0 YEAR-DAY 1-24 89-11 91- 9 4-16 4-14 3- 5 92-10 0-26 0-25 95-24 4- 4 90-11 0 DAY WITH THUNDER STORM 0.1 0.1 0.7 2.5 5.7 4.8 2.3 2.1 1.7 1.5 0.5 0.1 22.1 DAYS WITH SNOW OR SLEET 2.2 4.0 0.9 0.1 0.0 0.0 0.0 0.0 0.0 0.0 0.2 1.5 8.9 DAYS WITH DUST 0.1 0.1 0.1 0.0 0.1 0.1 0.3 0.2 0.1 0.1 0.1 0.3 1.6 WIND DIRECTION (PREVAILING) 360 360 135 135 135 135 135 135 135 315 315 360 135 PREVAILING WIND SPEED(KNOTS) 6.1 6.0 7.1 7.2 6.9 7.5 6.8 6.6 6.3 7.1 7.1 5.7 6.9 PREVAILING WIND PERCENT 11.0 9.6 11.0 16.0 17.5 18.4 13.4 9.9 7.0 8.0 9.4 10.0 9.3 CALMS PERCENT OF WIND 67.4 64.8 61.1 58.3 60.4 57.7 63.1 65.5 66.9 70.5 70.3 68.9 64.6 NO. OF WIND OBSERVATION 243.3 221.8 243.3 235.5 241.8 232.0 243.1 243.0 235.4 243.3 235.3 247.0 2864.8 VECTOR WIND DIRECTION (MEAN) 335 348 129 139 132 133 116 102 61 351 338 326 101 VECTOR WIND MAGNITUDE(KNOTS) 0.7 0.4 0.5 1.2 1.5 1.7 1.2 0.9 0.3 0.6 1.0 0.8 0.4 WIND STEADINESES (MEAN %) 33.3 16.7 19.2 42.9 57.7 58.6 52.2 42.9 15.0 33.3 50.0 40.0 17.4 WIND SPEED (MEAN KNOTS) 2.1 2.4 2.6 2.8 2.6 2.9 2.3 2.1 2.0 1.8 2.0 2.0 2.3 FASTEST WIND DIRECTION 210 150 240 240 160 210 340 310 140 180 240 270 150 FASTEST WIND SPEED (KNOTS) 39 68 49 49 23 23 29 19 27 23 39 54 68 YEAR-DAY 0-20 1-23 5- 9 95-19 91-27 5- 1 99-12 88- 4 5- 1 99-14 4-22 0-21 1 DAYS WITH SKY CLEAR (0-2)/8 6.9 6.2 5.3 5.1 9.1 14.8 15.1 14.4 11.3 7.7 6.1 6.1 108.1 DAYS WITH P.CLOUDY (3-6)/8 8.5 7.1 7.6 9.8 11.0 9.8 10.7 8.1 6.8 8.0 6.8 9.2 103.4 DAYS WITH CLOUDY (7-8)/8 15.5 14.8 18.0 15.0 10.8 5.3 5.2 8.5 11.9 15.2 17.0 15.6 152.8 DAYS WITH VISIBILITY =< 2 KM 6.7 7.3 8.1 6.4 2.2 1.1 0.8 1.6 5.1 5.6 6.1 6.1 57.1 DURATION OF SUNSHINE HOURS 99.2 103.7 107.4 135.7 193.0 247.1 263.7 218.1 148.2 117.0 90.0 88.8 1811.9 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ASTARA (40709) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 38 25 N LONGITUDE 48 52 E DATA PROCESSING CENTER ELEVATION -18.0 M CLIMATOLOGICAL NORMALS FOR THE PERIOD 1986-2005 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL MEAN QFE PRESSURE IN HPA 1024.2 1023.5 1021.7 1018.9 1017.2 1013.5 1012.2 1013.3 1017.6 1022.4 1024.0 1024.2 1019.4 MAX. QFE PRESSURE IN HPA 1045.7 1042.5 1050.0 1038.9 1035.4 1028.5 1023.2 1027.5 1032.8 1040.4 1044.2 1047.4 1050.0 YEAR-DAY 93- 6 94-17 90-16 5- 6 3- 1 3- 5 92-11 96-29 96-30 95-17 87-30 3-11 90-16 MIN. QFE PRESSURE IN HPA 1000.8 997.4 997.6 998.7 997.0 994.7 996.3 1001.0 1001.0 1003.1 1003.7 998.2 994.7 YEAR-DAY 4-23 99-20 88- 3 97- 5 4-11 95-29 91- 7 4-12 90-13 89- 2 92-22 88-26 95-29 MEAN QNH PRESSURE IN HPA 1021.7 1021.0 1019.2 1016.4 1014.7 1011.0 1009.7 1010.8 1015.1 1019.9 1021.6 1021.7 1016.9 MAX. QNH PRESSURE IN HPA 1043.2 1040.0 1047.5 1036.4 1032.9 1026.0 1020.7 1025.0 1030.3 1037.9 1041.7 1044.9 1047.5 YEAR-DAY 93- 6 94-17 90-16 5- 6 3- 1 3- 5 92-11 96-29 96-30 95-17 87-30 3-11 90-16 MIN. QNH PRESSURE IN HPA 998.4 995.0 995.2 996.3 994.6 992.3 993.9 998.6 998.6 1000.7 1001.3 995.8 992.3 YEAR-DAY 4-23 99-20 88- 3 97- 5 4-11 95-29 91- 7 4-12 90-13 89- 2 92-22 88-26 95-29 MEAN QFF PRESSURE IN HPA 1022.1 1021.3 1019.1 1016.6 1015.1 1011.6 1010.0 1011.1 1015.4 1020.2 1021.8 1021.9 1017.2 MAX. QFF PRESSURE IN HPA 1043.4 1040.2 1047.6 1036.6 1033.2 1026.3 1021.1 1025.4 1030.6 1038.2 1041.9 1045.1 1047.6 YEAR-DAY 93- 6 94-17 90-16 5- 6 3- 1 3- 5 96- 3 96-29 96-30 95-17 87-30 3-11 90-16 MIN. QFF PRESSURE IN HPA 998.6 995.3 995.4 996.6 994.9 992.7 994.3 999.0 998.9 1001.0 1001.6 996.0 992.7 YEAR-DAY 4-23 99-20 88- 3 97- 5 4-11 95-29 91- 7 4-12 90-13 89- 2 92-22 88-26 95-29 PRESSURE AT HOUR 0000 UTC. MEAN QFE PRESSURE IN HPA 1024.2 1023.2 1020.9 1018.3 1017.0 1013.5 1011.9 1013.0 1017.3 1022.0 1023.7 1024.1 1019.1 MAX. QFE PRESSURE IN HPA 1044.3 1041.8 1047.7 1038.7 1033.6 1027.5 1021.8 1026.6 1030.7 1038.9 1043.2 1043.4 1047.7 YEAR-DAY 96-10 94-18 90-17 5- 6 3- 1 3- 6 92-12 96-29 93-22 98- 9 87-30 86-10 90-17 MIN. QFE PRESSURE IN HPA 1002.3 1000.0 999.5 1004.0 1002.3 999.5 999.0 1001.0 1001.5 1004.0 1004.8 998.2 998.2 YEAR-DAY 0-21 99-20 88- 3 97- 5 87-23 95-29 5- 6 4-12 90-14 89- 2 4-18 88-26 88-26 MEAN QNH PRESSURE IN HPA 1021.7 1020.7 1018.4 1015.8 1014.5 1011.1 1009.5 1010.5 1014.8 1019.5 1021.2 1021.6 1016.6 MAX. QNH PRESSURE IN HPA 1041.8 1039.3 1045.2 1036.2 1031.1 1025.0 1019.3 1024.1 1028.2 1036.4 1040.7 1040.9 1045.2 YEAR-DAY 96-10 94-18 90-17 5- 6 3- 1 3- 6 92-12 96-29 93-22 98- 9 87-30 86-10 90-17 MIN. QNH PRESSURE IN HPA 999.9 997.6 997.1 1001.6 999.9 997.1 996.6 998.6 999.1 1001.6 1002.4 995.8 995.8 YEAR-DAY 0-21 99-20 88- 3 97- 5 87-23 95-29 5- 6 4-12 90-14 89- 2 4-18 88-26 88-26 MEAN QFF PRESSURE IN HPA 1021.9 1020.9 1018.6 1016.1 1014.8 1011.4 1009.9 1010.9 1015.2 1019.9 1021.5 1021.9 1016.9 MAX. QFF PRESSURE IN HPA 1042.0 1039.5 1045.3 1036.4 1031.4 1025.3 1019.6 1024.5 1028.5 1036.7 1040.9 1041.1 1045.3 YEAR-DAY 96-10 94-18 90-17 5- 6 3- 1 3- 6 92-12 96-29 93-22 98- 9 87-30 86-10 90-17 MIN. QFF PRESSURE IN HPA 1000.1 997.9 997.3 1001.8 1000.2 997.5 997.0 999.0 999.4 1001.9 1002.7 996.0 996.0 YEAR-DAY 0-21 99-20 88- 3 97- 5 87-23 95-29 5- 6 4-12 90-14 89- 2 4-18 88-26 88-26 PRESSURE AT HOUR 0300 UTC. MEAN QFE PRESSURE IN HPA 1024.1 1023.4 1021.7 1019.0 1017.4 1013.9 1012.7 1013.7 1017.9 1022.4 1024.0 1024.2 1019.5 MAX. QFE PRESSURE IN HPA 1044.8 1041.8 1047.9 1037.6 1033.8 1027.3 1022.2 1026.5 1031.1 1039.5 1043.0 1045.3 1047.9 YEAR-DAY 93- 6 94-18 90-17 5- 6 92- 2 3- 6 93-27 96-29 93-22 98- 9 87-30 3-11 90-17 MIN. QFE PRESSURE IN HPA 1002.9 999.0 997.6 1003.8 1001.6 999.5 1000.0 1001.9 1003.7 1003.8 1006.4 999.3 997.6 YEAR-DAY 4-23 99-20 88- 3 95-19 86- 3 95-29 91- 7 4-12 96- 8 89- 2 92-22 88-26 88- 3 MEAN QNH PRESSURE IN HPA 1021.6 1020.9 1019.2 1016.5 1014.9 1011.4 1010.2 1011.3 1015.4 1020.0 1021.5 1021.7 1017.1 MAX. QNH PRESSURE IN HPA 1042.3 1039.3 1045.4 1035.1 1031.3 1024.8 1019.7 1024.0 1028.6 1037.0 1040.5 1042.8 1045.4 YEAR-DAY 93- 6 94-18 90-17 5- 6 92- 2 3- 6 93-27 96-29 93-22 98- 9 87-30 3-11 90-17 MIN. QNH PRESSURE IN HPA 1000.5 996.6 995.2 1001.4 999.2 997.1 997.6 999.5 1001.3 1001.4 1004.0 996.9 995.2 YEAR-DAY 4-23 99-20 88- 3 95-19 86- 3 95-29 91- 7 4-12 96- 8 89- 2 92-22 88-26 88- 3 MEAN QFF PRESSURE IN HPA 1021.9 1021.1 1019.4 1016.8 1015.3 1011.8 1010.6 1011.7 1015.8 1020.3 1021.8 1022.0 1017.4 MAX. QFF PRESSURE IN HPA 1042.5 1039.5 1045.5 1035.3 1031.6 1025.1 1020.1 1024.4 1028.9 1037.3 1040.7 1043.0 1045.5 YEAR-DAY 93- 6 94-18 90-17 5- 6 3- 1 3- 6 93-27 96-29 93-22 98- 9 87-30 3-11 90-17 MIN. QFF PRESSURE IN HPA 1000.7 996.9 995.4 1001.7 999.5 997.5 998.0 999.9 1001.7 1001.7 1004.3 997.1 995.4 YEAR-DAY 4-23 99-20 88- 3 95-19 86- 3 95-29 91- 7 4-12 96- 8 89- 2 92-22 88-26 88- 3 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ASTARA (40709) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 38 25 N LONGITUDE 48 52 E DATA PROCESSING CENTER ELEVATION -18.0 M CLIMATOLOGICAL NORMALS FOR THE PERIOD 1986-2005 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 0600 UTC. MEAN QFE PRESSURE IN HPA 1025.2 1024.5 1022.7 1019.8 1018.0 1014.3 1013.0 1014.2 1018.6 1023.4 1025.0 1025.2 1020.3 MAX. QFE PRESSURE IN HPA 1045.7 1042.4 1048.8 1038.9 1035.4 1027.2 1023.1 1027.5 1031.6 1040.2 1044.2 1047.4 1048.8 YEAR-DAY 93- 6 94-18 90-17 5- 6 3- 1 3- 6 92-12 96-29 89-22 95-17 87-30 3-11 90-17 MIN. QFE PRESSURE IN HPA 1002.9 1001.0 997.6 1003.4 1001.9 999.1 999.5 1002.9 1004.1 1003.8 1006.6 1002.0 997.6 YEAR-DAY 4-23 99-20 88- 3 95-19 86- 3 95-29 91- 7 4-12 96- 8 89- 2 92-22 88-26 88- 3 MEAN QNH PRESSURE IN HPA 1022.8 1022.0 1020.2 1017.3 1015.5 1011.8 1010.6 1011.8 1016.1 1021.0 1022.6 1022.7 1017.9 MAX. QNH PRESSURE IN HPA 1043.2 1039.9 1046.3 1036.4 1032.9 1024.7 1020.6 1025.0 1029.1 1037.7 1041.7 1044.9 1046.3 YEAR-DAY 93- 6 94-18 90-17 5- 6 3- 1 3- 6 92-12 96-29 89-22 95-17 87-30 3-11 90-17 MIN. QNH PRESSURE IN HPA 1000.5 998.6 995.2 1001.0 999.5 996.7 997.1 1000.5 1001.7 1001.4 1004.2 999.6 995.2 YEAR-DAY 4-23 99-20 88- 3 95-19 86- 3 95-29 91- 7 4-12 96- 8 89- 2 92-22 88-26 88- 3 MEAN QFF PRESSURE IN HPA 1023.1 1022.3 1020.1 1017.5 1015.9 1012.5 1010.9 1012.1 1016.4 1021.3 1022.8 1022.9 1018.1 MAX. QFF PRESSURE IN HPA 1043.4 1040.1 1046.4 1036.6 1033.2 1025.0 1021.0 1025.4 1029.4 1038.0 1041.9 1045.1 1046.4 YEAR-DAY 93- 6 94-18 90-17 5- 6 3- 1 3- 6 96- 3 96-29 89-22 95-17 87-30 3-11 90-17 MIN. QFF PRESSURE IN HPA 1000.7 998.9 995.4 1001.3 1000.1 997.1 997.5 1000.9 1002.1 1001.7 1004.5 999.8 995.4 YEAR-DAY 4-23 99-20 88- 3 95-19 1- 8 95-29 91- 7 4-12 96- 8 89- 2 92-22 88-26 88- 3 PRESSURE AT HOUR 0900 UTC. MEAN QFE PRESSURE IN HPA 1024.4 1023.8 1022.1 1019.3 1017.6 1013.9 1012.6 1013.6 1017.9 1022.6 1024.1 1024.1 1019.7 MAX. QFE PRESSURE IN HPA 1043.9 1042.3 1047.2 1038.3 1034.4 1026.7 1023.2 1027.4 1031.1 1040.4 1043.0 1046.8 1047.2 YEAR-DAY 93- 6 94-18 90-16 5- 5 3- 1 93-22 96- 3 96-29 93-22 95-17 87-29 3-11 90-16 MIN. QFE PRESSURE IN HPA 1001.9 997.4 998.8 1001.8 1001.8 997.6 998.3 1002.4 1003.1 1003.1 1004.5 1001.6 997.4 YEAR-DAY 0-19 99-20 88- 3 97- 5 4-11 95-29 91- 7 4-12 96- 8 89- 2 92-22 86-27 99-20 MEAN QNH PRESSURE IN HPA 1021.9 1021.3 1019.6 1016.8 1015.1 1011.4 1010.1 1011.2 1015.4 1020.2 1021.6 1021.7 1017.2 MAX. QNH PRESSURE IN HPA 1041.4 1039.8 1044.7 1035.8 1031.9 1024.2 1020.7 1024.9 1028.6 1037.9 1040.5 1044.3 1044.7 YEAR-DAY 93- 6 94-18 90-16 5- 5 3- 1 93-22 96- 3 96-29 93-22 95-17 87-29 3-11 90-16 MIN. QNH PRESSURE IN HPA 999.5 995.0 996.4 999.4 999.4 995.2 995.9 1000.0 1000.7 1000.7 1002.1 999.2 995.0 YEAR-DAY 0-19 99-20 88- 3 97- 5 4-11 95-29 91- 7 4-12 96- 8 89- 2 92-22 86-27 99-20 MEAN QFF PRESSURE IN HPA 1022.2 1021.6 1019.5 1017.0 1015.6 1012.0 1010.4 1011.5 1015.7 1020.5 1021.8 1021.8 1017.5 MAX. QFF PRESSURE IN HPA 1041.6 1040.0 1044.9 1036.0 1032.2 1024.6 1021.1 1025.3 1028.9 1038.2 1040.7 1044.5 1044.9 YEAR-DAY 93- 6 94-18 90-16 5- 5 3- 1 93-22 96- 3 96-29 93-22 95-17 87-29 3-11 90-16 MIN. QFF PRESSURE IN HPA 999.7 995.3 996.6 999.6 999.7 995.6 996.3 1000.4 1001.1 1001.0 1002.4 999.5 995.3 YEAR-DAY 0-19 99-20 88- 3 97- 5 4-11 95-29 91- 7 4-12 96- 8 89- 2 92-22 86-27 99-20 PRESSURE AT HOUR 1200 UTC. MEAN QFE PRESSURE IN HPA 1023.5 1022.8 1021.1 1018.4 1016.8 1013.0 1011.7 1012.6 1016.9 1021.8 1023.4 1023.5 1018.8 MAX. QFE PRESSURE IN HPA 1042.9 1040.4 1047.7 1038.3 1033.4 1025.7 1022.3 1026.8 1030.2 1039.6 1042.3 1046.0 1047.7 YEAR-DAY 93- 6 98-22 90-16 5- 5 92- 2 96-11 96- 3 96-29 92-29 95-17 87-29 3-11 90-16 MIN. QFE PRESSURE IN HPA 1000.8 998.4 1000.0 998.7 998.4 995.2 996.8 1001.3 1002.1 1004.2 1004.0 1000.5 995.2 YEAR-DAY 4-23 99-20 88- 3 97- 5 4-11 95-29 91- 7 4-12 96- 8 98- 1 92-22 86-27 95-29 MEAN QNH PRESSURE IN HPA 1021.0 1020.3 1018.6 1015.9 1014.3 1010.6 1009.2 1010.2 1014.4 1019.3 1021.0 1021.0 1016.3 MAX. QNH PRESSURE IN HPA 1040.4 1037.9 1045.2 1035.8 1030.9 1023.2 1019.8 1024.3 1027.7 1037.1 1039.8 1043.5 1045.2 YEAR-DAY 93- 6 98-22 90-16 5- 5 92- 2 96-11 96- 3 96-29 92-29 95-17 87-29 3-11 90-16 MIN. QNH PRESSURE I