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