STATION OMIDIYEH (PAYGAH) (40830) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 30 46 N LONGITUDE 49 39 E DATA PROCESSING CENTER ELEVATION 34.9 M MEANS AND EXTREMES FOR THE YEAR 1983 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AIR TEMPERATURE (C) 10.8 14.3 17.7 25.3 34.5 38.3 40.4 38.1 34.1 27.3 21.9 13.9 26.4 MINIMUN AIR TEMPERATURE (C) 4.4 5.6 8.5 15.2 22.5 24.5 26.6 26.2 20.8 14.7 12.5 7.6 15.8 DAYS WITH MINIMUM TEMP. >=21 0 0 0 0 22 30 31 31 16 0 0 0 130 DAYS WITH MINIMUM TEMP. <=-4 0 0 0 0 0 0 0 0 0 0 0 0 0 DAYS WITH FREEZING MIN.<= 0 2 1 0 0 0 0 0 0 0 0 0 0 3 TEMPERATURE RECORDS LOWEST(C) -0.8 0.0 2.0 11.0 17.4 21.6 23.2 21.0 16.2 12.0 9.4 1.4 -0.8 DAY 29 24 10 2 1 9 1 27 29 20 3 23 MAXIMUM AIR TEMPERATURE (C) 15.0 19.6 23.0 30.6 40.0 45.2 47.5 44.9 41.6 34.7 29.2 20.9 32.7 DAYS WITH MAXIMUM TEMP. >=30 0 0 0 20 31 30 31 31 29 31 10 0 213 DAYS WITH MAXIMUM TEMP. <= 0 0 0 0 0 0 0 0 0 0 0 0 0 0 TEMPERATURE RECORDS HIGHEST(C) 23.2 24.6 28.4 36.2 43.6 48.0 51.0 49.0 45.0 40.6 33.8 28.6 51.0 DAY 1 26 27 30 24 18 12 17 8 1 1 10 DIF. BETWEEN (MAX.-MIN.) (C) 10.6 14.0 14.5 15.4 17.5 20.7 20.9 18.7 20.8 20.0 16.7 13.3 16.9 MEAN DAILY TEMP. (MDT) (C) 9.7 12.6 15.8 22.9 31.2 34.8 37.0 35.5 31.2 24.7 20.8 14.3 24.2 COOLING DEG. DAYS(BASE 21 0C) 0.0 0.0 0.3 68.9 317.7 415.2 496.6 450.4 296.1 114.4 18.0 0.7 2178.3 HEATING DEG. DAYS(BASE 18 0C) 257.9 151.8 82.8 0.1 0.0 0.0 0.0 0.0 0.0 0.0 0.0 132.7 625.2 DEWPOINT (MEAN C) 6.6 8.3 7.3 15.3 14.4 13.1 14.6 17.4 14.7 5.9 9.8 7.6 11.2 MIXING RATIO (G/KG) 6.21 6.93 6.73 11.36 10.77 9.87 11.31 13.57 11.30 6.17 7.76 6.76 9.06 VAPOUR PRESSURE (HPA) 10.06 11.17 10.83 18.07 17.07 15.60 17.70 21.19 17.81 9.90 12.50 10.92 14.40 SATURATION DEF. (HPA) 3.36 5.91 10.55 15.84 40.33 55.97 62.53 49.42 39.37 29.15 15.32 6.08 27.82 RELATIVE HUMIDITY (MEAN %) 77 69 55 58 33 25 26 33 34 29 50 68 46 RELATIVE HUMIDITY (MAX. %) 92 87 78 79 54 41 43 51 50 46 67 85 64 RELATIVE HUMIDITY (MIN. %) 63 54 39 44 23 16 16 22 25 18 33 47 33 RELATIVE HUMIDITY (MEAN% 03UTC) 90 86 77 79 53 41 43 51 49 45 65 81 63 RELATIVE HUMIDITY (MEAN% 09UTC) 70 63 46 49 26 19 20 27 27 22 37 57 39 RELATIVE HUMIDITY (MEAN% 15UTC) 74 62 45 53 29 19 19 27 32 24 44 61 41 RH=0 => RELATIVE HUMIDITY < 0.5% AMOUNT OF PRECIPITATION MM. 73.3 16.0 46.3 18.0 1.3 0.0 0.0 0.0 0.0 0.0 3.2 26.5 184.6 DAYS WITH PRECIPITATION >=10 4 0 2 0 0 0 0 0 0 0 0 2 8 DAYS WITH PRECIPITATION >= 5 6 3 2 1 0 0 0 0 0 0 0 2 14 DAYS WITH PRECIPITATION >= 1 6 3 7 4 0 0 0 0 0 0 2 3 25 DAYS WITH PRECIPITATION 6 3 8 6 2 0 0 0 0 0 3 6 34 GREATEST DAILY PRECIPITATION 25.0 6.0 18.0 8.0 0.8 0.0 0.0 0.0 0.0 0.0 2.0 12.0 25.0 DAY 9 5 16 6 24 ** ** ** ** ** 29 27 DAY WITH THUNDER STORM 1 0 0 2 0 0 0 0 0 0 1 3 7 DAYS WITH SNOW OR SLEET 0 0 0 0 0 0 0 0 0 0 0 0 0 DAYS WITH DUST 2 6 2 2 15 21 16 22 12 4 8 0 110 WIND DIRECTION (PREVAILING) 315 315 135 270 315 270 270 270 270 270 135 270 270 PREVAILING WIND SPEED(KNOTS) 9.1 11.5 12.6 9.8 12.5 13.0 12.4 11.9 9.3 9.3 11.8 8.3 10.5 PREVAILING WIND PERCENT 23.9 17.1 18.7 20.0 21.3 35.3 36.1 31.6 30.7 31.0 13.6 15.3 22.4 CALMS PERCENT OF WIND 38.1 40.7 29.7 30.7 25.2 14.7 20.6 24.5 33.3 39.4 48.3 59.3 35.1 NO. OF WIND OBSERVATION 155 140 155 150 155 150 155 155 150 155 176 248 1944 VECTOR WIND DIRECTION (MEAN) 272 200 202 260 271 280 272 239 268 274 204 271 263 VECTOR WIND MAGNITUDE(KNOTS) 2.2 1.0 1.8 2.5 3.0 8.4 6.6 4.9 4.2 4.1 0.9 1.4 3.2 WIND STEADINESES (MEAN %) 36.1 16.1 23.1 33.8 35.3 83.2 71.0 58.3 66.7 75.9 18.0 40.0 45.7 WIND SPEED (MEAN KNOTS) 6.1 6.2 7.8 7.4 8.5 10.1 9.3 8.4 6.3 5.4 5.0 3.5 7.0 FASTEST WIND DIRECTION 160 140 160 130 260 280 280 290 300 320 160 60 260 FASTEST WIND SPEED (KNOTS) 39 35 45 31 58 39 31 43 33 25 39 27 58 DAY 24 16 5 18 6 28 21 25 27 17 13 26 DAYS WITH SKY CLEAR (0-2)/8 12 16 19 15 15 27 31 29 30 31 21 17 263 DAYS WITH P.CLOUDY (3-6)/8 6 7 7 12 11 2 0 2 0 0 6 10 63 DAYS WITH CLOUDY (7-8)/8 13 5 5 3 5 1 0 0 0 0 3 4 39 DAYS WITH VISIBILITY =< 2 KM 7 3 1 1 3 3 4 7 0 0 1 3 33 DURATION OF SUNSHINE HOURS ****** ****** 0.0 0.0 0.0 ****** ****** 0.0 0.0 0.0 0.0 0.0 ****** ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION OMIDIYEH (PAYGAH) (40830) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 30 46 N LONGITUDE 49 39 E DATA PROCESSING CENTER ELEVATION 34.9 M MEANS AND EXTREMES FOR THE YEAR 1983 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL MEAN QFE PRESSURE IN HPA 1018.6 1015.1 1013.3 1009.1 1004.1 999.2 994.7 995.5 1000.9 1009.9 1015.4 1016.8 1007.7 MAX. QFE PRESSURE IN HPA 1026.1 1024.8 1023.0 1015.9 1008.9 1006.2 999.3 1001.9 1007.4 1019.0 1019.9 1021.7 1026.1 DAY-HOUR 10- 9 23- 6 1- 6 20- 6 6- 9 1- 6 1- 6 31- 3 30- 6 28- 6 28- 6 5- 6 MIN. QFE PRESSURE IN HPA 1007.2 1005.8 1004.5 1004.4 997.7 993.2 989.4 989.6 996.1 1003.8 1007.4 1009.4 989.4 DAY-HOUR 24- 3 17-12 15-15 10-15 29-15 28-15 20-15 10-15 7-15 2-12 11-12 11-15 MEAN QNH PRESSURE IN HPA 1022.5 1019.0 1017.2 1012.9 1008.0 1003.1 998.5 999.3 1004.8 1013.8 1019.3 1020.7 1011.6 MAX. QNH PRESSURE IN HPA 1030.0 1028.7 1026.9 1019.8 1012.8 1010.1 1003.2 1005.8 1011.3 1022.9 1023.8 1025.6 1030.0 DAY-HOUR 10- 9 23- 6 1- 6 20- 6 6- 9 1- 6 1- 6 31- 3 30- 6 28- 6 28- 6 5- 6 MIN. QNH PRESSURE IN HPA 1011.1 1009.7 1008.4 1008.3 1001.5 997.0 993.2 993.4 999.9 1007.7 1011.3 1013.3 993.2 DAY-HOUR 24- 3 17-12 15-15 10-15 29-15 28-15 20-15 10-15 7-15 2-12 11-12 11-15 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1021.0 ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1025.9 ****** DAY-HOUR **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** 5- 6 MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1013.4 ****** DAY-HOUR **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** 11-21 PRESSURE AT HOUR 0000 UTC. MEAN QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1016.7 ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1019.8 ****** DAY ** ** ** ** ** ** ** ** ** ** ** 5 MIN. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1010.9 ****** DAY ** ** ** ** ** ** ** ** ** ** ** 12 MEAN QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1020.6 ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1023.7 ****** DAY ** ** ** ** ** ** ** ** ** ** ** 5 MIN. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1014.8 ****** DAY ** ** ** ** ** ** ** ** ** ** ** 12 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1020.9 ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1023.9 ****** DAY ** ** ** ** ** ** ** ** ** ** ** 5 MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1015.0 ****** DAY ** ** ** ** ** ** ** ** ** ** ** 12 PRESSURE AT HOUR 0300 UTC. MEAN QFE PRESSURE IN HPA 1018.5 1015.2 1013.4 1009.0 1004.2 999.6 995.1 996.1 1000.8 1009.7 1015.2 1017.0 1007.8 MAX. QFE PRESSURE IN HPA 1024.8 1023.6 1022.3 1014.3 1007.9 1004.6 999.0 1001.9 1005.9 1017.9 1019.0 1020.3 1024.8 DAY 11 23 1 20 9 1 1 31 30 28 28 6 MIN. QFE PRESSURE IN HPA 1007.2 1007.3 1005.0 1005.9 998.9 994.9 991.4 992.8 997.0 1004.9 1009.2 1011.6 991.4 DAY 24 17 6 10 29 28 21 3 7 3 12 27 MEAN QNH PRESSURE IN HPA 1022.4 1019.1 1017.3 1012.9 1008.1 1003.5 998.9 999.9 1004.7 1013.6 1019.1 1020.9 1011.7 MAX. QNH PRESSURE IN HPA 1028.7 1027.5 1026.2 1018.2 1011.8 1008.5 1002.9 1005.8 1009.8 1021.8 1022.9 1024.2 1028.7 DAY 11 23 1 20 9 1 1 31 30 28 28 6 MIN. QNH PRESSURE IN HPA 1011.1 1011.2 1008.9 1009.8 1002.8 998.7 995.2 996.6 1000.8 1008.8 1013.1 1015.5 995.2 DAY 24 17 6 10 29 28 21 3 7 3 12 27 MEAN QFF PRESSURE IN HPA 1022.9 1019.4 1017.6 1013.1 1008.1 1003.5 998.9 999.9 1004.9 1013.8 1019.4 1021.2 1011.9 MAX. QFF PRESSURE IN HPA 1029.2 1027.9 1026.6 1018.3 1011.8 1008.5 1002.9 1005.8 1009.9 1022.0 1023.1 1024.5 1029.2 DAY 11 23 1 20 9 1 1 31 30 28 28 6 MIN. QFF PRESSURE IN HPA 1011.3 1011.5 1009.1 1009.9 1002.8 998.8 995.2 996.6 1000.9 1008.8 1013.2 1015.8 995.2 DAY 24 17 6 10 29 28 21 3 7 3 12 27 ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION OMIDIYEH (PAYGAH) (40830) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 30 46 N LONGITUDE 49 39 E DATA PROCESSING CENTER ELEVATION 34.9 M MEANS AND EXTREMES FOR THE YEAR 1983 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 0600 UTC. MEAN QFE PRESSURE IN HPA 1019.8 1016.4 1014.4 1010.2 1005.2 1000.2 995.7 996.7 1002.1 1011.3 1016.5 1018.3 1008.9 MAX. QFE PRESSURE IN HPA 1025.9 1024.8 1023.0 1015.9 1008.6 1006.2 999.3 1001.7 1007.4 1019.0 1019.9 1021.7 1025.9 DAY 10 23 1 20 4 1 1 31 30 28 28 5 MIN. QFE PRESSURE IN HPA 1009.5 1007.9 1005.0 1007.0 998.3 995.5 992.3 993.7 997.2 1006.3 1010.1 1012.5 992.3 DAY 24 17 5 10 13 28 3 3 7 3 12 27 MEAN QNH PRESSURE IN HPA 1023.7 1020.3 1018.3 1014.1 1009.1 1004.1 999.5 1000.5 1005.9 1015.2 1020.5 1022.2 1012.8 MAX. QNH PRESSURE IN HPA 1029.8 1028.7 1026.9 1019.8 1012.5 1010.1 1003.2 1005.6 1011.3 1022.9 1023.8 1025.6 1029.8 DAY 10 23 1 20 4 1 1 31 30 28 28 5 MIN. QNH PRESSURE IN HPA 1013.4 1011.8 1008.9 1010.9 1002.1 999.3 996.1 997.5 1001.0 1010.2 1014.0 1016.4 996.1 DAY 24 17 5 10 13 28 3 3 7 3 12 27 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1022.5 ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1025.9 ****** DAY ** ** ** ** ** ** ** ** ** ** ** 5 MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1016.7 ****** DAY ** ** ** ** ** ** ** ** ** ** ** 27 PRESSURE AT HOUR 0900 UTC. MEAN QFE PRESSURE IN HPA 1019.1 1015.9 1014.1 1010.0 1004.9 999.9 995.4 996.1 1001.8 1010.7 1015.7 1017.4 1008.4 MAX. QFE PRESSURE IN HPA 1026.1 1023.2 1022.6 1015.5 1008.9 1005.6 998.9 1001.6 1007.2 1017.9 1019.2 1021.7 1026.1 DAY 10 23 1 20 6 1 1 31 30 28 1 5 MIN. QFE PRESSURE IN HPA 1009.4 1007.3 1004.7 1006.6 998.3 995.0 991.7 992.8 997.4 1005.9 1009.1 1012.3 991.7 DAY 24 17 5 24 13 28 21 3 7 13 12 27 MEAN QNH PRESSURE IN HPA 1023.1 1019.8 1018.0 1013.9 1008.8 1003.8 999.2 1000.0 1005.6 1014.6 1019.6 1021.3 1012.3 MAX. QNH PRESSURE IN HPA 1030.0 1027.1 1026.5 1019.4 1012.8 1009.5 1002.8 1005.5 1011.1 1021.8 1023.1 1025.6 1030.0 DAY 10 23 1 20 6 1 1 31 30 28 1 5 MIN. QNH PRESSURE IN HPA 1013.3 1011.2 1008.6 1010.5 1002.1 998.8 995.5 996.6 1001.2 1009.8 1013.0 1016.2 995.5 DAY 24 17 5 24 13 28 21 3 7 13 12 27 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1021.6 ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1025.8 ****** DAY ** ** ** ** ** ** ** ** ** ** ** 5 MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1016.5 ****** DAY ** ** ** ** ** ** ** ** ** ** ** 27 PRESSURE AT HOUR 1200 UTC. MEAN QFE PRESSURE IN HPA 1017.7 1014.1 1012.4 1008.2 1003.4 998.5 993.9 994.5 1000.1 1008.8 1013.9 1015.8 1006.8 MAX. QFE PRESSURE IN HPA 1024.2 1020.9 1020.2 1013.8 1008.1 1003.8 997.8 1000.1 1005.8 1016.2 1017.7 1019.8 1024.2 DAY 10 22 1 20 16 4 10 31 30 28 1 5 MIN. QFE PRESSURE IN HPA 1009.7 1005.8 1005.6 1005.0 997.9 993.5 990.1 990.9 996.2 1003.8 1007.4 1011.2 990.1 DAY 24 17 5 9 13 28 20 2 7 2 11 11 MEAN QNH PRESSURE IN HPA 1021.6 1018.0 1016.3 1012.1 1007.3 1002.4 997.8 998.3 1003.9 1012.7 1017.8 1019.7 1010.7 MAX. QNH PRESSURE IN HPA 1028.1 1024.8 1024.1 1017.7 1012.0 1007.7 1001.6 1004.0 1009.7 1020.1 1021.6 1023.7 1028.1 DAY 10 22 1 20 16 4 10 31 30 28 1 5 MIN. QNH PRESSURE IN HPA 1013.6 1009.7 1009.5 1008.9 1001.7 997.3 993.9 994.7 1000.0 1007.7 1011.3 1015.1 993.9 DAY 24 17 5 9 13 28 20 2 7 2 11 11 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1020.0 ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1023.9 ****** DAY ** ** ** ** ** ** ** ** ** ** ** 5 MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1015.3 ****** DAY ** ** ** ** ** ** ** ** ** ** ** 11 ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION OMIDIYEH (PAYGAH) (40830) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 30 46 N LONGITUDE 49 39 E DATA PROCESSING CENTER ELEVATION 34.9 M MEANS AND EXTREMES FOR THE YEAR 1983 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 1500 UTC. MEAN QFE PRESSURE IN HPA 1018.1 1014.1 1012.2 1008.0 1002.8 998.0 993.4 994.0 1000.0 1009.0 1014.1 1016.1 1006.6 MAX. QFE PRESSURE IN HPA 1024.4 1021.6 1019.6 1013.2 1007.5 1002.6 997.9 999.7 1006.5 1016.1 1018.0 1020.4 1024.4 DAY 10 22 1 20 6 4 10 31 30 28 28 5 MIN. QFE PRESSURE IN HPA 1011.2 1005.8 1004.5 1004.4 997.7 993.2 989.4 989.6 996.1 1004.1 1007.5 1009.4 989.4 DAY 1 17 15 10 29 28 20 10 7 2 12 11 MEAN QNH PRESSURE IN HPA 1022.1 1018.0 1016.1 1011.8 1006.7 1001.8 997.2 997.9 1003.8 1012.9 1018.0 1020.0 1010.5 MAX. QNH PRESSURE IN HPA 1028.3 1025.5 1023.5 1017.1 1011.4 1006.5 1001.7 1003.6 1010.4 1020.0 1021.9 1024.3 1028.3 DAY 10 22 1 20 6 4 10 31 30 28 28 5 MIN. QNH PRESSURE IN HPA 1015.1 1009.7 1008.4 1008.3 1001.5 997.0 993.2 993.4 999.9 1008.0 1011.4 1013.3 993.2 DAY 1 17 15 10 29 28 20 10 7 2 12 11 MEAN QFF PRESSURE IN HPA 1022.4 1018.4 1016.4 1012.0 1006.7 1001.8 997.2 997.8 1004.0 1013.0 1018.2 1020.3 1010.7 MAX. QFF PRESSURE IN HPA 1028.7 1025.9 1023.9 1017.2 1011.4 1006.4 1001.7 1003.6 1010.5 1020.2 1022.1 1024.6 1028.7 DAY 10 22 1 20 6 4 10 31 30 28 28 5 MIN. QFF PRESSURE IN HPA 1015.3 1010.0 1008.6 1008.4 1001.6 997.0 993.1 993.4 1000.2 1008.1 1011.5 1013.5 993.1 DAY 1 17 15 10 29 28 20 10 6 2 12 11 PRESSURE AT HOUR 1800 UTC. MEAN QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1016.7 ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1020.5 ****** DAY ** ** ** ** ** ** ** ** ** ** ** 5 MIN. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1009.6 ****** DAY ** ** ** ** ** ** ** ** ** ** ** 11 MEAN QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1020.7 ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1024.4 ****** DAY ** ** ** ** ** ** ** ** ** ** ** 5 MIN. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1013.5 ****** DAY ** ** ** ** ** ** ** ** ** ** ** 11 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1021.0 ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1024.7 ****** DAY ** ** ** ** ** ** ** ** ** ** ** 5 MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1013.7 ****** DAY ** ** ** ** ** ** ** ** ** ** ** 11 PRESSURE AT HOUR 2100 UTC. MEAN QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1016.7 ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1020.1 ****** DAY ** ** ** ** ** ** ** ** ** ** ** 24 MIN. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1009.4 ****** DAY ** ** ** ** ** ** ** ** ** ** ** 11 MEAN QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1020.6 ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1024.0 ****** DAY ** ** ** ** ** ** ** ** ** ** ** 24 MIN. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1013.3 ****** DAY ** ** ** ** ** ** ** ** ** ** ** 11 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1020.9 ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1024.4 ****** DAY ** ** ** ** ** ** ** ** ** ** ** 24 MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1013.4 ****** DAY ** ** ** ** ** ** ** ** ** ** ** 11 ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION OMIDIYEH (PAYGAH) (40830) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 30 46 N LONGITUDE 49 39 E DATA PROCESSING CENTER ELEVATION 34.9 M MEANS AND EXTREMES FOR THE YEAR 1984 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AIR TEMPERATURE (C) 12.0 15.3 19.8 25.9 29.5 34.8 37.8 34.2 32.0 25.1 19.4 11.9 24.8 MINIMUN AIR TEMPERATURE (C) 6.9 8.9 13.5 18.3 21.3 25.5 29.5 25.5 23.1 17.0 15.0 7.3 17.7 DAYS WITH MINIMUM TEMP. >=21 0 0 0 5 21 30 31 31 29 7 0 0 154 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) 2.4 3.4 7.0 13.4 13.6 21.0 26.2 22.2 20.0 7.0 8.8 2.0 2.0 DAY 24 1 1 1 2 1 15 27 14 21 21 11 MAXIMUM AIR TEMPERATURE (C) 18.2 22.4 26.3 33.1 36.6 44.2 46.1 42.9 41.6 34.0 25.1 17.6 32.3 DAYS WITH MAXIMUM TEMP. >=30 0 0 7 26 30 30 31 31 30 25 3 0 213 DAYS WITH MAXIMUM TEMP. <= 0 0 0 0 0 0 0 0 0 0 0 0 0 0 TEMPERATURE RECORDS HIGHEST(C) 24.0 26.0 36.4 38.0 43.0 49.0 48.2 46.8 45.2 40.2 31.6 24.4 49.0 DAY 14 12 10 20 28 11 30 6 5 1 2 3 DIF. BETWEEN (MAX.-MIN.) (C) 11.3 13.5 12.8 14.8 15.3 18.7 16.6 17.4 18.5 17.0 10.1 10.3 14.6 MEAN DAILY TEMP. (MDT) (C) 12.6 15.6 19.9 25.7 29.0 34.9 37.8 34.2 32.3 25.5 20.1 12.5 25.0 COOLING DEG. DAYS(BASE 21 0C) 0.0 0.6 24.1 141.9 246.7 415.9 521.5 409.6 339.8 160.1 23.0 0.0 2283.2 HEATING DEG. DAYS(BASE 18 0C) 168.8 75.3 13.1 0.0 0.0 0.0 0.0 0.0 0.0 4.3 13.2 172.2 446.9 DEWPOINT (MEAN C) 6.2 3.1 8.0 10.2 13.6 15.0 15.5 13.5 13.2 7.6 13.1 6.5 10.5 MIXING RATIO (G/KG) 6.00 5.04 7.23 8.49 10.76 11.78 11.97 10.96 10.21 7.11 9.51 6.23 8.77 VAPOUR PRESSURE (HPA) 9.69 8.15 11.59 13.52 17.02 18.42 18.72 17.15 16.15 11.38 15.28 10.06 13.93 SATURATION DEF. (HPA) 4.88 10.03 12.64 21.66 26.25 40.78 49.76 39.22 34.08 23.15 7.94 4.40 22.90 RELATIVE HUMIDITY (MEAN %) 71 49 52 41 43 33 30 32 37 35 70 72 47 RELATIVE HUMIDITY (MAX. %) 87 69 70 59 55 47 46 46 57 52 86 86 63 RELATIVE HUMIDITY (MIN. %) 49 25 33 25 31 20 17 21 18 20 48 50 30 RELATIVE HUMIDITY (MEAN% 03UTC) 83 66 66 57 53 44 43 42 53 48 82 83 60 RELATIVE HUMIDITY (MEAN% 09UTC) 61 36 40 30 35 25 23 26 25 26 55 63 37 RELATIVE HUMIDITY (MEAN% 15UTC) 64 37 44 32 37 25 20 26 26 27 67 66 39 RH=0 => RELATIVE HUMIDITY < 0.5% AMOUNT OF PRECIPITATION MM. 39.2 0.1 93.7 0.7 1.5 0.0 0.0 0.0 0.0 0.0 63.8 21.4 220.4 DAYS WITH PRECIPITATION >=10 0 0 3 0 0 0 0 0 0 0 3 0 6 DAYS WITH PRECIPITATION >= 5 4 0 5 0 0 0 0 0 0 0 5 2 16 DAYS WITH PRECIPITATION >= 1 6 0 6 0 1 0 0 0 0 0 7 6 26 DAYS WITH PRECIPITATION 8 2 7 2 2 0 0 0 0 1 9 8 39 GREATEST DAILY PRECIPITATION 9.0 0.1 35.0 0.6 1.0 0.0 0.0 0.0 0.0 0.0 20.3 8.8 35.0 DAY 16 8 20 17 8 ** ** ** ** ** 10 27 DAY WITH THUNDER STORM 2 1 8 3 2 0 0 0 1 0 8 6 31 DAYS WITH SNOW OR SLEET 0 0 0 0 0 0 0 0 0 0 0 0 0 DAYS WITH DUST 2 13 13 16 23 26 31 31 17 15 4 4 195 WIND DIRECTION (PREVAILING) 270 135 270 315 270 270 270 270 270 270 270 270 270 PREVAILING WIND SPEED(KNOTS) 6.9 13.5 9.5 12.2 11.1 11.8 11.7 11.8 10.6 9.0 8.8 8.2 10.6 PREVAILING WIND PERCENT 12.9 19.8 17.3 28.8 28.2 53.3 43.5 58.9 20.8 18.5 13.8 21.8 27.4 CALMS PERCENT OF WIND 56.5 32.3 30.2 22.9 25.0 17.9 11.7 13.7 32.1 39.5 48.8 54.8 32.1 NO. OF WIND OBSERVATION 248 232 248 240 248 240 248 248 240 248 240 248 2928 VECTOR WIND DIRECTION (MEAN) 258 201 293 285 280 275 262 273 229 212 277 280 268 VECTOR WIND MAGNITUDE(KNOTS) 1.0 1.7 1.0 4.3 4.3 8.4 6.1 8.3 2.4 1.3 0.5 1.7 3.2 WIND STEADINESES (MEAN %) 27.8 23.6 13.3 48.9 53.1 89.4 61.0 88.3 38.1 23.6 10.2 43.6 45.1 WIND SPEED (MEAN KNOTS) 3.6 7.2 7.5 8.8 8.1 9.4 10.0 9.4 6.3 5.5 4.9 3.9 7.1 FASTEST WIND DIRECTION 210 130 360 300 160 320 230 280 120 290 330 110 130 FASTEST WIND SPEED (KNOTS) 23 39 39 35 39 33 35 39 29 39 39 29 39 DAY 16 23 15 11 4 5 8 8 8 19 11 3 DAYS WITH SKY CLEAR (0-2)/8 13 18 8 17 18 30 24 30 29 29 9 15 240 DAYS WITH P.CLOUDY (3-6)/8 13 10 10 9 8 0 7 0 1 1 14 10 83 DAYS WITH CLOUDY (7-8)/8 5 1 13 4 5 0 0 0 0 1 7 6 42 DAYS WITH VISIBILITY =< 2 KM 5 3 3 7 3 14 15 12 0 4 2 2 70 DURATION OF SUNSHINE HOURS ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION OMIDIYEH (PAYGAH) (40830) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 30 46 N LONGITUDE 49 39 E DATA PROCESSING CENTER ELEVATION 34.9 M MEANS AND EXTREMES FOR THE YEAR 1984 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL MEAN QFE PRESSURE IN HPA 1015.8 1015.3 1010.9 1007.6 1004.0 995.7 994.1 995.8 1002.3 1010.9 1014.7 1016.6 1007.0 MAX. QFE PRESSURE IN HPA 1022.3 1020.5 1020.3 1014.4 1011.1 1004.1 999.2 999.8 1008.4 1021.7 1021.0 1022.9 1022.9 DAY-HOUR 5- 3 20- 9 1- 6 13- 6 2- 6 1- 6 31-21 24- 6 22- 6 20- 6 26- 6 18- 6 MIN. QFE PRESSURE IN HPA 1003.5 1007.3 1001.6 1000.7 997.0 990.0 990.1 991.2 994.1 1003.8 1008.3 1009.5 990.0 DAY-HOUR 16-18 8- 3 26- 0 16-15 28-15 16-15 20-15 5-15 1-15 8-12 11-15 3-12 MEAN QNH PRESSURE IN HPA 1019.7 1019.2 1014.8 1011.5 1007.9 999.5 998.0 999.6 1006.2 1014.7 1018.6 1020.5 1010.8 MAX. QNH PRESSURE IN HPA 1026.2 1024.4 1024.2 1018.3 1015.0 1008.0 1003.1 1003.7 1012.3 1025.6 1024.9 1026.8 1026.8 DAY-HOUR 5- 3 20- 9 1- 6 13- 6 2- 6 1- 6 31-21 24- 6 22- 6 20- 6 26- 6 18- 6 MIN. QNH PRESSURE IN HPA 1007.4 1011.2 1005.5 1004.6 1000.8 993.8 993.9 995.0 997.9 1007.7 1012.2 1013.4 993.8 DAY-HOUR 16-18 8- 3 26- 0 16-15 28-15 16-15 20-15 5-15 1-15 8-12 11-15 3-12 MEAN QFF PRESSURE IN HPA 1020.0 1019.5 1015.0 1011.6 1008.0 999.5 997.9 999.6 1006.2 1014.9 1018.8 1020.9 1011.0 MAX. QFF PRESSURE IN HPA 1026.6 1024.7 1024.6 1018.5 1015.2 1008.0 1003.0 1003.7 1012.3 1025.9 1025.1 1027.2 1027.2 DAY-HOUR 5- 3 20- 9 1- 6 13- 6 2- 6 1- 6 31-21 24- 6 22- 6 20- 6 26- 6 18- 6 MIN. QFF PRESSURE IN HPA 1007.6 1011.4 1005.6 1004.7 1000.9 993.8 993.9 995.0 998.0 1007.7 1012.4 1013.6 993.8 DAY-HOUR 16-18 8- 3 26- 0 16-15 28-15 16-15 20-15 5-15 1-15 8-12 11-15 3-12 PRESSURE AT HOUR 0000 UTC. MEAN QFE PRESSURE IN HPA 1015.6 1015.1 1010.7 1007.6 1004.0 995.7 994.2 995.8 1002.0 1010.5 1014.4 1016.5 1006.8 MAX. QFE PRESSURE IN HPA 1021.7 1018.4 1018.5 1013.4 1009.7 1002.7 996.5 998.5 1007.3 1020.0 1019.1 1021.7 1021.7 DAY 5 3 2 14 2 1 26 25 22 21 27 18 MIN. QFE PRESSURE IN HPA 1006.8 1007.5 1001.6 1002.6 998.7 991.5 991.5 992.2 995.7 1005.1 1010.1 1011.5 991.5 DAY 17 8 26 9 29 17 21 6 2 17 12 28 MEAN QNH PRESSURE IN HPA 1019.5 1019.0 1014.6 1011.5 1007.8 999.6 998.0 999.7 1005.9 1014.4 1018.3 1020.4 1010.7 MAX. QNH PRESSURE IN HPA 1025.6 1022.3 1022.4 1017.3 1013.6 1006.6 1000.3 1002.3 1011.2 1023.9 1023.0 1025.6 1025.6 DAY 5 3 2 14 2 1 26 25 22 21 27 18 MIN. QNH PRESSURE IN HPA 1010.7 1011.4 1005.5 1006.5 1002.6 995.3 995.3 996.0 999.5 1009.0 1014.0 1015.4 995.3 DAY 17 8 26 9 29 17 21 6 2 17 12 28 MEAN QFF PRESSURE IN HPA 1019.8 1019.3 1014.8 1011.6 1007.9 999.5 998.0 999.7 1005.9 1014.5 1018.5 1020.7 1010.8 MAX. QFF PRESSURE IN HPA 1025.9 1022.6 1022.7 1017.4 1013.7 1006.6 1000.3 1002.3 1011.2 1024.2 1023.2 1026.0 1026.0 DAY 5 3 2 14 2 1 26 25 22 21 27 18 MIN. QFF PRESSURE IN HPA 1010.9 1011.6 1005.6 1006.5 1002.6 995.3 995.3 996.0 999.5 1009.1 1014.2 1015.6 995.3 DAY 17 8 26 9 29 17 21 6 2 17 12 28 PRESSURE AT HOUR 0300 UTC. MEAN QFE PRESSURE IN HPA 1015.7 1015.2 1010.9 1007.8 1004.0 996.1 994.6 996.2 1002.4 1010.7 1014.5 1016.4 1007.0 MAX. QFE PRESSURE IN HPA 1022.3 1018.6 1018.2 1013.6 1010.1 1003.6 997.3 999.0 1007.4 1019.0 1019.4 1021.4 1022.3 DAY 5 21 1 13 2 1 26 24 29 20 26 18 MIN. QFE PRESSURE IN HPA 1010.0 1007.3 1001.8 1002.8 999.0 991.8 992.4 992.5 996.0 1004.7 1010.1 1011.3 991.8 DAY 16 8 26 9 29 17 21 6 1 19 9 28 MEAN QNH PRESSURE IN HPA 1019.6 1019.1 1014.8 1011.7 1007.8 999.9 998.4 1000.0 1006.3 1014.6 1018.4 1020.3 1010.9 MAX. QNH PRESSURE IN HPA 1026.2 1022.5 1022.1 1017.5 1014.0 1007.5 1001.1 1002.9 1011.3 1022.9 1023.3 1025.3 1026.2 DAY 5 21 1 13 2 1 26 24 29 20 26 18 MIN. QNH PRESSURE IN HPA 1013.9 1011.2 1005.7 1006.7 1002.9 995.6 996.2 996.3 999.8 1008.6 1014.0 1015.2 995.6 DAY 16 8 26 9 29 17 21 6 1 19 9 28 MEAN QFF PRESSURE IN HPA 1019.9 1019.4 1015.0 1011.8 1007.9 999.9 998.4 1000.0 1006.3 1014.8 1018.6 1020.7 1011.1 MAX. QFF PRESSURE IN HPA 1026.6 1022.8 1022.4 1017.7 1014.2 1007.6 1001.1 1002.9 1011.4 1023.2 1023.5 1025.7 1026.6 DAY 5 1 1 13 2 1 26 24 29 20 26 18 MIN. QFF PRESSURE IN HPA 1014.1 1011.4 1005.8 1006.8 1002.9 995.6 996.2 996.3 999.9 1008.7 1014.2 1015.5 995.6 DAY 16 8 26 9 29 17 21 6 1 19 9 28 ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION OMIDIYEH (PAYGAH) (40830) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 30 46 N LONGITUDE 49 39 E DATA PROCESSING CENTER ELEVATION 34.9 M MEANS AND EXTREMES FOR THE YEAR 1984 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 0600 UTC. MEAN QFE PRESSURE IN HPA 1016.9 1016.5 1012.1 1008.6 1005.2 996.8 995.2 996.9 1003.7 1012.3 1016.1 1017.9 1008.2 MAX. QFE PRESSURE IN HPA 1022.1 1020.2 1020.3 1014.4 1011.1 1004.1 998.3 999.8 1008.4 1021.7 1021.0 1022.9 1022.9 DAY 5 29 1 13 2 1 26 24 22 20 26 18 MIN. QFE PRESSURE IN HPA 1011.3 1009.6 1005.2 1004.1 999.7 992.9 992.8 993.2 997.1 1005.6 1014.0 1013.0 992.8 DAY 16 8 26 24 28 16 20 6 1 17 15 28 MEAN QNH PRESSURE IN HPA 1020.8 1020.4 1016.0 1012.5 1009.0 1000.6 999.1 1000.7 1007.6 1016.1 1020.0 1021.8 1012.1 MAX. QNH PRESSURE IN HPA 1026.0 1024.1 1024.2 1018.3 1015.0 1008.0 1002.1 1003.7 1012.3 1025.6 1024.9 1026.8 1026.8 DAY 5 29 1 13 2 1 26 24 22 20 26 18 MIN. QNH PRESSURE IN HPA 1015.2 1013.5 1009.1 1008.0 1003.6 996.7 996.6 997.0 1000.9 1009.5 1017.9 1016.9 996.6 DAY 16 8 26 24 28 16 20 6 1 17 15 28 MEAN QFF PRESSURE IN HPA 1021.2 1020.7 1016.2 1012.6 1009.1 1000.6 999.0 1000.7 1007.6 1016.3 1020.2 1022.1 1012.2 MAX. QFF PRESSURE IN HPA 1026.4 1024.5 1024.6 1018.5 1015.2 1008.0 1002.1 1003.7 1012.3 1025.9 1025.1 1027.2 1027.2 DAY 5 29 1 13 2 1 26 24 22 20 26 18 MIN. QFF PRESSURE IN HPA 1015.5 1013.7 1009.3 1008.0 1003.5 996.7 996.6 997.0 1001.0 1009.6 1018.2 1017.2 996.6 DAY 16 8 26 24 28 16 20 6 1 17 15 28 PRESSURE AT HOUR 0900 UTC. MEAN QFE PRESSURE IN HPA 1016.6 1016.2 1011.8 1008.3 1005.0 996.4 994.8 996.5 1003.2 1011.6 1015.3 1017.2 1007.7 MAX. QFE PRESSURE IN HPA 1022.1 1020.5 1020.3 1013.8 1010.3 1003.2 998.1 999.8 1007.9 1021.0 1020.0 1022.4 1022.4 DAY 4 20 1 13 2 1 26 24 22 20 26 18 MIN. QFE PRESSURE IN HPA 1008.8 1010.4 1005.3 1001.7 998.8 992.3 992.3 992.8 996.6 1005.4 1011.6 1011.7 992.3 DAY 16 8 15 24 28 16 20 6 1 8 11 3 MEAN QNH PRESSURE IN HPA 1020.5 1020.1 1015.7 1012.2 1008.9 1000.2 998.6 1000.4 1007.1 1015.4 1019.2 1021.1 1011.6 MAX. QNH PRESSURE IN HPA 1026.0 1024.4 1024.2 1017.7 1014.2 1007.1 1001.9 1003.7 1011.8 1024.9 1023.9 1026.3 1026.3 DAY 4 20 1 13 2 1 26 24 22 20 26 18 MIN. QNH PRESSURE IN HPA 1012.7 1014.3 1009.2 1005.6 1002.7 996.1 996.1 996.6 1000.4 1009.3 1015.5 1015.6 996.1 DAY 16 8 15 24 28 16 20 6 1 8 11 3 MEAN QFF PRESSURE IN HPA 1020.8 1020.3 1015.9 1012.3 1008.9 1000.2 998.5 1000.3 1007.1 1015.6 1019.4 1021.5 1011.7 MAX. QFF PRESSURE IN HPA 1026.3 1024.7 1024.5 1017.9 1014.4 1007.1 1001.9 1003.6 1011.8 1025.2 1024.1 1026.7 1026.7 DAY 4 20 1 13 2 1 26 24 22 20 26 18 MIN. QFF PRESSURE IN HPA 1012.9 1014.5 1009.4 1005.6 1002.6 996.1 996.0 996.6 1000.4 1009.3 1015.7 1015.8 996.0 DAY 16 8 26 24 28 16 20 6 1 8 11 3 PRESSURE AT HOUR 1200 UTC. MEAN QFE PRESSURE IN HPA 1015.1 1014.4 1010.0 1007.0 1003.6 995.0 993.2 994.9 1001.4 1010.0 1013.9 1015.7 1006.2 MAX. QFE PRESSURE IN HPA 1020.8 1018.5 1018.1 1012.2 1008.4 1001.6 996.4 998.0 1005.9 1019.3 1018.8 1020.5 1020.8 DAY 4 20 1 12 1 1 26 24 22 20 26 18 MIN. QFE PRESSURE IN HPA 1006.3 1009.4 1002.2 1000.8 997.2 990.8 990.4 991.5 994.7 1003.8 1009.9 1009.5 990.4 DAY 16 7 15 16 28 16 20 6 1 8 11 3 MEAN QNH PRESSURE IN HPA 1019.0 1018.3 1013.9 1010.8 1007.5 998.8 997.1 998.8 1005.3 1013.9 1017.8 1019.6 1010.1 MAX. QNH PRESSURE IN HPA 1024.7 1022.4 1022.0 1016.1 1012.3 1005.5 1000.2 1001.8 1009.8 1023.2 1022.7 1024.4 1024.7 DAY 4 20 1 12 1 1 26 24 22 20 26 18 MIN. QNH PRESSURE IN HPA 1010.2 1013.3 1006.1 1004.7 1001.0 994.6 994.2 995.3 998.5 1007.7 1013.8 1013.4 994.2 DAY 16 7 15 16 28 16 20 6 1 8 11 3 MEAN QFF PRESSURE IN HPA 1019.3 1018.6 1014.1 1010.9 1007.5 998.8 997.0 998.7 1005.3 1014.0 1017.9 1019.9 1010.2 MAX. QFF PRESSURE IN HPA 1025.0 1022.7 1022.3 1016.2 1012.4 1005.5 1000.2 1001.8 1009.8 1023.5 1022.9 1024.8 1025.0 DAY 4 20 1 12 2 1 26 24 22 20 26 18 MIN. QFF PRESSURE IN HPA 1010.5 1013.5 1006.3 1004.7 1001.0 994.6 994.1 995.3 998.5 1007.7 1014.0 1013.6 994.1 DAY 16 7 15 16 28 16 20 6 1 8 11 3 ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION OMIDIYEH (PAYGAH) (40830) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 30 46 N LONGITUDE 49 39 E DATA PROCESSING CENTER ELEVATION 34.9 M MEANS AND EXTREMES FOR THE YEAR 1984 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 1500 UTC. MEAN QFE PRESSURE IN HPA 1015.0 1014.5 1009.9 1006.4 1003.0 994.3 992.7 994.5 1001.2 1010.0 1014.1 1016.1 1006.0 MAX. QFE PRESSURE IN HPA 1021.4 1017.9 1017.9 1012.0 1008.5 1000.6 996.2 997.4 1005.9 1019.2 1019.0 1020.8 1021.4 DAY 4 1 1 13 1 1 31 24 26 20 26 17 MIN. QFE PRESSURE IN HPA 1005.0 1008.1 1002.5 1000.7 997.0 990.0 990.1 991.2 994.1 1004.2 1008.3 1010.1 990.0 DAY 16 7 15 16 28 16 20 5 1 8 11 3 MEAN QNH PRESSURE IN HPA 1018.9 1018.4 1013.8 1010.3 1006.9 998.2 996.5 998.3 1005.1 1013.9 1018.0 1020.0 1009.8 MAX. QNH PRESSURE IN HPA 1025.3 1021.8 1021.8 1015.9 1012.4 1004.5 1000.0 1001.2 1009.8 1023.1 1022.9 1024.7 1025.3 DAY 4 1 1 13 1 1 31 24 26 20 26 17 MIN. QNH PRESSURE IN HPA 1008.9 1012.0 1006.4 1004.6 1000.8 993.8 993.9 995.0 997.9 1008.1 1012.2 1014.0 993.8 DAY 16 7 15 16 28 16 20 5 1 8 11 3 MEAN QFF PRESSURE IN HPA 1019.3 1018.7 1014.0 1010.4 1006.9 998.2 996.5 998.3 1005.1 1014.0 1018.2 1020.3 1010.0 MAX. QFF PRESSURE IN HPA 1025.7 1022.2 1022.1 1016.1 1012.5 1004.5 1000.0 1001.2 1009.8 1023.4 1023.1 1025.1 1025.7 DAY 4 1 1 13 1 1 31 24 26 20 26 17 MIN. QFF PRESSURE IN HPA 1009.1 1012.3 1006.6 1004.7 1000.9 993.8 993.9 995.0 998.0 1008.1 1012.4 1014.2 993.8 DAY 16 7 15 16 28 16 20 5 1 8 11 3 PRESSURE AT HOUR 1800 UTC. MEAN QFE PRESSURE IN HPA 1015.7 1015.3 1010.6 1007.3 1003.8 995.4 993.9 995.6 1002.3 1010.9 1014.6 1016.7 1006.8 MAX. QFE PRESSURE IN HPA 1021.8 1018.6 1018.6 1013.3 1010.2 1001.6 998.2 998.6 1007.0 1019.5 1019.7 1022.1 1022.1 DAY 4 2 1 13 1 1 31 24 26 20 26 17 MIN. QFE PRESSURE IN HPA 1003.5 1008.3 1002.5 1003.1 997.6 990.6 991.1 992.4 995.0 1005.2 1008.3 1012.0 990.6 DAY 16 7 25 16 28 16 20 5 1 7 11 3 MEAN QNH PRESSURE IN HPA 1019.6 1019.2 1014.5 1011.2 1007.7 999.2 997.7 999.4 1006.2 1014.8 1018.5 1020.6 1010.7 MAX. QNH PRESSURE IN HPA 1025.7 1022.5 1022.5 1017.2 1014.1 1005.5 1002.0 1002.4 1010.9 1023.4 1023.6 1026.0 1026.0 DAY 4 2 1 13 1 1 31 24 26 20 26 17 MIN. QNH PRESSURE IN HPA 1007.4 1012.2 1006.4 1007.0 1001.4 994.4 994.9 996.2 998.8 1009.1 1012.2 1015.9 994.4 DAY 16 7 25 16 28 16 20 5 1 7 11 3 MEAN QFF PRESSURE IN HPA 1019.9 1019.5 1014.7 1011.3 1007.7 999.2 997.7 999.4 1006.2 1015.0 1018.8 1020.9 1010.9 MAX. QFF PRESSURE IN HPA 1026.1 1022.9 1022.8 1017.4 1014.2 1005.5 1002.0 1002.5 1010.9 1023.7 1023.8 1026.4 1026.4 DAY 4 2 1 13 1 1 31 24 26 20 26 17 MIN. QFF PRESSURE IN HPA 1007.6 1012.5 1006.6 1007.0 1001.4 994.4 994.9 996.2 998.9 1009.1 1012.4 1016.1 994.4 DAY 16 7 25 16 28 16 20 5 1 7 11 3 PRESSURE AT HOUR 2100 UTC. MEAN QFE PRESSURE IN HPA 1015.7 1015.4 1011.0 1007.8 1004.0 995.7 994.5 995.9 1002.5 1011.0 1014.9 1016.7 1007.1 MAX. QFE PRESSURE IN HPA 1022.1 1018.6 1018.8 1013.5 1011.0 1001.4 999.2 999.0 1006.9 1019.8 1019.2 1022.2 1022.2 DAY 4 2 1 13 1 4 31 24 21 20 26 17 MIN. QFE PRESSURE IN HPA 1004.8 1008.1 1005.6 1003.9 999.0 991.1 991.7 992.6 995.8 1005.9 1011.6 1011.8 991.1 DAY 16 7 14 8 28 16 20 5 1 7 14 3 MEAN QNH PRESSURE IN HPA 1019.6 1019.3 1014.9 1011.7 1007.9 999.6 998.4 999.8 1006.4 1014.9 1018.8 1020.6 1011.0 MAX. QNH PRESSURE IN HPA 1026.0 1022.5 1022.7 1017.4 1014.9 1005.3 1003.1 1002.9 1010.8 1023.7 1023.1 1026.1 1026.1 DAY 4 2 1 13 1 4 31 24 21 20 26 17 MIN. QNH PRESSURE IN HPA 1008.7 1012.0 1009.5 1007.8 1002.9 994.9 995.5 996.4 999.6 1009.8 1015.5 1015.7 994.9 DAY 16 7 14 8 28 16 20 5 1 7 14 3 MEAN QFF PRESSURE IN HPA 1020.0 1019.5 1015.1 1011.8 1007.9 999.6 998.3 999.8 1006.4 1015.0 1019.0 1020.9 1011.1 MAX. QFF PRESSURE IN HPA 1026.4 1022.9 1023.0 1017.5 1015.0 1005.2 1003.0 1002.8 1010.8 1024.0 1023.3 1026.5 1026.5 DAY 4 2 1 13 1 4 31 24 21 20 26 17 MIN. QFF PRESSURE IN HPA 1008.9 1012.2 1009.7 1007.8 1002.8 994.9 995.5 996.4 999.7 1009.8 1015.7 1015.9 994.9 DAY 16 7 14 16 28 16 20 5 1 7 14 3 ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION OMIDIYEH (PAYGAH) (40830) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 30 46 N LONGITUDE 49 39 E DATA PROCESSING CENTER ELEVATION 34.9 M MEANS AND EXTREMES FOR THE YEAR 1985 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AIR TEMPERATURE (C) 14.1 12.7 18.5 25.1 31.7 34.5 36.2 36.5 32.4 25.1 19.6 13.2 25.0 MINIMUN AIR TEMPERATURE (C) 10.0 7.1 11.8 17.3 22.4 23.6 26.1 26.3 22.6 16.1 13.3 8.4 17.1 DAYS WITH MINIMUM TEMP. >=21 0 0 3 3 25 27 30 31 22 3 0 0 144 DAYS WITH MINIMUM TEMP. <=-4 0 0 0 0 0 0 0 0 0 0 0 0 0 DAYS WITH FREEZING MIN.<= 0 0 3 0 0 0 0 0 0 0 0 0 0 3 TEMPERATURE RECORDS LOWEST(C) 4.6 -0.8 0.4 13.0 15.4 20.0 21.4 21.4 17.8 10.0 8.4 2.0 -0.8 DAY 18 24 4 9 5 1 29 14 26 24 30 6 MAXIMUM AIR TEMPERATURE (C) 19.6 19.4 25.4 32.7 40.4 44.8 46.5 46.4 43.1 35.6 27.4 19.1 33.4 DAYS WITH MAXIMUM TEMP. >=30 0 0 9 23 31 30 31 31 30 29 9 0 223 DAYS WITH MAXIMUM TEMP. <= 0 0 0 0 0 0 0 0 0 0 0 0 0 0 TEMPERATURE RECORDS HIGHEST(C) 24.4 25.0 34.0 37.8 46.8 49.2 50.6 48.2 46.2 43.6 33.0 27.2 50.6 DAY 28 13 19 19 30 28 10 19 1 1 4 1 DIF. BETWEEN (MAX.-MIN.) (C) 9.6 12.3 13.6 15.4 18.0 21.2 20.4 20.1 20.5 19.5 14.1 10.7 16.3 MEAN DAILY TEMP. (MDT) (C) 14.8 13.3 18.6 25.0 31.4 34.2 36.3 36.4 32.8 25.8 20.3 13.8 25.2 COOLING DEG. DAYS(BASE 21 0C) 0.0 0.0 41.6 120.4 322.3 396.9 459.7 476.1 355.4 152.5 19.2 0.0 2344.1 HEATING DEG. DAYS(BASE 18 0C) 103.9 132.6 74.9 0.0 0.0 0.0 0.0 0.0 0.0 0.0 2.5 135.3 449.2 DEWPOINT (MEAN C) 10.3 3.8 2.3 9.4 10.8 10.7 11.9 15.1 11.2 8.1 9.2 7.3 9.2 MIXING RATIO (G/KG) 7.94 5.25 4.99 7.67 8.47 8.52 9.48 11.35 8.96 7.26 7.47 6.63 7.83 VAPOUR PRESSURE (HPA) 12.78 8.47 8.03 12.25 13.46 13.45 14.88 17.81 14.18 11.61 12.02 10.71 12.47 SATURATION DEF. (HPA) 3.86 7.01 15.24 21.29 36.47 45.52 49.43 47.37 38.22 23.14 11.77 5.17 25.38 RELATIVE HUMIDITY (MEAN %) 79 58 37 40 31 26 26 31 31 37 55 70 43 RELATIVE HUMIDITY (MAX. %) 92 78 58 60 47 42 39 52 51 49 73 84 60 RELATIVE HUMIDITY (MIN. %) 60 36 19 23 18 14 14 16 15 24 35 51 27 RELATIVE HUMIDITY (MEAN% 03UTC) 90 76 55 57 44 39 37 49 48 46 68 79 57 RELATIVE HUMIDITY (MEAN% 09UTC) 71 46 27 30 20 18 19 20 22 28 41 60 34 RELATIVE HUMIDITY (MEAN% 15UTC) 74 47 25 29 23 17 18 20 19 32 48 67 35 RH=0 => RELATIVE HUMIDITY < 0.5% AMOUNT OF PRECIPITATION MM. 32.0 9.8 2.9 4.3 2.9 0.0 0.0 0.0 0.0 0.0 50.2 65.1 167.2 DAYS WITH PRECIPITATION >=10 1 0 0 0 0 0 0 0 0 0 1 3 5 DAYS WITH PRECIPITATION >= 5 2 1 0 0 0 0 0 0 0 0 2 4 9 DAYS WITH PRECIPITATION >= 1 4 2 2 1 1 0 0 0 0 0 2 6 18 DAYS WITH PRECIPITATION 9 3 4 4 1 0 0 0 0 0 5 11 37 GREATEST DAILY PRECIPITATION 18.1 7.0 1.3 2.8 2.9 0.0 0.0 0.0 0.0 0.0 43.2 23.1 43.2 DAY 2 1 3 24 12 ** ** ** ** ** 12 19 DAY WITH THUNDER STORM 2 1 1 3 1 0 0 1 0 0 3 6 18 DAYS WITH SNOW OR SLEET 0 0 0 0 0 0 0 0 0 0 0 0 0 DAYS WITH DUST 4 12 18 15 13 13 19 6 2 9 4 6 121 WIND DIRECTION (PREVAILING) 135 315 315 315 315 315 315 180 315 315 315 315 315 PREVAILING WIND SPEED(KNOTS) 10.0 10.8 9.2 10.2 10.9 12.1 11.6 9.2 9.4 9.6 8.9 9.6 10.4 PREVAILING WIND PERCENT 11.3 27.7 33.1 32.1 47.2 45.8 50.4 19.4 23.3 41.1 30.0 23.4 31.4 CALMS PERCENT OF WIND 60.1 31.7 29.4 23.3 23.0 25.4 20.2 36.7 32.5 34.3 48.3 44.4 34.1 NO. OF WIND OBSERVATION 248 224 248 240 248 240 248 248 240 248 240 248 2920 VECTOR WIND DIRECTION (MEAN) 211 293 314 280 320 306 305 241 291 316 308 326 302 VECTOR WIND MAGNITUDE(KNOTS) 0.7 3.1 3.3 2.5 5.8 6.8 7.2 2.9 2.5 4.6 1.8 0.6 3.2 WIND STEADINESES (MEAN %) 21.9 43.7 50.8 30.5 72.5 81.0 80.9 46.0 44.6 75.4 36.7 10.3 48.5 WIND SPEED (MEAN KNOTS) 3.2 7.1 6.5 8.2 8.0 8.4 8.9 6.3 5.6 6.1 4.9 5.8 6.6 FASTEST WIND DIRECTION 120 180 350 240 10 300 310 240 340 340 330 180 240 FASTEST WIND SPEED (KNOTS) 17 39 21 49 29 27 29 25 25 27 31 29 49 DAY 18 26 1 23 2 1 21 13 14 3 12 16 DAYS WITH SKY CLEAR (0-2)/8 8 16 12 14 17 30 28 29 30 29 13 15 241 DAYS WITH P.CLOUDY (3-6)/8 16 7 11 10 7 0 3 2 0 2 12 4 74 DAYS WITH CLOUDY (7-8)/8 7 5 8 6 7 0 0 0 0 0 5 12 50 DAYS WITH VISIBILITY =< 2 KM 6 2 0 1 0 0 4 1 0 1 4 5 24 DURATION OF SUNSHINE HOURS 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION OMIDIYEH (PAYGAH) (40830) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 30 46 N LONGITUDE 49 39 E DATA PROCESSING CENTER ELEVATION 34.9 M MEANS AND EXTREMES FOR THE YEAR 1985 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL MEAN QFE PRESSURE IN HPA 1015.0 1014.0 1012.5 1007.2 1002.9 996.7 994.1 996.1 1001.9 1009.6 1014.0 1016.5 1006.7 MAX. QFE PRESSURE IN HPA 1020.7 1022.2 1023.3 1011.7 1009.7 1001.6 999.1 1001.6 1009.4 1015.8 1018.3 1023.2 1023.3 DAY-HOUR 24- 6 23- 9 5- 6 5- 6 12-15 9- 6 3- 6 30- 6 30- 6 31- 6 17- 6 31- 9 MIN. QFE PRESSURE IN HPA 1008.0 1002.8 1000.9 1001.1 996.6 991.2 989.7 990.0 995.1 1003.6 1007.8 1002.1 989.7 DAY-HOUR 2- 9 26- 3 23-15 23-15 29-15 27-15 8-15 7-15 5-15 9-12 10-12 18-15 MEAN QNH PRESSURE IN HPA 1018.9 1017.9 1016.4 1011.0 1006.8 1000.5 998.0 999.9 1005.7 1013.5 1017.9 1020.4 1010.6 MAX. QNH PRESSURE IN HPA 1024.6 1026.1 1027.2 1015.6 1013.6 1005.5 1003.0 1005.5 1013.3 1019.7 1022.2 1027.1 1027.2 DAY-HOUR 24- 6 23- 9 5- 6 5- 6 12-15 9- 6 3- 6 30- 6 30- 6 31- 6 17- 6 31- 9 MIN. QNH PRESSURE IN HPA 1011.9 1006.7 1004.8 1005.0 1000.4 995.0 993.5 993.8 998.9 1007.5 1011.7 1006.0 993.5 DAY-HOUR 2- 9 26- 3 23-15 23-15 29-15 27-15 8-15 7-15 5-15 9-12 10-12 18-15 MEAN QFF PRESSURE IN HPA 1019.2 1018.2 1016.6 1011.2 1006.8 1000.5 997.9 999.9 1005.8 1013.6 1018.1 1020.7 1010.7 MAX. QFF PRESSURE IN HPA 1025.0 1026.5 1027.6 1015.8 1013.7 1005.5 1002.9 1005.4 1013.3 1019.9 1022.5 1027.5 1027.6 DAY-HOUR 24- 6 23- 9 5- 6 5- 6 12-15 9- 6 3- 6 30- 6 30- 6 31- 6 17- 6 31- 9 MIN. QFF PRESSURE IN HPA 1012.2 1006.9 1004.9 1005.0 1000.5 995.0 993.5 993.8 998.9 1007.5 1011.9 1006.2 993.5 DAY-HOUR 2- 9 26- 3 23-15 23-15 29-15 27-15 9-15 7-15 5-15 9-12 10-12 18-15 PRESSURE AT HOUR 0000 UTC. MEAN QFE PRESSURE IN HPA 1014.9 1013.5 1012.4 1006.8 1002.7 996.7 994.2 995.9 1001.4 1009.3 1013.8 1016.2 1006.5 MAX. QFE PRESSURE IN HPA 1019.1 1020.4 1021.8 1009.7 1007.4 1000.7 998.7 1000.3 1007.0 1014.0 1016.5 1022.7 1022.7 DAY 14 28 9 7 13 9 3 31 30 22 18 30 MIN. QFE PRESSURE IN HPA 1010.2 1003.0 1001.3 1002.6 997.0 992.4 991.0 991.2 996.1 1004.1 1008.1 1002.8 991.0 DAY 3 26 24 20 26 28 10 7 6 10 11 19 MEAN QNH PRESSURE IN HPA 1018.8 1017.4 1016.3 1010.7 1006.6 1000.6 998.0 999.7 1005.3 1013.2 1017.7 1020.1 1010.4 MAX. QNH PRESSURE IN HPA 1023.0 1024.3 1025.7 1013.6 1011.3 1004.6 1002.6 1004.2 1010.9 1017.9 1020.4 1026.6 1026.6 DAY 14 28 9 7 13 9 3 31 30 22 18 30 MIN. QNH PRESSURE IN HPA 1014.1 1006.9 1005.2 1006.5 1000.8 996.2 994.8 995.0 999.9 1008.0 1012.0 1006.7 994.8 DAY 3 26 24 20 26 28 10 7 6 10 11 19 MEAN QFF PRESSURE IN HPA 1019.1 1017.7 1016.5 1010.8 1006.6 1000.6 998.0 999.7 1005.3 1013.3 1017.8 1020.4 1010.5 MAX. QFF PRESSURE IN HPA 1023.3 1024.6 1026.1 1013.7 1011.4 1004.6 1002.5 1004.1 1010.9 1018.0 1020.6 1027.0 1027.0 DAY 24 28 9 7 13 9 3 31 30 22 18 30 MIN. QFF PRESSURE IN HPA 1014.4 1007.1 1005.3 1006.5 1000.8 996.2 994.8 995.0 999.9 1008.0 1012.1 1006.9 994.8 DAY 3 26 24 20 26 28 10 7 6 10 11 19 PRESSURE AT HOUR 0300 UTC. MEAN QFE PRESSURE IN HPA 1015.0 1013.7 1012.6 1007.1 1003.1 997.1 994.6 996.6 1002.1 1009.5 1014.1 1016.2 1006.8 MAX. QFE PRESSURE IN HPA 1019.4 1021.1 1022.1 1009.6 1008.0 1000.5 997.9 1000.7 1007.7 1014.2 1017.3 1021.9 1022.1 DAY 24 28 5 11 12 9 3 30 30 31 17 30 MIN. QFE PRESSURE IN HPA 1010.2 1002.8 1003.0 1002.9 997.7 993.3 991.6 991.2 996.7 1004.6 1009.0 1002.8 991.2 DAY 2 26 24 20 26 28 26 7 6 10 11 19 MEAN QNH PRESSURE IN HPA 1018.9 1017.6 1016.5 1011.0 1007.0 1000.9 998.4 1000.4 1005.9 1013.4 1018.0 1020.1 1010.7 MAX. QNH PRESSURE IN HPA 1023.3 1025.0 1026.0 1013.5 1011.9 1004.4 1001.7 1004.6 1011.6 1018.1 1021.2 1025.8 1026.0 DAY 24 28 5 11 12 9 3 30 30 31 17 30 MIN. QNH PRESSURE IN HPA 1014.1 1006.7 1006.9 1006.8 1001.5 997.1 995.4 995.0 1000.5 1008.5 1012.9 1006.7 995.0 DAY 2 26 24 20 26 28 26 7 6 10 11 19 MEAN QFF PRESSURE IN HPA 1019.2 1017.9 1016.8 1011.2 1007.0 1001.0 998.4 1000.4 1006.0 1013.6 1018.2 1020.4 1010.8 MAX. QFF PRESSURE IN HPA 1023.6 1025.4 1026.4 1013.7 1012.0 1004.4 1001.7 1004.5 1011.7 1018.3 1021.5 1026.2 1026.4 DAY 24 28 5 11 12 10 3 31 30 31 17 30 MIN. QFF PRESSURE IN HPA 1014.4 1006.9 1007.0 1006.9 1001.5 997.1 995.4 995.0 1000.5 1008.6 1013.1 1006.9 995.0 DAY 2 26 24 20 26 28 26 7 6 10 11 19 ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION OMIDIYEH (PAYGAH) (40830) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 30 46 N LONGITUDE 49 39 E DATA PROCESSING CENTER ELEVATION 34.9 M MEANS AND EXTREMES FOR THE YEAR 1985 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 0600 UTC. MEAN QFE PRESSURE IN HPA 1016.2 1014.9 1014.1 1008.6 1004.3 997.8 995.3 997.4 1003.4 1010.9 1015.4 1017.4 1008.0 MAX. QFE PRESSURE IN HPA 1020.7 1022.2 1023.3 1011.7 1009.2 1001.6 999.1 1001.6 1009.4 1015.8 1018.3 1023.1 1023.3 DAY 24 28 5 5 12 9 3 30 30 31 17 29 MIN. QFE PRESSURE IN HPA 1010.2 1002.9 1005.5 1005.0 999.2 994.4 992.0 991.9 998.0 1006.4 1010.3 1004.0 991.9 DAY 2 26 24 20 26 28 26 7 6 8 11 19 MEAN QNH PRESSURE IN HPA 1020.1 1018.8 1018.0 1012.5 1008.1 1001.7 999.1 1001.3 1007.3 1014.7 1019.3 1021.3 1011.9 MAX. QNH PRESSURE IN HPA 1024.6 1026.1 1027.2 1015.6 1013.1 1005.5 1003.0 1005.5 1013.3 1019.7 1022.2 1027.0 1027.2 DAY 24 28 5 5 12 9 3 30 30 31 17 29 MIN. QNH PRESSURE IN HPA 1014.1 1006.8 1009.4 1008.9 1003.1 998.2 995.8 995.7 1001.8 1010.3 1014.2 1007.9 995.7 DAY 2 26 24 20 26 28 26 7 6 8 11 19 MEAN QFF PRESSURE IN HPA 1020.4 1019.1 1018.2 1012.6 1008.2 1001.7 999.1 1001.3 1007.3 1014.9 1019.6 1021.7 1012.0 MAX. QFF PRESSURE IN HPA 1025.0 1026.5 1027.6 1015.8 1013.2 1005.5 1002.9 1005.4 1013.3 1019.9 1022.5 1027.4 1027.6 DAY 24 28 5 5 12 9 3 30 30 31 17 29 MIN. QFF PRESSURE IN HPA 1014.4 1007.0 1009.5 1009.0 1003.0 998.2 995.8 995.7 1001.9 1010.4 1014.4 1008.1 995.7 DAY 2 26 24 20 26 28 26 7 6 8 11 19 PRESSURE AT HOUR 0900 UTC. MEAN QFE PRESSURE IN HPA 1015.5 1014.7 1013.7 1008.2 1003.8 997.4 994.9 996.9 1002.8 1010.3 1014.6 1016.7 1007.5 MAX. QFE PRESSURE IN HPA 1020.4 1022.2 1023.0 1011.3 1008.0 1001.4 998.8 1001.2 1008.9 1015.3 1018.0 1023.2 1023.2 DAY 24 23 5 5 12 9 3 30 30 31 17 31 MIN. QFE PRESSURE IN HPA 1008.0 1003.3 1006.1 1004.1 998.7 994.0 991.5 991.7 997.9 1005.5 1009.6 1005.1 991.5 DAY 2 26 24 19 29 28 26 7 5 8 10 19 MEAN QNH PRESSURE IN HPA 1019.4 1018.6 1017.6 1012.1 1007.7 1001.3 998.7 1000.8 1006.7 1014.2 1018.5 1020.7 1011.4 MAX. QNH PRESSURE IN HPA 1024.3 1026.1 1026.9 1015.2 1011.9 1005.3 1002.7 1005.1 1012.8 1019.2 1021.9 1027.1 1027.1 DAY 24 23 5 5 12 9 3 30 30 31 17 31 MIN. QNH PRESSURE IN HPA 1011.9 1007.2 1010.0 1008.0 1002.6 997.8 995.3 995.5 1001.7 1009.4 1013.5 1009.0 995.3 DAY 2 26 24 19 29 28 26 7 5 8 10 19 MEAN QFF PRESSURE IN HPA 1019.7 1018.9 1017.8 1012.2 1007.7 1001.3 998.7 1000.7 1006.7 1014.3 1018.7 1020.9 1011.5 MAX. QFF PRESSURE IN HPA 1024.6 1026.5 1027.3 1015.3 1011.9 1005.3 1002.6 1005.0 1012.8 1019.4 1022.1 1027.5 1027.5 DAY 24 23 5 5 12 9 3 30 30 31 17 31 MIN. QFF PRESSURE IN HPA 1012.2 1007.4 1010.1 1008.0 1002.6 997.8 995.3 995.5 1001.7 1009.5 1013.7 1009.2 995.3 DAY 2 26 24 19 29 28 26 7 5 8 10 19 PRESSURE AT HOUR 1200 UTC. MEAN QFE PRESSURE IN HPA 1014.0 1013.1 1011.8 1006.5 1002.3 995.9 993.3 995.1 1001.0 1008.6 1013.1 1015.6 1005.8 MAX. QFE PRESSURE IN HPA 1018.3 1019.9 1021.6 1010.7 1007.4 999.8 997.7 999.8 1007.0 1013.5 1016.5 1021.2 1021.6 DAY 24 23 9 5 12 9 2 30 30 31 17 29 MIN. QFE PRESSURE IN HPA 1008.6 1003.3 1002.6 1001.8 997.2 992.1 990.0 990.7 995.8 1003.6 1007.8 1003.3 990.0 DAY 2 1 23 19 29 28 10 7 5 9 10 18 MEAN QNH PRESSURE IN HPA 1017.9 1017.0 1015.6 1010.4 1006.1 999.7 997.1 998.9 1004.9 1012.5 1017.0 1019.5 1009.7 MAX. QNH PRESSURE IN HPA 1022.2 1023.8 1025.5 1014.6 1011.3 1003.7 1001.5 1003.7 1010.9 1017.4 1020.4 1025.1 1025.5 DAY 24 23 9 5 12 9 2 30 30 31 17 29 MIN. QNH PRESSURE IN HPA 1012.5 1007.2 1006.5 1005.7 1001.0 995.9 993.8 994.5 999.6 1007.5 1011.7 1007.2 993.8 DAY 2 1 23 19 29 28 10 7 5 9 10 18 MEAN QFF PRESSURE IN HPA 1018.1 1017.2 1015.9 1010.5 1006.2 999.7 997.1 998.9 1004.9 1012.6 1017.2 1019.8 1009.8 MAX. QFF PRESSURE IN HPA 1022.5 1024.2 1025.9 1014.8 1011.4 1003.7 1001.5 1003.6 1010.9 1017.6 1020.6 1025.5 1025.9 DAY 24 23 9 5 12 9 2 30 30 31 17 29 MIN. QFF PRESSURE IN HPA 1012.8 1007.4 1006.6 1005.7 1001.0 995.9 993.8 994.5 999.6 1007.5 1011.9 1007.4 993.8 DAY 2 1 23 19 29 28 10 7 5 9 10 18 ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION OMIDIYEH (PAYGAH) (40830) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 30 46 N LONGITUDE 49 39 E DATA PROCESSING CENTER ELEVATION 34.9 M MEANS AND EXTREMES FOR THE YEAR 1985 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 1500 UTC. MEAN QFE PRESSURE IN HPA 1014.3 1013.3 1011.3 1006.0 1001.8 995.3 992.6 994.7 1000.8 1008.7 1013.3 1016.0 1005.7 MAX. QFE PRESSURE IN HPA 1018.7 1020.0 1021.5 1009.8 1009.7 999.3 997.3 999.4 1006.6 1013.7 1016.5 1022.2 1022.2 DAY 24 23 9 5 12 9 2 30 30 21 17 29 MIN. QFE PRESSURE IN HPA 1009.8 1004.5 1000.9 1001.1 996.6 991.2 989.7 990.0 995.1 1003.8 1008.4 1002.1 989.7 DAY 29 1 23 23 29 27 8 7 5 9 10 18 MEAN QNH PRESSURE IN HPA 1018.2 1017.2 1015.2 1009.9 1005.7 999.1 996.4 998.5 1004.6 1012.6 1017.2 1019.9 1009.5 MAX. QNH PRESSURE IN HPA 1022.6 1023.9 1025.4 1013.7 1013.6 1003.2 1001.1 1003.3 1010.5 1017.6 1020.4 1026.1 1026.1 DAY 24 23 9 5 12 9 2 30 30 21 17 29 MIN. QNH PRESSURE IN HPA 1013.7 1008.4 1004.8 1005.0 1000.4 995.0 993.5 993.8 998.9 1007.7 1012.3 1006.0 993.5 DAY 29 1 23 23 29 27 8 7 5 9 10 18 MEAN QFF PRESSURE IN HPA 1018.5 1017.5 1015.4 1010.0 1005.7 999.1 996.4 998.5 1004.7 1012.8 1017.5 1020.3 1009.7 MAX. QFF PRESSURE IN HPA 1022.9 1024.4 1025.8 1013.9 1013.7 1003.2 1001.1 1003.2 1010.6 1017.8 1020.7 1026.5 1026.5 DAY 24 23 9 5 12 9 2 30 30 21 17 29 MIN. QFF PRESSURE IN HPA 1013.9 1008.6 1004.9 1005.0 1000.5 995.0 993.5 993.8 998.9 1007.8 1012.5 1006.2 993.5 DAY 29 1 23 23 29 27 9 7 5 9 10 18 PRESSURE AT HOUR 1800 UTC. MEAN QFE PRESSURE IN HPA 1015.0 1014.4 1012.0 1006.9 1002.7 996.3 993.9 995.9 1001.8 1009.7 1013.9 1016.8 1006.6 MAX. QFE PRESSURE IN HPA 1019.3 1020.9 1022.2 1010.0 1009.2 1000.1 998.3 1001.0 1007.0 1014.6 1017.4 1022.8 1022.8 DAY 24 28 9 5 12 9 3 30 22 21 17 31 MIN. QFE PRESSURE IN HPA 1010.5 1006.7 1003.1 1002.1 997.4 992.2 990.6 991.1 996.0 1005.0 1008.4 1002.5 990.6 DAY 2 15 23 19 29 27 9 6 5 8 10 18 MEAN QNH PRESSURE IN HPA 1018.9 1018.3 1015.9 1010.8 1006.5 1000.2 997.7 999.8 1005.6 1013.6 1017.8 1020.7 1010.5 MAX. QNH PRESSURE IN HPA 1023.2 1024.8 1026.1 1013.9 1013.1 1004.0 1002.1 1004.9 1010.9 1018.5 1021.3 1026.7 1026.7 DAY 24 28 9 5 12 9 3 30 22 21 17 31 MIN. QNH PRESSURE IN HPA 1014.4 1010.6 1007.0 1006.0 1001.2 996.0 994.4 994.9 999.8 1008.9 1012.3 1006.4 994.4 DAY 2 15 23 19 29 27 9 6 5 8 10 18 MEAN QFF PRESSURE IN HPA 1019.2 1018.7 1016.1 1010.9 1006.6 1000.2 997.7 999.7 1005.7 1013.7 1018.0 1021.0 1010.6 MAX. QFF PRESSURE IN HPA 1023.6 1025.2 1026.5 1014.1 1013.2 1004.0 1002.1 1004.8 1010.9 1018.7 1021.6 1027.1 1027.1 DAY 24 28 9 5 12 9 3 30 22 21 17 31 MIN. QFF PRESSURE IN HPA 1014.7 1010.9 1007.1 1006.1 1001.3 996.0 994.4 994.9 999.9 1009.0 1012.5 1006.6 994.4 DAY 2 15 23 19 29 27 9 6 5 8 10 18 PRESSURE AT HOUR 2100 UTC. MEAN QFE PRESSURE IN HPA 1015.0 1014.7 1012.2 1007.3 1003.1 996.9 994.5 996.3 1002.0 1009.8 1013.9 1016.8 1006.9 MAX. QFE PRESSURE IN HPA 1019.3 1021.5 1022.0 1010.0 1008.0 1001.0 998.5 1001.0 1007.1 1015.2 1017.2 1022.8 1022.8 DAY 24 28 9 6 12 8 2 30 29 21 17 31 MIN. QFE PRESSURE IN HPA 1010.1 1006.1 1001.8 1002.8 998.0 992.9 990.9 991.5 996.1 1004.8 1008.0 1004.0 990.9 DAY 31 25 23 19 29 27 9 6 5 9 10 18 MEAN QNH PRESSURE IN HPA 1018.9 1018.6 1016.1 1011.2 1006.9 1000.8 998.3 1000.1 1005.8 1013.7 1017.8 1020.7 1010.7 MAX. QNH PRESSURE IN HPA 1023.2 1025.4 1025.9 1013.9 1011.9 1004.9 1002.3 1004.9 1011.0 1019.1 1021.1 1026.7 1026.7 DAY 24 28 9 6 12 8 2 30 29 21 17 31 MIN. QNH PRESSURE IN HPA 1014.0 1010.0 1005.7 1006.7 1001.8 996.7 994.7 995.3 999.9 1008.7 1011.9 1007.9 994.7 DAY 31 25 23 19 29 27 9 6 5 9 10 18 MEAN QFF PRESSURE IN HPA 1019.1 1018.9 1016.3 1011.3 1007.0 1000.8 998.3 1000.1 1005.8 1013.8 1018.0 1021.0 1010.9 MAX. QFF PRESSURE IN HPA 1023.5 1025.8 1026.3 1014.0 1012.0 1004.9 1002.3 1004.8 1011.0 1019.3 1021.3 1027.1 1027.1 DAY 24 28 9 6 12 8 2 30 29 21 17 31 MIN. QFF PRESSURE IN HPA 1014.2 1010.2 1005.7 1006.7 1001.8 996.7 994.7 995.3 999.9 1008.8 1012.0 1008.1 994.7 DAY 31 25 23 19 29 27 9 6 5 9 10 18 ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION OMIDIYEH (PAYGAH) (40830) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 30 46 N LONGITUDE 49 39 E DATA PROCESSING CENTER ELEVATION 34.9 M MEANS AND EXTREMES FOR THE YEAR 1986 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AIR TEMPERATURE (C) 12.2 14.1 17.8 24.2 31.7 34.2 37.7 36.7 33.6 28.7 18.1 12.2 25.1 MINIMUN AIR TEMPERATURE (C) 6.5 9.0 12.0 18.1 23.3 23.9 28.0 28.4 24.5 20.1 12.6 7.7 17.8 DAYS WITH MINIMUM TEMP. >=21 0 0 0 5 23 27 31 31 29 18 0 0 164 DAYS WITH MINIMUM TEMP. <=-4 0 0 0 0 0 0 0 0 0 0 0 0 0 DAYS WITH FREEZING MIN.<= 0 1 0 0 0 0 0 0 0 0 0 0 0 1 TEMPERATURE RECORDS LOWEST(C) 0.0 4.4 6.6 13.0 17.2 18.6 24.0 26.2 21.0 12.0 6.0 3.0 0.0 DAY 24 3 4 10 6 23 1 5 12 27 16 4 MAXIMUM AIR TEMPERATURE (C) 19.1 19.9 24.1 30.6 39.8 43.7 47.3 45.7 43.3 37.9 24.4 17.5 32.8 DAYS WITH MAXIMUM TEMP. >=30 0 0 2 18 31 30 31 31 30 30 4 0 207 DAYS WITH MAXIMUM TEMP. <= 0 0 0 0 0 0 0 0 0 0 0 0 0 0 TEMPERATURE RECORDS HIGHEST(C) 23.6 26.8 32.2 35.4 46.4 46.4 50.0 50.0 45.2 42.6 34.0 22.2 50.0 DAY 13 24 31 24 29 25 18 2 8 3 1 28 DIF. BETWEEN (MAX.-MIN.) (C) 12.6 10.9 12.1 12.5 16.5 19.8 19.3 17.3 18.8 17.8 11.8 9.8 15.0 MEAN DAILY TEMP. (MDT) (C) 12.8 14.5 18.1 24.4 31.6 33.8 37.6 37.1 33.9 29.0 18.5 12.6 25.3 COOLING DEG. DAYS(BASE 21 0C) 0.0 0.0 6.0 104.1 327.9 383.4 516.1 498.4 374.1 247.3 20.1 0.0 2477.4 HEATING DEG. DAYS(BASE 18 0C) 161.3 99.0 28.3 0.0 0.0 0.0 0.0 0.0 0.0 0.0 39.9 169.4 497.8 DEWPOINT (MEAN C) 4.5 8.6 10.2 15.7 11.5 10.5 16.1 19.2 14.6 14.1 10.3 8.2 12.0 MIXING RATIO (G/KG) 5.45 7.06 7.93 11.36 8.97 8.55 12.29 15.16 11.14 10.64 8.16 6.91 9.47 VAPOUR PRESSURE (HPA) 8.82 11.38 12.72 18.06 14.25 13.49 19.24 23.66 17.62 16.95 13.10 11.17 15.04 SATURATION DEF. (HPA) 6.00 5.15 8.41 13.25 35.33 43.59 49.94 41.01 37.42 25.09 8.78 3.44 23.12 RELATIVE HUMIDITY (MEAN %) 62 72 64 62 33 26 31 41 37 44 63 78 51 RELATIVE HUMIDITY (MAX. %) 80 89 84 81 51 41 48 66 60 66 81 92 70 RELATIVE HUMIDITY (MIN. %) 40 50 40 43 19 14 17 20 16 26 43 59 32 RELATIVE HUMIDITY (MEAN% 03UTC) 77 86 80 77 46 39 45 61 56 62 74 88 66 RELATIVE HUMIDITY (MEAN% 09UTC) 48 62 50 48 22 19 21 28 23 32 52 67 39 RELATIVE HUMIDITY (MEAN% 15UTC) 56 62 52 49 25 19 22 25 22 35 58 76 42 RH=0 => RELATIVE HUMIDITY < 0.5% AMOUNT OF PRECIPITATION MM. 2.0 80.8 72.3 59.0 6.0 0.0 0.0 0.0 0.0 1.0 105.9 83.8 410.8 DAYS WITH PRECIPITATION >=10 0 4 2 1 0 0 0 0 0 0 5 1 13 DAYS WITH PRECIPITATION >= 5 0 5 2 3 1 0 0 0 0 0 6 2 19 DAYS WITH PRECIPITATION >= 1 0 9 8 5 1 0 0 0 0 1 7 3 34 DAYS WITH PRECIPITATION 5 11 10 9 3 0 0 0 0 1 11 6 56 GREATEST DAILY PRECIPITATION 1.0 25.1 43.0 39.0 5.3 0.0 0.0 0.0 0.0 1.0 27.8 73.0 73.0 DAY 30 18 7 10 4 ** ** ** ** 22 29 20 DAY WITH THUNDER STORM 1 8 5 7 0 0 0 2 0 0 9 3 35 DAYS WITH SNOW OR SLEET 0 0 0 0 0 0 0 0 0 0 0 0 0 DAYS WITH DUST 6 1 5 5 20 15 24 25 16 16 6 4 143 WIND DIRECTION (PREVAILING) 315 315 315 315 315 315 315 180 315 315 315 315 315 PREVAILING WIND SPEED(KNOTS) 9.0 7.9 10.0 9.6 11.2 12.5 11.8 10.3 8.7 9.8 10.2 8.5 10.4 PREVAILING WIND PERCENT 23.8 22.3 21.8 20.8 31.9 58.8 26.7 25.0 14.2 21.0 25.8 26.5 25.2 CALMS PERCENT OF WIND 52.4 39.3 35.9 37.5 21.0 17.5 22.1 25.8 34.6 37.9 40.8 47.8 34.4 NO. OF WIND OBSERVATION 248 224 248 240 248 240 240 248 240 248 240 245 2909 VECTOR WIND DIRECTION (MEAN) 305 217 230 299 324 316 272 209 231 300 329 277 286 VECTOR WIND MAGNITUDE(KNOTS) 1.8 0.9 1.0 1.5 3.1 8.7 4.5 4.0 1.8 1.4 0.9 0.8 1.9 WIND STEADINESES (MEAN %) 43.9 15.5 14.9 25.0 33.3 89.7 52.9 51.9 31.0 24.6 13.6 15.7 27.9 WIND SPEED (MEAN KNOTS) 4.1 5.8 6.7 6.0 9.3 9.7 8.5 7.7 5.8 5.7 6.6 5.1 6.8 FASTEST WIND DIRECTION 160 150 180 170 10 300 330 340 60 330 180 150 180 FASTEST WIND SPEED (KNOTS) 27 39 49 43 33 39 35 29 31 29 43 41 49 DAY 15 14 15 10 26 19 27 25 6 16 8 28 DAYS WITH SKY CLEAR (0-2)/8 19 12 14 9 11 28 29 31 30 27 11 20 241 DAYS WITH P.CLOUDY (3-6)/8 7 11 10 9 16 2 2 0 0 4 10 4 75 DAYS WITH CLOUDY (7-8)/8 5 5 7 12 4 0 0 0 0 0 9 7 49 DAYS WITH VISIBILITY =< 2 KM 3 5 1 1 0 2 0 3 3 2 2 4 26 DURATION OF SUNSHINE HOURS 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 ****** 0.0 0.0 ****** ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION OMIDIYEH (PAYGAH) (40830) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 30 46 N LONGITUDE 49 39 E DATA PROCESSING CENTER ELEVATION 34.9 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 1016.9 1013.9 1010.6 1007.5 1004.3 996.9 995.1 997.0 1003.9 1009.4 1013.8 1017.7 1007.3 MAX. QFE PRESSURE IN HPA 1024.0 1020.8 1017.5 1014.0 1010.4 1006.4 1000.1 1003.0 1011.0 1016.0 1021.1 1023.8 1024.0 DAY-HOUR 1- 6 22- 6 4- 6 15- 6 6- 6 2- 6 31- 6 29- 6 23- 6 21- 6 15- 6 22- 6 MIN. QFE PRESSURE IN HPA 1008.2 1007.2 1000.0 1001.4 998.3 990.8 988.7 990.7 997.6 1002.3 1003.6 1008.7 988.7 DAY-HOUR 12-12 14-12 15-12 19- 0 29-15 24-15 19-15 5-15 5-15 1- 3 8-12 1-15 MEAN QNH PRESSURE IN HPA 1020.8 1017.8 1014.5 1011.4 1008.1 1000.7 999.0 1000.9 1007.8 1013.3 1017.7 1021.6 1011.1 MAX. QNH PRESSURE IN HPA 1027.9 1024.7 1021.4 1017.9 1014.3 1010.3 1004.0 1006.9 1014.9 1019.9 1025.0 1027.7 1027.9 DAY-HOUR 1- 6 22- 6 4- 6 15- 6 6- 6 2- 6 31- 6 29- 6 23- 6 21- 6 15- 6 22- 6 MIN. QNH PRESSURE IN HPA 1012.1 1011.1 1003.9 1005.3 1002.1 994.6 992.5 994.5 1001.4 1006.2 1007.5 1012.6 992.5 DAY-HOUR 12-12 14-12 15-12 19- 0 29-15 24-15 19-15 5-15 5-15 1- 3 8-12 1-15 MEAN QFF PRESSURE IN HPA 1021.1 1018.1 1014.8 1011.5 1008.2 1000.7 999.0 1000.8 1007.8 1013.4 1017.9 1021.8 1011.3 MAX. QFF PRESSURE IN HPA 1028.3 1025.0 1021.7 1018.1 1014.4 1010.3 1003.9 1006.9 1014.9 1020.0 1025.4 1028.1 1028.3 DAY-HOUR 1- 6 22- 6 4- 6 15- 6 6- 6 2- 6 31- 6 29- 6 23- 6 21- 6 15- 6 22- 6 MIN. QFF PRESSURE IN HPA 1012.4 1011.3 1004.0 1005.4 1002.2 994.6 992.4 994.5 1001.5 1006.2 1007.6 1012.8 992.4 DAY-HOUR 12-12 14-12 15-12 19- 0 29-15 24-15 19-15 5-15 5-15 1- 3 8-12 1-15 PRESSURE AT HOUR 0000 UTC. MEAN QFE PRESSURE IN HPA 1016.8 1013.8 1010.5 1007.0 1004.1 997.0 995.0 997.0 1003.8 1009.0 1013.7 1017.3 1007.1 MAX. QFE PRESSURE IN HPA 1022.2 1018.8 1015.8 1011.6 1009.4 1004.5 998.6 1001.1 1008.3 1013.4 1019.4 1023.5 1023.5 DAY 1 22 28 12 7 2 3 25 23 21 15 23 MIN. QFE PRESSURE IN HPA 1009.2 1008.0 1005.6 1001.4 999.4 992.2 989.4 992.8 998.7 1003.0 1005.4 1008.8 989.4 DAY 20 25 15 19 29 25 19 6 6 1 8 1 MEAN QNH PRESSURE IN HPA 1020.7 1017.7 1014.4 1010.9 1008.0 1000.8 998.9 1000.8 1007.6 1012.8 1017.6 1021.2 1011.0 MAX. QNH PRESSURE IN HPA 1026.1 1022.7 1019.7 1015.5 1013.3 1008.4 1002.4 1005.0 1012.2 1017.3 1023.3 1027.4 1027.4 DAY 1 22 28 12 7 2 3 25 23 21 15 23 MIN. QNH PRESSURE IN HPA 1013.1 1011.9 1009.5 1005.3 1003.3 996.0 993.2 996.6 1002.6 1006.9 1009.3 1012.7 993.2 DAY 20 25 15 19 29 25 19 6 6 1 8 1 MEAN QFF PRESSURE IN HPA 1021.0 1018.0 1014.7 1011.0 1008.0 1000.8 998.8 1000.8 1007.6 1012.9 1017.9 1021.5 1011.1 MAX. QFF PRESSURE IN HPA 1026.5 1023.0 1019.9 1015.7 1013.4 1008.4 1002.4 1004.9 1012.2 1017.3 1023.6 1027.8 1027.8 DAY 1 22 28 12 7 2 3 25 23 21 15 23 MIN. QFF PRESSURE IN HPA 1013.4 1012.1 1009.6 1005.4 1003.2 996.0 993.1 996.6 1002.5 1006.9 1009.4 1012.9 993.1 DAY 20 25 15 19 29 29 19 6 6 2 8 1 PRESSURE AT HOUR 0300 UTC. MEAN QFE PRESSURE IN HPA 1017.1 1013.9 1010.5 1007.6 1004.6 997.2 995.4 997.5 1004.2 1009.5 1014.0 1017.2 1007.4 MAX. QFE PRESSURE IN HPA 1023.0 1019.0 1016.3 1012.9 1009.6 1004.9 999.1 1002.8 1009.3 1014.3 1019.4 1022.0 1023.0 DAY 1 22 4 5 6 2 31 29 23 21 15 4 MIN. QFE PRESSURE IN HPA 1010.9 1010.2 1003.0 1003.4 999.9 991.7 990.0 993.0 999.4 1002.3 1005.8 1009.6 990.0 DAY 12 6 15 19 29 25 19 5 5 1 8 1 MEAN QNH PRESSURE IN HPA 1021.0 1017.8 1014.4 1011.5 1008.4 1001.1 999.2 1001.3 1008.0 1013.4 1017.9 1021.2 1011.3 MAX. QNH PRESSURE IN HPA 1026.9 1022.9 1020.2 1016.8 1013.5 1008.8 1003.0 1006.7 1013.2 1018.2 1023.3 1025.9 1026.9 DAY 1 22 4 5 6 2 31 29 23 21 15 4 MIN. QNH PRESSURE IN HPA 1014.8 1014.1 1006.9 1007.3 1003.8 995.5 993.8 996.8 1003.3 1006.2 1009.7 1013.5 993.8 DAY 12 6 15 19 29 25 19 5 5 1 8 1 MEAN QFF PRESSURE IN HPA 1021.3 1018.1 1014.7 1011.6 1008.5 1001.1 999.2 1001.3 1008.1 1013.5 1018.1 1021.5 1011.4 MAX. QFF PRESSURE IN HPA 1027.3 1023.2 1020.5 1016.9 1013.6 1008.8 1002.9 1006.7 1013.2 1018.3 1023.7 1026.3 1027.3 DAY 1 22 4 5 6 2 31 29 23 26 16 4 MIN. QFF PRESSURE IN HPA 1015.1 1014.3 1007.1 1007.3 1003.7 995.5 993.8 996.8 1003.3 1006.2 1009.8 1013.7 993.8 DAY 12 6 15 25 29 25 19 5 5 1 8 20 ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION OMIDIYEH (PAYGAH) (40830) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 30 46 N LONGITUDE 49 39 E DATA PROCESSING CENTER ELEVATION 34.9 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 1018.4 1015.4 1011.8 1008.8 1005.3 997.9 996.2 998.3 1005.5 1011.0 1015.2 1018.7 1008.5 MAX. QFE PRESSURE IN HPA 1024.0 1020.8 1017.5 1014.0 1010.4 1006.4 1000.1 1003.0 1011.0 1016.0 1021.1 1023.8 1024.0 DAY 1 22 4 15 6 2 31 29 23 21 15 22 MIN. QFE PRESSURE IN HPA 1011.4 1011.2 1003.2 1005.5 999.9 992.8 991.2 993.0 1000.1 1004.1 1006.2 1010.9 991.2 DAY 12 25 15 26 29 25 19 5 5 1 8 1 MEAN QNH PRESSURE IN HPA 1022.4 1019.3 1015.7 1012.7 1009.2 1001.7 1000.1 1002.1 1009.4 1014.9 1019.1 1022.6 1012.4 MAX. QNH PRESSURE IN HPA 1027.9 1024.7 1021.4 1017.9 1014.3 1010.3 1004.0 1006.9 1014.9 1019.9 1025.0 1027.7 1027.9 DAY 1 22 4 15 6 2 31 29 23 21 15 22 MIN. QNH PRESSURE IN HPA 1015.3 1015.1 1007.1 1009.4 1003.8 996.6 995.0 996.8 1004.0 1008.0 1010.1 1014.8 995.0 DAY 12 25 15 26 29 25 19 5 5 1 8 1 MEAN QFF PRESSURE IN HPA 1022.7 1019.6 1015.9 1012.8 1009.2 1001.7 1000.3 1002.1 1009.4 1015.0 1019.3 1022.8 1012.6 MAX. QFF PRESSURE IN HPA 1028.3 1025.0 1021.7 1018.1 1014.4 1010.3 1003.9 1006.9 1014.9 1020.0 1025.4 1028.1 1028.3 DAY 1 22 4 15 6 2 31 29 23 21 15 22 MIN. QFF PRESSURE IN HPA 1015.6 1015.4 1007.3 1009.5 1003.7 996.6 995.0 996.8 1003.9 1008.0 1010.2 1015.0 995.0 DAY 12 25 15 26 29 25 19 5 5 1 8 1 PRESSURE AT HOUR 0900 UTC. MEAN QFE PRESSURE IN HPA 1017.5 1014.7 1011.4 1008.4 1004.9 997.5 995.7 997.7 1004.8 1010.2 1014.2 1018.1 1007.9 MAX. QFE PRESSURE IN HPA 1023.0 1019.9 1017.1 1013.7 1010.0 1005.9 999.1 1002.5 1009.9 1015.2 1020.3 1023.2 1023.2 DAY 1 22 3 12 6 2 31 29 23 20 15 22 MIN. QFE PRESSURE IN HPA 1010.0 1009.9 1001.3 1003.9 999.2 992.4 991.1 992.5 999.3 1004.2 1004.6 1011.2 991.1 DAY 12 18 15 2 29 27 19 5 5 1 8 1 MEAN QNH PRESSURE IN HPA 1021.4 1018.6 1015.3 1012.3 1008.8 1001.3 999.5 1001.6 1008.7 1014.1 1018.1 1022.0 1011.8 MAX. QNH PRESSURE IN HPA 1026.9 1023.8 1021.0 1017.6 1013.9 1009.8 1003.0 1006.4 1013.8 1019.1 1024.2 1027.1 1027.1 DAY 1 22 3 12 6 2 31 29 23 20 15 22 MIN. QNH PRESSURE IN HPA 1013.9 1013.8 1005.2 1007.8 1003.1 996.2 994.9 996.3 1003.2 1008.1 1008.5 1015.1 994.9 DAY 12 18 15 2 29 27 19 5 5 1 8 1 MEAN QFF PRESSURE IN HPA 1021.7 1018.9 1015.5 1012.4 1008.8 1001.3 999.6 1001.5 1008.7 1014.1 1018.3 1022.2 1011.9 MAX. QFF PRESSURE IN HPA 1027.3 1024.1 1021.2 1017.8 1014.0 1009.8 1002.9 1006.3 1013.8 1019.2 1024.5 1027.5 1027.5 DAY 1 22 3 12 6 2 31 29 23 20 15 22 MIN. QFF PRESSURE IN HPA 1014.2 1014.1 1005.3 1007.9 1003.0 996.2 994.8 996.3 1003.1 1008.1 1008.6 1015.3 994.8 DAY 12 18 15 2 29 27 19 5 5 1 8 1 PRESSURE AT HOUR 1200 UTC. MEAN QFE PRESSURE IN HPA 1015.7 1012.9 1009.8 1007.2 1003.5 996.2 994.3 996.1 1002.8 1008.5 1012.8 1016.7 1006.4 MAX. QFE PRESSURE IN HPA 1021.0 1017.8 1015.5 1013.0 1008.6 1005.0 997.4 1000.5 1007.5 1013.5 1019.0 1022.6 1022.6 DAY 1 21 3 5 6 2 3 29 22 21 15 22 MIN. QFE PRESSURE IN HPA 1008.2 1007.2 1000.0 1003.6 998.8 991.3 989.5 991.3 997.7 1003.0 1003.6 1008.8 989.5 DAY 12 14 15 18 29 24 19 5 5 1 8 1 MEAN QNH PRESSURE IN HPA 1019.6 1016.8 1013.7 1011.1 1007.4 1000.0 998.1 999.9 1006.7 1012.4 1016.7 1020.6 1010.3 MAX. QNH PRESSURE IN HPA 1024.9 1021.7 1019.4 1016.9 1012.5 1008.9 1001.2 1004.4 1011.4 1017.4 1022.9 1026.5 1026.5 DAY 1 21 3 5 6 2 3 29 22 21 15 22 MIN. QNH PRESSURE IN HPA 1012.1 1011.1 1003.9 1007.5 1002.7 995.1 993.3 995.1 1001.5 1006.9 1007.5 1012.7 993.3 DAY 12 14 15 18 29 24 19 5 5 1 8 1 MEAN QFF PRESSURE IN HPA 1019.9 1017.1 1013.9 1011.2 1007.4 1000.0 998.2 999.9 1006.7 1012.5 1016.9 1020.8 1010.4 MAX. QFF PRESSURE IN HPA 1025.3 1022.0 1019.6 1017.0 1012.6 1008.9 1001.2 1004.3 1011.4 1017.5 1023.2 1026.8 1026.8 DAY 1 21 3 5 6 2 3 29 22 21 15 22 MIN. QFF PRESSURE IN HPA 1012.4 1011.3 1004.0 1007.6 1002.6 995.1 993.2 995.1 1001.5 1006.9 1007.6 1012.9 993.2 DAY 12 14 15 18 29 24 19 5 5 1 8 1 ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION OMIDIYEH (PAYGAH) (40830) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 30 46 N LONGITUDE 49 39 E DATA PROCESSING CENTER ELEVATION 34.9 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 1016.1 1013.1 1009.7 1006.5 1003.1 995.6 993.7 995.7 1002.5 1008.6 1013.0 1017.2 1006.2 MAX. QFE PRESSURE IN HPA 1021.1 1017.7 1015.5 1011.6 1008.4 1004.1 997.0 999.9 1007.0 1013.3 1019.4 1022.2 1022.2 DAY 21 21 3 12 6 2 30 29 22 21 15 21 MIN. QFE PRESSURE IN HPA 1008.7 1008.2 1000.3 1002.8 998.3 990.8 988.7 990.7 997.6 1002.6 1004.2 1008.7 988.7 DAY 19 14 15 18 29 24 19 5 5 1 8 1 MEAN QNH PRESSURE IN HPA 1020.0 1017.0 1013.6 1010.4 1007.0 999.4 997.5 999.5 1006.4 1012.4 1016.9 1021.2 1010.1 MAX. QNH PRESSURE IN HPA 1025.0 1021.6 1019.4 1015.5 1012.3 1008.0 1000.8 1003.8 1010.9 1017.2 1023.3 1026.1 1026.1 DAY 21 21 3 12 6 2 30 29 22 21 15 21 MIN. QNH PRESSURE IN HPA 1012.6 1012.1 1004.2 1006.7 1002.1 994.6 992.5 994.5 1001.4 1006.5 1008.1 1012.6 992.5 DAY 19 14 15 18 29 24 19 5 5 1 8 1 MEAN QFF PRESSURE IN HPA 1020.3 1017.3 1013.8 1010.6 1007.1 999.5 997.5 999.5 1006.4 1012.5 1017.1 1021.5 1010.3 MAX. QFF PRESSURE IN HPA 1025.4 1021.9 1019.7 1015.7 1012.4 1008.0 1000.8 1003.8 1010.9 1017.3 1023.6 1026.5 1026.5 DAY 21 21 3 12 6 2 30 29 22 21 15 21 MIN. QFF PRESSURE IN HPA 1012.9 1012.3 1004.4 1006.8 1002.2 994.6 992.4 994.5 1001.5 1006.5 1008.2 1012.8 992.4 DAY 19 14 15 18 29 24 19 5 5 1 8 1 PRESSURE AT HOUR 1800 UTC. MEAN QFE PRESSURE IN HPA 1017.0 1013.9 1010.7 1007.3 1004.2 996.7 995.2 996.9 1003.7 1009.4 1013.8 1018.1 1007.2 MAX. QFE PRESSURE IN HPA 1022.3 1019.1 1016.8 1012.8 1009.4 1005.2 998.4 1002.5 1008.3 1014.3 1019.5 1023.2 1023.2 DAY 21 21 3 14 6 2 31 28 22 20 15 21 MIN. QFE PRESSURE IN HPA 1009.7 1009.0 1002.2 1002.6 999.2 991.6 990.7 992.0 999.0 1003.3 1006.0 1009.9 990.7 DAY 19 9 15 18 28 24 18 5 5 1 8 1 MEAN QNH PRESSURE IN HPA 1020.9 1017.8 1014.6 1011.2 1008.1 1000.5 999.1 1000.7 1007.6 1013.3 1017.7 1022.0 1011.1 MAX. QNH PRESSURE IN HPA 1026.2 1023.0 1020.7 1016.7 1013.3 1009.1 1002.2 1006.4 1012.2 1018.2 1023.4 1027.1 1027.1 DAY 21 21 3 14 6 2 31 28 22 20 15 21 MIN. QNH PRESSURE IN HPA 1013.6 1012.9 1006.1 1006.5 1003.1 995.4 994.5 995.8 1002.9 1007.2 1009.9 1013.8 994.5 DAY 19 9 15 18 28 24 18 5 5 1 8 1 MEAN QFF PRESSURE IN HPA 1021.2 1018.1 1014.8 1011.3 1008.1 1000.5 999.0 1000.7 1007.6 1013.4 1017.9 1022.3 1011.3 MAX. QFF PRESSURE IN HPA 1026.7 1023.3 1021.0 1016.9 1013.4 1009.1 1002.2 1006.4 1012.2 1018.3 1023.7 1027.5 1027.5 DAY 21 21 3 14 6 2 31 28 22 20 15 21 MIN. QFF PRESSURE IN HPA 1013.9 1013.2 1006.3 1006.6 1003.0 995.4 994.5 995.8 1002.8 1007.2 1010.0 1014.0 994.5 DAY 19 9 15 18 28 24 18 5 5 1 8 1 PRESSURE AT HOUR 2100 UTC. MEAN QFE PRESSURE IN HPA 1016.8 1013.8 1010.9 1007.4 1004.5 997.1 995.7 997.3 1004.0 1009.5 1013.7 1018.1 1007.4 MAX. QFE PRESSURE IN HPA 1022.2 1019.1 1016.6 1012.3 1009.8 1005.0 999.5 1001.6 1009.4 1014.0 1018.9 1023.5 1023.5 DAY 21 21 3 14 5 1 31 28 22 20 14 31 MIN. QFE PRESSURE IN HPA 1010.2 1008.2 1004.9 1002.1 999.6 992.0 990.9 992.4 998.9 1003.4 1006.6 1009.0 990.9 DAY 19 9 7 18 27 24 19 5 5 1 7 1 MEAN QNH PRESSURE IN HPA 1020.7 1017.7 1014.7 1011.3 1008.4 1001.0 999.5 1001.2 1007.9 1013.4 1017.6 1022.0 1011.3 MAX. QNH PRESSURE IN HPA 1026.1 1023.0 1020.5 1016.2 1013.7 1008.9 1003.4 1005.5 1013.3 1017.9 1022.8 1027.4 1027.4 DAY 21 21 3 14 5 1 31 28 22 20 14 31 MIN. QNH PRESSURE IN HPA 1014.1 1012.1 1008.8 1006.0 1003.5 995.8 994.7 996.2 1002.8 1007.3 1010.5 1012.9 994.7 DAY 19 9 7 18 27 24 19 5 5 1 7 1 MEAN QFF PRESSURE IN HPA 1021.1 1018.0 1015.0 1011.4 1008.4 1001.0 999.5 1001.1 1007.9 1013.5 1017.8 1022.3 1011.4 MAX. QFF PRESSURE IN HPA 1026.5 1023.3 1020.8 1016.3 1013.8 1008.9 1003.3 1005.4 1013.3 1018.0 1023.1 1027.8 1027.8 DAY 21 21 3 14 5 1 31 28 22 20 14 31 MIN. QFF PRESSURE IN HPA 1014.4 1012.3 1009.0 1006.1 1003.4 995.8 994.6 996.2 1002.7 1007.3 1010.6 1013.1 994.6 DAY 19 9 7 18 27 24 19 5 5 1 7 1 ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION OMIDIYEH (PAYGAH) (40830) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 30 46 N LONGITUDE 49 39 E DATA PROCESSING CENTER ELEVATION 34.9 M MEANS AND EXTREMES FOR THE YEAR 1987 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AIR TEMPERATURE (C) 12.3 15.7 17.4 24.7 33.4 35.4 37.4 36.3 32.5 26.1 19.1 13.7 25.3 MINIMUN AIR TEMPERATURE (C) 7.1 9.6 12.5 16.4 23.9 25.2 27.3 27.0 23.2 19.4 12.0 9.0 17.7 DAYS WITH MINIMUM TEMP. >=21 0 0 0 7 27 29 31 29 24 9 0 0 156 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) 3.2 5.8 6.0 10.6 19.0 20.0 24.8 20.0 19.0 13.0 6.0 1.0 1.0 DAY 29 14 22 1 10 6 11 28 22 10 29 30 MAXIMUM AIR TEMPERATURE (C) 19.0 23.1 23.0 32.4 41.9 44.9 47.3 45.7 42.7 33.9 28.3 20.3 33.5 DAYS WITH MAXIMUM TEMP. >=30 0 0 1 21 31 30 31 31 30 25 15 0 215 DAYS WITH MAXIMUM TEMP. <= 0 0 0 0 0 0 0 0 0 0 0 0 0 0 TEMPERATURE RECORDS HIGHEST(C) 23.4 28.6 31.2 43.0 44.6 49.0 50.2 51.0 47.0 41.0 33.0 26.0 51.0 DAY 23 28 11 30 15 29 19 13 6 1 14 19 DIF. BETWEEN (MAX.-MIN.) (C) 11.9 13.5 10.5 16.0 18.0 19.7 20.0 18.7 19.5 14.5 16.3 11.3 15.8 MEAN DAILY TEMP. (MDT) (C) 13.1 16.4 17.7 24.4 32.9 35.1 37.3 36.4 33.0 26.7 20.1 14.7 25.6 COOLING DEG. DAYS(BASE 21 0C) 0.0 0.0 5.7 118.9 368.4 422.1 505.4 477.0 358.5 177.8 24.3 0.0 2458.3 HEATING DEG. DAYS(BASE 18 0C) 154.6 50.4 39.2 0.9 0.0 0.0 0.0 0.0 0.0 0.0 12.1 109.2 366.3 DEWPOINT (MEAN C) 6.9 7.5 9.8 6.7 8.7 12.0 11.7 17.1 12.8 13.5 6.4 7.1 10.0 MIXING RATIO (G/KG) 6.24 6.56 7.82 6.32 7.23 9.31 9.18 13.74 9.78 10.11 6.22 6.69 8.27 VAPOUR PRESSURE (HPA) 10.11 10.58 12.54 10.14 11.54 14.71 14.45 21.43 15.49 16.13 10.03 10.81 13.16 SATURATION DEF. (HPA) 4.79 8.06 7.98 23.24 42.84 46.36 53.76 42.81 36.63 19.61 13.52 5.67 25.44 RELATIVE HUMIDITY (MEAN %) 72 62 64 36 25 27 24 37 34 50 47 70 46 RELATIVE HUMIDITY (MAX. %) 89 82 84 57 42 44 39 58 54 68 67 86 64 RELATIVE HUMIDITY (MIN. %) 47 36 41 19 12 14 12 19 17 33 24 48 27 RELATIVE HUMIDITY (MEAN% 03UTC) 86 75 79 54 38 40 36 52 50 60 64 79 59 RELATIVE HUMIDITY (MEAN% 09UTC) 60 47 52 22 15 18 16 27 22 40 31 54 34 RELATIVE HUMIDITY (MEAN% 15UTC) 67 52 55 24 16 19 17 24 23 46 39 68 38 RH=0 => RELATIVE HUMIDITY < 0.5% AMOUNT OF PRECIPITATION MM. 7.4 22.1 103.1 3.4 0.0 0.0 0.1 0.0 0.0 35.3 0.0 66.4 237.8 DAYS WITH PRECIPITATION >=10 0 0 2 0 0 0 0 0 0 1 0 4 7 DAYS WITH PRECIPITATION >= 5 1 3 5 0 0 0 0 0 0 3 0 6 18 DAYS WITH PRECIPITATION >= 1 1 5 11 1 0 0 0 0 0 4 0 6 28 DAYS WITH PRECIPITATION 4 6 13 5 0 0 1 0 0 7 0 8 44 GREATEST DAILY PRECIPITATION 7.0 6.0 55.0 3.0 0.0 0.0 0.1 0.0 0.0 23.0 0.0 18.0 55.0 DAY 6 10 4 5 ** ** 30 ** ** 26 ** 6 DAY WITH THUNDER STORM 4 6 9 1 0 0 2 0 0 4 1 4 31 DAYS WITH SNOW OR SLEET 0 0 0 0 0 0 0 0 0 0 0 0 0 DAYS WITH DUST 8 3 13 18 23 29 30 16 21 12 7 7 187 WIND DIRECTION (PREVAILING) 315 315 315 315 315 315 315 315 315 315 315 315 315 PREVAILING WIND SPEED(KNOTS) 7.3 7.3 9.6 10.6 11.6 12.4 11.0 11.0 9.0 8.2 9.5 9.0 10.0 PREVAILING WIND PERCENT 25.0 18.3 21.0 30.8 32.3 43.8 30.2 29.0 21.3 20.2 38.3 33.5 28.7 CALMS PERCENT OF WIND 48.8 45.1 27.8 22.9 21.0 14.6 25.0 27.4 42.1 24.6 33.8 28.6 30.0 NO. OF WIND OBSERVATION 248 224 248 240 248 240 248 248 240 248 240 248 2920 VECTOR WIND DIRECTION (MEAN) 247 167 247 306 305 303 291 278 272 222 320 289 292 VECTOR WIND MAGNITUDE(KNOTS) 0.7 1.5 0.6 2.6 4.4 5.5 4.1 3.5 2.0 0.7 3.8 0.7 2.2 WIND STEADINESES (MEAN %) 14.6 27.8 7.7 32.1 51.2 55.6 50.6 50.0 38.5 10.4 65.5 10.1 31.4 WIND SPEED (MEAN KNOTS) 4.8 5.4 7.8 8.1 8.6 9.9 8.1 7.0 5.2 6.7 5.8 6.9 7.0 FASTEST WIND DIRECTION 150 150 220 190 350 340 320 70 180 350 180 160 220 FASTEST WIND SPEED (KNOTS) 35 39 49 31 39 35 35 27 23 39 21 33 49 DAY 6 9 4 19 12 5 2 7 19 19 7 24 DAYS WITH SKY CLEAR (0-2)/8 22 18 10 14 14 30 29 30 30 13 25 15 250 DAYS WITH P.CLOUDY (3-6)/8 6 7 11 9 14 0 1 1 0 9 4 10 72 DAYS WITH CLOUDY (7-8)/8 3 3 10 7 3 0 1 0 0 9 1 6 43 DAYS WITH VISIBILITY =< 2 KM 4 2 3 1 1 10 5 5 3 4 1 5 44 DURATION OF SUNSHINE HOURS ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 185.9 ****** ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION OMIDIYEH (PAYGAH) (40830) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 30 46 N LONGITUDE 49 39 E DATA PROCESSING CENTER ELEVATION 34.9 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 1018.9 1014.9 1010.7 1009.9 1004.2 998.9 995.8 996.6 1002.7 1009.8 1014.1 1017.4 1007.8 MAX. QFE PRESSURE IN HPA 1024.7 1020.7 1016.7 1018.1 1010.5 1004.8 1002.2 1001.9 1010.3 1017.3 1019.8 1023.2 1024.7 DAY-HOUR 28- 6 1- 0 15- 6 22- 6 12- 9 1- 6 29-21 7- 6 30- 6 30- 6 30- 6 2- 6 MIN. QFE PRESSURE IN HPA 1008.4 1007.3 1002.8 1002.8 998.4 993.3 990.0 990.5 996.9 1002.5 1008.7 1009.0 990.0 DAY-HOUR 6-12 28-15 13-21 25-15 29-15 8-15 26-15 13-15 10-12 4-12 25-12 23-21 MEAN QNH PRESSURE IN HPA 1022.8 1018.8 1014.6 1013.8 1008.0 1002.7 999.6 1000.4 1006.5 1013.6 1018.0 1021.4 1011.7 MAX. QNH PRESSURE IN HPA 1028.6 1024.6 1020.6 1022.0 1014.4 1008.7 1006.1 1005.8 1014.2 1021.2 1023.7 1027.1 1028.6 DAY-HOUR 28- 6 1- 0 15- 6 22- 6 12- 9 1- 6 29-21 7- 6 30- 6 30- 6 30- 6 2- 6 MIN. QNH PRESSURE IN HPA 1012.3 1011.2 1006.7 1006.7 1002.2 997.1 993.8 994.3 1000.7 1006.4 1012.6 1012.9 993.8 DAY-HOUR 6-12 28-15 13-21 25-15 29-15 8-15 26-15 13-15 10-12 4-12 25-12 23-21 MEAN QFF PRESSURE IN HPA 1023.2 1019.1 1014.8 1013.9 1008.1 1002.7 999.6 1000.4 1006.6 1013.8 1018.3 1021.7 1011.8 MAX. QFF PRESSURE IN HPA 1029.0 1024.9 1021.0 1022.2 1014.4 1008.7 1006.0 1005.7 1014.3 1021.4 1024.0 1027.5 1029.0 DAY-HOUR 28- 6 1- 0 15- 6 22- 6 12- 9 1- 6 29-21 7- 6 30- 6 30- 6 30- 6 2- 6 MIN. QFF PRESSURE IN HPA 1012.6 1011.4 1006.8 1006.8 1002.3 997.1 993.8 994.3 1000.8 1006.4 1012.8 1013.1 993.8 DAY-HOUR 6-12 28-15 13-21 25-15 29-15 8-15 26-15 13-15 10-12 4-12 25-12 23-21 PRESSURE AT HOUR 0000 UTC. MEAN QFE PRESSURE IN HPA 1018.8 1014.7 1010.4 1009.9 1003.9 998.9 995.6 996.3 1002.4 1009.2 1013.7 1017.4 1007.6 MAX. QFE PRESSURE IN HPA 1023.2 1020.7 1014.4 1017.4 1007.5 1002.3 999.4 1001.1 1007.8 1014.9 1017.7 1021.6 1023.2 DAY 29 1 2 22 12 1 30 8 30 28 30 2 MIN. QFE PRESSURE IN HPA 1013.9 1007.8 1004.3 1003.6 999.3 994.7 991.5 991.5 997.9 1002.7 1009.6 1009.2 991.5 DAY 6 18 14 4 30 9 27 14 11 4 3 24 MEAN QNH PRESSURE IN HPA 1022.7 1018.6 1014.2 1013.8 1007.8 1002.8 999.5 1000.2 1006.2 1013.1 1017.6 1021.3 1011.5 MAX. QNH PRESSURE IN HPA 1027.1 1024.6 1018.3 1021.3 1011.4 1006.2 1003.3 1005.0 1011.7 1018.8 1021.6 1025.5 1027.1 DAY 29 1 2 22 12 1 30 8 30 28 30 2 MIN. QNH PRESSURE IN HPA 1017.8 1011.7 1008.2 1007.5 1003.2 998.5 995.3 995.3 1001.7 1006.6 1013.5 1013.1 995.3 DAY 6 18 14 4 30 9 27 14 11 4 3 24 MEAN QFF PRESSURE IN HPA 1023.0 1018.9 1014.5 1013.9 1007.8 1002.7 999.4 1000.1 1006.2 1013.2 1017.8 1021.6 1011.6 MAX. QFF PRESSURE IN HPA 1027.5 1024.9 1018.5 1021.5 1011.4 1006.2 1003.2 1004.9 1011.7 1019.0 1021.9 1025.8 1027.5 DAY 29 1 2 22 12 1 30 8 30 28 30 2 MIN. QFF PRESSURE IN HPA 1018.1 1011.9 1008.4 1007.6 1003.1 998.5 995.3 995.2 1001.8 1006.6 1013.6 1013.3 995.2 DAY 6 18 14 4 30 9 27 14 11 4 3 24 PRESSURE AT HOUR 0300 UTC. MEAN QFE PRESSURE IN HPA 1018.8 1014.8 1010.3 1010.1 1004.4 999.3 996.0 997.0 1002.8 1009.7 1014.1 1017.5 1007.9 MAX. QFE PRESSURE IN HPA 1022.6 1019.7 1015.0 1017.4 1009.0 1003.7 999.2 1001.0 1008.5 1014.8 1017.8 1022.2 1022.6 DAY 17 1 15 22 12 1 31 8 30 28 30 2 MIN. QFE PRESSURE IN HPA 1013.5 1008.1 1004.5 1003.0 1000.2 995.1 992.3 993.0 998.0 1003.3 1009.1 1010.8 992.3 DAY 6 18 13 19 30 9 26 14 11 4 7 13 MEAN QNH PRESSURE IN HPA 1022.7 1018.7 1014.2 1013.9 1008.2 1003.2 999.8 1000.9 1006.7 1013.6 1018.0 1021.4 1011.8 MAX. QNH PRESSURE IN HPA 1026.5 1023.6 1018.9 1021.3 1012.9 1007.6 1003.1 1004.9 1012.4 1018.7 1021.7 1026.1 1026.5 DAY 17 1 15 22 12 1 31 8 30 28 30 2 MIN. QNH PRESSURE IN HPA 1017.4 1012.0 1008.4 1006.9 1004.1 998.9 996.1 996.8 1001.8 1007.2 1013.0 1014.7 996.1 DAY 6 18 13 19 30 9 26 14 11 4 7 13 MEAN QFF PRESSURE IN HPA 1023.1 1019.0 1014.5 1014.1 1008.3 1003.2 999.8 1000.8 1006.7 1013.8 1018.2 1021.7 1011.9 MAX. QFF PRESSURE IN HPA 1026.9 1023.9 1019.2 1021.5 1012.9 1007.6 1003.0 1004.8 1012.5 1018.9 1022.0 1026.5 1026.9 DAY 17 1 15 22 12 1 31 8 30 28 30 2 MIN. QFF PRESSURE IN HPA 1017.7 1012.2 1008.6 1006.9 1004.1 999.0 996.1 996.8 1001.9 1007.3 1013.2 1015.0 996.1 DAY 6 18 13 19 30 9 26 14 11 4 7 13 ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION OMIDIYEH (PAYGAH) (40830) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 30 46 N LONGITUDE 49 39 E DATA PROCESSING CENTER ELEVATION 34.9 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 1020.3 1016.2 1011.7 1011.3 1005.5 1000.1 996.9 998.0 1004.0 1011.5 1015.5 1019.0 1009.2 MAX. QFE PRESSURE IN HPA 1024.7 1020.5 1016.7 1018.1 1009.8 1004.8 1000.5 1001.9 1010.3 1017.3 1019.8 1023.2 1024.7 DAY 28 1 15 22 13 1 30 7 30 30 30 2 MIN. QFE PRESSURE IN HPA 1013.2 1008.4 1004.7 1004.0 1001.7 996.3 992.7 994.2 998.8 1005.3 1011.2 1014.2 992.7 DAY 6 17 13 19 23 8 27 14 10 4 7 23 MEAN QNH PRESSURE IN HPA 1024.2 1020.1 1015.6 1015.2 1009.4 1003.9 1000.8 1001.9 1007.8 1015.4 1019.4 1022.9 1013.0 MAX. QNH PRESSURE IN HPA 1028.6 1024.4 1020.6 1022.0 1013.7 1008.7 1004.4 1005.8 1014.2 1021.2 1023.7 1027.1 1028.6 DAY 28 1 15 22 13 1 30 7 30 30 30 2 MIN. QNH PRESSURE IN HPA 1017.1 1012.3 1008.6 1007.9 1005.6 1000.1 996.5 998.0 1002.7 1009.2 1015.1 1018.1 996.5 DAY 6 17 13 19 23 8 27 14 10 4 7 23 MEAN QFF PRESSURE IN HPA 1024.5 1020.4 1015.8 1015.3 1009.4 1003.9 1000.7 1001.9 1007.9 1015.5 1019.6 1023.3 1013.2 MAX. QFF PRESSURE IN HPA 1029.0 1024.7 1021.0 1022.2 1013.7 1008.7 1004.3 1005.7 1014.3 1021.4 1024.0 1027.5 1029.0 DAY 28 1 15 22 13 1 30 7 30 30 30 2 MIN. QFF PRESSURE IN HPA 1017.4 1012.5 1008.8 1007.9 1005.6 1000.2 996.5 997.9 1002.7 1009.2 1015.3 1018.3 996.5 DAY 6 17 13 19 23 8 27 14 10 4 7 23 PRESSURE AT HOUR 0900 UTC. MEAN QFE PRESSURE IN HPA 1019.7 1015.9 1011.4 1010.7 1005.1 999.5 996.6 997.4 1003.4 1010.6 1014.7 1017.8 1008.6 MAX. QFE PRESSURE IN HPA 1024.2 1020.4 1016.5 1016.7 1010.5 1003.6 1000.8 1001.4 1009.7 1015.1 1019.2 1022.5 1024.2 DAY 28 11 15 7 12 2 30 7 30 30 30 2 MIN. QFE PRESSURE IN HPA 1010.8 1008.9 1004.4 1004.4 1000.9 995.7 992.4 993.1 998.1 1004.2 1009.6 1010.1 992.4 DAY 6 9 13 19 23 8 27 13 10 4 25 13 MEAN QNH PRESSURE IN HPA 1023.6 1019.8 1015.3 1014.6 1008.9 1003.4 1000.5 1001.3 1007.2 1014.5 1018.6 1021.7 1012.5 MAX. QNH PRESSURE IN HPA 1028.1 1024.3 1020.4 1020.6 1014.4 1007.5 1004.7 1005.3 1013.6 1019.0 1023.1 1026.4 1028.1 DAY 28 11 15 7 12 2 30 7 30 30 30 2 MIN. QNH PRESSURE IN HPA 1014.7 1012.8 1008.3 1008.3 1004.8 999.5 996.2 996.9 1001.9 1008.1 1013.5 1014.0 996.2 DAY 6 9 13 19 23 8 27 13 10 4 25 13 MEAN QFF PRESSURE IN HPA 1023.9 1020.1 1015.6 1014.7 1008.9 1003.4 1000.4 1001.2 1007.3 1014.6 1018.8 1022.0 1012.6 MAX. QFF PRESSURE IN HPA 1028.5 1024.6 1020.7 1020.8 1014.4 1007.5 1004.6 1005.2 1013.6 1019.2 1023.4 1026.7 1028.5 DAY 28 11 15 7 12 2 30 7 30 30 30 2 MIN. QFF PRESSURE IN HPA 1015.0 1013.0 1008.5 1008.3 1004.8 999.5 996.2 996.8 1001.9 1008.1 1013.7 1014.2 996.2 DAY 6 9 13 19 23 8 27 13 10 4 25 13 PRESSURE AT HOUR 1200 UTC. MEAN QFE PRESSURE IN HPA 1018.0 1014.1 1010.0 1009.1 1003.5 998.1 995.0 995.6 1001.6 1008.9 1013.2 1016.5 1007.0 MAX. QFE PRESSURE IN HPA 1021.9 1019.3 1013.5 1015.6 1007.6 1001.8 998.9 1000.0 1008.1 1013.7 1017.4 1020.5 1021.9 DAY 28 11 31 7 12 1 30 7 30 28 30 1 MIN. QFE PRESSURE IN HPA 1008.4 1008.5 1003.1 1003.4 999.4 994.0 990.8 991.5 996.9 1002.5 1008.7 1009.6 990.8 DAY 6 18 13 26 23 8 27 13 10 4 25 13 MEAN QNH PRESSURE IN HPA 1021.9 1018.0 1013.9 1012.9 1007.4 1002.0 998.8 999.5 1005.5 1012.8 1017.1 1020.4 1010.8 MAX. QNH PRESSURE IN HPA 1025.8 1023.2 1017.4 1019.5 1011.5 1005.7 1002.8 1003.9 1012.0 1017.6 1021.3 1024.4 1025.8 DAY 28 11 31 7 12 1 30 7 30 28 30 1 MIN. QNH PRESSURE IN HPA 1012.3 1012.4 1007.0 1007.3 1003.3 997.8 994.6 995.3 1000.7 1006.4 1012.6 1013.5 994.6 DAY 6 18 13 26 23 8 27 13 10 4 25 13 MEAN QFF PRESSURE IN HPA 1022.2 1018.3 1014.1 1013.1 1007.4 1001.9 998.8 999.4 1005.5 1012.9 1017.3 1020.6 1011.0 MAX. QFF PRESSURE IN HPA 1026.2 1023.5 1017.6 1019.7 1011.5 1005.7 1002.7 1003.8 1012.0 1017.8 1021.6 1024.7 1026.2 DAY 28 11 31 7 12 1 30 7 30 28 30 2 MIN. QFF PRESSURE IN HPA 1012.6 1012.6 1007.2 1007.3 1003.3 997.8 994.6 995.2 1000.8 1006.4 1012.8 1013.7 994.6 DAY 6 18 13 26 23 8 27 13 10 4 25 13 ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION OMIDIYEH (PAYGAH) (40830) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 30 46 N LONGITUDE 49 39 E DATA PROCESSING CENTER ELEVATION 34.9 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 1018.2 1014.0 1010.0 1008.6 1002.8 997.5 994.4 995.0 1001.4 1009.0 1013.5 1016.8 1006.8 MAX. QFE PRESSURE IN HPA 1022.4 1019.2 1013.5 1014.8 1007.2 1001.5 998.5 1000.5 1008.1 1014.0 1018.1 1020.6 1022.4 DAY 17 11 31 7 12 1 30 7 30 27 30 1 MIN. QFE PRESSURE IN HPA 1011.1 1007.3 1003.0 1002.8 998.4 993.3 990.0 990.5 997.1 1002.7 1009.4 1010.1 990.0 DAY 6 28 13 25 29 8 26 13 11 4 2 23 MEAN QNH PRESSURE IN HPA 1022.1 1017.9 1013.9 1012.4 1006.7 1001.3 998.2 998.8 1005.3 1012.8 1017.4 1020.7 1010.6 MAX. QNH PRESSURE IN HPA 1026.3 1023.1 1017.4 1018.7 1011.1 1005.4 1002.3 1004.4 1012.0 1017.9 1022.0 1024.5 1026.3 DAY 17 11 31 7 12 1 30 7 30 27 30 1 MIN. QNH PRESSURE IN HPA 1015.0 1011.2 1006.9 1006.7 1002.2 997.1 993.8 994.3 1000.9 1006.6 1013.3 1014.0 993.8 DAY 6 28 13 25 29 8 26 13 11 4 2 23 MEAN QFF PRESSURE IN HPA 1022.4 1018.2 1014.1 1012.6 1006.7 1001.3 998.2 998.8 1005.4 1013.0 1017.6 1021.0 1010.8 MAX. QFF PRESSURE IN HPA 1026.7 1023.4 1017.7 1019.0 1011.1 1005.4 1002.3 1004.3 1012.1 1018.1 1022.3 1024.8 1026.7 DAY 17 11 31 7 12 1 30 7 30 27 30 1 MIN. QFF PRESSURE IN HPA 1015.3 1011.4 1007.1 1006.8 1002.3 997.1 993.8 994.3 1001.0 1006.7 1013.4 1014.2 993.8 DAY 6 28 13 25 29 8 26 13 11 4 2 23 PRESSURE AT HOUR 1800 UTC. MEAN QFE PRESSURE IN HPA 1019.0 1014.8 1010.9 1009.6 1004.0 998.5 995.6 996.5 1002.8 1009.7 1014.3 1017.4 1007.8 MAX. QFE PRESSURE IN HPA 1022.7 1019.8 1014.9 1015.9 1008.2 1002.0 1000.7 1000.5 1009.2 1014.9 1019.3 1021.7 1022.7 DAY 12 11 31 7 11 1 29 7 30 27 30 1 MIN. QFE PRESSURE IN HPA 1013.9 1008.3 1004.1 1004.5 999.6 994.3 991.7 991.6 998.3 1003.7 1010.3 1009.7 991.6 DAY 6 28 13 25 29 8 26 13 8 3 25 23 MEAN QNH PRESSURE IN HPA 1022.9 1018.7 1014.7 1013.5 1007.8 1002.4 999.5 1000.4 1006.7 1013.6 1018.2 1021.4 1011.6 MAX. QNH PRESSURE IN HPA 1026.6 1023.7 1018.8 1019.8 1012.1 1005.9 1004.6 1004.4 1013.1 1018.8 1023.2 1025.6 1026.6 DAY 12 11 31 7 11 1 29 7 30 27 30 1 MIN. QNH PRESSURE IN HPA 1017.8 1012.2 1008.0 1008.4 1003.5 998.1 995.5 995.4 1002.1 1007.6 1014.2 1013.6 995.4 DAY 6 28 13 25 29 8 26 13 8 3 25 23 MEAN QFF PRESSURE IN HPA 1023.2 1019.0 1015.0 1013.6 1007.8 1002.4 999.4 1000.4 1006.7 1013.7 1018.5 1021.7 1011.8 MAX. QFF PRESSURE IN HPA 1027.0 1024.1 1019.1 1020.0 1012.1 1005.9 1004.5 1004.3 1013.2 1019.0 1023.5 1025.9 1027.0 DAY 17 11 31 7 11 1 29 7 30 27 30 1 MIN. QFF PRESSURE IN HPA 1018.1 1012.4 1008.2 1008.4 1003.5 998.1 995.5 995.4 1002.2 1007.7 1014.4 1013.8 995.4 DAY 6 28 13 25 29 8 26 13 8 3 25 23 PRESSURE AT HOUR 2100 UTC. MEAN QFE PRESSURE IN HPA 1019.0 1014.8 1011.0 1010.0 1004.4 999.1 996.1 996.9 1003.1 1009.6 1014.3 1017.3 1008.0 MAX. QFE PRESSURE IN HPA 1022.8 1019.5 1015.3 1016.8 1008.8 1002.9 1002.2 1001.1 1009.5 1014.7 1019.8 1021.7 1022.8 DAY 28 6 1 21 12 1 29 7 30 27 30 1 MIN. QFE PRESSURE IN HPA 1014.1 1008.5 1002.8 1004.8 1000.0 995.3 992.3 992.6 998.1 1003.7 1010.1 1009.0 992.3 DAY 6 28 13 18 29 8 26 13 10 3 2 23 MEAN QNH PRESSURE IN HPA 1022.9 1018.7 1014.9 1013.9 1008.2 1003.0 999.9 1000.7 1007.0 1013.5 1018.2 1021.2 1011.8 MAX. QNH PRESSURE IN HPA 1026.7 1023.4 1019.2 1020.7 1012.7 1006.8 1006.1 1005.0 1013.4 1018.6 1023.7 1025.6 1026.7 DAY 28 6 1 21 12 1 29 7 30 27 30 1 MIN. QNH PRESSURE IN HPA 1018.0 1012.4 1006.7 1008.7 1003.9 999.1 996.1 996.4 1001.9 1007.6 1014.0 1012.9 996.1 DAY 6 28 13 18 29 8 26 13 10 3 2 23 MEAN QFF PRESSURE IN HPA 1023.2 1018.9 1015.1 1014.0 1008.2 1002.9 999.9 1000.7 1007.0 1013.6 1018.4 1021.5 1012.0 MAX. QFF PRESSURE IN HPA 1027.1 1023.7 1019.4 1020.9 1012.7 1006.7 1006.0 1004.9 1013.4 1018.8 1024.0 1025.9 1027.1 DAY 28 6 1 21 12 1 29 7 30 27 30 1 MIN. QFF PRESSURE IN HPA 1018.2 1012.5 1006.8 1008.7 1003.8 999.1 996.1 996.3 1001.9 1007.6 1014.1 1013.1 996.1 DAY 6 28 13 30 29 8 26 13 10 3 2 23 ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION OMIDIYEH (PAYGAH) (40830) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 30 46 N LONGITUDE 49 39 E DATA PROCESSING CENTER ELEVATION 34.9 M MEANS AND EXTREMES FOR THE YEAR 1988 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AIR TEMPERATURE (C) 11.2 14.6 18.1 24.8 31.4 34.9 36.9 36.3 32.8 27.5 18.3 13.9 25.1 MINIMUN AIR TEMPERATURE (C) 6.6 9.0 12.0 17.5 21.7 24.4 27.3 27.1 23.0 19.1 12.0 9.2 17.4 DAYS WITH MINIMUM TEMP. >=21 0 0 0 7 20 30 31 31 26 10 1 0 156 DAYS WITH MINIMUM TEMP. <=-4 0 0 0 0 0 0 0 0 0 0 0 0 0 DAYS WITH FREEZING MIN.<= 0 1 0 0 0 0 0 0 0 0 0 0 0 1 TEMPERATURE RECORDS LOWEST(C) 0.0 4.0 5.0 8.0 18.0 21.0 24.0 24.0 19.0 15.0 0.6 0.2 0.0 DAY 1 6 6 2 6 21 1 26 26 7 15 29 MAXIMUM AIR TEMPERATURE (C) 16.8 21.1 24.8 32.2 40.4 44.4 46.4 45.5 43.3 37.2 26.9 20.2 33.3 DAYS WITH MAXIMUM TEMP. >=30 0 0 3 21 31 30 31 31 30 30 10 0 217 DAYS WITH MAXIMUM TEMP. <= 0 0 0 0 0 0 0 0 0 0 0 0 0 0 TEMPERATURE RECORDS HIGHEST(C) 23.0 26.0 33.5 40.0 46.0 50.0 51.0 49.0 48.0 41.0 36.0 26.0 51.0 DAY 25 29 30 18 31 13 13 1 8 4 3 13 DIF. BETWEEN (MAX.-MIN.) (C) 10.2 12.1 12.8 14.7 18.7 20.0 19.1 18.4 20.3 18.1 14.9 11.0 15.9 MEAN DAILY TEMP. (MDT) (C) 11.7 15.1 18.4 24.9 31.0 34.4 36.9 36.3 33.1 28.1 19.4 14.7 25.3 COOLING DEG. DAYS(BASE 21 0C) 0.0 0.0 10.3 129.7 311.3 402.2 491.4 474.9 364.4 221.6 48.9 0.0 2454.6 HEATING DEG. DAYS(BASE 18 0C) 195.8 84.5 29.1 1.5 0.0 0.0 0.0 0.0 0.0 0.0 52.9 106.9 470.7 DEWPOINT (MEAN C) 7.6 8.0 9.3 11.0 11.0 10.1 11.9 12.3 7.4 9.8 6.5 6.3 9.3 MIXING RATIO (G/KG) 6.60 6.81 7.48 8.63 8.42 8.04 9.41 9.55 6.91 8.04 6.46 6.16 7.71 VAPOUR PRESSURE (HPA) 10.68 10.96 11.99 13.77 13.41 12.73 14.77 15.03 10.98 12.86 10.41 9.94 12.29 SATURATION DEF. (HPA) 3.03 6.25 9.75 19.56 35.49 46.97 51.17 48.75 42.16 26.01 12.60 6.69 25.70 RELATIVE HUMIDITY (MEAN %) 80 68 61 46 32 25 26 27 24 37 50 63 45 RELATIVE HUMIDITY (MAX. %) 93 88 82 70 50 42 44 44 41 60 70 78 64 RELATIVE HUMIDITY (MIN. %) 61 42 37 25 17 12 12 13 10 18 28 43 27 RELATIVE HUMIDITY (MEAN% 03UTC) 89 84 79 66 48 40 40 42 37 55 65 75 60 RELATIVE HUMIDITY (MEAN% 09UTC) 70 53 45 36 21 16 18 17 15 24 38 52 34 RELATIVE HUMIDITY (MEAN% 15UTC) 75 56 48 31 21 16 14 16 14 27 43 59 35 RH=0 => RELATIVE HUMIDITY < 0.5% AMOUNT OF PRECIPITATION MM. 71.3 49.9 35.4 18.4 0.0 0.0 0.0 0.0 0.0 0.0 50.7 27.5 253.2 DAYS WITH PRECIPITATION >=10 4 1 1 1 0 0 0 0 0 0 1 1 9 DAYS WITH PRECIPITATION >= 5 5 3 3 2 0 0 0 0 0 0 1 3 17 DAYS WITH PRECIPITATION >= 1 8 5 5 3 0 0 0 0 0 0 3 3 27 DAYS WITH PRECIPITATION 9 11 8 7 0 0 0 0 0 0 4 6 45 GREATEST DAILY PRECIPITATION 17.0 27.0 19.1 10.3 0.0 0.0 0.0 0.0 0.0 0.0 48.0 10.0 48.0 DAY 13 23 5 15 **