STATION MAHABAD (40726) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 36 46 N LONGITUDE 45 43 E DATA PROCESSING CENTER ELEVATION 1385.0 M MEANS AND EXTREMES FOR THE YEAR 1985 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AIR TEMPERATURE (C) -1.0 0.3 2.0 13.3 18.1 22.8 25.1 24.1 21.7 13.3 9.6 1.4 12.6 MINIMUN AIR TEMPERATURE (C) -4.6 -3.2 -3.0 6.4 10.0 13.8 16.5 15.8 12.8 5.9 3.9 -1.4 6.1 DAYS WITH MINIMUM TEMP. >=21 0 0 0 0 0 1 1 0 1 0 0 0 3 DAYS WITH MINIMUM TEMP. <=-4 14 9 15 0 0 0 0 0 0 0 0 6 44 DAYS WITH FREEZING MIN.<= 0 26 19 17 0 0 0 0 0 0 1 1 21 85 TEMPERATURE RECORDS LOWEST(C) -15.0 -15.2 -14.8 1.6 5.0 10.5 12.0 11.8 7.0 -0.4 -1.0 -8.0 -15.2 DAY 5 23 6 5 4 19 1 20 22 31 1 4 MAXIMUM AIR TEMPERATURE (C) 2.3 2.9 5.8 17.5 25.1 30.3 32.3 31.3 29.4 20.0 15.2 5.5 18.1 DAYS WITH MAXIMUM TEMP. >=30 0 0 0 0 1 14 23 21 16 0 0 0 75 DAYS WITH MAXIMUM TEMP. <= 0 11 8 11 0 0 0 0 0 0 0 0 1 31 TEMPERATURE RECORDS HIGHEST(C) 12.0 12.0 16.0 26.0 32.0 36.0 38.0 36.4 35.0 26.0 22.0 10.6 38.0 DAY 15 14 31 19 30 26 13 6 1 1 9 7 DIF. BETWEEN (MAX.-MIN.) (C) 6.9 6.1 8.8 11.1 15.1 16.5 15.8 15.5 16.6 14.1 11.3 6.9 12.0 MEAN DAILY TEMP. (MDT) (C) -1.1 -0.2 1.4 12.0 17.5 22.0 24.4 23.6 21.1 13.0 9.6 2.0 12.1 COOLING DEG. DAYS(BASE 21 0C) 0.0 0.0 0.0 0.0 2.8 44.9 106.1 82.0 35.1 0.0 0.0 0.0 271.0 HEATING DEG. DAYS(BASE 18 0C) 593.4 508.9 515.2 180.6 34.2 0.1 0.0 0.0 6.7 157.0 252.2 495.7 2743.9 DEWPOINT (MEAN C) -4.1 -6.5 -7.0 2.3 5.8 4.1 7.6 6.2 1.4 0.9 3.2 -2.2 1.0 MIXING RATIO (G/KG) 3.44 3.01 3.00 5.37 6.90 6.26 8.05 7.23 5.15 4.88 5.67 3.86 5.23 VAPOUR PRESSURE (HPA) 4.75 4.12 4.14 7.37 9.46 8.56 10.97 9.91 7.09 6.74 7.85 5.34 7.19 SATURATION DEF. (HPA) 1.34 2.44 3.93 8.60 12.33 20.74 22.25 21.51 20.47 9.33 4.57 1.57 10.76 RELATIVE HUMIDITY (MEAN %) 81 63 54 50 49 34 36 35 30 47 67 78 52 RELATIVE HUMIDITY (MAX. %) 89 73 70 70 73 54 55 54 48 72 84 90 69 RELATIVE HUMIDITY (MIN. %) 72 53 42 37 27 17 22 21 17 30 48 61 37 RELATIVE HUMIDITY (MEAN% 03UTC) 85 66 65 68 72 52 51 52 47 65 82 86 66 RELATIVE HUMIDITY (MEAN% 09UTC) 78 63 48 44 34 23 32 26 23 36 53 70 44 RELATIVE HUMIDITY (MEAN% 15UTC) 83 59 49 43 33 20 23 23 20 39 64 77 44 RH=0 => RELATIVE HUMIDITY < 0.5% AMOUNT OF PRECIPITATION MM. 63.0 137.0 57.0 20.0 2.0 1.0 0.0 0.5 0.0 17.0 51.0 50.2 398.7 DAYS WITH PRECIPITATION >=10 2 5 1 0 0 0 0 0 0 1 2 1 12 DAYS WITH PRECIPITATION >= 5 3 9 1 2 0 0 0 0 0 1 4 3 23 DAYS WITH PRECIPITATION >= 1 7 13 8 6 1 1 0 0 0 3 4 10 53 DAYS WITH PRECIPITATION 7 14 8 6 2 1 0 1 0 3 5 11 58 GREATEST DAILY PRECIPITATION 38.0 36.0 36.0 6.0 2.0 1.0 0.0 0.5 0.0 12.0 24.0 26.0 38.0 DAY 2 5 24 23 16 16 ** 2 ** 12 12 1 DAY WITH THUNDER STORM 0 0 0 0 0 0 0 0 0 0 1 0 1 DAYS WITH SNOW OR SLEET 5 8 1 0 0 0 0 0 0 0 0 5 19 DAYS WITH DUST 0 0 0 0 0 0 0 0 0 2 0 0 2 WIND DIRECTION (PREVAILING) 225 180 180 180 225 225 45 45 225 180 180 225 225 PREVAILING WIND SPEED(KNOTS) 12.5 13.7 9.7 11.0 10.4 10.6 8.7 7.9 10.7 9.9 8.7 8.9 10.9 PREVAILING WIND PERCENT 11.0 37.1 12.9 17.3 15.3 15.3 19.0 24.2 17.5 14.0 5.1 11.6 11.4 CALMS PERCENT OF WIND 75.5 40.0 72.9 62.7 69.8 52.1 56.5 53.3 58.0 58.5 83.2 78.9 63.5 NO. OF WIND OBSERVATION 155 140 155 150 235 236 232 240 212 207 197 242 2401 VECTOR WIND DIRECTION (MEAN) 198 193 195 199 219 225 25 21 213 202 206 203 202 VECTOR WIND MAGNITUDE(KNOTS) 2.4 7.4 1.0 3.3 1.9 1.3 1.1 2.3 1.8 2.3 0.4 1.6 1.6 WIND STEADINESES (MEAN %) 85.7 94.9 41.7 78.6 73.1 31.7 28.2 63.9 51.4 60.5 33.3 88.9 45.7 WIND SPEED (MEAN KNOTS) 2.8 7.8 2.4 4.2 2.6 4.1 3.9 3.6 3.5 3.8 1.2 1.8 3.5 FASTEST WIND DIRECTION 200 180 180 210 210 200 210 210 220 200 190 210 180 FASTEST WIND SPEED (KNOTS) 19 31 17 31 29 23 19 19 19 31 19 19 31 DAY 10 19 21 14 17 6 27 21 12 19 26 19 DAYS WITH SKY CLEAR (0-2)/8 2 10 11 14 21 30 31 31 30 23 16 9 228 DAYS WITH P.CLOUDY (3-6)/8 15 10 13 10 9 0 0 0 0 8 10 11 86 DAYS WITH CLOUDY (7-8)/8 14 8 7 6 1 0 0 0 0 0 4 11 51 DAYS WITH VISIBILITY =< 2 KM 6 6 1 0 0 0 1 1 0 1 0 0 16 DURATION OF SUNSHINE HOURS 79.2 127.6 138.5 219.5 305.5 357.0 335.2 334.3 280.3 233.2 179.2 117.3 2706.8 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION MAHABAD (40726) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 36 46 N LONGITUDE 45 43 E DATA PROCESSING CENTER ELEVATION 1385.0 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 865.3 858.6 866.1 862.3 863.5 860.4 859.3 862.6 863.5 866.7 868.3 866.2 863.6 MAX. QFE PRESSURE IN HPA 872.9 868.4 878.5 871.6 871.2 866.6 864.6 867.9 872.4 873.4 873.0 877.4 878.5 DAY-HOUR 24- 9 12- 6 5- 9 17- 6 12- 6 10- 6 28-12 12- 6 22- 6 6- 6 14- 6 9- 6 MIN. QFE PRESSURE IN HPA 853.3 846.0 850.2 857.0 856.0 854.0 853.0 856.1 857.3 859.2 861.6 847.8 846.0 DAY-HOUR 2- 9 5-15 24- 3 14-15 3- 3 20-15 19- 9 7-15 6-15 10-12 26- 9 19- 0 MEAN QNH PRESSURE IN HPA 1021.9 1014.2 1022.7 1018.4 1019.8 1016.2 1015.0 1018.8 1019.8 1023.4 1025.2 1022.8 1019.8 MAX. QNH PRESSURE IN HPA 1030.5 1025.4 1036.9 1029.0 1028.6 1023.3 1021.0 1024.8 1030.0 1031.1 1030.6 1035.7 1036.9 DAY-HOUR 24- 9 12- 6 5- 9 17- 6 12- 6 10- 6 28-12 12- 6 22- 6 6- 6 14- 6 9- 6 MIN. QNH PRESSURE IN HPA 1008.1 999.7 1004.5 1012.3 1011.2 1008.9 1007.7 1011.3 1012.7 1014.9 1017.6 1001.8 999.7 DAY-HOUR 2- 9 5-15 24- 3 14-15 3- 3 20-15 19- 9 7-15 6-15 10-12 26- 9 19- 0 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** 1012.8 1006.4 1004.0 1008.3 1011.2 1019.6 1024.0 1025.9 ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** 1022.4 1016.3 1011.4 1016.1 1025.2 1030.2 1030.6 1039.2 ****** DAY-HOUR **-** **-** **-** **-** 12- 9 10- 3 29- 6 12- 6 22- 3 31- 6 1- 3 9- 6 MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** 1004.2 998.1 994.9 1000.5 1002.5 1007.6 1012.7 1002.6 ****** DAY-HOUR **-** **-** **-** **-** 30-21 20-15 19-15 7-12 6-21 19-21 10-12 18-21 PRESSURE AT HOUR 0000 UTC. MEAN QFE PRESSURE IN HPA ****** ****** ****** ****** 863.9 860.5 859.2 862.8 863.8 866.2 869.1 866.4 ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** ****** 869.2 866.3 863.1 866.8 871.7 871.4 872.5 875.8 ****** DAY ** ** ** ** 12 10 29 14 22 6 14 9 MIN. QFE PRESSURE IN HPA ****** ****** ****** ****** 860.0 856.3 854.9 858.3 859.3 860.9 864.0 847.8 ****** DAY ** ** ** ** 31 20 19 8 6 20 10 19 MEAN QNH PRESSURE IN HPA ****** ****** ****** ****** 1020.3 1016.4 1014.9 1019.0 1020.1 1022.9 1026.1 1023.1 ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** ****** 1026.3 1023.0 1019.3 1023.5 1029.2 1028.8 1030.1 1033.8 ****** DAY ** ** ** ** 12 10 29 14 22 6 14 9 MIN. QNH PRESSURE IN HPA ****** ****** ****** ****** 1015.8 1011.5 1009.9 1013.8 1015.0 1016.8 1020.3 1001.8 ****** DAY ** ** ** ** 31 20 19 8 6 20 10 19 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** 1013.0 1006.7 1003.8 1008.3 1011.1 1018.5 1023.9 1025.7 ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** 1019.4 1016.0 1009.5 1013.8 1023.7 1027.2 1028.3 1035.3 ****** DAY ** ** ** ** 12 10 29 14 22 23 19 9 MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** 1004.9 1000.6 996.6 1002.4 1003.9 1008.5 1013.9 1003.2 ****** DAY ** ** ** ** 31 20 20 8 7 20 10 19 PRESSURE AT HOUR 0300 UTC. MEAN QFE PRESSURE IN HPA 864.8 858.3 865.4 862.5 863.5 861.1 860.0 863.4 864.1 867.1 868.3 865.8 863.7 MAX. QFE PRESSURE IN HPA 870.9 867.1 876.5 871.4 870.0 866.3 863.9 867.3 872.3 872.9 872.5 875.8 876.5 DAY 14 12 5 17 12 10 29 14 22 6 14 9 MIN. QFE PRESSURE IN HPA 854.3 849.4 850.2 858.3 856.0 856.3 854.8 858.6 859.3 860.6 861.7 848.0 848.0 DAY 2 5 24 3 3 20 19 8 7 10 26 19 MEAN QNH PRESSURE IN HPA 1021.3 1013.8 1021.9 1018.6 1019.8 1017.0 1015.8 1019.7 1020.4 1023.9 1025.3 1022.4 1020.0 MAX. QNH PRESSURE IN HPA 1028.2 1023.9 1034.6 1028.8 1027.2 1023.0 1020.2 1024.1 1029.8 1030.5 1030.1 1033.8 1034.6 DAY 14 12 5 17 12 10 29 14 22 6 14 9 MIN. QNH PRESSURE IN HPA 1009.2 1003.6 1004.5 1013.8 1011.2 1011.5 1009.8 1014.2 1015.0 1016.5 1017.7 1002.0 1002.0 DAY 2 5 24 3 3 20 19 8 7 10 26 19 MEAN QFF PRESSURE IN HPA 1026.6 1017.6 1025.6 1015.3 1013.5 1007.8 1005.0 1009.9 1012.2 1020.5 1024.1 1025.5 1017.0 MAX. QFF PRESSURE IN HPA 1037.7 1032.5 1046.3 1027.2 1021.2 1016.3 1011.4 1015.6 1025.2 1029.1 1030.6 1037.5 1046.3 DAY 6 23 5 17 12 10 29 13 22 31 1 9 MIN. QFF PRESSURE IN HPA 1015.2 1005.4 1003.2 1009.4 1004.7 1000.6 996.8 1003.7 1004.6 1010.9 1015.2 1003.6 996.8 DAY 2 5 24 15 3 20 19 7 2 10 10 19 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION MAHABAD (40726) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 36 46 N LONGITUDE 45 43 E DATA PROCESSING CENTER ELEVATION 1385.0 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 865.8 858.9 866.7 863.3 864.3 861.5 860.7 864.0 864.7 867.9 869.2 866.5 864.5 MAX. QFE PRESSURE IN HPA 871.8 868.4 878.3 871.6 871.2 866.6 864.3 867.9 872.4 873.4 873.0 877.4 878.3 DAY 24 12 5 17 12 10 29 12 22 6 14 9 MIN. QFE PRESSURE IN HPA 854.0 849.7 853.1 859.1 857.0 856.3 854.0 858.8 860.0 860.4 863.0 849.7 849.7 DAY 2 26 24 2 3 20 19 8 6 10 26 19 MEAN QNH PRESSURE IN HPA 1022.4 1014.6 1023.5 1019.5 1020.6 1017.5 1016.6 1020.3 1021.2 1024.8 1026.2 1023.2 1020.9 MAX. QNH PRESSURE IN HPA 1029.3 1025.4 1036.7 1029.0 1028.6 1023.3 1020.7 1024.8 1030.0 1031.1 1030.6 1035.7 1036.7 DAY 24 12 5 17 12 10 29 12 22 6 14 9 MIN. QNH PRESSURE IN HPA 1008.9 1004.0 1007.9 1014.7 1012.3 1011.5 1008.9 1014.4 1015.8 1016.2 1019.2 1004.0 1004.0 DAY 2 26 24 2 3 20 19 8 6 10 26 19 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** 1013.9 1007.5 1005.5 1009.9 1012.7 1021.2 1026.3 1026.8 ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** 1022.4 1015.5 1011.4 1016.1 1024.7 1030.2 1030.5 1039.2 ****** DAY ** ** ** ** 12 10 29 12 22 31 19 9 MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** 1008.0 1000.3 995.9 1002.8 1005.5 1012.4 1016.8 1005.1 ****** DAY ** ** ** ** 31 20 19 7 7 20 10 19 PRESSURE AT HOUR 0900 UTC. MEAN QFE PRESSURE IN HPA 866.0 859.2 867.1 862.9 863.8 860.7 859.9 863.1 863.8 866.9 868.3 866.1 864.0 MAX. QFE PRESSURE IN HPA 872.9 868.4 878.5 870.3 870.8 865.3 863.3 867.1 871.3 872.7 872.4 875.6 878.5 DAY 24 12 5 17 12 10 16 18 22 6 14 9 MIN. QFE PRESSURE IN HPA 853.3 849.0 854.8 859.3 857.1 855.8 853.0 858.1 858.4 859.3 861.6 850.0 849.0 DAY 2 5 24 2 3 20 19 8 6 10 26 19 MEAN QNH PRESSURE IN HPA 1022.7 1014.8 1023.9 1019.1 1020.1 1016.6 1015.7 1019.4 1020.1 1023.7 1025.3 1022.8 1020.3 MAX. QNH PRESSURE IN HPA 1030.5 1025.4 1036.9 1027.6 1028.1 1021.8 1019.5 1023.9 1028.7 1030.3 1030.0 1033.6 1036.9 DAY 24 12 5 17 12 10 16 18 22 6 14 9 MIN. QNH PRESSURE IN HPA 1008.1 1003.2 1009.8 1015.0 1012.4 1011.0 1007.7 1013.6 1013.9 1015.0 1017.6 1004.3 1003.2 DAY 2 5 24 2 3 20 19 8 6 10 26 19 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** 1013.2 1006.5 1004.5 1008.5 1011.0 1019.4 1024.3 1026.1 ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** 1022.4 1014.0 1010.3 1013.8 1022.5 1029.3 1028.7 1036.5 ****** DAY ** ** ** ** 12 10 29 13 22 31 19 10 MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** 1007.3 999.7 996.2 1001.6 1003.3 1011.0 1016.1 1004.8 ****** DAY ** ** ** ** 26 20 19 8 7 18 10 19 PRESSURE AT HOUR 1200 UTC. MEAN QFE PRESSURE IN HPA 865.0 858.4 865.8 861.6 862.6 859.6 858.7 861.7 862.4 865.7 867.0 865.4 862.8 MAX. QFE PRESSURE IN HPA 871.8 867.5 876.7 868.9 869.2 864.3 864.6 866.5 869.3 871.2 871.3 875.3 876.7 DAY 24 23 5 17 12 9 28 18 22 6 14 9 MIN. QFE PRESSURE IN HPA 855.3 847.0 855.3 858.0 857.4 854.5 853.5 856.5 857.6 859.2 861.9 852.0 847.0 DAY 2 5 24 14 3 20 19 7 6 10 26 19 MEAN QNH PRESSURE IN HPA 1021.5 1013.9 1022.4 1017.6 1018.7 1015.3 1014.3 1017.8 1018.5 1022.3 1023.8 1022.0 1019.0 MAX. QNH PRESSURE IN HPA 1029.3 1024.3 1034.9 1025.9 1026.3 1020.7 1021.0 1023.2 1026.4 1028.6 1028.7 1033.3 1034.9 DAY 24 23 5 17 12 9 28 18 22 6 14 9 MIN. QNH PRESSURE IN HPA 1010.4 1000.9 1010.4 1013.5 1012.8 1009.5 1008.3 1011.8 1013.0 1014.9 1017.9 1006.6 1000.9 DAY 2 5 24 14 3 20 19 7 6 10 26 19 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** 1012.0 1005.6 1003.3 1007.0 1009.8 1017.6 1022.9 1025.0 ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** 1020.2 1013.1 1010.6 1013.1 1019.6 1024.2 1026.8 1035.0 ****** DAY ** ** ** ** 12 9 28 18 22 22 18 9 MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** 1005.9 998.7 995.3 1000.5 1003.3 1011.0 1012.7 1007.4 ****** DAY ** ** ** ** 26 20 19 7 6 19 10 18 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION MAHABAD (40726) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 36 46 N LONGITUDE 45 43 E DATA PROCESSING CENTER ELEVATION 1385.0 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 865.2 858.4 865.4 861.4 862.3 859.1 858.1 861.0 862.4 865.9 867.3 866.0 862.7 MAX. QFE PRESSURE IN HPA 871.4 868.2 876.1 869.0 868.4 864.0 862.8 866.0 868.9 871.4 871.0 875.1 876.1 DAY 24 23 5 16 12 9 28 18 22 6 14 9 MIN. QFE PRESSURE IN HPA 855.8 846.0 852.6 857.0 856.5 854.0 853.1 856.1 857.3 860.3 862.8 850.4 846.0 DAY 2 5 23 14 1 20 19 7 6 10 26 18 MEAN QNH PRESSURE IN HPA 1021.7 1014.0 1022.0 1017.3 1018.4 1014.7 1013.6 1017.0 1018.6 1022.5 1024.1 1022.7 1018.9 MAX. QNH PRESSURE IN HPA 1028.8 1025.2 1034.2 1026.1 1025.4 1020.3 1019.0 1022.6 1025.9 1028.8 1028.4 1033.0 1034.2 DAY 24 23 5 16 12 9 28 18 22 6 14 9 MIN. QNH PRESSURE IN HPA 1011.0 999.7 1007.3 1012.3 1011.8 1008.9 1007.9 1011.3 1012.7 1016.1 1019.0 1004.8 999.7 DAY 2 5 23 14 1 20 19 7 6 10 26 18 MEAN QFF PRESSURE IN HPA 1026.9 1017.9 1025.4 1014.0 1012.0 1005.4 1002.9 1007.0 1010.5 1019.2 1023.0 1025.8 1015.8 MAX. QFF PRESSURE IN HPA 1038.8 1036.8 1044.4 1023.8 1019.9 1013.2 1009.4 1013.8 1020.2 1029.4 1028.6 1036.8 1044.4 DAY 6 23 5 16 12 9 28 18 22 31 18 9 MIN. QFF PRESSURE IN HPA 1014.9 1001.3 1005.9 1007.5 1005.2 998.1 994.9 1000.9 1003.9 1011.5 1016.2 1005.7 994.9 DAY 15 5 23 14 1 20 19 8 6 10 10 18 PRESSURE AT HOUR 1800 UTC. MEAN QFE PRESSURE IN HPA ****** ****** ****** ****** 863.8 860.0 858.7 862.2 863.5 866.6 868.9 866.7 ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** ****** 869.1 865.1 862.5 866.5 869.8 872.4 872.0 875.8 ****** DAY ** ** ** ** 12 9 28 13 22 31 18 8 MIN. QFE PRESSURE IN HPA ****** ****** ****** ****** 859.8 855.1 853.5 857.3 858.4 859.7 864.8 848.6 ****** DAY ** ** ** ** 20 20 19 7 6 19 9 18 MEAN QNH PRESSURE IN HPA ****** ****** ****** ****** 1020.1 1015.8 1014.3 1018.3 1019.8 1023.4 1026.0 1023.4 ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** ****** 1026.2 1021.6 1018.6 1023.2 1027.0 1030.0 1029.5 1033.8 ****** DAY ** ** ** ** 12 9 28 13 22 31 18 8 MIN. QNH PRESSURE IN HPA ****** ****** ****** ****** 1015.5 1010.2 1008.3 1012.7 1013.9 1015.4 1021.3 1002.7 ****** DAY ** ** ** ** 20 20 19 7 6 19 9 18 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** 1012.6 1005.8 1003.1 1007.9 1011.2 1020.0 1024.8 1026.6 ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** 1020.0 1013.2 1009.1 1014.2 1020.9 1030.1 1029.6 1036.9 ****** DAY ** ** ** ** 12 9 28 12 21 31 18 9 MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** 1005.6 998.9 995.3 1000.8 1003.4 1008.0 1017.4 1003.4 ****** DAY ** ** ** ** 30 20 19 7 6 19 9 18 PRESSURE AT HOUR 2100 UTC. MEAN QFE PRESSURE IN HPA ****** ****** ****** ****** 864.1 860.5 859.3 862.7 863.7 867.0 869.0 866.7 ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** ****** 869.1 866.3 863.5 866.8 870.2 872.3 872.4 876.1 ****** DAY ** ** ** ** 12 9 28 13 22 31 13 8 MIN. QFE PRESSURE IN HPA ****** ****** ****** ****** 859.9 856.3 854.6 858.3 858.6 861.3 864.6 848.1 ****** DAY ** ** ** ** 30 20 19 7 6 19 9 18 MEAN QNH PRESSURE IN HPA ****** ****** ****** ****** 1020.5 1016.3 1015.0 1018.9 1020.0 1023.8 1026.0 1023.5 ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** ****** 1026.2 1023.0 1019.8 1023.5 1027.4 1029.8 1030.0 1034.2 ****** DAY ** ** ** ** 12 9 28 13 22 31 13 8 MIN. QNH PRESSURE IN HPA ****** ****** ****** ****** 1015.6 1011.5 1009.6 1013.8 1014.2 1017.3 1021.0 1002.1 ****** DAY ** ** ** ** 30 20 19 7 6 19 9 18 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** 1012.8 1006.1 1003.7 1008.1 1010.8 1019.6 1023.7 1026.2 ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** 1019.7 1014.9 1010.5 1013.6 1021.5 1029.7 1029.0 1036.1 ****** DAY ** ** ** ** 12 9 28 13 21 31 18 8 MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** 1004.2 1000.1 997.5 1001.7 1002.5 1007.6 1015.8 1002.6 ****** DAY ** ** ** ** 30 19 18 7 6 19 9 18 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION MAHABAD (40726) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 36 46 N LONGITUDE 45 43 E DATA PROCESSING CENTER ELEVATION 1385.0 M MEANS AND EXTREMES FOR THE YEAR 1986 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AIR TEMPERATURE (C) 1.7 3.2 4.9 12.0 15.3 20.4 26.5 25.0 22.1 15.7 5.3 -0.1 12.7 MINIMUN AIR TEMPERATURE (C) -3.0 -0.5 0.6 7.0 8.4 12.0 17.0 15.7 12.4 9.3 1.8 -3.8 6.4 DAYS WITH MINIMUM TEMP. >=21 0 0 0 0 0 0 2 1 0 0 0 0 3 DAYS WITH MINIMUM TEMP. <=-4 12 2 2 0 0 0 0 0 0 0 0 16 32 DAYS WITH FREEZING MIN.<= 0 20 18 14 0 0 0 0 0 0 0 13 23 88 TEMPERATURE RECORDS LOWEST(C) -15.6 -6.0 -5.0 2.2 4.6 8.8 11.2 12.0 8.0 4.0 -3.0 -11.6 -15.6 DAY 24 2 17 1 16 23 1 26 30 28 15 5 MAXIMUM AIR TEMPERATURE (C) 5.4 7.8 9.8 16.9 21.3 27.4 34.4 33.2 31.0 21.5 9.7 4.3 18.6 DAYS WITH MAXIMUM TEMP. >=30 0 0 0 0 0 6 30 28 25 0 0 0 89 DAYS WITH MAXIMUM TEMP. <= 0 9 1 0 0 0 0 0 0 0 0 0 3 13 TEMPERATURE RECORDS HIGHEST(C) 12.6 14.6 18.2 22.6 26.6 33.0 41.0 39.0 33.8 28.0 20.0 11.2 41.0 DAY 3 28 30 24 28 28 9 1 3 3 1 26 DIF. BETWEEN (MAX.-MIN.) (C) 8.4 8.3 9.2 9.9 12.9 15.4 17.4 17.5 18.6 12.2 7.9 8.1 12.2 MEAN DAILY TEMP. (MDT) (C) 1.2 3.7 5.2 11.9 14.8 19.7 25.7 24.4 21.7 15.4 5.8 0.3 12.5 COOLING DEG. DAYS(BASE 21 0C) 0.0 0.0 0.0 0.0 0.0 14.3 146.7 107.1 28.8 0.0 0.0 0.0 296.9 HEATING DEG. DAYS(BASE 18 0C) 520.0 400.8 397.3 177.5 101.1 4.6 0.0 0.0 1.3 84.6 366.9 549.8 2603.9 DEWPOINT (MEAN C) -4.7 -2.8 -2.3 4.7 4.9 7.0 9.0 6.5 1.8 6.0 0.7 -4.4 2.2 MIXING RATIO (G/KG) 3.22 3.65 3.92 6.34 6.42 7.47 8.61 7.20 5.26 6.89 4.76 3.28 5.59 VAPOUR PRESSURE (HPA) 4.46 5.03 5.41 8.72 8.82 10.27 11.91 10.00 7.30 9.52 6.58 4.54 7.71 SATURATION DEF. (HPA) 2.84 2.94 3.63 5.73 9.31 14.94 24.52 23.45 20.90 8.97 2.73 1.78 10.15 RELATIVE HUMIDITY (MEAN %) 64 67 63 65 53 47 37 34 30 56 74 74 55 RELATIVE HUMIDITY (MAX. %) 80 82 80 83 78 69 59 55 52 80 90 88 75 RELATIVE HUMIDITY (MIN. %) 51 48 44 44 34 28 20 19 15 35 54 56 37 RELATIVE HUMIDITY (MEAN% 03UTC) 73 78 78 80 72 66 56 53 47 76 85 79 70 RELATIVE HUMIDITY (MEAN% 09UTC) 58 57 56 52 40 33 28 25 19 44 60 67 45 RELATIVE HUMIDITY (MEAN% 15UTC) 64 62 50 53 42 34 24 22 21 52 72 71 47 RH=0 => RELATIVE HUMIDITY < 0.5% AMOUNT OF PRECIPITATION MM. 10.3 33.5 58.7 53.4 68.0 3.0 0.1 0.0 0.0 38.7 82.4 25.2 373.3 DAYS WITH PRECIPITATION >=10 0 0 2 2 2 0 0 0 0 2 4 1 13 DAYS WITH PRECIPITATION >= 5 0 3 6 4 5 0 0 0 0 2 6 1 27 DAYS WITH PRECIPITATION >= 1 6 6 8 9 7 1 0 0 0 4 10 5 56 DAYS WITH PRECIPITATION 8 10 9 10 7 2 1 0 0 7 12 7 73 GREATEST DAILY PRECIPITATION 2.0 9.0 16.0 13.0 23.0 3.0 0.1 0.0 0.0 19.0 20.0 16.0 23.0 DAY 22 10 31 16 3 17 25 ** ** 10 10 27 DAY WITH THUNDER STORM 0 0 0 0 0 0 1 0 0 4 0 0 5 DAYS WITH SNOW OR SLEET 4 8 4 0 0 0 0 0 0 0 5 6 27 DAYS WITH DUST 0 0 0 0 0 0 0 0 0 0 0 0 0 WIND DIRECTION (PREVAILING) 180 225 360 225 360 45 45 45 225 225 225 360 225 PREVAILING WIND SPEED(KNOTS) 9.7 8.5 8.1 11.2 10.2 7.3 5.2 5.0 8.2 9.5 9.0 10.3 9.6 PREVAILING WIND PERCENT 22.4 14.6 9.2 6.8 9.9 5.4 10.1 14.6 7.1 14.1 11.7 14.1 8.0 CALMS PERCENT OF WIND 53.4 73.5 71.4 76.8 67.2 81.5 74.8 73.3 74.9 64.1 72.8 65.3 70.7 NO. OF WIND OBSERVATION 219 219 206 190 232 205 238 240 239 198 239 248 2673 VECTOR WIND DIRECTION (MEAN) 199 209 333 221 40 229 34 24 229 204 203 19 208 VECTOR WIND MAGNITUDE(KNOTS) 4.6 2.0 0.5 0.5 0.8 0.3 0.5 0.7 0.6 1.8 1.8 2.0 0.6 WIND STEADINESES (MEAN %) 92.0 87.0 21.7 26.3 25.8 21.4 33.3 43.8 30.0 64.3 81.8 64.5 25.0 WIND SPEED (MEAN KNOTS) 5.0 2.3 2.3 1.9 3.1 1.4 1.5 1.6 2.0 2.8 2.2 3.1 2.4 FASTEST WIND DIRECTION 210 250 250 210 10 270 40 360 190 180 230 20 210 FASTEST WIND SPEED (KNOTS) 29 23 29 29 23 12 12 16 23 23 16 29 29 DAY 14 6 1 3 5 7 1 5 28 23 2 21 DAYS WITH SKY CLEAR (0-2)/8 14 10 7 6 19 26 27 30 29 12 7 14 201 DAYS WITH P.CLOUDY (3-6)/8 10 10 14 13 11 4 4 1 1 17 12 12 109 DAYS WITH CLOUDY (7-8)/8 7 8 10 11 1 0 0 0 0 2 11 5 55 DAYS WITH VISIBILITY =< 2 KM 2 0 1 0 0 0 0 0 0 0 0 0 3 DURATION OF SUNSHINE HOURS 155.2 ****** ****** ****** ****** ****** ****** 340.7 274.1 221.3 100.5 144.7 ****** ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION MAHABAD (40726) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 36 46 N LONGITUDE 45 43 E DATA PROCESSING CENTER ELEVATION 1385.0 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 865.6 863.3 864.2 864.1 863.4 865.5 872.6 874.8 871.0 868.8 866.8 867.6 867.3 MAX. QFE PRESSURE IN HPA 874.4 871.6 872.2 870.7 872.1 874.0 878.0 883.0 886.0 875.2 874.8 878.6 886.0 DAY-HOUR 24- 6 22- 6 27- 9 5- 6 19- 6 3- 6 12- 6 30- 6 3-15 16- 6 15- 6 7- 6 MIN. QFE PRESSURE IN HPA 851.0 850.3 857.7 858.3 853.6 860.0 865.9 867.0 861.5 859.8 855.3 853.0 850.3 DAY-HOUR 19-12 6- 3 24-15 10-15 3-12 21-12 24-15 6-15 14-15 1-12 8-15 27-12 MEAN QNH PRESSURE IN HPA 1022.1 1019.5 1020.5 1020.5 1019.6 1022.0 1030.2 1032.7 1028.3 1025.8 1023.5 1024.4 1024.1 MAX. QNH PRESSURE IN HPA 1032.2 1029.0 1029.7 1028.0 1029.6 1031.8 1036.4 1042.1 1045.5 1033.2 1032.7 1037.0 1045.5 DAY-HOUR 24- 6 22- 6 27- 9 5- 6 19- 6 3- 6 12- 6 30- 6 3-15 16- 6 15- 6 7- 6 MIN. QNH PRESSURE IN HPA 1005.5 1004.7 1013.1 1013.8 1008.4 1015.8 1022.5 1023.8 1017.5 1015.5 1010.4 1007.7 1004.7 DAY-HOUR 19-12 6- 3 24-15 10-15 3-12 21-12 24-15 6-15 14-15 1-12 8-15 27-12 MEAN QFF PRESSURE IN HPA 1023.6 1021.2 1021.6 1017.4 1014.4 1014.4 1018.6 1022.2 1019.2 1019.6 1023.9 1028.3 1020.4 MAX. QFF PRESSURE IN HPA 1042.7 1031.2 1033.6 1026.1 1024.8 1023.8 1024.6 1032.8 1038.1 1029.2 1035.2 1043.6 1043.6 DAY-HOUR 24- 3 22- 6 2-21 5- 3 19- 6 3- 6 12- 6 31- 6 3-15 16- 3 15- 6 7- 6 MIN. QFF PRESSURE IN HPA 1007.1 1005.9 1011.5 1010.8 1004.4 1006.9 1011.4 1012.4 1008.5 1008.3 1009.3 1008.1 1004.4 DAY-HOUR 19-12 6- 0 31- 3 10-15 2-15 27-15 24-12 14-21 14-21 1-12 8-15 27-12 PRESSURE AT HOUR 0000 UTC. MEAN QFE PRESSURE IN HPA 864.7 863.3 864.1 ****** 864.2 866.3 872.9 875.0 871.5 867.4 866.8 867.5 ****** MAX. QFE PRESSURE IN HPA 872.3 870.2 870.5 ****** 870.0 873.1 877.0 882.7 885.0 873.4 874.0 878.2 ****** DAY 5 22 3 ** 19 3 13 30 8 15 16 7 MIN. QFE PRESSURE IN HPA 855.4 851.7 860.6 ****** 858.0 862.0 866.9 868.3 862.7 861.0 857.3 858.5 ****** DAY 20 6 10 ** 10 19 24 15 15 2 9 27 MEAN QNH PRESSURE IN HPA 1021.2 1019.5 1020.5 ****** 1020.6 1023.0 1030.5 1032.9 1028.9 1024.2 1023.6 1024.3 ****** MAX. QNH PRESSURE IN HPA 1029.8 1027.4 1027.8 ****** 1027.2 1030.8 1035.2 1041.7 1044.4 1031.1 1031.8 1036.6 ****** DAY 5 22 3 ** 19 3 13 30 8 15 16 7 MIN. QNH PRESSURE IN HPA 1010.5 1006.3 1016.5 ****** 1013.5 1018.1 1023.7 1025.3 1018.9 1016.9 1012.7 1014.0 ****** DAY 20 6 10 ** 10 19 24 15 15 2 9 27 MEAN QFF PRESSURE IN HPA 1022.4 1020.7 1021.3 ****** 1014.6 1015.2 1018.7 1022.2 1019.6 1017.6 1023.6 1027.8 ****** MAX. QFF PRESSURE IN HPA 1032.2 1028.2 1032.9 ****** 1022.5 1023.5 1022.4 1032.0 1035.0 1024.8 1033.3 1041.7 ****** DAY 21 19 3 ** 19 3 27 30 8 15 21 7 MIN. QFF PRESSURE IN HPA 1012.1 1005.9 1014.0 ****** 1008.1 1009.5 1011.9 1013.0 1009.5 1011.0 1010.9 1012.4 ****** DAY 12 6 1 ** 10 12 24 15 15 2 9 27 PRESSURE AT HOUR 0300 UTC. MEAN QFE PRESSURE IN HPA 866.2 863.2 864.1 864.1 863.3 865.8 873.5 875.4 871.8 869.1 866.9 867.5 867.6 MAX. QFE PRESSURE IN HPA 873.8 870.5 871.0 870.3 871.0 873.1 877.4 882.0 885.6 874.5 874.0 877.8 885.6 DAY 24 22 28 5 19 3 13 31 8 16 16 7 MIN. QFE PRESSURE IN HPA 855.4 850.3 858.0 859.6 855.0 862.0 866.9 869.0 863.0 862.4 858.0 857.0 850.3 DAY 20 6 25 10 3 21 24 15 15 2 9 27 MEAN QNH PRESSURE IN HPA 1022.8 1019.4 1020.5 1020.4 1019.5 1022.4 1031.2 1033.3 1029.3 1026.2 1023.6 1024.3 1024.4 MAX. QNH PRESSURE IN HPA 1031.6 1027.8 1028.4 1027.6 1028.4 1030.8 1035.7 1040.9 1045.1 1032.4 1031.8 1036.1 1045.1 DAY 24 22 28 5 19 3 13 31 8 16 16 7 MIN. QNH PRESSURE IN HPA 1010.5 1004.7 1013.5 1015.3 1010.0 1018.1 1023.7 1026.1 1019.2 1018.5 1013.5 1012.3 1004.7 DAY 20 6 25 10 3 21 24 15 15 2 9 27 MEAN QFF PRESSURE IN HPA 1026.9 1021.5 1021.4 1017.4 1014.7 1014.7 1020.1 1023.3 1021.2 1021.7 1024.6 1028.9 1021.4 MAX. QFF PRESSURE IN HPA 1042.7 1029.4 1033.4 1026.1 1024.7 1022.9 1024.5 1032.7 1036.9 1029.2 1034.5 1042.1 1042.7 DAY 24 22 3 5 18 3 22 31 8 16 16 7 MIN. QFF PRESSURE IN HPA 1011.7 1006.1 1011.5 1012.7 1005.8 1008.2 1012.3 1015.4 1011.2 1012.4 1011.7 1011.8 1005.8 DAY 12 6 31 11 3 27 24 15 15 1 9 27 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION MAHABAD (40726) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 36 46 N LONGITUDE 45 43 E DATA PROCESSING CENTER ELEVATION 1385.0 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 867.0 864.2 865.1 864.7 863.8 866.1 873.8 875.9 872.1 870.1 867.7 868.2 868.2 MAX. QFE PRESSURE IN HPA 874.4 871.6 872.1 870.7 872.1 874.0 878.0 883.0 886.0 875.2 874.8 878.6 886.0 DAY 24 22 27 5 19 3 12 30 8 16 15 7 MIN. QFE PRESSURE IN HPA 856.9 853.5 859.2 859.7 855.2 862.0 867.9 869.8 863.4 863.3 859.0 855.0 853.5 DAY 19 6 31 10 3 21 24 15 15 1 8 27 MEAN QNH PRESSURE IN HPA 1023.8 1020.6 1021.6 1021.2 1020.1 1022.7 1031.6 1034.0 1029.6 1027.4 1024.6 1025.1 1025.2 MAX. QNH PRESSURE IN HPA 1032.2 1029.0 1029.6 1028.0 1029.6 1031.8 1036.4 1042.1 1045.5 1033.2 1032.7 1037.0 1045.5 DAY 24 22 27 5 19 3 12 30 8 16 15 7 MIN. QNH PRESSURE IN HPA 1012.2 1008.3 1014.9 1015.4 1010.3 1018.1 1024.8 1027.0 1019.7 1019.5 1014.6 1010.0 1008.3 DAY 19 6 31 10 3 21 24 15 15 1 8 27 MEAN QFF PRESSURE IN HPA 1023.9 1022.8 1023.6 ****** 1015.6 1015.4 1020.1 1023.6 1020.4 1020.3 1025.3 1029.3 ****** MAX. QFF PRESSURE IN HPA 1033.6 1031.2 1032.5 ****** 1024.8 1023.8 1024.6 1032.8 1036.3 1028.0 1035.2 1043.6 ****** DAY 5 22 3 ** 19 3 12 31 8 15 15 7 MIN. QFF PRESSURE IN HPA 1012.2 1008.9 1015.6 ****** 1010.4 1008.5 1011.7 1015.7 1010.7 1013.6 1012.7 1009.5 ****** DAY 12 6 1 ** 10 12 24 15 15 1 9 27 PRESSURE AT HOUR 0900 UTC. MEAN QFE PRESSURE IN HPA 866.2 863.9 864.8 864.5 863.3 865.6 873.1 875.3 871.2 869.4 867.0 867.7 867.7 MAX. QFE PRESSURE IN HPA 874.0 870.9 872.2 869.9 871.3 873.0 877.0 882.7 885.3 874.8 874.2 877.0 885.3 DAY 24 22 27 5 19 2 12 30 7 15 15 7 MIN. QFE PRESSURE IN HPA 853.9 855.0 858.6 859.8 855.4 861.2 867.7 869.0 863.0 861.4 857.3 853.8 853.8 DAY 19 6 25 10 3 21 24 14 15 1 8 27 MEAN QNH PRESSURE IN HPA 1022.9 1020.2 1021.3 1021.0 1019.5 1022.1 1030.8 1033.3 1028.5 1026.6 1023.7 1024.6 1024.5 MAX. QNH PRESSURE IN HPA 1031.8 1028.2 1029.7 1027.1 1028.7 1030.6 1035.2 1041.7 1044.7 1032.7 1032.0 1035.2 1044.7 DAY 24 22 27 5 19 2 12 30 7 15 15 7 MIN. QNH PRESSURE IN HPA 1008.8 1010.0 1014.2 1015.5 1010.5 1017.1 1024.6 1026.1 1019.2 1017.4 1012.7 1008.7 1008.7 DAY 19 6 25 10 3 21 24 14 15 1 8 27 MEAN QFF PRESSURE IN HPA 1021.8 1021.6 1022.6 ****** 1014.4 1014.9 1019.0 1022.3 1018.9 1018.6 1023.8 1028.0 ****** MAX. QFF PRESSURE IN HPA 1030.2 1029.0 1030.6 ****** 1023.4 1023.1 1022.8 1031.8 1035.4 1027.1 1033.0 1040.3 ****** DAY 5 19 3 ** 19 2 12 30 7 15 15 7 MIN. QFF PRESSURE IN HPA 1008.9 1009.9 1015.9 ****** 1008.4 1007.2 1012.8 1013.6 1009.5 1009.8 1010.9 1008.5 ****** DAY 19 6 1 ** 22 12 24 14 15 1 8 27 PRESSURE AT HOUR 1200 UTC. MEAN QFE PRESSURE IN HPA 865.1 862.4 863.4 863.6 862.2 864.4 871.6 873.8 870.0 868.6 866.1 866.8 866.5 MAX. QFE PRESSURE IN HPA 873.1 868.8 871.1 868.5 868.6 872.0 876.0 881.2 884.0 874.5 874.6 875.0 884.0 DAY 23 22 27 4 19 2 12 30 3 15 15 7 MIN. QFE PRESSURE IN HPA 851.0 854.6 858.0 858.6 853.6 860.0 866.2 867.5 861.8 859.8 856.3 853.0 851.0 DAY 19 6 31 10 3 21 24 14 15 1 8 27 MEAN QNH PRESSURE IN HPA 1021.6 1018.6 1019.7 1019.9 1018.3 1020.8 1029.0 1031.6 1027.2 1025.6 1022.8 1023.5 1023.2 MAX. QNH PRESSURE IN HPA 1030.8 1025.8 1028.5 1025.5 1025.6 1029.5 1034.1 1040.0 1043.2 1032.4 1032.5 1032.9 1043.2 DAY 23 22 27 4 19 2 12 30 3 15 15 7 MIN. QNH PRESSURE IN HPA 1005.5 1009.6 1013.5 1014.2 1008.4 1015.8 1022.9 1024.3 1017.8 1015.5 1011.5 1007.7 1005.5 DAY 19 6 31 10 3 21 24 14 15 1 8 27 MEAN QFF PRESSURE IN HPA 1020.7 1019.6 1020.7 ****** 1013.3 1014.2 1017.2 1021.0 1017.9 1017.9 1022.9 1027.0 ****** MAX. QFF PRESSURE IN HPA 1027.6 1026.7 1029.6 ****** 1020.4 1022.5 1021.3 1030.3 1034.0 1026.7 1033.6 1038.4 ****** DAY 5 19 2 ** 19 2 8 30 3 15 15 6 MIN. QFF PRESSURE IN HPA 1007.1 1009.5 1012.6 ****** 1007.2 1007.2 1011.4 1012.6 1008.8 1008.3 1009.6 1008.1 ****** DAY 19 6 1 ** 22 12 24 14 15 1 7 27 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION MAHABAD (40726) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 36 46 N LONGITUDE 45 43 E DATA PROCESSING CENTER ELEVATION 1385.0 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 865.7 862.7 863.2 863.5 862.2 864.0 871.1 873.4 869.8 868.4 866.1 867.2 866.4 MAX. QFE PRESSURE IN HPA 874.3 868.5 869.8 868.8 868.0 871.2 875.0 880.7 886.0 873.9 874.0 876.2 886.0 DAY 23 22 27 4 18 2 12 30 3 15 15 6 MIN. QFE PRESSURE IN HPA 851.3 857.0 857.7 858.3 854.0 860.2 865.9 867.0 861.5 860.0 855.3 855.0 851.3 DAY 19 15 24 10 3 12 24 6 14 1 8 27 MEAN QNH PRESSURE IN HPA 1022.3 1018.8 1019.5 1019.8 1018.3 1020.4 1028.4 1031.1 1027.0 1025.3 1022.8 1024.1 1023.1 MAX. QNH PRESSURE IN HPA 1032.1 1025.5 1027.0 1025.8 1024.9 1028.6 1032.9 1039.5 1045.5 1031.7 1031.8 1034.3 1045.5 DAY 23 22 27 4 18 2 12 30 3 15 15 6 MIN. QNH PRESSURE IN HPA 1005.8 1012.3 1013.1 1013.8 1008.9 1016.0 1022.5 1023.8 1017.5 1015.8 1010.4 1010.0 1005.8 DAY 19 15 24 10 3 12 24 6 14 1 8 27 MEAN QFF PRESSURE IN HPA 1026.3 1020.8 1020.3 1016.7 1013.3 1012.6 1017.4 1021.2 1018.9 1020.8 1023.7 1028.6 1020.0 MAX. QFF PRESSURE IN HPA 1040.9 1027.2 1030.7 1024.9 1020.9 1021.3 1021.0 1031.1 1038.1 1027.6 1034.8 1041.0 1041.0 DAY 23 19 2 4 17 2 12 30 3 15 15 6 MIN. QFF PRESSURE IN HPA 1007.6 1013.6 1012.3 1010.8 1004.4 1006.9 1011.6 1013.4 1009.6 1009.8 1009.3 1010.5 1004.4 DAY 19 6 24 10 2 27 24 14 14 1 8 27 PRESSURE AT HOUR 1800 UTC. MEAN QFE PRESSURE IN HPA 864.2 863.2 864.4 ****** 864.3 866.3 872.2 874.6 870.7 ****** 866.8 867.9 ****** MAX. QFE PRESSURE IN HPA 871.5 870.0 871.0 ****** 870.2 872.8 876.2 882.0 885.0 ****** 874.0 878.0 ****** DAY 4 21 2 ** 19 2 12 29 3 ** 15 6 MIN. QFE PRESSURE IN HPA 851.1 854.3 860.8 ****** 860.0 861.7 867.0 867.8 862.0 ****** 856.5 857.2 ****** DAY 19 5 9 ** 12 12 19 14 14 ** 8 27 MEAN QNH PRESSURE IN HPA 1020.6 1019.4 1020.8 ****** 1020.7 1022.9 1029.8 1032.5 1028.0 ****** 1023.5 1024.8 ****** MAX. QNH PRESSURE IN HPA 1028.9 1027.2 1028.4 ****** 1027.4 1030.4 1034.3 1040.9 1044.4 ****** 1031.8 1036.4 ****** DAY 4 21 2 ** 19 2 12 29 3 ** 15 6 MIN. QNH PRESSURE IN HPA 1005.6 1009.2 1016.7 ****** 1015.8 1017.7 1023.8 1024.7 1018.1 ****** 1011.8 1012.6 ****** DAY 19 5 9 ** 12 12 19 14 14 ** 8 27 MEAN QFF PRESSURE IN HPA 1022.7 1021.6 1022.4 ****** 1015.0 1014.8 1018.3 1022.0 1018.3 ****** 1024.2 1029.0 ****** MAX. QFF PRESSURE IN HPA 1030.8 1029.3 1033.1 ****** 1022.6 1023.3 1022.2 1031.3 1035.7 ****** 1034.0 1042.9 ****** DAY 4 19 2 ** 19 2 2 24 7 ** 15 6 MIN. QFF PRESSURE IN HPA 1007.4 1010.8 1015.7 ****** 1008.6 1008.0 1011.9 1013.4 1009.8 ****** 1009.9 1012.9 ****** DAY 19 5 31 ** 30 12 24 14 14 ** 8 26 PRESSURE AT HOUR 2100 UTC. MEAN QFE PRESSURE IN HPA 864.6 863.4 864.4 ****** 864.5 866.6 872.9 875.0 870.7 ****** 866.8 867.9 ****** MAX. QFE PRESSURE IN HPA 872.0 870.2 871.0 ****** 870.0 873.3 876.8 882.3 885.0 ****** 874.0 878.2 ****** DAY 4 21 2 ** 18 2 12 29 7 ** 15 6 MIN. QFE PRESSURE IN HPA 852.9 852.4 860.8 ****** 858.8 862.8 867.3 868.0 861.8 ****** 857.0 858.4 ****** DAY 19 5 9 ** 9 18 19 14 14 ** 8 27 MEAN QNH PRESSURE IN HPA 1021.1 1019.7 1020.8 ****** 1020.9 1023.3 1030.5 1032.9 1028.0 ****** 1023.6 1024.8 ****** MAX. QNH PRESSURE IN HPA 1029.5 1027.4 1028.4 ****** 1027.2 1031.0 1035.0 1041.3 1044.4 ****** 1031.8 1036.6 ****** DAY 4 21 2 ** 18 2 12 29 7 ** 15 6 MIN. QNH PRESSURE IN HPA 1007.6 1007.1 1016.7 ****** 1014.4 1019.0 1024.1 1024.9 1017.8 ****** 1012.3 1013.9 ****** DAY 19 5 9 ** 9 18 19 14 14 ** 8 27 MEAN QFF PRESSURE IN HPA 1022.1 1020.9 1022.1 ****** 1014.7 1014.9 1018.7 1022.0 1018.5 ****** 1023.6 1028.4 ****** MAX. QFF PRESSURE IN HPA 1030.8 1028.1 1033.6 ****** 1022.4 1022.8 1022.1 1031.6 1035.3 ****** 1033.2 1041.9 ****** DAY 4 19 2 ** 18 2 2 30 7 ** 20 6 MIN. QFF PRESSURE IN HPA 1009.5 1007.1 1015.9 ****** 1009.1 1009.4 1013.1 1012.4 1008.5 ****** 1010.1 1012.9 ****** DAY 19 5 31 ** 30 12 19 14 14 ** 8 26 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION MAHABAD (40726) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 36 46 N LONGITUDE 45 43 E DATA PROCESSING CENTER ELEVATION 1385.0 M MEANS AND EXTREMES FOR THE YEAR 1987 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AIR TEMPERATURE (C) 2.8 4.8 4.5 11.3 19.2 23.1 25.7 24.6 20.1 10.8 7.3 3.1 13.1 MINIMUN AIR TEMPERATURE (C) -1.1 0.9 0.6 4.7 11.2 13.9 17.3 15.3 12.0 6.0 2.2 0.0 6.9 DAYS WITH MINIMUM TEMP. >=21 0 0 0 0 0 0 2 0 1 0 0 0 3 DAYS WITH MINIMUM TEMP. <=-4 9 3 3 0 0 0 0 0 0 0 3 7 25 DAYS WITH FREEZING MIN.<= 0 16 10 13 4 0 0 0 0 0 1 10 15 69 TEMPERATURE RECORDS LOWEST(C) -7.0 -7.8 -5.0 -2.4 4.0 9.4 13.8 11.0 6.2 -0.4 -5.6 -12.6 -12.6 DAY 14 11 16 6 4 6 11 30 24 12 30 31 MAXIMUM AIR TEMPERATURE (C) 8.3 10.0 9.1 17.6 26.7 31.3 33.1 32.8 28.0 15.6 13.8 6.7 19.4 DAYS WITH MAXIMUM TEMP. >=30 0 0 0 0 3 21 27 27 10 3 0 0 91 DAYS WITH MAXIMUM TEMP. <= 0 0 0 0 0 0 0 0 0 0 0 0 4 4 TEMPERATURE RECORDS HIGHEST(C) 15.0 19.6 15.0 25.0 30.0 37.6 38.0 39.0 33.0 31.0 21.2 13.8 39.0 DAY 31 3 8 25 1 24 14 3 5 2 18 11 DIF. BETWEEN (MAX.-MIN.) (C) 9.4 9.1 8.5 12.9 15.5 17.4 15.8 17.5 16.0 9.6 11.6 6.7 12.5 MEAN DAILY TEMP. (MDT) (C) 3.6 5.4 4.8 11.1 19.0 22.6 25.2 24.1 20.0 10.8 8.0 3.3 13.2 COOLING DEG. DAYS(BASE 21 0C) 0.0 0.0 0.0 0.0 3.5 52.6 127.8 103.4 14.6 1.3 0.0 0.0 303.2 HEATING DEG. DAYS(BASE 18 0C) 447.4 325.5 407.8 206.5 13.3 0.0 0.0 0.1 9.1 231.0 300.5 454.4 2395.8 DEWPOINT (MEAN C) -3.3 -0.3 -1.5 2.3 7.3 10.0 14.0 11.8 9.7 4.8 0.3 -0.5 4.5 MIXING RATIO (G/KG) 3.54 4.39 4.09 5.41 7.66 9.22 12.08 10.45 9.09 6.38 4.64 4.48 6.79 VAPOUR PRESSURE (HPA) 4.91 6.06 5.63 7.44 10.51 12.59 16.42 14.26 12.47 8.82 6.45 6.19 9.31 SATURATION DEF. (HPA) 2.83 2.93 3.04 6.66 12.78 17.30 18.04 18.64 12.44 4.97 4.44 1.78 8.82 RELATIVE HUMIDITY (MEAN %) 67 72 68 58 49 46 51 47 54 72 65 78 61 RELATIVE HUMIDITY (MAX. %) 81 87 89 81 74 63 67 63 71 89 85 90 78 RELATIVE HUMIDITY (MIN. %) 48 56 45 38 33 32 37 35 40 56 43 65 44 RELATIVE HUMIDITY (MEAN% 03UTC) 74 79 78 73 71 60 66 62 70 86 81 84 74 RELATIVE HUMIDITY (MEAN% 09UTC) 60 66 60 46 40 39 49 42 49 64 52 71 53 RELATIVE HUMIDITY (MEAN% 15UTC) 61 64 60 47 37 35 40 38 43 67 55 78 52 RH=0 => RELATIVE HUMIDITY < 0.5% AMOUNT OF PRECIPITATION MM. 19.2 32.2 40.6 16.6 19.5 3.2 2.0 0.0 0.0 110.4 25.0 154.7 423.4 DAYS WITH PRECIPITATION >=10 1 1 0 0 0 0 0 0 0 5 1 4 12 DAYS WITH PRECIPITATION >= 5 1 2 4 1 2 0 0 0 0 7 1 11 29 DAYS WITH PRECIPITATION >= 1 5 6 9 4 4 1 1 0 0 11 3 14 58 DAYS WITH PRECIPITATION 5 11 14 8 6 2 1 0 0 12 3 16 78 GREATEST DAILY PRECIPITATION 11.0 14.0 8.8 9.0 9.0 2.6 2.0 0.0 0.0 23.0 18.0 32.4 32.4 DAY 26 8 6 17 11 18 29 ** ** 30 3 23 DAY WITH THUNDER STORM 0 0 0 2 6 0 1 0 1 3 0 0 13 DAYS WITH SNOW OR SLEET 2 3 8 1 0 0 0 0 0 1 0 6 21 DAYS WITH DUST 0 0 0 0 0 0 0 0 3 0 0 0 3 WIND DIRECTION (PREVAILING) 45 45 360 45 45 45 225 180 45 45 225 225 45 PREVAILING WIND SPEED(KNOTS) 9.8 9.6 9.8 11.1 11.3 9.5 6.4 6.6 8.6 7.5 13.9 11.4 10.1 PREVAILING WIND PERCENT 16.1 17.0 25.4 16.7 20.2 11.3 11.3 8.9 8.8 5.8 18.8 25.8 11.6 CALMS PERCENT OF WIND 46.4 52.9 45.6 55.4 64.9 70.4 61.3 69.8 69.6 76.4 62.4 49.6 60.3 NO. OF WIND OBSERVATION 248 223 248 240 248 240 248 248 240 225 218 236 2862 VECTOR WIND DIRECTION (MEAN) 352 10 17 26 32 43 39 69 78 196 210 203 12 VECTOR WIND MAGNITUDE(KNOTS) 3.0 2.8 4.5 3.2 2.5 0.9 0.5 0.4 0.2 0.2 3.2 5.5 0.7 WIND STEADINESES (MEAN %) 53.6 65.1 86.5 72.7 75.8 37.5 15.2 16.7 8.7 11.1 72.7 93.2 18.4 WIND SPEED (MEAN KNOTS) 5.6 4.3 5.2 4.4 3.3 2.4 3.3 2.4 2.3 1.8 4.4 5.9 3.8 FASTEST WIND DIRECTION 280 30 30 330 40 10 30 40 60 230 210 200 330 FASTEST WIND SPEED (KNOTS) 25 29 25 39 27 19 23 19 17 17 31 33 39 DAY 2 25 6 13 2 2 17 11 5 3 21 12 DAYS WITH SKY CLEAR (0-2)/8 18 8 5 17 14 27 31 27 30 13 21 8 219 DAYS WITH P.CLOUDY (3-6)/8 12 14 19 8 15 2 0 4 0 8 7 12 101 DAYS WITH CLOUDY (7-8)/8 1 6 7 5 2 1 0 0 0 10 2 11 45 DAYS WITH VISIBILITY =< 2 KM 3 2 2 0 0 0 0 0 3 1 0 3 14 DURATION OF SUNSHINE HOURS 200.1 142.6 162.1 255.4 286.0 319.9 368.7 344.4 275.5 157.5 221.7 106.8 2840.7 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION MAHABAD (40726) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 36 46 N LONGITUDE 45 43 E DATA PROCESSING CENTER ELEVATION 1385.0 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 867.8 865.7 860.9 864.5 864.7 862.8 863.1 863.5 866.8 869.6 870.8 867.2 865.6 MAX. QFE PRESSURE IN HPA 876.8 874.0 871.8 872.8 870.8 867.5 868.6 872.8 872.0 876.0 881.6 880.0 881.6 DAY-HOUR 17- 6 1- 6 23- 6 22- 3 13- 3 6- 6 11- 3 8- 6 25- 6 16- 6 30- 6 1- 0 MIN. QFE PRESSURE IN HPA 856.0 855.0 849.0 855.2 857.9 858.0 857.0 857.4 861.5 860.6 858.3 857.0 849.0 DAY-HOUR 6-12 10-12 13-15 3-21 21-15 12-15 2-15 25-12 5-15 4- 3 7- 3 23-21 MEAN QNH PRESSURE IN HPA 1024.7 1022.2 1016.8 1020.9 1021.1 1018.9 1019.3 1019.8 1023.5 1026.8 1028.1 1024.0 1022.2 MAX. QNH PRESSURE IN HPA 1035.0 1031.8 1029.3 1030.4 1028.1 1024.3 1025.6 1030.4 1029.5 1034.1 1040.5 1038.7 1040.5 DAY-HOUR 17- 6 1- 6 23- 6 22- 3 13- 3 6- 6 11- 3 8- 6 25- 6 16- 6 30- 6 1- 0 MIN. QNH PRESSURE IN HPA 1011.2 1010.0 1003.2 1010.3 1013.4 1013.5 1012.3 1012.8 1017.5 1016.5 1013.8 1012.3 1003.2 DAY-HOUR 6-12 10-12 13-15 3-21 21-15 12-15 2-15 25-12 5-15 4- 3 7- 3 23-21 MEAN QFF PRESSURE IN HPA 1026.8 1023.3 1017.6 1017.7 1013.2 1008.8 1007.6 1008.7 1015.1 1023.8 1028.6 1025.8 1018.1 MAX. QFF PRESSURE IN HPA 1039.8 1034.7 1031.6 1030.5 1023.9 1016.5 1016.3 1018.6 1024.3 1032.1 1045.5 1044.9 1045.5 DAY-HOUR 12- 6 12- 6 23- 6 22- 3 13- 3 6- 3 11- 3 8- 3 24- 6 10- 6 30- 6 1- 3 MIN. QFF PRESSURE IN HPA 1012.4 1010.9 1004.7 1004.1 1004.2 1004.2 1001.4 1001.5 1005.9 1006.5 1009.8 1012.7 1001.4 DAY-HOUR 6-12 25- 9 19- 6 25- 9 21-15 13-12 3- 0 25-12 6- 0 4- 0 7- 3 23-21 PRESSURE AT HOUR 0000 UTC. MEAN QFE PRESSURE IN HPA 867.9 866.1 860.5 864.3 864.6 862.8 863.3 863.7 866.7 869.7 871.7 867.5 865.7 MAX. QFE PRESSURE IN HPA 876.0 873.4 870.0 872.0 869.6 866.0 868.0 871.0 871.0 874.5 880.6 880.0 880.6 DAY 12 1 23 22 13 6 11 8 26 16 30 1 MIN. QFE PRESSURE IN HPA 859.0 858.0 849.0 855.2 858.2 859.2 857.0 859.5 862.5 861.0 864.0 858.3 849.0 DAY 24 9 14 4 22 13 3 25 6 4 21 24 MEAN QNH PRESSURE IN HPA 1024.8 1022.8 1016.3 1020.7 1021.1 1019.0 1019.5 1020.0 1023.4 1026.9 1029.2 1024.3 1022.3 MAX. QNH PRESSURE IN HPA 1034.1 1031.1 1027.2 1029.5 1026.7 1022.6 1024.9 1028.4 1028.4 1032.4 1039.3 1038.7 1039.3 DAY 12 1 23 22 13 6 11 8 26 16 30 1 MIN. QNH PRESSURE IN HPA 1014.6 1013.5 1003.2 1010.3 1013.7 1014.9 1012.3 1015.2 1018.6 1016.9 1020.3 1013.8 1003.2 DAY 24 9 14 4 22 13 3 25 6 4 21 24 MEAN QFF PRESSURE IN HPA 1026.4 1023.4 1016.8 1017.4 1013.1 1009.0 1007.7 1008.8 1014.7 1023.2 1028.3 1025.7 1017.9 MAX. QFF PRESSURE IN HPA 1037.2 1032.7 1029.6 1029.0 1021.7 1014.4 1015.6 1015.7 1023.3 1029.4 1043.8 1042.7 1043.8 DAY 12 7 23 22 13 6 11 8 24 11 30 1 MIN. QFF PRESSURE IN HPA 1012.6 1014.1 1005.5 1005.7 1004.8 1005.5 1001.4 1003.5 1005.9 1006.5 1015.2 1014.4 1001.4 DAY 24 9 14 19 22 13 3 15 6 4 21 24 PRESSURE AT HOUR 0300 UTC. MEAN QFE PRESSURE IN HPA 867.8 865.9 860.7 864.6 865.1 863.4 863.9 864.2 867.2 869.6 870.2 867.3 865.8 MAX. QFE PRESSURE IN HPA 876.0 873.7 870.4 872.8 870.8 867.0 868.6 872.0 871.0 875.0 880.6 880.0 880.6 DAY 17 1 23 22 13 28 11 8 25 16 30 1 MIN. QFE PRESSURE IN HPA 858.5 858.0 850.0 856.0 859.9 860.0 857.4 859.7 863.0 860.6 858.3 859.0 850.0 DAY 6 10 14 19 22 9 3 25 6 4 7 24 MEAN QNH PRESSURE IN HPA 1024.6 1022.5 1016.6 1021.0 1021.6 1019.7 1020.2 1020.6 1024.1 1026.7 1027.5 1024.2 1022.4 MAX. QNH PRESSURE IN HPA 1034.1 1031.4 1027.7 1030.4 1028.1 1023.8 1025.6 1029.5 1028.4 1032.9 1039.3 1038.7 1039.3 DAY 17 1 23 22 13 28 11 8 25 16 30 1 MIN. QNH PRESSURE IN HPA 1014.0 1013.5 1004.3 1011.2 1015.6 1015.8 1012.8 1015.4 1019.2 1016.5 1013.8 1014.6 1004.3 DAY 6 10 14 19 22 9 3 25 6 4 7 24 MEAN QFF PRESSURE IN HPA 1027.4 1024.0 1017.8 1018.5 1014.5 1010.3 1009.2 1010.6 1016.5 1024.5 1027.5 1026.5 1018.9 MAX. QFF PRESSURE IN HPA 1038.6 1034.1 1030.3 1030.5 1023.9 1016.5 1016.3 1018.6 1024.1 1031.1 1045.3 1044.9 1045.3 DAY 17 22 23 22 13 6 11 8 24 10 30 1 MIN. QFF PRESSURE IN HPA 1014.8 1014.7 1007.3 1004.3 1006.3 1005.5 1002.1 1005.1 1007.5 1007.2 1009.8 1015.8 1002.1 DAY 24 10 14 25 22 2 3 15 6 4 7 24 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION MAHABAD (40726) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 36 46 N LONGITUDE 45 43 E DATA PROCESSING CENTER ELEVATION 1385.0 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 868.6 866.4 861.6 865.0 865.4 863.8 864.3 864.6 868.0 870.3 871.1 868.0 866.4 MAX. QFE PRESSURE IN HPA 876.8 874.0 871.8 872.8 870.6 867.5 868.6 872.8 872.0 876.0 881.6 880.0 881.6 DAY 17 1 23 22 13 6 11 8 25 16 30 1 MIN. QFE PRESSURE IN HPA 858.0 858.0 850.0 856.6 860.0 860.0 859.0 860.4 864.0 861.8 859.5 859.0 850.0 DAY 6 10 19 4 23 9 3 25 6 4 7 23 MEAN QNH PRESSURE IN HPA 1025.6 1023.1 1017.6 1021.5 1022.0 1020.1 1020.7 1021.0 1024.9 1027.6 1028.5 1024.9 1023.1 MAX. QNH PRESSURE IN HPA 1035.0 1031.8 1029.3 1030.4 1027.9 1024.3 1025.6 1030.4 1029.5 1034.1 1040.5 1038.7 1040.5 DAY 17 1 23 22 13 6 11 8 25 16 30 1 MIN. QNH PRESSURE IN HPA 1013.5 1013.5 1004.3 1011.9 1015.8 1015.8 1014.6 1016.2 1020.3 1017.8 1015.2 1014.6 1004.3 DAY 6 10 19 4 23 9 3 25 6 4 7 23 MEAN QFF PRESSURE IN HPA 1028.3 1024.4 1018.5 1018.5 1013.9 1009.6 1008.8 1009.8 1016.3 1024.9 1030.6 1027.1 1019.2 MAX. QFF PRESSURE IN HPA 1039.8 1034.7 1031.6 1029.2 1022.6 1015.9 1015.8 1018.5 1024.3 1032.1 1045.5 1044.4 1045.5 DAY 12 12 23 22 13 6 11 8 24 10 30 1 MIN. QFF PRESSURE IN HPA 1014.2 1014.3 1004.7 1004.5 1005.9 1005.3 1003.1 1004.4 1008.6 1009.6 1018.7 1014.9 1003.1 DAY 6 10 19 25 23 9 16 15 6 4 21 23 PRESSURE AT HOUR 0900 UTC. MEAN QFE PRESSURE IN HPA 868.1 866.0 861.2 864.6 864.9 863.0 863.5 863.8 867.1 869.8 870.4 867.3 865.8 MAX. QFE PRESSURE IN HPA 875.4 873.6 871.0 871.6 870.0 866.2 867.6 871.8 871.5 874.8 880.8 879.0 880.8 DAY 17 1 23 22 13 30 11 8 25 16 30 1 MIN. QFE PRESSURE IN HPA 857.0 857.0 850.0 856.4 860.0 859.8 858.8 859.4 863.0 861.8 858.5 858.2 850.0 DAY 6 10 19 4 23 13 3 25 11 4 7 23 MEAN QNH PRESSURE IN HPA 1025.1 1022.6 1017.2 1021.0 1021.3 1019.2 1019.7 1020.1 1023.9 1027.0 1027.7 1024.1 1022.4 MAX. QNH PRESSURE IN HPA 1033.4 1031.3 1028.4 1029.0 1027.2 1022.9 1024.5 1029.3 1028.9 1032.7 1039.6 1037.5 1039.6 DAY 17 1 23 22 13 30 11 8 25 16 30 1 MIN. QNH PRESSURE IN HPA 1012.3 1012.3 1004.3 1011.6 1015.8 1015.5 1014.4 1015.1 1019.2 1017.8 1014.0 1013.7 1004.3 DAY 6 10 19 4 23 13 3 25 11 4 7 23 MEAN QFF PRESSURE IN HPA 1026.7 1023.0 1017.7 1017.3 1013.1 1008.6 1007.6 1008.3 1014.9 1023.6 1029.0 1025.3 1017.9 MAX. QFF PRESSURE IN HPA 1036.6 1033.4 1029.9 1026.8 1021.1 1013.5 1014.2 1016.8 1022.1 1030.3 1043.6 1041.6 1043.6 DAY 12 6 23 22 13 6 11 8 24 10 30 1 MIN. QFF PRESSURE IN HPA 1012.8 1010.9 1004.8 1004.1 1005.7 1005.0 1002.7 1003.5 1007.8 1009.5 1016.8 1013.6 1002.7 DAY 6 25 19 25 23 24 16 25 5 4 21 23 PRESSURE AT HOUR 1200 UTC. MEAN QFE PRESSURE IN HPA 866.8 864.6 860.4 863.8 863.9 862.0 862.3 862.4 866.0 868.9 869.5 866.4 864.8 MAX. QFE PRESSURE IN HPA 874.0 872.0 869.0 869.5 868.0 865.0 866.5 869.8 870.0 873.8 879.9 877.2 879.9 DAY 17 1 23 22 13 22 10 8 25 15 30 1 MIN. QFE PRESSURE IN HPA 856.0 855.0 850.7 855.7 859.0 858.4 857.0 857.4 861.8 861.0 859.4 858.4 850.7 DAY 6 10 13 4 24 13 3 25 5 4 6 23 MEAN QNH PRESSURE IN HPA 1023.6 1021.0 1016.3 1020.1 1020.3 1018.1 1018.4 1018.5 1022.7 1026.0 1026.6 1023.1 1021.2 MAX. QNH PRESSURE IN HPA 1031.8 1029.5 1026.1 1026.6 1024.9 1021.5 1023.2 1027.0 1027.2 1031.6 1038.5 1035.4 1038.5 DAY 17 1 23 22 13 22 10 8 25 15 30 1 MIN. QNH PRESSURE IN HPA 1011.2 1010.0 1005.1 1010.8 1014.6 1013.9 1012.3 1012.8 1017.8 1016.9 1015.1 1013.9 1005.1 DAY 6 10 13 4 24 13 3 25 5 4 6 23 MEAN QFF PRESSURE IN HPA 1024.9 1021.8 1016.7 1016.6 1012.1 1007.7 1006.1 1006.9 1013.6 1022.5 1027.6 1024.4 1016.8 MAX. QFF PRESSURE IN HPA 1034.3 1032.3 1027.9 1024.9 1019.1 1011.1 1012.7 1014.1 1019.9 1028.6 1042.4 1039.1 1042.4 DAY 12 6 22 21 13 6 11 8 23 10 30 1 MIN. QFF PRESSURE IN HPA 1012.4 1010.9 1007.0 1004.6 1005.3 1004.2 1001.6 1001.5 1007.2 1009.3 1016.6 1014.1 1001.5 DAY 6 10 19 25 24 13 3 25 5 3 21 23 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION MAHABAD (40726) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 36 46 N LONGITUDE 45 43 E DATA PROCESSING CENTER ELEVATION 1385.0 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 867.4 865.0 860.6 863.7 863.8 861.7 861.8 862.2 865.6 869.2 870.0 866.8 864.8 MAX. QFE PRESSURE IN HPA 874.8 872.4 869.0 869.0 868.0 864.5 866.0 868.4 870.0 874.0 880.2 877.5 880.2 DAY 17 1 22 21 12 29 10 7 25 16 30 1 MIN. QFE PRESSURE IN HPA 856.0 857.5 849.0 856.0 857.9 858.0 857.0 858.0 861.5 862.2 859.5 859.2 849.0 DAY 6 8 13 3 21 12 2 25 5 3 6 23 MEAN QNH PRESSURE IN HPA 1024.2 1021.5 1016.4 1020.0 1020.1 1017.7 1017.9 1018.3 1022.2 1026.3 1027.2 1023.6 1021.3 MAX. QNH PRESSURE IN HPA 1032.7 1030.0 1026.1 1026.1 1024.9 1020.9 1022.6 1025.4 1027.2 1031.8 1038.9 1035.8 1038.9 DAY 17 1 22 21 12 29 10 7 25 16 30 1 MIN. QNH PRESSURE IN HPA 1011.2 1012.9 1003.2 1011.2 1013.4 1013.5 1012.3 1013.5 1017.5 1018.3 1015.2 1014.9 1003.2 DAY 6 8 13 3 21 12 2 25 5 3 6 23 MEAN QFF PRESSURE IN HPA 1026.8 1023.2 1017.5 1017.3 1012.9 1007.9 1006.6 1008.0 1014.5 1024.2 1027.2 1025.9 1017.7 MAX. QFF PRESSURE IN HPA 1036.8 1033.2 1029.2 1026.6 1018.9 1011.8 1012.7 1014.2 1020.8 1031.9 1045.0 1041.5 1045.0 DAY 17 6 22 21 12 5 11 7 30 27 30 1 MIN. QFF PRESSURE IN HPA 1013.0 1012.6 1005.7 1005.0 1004.2 1004.5 1001.4 1004.0 1007.7 1010.4 1010.5 1016.3 1001.4 DAY 6 8 13 25 21 13 2 24 5 3 6 23 PRESSURE AT HOUR 1800 UTC. MEAN QFE PRESSURE IN HPA 868.1 865.8 861.3 864.7 864.8 862.6 862.9 863.5 866.7 869.9 872.1 867.3 865.8 MAX. QFE PRESSURE IN HPA 875.8 873.0 870.0 871.0 869.8 865.0 867.0 870.0 870.6 874.0 880.8 878.0 880.8 DAY 11 6 23 21 12 5 10 7 25 15 30 1 MIN. QFE PRESSURE IN HPA 857.4 858.5 850.8 856.0 858.1 859.0 857.7 859.2 862.6 862.4 865.0 858.2 850.8 DAY 6 8 13 3 21 8 2 25 10 3 20 23 MEAN QNH PRESSURE IN HPA 1025.0 1022.4 1017.3 1021.2 1021.3 1018.7 1019.1 1019.8 1023.5 1027.1 1029.6 1024.1 1022.4 MAX. QNH PRESSURE IN HPA 1033.8 1030.6 1027.2 1028.4 1027.0 1021.5 1023.8 1027.2 1027.9 1031.8 1039.6 1036.4 1039.6 DAY 11 6 23 21 12 5 10 7 25 15 30 1 MIN. QNH PRESSURE IN HPA 1012.8 1014.0 1005.2 1011.2 1013.6 1014.6 1013.1 1014.9 1018.7 1018.5 1021.5 1013.7 1005.2 DAY 6 8 13 3 21 8 2 25 10 3 20 23 MEAN QFF PRESSURE IN HPA 1027.6 1024.0 1018.1 1018.1 1013.3 1008.4 1007.3 1008.7 1015.0 1024.1 1029.9 1026.1 1018.4 MAX. QFF PRESSURE IN HPA 1038.8 1034.2 1029.4 1028.3 1021.0 1013.5 1014.0 1015.0 1022.5 1030.1 1044.4 1041.6 1044.4 DAY 11 6 22 21 12 5 10 7 23 10 30 1 MIN. QFF PRESSURE IN HPA 1014.1 1013.1 1005.8 1007.3 1004.7 1004.6 1002.0 1004.3 1007.4 1009.1 1017.6 1014.5 1002.0 DAY 6 3 13 25 21 8 2 25 5 3 20 23 PRESSURE AT HOUR 2100 UTC. MEAN QFE PRESSURE IN HPA 868.0 865.6 861.2 864.9 864.9 862.9 863.3 863.8 866.9 870.0 872.2 867.0 865.9 MAX. QFE PRESSURE IN HPA 876.0 872.7 870.0 872.0 869.6 865.8 867.6 871.0 871.0 874.5 880.8 878.0 880.8 DAY 11 6 22 21 12 27 10 7 25 15 30 1 MIN. QFE PRESSURE IN HPA 858.4 858.5 850.4 855.2 858.6 859.2 857.5 859.6 862.8 862.0 864.2 857.0 850.4 DAY 6 8 13 3 21 8 2 25 10 3 20 23 MEAN QNH PRESSURE IN HPA 1025.0 1022.2 1017.1 1021.4 1021.4 1019.0 1019.5 1020.2 1023.7 1027.2 1029.8 1023.7 1022.5 MAX. QNH PRESSURE IN HPA 1034.1 1030.3 1027.2 1029.5 1026.7 1022.4 1024.5 1028.4 1028.4 1032.4 1039.6 1036.4 1039.6 DAY 11 6 22 21 12 27 10 7 25 15 30 1 MIN. QNH PRESSURE IN HPA 1013.9 1014.0 1004.8 1010.3 1014.2 1014.9 1012.9 1015.3 1019.0 1018.1 1020.6 1012.3 1004.8 DAY 6 8 13 3 21 8 2 25 10 3 20 23 MEAN QFF PRESSURE IN HPA 1026.6 1023.1 1017.6 1017.7 1013.2 1008.7 1007.7 1008.8 1015.1 1023.6 1029.2 1025.0 1018.0 MAX. QFF PRESSURE IN HPA 1037.7 1033.8 1029.2 1029.3 1021.0 1014.2 1014.7 1015.9 1022.8 1029.4 1043.8 1040.1 1043.8 DAY 11 6 22 21 12 5 10 7 23 10 30 1 MIN. QFF PRESSURE IN HPA 1012.9 1014.8 1007.2 1006.1 1005.1 1004.6 1001.6 1003.8 1006.3 1007.5 1015.6 1012.7 1001.6 DAY 23 8 13 3 21 8 2 24 5 3 20 23 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION MAHABAD (40726) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 36 46 N LONGITUDE 45 43 E DATA PROCESSING CENTER ELEVATION 1385.0 M MEANS AND EXTREMES FOR THE YEAR 1988 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AIR TEMPERATURE (C) -2.4 -0.1 5.7 10.9 17.5 21.4 24.2 23.8 21.1 14.9 7.4 3.0 12.3 MINIMUN AIR TEMPERATURE (C) -5.1 -2.8 1.7 5.6 10.7 13.0 16.4 16.6 11.6 8.2 2.4 -0.8 6.4 DAYS WITH MINIMUM TEMP. >=21 0 0 0 0 0 0 0 1 0 0 0 0 1 DAYS WITH MINIMUM TEMP. <=-4 20 13 1 0 0 0 0 0 0 0 2 9 45 DAYS WITH FREEZING MIN.<= 0 27 22 11 4 0 0 0 0 0 0 10 19 93 TEMPERATURE RECORDS LOWEST(C) -14.6 -9.0 -4.8 -1.6 4.4 10.0 11.0 10.4 8.6 2.0 -6.0 -12.0 -14.6 DAY 20 19 6 1 7 24 28 25 30 23 14 29 MAXIMUM AIR TEMPERATURE (C) 0.8 3.2 10.3 16.6 24.0 28.4 30.8 29.6 27.8 21.9 12.7 7.9 17.8 DAYS WITH MAXIMUM TEMP. >=30 0 0 0 0 0 10 18 12 7 0 0 0 47 DAYS WITH MAXIMUM TEMP. <= 0 11 9 0 0 0 0 0 0 0 0 0 3 23 TEMPERATURE RECORDS HIGHEST(C) 5.4 11.0 16.0 23.4 29.4 34.4 39.0 37.0 33.2 26.6 20.6 16.4 39.0 DAY 25 23 19 17 27 13 31 1 8 5 3 10 DIF. BETWEEN (MAX.-MIN.) (C) 5.9 6.0 8.6 11.0 13.3 15.4 14.4 13.0 16.2 13.7 10.3 8.7 11.4 MEAN DAILY TEMP. (MDT) (C) -2.1 0.2 6.0 11.1 17.3 20.7 23.6 23.1 19.7 15.0 7.6 3.5 12.1 COOLING DEG. DAYS(BASE 21 0C) 0.0 0.0 0.0 0.0 3.0 18.6 79.4 69.0 10.1 0.0 0.0 0.0 180.1 HEATING DEG. DAYS(BASE 18 0C) 624.0 516.0 360.6 206.9 43.3 1.8 0.0 0.1 6.7 92.3 313.1 448.0 2612.9 DEWPOINT (MEAN C) -4.8 -3.4 -0.4 4.0 5.8 5.5 11.9 10.1 5.2 3.8 -1.8 -3.3 2.7 MIXING RATIO (G/KG) 3.18 3.55 4.42 6.17 6.90 6.78 10.57 9.34 6.62 5.97 4.10 3.64 5.94 VAPOUR PRESSURE (HPA) 4.41 4.90 6.07 8.48 9.47 9.27 14.34 12.72 9.10 8.25 5.66 5.03 8.14 SATURATION DEF. (HPA) 0.89 1.37 3.40 5.12 11.47 17.45 17.11 17.79 17.46 9.57 5.25 3.13 9.17 RELATIVE HUMIDITY (MEAN %) 84 79 68 65 49 38 48 45 39 52 56 66 57 RELATIVE HUMIDITY (MAX. %) 92 90 87 88 70 61 64 63 57 73 78 82 75 RELATIVE HUMIDITY (MIN. %) 75 68 50 45 33 25 37 31 26 34 36 51 43 RELATIVE HUMIDITY (MEAN% 03UTC) 87 85 80 82 70 57 63 62 56 68 64 77 71 RELATIVE HUMIDITY (MEAN% 09UTC) 81 75 58 53 39 29 42 37 32 40 43 56 49 RELATIVE HUMIDITY (MEAN% 15UTC) 85 76 61 53 36 29 38 35 29 44 55 63 50 RH=0 => RELATIVE HUMIDITY < 0.5% AMOUNT OF PRECIPITATION MM. 80.2 64.7 124.1 53.0 7.0 4.8 0.0 2.5 0.0 34.0 28.0 37.7 436.0 DAYS WITH PRECIPITATION >=10 4 1 4 1 0 0 0 0 0 2 0 2 14 DAYS WITH PRECIPITATION >= 5 7 5 8 5 1 0 0 0 0 2 3 3 34 DAYS WITH PRECIPITATION >= 1 11 11 13 13 1 3 0 1 0 5 6 5 69 DAYS WITH PRECIPITATION 12 11 15 16 1 4 0 2 0 5 11 7 84 GREATEST DAILY PRECIPITATION 23.0 16.0 32.4 10.0 7.0 2.0 0.0 2.4 0.0 16.0 8.3 13.0 32.4 DAY 18 1 8 29 1 30 ** 4 ** 15 10 17 DAY WITH THUNDER STORM 2 0 1 1 0 0 0 0 0 0 0 0 4 DAYS WITH SNOW OR SLEET 10 9 4 0 0 0 0 0 0 0 1 5 29 DAYS WITH DUST 0 0 0 0 0 0 0 0 0 0 0 0 0 WIND DIRECTION (PREVAILING) 180 180 180 180 180 225 360 45 45 225 180 180 180 PREVAILING WIND SPEED(KNOTS) 12.7 12.5 12.4 10.2 11.9 12.3 8.8 8.2 7.1 14.1 12.6 11.1 11.7 PREVAILING WIND PERCENT 19.4 13.8 30.3 17.6 19.0 15.0 10.5 23.1 11.6 17.7 31.4 23.4 16.5 CALMS PERCENT OF WIND 68.5 71.1 48.0 60.7 54.4 65.0 73.4 47.6 61.8 65.7 41.4 56.0 59.6 NO. OF WIND OBSERVATION 248 232 244 239 248 240 248 212 173 248 239 248 2819 VECTOR WIND DIRECTION (MEAN) 194 202 198 204 206 205 21 22 204 204 200 198 201 VECTOR WIND MAGNITUDE(KNOTS) 3.0 3.0 6.1 2.3 4.3 2.3 1.3 1.6 1.2 3.7 6.5 4.4 2.8 WIND STEADINESES (MEAN %) 78.9 85.7 92.4 62.2 79.6 62.2 56.5 35.6 30.0 86.0 91.5 93.6 62.2 WIND SPEED (MEAN KNOTS) 3.8 3.5 6.6 3.7 5.4 3.7 2.3 4.5 4.0 4.3 7.1 4.7 4.5 FASTEST WIND DIRECTION 210 210 210 210 230 220 30 220 270 210 200 220 230 FASTEST WIND SPEED (KNOTS) 27 33 33 21 35 27 29 19 27 31 29 23 35 DAY 31 29 3 28 9 14 1 29 5 4 8 27 DAYS WITH SKY CLEAR (0-2)/8 6 6 16 9 26 24 30 28 30 17 17 12 221 DAYS WITH P.CLOUDY (3-6)/8 10 8 11 12 5 6 1 2 0 11 10 16 92 DAYS WITH CLOUDY (7-8)/8 15 15 4 9 0 0 0 1 0 3 3 3 53 DAYS WITH VISIBILITY =< 2 KM 7 1 0 1 0 0 0 0 0 0 0 3 12 DURATION OF SUNSHINE HOURS 71.8 108.5 233.7 184.3 351.3 326.5 367.5 331.7 304.5 219.5 201.0 172.7 2873.0 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION MAHABAD (40726) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 36 46 N LONGITUDE 45 43 E DATA PROCESSING CENTER ELEVATION 1385.0 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 867.1 865.6 860.9 864.0 863.5 860.9 859.1 860.2 864.4 867.1 866.8 865.1 863.7 MAX. QFE PRESSURE IN HPA 878.0 876.6 870.0 875.0 869.8 866.6 864.0 867.6 869.9 873.8 874.7 873.4 878.0 DAY-HOUR 9-18 6- 6 17- 6 8- 9 16- 9 12- 6 27- 6 21- 3 29- 6 16- 9 6- 6 21-18 MIN. QFE PRESSURE IN HPA 858.2 850.6 847.8 856.0 855.6 853.0 854.0 854.6 859.2 859.2 857.2 846.1 846.1 DAY-HOUR 28-12 1-12 4-12 30-21 1- 0 30-15 25-15 29-15 17-12 30-15 19-18 27- 3 MEAN QNH PRESSURE IN HPA 1023.9 1022.2 1016.8 1020.3 1019.7 1016.8 1014.7 1016.0 1020.9 1023.9 1023.6 1021.6 1020.0 MAX. QNH PRESSURE IN HPA 1036.4 1034.8 1027.2 1032.9 1027.0 1023.3 1020.3 1024.5 1027.1 1031.6 1032.6 1031.1 1036.4 DAY-HOUR 9-18 6- 6 17- 6 8- 9 16- 9 12- 6 27- 6 21- 3 29- 6 16- 9 6- 6 21-18 MIN. QNH PRESSURE IN HPA 1013.7 1005.0 1001.8 1011.2 1010.7 1007.7 1008.9 1009.6 1014.9 1014.9 1012.6 999.9 999.9 DAY-HOUR 28-12 1-12 4-12 30-21 1- 0 30-15 25-15 29-15 17-12 30-15 19-18 27- 3 MEAN QFF PRESSURE IN HPA 1029.3 1026.0 1016.8 1017.3 1012.9 1007.7 1003.8 1005.5 ****** 1018.6 1022.8 1023.4 ****** MAX. QFF PRESSURE IN HPA 1043.6 1040.7 1028.5 1032.4 1022.4 1013.9 1011.7 1015.2 ****** 1029.8 1034.2 1038.8 ****** DAY-HOUR 9- 6 6- 6 17- 3 8- 9 5- 6 27- 6 27- 3 21- 3 **-** 16- 9 23- 3 29- 3 MIN. QFF PRESSURE IN HPA 1015.7 1005.2 1001.6 1006.2 1004.3 1001.0 996.5 998.5 ****** 1008.7 1010.4 1001.9 ****** DAY-HOUR 31-21 1-12 3- 3 30-21 28- 0 30-15 15-12 1- 9 **-** 30- 0 19-18 26-18 PRESSURE AT HOUR 0000 UTC. MEAN QFE PRESSURE IN HPA 867.0 865.4 860.2 863.8 863.4 861.0 859.3 860.0 ****** 866.9 867.0 865.1 ****** MAX. QFE PRESSURE IN HPA 878.0 874.8 869.6 872.8 869.0 865.0 862.9 863.0 ****** 872.4 872.9 871.5 ****** DAY 10 6 17 9 16 13 31 6 ** 17 6 22 MIN. QFE PRESSURE IN HPA 859.0 852.5 850.3 858.2 855.6 856.5 856.0 856.2 ****** 861.2 859.0 846.9 ****** DAY 26 2 3 30 1 24 15 3 ** 30 20 27 MEAN QNH PRESSURE IN HPA 1023.8 1022.0 1016.0 1020.1 1019.7 1017.0 1014.9 1015.8 ****** 1023.7 1023.7 1021.6 ****** MAX. QNH PRESSURE IN HPA 1036.4 1032.7 1026.7 1030.4 1026.1 1021.5 1019.1 1019.2 ****** 1030.0 1030.5 1028.9 ****** DAY 10 6 17 9 16 13 31 6 ** 17 6 22 MIN. QNH PRESSURE IN HPA 1014.6 1007.2 1004.7 1013.7 1010.7 1011.8 1011.2 1011.4 ****** 1017.1 1014.6 1000.8 ****** DAY 26 2 3 30 1 24 15 3 ** 30 20 27 MEAN QFF PRESSURE IN HPA 1029.1 1025.6 1015.7 1016.8 1012.7 1007.9 1004.1 1005.0 ****** 1018.0 1022.5 1022.9 ****** MAX. QFF PRESSURE IN HPA 1042.1 1038.4 1026.5 1030.5 1021.6 1012.8 1009.9 1011.0 ****** 1026.4 1032.6 1037.3 ****** DAY 10 7 17 9 6 4 27 6 ** 17 15 29 MIN. QFF PRESSURE IN HPA 1016.0 1007.9 1003.4 1008.9 1004.3 1002.4 999.3 999.7 ****** 1008.7 1012.6 1002.0 ****** DAY 26 2 3 29 28 17 15 2 ** 30 19 27 PRESSURE AT HOUR 0300 UTC. MEAN QFE PRESSURE IN HPA 866.9 865.5 860.5 864.1 863.7 861.7 859.8 861.1 864.8 867.2 866.9 865.0 863.9 MAX. QFE PRESSURE IN HPA 878.0 875.2 869.6 872.0 869.2 865.6 863.4 867.6 869.0 871.9 873.4 871.5 878.0 DAY 10 6 17 9 16 13 27 21 29 17 6 3 MIN. QFE PRESSURE IN HPA 858.8 853.0 849.6 858.6 855.8 857.0 856.0 856.4 860.4 862.0 860.4 846.1 846.1 DAY 26 2 3 30 1 24 15 29 17 30 19 27 MEAN QNH PRESSURE IN HPA 1023.7 1022.1 1016.3 1020.5 1020.0 1017.7 1015.6 1017.0 1021.3 1024.0 1023.7 1021.5 1020.3 MAX. QNH PRESSURE IN HPA 1036.4 1033.2 1026.7 1029.5 1026.3 1022.2 1019.7 1024.5 1026.1 1029.4 1031.1 1028.9 1036.4 DAY 10 6 17 9 16 13 27 21 29 17 6 3 MIN. QNH PRESSURE IN HPA 1014.4 1007.7 1003.9 1014.2 1011.0 1012.3 1011.2 1011.6 1016.2 1018.1 1016.2 999.9 999.9 DAY 26 2 3 30 1 24 15 29 17 30 19 27 MEAN QFF PRESSURE IN HPA 1029.5 1026.2 1016.8 1018.0 1013.9 1009.2 1005.4 1007.1 1013.9 1019.6 1023.6 1024.0 1017.3 MAX. QFF PRESSURE IN HPA 1043.0 1039.0 1028.5 1030.2 1021.8 1013.9 1011.7 1015.2 1021.3 1027.2 1034.2 1038.8 1043.0 DAY 3 6 17 9 6 4 27 21 30 16 23 29 MIN. QFF PRESSURE IN HPA 1015.9 1009.0 1001.6 1010.2 1006.3 1004.5 999.1 1000.3 1007.2 1012.0 1013.0 1002.1 999.1 DAY 26 2 3 29 1 16 15 29 9 30 19 27 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION MAHABAD (40726) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 36 46 N LONGITUDE 45 43 E DATA PROCESSING CENTER ELEVATION 1385.0 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 867.8 866.5 861.4 864.9 864.1 861.8 860.1 861.4 865.4 868.3 867.7 865.9 864.6 MAX. QFE PRESSURE IN HPA 878.0 876.6 870.0 874.0 869.5 866.6 864.0 867.3 869.9 873.4 874.7 872.8 878.0 DAY 10 6 17 8 16 12 27 21 29 16 6 3 MIN. QFE PRESSURE IN HPA 859.5 854.8 850.0 859.0 856.0 857.3 856.2 856.8 860.8 861.6 860.0 847.4 847.4 DAY 26 2 4 30 1 24 15 29 17 30 28 27 MEAN QNH PRESSURE IN HPA 1024.6 1023.2 1017.3 1021.4 1020.5 1017.9 1015.9 1017.4 1022.0 1025.2 1024.6 1022.6 1021.0 MAX. QNH PRESSURE IN HPA 1036.4 1034.8 1027.2 1031.8 1026.6 1023.3 1020.3 1024.1 1027.1 1031.1 1032.6 1030.4 1036.4 DAY 10 6 17 8 16 12 27 21 29 16 6 3 MIN. QNH PRESSURE IN HPA 1015.2 1009.8 1004.3 1014.6 1011.2 1012.7 1011.4 1012.1 1016.7 1017.6 1015.8 1001.3 1001.3 DAY 26 2 4 30 1 24 15 29 17 30 28 27 MEAN QFF PRESSURE IN HPA 1030.4 1027.3 1017.4 1018.7 1013.5 1008.6 1005.0 1006.5 ****** 1020.0 1024.0 1024.8 ****** MAX. QFF PRESSURE IN HPA 1043.6 1040.7 1027.8 1031.7 1022.4 1013.9 1011.2 1011.7 ****** 1029.8 1033.8 1038.4 ****** DAY 9 6 17 9 5 27 27 5 ** 16 15 29 MIN. QFF PRESSURE IN HPA 1016.8 1010.6 1003.7 1010.6 1006.0 1002.3 998.4 999.5 ****** 1011.4 1014.5 1004.2 ****** DAY 26 2 3 30 1 15 15 1 ** 30 19 27 PRESSURE AT HOUR 0900 UTC. MEAN QFE PRESSURE IN HPA 867.4 866.3 861.3 864.5 863.6 861.1 859.4 860.6 864.4 867.4 866.9 865.3 864.0 MAX. QFE PRESSURE IN HPA 878.0 876.0 869.0 875.0 869.8 866.0 863.0 866.5 869.1 873.8 873.7 872.8 878.0 DAY 10 6 16 8 16 12 27 21 30 16 6 21 MIN. QFE PRESSURE IN HPA 859.3 854.0 849.0 858.8 856.0 856.2 855.7 856.5 860.2 861.6 859.5 849.0 849.0 DAY 26 1 4 20 1 30 15 29 17 30 28 26 MEAN QNH PRESSURE IN HPA 1024.3 1022.9 1017.2 1020.9 1019.9 1017.0 1015.1 1016.5 1020.8 1024.2 1023.7 1021.8 1020.4 MAX. QNH PRESSURE IN HPA 1036.4 1034.1 1026.1 1032.9 1027.0 1022.6 1019.2 1023.2 1026.2 1031.6 1031.4 1030.4 1036.4 DAY 10 6 16 8 16 12 27 21 30 16 6 21 MIN. QNH PRESSURE IN HPA 1015.0 1008.9 1003.2 1014.4 1011.2 1011.4 1010.8 1011.8 1016.0 1017.6 1015.2 1003.2 1003.2 DAY 26 1 4 20 1 30 15 29 17 30 28 26 MEAN QFF PRESSURE IN HPA 1029.5 1026.6 1016.8 1017.4 1012.6 1007.5 1003.8 1005.3 ****** 1018.3 1022.4 1023.0 ****** MAX. QFF PRESSURE IN HPA 1043.4 1039.9 1026.0 1032.4 1022.4 1013.1 1010.1 1011.4 ****** 1029.8 1030.5 1036.4 ****** DAY 9 6 16 8 5 26 27 5 ** 16 15 29 MIN. QFF PRESSURE IN HPA 1016.1 1009.3 1004.5 1008.2 1005.3 1001.8 998.0 998.5 ****** 1012.1 1013.9 1003.6 ****** DAY 26 1 4 20 9 16 15 1 ** 30 28 26 PRESSURE AT HOUR 1200 UTC. MEAN QFE PRESSURE IN HPA 866.4 864.8 860.4 863.3 862.7 860.1 858.2 859.4 863.1 866.2 866.0 864.3 862.9 MAX. QFE PRESSURE IN HPA 877.0 875.4 868.0 873.6 868.7 865.3 861.0 864.6 867.0 872.4 871.8 872.6 877.0 DAY 9 6 16 8 16 12 30 21 29 16 6 21 MIN. QFE PRESSURE IN HPA 858.2 850.6 847.8 857.8 856.0 854.7 854.4 855.3 859.2 859.7 859.6 848.5 847.8 DAY 28 1 4 20 1 30 15 29 17 30 19 26 MEAN QNH PRESSURE IN HPA 1023.1 1021.3 1016.2 1019.5 1018.8 1015.9 1013.7 1015.0 1019.3 1022.9 1022.6 1020.7 1019.1 MAX. QNH PRESSURE IN HPA 1035.2 1033.4 1024.9 1031.3 1025.7 1021.8 1016.9 1021.0 1023.8 1030.0 1029.3 1030.2 1035.2 DAY 9 6 16 8 16 12 30 21 29 16 6 21 MIN. QNH PRESSURE IN HPA 1013.7 1005.0 1001.8 1013.2 1011.2 1009.7 1009.4 1010.4 1014.9 1015.4 1015.3 1002.6 1001.8 DAY 28 1 4 20 1 30 15 29 17 30 19 26 MEAN QFF PRESSURE IN HPA 1028.3 1024.8 1016.0 1016.1 1011.7 1006.7 1002.5 1004.2 ****** 1017.2 1021.4 1022.0 ****** MAX. QFF PRESSURE IN HPA 1041.9 1038.9 1025.1 1031.0 1021.2 1012.8 1006.9 1010.4 ****** 1027.4 1030.8 1035.8 ****** DAY 9 6 16 8 5 26 27 20 ** 16 14 29 MIN. QFF PRESSURE IN HPA 1015.8 1005.2 1003.1 1007.6 1004.9 1001.4 996.5 999.3 ****** 1008.9 1013.1 1002.5 ****** DAY 28 1 4 20 27 30 15 11 ** 30 19 26 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION MAHABAD (40726) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 36 46 N LONGITUDE 45 43 E DATA PROCESSING CENTER ELEVATION 1385.0 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 866.8 865.2 861.1 863.3 862.7 859.9 857.8 859.1 863.1 866.6 866.5 864.8 863.1 MAX. QFE PRESSURE IN HPA 877.4 875.0 869.0 873.0 868.2 865.0 861.0 864.4 867.6 872.8 872.7 873.1 877.4 DAY 9 6 16 8 16 12 30 21 30 16 6 21 MIN. QFE PRESSURE IN HPA 859.0 851.0 847.8 857.0 856.8 853.0 854.0 854.6 859.2 859.2 857.8 849.0 847.8 DAY 28 1 4 30 1 30 25 29 17 30 19 26 MEAN QNH PRESSURE IN HPA 1023.6 1021.7 1017.0 1019.5 1018.9 1015.6 1013.2 1014.7 1019.3 1023.3 1023.2 1021.3 1019.3 MAX. QNH PRESSURE IN HPA 1035.7 1032.9 1026.1 1030.6 1025.2 1021.5 1016.9 1020.8 1024.5 1030.4 1030.3 1030.8 1035.7 DAY 9 6 16 8 16 12 30 21 30 16 6 21 MIN. QNH PRESSURE IN HPA 1014.6 1005.5 1001.8 1012.3 1012.1 1007.7 1008.9 1009.6 1014.9 1014.9 1013.2 1003.2 1001.8 DAY 28 1 4 30 1 30 25 29 17 30 19 26 MEAN QFF PRESSURE IN HPA 1029.2 1025.7 1017.5 1016.9 1012.6 1007.1 1002.7 1004.9 1011.8 1018.9 1023.2 1023.9 1016.2 MAX. QFF PRESSURE IN HPA 1042.5 1038.9 1027.0 1030.7 1021.0 1012.9 1008.1 1011.6 1019.4 1028.2 1032.7 1037.4 1042.5 DAY 3 6 16 8 5 26 27 21 30 16 22 29 MIN. QFF PRESSURE IN HPA 1016.7 1005.5 1002.8 1008.1 1004.9 1001.0 998.1 998.8 1006.0 1010.8 1010.9 1004.2 998.1 DAY 31 1 4 17 27 30 25 29 8 30 19 26 PRESSURE AT HOUR 1800 UTC. MEAN QFE PRESSURE IN HPA 867.2 865.7 861.2 864.1 863.7 860.8 858.8 859.9 ****** 867.2 866.9 865.3 ****** MAX. QFE PRESSURE IN HPA 878.0 875.8 869.4 873.6 869.0 865.0 862.0 864.2 ****** 873.6 873.0 873.4 ****** DAY 9 6 16 8 16 12 30 5 ** 16 5 21 MIN. QFE PRESSURE IN HPA 859.8 852.0 849.0 857.6 859.2 855.0 855.7 856.0 ****** 861.9 857.2 847.0 ****** DAY 28 1 4 30 27 30 8 3 ** 30 19 26 MEAN QNH PRESSURE IN HPA 1024.1 1022.3 1017.2 1020.5 1020.0 1016.6 1014.4 1015.6 ****** 1024.0 1023.7 1021.8 ****** MAX. QNH PRESSURE IN HPA 1036.4 1033.8 1026.5 1031.3 1026.1 1021.5 1018.1 1020.6 ****** 1031.3 1030.6 1031.1 ****** DAY 9 6 16 8 16 12 30 5 ** 16 5 21 MIN. QNH PRESSURE IN HPA 1015.5 1006.6 1003.2 1013.0 1014.9 1010.0 1010.8 1011.2 ****** 1017.9 1012.6 1000.9 ****** DAY 28 1 4 30 27 30 8 3 ** 30 19 26 MEAN QFF PRESSURE IN HPA 1029.7 1026.4 1017.3 1017.4 1013.1 1007.4 1003.3 1005.1 ****** 1018.8 1023.0 1024.0 ****** MAX. QFF PRESSURE IN HPA 1043.0 1040.0 1027.0 1031.5 1021.1 1012.8 1007.8 1012.3 ****** 1029.0 1033.3 1038.4 ****** DAY 2 6 16 8 5 26 27 5 ** 16 22 29 MIN. QFF PRESSURE IN HPA 1016.4 1006.3 1004.4 1008.0 1006.4 1002.0 999.2 999.8 ****** 1013.3 1010.4 1001.9 ****** DAY 31 29 4 30 24 30 15 1 ** 12 19 26 PRESSURE AT HOUR 2100 UTC. MEAN QFE PRESSURE IN HPA 867.2 865.5 861.1 864.1 863.9 861.2 859.2 860.3 ****** 867.2 867.0 865.2 ****** MAX. QFE PRESSURE IN HPA 878.0 875.0 869.9 873.4 869.0 865.7 862.6 864.2 ****** 873.6 873.1 872.3 ****** DAY 9 6 16 8 15 12 26 5 ** 16 5 21 MIN. QFE PRESSURE IN HPA 859.4 853.0 850.8 856.0 859.0 856.2 856.5 855.8 ****** 862.2 857.6 846.9 ****** DAY 31 1 8 30 24 30 8 2 ** 29 19 26 MEAN QNH PRESSURE IN HPA 1024.0 1022.1 1017.0 1020.4 1020.3 1017.1 1014.9 1016.1 ****** 1024.0 1023.7 1021.7 ****** MAX. QNH PRESSURE IN HPA 1036.4 1032.9 1027.1 1031.1 1026.1 1022.3 1018.7 1020.6 ****** 1031.3 1030.8 1029.8 ****** DAY 9 6 16 8 15 12 26 5 ** 16 5 21 MIN. QNH PRESSURE IN HPA 1015.1 1007.7 1005.2 1011.2 1014.6 1011.4 1011.8 1011.0 ****** 1018.3 1013.0 1000.8 ****** DAY 31 1 8 30 24 30 8 2 ** 29 19 26 MEAN QFF PRESSURE IN HPA 1029.2 1025.7 1016.7 1016.9 1013.0 1007.7 1003.7 1005.3 ****** 1018.1 1022.5 1023.0 ****** MAX. QFF PRESSURE IN HPA 1042.6 1039.5 1027.0 1031.3 1021.7 1012.6 1009.5 1012.1 ****** 1028.3 1032.7 1036.6 ****** DAY 3 6 16 8 5 26 26 5 ** 16 14 28 MIN. QFF PRESSURE IN HPA 1015.7 1006.2 1005.4 1006.2 1005.1 1003.1 999.3 999.8 ****** 1011.4 1012.1 1002.1 ****** DAY 31 29 2 30 27 30 15 1 ** 29 19 26 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION MAHABAD (40726) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 36 46 N LONGITUDE 45 43 E DATA PROCESSING CENTER ELEVATION 1385.0 M MEANS AND EXTREMES FOR THE YEAR 1989 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AIR TEMPERATURE (C) -6.5 -7.7 6.2 14.6 17.9 23.4 27.1 25.5 20.8 15.7 8.7 3.2 12.4 MINIMUN AIR TEMPERATURE (C) -10.2 -12.4 2.0 7.3 9.7 13.0 17.7 16.0 11.6 9.7 5.1 -0.7 5.7 DAYS WITH MINIMUM TEMP. >=21 0 0 0 0 0 0 2 1 0 0 0 0 3 DAYS WITH MINIMUM TEMP. <=-4 26 26 0 0 0 0 0 0 0 0 1 2 55 DAYS WITH FREEZING MIN.<= 0 31 27 9 0 0 0 0 0 0 0 1 20 88 TEMPERATURE RECORDS LOWEST(C) -18.0 -19.2 -2.8 2.6 4.8 9.8 12.4 12.8 5.2 1.6 -4.4 -7.4 -19.2 DAY 15 16 30 2 12 2 2 30 23 25 22 5 MAXIMUM AIR TEMPERATURE (C) -2.0 -2.2 11.1 21.6 25.0 31.4 34.9 33.7 29.0 22.2 13.4 8.1 18.9 DAYS WITH MAXIMUM TEMP. >=30 0 0 0 0 5 20 31 27 13 2 0 0 98 DAYS WITH MAXIMUM TEMP. <= 0 21 22 0 0 0 0 0 0 0 0 0 0 43 TEMPERATURE RECORDS HIGHEST(C) 5.0 9.4 18.4 25.2 31.6 37.4 40.8 37.4 36.8 30.0 18.2 11.6 40.8 DAY 19 28 24 17 26 29 21 14 2 5 28 1 DIF. BETWEEN (MAX.-MIN.) (C) 8.2 10.2 9.1 14.3 15.3 18.4 17.2 17.7 17.4 12.5 8.3 8.8 13.2 MEAN DAILY TEMP. (MDT) (C) -6.1 -7.3 6.6 14.4 17.4 22.2 26.3 24.8 20.3 16.0 9.2 3.7 12.3 COOLING DEG. DAYS(BASE 21 0C) 0.0 0.0 0.0 0.0 4.9 44.8 165.1 119.3 37.0 8.2 0.0 0.0 379.3 HEATING DEG. DAYS(BASE 18 0C) 724.8 708.0 354.9 107.0 50.8 0.0 0.0 0.0 22.4 97.5 262.8 444.1 2772.3 DEWPOINT (MEAN C) -10.1 -11.1 0.1 3.1 3.4 2.3 7.8 5.5 1.7 2.5 2.3 -2.7 0.4 MIXING RATIO (G/KG) 2.15 2.02 4.56 5.66 5.78 5.44 8.10 7.08 5.18 5.48 5.41 3.71 5.05 VAPOUR PRESSURE (HPA) 2.98 2.81 6.28 7.81 7.96 7.47 11.05 9.68 7.13 7.57 7.48 5.14 6.95 SATURATION DEF. (HPA) 0.96 0.93 3.51 9.60 13.81 22.95 26.57 24.75 19.31 11.50 4.07 2.75 11.73 RELATIVE HUMIDITY (MEAN %) 77 79 69 49 42 28 33 32 33 48 67 68 52 RELATIVE HUMIDITY (MAX. %) 87 89 88 70 65 46 52 51 53 67 81 83 69 RELATIVE HUMIDITY (MIN. %) 63 64 49 32 25 15 19 17 19 30 47 50 36 RELATIVE HUMIDITY (MEAN% 03UTC) 82 83 85 69 61 45 50 49 51 62 76 76 66 RELATIVE HUMIDITY (MEAN% 09UTC) 70 70 55 38 31 20 25 25 24 35 54 55 42 RELATIVE HUMIDITY (MEAN% 15UTC) 76 77 58 36 27 17 21 20 23 41 64 63 44 RH=0 => RELATIVE HUMIDITY < 0.5% AMOUNT OF PRECIPITATION MM. 43.5 21.0 84.5 18.5 7.3 0.1 0.0 0.0 2.8 58.6 69.1 24.7 330.1 DAYS WITH PRECIPITATION >=10 1 0 2 1 0 0 0 0 0 2 3 2 11 DAYS WITH PRECIPITATION >= 5 5 2 7 1 1 0 0 0 0 3 3 2 24 DAYS WITH PRECIPITATION >= 1 9 5 11 3 1 0 0 0 1 5 6 3 44 DAYS WITH PRECIPITATION 13 12 15 5 4 1 0 0 1 7 8 4 70 GREATEST DAILY PRECIPITATION 10.0 8.0 22.0 15.0 6.0 0.1 0.0 0.0 2.8 26.0 24.3 10.0 26.0 DAY 11 13 10 10 6 12 ** ** 19 30 11 1 DAY WITH THUNDER STORM 0 0 1 4 2 0 0 0 1 4 1 0 13 DAYS WITH SNOW OR SLEET 13 12 3 0 0 0 0 0 0 0 0 2 30 DAYS WITH DUST 0 0 0 0 2 0 0 0 0 3 0 0 5 WIND DIRECTION (PREVAILING) 45 360 180 180 225 225 45 45 180 225 180 180 225 PREVAILING WIND SPEED(KNOTS) 6.2 8.3 12.1 10.8 12.1 11.9 6.5 8.0 11.2 14.7 12.5 10.7 12.6 PREVAILING WIND PERCENT 5.2 3.1 11.7 10.8 17.3 13.8 13.3 10.5 12.5 25.0 27.1 21.0 11.9 CALMS PERCENT OF WIND 80.6 91.1 70.2 68.3 59.3 62.5 67.3 68.5 62.1 52.8 49.2 57.7 65.7 NO. OF WIND OBSERVATION 248 224 248 240 248 240 248 248 240 248 240 248 2920 VECTOR WIND DIRECTION (MEAN) 207 240 198 197 204 214 81 278 203 206 198 197 202 VECTOR WIND MAGNITUDE(KNOTS) 0.6 0.2 2.1 1.6 2.6 1.9 0.3 0.2 2.1 4.6 5.5 3.9 2.1 WIND STEADINESES (MEAN %) 30.0 22.2 63.6 53.3 57.8 52.8 10.7 6.7 53.8 79.3 90.2 86.7 58.3 WIND SPEED (MEAN KNOTS) 2.0 0.9 3.3 3.0 4.5 3.6 2.8 3.0 3.9 5.8 6.1 4.5 3.6 FASTEST WIND DIRECTION 220 210 210 240 240 210 210 210 220 210 220 210 210 FASTEST WIND SPEED (KNOTS) 27 16 21 27 23 19 19 23 23 29 27 31 31 DAY 1 27 26 15 27 23 7 1 17 3 18 1 DAYS WITH SKY CLEAR (0-2)/8 17 15 10 17 21 29 29 31 29 24 14 18 254 DAYS WITH P.CLOUDY (3-6)/8 4 8 12 12 10 1 2 0 1 5 10 10 75 DAYS WITH CLOUDY (7-8)/8 10 5 9 1 0 0 0 0 0 2 6 3 36 DAYS WITH VISIBILITY =< 2 KM 5 6 0 0 0 0 0 0 0 0 0 1 12 DURATION OF SUNSHINE HOURS 123.5 126.8 167.9 262.8 338.6 334.0 364.0 341.4 301.3 230.9 171.0 ****** ****** ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION MAHABAD (40726) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 36 46 N LONGITUDE 45 43 E DATA PROCESSING CENTER ELEVATION 1385.0 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 867.0 869.2 862.9 866.3 865.2 861.7 860.6 861.3 863.9 867.4 867.3 866.0 864.9 MAX. QFE PRESSURE IN HPA 873.2 877.8 869.2 871.2 870.3 866.6 865.8 867.9 872.6 874.2 872.3 872.6 877.8 DAY-HOUR 21-21 8- 6 7- 6 9- 6 14-18 13- 6 9- 6 19- 6 23- 6 27- 6 3- 6 18- 6 MIN. QFE PRESSURE IN HPA 858.7 859.6 850.0 860.9 858.8 856.0 854.0 853.1 857.3 861.2 860.9 860.2 850.0 DAY-HOUR 3- 3 1- 3 29- 6 13-12 6-15 9-15 31-15 1-15 13-12 12-12 19-12 12-21 MEAN QNH PRESSURE IN HPA 1023.7 1026.3 1019.1 1023.0 1021.7 1017.8 1016.5 1017.2 1020.3 1024.2 1024.1 1022.6 1021.4 MAX. QNH PRESSURE IN HPA 1030.9 1036.1 1026.3 1028.6 1027.6 1023.3 1022.4 1024.8 1030.2 1032.0 1029.8 1030.2 1036.1 DAY-HOUR 21-21 8- 6 7- 6 9- 6 14-18 13- 6 9- 6 19- 6 23- 6 27- 6 3- 6 18- 6 MIN. QNH PRESSURE IN HPA 1014.3 1015.3 1004.3 1016.8 1014.4 1011.2 1008.9 1007.9 1012.7 1017.1 1016.8 1016.0 1004.3 DAY-HOUR 3- 3 1- 3 29- 6 13-12 6-15 9-15 31-15 1-15 13-12 12-12 19-12 12-21 MEAN QFF PRESSURE IN HPA 1031.9 1035.5 1018.9 1018.0 1014.7 1007.8 1004.3 1006.0 1011.7 1018.6 1022.4 1024.4 1017.8 MAX. QFF PRESSURE IN HPA 1041.4 1049.1 1027.5 1026.5 1022.2 1015.2 1011.0 1015.5 1026.2 1030.4 1033.7 1033.2 1049.1 DAY-HOUR 15- 9 8- 6 11-18 2- 3 14- 3 13- 3 10- 6 19- 6 23- 3 24- 6 22- 6 18- 6 MIN. QFF PRESSURE IN HPA 1018.4 1022.9 1004.5 1010.3 1005.1 1000.0 996.5 994.8 1002.7 1008.0 1015.0 1014.8 994.8 DAY-HOUR 2-12 23- 3 29- 3 15- 9 30-21 8-21 31-21 1-12 13-12 7- 0 15-12 12-21 PRESSURE AT HOUR 0000 UTC. MEAN QFE PRESSURE IN HPA 867.0 868.9 862.7 866.4 865.3 861.9 860.8 861.4 864.1 867.4 867.3 866.0 864.9 MAX. QFE PRESSURE IN HPA 872.4 876.2 867.7 870.8 868.9 865.3 864.3 866.6 871.3 873.0 871.6 871.1 876.2 DAY 22 4 6 10 14 13 10 19 23 27 3 19 MIN. QFE PRESSURE IN HPA 859.3 860.3 851.0 862.0 859.0 856.7 856.4 855.1 858.3 861.7 861.7 860.6 851.0 DAY 3 23 29 14 7 9 6 1 13 2 15 13 MEAN QNH PRESSURE IN HPA 1023.7 1026.0 1018.9 1023.1 1021.9 1018.0 1016.7 1017.4 1020.4 1024.2 1024.1 1022.6 1021.4 MAX. QNH PRESSURE IN HPA 1030.0 1034.3 1024.6 1028.1 1025.9 1021.8 1020.7 1023.3 1028.7 1030.6 1029.0 1028.5 1034.3 DAY 22 4 6 10 14 13 10 19 23 27 3 19 MIN. QNH PRESSURE IN HPA 1015.0 1016.1 1005.5 1018.1 1014.6 1012.0 1011.6 1010.2 1013.8 1017.7 1017.7 1016.5 1005.5 DAY 3 23 29 14 7 9 6 1 13 2 15 13 MEAN QFF PRESSURE IN HPA 1031.3 1034.9 1018.2 1017.9 1014.9 1008.2 1004.5 1005.9 1011.5 1018.0 1022.0 1023.9 1017.6 MAX. QFF PRESSURE IN HPA 1040.2 1046.2 1026.2 1024.2 1020.9 1013.7 1008.9 1013.5 1024.6 1028.6 1031.8 1030.2 1046.2 DAY 31 4 12 2 14 13 9 19 23 24 22 18 MIN. QFF PRESSURE IN HPA 1018.9 1023.9 1004.8 1011.1 1007.1 1001.3 998.6 996.7 1003.6 1008.0 1015.7 1016.1 996.7 DAY 3 23 29 18 31 9 6 1 13 7 15 13 PRESSURE AT HOUR 0300 UTC. MEAN QFE PRESSURE IN HPA 866.7 869.0 862.9 866.9 865.8 862.6 861.7 862.2 864.6 867.6 867.3 866.0 865.3 MAX. QFE PRESSURE IN HPA 871.8 876.6 868.0 870.9 869.6 866.3 865.2 867.4 871.7 873.3 871.6 871.7 876.6 DAY 22 8 7 9 14 13 9 19 22 27 3 18 MIN. QFE PRESSURE IN HPA 858.7 859.6 850.4 862.4 859.0 857.6 857.2 855.3 859.0 862.1 861.7 860.8 850.4 DAY 3 1 29 13 7 9 6 1 13 2 15 13 MEAN QNH PRESSURE IN HPA 1023.4 1026.1 1019.1 1023.6 1022.4 1018.8 1017.7 1018.2 1021.0 1024.4 1024.1 1022.6 1021.8 MAX. QNH PRESSURE IN HPA 1029.3 1034.8 1024.9 1028.2 1026.7 1023.0 1021.7 1024.2 1029.2 1031.0 1029.0 1029.2 1034.8 DAY 22 8 7 9 14 13 9 19 22 27 3 18 MIN. QNH PRESSURE IN HPA 1014.3 1015.3 1004.8 1018.5 1014.6 1013.0 1012.6 1010.4 1014.6 1018.2 1017.7 1016.7 1004.8 DAY 3 1 29 13 7 9 6 1 13 2 15 13 MEAN QFF PRESSURE IN HPA 1032.0 1036.0 1019.2 1019.4 1015.9 1009.5 1006.0 1007.7 1013.4 1019.5 1023.0 1024.9 1018.9 MAX. QFF PRESSURE IN HPA 1041.0 1047.4 1027.2 1026.5 1022.2 1015.2 1010.8 1015.4 1026.2 1029.4 1033.2 1032.8 1047.4 DAY 31 4 12 2 14 13 9 19 23 24 22 18 MIN. QFF PRESSURE IN HPA 1019.1 1022.9 1004.5 1013.2 1008.1 1003.1 1000.1 997.9 1006.1 1010.1 1015.6 1016.6 997.9 DAY 3 23 29 13 27 9 6 1 13 2 15 13 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION MAHABAD (40726) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 36 46 N LONGITUDE 45 43 E DATA PROCESSING CENTER ELEVATION 1385.0 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 867.6 869.9 863.7 867.4 866.0 862.8 862.1 862.6 865.2 868.3 868.3 866.8 865.9 MAX. QFE PRESSURE IN HPA 872.9 877.8 869.2 871.2 869.9 866.6 865.8 867.9 872.6 874.2 872.3 872.6 877.8 DAY 30 8 7 9 14 13 9 19 23 27 3 18 MIN. QFE PRESSURE IN HPA 860.9 861.1 850.0 862.4 859.8 857.2 857.5 855.0 859.9 863.0 863.2 862.7 850.0 DAY 3 23 29 13 7 9 5 1 13 2 19 12 MEAN QNH PRESSURE IN HPA 1024.5 1027.1 1020.0 1024.2 1022.7 1019.0 1018.2 1018.7 1021.7 1025.3 1025.2 1023.6 1022.5 MAX. QNH PRESSURE IN HPA 1030.5 1036.1 1026.3 1028.6 1027.1 1023.3 1022.4 1024.8 1030.2 1032.0 1029.8 1030.2 1036.1 DAY 30 8 7 9 14 13 9 19 23 27 3 18 MIN. QNH PRESSURE IN HPA 1016.8 1017.0 1004.3 1018.5 1015.5 1012.6 1012.9 1010.0 1015.6 1019.2 1019.4 1018.9 1004.3 DAY 3 23 29 13 7 9 5 1 13 2 19 12 MEAN QFF PRESSURE IN HPA 1033.1 1036.8 1020.0 1019.3 1015.5 1008.7 1005.9 1007.2 1013.0 1019.7 1023.9 1025.9 1019.1 MAX. QFF PRESSURE IN HPA 1041.4 1049.1 1027.5 1025.7 1021.0 1014.4 1011.0 1015.5 1025.9 1030.4 1033.7 1033.2 1049.1 DAY 15 8 12 2 14 13 10 19 22 24 22 18 MIN. QFF PRESSURE IN HPA 1022.0 1024.7 1005.1 1012.6 1008.7 1001.4 1000.2 996.6 1005.5 1010.5 1016.4 1017.2 996.6 DAY 3 23 29 29 31 9 5 1 13 7 30 1 PRESSURE AT HOUR 0900 UTC. MEAN QFE PRESSURE IN HPA 867.5 869.8 863.4 866.6 865.5 862.0 861.2 861.6 864.1 867.4 867.5 866.1 865.2 MAX. QFE PRESSURE IN HPA 872.6 877.0 868.6 870.5 869.6 865.4 864.8 866.2 871.7 872.4 871.7 872.4 877.0 DAY 22 8 6 9 20 13 9 19 22 22 3 18 MIN. QFE PRESSURE IN HPA 861.4 861.7 850.6 861.3 860.3 856.5 856.0 854.1 858.4 862.3 862.4 861.1 850.6 DAY 2 23 29 13 7 9 5 1 13 30 18 12 MEAN QNH PRESSURE IN HPA 1024.3 1027.0 1019.7 1023.4 1022.0 1018.0 1017.1 1017.6 1020.4 1024.2 1024.3 1022.7 1021.7 MAX. QNH PRESSURE IN HPA 1030.2 1035.2 1025.6 1027.8 1026.7 1021.9 1021.3 1022.9 1029.2 1030.0 1029.2 1030.0 1035.2 DAY 22 8 6 9 20 13 9 19 22 22 3 18 MIN. QNH PRESSURE IN HPA 1017.4 1017.7 1005.0 1017.3 1016.1 1011.8 1011.2 1009.0 1013.9 1018.4 1018.5 1017.0 1005.0 DAY 2 23 29 13 7 9 5 1 13 30 18 12 MEAN QFF PRESSURE IN HPA 1032.0 1035.7 1019.2 1017.6 1014.8 1007.6 1004.6 1005.8 1011.4 1018.0 1022.2 1024.1 1017.7 MAX. QFF PRESSURE IN HPA 1041.4 1046.8 1027.2 1023.6 1020.7 1012.5 1010.5 1013.1 1024.5 1028.4 1030.4 1031.9 1046.8 DAY 15 8 12 2 20 4 10 19 22 24 22 18 MIN. QFF PRESSURE IN HPA 1021.9 1024.7 1005.7 1010.3 1007.7 1000.5 998.4 994.8 1003.8 1010.2 1015.6 1015.5 994.8 DAY 2 23 29 15 31 9 5 1 13 2 30 12 PRESSURE AT HOUR 1200 UTC. MEAN QFE PRESSURE IN HPA 866.3 868.5 862.2 865.3 864.2 860.8 859.7 860.1 862.7 866.3 866.5 865.1 864.0 MAX. QFE PRESSURE IN HPA 871.3 875.2 867.5 869.6 867.8 864.6 863.5 864.9 870.4 871.1 870.7 871.2 875.2 DAY 30 8 12 9 20 3 10 19 22 22 3 18 MIN. QFE PRESSURE IN HPA 859.0 860.8 852.0 860.9 859.0 856.1 855.0 853.3 857.3 861.2 860.9 860.4 852.0 DAY 2 1 29 13 6 9 5 1 13 12 19 12 MEAN QNH PRESSURE IN HPA 1022.9 1025.5 1018.3 1021.8 1020.5 1016.7 1015.4 1015.9 1018.9 1023.0 1023.2 1021.7 1020.3 MAX. QNH PRESSURE IN HPA 1028.7 1033.2 1024.3 1026.7 1024.7 1021.0 1019.8 1021.4 1027.7 1028.5 1028.0 1028.6 1033.2 DAY 30 8 12 9 20 3 10 19 22 22 3 18 MIN. QNH PRESSURE IN HPA 1014.6 1016.7 1006.6 1016.8 1014.6 1011.3 1010.0 1008.1 1012.7 1017.1 1016.8 1016.2 1006.6 DAY 2 1 29 13 6 9 5 1 13 12 19 12 MEAN QFF PRESSURE IN HPA 1030.4 1034.2 1017.6 1016.4 1013.5 1006.7 1003.2 1004.5 1010.0 1016.9 1021.1 1022.9 1016.5 MAX. QFF PRESSURE IN HPA 1038.6 1043.7 1025.0 1021.9 1020.0 1012.7 1008.6 1011.6 1022.5 1026.5 1028.9 1030.0 1043.7 DAY 15 5 12 1 13 3 10 19 22 24 22 18 MIN. QFF PRESSURE IN HPA 1018.4 1024.4 1006.1 1010.9 1006.9 1001.2 997.9 994.8 1002.7 1008.9 1015.0 1015.5 994.8 DAY 2 13 28 13 6 30 5 1 13 2 15 12 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION MAHABAD (40726) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 36 46 N LONGITUDE 45 43 E DATA PROCESSING CENTER ELEVATION 1385.0 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 866.6 868.8 862.2 865.3 863.9 860.5 859.0 859.7 862.8 866.9 866.9 865.8 864.0 MAX. QFE PRESSURE IN HPA 872.2 875.4 867.4 869.2 868.0 864.3 863.0 864.3 870.5 871.8 870.8 871.9 875.4 DAY 30 8 6 9 14 3 9 19 22 27 3 18 MIN. QFE PRESSURE IN HPA 858.8 861.7 852.9 861.2 858.8 856.0 854.0 853.1 857.7 861.4 860.9 861.0 852.9 DAY 2 1 28 13 6 9 31 1 13 2 19 12 MEAN QNH PRESSURE IN HPA 1023.3 1025.8 1018.3 1021.9 1020.3 1016.3 1014.6 1015.5 1018.9 1023.7 1023.6 1022.4 1020.4 MAX. QNH PRESSURE IN HPA 1029.7 1033.4 1024.2 1026.3 1024.9 1020.7 1019.2 1020.7 1027.8 1029.3 1028.1 1029.4 1033.4 DAY 30 8 6 9 14 3 9 19 22 27 3 18 MIN. QNH PRESSURE IN HPA 1014.4 1017.7 1007.6 1017.1 1014.4 1011.2 1008.9 1007.9 1013.1 1017.4 1016.8 1016.9 1007.6 DAY 2 1 28 13 6 9 31 1 13 2 19 12 MEAN QFF PRESSURE IN HPA 1031.9 1035.5 1018.5 1017.4 1013.8 1006.9 1002.9 1005.0 1011.4 1018.9 1022.4 1024.6 1017.4 MAX. QFF PRESSURE IN HPA 1038.9 1045.6 1026.6 1022.7 1020.0 1012.1 1008.2 1011.6 1024.1 1027.5 1030.4 1032.4 1045.6 DAY 15 5 11 1 14 3 9 19 22 24 21 18 MIN. QFF PRESSURE IN HPA 1018.9 1025.3 1006.4 1012.3 1006.5 1001.7 997.4 996.0 1004.7 1009.4 1016.1 1016.0 996.0 DAY 2 13 28 12 30 30 5 1 8 2 19 12 PRESSURE AT HOUR 1800 UTC. MEAN QFE PRESSURE IN HPA 867.2 869.3 863.2 866.5 865.2 861.6 860.0 861.3 864.0 867.8 867.4 866.2 865.0 MAX. QFE PRESSURE IN HPA 872.9 876.2 868.0 870.7 870.3 865.2 864.1 865.4 871.1 872.5 871.8 872.1 876.2 DAY 30 3 6 8 14 3 9 18 22 27 21 18 MIN. QFE PRESSURE IN HPA 859.5 861.9 853.6 862.4 860.1 856.7 854.9 854.5 859.2 863.0 861.9 861.2 853.6 DAY 2 22 28 13 6 8 31 1 13 6 19 31 MEAN QNH PRESSURE IN HPA 1024.0 1026.4 1019.4 1023.2 1021.8 1017.6 1015.7 1017.2 1020.3 1024.7 1024.2 1022.9 1021.4 MAX. QNH PRESSURE IN HPA 1030.5 1034.3 1024.9 1028.0 1027.6 1021.7 1020.5 1021.9 1028.5 1030.1 1029.3 1029.6 1034.3 DAY 30 3 6 8 14 3 9 18 22 27 21 18 MIN. QNH PRESSURE IN HPA 1015.2 1017.9 1008.4 1018.5 1015.9 1012.0 1009.9 1009.5 1014.9 1019.2 1017.9 1017.1 1008.4 DAY 2 22 28 13 6 8 31 1 13 6 19 31 MEAN QFF PRESSURE IN HPA 1032.6 1035.9 1019.5 1018.3 1014.6 1007.3 1003.4 1005.8 1011.7 1019.2 1022.9 1025.2 1018.0 MAX. QFF PRESSURE IN HPA 1040.6 1047.2 1027.5 1024.0 1021.3 1012.6 1008.5 1012.8 1024.1 1027.9 1032.3 1032.7 1047.2 DAY 30 5 11 1 14 12 9 19 22 24 21 18 MIN. QFF PRESSURE IN HPA 1019.6 1025.5 1008.1 1012.9 1005.3 1001.0 997.3 997.0 1005.3 1009.8 1016.6 1016.6 997.0 DAY 2 22 28 12 30 8 31 1 13 6 19 12 PRESSURE AT HOUR 2100 UTC. MEAN QFE PRESSURE IN HPA 867.2 869.4 863.1 866.5 865.4 861.8 860.5 861.6 864.1 867.7 867.3 866.1 865.1 MAX. QFE PRESSURE IN HPA 873.2 876.2 868.0 870.7 869.1 865.4 864.3 866.2 871.3 873.1 871.8 871.9 876.2 DAY 21 3 6 8 14 3 9 18 22 26 21 18 MIN. QFE PRESSURE IN HPA 859.8 861.5 853.3 862.0 860.1 856.7 855.1 855.5 858.5 862.6 862.2 860.2 853.3 DAY 2 22 28 13 6 8 31 1 12 2 19 12 MEAN QNH PRESSURE IN HPA 1024.0 1026.5 1019.3 1023.2 1022.0 1017.9 1016.3 1017.6 1020.5 1024.6 1024.1 1022.8 1021.6 MAX. QNH PRESSURE IN HPA 1030.9 1034.3 1024.9 1028.0 1026.2 1021.9 1020.7 1022.9 1028.7 1030.8 1029.3 1029.4 1034.3 DAY 21 3 6 8 14 3 9 18 22 26 21 18 MIN. QNH PRESSURE IN HPA 1015.5 1017.5 1008.1 1018.1 1015.9 1012.0 1010.2 1010.6 1014.0 1018.7 1018.3 1016.0 1008.1 DAY 2 22 28 13 6 8 31 1 12 2 19 12 MEAN QFF PRESSURE IN HPA 1031.8 1035.0 1018.8 1017.5 1014.7 1007.5 1003.8 1006.0 1011.5 1018.4 1022.0 1024.1 1017.6 MAX. QFF PRESSURE IN HPA 1039.9 1045.8 1026.4 1024.4 1020.5 1013.0 1009.1 1012.7 1023.9 1027.8 1031.4 1031.2 1045.8 DAY 30 8 11 1 13 12 9 18 22 23 21 18 MIN. QFF PRESSURE IN HPA 1019.8 1024.3 1007.2 1010.7 1005.1 1000.0 996.5 998.1 1003.8 1008.7 1016.6 1014.8 996.5 DAY 2 28 28 17 30 8 31 1 12 6 19 12 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION MAHABAD (40726) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 36 46 N LONGITUDE 45 43 E DATA PROCESSING CENTER ELEVATION 1385.0 M MEANS AND EXTREMES FOR THE YEAR 1990 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AIR TEMPERATURE (C) -2.0 0.2 5.1 10.6 16.4 22.8 25.7 24.0 21.4 14.2 9.5 2.3 12.5 MINIMUN AIR TEMPERATURE (C) -4.9 -2.4 0.2 4.9 8.7 13.4 17.2 14.9 11.3 7.4 3.1 -2.6 5.9 DAYS WITH MINIMUM TEMP. >=21 0 0 0 0 0 1 3 0 0 0 0 0 4 DAYS WITH MINIMUM TEMP. <=-4 20 9 5 0 0 0 0 0 0 0 0 10 44 DAYS WITH FREEZING MIN.<= 0 27 22 14 1 0 0 0 0 0 0 12 19 95 TEMPERATURE RECORDS LOWEST(C) -13.0 -9.4 -8.2 -1.0 1.6 9.0 12.4 12.2 6.8 1.4 -3.2 -17.8 -17.8 DAY 26 1 17 4 3 28 8 25 18 16 14 28 MAXIMUM AIR TEMPERATURE (C) 2.0 3.6 11.1 16.7 23.3 30.2 33.0 32.1 30.5 21.3 17.1 7.8 19.1 DAYS WITH MAXIMUM TEMP. >=30 0 0 0 0 0 15 23 22 19 0 0 0 79 DAYS WITH MAXIMUM TEMP. <= 0 11 7 1 0 0 0 0 0 0 0 0 7 26 TEMPERATURE RECORDS HIGHEST(C) 8.0 10.8 18.0 26.8 29.6 34.2 39.4 37.4 33.0 27.2 25.4 17.6 39.4 DAY 4 27 23 27 31 12 18 6 5 11 3 4 DIF. BETWEEN (MAX.-MIN.) (C) 6.9 6.0 10.9 11.8 14.6 16.8 15.8 17.2 19.2 13.9 14.0 10.4 13.2 MEAN DAILY TEMP. (MDT) (C) -1.5 0.6 5.7 10.8 16.0 21.8 25.1 23.5 20.9 14.4 10.1 2.6 12.5 COOLING DEG. DAYS(BASE 21 0C) 0.0 0.0 0.0 0.0 2.2 34.7 129.0 77.9 17.9 0.0 0.0 0.0 261.7 HEATING DEG. DAYS(BASE 18 0C) 603.8 486.6 382.6 218.2 76.9 0.0 0.0 0.0 0.1 113.4 237.3 478.1 2597.0 DEWPOINT (MEAN C) -6.4 -4.7 -2.0 1.5 3.2 3.9 8.3 6.9 0.3 2.5 -1.0 -3.6 0.7 MIXING RATIO (G/KG) 2.89 3.21 3.98 5.05 5.92 6.11 8.31 7.61 4.71 5.46 4.20 3.66 5.09 VAPOUR PRESSURE (HPA) 4.00 4.43 5.50 6.94 8.14 8.38 11.33 10.41 6.49 7.55 5.82 5.07 7.00 SATURATION DEF. (HPA) 1.48 1.94 3.77 6.60 11.60 20.70 23.20 20.91 20.64 9.47 6.87 3.10 10.86 RELATIVE HUMIDITY (MEAN %) 74 72 63 57 46 33 36 37 28 50 52 68 51 RELATIVE HUMIDITY (MAX. %) 88 85 83 79 69 54 54 56 45 71 73 84 70 RELATIVE HUMIDITY (MIN. %) 57 58 43 37 28 18 22 22 14 31 30 49 34 RELATIVE HUMIDITY (MEAN% 03UTC) 82 82 78 74 65 52 53 55 44 68 70 77 67 RELATIVE HUMIDITY (MEAN% 09UTC) 64 65 51 44 35 24 28 30 20 38 36 59 41 RELATIVE HUMIDITY (MEAN% 15UTC) 72 66 53 44 32 20 25 24 18 43 46 65 42 RH=0 => RELATIVE HUMIDITY < 0.5% AMOUNT OF PRECIPITATION MM. 44.5 34.0 63.7 91.4 11.4 0.0 0.1 0.0 0.0 19.6 20.3 27.6 312.6 DAYS WITH PRECIPITATION >=10 0 2 2 4 0 0 0 0 0 0 1 1 10 DAYS WITH PRECIPITATION >= 5 5 2 5 4 1 0 0 0 0 2 1 2 22 DAYS WITH PRECIPITATION >= 1 10 8 9 8 3 0 0 0 0 4 3 4 49 DAYS WITH PRECIPITATION 17 16 16 10 3 0 1 0 0 7 3 7 80 GREATEST DAILY PRECIPITATION 8.9 10.0 16.9 33.0 5.0 0.0 0.1 0.0 0.0 8.0 17.0 17.0 33.0 DAY 24 2 7 2 14