STATION DOUSHAN TAPPEH (40753) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 35 42 N LONGITUDE 51 20 E DATA PROCESSING CENTER ELEVATION 1209.2 M MEANS AND EXTREMES FOR THE YEAR 1972 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. 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OF WIND OBSERVATION **** **** **** 150 155 150 155 155 143 155 150 155 1368 VECTOR WIND DIRECTION (MEAN) *** *** *** 224 259 228 222 224 223 237 346 231 *** VECTOR WIND MAGNITUDE(KNOTS) **** **** **** 2.6 1.4 4.3 3.1 1.6 2.6 2.4 0.4 0.7 **** WIND STEADINESES (MEAN %) ***** ***** ***** 51.0 22.2 71.7 70.5 47.1 55.3 66.7 12.1 46.7 ***** WIND SPEED (MEAN KNOTS) **** **** **** 5.1 6.3 6.0 4.4 3.4 4.7 3.6 3.3 1.5 **** FASTEST WIND DIRECTION *** *** *** 240 60 220 260 240 250 250 10 250 *** FASTEST WIND SPEED (KNOTS) *** *** *** 18 20 17 15 20 18 25 20 18 *** DAY ** ** ** 5 3 17 1 1 10 23 16 17 DAYS WITH SKY CLEAR (0-2)/8 **** **** **** 9 8 23 29 24 29 20 17 11 **** DAYS WITH P.CLOUDY (3-6)/8 **** **** **** 13 15 6 2 6 1 10 8 8 **** DAYS WITH CLOUDY (7-8)/8 **** **** **** 8 8 1 0 1 0 1 5 12 **** DAYS WITH VISIBILITY =< 2 KM **** **** **** 0 0 0 0 1 0 2 0 10 **** DURATION OF SUNSHINE HOURS ****** ****** ****** 254.7 259.1 331.2 365.5 315.0 309.2 269.2 197.0 139.5 ****** ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION DOUSHAN TAPPEH (40753) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 35 42 N LONGITUDE 51 20 E DATA PROCESSING CENTER ELEVATION 1209.2 M MEANS AND EXTREMES FOR THE YEAR 1972 JAN. 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QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** PRESSURE AT HOUR 0300 UTC. MEAN QFE PRESSURE IN HPA ****** ****** ****** 879.0 878.1 876.8 875.4 878.9 880.6 884.9 884.2 884.5 ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** 884.9 886.3 883.7 879.4 884.1 886.2 891.2 888.4 890.8 ****** DAY ** ** ** 16 23 1 25 8 18 26 24 28 MIN. QFE PRESSURE IN HPA ****** ****** ****** 872.4 869.5 870.4 869.8 867.5 875.8 880.7 879.1 877.6 ****** DAY ** ** ** 25 6 11 5 1 10 30 4 17 MEAN QNH PRESSURE IN HPA ****** ****** ****** 1016.1 1015.1 1013.7 1012.1 1016.1 1018.0 1022.8 1021.9 1022.4 ****** MAX. 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QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** PRESSURE AT HOUR 0900 UTC. MEAN QFE PRESSURE IN HPA ****** ****** ****** 879.4 878.0 876.9 875.3 879.2 881.2 884.6 883.8 884.9 ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** 885.0 886.5 883.4 879.6 884.5 887.0 890.9 888.4 890.7 ****** DAY ** ** ** 16 24 1 24 8 17 26 9 28 MIN. QFE PRESSURE IN HPA ****** ****** ****** 872.9 869.1 870.4 869.5 867.9 876.2 878.7 879.0 876.7 ****** DAY ** ** ** 25 6 24 31 1 10 30 28 16 MEAN QNH PRESSURE IN HPA ****** ****** ****** 1016.6 1015.1 1013.8 1012.0 1016.3 1018.6 1022.5 1021.5 1022.8 ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** 1022.9 1024.6 1021.1 1016.8 1022.3 1025.1 1029.5 1026.7 1029.3 ****** DAY ** ** ** 16 24 1 24 8 17 26 9 28 MIN. 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QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION DOUSHAN TAPPEH (40753) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 35 42 N LONGITUDE 51 20 E DATA PROCESSING CENTER ELEVATION 1209.2 M MEANS AND EXTREMES FOR THE YEAR 1972 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 1500 UTC. MEAN QFE PRESSURE IN HPA ****** ****** ****** 877.9 877.0 874.9 873.0 876.7 879.3 883.1 882.8 884.3 ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** 882.7 885.2 880.9 876.8 882.4 885.3 888.8 887.7 889.7 ****** DAY ** ** ** 16 23 1 10 24 17 26 9 10 MIN. 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QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** PRESSURE AT HOUR 2100 UTC. MEAN QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION DOUSHAN TAPPEH (40753) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 35 42 N LONGITUDE 51 20 E DATA PROCESSING CENTER ELEVATION 1209.2 M MEANS AND EXTREMES FOR THE YEAR 1973 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AIR TEMPERATURE (C) 0.6 8.6 11.7 17.2 23.8 30.7 32.0 31.6 26.6 22.2 11.8 5.6 18.5 MINIMUN AIR TEMPERATURE (C) -5.2 2.5 5.3 10.2 15.7 22.5 24.9 24.4 19.0 14.4 4.2 -0.2 11.5 DAYS WITH MINIMUM TEMP. >=21 0 0 0 0 4 22 29 31 10 0 0 0 96 DAYS WITH MINIMUM TEMP. <=-4 18 1 0 0 0 0 0 0 0 0 1 1 21 DAYS WITH FREEZING MIN.<= 0 31 9 3 0 0 0 0 0 0 0 7 20 70 TEMPERATURE RECORDS LOWEST(C) -12.0 -5.0 -2.0 5.0 9.0 15.0 19.0 22.0 13.0 8.0 -4.0 -4.0 -12.0 DAY 3 7 9 20 1 6 18 15 27 31 7 15 MAXIMUM AIR TEMPERATURE (C) 4.1 12.3 15.8 21.4 27.8 34.9 36.8 35.7 30.7 26.3 16.2 9.7 22.6 DAYS WITH MAXIMUM TEMP. >=30 0 0 0 0 9 29 31 31 21 4 0 0 125 DAYS WITH MAXIMUM TEMP. <= 0 4 0 0 0 0 0 0 0 0 0 0 0 4 TEMPERATURE RECORDS HIGHEST(C) 9.0 22.0 22.0 29.0 34.0 39.0 42.0 40.0 36.0 31.0 24.0 16.0 42.0 DAY 14 19 2 27 29 22 14 4 1 11 2 4 DIF. BETWEEN (MAX.-MIN.) (C) 9.3 9.8 10.5 11.2 12.1 12.4 11.9 11.3 11.7 11.9 12.0 9.9 11.1 MEAN DAILY TEMP. (MDT) (C) -0.5 7.4 10.5 15.8 21.8 28.7 30.9 30.0 24.8 20.3 10.2 4.7 17.1 COOLING DEG. DAYS(BASE 21 0C) 0.0 0.0 0.0 5.0 51.0 232.0 306.0 280.5 125.0 22.0 0.0 0.0 1021.5 HEATING DEG. DAYS(BASE 18 0C) 575.0 297.5 231.0 84.0 6.0 0.0 0.0 0.0 0.5 7.0 235.5 411.5 1848.0 DEWPOINT (MEAN C) -8.0 -1.3 -3.0 -0.1 1.8 3.8 6.7 6.0 3.5 -0.4 -6.3 -5.2 -0.2 MIXING RATIO (G/KG) 2.60 4.10 3.66 4.53 5.22 5.94 7.23 6.85 5.71 4.32 2.91 3.05 4.68 VAPOUR PRESSURE (HPA) 3.67 5.76 5.14 6.34 7.30 8.27 10.02 9.55 8.00 6.09 4.11 4.31 6.55 SATURATION DEF. (HPA) 2.91 6.01 9.15 14.13 23.15 37.39 39.46 38.00 28.17 21.49 10.61 5.17 19.64 RELATIVE HUMIDITY (MEAN %) 56 53 39 35 27 20 23 22 24 23 32 50 34 RELATIVE HUMIDITY (MAX. %) 72 69 55 53 42 32 34 31 34 34 53 68 48 RELATIVE HUMIDITY (MIN. %) 39 43 26 25 17 14 16 16 18 17 19 35 24 RELATIVE HUMIDITY (MEAN% 03UTC) 63 65 51 51 42 32 32 32 33 34 51 61 46 RELATIVE HUMIDITY (MEAN% 09UTC) 51 48 34 30 22 17 21 19 22 20 23 42 29 RELATIVE HUMIDITY (MEAN% 15UTC) 61 52 37 29 20 15 17 18 20 22 29 50 31 RH=0 => RELATIVE HUMIDITY < 0.5% AMOUNT OF PRECIPITATION MM. 27.0 56.2 11.2 28.8 0.1 0.0 0.0 0.0 0.0 0.0 11.2 18.0 152.5 DAYS WITH PRECIPITATION >=10 0 3 0 2 0 0 0 0 0 0 0 0 5 DAYS WITH PRECIPITATION >= 5 1 5 1 2 0 0 0 0 0 0 1 2 12 DAYS WITH PRECIPITATION >= 1 8 7 3 6 0 0 0 0 0 0 2 4 30 DAYS WITH PRECIPITATION 10 9 5 8 1 0 0 0 0 0 3 5 41 GREATEST DAILY PRECIPITATION 7.0 15.0 6.0 10.0 0.1 0.0 0.0 0.0 0.0 0.0 8.0 7.0 15.0 DAY 16 23 29 1 10 ** ** ** ** ** 23 29 DAY WITH THUNDER STORM 0 0 0 0 0 0 0 0 0 0 0 0 0 DAYS WITH SNOW OR SLEET 4 0 0 0 0 0 0 0 0 0 0 2 6 DAYS WITH DUST 17 11 7 8 7 15 9 11 16 15 5 12 133 WIND DIRECTION (PREVAILING) 225 270 270 270 270 225 225 225 225 225 225 45 225 PREVAILING WIND SPEED(KNOTS) 7.1 12.8 13.3 12.6 13.1 7.8 5.9 6.2 6.0 6.8 8.2 5.4 7.8 PREVAILING WIND PERCENT 9.7 17.1 16.8 23.3 27.7 28.7 25.2 15.5 13.3 11.0 11.3 6.5 14.4 CALMS PERCENT OF WIND 70.3 52.1 52.3 46.0 38.7 52.0 49.0 74.8 66.7 74.8 66.7 80.0 60.4 NO. OF WIND OBSERVATION 155 140 155 150 155 150 155 155 150 155 150 155 1825 VECTOR WIND DIRECTION (MEAN) 241 275 260 260 248 224 214 209 218 238 244 261 244 VECTOR WIND MAGNITUDE(KNOTS) 0.5 1.8 2.8 3.5 5.2 2.7 2.2 1.1 1.3 1.1 1.6 0.7 1.9 WIND STEADINESES (MEAN %) 22.7 40.0 58.3 61.4 78.8 75.0 68.7 68.7 65.0 57.9 55.2 43.8 55.9 WIND SPEED (MEAN KNOTS) 2.2 4.5 4.8 5.7 6.6 3.6 3.2 1.6 2.0 1.9 2.9 1.6 3.4 FASTEST WIND DIRECTION 250 270 270 270 250 240 230 150 280 270 270 270 270 FASTEST WIND SPEED (KNOTS) 22 27 25 30 30 20 12 10 12 20 25 20 30 DAY 17 1 7 6 23 4 22 13 6 5 6 6 DAYS WITH SKY CLEAR (0-2)/8 14 13 13 12 26 28 27 28 29 19 21 19 249 DAYS WITH P.CLOUDY (3-6)/8 11 10 9 10 4 2 4 3 1 11 7 7 79 DAYS WITH CLOUDY (7-8)/8 6 5 9 8 1 0 0 0 0 1 2 5 37 DAYS WITH VISIBILITY =< 2 KM 4 1 0 2 1 0 0 0 2 1 1 5 17 DURATION OF SUNSHINE HOURS 170.2 179.8 216.3 241.8 344.3 354.2 337.5 330.7 303.2 255.4 190.9 222.7 3147.0 ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION DOUSHAN TAPPEH (40753) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 35 42 N LONGITUDE 51 20 E DATA PROCESSING CENTER ELEVATION 1209.2 M MEANS AND EXTREMES FOR THE YEAR 1973 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL MEAN QFE PRESSURE IN HPA 884.2 880.4 879.6 877.4 877.3 874.5 872.6 877.2 879.7 883.1 883.3 884.2 879.5 MAX. QFE PRESSURE IN HPA 896.3 889.1 890.7 885.4 886.1 881.1 878.8 881.7 887.8 889.0 891.1 894.3 896.3 DAY-HOUR 26- 6 7- 6 10- 6 11- 6 8- 6 3- 6 23- 6 7- 6 29- 3 23- 6 12- 6 27- 6 MIN. QFE PRESSURE IN HPA 871.0 862.0 871.6 870.4 870.2 866.7 866.2 872.3 868.6 876.7 875.3 874.8 862.0 DAY-HOUR 31-15 22-12 22-15 8-15 29-15 15-15 9-15 28-15 29- 6 29-15 4-15 7-12 MEAN QNH PRESSURE IN HPA 1022.0 1017.7 1016.9 1014.4 1014.3 1011.0 1008.9 1014.1 1017.0 1020.8 1020.9 1022.0 1016.7 MAX. QNH PRESSURE IN HPA 1035.6 1027.5 1029.3 1023.3 1024.1 1018.5 1015.9 1019.2 1026.0 1027.4 1029.8 1033.4 1035.6 DAY-HOUR 26- 6 7- 6 10- 6 11- 6 8- 6 3- 6 23- 6 7- 6 29- 3 23- 6 12- 6 27- 6 MIN. QNH PRESSURE IN HPA 1007.2 997.0 1007.8 1006.5 1006.3 1002.3 1001.7 1008.6 1004.4 1013.6 1012.0 1011.4 997.0 DAY-HOUR 31-15 22-12 22-15 8-15 29-15 15-15 9-15 28-15 29- 6 29-15 4-15 7-12 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY-HOUR **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY-HOUR **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** PRESSURE AT HOUR 0000 UTC. MEAN QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** PRESSURE AT HOUR 0300 UTC. MEAN QFE PRESSURE IN HPA 884.3 880.6 880.0 877.9 878.0 875.0 873.3 878.0 880.5 883.7 883.8 884.4 880.0 MAX. QFE PRESSURE IN HPA 894.7 888.3 889.2 884.7 885.5 880.5 878.0 881.5 887.8 888.5 890.2 893.3 894.7 DAY 26 7 10 11 8 3 23 7 29 23 12 27 MIN. QFE PRESSURE IN HPA 871.9 867.8 872.3 874.4 872.1 868.5 868.4 875.0 875.3 878.6 876.9 875.8 867.8 DAY 16 22 7 28 30 16 11 4 2 30 5 7 MEAN QNH PRESSURE IN HPA 1022.1 1017.9 1017.3 1015.0 1015.0 1011.6 1009.8 1015.0 1017.8 1021.4 1021.5 1022.2 1017.2 MAX. QNH PRESSURE IN HPA 1033.8 1026.6 1027.6 1022.6 1023.5 1017.8 1015.0 1019.0 1026.0 1026.8 1028.7 1032.2 1033.8 DAY 26 7 10 11 8 3 23 7 29 23 12 27 MIN. QNH PRESSURE IN HPA 1008.2 1003.5 1008.6 1011.0 1008.4 1004.3 1004.2 1011.6 1012.0 1015.7 1013.8 1012.6 1003.5 DAY 16 22 7 28 30 16 11 4 2 30 5 7 MEAN QFF PRESSURE IN HPA 1027.0 1018.6 1015.9 1010.9 1007.7 1000.9 998.0 1003.9 1009.3 1015.3 1020.7 1024.2 1012.7 MAX. QFF PRESSURE IN HPA 1040.4 1031.9 1030.2 1020.0 1017.0 1007.9 1003.0 1008.3 1020.7 1021.4 1028.6 1034.6 1040.4 DAY 3 7 10 11 8 3 23 23 29 23 10 27 MIN. QFF PRESSURE IN HPA 1011.1 1002.9 1005.6 1003.0 998.2 994.2 992.6 999.6 1001.4 1010.0 1009.0 1012.8 992.6 DAY 16 22 22 28 30 15 15 4 2 30 5 7 ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION DOUSHAN TAPPEH (40753) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 35 42 N LONGITUDE 51 20 E DATA PROCESSING CENTER ELEVATION 1209.2 M MEANS AND EXTREMES FOR THE YEAR 1973 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 0600 UTC. MEAN QFE PRESSURE IN HPA 885.4 881.2 881.0 878.7 878.6 875.7 874.0 878.8 880.8 884.4 884.6 885.5 880.7 MAX. QFE PRESSURE IN HPA 896.3 889.1 890.7 885.4 886.1 881.1 878.8 881.7 887.4 889.0 891.1 894.3 896.3 DAY 26 7 10 11 8 3 23 7 27 23 12 27 MIN. QFE PRESSURE IN HPA 873.0 866.7 873.5 874.5 872.6 869.4 869.3 875.4 868.6 879.2 878.6 877.5 866.7 DAY 16 22 7 8 30 15 10 4 29 30 5 7 MEAN QNH PRESSURE IN HPA 1023.4 1018.6 1018.5 1015.8 1015.7 1012.4 1010.5 1015.9 1018.2 1022.3 1022.4 1023.5 1018.1 MAX. QNH PRESSURE IN HPA 1035.6 1027.5 1029.3 1023.3 1024.1 1018.5 1015.9 1019.2 1025.6 1027.4 1029.8 1033.4 1035.6 DAY 26 7 10 11 8 3 23 7 27 23 12 27 MIN. QNH PRESSURE IN HPA 1009.4 1002.3 1010.0 1011.1 1008.9 1005.3 1005.2 1012.1 1004.4 1016.4 1015.7 1014.5 1002.3 DAY 16 22 7 8 30 15 10 4 29 30 5 7 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** PRESSURE AT HOUR 0900 UTC. MEAN QFE PRESSURE IN HPA 884.5 880.6 880.2 878.0 877.8 875.0 873.2 877.7 880.6 883.5 883.4 884.7 879.9 MAX. QFE PRESSURE IN HPA 896.0 887.5 890.2 884.5 885.1 880.6 877.8 880.9 887.6 888.7 889.9 893.7 896.0 DAY 26 7 10 11 7 3 23 7 29 22 12 26 MIN. QFE PRESSURE IN HPA 873.3 865.0 873.5 873.4 872.4 868.4 868.8 874.9 875.3 878.3 877.5 875.3 865.0 DAY 16 22 22 28 30 15 10 4 1 30 4 7 MEAN QNH PRESSURE IN HPA 1022.3 1018.0 1017.5 1015.0 1014.8 1011.7 1009.6 1014.7 1017.9 1021.2 1021.1 1022.5 1017.2 MAX. QNH PRESSURE IN HPA 1035.3 1025.7 1028.7 1022.3 1023.0 1017.9 1014.8 1018.3 1025.8 1027.1 1028.4 1032.7 1035.3 DAY 26 7 10 11 7 3 23 7 29 22 12 26 MIN. QNH PRESSURE IN HPA 1009.7 1000.4 1010.0 1009.8 1008.7 1004.2 1004.7 1011.5 1012.0 1015.4 1014.5 1012.0 1000.4 DAY 16 22 22 28 30 15 10 4 1 30 4 7 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** PRESSURE AT HOUR 1200 UTC. MEAN QFE PRESSURE IN HPA 883.4 879.7 878.6 876.5 876.4 873.7 871.6 876.0 878.7 882.1 882.1 883.4 878.5 MAX. QFE PRESSURE IN HPA 893.7 886.6 888.0 882.2 883.9 879.0 876.1 879.0 885.4 887.7 888.6 892.6 893.7 DAY 25 7 10 11 7 2 27 22 29 22 11 26 MIN. QFE PRESSURE IN HPA 873.6 862.0 872.2 871.0 871.0 867.3 866.9 873.1 873.1 877.2 875.7 874.8 862.0 DAY 13 22 22 8 29 15 9 28 1 29 4 7 MEAN QNH PRESSURE IN HPA 1021.1 1017.0 1015.7 1013.3 1013.3 1010.1 1007.8 1012.7 1015.8 1019.6 1019.6 1021.1 1015.6 MAX. QNH PRESSURE IN HPA 1032.7 1024.7 1026.3 1019.7 1021.7 1016.2 1012.9 1016.2 1023.3 1025.9 1026.9 1031.4 1032.7 DAY 25 7 10 11 7 2 27 22 29 22 11 26 MIN. QNH PRESSURE IN HPA 1010.1 997.0 1008.5 1007.2 1007.2 1003.0 1002.5 1009.5 1009.5 1014.1 1012.4 1011.4 997.0 DAY 13 22 22 8 29 15 9 28 1 29 4 7 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION DOUSHAN TAPPEH (40753) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 35 42 N LONGITUDE 51 20 E DATA PROCESSING CENTER ELEVATION 1209.2 M MEANS AND EXTREMES FOR THE YEAR 1973 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 1500 UTC. MEAN QFE PRESSURE IN HPA 883.5 879.8 878.3 876.0 876.0 873.0 870.9 875.4 878.3 881.8 882.4 883.3 878.2 MAX. QFE PRESSURE IN HPA 893.3 886.8 888.0 882.0 883.7 878.4 875.6 878.2 885.0 887.6 889.3 892.2 893.3 DAY 3 7 10 10 8 2 22 6 29 22 12 26 MIN. QFE PRESSURE IN HPA 871.0 862.0 871.6 870.4 870.2 866.7 866.2 872.3 872.0 876.7 875.3 875.6 862.0 DAY 31 22 22 8 29 15 9 28 1 29 4 7 MEAN QNH PRESSURE IN HPA 1021.2 1017.1 1015.4 1012.8 1012.7 1009.4 1007.1 1012.1 1015.4 1019.3 1020.0 1021.0 1015.3 MAX. QNH PRESSURE IN HPA 1032.2 1024.9 1026.3 1019.5 1021.4 1015.5 1012.3 1015.3 1022.9 1025.8 1027.7 1031.0 1032.2 DAY 3 7 10 10 8 2 22 6 29 22 12 26 MIN. QNH PRESSURE IN HPA 1007.2 997.0 1007.8 1006.5 1006.3 1002.3 1001.7 1008.6 1008.3 1013.6 1012.0 1012.3 997.0 DAY 31 22 22 8 29 15 9 28 1 29 4 7 MEAN QFF PRESSURE IN HPA 1026.0 1017.6 1014.0 1008.6 1005.4 998.6 995.3 1000.9 1006.9 1013.1 1019.2 1022.9 1010.7 MAX. QFF PRESSURE IN HPA 1040.3 1029.8 1028.3 1017.0 1015.0 1005.9 1000.0 1004.1 1017.4 1020.2 1027.5 1034.2 1040.3 DAY 3 7 10 10 8 2 22 23 29 22 12 26 MIN. QFF PRESSURE IN HPA 1008.3 997.1 1003.4 1000.9 995.5 992.0 989.4 996.1 997.5 1008.7 1006.3 1012.4 989.4 DAY 31 22 22 28 29 15 15 4 1 29 4 6 PRESSURE AT HOUR 1800 UTC. MEAN QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** PRESSURE AT HOUR 2100 UTC. MEAN QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION DOUSHAN TAPPEH (40753) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 35 42 N LONGITUDE 51 20 E DATA PROCESSING CENTER ELEVATION 1209.2 M MEANS AND EXTREMES FOR THE YEAR 1974 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AIR TEMPERATURE (C) 0.8 2.4 11.6 15.6 25.5 30.4 30.4 29.7 25.7 18.9 14.1 4.0 17.4 MINIMUN AIR TEMPERATURE (C) -3.6 -2.6 5.8 7.0 17.4 22.1 22.9 22.3 18.2 10.5 7.0 -1.2 10.5 DAYS WITH MINIMUM TEMP. >=21 0 0 0 0 6 21 24 25 5 0 0 0 81 DAYS WITH MINIMUM TEMP. <=-4 17 9 0 0 0 0 0 0 0 0 0 7 33 DAYS WITH FREEZING MIN.<= 0 31 24 5 2 0 0 0 0 0 0 0 22 84 TEMPERATURE RECORDS LOWEST(C) -10.0 -8.0 -2.0 -2.0 7.0 12.0 17.0 19.0 11.0 5.0 3.0 -6.0 -10.0 DAY 19 3 5 1 1 8 7 25 26 27 27 27 MAXIMUM AIR TEMPERATURE (C) 3.6 5.7 15.4 20.1 29.6 34.8 35.1 34.2 30.2 23.2 18.0 7.7 21.5 DAYS WITH MAXIMUM TEMP. >=30 0 0 0 0 18 28 31 30 17 0 0 0 124 DAYS WITH MAXIMUM TEMP. <= 0 3 1 0 0 0 0 0 0 0 0 0 0 4 TEMPERATURE RECORDS HIGHEST(C) 6.0 12.0 26.0 27.0 35.0 39.0 40.0 37.0 34.0 27.0 25.0 15.0 40.0 DAY 20 14 20 18 23 18 1 13 9 23 3 2 DIF. BETWEEN (MAX.-MIN.) (C) 7.2 8.3 9.6 13.1 12.2 12.7 12.2 11.9 12.0 12.7 11.0 8.9 11.0 MEAN DAILY TEMP. (MDT) (C) 0.0 1.5 10.6 13.5 23.5 28.4 29.0 28.3 24.2 16.8 12.5 3.3 16.0 COOLING DEG. DAYS(BASE 21 0C) 0.0 0.0 0.0 0.0 98.5 224.0 248.5 225.5 101.0 0.0 0.0 0.0 897.5 HEATING DEG. DAYS(BASE 18 0C) 558.0 461.0 231.0 139.0 7.0 0.0 0.0 0.0 0.0 45.0 162.5 456.5 2060.0 DEWPOINT (MEAN C) -5.0 -4.3 1.9 -1.6 0.4 2.8 8.1 8.1 4.2 -1.5 -1.1 -4.0 0.7 MIXING RATIO (G/KG) 3.10 3.31 5.15 4.15 4.68 5.60 8.00 8.23 6.01 3.99 4.09 3.36 4.97 VAPOUR PRESSURE (HPA) 4.37 4.66 7.23 5.81 6.55 7.79 11.10 11.41 8.41 5.64 5.78 4.74 6.96 SATURATION DEF. (HPA) 2.20 2.81 7.66 13.01 27.37 37.12 33.44 31.31 25.51 16.90 10.90 3.66 17.66 RELATIVE HUMIDITY (MEAN %) 68 63 57 38 22 20 27 28 27 27 38 59 40 RELATIVE HUMIDITY (MAX. %) 79 76 70 57 32 30 41 39 39 37 54 73 52 RELATIVE HUMIDITY (MIN. %) 55 51 45 25 14 13 19 22 20 20 27 47 30 RELATIVE HUMIDITY (MEAN% 03UTC) 71 70 69 53 31 30 41 38 38 36 53 65 50 RELATIVE HUMIDITY (MEAN% 09UTC) 64 60 54 34 19 17 23 26 24 22 32 52 36 RELATIVE HUMIDITY (MEAN% 15UTC) 70 64 52 32 19 14 22 24 24 25 35 65 37 RH=0 => RELATIVE HUMIDITY < 0.5% AMOUNT OF PRECIPITATION MM. 64.6 60.0 32.6 35.0 0.0 10.5 40.0 0.0 3.0 0.0 5.0 61.0 311.7 DAYS WITH PRECIPITATION >=10 2 2 0 1 0 0 1 0 0 0 0 3 9 DAYS WITH PRECIPITATION >= 5 6 5 2 4 0 1 4 0 0 0 0 3 25 DAYS WITH PRECIPITATION >= 1 14 11 9 8 0 2 8 0 2 0 2 7 63 DAYS WITH PRECIPITATION 18 12 12 9 0 4 8 0 3 0 2 8 76 GREATEST DAILY PRECIPITATION 12.0 16.0 8.1 10.0 0.0 9.0 10.0 0.0 2.0 0.0 3.0 21.0 21.0 DAY 14 26 1 5 ** 12 18 ** 25 ** 8 6 DAY WITH THUNDER STORM 0 0 1 2 0 0 1 0 1 0 0 0 5 DAYS WITH SNOW OR SLEET 11 5 1 0 0 0 0 0 0 0 0 4 21 DAYS WITH DUST 10 16 12 14 10 10 15 14 20 14 15 17 167 WIND DIRECTION (PREVAILING) 45 225 225 270 225 225 225 225 225 45 225 45 225 PREVAILING WIND SPEED(KNOTS) 5.9 6.2 8.3 16.7 8.9 8.1 8.1 6.4 7.9 5.9 6.9 5.4 7.8 PREVAILING WIND PERCENT 7.1 7.1 13.6 17.3 16.1 10.7 22.6 24.2 14.7 8.4 8.3 9.7 12.0 CALMS PERCENT OF WIND 84.5 82.9 69.5 57.3 55.5 69.3 41.9 54.1 59.3 71.0 72.4 81.3 66.4 NO. OF WIND OBSERVATION 155 140 154 150 155 150 155 157 150 155 145 155 1821 VECTOR WIND DIRECTION (MEAN) 66 235 236 258 254 237 215 231 247 278 262 338 246 VECTOR WIND MAGNITUDE(KNOTS) 0.3 0.3 1.2 3.7 1.8 1.7 1.9 1.9 1.3 0.9 1.3 0.2 1.2 WIND STEADINESES (MEAN %) 37.5 30.0 50.0 71.2 42.9 65.4 41.3 61.3 40.6 42.9 61.9 18.2 44.4 WIND SPEED (MEAN KNOTS) 0.8 1.0 2.4 5.2 4.2 2.6 4.6 3.1 3.2 2.1 2.1 1.1 2.7 FASTEST WIND DIRECTION 60 210 240 270 280 250 80 250 270 260 270 280 280 FASTEST WIND SPEED (KNOTS) 12 12 18 28 30 20 18 20 25 25 16 15 30 DAY 24 5 28 7 5 3 3 22 3 29 11 23 DAYS WITH SKY CLEAR (0-2)/8 10 7 4 10 14 27 16 24 24 28 15 18 197 DAYS WITH P.CLOUDY (3-6)/8 7 11 14 10 15 3 15 7 5 3 13 8 111 DAYS WITH CLOUDY (7-8)/8 14 10 13 10 2 0 0 0 1 0 1 5 56 DAYS WITH VISIBILITY =< 2 KM 17 12 14 4 0 0 0 0 0 0 1 9 57 DURATION OF SUNSHINE HOURS 78.3 112.4 90.5 196.8 268.9 336.2 329.4 345.2 281.5 248.1 184.2 168.9 2640.4 ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION DOUSHAN TAPPEH (40753) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 35 42 N LONGITUDE 51 20 E DATA PROCESSING CENTER ELEVATION 1209.2 M MEANS AND EXTREMES FOR THE YEAR 1974 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL MEAN QFE PRESSURE IN HPA 881.3 882.4 881.7 876.1 877.6 874.6 874.0 875.2 878.8 884.5 884.7 882.6 879.5 MAX. QFE PRESSURE IN HPA 893.2 889.4 889.8 884.1 883.5 879.2 879.6 880.6 883.5 891.8 893.6 888.8 893.6 DAY-HOUR 5- 6 4- 6 10- 6 26- 6 9- 6 14- 6 29- 6 26- 6 9- 6 15- 6 18- 6 31- 9 MIN. QFE PRESSURE IN HPA 868.5 873.7 874.1 869.9 869.9 869.3 865.0 868.8 870.6 878.7 876.2 873.6 865.0 DAY-HOUR 21-15 12-12 24-12 20-15 27-15 25-15 4-15 8-15 2-15 29-15 24-12 5-15 MEAN QNH PRESSURE IN HPA 1018.7 1020.0 1019.2 1012.8 1014.6 1011.2 1010.6 1011.8 1016.0 1022.3 1022.5 1020.2 1016.7 MAX. QNH PRESSURE IN HPA 1032.1 1027.8 1028.3 1021.9 1021.2 1016.4 1016.8 1017.9 1021.2 1030.5 1032.6 1027.2 1032.6 DAY-HOUR 5- 6 4- 6 10- 6 26- 6 9- 6 14- 6 29- 6 26- 6 9- 6 15- 6 18- 6 31- 9 MIN. QNH PRESSURE IN HPA 1004.3 1010.2 1010.6 1005.9 1005.9 1005.2 1000.4 1004.7 1006.7 1015.8 1013.0 1010.1 1000.4 DAY-HOUR 21-15 12-12 24-12 20-15 27-15 25-15 4-15 8-15 2-15 29-15 24-12 5-15 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY-HOUR **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY-HOUR **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** PRESSURE AT HOUR 0000 UTC. MEAN QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** PRESSURE AT HOUR 0300 UTC. MEAN QFE PRESSURE IN HPA 881.5 882.6 881.7 876.4 878.2 875.2 874.8 875.9 879.3 884.9 884.9 882.6 879.8 MAX. QFE PRESSURE IN HPA 891.4 888.3 888.7 882.6 882.3 878.7 878.6 879.9 882.1 890.6 892.1 887.3 892.1 DAY 5 4 7 26 9 14 24 26 8 14 18 3 MIN. QFE PRESSURE IN HPA 872.3 875.5 875.6 870.7 872.5 871.6 868.2 871.7 872.0 881.2 879.0 874.5 868.2 DAY 22 12 25 28 28 27 5 17 3 21 26 23 MEAN QNH PRESSURE IN HPA 1019.0 1020.2 1019.2 1013.2 1015.3 1011.9 1011.5 1012.6 1016.5 1022.8 1022.8 1020.2 1017.1 MAX. QNH PRESSURE IN HPA 1030.1 1026.6 1027.1 1020.2 1019.9 1015.8 1015.7 1017.2 1019.6 1029.2 1030.9 1025.5 1030.9 DAY 5 4 7 26 9 14 24 26 8 14 18 3 MIN. QNH PRESSURE IN HPA 1008.6 1012.2 1012.3 1006.8 1008.8 1007.8 1004.0 1007.9 1008.3 1018.6 1016.2 1011.1 1004.0 DAY 22 12 25 28 28 27 5 17 3 21 26 23 MEAN QFF PRESSURE IN HPA 1023.1 1023.7 1017.6 1009.6 1007.3 1001.3 1000.7 1002.2 1008.3 1018.5 1020.7 1022.9 1013.0 MAX. QFF PRESSURE IN HPA 1033.1 1032.5 1030.7 1017.0 1014.4 1006.9 1005.2 1008.2 1013.4 1027.0 1029.5 1029.3 1033.1 DAY 5 4 7 26 2 5 24 26 26 15 18 31 MIN. QFF PRESSURE IN HPA 1010.9 1015.2 1006.7 1000.6 998.6 996.7 992.8 996.6 998.9 1013.6 1013.7 1012.9 992.8 DAY 21 12 24 28 28 27 5 9 3 28 3 23 ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION DOUSHAN TAPPEH (40753) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 35 42 N LONGITUDE 51 20 E DATA PROCESSING CENTER ELEVATION 1209.2 M MEANS AND EXTREMES FOR THE YEAR 1974 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 0600 UTC. MEAN QFE PRESSURE IN HPA 882.5 883.4 882.7 877.4 878.9 875.9 875.5 876.6 880.2 885.8 886.0 883.6 880.7 MAX. QFE PRESSURE IN HPA 893.2 889.4 889.8 884.1 883.5 879.2 879.6 880.6 883.5 891.8 893.6 888.6 893.6 DAY 5 4 10 26 9 14 29 26 9 15 18 31 MIN. QFE PRESSURE IN HPA 873.3 876.5 876.3 871.4 873.2 872.5 868.3 872.0 872.1 882.2 880.0 876.2 868.3 DAY 22 12 24 28 27 27 5 16 3 29 26 23 MEAN QNH PRESSURE IN HPA 1020.1 1021.1 1020.3 1014.4 1016.0 1012.6 1012.2 1013.5 1017.5 1023.9 1024.0 1021.3 1018.1 MAX. QNH PRESSURE IN HPA 1032.1 1027.8 1028.3 1021.9 1021.2 1016.4 1016.8 1017.9 1021.2 1030.5 1032.6 1026.9 1032.6 DAY 5 4 10 26 9 14 29 26 9 15 18 31 MIN. QNH PRESSURE IN HPA 1009.7 1013.3 1013.1 1007.6 1009.6 1008.8 1004.1 1008.3 1008.4 1019.7 1017.3 1013.0 1004.1 DAY 22 12 24 28 27 27 5 16 3 29 26 23 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** PRESSURE AT HOUR 0900 UTC. MEAN QFE PRESSURE IN HPA 881.5 882.9 882.2 876.6 878.2 875.2 874.7 875.9 879.5 885.0 885.1 882.7 879.9 MAX. QFE PRESSURE IN HPA 892.3 888.9 889.6 882.9 882.3 878.5 878.7 880.0 883.4 891.4 892.0 888.8 892.3 DAY 5 4 10 26 9 14 23 26 9 14 18 31 MIN. QFE PRESSURE IN HPA 871.4 875.2 875.5 871.4 872.1 871.5 869.1 871.4 872.2 880.3 879.0 875.6 869.1 DAY 21 12 24 28 27 25 5 16 3 29 26 23 MEAN QNH PRESSURE IN HPA 1019.0 1020.5 1019.8 1013.5 1015.2 1011.9 1011.3 1012.6 1016.7 1022.8 1023.0 1020.3 1017.2 MAX. QNH PRESSURE IN HPA 1031.1 1027.3 1028.1 1020.5 1019.9 1015.6 1015.8 1017.3 1021.1 1030.1 1030.8 1027.2 1031.1 DAY 5 4 10 26 9 14 23 26 9 14 18 31 MIN. QNH PRESSURE IN HPA 1007.6 1011.9 1012.2 1007.6 1008.4 1007.7 1005.0 1007.6 1008.5 1017.6 1016.2 1012.3 1005.0 DAY 21 12 24 28 27 25 5 16 3 29 26 23 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** PRESSURE AT HOUR 1200 UTC. MEAN QFE PRESSURE IN HPA 880.5 881.7 880.9 875.1 876.6 873.7 872.9 874.1 877.8 883.5 883.7 881.9 878.5 MAX. QFE PRESSURE IN HPA 891.3 887.5 888.0 881.2 879.9 877.0 877.0 878.0 880.6 889.6 891.1 887.8 891.3 DAY 5 3 7 26 8 22 23 26 30 14 18 31 MIN. QFE PRESSURE IN HPA 868.8 873.7 874.1 870.4 870.6 870.1 866.0 869.2 871.1 879.2 876.2 874.8 866.0 DAY 21 12 24 20 27 26 4 8 2 29 24 5 MEAN QNH PRESSURE IN HPA 1017.9 1019.2 1018.3 1011.7 1013.4 1010.1 1009.3 1010.7 1014.8 1021.2 1021.4 1019.4 1015.6 MAX. QNH PRESSURE IN HPA 1030.0 1025.7 1026.3 1018.6 1017.2 1013.9 1013.9 1015.0 1017.9 1028.1 1029.8 1026.0 1030.0 DAY 5 3 7 26 8 22 23 26 30 14 18 31 MIN. QNH PRESSURE IN HPA 1004.7 1010.2 1010.6 1006.5 1006.7 1006.1 1001.5 1005.1 1007.3 1016.4 1013.0 1011.4 1001.5 DAY 21 12 24 20 27 26 4 8 2 29 24 5 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION DOUSHAN TAPPEH (40753) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 35 42 N LONGITUDE 51 20 E DATA PROCESSING CENTER ELEVATION 1209.2 M MEANS AND EXTREMES FOR THE YEAR 1974 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 1500 UTC. MEAN QFE PRESSURE IN HPA 880.4 881.8 880.9 874.8 876.4 873.0 872.3 873.4 877.5 883.3 883.9 882.2 878.3 MAX. QFE PRESSURE IN HPA 890.8 887.7 888.0 879.2 880.2 875.8 876.4 877.8 880.9 889.4 891.2 888.0 891.2 DAY 5 3 9 3 10 18 23 26 8 14 18 6 MIN. QFE PRESSURE IN HPA 868.5 874.4 874.1 869.9 869.9 869.3 865.0 868.8 870.6 878.7 876.7 873.6 865.0 DAY 21 12 24 20 27 25 4 8 2 29 24 5 MEAN QNH PRESSURE IN HPA 1017.8 1019.3 1018.3 1011.5 1013.2 1009.4 1008.6 1009.8 1014.5 1020.9 1021.6 1019.8 1015.4 MAX. QNH PRESSURE IN HPA 1029.4 1025.9 1026.3 1016.4 1017.5 1012.6 1013.2 1014.8 1018.3 1027.8 1029.9 1026.3 1029.9 DAY 5 3 9 3 10 18 23 26 8 14 18 6 MIN. QNH PRESSURE IN HPA 1004.3 1011.0 1010.6 1005.9 1005.9 1005.2 1000.4 1004.7 1006.7 1015.8 1013.6 1010.1 1000.4 DAY 21 12 24 20 27 25 4 8 2 29 24 5 MEAN QFF PRESSURE IN HPA 1021.8 1022.6 1016.7 1007.8 1005.2 998.8 998.0 999.4 1006.3 1016.5 1019.5 1022.6 1011.3 MAX. QFF PRESSURE IN HPA 1032.4 1032.2 1029.3 1016.2 1012.3 1003.2 1002.7 1006.3 1011.5 1025.7 1028.2 1030.3 1032.4 DAY 5 4 7 2 2 10 23 26 30 14 18 6 MIN. QFF PRESSURE IN HPA 1007.5 1012.6 1004.6 1000.0 995.8 993.9 988.6 993.6 997.4 1010.8 1010.0 1013.9 988.6 DAY 21 12 24 20 27 25 4 8 2 29 24 5 PRESSURE AT HOUR 1800 UTC. MEAN QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** PRESSURE AT HOUR 2100 UTC. MEAN QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION DOUSHAN TAPPEH (40753) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 35 42 N LONGITUDE 51 20 E DATA PROCESSING CENTER ELEVATION 1209.2 M MEANS AND EXTREMES FOR THE YEAR 1975 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AIR TEMPERATURE (C) 3.7 5.8 11.5 19.3 24.1 30.6 33.3 29.8 25.6 17.6 8.8 2.6 17.7 MINIMUN AIR TEMPERATURE (C) -1.3 -0.7 4.3 10.9 15.5 22.3 26.9 23.8 19.9 12.1 5.0 -0.0 11.5 DAYS WITH MINIMUM TEMP. >=21 0 0 0 0 4 25 31 26 11 0 0 0 97 DAYS WITH MINIMUM TEMP. <=-4 6 6 0 0 0 0 0 0 0 0 0 0 12 DAYS WITH FREEZING MIN.<= 0 25 17 7 0 0 0 0 0 0 0 1 23 73 TEMPERATURE RECORDS LOWEST(C) -5.0 -7.0 -3.0 6.0 10.0 15.0 22.0 18.0 17.0 8.0 -1.0 -3.0 -7.0 DAY 15 13 4 3 7 4 19 28 24 16 30 7 MAXIMUM AIR TEMPERATURE (C) 7.2 9.3 15.9 23.5 28.3 34.6 38.8 35.5 31.3 23.5 13.8 6.5 22.4 DAYS WITH MAXIMUM TEMP. >=30 0 0 0 1 12 29 31 30 23 1 0 0 127 DAYS WITH MAXIMUM TEMP. <= 0 0 0 0 0 0 0 0 0 0 0 0 0 0 TEMPERATURE RECORDS HIGHEST(C) 12.0 17.0 23.0 30.0 36.0 41.0 42.0 40.0 36.0 30.0 21.0 12.0 42.0 DAY 2 24 23 14 30 28 25 1 7 1 1 13 DIF. BETWEEN (MAX.-MIN.) (C) 8.5 10.0 11.6 12.6 12.8 12.3 11.9 11.7 11.4 11.4 8.8 6.5 10.9 MEAN DAILY TEMP. (MDT) (C) 3.0 4.3 10.1 17.2 21.9 28.5 32.9 29.6 25.6 17.8 9.4 3.2 17.0 COOLING DEG. DAYS(BASE 21 0C) 0.0 0.0 0.0 1.0 58.0 224.0 367.5 268.0 138.0 8.0 0.0 0.0 1064.5 HEATING DEG. DAYS(BASE 18 0C) 466.5 383.5 244.0 45.5 4.5 0.0 0.0 0.0 0.0 48.0 258.5 458.0 1908.5 DEWPOINT (MEAN C) -3.4 -2.9 -2.4 1.4 3.5 2.5 5.7 5.5 5.6 -0.1 -1.3 -2.9 0.9 MIXING RATIO (G/KG) 3.47 3.67 3.78 5.05 5.86 5.43 6.84 6.62 6.64 4.45 4.04 3.62 4.95 VAPOUR PRESSURE (HPA) 4.89 5.15 5.30 7.08 8.18 7.57 9.49 9.21 9.29 6.25 5.71 5.11 6.94 SATURATION DEF. (HPA) 3.35 4.51 9.12 16.15 23.10 37.69 42.87 34.10 24.43 14.76 6.02 2.41 18.21 RELATIVE HUMIDITY (MEAN %) 62 57 41 33 30 19 19 23 29 32 52 69 39 RELATIVE HUMIDITY (MAX. %) 76 76 60 48 47 27 26 32 38 45 66 83 52 RELATIVE HUMIDITY (MIN. %) 48 43 28 23 19 13 13 16 21 21 38 53 28 RELATIVE HUMIDITY (MEAN% 03UTC) 66 73 57 46 45 27 24 29 36 42 62 74 48 RELATIVE HUMIDITY (MEAN% 09UTC) 57 52 34 28 25 16 16 18 25 24 41 61 33 RELATIVE HUMIDITY (MEAN% 15UTC) 66 53 38 30 25 16 15 19 27 30 50 69 37 RH=0 => RELATIVE HUMIDITY < 0.5% AMOUNT OF PRECIPITATION MM. 59.6 68.5 22.0 20.0 30.5 3.0 0.0 0.0 0.0 0.0 32.0 44.0 279.6 DAYS WITH PRECIPITATION >=10 3 3 0 1 1 0 0 0 0 0 2 1 11 DAYS WITH PRECIPITATION >= 5 4 5 2 1 2 0 0 0 0 0 2 5 21 DAYS WITH PRECIPITATION >= 1 10 8 5 4 5 1 0 0 0 0 5 8 46 DAYS WITH PRECIPITATION 10 10 7 5 6 1 0 0 1 0 5 10 55 GREATEST DAILY PRECIPITATION 16.0 23.0 8.0 15.0 18.0 3.0 0.0 0.0 0.0 0.0 13.0 11.0 23.0 DAY 4 21 2 23 13 3 ** ** ** ** 29 23 DAY WITH THUNDER STORM 0 0 0 0 1 0 0 0 0 0 1 1 3 DAYS WITH SNOW OR SLEET 4 2 1 0 0 0 0 0 0 0 0 6 13 DAYS WITH DUST 16 11 14 13 12 8 2 7 5 4 1 12 105 WIND DIRECTION (PREVAILING) 270 270 270 270 225 180 180 180 180 180 225 225 180 PREVAILING WIND SPEED(KNOTS) 11.6 11.5 14.5 11.0 9.0 5.9 7.6 6.8 6.3 6.6 7.1 7.2 6.5 PREVAILING WIND PERCENT 5.2 15.0 16.8 10.7 15.5 16.7 19.0 12.9 13.3 6.5 6.7 7.7 8.4 CALMS PERCENT OF WIND 87.1 67.9 62.6 72.0 51.0 59.3 62.5 69.8 72.1 81.9 80.4 83.9 71.9 NO. OF WIND OBSERVATION 155 140 155 150 155 150 232 248 240 248 240 248 2361 VECTOR WIND DIRECTION (MEAN) 263 268 258 251 233 198 172 164 182 202 204 223 225 VECTOR WIND MAGNITUDE(KNOTS) 0.6 1.2 3.0 1.5 2.2 1.8 1.6 0.8 0.6 0.8 0.5 0.6 1.0 WIND STEADINESES (MEAN %) 54.5 41.4 69.8 65.2 55.0 64.3 57.1 38.1 30.0 66.7 35.7 54.5 43.5 WIND SPEED (MEAN KNOTS) 1.1 2.9 4.3 2.3 4.0 2.8 2.8 2.1 2.0 1.2 1.4 1.1 2.3 FASTEST WIND DIRECTION 270 250 260 260 250 250 180 180 270 260 220 240 260 FASTEST WIND SPEED (KNOTS) 20 20 20 35 30 20 15 15 20 15 14 35 35 DAY 6 11 3 23 2 4 17 7 23 29 25 11 DAYS WITH SKY CLEAR (0-2)/8 14 11 14 15 13 27 26 28 26 29 17 11 231 DAYS WITH P.CLOUDY (3-6)/8 10 10 13 10 13 3 5 2 4 2 11 8 91 DAYS WITH CLOUDY (7-8)/8 7 7 4 5 5 0 0 1 0 0 2 12 43 DAYS WITH VISIBILITY =< 2 KM 12 4 1 0 0 1 0 0 0 0 1 12 31 DURATION OF SUNSHINE HOURS 159.8 154.8 227.2 214.3 ****** 323.5 342.0 325.9 294.1 266.9 197.1 104.5 ****** ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION DOUSHAN TAPPEH (40753) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 35 42 N LONGITUDE 51 20 E DATA PROCESSING CENTER ELEVATION 1209.2 M MEANS AND EXTREMES FOR THE YEAR 1975 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL MEAN QFE PRESSURE IN HPA 883.0 879.7 878.7 880.1 878.1 875.3 873.2 875.2 878.9 881.4 884.4 883.5 879.3 MAX. QFE PRESSURE IN HPA 894.9 889.0 887.0 889.9 884.7 880.0 879.4 895.7 899.7 890.2 891.8 890.3 899.7 DAY-HOUR 15- 6 17- 6 5- 6 3- 6 20- 6 8- 3 28- 6 7-18 5- 0 20- 6 15- 6 25- 6 MIN. QFE PRESSURE IN HPA 876.6 870.6 867.8 873.0 872.8 869.2 867.7 866.7 868.2 873.8 872.4 872.2 866.7 DAY-HOUR 5-12 10-15 18-15 23- 9 17-15 24-15 17-15 15-15 9-15 2-12 28-15 23-12 MEAN QNH PRESSURE IN HPA 1020.6 1016.9 1015.8 1017.3 1015.1 1012.0 1009.6 1011.8 1016.0 1018.9 1022.2 1021.3 1016.5 MAX. QNH PRESSURE IN HPA 1034.0 1027.4 1025.1 1028.4 1022.6 1017.3 1016.6 1034.9 1039.4 1028.7 1030.5 1028.9 1039.4 DAY-HOUR 15- 6 17- 6 5- 6 3- 6 20- 6 8- 3 28- 6 7-18 5- 0 20- 6 15- 6 25- 6 MIN. QNH PRESSURE IN HPA 1013.5 1006.7 1003.5 1009.4 1009.2 1005.1 1003.4 1002.3 1004.0 1010.3 1008.7 1008.5 1002.3 DAY-HOUR 5-12 10-15 18-15 23- 9 17-15 24-15 17-15 15-15 9-15 2-12 28-15 23-12 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** 997.1 1000.6 1006.7 1013.6 1021.3 1023.7 ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** 1004.6 1023.1 1029.7 1025.5 1032.8 1032.9 ****** DAY-HOUR **-** **-** **-** **-** **-** **-** 29- 3 7-18 5- 0 20- 6 15- 6 25- 6 MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** 990.7 989.7 993.8 1001.8 1007.3 1008.2 ****** DAY-HOUR **-** **-** **-** **-** **-** **-** 1-15 15-15 10- 0 2-12 28-21 23-12 PRESSURE AT HOUR 0000 UTC. MEAN QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** 873.4 874.9 879.1 881.3 884.3 883.3 ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** 877.9 880.4 899.7 889.0 890.6 889.3 ****** DAY ** ** ** ** ** ** 29 30 5 21 15 5 MIN. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** 868.9 869.1 868.5 874.9 872.4 876.1 ****** DAY ** ** ** ** ** ** 17 15 10 4 29 23 MEAN QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** 1009.8 1011.6 1016.3 1018.8 1022.1 1021.0 ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** 1014.9 1017.7 1039.4 1027.4 1029.2 1027.7 ****** DAY ** ** ** ** ** ** 29 30 5 21 15 5 MIN. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** 1004.8 1005.0 1004.3 1011.5 1008.7 1012.9 ****** DAY ** ** ** ** ** ** 17 15 10 4 29 23 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** 997.1 1000.1 1006.8 1013.1 1020.9 1023.1 ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** 1003.1 1008.2 1029.7 1024.1 1030.6 1031.3 ****** DAY ** ** ** ** ** ** 29 30 5 21 15 26 MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** 991.9 992.2 993.8 1003.8 1008.2 1012.9 ****** DAY ** ** ** ** ** ** 17 16 10 4 29 23 PRESSURE AT HOUR 0300 UTC. MEAN QFE PRESSURE IN HPA 883.0 879.8 879.2 880.6 878.6 876.1 873.9 875.9 879.4 881.7 884.5 883.3 879.7 MAX. QFE PRESSURE IN HPA 893.4 887.3 886.4 888.2 883.8 880.0 878.8 881.2 886.6 889.0 890.2 889.4 893.4 DAY 15 17 5 6 20 8 29 31 19 21 15 25 MIN. QFE PRESSURE IN HPA 877.8 872.1 871.1 873.7 875.1 871.0 870.0 869.7 869.3 874.6 873.6 874.6 869.3 DAY 5 7 27 20 17 25 17 15 10 4 29 23 MEAN QNH PRESSURE IN HPA 1020.7 1017.0 1016.3 1017.9 1015.7 1012.9 1010.4 1012.7 1016.7 1019.2 1022.4 1020.9 1016.9 MAX. QNH PRESSURE IN HPA 1032.3 1025.5 1024.5 1026.5 1021.5 1017.3 1015.9 1018.6 1024.7 1027.4 1028.7 1027.8 1032.3 DAY 15 17 5 6 20 8 29 31 19 21 15 25 MIN. QNH PRESSURE IN HPA 1014.8 1008.4 1007.3 1010.2 1011.8 1007.2 1006.0 1005.7 1005.2 1011.2 1010.1 1011.2 1005.2 DAY 5 7 27 20 17 25 17 15 10 4 29 23 MEAN QFF PRESSURE IN HPA 1023.6 1018.8 1015.2 1012.9 1008.3 1002.3 997.9 1001.8 1008.0 1014.7 1022.2 1023.8 1012.5 MAX. QFF PRESSURE IN HPA 1037.6 1027.6 1026.6 1024.1 1013.3 1007.8 1004.6 1010.0 1016.4 1025.2 1030.7 1032.2 1037.6 DAY 15 17 5 3 20 8 29 31 19 21 15 26 MIN. QFF PRESSURE IN HPA 1011.8 1009.7 1002.1 1003.0 1003.6 995.5 993.7 993.3 995.6 1004.9 1011.3 1011.5 993.3 DAY 5 11 27 20 31 25 17 15 10 4 29 23 ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION DOUSHAN TAPPEH (40753) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 35 42 N LONGITUDE 51 20 E DATA PROCESSING CENTER ELEVATION 1209.2 M MEANS AND EXTREMES FOR THE YEAR 1975 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 0600 UTC. MEAN QFE PRESSURE IN HPA 884.1 880.7 880.1 881.3 879.2 876.7 874.7 876.7 880.6 882.9 885.7 884.4 880.6 MAX. QFE PRESSURE IN HPA 894.9 889.0 887.0 889.9 884.7 880.0 879.4 882.6 887.8 890.2 891.8 890.3 894.9 DAY 15 17 5 3 20 8 28 31 19 20 15 25 MIN. QFE PRESSURE IN HPA 878.9 873.0 871.2 874.3 875.6 871.7 870.9 870.0 871.1 875.7 874.5 875.0 870.0 DAY 28 7 27 23 17 25 2 15 10 4 29 23 MEAN QNH PRESSURE IN HPA 1021.9 1018.1 1017.4 1018.8 1016.4 1013.5 1011.3 1013.6 1017.9 1020.6 1023.7 1022.3 1017.9 MAX. QNH PRESSURE IN HPA 1034.0 1027.4 1025.1 1028.4 1022.6 1017.3 1016.6 1020.2 1026.0 1028.7 1030.5 1028.9 1034.0 DAY 15 17 5 3 20 8 28 31 19 20 15 25 MIN. QNH PRESSURE IN HPA 1016.0 1009.4 1007.4 1010.9 1012.3 1007.9 1007.0 1006.0 1007.3 1012.4 1011.1 1011.6 1006.0 DAY 28 7 27 23 17 25 2 15 10 4 29 23 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** 999.2 1002.4 1008.6 1015.2 1023.0 1024.8 ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** 1004.5 1010.7 1017.6 1025.5 1032.8 1032.9 ****** DAY ** ** ** ** ** ** 29 31 19 20 15 25 MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** 994.9 993.2 997.3 1004.9 1012.2 1011.8 ****** DAY ** ** ** ** ** ** 16 15 10 2 29 23 PRESSURE AT HOUR 0900 UTC. MEAN QFE PRESSURE IN HPA 883.1 880.1 879.0 880.6 878.6 875.9 874.0 875.9 879.7 881.9 884.6 883.7 879.8 MAX. QFE PRESSURE IN HPA 892.8 888.5 885.9 888.4 884.0 879.0 878.9 881.0 887.7 889.4 890.4 889.9 892.8 DAY 15 17 5 3 19 8 28 31 18 20 14 25 MIN. QFE PRESSURE IN HPA 877.0 872.9 869.8 873.0 875.3 871.2 870.2 868.8 870.4 875.2 874.5 873.4 868.8 DAY 5 7 27 23 17 24 17 15 10 4 29 23 MEAN QNH PRESSURE IN HPA 1020.8 1017.4 1016.2 1017.9 1015.7 1012.6 1010.5 1012.6 1016.9 1019.5 1022.5 1021.5 1017.0 MAX. QNH PRESSURE IN HPA 1031.7 1026.8 1023.9 1026.7 1021.8 1016.2 1016.0 1018.4 1025.9 1027.8 1029.0 1028.4 1031.7 DAY 15 17 5 3 19 8 28 31 18 20 14 25 MIN. QNH PRESSURE IN HPA 1013.9 1009.3 1005.8 1009.4 1012.0 1007.4 1006.3 1004.7 1006.5 1011.9 1011.1 1009.8 1004.7 DAY 5 7 27 23 17 24 17 15 10 4 29 23 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** 998.3 1001.3 1007.3 1013.7 1021.2 1023.6 ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** 1003.7 1008.9 1016.9 1024.2 1029.7 1031.7 ****** DAY ** ** ** ** ** ** 28 31 18 20 14 25 MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** 993.3 991.7 995.7 1002.8 1011.5 1009.6 ****** DAY ** ** ** ** ** ** 17 15 10 2 28 23 PRESSURE AT HOUR 1200 UTC. MEAN QFE PRESSURE IN HPA 882.2 879.0 877.7 879.0 877.1 874.3 872.3 874.1 877.9 880.5 883.5 882.8 878.4 MAX. QFE PRESSURE IN HPA 892.2 887.7 884.0 886.6 882.8 877.8 877.3 879.1 885.5 888.0 889.9 889.0 892.2 DAY 14 17 5 3 19 7 28 31 18 20 14 25 MIN. QFE PRESSURE IN HPA 876.6 871.5 868.1 873.1 873.9 869.7 868.4 867.3 868.9 873.8 873.8 872.2 867.3 DAY 5 6 27 23 17 24 17 15 10 2 28 23 MEAN QNH PRESSURE IN HPA 1019.8 1016.1 1014.6 1016.1 1014.0 1010.9 1008.6 1010.7 1015.0 1017.9 1021.2 1020.4 1015.4 MAX. QNH PRESSURE IN HPA 1031.0 1025.9 1021.8 1024.7 1020.4 1014.8 1014.2 1016.3 1023.5 1026.3 1028.4 1027.4 1031.0 DAY 14 17 5 3 19 7 28 31 18 20 14 25 MIN. QNH PRESSURE IN HPA 1013.5 1007.7 1003.9 1009.5 1010.4 1005.7 1004.2 1003.0 1004.8 1010.3 1010.3 1008.5 1003.0 DAY 5 6 27 23 17 24 17 15 10 2 28 23 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** 996.4 999.3 1005.4 1012.4 1020.0 1022.4 ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** 1001.7 1006.7 1014.1 1022.7 1029.3 1030.9 ****** DAY ** ** ** ** ** ** 28 31 18 20 14 25 MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** 991.4 990.2 994.1 1001.8 1009.4 1008.2 ****** DAY ** ** ** ** ** ** 17 15 9 2 28 23 ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION DOUSHAN TAPPEH (40753) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 35 42 N LONGITUDE 51 20 E DATA PROCESSING CENTER ELEVATION 1209.2 M MEANS AND EXTREMES FOR THE YEAR 1975 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 1500 UTC. MEAN QFE PRESSURE IN HPA 882.4 878.7 877.5 878.9 877.1 873.9 871.6 873.6 877.6 880.5 883.6 883.1 878.2 MAX. QFE PRESSURE IN HPA 892.5 887.8 884.0 886.2 882.8 877.9 876.6 878.5 885.4 888.0 890.4 889.4 892.5 DAY 14 17 5 3 20 7 28 30 18 20 14 25 MIN. QFE PRESSURE IN HPA 877.0 870.6 867.8 873.2 872.8 869.2 867.7 866.7 868.2 873.8 872.4 874.1 866.7 DAY 27 10 18 14 17 24 17 15 9 2 28 23 MEAN QNH PRESSURE IN HPA 1020.0 1015.9 1014.4 1016.0 1014.0 1010.4 1007.9 1010.1 1014.6 1017.8 1021.3 1020.8 1015.3 MAX. QNH PRESSURE IN HPA 1031.3 1026.0 1021.8 1024.2 1020.4 1014.9 1013.5 1015.6 1023.3 1026.3 1029.0 1027.8 1031.3 DAY 14 17 5 3 20 7 28 30 18 20 14 25 MIN. QNH PRESSURE IN HPA 1013.9 1006.7 1003.5 1009.6 1009.2 1005.1 1003.4 1002.3 1004.0 1010.3 1008.7 1010.6 1002.3 DAY 27 10 18 14 17 24 17 15 9 2 28 23 MEAN QFF PRESSURE IN HPA 1022.8 1017.5 1013.2 1010.9 1006.6 999.8 995.3 999.1 1005.9 1013.4 1021.2 1023.6 1010.8 MAX. QFF PRESSURE IN HPA 1036.0 1027.9 1023.3 1021.8 1012.5 1005.3 1001.6 1006.7 1015.2 1023.6 1030.5 1032.4 1036.0 DAY 14 17 5 3 19 3 28 30 18 20 14 25 MIN. QFF PRESSURE IN HPA 1011.2 1007.4 999.4 1002.2 1001.3 993.0 990.7 989.7 994.1 1002.8 1008.6 1011.3 989.7 DAY 5 10 27 14 17 24 1 15 9 2 28 23 PRESSURE AT HOUR 1800 UTC. MEAN QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** 872.7 875.2 878.4 881.3 884.3 883.9 ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** 877.5 895.7 886.7 888.6 890.7 889.8 ****** DAY ** ** ** ** ** ** 28 7 18 20 14 25 MIN. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** 868.1 867.4 868.7 875.0 873.3 875.8 ****** DAY ** ** ** ** ** ** 17 15 9 9 28 23 MEAN QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** 1009.1 1011.9 1015.5 1018.7 1022.1 1021.7 ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** 1014.5 1034.9 1024.8 1026.9 1029.3 1028.3 ****** DAY ** ** ** ** ** ** 28 7 18 20 14 25 MIN. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** 1003.9 1003.1 1004.6 1011.6 1009.7 1012.6 ****** DAY ** ** ** ** ** ** 17 15 9 9 28 23 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** 996.5 1000.7 1006.2 1013.4 1021.5 1024.3 ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** 1002.5 1023.1 1016.2 1023.9 1030.9 1032.4 ****** DAY ** ** ** ** ** ** 28 7 18 20 14 25 MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** 991.5 989.9 994.3 1003.9 1008.8 1013.6 ****** DAY ** ** ** ** ** ** 17 15 9 2 28 23 PRESSURE AT HOUR 2100 UTC. MEAN QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** 873.1 875.0 878.5 881.4 884.4 884.0 ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** 877.5 880.2 886.7 888.8 890.9 889.8 ****** DAY ** ** ** ** ** ** 28 29 18 20 14 24 MIN. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** 868.7 868.5 868.7 875.1 872.4 877.0 ****** DAY ** ** ** ** ** ** 16 15 9 4 28 23 MEAN QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** 1009.6 1011.6 1015.6 1018.8 1022.2 1021.7 ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** 1014.5 1017.5 1024.8 1027.2 1029.5 1028.3 ****** DAY ** ** ** ** ** ** 28 29 18 20 14 24 MIN. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** 1004.6 1004.3 1004.6 1011.8 1008.7 1013.9 ****** DAY ** ** ** ** ** ** 16 15 9 4 28 23 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** 996.8 1000.3 1006.0 1013.1 1021.0 1023.9 ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** 1002.1 1008.1 1015.7 1023.8 1030.9 1031.7 ****** DAY ** ** ** ** ** ** 28 30 18 20 14 24 MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** 991.6 991.0 994.2 1003.8 1007.3 1014.6 ****** DAY ** ** ** ** ** ** 16 15 9 4 28 22 ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION DOUSHAN TAPPEH (40753) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 35 42 N LONGITUDE 51 20 E DATA PROCESSING CENTER ELEVATION 1209.2 M MEANS AND EXTREMES FOR THE YEAR 1976 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AIR TEMPERATURE (C) 4.8 2.7 6.4 15.1 21.2 27.9 31.5 30.1 26.0 18.1 9.6 5.3 16.6 MINIMUN AIR TEMPERATURE (C) 1.1 -0.6 2.2 10.1 15.8 22.1 25.5 24.5 20.4 12.7 5.1 2.0 11.7 DAYS WITH MINIMUM TEMP. >=21 0 0 0 0 1 22 29 31 12 0 0 0 95 DAYS WITH MINIMUM TEMP. <=-4 1 5 2 0 0 0 0 0 0 0 0 0 8 DAYS WITH FREEZING MIN.<= 0 14 21 8 0 0 0 0 0 0 0 1 6 50 TEMPERATURE RECORDS LOWEST(C) -5.0 -7.0 -8.0 5.0 12.0 16.0 20.0 21.0 16.0 5.0 -1.0 -2.0 -8.0 DAY 3 17 2 6 8 6 5 26 23 31 30 24 MAXIMUM AIR TEMPERATURE (C) 9.8 6.8 10.8 20.3 26.7 33.4 36.8 35.6 31.7 23.6 15.3 9.9 21.7 DAYS WITH MAXIMUM TEMP. >=30 0 0 0 0 3 28 31 31 22 0 0 0 115 DAYS WITH MAXIMUM TEMP. <= 0 0 0 1 0 0 0 0 0 0 0 0 0 1 TEMPERATURE RECORDS HIGHEST(C) 14.0 15.0 19.0 26.0 32.0 38.0 40.0 40.0 37.0 29.0 23.0 16.0 40.0 DAY 23 8 31 14 31 25 16 1 4 1 5 5 DIF. BETWEEN (MAX.-MIN.) (C) 8.7 7.4 8.6 10.2 10.9 11.3 11.3 11.1 11.3 10.9 10.2 7.9 10.0 MEAN DAILY TEMP. (MDT) (C) 5.5 3.1 6.5 15.2 21.2 27.7 31.1 30.0 26.0 18.2 10.2 6.0 16.7 COOLING DEG. DAYS(BASE 21 0C) 0.0 0.0 0.0 0.0 26.5 202.0 313.5 280.0 151.5 4.5 0.0 0.0 978.0 HEATING DEG. DAYS(BASE 18 0C) 389.0 432.0 356.0 89.5 0.5 0.0 0.0 0.0 0.0 32.5 233.0 373.0 1905.5 DEWPOINT (MEAN C) -3.2 -5.5 -1.3 2.0 4.7 5.9 10.0 4.3 4.7 3.3 -3.0 -1.8 1.7 MIXING RATIO (G/KG) 3.62 3.07 4.12 5.24 6.29 6.84 9.08 6.26 6.33 5.60 3.74 3.89 5.34 VAPOUR PRESSURE (HPA) 5.08 4.31 5.78 7.34 8.79 9.52 12.54 8.71 8.85 7.86 5.29 5.49 7.46 SATURATION DEF. (HPA) 3.80 3.32 4.31 10.58 17.13 29.24 34.85 34.96 25.74 13.68 7.14 3.68 15.70 RELATIVE HUMIDITY (MEAN %) 58 58 61 45 37 27 29 21 27 40 44 63 43 RELATIVE HUMIDITY (MAX. %) 76 78 80 65 55 39 39 31 36 55 58 76 57 RELATIVE HUMIDITY (MIN. %) 41 41 44 29 23 17 21 14 20 28 29 47 30 RELATIVE HUMIDITY (MEAN% 03UTC) 62 67 72 57 47 35 36 27 33 50 53 69 51 RELATIVE HUMIDITY (MEAN% 09UTC) 48 51 53 36 29 23 24 17 24 32 32 52 35 RELATIVE HUMIDITY (MEAN% 15UTC) 59 55 53 39 30 20 23 17 24 35 45 65 39 RH=0 => RELATIVE HUMIDITY < 0.5% AMOUNT OF PRECIPITATION MM. 29.0 51.7 52.6 37.3 28.0 13.2 0.0 0.0 0.0 16.0 14.0 46.7 288.5 DAYS WITH PRECIPITATION >=10 1 2 2 1 0 0 0 0 0 0 0 2 8 DAYS WITH PRECIPITATION >= 5 3 3 3 2 3 2 0 0 0 1 1 4 22 DAYS WITH PRECIPITATION >= 1 5 8 8 6 7 3 0 0 0 4 3 6 50 DAYS WITH PRECIPITATION 6 9 12 11 9 4 0 0 3 8 3 9 74 GREATEST DAILY PRECIPITATION 14.0 24.0 22.0 18.0 9.0 5.2 0.0 0.0 0.0 8.0 8.0 20.0 24.0 DAY 19 10 22 8 21 6 ** ** ** 31 27 31 DAY WITH THUNDER STORM 1 0 0 3 8 2 0 0 2 2 2 0 20 DAYS WITH SNOW OR SLEET 0 4 4 0 0 0 0 0 0 0 0 4 12 DAYS WITH DUST 6 5 12 2 7 7 9 4 2 3 4 5 66 WIND DIRECTION (PREVAILING) 45 45 45 45 45 45 225 225 45 45 225 45 45 PREVAILING WIND SPEED(KNOTS) 5.4 6.3 6.3 6.6 7.3 6.1 6.9 6.7 6.2 6.2 6.4 6.5 6.2 PREVAILING WIND PERCENT 9.7 11.6 11.3 14.2 17.7 15.4 15.7 16.1 20.4 12.9 9.2 5.2 12.5 CALMS PERCENT OF WIND 71.4 63.4 48.8 41.7 35.5 42.1 48.8 51.2 40.8 56.5 77.9 83.5 55.1 NO. OF WIND OBSERVATION 248 232 248 240 248 240 248 248 240 248 240 248 2928 VECTOR WIND DIRECTION (MEAN) 149 229 177 244 241 226 190 203 210 249 190 126 219 VECTOR WIND MAGNITUDE(KNOTS) 0.2 0.3 0.7 1.4 1.5 1.4 1.1 0.8 0.5 1.1 0.5 0.2 0.7 WIND STEADINESES (MEAN %) 11.1 10.7 20.6 28.6 24.2 30.4 34.4 27.6 11.9 33.3 38.5 22.2 21.2 WIND SPEED (MEAN KNOTS) 1.8 2.8 3.4 4.9 6.2 4.6 3.2 2.9 4.2 3.3 1.3 0.9 3.3 FASTEST WIND DIRECTION 240 270 260 250 270 260 240 240 240 270 210 30 270 FASTEST WIND SPEED (KNOTS) 20 30 15 25 35 30 15 12 26 24 18 18 35 DAY 15 14 2 13 7 17 4 7 23 16 28 22 DAYS WITH SKY CLEAR (0-2)/8 18 13 10 5 12 25 24 28 27 17 22 11 212 DAYS WITH P.CLOUDY (3-6)/8 9 8 9 14 15 3 6 3 3 9 6 9 94 DAYS WITH CLOUDY (7-8)/8 4 8 12 11 4 2 1 0 0 5 2 11 60 DAYS WITH VISIBILITY =< 2 KM 1 3 5 0 0 0 0 0 0 0 1 6 16 DURATION OF SUNSHINE HOURS 166.5 100.4 116.5 ****** 290.5 337.0 323.1 319.9 296.4 150.0 206.0 121.3 ****** ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION DOUSHAN TAPPEH (40753) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 35 42 N LONGITUDE 51 20 E DATA PROCESSING CENTER ELEVATION 1209.2 M MEANS AND EXTREMES FOR THE YEAR 1976 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL MEAN QFE PRESSURE IN HPA 879.6 879.7 879.0 878.7 877.9 876.1 871.7 875.6 878.5 880.8 886.2 884.0 879.0 MAX. QFE PRESSURE IN HPA 887.6 890.7 886.7 885.2 883.6 880.9 877.4 879.9 885.2 891.9 893.5 891.0 893.5 DAY-HOUR 1- 6 21- 6 27- 6 4- 9 1-21 21- 6 23- 6 27- 6 11- 6 31-18 12- 6 16- 6 MIN. QFE PRESSURE IN HPA 870.6 869.1 870.6 875.2 869.8 871.2 862.1 870.8 874.0 874.8 873.3 871.5 862.1 DAY-HOUR 6-21 10-18 17-12 9-12 27-15 30-15 18-18 30-15 2-15 17-12 28-15 10-15 MEAN QNH PRESSURE IN HPA 1016.8 1016.9 1016.1 1015.8 1014.9 1012.9 1008.0 1012.3 1015.6 1018.2 1024.2 1021.7 1016.1 MAX. QNH PRESSURE IN HPA 1025.8 1029.3 1024.8 1023.1 1021.3 1018.3 1014.4 1017.2 1023.1 1030.7 1032.5 1029.6 1032.5 DAY-HOUR 1- 6 21- 6 27- 6 4- 9 1-21 21- 6 23- 6 27- 6 11- 6 31-18 12- 6 16- 6 MIN. QNH PRESSURE IN HPA 1006.7 1005.0 1006.7 1011.9 1005.8 1007.4 997.1 1006.9 1010.5 1011.4 1009.7 1007.7 997.1 DAY-HOUR 6-21 10-18 17-12 9-12 27-15 30-15 18-18 30-15 2-15 17-12 28-15 10-15 MEAN QFF PRESSURE IN HPA 1018.0 1019.2 1016.4 1011.6 1007.7 1002.6 995.8 1001.0 1006.2 1012.5 1023.1 1022.7 1011.4 MAX. QFF PRESSURE IN HPA 1029.6 1033.8 1024.8 1022.1 1016.4 1008.0 1003.9 1007.2 1014.0 1031.7 1032.5 1029.9 1033.8 DAY-HOUR 1- 6 20- 6 3-18 4- 3 14- 9 14- 6 23- 3 27- 6 30- 6 31-18 14- 6 13- 6 MIN. QFF PRESSURE IN HPA 1006.8 1004.0 1003.7 1006.1 997.1 994.9 984.5 995.0 999.6 1004.6 1007.7 1007.8 984.5 DAY-HOUR 6-21 10-18 21-12 24-12 27-15 30-21 18-18 1-15 2-15 17-12 28-12 10-15 PRESSURE AT HOUR 0000 UTC. MEAN QFE PRESSURE IN HPA 879.7 879.5 878.7 878.4 877.8 876.3 871.9 875.6 878.4 880.5 886.0 883.9 878.9 MAX. QFE PRESSURE IN HPA 885.3 889.2 884.9 884.0 881.0 879.6 876.4 878.2 883.4 888.9 892.1 889.6 892.1 DAY 1 21 27 4 13 27 23 27 13 31 14 16 MIN. QFE PRESSURE IN HPA 871.6 869.7 871.5 875.4 872.0 874.3 867.7 872.6 874.7 875.7 873.9 874.5 867.7 DAY 7 11 22 18 28 3 4 31 1 18 29 11 MEAN QNH PRESSURE IN HPA 1017.0 1016.7 1015.9 1015.5 1014.8 1013.1 1008.1 1012.3 1015.5 1017.8 1024.0 1021.7 1016.0 MAX. QNH PRESSURE IN HPA 1023.2 1027.6 1022.8 1021.8 1018.4 1016.8 1013.2 1015.3 1021.1 1027.3 1030.9 1028.1 1030.9 DAY 1 21 27 4 13 27 23 27 13 31 14 16 MIN. QNH PRESSURE IN HPA 1007.8 1005.7 1007.7 1012.1 1008.3 1010.9 1003.4 1008.9 1011.3 1012.4 1010.4 1011.1 1003.4 DAY 7 11 22 18 28 3 4 31 1 18 29 11 MEAN QFF PRESSURE IN HPA 1017.8 1018.6 1016.0 1011.2 1007.5 1002.8 995.9 1000.8 1005.8 1011.7 1022.4 1022.3 1011.1 MAX. QFF PRESSURE IN HPA 1026.5 1031.6 1022.7 1021.1 1012.5 1006.3 1002.9 1005.2 1011.7 1027.6 1030.7 1027.8 1031.6 DAY 1 21 28 4 13 9 23 27 29 31 14 14 MIN. QFF PRESSURE IN HPA 1009.6 1005.7 1006.2 1007.1 999.4 999.3 991.6 995.9 1000.3 1006.2 1008.6 1011.2 991.6 DAY 7 11 22 19 28 30 4 1 1 18 29 11 PRESSURE AT HOUR 0300 UTC. MEAN QFE PRESSURE IN HPA 879.6 879.7 878.9 878.9 878.5 876.9 872.6 876.4 879.0 881.1 886.4 884.0 879.3 MAX. QFE PRESSURE IN HPA 885.3 889.2 885.2 884.7 881.9 880.0 877.1 878.8 883.8 890.0 892.6 889.6 892.6 DAY 1 21 27 4 13 21 23 27 13 31 13 16 MIN. QFE PRESSURE IN HPA 872.9 870.1 871.8 876.3 875.1 874.3 868.6 873.4 875.8 877.0 875.7 875.9 868.6 DAY 13 11 22 18 7 6 3 1 5 18 29 11 MEAN QNH PRESSURE IN HPA 1016.9 1017.0 1016.0 1016.0 1015.6 1013.8 1008.9 1013.2 1016.2 1018.5 1024.5 1021.8 1016.5 MAX. QNH PRESSURE IN HPA 1023.2 1027.6 1023.1 1022.6 1019.4 1017.3 1014.0 1015.9 1021.5 1028.5 1031.4 1028.1 1031.4 DAY 1 21 27 4 13 21 23 27 13 31 13 16 MIN. QNH PRESSURE IN HPA 1009.3 1006.1 1008.1 1013.1 1011.8 1010.9 1004.4 1009.8 1012.6 1013.9 1012.4 1012.7 1004.4 DAY 13 11 22 18 7 6 3 1 5 18 29 11 MEAN QFF PRESSURE IN HPA 1018.7 1019.7 1016.8 1012.3 1008.7 1003.6 996.9 1002.2 1007.3 1013.4 1024.1 1023.2 1012.2 MAX. QFF PRESSURE IN HPA 1027.3 1032.5 1023.9 1022.1 1013.3 1006.9 1003.9 1006.6 1013.7 1028.5 1032.2 1028.7 1032.5 DAY 1 20 28 4 13 14 23 27 30 31 14 14 MIN. QFF PRESSURE IN HPA 1012.3 1006.3 1006.9 1007.9 1004.1 999.5 992.3 996.5 1001.6 1008.6 1011.9 1013.5 992.3 DAY 13 11 21 19 27 30 3 1 5 18 29 11 ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION DOUSHAN TAPPEH (40753) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 35 42 N LONGITUDE 51 20 E DATA PROCESSING CENTER ELEVATION 1209.2 M MEANS AND EXTREMES FOR THE YEAR 1976 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 0600 UTC. MEAN QFE PRESSURE IN HPA 880.8 880.9 880.1 879.7 879.1 877.5 873.0 877.2 880.1 882.2 887.5 885.0 880.3 MAX. QFE PRESSURE IN HPA 887.6 890.7 886.7 885.1 882.4 880.9 877.4 879.9 885.2 891.7 893.5 891.0 893.5 DAY 1 21 27 4 2 21 23 27 11 31 12 16 MIN. QFE PRESSURE IN HPA 874.4 871.5 873.1 877.0 875.1 874.5 868.7 874.1 876.5 877.8 876.6 878.0 868.7 DAY 13 5 22 9 7 6 3 31 5 18 29 11 MEAN QNH PRESSURE IN HPA 1018.2 1018.3 1017.4 1016.9 1016.2 1014.5 1009.5 1014.1 1017.3 1019.8 1025.7 1022.9 1017.6 MAX. QNH PRESSURE IN HPA 1025.8 1029.3 1024.8 1023.0 1020.0 1018.3 1014.4 1017.2 1023.1 1030.4 1032.5 1029.6 1032.5 DAY 1 21 27 4 2 21 23 27 11 31 12 16 MIN. QNH PRESSURE IN HPA 1011.0 1007.7 1009.5 1013.9 1011.8 1011.1 1004.6 1010.6 1013.3 1014.8 1013.5 1015.0 1004.6 DAY 13 5 22 9 7 6 3 31 5 18 29 11 MEAN QFF PRESSURE IN HPA 1019.6 1020.8 1017.9 1012.7 1009.0 1004.1 997.3 1002.7 1007.8 1014.1 1024.7 1024.3 1012.9 MAX. QFF PRESSURE IN HPA 1029.6 1033.8 1024.7 1021.8 1014.0 1008.0 1003.6 1007.2 1014.0 1030.8 1032.5 1029.9 1033.8 DAY 1 20 3 4 2 14 23 27 30 31 14 13 MIN. QFF PRESSURE IN HPA 1013.4 1007.9 1008.5 1009.0 1003.7 999.1 992.4 997.8 1001.9 1008.4 1012.5 1015.4 992.4 DAY 13 5 21 18 27 30 3 1 5 18 29 10 PRESSURE AT HOUR 0900 UTC. MEAN QFE PRESSURE IN HPA 879.8 880.3 879.6 879.1 878.5 876.9 872.6 876.3 879.3 881.3 886.6 884.1 879.5 MAX. QFE PRESSURE IN HPA 886.9 890.0 885.9 885.2 883.5 880.7 876.5 879.1 884.4 891.7 892.6 890.2 892.6 DAY 1 20 27 4 14 26 22 26 11 31 12 16 MIN. QFE PRESSURE IN HPA 873.3 871.1 872.7 876.2 874.0 873.9 868.1 873.4 875.9 876.3 875.8 876.3 868.1 DAY 13 5 14 9 27 5 3 31 2 29 28 10 MEAN QNH PRESSURE IN HPA 1017.0 1017.6 1016.9 1016.3 1015.6 1013.8 1008.9 1013.1 1016.4 1018.7 1024.7 1021.9 1016.7 MAX. QNH PRESSURE IN HPA 1025.0 1028.5 1023.9 1023.1 1021.2 1018.1 1013.3 1016.3 1022.2 1030.4 1031.4 1028.7 1031.4 DAY 1 20 27 4 14 26 22 26 11 31 12 16 MIN. QNH PRESSURE IN HPA 1009.7 1007.3 1009.1 1013.0 1010.5 1010.4 1003.9 1009.8 1012.7 1013.1 1012.6 1013.1 1003.9 DAY 13 5 14 9 27 5 3 31 2 29 28 10 MEAN QFF PRESSURE IN HPA 1017.9 1019.7 1016.9 1011.8 1008.1 1003.3 996.6 1001.6 1006.7 1012.6 1023.1 1022.5 1011.7 MAX. QFF PRESSURE IN HPA 1028.3 1032.8 1023.9 1021.5 1016.4 1006.7 1003.2 1006.5 1012.4 1030.5 1031.1 1027.9 1032.8 DAY 1 20 3 4 14 14 22 26 29 31 13 20 MIN. QFF PRESSURE IN HPA 1011.5 1007.8 1006.8 1007.9 1001.9 998.6 991.7 996.5 1001.2 1006.8 1009.5 1012.9 991.7 DAY 13 5 21 17 27 30 3 1 2 17 28 10 PRESSURE AT HOUR 1200 UTC. MEAN QFE PRESSURE IN HPA 878.7 878.7 878.1 877.9 877.2 875.4 871.1 874.7 877.6 879.8 885.3 883.1 878.1 MAX. QFE PRESSURE IN HPA 885.4 888.5 884.3 884.1 880.9 879.3 875.8 877.7 881.6 890.0 891.4 889.7 891.4 DAY 1 20 27 3 2 26 22 26 11 31 1 16 MIN. QFE PRESSURE IN HPA 873.7 869.9 870.6 875.2 870.2 872.3 866.5 871.6 874.5 874.8 874.1 874.3 866.5 DAY 31 10 17 9 27 6 3 30 2 17 28 10 MEAN QNH PRESSURE IN HPA 1015.8 1015.8 1015.1 1015.0 1014.1 1012.1 1007.2 1011.3 1014.6 1017.0 1023.2 1020.8 1015.2 MAX. QNH PRESSURE IN HPA 1023.3 1026.8 1022.1 1021.9 1018.3 1016.5 1012.6 1014.7 1019.1 1028.5 1030.1 1028.2 1030.1 DAY 1 20 27 3 2 26 22 26 11 31 1 16 MIN. QNH PRESSURE IN HPA 1010.2 1005.9 1006.7 1011.9 1006.3 1008.6 1002.1 1007.8 1011.1 1011.4 1010.6 1010.9 1002.1 DAY 31 10 17 9 27 6 3 30 2 17 28 10 MEAN QFF PRESSURE IN HPA 1016.4 1017.8 1015.1 1010.6 1006.9 1001.8 994.9 999.9 1004.8 1011.0 1021.6 1021.4 1010.2 MAX. QFF PRESSURE IN HPA 1025.9 1030.9 1022.5 1020.8 1012.4 1005.5 1003.0 1004.9 1011.2 1028.6 1029.5 1027.4 1030.9 DAY 1 20 8 3 2 14 22 26 30 31 13 16 MIN. QFF PRESSURE IN HPA 1010.0 1006.6 1003.7 1006.1 997.4 996.6 989.6 995.4 999.7 1004.6 1007.7 1010.2 989.6 DAY 31 10 21 24 27 30 3 1 2 17 28 10 ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION DOUSHAN TAPPEH (40753) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 35 42 N LONGITUDE 51 20 E DATA PROCESSING CENTER ELEVATION 1209.2 M MEANS AND EXTREMES FOR THE YEAR 1976 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 1500 UTC. MEAN QFE PRESSURE IN HPA 879.1 879.1 878.3 878.1 876.9 874.6 870.3 874.1 877.3 879.9 885.4 883.4 878.0 MAX. QFE PRESSURE IN HPA 885.6 888.8 883.8 883.7 880.9 878.6 875.2 876.7 881.5 890.0 892.1 889.7 892.1 DAY 9 20 26 3 2 26 22 26 11 31 13 16 MIN. QFE PRESSURE IN HPA 872.9 869.8 871.9 875.7 869.8 871.2 865.6 870.8 874.0 874.8 873.3 871.5 865.6 DAY 6 10 21 1 27 30 3 30 2 17 28 10 MEAN QNH PRESSURE IN HPA 1016.2 1016.2 1015.3 1015.1 1013.8 1011.2 1006.3 1010.6 1014.2 1017.2 1023.3 1021.1 1015.1 MAX. QNH PRESSURE IN HPA 1023.6 1027.2 1021.5 1021.4 1018.3 1015.7 1011.9 1013.6 1019.0 1028.5 1030.9 1028.2 1030.9 DAY 9 20 26 3 2 26 22 26 11 31 13 16 MIN. QNH PRESSURE IN HPA 1009.3 1005.8 1008.2 1012.4 1005.8 1007.4 1001.1 1006.9 1010.5 1011.4 1009.7 1007.7 1001.1 DAY 6 10 21 1 27 30 3 30 2 17 28 10 MEAN QFF PRESSURE IN HPA 1017.8 1019.0 1016.0 1011.4 1006.8 1001.0 994.3 999.6 1005.3 1012.2 1022.9 1022.5 1010.7 MAX. QFF PRESSURE IN HPA 1026.8 1032.0 1022.9 1020.7 1012.7 1004.8 1002.2 1004.0 1011.5 1028.9 1031.4 1029.2 1032.0 DAY 1 20 8 3 2 14 22 26 29 31 13 13 MIN. QFF PRESSURE IN HPA 1011.1 1004.8 1004.9 1007.1 997.1 995.1 988.5 995.0 999.6 1005.8 1008.2 1007.8 988.5 DAY 6 10 21 17 27 30 3 1 2 17 28 10 PRESSURE AT HOUR 1800 UTC. MEAN QFE PRESSURE IN HPA 879.7 879.7 879.2 878.9 877.8 875.6 871.1 875.3 878.3 881.0 886.4 884.2 878.9 MAX. QFE PRESSURE IN HPA 885.8 889.1 885.5 884.5 881.8 878.2 876.3 878.0 882.6 891.9 893.1 890.2 893.1 DAY 1 20 26 3 13 14 22 26 11 31 14 16 MIN. QFE PRESSURE IN HPA 871.2 869.1 872.8 876.1 871.7 872.6 862.1 872.2 874.7 875.7 874.9 874.5 862.1 DAY 6 10 21 17 27 30 18 30 2 17 28 10 MEAN QNH PRESSURE IN HPA 1016.9 1016.9 1016.4 1016.0 1014.8 1012.3 1007.3 1012.0 1015.3 1018.4 1024.5 1022.0 1016.1 MAX. QNH PRESSURE IN HPA 1023.8 1027.5 1023.5 1022.3 1019.3 1015.3 1013.1 1015.0 1020.2 1030.7 1032.0 1028.7 1032.0 DAY 1 20 26 3 13 14 22 26 11 31 14 16 MIN. QNH PRESSURE IN HPA 1007.4 1005.0 1009.2 1012.9 1007.9 1008.9 997.1 1008.5 1011.3 1012.4 1011.5 1011.1 997.1 DAY 6 10 21 17 27 30 18 30 2 17 28 10 MEAN QFF PRESSURE IN HPA 1018.2 1019.4 1016.7 1011.7 1007.4 1002.0 995.1 1000.6 1005.9 1012.8 1023.5 1023.3 1011.4 MAX. QFF PRESSURE IN HPA 1027.4 1032.3 1024.8 1021.5 1012.8 1006.2 1002.9 1005.4 1012.5 1031.7 1032.2 1029.9 1032.3 DAY 1 20 3 3 13 14 22 26 29 31 14 13 MIN. QFF PRESSURE IN HPA 1008.2 1004.0 1007.5 1007.5 999.3 996.4 984.5 997.1 1000.3 1006.3 1009.2 1011.8 984.5 DAY 6 10 21 17 27 30 18 1 2 17 28 10 PRESSURE AT HOUR 2100 UTC. MEAN QFE PRESSURE IN HPA 879.7 879.7 879.1 878.8 877.8 875.9 871.6 875.5 878.5 881.1 886.0 884.0 879.0 MAX. QFE PRESSURE IN HPA 886.2 889.7 884.8 883.9 883.6 878.9 876.3 878.1 882.8 891.9 892.4 889.8 892.4 DAY 9 20 26 3 1 26 22 26 12 31 14 16 MIN. QFE PRESSURE IN HPA 870.6 869.2 871.4 876.0 871.0 871.8 867.2 872.5 875.2 875.7 873.9 874.5 867.2 DAY 6 10 21 17 27 30 3 30 2 17 28 10 MEAN QNH PRESSURE IN HPA 1017.0 1016.9 1016.3 1016.0 1014.8 1012.7 1007.8 1012.2 1015.6 1018.5 1024.0 1021.7 1016.1 MAX. QNH PRESSURE IN HPA 1024.2 1028.2 1022.7 1021.7 1021.3 1016.0 1013.1 1015.1 1020.4 1030.7 1031.2 1028.3 1031.2 DAY 9 20 26 3 1 26 22 26 12 31 14 16 MIN. QNH PRESSURE IN HPA 1006.7 1005.1 1007.6 1012.8 1007.2 1008.1 1002.9 1008.8 1011.9 1012.4 1010.4 1011.1 1002.9 DAY 6 10 21 17 27 30 3 30 2 17 28 10 MEAN QFF PRESSURE IN HPA 1017.8 1019.0 1016.3 1011.4 1007.3 1002.1 995.5 1000.7 1006.0 1012.5 1022.4 1022.3 1011.1 MAX. QFF PRESSURE IN HPA 1026.3 1032.6 1023.9 1021.0 1015.1 1006.6 1002.5 1005.1 1011.7 1031.1 1030.8 1028.1 1032.6 DAY 9 20 3 3 1 8 22 26 29 31 13 13 MIN. QFF PRESSURE IN HPA 1006.8 1004.9 1005.7 1006.9 998.4 994.9 990.4 996.9 1000.4 1005.8 1007.8 1011.5 990.4 DAY 6 10 21 18 27 30 3 1 4 17 28 10 ======================================================================================================================= TEHRAN 2002,MAY M.(S & A) STATION DOUSHAN TAPPEH (40753) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 35 42 N LONGITUDE 51 20 E DATA PROCESSING CENTER ELEVATION 1209.2 M MEANS AND EXTREMES FOR THE YEAR 1977 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AIR TEMPERATURE (C) -1.1 7.0 14.9 16.9 22.1 29.9 31.7 30.1 26.1 16.8 10.6 5.7 17.6 MINIMUN AIR TEMPERATURE (C) -3.5 2.0 9.9 12.4 17.2 23.7 26.3 24.6 20.9 12.9 6.7 2.8 13.0 DAYS WITH MINIMUM TEMP. >=21 0 0 0 0 4 25 31 29 18 0 0 0 107 DAYS WITH MINIMUM TEMP. <=-4 17 2 0 0 0 0 0 0 0 0 0 0 19 DAYS WITH FREEZING MIN.<= 0 29 8 0 0 0 0 0 0 0 0 0 9 46 TEMPERATURE RECORDS LOWEST(C) -8.0 -4.0 4.0 8.0 13.0 16.0 21.0 14.0 19.0 4.0 3.0 -3.0 -8.0 DAY 25 2 6 1 19 1 29 30 1 23 14 27 MAXIMUM AIR TEMPERATURE (C) 2.2 12.8 20.3 21.9 27.3 35.5 37.4 35.7 31.9 22.0 15.9 9.9 22.7 DAYS WITH MAXIMUM TEMP. >=30 0 0 0 0 4 28 31 28 30 4 0 0 125 DAYS WITH MAXIMUM TEMP. <= 0 6 0 0 0 0 0 0 0 0 0 0 0 6 TEMPERATURE RECORDS HIGHEST(C) 6.0 20.0 26.0 28.0 33.0 39.0 40.0 40.0 35.0 32.0 19.0 18.0 40.0 DAY 19 19 19 30 14 17 4 14 11 3 3 4 DIF. BETWEEN (MAX.-MIN.) (C) 5.7 10.8 10.4 9.5 10.1 11.8 11.1 11.1 11.0 9.1 9.2 7.1 9.7 MEAN DAILY TEMP. (MDT) (C) -0.7 7.4 15.1 17.1 22.3 29.6 31.8 30.1 26.4 17.5 11.3 6.3 17.9 COOLING DEG. DAYS(BASE 21 0C) 0.0 0.0 0.5 4.5 49.5 257.5 335.0 283.5 161.0 20.5 0.0 0.0 1112.0 HEATING DEG. DAYS(BASE 18 0C) 578.5 297.0 100.0 53.5 0.5 0.0 0.0 0.0 0.0 81.5 200.5 361.5 1673.0 DEWPOINT (MEAN C) -5.0 -1.2 -1.8 2.5 5.4 7.6 8.5 7.1 3.2 4.3 1.8 -0.8 2.6 MIXING RATIO (G/KG) 3.13 4.06 4.01 5.52 6.66 7.75 8.19 7.55 5.64 6.10 5.07 4.19 5.65 VAPOUR PRESSURE (HPA) 4.41 5.72 5.64 7.71 9.30 10.74 11.31 10.49 7.90 8.57 7.13 5.90 7.90 SATURATION DEF. (HPA) 1.31 4.93 11.87 12.19 17.99 32.68 36.42 33.54 26.69 11.82 5.97 3.61 16.59 RELATIVE HUMIDITY (MEAN %) 77 59 34 43 37 27 25 26 24 49 56 65 44 RELATIVE HUMIDITY (MAX. %) 91 74 49 60 52 39 35 38 32 60 68 80 57 RELATIVE HUMIDITY (MIN. %) 59 44 22 28 24 18 18 18 17 37 42 50 31 RELATIVE HUMIDITY (MEAN% 03UTC) 80 68 45 53 47 35 32 30 28 56 62 70 51 RELATIVE HUMIDITY (MEAN% 09UTC) 70 48 27 35 29 22 23 21 20 41 47 56 37 RELATIVE HUMIDITY (MEAN% 15UTC) 81 56 29 35 31 20 20 21 24 49 55 62 40 RH=0 => RELATIVE HUMIDITY < 0.5% AMOUNT OF PRECIPITATION MM. 59.3 19.5 8.5 52.7 34.3 1.0 6.0 14.0 0.0 47.3 21.0 41.8 305.4 DAYS WITH PRECIPITATION >=10 1 1 0 1 1 0 0 1 0 1 0 1 7 DAYS WITH PRECIPITATION >= 5 5 2 1 2 2 0 1 1 0 3 3 3 23 DAYS WITH PRECIPITATION >= 1 14 3 2 6 8 0 1 1 0 8 5 6 54 DAYS WITH PRECIPITATION 15 5 6 10 14 3 2 2 0 12 5 8 82 GREATEST DAILY PRECIPITATION 11.0 10.0 6.0 33.0 19.0 0.5 6.0 14.0 0.0 20.0 7.0 23.0 33.0 DAY 28 7 27 7 24