STATION BAFGH (40820) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 31 36 N LONGITUDE 55 26 E DATA PROCESSING CENTER ELEVATION 991.4 M MEANS AND EXTREMES FOR THE YEAR 1993 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AIR TEMPERATURE (C) 6.7 12.4 15.4 23.6 28.9 34.2 34.9 33.2 30.3 21.5 16.4 11.2 22.4 MINIMUN AIR TEMPERATURE (C) 0.8 5.4 7.0 13.5 18.6 21.9 22.9 20.1 16.8 9.7 7.2 1.0 12.1 DAYS WITH MINIMUM TEMP. >=21 0 0 0 0 10 18 23 14 2 0 1 0 68 DAYS WITH MINIMUM TEMP. <=-4 2 0 0 0 0 0 0 0 0 0 0 0 2 DAYS WITH FREEZING MIN.<= 0 17 2 1 0 0 0 0 0 0 0 2 13 35 TEMPERATURE RECORDS LOWEST(C) -4.6 -2.6 0.0 7.4 13.2 16.8 15.4 12.8 13.0 3.4 -0.4 -3.4 -4.6 DAY 1 18 25 1 10 7 31 4 18 9 21 8 MAXIMUM AIR TEMPERATURE (C) 11.5 17.8 20.5 28.7 34.4 40.0 40.3 39.6 36.8 28.0 22.9 18.1 28.2 DAYS WITH MAXIMUM TEMP. >=30 0 0 0 10 27 30 31 31 30 4 1 0 164 DAYS WITH MAXIMUM TEMP. <= 0 0 0 0 0 0 0 0 0 0 0 0 0 0 TEMPERATURE RECORDS HIGHEST(C) 23.8 23.8 28.4 34.6 41.0 44.4 44.2 42.6 39.6 37.4 30.0 23.4 44.4 DAY 28 28 19 20 27 21 6 14 14 1 2 30 DIF. BETWEEN (MAX.-MIN.) (C) 10.7 12.4 13.5 15.2 15.8 18.1 17.4 19.5 20.0 18.3 15.7 17.1 16.1 MEAN DAILY TEMP. (MDT) (C) 6.1 11.6 13.8 21.1 26.5 30.9 31.6 29.9 26.8 18.9 15.1 9.6 20.2 COOLING DEG. DAYS(BASE 21 0C) 0.0 0.0 0.2 30.4 170.4 298.3 329.8 274.5 174.1 20.0 10.9 0.0 1308.6 HEATING DEG. DAYS(BASE 18 0C) 367.7 179.8 140.3 1.1 0.0 0.0 0.0 0.0 0.0 28.0 122.4 261.8 1101.1 DEWPOINT (MEAN C) -0.5 0.5 -1.4 3.3 5.0 0.7 2.0 -1.3 -4.7 -4.8 -1.3 -5.5 -0.7 MIXING RATIO (G/KG) 4.21 4.72 4.23 5.62 6.31 4.80 5.15 4.08 3.11 3.11 4.08 2.88 4.36 VAPOUR PRESSURE (HPA) 6.09 6.80 6.09 8.06 9.04 6.86 7.35 5.85 4.47 4.51 5.89 4.18 6.27 SATURATION DEF. (HPA) 4.45 8.39 12.47 22.41 32.90 49.55 50.89 48.16 41.29 22.96 14.44 9.90 26.48 RELATIVE HUMIDITY (MEAN %) 66 50 37 30 25 14 14 13 12 19 33 34 29 RELATIVE HUMIDITY (MAX. %) 84 76 61 51 43 25 24 26 23 31 50 54 46 RELATIVE HUMIDITY (MIN. %) 51 30 23 19 16 8 9 7 6 11 21 21 19 RELATIVE HUMIDITY (MEAN% 03UTC) 83 76 58 50 43 25 24 26 23 31 49 54 45 RELATIVE HUMIDITY (MEAN% 09UTC) 59 40 28 22 21 11 11 9 8 14 26 27 23 RELATIVE HUMIDITY (MEAN% 15UTC) 61 45 32 23 18 10 10 8 8 16 30 30 24 RH=0 => RELATIVE HUMIDITY < 0.5% AMOUNT OF PRECIPITATION MM. 38.0 22.9 13.2 0.8 1.3 0.0 0.0 0.0 0.0 0.0 0.0 0.0 76.2 DAYS WITH PRECIPITATION >=10 0 1 0 0 0 0 0 0 0 0 0 0 1 DAYS WITH PRECIPITATION >= 5 4 2 0 0 0 0 0 0 0 0 0 0 6 DAYS WITH PRECIPITATION >= 1 7 2 4 0 1 0 0 0 0 0 0 0 14 DAYS WITH PRECIPITATION 8 6 6 2 2 0 0 0 0 0 0 0 24 GREATEST DAILY PRECIPITATION 9.0 13.0 4.0 0.8 1.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 13.0 DAY 5 5 9 25 4 ** ** ** ** ** ** ** DAY WITH THUNDER STORM 0 0 1 0 1 0 0 0 0 0 0 0 2 DAYS WITH SNOW OR SLEET 3 0 0 0 0 0 0 0 0 0 0 0 3 DAYS WITH DUST 0 2 3 0 1 1 1 0 0 0 2 0 10 WIND DIRECTION (PREVAILING) 135 135 135 135 315 315 360 315 315 315 315 135 315 PREVAILING WIND SPEED(KNOTS) 6.6 7.1 7.1 6.0 8.4 8.0 9.1 9.9 6.0 6.4 8.2 5.9 8.2 PREVAILING WIND PERCENT 20.0 26.4 16.1 13.3 20.6 22.0 24.5 20.0 11.3 14.9 8.7 18.7 12.2 CALMS PERCENT OF WIND 58.1 42.9 47.1 54.0 54.8 53.3 40.6 52.9 48.7 65.6 68.0 73.5 55.0 NO. OF WIND OBSERVATION 155 140 155 150 155 150 155 155 150 154 150 155 1824 VECTOR WIND DIRECTION (MEAN) 148 162 204 185 301 335 351 345 352 328 212 127 323 VECTOR WIND MAGNITUDE(KNOTS) 0.5 2.4 1.4 1.3 1.5 2.3 4.0 3.0 1.2 1.0 0.9 0.6 0.6 WIND STEADINESES (MEAN %) 19.2 60.0 31.1 43.3 45.5 65.7 78.4 76.9 38.7 45.5 36.0 37.5 18.2 WIND SPEED (MEAN KNOTS) 2.6 4.0 4.5 3.0 3.3 3.5 5.1 3.9 3.1 2.2 2.5 1.6 3.3 FASTEST WIND DIRECTION 160 290 290 320 320 320 350 320 10 340 170 330 290 FASTEST WIND SPEED (KNOTS) 14 23 31 16 17 23 23 19 16 12 14 12 31 DAY 16 23 22 3 9 22 30 2 15 6 13 6 DAYS WITH SKY CLEAR (0-2)/8 12 13 15 11 17 28 31 30 28 24 16 23 248 DAYS WITH P.CLOUDY (3-6)/8 7 8 10 14 12 2 0 1 2 7 11 6 80 DAYS WITH CLOUDY (7-8)/8 12 7 6 5 2 0 0 0 0 0 3 2 37 DAYS WITH VISIBILITY =< 2 KM 1 1 1 0 0 0 0 0 0 0 1 0 4 DURATION OF SUNSHINE HOURS 150.4 181.3 209.6 246.1 309.1 374.9 385.4 362.2 332.3 294.5 222.5 ****** ****** ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION BAFGH (40820) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 31 36 N LONGITUDE 55 26 E DATA PROCESSING CENTER ELEVATION 991.4 M MEANS AND EXTREMES FOR THE YEAR 1993 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL MEAN QFE PRESSURE IN HPA 906.2 904.6 903.2 900.7 899.9 895.8 894.7 897.2 899.7 907.4 905.8 907.6 901.9 MAX. QFE PRESSURE IN HPA 913.3 911.6 910.8 909.7 906.5 904.0 900.8 902.8 905.9 914.7 914.0 915.8 915.8 DAY-HOUR 8- 6 8- 6 17- 6 1- 6 9- 6 23- 6 28- 6 26- 6 23- 6 17- 6 30- 6 27- 6 MIN. QFE PRESSURE IN HPA 899.4 896.6 893.4 892.9 892.0 890.1 886.6 888.6 894.3 897.8 897.3 898.8 886.6 DAY-HOUR 31-12 23-12 21-15 13-12 29-15 15-15 13-15 12-15 14-15 3-15 14-12 4-15 MEAN QNH PRESSURE IN HPA 1020.1 1018.4 1016.9 1014.1 1013.2 1008.7 1007.5 1010.3 1013.0 1021.4 1019.7 1021.7 1015.4 MAX. QNH PRESSURE IN HPA 1028.0 1026.1 1025.2 1024.0 1020.5 1017.7 1014.2 1016.4 1019.8 1029.5 1028.7 1030.7 1030.7 DAY-HOUR 8- 6 8- 6 17- 6 1- 6 9- 6 23- 6 28- 6 26- 6 23- 6 17- 6 30- 6 27- 6 MIN. QNH PRESSURE IN HPA 1012.7 1009.6 1006.0 1005.5 1004.5 1002.4 998.6 1000.8 1007.0 1010.9 1010.3 1012.0 998.6 DAY-HOUR 31-12 23-12 21-15 13-12 29-15 15-15 13-15 12-15 14-15 3-15 14-12 4-15 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 906.5 905.0 903.9 901.9 901.6 897.4 896.1 898.7 901.0 908.5 906.9 908.5 903.0 MAX. QFE PRESSURE IN HPA 912.5 910.2 909.0 907.7 905.7 903.0 900.6 902.0 904.8 913.6 912.4 914.3 914.3 DAY 8 8 18 1 9 23 28 26 23 17 21 27 MIN. QFE PRESSURE IN HPA 900.1 900.0 896.1 895.9 897.1 894.6 890.9 893.2 897.3 901.4 898.2 903.7 890.9 DAY 17 23 22 13 29 13 14 12 29 3 14 5 MEAN QNH PRESSURE IN HPA 1020.5 1018.8 1017.6 1015.4 1015.0 1010.5 1009.0 1011.9 1014.4 1022.6 1020.9 1022.7 1016.6 MAX. QNH PRESSURE IN HPA 1027.1 1024.5 1023.2 1021.8 1019.6 1016.6 1014.0 1015.5 1018.6 1028.3 1027.0 1029.1 1029.1 DAY 8 8 18 1 9 23 28 26 23 17 21 27 MIN. QNH PRESSURE IN HPA 1013.4 1013.3 1009.0 1008.8 1010.1 1007.4 1003.3 1005.8 1010.3 1014.9 1011.3 1017.4 1003.3 DAY 17 23 22 13 29 13 14 12 29 3 14 5 MEAN QFF PRESSURE IN HPA 1022.3 1018.2 1015.9 1010.4 1007.9 1001.5 999.7 1003.5 1007.4 1019.2 1019.2 1023.6 1012.4 MAX. QFF PRESSURE IN HPA 1030.0 1026.2 1022.8 1019.1 1014.4 1009.2 1005.5 1008.8 1012.8 1026.7 1028.3 1029.7 1030.0 DAY 8 8 17 1 9 23 28 26 23 9 30 7 MIN. QFF PRESSURE IN HPA 1011.7 1011.0 1006.3 1003.9 1001.5 997.1 992.8 996.1 1002.4 1008.7 1006.3 1017.7 992.8 DAY 31 21 22 13 29 19 14 23 15 3 14 28 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION BAFGH (40820) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 31 36 N LONGITUDE 55 26 E DATA PROCESSING CENTER ELEVATION 991.4 M MEANS AND EXTREMES FOR THE YEAR 1993 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 0600 UTC. MEAN QFE PRESSURE IN HPA 907.5 906.3 905.3 902.9 901.9 897.8 896.5 899.2 901.8 909.9 908.0 909.9 903.9 MAX. QFE PRESSURE IN HPA 913.3 911.6 910.8 909.7 906.5 904.0 900.8 902.8 905.9 914.7 914.0 915.8 915.8 DAY 8 8 17 1 9 23 28 26 23 17 30 27 MIN. QFE PRESSURE IN HPA 902.6 899.8 896.5 896.9 896.2 894.6 891.2 893.4 898.4 902.5 899.5 904.8 891.2 DAY 31 4 22 13 29 13 13 12 14 3 14 5 MEAN QNH PRESSURE IN HPA 1021.6 1020.2 1019.2 1016.5 1015.5 1010.9 1009.4 1012.5 1015.3 1024.2 1022.1 1024.2 1017.6 MAX. QNH PRESSURE IN HPA 1028.0 1026.1 1025.2 1024.0 1020.5 1017.7 1014.2 1016.4 1019.8 1029.5 1028.7 1030.7 1030.7 DAY 8 8 17 1 9 23 28 26 23 17 30 27 MIN. QNH PRESSURE IN HPA 1016.2 1013.1 1009.5 1009.9 1009.1 1007.4 1003.6 1006.0 1011.6 1016.1 1012.8 1018.6 1003.6 DAY 31 4 22 13 29 13 13 12 14 3 14 5 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 906.5 905.0 903.4 901.1 900.4 896.1 894.9 897.5 899.8 907.4 905.6 907.6 902.1 MAX. QFE PRESSURE IN HPA 912.8 910.5 909.3 908.0 904.8 902.2 899.8 900.9 903.9 912.4 912.6 913.6 913.6 DAY 6 8 17 1 9 23 27 26 16 17 30 26 MIN. QFE PRESSURE IN HPA 901.5 898.3 894.6 895.3 894.8 893.2 889.5 891.8 896.3 900.2 897.6 901.7 889.5 DAY 31 23 22 13 29 13 13 12 3 3 14 5 MEAN QNH PRESSURE IN HPA 1020.4 1018.9 1017.1 1014.5 1013.7 1009.1 1007.7 1010.5 1013.1 1021.4 1019.5 1021.7 1015.6 MAX. QNH PRESSURE IN HPA 1027.4 1024.9 1023.6 1022.1 1018.6 1015.7 1013.1 1014.3 1017.6 1027.0 1027.2 1028.3 1028.3 DAY 6 8 17 1 9 23 27 26 16 17 30 26 MIN. QNH PRESSURE IN HPA 1015.0 1011.4 1007.4 1008.1 1007.6 1005.8 1001.8 1004.3 1009.2 1013.5 1010.7 1015.2 1001.8 DAY 31 23 22 13 29 13 13 12 3 3 14 5 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 905.1 903.3 901.6 899.1 898.2 894.2 893.2 895.6 898.0 905.6 903.8 905.8 900.3 MAX. QFE PRESSURE IN HPA 912.0 907.7 907.7 904.7 902.8 900.0 898.2 899.0 902.6 910.4 909.8 911.5 912.0 DAY 7 8 17 1 9 23 27 25 23 16 30 26 MIN. QFE PRESSURE IN HPA 899.4 896.6 893.4 892.9 892.4 890.8 887.5 889.2 894.6 897.9 897.3 898.9 887.5 DAY 31 23 22 13 29 13 13 12 3 3 14 4 MEAN QNH PRESSURE IN HPA 1019.0 1017.0 1015.0 1012.3 1011.3 1006.9 1005.8 1008.5 1011.1 1019.4 1017.5 1019.7 1013.6 MAX. QNH PRESSURE IN HPA 1026.5 1021.8 1021.8 1018.5 1016.4 1013.3 1011.3 1012.2 1016.2 1024.8 1024.1 1026.0 1026.5 DAY 7 8 17 1 9 23 27 25 23 16 30 26 MIN. QNH PRESSURE IN HPA 1012.7 1009.6 1006.0 1005.5 1004.9 1003.2 999.5 1001.4 1007.4 1011.0 1010.3 1012.1 999.5 DAY 31 23 22 13 29 13 13 12 3 3 14 4 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION BAFGH (40820) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 31 36 N LONGITUDE 55 26 E DATA PROCESSING CENTER ELEVATION 991.4 M MEANS AND EXTREMES FOR THE YEAR 1993 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 1500 UTC. MEAN QFE PRESSURE IN HPA 905.4 903.6 901.9 898.6 897.7 893.5 892.8 895.2 898.2 905.8 904.6 906.5 900.3 MAX. QFE PRESSURE IN HPA 912.3 908.7 908.2 904.0 902.8 900.0 898.2 899.0 903.2 911.0 910.0 912.6 912.6 DAY 7 7 17 17 9 23 27 25 23 8 22 26 MIN. QFE PRESSURE IN HPA 900.4 898.4 893.4 893.2 892.0 890.1 886.6 888.6 894.3 897.8 898.5 898.8 886.6 DAY 31 21 21 12 29 15 13 12 14 3 10 4 MEAN QNH PRESSURE IN HPA 1019.2 1017.2 1015.4 1011.8 1010.7 1006.2 1005.4 1008.0 1011.3 1019.7 1018.3 1020.4 1013.6 MAX. QNH PRESSURE IN HPA 1026.9 1022.9 1022.3 1017.7 1016.4 1013.3 1011.3 1012.2 1016.8 1025.4 1024.3 1027.2 1027.2 DAY 7 7 17 17 9 23 27 25 23 8 22 26 MIN. QNH PRESSURE IN HPA 1013.8 1011.6 1006.0 1005.8 1004.5 1002.4 998.6 1000.8 1007.0 1010.9 1011.7 1012.0 998.6 DAY 31 21 21 12 29 15 13 12 14 3 10 4 MEAN QFF PRESSURE IN HPA 1021.0 1016.6 1013.5 1006.8 1003.6 997.2 996.1 999.7 1004.3 1016.2 1016.7 1021.2 1009.4 MAX. QFF PRESSURE IN HPA 1030.2 1024.3 1022.3 1014.1 1011.4 1005.9 1002.9 1004.5 1010.9 1024.3 1026.4 1027.7 1030.2 DAY 7 7 17 1 9 23 27 25 23 8 30 6 MIN. QFF PRESSURE IN HPA 1012.2 1007.7 1001.2 1000.1 996.9 992.6 987.9 991.7 998.7 1004.9 1007.8 1012.9 987.9 DAY 31 21 21 20 29 13 13 12 14 3 13 4 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 2006,MAY M.(S & A) STATION BAFGH (40820) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 31 36 N LONGITUDE 55 26 E DATA PROCESSING CENTER ELEVATION 991.4 M MEANS AND EXTREMES FOR THE YEAR 1994 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AIR TEMPERATURE (C) 11.2 12.3 18.7 24.2 29.2 34.8 36.9 35.8 26.8 22.5 20.3 10.3 23.6 MINIMUN AIR TEMPERATURE (C) 1.8 0.9 8.6 12.5 18.3 22.5 23.8 22.2 14.2 12.9 11.5 1.3 12.5 DAYS WITH MINIMUM TEMP. >=21 0 0 0 1 5 23 27 18 3 1 0 0 78 DAYS WITH MINIMUM TEMP. <=-4 3 1 0 0 0 0 0 0 0 0 0 10 14 DAYS WITH FREEZING MIN.<= 0 14 12 0 0 0 0 0 0 0 0 0 16 42 TEMPERATURE RECORDS LOWEST(C) -4.2 -5.2 2.4 1.4 12.6 14.6 19.8 17.2 6.0 4.2 3.6 -10.8 -10.8 DAY 10 20 5 6 9 9 5 22 22 13 13 8 MAXIMUM AIR TEMPERATURE (C) 17.3 18.8 24.4 29.6 34.6 40.7 43.0 42.3 33.3 28.3 25.8 16.7 29.6 DAYS WITH MAXIMUM TEMP. >=30 0 0 1 12 28 30 31 31 25 11 0 0 169 DAYS WITH MAXIMUM TEMP. <= 0 0 0 0 0 0 0 0 0 0 0 0 0 0 TEMPERATURE RECORDS HIGHEST(C) 26.4 26.4 30.8 37.4 38.2 45.6 45.6 45.6 40.4 34.4 29.8 26.2 45.6 DAY 3 1 31 26 25 26 19 3 3 2 4 3 DIF. BETWEEN (MAX.-MIN.) (C) 15.5 17.9 15.8 17.1 16.3 18.2 19.2 20.1 19.1 15.4 14.3 15.4 17.1 MEAN DAILY TEMP. (MDT) (C) 9.6 9.8 16.5 21.1 26.5 31.6 33.4 32.2 23.8 20.6 18.7 9.0 21.1 COOLING DEG. DAYS(BASE 21 0C) 0.0 0.0 2.0 53.7 169.1 318.1 384.6 348.7 98.6 30.9 9.9 0.0 1415.6 HEATING DEG. DAYS(BASE 18 0C) 262.1 228.8 61.8 16.4 0.0 0.0 0.0 0.0 1.0 11.5 27.3 284.4 893.3 DEWPOINT (MEAN C) -4.1 -7.4 -1.5 -1.7 0.1 2.8 5.0 3.9 2.0 4.7 -1.0 -5.2 -0.2 MIXING RATIO (G/KG) 3.31 2.63 4.15 4.02 4.58 5.39 6.35 5.85 5.05 6.21 4.22 3.15 4.58 VAPOUR PRESSURE (HPA) 4.78 3.79 5.97 5.79 6.57 7.67 9.00 8.32 7.26 8.95 6.10 4.56 6.56 SATURATION DEF. (HPA) 9.46 11.75 16.77 26.54 35.82 50.47 56.35 53.87 30.48 19.71 18.70 9.39 28.28 RELATIVE HUMIDITY (MEAN %) 39 30 31 21 18 15 16 15 22 35 27 35 25 RELATIVE HUMIDITY (MAX. %) 60 55 56 39 36 26 28 25 33 56 43 50 42 RELATIVE HUMIDITY (MIN. %) 24 16 18 12 10 9 9 9 15 23 17 24 16 RELATIVE HUMIDITY (MEAN% 03UTC) 57 55 54 39 35 26 28 25 33 56 43 49 42 RELATIVE HUMIDITY (MEAN% 09UTC) 32 21 21 16 13 12 12 12 18 27 20 30 20 RELATIVE HUMIDITY (MEAN% 15UTC) 35 21 25 15 12 10 11 11 18 30 25 30 20 RH=0 => RELATIVE HUMIDITY < 0.5% AMOUNT OF PRECIPITATION MM. 10.1 0.6 5.4 0.5 4.0 0.0 0.0 0.0 0.0 2.0 0.2 0.2 23.0 DAYS WITH PRECIPITATION >=10 0 0 0 0 0 0 0 0 0 0 0 0 0 DAYS WITH PRECIPITATION >= 5 1 0 0 0 0 0 0 0 0 0 0 0 1 DAYS WITH PRECIPITATION >= 1 2 0 1 0 2 0 0 0 0 1 0 0 6 DAYS WITH PRECIPITATION 3 1 6 2 2 0 0 0 0 1 1 1 17 GREATEST DAILY PRECIPITATION 6.0 0.6 3.0 0.3 3.0 0.0 0.0 0.0 0.0 2.0 0.2 0.2 6.0 DAY 25 19 11 18 6 ** ** ** ** 22 18 4 DAY WITH THUNDER STORM 0 0 0 0 0 0 0 0 0 0 0 0 0 DAYS WITH SNOW OR SLEET 0 0 0 0 0 0 0 0 0 0 0 0 0 DAYS WITH DUST 2 1 3 3 4 1 2 0 0 1 1 0 18 WIND DIRECTION (PREVAILING) 135 135 135 315 315 315 315 45 315 315 135 135 315 PREVAILING WIND SPEED(KNOTS) 6.3 8.5 6.7 6.0 6.9 7.4 6.8 7.2 9.1 8.5 5.6 7.8 7.6 PREVAILING WIND PERCENT 23.2 14.3 23.2 14.7 14.2 18.0 16.8 11.0 25.3 14.2 28.7 14.8 12.2 CALMS PERCENT OF WIND 59.4 53.6 54.8 55.3 56.1 56.7 47.1 65.8 50.7 66.5 44.7 64.5 56.3 NO. OF WIND OBSERVATION 155 140 155 150 155 150 155 155 150 155 150 155 1825 VECTOR WIND DIRECTION (MEAN) 153 233 163 307 308 328 356 355 337 326 157 175 329 VECTOR WIND MAGNITUDE(KNOTS) 0.9 0.4 2.7 0.5 0.5 2.4 2.9 1.7 3.4 1.1 2.6 1.3 0.4 WIND STEADINESES (MEAN %) 33.3 11.1 75.0 16.7 16.7 72.7 76.3 73.9 81.0 45.8 76.5 44.8 12.5 WIND SPEED (MEAN KNOTS) 2.7 3.6 3.6 3.0 3.0 3.3 3.8 2.3 4.2 2.4 3.4 2.9 3.2 FASTEST WIND DIRECTION 150 270 180 340 320 280 320 330 340 330 180 140 180 FASTEST WIND SPEED (KNOTS) 23 19 31 19 19 16 16 16 16 17 19 14 31 DAY 16 12 12 18 16 5 10 3 1 16 17 3 DAYS WITH SKY CLEAR (0-2)/8 21 24 15 19 16 30 31 30 27 20 16 22 271 DAYS WITH P.CLOUDY (3-6)/8 6 4 12 8 15 0 0 1 3 9 9 6 73 DAYS WITH CLOUDY (7-8)/8 4 0 4 3 0 0 0 0 0 2 5 3 21 DAYS WITH VISIBILITY =< 2 KM 1 0 3 0 0 2 0 0 0 0 0 0 6 DURATION OF SUNSHINE HOURS ****** ****** ****** ****** 200.3 359.3 375.3 366.3 321.7 281.7 203.6 231.9 ****** ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION BAFGH (40820) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 31 36 N LONGITUDE 55 26 E DATA PROCESSING CENTER ELEVATION 991.4 M MEANS AND EXTREMES FOR THE YEAR 1994 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL MEAN QFE PRESSURE IN HPA 905.5 901.5 901.9 902.1 899.6 893.2 891.1 893.4 902.6 906.4 904.7 907.0 900.7 MAX. QFE PRESSURE IN HPA 915.8 911.3 909.1 913.5 905.8 900.9 896.2 899.0 911.0 914.7 911.9 916.5 916.5 DAY-HOUR 10- 6 20- 6 18- 6 5- 6 15- 6 9- 3 2- 6 16- 6 23- 6 10- 6 2- 6 8- 6 MIN. QFE PRESSURE IN HPA 894.4 891.1 890.8 894.1 890.3 885.8 885.3 886.8 892.9 898.6 896.6 893.7 885.3 DAY-HOUR 16-12 12-12 12-12 2-12 1-15 28-15 8-12 2-15 1-12 2-12 26- 3 4-12 MEAN QNH PRESSURE IN HPA 1019.4 1014.9 1015.3 1015.6 1012.8 1005.8 1003.5 1006.1 1016.2 1020.3 1018.5 1021.0 1014.1 MAX. QNH PRESSURE IN HPA 1030.7 1025.8 1023.3 1028.2 1019.7 1014.3 1009.1 1012.2 1025.4 1029.5 1026.4 1031.5 1031.5 DAY-HOUR 10- 6 20- 6 18- 6 5- 6 15- 6 9- 3 2- 6 16- 6 23- 6 10- 6 2- 6 8- 6 MIN. QNH PRESSURE IN HPA 1007.1 1003.5 1003.2 1006.8 1002.6 997.7 997.1 998.8 1005.5 1011.8 1009.6 1006.4 997.1 DAY-HOUR 16-12 12-12 12-12 2-12 1-15 28-15 8-12 2-15 1-12 2-12 26- 3 4-12 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 906.0 902.1 902.9 903.5 901.1 894.8 892.7 894.9 903.9 907.6 905.7 907.6 901.9 MAX. QFE PRESSURE IN HPA 914.7 909.9 908.2 911.8 905.4 900.9 896.2 898.2 910.3 913.5 910.3 915.5 915.5 DAY 10 20 18 5 15 9 14 16 23 10 2 8 MIN. QFE PRESSURE IN HPA 898.9 893.3 895.9 897.7 897.2 889.4 888.7 889.9 895.5 903.0 896.6 894.6 888.7 DAY 16 12 12 3 1 29 8 3 1 3 26 4 MEAN QNH PRESSURE IN HPA 1020.0 1015.6 1016.5 1017.2 1014.5 1007.5 1005.3 1007.7 1017.6 1021.6 1019.6 1021.7 1015.4 MAX. QNH PRESSURE IN HPA 1029.5 1024.2 1022.3 1026.3 1019.3 1014.3 1009.1 1011.3 1024.7 1028.2 1024.7 1030.4 1030.4 DAY 10 20 18 5 15 9 14 16 23 10 2 8 MIN. QNH PRESSURE IN HPA 1012.1 1005.9 1008.8 1010.8 1010.2 1001.6 1000.9 1002.2 1008.4 1016.6 1009.6 1007.4 1000.9 DAY 16 12 12 3 1 29 8 3 1 3 26 4 MEAN QFF PRESSURE IN HPA 1020.3 1015.4 1013.6 1012.2 1007.3 998.2 995.3 998.4 1011.8 1017.2 1016.2 1022.3 1010.7 MAX. QFF PRESSURE IN HPA 1032.3 1027.8 1021.1 1025.1 1012.2 1006.9 999.8 1003.2 1021.2 1026.3 1022.0 1036.5 1036.5 DAY 10 20 18 6 8 9 14 24 23 10 20 8 MIN. QFF PRESSURE IN HPA 1010.9 1003.8 1005.2 1003.8 1002.9 991.8 989.6 992.3 999.7 1009.1 1004.0 1002.0 989.6 DAY 17 12 12 26 1 29 8 3 1 2 26 4 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION BAFGH (40820) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 31 36 N LONGITUDE 55 26 E DATA PROCESSING CENTER ELEVATION 991.4 M MEANS AND EXTREMES FOR THE YEAR 1994 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 0600 UTC. MEAN QFE PRESSURE IN HPA 907.6 903.4 903.9 904.2 901.5 895.2 892.9 895.5 904.7 908.5 906.8 909.1 902.8 MAX. QFE PRESSURE IN HPA 915.8 911.3 909.1 913.5 905.8 900.7 896.2 899.0 911.0 914.7 911.9 916.5 916.5 DAY 10 20 18 5 15 9 2 16 23 10 2 8 MIN. QFE PRESSURE IN HPA 899.1 894.1 895.4 898.7 896.4 890.3 888.8 890.4 896.6 903.0 899.0 896.1 888.8 DAY 16 12 12 3 1 29 8 2 1 2 26 4 MEAN QNH PRESSURE IN HPA 1021.7 1017.0 1017.6 1017.9 1014.9 1008.0 1005.5 1008.3 1018.5 1022.7 1020.8 1023.3 1016.4 MAX. QNH PRESSURE IN HPA 1030.7 1025.8 1023.3 1028.2 1019.7 1014.1 1009.1 1012.2 1025.4 1029.5 1026.4 1031.5 1031.5 DAY 10 20 18 5 15 9 2 16 23 10 2 8 MIN. QNH PRESSURE IN HPA 1012.3 1006.8 1008.2 1011.9 1009.4 1002.6 1001.0 1002.7 1009.6 1016.6 1012.2 1009.0 1001.0 DAY 16 12 12 3 1 29 8 2 1 2 26 4 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 905.7 901.8 902.2 902.5 899.9 893.6 891.3 893.6 902.8 906.3 904.4 907.1 900.9 MAX. QFE PRESSURE IN HPA 913.3 910.0 907.7 912.7 903.8 899.1 894.8 896.6 909.4 912.5 910.1 914.1 914.1 DAY 10 20 18 5 15 8 3 16 23 10 1 8 MIN. QFE PRESSURE IN HPA 897.0 892.5 893.9 896.7 893.3 888.6 887.7 889.3 895.0 901.1 898.0 895.8 887.7 DAY 16 12 12 3 1 29 8 2 1 2 26 4 MEAN QNH PRESSURE IN HPA 1019.6 1015.3 1015.7 1016.0 1013.2 1006.3 1003.7 1006.3 1016.4 1020.3 1018.2 1021.1 1014.3 MAX. QNH PRESSURE IN HPA 1028.0 1024.3 1021.8 1027.3 1017.5 1012.3 1007.6 1009.6 1023.7 1027.1 1024.4 1028.8 1028.8 DAY 10 20 18 5 15 8 3 16 23 10 1 8 MIN. QNH PRESSURE IN HPA 1010.0 1005.1 1006.6 1009.7 1005.9 1000.8 999.8 1001.5 1007.8 1014.5 1011.1 1008.7 999.8 DAY 16 12 12 3 1 29 8 2 1 2 26 4 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 903.9 899.9 900.0 900.1 897.8 891.5 889.4 891.7 900.7 904.5 902.9 905.3 899.0 MAX. QFE PRESSURE IN HPA 912.4 908.2 905.7 910.6 902.0 897.1 893.8 894.5 908.0 910.5 907.8 912.0 912.4 DAY 28 20 18 5 15 8 13 8 23 10 1 7 MIN. QFE PRESSURE IN HPA 894.4 891.1 890.8 894.1 891.1 886.6 885.3 887.0 892.9 898.6 897.7 893.7 885.3 DAY 16 12 12 2 1 29 8 2 1 2 25 4 MEAN QNH PRESSURE IN HPA 1017.6 1013.3 1013.3 1013.4 1010.9 1004.0 1001.7 1004.1 1014.1 1018.3 1016.5 1019.1 1012.2 MAX. QNH PRESSURE IN HPA 1027.0 1022.3 1019.6 1025.0 1015.5 1010.1 1006.5 1007.3 1022.1 1024.9 1021.9 1026.5 1027.0 DAY 28 20 18 5 15 8 13 8 23 10 1 7 MIN. QNH PRESSURE IN HPA 1007.1 1003.5 1003.2 1006.8 1003.5 998.6 997.1 999.0 1005.5 1011.8 1010.8 1006.4 997.1 DAY 16 12 12 2 1 29 8 2 1 2 25 4 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION BAFGH (40820) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 31 36 N LONGITUDE 55 26 E DATA PROCESSING CENTER ELEVATION 991.4 M MEANS AND EXTREMES FOR THE YEAR 1994 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 1500 UTC. MEAN QFE PRESSURE IN HPA 904.5 900.2 900.3 900.1 897.7 891.0 889.3 891.6 901.0 905.0 903.8 906.0 899.2 MAX. QFE PRESSURE IN HPA 913.3 907.9 905.9 911.0 901.4 896.7 893.5 894.8 908.3 910.6 908.6 913.5 913.5 DAY 28 20 18 5 15 9 13 15 23 9 2 7 MIN. QFE PRESSURE IN HPA 895.3 892.7 892.0 894.1 890.3 885.8 885.8 886.8 893.1 899.0 898.1 894.8 885.8 DAY 16 12 12 2 1 28 8 2 4 2 25 4 MEAN QNH PRESSURE IN HPA 1018.2 1013.6 1013.7 1013.4 1010.7 1003.4 1001.5 1004.0 1014.5 1018.9 1017.5 1019.9 1012.4 MAX. QNH PRESSURE IN HPA 1028.0 1022.0 1019.8 1025.4 1014.9 1009.7 1006.2 1007.6 1022.5 1025.0 1022.8 1028.2 1028.2 DAY 28 20 18 5 15 9 13 15 23 9 2 7 MIN. QNH PRESSURE IN HPA 1008.1 1005.3 1004.5 1006.8 1002.6 997.7 997.7 998.8 1005.7 1012.2 1011.2 1007.6 997.7 DAY 16 12 12 2 1 28 8 2 4 2 25 4 MEAN QFF PRESSURE IN HPA 1018.5 1013.4 1010.7 1008.3 1003.6 994.0 991.6 994.7 1008.6 1014.4 1014.1 1020.6 1007.7 MAX. QFF PRESSURE IN HPA 1029.3 1025.2 1018.0 1024.7 1009.4 1002.1 996.5 999.0 1018.7 1022.7 1019.7 1032.5 1032.5 DAY 28 20 18 5 7 9 13 23 23 10 19 7 MIN. QFF PRESSURE IN HPA 1006.4 1002.4 999.7 998.8 995.5 988.0 986.5 988.8 997.5 1005.1 1006.0 1003.7 986.5 DAY 5 12 12 26 1 28 8 2 2 2 25 3 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 2006,MAY M.(S & A) STATION BAFGH (40820) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 31 36 N LONGITUDE 55 26 E DATA PROCESSING CENTER ELEVATION 991.4 M MEANS AND EXTREMES FOR THE YEAR 1995 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AIR TEMPERATURE (C) 12.0 12.6 16.2 22.3 27.8 33.5 38.0 34.9 29.9 22.8 17.7 8.4 23.0 MINIMUN AIR TEMPERATURE (C) 1.8 3.0 6.3 13.6 16.8 22.4 25.1 20.4 16.8 12.0 6.9 1.1 12.2 DAYS WITH MINIMUM TEMP. >=21 0 0 0 0 3 24 28 11 5 0 0 0 71 DAYS WITH MINIMUM TEMP. <=-4 1 2 1 0 0 0 0 0 0 0 2 0 6 DAYS WITH FREEZING MIN.<= 0 15 7 7 0 0 0 0 0 0 0 4 10 43 TEMPERATURE RECORDS LOWEST(C) -4.4 -5.0 -4.6 5.8 12.6 14.0 17.4 16.4 11.0 2.8 -5.0 -2.6 -5.0 DAY 25 27 7 1 19 1 28 9 5 29 28 19 MAXIMUM AIR TEMPERATURE (C) 18.3 18.4 22.0 27.4 32.9 39.0 43.7 41.3 36.5 29.3 24.7 13.5 28.9 DAYS WITH MAXIMUM TEMP. >=30 0 0 1 7 27 29 31 31 30 15 3 0 174 DAYS WITH MAXIMUM TEMP. <= 0 0 0 0 0 0 0 0 0 0 0 0 0 0 TEMPERATURE RECORDS HIGHEST(C) 24.6 24.6 30.6 32.8 38.6 44.0 46.2 44.2 39.8 36.6 30.0 18.0 46.2 DAY 17 23 25 20 7 14 12 23 12 4 1 2 DIF. BETWEEN (MAX.-MIN.) (C) 16.5 15.4 15.7 13.8 16.1 16.6 18.6 20.9 19.7 17.3 17.8 12.4 16.7 MEAN DAILY TEMP. (MDT) (C) 10.1 10.7 14.1 20.5 24.9 30.7 34.4 30.9 26.6 20.7 15.8 7.3 20.6 COOLING DEG. DAYS(BASE 21 0C) 0.0 0.0 2.9 26.0 119.4 291.5 416.9 305.9 169.3 55.5 2.9 0.0 1390.3 HEATING DEG. DAYS(BASE 18 0C) 245.8 204.9 132.6 8.8 0.0 0.0 0.0 0.0 0.0 21.6 91.5 330.5 1035.6 DEWPOINT (MEAN C) -5.2 -5.4 -5.7 0.4 1.1 1.3 1.4 -2.6 -4.9 -2.6 -9.7 -1.4 -2.8 MIXING RATIO (G/KG) 3.01 3.09 3.16 4.74 5.00 4.86 4.82 3.68 3.22 3.78 2.28 4.01 3.80 VAPOUR PRESSURE (HPA) 4.36 4.46 4.56 6.80 7.17 6.95 6.85 5.27 4.63 5.46 3.30 5.81 5.47 SATURATION DEF. (HPA) 10.62 11.07 15.09 21.23 31.64 47.09 62.22 53.72 39.84 24.56 18.79 5.58 28.45 RELATIVE HUMIDITY (MEAN %) 34 32 27 28 21 15 11 10 13 22 16 55 24 RELATIVE HUMIDITY (MAX. %) 53 50 44 47 34 27 17 19 24 37 27 76 38 RELATIVE HUMIDITY (MIN. %) 21 20 16 18 14 9 8 6 7 14 9 39 15 RELATIVE HUMIDITY (MEAN% 03UTC) 52 49 41 45 34 27 17 19 23 36 27 74 37 RELATIVE HUMIDITY (MEAN% 09UTC) 25 26 22 22 16 12 9 8 9 17 12 47 19 RELATIVE HUMIDITY (MEAN% 15UTC) 28 24 22 23 18 11 8 7 10 19 17 52 20 RH=0 => RELATIVE HUMIDITY < 0.5% AMOUNT OF PRECIPITATION MM. 2.5 4.3 24.2 20.3 2.4 0.0 0.0 0.0 0.0 8.0 0.0 17.5 79.2 DAYS WITH PRECIPITATION >=10 0 0 1 1 0 0 0 0 0 0 0 0 2 DAYS WITH PRECIPITATION >= 5 0 0 1 1 0 0 0 0 0 1 0 2 5 DAYS WITH PRECIPITATION >= 1 1 2 3 4 1 0 0 0 0 2 0 5 18 DAYS WITH PRECIPITATION 4 4 5 6 4 0 0 0 0 2 0 6 31 GREATEST DAILY PRECIPITATION 2.0 2.0 18.0 12.0 2.0 0.0 0.0 0.0 0.0 5.0 0.0 7.0 18.0 DAY 26 6 22 24 31 ** ** ** ** 23 ** 25 DAY WITH THUNDER STORM 0 0 0 5 0 0 0 0 0 0 0 1 6 DAYS WITH SNOW OR SLEET 0 0 0 0 0 0 0 0 0 0 0 0 0 DAYS WITH DUST 1 0 1 1 0 1 1 2 2 0 1 0 10 WIND DIRECTION (PREVAILING) 135 135 135 135 315 315 360 45 315 135 135 135 135 PREVAILING WIND SPEED(KNOTS) 6.1 8.0 6.8 8.5 8.4 8.3 9.9 9.6 9.9 8.5 7.2 7.8 7.6 PREVAILING WIND PERCENT 17.4 20.0 11.6 20.7 16.8 16.0 13.5 18.7 20.0 12.3 22.0 5.8 11.9 CALMS PERCENT OF WIND 67.7 59.3 63.9 42.0 52.3 56.7 63.9 51.0 47.3 69.0 63.3 84.5 60.2 NO. OF WIND OBSERVATION 155 140 155 150 155 150 155 155 150 155 150 155 1825 VECTOR WIND DIRECTION (MEAN) 149 153 242 157 332 307 3 4 335 82 140 156 26 VECTOR WIND MAGNITUDE(KNOTS) 1.0 0.9 0.2 2.3 1.4 1.3 2.3 3.1 0.8 0.3 1.7 0.2 0.3 WIND STEADINESES (MEAN %) 50.0 25.7 7.7 50.0 36.8 39.4 67.6 67.4 17.4 12.5 65.4 20.0 9.4 WIND SPEED (MEAN KNOTS) 2.0 3.5 2.6 4.6 3.8 3.3 3.4 4.6 4.6 2.4 2.6 1.0 3.2 FASTEST WIND DIRECTION 310 330 320 180 330 320 20 340 330 140 320 140 330 FASTEST WIND SPEED (KNOTS) 16 21 16 19 16 19 16 17 19 17 14 12 21 DAY 1 25 10 23 14 23 17 15 1 22 12 31 DAYS WITH SKY CLEAR (0-2)/8 22 15 19 10 19 25 29 30 29 29 27 13 267 DAYS WITH P.CLOUDY (3-6)/8 5 10 6 12 9 5 2 1 1 1 3 11 66 DAYS WITH CLOUDY (7-8)/8 4 3 6 8 3 0 0 0 0 1 0 7 32 DAYS WITH VISIBILITY =< 2 KM 0 0 0 0 1 0 0 0 0 0 1 2 4 DURATION OF SUNSHINE HOURS 244.0 215.7 271.8 248.6 ****** 335.3 365.3 375.1 327.3 309.4 286.9 183.7 ****** ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION BAFGH (40820) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 31 36 N LONGITUDE 55 26 E DATA PROCESSING CENTER ELEVATION 991.4 M MEANS AND EXTREMES FOR THE YEAR 1995 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL MEAN QFE PRESSURE IN HPA 906.3 903.7 902.5 900.9 901.0 895.5 890.3 895.1 899.4 904.5 905.4 907.6 901.0 MAX. QFE PRESSURE IN HPA 915.9 909.8 911.7 906.6 907.0 904.9 896.0 900.4 906.9 914.7 913.4 912.9 915.9 DAY-HOUR 7- 6 14- 6 3- 6 1- 6 26- 6 1- 6 28- 6 25- 6 22- 6 27- 6 16- 6 20- 6 MIN. QFE PRESSURE IN HPA 898.8 893.7 892.4 894.0 894.6 887.2 885.0 890.0 894.4 897.1 896.8 900.5 885.0 DAY-HOUR 22-12 23-12 26-15 24-15 10-15 22-15 10-15 23-15 19-15 13-12 25-15 4-12 MEAN QNH PRESSURE IN HPA 1020.3 1017.4 1016.1 1014.3 1014.4 1008.4 1002.6 1007.9 1012.7 1018.2 1019.3 1021.7 1014.4 MAX. QNH PRESSURE IN HPA 1030.8 1024.1 1026.2 1020.6 1021.0 1018.7 1008.9 1013.8 1020.9 1029.5 1028.1 1027.5 1030.8 DAY-HOUR 7- 6 14- 6 3- 6 1- 6 26- 6 1- 6 28- 6 25- 6 22- 6 27- 6 16- 6 20- 6 MIN. QNH PRESSURE IN HPA 1012.0 1006.4 1004.9 1006.7 1007.4 999.2 996.8 1002.3 1007.1 1010.1 1009.8 1013.9 996.8 DAY-HOUR 22-12 23-12 26-15 24-15 10-15 22-15 10-15 23-15 19-15 13-12 25-15 4-12 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 906.9 904.5 903.3 902.0 902.4 897.0 891.8 896.4 900.8 905.5 906.3 908.3 902.1 MAX. QFE PRESSURE IN HPA 913.9 909.0 910.0 906.3 906.7 904.0 895.8 899.7 906.8 913.6 912.2 911.8 913.9 DAY 8 26 3 1 27 1 29 25 22 27 16 11 MIN. QFE PRESSURE IN HPA 901.0 898.6 896.1 898.2 898.5 892.1 888.2 893.5 897.3 899.6 899.6 903.2 888.2 DAY 1 24 27 18 11 14 17 8 1 13 26 4 MEAN QNH PRESSURE IN HPA 1020.9 1018.3 1017.0 1015.6 1015.9 1010.0 1004.3 1009.3 1014.2 1019.4 1020.3 1022.4 1015.6 MAX. QNH PRESSURE IN HPA 1028.6 1023.2 1024.3 1020.3 1020.7 1017.7 1008.7 1013.0 1020.8 1028.3 1026.7 1026.3 1028.6 DAY 8 26 3 1 27 1 29 25 22 27 16 11 MIN. QNH PRESSURE IN HPA 1014.4 1011.8 1009.0 1011.3 1011.7 1004.6 1000.3 1006.2 1010.3 1012.9 1012.9 1016.8 1000.3 DAY 1 24 27 18 11 14 17 8 1 13 26 4 MEAN QFF PRESSURE IN HPA 1021.1 1017.7 1015.2 1011.0 1009.3 1001.2 994.0 1000.6 1007.3 1015.1 1018.5 1023.7 1011.2 MAX. QFF PRESSURE IN HPA 1030.8 1026.3 1024.8 1017.9 1014.6 1012.9 1000.1 1004.4 1014.0 1026.2 1030.0 1028.7 1030.8 DAY 8 26 3 1 27 1 28 25 22 27 28 11 MIN. QFF PRESSURE IN HPA 1011.8 1008.9 1003.9 1006.2 1004.8 994.1 989.2 996.6 1002.5 1006.6 1010.6 1017.5 989.2 DAY 12 23 26 18 6 14 11 23 1 13 12 6 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION BAFGH (40820) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 31 36 N LONGITUDE 55 26 E DATA PROCESSING CENTER ELEVATION 991.4 M MEANS AND EXTREMES FOR THE YEAR 1995 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 0600 UTC. MEAN QFE PRESSURE IN HPA 908.4 905.6 904.4 902.7 902.9 897.4 892.0 897.0 901.6 906.7 907.7 909.6 903.0 MAX. QFE PRESSURE IN HPA 915.9 909.8 911.7 906.6 907.0 904.9 896.0 900.4 906.9 914.7 913.4 912.9 915.9 DAY 7 14 3 1 26 1 28 25 22 27 16 20 MIN. QFE PRESSURE IN HPA 902.4 899.3 896.5 898.5 899.1 892.4 888.2 893.4 898.9 900.6 902.3 903.4 888.2 DAY 1 23 27 24 10 14 16 8 19 13 26 4 MEAN QNH PRESSURE IN HPA 1022.6 1019.5 1018.2 1016.2 1016.5 1010.5 1004.6 1010.0 1015.1 1020.7 1021.8 1023.8 1016.6 MAX. QNH PRESSURE IN HPA 1030.8 1024.1 1026.2 1020.6 1021.0 1018.7 1008.9 1013.8 1020.9 1029.5 1028.1 1027.5 1030.8 DAY 7 14 3 1 26 1 28 25 22 27 16 20 MIN. QNH PRESSURE IN HPA 1016.0 1012.5 1009.5 1011.7 1012.3 1004.9 1000.3 1006.0 1012.1 1014.0 1015.8 1017.1 1000.3 DAY 1 23 27 24 10 14 16 8 19 13 26 4 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 906.2 903.8 902.8 901.3 901.2 895.9 890.6 895.3 899.7 904.8 905.4 907.7 901.2 MAX. QFE PRESSURE IN HPA 913.9 908.3 909.7 905.0 905.7 903.8 894.8 898.8 904.7 912.3 911.3 911.3 913.9 DAY 7 14 3 1 26 1 28 25 22 27 16 10 MIN. QFE PRESSURE IN HPA 900.5 897.2 896.1 896.9 897.4 890.8 887.0 891.6 896.4 899.1 900.6 901.0 887.0 DAY 22 23 26 24 10 22 16 8 19 13 25 4 MEAN QNH PRESSURE IN HPA 1020.2 1017.5 1016.4 1014.7 1014.6 1008.8 1003.0 1008.2 1013.0 1018.6 1019.2 1021.8 1014.7 MAX. QNH PRESSURE IN HPA 1028.6 1022.5 1024.0 1018.8 1019.6 1017.5 1007.6 1012.0 1018.5 1026.9 1025.8 1025.8 1028.6 DAY 7 14 3 1 26 1 28 25 22 27 16 10 MIN. QNH PRESSURE IN HPA 1013.9 1010.2 1009.0 1009.9 1010.5 1003.2 999.0 1004.1 1009.4 1012.3 1014.0 1014.4 999.0 DAY 22 23 26 24 10 22 16 8 19 13 25 4 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 904.7 902.0 900.9 899.3 899.2 893.9 888.8 893.5 897.6 902.7 903.6 906.0 899.3 MAX. QFE PRESSURE IN HPA 912.4 906.7 908.0 903.0 904.3 901.8 892.7 896.8 902.1 910.1 909.4 910.1 912.4 DAY 7 14 3 1 26 1 28 25 22 26 16 10 MIN. QFE PRESSURE IN HPA 898.8 893.7 893.3 894.9 895.0 888.0 885.0 890.3 894.5 897.1 897.6 900.5 885.0 DAY 22 23 26 16 10 22 11 8 19 13 25 4 MEAN QNH PRESSURE IN HPA 1018.5 1015.5 1014.3 1012.5 1012.5 1006.6 1001.0 1006.1 1010.7 1016.2 1017.3 1019.9 1012.6 MAX. QNH PRESSURE IN HPA 1027.0 1020.7 1022.1 1016.6 1018.1 1015.3 1005.3 1009.8 1015.6 1024.4 1023.7 1024.4 1027.0 DAY 7 14 3 1 26 1 28 25 22 26 16 10 MIN. QNH PRESSURE IN HPA 1012.0 1006.4 1005.9 1007.7 1007.8 1000.1 996.8 1002.6 1007.3 1010.1 1010.7 1013.9 996.8 DAY 22 23 26 16 10 22 11 8 19 13 25 4 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION BAFGH (40820) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 31 36 N LONGITUDE 55 26 E DATA PROCESSING CENTER ELEVATION 991.4 M MEANS AND EXTREMES FOR THE YEAR 1995 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 1500 UTC. MEAN QFE PRESSURE IN HPA 905.5 902.5 901.2 899.5 899.2 893.4 888.4 893.4 897.5 902.7 904.1 906.4 899.5 MAX. QFE PRESSURE IN HPA 913.0 906.8 908.0 903.5 904.4 901.6 892.9 896.3 903.0 910.3 910.0 910.6 913.0 DAY 7 14 3 12 26 1 28 25 22 26 27 10 MIN. QFE PRESSURE IN HPA 899.8 894.1 892.4 894.0 894.6 887.2 885.0 890.0 894.4 897.3 896.8 901.2 885.0 DAY 11 23 26 24 10 22 10 23 19 12 25 4 MEAN QNH PRESSURE IN HPA 1019.4 1016.1 1014.6 1012.7 1012.4 1006.0 1000.5 1006.0 1010.5 1016.3 1017.8 1020.4 1012.7 MAX. QNH PRESSURE IN HPA 1027.6 1020.8 1022.1 1017.2 1018.2 1015.1 1005.5 1009.2 1016.6 1024.7 1024.3 1025.0 1027.6 DAY 7 14 3 12 26 1 28 25 22 26 27 10 MIN. QNH PRESSURE IN HPA 1013.1 1006.8 1004.9 1006.7 1007.4 999.2 996.8 1002.3 1007.1 1010.3 1009.8 1014.6 996.8 DAY 11 23 26 24 10 22 10 23 19 12 25 4 MEAN QFF PRESSURE IN HPA 1019.5 1015.6 1012.7 1008.1 1005.7 997.1 990.2 997.2 1003.7 1012.0 1016.0 1021.6 1008.3 MAX. QFF PRESSURE IN HPA 1029.6 1021.9 1022.5 1013.7 1011.7 1009.2 996.7 1000.7 1011.4 1022.7 1027.2 1026.0 1029.6 DAY 7 14 3 1 26 1 28 25 22 27 27 10 MIN. QFF PRESSURE IN HPA 1011.0 1003.1 999.5 1003.0 1001.3 989.0 985.0 992.1 999.4 1004.1 1007.6 1014.6 985.0 DAY 17 23 26 24 10 22 11 23 19 12 25 4 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 2006,MAY M.(S & A) STATION BAFGH (40820) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 31 36 N LONGITUDE 55 26 E DATA PROCESSING CENTER ELEVATION 991.4 M MEANS AND EXTREMES FOR THE YEAR 1996 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AIR TEMPERATURE (C) 6.9 13.5 16.0 23.4 29.0 34.7 33.9 33.8 32.0 23.0 14.3 12.0 22.7 MINIMUN AIR TEMPERATURE (C) 0.8 5.9 8.8 13.8 18.0 21.9 22.6 20.6 18.6 11.0 4.1 2.1 12.4 DAYS WITH MINIMUM TEMP. >=21 0 0 0 2 6 21 22 14 10 0 0 0 75 DAYS WITH MINIMUM TEMP. <=-4 3 0 0 0 0 0 0 0 0 0 1 2 6 DAYS WITH FREEZING MIN.<= 0 14 2 0 0 0 0 0 0 0 0 3 11 30 TEMPERATURE RECORDS LOWEST(C) -8.8 -2.0 3.0 4.4 11.6 13.6 18.2 14.8 10.4 2.8 -4.6 -6.2 -8.8 DAY 15 24 18 7 1 18 23 31 1 21 19 3 MAXIMUM AIR TEMPERATURE (C) 11.4 19.5 21.5 29.2 34.5 40.2 39.1 39.6 38.7 30.0 20.4 19.0 28.6 DAYS WITH MAXIMUM TEMP. >=30 0 0 0 15 31 30 31 31 30 19 0 0 187 DAYS WITH MAXIMUM TEMP. <= 0 1 0 0 0 0 0 0 0 0 0 0 0 1 TEMPERATURE RECORDS HIGHEST(C) 21.4 26.4 28.2 34.0 40.8 44.6 43.2 43.0 42.4 35.0 28.6 26.0 44.6 DAY 7 10 31 23 31 9 9 24 10 14 7 29 DIF. BETWEEN (MAX.-MIN.) (C) 10.6 13.6 12.7 15.4 16.5 18.3 16.5 19.0 20.1 19.0 16.3 16.9 16.2 MEAN DAILY TEMP. (MDT) (C) 6.1 12.7 15.2 21.5 26.3 31.0 30.8 30.1 28.6 20.5 12.3 10.5 20.5 COOLING DEG. DAYS(BASE 21 0C) 0.0 0.0 1.2 51.0 162.9 300.9 305.3 282.2 228.8 28.0 0.0 0.0 1360.3 HEATING DEG. DAYS(BASE 18 0C) 368.8 158.6 96.4 15.8 0.0 0.0 0.0 0.0 0.0 15.7 172.2 231.3 1058.8 DEWPOINT (MEAN C) -3.3 -3.6 0.6 -0.4 4.3 -0.2 1.5 1.2 1.5 -4.6 -6.4 -8.3 -1.5 MIXING RATIO (G/KG) 3.44 3.57 4.72 4.42 6.23 4.66 4.90 4.95 4.97 3.41 2.78 2.46 4.21 VAPOUR PRESSURE (HPA) 4.99 5.15 6.78 6.36 8.90 6.64 7.00 7.08 7.11 4.91 4.03 3.57 6.04 SATURATION DEF. (HPA) 5.95 11.26 12.38 24.13 33.07 50.89 47.79 48.07 43.26 25.11 13.47 11.40 27.23 RELATIVE HUMIDITY (MEAN %) 53 37 41 24 24 13 14 15 16 19 27 27 26 RELATIVE HUMIDITY (MAX. %) 74 57 64 41 43 24 27 26 26 32 42 46 42 RELATIVE HUMIDITY (MIN. %) 37 22 24 15 14 8 9 9 11 11 17 16 16 RELATIVE HUMIDITY (MEAN% 03UTC) 71 55 61 41 41 22 27 25 25 29 42 43 40 RELATIVE HUMIDITY (MEAN% 09UTC) 45 30 34 18 18 9 11 11 13 14 21 20 20 RELATIVE HUMIDITY (MEAN% 15UTC) 53 33 34 19 21 10 10 10 14 19 25 29 23 RH=0 => RELATIVE HUMIDITY < 0.5% AMOUNT OF PRECIPITATION MM. 17.8 11.0 16.4 7.0 2.5 0.0 0.0 0.0 0.0 0.0 0.0 0.0 54.7 DAYS WITH PRECIPITATION >=10 0 0 0 0 0 0 0 0 0 0 0 0 0 DAYS WITH PRECIPITATION >= 5 2 0 1 1 0 0 0 0 0 0 0 0 4 DAYS WITH PRECIPITATION >= 1 4 4 6 1 1 0 0 0 0 0 0 0 16 DAYS WITH PRECIPITATION 6 7 13 2 7 0 0 0 0 0 1 2 38 GREATEST DAILY PRECIPITATION 7.0 4.0 5.0 7.0 1.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 7.0 DAY 12 17 5 17 9 ** ** ** ** ** ** ** DAY WITH THUNDER STORM 0 1 1 1 3 0 0 0 0 0 0 1 7 DAYS WITH SNOW OR SLEET 3 0 0 0 0 0 0 0 0 0 0 0 3 DAYS WITH DUST 0 4 0 1 0 2 0 3 4 0 0 0 14 WIND DIRECTION (PREVAILING) 135 135 135 315 315 360 360 315 135 135 315 135 135 PREVAILING WIND SPEED(KNOTS) 7.4 8.9 9.9 10.3 7.6 11.0 10.2 10.7 7.6 9.9 8.4 9.6 8.6 PREVAILING WIND PERCENT 13.5 26.2 14.2 16.0 15.5 15.3 25.2 18.7 18.0 18.1 14.0 29.0 13.7 CALMS PERCENT OF WIND 72.3 39.3 48.4 36.0 58.1 46.7 31.6 38.1 56.7 50.3 69.3 58.7 50.5 NO. OF WIND OBSERVATION 155 145 155 150 155 150 155 155 150 155 150 155 1830 VECTOR WIND DIRECTION (MEAN) 102 171 205 246 325 350 356 347 87 206 316 136 351 VECTOR WIND MAGNITUDE(KNOTS) 0.3 1.0 0.8 1.3 0.9 2.8 5.3 3.5 0.8 0.2 0.9 2.6 0.7 WIND STEADINESES (MEAN %) 15.0 18.2 17.8 22.0 27.3 56.0 77.9 60.3 25.8 4.3 37.5 68.4 15.9 WIND SPEED (MEAN KNOTS) 2.0 5.5 4.5 5.9 3.3 5.0 6.8 5.8 3.1 4.7 2.4 3.8 4.4 FASTEST WIND DIRECTION 150 320 330 270 300 320 340 320 50 350 320 120 320 FASTEST WIND SPEED (KNOTS) 14 29 29 29 19 19 17 17 12 19 16 17 29 DAY 5 21 19 10 14 27 22 1 1 2 12 21 DAYS WITH SKY CLEAR (0-2)/8 10 11 7 13 16 22 28 31 30 29 20 19 236 DAYS WITH P.CLOUDY (3-6)/8 14 10 15 8 12 8 3 0 0 2 10 11 93 DAYS WITH CLOUDY (7-8)/8 7 8 9 9 3 0 0 0 0 0 0 1 37 DAYS WITH VISIBILITY =< 2 KM 2 0 0 0 0 0 0 0 4 0 0 0 6 DURATION OF SUNSHINE HOURS 184.3 202.3 218.7 269.8 310.0 350.6 363.3 362.8 317.7 313.9 231.9 250.7 3376.0 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION BAFGH (40820) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 31 36 N LONGITUDE 55 26 E DATA PROCESSING CENTER ELEVATION 991.4 M MEANS AND EXTREMES FOR THE YEAR 1996 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL MEAN QFE PRESSURE IN HPA 906.9 902.9 901.6 901.4 900.2 895.4 896.0 896.7 898.0 904.3 908.5 907.9 901.7 MAX. QFE PRESSURE IN HPA 914.2 911.5 908.1 908.7 906.0 900.2 902.9 904.6 908.0 912.8 920.6 916.0 920.6 DAY-HOUR 26- 6 14- 6 6- 6 7- 6 7- 6 28- 6 3- 6 30- 6 25- 6 19- 6 19- 6 4- 6 MIN. QFE PRESSURE IN HPA 899.8 891.9 895.2 892.1 892.2 890.0 890.3 890.3 889.0 895.8 901.1 901.8 889.0 DAY-HOUR 19-12 5-12 26-15 10-12 29-15 19-15 7-12 8-15 20-15 6-12 28-12 15- 9 MEAN QNH PRESSURE IN HPA 1020.9 1016.5 1015.0 1014.8 1013.6 1008.3 1009.0 1009.7 1011.1 1018.1 1022.7 1022.0 1015.1 MAX. QNH PRESSURE IN HPA 1028.9 1026.0 1022.2 1022.9 1019.9 1013.5 1016.5 1018.4 1022.1 1027.4 1036.0 1030.9 1036.0 DAY-HOUR 26- 6 14- 6 6- 6 7- 6 7- 6 28- 6 3- 6 30- 6 25- 6 19- 6 19- 6 4- 6 MIN. QNH PRESSURE IN HPA 1013.1 1004.4 1008.0 1004.6 1004.7 1002.3 1002.6 1002.6 1001.2 1008.7 1014.5 1015.3 1001.2 DAY-HOUR 19-12 5-12 26-15 10-12 29-15 19-15 7-12 8-15 20-15 6-12 28-12 15- 9 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 907.2 903.5 902.6 902.6 901.7 897.2 897.5 898.1 899.3 905.6 909.4 908.6 902.8 MAX. QFE PRESSURE IN HPA 912.9 910.3 906.9 907.7 905.9 899.9 902.5 904.2 906.6 912.4 919.6 914.8 919.6 DAY 26 14 29 5 7 28 3 30 25 20 19 4 MIN. QFE PRESSURE IN HPA 902.2 894.4 898.3 898.6 896.3 894.6 893.4 894.4 894.6 899.4 903.7 903.0 893.4 DAY 12 5 26 19 29 24 7 9 20 6 29 15 MEAN QNH PRESSURE IN HPA 1021.3 1017.2 1016.2 1016.2 1015.2 1010.2 1010.6 1011.2 1012.6 1019.5 1023.7 1022.8 1016.4 MAX. QNH PRESSURE IN HPA 1027.5 1024.7 1020.9 1021.8 1019.8 1013.2 1016.1 1017.9 1020.6 1027.0 1034.9 1029.6 1034.9 DAY 26 14 29 5 7 28 3 30 25 20 19 4 MIN. QNH PRESSURE IN HPA 1015.7 1007.1 1011.4 1011.8 1009.2 1007.4 1006.0 1007.1 1007.4 1012.7 1017.4 1016.6 1006.0 DAY 12 5 26 19 29 24 7 9 20 6 29 15 MEAN QFF PRESSURE IN HPA 1023.1 1016.2 1013.8 1011.2 1008.1 1001.0 1001.7 1002.6 1004.9 1015.5 1023.2 1023.4 1012.1 MAX. QFF PRESSURE IN HPA 1031.7 1026.2 1019.5 1021.4 1014.5 1004.4 1007.3 1011.3 1014.0 1025.7 1037.8 1032.5 1037.8 DAY 14 14 6 5 7 17 3 31 25 20 19 3 MIN. QFF PRESSURE IN HPA 1013.8 1006.1 1006.4 1005.4 1000.0 997.7 996.7 998.6 999.0 1008.1 1015.3 1014.7 996.7 DAY 7 5 26 25 29 6 7 9 19 6 29 15 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION BAFGH (40820) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 31 36 N LONGITUDE 55 26 E DATA PROCESSING CENTER ELEVATION 991.4 M MEANS AND EXTREMES FOR THE YEAR 1996 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 0600 UTC. MEAN QFE PRESSURE IN HPA 908.6 904.8 903.5 903.4 902.2 897.4 897.8 898.6 900.2 906.7 910.7 910.0 903.7 MAX. QFE PRESSURE IN HPA 914.2 911.5 908.1 908.7 906.0 900.2 902.9 904.6 908.0 912.8 920.6 916.0 920.6 DAY 26 14 6 7 7 28 3 30 25 19 19 4 MIN. QFE PRESSURE IN HPA 903.0 894.2 899.1 897.5 896.7 894.8 894.1 894.5 895.2 900.3 905.1 903.8 894.1 DAY 12 5 26 10 29 19 7 8 19 6 29 15 MEAN QNH PRESSURE IN HPA 1022.8 1018.6 1017.2 1017.1 1015.7 1010.5 1010.9 1011.8 1013.6 1020.7 1025.1 1024.4 1017.3 MAX. QNH PRESSURE IN HPA 1028.9 1026.0 1022.2 1022.9 1019.9 1013.5 1016.5 1018.4 1022.1 1027.4 1036.0 1030.9 1036.0 DAY 26 14 6 7 7 28 3 30 25 19 19 4 MIN. QNH PRESSURE IN HPA 1016.6 1006.9 1012.3 1010.6 1009.7 1007.6 1006.8 1007.3 1008.0 1013.6 1018.9 1017.5 1006.8 DAY 12 5 26 10 29 19 7 8 19 6 29 15 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 907.1 903.1 901.8 901.8 900.6 895.9 896.3 896.9 898.3 904.4 908.5 907.9 901.9 MAX. QFE PRESSURE IN HPA 912.7 910.0 905.8 907.2 904.2 898.5 902.0 902.7 905.9 910.8 917.8 913.5 917.8 DAY 26 23 6 7 3 3 3 30 25 20 19 4 MIN. QFE PRESSURE IN HPA 901.6 892.3 897.4 895.1 895.0 893.2 892.1 892.9 891.1 897.5 903.2 901.8 891.1 DAY 19 5 26 10 29 19 7 8 20 6 28 15 MEAN QNH PRESSURE IN HPA 1021.2 1016.8 1015.3 1015.3 1014.0 1008.8 1009.3 1009.9 1011.5 1018.1 1022.7 1022.0 1015.4 MAX. QNH PRESSURE IN HPA 1027.3 1024.3 1019.7 1021.2 1017.9 1011.7 1015.5 1016.3 1019.8 1025.2 1032.9 1028.2 1032.9 DAY 26 23 6 7 3 3 3 30 25 20 19 4 MIN. QNH PRESSURE IN HPA 1015.1 1004.8 1010.5 1007.9 1007.8 1005.8 1004.6 1005.5 1003.5 1010.6 1016.8 1015.3 1003.5 DAY 19 5 26 10 29 19 7 8 20 6 28 15 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 905.5 901.3 899.9 899.6 898.4 893.7 894.5 895.1 896.2 902.5 906.9 906.3 900.0 MAX. QFE PRESSURE IN HPA 910.9 908.6 905.5 905.4 903.5 896.5 900.6 900.7 903.9 909.1 916.4 912.0 916.4 DAY 26 23 22 7 7 28 3 30 25 19 18 3 MIN. QFE PRESSURE IN HPA 899.8 891.9 895.4 892.1 893.2 890.8 890.3 890.9 889.3 895.8 901.1 902.5 889.3 DAY 19 5 26 10 29 19 7 8 20 6 28 17 MEAN QNH PRESSURE IN HPA 1019.3 1014.7 1013.2 1012.9 1011.6 1006.3 1007.3 1008.0 1009.2 1016.1 1020.9 1020.2 1013.3 MAX. QNH PRESSURE IN HPA 1025.3 1022.8 1019.4 1019.3 1017.2 1009.5 1014.0 1014.1 1017.6 1023.3 1031.4 1026.5 1031.4 DAY 26 23 22 7 7 28 3 30 25 19 18 3 MIN. QNH PRESSURE IN HPA 1013.1 1004.4 1008.2 1004.6 1005.8 1003.2 1002.6 1003.3 1001.5 1008.7 1014.5 1016.1 1001.5 DAY 19 5 26 10 29 19 7 8 20 6 28 17 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION BAFGH (40820) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 31 36 N LONGITUDE 55 26 E DATA PROCESSING CENTER ELEVATION 991.4 M MEANS AND EXTREMES FOR THE YEAR 1996 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 1500 UTC. MEAN QFE PRESSURE IN HPA 905.9 901.9 900.2 899.6 898.2 893.2 894.1 894.8 896.0 902.6 907.3 906.9 900.0 MAX. QFE PRESSURE IN HPA 911.7 909.1 904.1 904.9 903.0 896.1 900.0 900.4 903.3 909.7 917.2 912.2 917.2 DAY 26 23 15 7 7 28 3 30 25 19 18 3 MIN. QFE PRESSURE IN HPA 900.6 894.4 895.2 893.2 892.2 890.0 890.3 890.3 889.0 896.1 901.6 902.8 889.0 DAY 6 5 26 10 29 19 7 8 20 6 6 22 MEAN QNH PRESSURE IN HPA 1019.8 1015.5 1013.5 1012.8 1011.4 1005.8 1006.9 1007.6 1008.9 1016.2 1021.3 1020.9 1013.4 MAX. QNH PRESSURE IN HPA 1026.2 1023.3 1017.8 1018.7 1016.6 1009.0 1013.3 1013.8 1016.9 1024.0 1032.2 1026.7 1032.2 DAY 26 23 15 7 7 28 3 30 25 19 18 3 MIN. QNH PRESSURE IN HPA 1014.0 1007.1 1008.0 1005.8 1004.7 1002.3 1002.6 1002.6 1001.2 1009.0 1015.1 1016.4 1001.2 DAY 6 5 26 10 29 19 7 8 20 6 6 22 MEAN QFF PRESSURE IN HPA 1021.3 1014.4 1011.1 1007.9 1004.2 996.5 998.0 999.0 1001.1 1012.0 1020.7 1021.4 1009.0 MAX. QFF PRESSURE IN HPA 1030.5 1024.3 1017.4 1016.8 1010.8 1001.0 1004.3 1007.2 1010.5 1022.5 1033.5 1030.3 1033.5 DAY 14 23 15 4 7 17 3 31 25 20 19 3 MIN. QFF PRESSURE IN HPA 1011.9 1005.6 1003.0 999.7 995.8 992.4 993.0 993.9 993.3 1004.1 1012.8 1015.1 992.4 DAY 6 5 26 10 29 5 7 8 20 6 6 29 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 2006,MAY M.(S & A) STATION BAFGH (40820) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 31 36 N LONGITUDE 55 26 E DATA PROCESSING CENTER ELEVATION 991.4 M MEANS AND EXTREMES FOR THE YEAR 1997 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AIR TEMPERATURE (C) 11.2 12.1 15.7 21.9 28.5 34.4 38.4 34.9 30.9 24.8 16.0 11.2 23.3 MINIMUN AIR TEMPERATURE (C) 2.2 0.9 6.4 12.4 17.6 23.1 26.0 20.2 18.1 14.4 7.6 3.2 12.7 DAYS WITH MINIMUM TEMP. >=21 0 0 0 0 3 25 30 12 4 0 0 0 74 DAYS WITH MINIMUM TEMP. <=-4 0 6 0 0 0 0 0 0 0 0 0 1 7 DAYS WITH FREEZING MIN.<= 0 9 14 1 0 0 0 0 0 0 0 0 7 31 TEMPERATURE RECORDS LOWEST(C) -2.4 -8.4 -1.0 2.8 9.8 16.6 19.8 11.8 12.6 9.4 1.8 -4.2 -8.4 DAY 19 9 10 13 7 30 1 29 17 21 25 29 MAXIMUM AIR TEMPERATURE (C) 17.2 18.4 21.3 27.4 33.5 39.7 44.1 41.5 37.2 30.9 21.3 16.6 29.1 DAYS WITH MAXIMUM TEMP. >=30 0 0 0 8 26 30 31 31 30 19 0 0 175 DAYS WITH MAXIMUM TEMP. <= 0 0 0 0 0 0 0 0 0 0 0 0 0 0 TEMPERATURE RECORDS HIGHEST(C) 22.6 27.6 27.8 34.0 39.6 43.8 46.6 45.0 41.2 37.2 27.8 23.8 46.6 DAY 1 23 4 28 28 16 23 15 1 4 5 10 DIF. BETWEEN (MAX.-MIN.) (C) 15.0 17.5 14.9 15.0 15.9 16.6 18.1 21.3 19.1 16.5 13.7 13.4 16.4 MEAN DAILY TEMP. (MDT) (C) 9.7 9.7 13.9 19.9 25.6 31.4 35.0 30.8 27.6 22.7 14.4 9.9 20.9 COOLING DEG. DAYS(BASE 21 0C) 0.0 0.9 0.0 25.5 146.4 312.1 434.9 304.3 199.1 70.4 0.4 0.0 1494.0 HEATING DEG. DAYS(BASE 18 0C) 258.0 238.3 130.5 25.8 0.0 0.0 0.0 0.0 0.0 2.6 117.5 250.9 1023.5 DEWPOINT (MEAN C) -5.7 -10.0 -5.8 -1.2 0.6 2.1 2.3 -0.9 -2.9 -0.1 0.3 -0.9 -1.9 MIXING RATIO (G/KG) 2.97 2.27 3.14 4.53 4.61 5.21 5.31 4.21 3.59 4.36 4.46 4.08 4.06 VAPOUR PRESSURE (HPA) 4.29 3.28 4.51 6.50 6.62 7.43 7.54 6.02 5.16 6.30 6.45 5.91 5.83 SATURATION DEF. (HPA) 9.90 12.53 14.33 21.24 34.07 48.94 62.73 53.21 41.90 26.93 12.74 8.10 28.89 RELATIVE HUMIDITY (MEAN %) 35 23 28 27 19 15 12 12 12 22 38 47 24 RELATIVE HUMIDITY (MAX. %) 52 39 48 46 34 27 20 22 18 32 56 71 39 RELATIVE HUMIDITY (MIN. %) 24 13 17 17 11 9 8 7 8 15 26 31 16 RELATIVE HUMIDITY (MEAN% 03UTC) 50 38 47 43 33 27 20 22 18 32 55 69 38 RELATIVE HUMIDITY (MEAN% 09UTC) 29 17 21 21 14 11 9 9 11 19 30 37 19 RELATIVE HUMIDITY (MEAN% 15UTC) 34 20 22 23 14 12 9 9 10 20 36 45 21 RH=0 => RELATIVE HUMIDITY < 0.5% AMOUNT OF PRECIPITATION MM. 8.2 0.0 17.0 17.9 0.9 2.7 0.0 0.0 0.0 3.6 1.8 8.1 60.2 DAYS WITH PRECIPITATION >=10 0 0 0 1 0 0 0 0 0 0 0 0 1 DAYS WITH PRECIPITATION >= 5 0 0 2 1 0 0 0 0 0 0 0 0 3 DAYS WITH PRECIPITATION >= 1 3 0 4 5 0 1 0 0 0 1 0 3 17 DAYS WITH PRECIPITATION 3 0 5 9 3 3 0 0 0 1 5 5 34 GREATEST DAILY PRECIPITATION 4.0 0.0 7.0 12.0 0.6 2.0 0.0 0.0 0.0 3.6 0.9 4.0 12.0 DAY 17 ** 13 25 29 25 ** ** ** 24 28 11 DAY WITH THUNDER STORM 0 0 0 1 0 1 0 0 0 0 0 0 2 DAYS WITH SNOW OR SLEET 0 0 0 0 0 0 0 0 0 0 0 0 0 DAYS WITH DUST 0 5 3 0 0 8 3 0 2 2 0 0 23 WIND DIRECTION (PREVAILING) 135 135 135 180 315 315 45 315 135 135 135 135 135 PREVAILING WIND SPEED(KNOTS) 10.6 7.9 7.6 6.5 6.8 7.0 8.4 8.1 6.0 6.2 6.0 5.8 7.3 PREVAILING WIND PERCENT 28.4 12.1 16.8 12.7 13.5 16.7 18.1 17.4 12.0 12.3 13.3 16.8 11.6 CALMS PERCENT OF WIND 51.0 56.4 39.4 48.7 55.5 46.7 54.2 53.5 60.0 70.3 71.3 70.3 56.4 NO. OF WIND OBSERVATION 155 140 155 150 155 150 155 155 150 155 150 155 1825 VECTOR WIND DIRECTION (MEAN) 143 197 208 196 343 325 18 345 8 106 118 137 128 VECTOR WIND MAGNITUDE(KNOTS) 3.1 1.7 1.8 1.2 1.1 1.4 2.2 2.6 0.5 0.7 R< 0.1 0.9 R< 0.1 WIND STEADINESES (MEAN %) 64.6 44.7 34.0 36.4 37.9 38.9 64.7 70.3 20.0 38.9 1.2 52.9 1.2 WIND SPEED (MEAN KNOTS) 4.8 3.8 5.3 3.3 2.9 3.6 3.4 3.7 2.5 1.8 1.9 1.7 3.2 FASTEST WIND DIRECTION 160 210 300 360 280 130 340 350 320 50 130 150 300 FASTEST WIND SPEED (KNOTS) 19 19 29 17 14 14 12 16 14 16 12 12 29 DAY 27 22 13 22 5 3 8 11 15 14 3 1 DAYS WITH SKY CLEAR (0-2)/8 18 19 8 11 18 20 15 31 29 12 7 13 201 DAYS WITH P.CLOUDY (3-6)/8 10 9 16 13 8 8 16 0 1 17 19 15 132 DAYS WITH CLOUDY (7-8)/8 3 0 7 6 5 2 0 0 0 2 4 3 32 DAYS WITH VISIBILITY =< 2 KM 0 4 2 1 0 1 3 0 0 0 0 0 11 DURATION OF SUNSHINE HOURS 234.4 252.6 245.1 248.8 316.2 327.2 342.4 375.1 325.2 272.4 229.8 225.9 3395.1 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION BAFGH (40820) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 31 36 N LONGITUDE 55 26 E DATA PROCESSING CENTER ELEVATION 991.4 M MEANS AND EXTREMES FOR THE YEAR 1997 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL MEAN QFE PRESSURE IN HPA 904.2 904.0 899.9 900.4 900.7 895.5 891.2 895.4 900.6 904.7 906.5 905.6 900.7 MAX. QFE PRESSURE IN HPA 913.3 912.1 913.7 908.0 908.5 900.4 895.6 901.1 907.1 910.2 917.0 915.6 917.0 DAY-HOUR 19- 6 17- 6 11- 6 14- 6 7- 6 8- 6 9- 6 29- 6 19- 6 9- 6 8- 6 28- 6 MIN. QFE PRESSURE IN HPA 892.1 896.1 890.6 892.3 893.0 889.3 884.6 889.9 894.1 900.0 899.7 894.8 884.6 DAY-HOUR 16-15 27-12 29-15 10-12 4-15 19-15 16-15 5-15 3-15 23-12 12-12 10-12 MEAN QNH PRESSURE IN HPA 1018.0 1017.7 1013.2 1013.7 1014.0 1008.4 1003.6 1008.2 1014.0 1018.4 1020.5 1019.5 1014.1 MAX. QNH PRESSURE IN HPA 1028.0 1026.6 1028.4 1022.1 1022.7 1013.8 1008.5 1014.5 1021.1 1024.5 1032.0 1030.5 1032.0 DAY-HOUR 19- 6 17- 6 11- 6 14- 6 7- 6 8- 6 9- 6 29- 6 19- 6 9- 6 8- 6 28- 6 MIN. QNH PRESSURE IN HPA 1004.6 1009.0 1003.0 1004.8 1005.6 1001.5 996.4 1002.2 1006.8 1013.3 1013.0 1007.6 996.4 DAY-HOUR 16-15 27-12 29-15 10-12 4-15 19-15 16-15 5-15 3-15 23-12 12-12 10-12 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 905.1 904.4 900.9 901.5 902.0 897.1 892.7 896.8 902.0 905.8 907.5 906.2 901.8 MAX. QFE PRESSURE IN HPA 911.6 911.1 911.4 907.5 908.0 900.1 895.4 900.4 906.1 909.5 915.2 914.6 915.2 DAY 19 8 11 14 7 15 9 29 19 9 8 29 MIN. QFE PRESSURE IN HPA 895.5 898.6 894.5 895.5 895.3 893.7 888.7 893.5 897.0 902.5 903.1 898.8 888.7 DAY 17 23 30 11 5 30 16 6 3 23 20 10 MEAN QNH PRESSURE IN HPA 1018.9 1018.1 1014.3 1015.0 1015.6 1010.1 1005.2 1009.8 1015.5 1019.7 1021.6 1020.2 1015.3 MAX. QNH PRESSURE IN HPA 1026.1 1025.5 1025.9 1021.6 1022.1 1013.4 1008.2 1013.8 1020.0 1023.8 1030.0 1029.4 1030.0 DAY 19 8 11 14 7 15 9 29 19 9 8 29 MIN. QNH PRESSURE IN HPA 1008.4 1011.8 1007.3 1008.4 1008.1 1006.4 1000.9 1006.2 1010.0 1016.1 1016.7 1012.0 1000.9 DAY 17 23 30 11 5 30 16 6 3 23 20 10 MEAN QFF PRESSURE IN HPA 1019.2 1018.3 1012.5 1010.6 1008.7 1001.0 994.8 1001.0 1008.4 1014.8 1019.9 1020.5 1010.8 MAX. QFF PRESSURE IN HPA 1028.7 1030.0 1025.9 1019.9 1018.5 1004.6 998.1 1007.2 1013.8 1018.4 1028.5 1032.5 1032.5 DAY 19 8 11 14 7 12 28 29 17 10 8 29 MIN. QFF PRESSURE IN HPA 1005.1 1007.2 1003.3 1002.4 999.7 997.0 991.3 996.2 1001.9 1011.0 1013.8 1009.0 991.3 DAY 17 23 29 10 5 18 17 1 3 23 13 10 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION BAFGH (40820) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 31 36 N LONGITUDE 55 26 E DATA PROCESSING CENTER ELEVATION 991.4 M MEANS AND EXTREMES FOR THE YEAR 1997 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 0600 UTC. MEAN QFE PRESSURE IN HPA 906.3 906.1 901.9 902.4 902.6 897.4 893.0 897.3 902.8 906.7 908.5 907.6 902.7 MAX. QFE PRESSURE IN HPA 913.3 912.1 913.7 908.0 908.5 900.4 895.6 901.1 907.1 910.2 917.0 915.6 917.0 DAY 19 17 11 14 7 8 9 29 19 9 8 28 MIN. QFE PRESSURE IN HPA 896.6 899.6 894.4 895.8 895.6 893.8 888.7 893.8 897.5 903.5 904.0 899.4 888.7 DAY 17 27 25 11 5 30 16 6 3 23 20 10 MEAN QNH PRESSURE IN HPA 1020.2 1020.1 1015.4 1016.0 1016.2 1010.5 1005.6 1010.3 1016.4 1020.7 1022.7 1021.7 1016.3 MAX. QNH PRESSURE IN HPA 1028.0 1026.6 1028.4 1022.1 1022.7 1013.8 1008.5 1014.5 1021.1 1024.5 1032.0 1030.5 1032.0 DAY 19 17 11 14 7 8 9 29 19 9 8 28 MIN. QNH PRESSURE IN HPA 1009.6 1012.9 1007.1 1008.7 1008.5 1006.5 1000.9 1006.5 1010.6 1017.2 1017.7 1012.7 1000.9 DAY 17 27 25 11 5 30 16 6 3 23 20 10 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 904.4 904.4 900.2 900.7 900.9 895.9 891.5 895.5 901.0 904.7 906.3 905.4 900.9 MAX. QFE PRESSURE IN HPA 911.8 910.8 911.7 906.6 906.4 898.9 894.2 899.3 905.1 908.5 913.9 914.0 914.0 DAY 19 7 11 13 7 7 9 29 16 9 8 28 MIN. QFE PRESSURE IN HPA 894.3 896.8 891.8 893.8 895.3 891.9 887.7 892.2 896.3 901.4 901.9 896.9 887.7 DAY 17 27 25 10 5 30 16 5 3 23 12 10 MEAN QNH PRESSURE IN HPA 1018.2 1018.1 1013.5 1014.0 1014.3 1008.8 1003.9 1008.4 1014.4 1018.5 1020.2 1019.2 1014.3 MAX. QNH PRESSURE IN HPA 1026.3 1025.2 1026.2 1020.6 1020.4 1012.1 1006.9 1012.5 1018.9 1022.7 1028.6 1028.7 1028.7 DAY 19 7 11 13 7 7 9 29 16 9 8 28 MIN. QNH PRESSURE IN HPA 1007.0 1009.8 1004.3 1006.5 1008.1 1004.4 999.8 1004.7 1009.2 1014.9 1015.4 1009.9 999.8 DAY 17 27 25 10 5 30 16 5 3 23 12 10 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 902.5 902.4 898.1 898.7 899.0 893.8 889.6 893.7 898.7 902.9 905.0 904.1 899.0 MAX. QFE PRESSURE IN HPA 910.4 910.7 909.8 905.6 904.2 896.9 892.8 897.4 903.1 906.5 912.4 913.2 913.2 DAY 19 7 11 13 12 7 9 29 20 9 8 28 MIN. QFE PRESSURE IN HPA 893.1 896.1 891.4 892.3 893.7 889.9 885.6 890.4 894.5 900.0 899.7 894.8 885.6 DAY 17 27 29 10 4 30 16 5 2 23 12 10 MEAN QNH PRESSURE IN HPA 1016.1 1016.0 1011.2 1011.8 1012.2 1006.5 1001.8 1006.4 1011.9 1016.5 1018.8 1017.8 1012.3 MAX. QNH PRESSURE IN HPA 1024.8 1025.1 1024.1 1019.5 1017.9 1009.9 1005.4 1010.5 1016.7 1020.5 1027.0 1027.8 1027.8 DAY 19 7 11 13 12 7 9 29 20 9 8 28 MIN. QNH PRESSURE IN HPA 1005.7 1009.0 1003.8 1004.8 1006.4 1002.2 997.5 1002.7 1007.3 1013.3 1013.0 1007.6 997.5 DAY 17 27 29 10 4 30 16 5 2 23 12 10 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION BAFGH (40820) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 31 36 N LONGITUDE 55 26 E DATA PROCESSING CENTER ELEVATION 991.4 M MEANS AND EXTREMES FOR THE YEAR 1997 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 1500 UTC. MEAN QFE PRESSURE IN HPA 902.9 902.6 898.4 898.6 898.7 893.4 889.2 893.5 898.5 903.2 905.5 904.7 899.1 MAX. QFE PRESSURE IN HPA 910.3 911.6 909.9 905.4 904.2 897.0 892.4 897.3 902.5 907.5 913.6 914.2 914.2 DAY 19 7 11 13 6 11 9 28 19 8 8 28 MIN. QFE PRESSURE IN HPA 892.1 897.1 890.6 893.3 893.0 889.3 884.6 889.9 894.1 900.2 900.7 895.3 884.6 DAY 16 27 29 10 4 19 16 5 3 6 19 10 MEAN QNH PRESSURE IN HPA 1016.5 1016.1 1011.6 1011.8 1011.9 1006.1 1001.4 1006.2 1011.7 1016.9 1019.4 1018.5 1012.3 MAX. QNH PRESSURE IN HPA 1024.7 1026.1 1024.2 1019.3 1017.9 1010.0 1004.9 1010.3 1016.1 1021.6 1028.3 1028.9 1028.9 DAY 19 7 11 13 6 11 9 28 19 8 8 28 MIN. QNH PRESSURE IN HPA 1004.6 1010.1 1003.0 1005.9 1005.6 1001.5 996.4 1002.2 1006.8 1013.5 1014.1 1008.1 996.4 DAY 16 27 29 10 4 19 16 5 3 6 19 10 MEAN QFF PRESSURE IN HPA 1016.7 1016.3 1009.8 1007.3 1005.1 997.0 991.0 997.3 1004.4 1011.9 1017.7 1018.7 1007.8 MAX. QFF PRESSURE IN HPA 1026.8 1029.4 1024.5 1018.2 1014.2 1002.1 994.8 1004.0 1009.6 1016.2 1027.0 1030.9 1030.9 DAY 19 7 11 13 6 1 9 29 20 24 8 28 MIN. QFF PRESSURE IN HPA 1000.9 1006.4 998.4 999.9 998.8 992.2 986.4 993.1 998.1 1007.2 1010.6 1004.7 986.4 DAY 16 22 29 10 4 19 16 5 3 6 12 10 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 2006,MAY M.(S & A) STATION BAFGH (40820) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 31 36 N LONGITUDE 55 26 E DATA PROCESSING CENTER ELEVATION 991.4 M MEANS AND EXTREMES FOR THE YEAR 1998 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AIR TEMPERATURE (C) 10.1 12.1 18.2 25.1 29.8 33.8 36.7 35.0 31.1 24.2 18.8 14.6 24.1 MINIMUN AIR TEMPERATURE (C) 1.4 3.8 9.6 14.5 17.6 20.5 25.3 23.1 18.6 12.1 7.9 4.4 13.2 DAYS WITH MINIMUM TEMP. >=21 0 0 1 3 6 12 28 22 8 1 0 0 81 DAYS WITH MINIMUM TEMP. <=-4 1 0 0 0 0 0 0 0 0 0 0 0 1 DAYS WITH FREEZING MIN.<= 0 15 8 2 0 0 0 0 0 0 0 0 1 26 TEMPERATURE RECORDS LOWEST(C) -4.4 -3.8 -1.0 5.2 9.6 17.8 19.6 17.2 13.0 8.0 4.4 -1.6 -4.4 DAY 17 24 4 8 3 1 27 27 17 15 25 19 MAXIMUM AIR TEMPERATURE (C) 15.8 17.5 23.4 30.6 35.2 39.0 42.0 40.7 37.5 31.0 26.1 21.8 30.1 DAYS WITH MAXIMUM TEMP. >=30 0 0 4 19 27 30 31 31 30 17 0 0 189 DAYS WITH MAXIMUM TEMP. <= 0 0 0 0 0 0 0 0 0 0 0 0 0 0 TEMPERATURE RECORDS HIGHEST(C) 21.8 26.4 34.6 37.0 39.6 40.6 47.6 44.8 42.2 38.8 28.6 25.4 47.6 DAY 25 8 29 21 12 28 9 22 5 1 10 24 DIF. BETWEEN (MAX.-MIN.) (C) 14.4 13.7 13.8 16.1 17.6 18.5 16.7 17.6 18.9 18.9 18.2 17.4 16.9 MEAN DAILY TEMP. (MDT) (C) 8.6 10.7 16.5 22.6 26.4 29.7 33.7 31.9 28.1 21.5 17.0 13.1 21.6 COOLING DEG. DAYS(BASE 21 0C) 0.0 0.0 17.1 80.4 172.7 261.9 392.3 337.9 211.6 51.6 0.0 0.0 1525.5 HEATING DEG. DAYS(BASE 18 0C) 290.0 210.2 90.3 8.2 0.0 0.0 0.0 0.0 0.0 0.3 38.4 152.0 789.4 DEWPOINT (MEAN C) -4.6 -4.3 -1.9 -1.7 -0.3 -0.8 5.4 3.9 -0.8 -3.2 -6.0 -6.8 -1.8 MIXING RATIO (G/KG) 3.16 3.30 4.06 4.02 4.35 4.15 6.51 5.82 4.30 3.47 2.82 2.80 4.06 VAPOUR PRESSURE (HPA) 4.56 4.76 5.85 5.78 6.24 5.95 9.25 8.31 6.17 5.02 4.09 4.07 5.84 SATURATION DEF. (HPA) 8.55 10.34 16.65 28.07 37.82 48.52 55.15 50.33 41.57 27.38 18.83 13.45 29.72 RELATIVE HUMIDITY (MEAN %) 39 37 31 20 16 12 16 16 15 18 20 26 22 RELATIVE HUMIDITY (MAX. %) 62 58 51 37 31 23 29 28 26 30 31 38 37 RELATIVE HUMIDITY (MIN. %) 24 24 18 12 9 7 10 11 9 12 13 18 14 RELATIVE HUMIDITY (MEAN% 03UTC) 60 56 50 35 30 23 29 28 26 30 29 36 36 RELATIVE HUMIDITY (MEAN% 09UTC) 30 30 25 14 12 9 12 12 11 14 15 21 17 RELATIVE HUMIDITY (MEAN% 15UTC) 36 33 25 17 14 8 12 11 13 17 24 28 20 RH=0 => RELATIVE HUMIDITY < 0.5% AMOUNT OF PRECIPITATION MM. 1.3 20.1 11.5 10.0 3.7 0.0 6.0 0.0 0.0 0.0 0.0 0.0 52.6 DAYS WITH PRECIPITATION >=10 0 1 0 1 0 0 0 0 0 0 0 0 2 DAYS WITH PRECIPITATION >= 5 0 1 1 1 0 0 1 0 0 0 0 0 4 DAYS WITH PRECIPITATION >= 1 0 3 3 1 1 0 1 0 0 0 0 0 9 DAYS WITH PRECIPITATION 8 5 7 2 2 0 1 0 0 0 0 2 27 GREATEST DAILY PRECIPITATION 0.7 14.0 9.1 10.0 3.0 0.0 6.0 0.0 0.0 0.0 0.0 0.0 14.0 DAY 6 12 10 23 17