STATION ANAR (40839) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 30 53 N LONGITUDE 55 15 E DATA PROCESSING CENTER ELEVATION 1408.8 M MEANS AND EXTREMES FOR THE YEAR 1986 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AIR TEMPERATURE (C) 7.9 9.6 11.3 18.1 24.3 28.6 28.6 26.1 21.7 19.4 11.4 5.5 17.7 MINIMUN AIR TEMPERATURE (C) -1.8 0.7 3.4 10.6 15.4 18.5 18.5 16.1 11.0 10.1 4.0 0.5 8.9 DAYS WITH MINIMUM TEMP. >=21 0 0 0 0 0 2 4 3 0 0 0 0 9 DAYS WITH MINIMUM TEMP. <=-4 13 1 1 0 0 0 0 0 0 0 3 6 24 DAYS WITH FREEZING MIN.<= 0 19 17 2 0 0 0 0 0 0 0 7 20 65 TEMPERATURE RECORDS LOWEST(C) -7.2 -4.6 -4.4 6.5 10.8 15.2 15.2 10.0 8.0 6.0 -4.0 -6.6 -7.2 DAY 26 21 18 1 1 10 13 12 11 18 15 13 MAXIMUM AIR TEMPERATURE (C) 13.8 15.2 16.3 25.5 32.1 36.7 36.2 34.0 31.1 28.5 18.6 11.3 24.9 DAYS WITH MAXIMUM TEMP. >=30 0 0 0 1 23 30 31 30 22 13 0 0 150 DAYS WITH MAXIMUM TEMP. <= 0 0 0 0 0 0 0 0 0 0 0 0 0 0 TEMPERATURE RECORDS HIGHEST(C) 20.0 20.4 24.5 31.2 36.8 40.4 40.0 37.8 35.4 33.4 25.6 22.0 40.4 DAY 15 28 25 19 25 22 26 1 29 4 3 30 DIF. BETWEEN (MAX.-MIN.) (C) 15.6 14.5 12.9 14.9 16.7 18.2 17.7 17.9 20.1 18.4 14.6 10.8 16.0 MEAN DAILY TEMP. (MDT) (C) 6.0 7.9 9.9 18.1 23.7 27.6 27.3 25.0 21.0 19.3 11.3 5.9 16.9 COOLING DEG. DAYS(BASE 21 0C) 0.0 0.0 0.0 3.6 90.5 198.8 195.8 125.6 17.4 15.7 0.0 0.0 647.4 HEATING DEG. DAYS(BASE 18 0C) 370.7 282.0 252.5 22.9 0.0 0.0 0.0 0.0 0.0 18.5 201.0 376.3 1523.9 DEWPOINT (MEAN C) -6.1 -4.4 -1.4 2.1 -1.1 -0.7 -1.2 -2.4 -6.6 -3.5 -1.6 -2.1 -2.4 MIXING RATIO (G/KG) 2.93 3.33 4.21 5.66 4.37 4.55 4.28 4.02 2.91 3.53 4.23 4.01 4.00 VAPOUR PRESSURE (HPA) 4.04 4.57 5.76 7.73 5.98 6.18 5.83 5.49 4.00 4.86 5.81 5.51 5.48 SATURATION DEF. (HPA) 7.29 8.16 8.51 13.98 26.12 35.20 35.28 30.27 23.95 19.38 8.77 4.24 18.43 RELATIVE HUMIDITY (MEAN %) 39 43 47 41 22 17 16 17 17 23 46 64 33 RELATIVE HUMIDITY (MAX. %) 53 69 70 68 41 30 25 27 31 37 66 83 50 RELATIVE HUMIDITY (MIN. %) 27 26 33 19 9 9 9 10 8 13 29 43 20 RELATIVE HUMIDITY (MEAN% 03UTC) 52 67 68 63 34 27 24 25 26 36 60 77 47 RELATIVE HUMIDITY (MEAN% 09UTC) 34 33 39 24 12 11 11 11 9 16 34 50 24 RELATIVE HUMIDITY (MEAN% 15UTC) 34 36 42 28 14 11 11 13 12 18 40 61 27 RH=0 => RELATIVE HUMIDITY < 0.5% AMOUNT OF PRECIPITATION MM. 1.3 13.1 36.6 19.2 0.0 0.0 0.0 0.0 0.0 0.0 6.2 92.1 168.5 DAYS WITH PRECIPITATION >=10 0 1 1 0 0 0 0 0 0 0 0 3 5 DAYS WITH PRECIPITATION >= 5 0 1 3 1 0 0 0 0 0 0 0 6 11 DAYS WITH PRECIPITATION >= 1 1 2 6 6 0 0 0 0 0 0 2 6 23 DAYS WITH PRECIPITATION 2 4 8 10 0 0 0 0 0 0 4 9 37 GREATEST DAILY PRECIPITATION 1.0 11.0 17.0 5.0 0.0 0.0 0.0 0.0 0.0 0.0 3.0 25.1 25.1 DAY 21 2 26 23 ** ** ** ** ** ** 22 2 DAY WITH THUNDER STORM 0 0 0 1 1 1 0 0 0 0 1 0 4 DAYS WITH SNOW OR SLEET 0 1 1 0 0 0 0 0 0 0 0 5 7 DAYS WITH DUST 2 2 4 1 9 1 11 11 5 0 2 6 54 WIND DIRECTION (PREVAILING) 180 225 45 270 270 270 360 360 360 225 225 225 360 PREVAILING WIND SPEED(KNOTS) 13.1 11.6 4.4 7.9 9.8 9.2 8.9 8.4 6.6 5.0 9.0 12.9 7.3 PREVAILING WIND PERCENT 10.3 11.4 11.0 13.9 21.0 18.4 35.1 34.0 19.2 13.3 12.1 9.7 13.0 CALMS PERCENT OF WIND 74.2 52.1 43.9 42.9 30.6 28.5 28.2 39.7 50.2 58.1 58.8 61.7 46.4 NO. OF WIND OBSERVATION 155 140 155 238 248 239 248 247 239 248 240 248 2645 VECTOR WIND DIRECTION (MEAN) 227 222 238 275 262 283 358 360 344 287 215 216 282 VECTOR WIND MAGNITUDE(KNOTS) 1.4 1.8 1.1 1.5 3.6 2.4 3.9 3.5 1.6 0.7 2.0 2.2 1.2 WIND STEADINESES (MEAN %) 45.2 48.6 26.8 38.5 59.0 42.1 73.6 77.8 53.3 31.8 58.8 61.1 30.0 WIND SPEED (MEAN KNOTS) 3.1 3.7 4.1 3.9 6.1 5.7 5.3 4.5 3.0 2.2 3.4 3.6 4.0 FASTEST WIND DIRECTION 180 220 200 270 220 280 360 360 30 280 180 210 210 FASTEST WIND SPEED (KNOTS) 19 19 23 25 23 21 17 19 16 19 21 27 27 DAY 15 10 8 10 5 1 5 9 8 5 30 20 DAYS WITH SKY CLEAR (0-2)/8 24 14 10 3 12 28 28 30 30 27 10 14 230 DAYS WITH P.CLOUDY (3-6)/8 5 12 14 20 14 2 3 1 0 4 14 9 98 DAYS WITH CLOUDY (7-8)/8 2 2 7 7 5 0 0 0 0 0 6 8 37 DAYS WITH VISIBILITY =< 2 KM 0 1 0 0 0 0 0 0 0 0 0 4 5 DURATION OF SUNSHINE HOURS 241.2 217.9 221.5 236.8 282.1 347.6 358.9 350.5 328.5 302.5 186.5 187.0 3261.0 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ANAR (40839) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 30 53 N LONGITUDE 55 15 E DATA PROCESSING CENTER ELEVATION 1408.8 M MEANS AND EXTREMES FOR THE YEAR 1986 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL MEAN QFE PRESSURE IN HPA 860.9 858.2 857.7 857.8 858.1 852.1 854.2 856.3 860.5 862.6 861.5 861.8 858.5 MAX. QFE PRESSURE IN HPA 868.8 866.0 866.3 865.1 864.0 860.3 858.2 860.7 866.4 869.2 868.6 870.1 870.1 DAY-HOUR 24- 6 22- 6 28- 6 4-21 20- 6 2- 6 16- 6 31-18 23- 6 15- 6 15- 6 7- 6 MIN. QFE PRESSURE IN HPA 847.6 850.7 850.5 852.3 853.2 845.7 849.5 851.2 856.2 857.7 853.6 850.8 845.7 DAY-HOUR 20-12 1-12 8-12 29-15 10-15 21-15 25-15 6-15 5-12 1-12 7-12 20-12 MEAN QNH PRESSURE IN HPA 1019.6 1016.5 1016.0 1016.1 1016.5 1009.5 1012.0 1014.4 1019.1 1021.6 1020.3 1020.8 1016.9 MAX. QNH PRESSURE IN HPA 1028.7 1025.5 1025.9 1024.5 1023.2 1019.0 1016.6 1019.4 1026.0 1029.2 1028.5 1030.2 1030.2 DAY-HOUR 24- 6 22- 6 28- 6 4-21 20- 6 2- 6 16- 6 31-18 23- 6 15- 6 15- 6 7- 6 MIN. QNH PRESSURE IN HPA 1004.4 1008.0 1007.7 1009.8 1010.8 1002.2 1006.6 1008.5 1014.3 1016.0 1011.3 1008.1 1002.2 DAY-HOUR 20-12 1-12 8-12 29-15 10-15 21-15 25-15 6-15 5-12 1-12 7-12 20-12 MEAN QFF PRESSURE IN HPA ****** ****** ****** 1008.6 1005.8 996.4 998.9 1002.6 1010.0 1013.7 1016.9 1020.9 ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** 1016.3 1013.0 1006.2 1003.9 1010.3 1016.8 1022.6 1029.5 1033.7 ****** DAY-HOUR **-** **-** **-** 15- 3 20- 3 2- 6 16- 3 31-21 23- 3 20- 3 16- 6 7- 6 MIN. QFF PRESSURE IN HPA ****** ****** ****** 1001.5 999.2 988.0 992.7 995.9 1003.8 1006.3 1005.9 1002.3 ****** DAY-HOUR **-** **-** **-** 19-12 31-15 21-15 25-21 5-12 29-12 1-12 7-12 20-12 PRESSURE AT HOUR 0000 UTC. MEAN QFE PRESSURE IN HPA ****** ****** ****** 857.8 858.1 852.4 854.1 856.2 860.2 862.4 861.5 861.7 ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** 863.1 862.4 858.8 856.3 859.0 865.3 866.5 867.5 868.2 ****** DAY ** ** ** 5 20 2 4 25 23 15 16 7 MIN. QFE PRESSURE IN HPA ****** ****** ****** 854.0 855.0 848.1 850.8 852.9 857.3 858.5 856.0 855.1 ****** DAY ** ** ** 30 4 20 26 5 6 1 7 31 MEAN QNH PRESSURE IN HPA ****** ****** ****** 1016.1 1016.5 1009.9 1011.9 1014.3 1018.9 1021.4 1020.3 1020.5 ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** 1022.2 1021.4 1017.3 1014.4 1017.5 1024.7 1026.1 1027.2 1028.0 ****** DAY ** ** ** 5 20 2 4 25 23 15 16 7 MIN. QNH PRESSURE IN HPA ****** ****** ****** 1011.8 1012.9 1005.0 1008.1 1010.5 1015.5 1016.9 1014.0 1013.0 ****** DAY ** ** ** 30 4 20 26 5 6 1 7 31 MEAN QFF PRESSURE IN HPA ****** ****** ****** 1008.4 1005.8 997.0 999.0 1002.5 1009.6 1012.9 1016.4 1020.0 ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** 1014.3 1012.0 1004.7 1003.0 1006.8 1015.5 1018.5 1026.9 1031.5 ****** DAY ** ** ** 15 20 3 23 30 23 20 16 7 MIN. QFF PRESSURE IN HPA ****** ****** ****** 1002.9 1001.9 991.1 993.3 997.1 1004.8 1007.3 1007.7 1006.6 ****** DAY ** ** ** 20 4 25 26 6 30 1 8 31 PRESSURE AT HOUR 0300 UTC. MEAN QFE PRESSURE IN HPA 861.5 858.7 858.2 858.5 859.0 853.3 855.1 857.1 861.2 863.5 862.2 862.2 859.2 MAX. QFE PRESSURE IN HPA 867.4 863.9 865.7 863.4 863.4 859.7 857.5 859.6 866.0 867.4 868.0 868.7 868.7 DAY 25 22 28 5 20 2 16 24 23 15 16 7 MIN. QFE PRESSURE IN HPA 851.0 853.5 852.2 854.8 856.1 849.4 851.6 853.4 858.2 859.6 856.6 855.7 849.4 DAY 20 16 8 30 31 20 21 5 4 1 7 20 MEAN QNH PRESSURE IN HPA 1020.4 1017.1 1016.5 1017.0 1017.5 1011.0 1013.0 1015.3 1020.0 1022.6 1021.2 1021.1 1017.7 MAX. QNH PRESSURE IN HPA 1027.1 1023.1 1025.2 1022.5 1022.5 1018.3 1015.8 1018.2 1025.5 1027.1 1027.8 1028.6 1028.6 DAY 25 22 28 5 20 2 16 24 23 15 16 7 MIN. QNH PRESSURE IN HPA 1008.3 1011.2 1009.7 1012.7 1014.2 1006.5 1009.0 1011.1 1016.6 1018.2 1014.7 1013.7 1006.5 DAY 20 16 8 30 31 20 21 5 4 1 7 20 MEAN QFF PRESSURE IN HPA 1020.7 1016.5 1014.5 1010.2 1007.3 998.3 1000.5 1004.3 1012.1 1016.0 1018.8 1021.9 1011.8 MAX. QFF PRESSURE IN HPA 1031.6 1023.7 1024.9 1016.3 1013.0 1006.2 1003.9 1008.4 1016.8 1022.6 1029.1 1032.4 1032.4 DAY 25 20 17 15 20 2 16 29 23 20 16 7 MIN. QFF PRESSURE IN HPA 1005.4 1007.2 1004.3 1005.4 1003.5 992.4 995.6 998.8 1008.2 1010.1 1011.1 1009.2 992.4 DAY 20 10 8 30 31 18 26 5 30 1 9 20 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ANAR (40839) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 30 53 N LONGITUDE 55 15 E DATA PROCESSING CENTER ELEVATION 1408.8 M MEANS AND EXTREMES FOR THE YEAR 1986 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 0600 UTC. MEAN QFE PRESSURE IN HPA 862.7 859.8 859.4 859.3 859.6 853.7 855.6 857.7 862.2 864.7 863.3 863.4 860.1 MAX. QFE PRESSURE IN HPA 868.8 866.0 866.3 864.0 864.0 860.3 858.2 860.4 866.4 869.2 868.6 870.1 870.1 DAY 24 22 28 5 20 2 16 24 23 15 15 7 MIN. QFE PRESSURE IN HPA 851.6 853.8 853.6 855.0 856.5 849.3 852.6 853.7 859.1 861.0 857.2 855.7 849.3 DAY 20 10 8 30 31 20 19 5 4 1 7 20 MEAN QNH PRESSURE IN HPA 1021.8 1018.4 1018.0 1017.8 1018.2 1011.4 1013.6 1016.0 1021.1 1024.0 1022.4 1022.5 1018.8 MAX. QNH PRESSURE IN HPA 1028.7 1025.5 1025.9 1023.2 1023.2 1019.0 1016.6 1019.1 1026.0 1029.2 1028.5 1030.2 1030.2 DAY 24 22 28 5 20 2 16 24 23 15 15 7 MIN. QNH PRESSURE IN HPA 1009.0 1011.5 1011.3 1012.9 1014.6 1006.4 1010.1 1011.4 1017.6 1019.8 1015.4 1013.7 1006.4 DAY 20 10 8 30 31 20 19 5 4 1 7 20 MEAN QFF PRESSURE IN HPA ****** ****** ****** 1010.3 1007.3 998.1 1000.0 1003.8 1011.6 1016.1 1019.2 1023.0 ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** 1015.8 1012.9 1006.2 1003.2 1008.2 1016.0 1022.2 1029.5 1033.7 ****** DAY ** ** ** 4 20 2 16 29 22 15 16 7 MIN. QFF PRESSURE IN HPA ****** ****** ****** 1005.0 1002.0 991.7 996.0 998.1 1007.8 1010.4 1011.3 1008.4 ****** DAY ** ** ** 30 31 22 19 5 4 1 7 20 PRESSURE AT HOUR 0900 UTC. MEAN QFE PRESSURE IN HPA 860.7 858.6 858.2 858.0 858.3 852.5 854.6 856.6 860.9 862.9 861.3 861.7 858.7 MAX. QFE PRESSURE IN HPA 867.2 864.8 865.5 862.8 862.8 859.3 856.8 859.4 865.2 866.9 867.0 868.4 868.4 DAY 24 22 27 15 20 2 16 24 22 15 15 7 MIN. QFE PRESSURE IN HPA 848.4 852.6 852.0 854.3 854.8 848.2 851.4 852.9 858.0 859.2 855.1 853.0 848.2 DAY 20 10 8 30 31 20 19 5 5 1 7 20 MEAN QNH PRESSURE IN HPA 1019.5 1017.0 1016.5 1016.3 1016.7 1010.0 1012.4 1014.7 1019.6 1021.9 1020.1 1020.6 1017.1 MAX. QNH PRESSURE IN HPA 1026.9 1024.1 1024.9 1021.8 1021.8 1017.8 1015.0 1017.9 1024.6 1026.6 1026.7 1028.3 1028.3 DAY 24 22 27 15 20 2 16 24 22 15 15 7 MIN. QNH PRESSURE IN HPA 1005.3 1010.1 1009.5 1012.1 1012.7 1005.1 1008.8 1010.5 1016.3 1017.7 1013.0 1010.6 1005.1 DAY 20 10 8 30 31 20 19 5 5 1 7 20 MEAN QFF PRESSURE IN HPA ****** ****** ****** 1008.3 1005.8 996.5 999.0 1002.6 1010.0 1013.2 1016.0 1020.2 ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** 1014.3 1012.2 1004.8 1002.3 1006.7 1014.8 1018.3 1026.0 1031.7 ****** DAY ** ** ** 15 20 3 15 29 23 15 15 7 MIN. QFF PRESSURE IN HPA ****** ****** ****** 1003.3 1000.4 990.8 993.8 996.7 1005.6 1008.1 1007.8 1005.0 ****** DAY ** ** ** 20 31 22 26 5 29 1 7 20 PRESSURE AT HOUR 1200 UTC. MEAN QFE PRESSURE IN HPA 859.4 856.7 856.4 856.3 856.8 850.8 853.2 855.2 859.2 861.2 860.0 860.7 857.2 MAX. QFE PRESSURE IN HPA 865.8 862.6 864.5 861.0 861.6 857.5 855.4 858.6 863.6 865.3 866.1 867.8 867.8 DAY 28 22 27 15 20 2 3 31 22 20 15 7 MIN. QFE PRESSURE IN HPA 847.6 850.7 850.5 852.5 853.2 845.9 850.0 851.7 856.2 857.7 853.6 850.8 845.9 DAY 20 1 8 30 11 20 21 5 5 1 7 20 MEAN QNH PRESSURE IN HPA 1018.0 1014.9 1014.5 1014.4 1014.9 1008.1 1010.8 1013.1 1017.8 1020.0 1018.6 1019.4 1015.4 MAX. QNH PRESSURE IN HPA 1025.3 1021.6 1023.8 1019.8 1020.5 1015.8 1013.4 1017.0 1022.8 1024.7 1025.6 1027.6 1027.6 DAY 28 22 27 15 20 2 3 31 22 20 15 7 MIN. QNH PRESSURE IN HPA 1004.4 1008.0 1007.7 1010.0 1010.8 1002.5 1007.2 1009.1 1014.3 1016.0 1011.3 1008.1 1002.5 DAY 20 1 8 30 11 20 21 5 5 1 7 20 MEAN QFF PRESSURE IN HPA ****** ****** ****** 1006.8 1004.3 995.2 998.0 1001.3 1008.4 1011.5 1014.6 1018.9 ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** 1013.4 1010.8 1003.1 1000.8 1007.3 1013.2 1016.7 1024.9 1031.3 ****** DAY ** ** ** 15 20 1 23 31 22 19 15 7 MIN. QFF PRESSURE IN HPA ****** ****** ****** 1001.5 1000.5 988.9 992.8 995.9 1003.8 1006.3 1005.9 1002.3 ****** DAY ** ** ** 19 31 20 26 5 29 1 7 20 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ANAR (40839) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 30 53 N LONGITUDE 55 15 E DATA PROCESSING CENTER ELEVATION 1408.8 M MEANS AND EXTREMES FOR THE YEAR 1986 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 1500 UTC. MEAN QFE PRESSURE IN HPA 860.0 857.0 856.6 856.7 856.9 850.5 853.0 855.1 859.3 861.5 860.7 861.4 857.4 MAX. QFE PRESSURE IN HPA 866.0 862.5 864.9 862.1 861.3 857.3 855.6 859.0 864.2 865.6 866.8 867.9 867.9 DAY 24 22 27 4 20 2 15 31 22 14 15 7 MIN. QFE PRESSURE IN HPA 848.4 852.4 850.6 852.3 853.2 845.7 849.5 851.2 856.4 858.0 854.5 852.8 845.7 DAY 20 1 8 29 10 21 25 6 29 1 7 20 MEAN QNH PRESSURE IN HPA 1018.6 1015.2 1014.7 1014.8 1015.1 1007.7 1010.6 1013.0 1017.8 1020.3 1019.4 1020.2 1015.6 MAX. QNH PRESSURE IN HPA 1025.5 1021.5 1024.3 1021.0 1020.1 1015.5 1013.6 1017.5 1023.5 1025.1 1026.4 1027.7 1027.7 DAY 24 22 27 4 20 2 15 31 22 14 15 7 MIN. QNH PRESSURE IN HPA 1005.3 1009.9 1007.8 1009.8 1010.8 1002.2 1006.6 1008.5 1014.5 1016.3 1012.3 1010.4 1002.2 DAY 20 1 8 29 10 21 25 6 29 1 7 20 MEAN QFF PRESSURE IN HPA 1019.1 1014.5 1012.7 1008.1 1004.8 995.0 998.2 1002.0 1009.8 1013.7 1017.0 1021.0 1009.6 MAX. QFF PRESSURE IN HPA 1030.0 1021.2 1022.6 1014.8 1010.7 1003.6 1001.7 1008.3 1015.3 1019.2 1027.8 1031.6 1031.6 DAY 24 20 27 4 20 1 15 31 22 20 15 7 MIN. QFF PRESSURE IN HPA 1002.9 1006.6 1003.2 1002.2 999.2 988.0 993.0 995.9 1005.7 1007.9 1009.5 1005.5 988.0 DAY 20 15 8 29 31 21 25 6 29 1 7 20 PRESSURE AT HOUR 1800 UTC. MEAN QFE PRESSURE IN HPA ****** ****** ****** 858.0 858.2 851.7 854.0 856.2 860.3 862.4 861.5 862.0 ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** 864.3 862.6 858.7 857.0 860.7 865.0 866.4 867.6 867.9 ****** DAY ** ** ** 4 19 1 31 31 22 14 15 7 MIN. QFE PRESSURE IN HPA ****** ****** ****** 853.3 854.0 847.4 850.3 852.0 857.6 859.2 855.4 855.1 ****** DAY ** ** ** 29 11 21 25 5 5 1 7 30 MEAN QNH PRESSURE IN HPA ****** ****** ****** 1016.3 1016.6 1009.1 1011.7 1014.2 1019.0 1021.4 1020.3 1020.9 ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** 1023.6 1021.6 1017.1 1015.2 1019.4 1024.4 1026.0 1027.4 1027.7 ****** DAY ** ** ** 4 19 1 31 31 22 14 15 7 MIN. QNH PRESSURE IN HPA ****** ****** ****** 1010.9 1011.8 1004.2 1007.5 1009.5 1015.9 1017.7 1013.4 1013.0 ****** DAY ** ** ** 29 11 21 25 5 5 1 7 30 MEAN QFF PRESSURE IN HPA ****** ****** ****** 1008.7 1005.6 995.7 998.2 1002.1 1009.4 1013.6 1017.1 1021.4 ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** 1016.3 1011.4 1004.2 1002.2 1010.3 1014.6 1019.3 1028.2 1031.6 ****** DAY ** ** ** 4 19 2 31 31 22 19 15 7 MIN. QFF PRESSURE IN HPA ****** ****** ****** 1002.6 1000.8 989.8 993.5 996.1 1005.2 1008.7 1008.4 1007.4 ****** DAY ** ** ** 29 31 24 21 5 29 6 7 30 PRESSURE AT HOUR 2100 UTC. MEAN QFE PRESSURE IN HPA ****** ****** ****** 858.1 858.3 852.0 854.3 856.4 860.4 862.4 861.5 861.9 ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** 865.1 862.8 858.9 857.4 860.6 865.0 866.4 867.5 867.7 ****** DAY ** ** ** 4 19 1 31 31 22 14 15 6 MIN. QFE PRESSURE IN HPA ****** ****** ****** 854.0 854.0 848.1 850.8 853.0 857.3 859.2 855.6 855.1 ****** DAY ** ** ** 29 11 21 25 5 29 1 7 30 MEAN QNH PRESSURE IN HPA ****** ****** ****** 1016.4 1016.7 1009.4 1012.1 1014.5 1019.1 1021.4 1020.4 1020.8 ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** 1024.5 1021.8 1017.4 1015.7 1019.3 1024.4 1026.0 1027.2 1027.5 ****** DAY ** ** ** 4 19 1 31 31 22 14 15 6 MIN. QNH PRESSURE IN HPA ****** ****** ****** 1011.8 1011.8 1005.0 1008.1 1010.6 1015.5 1017.7 1013.6 1013.0 ****** DAY ** ** ** 29 11 21 25 5 29 1 7 30 MEAN QFF PRESSURE IN HPA ****** ****** ****** 1008.3 1005.6 995.9 998.7 1002.5 1009.4 1012.7 1016.2 1020.5 ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** 1015.6 1012.2 1004.9 1003.0 1010.3 1014.7 1018.1 1026.2 1030.8 ****** DAY ** ** ** 4 19 2 31 31 22 19 15 7 MIN. QFF PRESSURE IN HPA ****** ****** ****** 1002.7 1001.2 990.5 992.7 996.9 1004.0 1007.9 1007.1 1006.0 ****** DAY ** ** ** 19 31 21 25 4 29 24 7 30 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ANAR (40839) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 30 53 N LONGITUDE 55 15 E DATA PROCESSING CENTER ELEVATION 1408.8 M MEANS AND EXTREMES FOR THE YEAR 1987 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AIR TEMPERATURE (C) 7.7 10.6 13.9 19.9 24.8 28.1 28.8 28.4 26.3 16.4 12.2 9.1 18.8 MINIMUN AIR TEMPERATURE (C) -0.3 2.1 6.8 10.8 15.7 17.6 18.8 18.3 16.7 8.3 3.1 0.6 9.9 DAYS WITH MINIMUM TEMP. >=21 0 0 0 0 0 2 5 3 4 0 0 0 14 DAYS WITH MINIMUM TEMP. <=-4 9 0 0 0 0 0 0 0 0 0 1 9 19 DAYS WITH FREEZING MIN.<= 0 21 12 2 0 0 0 0 0 0 0 10 15 60 TEMPERATURE RECORDS LOWEST(C) -5.6 -3.2 -1.4 2.6 8.0 14.0 14.6 14.6 11.2 0.2 -6.8 -10.4 -10.4 DAY 9 12 22 1 9 1 16 27 27 17 30 3 MAXIMUM AIR TEMPERATURE (C) 16.7 18.8 20.7 27.8 32.8 36.6 37.1 36.9 34.9 24.7 22.1 18.5 27.3 DAYS WITH MAXIMUM TEMP. >=30 0 0 0 14 27 30 31 31 29 8 0 0 170 DAYS WITH MAXIMUM TEMP. <= 0 0 0 0 0 0 0 0 0 0 0 0 0 0 TEMPERATURE RECORDS HIGHEST(C) 23.4 24.8 25.4 35.6 36.4 40.0 41.0 39.4 39.2 32.8 29.2 27.0 41.0 DAY 26 28 6 27 27 8 7 28 4 8 7 27 DIF. BETWEEN (MAX.-MIN.) (C) 17.0 16.7 13.9 17.0 17.1 19.0 18.3 18.6 18.2 16.4 19.0 17.9 17.4 MEAN DAILY TEMP. (MDT) (C) 8.2 10.5 13.8 19.3 24.2 27.1 28.0 27.6 25.8 16.5 12.6 9.6 18.6 COOLING DEG. DAYS(BASE 21 0C) 0.0 0.0 0.0 37.5 108.4 181.9 215.8 204.9 144.7 13.2 0.0 0.0 906.5 HEATING DEG. DAYS(BASE 18 0C) 303.0 210.6 131.2 44.0 0.0 0.0 0.0 0.0 0.0 90.8 168.6 261.4 1209.5 DEWPOINT (MEAN C) -7.1 -3.6 -1.9 -1.2 3.7 1.7 2.0 1.0 1.6 -0.7 -5.6 -7.6 -1.5 MIXING RATIO (G/KG) 2.71 3.54 4.27 4.25 6.04 5.47 5.58 5.02 5.11 4.52 3.07 2.73 4.36 VAPOUR PRESSURE (HPA) 3.75 4.87 5.83 5.82 8.25 7.45 7.59 6.84 6.98 6.21 4.23 3.76 5.96 SATURATION DEF. (HPA) 7.69 8.89 10.81 19.38 24.91 32.84 34.44 34.00 29.38 14.33 11.69 9.13 19.79 RELATIVE HUMIDITY (MEAN %) 38 41 38 28 28 22 22 19 22 36 32 33 30 RELATIVE HUMIDITY (MAX. %) 58 63 59 47 45 40 36 31 35 55 48 49 47 RELATIVE HUMIDITY (MIN. %) 19 23 23 14 15 10 11 10 13 21 18 18 16 RELATIVE HUMIDITY (MEAN% 03UTC) 53 59 53 43 40 32 34 30 34 49 47 44 43 RELATIVE HUMIDITY (MEAN% 09UTC) 25 28 27 18 19 13 13 12 15 25 21 23 20 RELATIVE HUMIDITY (MEAN% 15UTC) 31 31 30 19 23 15 16 13 16 30 26 27 23 RH=0 => RELATIVE HUMIDITY < 0.5% AMOUNT OF PRECIPITATION MM. 0.0 0.6 8.9 0.0 11.2 1.0 8.3 0.0 0.0 2.3 0.0 0.0 32.3 DAYS WITH PRECIPITATION >=10 0 0 0 0 1 0 0 0 0 0 0 0 1 DAYS WITH PRECIPITATION >= 5 0 0 0 0 1 0 1 0 0 0 0 0 2 DAYS WITH PRECIPITATION >= 1 0 0 3 0 1 1 2 0 0 1 0 0 8 DAYS WITH PRECIPITATION 0 2 5 0 2 1 4 0 0 3 0 0 17 GREATEST DAILY PRECIPITATION 0.0 0.4 4.0 0.0 11.0 1.0 6.0 0.0 0.0 2.0 0.0 0.0 11.0 DAY ** 22 27 ** 31 1 28 ** ** 27 ** ** DAY WITH THUNDER STORM 0 0 0 0 1 0 3 0 0 0 0 0 4 DAYS WITH SNOW OR SLEET 0 0 0 0 0 0 0 0 0 0 0 0 0 DAYS WITH DUST 2 0 8 4 7 1 6 2 2 1 0 1 34 WIND DIRECTION (PREVAILING) 225 225 225 270 315 360 45 360 45 225 225 225 225 PREVAILING WIND SPEED(KNOTS) 8.7 10.0 12.7 9.3 9.4 8.2 6.6 7.5 6.4 6.5 6.5 10.6 9.0 PREVAILING WIND PERCENT 15.3 18.8 27.0 17.1 11.7 15.8 15.0 20.6 10.8 10.5 9.2 17.9 12.3 CALMS PERCENT OF WIND 57.3 49.1 33.1 49.2 52.4 59.6 43.3 45.6 52.1 60.5 75.4 55.0 52.7 NO. OF WIND OBSERVATION 248 224 248 240 248 240 247 248 240 248 240 240 2911 VECTOR WIND DIRECTION (MEAN) 212 223 224 256 330 8 346 357 320 295 236 205 251 VECTOR WIND MAGNITUDE(KNOTS) 2.8 3.0 5.6 2.6 1.3 1.9 1.5 2.0 1.1 0.6 0.5 3.2 1.2 WIND STEADINESES (MEAN %) 75.7 63.8 75.7 54.2 36.1 65.5 37.5 54.1 34.4 22.2 33.3 80.0 30.8 WIND SPEED (MEAN KNOTS) 3.7 4.7 7.4 4.8 3.6 2.9 4.0 3.7 3.2 2.7 1.5 4.0 3.9 FASTEST WIND DIRECTION 210 190 220 210 320 360 250 330 330 180 180 210 210 FASTEST WIND SPEED (KNOTS) 25 19 27 31 21 16 23 16 17 16 16 23 31 DAY 7 4 19 5 12 27 27 7 27 27 7 24 DAYS WITH SKY CLEAR (0-2)/8 21 18 12 20 20 29 27 30 27 17 26 22 269 DAYS WITH P.CLOUDY (3-6)/8 10 8 15 8 8 1 4 1 3 12 3 8 81 DAYS WITH CLOUDY (7-8)/8 0 2 4 2 3 0 0 0 0 2 1 0 14 DAYS WITH VISIBILITY =< 2 KM 2 1 4 1 0 0 0 0 0 0 0 0 8 DURATION OF SUNSHINE HOURS 275.4 234.2 235.6 294.8 280.3 354.8 346.5 359.0 299.8 255.0 275.1 247.0 3457.5 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ANAR (40839) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 30 53 N LONGITUDE 55 15 E DATA PROCESSING CENTER ELEVATION 1408.8 M MEANS AND EXTREMES FOR THE YEAR 1987 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL MEAN QFE PRESSURE IN HPA 862.8 860.5 855.8 858.9 858.2 855.0 854.4 854.2 857.6 862.7 863.4 862.2 858.8 MAX. QFE PRESSURE IN HPA 870.8 869.0 863.2 865.6 863.9 861.2 859.3 860.6 865.4 869.2 872.7 873.7 873.7 DAY-HOUR 12- 6 1- 6 24- 6 22- 6 1- 6 28- 6 30- 6 7- 6 26- 6 17- 6 30- 6 1- 6 MIN. QFE PRESSURE IN HPA 854.2 851.8 847.3 851.8 852.3 849.0 846.6 847.8 852.2 855.5 856.8 851.9 846.6 DAY-HOUR 2-12 10-12 14-12 4-12 6-12 11-15 3-12 29-15 1-15 4-12 7-12 30-12 MEAN QNH PRESSURE IN HPA 1021.8 1019.2 1013.8 1017.3 1016.6 1012.8 1012.2 1011.9 1015.9 1021.7 1022.5 1021.2 1017.3 MAX. QNH PRESSURE IN HPA 1031.0 1029.0 1022.3 1025.1 1023.1 1020.0 1017.8 1019.3 1024.8 1029.2 1033.2 1034.4 1034.4 DAY-HOUR 12- 6 1- 6 24- 6 22- 6 1- 6 28- 6 30- 6 7- 6 26- 6 17- 6 30- 6 1- 6 MIN. QNH PRESSURE IN HPA 1012.0 1009.2 1004.1 1009.2 1009.8 1006.0 1003.3 1004.6 1009.7 1013.5 1015.0 1009.3 1003.3 DAY-HOUR 2-12 10-12 14-12 4-12 6-12 11-15 3-12 29-15 1-15 4-12 7-12 30-12 MEAN QFF PRESSURE IN HPA 1020.8 1016.3 1008.7 1009.1 1005.4 1000.0 999.0 998.9 1004.0 1015.3 1018.7 1019.3 1009.6 MAX. QFF PRESSURE IN HPA 1031.9 1027.8 1019.9 1017.9 1014.5 1012.2 1007.9 1005.8 1015.4 1027.4 1036.5 1038.8 1038.8 DAY-HOUR 17- 6 1- 6 22- 6 8- 3 1- 3 1- 3 29- 3 7- 3 26- 3 17- 3 30- 3 1- 3 MIN. QFF PRESSURE IN HPA 1007.8 1002.6 996.9 1000.3 998.3 991.6 988.5 991.0 994.9 1003.1 1006.7 1004.7 988.5 DAY-HOUR 7- 0 10-12 14-12 19-12 23-12 9-12 3-12 29-12 1-12 5- 0 7-12 30-12 PRESSURE AT HOUR 0000 UTC. MEAN QFE PRESSURE IN HPA 862.6 860.8 855.8 858.8 858.3 855.1 854.5 854.2 857.6 862.7 863.3 862.6 858.9 MAX. QFE PRESSURE IN HPA 868.1 866.9 861.4 862.4 862.2 860.2 858.0 859.8 863.6 867.6 870.8 871.8 871.8 DAY 18 1 25 23 1 1 29 7 26 17 30 1 MIN. QFE PRESSURE IN HPA 854.6 855.0 849.8 852.0 853.0 850.5 849.1 850.8 854.3 857.0 859.0 856.2 849.1 DAY 3 10 20 5 23 10 3 29 1 9 11 30 MEAN QNH PRESSURE IN HPA 1021.7 1019.5 1013.8 1017.3 1016.7 1013.0 1012.4 1012.0 1015.9 1021.7 1022.4 1021.6 1017.3 MAX. QNH PRESSURE IN HPA 1027.9 1026.6 1020.2 1021.4 1021.2 1018.9 1016.3 1018.4 1022.8 1027.4 1031.0 1032.2 1032.2 DAY 18 1 25 23 1 1 29 7 26 17 30 1 MIN. QNH PRESSURE IN HPA 1012.4 1012.9 1006.9 1009.5 1010.6 1007.7 1006.1 1008.1 1012.1 1015.2 1017.5 1014.3 1006.1 DAY 3 10 20 5 23 10 3 29 1 9 11 30 MEAN QFF PRESSURE IN HPA 1019.7 1016.0 1008.2 1009.0 1005.5 1000.4 999.1 999.0 1003.6 1014.8 1017.8 1019.1 1009.3 MAX. QFF PRESSURE IN HPA 1027.9 1024.6 1018.6 1015.9 1012.7 1008.3 1005.1 1004.1 1012.4 1024.4 1034.7 1036.0 1036.0 DAY 13 23 23 8 1 1 29 7 26 29 30 1 MIN. QFF PRESSURE IN HPA 1007.8 1005.7 999.4 1001.5 998.8 993.2 991.4 993.3 997.5 1003.1 1009.4 1007.9 991.4 DAY 7 10 14 20 23 10 3 30 1 5 8 29 PRESSURE AT HOUR 0300 UTC. MEAN QFE PRESSURE IN HPA 863.3 861.4 856.5 859.9 859.4 856.1 855.5 855.2 858.7 863.4 864.1 863.0 859.7 MAX. QFE PRESSURE IN HPA 869.2 867.8 861.5 863.8 863.1 861.0 859.0 860.5 864.6 868.2 871.3 872.5 872.5 DAY 12 1 2 22 1 28 29 7 26 17 30 1 MIN. QFE PRESSURE IN HPA 855.6 855.6 850.2 852.6 854.2 851.2 850.2 851.8 855.1 857.3 860.0 856.1 850.2 DAY 3 10 14 5 23 10 3 29 2 9 11 30 MEAN QNH PRESSURE IN HPA 1022.4 1020.3 1014.6 1018.5 1017.9 1014.1 1013.4 1013.2 1017.1 1022.6 1023.4 1022.1 1018.3 MAX. QNH PRESSURE IN HPA 1029.2 1027.6 1020.4 1023.0 1022.2 1019.8 1017.5 1019.2 1023.9 1028.0 1031.6 1033.0 1033.0 DAY 12 1 2 22 1 28 29 7 26 17 30 1 MIN. QNH PRESSURE IN HPA 1013.6 1013.6 1007.4 1010.1 1012.0 1008.5 1007.4 1009.2 1013.0 1015.5 1018.6 1014.2 1007.4 DAY 3 10 14 5 23 10 3 29 2 9 11 30 MEAN QFF PRESSURE IN HPA 1022.5 1018.5 1010.3 1011.1 1007.4 1001.9 1000.7 1001.0 1006.2 1017.5 1020.9 1021.7 1011.6 MAX. QFF PRESSURE IN HPA 1030.3 1026.6 1019.9 1017.9 1014.5 1012.2 1007.9 1005.8 1015.4 1027.4 1036.5 1038.8 1038.8 DAY 13 23 23 8 1 1 29 7 26 17 30 1 MIN. QFF PRESSURE IN HPA 1010.7 1007.7 1001.1 1003.6 1000.5 994.5 993.4 996.3 999.8 1005.6 1012.5 1009.2 993.4 DAY 7 10 14 20 23 10 3 29 2 9 8 29 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ANAR (40839) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 30 53 N LONGITUDE 55 15 E DATA PROCESSING CENTER ELEVATION 1408.8 M MEANS AND EXTREMES FOR THE YEAR 1987 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 0600 UTC. MEAN QFE PRESSURE IN HPA 864.7 862.5 857.4 860.7 859.9 856.6 855.9 855.8 859.7 864.4 865.3 864.1 860.6 MAX. QFE PRESSURE IN HPA 870.8 869.0 863.2 865.6 863.9 861.2 859.3 860.6 865.4 869.2 872.7 873.7 873.7 DAY 12 1 24 22 1 28 30 7 26 17 30 1 MIN. QFE PRESSURE IN HPA 857.5 856.3 850.5 854.4 855.6 851.8 850.4 852.0 856.3 858.7 861.4 856.8 850.4 DAY 3 10 14 5 23 13 3 29 2 4 7 30 MEAN QNH PRESSURE IN HPA 1024.0 1021.5 1015.7 1019.5 1018.5 1014.7 1013.9 1013.9 1018.3 1023.7 1024.7 1023.4 1019.3 MAX. QNH PRESSURE IN HPA 1031.0 1029.0 1022.3 1025.1 1023.1 1020.0 1017.8 1019.3 1024.8 1029.2 1033.2 1034.4 1034.4 DAY 12 1 24 22 1 28 30 7 26 17 30 1 MIN. QNH PRESSURE IN HPA 1015.8 1014.4 1007.7 1012.2 1013.6 1009.2 1007.6 1009.5 1014.4 1017.1 1020.2 1015.0 1007.6 DAY 3 10 14 5 23 13 3 29 2 4 7 30 MEAN QFF PRESSURE IN HPA 1023.9 1019.1 1010.7 1011.1 1007.2 1001.5 1000.4 1000.5 1006.4 1017.5 1021.2 1022.1 1011.8 MAX. QFF PRESSURE IN HPA 1031.9 1027.8 1019.9 1017.5 1014.2 1011.9 1007.4 1005.5 1015.1 1026.2 1035.9 1038.6 1038.6 DAY 17 1 22 1 1 1 29 7 26 17 30 2 MIN. QFF PRESSURE IN HPA 1014.7 1007.9 1001.2 1002.9 1001.1 995.8 993.1 996.2 1000.5 1007.6 1012.2 1009.5 993.1 DAY 3 10 14 20 28 9 3 29 2 4 8 24 PRESSURE AT HOUR 0900 UTC. MEAN QFE PRESSURE IN HPA 862.8 860.9 856.0 859.2 858.5 855.6 854.8 854.6 858.1 862.7 863.3 862.1 859.0 MAX. QFE PRESSURE IN HPA 869.0 867.0 861.8 864.4 862.6 860.5 858.0 858.9 864.0 867.3 871.0 872.0 872.0 DAY 12 1 24 22 1 1 29 7 26 17 30 1 MIN. QFE PRESSURE IN HPA 856.3 854.7 848.7 853.2 854.7 851.0 848.8 850.5 854.8 857.3 858.5 854.5 848.7 DAY 3 10 14 5 23 13 3 29 1 4 7 30 MEAN QNH PRESSURE IN HPA 1021.9 1019.7 1014.0 1017.7 1016.9 1013.5 1012.6 1012.4 1016.5 1021.7 1022.4 1021.0 1017.5 MAX. QNH PRESSURE IN HPA 1029.0 1026.7 1020.7 1023.7 1021.6 1019.2 1016.3 1017.4 1023.2 1027.0 1031.3 1032.4 1032.4 DAY 12 1 24 22 1 1 29 7 26 17 30 1 MIN. QNH PRESSURE IN HPA 1014.4 1012.6 1005.7 1010.8 1012.6 1008.3 1005.8 1007.7 1012.7 1015.5 1016.9 1012.3 1005.7 DAY 3 10 14 5 23 13 3 29 1 4 7 30 MEAN QFF PRESSURE IN HPA 1019.9 1016.1 1008.4 1009.1 1005.3 1000.4 999.1 999.0 1003.9 1014.5 1017.6 1018.3 1009.3 MAX. QFF PRESSURE IN HPA 1028.7 1025.8 1018.3 1015.9 1012.7 1010.1 1005.0 1003.8 1012.2 1024.1 1033.6 1035.6 1035.6 DAY 12 7 22 22 1 1 29 4 26 18 30 1 MIN. QFF PRESSURE IN HPA 1011.1 1006.2 998.7 1001.9 999.8 993.8 990.8 993.1 997.2 1005.2 1008.6 1007.1 990.8 DAY 7 10 14 20 23 9 3 29 1 4 7 24 PRESSURE AT HOUR 1200 UTC. MEAN QFE PRESSURE IN HPA 861.3 858.8 854.4 857.2 856.7 853.9 853.2 852.9 856.1 861.0 861.8 860.5 857.3 MAX. QFE PRESSURE IN HPA 867.8 865.1 860.0 862.8 860.8 858.7 857.0 857.2 861.9 866.1 869.8 870.2 870.2 DAY 12 1 24 22 1 28 29 6 26 16 30 1 MIN. QFE PRESSURE IN HPA 854.2 851.8 847.3 851.8 852.3 849.1 846.6 848.2 852.4 855.5 856.8 851.9 846.6 DAY 2 10 14 4 6 9 3 29 1 4 7 30 MEAN QNH PRESSURE IN HPA 1020.1 1017.2 1012.2 1015.5 1014.8 1011.6 1010.8 1010.4 1014.2 1019.8 1020.7 1019.2 1015.6 MAX. QNH PRESSURE IN HPA 1027.6 1024.5 1018.6 1021.8 1019.6 1017.1 1015.2 1015.4 1020.8 1025.6 1029.9 1030.3 1030.3 DAY 12 1 24 22 1 28 29 6 26 16 30 1 MIN. QNH PRESSURE IN HPA 1012.0 1009.2 1004.1 1009.2 1009.8 1006.1 1003.3 1005.1 1009.9 1013.5 1015.0 1009.3 1003.3 DAY 2 10 14 4 6 9 3 29 1 4 7 30 MEAN QFF PRESSURE IN HPA 1018.0 1013.6 1006.8 1007.0 1003.6 999.0 997.7 997.4 1001.9 1012.9 1016.2 1016.4 1007.5 MAX. QFF PRESSURE IN HPA 1027.4 1022.8 1016.6 1014.3 1011.1 1007.3 1004.7 1002.4 1010.4 1022.6 1033.2 1033.7 1033.7 DAY 12 7 22 22 1 1 29 5 25 28 30 1 MIN. QFF PRESSURE IN HPA 1010.7 1002.6 996.9 1000.3 998.3 991.6 988.5 991.0 994.9 1003.7 1006.7 1004.7 988.5 DAY 2 10 14 19 23 9 3 29 1 4 7 30 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ANAR (40839) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 30 53 N LONGITUDE 55 15 E DATA PROCESSING CENTER ELEVATION 1408.8 M MEANS AND EXTREMES FOR THE YEAR 1987 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 1500 UTC. MEAN QFE PRESSURE IN HPA 862.1 859.2 854.8 857.4 856.8 853.5 853.1 852.7 856.1 861.5 862.4 861.3 857.6 MAX. QFE PRESSURE IN HPA 868.2 865.8 860.7 862.8 860.8 858.6 858.2 857.5 862.2 867.0 870.6 871.0 871.0 DAY 12 1 24 22 31 28 29 7 25 16 30 1 MIN. QFE PRESSURE IN HPA 854.7 852.0 848.1 852.3 852.8 849.0 846.9 847.8 852.2 855.8 857.3 852.8 846.9 DAY 2 10 14 4 22 11 3 29 1 4 7 30 MEAN QNH PRESSURE IN HPA 1021.0 1017.7 1012.7 1015.6 1015.0 1011.2 1010.7 1010.3 1014.2 1020.4 1021.4 1020.1 1015.9 MAX. QNH PRESSURE IN HPA 1028.0 1025.3 1019.4 1021.8 1019.6 1017.0 1016.6 1015.8 1021.2 1026.7 1030.8 1031.3 1031.3 DAY 12 1 24 22 31 28 29 7 25 16 30 1 MIN. QNH PRESSURE IN HPA 1012.6 1009.5 1005.0 1009.8 1010.4 1006.0 1003.6 1004.6 1009.7 1013.8 1015.5 1010.4 1003.6 DAY 2 10 14 4 22 11 3 29 1 4 7 30 MEAN QFF PRESSURE IN HPA 1020.9 1015.8 1008.3 1008.1 1004.5 998.7 998.1 998.1 1003.2 1015.2 1019.0 1019.4 1009.1 MAX. QFF PRESSURE IN HPA 1029.5 1024.5 1018.6 1016.2 1011.6 1006.5 1006.4 1003.1 1012.4 1025.1 1036.3 1036.6 1036.6 DAY 12 7 22 22 1 1 29 7 25 17 30 1 MIN. QFF PRESSURE IN HPA 1013.5 1004.1 999.4 1001.9 999.4 992.5 990.2 991.7 996.0 1005.6 1009.1 1007.2 990.2 DAY 26 10 14 20 22 10 3 29 1 4 7 30 PRESSURE AT HOUR 1800 UTC. MEAN QFE PRESSURE IN HPA 862.9 860.3 855.8 858.8 858.0 854.4 854.2 853.9 857.4 862.9 863.4 862.2 858.7 MAX. QFE PRESSURE IN HPA 868.6 866.8 861.2 863.8 862.0 859.7 859.0 859.4 863.5 868.0 871.8 871.5 871.8 DAY 12 1 1 22 31 28 28 7 25 16 30 1 MIN. QFE PRESSURE IN HPA 855.4 853.9 849.9 853.0 853.7 849.8 848.0 849.4 853.4 857.1 858.6 854.4 848.0 DAY 2 10 13 4 22 9 3 29 2 4 7 30 MEAN QNH PRESSURE IN HPA 1022.0 1019.0 1013.8 1017.2 1016.4 1012.2 1011.9 1011.6 1015.6 1021.9 1022.6 1021.1 1017.1 MAX. QNH PRESSURE IN HPA 1028.5 1026.4 1020.0 1023.0 1020.9 1018.3 1017.5 1017.9 1022.6 1027.8 1032.2 1031.8 1032.2 DAY 12 1 1 22 31 28 28 7 25 16 30 1 MIN. QNH PRESSURE IN HPA 1013.4 1011.6 1007.0 1010.6 1011.4 1006.9 1004.9 1006.5 1011.1 1015.3 1017.0 1012.2 1004.9 DAY 2 10 13 4 22 9 3 29 2 4 7 30 MEAN QFF PRESSURE IN HPA 1021.7 1016.4 1008.8 1008.7 1005.0 998.8 998.3 998.3 1003.8 1015.7 1019.2 1019.7 1009.5 MAX. QFF PRESSURE IN HPA 1029.9 1025.1 1017.2 1016.0 1011.9 1005.7 1007.0 1003.9 1013.3 1025.6 1035.6 1036.4 1036.4 DAY 12 1 22 22 31 1 28 7 25 28 30 1 MIN. QFF PRESSURE IN HPA 1012.9 1006.3 1001.5 1002.0 999.6 992.4 990.9 992.7 996.8 1005.4 1009.1 1008.8 990.9 DAY 6 10 14 19 23 9 2 29 2 4 7 30 PRESSURE AT HOUR 2100 UTC. MEAN QFE PRESSURE IN HPA 862.8 860.4 855.9 859.0 858.2 854.6 854.3 854.2 857.6 862.8 863.5 862.0 858.8 MAX. QFE PRESSURE IN HPA 868.3 866.2 861.1 863.8 860.9 860.0 859.0 859.2 863.4 868.0 871.8 871.3 871.8 DAY 17 1 1 22 1 28 29 7 25 16 30 1 MIN. QFE PRESSURE IN HPA 854.8 854.9 849.8 852.4 853.2 850.3 848.6 850.0 854.0 857.1 859.0 854.4 848.6 DAY 2 10 19 4 22 9 2 29 1 4 7 30 MEAN QNH PRESSURE IN HPA 1021.9 1019.1 1014.0 1017.5 1016.6 1012.5 1012.1 1011.9 1015.9 1021.8 1022.7 1020.9 1017.2 MAX. QNH PRESSURE IN HPA 1028.2 1025.7 1019.9 1023.0 1019.7 1018.6 1017.5 1017.7 1022.5 1027.8 1032.2 1031.6 1032.2 DAY 17 1 1 22 1 28 29 7 25 16 30 1 MIN. QNH PRESSURE IN HPA 1012.7 1012.8 1006.9 1009.9 1010.8 1007.5 1005.6 1007.2 1011.8 1015.3 1017.5 1012.2 1005.6 DAY 2 10 19 4 22 9 2 29 1 4 7 30 MEAN QFF PRESSURE IN HPA 1020.0 1015.4 1008.4 1008.8 1005.0 999.2 998.5 998.4 1003.4 1014.7 1018.1 1018.1 1009.0 MAX. QFF PRESSURE IN HPA 1029.1 1024.4 1017.5 1016.2 1010.7 1006.5 1006.0 1003.2 1012.2 1025.1 1035.5 1035.1 1035.5 DAY 12 22 22 22 1 28 29 7 25 28 30 1 MIN. QFF PRESSURE IN HPA 1009.0 1006.6 999.5 1002.0 998.8 993.5 990.1 992.5 997.1 1003.1 1007.8 1008.2 990.1 DAY 6 9 19 19 22 11 2 29 1 4 7 13 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ANAR (40839) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 30 53 N LONGITUDE 55 15 E DATA PROCESSING CENTER ELEVATION 1408.8 M MEANS AND EXTREMES FOR THE YEAR 1988 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AIR TEMPERATURE (C) 6.0 8.3 14.2 18.5 25.6 29.5 31.9 29.7 26.4 18.7 13.9 11.1 19.5 MINIMUN AIR TEMPERATURE (C) -0.8 2.1 6.8 10.9 16.1 18.9 22.4 19.2 15.0 8.9 4.0 2.2 10.5 DAYS WITH MINIMUM TEMP. >=21 0 0 0 0 0 4 21 6 1 0 0 0 32 DAYS WITH MINIMUM TEMP. <=-4 8 2 0 0 0 0 0 0 0 0 4 2 16 DAYS WITH FREEZING MIN.<= 0 17 12 3 0 0 0 0 0 0 0 10 16 58 TEMPERATURE RECORDS LOWEST(C) -10.2 -5.0 -1.4 2.4 13.6 15.0 19.0 9.0 9.0 4.6 -7.0 -10.0 -10.2 DAY 4 8 16 4 13 9 31 11 29 30 24 30 MAXIMUM AIR TEMPERATURE (C) 13.3 15.5 21.7 26.4 34.0 37.9 39.8 37.4 34.4 28.4 22.1 17.3 27.4 DAYS WITH MAXIMUM TEMP. >=30 0 0 0 5 31 30 31 31 28 9 0 0 165 DAYS WITH MAXIMUM TEMP. <= 0 0 0 0 0 0 0 0 0 0 0 0 0 0 TEMPERATURE RECORDS HIGHEST(C) 20.0 21.0 28.6 31.0 39.0 41.8 42.6 40.8 38.6 32.0 27.6 21.8 42.6 DAY 28 2 21 13 28 19 21 4 12 20 11 12 DIF. BETWEEN (MAX.-MIN.) (C) 14.1 13.4 14.9 15.5 17.9 19.0 17.4 18.2 19.4 19.5 18.1 15.1 16.9 MEAN DAILY TEMP. (MDT) (C) 6.3 8.8 14.3 18.6 25.1 28.4 31.1 28.3 24.7 18.7 13.0 9.8 18.9 COOLING DEG. DAYS(BASE 21 0C) 0.0 0.0 0.8 9.7 126.4 223.1 312.9 226.5 115.2 1.0 0.0 0.0 1015.7 HEATING DEG. DAYS(BASE 18 0C) 363.9 267.5 124.4 33.5 0.0 0.0 0.0 0.0 0.0 9.5 153.5 255.1 1207.3 DEWPOINT (MEAN C) -5.6 -2.5 -3.2 -0.4 -4.7 -4.5 2.7 -0.5 -2.6 -4.0 -7.7 -5.5 -3.2 MIXING RATIO (G/KG) 3.21 3.92 3.83 4.64 3.41 3.36 5.78 4.56 3.83 3.49 2.65 3.24 3.83 VAPOUR PRESSURE (HPA) 4.40 5.38 5.23 6.34 4.67 4.59 7.82 6.20 5.24 4.81 3.66 4.45 5.23 SATURATION DEF. (HPA) 5.57 6.30 12.13 16.29 30.01 39.12 41.87 37.83 32.16 18.33 13.66 9.62 21.91 RELATIVE HUMIDITY (MEAN %) 50 51 35 32 16 12 18 16 17 24 25 34 28 RELATIVE HUMIDITY (MAX. %) 71 74 56 53 31 22 30 28 30 39 43 50 44 RELATIVE HUMIDITY (MIN. %) 31 29 18 16 7 6 10 9 8 12 13 22 15 RELATIVE HUMIDITY (MEAN% 03UTC) 63 67 49 50 26 21 28 28 30 37 40 47 41 RELATIVE HUMIDITY (MEAN% 09UTC) 36 38 25 20 9 8 11 11 11 15 17 27 19 RELATIVE HUMIDITY (MEAN% 15UTC) 44 46 27 22 9 8 12 12 12 18 22 33 22 RH=0 => RELATIVE HUMIDITY < 0.5% AMOUNT OF PRECIPITATION MM. 38.8 14.7 24.0 6.8 0.0 0.0 1.0 0.0 0.0 0.0 4.0 1.0 90.3 DAYS WITH PRECIPITATION >=10 2 0 1 0 0 0 0 0 0 0 0 0 3 DAYS WITH PRECIPITATION >= 5 3 2 2 0 0 0 0 0 0 0 0 0 7 DAYS WITH PRECIPITATION >= 1 4 3 3 4 0 0 1 0 0 0 1 1 17 DAYS WITH PRECIPITATION 6 4 4 5 0 0 1 0 0 0 1 1 22 GREATEST DAILY PRECIPITATION 16.2 7.0 15.0 2.4 0.0 0.0 1.0 0.0 0.0 0.0 4.0 1.0 16.2 DAY 9 3 23 26 ** ** 9 ** ** ** 30 26 DAY WITH THUNDER STORM 0 0 2 2 0 0 0 0 0 0 0 0 4 DAYS WITH SNOW OR SLEET 2 0 0 0 0 0 0 0 0 0 0 0 2 DAYS WITH DUST 1 1 8 4 6 2 7 0 0 0 1 2 32 WIND DIRECTION (PREVAILING) 225 180 225 270 270 360 360 360 45 225 225 225 225 PREVAILING WIND SPEED(KNOTS) 9.0 13.2 12.5 8.9 8.9 6.6 8.7 8.0 5.4 6.2 9.0 13.8 9.0 PREVAILING WIND PERCENT 14.5 12.5 17.7 14.2 23.0 14.8 17.0 19.8 17.3 13.3 12.7 18.0 13.1 CALMS PERCENT OF WIND 52.0 50.9 41.5 48.8 32.3 43.2 40.7 43.7 52.0 68.1 62.0 57.5 49.0 NO. OF WIND OBSERVATION 248 232 248 240 248 229 241 222 173 248 213 167 2709 VECTOR WIND DIRECTION (MEAN) 224 212 248 254 282 296 354 353 359 263 224 210 255 VECTOR WIND MAGNITUDE(KNOTS) 2.7 2.2 3.5 2.1 3.5 1.2 1.6 1.8 1.6 0.7 2.0 4.2 1.5 WIND STEADINESES (MEAN %) 64.3 51.2 59.3 48.8 67.3 27.3 34.8 47.4 55.2 36.8 60.6 80.8 35.7 WIND SPEED (MEAN KNOTS) 4.2 4.3 5.9 4.3 5.2 4.4 4.6 3.8 2.9 1.9 3.3 5.2 4.2 FASTEST WIND DIRECTION 250 180 330 280 270 200 330 270 270 240 180 200 180 FASTEST WIND SPEED (KNOTS) 23 31 29 25 19 21 19 16 14 14 19 25 31 DAY 26 3 14 23 3 30 27 31 2 31 14 27 DAYS WITH SKY CLEAR (0-2)/8 18 11 18 12 27 28 28 27 30 28 19 16 262 DAYS WITH P.CLOUDY (3-6)/8 9 13 5 13 4 2 3 4 0 3 11 11 78 DAYS WITH CLOUDY (7-8)/8 4 5 8 5 0 0 0 0 0 0 0 4 26 DAYS WITH VISIBILITY =< 2 KM 2 1 1 0 0 0 0 0 0 0 0 0 4 DURATION OF SUNSHINE HOURS 219.5 190.5 235.3 219.1 350.7 343.4 332.1 341.5 321.0 300.9 259.0 194.9 3307.9 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ANAR (40839) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 30 53 N LONGITUDE 55 15 E DATA PROCESSING CENTER ELEVATION 1408.8 M MEANS AND EXTREMES FOR THE YEAR 1988 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL MEAN QFE PRESSURE IN HPA 859.8 858.7 856.2 858.2 856.6 853.3 850.4 852.7 857.5 861.8 862.8 860.2 857.3 MAX. QFE PRESSURE IN HPA 870.9 869.2 864.2 867.2 862.0 859.8 857.6 858.4 863.5 868.5 869.0 868.2 870.9 DAY-HOUR 3- 6 7- 6 15- 6 9- 6 17- 6 8- 6 31- 6 21- 6 14- 6 17- 6 6- 6 29- 6 MIN. QFE PRESSURE IN HPA 851.2 848.6 848.2 852.6 851.0 845.8 844.6 847.7 851.7 855.4 855.4 849.9 844.6 DAY-HOUR 29-12 3-12 23-15 30-15 19-12 30-12 18-15 24-12 2-12 8-12 28-12 27-12 MEAN QNH PRESSURE IN HPA 1018.4 1017.1 1014.3 1016.5 1014.7 1010.9 1007.6 1010.2 1015.7 1020.6 1021.9 1018.9 1015.6 MAX. QNH PRESSURE IN HPA 1031.1 1029.2 1023.5 1026.9 1020.9 1018.4 1015.9 1016.8 1022.6 1028.4 1029.0 1028.0 1031.1 DAY-HOUR 3- 6 7- 6 15- 6 9- 6 17- 6 8- 6 31- 6 21- 6 14- 6 17- 6 6- 6 29- 6 MIN. QNH PRESSURE IN HPA 1008.5 1005.6 1005.1 1010.1 1008.3 1002.3 1001.0 1004.5 1009.1 1013.4 1013.4 1007.0 1001.0 DAY-HOUR 29-12 3-12 23-15 30-15 19-12 30-12 18-15 24-12 2-12 8-12 28-12 27-12 MEAN QFF PRESSURE IN HPA 1018.3 1015.5 1009.1 1008.9 1003.3 997.8 992.7 996.7 ****** 1013.1 1017.2 ****** ****** MAX. QFF PRESSURE IN HPA 1034.9 1032.8 1022.0 1022.3 1010.3 1006.6 1002.9 1002.9 ****** 1021.0 1027.7 ****** ****** DAY-HOUR 3- 6 7- 6 25- 3 3- 6 2- 6 1- 3 30- 3 11- 3 **-** 28- 6 26- 3 **-** MIN. QFF PRESSURE IN HPA 1004.2 999.5 999.7 1001.2 996.5 987.8 984.4 989.4 ****** 1004.1 1007.9 ****** ****** DAY-HOUR 29-12 3-12 14-12 30-21 29-12 30-15 26-12 4-12 **-** 9-21 14-12 **-** PRESSURE AT HOUR 0000 UTC. MEAN QFE PRESSURE IN HPA 859.6 858.5 856.0 857.9 856.5 853.6 850.4 852.7 ****** 861.7 862.8 ****** ****** MAX. QFE PRESSURE IN HPA 869.0 867.5 861.4 863.8 860.0 858.6 856.2 855.7 ****** 866.8 866.8 ****** ****** DAY 3 7 18 9 4 1 31 21 ** 17 6 ** MIN. QFE PRESSURE IN HPA 853.2 853.3 850.4 854.1 853.2 848.6 846.2 849.4 ****** 857.0 857.4 ****** ****** DAY 19 18 24 25 24 25 18 4 ** 9 20 ** MEAN QNH PRESSURE IN HPA 1018.2 1017.0 1014.1 1016.2 1014.6 1011.3 1007.6 1010.3 ****** 1020.6 1021.9 ****** ****** MAX. QNH PRESSURE IN HPA 1029.0 1027.2 1020.2 1023.0 1018.6 1017.0 1014.3 1013.7 ****** 1026.4 1026.4 ****** ****** DAY 3 7 18 9 4 1 31 21 ** 17 6 ** MIN. QNH PRESSURE IN HPA 1010.8 1010.9 1007.6 1011.9 1010.8 1005.6 1002.8 1006.5 ****** 1015.2 1015.7 ****** ****** DAY 19 18 24 25 24 25 18 4 ** 9 20 ** MEAN QFF PRESSURE IN HPA 1017.4 1014.7 1008.6 1008.4 1003.1 998.2 992.7 996.8 ****** 1012.4 1015.6 ****** ****** MAX. QFF PRESSURE IN HPA 1032.1 1030.4 1020.0 1018.4 1007.5 1006.2 1001.2 1000.7 ****** 1018.0 1024.4 ****** ****** DAY 3 7 25 4 2 1 31 22 ** 17 16 ** MIN. QFF PRESSURE IN HPA 1006.4 1006.2 1000.1 1002.4 998.6 991.4 986.8 991.0 ****** 1006.2 1008.0 ****** ****** DAY 29 24 5 23 24 24 8 4 ** 10 20 ** PRESSURE AT HOUR 0300 UTC. MEAN QFE PRESSURE IN HPA 860.2 859.1 856.9 858.9 857.7 854.5 851.6 853.8 858.2 862.6 863.5 861.0 858.2 MAX. QFE PRESSURE IN HPA 869.4 867.8 862.8 865.4 861.0 859.5 857.4 856.6 862.5 867.8 867.6 867.0 869.4 DAY 3 7 17 9 17 1 31 21 14 17 6 3 MIN. QFE PRESSURE IN HPA 853.2 852.8 850.7 855.2 854.0 848.0 847.2 850.8 854.4 857.8 858.2 851.2 847.2 DAY 19 17 5 25 1 30 8 24 1 7 29 26 MEAN QNH PRESSURE IN HPA 1018.9 1017.6 1015.1 1017.4 1016.0 1012.3 1009.0 1011.6 1016.6 1021.6 1022.6 1019.8 1016.5 MAX. QNH PRESSURE IN HPA 1029.4 1027.6 1021.8 1024.8 1019.8 1018.1 1015.7 1014.7 1021.5 1027.6 1027.4 1026.7 1029.4 DAY 3 7 17 9 17 1 31 21 14 17 6 3 MIN. QNH PRESSURE IN HPA 1010.8 1010.4 1008.0 1013.1 1011.8 1004.9 1003.9 1008.1 1012.2 1016.1 1016.6 1008.5 1003.9 DAY 19 17 5 25 1 30 8 24 1 7 29 26 MEAN QFF PRESSURE IN HPA 1019.7 1016.8 1010.6 1010.5 1005.2 999.4 994.7 999.0 1006.4 1015.6 1020.0 1018.8 1009.7 MAX. QFF PRESSURE IN HPA 1034.6 1032.7 1022.0 1020.7 1009.8 1006.6 1002.9 1002.9 1013.2 1020.9 1027.7 1032.7 1034.6 DAY 3 7 25 3 4 1 30 11 30 17 26 30 MIN. QFF PRESSURE IN HPA 1008.0 1005.5 1000.5 1003.9 1000.6 989.5 988.0 993.7 1000.0 1009.6 1011.0 1003.3 988.0 DAY 29 3 5 23 24 30 18 4 1 7 29 26 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ANAR (40839) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 30 53 N LONGITUDE 55 15 E DATA PROCESSING CENTER ELEVATION 1408.8 M MEANS AND EXTREMES FOR THE YEAR 1988 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 0600 UTC. MEAN QFE PRESSURE IN HPA 861.6 860.4 858.1 859.9 858.4 855.0 852.1 854.4 859.0 863.8 864.7 862.4 859.2 MAX. QFE PRESSURE IN HPA 870.9 869.2 864.2 867.2 862.0 859.8 857.6 858.4 863.5 868.5 869.0 868.2 870.9 DAY 3 7 15 9 17 8 31 21 14 17 6 29 MIN. QFE PRESSURE IN HPA 854.8 853.8 852.0 854.9 854.8 848.5 847.6 851.4 855.2 858.8 859.0 852.0 847.6 DAY 26 17 5 25 24 30 18 4 2 7 29 26 MEAN QNH PRESSURE IN HPA 1020.4 1019.1 1016.5 1018.6 1016.8 1012.9 1009.6 1012.3 1017.5 1023.0 1024.0 1021.4 1017.7 MAX. QNH PRESSURE IN HPA 1031.1 1029.2 1023.5 1026.9 1020.9 1018.4 1015.9 1016.8 1022.6 1028.4 1029.0 1028.0 1031.1 DAY 3 7 15 9 17 8 31 21 14 17 6 29 MIN. QNH PRESSURE IN HPA 1012.7 1011.5 1009.5 1012.8 1012.7 1005.4 1004.4 1008.8 1013.1 1017.3 1017.5 1009.5 1004.4 DAY 26 17 5 25 24 30 18 4 2 7 29 26 MEAN QFF PRESSURE IN HPA 1020.6 1017.7 1011.3 1011.0 1005.4 999.9 994.4 998.2 ****** 1015.5 1019.4 ****** ****** MAX. QFF PRESSURE IN HPA 1034.9 1032.8 1021.2 1022.3 1010.3 1006.4 1002.1 1002.4 ****** 1021.0 1025.9 ****** ****** DAY 3 7 25 3 2 1 30 21 ** 28 16 ** MIN. QFF PRESSURE IN HPA 1008.6 1005.4 1001.9 1004.2 999.7 993.2 988.3 993.4 ****** 1009.3 1012.1 ****** ****** DAY 26 17 5 25 24 24 18 4 ** 10 20 ** PRESSURE AT HOUR 0900 UTC. MEAN QFE PRESSURE IN HPA 860.0 859.1 856.7 858.5 857.1 853.6 850.8 853.0 857.5 861.8 862.7 860.5 857.6 MAX. QFE PRESSURE IN HPA 868.7 867.4 863.0 865.0 860.6 858.6 856.5 857.0 862.0 866.0 867.0 867.2 868.7 DAY 3 7 15 9 2 12 31 21 14 28 6 29 MIN. QFE PRESSURE IN HPA 852.7 851.0 850.8 853.9 853.0 846.8 846.0 849.8 853.5 857.2 857.6 850.4 846.0 DAY 29 3 5 25 19 30 18 4 2 9 29 26 MEAN QNH PRESSURE IN HPA 1018.6 1017.5 1014.9 1016.9 1015.3 1011.2 1008.1 1010.6 1015.7 1020.7 1021.8 1019.2 1015.9 MAX. QNH PRESSURE IN HPA 1028.6 1027.1 1022.1 1024.4 1019.3 1017.0 1014.6 1015.2 1020.9 1025.5 1026.7 1026.9 1028.6 DAY 3 7 15 9 2 12 31 21 14 28 6 29 MIN. QNH PRESSURE IN HPA 1010.3 1008.3 1008.1 1011.6 1010.6 1003.5 1002.6 1006.9 1011.2 1015.4 1015.9 1007.6 1002.6 DAY 29 3 5 25 19 30 18 4 2 9 29 26 MEAN QFF PRESSURE IN HPA 1017.9 1015.4 1009.3 1008.9 1003.6 998.2 992.8 996.4 ****** 1012.2 1015.9 ****** ****** MAX. QFF PRESSURE IN HPA 1031.2 1029.8 1020.1 1021.2 1009.2 1004.9 1000.8 1001.1 ****** 1017.4 1020.9 ****** ****** DAY 3 7 25 3 2 8 31 21 ** 3 15 ** MIN. QFF PRESSURE IN HPA 1005.4 1001.9 1000.0 1002.5 998.4 991.1 986.1 990.8 ****** 1006.1 1009.4 ****** ****** DAY 29 3 5 24 19 24 18 4 ** 10 14 ** PRESSURE AT HOUR 1200 UTC. MEAN QFE PRESSURE IN HPA 858.5 857.1 854.9 856.7 855.3 851.9 849.1 851.3 855.7 860.2 861.1 859.2 855.9 MAX. QFE PRESSURE IN HPA 866.8 865.8 861.2 863.0 859.2 857.8 854.4 855.6 859.8 864.8 865.1 867.2 867.2 DAY 10 7 15 3 3 12 31 21 14 28 5 29 MIN. QFE PRESSURE IN HPA 851.2 848.6 850.1 853.0 851.0 845.8 844.8 847.7 851.7 855.4 855.4 849.9 844.8 DAY 29 3 14 1 19 30 18 24 2 8 28 27 MEAN QNH PRESSURE IN HPA 1016.9 1015.3 1012.8 1014.9 1013.2 1009.3 1006.1 1008.7 1013.7 1018.9 1019.9 1017.7 1014.0 MAX. QNH PRESSURE IN HPA 1026.4 1025.3 1020.0 1022.1 1017.7 1016.1 1012.2 1013.6 1018.4 1024.1 1024.5 1026.9 1026.9 DAY 10 7 15 3 3 12 31 21 14 28 5 29 MIN. QNH PRESSURE IN HPA 1008.5 1005.6 1007.3 1010.6 1008.3 1002.3 1001.2 1004.5 1009.1 1013.4 1013.4 1007.0 1001.2 DAY 29 3 14 1 19 30 18 24 2 8 28 27 MEAN QFF PRESSURE IN HPA 1016.0 1013.1 1007.2 1007.1 1001.8 996.7 991.2 995.2 ****** 1010.7 1014.2 ****** ****** MAX. QFF PRESSURE IN HPA 1029.1 1027.9 1017.8 1019.3 1006.5 1003.8 999.0 1000.6 ****** 1016.8 1019.0 ****** ****** DAY 3 7 25 3 8 8 31 21 ** 28 15 ** MIN. QFF PRESSURE IN HPA 1004.2 999.5 999.7 1002.0 996.5 990.1 984.4 989.4 ****** 1004.4 1007.9 ****** ****** DAY 29 3 14 23 29 16 26 4 ** 9 14 ** ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ANAR (40839) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 30 53 N LONGITUDE 55 15 E DATA PROCESSING CENTER ELEVATION 1408.8 M MEANS AND EXTREMES FOR THE YEAR 1988 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 1500 UTC. MEAN QFE PRESSURE IN HPA 859.1 857.7 854.9 856.9 855.1 851.6 848.9 851.1 855.7 860.6 861.9 860.0 856.1 MAX. QFE PRESSURE IN HPA 866.8 866.0 861.2 862.9 859.1 857.4 854.8 855.3 859.9 865.2 865.8 867.2 867.2 DAY 3 7 15 9 3 8 31 21 14 28 15 29 MIN. QFE PRESSURE IN HPA 851.7 852.4 848.2 852.6 851.0 846.2 844.6 848.1 851.9 855.4 856.4 851.0 844.6 DAY 29 3 23 30 19 24 18 4 12 8 28 27 MEAN QNH PRESSURE IN HPA 1017.6 1016.0 1012.8 1015.0 1013.0 1009.0 1005.8 1008.4 1013.7 1019.3 1020.8 1018.7 1014.2 MAX. QNH PRESSURE IN HPA 1026.4 1025.5 1020.0 1022.0 1017.6 1015.7 1012.7 1013.2 1018.5 1024.6 1025.3 1026.9 1026.9 DAY 3 7 15 9 3 8 31 21 14 28 15 29 MIN. QNH PRESSURE IN HPA 1009.1 1009.9 1005.1 1010.1 1008.3 1002.8 1001.0 1005.0 1009.3 1013.4 1014.5 1008.3 1001.0 DAY 29 3 23 30 19 24 18 4 12 8 28 27 MEAN QFF PRESSURE IN HPA 1018.3 1015.1 1008.2 1008.1 1002.1 996.1 991.6 995.8 1003.6 1013.3 1018.2 1017.5 1007.3 MAX. QFF PRESSURE IN HPA 1030.9 1029.9 1018.5 1019.8 1007.0 1004.4 1000.1 1000.8 1010.5 1019.4 1025.9 1031.4 1031.4 DAY 3 7 15 3 3 8 31 21 29 28 26 29 MIN. QFF PRESSURE IN HPA 1005.9 1006.8 999.8 1001.8 996.9 987.8 984.9 990.2 996.5 1006.5 1011.9 1004.2 984.9 DAY 29 3 23 20 29 30 18 4 12 8 14 27 PRESSURE AT HOUR 1800 UTC. MEAN QFE PRESSURE IN HPA 859.9 858.9 856.1 858.3 856.3 853.1 850.2 852.3 ****** 861.6 863.0 ****** ****** MAX. QFE PRESSURE IN HPA 868.6 867.3 861.4 864.1 860.5 857.6 856.0 856.5 ****** 866.8 866.8 ****** ****** DAY 2 6 15 3 3 8 30 21 ** 16 5 ** MIN. QFE PRESSURE IN HPA 853.8 854.0 850.0 853.5 852.7 847.9 845.8 848.8 ****** 856.6 859.3 ****** ****** DAY 26 17 23 30 19 24 17 4 ** 9 19 ** MEAN QNH PRESSURE IN HPA 1018.5 1017.4 1014.1 1016.7 1014.4 1010.7 1007.4 1009.8 ****** 1020.5 1022.1 ****** ****** MAX. QNH PRESSURE IN HPA 1028.5 1027.0 1020.2 1023.3 1019.2 1015.9 1014.0 1014.6 ****** 1026.4 1026.4 ****** ****** DAY 2 6 15 3 3 8 30 21 ** 16 5 ** MIN. QNH PRESSURE IN HPA 1011.5 1011.8 1007.2 1011.2 1010.3 1004.8 1002.3 1005.8 ****** 1014.7 1017.8 ****** ****** DAY 26 17 23 30 19 24 17 4 ** 9 19 ** MEAN QFF PRESSURE IN HPA 1018.7 1015.9 1008.9 1009.0 1002.9 997.1 992.2 995.9 ****** 1013.1 1017.2 ****** ****** MAX. QFF PRESSURE IN HPA 1031.2 1030.2 1018.7 1020.3 1007.7 1004.1 1000.6 1000.5 ****** 1019.3 1025.7 ****** ****** DAY 2 6 24 3 3 8 30 21 ** 28 15 ** MIN. QFF PRESSURE IN HPA 1008.6 1007.3 1002.2 1002.4 997.2 990.5 986.2 990.8 ****** 1005.3 1012.3 ****** ****** DAY 26 17 23 30 29 23 17 4 ** 9 10 ** PRESSURE AT HOUR 2100 UTC. MEAN QFE PRESSURE IN HPA 859.8 858.8 856.2 858.2 856.4 853.2 850.4 852.7 ****** 861.7 862.9 ****** ****** MAX. QFE PRESSURE IN HPA 869.0 867.5 861.4 864.1 860.8 857.6 856.2 856.4 ****** 867.1 866.6 ****** ****** DAY 2 6 17 8 3 8 30 21 ** 16 5 ** MIN. QFE PRESSURE IN HPA 853.8 853.6 850.4 853.6 852.7 848.3 845.8 849.0 ****** 856.8 858.6 ****** ****** DAY 26 17 23 30 19 23 17 3 ** 8 19 ** MEAN QNH PRESSURE IN HPA 1018.5 1017.3 1014.3 1016.6 1014.5 1010.8 1007.6 1010.2 ****** 1020.6 1021.9 ****** ****** MAX. QNH PRESSURE IN HPA 1029.0 1027.2 1020.2 1023.3 1019.6 1015.9 1014.3 1014.5 ****** 1026.8 1026.2 ****** ****** DAY 2 6 17 8 3 8 30 21 ** 16 5 ** MIN. QNH PRESSURE IN HPA 1011.5 1011.3 1007.6 1011.3 1010.3 1005.2 1002.3 1006.0 ****** 1015.0 1017.0 ****** ****** DAY 26 17 23 30 19 23 17 3 ** 8 19 ** MEAN QFF PRESSURE IN HPA 1017.7 1015.2 1008.6 1008.4 1002.8 997.1 992.4 996.1 ****** 1012.1 1015.8 ****** ****** MAX. QFF PRESSURE IN HPA 1031.1 1029.9 1020.2 1019.9 1007.4 1004.2 1000.7 1000.1 ****** 1018.1 1024.8 ****** ****** DAY 2 6 24 3 3 8 30 10 ** 16 15 ** MIN. QFF PRESSURE IN HPA 1007.1 1007.8 1001.8 1001.2 997.5 990.2 985.8 990.1 ****** 1004.1 1010.0 ****** ****** DAY 28 2 4 30 29 23 7 3 ** 9 19 ** ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ANAR (40839) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 30 53 N LONGITUDE 55 15 E DATA PROCESSING CENTER ELEVATION 1408.8 M MEANS AND EXTREMES FOR THE YEAR 1989 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AIR TEMPERATURE (C) 4.5 4.5 12.6 17.4 23.7 30.1 30.7 27.9 24.3 19.4 13.5 8.5 18.1 MINIMUN AIR TEMPERATURE (C) -4.1 -3.7 5.5 9.5 13.8 19.1 20.8 17.5 13.8 9.5 6.5 1.0 9.1 DAYS WITH MINIMUM TEMP. >=21 0 0 0 0 1 6 14 2 1 0 0 0 24 DAYS WITH MINIMUM TEMP. <=-4 15 15 0 0 0 0 0 0 0 0 0 8 38 DAYS WITH FREEZING MIN.<= 0 28 22 2 0 0 0 0 0 0 0 2 18 72 TEMPERATURE RECORDS LOWEST(C) -10.6 -11.4 -0.4 1.4 4.0 15.0 16.4 13.4 6.4 6.0 -1.2 -5.8 -11.4 DAY 19 7 1 1 1 13 26 31 25 25 26 22 MAXIMUM AIR TEMPERATURE (C) 11.7 12.8 19.7 24.5 31.5 38.2 37.9 36.4 33.6 29.0 20.9 16.2 26.0 DAYS WITH MAXIMUM TEMP. >=30 0 0 0 5 21 30 31 31 24 13 0 0 155 DAYS WITH MAXIMUM TEMP. <= 0 0 0 0 0 0 0 0 0 0 0 0 0 0 TEMPERATURE RECORDS HIGHEST(C) 18.6 20.0 24.8 31.6 38.4 40.6 42.0 39.2 37.2 33.4 25.4 22.6 42.0 DAY 23 22 11 18 29 26 9 4 17 1 18 1 DIF. BETWEEN (MAX.-MIN.) (C) 15.8 16.5 14.2 15.0 17.7 19.1 17.1 18.9 19.8 19.5 14.4 15.2 16.9 MEAN DAILY TEMP. (MDT) (C) 3.8 4.5 12.6 17.0 22.6 28.6 29.3 26.9 23.7 19.2 13.7 8.6 17.6 COOLING DEG. DAYS(BASE 21 0C) 0.0 0.0 0.0 3.8 82.7 229.5 258.1 184.1 95.0 4.1 0.0 0.0 857.3 HEATING DEG. DAYS(BASE 18 0C) 440.9 377.3 169.9 58.6 15.5 0.0 0.0 0.0 1.7 13.5 132.6 291.5 1501.5 DEWPOINT (MEAN C) -9.7 -9.9 -2.6 -1.2 -2.5 -5.8 -0.6 -1.8 -1.0 -3.2 -0.5 -5.5 -3.7 MIXING RATIO (G/KG) 2.28 2.32 4.03 4.43 3.96 3.08 4.47 4.06 4.38 3.64 4.72 3.22 3.72 VAPOUR PRESSURE (HPA) 3.13 3.20 5.51 6.07 5.43 4.21 6.09 5.54 5.99 5.01 6.48 4.43 5.09 SATURATION DEF. (HPA) 6.04 6.18 9.98 15.13 26.16 40.81 40.28 34.36 27.00 19.31 9.85 7.55 20.22 RELATIVE HUMIDITY (MEAN %) 40 39 42 34 21 11 15 16 21 24 43 40 29 RELATIVE HUMIDITY (MAX. %) 58 60 64 54 37 20 25 26 33 38 64 58 45 RELATIVE HUMIDITY (MIN. %) 23 21 22 17 9 5 8 8 12 13 24 24 16 RELATIVE HUMIDITY (MEAN% 03UTC) 55 55 58 50 36 18 25 25 32 36 59 53 42 RELATIVE HUMIDITY (MEAN% 09UTC) 32 28 31 20 13 6 9 10 14 16 29 33 20 RELATIVE HUMIDITY (MEAN% 15UTC) 34 29 32 26 13 7 10 11 16 19 38 32 22 RH=0 => RELATIVE HUMIDITY < 0.5% AMOUNT OF PRECIPITATION MM. 0.2 2.3 38.4 13.4 0.0 0.0 3.0 0.0 0.0 0.0 18.0 3.0 78.3 DAYS WITH PRECIPITATION >=10 0 0 1 0 0 0 0 0 0 0 0 0 1 DAYS WITH PRECIPITATION >= 5 0 0 2 2 0 0 0 0 0 0 2 0 6 DAYS WITH PRECIPITATION >= 1 0 1 7 3 0 0 1 0 0 0 4 1 17 DAYS WITH PRECIPITATION 1 2 7 3 0 0 1 0 0 0 4 1 19 GREATEST DAILY PRECIPITATION 0.2 2.0 19.0 7.0 0.0 0.0 3.0 0.0 0.0 0.0 9.0 3.0 19.0 DAY 12 25 21 22 ** ** 17 ** ** ** 8 15 DAY WITH THUNDER STORM 0 0 2 1 0 0 0 0 0 0 1 0 4 DAYS WITH SNOW OR SLEET 0 1 0 0 0 0 0 0 0 0 0 0 1 DAYS WITH DUST 1 4 7 0 7 3 6 0 0 1 0 0 29 WIND DIRECTION (PREVAILING) 315 225 225 225 315 270 360 360 225 225 225 225 225 PREVAILING WIND SPEED(KNOTS) 7.2 11.1 12.8 6.4 8.4 7.6 8.4 7.8 5.7 6.9 7.7 8.7 8.2 PREVAILING WIND PERCENT 9.6 16.1 17.3 11.3 17.7 15.0 21.0 17.3 10.0 14.1 15.4 16.5 11.9 CALMS PERCENT OF WIND 71.9 61.6 51.6 58.3 40.3 41.3 38.3 53.6 63.8 66.1 52.1 60.9 54.5 NO. OF WIND OBSERVATION 178 224 248 240 248 240 248 248 240 248 240 248 2850 VECTOR WIND DIRECTION (MEAN) 253 245 232 248 313 308 9 358 319 232 242 202 269 VECTOR WIND MAGNITUDE(KNOTS) 1.5 2.3 3.0 1.0 2.3 2.1 2.7 1.5 0.8 0.9 1.8 3.0 1.1 WIND STEADINESES (MEAN %) 55.6 60.5 61.2 34.5 52.3 48.8 56.3 50.0 34.8 40.9 51.4 83.3 31.4 WIND SPEED (MEAN KNOTS) 2.7 3.8 4.9 2.9 4.4 4.3 4.8 3.0 2.3 2.2 3.5 3.6 3.5 FASTEST WIND DIRECTION 210 210 210 330 330 330 180 360 270 210 300 190 210 FASTEST WIND SPEED (KNOTS) 19 23 27 16 17 23 17 14 16 16 17 21 27 DAY 2 19 28 25 7 7 17 6 28 30 15 5 DAYS WITH SKY CLEAR (0-2)/8 21 19 14 10 23 30 29 27 30 29 12 19 263 DAYS WITH P.CLOUDY (3-6)/8 8 5 12 13 7 0 2 4 0 2 10 8 71 DAYS WITH CLOUDY (7-8)/8 2 4 5 7 1 0 0 0 0 0 8 4 31 DAYS WITH VISIBILITY =< 2 KM 0 0 0 0 0 1 0 0 0 0 0 0 1 DURATION OF SUNSHINE HOURS 238.5 240.8 220.4 226.6 325.8 ****** ****** ****** 299.1 266.0 ****** ****** ****** ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ANAR (40839) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 30 53 N LONGITUDE 55 15 E DATA PROCESSING CENTER ELEVATION 1408.8 M MEANS AND EXTREMES FOR THE YEAR 1989 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL MEAN QFE PRESSURE IN HPA 859.3 860.8 856.8 859.4 857.8 853.6 853.5 854.6 857.1 861.8 862.8 860.6 858.2 MAX. QFE PRESSURE IN HPA 867.4 869.0 863.8 866.0 863.2 858.1 858.2 859.4 867.2 869.8 868.5 867.0 869.8 DAY-HOUR 27- 6 4- 6 8- 6 9- 6 1- 6 2- 6 20- 3 31- 6 24- 6 27- 6 29- 6 19- 6 MIN. QFE PRESSURE IN HPA 851.8 848.7 849.4 853.9 851.2 848.0 848.8 847.8 851.0 855.4 859.0 855.6 847.8 DAY-HOUR 17-12 23- 0 29-12 29-12 31-15 7-12 5-12 1-15 12-12 1-15 19-12 5-12 MEAN QNH PRESSURE IN HPA 1017.9 1019.5 1015.0 1017.9 1016.1 1011.3 1011.2 1012.5 1015.3 1020.7 1021.8 1019.4 1016.5 MAX. QNH PRESSURE IN HPA 1027.1 1029.0 1023.0 1025.5 1022.3 1016.5 1016.6 1017.9 1026.9 1029.9 1028.4 1026.7 1029.9 DAY-HOUR 27- 6 4- 6 8- 6 9- 6 1- 6 2- 6 20- 3 31- 6 24- 6 27- 6 29- 6 19- 6 MIN. QNH PRESSURE IN HPA 1009.2 1005.7 1006.5 1011.6 1008.5 1004.9 1005.8 1004.6 1008.3 1013.4 1017.5 1013.6 1004.6 DAY-HOUR 17-12 23- 0 29-12 29-12 31-15 7-12 5-12 1-15 12-12 1-15 19-12 5-12 MEAN QFF PRESSURE IN HPA ****** 1020.5 1010.7 1011.0 1005.9 997.6 997.0 999.8 1004.5 1012.7 1017.1 1017.7 ****** MAX. QFF PRESSURE IN HPA ****** 1033.6 1021.4 1019.8 1017.9 1003.8 1002.8 1006.6 1020.5 1023.8 1027.2 1029.1 ****** DAY-HOUR **-** 26- 3 31- 6 9- 6 1- 6 2- 6 20- 3 31- 3 24- 3 27- 6 26- 6 19- 6 MIN. QFF PRESSURE IN HPA ****** 999.4 999.8 1003.2 995.0 991.4 990.5 992.6 994.5 1002.4 1009.7 1007.1 ****** DAY-HOUR **-** 23- 0 28- 3 29-12 31-21 7-12 5-12 1-12 12-12 1-21 17- 0 5-12 PRESSURE AT HOUR 0000 UTC. MEAN QFE PRESSURE IN HPA ****** 860.3 856.6 859.1 857.9 853.5 853.5 854.5 857.0 861.5 862.6 860.6 ****** MAX. QFE PRESSURE IN HPA ****** 866.0 861.5 863.6 861.2 855.8 856.6 857.2 865.8 866.8 866.7 865.3 ****** DAY ** 8 1 9 9 2 20 31 24 27 29 19 MIN. QFE PRESSURE IN HPA ****** 848.7 850.6 854.7 854.3 850.6 850.2 849.5 852.2 856.2 859.2 857.7 ****** DAY ** 23 30 30 29 7 6 2 12 2 25 5 MEAN QNH PRESSURE IN HPA ****** 1019.0 1014.8 1017.6 1016.2 1011.2 1011.2 1012.4 1015.2 1020.4 1021.7 1019.3 ****** MAX. QNH PRESSURE IN HPA ****** 1025.5 1020.4 1022.8 1020.0 1013.8 1014.7 1015.4 1025.3 1026.4 1026.3 1024.7 ****** DAY ** 8 1 9 9 2 20 31 24 27 29 19 MIN. QNH PRESSURE IN HPA ****** 1005.7 1007.8 1012.6 1012.1 1007.8 1007.4 1006.6 1009.7 1014.3 1017.7 1016.0 ****** DAY ** 23 30 30 29 7 6 2 12 2 25 5 MEAN QFF PRESSURE IN HPA ****** 1019.4 1009.9 1010.6 1006.3 997.7 997.2 999.7 1004.0 1011.9 1016.4 1016.9 ****** MAX. QFF PRESSURE IN HPA ****** 1032.0 1017.7 1017.9 1016.1 1000.9 1000.7 1004.2 1018.7 1019.8 1022.1 1025.1 ****** DAY ** 26 1 9 2 2 22 31 24 27 29 19 MIN. QFF PRESSURE IN HPA ****** 999.4 1001.3 1005.0 998.1 994.0 991.7 994.5 995.9 1002.5 1009.7 1008.4 ****** DAY ** 23 28 30 30 7 6 2 12 2 17 5 PRESSURE AT HOUR 0300 UTC. MEAN QFE PRESSURE IN HPA 859.5 861.1 857.4 860.1 859.1 854.9 854.7 855.5 858.3 862.7 863.4 861.1 859.0 MAX. QFE PRESSURE IN HPA 865.4 867.4 862.5 864.7 862.0 857.7 858.2 858.4 866.6 868.2 867.4 865.8 868.2 DAY 27 26 8 9 1 2 20 31 24 27 29 19 MIN. QFE PRESSURE IN HPA 852.4 851.3 850.2 856.3 855.5 851.4 851.8 850.7 853.0 857.2 860.4 857.7 850.2 DAY 12 23 30 23 31 7 6 2 12 2 25 5 MEAN QNH PRESSURE IN HPA 1018.1 1019.9 1015.7 1018.7 1017.6 1012.7 1012.5 1013.5 1016.6 1021.8 1022.6 1019.9 1017.5 MAX. QNH PRESSURE IN HPA 1024.8 1027.1 1021.5 1024.0 1020.9 1016.0 1016.6 1016.8 1026.2 1028.0 1027.1 1025.3 1028.0 DAY 27 26 8 9 1 2 20 31 24 27 29 19 MIN. QNH PRESSURE IN HPA 1009.9 1008.6 1007.4 1014.4 1013.5 1008.8 1009.2 1008.0 1010.6 1015.4 1019.1 1016.0 1007.4 DAY 12 23 30 23 31 7 6 2 12 2 25 5 MEAN QFF PRESSURE IN HPA 1020.5 1021.9 1012.2 1012.6 1007.9 999.4 999.0 1001.7 1007.1 1015.2 1019.0 1019.3 1011.3 MAX. QFF PRESSURE IN HPA 1030.8 1033.6 1019.7 1019.6 1017.4 1003.4 1002.8 1006.6 1020.5 1023.4 1026.4 1027.1 1033.6 DAY 19 26 1 9 1 2 20 31 24 27 26 19 MIN. QFF PRESSURE IN HPA 1006.6 1005.5 999.8 1007.5 1000.4 995.2 994.1 996.4 998.8 1006.8 1011.8 1009.5 994.1 DAY 12 23 28 29 31 7 6 2 12 2 20 5 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ANAR (40839) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 30 53 N LONGITUDE 55 15 E DATA PROCESSING CENTER ELEVATION 1408.8 M MEANS AND EXTREMES FOR THE YEAR 1989 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 0600 UTC. MEAN QFE PRESSURE IN HPA 861.1 862.7 858.6 860.9 859.7 855.4 855.0 856.2 859.1 863.8 864.6 862.3 859.9 MAX. QFE PRESSURE IN HPA 867.4 869.0 863.8 866.0 863.2 858.1 858.2 859.4 867.2 869.8 868.5 867.0 869.8 DAY 27 4 8 9 1 2 20 31 24 27 29 19 MIN. QFE PRESSURE IN HPA 854.3 853.6 850.6 856.9 856.0 851.7 852.2 851.1 853.8 858.6 861.2 857.7 850.6 DAY 12 23 30 23 31 7 6 2 12 2 12 15 MEAN QNH PRESSURE IN HPA 1019.9 1021.7 1017.0 1019.7 1018.3 1013.4 1012.9 1014.3 1017.6 1022.9 1023.9 1021.3 1018.6 MAX. QNH PRESSURE IN HPA 1027.1 1029.0 1023.0 1025.5 1022.3 1016.5 1016.6 1017.9 1026.9 1029.9 1028.4 1026.7 1029.9 DAY 27 4 8 9 1 2 20 31 24 27 29 19 MIN. QNH PRESSURE IN HPA 1012.1 1011.3 1007.8 1015.1 1014.0 1009.1 1009.7 1008.4 1011.5 1017.0 1020.0 1016.0 1007.8 DAY 12 23 30 23 31 7 6 2 12 2 12 15 MEAN QFF PRESSURE IN HPA ****** 1023.0 1012.9 1012.5 1007.8 999.4 998.3 1001.1 1006.6 1015.1 1019.4 1020.0 ****** MAX. QFF PRESSURE IN HPA ****** 1033.3 1021.4 1019.8 1017.9 1003.8 1002.4 1006.1 1019.1 1023.8 1027.2 1029.1 ****** DAY ** 4 31 9 1 2 20 31 24 27 26 19 MIN. QFF PRESSURE IN HPA ****** 1006.8 1002.0 1005.9 1000.2 994.9 993.7 995.8 999.0 1006.9 1014.0 1010.7 ****** DAY ** 23 28 29 31 7 6 2 12 2 20 5 PRESSURE AT HOUR 0900 UTC. MEAN QFE PRESSURE IN HPA 859.2 861.3 857.2 859.7 858.3 854.2 853.8 854.9 857.5 862.0 862.6 860.6 858.4 MAX. QFE PRESSURE IN HPA 865.0 867.2 862.1 864.6 861.6 857.2 857.0 858.4 865.6 867.5 865.8 864.6 867.5 DAY 27 8 31 9 1 2 20 31 23 27 29 18 MIN. QFE PRESSURE IN HPA 852.4 852.4 850.4 855.1 854.2 850.2 850.7 850.0 852.2 857.6 860.2 856.6 850.0 DAY 12 14 30 29 31 7 5 2 12 1 12 5 MEAN QNH PRESSURE IN HPA 1017.7 1020.1 1015.5 1018.3 1016.7 1011.9 1011.5 1012.8 1015.8 1020.9 1021.7 1019.3 1016.9 MAX. QNH PRESSURE IN HPA 1024.4 1026.9 1021.0 1023.9 1020.5 1015.4 1015.2 1016.8 1025.1 1027.2 1025.3 1023.9 1027.2 DAY 27 8 31 9 1 2 20 31 23 27 29 18 MIN. QNH PRESSURE IN HPA 1009.9 1009.9 1007.6 1013.0 1012.0 1007.4 1008.0 1007.2 1009.7 1015.9 1018.9 1014.7 1007.2 DAY 12 14 30 29 31 7 5 2 12 1 12 5 MEAN QFF PRESSURE IN HPA ****** 1020.5 1010.7 1011.0 1006.2 998.0 997.0 999.8 1004.4 1012.1 1016.2 1016.8 ****** MAX. QFF PRESSURE IN HPA ****** 1030.8 1020.6 1018.6 1016.3 1002.5 1001.6 1005.0 1016.8 1020.5 1022.4 1024.1 ****** DAY ** 4 31 2 1 2 20 31 24 27 26 19 MIN. QFF PRESSURE IN HPA ****** 1006.2 1000.9 1004.4 998.2 993.3 992.7 994.0 996.4 1004.5 1010.4 1007.8 ****** DAY ** 23 28 29 31 7 18 2 12 2 20 5 PRESSURE AT HOUR 1200 UTC. MEAN QFE PRESSURE IN HPA 857.6 859.5 855.4 858.2 856.4 852.6 852.4 853.4 855.7 860.3 861.4 859.3 856.8 MAX. QFE PRESSURE IN HPA 863.0 865.2 860.7 862.6 860.6 855.0 856.0 856.6 863.6 865.9 864.4 863.4 865.9 DAY 15 4 31 9 1 25 20 31 23 27 28 18 MIN. QFE PRESSURE IN HPA 851.8 852.0 849.4 853.9 852.0 848.0 848.8 848.2 851.0 855.6 859.0 855.6 848.0 DAY 17 14 29 29 31 7 5 1 12 1 19 5 MEAN QNH PRESSURE IN HPA 1015.9 1018.1 1013.3 1016.5 1014.6 1010.1 1009.9 1011.1 1013.7 1019.0 1020.2 1017.8 1015.0 MAX. QNH PRESSURE IN HPA 1022.1 1024.6 1019.4 1021.6 1019.3 1012.9 1014.0 1014.7 1022.8 1025.4 1023.7 1022.5 1025.4 DAY 15 4 31 9 1 25 20 31 23 27 28 18 MIN. QNH PRESSURE IN HPA 1009.2 1009.5 1006.5 1011.6 1009.5 1004.9 1005.8 1005.1 1008.3 1013.6 1017.5 1013.6 1004.9 DAY 17 14 29 29 31 7 5 1 12 1 19 5 MEAN QFF PRESSURE IN HPA ****** 1018.3 1008.6 1009.6 1004.5 996.6 996.0 998.4 1002.4 1010.4 1015.0 1015.5 ****** MAX. QFF PRESSURE IN HPA ****** 1027.9 1018.8 1016.9 1015.7 999.7 1000.7 1003.6 1015.0 1018.6 1019.6 1022.4 ****** DAY ** 6 31 2 1 15 20 31 23 27 26 18 MIN. QFF PRESSURE IN HPA ****** 1005.7 1000.7 1003.2 996.4 991.4 990.5 992.6 994.5 1002.5 1010.0 1007.1 ****** DAY ** 23 28 29 31 7 5 1 12 2 20 5 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ANAR (40839) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 30 53 N LONGITUDE 55 15 E DATA PROCESSING CENTER ELEVATION 1408.8 M MEANS AND EXTREMES FOR THE YEAR 1989 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 1500 UTC. MEAN QFE PRESSURE IN HPA 858.2 859.8 855.5 858.3 856.4 852.2 852.2 853.3 855.7 860.7 862.1 860.1 857.0 MAX. QFE PRESSURE IN HPA 863.3 865.6 860.4 862.2 860.6 854.4 855.4 856.2 864.6 865.9 865.4 864.0 865.9 DAY 30 25 31 9 1 25 20 31 23 27 28 18 MIN. QFE PRESSURE IN HPA 853.0 854.0 850.0 854.7 851.2 848.0 849.0 847.8 851.0 855.4 859.4 856.6 847.8 DAY 4 1 29 29 31 7 5 1 12 1 19 31 MEAN QNH PRESSURE IN HPA 1016.5 1018.4 1013.5 1016.7 1014.5 1009.7 1009.7 1010.9 1013.7 1019.4 1021.0 1018.7 1015.2 MAX. QNH PRESSURE IN HPA 1022.4 1025.1 1019.1 1021.2 1019.3 1012.2 1013.4 1014.3 1023.9 1025.4 1024.8 1023.2 1025.4 DAY 30 25 31 9 1 25 20 31 23 27 28 18 MIN. QNH PRESSURE IN HPA 1010.6 1011.8 1007.2 1012.6 1008.5 1004.9 1006.0 1004.6 1008.3 1013.4 1017.9 1014.7 1004.6 DAY 4 1 29 29 31 7 5 1 12 1 19 31 MEAN QFF PRESSURE IN HPA 1018.9 1020.2 1010.0 1010.5 1004.7 996.3 996.2 999.1 1004.1 1012.7 1017.4 1018.1 1009.0 MAX. QFF PRESSURE IN HPA 1026.5 1029.5 1018.9 1016.6 1015.6 999.6 1000.4 1004.0 1017.3 1020.3 1022.3 1024.5 1029.5 DAY 30 8 31 2 1 13 21 31 23 27 26 18 MIN. QFF PRESSURE IN HPA 1009.4 1009.0 1001.0 1005.9 995.1 992.1 991.0 992.6 996.0 1005.0 1011.5 1009.9 991.0 DAY 17 22 28 17 31 7 6 1 12 2 20 5 PRESSURE AT HOUR 1800 UTC. MEAN QFE PRESSURE IN HPA ****** 860.8 856.8 859.4 857.5 853.1 853.3 854.4 856.8 861.7 862.9 860.8 ****** MAX. QFE PRESSURE IN HPA ****** 866.4 862.0 863.4 861.5 855.0 856.5 857.3 866.0 866.6 866.6 865.7 ****** DAY ** 25 7 8 8 25 20 31 23 26 28 18 MIN. QFE PRESSURE IN HPA ****** 852.4 850.8 855.8 852.0 850.6 850.0 848.6 852.2 856.0 859.8 857.0 ****** DAY ** 22 28 29 31 9 5 1 11 1 24 31 MEAN QNH PRESSURE IN HPA ****** 1019.6 1015.0 1018.0 1015.7 1010.7 1010.9 1012.2 1015.0 1020.6 1022.0 1019.5 ****** MAX. QNH PRESSURE IN HPA ****** 1026.0 1020.9 1022.5 1020.4 1012.9 1014.6 1015.5 1025.5 1026.2 1026.2 1025.2 ****** DAY ** 25 7 8 8 25 20 31 23 26 28 18 MIN. QNH PRESSURE IN HPA ****** 1009.9 1008.1 1013.8 1009.5 1007.8 1007.2 1005.6 1009.7 1014.0 1018.4 1015.2 ****** DAY ** 22 28 29 31 9 5 1 11 1 24 31 MEAN QFF PRESSURE IN HPA ****** 1020.7 1010.9 1010.7 1005.0 996.7 996.3 999.1 1004.1 1012.7 1017.5 1018.3 ****** MAX. QFF PRESSURE IN HPA ****** 1030.0 1019.0 1017.1 1015.6 999.3 1000.8 1003.6 1018.0 1020.5 1023.6 1027.2 ****** DAY ** 7 31 8 1 12 20 30 23 26 28 18 MIN. QFF PRESSURE IN HPA ****** 1003.8 1001.5 1005.6 995.4 993.5 990.8 993.0 996.8 1004.5 1012.6 1011.1 ****** DAY ** 22 28 18 31 6 6 1 13 1 18 4 PRESSURE AT HOUR 2100 UTC. MEAN QFE PRESSURE IN HPA ****** 860.7 856.9 859.4 857.5 853.3 853.5 854.8 856.9 861.7 862.8 860.5 ****** MAX. QFE PRESSURE IN HPA ****** 866.6 862.0 863.7 861.2 855.2 856.5 857.5 865.8 866.7 866.5 865.7 ****** DAY ** 25 7 8 1 1 20 30 23 26 28 18 MIN. QFE PRESSURE IN HPA ****** 849.8 851.7 855.5 852.0 850.8 850.2 849.1 852.2 856.0 859.2 856.8 ****** DAY ** 22 29 29 31 10 5 1 11 1 24 31 MEAN QNH PRESSURE IN HPA ****** 1019.4 1015.1 1017.9 1015.8 1011.0 1011.2 1012.6 1015.1 1020.5 1021.8 1019.2 ****** MAX. QNH PRESSURE IN HPA ****** 1026.2 1020.9 1022.9 1020.0 1013.1 1014.6 1015.8 1025.3 1026.3 1026.1 1025.2 ****** DAY ** 25 7 8 1 1 20 30 23 26 28 18 MIN. QNH PRESSURE IN HPA ****** 1006.9 1009.1 1013.5 1009.5 1008.1 1007.4 1006.1 1009.7 1014.0 1017.7 1015.0 ****** DAY ** 22 29 29 31 10 5 1 11 1 24 31 MEAN QFF PRESSURE IN HPA ****** 1019.8 1010.3 1010.4 1005.1 997.0 996.6 999.6 1003.8 1011.8 1016.4 1016.8 ****** MAX. QFF PRESSURE IN HPA ****** 1031.4 1018.7 1017.6 1015.7 1000.3 1001.1 1004.2 1017.4 1019.8 1021.6 1025.3 ****** DAY ** 25 31 8 1 13 21 30 23 26 25 18 MIN. QFF PRESSURE IN HPA ****** 1000.0 1002.1 1004.9 995.0 993.7 991.4 993.7 996.0 1002.4 1010.1 1008.9 ****** DAY ** 22 27 17 31 6 6 1 12 1 19 4 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ANAR (40839) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 30 53 N LONGITUDE 55 15 E DATA PROCESSING CENTER ELEVATION 1408.8 M MEANS AND EXTREMES FOR THE YEAR 1990 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AIR TEMPERATURE (C) 6.3 8.4 14.3 21.0 28.2 29.6 30.9 30.1 26.2 18.6 13.5 7.4 19.5 MINIMUN AIR TEMPERATURE (C) -0.8 1.7 4.2 9.9 16.1 18.1 20.7 19.5 14.2 9.0 3.4 -0.8 9.6 DAYS WITH MINIMUM TEMP. >=21 0 0 0 0 0 4 11 8 0 0 0 0 23 DAYS WITH MINIMUM TEMP. <=-4 6 1 1 0 0 0 0 0 0 0 0 5 13 DAYS WITH FREEZING MIN.<= 0 21 11 6 0 0 0 0 0 0 0 3 21 62 TEMPERATURE RECORDS LOWEST(C) -7.6 -5.2 -4.6 4.2 12.0 13.2 16.4 15.4 10.0 3.6 -1.0 -12.6 -12.6 DAY 31 1 22 2 15 1 20 7 29 20 25 29 MAXIMUM AIR TEMPERATURE (C) 12.2 15.2 20.4 26.6 34.3 37.7 37.8 38.7 35.1 27.9 22.3 16.4 27.1 DAYS WITH MAXIMUM TEMP. >=30 0 0 2 8 27 30 29 31 30 7 0 0 164 DAYS WITH MAXIMUM TEMP. <= 0 0 0 0 0 0 0 0 0 0 0 0 1 1 TEMPERATURE RECORDS HIGHEST(C) 18.6 21.4 31.4 32.6 38.8 42.0 41.8 41.0 39.2 34.0 27.6 23.0 42.0 DAY 7 19 13 15 22 29 3 11 7 1 12 6 DIF. BETWEEN (MAX.-MIN.) (C) 13.0 13.5 16.2 16.7 18.2 19.6 17.1 19.2 20.9 18.9 18.9 17.2 17.5 MEAN DAILY TEMP. (MDT) (C) 5.7 8.4 12.3 18.3 25.2 27.9 29.2 29.1 24.6 18.4 12.8 7.8 18.3 COOLING DEG. DAYS(BASE 21 0C) 0.0 0.0 0.5 12.6 129.8 206.9 242.4 251.9 109.5 7.7 0.0 0.0 961.4 HEATING DEG. DAYS(BASE 18 0C) 382.0 268.2 184.5 36.3 0.0 0.0 0.0 0.0 0.0 26.4 156.5 316.3 1370.2 DEWPOINT (MEAN C) -5.0 -3.5 -6.5 -4.8 1.9 0.2 1.9 -0.4 -1.0 -3.5 -6.6 -6.0 -2.8 MIXING RATIO (G/KG) 3.27 3.74 2.95 3.68 5.24 4.73 5.34 4.68 4.67 3.51 2.79 2.93 3.96 VAPOUR PRESSURE (HPA) 4.49 5.12 4.06 5.03 7.15 6.44 7.25 6.37 6.37 4.84 3.85 4.04 5.42 SATURATION DEF. (HPA) 5.63 6.48 13.90 21.40 33.23 37.95 39.54 39.01 30.32 18.37 12.93 7.38 22.18 RELATIVE HUMIDITY (MEAN %) 50 49 29 23 20 17 17 16 19 25 27 43 28 RELATIVE HUMIDITY (MAX. %) 70 69 49 44 33 26 28 26 30 39 45 60 43 RELATIVE HUMIDITY (MIN. %) 32 30 17 12 13 10 11 8 11 13 16 25 17 RELATIVE HUMIDITY (MEAN% 03UTC) 66 66 49 39 32 24 27 25 30 38 44 58 42 RELATIVE HUMIDITY (MEAN% 09UTC) 42 36 22 16 15 11 13 10 12 16 19 32 20 RELATIVE HUMIDITY (MEAN% 15UTC) 43 40 22 18 15 12 12 10 15 19 25 37 22 RH=0 => RELATIVE HUMIDITY < 0.5% AMOUNT OF PRECIPITATION MM. 23.6 16.1 4.1 0.7 0.0 0.0 2.0 0.0 0.0 0.0 1.0 7.6 55.1 DAYS WITH PRECIPITATION >=10 1 1 0 0 0 0 0 0 0 0 0 0 2 DAYS WITH PRECIPITATION >= 5 1 2 0 0 0 0 0 0 0 0 0 0 3 DAYS WITH PRECIPITATION >= 1 4 2 2 0 0 0 1 0 0 0 0 3 12 DAYS WITH PRECIPITATION 7 3 2 1 0 0 1 0 0 0 2 4 20 GREATEST DAILY PRECIPITATION 13.0 10.0 2.9 0.7 0.0 0.0 2.0 0.0 0.0 0.0 0.5 3.3 13.0 DAY 10 6 28 3 ** ** 13 ** ** ** 28 27 DAY WITH THUNDER STORM 0 0 0 0 0 0 0 0 0 0 0 0 0 DAYS WITH SNOW OR SLEET 2 0 0 0 0 0 0 0 0 0 0 3 5 DAYS WITH DUST 2 2 3 4 2 1 2 2 0 0 0 1 19 WIND DIRECTION (PREVAILING) 225 225 45 270 360 45 360 360 45 225 225 225 225 PREVAILING WIND SPEED(KNOTS) 10.8 10.7 6.2 11.9 7.7 6.4 8.5 8.7 5.8 5.4 5.7 9.8 8.1 PREVAILING WIND PERCENT 15.6 13.0 13.5 18.0 18.0 16.4 31.7 14.1 15.0 12.9 10.1 13.0 11.0 CALMS PERCENT OF WIND 56.3 49.8 42.3 34.0 33.1 37.7 30.2 48.8 56.1 57.7 76.0 64.0 49.8 NO. OF WIND OBSERVATION 192 223 156 150 172 220 205 248 214 241 208 247 2476 VECTOR WIND DIRECTION (MEAN) 241 226 307 270 320 339 1 5 359 289 225 241 300 VECTOR WIND MAGNITUDE(KNOTS) 2.1 2.3 1.9 2.9 2.1 2.1 3.8 1.2 1.1 1.1 0.7 1.5 1.2 WIND STEADINESES (MEAN %) 52.5 50.0 38.0 44.6 38.9 47.7 69.1 33.3 40.7 42.3 43.8 51.7 29.3 WIND SPEED (MEAN KNOTS) 4.0 4.6 5.0 6.5 5.4 4.4 5.5 3.6 2.7 2.6 1.6 2.9 4.1 FASTEST WIND DIRECTION 240 210 210 240 210 330 330 20 30 30 190 240 240 FASTEST WIND SPEED (KNOTS) 19 23 29 29 25 16 17 23 12 14 16 31 31 DAY 2 2 14 16 12 7 7 5 13 6 12 25 DAYS WITH SKY CLEAR (0-2)/8 14 17 22 13 25 29 26 27 30 30 25 19 277 DAYS WITH P.CLOUDY (3-6)/8 11 6 9 14 6 1 5 4 0 1 4 10 71 DAYS WITH CLOUDY (7-8)/8 6 5 0 3 0 0 0 0 0 0 1 2 17 DAYS WITH VISIBILITY =< 2 KM 1 1 0 0 0 0 0 0 0 0 0 1 3 DURATION OF SUNSHINE HOURS ****** ****** 280.1 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ANAR (40839) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 30 53 N LONGITUDE 55 15 E DATA PROCESSING CENTER ELEVATION 1408.8 M MEANS AND EXTREMES FOR THE YEAR 1990 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL MEAN QFE PRESSURE IN HPA 860.0 857.1 860.2 856.9 856.1 853.7 852.3 853.7 856.3 861.9 862.9 861.5 857.7 MAX. QFE PRESSURE IN HPA 869.8 866.6 869.8 863.2 862.3 859.5 858.4 858.7 862.6 870.0 871.1 871.2 871.2 DAY-HOUR 26- 6 8- 6 10- 6 25- 6 16- 6 1- 6 15- 6 4- 6 27- 6 19- 6 23- 6 28- 6 MIN. QFE PRESSURE IN HPA 853.6 849.2 852.4 849.4 848.2 847.0 844.8 848.9 851.1 853.6 855.2 849.8 844.8 DAY-HOUR 16-12 16- 0 27-12 16-12 12-15 26-15 4-15 8-15 3-15 1-15 1-12 25-12 MEAN QNH PRESSURE IN HPA 1018.6 1015.3 1018.8 1015.0 1014.2 1011.5 1009.8 1011.3 1014.4 1020.8 1022.0 1020.4 1016.0 MAX. QNH PRESSURE IN HPA 1029.9 1026.2 1029.9 1022.3 1021.3 1018.1 1016.8 1017.1 1021.6 1030.1 1031.4 1031.5 1031.5 DAY-HOUR 26- 6 8- 6 10- 6 25- 6 16- 6 1- 6 15- 6 4- 6 27- 6 19- 6 23- 6 28- 6 MIN. QNH PRESSURE IN HPA 1011.3 1006.2 1009.9 1006.5 1005.1 1003.7 1001.2 1005.9 1008.4 1011.3 1013.1 1006.9 1001.2 DAY-HOUR 16-12 16- 0 27-12 16-12 12-15 26-15 4-15 8-15 3-15 1-15 1-12 25-12 MEAN QFF PRESSURE IN HPA 1018.3 1013.5 ****** ****** ****** 998.6 996.4 997.4 1002.3 1013.7 1017.3 1019.5 ****** MAX. QFF PRESSURE IN HPA 1032.1 1027.1 ****** ****** ****** 1007.4 1003.3 1003.7 1012.4 1026.5 1029.1 1039.0 ****** DAY-HOUR 27- 3 8- 6 **-** **-** **-** 1- 3 15- 3 16- 6 27- 3 19- 3 23- 3 29- 3 MIN. QFF PRESSURE IN HPA 1007.0 1000.6 ****** ****** ****** 989.3 985.3 991.3 994.5 1002.7 1007.2 1001.5 ****** DAY-HOUR 2- 0 16- 0 **-** **-** **-** 27-15 4-15 9-12 5-12 1-15 1-12 25-12 PRESSURE AT HOUR 0000 UTC. MEAN QFE PRESSURE IN HPA ****** 856.8 ****** ****** ****** 854.3 853.0 853.5 855.5 862.2 862.0 861.4 ****** MAX. QFE PRESSURE IN HPA ****** 864.6 ****** ****** ****** 858.4 856.3 857.2 859.5 868.2 867.8 869.8 ****** DAY ** 8 ** ** ** 1 16 4 22 19 15 29 MIN. QFE PRESSURE IN HPA ****** 849.2 ****** ****** ****** 850.6 850.0 850.8 853.0 858.6 857.0 852.7 ****** DAY ** 16 ** ** ** 14 30 9 4 14 1 26 MEAN QNH PRESSURE IN HPA ****** 1014.9 ****** ****** ****** 1012.0 1010.6 1011.2 1013.4 1021.1 1020.9 1020.3 ****** MAX. QNH PRESSURE IN HPA ****** 1023.9 ****** ****** ****** 1016.8 1014.4 1015.4 1018.1 1028.0 1027.6 1029.9 ****** DAY ** 8 ** ** ** 1 16 4 22 19 15 29 MIN. QNH PRESSURE IN HPA ****** 1006.2 ****** ****** ****** 1007.8 1007.2 1008.1 1010.6 1017.0 1015.2 1010.3 ****** DAY ** 16 ** ** ** 14 30 9 4 14 1 26 MEAN QFF PRESSURE IN HPA ****** 1012.6 ****** ****** ****** 999.4 997.3 997.4 1001.2 1013.2 1015.4 1018.5 ****** MAX. QFF PRESSURE IN HPA ****** 1023.8 ****** ****** ****** 1007.0 1001.0 1002.9 1007.7 1023.8 1024.8 1037.6 ****** DAY ** 8 ** ** ** 1 16 4 22 19 15 29 MIN. QFF PRESSURE IN HPA ****** 1000.6 ****** ****** ****** 993.9 991.9 991.9 996.5 1008.0 1008.8 1007.2 ****** DAY ** 16 ** ** ** 14 31 9 4 4 1 26 PRESSURE AT HOUR 0300 UTC. MEAN QFE PRESSURE IN HPA 860.4 857.8 861.1 857.8 857.4 854.7 853.2 854.7 857.7 862.8 863.8 862.3 858.6 MAX. QFE PRESSURE IN HPA 867.5 865.2 868.4 862.5 861.6 859.2 858.0 858.0 861.6 869.2 869.7 870.0 870.0 DAY 20 8 10 25 16 1 15 3 26 19 23 29 MIN. QFE PRESSURE IN HPA 855.0 849.9 856.4 852.6 849.4 849.4 847.4 852.2 854.0 857.5 857.3 854.9 847.4 DAY 2 16 25 16 13 27 4 9 4 2 1 26 MEAN QNH PRESSURE IN HPA 1019.1 1016.1 1019.9 1016.1 1015.6 1012.6 1010.8 1012.6 1016.0 1021.8 1023.0 1021.2 1017.1 MAX. QNH PRESSURE IN HPA 1027.2 1024.6 1028.3 1021.5 1020.5 1017.7 1016.3 1016.3 1020.5 1029.2 1029.8 1030.1 1030.1 DAY 20 8 10 25 16 1 15 3 26 19 23 29 MIN. QNH PRESSURE IN HPA 1012.9 1007.0 1014.5 1010.1 1006.5 1006.5 1004.2 1009.7 1011.8 1015.8 1015.5 1012.8 1004.2 DAY 2 16 25 16 13 27 4 9 4 2 1 26 MEAN QFF PRESSURE IN HPA 1020.0 1015.3 1016.9 1009.2 1004.2 999.5 997.2 999.4 1005.9 1015.7 1020.6 1021.6 1010.5 MAX. QFF PRESSURE IN HPA 1032.1 1026.1 1027.1 1015.6 1011.2 1007.4 1003.3 1003.4 1012.4 1026.5 1029.1 1039.0 1039.0 DAY 27 1 21 25 16 1 15 3 27 19 23 29 MIN. QFF PRESSURE IN HPA 1009.9 1003.4 1009.1 1000.7 993.8 991.6 988.1 994.8 999.3 1006.7 1010.9 1010.4 988.1 DAY 2 16 25 16 13 27 4 9 4 2 1 25 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ANAR (40839) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 30 53 N LONGITUDE 55 15 E DATA PROCESSING CENTER ELEVATION 1408.8 M MEANS AND EXTREMES FOR THE YEAR 1990 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 0600 UTC. MEAN QFE PRESSURE IN HPA 861.8 858.9 862.3 858.5 858.0 855.1 853.6 855.4 858.5 863.9 865.2 863.4 859.5 MAX. QFE PRESSURE IN HPA 869.8 866.6 869.8 863.2 862.3 859.5 858.4 858.7 862.6 870.0 871.1 871.2 871.2 DAY 26 8 10 25 16 1 15 4 27 19 23 28 MIN. QFE PRESSURE IN HPA 856.0 851.3 857.4 852.6 850.0 850.0 848.4 852.9 854.7 858.0 858.4 854.8 848.4 DAY 2 16 25 16 13 27 4 9 4 1 1 25 MEAN QNH PRESSURE IN HPA 1020.6 1017.4 1021.2 1016.9 1016.3 1013.1 1011.3 1013.3 1017.0 1023.1 1024.6 1022.6 1018.1 MAX. QNH PRESSURE IN HPA 1029.9 1026.2 1029.9 1022.3 1021.3 1018.1 1016.8 1017.1 1021.6 1030.1 1031.4 1031.5 1031.5 DAY 26 8 10 25 16 1 15 4 27 19 23 28 MIN. QNH PRESSURE IN HPA 1014.0 1008.6 1015.7 1010.1 1007.2 1007.2 1005.3 1010.5 1012.6 1016.3 1016.8 1012.7 1005.3 DAY 2 16 25 16 13 27 4 9 4 1 1 25 MEAN QFF PRESSURE IN HPA ****** 1015.7 ****** ****** ****** 1000.5 998.1 999.0 1003.7 1016.4 1019.2 1022.3 ****** MAX. QFF PRESSURE IN HPA ****** 1027.1 ****** ****** ****** 1007.3 1000.6 1003.7 1010.8 1025.6 1027.4 1038.9 ****** DAY ** 8 ** ** ** 1 16 16 22 19 15 29 MIN. QFF PRESSURE IN HPA ****** 1005.4 ****** ****** ****** 995.1 994.4 994.7 999.2 1011.2 1011.6 1009.0 ****** DAY ** 16 ** ** ** 23 31 9 2 14 1 25 PRESSURE AT HOUR 0900 UTC. MEAN QFE PRESSURE IN HPA 860.1 857.6 860.6 857.2 856.4 854.0 852.4 854.0 857.0 861.9 863.3 861.5 858.0 MAX. QFE PRESSURE IN HPA 869.4 865.0 868.1 862.1 860.8 858.6 857.0 857.4 861.2 868.4 869.3 870.1 870.1 DAY 26 8 10 3 16 4 15 3 26 19 23 28 MIN. QFE PRESSURE IN HPA 854.4 851.6 854.8 850.4 850.0 849.1 847.4 851.6 853.2 856.6 856.7 852.6 847.4 DAY 2 24 27 16 13 27 4 9 4 1 1 25 MEAN QNH PRESSURE IN HPA 1018.8 1015.8 1019.3 1015.5 1014.5 1011.8 1009.9 1011.7 1015.2 1020.8 1022.4 1020.4 1016.3 MAX. QNH PRESSURE IN HPA 1029.4 1024.4 1027.9 1021.0 1019.6 1017.0 1015.2 1015.7 1020.0 1028.3 1029.3 1030.2 1030.2 DAY 26 8 10 3 16 4 15 3 26 19 23 28 MIN. QNH PRESSURE IN HPA 1012.2 1009.0 1012.7 1007.6 1007.2 1006.1 1004.2 1009.0 1010.8 1014.7 1014.8 1010.1 1004.2 DAY 2 24 27 16 13 27 4 9 4 1 1 25 MEAN QFF PRESSURE IN HPA ****** 1013.3 ****** ****** ****** 999.3 997.0 997.3 1001.3 1013.2 1015.6 1018.5 ****** MAX. QFF PRESSURE IN HPA ****** 1024.3 ****** ****** ****** 1005.8 999.7 1001.9 1007.8 1023.4 1023.7 1036.1 ****** DAY ** 8 ** ** ** 1 17 16 22 19 15 28 MIN. QFF PRESSURE IN HPA ****** 1005.4 ****** ****** ****** 993.2 993.1 992.6 996.7 1007.3 1008.7 1005.0 ****** DAY ** 16 ** ** ** 14 31 9 4 14 1 25 PRESSURE AT HOUR 1200 UTC. MEAN QFE PRESSURE IN HPA 858.6 855.6 858.4 855.4 854.4 852.4 850.8 852.3 855.3 860.2 861.8 860.0 856.3 MAX. QFE PRESSURE IN HPA 867.6 863.2 865.5 860.9 858.6 857.2 855.0 855.6 860.0 866.6 868.0 868.8 868.8 DAY 26 8 10 3 17 4 15 3 27 19 23 28 MIN. QFE PRESSURE IN HPA 853.6 850.0 852.4 849.4 848.6 847.7 845.4 849.9 851.2 854.0 855.2 849.8 845.4 DAY 16 24 27 16 12 27 4 9 5 1 1 25 MEAN QNH PRESSURE IN HPA 1017.1 1013.5 1016.8 1013.4 1012.2 1009.9 1008.1 1009.8 1013.2 1018.9 1020.7 1018.6 1014.4 MAX. QNH PRESSURE IN HPA 1027.4 1022.3 1024.9 1019.7 1017.0 1015.4 1012.9 1013.6 1018.6 1026.2 1027.8 1028.7 1028.7 DAY 26 8 10 3 17 4 15 3 27 19 23 28 MIN. QNH PRESSURE IN HPA 1011.3 1007.2 1009.9 1006.5 1005.6 1004.5 1001.9 1007.0 1008.5 1011.8 1013.1 1006.9 1001.9 DAY 16 24 27 16 12 27 4 9 5 1 1 25 MEAN QFF PRESSURE IN HPA ****** 1010.9 ****** ****** ****** 998.0 995.7 996.1 999.7 1011.6 1014.0 1016.8 ****** MAX. QFF PRESSURE IN HPA ****** 1022.0 ****** ****** ****** 1005.1 998.9 1001.1 1006.2 1021.9 1022.3 1034.6 ****** DAY ** 8 ** ** ** 1 16 3 22 19 14 28 MIN. QFF PRESSURE IN HPA ****** 1002.9 ****** ****** ****** 993.1 991.2 991.3 994.5 1006.2 1007.2 1001.5 ****** DAY ** 15 ** ** ** 14 31 9 5 14 1 25 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ANAR (40839) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 30 53 N LONGITUDE 55 15 E DATA PROCESSING CENTER ELEVATION 1408.8 M MEANS AND EXTREMES FOR THE YEAR 1990 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 1500 UTC. MEAN QFE PRESSURE IN HPA 859.3 856.1 858.7 855.5 854.4 851.9 850.6 852.1 855.3 860.5 862.3 860.6 856.4 MAX. QFE PRESSURE IN HPA 867.9 863.2 865.3 860.7 858.6 857.2 855.1 855.5 859.8 866.9 868.2 869.4 869.4 DAY 26 8 10 3 17 4 15 3 26 19 23 28 MIN. QFE PRESSURE IN HPA 854.0 850.8 853.4 849.7 848.2 847.0 844.8 848.9 851.1 853.6 855.8 851.3 844.8 DAY 17 15 27 6 12 26 4 8 3 1 1 25 MEAN QNH PRESSURE IN HPA 1017.9 1014.2 1017.1 1013.4 1012.2 1009.4 1007.9 1009.6 1013.2 1019.2 1021.2 1019.4 1014.6 MAX. QNH PRESSURE IN HPA 1027.7 1022.3 1024.7 1019.4 1017.0 1015.4 1013.0 1013.5 1018.4 1026.6 1028.0 1029.4 1029.4 DAY 26 8 10 3 17 4 15 3 26 19 23 28 MIN. QNH PRESSURE IN HPA 1011.8 1008.1 1011.1 1006.8 1005.1 1003.7 1001.2 1005.9 1008.4 1011.3 1013.8 1008.6 1001.2 DAY 17 15 27 6 12 26 4 8 3 1 1 25 MEAN QFF PRESSURE IN HPA 1018.8 1013.2 1014.0 1006.5 1000.7 996.2 994.3 996.4 1003.0 1013.1 1018.7 1019.7 1007.9 MAX. QFF PRESSURE IN HPA 1031.0 1023.1 1024.4 1013.7 1007.0 1004.6 999.9 1001.0 1010.4 1024.1 1027.6 1037.2 1037.2 DAY 26 8 21 3 16 1 15 15 27 19 23 28 MIN. QFF PRESSURE IN HPA 1010.7 1004.1 1006.5 996.8 993.9 989.3 985.3 992.0 995.0 1002.7 1009.0 1004.5 985.3 DAY 1 10 25 15 12 27 4 10 3 1 1 25 PRESSURE AT HOUR 1800 UTC. MEAN QFE PRESSURE IN HPA ****** 857.2 ****** ****** ****** 853.9 853.0 853.5 855.2 862.0 862.2 861.5 ****** MAX. QFE PRESSURE IN HPA ****** 864.8 ****** ****** ****** 858.0 856.7 857.2 858.8 868.0 868.8 870.0 ****** DAY ** 7 ** ** ** 4 15 3 21 18 14 28 MIN. QFE PRESSURE IN HPA ****** 851.2 ****** ****** ****** 850.0 849.5 850.1 852.6 857.6 856.7 851.3 ****** DAY ** 15 ** ** ** 13 30 8 3 31 1 25 MEAN QNH PRESSURE IN HPA ****** 1015.4 ****** ****** ****** 1011.6 1010.6 1011.2 1013.1 1020.9 1021.1 1020.3 ****** MAX. QNH PRESSURE IN HPA ****** 1024.1 ****** ****** ****** 1016.3 1014.8 1015.4 1017.3 1027.8 1028.7 1030.1 ****** DAY ** 7 ** ** ** 4 15 3 21 18 14 28 MIN. QNH PRESSURE IN HPA ****** 1008.5 ****** ****** ****** 1007.2 1006.6 1007.3 1010.1 1015.9 1014.8 1008.6 ****** DAY ** 15 ** ** ** 13 30 8 3 31 1 25 MEAN QFF PRESSURE IN HPA ****** 1014.0 ****** ****** ****** 998.0 996.4 996.9 1001.1 1013.7 1016.8 1020.1 ****** MAX. QFF PRESSURE IN HPA ****** 1024.7 ****** ****** ****** 1005.0 1000.7 1001.4 1007.5 1022.7 1026.4 1038.8 ****** DAY ** 7 ** ** ** 1 15 4 21 18 14 28 MIN. QFF PRESSURE IN HPA ****** 1004.6 ****** ****** ****** 993.1 991.7 991.9 996.3 1008.5 1009.8 1003.7 ****** DAY ** 15 ** ** ** 13 30 8 2 5 1 25 PRESSURE AT HOUR 2100 UTC. MEAN QFE PRESSURE IN HPA ****** 857.1 ****** ****** ****** 854.0 853.2 853.8 855.4 862.0 862.2 861.4 ****** MAX. QFE PRESSURE IN HPA ****** 864.8 ****** ****** ****** 858.1 856.7 857.5 858.8 868.0 869.0 870.0 ****** DAY ** 7 ** ** ** 1 15 4 21 18 14 28 MIN. QFE PRESSURE IN HPA ****** 849.7 ****** ****** ****** 850.2 850.0 850.9 852.8 857.1 856.9 851.2 ****** DAY ** 15 ** ** ** 13 30 8 3 31 1 25 MEAN QNH PRESSURE IN HPA ****** 1015.3 ****** ****** ****** 1011.7 1010.8 1011.6 1013.4 1020.9 1021.2 1020.2 ****** MAX. QNH PRESSURE IN HPA ****** 1024.1 ****** ****** ****** 1016.5 1014.8 1015.8 1017.3 1027.8 1029.0 1030.1 ****** DAY ** 7 ** ** ** 1 15 4 21 18 14 28 MIN. QNH PRESSURE IN HPA ****** 1006.8 ****** ****** ****** 1007.4 1007.2 1008.2 1010.4 1015.3 1015.1 1008.5 ****** DAY ** 15 ** ** ** 13 30 8 3 31 1 25 MEAN QFF PRESSURE IN HPA ****** 1013.0 ****** ****** ****** 998.3 996.9 997.2 1000.8 1012.8 1015.5 1018.4 ****** MAX. QFF PRESSURE IN HPA ****** 1024.2 ****** ****** ****** 1006.1 1000.2 1002.1 1006.4 1022.4 1025.8 1037.9 ****** DAY ** 7 ** ** ** 1 15 4 21 18 14 28 MIN. QFF PRESSURE IN HPA ****** 1001.0 ****** ****** ****** 991.8 992.2 991.8 996.5 1007.6 1008.9 1002.2 ****** DAY ** 15 ** ** ** 13 30 8 4 3 1 25 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ANAR (40839) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 30 53 N LONGITUDE 55 15 E DATA PROCESSING CENTER ELEVATION 1408.8 M MEANS AND EXTREMES FOR THE YEAR 1991 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AIR TEMPERATURE (C) 6.5 7.4 12.5 19.7 23.8 28.7 31.4 28.3 23.7 17.7 11.7 9.8 18.4 MINIMUN AIR TEMPERATURE (C) 0.0 0.1 6.4 11.6 14.7 18.7 20.2 17.4 13.1 8.9 2.8 4.2 9.8 DAYS WITH MINIMUM TEMP. >=21 0 0 0 0 2 6 8 4 0 0 0 0 20 DAYS WITH MINIMUM TEMP. <=-4 7 5 0 0 0 0 0 0 0 0 0 6 18 DAYS WITH FREEZING MIN.<= 0 19 16 1 0 0 0 0 0 0 0 9 12 57 TEMPERATURE RECORDS LOWEST(C) -6.8 -10.0 -1.0 5.4 7.0 14.2 17.6 11.6 5.4 4.0 -2.6 -6.0 -10.0 DAY 7 16 2 2 24 26 29 24 29 30 28 18 MAXIMUM AIR TEMPERATURE (C) 13.0 14.6 19.0 26.7 31.7 36.8 39.0 37.2 33.2 26.3 20.3 16.5 26.2 DAYS WITH MAXIMUM TEMP. >=30 0 0 0 7 23 30 31 30 22 0 0 0 143 DAYS WITH MAXIMUM TEMP. <= 0 0 0 0 0 0 0 0 0 0 0 0 0 0 TEMPERATURE RECORDS HIGHEST(C) 19.8 22.8 25.2 32.6 37.8 41.2 43.0 41.2 40.2 29.2 27.2 23.8 43.0 DAY 24 27 19 24 31 7 14 8 9 11 4 10 DIF. BETWEEN (MAX.-MIN.) (C) 13.0 14.5 12.6 15.1 17.0 18.1 18.8 19.8 20.1 17.4 17.5 12.3 16.4 MEAN DAILY TEMP. (MDT) (C) 6.5 7.3 12.7 19.2 23.2 27.7 29.6 27.3 23.2 17.6 11.6 10.4 18.0 COOLING DEG. DAYS(BASE 21 0C) 0.0 0.0 0.0 21.1 80.3 201.3 266.0 188.7 87.8 0.0 0.0 0.0 845.3 HEATING DEG. DAYS(BASE 18 0C) 355.3 298.6 164.8 28.4 0.8 0.0 0.0 0.0 8.8 22.1 193.0 237.8 1309.5 DEWPOINT (MEAN C) -1.9 -5.2 3.1 1.0 0.2 0.3 3.9 -1.8 -3.3 -0.5 -3.6 -1.3 -0.8 MIXING RATIO (G/KG) 4.16 3.36 5.88 5.06 4.77 4.73 6.20 4.20 3.64 4.56 3.51 4.36 4.54 VAPOUR PRESSURE (HPA) 5.71 4.61 8.03 6.92 6.50 6.44 8.40 5.72 5.00 6.27 4.84 5.98 6.20 SATURATION DEF. (HPA) 4.56 6.72 7.21 17.52 24.86 35.14 40.12 35.58 27.07 15.15 10.02 7.21 19.26 RELATIVE HUMIDITY (MEAN %) 60 45 57 33 25 17 20 16 19 33 39 50 35 RELATIVE HUMIDITY (MAX. %) 79 65 78 53 42 28 34 27 32 50 56 73 51 RELATIVE HUMIDITY (MIN. %) 37 27 36 17 13 10 12 8 10 18 23 31 20 RELATIVE HUMIDITY (MEAN% 03UTC) 73 63 74 51 38 26 32 25 31 49 55 65 49 RELATIVE HUMIDITY (MEAN% 09UTC) 44 34 44 21 16 12 14 10 12 22 26 37 24 RELATIVE HUMIDITY (MEAN% 15UTC) 52 35 46 23 16 12 14 11 15 25 33 42 27 RH=0 => RELATIVE HUMIDITY < 0.5% AMOUNT OF PRECIPITATION MM. 35.1 8.4 48.0 8.7 2.0 0.0 0.0 0.0 0.0 0.8 0.0 11.2 114.2 DAYS WITH PRECIPITATION >=10 2 0 1 0 0 0 0 0 0 0 0 0 3 DAYS WITH PRECIPITATION >= 5 4 1 4 1 0 0 0 0 0 0 0 0 10 DAYS WITH PRECIPITATION >= 1 4 2 8 2 1 0 0 0 0 0 0 3 20 DAYS WITH PRECIPITATION 5 2 13 4 1 0 0 0 0 1 0 5 31 GREATEST DAILY PRECIPITATION 10.7 7.0 14.0 6.0 2.0 0.0 0.0 0.0 0.0 0.8 0.0 4.0 14.0 DAY 19 28 1 1 3 ** ** ** ** 17 ** 12 DAY WITH THUNDER STORM 0 1 3 5 2 0 0 0 0 2 0 0 13 DAYS WITH SNOW OR SLEET 1 1 0 0 0 0 0 0 0 0 0 2 4 DAYS WITH DUST 0 1 2 2 9 1 2 1 1 1 0 2 22 WIND DIRECTION (PREVAILING) 225 180 225 225 270 360 360 360 360 225 225 180 225 PREVAILING WIND SPEED(KNOTS) 11.0 10.3 11.1 8.8 8.8 8.0 8.1 7.4 7.4 5.8 5.1 12.7 8.5 PREVAILING WIND PERCENT 11.5 12.2 13.3 12.1 19.8 19.3 23.4 24.6 14.6 11.7 7.5 21.8 10.9 CALMS PERCENT OF WIND 63.7 49.8 48.4 45.0 37.9 44.5 53.3 44.8 50.0 61.7 73.3 44.0 51.3 NO. OF WIND OBSERVATION 234 205 248 240 248 238 214 248 240 248 240 248 2851 VECTOR WIND DIRECTION (MEAN) 230 228 233 278 300 344 5 346 336 285 269 207 278 VECTOR WIND MAGNITUDE(KNOTS) 1.8 2.0 1.9 2.0 2.8 2.2 2.9 2.0 1.4 0.9 0.5 5.1 1.2 WIND STEADINESES (MEAN %) 54.5 46.5 41.3 44.4 54.9 56.4 82.9 54.1 43.7 39.1 33.3 83.6 31.6 WIND SPEED (MEAN KNOTS) 3.3 4.3 4.6 4.5 5.1 3.9 3.5 3.7 3.2 2.3 1.5 6.1 3.8 FASTEST WIND DIRECTION 210 240 210 180 330 360 20 360 330 320 330 210 330 FASTEST WIND SPEED (KNOTS) 19 23 21 23 39 16 16 14 14 16 14 27 39 DAY 23 1 6 5 24 24 22 9 19 16 16 14 DAYS WITH SKY CLEAR (0-2)/8 17 14 10 16 25 28 31 31 29 24 24 9 258 DAYS WITH P.CLOUDY (3-6)/8 8 9 10 14 2 2 0 0 1 6 5 15 72 DAYS WITH CLOUDY (7-8)/8 6 5 11 0 4 0 0 0 0 1 1 7 35 DAYS WITH VISIBILITY =< 2 KM 3 0 0 0 2 0 0 0 0 0 0 2 7 DURATION OF SUNSHINE HOURS ****** ****** 201.3 270.3 320.7 336.3 365.5 357.3 317.2 267.1 254.5 183.7 ****** ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ANAR (40839) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 30 53 N LONGITUDE 55 15 E DATA PROCESSING CENTER ELEVATION 1408.8 M MEANS AND EXTREMES FOR THE YEAR 1991 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL MEAN QFE PRESSURE IN HPA 860.2 859.9 857.5 858.2 854.8 853.7 851.5 853.6 858.7 862.3 863.0 860.3 857.8 MAX. QFE PRESSURE IN HPA 868.8 871.7 863.8 863.8 861.0 860.4 857.2 858.7 865.0 867.0 868.2 867.8 871.7 DAY-HOUR 12- 6 15- 6 29- 6 19- 6 9- 6 23- 6 1- 6 23- 6 27- 6 20- 6 24- 6 7- 6 MIN. QFE PRESSURE IN HPA 849.5 851.4 850.0 850.5 849.5 846.6 844.3 847.2 852.4 858.1 856.7 851.8 844.3 DAY-HOUR 25-12 8-12 7- 0 11-12 28-12 11-15 14-12 11-15 8-12 30-12 6-12 22-12 MEAN QNH PRESSURE IN HPA 1018.9 1018.5 1015.8 1016.6 1012.7 1011.4 1008.9 1011.3 1017.1 1021.2 1022.1 1019.0 1016.1 MAX. QNH PRESSURE IN HPA 1028.7 1032.1 1023.0 1023.0 1019.8 1019.1 1015.4 1017.1 1024.4 1026.7 1028.0 1027.6 1032.1 DAY-HOUR 12- 6 15- 6 29- 6 19- 6 9- 6 23- 6 1- 6 23- 6 27- 6 20- 6 24- 6 7- 6 MIN. QNH PRESSURE IN HPA 1006.6 1008.8 1007.2 1007.7 1006.6 1003.3 1000.6 1003.9 1009.9 1016.5 1014.8 1009.2 1000.6 DAY-HOUR 25-12 8-12 7- 0 11-12 28-12 11-15 14-12 11-15 8-12 30-12 6-12 22-12 MEAN QFF PRESSURE IN HPA 1018.5 1018.1 1011.4 1008.3 1002.1 998.2 994.3 998.4 1006.7 1014.2 1018.6 1016.4 1008.8 MAX. QFF PRESSURE IN HPA 1031.3 1036.2 1022.1 1017.5 1011.6 1007.0 1001.5 1005.1 1018.5 1021.0 1026.9 1028.8 1036.2 DAY-HOUR 12- 6 15- 6 12- 6 14- 6 25-18 25- 3 1- 3 28- 3 28- 3 28- 6 17- 3 18- 3 MIN. QFF PRESSURE IN HPA 1001.6 1004.0 999.2 998.4 994.1 989.4 984.8 987.3 996.8 1008.3 1007.0 1005.9 984.8 DAY-HOUR 25-12 28-12 6-21 10-12 18-12 12-12 14-12 12-12 8-12 23-12 6-12 1-12 PRESSURE AT HOUR 0000 UTC. MEAN QFE PRESSURE IN HPA 859.9 860.3 857.2 858.0 854.8 853.7 851.2 853.5 858.4 862.1 863.1 860.4 857.7 MAX. QFE PRESSURE IN HPA 867.0 869.0 862.6 862.6 859.4 858.4 854.2 856.9 863.1 865.0 866.0 865.8 869.0 DAY 13 16 13 19 9 24 22 23 28 20 13 8 MIN. QFE PRESSURE IN HPA 850.0 853.5 850.0 854.0 849.9 848.0 847.4 848.4 854.5 859.0 858.2 854.0 847.4 DAY 26 8 7 12 28 12 14 12 8 5 6 26 MEAN QNH PRESSURE IN HPA 1018.5 1019.0 1015.4 1016.4 1012.7 1011.4 1008.5 1011.2 1016.8 1021.1 1022.1 1019.1 1016.0 MAX. QNH PRESSURE IN HPA 1026.7 1029.0 1021.6 1021.6 1017.9 1016.8 1012.0 1015.1 1022.2 1024.4 1025.5 1025.3 1029.0 DAY 13 16 13 19 9 24 22 23 28 20 13 8 MIN. QNH PRESSURE IN HPA 1007.2 1011.2 1007.2 1011.8 1007.0 1004.9 1004.2 1005.3 1012.3 1017.5 1016.6 1011.8 1004.2 DAY 26 8 7 12 28 12 14 12 8 5 6 26 MEAN QFF PRESSURE IN HPA 1017.6 1018.1 1010.5 1007.9 1002.1 998.4 994.2 998.2 1006.0 1013.6 1018.0 1016.0 1008.4 MAX. QFF PRESSURE IN HPA 1027.8 1033.1 1019.4 1014.6 1009.5 1005.7 998.6 1003.5 1016.7 1017.6 1024.9 1027.3 1033.1 DAY 12 16 18 2 9 25 27 24 28 14 17 18 MIN. QFF PRESSURE IN HPA 1003.4 1006.1 1000.7 1001.2 995.1 990.9 989.7 988.5 999.6 1008.7 1008.7 1006.6 988.5 DAY 26 28 7 10 23 12 14 12 8 4 6 26 PRESSURE AT HOUR 0300 UTC. MEAN QFE PRESSURE IN HPA 860.6 860.6 858.2 859.3 856.0 855.0 852.9 854.7 859.6 863.1 863.9 860.8 858.7 MAX. QFE PRESSURE IN HPA 867.2 869.8 863.0 863.6 860.7 859.8 857.0 858.1 863.9 866.2 867.4 866.2 869.8 DAY 12 15 18 19 9 23 1 23 28 28 13 8 MIN. QFE PRESSURE IN HPA 850.8 854.3 851.4 854.6 850.6 849.2 847.0 849.6 855.1 859.9 859.2 854.8 847.0 DAY 26 8 7 10 23 12 14 12 8 4 6 22 MEAN QNH PRESSURE IN HPA 1019.3 1019.3 1016.5 1017.9 1014.0 1012.9 1010.4 1012.5 1018.1 1022.2 1023.1 1019.6 1017.2 MAX. QNH PRESSURE IN HPA 1026.9 1029.9 1022.1 1022.8 1019.4 1018.4 1015.2 1016.5 1023.1 1025.7 1027.1 1025.7 1029.9 DAY 12 15 18 19 9 23 1 23 28 28 13 8 MIN. QNH PRESSURE IN HPA 1008.1 1012.1 1008.8 1012.4 1007.8 1006.2 1003.7 1006.7 1013.0 1018.5 1017.7 1012.7 1003.7 DAY 26 8 7 10 23 12 14 12 8 4 6 22 MEAN QFF PRESSURE IN HPA 1019.7 1019.1 1012.8 1010.3 1003.8 1000.2 996.7 1000.3 1008.8 1016.3 1021.0 1017.8 1010.6 MAX. QFF PRESSURE IN HPA 1030.3 1035.9 1021.3 1016.6 1010.8 1007.0 1001.5 1005.1 1018.5 1020.8 1026.9 1028.8 1035.9 DAY 12 15 12 2 9 25 1 28 28 28 17 18 MIN. QFF PRESSURE IN HPA 1006.4 1007.9 1003.9 1002.4 995.7 992.3 989.8 990.9 1002.3 1010.0 1011.1 1009.9 989.8 DAY 26 28 7 10 23 12 14 12 8 4 6 15 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ANAR (40839) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 30 53 N LONGITUDE 55 15 E DATA PROCESSING CENTER ELEVATION 1408.8 M MEANS AND EXTREMES FOR THE YEAR 1991 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 0600 UTC. MEAN QFE PRESSURE IN HPA 861.9 861.7 859.1 860.1 856.6 855.4 853.3 855.2 860.5 864.1 865.0 861.9 859.6 MAX. QFE PRESSURE IN HPA 868.8 871.7 863.8 863.8 861.0 860.4 857.2 858.7 865.0 867.0 868.2 867.8 871.7 DAY 12 15 29 19 9 23 1 23 27 20 24 7 MIN. QFE PRESSURE IN HPA 852.9 855.2 852.8 854.7 850.8 849.8 846.8 850.4 856.0 861.2 860.5 855.2 846.8 DAY 26 8 7 10 23 12 14 12 3 4 6 22 MEAN QNH PRESSURE IN HPA 1020.8 1020.6 1017.6 1018.8 1014.7 1013.4 1010.9 1013.2 1019.2 1023.3 1024.4 1020.8 1018.1 MAX. QNH PRESSURE IN HPA 1028.7 1032.1 1023.0 1023.0 1019.8 1019.1 1015.4 1017.1 1024.4 1026.7 1028.0 1027.6 1032.1 DAY 12 15 29 19 9 23 1 23 27 20 24 7 MIN. QNH PRESSURE IN HPA 1010.5 1013.1 1010.4 1012.6 1008.1 1006.9 1003.5 1007.6 1014.0 1020.0 1019.2 1013.1 1003.5 DAY 26 8 7 10 23 12 14 12 3 4 6 22 MEAN QFF PRESSURE IN HPA 1020.9 1021.1 1013.4 1010.5 1004.1 1000.1 995.6 999.9 1008.7 1016.4 1021.2 1018.7 1010.9 MAX. QFF PRESSURE IN HPA 1031.3 1036.2 1022.1 1017.5 1011.2 1006.6 999.0 1005.0 1018.2 1021.0 1026.3 1028.3 1036.2 DAY 12 15 12 14 25 25 27 27 28 28 24 24 MIN. QFF PRESSURE IN HPA 1008.1 1007.6 1004.9 1002.5 996.2 992.0 988.1 992.3 1002.5 1011.4 1012.5 1010.4 988.1 DAY 25 28 6 10 23 12 14 12 8 4 5 1 PRESSURE AT HOUR 0900 UTC. MEAN QFE PRESSURE IN HPA 860.4 860.0 857.8 858.5 855.3 854.3 852.0 854.1 859.1 862.5 863.2 860.1 858.1 MAX. QFE PRESSURE IN HPA 866.8 871.1 863.0 862.4 860.6 859.0 856.0 857.3 863.4 865.2 867.0 867.4 871.1 DAY 12 15 12 19 25 23 1 23 27 20 24 7 MIN. QFE PRESSURE IN HPA 851.4 853.2 851.8 853.0 850.6 849.0 845.4 849.4 855.0 859.7 858.6 852.2 845.4 DAY 26 8 7 10 23 12 14 12 3 4 6 22 MEAN QNH PRESSURE IN HPA 1019.1 1018.7 1016.1 1016.9 1013.2 1012.0 1009.5 1011.9 1017.6 1021.5 1022.3 1018.8 1016.5 MAX. QNH PRESSURE IN HPA 1026.4 1031.4 1022.1 1021.4 1019.3 1017.5 1014.0 1015.5 1022.5 1024.6 1026.7 1027.1 1031.4 DAY 12 15 12 19 25 23 1 23 27 20 24 7 MIN. QNH PRESSURE IN HPA 1008.8 1010.8 1009.2 1010.6 1007.8 1006.0 1001.9 1006.5 1012.9 1018.3 1017.0 1009.7 1001.9 DAY 26 8 7 10 23 12 14 12 3 4 6 22 MEAN QFF PRESSURE IN HPA 1018.1 1018.5 1011.4 1008.3 1002.5 998.6 994.2 998.6 1006.5 1013.6 1017.8 1015.7 1008.7 MAX. QFF PRESSURE IN HPA 1028.2 1035.1 1020.3 1015.7 1011.3 1005.4 997.8 1003.3 1015.6 1017.4 1023.6 1025.4 1035.1 DAY 12 15 12 14 25 25 27 23 28 28 24 23 MIN. QFF PRESSURE IN HPA 1004.0 1007.2 1001.7 1000.4 996.2 991.2 985.9 990.4 999.9 1008.7 1009.4 1006.3 985.9 DAY 25 28 6 10 23 12 14 12 8 4 5 22 PRESSURE AT HOUR 1200 UTC. MEAN QFE PRESSURE IN HPA 859.1 858.0 856.1 856.6 853.5 852.4 850.2 852.3 857.2 860.9 861.6 858.8 856.4 MAX. QFE PRESSURE IN HPA 865.8 869.4 861.2 860.4 859.2 857.4 854.6 855.7 861.7 864.2 865.8 865.6 869.4 DAY 12 15 12 14 25 22 1 31 27 21 24 7 MIN. QFE PRESSURE IN HPA 849.5 851.4 850.9 850.5 849.5 846.8 844.3 847.2 852.4 858.1 856.7 851.8 844.3 DAY 25 8 6 11 28 11 14 12 8 30 6 22 MEAN QNH PRESSURE IN HPA 1017.6 1016.4 1014.1 1014.7 1011.1 1009.9 1007.4 1009.8 1015.4 1019.6 1020.5 1017.2 1014.5 MAX. QNH PRESSURE IN HPA 1025.3 1029.4 1020.0 1019.1 1017.7 1015.7 1012.4 1013.7 1020.6 1023.5 1025.3 1025.1 1029.4 DAY 12 15 12 14 25 22 1 31 27 21 24 7 MIN. QNH PRESSURE IN HPA 1006.6 1008.8 1008.2 1007.7 1006.6 1003.5 1000.6 1003.9 1009.9 1016.5 1014.8 1009.2 1000.6 DAY 25 8 6 11 28 11 14 12 8 30 6 22 MEAN QFF PRESSURE IN HPA 1016.7 1016.1 1009.3 1006.2 1000.5 996.9 992.5 996.9 1004.6 1012.1 1016.3 1014.0 1006.8 MAX. QFF PRESSURE IN HPA 1026.5 1033.2 1017.9 1014.1 1010.1 1004.2 996.4 1002.1 1014.4 1015.6 1022.7 1023.7 1033.2 DAY 12 15 12 14 25 25 22 23 27 27 24 23 MIN. QFF PRESSURE IN HPA 1001.6 1004.0 1000.8 998.4 994.1 989.4 984.8 987.3 996.8 1008.3 1007.0 1005.9 984.8 DAY 25 28 15 10 18 12 14 12 8 23 6 1 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ANAR (40839) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 30 53 N LONGITUDE 55 15 E DATA PROCESSING CENTER ELEVATION 1408.8 M MEANS AND EXTREMES FOR THE YEAR 1991 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 1500 UTC. MEAN QFE PRESSURE IN HPA 859.7 858.6 856.5 856.7 853.2 852.0 849.9 852.2 857.3 861.1 862.0 859.6 856.6 MAX. QFE PRESSURE IN HPA 866.8 870.2 862.3 860.2 859.2 857.4 854.0 856.2 862.1 864.4 866.2 866.0 870.2 DAY 12 15 29 18 25 22 1 31 27 20 24 7 MIN. QFE PRESSURE IN HPA 850.6 852.3 850.4 850.8 849.6 846.6 844.4 847.2 852.4 858.2 856.8 853.6 844.4 DAY 25 7 6 12 28 11 14 11 8 4 6 25 MEAN QNH PRESSURE IN HPA 1018.3 1017.0 1014.6 1014.8 1010.8 1009.5 1007.1 1009.7 1015.5 1019.9 1021.0 1018.1 1014.7 MAX. QNH PRESSURE IN HPA 1026.4 1030.3 1021.3 1018.9 1017.7 1015.7 1011.8 1014.3 1021.0 1023.7 1025.7 1025.5 1030.3 DAY 12 15 29 18 25 22 1 31 27 20 24 7 MIN. QNH PRESSURE IN HPA 1007.8 1009.8 1007.6 1008.1 1006.7 1003.3 1000.7 1003.9 1009.9 1016.6 1015.0 1011.3 1000.7 DAY 25 7 6 12 28 11 14 11 8 4 6 25 MEAN QFF PRESSURE IN HPA 1018.6 1016.7 1010.8 1007.2 1000.6 996.7 993.3 997.4 1006.2 1013.9 1018.8 1016.3 1008.0 MAX. QFF PRESSURE IN HPA 1029.4 1035.3 1020.2 1013.9 1010.8 1004.3 998.4 1003.4 1016.0 1017.9 1024.5 1025.8 1035.3 DAY 12 15 12 14 25 22 1 31 28 27 27 17 MIN. QFF PRESSURE IN HPA 1004.3 1004.7 1001.4 1000.0 994.7 989.6 986.4 987.9 999.2 1008.4 1008.3 1008.6 986.4 DAY 25 28 6 10 18 12 14 12 8 4 6 1 PRESSURE AT HOUR 1800 UTC. MEAN QFE PRESSURE IN HPA 860.4 860.1 857.8 858.1 854.5 853.2 850.9 853.5 858.7 862.2 862.9 860.5 857.7 MAX. QFE PRESSURE IN HPA 867.4 870.2 863.4 863.4 859.8 858.4 853.6 857.9 863.2 865.4 866.5 866.6 870.2 DAY 12 15 12 19 25 22 21 31 27 20 24 7 MIN. QFE PRESSURE IN HPA 850.8 853.5 850.2 852.2 850.5 847.2 846.4 848.2 854.0 859.0 857.3 853.2 846.4 DAY 25 7 6 12 27 11 14 11 8 30 6 25 MEAN QNH PRESSURE IN HPA 1019.1 1018.8 1016.1 1016.5 1012.3 1010.8 1008.1 1011.2 1017.1 1021.2 1021.9 1019.2 1016.0 MAX. QNH PRESSURE IN HPA 1027.1 1030.3 1022.5 1022.5 1018.4 1016.8 1011.3 1016.2 1022.3 1024.8 1026.1 1026.2 1030.3 DAY 12 15 12 19 25 22 21 31 27 20 24 7 MIN. QNH PRESSURE IN HPA 1008.1 1011.2 1007.4 1009.7 1007.7 1003.9 1003.0 1005.1 1011.8 1017.5 1015.5 1010.8 1003.0 DAY 25 7 6 12 27 11 14 11 8 30 6 25 MEAN QFF PRESSURE IN HPA 1019.1 1018.5 1011.9 1008.1 1001.6 997.5 993.6 997.9 1006.8 1014.3 1018.6 1017.1 1008.7 MAX. QFF PRESSURE IN HPA 1029.6 1035.3 1021.3 1014.7 1011.6 1004.3 997.6 1003.5 1016.6 1018.7 1024.0 1027.9 1035.3 DAY 12 15 12 14 25 23 26 31 27 27 27 17 MIN. QFF PRESSURE IN HPA 1003.8 1006.0 1000.1 1002.3 995.4 990.3 988.0 990.3 1000.1 1009.5 1009.8 1008.5 988.0 DAY 25 28 6 10 29 11 14 11 8 4 6 1 PRESSURE AT HOUR 2100 UTC. MEAN QFE PRESSURE IN HPA 860.1 859.8 857.8 858.2 854.7 853.5 851.2 853.7 858.7 862.2 862.8 860.4 857.8 MAX. QFE PRESSURE IN HPA 867.3 869.5 863.6 862.7 859.4 858.8 854.0 857.9 863.6 865.4 866.0 865.8 869.5 DAY 12 15 12 19 8 22 21 31 27 27 12 7 MIN. QFE PRESSURE IN HPA 850.2 852.8 850.2 853.8 850.4 847.4 847.0 848.2 854.0 859.7 858.0 853.2 847.0 DAY 25 28 6 11 27 11 13 11 8 3 5 25 MEAN QNH PRESSURE IN HPA 1018.7 1018.4 1016.1 1016.6 1012.5 1011.1 1008.5 1011.4 1017.1 1021.2 1021.9 1019.1 1016.1 MAX. QNH PRESSURE IN HPA 1027.0 1029.5 1022.8 1021.7 1017.9 1017.3 1011.8 1016.2 1022.8 1024.8 1025.5 1025.3 1029.5 DAY 12 15 12 19 8 22 21 31 27 27 12 7 MIN. QNH PRESSURE IN HPA 1007.4 1010.4 1007.4 1011.5 1007.6 1004.2 1003.7 1005.1 1011.8 1018.3 1016.3 1010.8 1003.7 DAY 25 28 6 11 27 11 13 11 8 3 5 25 MEAN QFF PRESSURE IN HPA 1017.7 1017.4 1011.3 1007.8 1001.7 997.7 993.9 998.1 1006.2 1013.4 1017.4 1016.0 1008.2 MAX. QFF PRESSURE IN HPA 1028.5 1033.3 1020.4 1014.6 1009.9 1004.9 997.9 1004.0 1016.6 1017.8 1023.7 1027.2 1033.3 DAY 12 15 12 1 25 24 26 31 27 27 27 17 MIN. QFF PRESSURE IN HPA 1002.7 1004.7 999.2 1001.8 996.0 989.6 988.6 989.4 998.4 1009.0 1009.0 1006.7 988.6 DAY 25 28 6 10 10 11 14 11 8 3 5 25 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ANAR (40839) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 30 53 N LONGITUDE 55 15 E DATA PROCESSING CENTER ELEVATION 1408.8 M MEANS AND EXTREMES FOR THE YEAR 1992 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AIR TEMPERATURE (C) 4.1 7.9 9.8 16.7 21.3 29.0 29.6 27.3 22.1 17.1 13.4 8.4 17.2 MINIMUN AIR TEMPERATURE (C) -1.7 -0.0 1.9 9.3 13.5 19.3 18.8 17.8 11.7 7.4 5.0 2.3 8.8 DAYS WITH MINIMUM TEMP. >=21 0 0 0 0 0 8 5 5 0 0 0 0 18 DAYS WITH MINIMUM TEMP. <=-4 13 6 5 0 0 0 0 0 0 0 1 0 25 DAYS WITH FREEZING MIN.<= 0 21 17 14 0 0 0 0 0 0 0 5 13 70 TEMPERATURE RECORDS LOWEST(C) -12.0 -10.2 -7.0 0.6 7.6 16.2 16.2 12.4 7.0 4.6 -4.4 -3.0 -12.0 DAY 6 17 13 9 13 12 17 18 11 20 28 6 MAXIMUM AIR TEMPERATURE (C) 10.6 16.3 17.3 24.1 29.1 36.8 37.8 35.3 31.2 26.8 22.1 15.2 25.2 DAYS WITH MAXIMUM TEMP. >=30 0 0 0 2 13 30 31 29 17 4 0 0 126 DAYS WITH MAXIMUM TEMP. <= 0 1 0 0 0 0 0 0 0 0 0 0 0 1 TEMPERATURE RECORDS HIGHEST(C) 17.8 23.2 24.2 30.4 34.6 41.0 40.2 39.2 35.2 31.0 25.4 20.4 41.0 DAY 3 24 15 22 20 25 5 6 25 3 1 3 DIF. BETWEEN (MAX.-MIN.) (C) 12.3 16.3 15.4 14.8 15.6 17.5 19.0 17.5 19.5 19.4 17.1 12.9 16.4 MEAN DAILY TEMP. (MDT) (C) 4.4 8.1 9.6 16.7 21.3 28.1 28.3 26.6 21.4 17.1 13.6 8.7 17.0 COOLING DEG. DAYS(BASE 21 0C) 0.0 0.0 0.0 6.6 49.1 211.9 226.2 172.1 33.7 0.0 0.0 0.0 699.6 HEATING DEG. DAYS(BASE 18 0C) 420.4 286.6 261.1 76.2 8.3 0.0 0.0 0.0 0.3 40.2 133.2 286.9 1513.2 DEWPOINT (MEAN C) -5.6 -8.5 -5.8 -0.6 3.3 1.5 0.3 1.1 -3.2 -4.6 -6.2 -1.4 -2.5 MIXING RATIO (G/KG) 3.16 2.68 3.26 4.55 5.90 5.27 4.95 5.07 3.72 3.25 2.97 4.28 4.09 VAPOUR PRESSURE (HPA) 4.34 3.68 4.47 6.22 8.05 7.17 6.71 6.91 5.11 4.48 4.10 5.87 5.59 SATURATION DEF. (HPA) 4.60 7.88 8.53 14.27 18.91 35.01 37.27 31.75 23.44 16.60 12.32 5.76 18.03 RELATIVE HUMIDITY (MEAN %) 54 35 38 37 35 20 17 20 20 25 28 56 32 RELATIVE HUMIDITY (MAX. %) 76 60 63 61 56 34 31 33 32 40 44 78 51 RELATIVE HUMIDITY (MIN. %) 34 15 19 18 17 10 8 11 11 13 16 33 17 RELATIVE HUMIDITY (MEAN% 03UTC) 67 52 54 53 51 30 27 31 30 40 42 70 46 RELATIVE HUMIDITY (MEAN% 09UTC) 43 24 24 23 24 16 10 13 12 15 19 42 22 RELATIVE HUMIDITY (MEAN% 15UTC) 46 25 28 28 25 12 14 15 15 19 23 49 25 RH=0 => RELATIVE HUMIDITY < 0.5% AMOUNT OF PRECIPITATION MM. 15.0 3.0 3.8 12.0 14.6 0.0 0.0 0.0 0.0 0.0 0.0 35.0 83.4 DAYS WITH PRECIPITATION >=10 0 0 0 0 0 0 0 0 0 0 0 1 1 DAYS WITH PRECIPITATION >= 5 1 0 0 0 1 0 0 0 0 0 0 2 4 DAYS WITH PRECIPITATION >= 1 5 1 2 5 5 0 0 0 0 0 0 7 25 DAYS WITH PRECIPITATION 5 1 3 7 8 0 0 0 0 0 0 8 32 GREATEST DAILY PRECIPITATION 5.0 3.0 2.0 4.6 8.0 0.0 0.0 0.0 0.0 0.0 0.0 15.8 15.8 DAY 21 18 20 8 12 ** ** ** ** ** ** 21 DAY WITH THUNDER STORM 0 0 0 1 4 1 0 0 0 0 0 0 6 DAYS WITH SNOW OR SLEET 4 0 0 0 0 0 0 0 0 0 0 1 5 DAYS WITH DUST 5 4 7 5 7 5 1 1 0 0 2 0 37 WIND DIRECTION (PREVAILING) 225 225 225 225 270 270 360 360 360 225 225 225 225 PREVAILING WIND SPEED(KNOTS) 11.1 9.9 11.0 9.7 9.2 7.7 8.0 8.8 7.9 5.2 7.8 10.7 8.9 PREVAILING WIND PERCENT 23.4 17.2 16.5 16.3 15.3 13.8 18.1 23.0 14.6 10.5 11.7 16.1 13.7 CALMS PERCENT OF WIND 44.8 44.4 47.2 41.7 38.7 37.9 48.8 39.5 49.6 69.6 62.9 54.4 48.3 NO. OF WIND OBSERVATION 248 232 248 240 248 240 248 248 240 247 240 248 2927 VECTOR WIND DIRECTION (MEAN) 210 230 242 243 255 285 358 356 326 286 227 204 253 VECTOR WIND MAGNITUDE(KNOTS) 3.6 3.6 3.2 3.1 2.4 1.9 2.2 2.8 2.0 0.5 1.6 3.1 1.6 WIND STEADINESES (MEAN %) 67.9 69.2 59.3 58.5 43.6 40.4 61.1 59.6 58.8 31.3 55.2 72.1 37.2 WIND SPEED (MEAN KNOTS) 5.3 5.2 5.4 5.3 5.5 4.7 3.6 4.7 3.4 1.6 2.9 4.3 4.3 FASTEST WIND DIRECTION 210 200 210 190 210 330 30 320 360 40 240 210 200 FASTEST WIND SPEED (KNOTS) 25 37 21 23 29 25 14 16 12 10 17 19 37 DAY 3 25 30 27 11 8 14 4 4 7 26 14 DAYS WITH SKY CLEAR (0-2)/8 17 23 14 11 17 25 30 25 30 31 19 13 255 DAYS WITH P.CLOUDY (3-6)/8 7 5 12 10 10 5 1 6 0 0 9 12 77 DAYS WITH CLOUDY (7-8)/8 7 1 5 9 4 0 0 0 0 0 2 6 34 DAYS WITH VISIBILITY =< 2 KM 6 2 1 0 1 1 0 0 0 0 0 0 11 DURATION OF SUNSHINE HOURS 174.8 242.0 235.5 234.4 281.2 319.6 349.1 333.0 319.1 297.2 233.6 169.4 3188.9 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ANAR (40839) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 30 53 N LONGITUDE 55 15 E DATA PROCESSING CENTER ELEVATION 1408.8 M MEANS AND EXTREMES FOR THE YEAR 1992 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL MEAN QFE PRESSURE IN HPA 859.6 857.3 857.8 857.3 858.1 853.7 852.8 855.4 859.3 861.0 863.0 860.6 858.0 MAX. QFE PRESSURE IN HPA 872.1 866.3 868.4 865.1 863.9 860.9 857.8 862.2 864.6 867.2 870.4 867.4 872.1 DAY-HOUR 10- 6 16- 6 13- 6 26- 9 14- 6 11- 6 16- 3 31- 6 1- 6 30- 6 4- 6 11- 6 MIN. QFE PRESSURE IN HPA 851.2 849.2 849.0 847.3 850.2 845.8 848.6 849.3 853.7 854.8 854.4 854.0 845.8 DAY-HOUR 25-12 11-12 22-12 18-15 4-15 27-15 18-15 28-15 17-15 7-12 26-12 19-12 MEAN QNH PRESSURE IN HPA 1018.2 1015.5 1016.1 1015.5 1016.5 1011.4 1010.3 1013.3 1017.8 1019.8 1022.0 1019.3 1016.3 MAX. QNH PRESSURE IN HPA 1032.5 1025.9 1028.3 1024.5 1023.1 1019.7 1016.1 1021.2 1023.9 1026.9 1030.6 1027.1 1032.5 DAY-HOUR 10- 6 16- 6 13- 6 26- 9 14- 6 11- 6 16- 3 31- 6 1- 6 30- 6 4- 6 11- 6 MIN. QNH PRESSURE IN HPA 1008.5 1006.2 1006.0 1004.1 1007.4 1002.3 1005.6 1006.4 1011.4 1012.7 1012.2 1011.8 1002.3 DAY-HOUR 25-12 11-12 22-12 18-15 4-15 27-15 18-15 28-15 17-15 7-12 26-12 19-12 MEAN QFF PRESSURE IN HPA 1019.2 1014.1 1013.6 1008.9 1007.2 998.1 996.6 1000.8 1008.3 1013.2 1017.6 1017.6 1009.6 MAX. QFF PRESSURE IN HPA 1038.6 1027.9 1031.0 1018.6 1016.1 1006.8 1003.7 1011.8 1016.1 1021.7 1026.9 1029.6 1038.6 DAY-HOUR 10- 6 16- 6 13- 6 9- 3 3- 6 11- 6 16- 3 31-18 2- 3 30- 3 4- 6 11- 6 MIN. QFF PRESSURE IN HPA 1004.1 1001.1 999.7 994.8 1000.1 987.0 991.1 992.7 1000.3 1004.7 1006.1 1007.0 987.0 DAY-HOUR 2-21 25-12 31- 3 18-12 4-12 27-15 3-15 29-12 17-21 6-12 26-12 4- 9 PRESSURE AT HOUR 0000 UTC. MEAN QFE PRESSURE IN HPA 859.5 857.3 857.6 857.1 858.2 853.9 852.8 855.3 859.2 861.0 862.8 860.6 857.9 MAX. QFE PRESSURE IN HPA 870.0 863.0 866.0 861.7 861.8 859.4 856.4 859.6 863.4 865.5 867.5 865.4 870.0 DAY 10 16 13 26 29 11 16 31 2 30 4 11 MIN. QFE PRESSURE IN HPA 852.6 852.0 850.7 851.0 854.8 847.3 849.9 850.6 855.0 856.5 857.5 856.2 847.3 DAY 31 11 31 18 9 27 19 2 18 6 26 4 MEAN QNH PRESSURE IN HPA 1018.0 1015.5 1015.9 1015.3 1016.5 1011.6 1010.4 1013.2 1017.7 1019.7 1021.9 1019.3 1016.3 MAX. QNH PRESSURE IN HPA 1030.1 1022.1 1025.5 1020.6 1020.7 1017.9 1014.5 1018.2 1022.5 1024.9 1027.2 1024.8 1030.1 DAY 10 16 13 26 29 11 16 31 2 30 4 11 MIN. QNH PRESSURE IN HPA 1010.1 1009.5 1008.0 1008.3 1012.7 1004.1 1007.0 1007.8 1012.9 1014.6 1015.8 1014.3 1004.1 DAY 31 11 31 18 9 27 19 2 18 6 26 4 MEAN QFF PRESSURE IN HPA 1018.5 1013.3 1013.4 1008.5 1007.3 998.4 997.1 1000.8 1008.1 1012.6 1016.8 1016.9 1009.3 MAX. QFF PRESSURE IN HPA 1035.2 1024.9 1028.8 1018.3 1013.8 1004.7 1002.6 1007.7 1014.9 1018.7 1023.5 1026.3 1035.2 DAY 10 17 13 9 3 11 16 31 2 30 19 11 MIN. QFF PRESSURE IN HPA 1006.5 1004.4 999.8 998.2 1001.6 989.0 994.3 994.7 1001.0 1006.5 1008.7 1008.0 989.0 DAY 31 25 31 18 21 27 19 29 18 6 26 4 PRESSURE AT HOUR 0300 UTC. MEAN QFE PRESSURE IN HPA 860.0 858.0 858.6 858.0 859.2 855.2 853.7 856.3 860.3 862.0 863.8 861.0 858.8 MAX. QFE PRESSURE IN HPA 870.4 865.0 867.0 862.9 863.0 860.7 857.8 861.6 864.1 866.3 869.0 866.1 870.4 DAY 10 16 13 26 14 11 16 31 2 30 4 11 MIN. QFE PRESSURE IN HPA 854.4 852.7 850.1 851.6 855.8 848.8 850.4 851.4 856.5 857.3 857.8 855.8 848.8 DAY 1 11 31 18 7 27 19 2 18 6 26 4 MEAN QNH PRESSURE IN HPA 1018.7 1016.4 1017.0 1016.4 1017.7 1013.2 1011.5 1014.4 1018.9 1020.9 1023.0 1019.8 1017.3 MAX. QNH PRESSURE IN HPA 1030.6 1024.4 1026.7 1022.0 1022.1 1019.4 1016.1 1020.5 1023.3 1025.9 1029.0 1025.6 1030.6 DAY 10 16 13 26 14 11 16 31 2 30 4 11 MIN. QNH PRESSURE IN HPA 1012.2 1010.3 1007.3 1009.0 1013.8 1005.8 1007.6 1008.8 1014.6 1015.5 1016.1 1013.8 1005.8 DAY 1 11 31 18 7 27 19 2 18 6 26 4 MEAN QFF PRESSURE IN HPA 1020.4 1015.9 1015.0 1010.5 1008.9 1000.2 998.3 1002.5 1010.6 1015.5 1019.7 1018.8 1011.4 MAX. QFF PRESSURE IN HPA 1036.6 1025.7 1029.5 1018.6 1014.6 1006.3 1003.7 1010.6 1016.1 1021.7 1026.5 1028.3 1036.6 DAY 10 17 12 9 3 7 16 31 2 30 18 11 MIN. QFF PRESSURE IN HPA 1007.8 1006.8 999.7 999.7 1004.0 990.2 995.2 996.1 1004.7 1009.5 1010.7 1009.0 990.2 DAY 1 25 31 18 7 27 19 29 18 6 26 4 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ANAR (40839) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 30 53 N LONGITUDE 55 15 E DATA PROCESSING CENTER ELEVATION 1408.8 M MEANS AND EXTREMES FOR THE YEAR 1992 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 0600 UTC. MEAN QFE PRESSURE IN HPA 861.1 859.0 859.7 858.8 859.6 855.6 854.2 857.0 861.1 863.1 864.9 862.2 859.7 MAX. QFE PRESSURE IN HPA 872.1 866.3 868.4 864.5 863.9 860.9 857.8 862.2 864.6 867.2 870.4 867.4 872.1 DAY 10 16 13 26 14 11 16 31 1 30 4 11 MIN. QFE PRESSURE IN HPA 855.4 853.6 851.4 851.5 855.8 848.8 850.7 852.4 857.7 858.1 857.7 856.4 848.8 DAY 25 11 31 18 7 27 19 1 18 6 26 4 MEAN QNH PRESSURE IN HPA 1019.9 1017.5 1018.2 1017.2 1018.1 1013.6 1012.0 1015.2 1019.9 1022.2 1024.2 1021.1 1018.3 MAX. QNH PRESSURE IN HPA 1032.5 1025.9 1028.3 1023.8 1023.1 1019.7 1016.1 1021.2 1023.9 1026.9 1030.6 1027.1 1032.5 DAY 10 16 13 26 14 11 16 31 1 30 4 11 MIN. QNH PRESSURE IN HPA 1013.4 1011.3 1008.8 1008.9 1013.8 1005.8 1008.0 1009.9 1016.0 1016.5 1016.0 1014.5 1005.8 DAY 25 11 31 18 7 27 19 1 18 6 26 4 MEAN QFF PRESSURE IN HPA 1021.3 1016.6 1015.9 1010.7 1008.7 1000.1 997.7 1002.3 1010.1 1015.5 1020.1 1019.8 1011.6 MAX. QFF PRESSURE IN HPA 1038.6 1027.9 1031.0 1018.1 1016.1 1006.8 1002.6 1011.1 1015.3 1020.7 1026.9 1029.6 1038.6 DAY 10 16 13 8 3 11 16 31 1 30 4 11 MIN. QFF PRESSURE IN HPA 1008.6 1005.7 1001.6 999.3 1003.4 990.3 994.1 995.8 1005.2 1008.4 1009.8 1008.9 990.3 DAY 3 25 31 18 7 27 19 29 18 6 26 4 PRESSURE AT HOUR 0900 UTC. MEAN QFE PRESSURE IN HPA 859.6 857.4 858.2 857.4 858.4 854.3 853.2 855.7 859.6 861.3 863.0 860.5 858.2 MAX. QFE PRESSURE IN HPA 870.2 864.9 867.0 865.1 862.8 859.7 857.0 862.0 863.1 865.6 868.6 866.4 870.2 DAY 10 16 12 26 14 11 16 31 1 30 4 11 MIN. QFE PRESSURE IN HPA 852.4 851.0 850.9 849.5 853.2 847.8 850.0 851.2 856.5 856.8 855.5 855.0 847.8 DAY 25 25 31 18 4 27 19 29 17 6 26 4 MEAN QNH PRESSURE IN HPA 1018.2 1015.6 1016.6 1015.7 1016.7 1012.1 1010.8 1013.7 1018.2 1020.1 1022.0 1019.2 1016.6 MAX. QNH PRESSURE IN HPA 1030.3 1024.3 1026.7 1024.5 1021.8 1018.3 1015.2 1020.9 1022.2 1025.1 1028.5 1026.0 1030.3 DAY 10 16 12 26 14 11 16 31 1 30 4 11 MIN. QNH PRESSURE IN HPA 1009.9 1008.3 1008.2 1006.6 1010.8 1004.6 1007.2 1008.5 1014.6 1015.0 1013.5 1012.9 1004.6 DAY 25 25 31 18 4 27 19 29 17 6 26 4 MEAN QFF PRESSURE IN HPA 1018.6 1013.6 1013.7 1008.7 1007.2 998.4 996.7 1000.8 1008.1 1012.6 1016.8 1016.9 1009.3 MAX. QFF PRESSURE IN HPA 1034.7 1026.0 1029.8 1017.9 1014.4 1006.2 1002.4 1010.8 1013.1 1018.7 1024.1 1026.7 1034.7 DAY 10 16 12 26 14 11 16 31 1 30 4 11 MIN. QFF PRESSURE IN HPA 1006.1 1001.2 1001.8 996.5 1003.0 989.3 993.3 994.2 1002.8 1006.4 1006.7 1007.0 989.3 DAY 3 25 31 18 7 27 10 29 18 6 26 4 PRESSURE AT HOUR 1200 UTC. MEAN QFE PRESSURE IN HPA 858.3 855.5 856.0 855.7 856.7 852.3 851.5 854.0 857.8 859.5 861.5 859.1 856.5 MAX. QFE PRESSURE IN HPA 868.4 863.6 865.9 861.9 861.6 857.5 854.8 860.4 861.4 863.7 866.8 864.6 868.4 DAY 10 16 12 26 28 11 15 31 1 29 4 11 MIN. QFE PRESSURE IN HPA 851.2 849.2 849.0 847.6 850.6 846.2 848.7 849.5 854.2 854.8 854.4 854.0 846.2 DAY 25 11 22 18 4 27 19 29 17 7 26 19 MEAN QNH PRESSURE IN HPA 1016.7 1013.5 1014.1 1013.7 1014.8 1009.9 1008.9 1011.8 1016.1 1018.1 1020.3 1017.6 1014.6 MAX. QNH PRESSURE IN HPA 1028.3 1022.8 1025.4 1020.8 1020.5 1015.8 1012.7 1019.1 1020.2 1022.9 1026.4 1023.9 1028.3 DAY 10 16 12 26 28 11 15 31 1 29 4 11 MIN. QNH PRESSURE IN HPA 1008.5 1006.2 1006.0 1004.4 1007.8 1002.8 1005.7 1006.6 1012.0 1012.7 1012.2 1011.8 1002.8 DAY 25 11 22 18 4 27 19 29 17 7 26 19 MEAN QFF PRESSURE IN HPA 1017.1 1011.3 1011.3 1006.8 1005.6 996.6 995.6 999.4 1006.5 1010.9 1015.3 1015.3 1007.6 MAX. QFF PRESSURE IN HPA 1032.0 1023.8 1028.0 1017.5 1012.2 1003.1 1000.8 1009.5 1011.4 1016.8 1022.3 1024.0 1032.0 DAY 10 16 12 8 28 11 16 31 2 29 4 11 MIN. QFF PRESSURE IN HPA 1008.3 1001.1 999.8 994.8 1000.1 987.8 992.8 992.7 1001.0 1004.7 1006.1 1007.9 987.8 DAY 3 25 31 18 4 27 19 29 18 6 26 19 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ANAR (40839) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 30 53 N LONGITUDE 55 15 E DATA PROCESSING CENTER ELEVATION 1408.8 M MEANS AND EXTREMES FOR THE YEAR 1992 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 1500 UTC. MEAN QFE PRESSURE IN HPA 859.0 856.2 856.6 856.1 856.9 852.0 851.4 853.8 858.0 859.8 862.0 860.0 856.8 MAX. QFE PRESSURE IN HPA 868.7 863.8 866.0 862.1 861.6 856.9 854.8 860.4 861.6 864.1 867.2 864.6 868.7 DAY 10 16 12 26 28 11 15 31 1 29 4 11 MIN. QFE PRESSURE IN HPA 852.0 850.7 850.4 847.3 850.2 845.8 848.6 849.3 853.7 854.9 855.9 854.4 845.8 DAY 30 11 22 18 4 27 18 28 17 6 26 19 MEAN QNH PRESSURE IN HPA 1017.5 1014.3 1014.7 1014.2 1015.0 1009.4 1008.8 1011.6 1016.3 1018.4 1021.0 1018.7 1015.0 MAX. QNH PRESSURE IN HPA 1028.6 1023.0 1025.5 1021.0 1020.5 1015.1 1012.7 1019.1 1020.5 1023.3 1026.9 1023.9 1028.6 DAY 10 16 12 26 28 11 15 31 1 29 4 11 MIN. QNH PRESSURE IN HPA 1009.5 1008.0 1007.6 1004.1 1007.4 1002.3 1005.6 1006.4 1011.4 1012.8 1013.9 1012.2 1002.3 DAY 30 11 22 18 4 27 18 28 17 6 26 19 MEAN QFF PRESSURE IN HPA 1019.1 1013.7 1012.5 1008.2 1006.2 996.4 995.5 999.8 1007.8 1012.9 1017.7 1017.6 1009.0 MAX. QFF PRESSURE IN HPA 1033.9 1025.6 1024.2 1016.7 1011.7 1003.4 1000.3 1010.0 1012.8 1019.2 1024.4 1025.5 1033.9 DAY 10 16 13 8 28 9 16 31 2 29 18 11 MIN. QFF PRESSURE IN HPA 1007.7 1005.9 1001.3 995.2 1000.1 987.0 991.1 993.4 1002.8 1006.3 1009.0 1009.5 987.0 DAY 2 25 31 18 4 27 3 10 17 6 26 19 PRESSURE AT HOUR 1800 UTC. MEAN QFE PRESSURE IN HPA 859.8 857.3 857.9 857.5 858.1 853.2 852.5 855.4 859.1 860.9 862.9 860.9 858.0 MAX. QFE PRESSURE IN HPA 869.3 864.2 866.8 862.1 862.2 857.8 856.6 861.7 863.1 865.2 867.6 865.6 869.3 DAY 9 16 12 25 28 6 15 31 1 29 4 11 MIN. QFE PRESSURE IN HPA 852.2 853.0 851.0 849.5 852.4 846.8 849.3 850.5 854.5 856.3 858.1 855.8 846.8 DAY 30 11 30 18 4 27 18 28 17 6 26 19 MEAN QNH PRESSURE IN HPA 1018.4 1015.6 1016.2 1015.8 1016.5 1010.8 1010.0 1013.3 1017.6 1019.7 1022.0 1019.6 1016.3 MAX. QNH PRESSURE IN HPA 1029.3 1023.5 1026.4 1021.0 1021.2 1016.1 1014.7 1020.6 1022.2 1024.6 1027.4 1025.1 1029.3 DAY 9 16 12 25 28 6 15 31 1 29 4 11 MIN. QNH PRESSURE IN HPA 1009.7 1010.6 1008.3 1006.6 1009.9 1003.5 1006.4 1007.7 1012.3 1014.4 1016.5 1013.8 1003.5 DAY 30 11 30 18 4 27 18 28 17 6 26 19 MEAN QFF PRESSURE IN HPA 1019.7 1014.6 1013.7 1009.1 1006.9 997.4 995.8 1000.5 1007.9 1013.0 1017.8 1018.3 1009.6 MAX. QFF PRESSURE IN HPA 1034.7 1027.2 1029.7 1018.4 1013.5 1004.4 1000.8 1011.8 1013.9 1018.6 1025.0 1026.4 1034.7 DAY 10 16 12 8 2 9 15 31 1 31 18 10 MIN. QFF PRESSURE IN HPA 1005.7 1006.9 1001.2 998.0 1001.0 988.2 992.4 993.1 1002.6 1006.3 1011.3 1010.5 988.2 DAY 2 25 30 18 31 27 18 28 17 5 15 19 PRESSURE AT HOUR 2100 UTC. MEAN QFE PRESSURE IN HPA 859.7 857.5 858.0 857.6 858.3 853.5 852.8 855.6 859.1 861.0 863.0 860.7 858.1 MAX. QFE PRESSURE IN HPA 870.0 863.9 866.5 863.4 862.2 858.3 856.8 861.7 863.1 865.6 867.5 865.6 870.0 DAY 9 16 12 25 28 10 15 31 1 29 3 11 MIN. QFE PRESSURE IN HPA 851.6 853.9 851.5 851.4 854.0 847.1 849.9 850.8 854.5 856.5 858.2 855.6 847.1 DAY 30 17 30 18 4 26 18 28 17 6 25 19 MEAN QNH PRESSURE IN HPA 1018.3 1015.8 1016.3 1015.9 1016.7 1011.1 1010.4 1013.6 1017.6 1019.7 1022.0 1019.4 1016.4 MAX. QNH PRESSURE IN HPA 1030.1 1023.1 1026.1 1022.5 1021.2 1016.7 1015.0 1020.6 1022.2 1025.1 1027.2 1025.1 1030.1 DAY 9 16 12 25 28 10 15 31 1 29 3 11 MIN. QNH PRESSURE IN HPA 1009.0 1011.6 1008.9 1008.8 1011.8 1003.8 1007.0 1008.1 1012.3 1014.6 1016.6 1013.6 1003.8 DAY 30 17 30 18 4 26 18 28 17 6 25 19 MEAN QFF PRESSURE IN HPA 1018.8 1013.8 1013.2 1008.7 1007.1 997.4 996.4 1000.7 1007.5 1012.3 1016.8 1017.2 1009.2 MAX. QFF PRESSURE IN HPA 1034.9 1026.8 1029.3 1018.5 1013.2 1003.7 1001.7 1011.7 1013.5 1018.6 1023.3 1026.3 1034.9 DAY 9 16 12 8 2 10 15 31 1 29 18 10 MIN. QFF PRESSURE IN HPA 1004.1 1006.6 1001.3 999.1 1001.6 988.2 993.2 993.7 1000.3 1006.4 1009.3 1008.5 988.2 DAY 2 25 30 17 31 26 18 28 17 5 25 19 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ANAR (40839) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 30 53 N LONGITUDE 55 15 E DATA PROCESSING CENTER ELEVATION 1408.8 M MEANS AND EXTREMES FOR THE YEAR 1993 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AIR TEMPERATURE (C) 4.6 9.5 11.4 19.0 23.9 28.8 29.3 27.9 23.8 16.5 12.6 7.4 17.9 MINIMUN AIR TEMPERATURE (C) -0.6 3.8 5.5 11.0 14.9 18.7 19.4 17.8 13.3 7.9 4.8 -1.4 9.6 DAYS WITH MINIMUM TEMP. >=21 0 0 0 0 0 9 8 4 0 0 0 0 21 DAYS WITH MINIMUM TEMP. <=-4 5 1 0 0 0 0 0 0 0 0 0 5 11 DAYS WITH FREEZING MIN.<= 0 20 8 7 0 0 0 0 0 0 0 9 24 68 TEMPERATURE RECORDS LOWEST(C) -8.4 -4.4 -3.4 3.4 9.0 14.0 15.0 13.0 9.0 2.0 -3.4 -6.0 -8.4 DAY 16 10 24 1 9 1 1 3 20 9 18 7 MAXIMUM AIR TEMPERATURE (C) 10.3 15.8 18.0 25.9 31.6 36.9 37.0 36.3 33.3 25.3 21.5 17.7 25.8 DAYS WITH MAXIMUM TEMP. >=30 0 0 0 3 22 30 31 31 30 4 0 0 151 DAYS WITH MAXIMUM TEMP. <= 0 0 0 0 0 0 0 0 0 0 0 0 0 0 TEMPERATURE RECORDS HIGHEST(C) 19.4 21.4 25.2 31.0 38.6 41.8 40.8 39.6 36.0 33.8 27.6 23.4 41.8 DAY 28 28 19 20 27 21 14 13 14 1 1 2 DIF. BETWEEN (MAX.-MIN.) (C) 10.9 12.0 12.5 14.9 16.7 18.2 17.6 18.5 20.0 17.4 16.7 19.1 16.2 MEAN DAILY TEMP. (MDT) (C) 4.8 9.8 11.8 18.4 23.2 27.8 28.2 27.1 23.3 16.6 13.2 8.2 17.7 COOLING DEG. DAYS(BASE 21 0C) 0.0 0.0 0.0 7.8 83.1 204.3 223.3 188.6 70.4 6.8 0.0 0.0 784.3 HEATING DEG. DAYS(BASE 18 0C) 408.4 230.2 193.4 22.8 1.8 0.0 0.0 0.0 0.0 64.8 153.3 305.0 1379.7 DEWPOINT (MEAN C) -2.7 0.4 -1.5 0.3 2.1 2.9 3.5 0.1 -4.4 -5.8 -3.8 -7.6 -1.4 MIXING RATIO (G/KG) 3.83 4.87 4.35 4.97 5.39 5.87 6.03 4.73 3.40 3.08 3.66 2.58 4.40 VAPOUR PRESSURE (HPA) 5.27 6.68 5.96 6.80 7.36 7.98 8.18 6.46 4.66 4.25 5.04 3.57 6.02 SATURATION DEF. (HPA) 3.81 5.87 8.34 16.23 24.09 33.78 34.80 33.39 27.14 16.00 11.02 7.65 18.51 RELATIVE HUMIDITY (MEAN %) 65 57 45 33 27 21 21 19 18 24 35 38 34 RELATIVE HUMIDITY (MAX. %) 83 78 69 53 45 34 37 33 30 39 56 59 51 RELATIVE HUMIDITY (MIN. %) 45 36 26 18 14 12 12 10 7 12 19 18 19 RELATIVE HUMIDITY (MEAN% 03UTC) 77 71 60 51 42 31 33 30 29 38 48 55 47 RELATIVE HUMIDITY (MEAN% 09UTC) 52 42 34 22 17 14 14 12 10 14 24 26 23 RELATIVE HUMIDITY (MEAN% 15UTC) 60 48 37 23 18 16 15 12 12 18 28 28 26 RH=0 => RELATIVE HUMIDITY < 0.5% AMOUNT OF PRECIPITATION MM. 28.2 32.2 25.5 3.0 4.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 92.9 DAYS WITH PRECIPITATION >=10 0 1 0 0 0 0 0 0 0 0 0 0 1 DAYS WITH PRECIPITATION >= 5 3 1 2 0 0 0 0 0 0 0 0 0 6 DAYS WITH PRECIPITATION >= 1 7 2 7 1 2 0 0 0 0 0 0 0 19 DAYS WITH PRECIPITATION 10 2 7 1 2 0 0 0 0 0 0 0 22 GREATEST DAILY PRECIPITATION 6.2 30.2 8.0 3.0 2.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 30.2 DAY 3 4 12 28 3 ** ** ** ** ** ** ** DAY WITH THUNDER STORM 0 0 0 0 2 0 0 0 0 0 0 0 2 DAYS WITH SNOW OR SLEET 4 0 1 0 0 0 0 0 0 0 0 0 5 DAYS WITH DUST 0 1 5 0 1 1 1 0 0 0 3 0 12 WIND DIRECTION (PREVAILING) 225 225 225 225 225 360 360 360 360 225 225 225 225 PREVAILING WIND SPEED(KNOTS) 10.0 11.3 11.5 9.1 9.2 7.1 8.1 7.6 6.2 5.2 8.4 6.7 8.7 PREVAILING WIND PERCENT 10.9 17.9 22.6 20.8 14.1 12.5 27.0 21.8 13.8 12.5 14.6 5.6 12.1 CALMS PERCENT OF WIND 60.1 41.1 41.1 37.9 40.7 47.9 46.0 53.6 61.7 56.0 54.6 78.2 51.7 NO. OF WIND OBSERVATION 248 224 248 240 248 240 248 248 240 248 240 248 2920 VECTOR WIND DIRECTION (MEAN) 242 219 229 231 279 319 3 3 356 300 219 311 264 VECTOR WIND MAGNITUDE(KNOTS) 1.5 3.5 3.7 3.0 2.1 1.6 2.9 2.1 0.8 0.6 2.0 0.3 1.1 WIND STEADINESES (MEAN %) 45.5 62.5 58.7 58.8 46.7 44.4 72.5 67.7 34.8 23.1 51.3 21.4 28.9 WIND SPEED (MEAN KNOTS) 3.3 5.6 6.3 5.1 4.5 3.6 4.0 3.1 2.3 2.6 3.9 1.4 3.8 FASTEST WIND DIRECTION 260 340 270 190 210 350 360 20 360 190 210 210 340 FASTEST WIND SPEED (KNOTS) 21 27 23 23 19 17 16 14 14 14 19 16 27 DAY 9 23 4 26 6 30 16 24 23 28 10 5 DAYS WITH SKY CLEAR (0-2)/8 13 14 14 7 16 29 31 29 28 24 17 21 243 DAYS WITH P.CLOUDY (3-6)/8 5 6 10 18 13 1 0 2 2 6 10 6 79 DAYS WITH CLOUDY (7-8)/8 13 8 7 5 2 0 0 0 0 1 3 4 43 DAYS WITH VISIBILITY =< 2 KM 4 1 1 0 0 0 0 0 0 0 0 0 6 DURATION OF SUNSHINE HOURS 154.3 180.1 210.1 230.1 295.5 362.7 358.9 360.2 323.5 292.3 220.2 238.8 3226.7 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ANAR (40839) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 30 53 N LONGITUDE 55 15 E DATA PROCESSING CENTER ELEVATION 1408.8 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 860.5 859.9 859.0 857.9 857.6 854.3 853.4 855.7 857.9 863.9 862.0 863.1 858.8 MAX. QFE PRESSURE IN HPA 868.4 865.9 866.4 866.0 862.4 863.0 859.4 860.4 863.6 870.3 868.2 870.7 870.7 DAY-HOUR 6- 6 8- 6 31- 6 1- 6 9- 6 23- 6 28- 6 25- 6 23- 6 17- 6 21- 6 27- 6 MIN. QFE PRESSURE IN HPA 851.0 852.8 848.2 850.6 850.0 849.6 846.8 848.5 853.1 856.4 854.9 854.8 846.8 DAY-HOUR 8-12 23-12 12-12 13-15 29-12 13-15 13-15 12-15 3-12 3-12 14- 9 4-15 MEAN QNH PRESSURE IN HPA 1019.2 1018.5 1017.5 1016.3 1015.9 1012.1 1011.1 1013.8 1016.3 1023.1 1020.9 1022.2 1017.2 MAX. QNH PRESSURE IN HPA 1028.3 1025.4 1026.0 1025.5 1021.4 1022.1 1017.9 1019.1 1022.8 1030.4 1028.0 1030.9 1030.9 DAY-HOUR 6- 6 8- 6 31- 6 1- 6 9- 6 23- 6 28- 6 25- 6 23- 6 17- 6 21- 6 27- 6 MIN. QNH PRESSURE IN HPA 1008.3 1010.4 1005.1 1007.8 1007.2 1006.7 1003.5 1005.4 1010.7 1014.5 1012.8 1012.7 1003.5 DAY-HOUR 8-12 23-12 12-12 13-15 29-12 13-15 13-15 12-15 3-12 3-12 14- 9 4-15 MEAN QFF PRESSURE IN HPA 1019.9 1016.1 1014.0 1008.4 1005.3 998.8 997.5 1001.1 1005.9 1016.8 1016.8 1021.3 1010.1 MAX. QFF PRESSURE IN HPA 1029.8 1027.1 1023.4 1021.8 1013.2 1010.5 1005.1 1008.4 1013.3 1026.3 1028.1 1031.5 1031.5 DAY-HOUR 6-18 8- 3 23- 6 1- 6 10- 3 23- 6 28- 6 26- 3 23- 3 9- 3 30- 6 27- 6 MIN. QFF PRESSURE IN HPA 1004.0 1006.0 1001.3 1000.6 994.4 992.1 988.4 991.5 999.3 1003.8 1004.5 1009.1 988.4 DAY-HOUR 9- 0 23-12 12-12 13-12 29-12 13-15 13-21 12-12 3-12 2-12 14-12 4-21 PRESSURE AT HOUR 0000 UTC. MEAN QFE PRESSURE IN HPA 860.4 859.7 858.6 858.0 857.7 854.1 853.4 855.5 857.8 863.6 862.0 863.1 858.7 MAX. QFE PRESSURE IN HPA 866.4 864.4 863.6 863.7 860.9 861.0 857.8 858.8 861.4 867.8 866.4 868.8 868.8 DAY 6 8 31 1 10 23 28 31 24 17 22 27 MIN. QFE PRESSURE IN HPA 851.2 853.2 852.0 852.5 854.4 850.4 848.1 850.0 854.8 857.7 856.2 857.4 848.1 DAY 9 5 22 13 29 4 14 12 4 3 14 5 MEAN QNH PRESSURE IN HPA 1019.1 1018.2 1017.1 1016.3 1016.0 1011.9 1011.1 1013.5 1016.1 1022.8 1020.9 1022.2 1017.1 MAX. QNH PRESSURE IN HPA 1026.0 1023.7 1022.8 1022.9 1019.7 1019.8 1016.1 1017.3 1020.2 1027.6 1026.0 1028.7 1028.7 DAY 6 8 31 1 10 23 28 31 24 17 22 27 MIN. QNH PRESSURE IN HPA 1008.5 1010.8 1009.5 1010.0 1012.2 1007.6 1005.0 1007.2 1012.7 1016.0 1014.3 1015.7 1005.0 DAY 9 5 22 13 29 4 14 12 4 3 14 5 MEAN QFF PRESSURE IN HPA 1019.3 1015.5 1013.0 1008.3 1005.4 998.9 997.7 1000.9 1005.3 1016.1 1016.0 1020.4 1009.7 MAX. QFF PRESSURE IN HPA 1026.8 1025.2 1021.4 1018.6 1011.7 1008.3 1003.5 1005.9 1010.0 1023.9 1024.9 1027.7 1027.7 DAY 6 8 24 1 10 23 28 26 23 9 22 27 MIN. QFF PRESSURE IN HPA 1004.0 1007.2 1004.9 1002.0 999.2 993.2 989.5 992.9 1000.9 1005.2 1005.6 1012.8 989.5 DAY 9 15 22 13 29 19 14 12 4 3 14 3 PRESSURE AT HOUR 0300 UTC. MEAN QFE PRESSURE IN HPA 860.8 860.2 859.5 858.9 858.9 855.5 854.4 856.7 858.8 864.7 862.8 863.8 859.6 MAX. QFE PRESSURE IN HPA 867.0 865.2 864.6 864.7 861.6 862.4 858.4 860.2 862.2 869.2 867.3 869.4 869.4 DAY 6 8 31 1 10 23 27 26 23 17 21 27 MIN. QFE PRESSURE IN HPA 851.6 853.9 853.0 853.0 855.2 852.3 849.3 851.2 855.6 859.0 855.8 858.5 849.3 DAY 9 5 22 13 29 3 14 12 29 3 14 5 MEAN QNH PRESSURE IN HPA 1019.5 1018.9 1018.0 1017.4 1017.3 1013.5 1012.2 1014.9 1017.3 1024.0 1021.8 1023.0 1018.2 MAX. QNH PRESSURE IN HPA 1026.7 1024.6 1023.9 1024.0 1020.5 1021.4 1016.8 1018.9 1021.2 1029.2 1027.0 1029.4 1029.4 DAY 6 8 31 1 10 23 27 26 23 17 21 27 MIN. QNH PRESSURE IN HPA 1009.0 1011.6 1010.6 1010.6 1013.1 1009.8 1006.4 1008.5 1013.6 1017.5 1013.8 1016.9 1006.4 DAY 9 5 22 13 29 3 14 12 29 3 14 5 MEAN QFF PRESSURE IN HPA 1020.8 1017.1 1015.2 1010.2 1007.1 1000.5 999.0 1002.9 1007.9 1018.9 1018.7 1023.4 1011.8 MAX. QFF PRESSURE IN HPA 1028.1 1027.1 1022.7 1020.7 1013.2 1010.1 1004.1 1008.4 1013.3 1026.3 1026.9 1030.2 1030.2 DAY 6 8 24 1 10 23 29 26 23 9 22 7 MIN. QFF PRESSURE IN HPA 1004.2 1007.9 1006.9 1003.1 1000.6 996.2 990.9 995.2 1003.3 1009.2 1006.5 1015.6 990.9 DAY 9 3 22 13 29 12 14 12 4 3 14 5 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ANAR (40839) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 30 53 N LONGITUDE 55 15 E DATA PROCESSING CENTER ELEVATION 1408.8 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 862.0 861.5 860.7 859.7 859.4 856.1 854.9 857.5 859.8 865.9 863.7 865.0 860.5 MAX. QFE PRESSURE IN HPA 868.4 865.9 866.4 866.0 862.4 863.0 859.4 860.4 863.6 870.3 868.2 870.7 870.7 DAY 6 8 31 1 9 23 28 25 23 17 21 27 MIN. QFE PRESSURE IN HPA 853.8 855.6 853.7 853.9 854.8 853.0 850.2 852.1 856.4 860.1 856.7 860.0 850.2 DAY 9 3 12 13 29 3 14 12 29 3 14 5 MEAN QNH PRESSURE IN HPA 1020.9 1020.4 1019.4 1018.3 1018.0 1014.1 1012.8 1015.7 1018.4 1025.4 1022.9 1024.4 1019.2 MAX. QNH PRESSURE IN HPA 1028.3 1025.4 1026.0 1025.5 1021.4 1022.1 1017.9 1019.1 1022.8 1030.4 1028.0 1030.9 1030.9 DAY 6 8 31 1 9 23 28 25 23 17 21 27 MIN. QNH PRESSURE IN HPA 1011.5 1013.6 1011.4 1011.6 1012.7 1010.6 1007.4 1009.6 1014.5 1018.7 1014.8 1018.6 1007.4 DAY 9 3 12 13 29 3 14 12 29 3 14 5 MEAN QFF PRESSURE IN HPA 1022.1 1018.2 1016.0 1010.3 1007.2 1000.7 998.9 1002.6 1007.8 1019.2 1019.0 1024.2 1012.2 MAX. QFF PRESSURE IN HPA 1029.8 1026.8 1023.4 1021.8 1013.2 1010.5 1005.1 1007.1 1013.1 1026.3 1028.1 1031.5 1031.5 DAY 6 8 23 1 9 23 28 26 23 9 30 27 MIN. QFF PRESSURE IN HPA 1006.9 1008.1 1006.9 1003.8 999.6 996.6 992.0 995.1 1003.2 1009.2 1007.8 1016.0 992.0 DAY 9 3 22 13 29 16 14 12 3 2 14 5 PRESSURE AT HOUR 0900 UTC. MEAN QFE PRESSURE IN HPA 860.6 860.2 859.4 858.4 858.0 855.0 853.9 856.3 858.4 864.0 861.8 863.0 859.1 MAX. QFE PRESSURE IN HPA 867.2 864.7 865.6 863.6 861.4 861.8 858.8 859.0 862.2 868.1 865.7 869.2 869.2 DAY 6 8 31 1 9 23 27 25 23 17 30 26 MIN. QFE PRESSURE IN HPA 852.6 854.2 850.8 852.3 851.6 851.4 849.3 851.0 855.5 858.5 854.9 857.6 849.3 DAY 9 3 12 13 29 3 14 12 3 3 14 5 MEAN QNH PRESSURE IN HPA 1019.3 1018.9 1017.9 1016.8 1016.4 1012.9 1011.6 1014.3 1016.8 1023.3 1020.8 1022.1 1017.6 MAX. QNH PRESSURE IN HPA 1026.9 1024.0 1025.1 1022.8 1020.2 1020.7 1017.3 1017.5 1021.2 1027.9 1025.2 1029.2 1029.2 DAY 6 8 31 1 9 23 27 25 23 17 30 26 MIN. QNH PRESSURE IN HPA 1010.1 1012.0 1008.1 1009.8 1009.0 1008.8 1006.4 1008.3 1013.5 1016.9 1012.8 1015.9 1006.4 DAY 9 3 12 13 29 3 14 12 3 3 14 5 MEAN QFF PRESSURE IN HPA 1019.5 1016.1 1014.4 1008.5 1005.5 999.4 997.7 1001.3 1005.9 1016.5 1016.0 1020.5 1010.1 MAX. QFF PRESSURE IN HPA 1028.1 1024.9 1022.5 1017.8 1012.1 1009.6 1003.7 1006.3 1010.9 1023.3 1025.3 1027.3 1028.1 DAY 6 8 23 1 9 23 28 26 23 9 30 26 MIN. QFF PRESSURE IN HPA 1004.9 1006.6 1004.7 1001.9 995.9 994.7 990.3 993.6 1001.5 1007.1 1004.9 1010.9 990.3 DAY 9 3 22 13 29 15 14 12 29 3 14 5 PRESSURE AT HOUR 1200 UTC. MEAN QFE PRESSURE IN HPA 859.3 858.5 857.5 856.5 856.1 853.2 852.3 854.5 856.7 862.4 860.3 861.5 857.4 MAX. QFE PRESSURE IN HPA 866.6 863.0 863.6 861.2 860.0 859.5 857.4 857.6 860.4 866.8 864.8 867.6 867.6 DAY 6 7 31 17 9 23 27 26 23 17 21 26 MIN. QFE PRESSURE IN HPA 851.0 852.8 848.2 851.0 850.0 850.0 847.2 848.8 853.1 856.4 855.1 854.9 847.2 DAY 8 23 12 13 29 3 13 12 3 3 14 4 MEAN QNH PRESSURE IN HPA 1017.8 1016.9 1015.8 1014.6 1014.2 1010.8 1009.8 1012.3 1014.9 1021.4 1019.0 1020.4 1015.7 MAX. QNH PRESSURE IN HPA 1026.2 1022.1 1022.8 1020.0 1018.6 1018.1 1015.7 1015.9 1019.1 1026.4 1024.1 1027.4 1027.4 DAY 6 7 31 17 9 23 27 26 23 17 21 26 MIN. QNH PRESSURE IN HPA 1008.3 1010.4 1005.1 1008.3 1007.2 1007.2 1003.9 1005.8 1010.7 1014.5 1013.0 1012.8 1003.9 DAY 8 23 12 13 29 3 13 12 3 3 14 4 MEAN QFF PRESSURE IN HPA 1017.7 1014.1 1012.1 1006.6 1003.6 997.7 996.5 999.7 1004.1 1014.7 1014.2 1018.4 1008.3 MAX. QFF PRESSURE IN HPA 1027.7 1022.2 1020.8 1014.5 1011.6 1007.0 1002.4 1005.0 1009.1 1021.4 1023.7 1025.6 1027.7 DAY 6 8 23 1 9 23 27 26 23 8 30 26 MIN. QFF PRESSURE IN HPA 1004.4 1006.0 1001.3 1000.6 994.4 992.7 988.9 991.5 999.3 1003.8 1004.5 1010.6 988.9 DAY 9 23 12 13 29 15 14 12 3 2 14 4 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ANAR (40839) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 30 53 N LONGITUDE 55 15 E DATA PROCESSING CENTER ELEVATION 1408.8 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 859.9 859.0 858.0 856.4 856.1 852.8 852.0 854.4 856.7 862.8 861.1 862.2 857.6 MAX. QFE PRESSURE IN HPA 867.8 864.0 863.6 860.8 859.6 858.9 856.4 857.6 860.8 867.1 865.2 868.2 868.2 DAY 6 7 31 17 9 23 27 26 23 16 21 26 MIN. QFE PRESSURE IN HPA 851.0 854.2 851.7 850.6 851.7 849.6 846.8 848.5 853.1 856.4 856.8 854.8 846.8 DAY 8 23 21 13 29 13 13 12 3 3 6 4 MEAN QNH PRESSURE IN HPA 1018.5 1017.5 1016.3 1014.5 1014.1 1010.3 1009.5 1012.2 1014.8 1021.8 1019.8 1021.2 1015.9 MAX. QNH PRESSURE IN HPA 1027.6 1023.2 1022.8 1019.6 1018.2 1017.4 1014.5 1015.9 1019.6 1026.8 1024.6 1028.0 1028.0 DAY 6 7 31 17 9 23 27 26 23 16 21 26 MIN. QNH PRESSURE IN HPA 1008.3 1012.0 1009.1 1007.8 1009.1 1006.7 1003.5 1005.4 1010.7 1014.5 1015.0 1012.7 1003.5 DAY 8 23 21 13 29 13 13 12 3 3 6 4 MEAN QFF PRESSURE IN HPA 1019.7 1015.5 1013.4 1007.2 1003.9 997.2 996.3 1000.2 1005.4 1016.7 1016.7 1021.4 1009.5 MAX. QFF PRESSURE IN HPA 1029.5 1024.0 1021.2 1014.7 1011.3 1006.3 1002.3 1005.2 1011.6 1023.3 1026.3 1028.2 1029.5 DAY 6 7 23 1 9 23 28 26 23 8 30 26 MIN. QFF PRESSURE IN HPA 1006.2 1007.4 1003.4 1000.8 997.9 992.1 988.7 992.2 1000.0 1005.9 1008.7 1011.7 988.7 DAY 8 23 21 13 29 13 14 12 3 3 10 4 PRESSURE AT HOUR 1800 UTC. MEAN QFE PRESSURE IN HPA 860.9 860.1 859.1 857.8 857.3 853.7 853.1 855.5 857.7 863.8 862.1 863.2 858.7 MAX. QFE PRESSURE IN HPA 868.0 864.8 864.0 862.4 860.6 859.9 857.6 858.8 861.8 868.1 866.2 868.4 868.4 DAY 6 7 31 16 9 23 27 25 23 16 21 26 MIN. QFE PRESSURE IN HPA 851.8 855.1 852.5 852.4 854.2 850.7 847.4 849.4 854.2 857.7 858.0 855.1 847.4 DAY 8 4 21 13 31 13 13 12 3 3 6 4 MEAN QNH PRESSURE IN HPA 1019.6 1018.8 1017.6 1016.1 1015.6 1011.4 1010.7 1013.4 1016.0 1023.0 1021.1 1022.3 1017.1 MAX. QNH PRESSURE IN HPA 1027.8 1024.1 1023.2 1021.4 1019.3 1018.5 1015.9 1017.3 1020.7 1027.9 1025.7 1028.3 1028.3 DAY 6 7 31 16 9 23 27 25 23 16 21 26 MIN. QNH PRESSURE IN HPA 1009.2 1013.0 1010.0 1009.9 1012.0 1008.0 1004.2 1006.5 1012.0 1016.0 1016.3 1013.0 1004.2 DAY 8 4 21 13 31 13 13 12 3 3 6 4 MEAN QFF PRESSURE IN HPA 1020.7 1016.5 1014.0 1008.0 1004.8 997.9 996.7 1000.3 1005.5 1016.8 1017.2 1022.1 1010.0 MAX. QFF PRESSURE IN HPA 1029.8 1025.2 1022.2 1014.5 1011.3 1007.4 1002.9 1005.5 1010.6 1023.6 1027.0 1028.4 1029.8 DAY 6 7 23 1 9 23 27 25 22 8 30 26 MIN. QFF PRESSURE IN HPA 1007.1 1009.5 1004.1 1002.1 999.5 993.2 988.4 992.8 1000.6 1006.4 1009.1 1010.7 988.4 DAY 8 21 21 12 28 13 13 12 3 3 10 4 PRESSURE AT HOUR 2100 UTC. MEAN QFE PRESSURE IN HPA 860.6 859.9 859.4 857.8 857.5 854.0 853.5 855.7 857.9 863.8 862.2 863.1 858.8 MAX. QFE PRESSURE IN HPA 866.6 864.8 864.0 863.4 860.6 859.8 857.6 859.2 861.8 868.1 866.4 868.8 868.8 DAY 6 7 31 16 9 22 27 30 23 16 21 26 MIN. QFE PRESSURE IN HPA 851.8 853.2 852.1 852.4 854.2 851.0 847.7 849.7 854.7 858.0 857.4 855.1 847.7 DAY 8 4 21 13 31 3 13 12 3 2 13 4 MEAN QNH PRESSURE IN HPA 1019.3 1018.6 1017.9 1016.1 1015.8 1011.7 1011.2 1013.8 1016.2 1023.0 1021.2 1022.2 1017.2 MAX. QNH PRESSURE IN HPA 1026.2 1024.1 1023.2 1022.5 1019.3 1018.4 1015.9 1017.7 1020.7 1027.9 1026.0 1028.7 1028.7 DAY 6 7 31 16 9 22 27 30 23 16 21 26 MIN. QNH PRESSURE IN HPA 1009.2 1010.8 1009.6 1009.9 1012.0 1008.3 1004.5 1006.8 1012.6 1016.3 1015.7 1013.0 1004.5 DAY 8 4 21 13 31 3 13 12 3 2 13 4 MEAN QFF PRESSURE IN HPA 1019.4 1015.8 1014.0 1007.7 1004.9 998.3 997.2 1000.7 1005.3 1016.2 1016.6 1020.5 1009.7 MAX. QFF PRESSURE IN HPA 1027.9 1025.2 1022.3 1013.8 1011.6 1007.1 1003.5 1006.2 1010.4 1023.0 1025.9 1027.3 1027.9 DAY 6 7 23 16 9 23 27 25 17 8 30 6 MIN. QFF PRESSURE IN HPA 1004.2 1008.2 1004.4 1001.9 999.8 992.7 988.4 992.3 999.6 1005.9 1007.9 1009.1 988.4 DAY 8 14 21 12 28 18 13 11 14 2 13 4 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ANAR (40839) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 30 53 N LONGITUDE 55 15 E DATA PROCESSING CENTER ELEVATION 1408.8 M MEANS AND EXTREMES FOR THE YEAR 1994 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AIR TEMPERATURE (C) 7.2 8.4 13.7 19.2 23.9 29.8 31.6 30.1 21.6 17.5 15.4 6.8 18.8 MINIMUN AIR TEMPERATURE (C) -0.9 -1.0 5.8 10.5 15.3 20.1 21.7 20.2 12.2 9.6 7.6 -1.5 10.0 DAYS WITH MINIMUM TEMP. >=21 0 0 0 0 0 14 21 16 0 0 0 0 51 DAYS WITH MINIMUM TEMP. <=-4 9 6 0 0 0 0 0 0 0 0 0 14 29 DAYS WITH FREEZING MIN.<= 0 21 21 3 0 0 0 0 0 0 0 0 19 64 TEMPERATURE RECORDS LOWEST(C) -10.0 -7.4 -0.4 1.0 9.2 14.0 18.0 15.6 5.0 3.0 0.4 -12.4 -12.4 DAY 12 21 3 6 8 12 15 26 22 14 12 8 MAXIMUM AIR TEMPERATURE (C) 14.8 16.9 21.1 26.7 31.4 37.5 39.4 38.8 29.9 25.1 23.2 14.9 26.6 DAYS WITH MAXIMUM TEMP. >=30 0 0 0 8 24 30 31 31 15 2 0 0 141 DAYS WITH MAXIMUM TEMP. <= 0 0 0 0 0 0 0 0 0 0 0 0 0 0 TEMPERATURE RECORDS HIGHEST(C) 23.0 24.0 27.4 33.4 36.0 42.0 42.4 41.6 36.8 31.4 27.2 22.6 42.4 DAY 3 1 31 26 25 26 8 4 1 1 7 3 DIF. BETWEEN (MAX.-MIN.) (C) 15.7 17.9 15.3 16.2 16.1 17.4 17.7 18.6 17.7 15.5 15.6 16.4 16.6 MEAN DAILY TEMP. (MDT) (C) 6.9 7.9 13.5 18.6 23.3 28.8 30.5 29.5 21.1 17.3 15.4 6.7 18.3 COOLING DEG. DAYS(BASE 21 0C) 0.0 0.0 0.0 20.8 83.8 233.2 295.8 263.1 43.1 2.8 0.0 0.0 942.6 HEATING DEG. DAYS(BASE 18 0C) 343.9 281.9 140.6 35.6 0.2 0.0 0.0 0.0 7.8 39.3 85.2 350.4 1284.9 DEWPOINT (MEAN C) -6.6 -9.2 -3.2 -3.3 -1.3 -3.2 4.1 -0.2 -4.9 1.4 -2.2 -8.0 -3.0 MIXING RATIO (G/KG) 2.88 2.42 3.89 3.81 4.43 3.82 6.40 4.81 3.34 5.34 4.13 2.79 4.01 VAPOUR PRESSURE (HPA) 3.96 3.33 5.33 5.23 6.06 5.19 8.64 6.54 4.58 7.34 5.68 3.84 5.48 SATURATION DEF. (HPA) 7.15 8.81 11.25 18.63 25.12 38.99 40.11 39.01 23.17 13.72 12.81 7.20 20.50 RELATIVE HUMIDITY (MEAN %) 42 34 37 25 24 14 20 16 19 38 34 37 28 RELATIVE HUMIDITY (MAX. %) 64 57 62 44 43 24 31 30 33 61 54 58 47 RELATIVE HUMIDITY (MIN. %) 23 16 18 12 11 6 11 8 10 20 18 20 14 RELATIVE HUMIDITY (MEAN% 03UTC) 56 50 55 41 39 22 29 26 30 57 47 50 42 RELATIVE HUMIDITY (MEAN% 09UTC) 31 22 23 15 14 8 13 10 12 25 22 26 18 RELATIVE HUMIDITY (MEAN% 15UTC) 33 22 27 15 15 8 14 10 14 29 27 32 21 RH=0 => RELATIVE HUMIDITY < 0.5% AMOUNT OF PRECIPITATION MM. 3.2 2.4 20.2 4.4 15.8 0.0 0.0 0.0 0.0 4.0 1.5 3.0 54.5 DAYS WITH PRECIPITATION >=10 0 0 0 0 1 0 0 0 0 0 0 0 1 DAYS WITH PRECIPITATION >= 5 0 0 1 0 1 0 0 0 0 0 0 0 2 DAYS WITH PRECIPITATION >= 1 1 1 7 2 1 0 0 0 0 2 1 1 16 DAYS WITH PRECIPITATION 2 2 8 2 3 0 0 0 0 5 2 1 25 GREATEST DAILY PRECIPITATION 2.2 2.4 5.8 3.0 15.0 0.0 0.0 0.0 0.0 1.6 1.0 3.0 15.0 DAY 24 19 10 28 6 ** ** ** ** 7 18 4 DAY WITH THUNDER STORM 0 0 1 1 0 0 0 0 0 2 0 0 4 DAYS WITH SNOW OR SLEET 0 2 0 0 0 0 0 0 0 0 0 0 2 DAYS WITH DUST 2 4 2 2 3 1 0 0 0 0 0 0 14 WIND DIRECTION (PREVAILING) 225 225 225 225 225 360 45 360 360 45 225 225 225 PREVAILING WIND SPEED(KNOTS) 10.6 12.4 11.7 7.8 9.7 7.6 7.2 6.5 6.6 5.4 9.2 10.2 9.2 PREVAILING WIND PERCENT 19.0 15.2 19.0 13.8 14.1 14.2 18.5 16.5 19.2 9.7 21.7 19.0 13.3 CALMS PERCENT OF WIND 58.1 54.0 42.3 43.3 46.4 39.6 51.6 57.7 49.2 61.7 46.7 53.2 50.3 NO. OF WIND OBSERVATION 248 224 248 240 248 240 248 248 240 248 240 248 2920 VECTOR WIND DIRECTION (MEAN) 224 249 216 286 269 327 12 7 1 321 204 216 257 VECTOR WIND MAGNITUDE(KNOTS) 2.1 3.0 3.5 2.2 1.8 2.2 2.2 1.5 1.8 0.7 4.3 3.1 1.3 WIND STEADINESES (MEAN %) 56.8 58.8 62.5 47.8 39.1 51.2 62.9 55.6 58.1 30.4 84.3 68.9 31.7 WIND SPEED (MEAN KNOTS) 3.7 5.1 5.6 4.6 4.6 4.3 3.5 2.7 3.1 2.3 5.1 4.5 4.1 FASTEST WIND DIRECTION 210 210 270 180 210 360 30 30 20 300 180 210 270 FASTEST WIND SPEED (KNOTS) 23 29 31 19 27 14 16 14 12 17 19 19 31 DAY 16 1 15 2 1 2 1 9 6 1 5 20 DAYS WITH SKY CLEAR (0-2)/8 17 21 15 19 21 28 31 30 26 15 16 20 259 DAYS WITH P.CLOUDY (3-6)/8 11 7 11 10 8 2 0 1 4 16 9 7 86 DAYS WITH CLOUDY (7-8)/8 3 0 5 1 2 0 0 0 0 0 5 4 20 DAYS WITH VISIBILITY =< 2 KM 0 3 0 0 0 0 0 0 0 0 0 0 3 DURATION OF SUNSHINE HOURS 211.7 246.8 237.0 278.9 305.8 353.5 366.1 357.9 306.5 267.1 207.6 239.6 3378.5 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ANAR (40839) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 30 53 N LONGITUDE 55 15 E DATA PROCESSING CENTER ELEVATION 1408.8 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 861.0 857.7 858.6 859.0 857.5 851.9 850.3 852.5 860.4 863.1 861.7 862.4 858.0 MAX. QFE PRESSURE IN HPA 869.6 865.2 865.0 868.0 863.8 858.4 855.0 857.4 868.6 870.1 868.4 869.6 870.1 DAY-HOUR 10- 6 20- 6 18- 6 5- 6 15- 6 9- 6 3- 6 16- 6 23- 6 10- 6 2- 6 8- 6 MIN. QFE PRESSURE IN HPA 853.0 848.8 850.0 851.6 850.8 845.1 846.0 847.0 851.7 857.6 854.5 850.9 845.1 DAY-HOUR 16-12 12-12 12-12 3-12 1-12 28-15 7-15 2-12 4-15 1-12 26- 0 4- 0 MEAN QNH PRESSURE IN HPA 1019.7 1016.0 1017.0 1017.5 1015.8 1009.4 1007.5 1010.1 1019.0 1022.2 1020.6 1021.3 1016.3 MAX. QNH PRESSURE IN HPA 1029.6 1024.6 1024.4 1027.8 1023.0 1016.8 1012.9 1015.7 1028.5 1030.2 1028.3 1029.6 1030.2 DAY-HOUR 10- 6 20- 6 18- 6 5- 6 15- 6 9- 6 3- 6 16- 6 23- 6 10- 6 2- 6 8- 6 MIN. QNH PRESSURE IN HPA 1010.6 1005.8 1007.2 1009.0 1008.1 1001.5 1002.6 1003.7 1009.1 1015.9 1012.3 1008.2 1001.5 DAY-HOUR 16-12 12-12 12-12 3-12 1-12 28-15 7-15 2-12 4-15 1-12 26- 0 4- 0 MEAN QFF PRESSURE IN HPA 1018.9 1014.4 1012.2 1009.6 1005.2 995.7 992.7 996.1 1009.9 1015.2 1014.8 1020.9 1008.8 MAX. QFF PRESSURE IN HPA 1031.9 1028.7 1022.0 1024.8 1012.2 1004.7 999.8 1003.2 1022.1 1026.0 1023.1 1036.5 1036.5 DAY-HOUR 28- 6 20- 6 18- 3 5-18 15- 6 9- 6 14- 3 24- 3 22- 3 10- 3 20- 3 8- 6 MIN. QFF PRESSURE IN HPA 1005.5 999.0 999.3 1000.6 997.5 987.5 985.3 988.8 996.8 1005.8 1004.6 1000.7 985.3 DAY-HOUR 5-12 12-12 12-12 26-21 1-12 28-15 9-12 1-12 1-12 2-21 25-21 4- 0 PRESSURE AT HOUR 0000 UTC. MEAN QFE PRESSURE IN HPA 860.9 857.6 858.4 859.1 857.4 852.0 850.4 852.4 860.1 863.1 861.8 862.2 858.0 MAX. QFE PRESSURE IN HPA 867.9 863.9 863.0 866.2 861.4 856.8 854.3 855.0 866.4 868.4 865.4 868.2 868.4 DAY 10 21 19 6 15 10 14 23 24 10 2 8 MIN. QFE PRESSURE IN HPA 853.8 851.2 853.6 853.6 853.6 847.2 847.5 848.0 852.6 858.8 854.5 850.9 847.2 DAY 26 12 12 3 2 29 8 2 1 3 26 4 MEAN QNH PRESSURE IN HPA 1019.7 1015.9 1016.7 1017.6 1015.7 1009.5 1007.7 1010.0 1018.8 1022.2 1020.7 1021.1 1016.3 MAX. QNH PRESSURE IN HPA 1027.7 1023.1 1022.1 1025.7 1020.2 1015.0 1012.1 1012.9 1026.0 1028.3 1024.8 1028.0 1028.3 DAY 10 21 19 6 15 10 14 23 24 10 2 8 MIN. QNH PRESSURE IN HPA 1011.5 1008.5 1011.3 1011.3 1011.3 1003.9 1004.3 1004.9 1010.1 1017.3 1012.3 1008.2 1003.9 DAY 26 12 12 3 2 29 8 2 1 3 26 4 MEAN QFF PRESSURE IN HPA 1018.3 1013.5 1011.6 1009.7 1005.2 996.0 993.0 996.0 1009.5 1014.7 1014.5 1019.9 1008.5 MAX. QFF PRESSURE IN HPA 1029.4 1026.4 1019.8 1023.4 1010.4 1003.7 999.0 1000.6 1019.5 1024.3 1020.2 1034.9 1034.9 DAY 10 20 18 6 8 9 14 24 23 10 20 8 MIN. QFF PRESSURE IN HPA 1009.5 1002.2 1004.8 1001.8 1000.9 990.1 986.9 989.5 997.4 1006.5 1005.0 1000.7 986.9 DAY 23 12 12 27 2 29 9 3 1 3 26 4 PRESSURE AT HOUR 0300 UTC. MEAN QFE PRESSURE IN HPA 861.5 858.3 859.3 860.2 858.6 853.3 851.4 853.6 861.1 864.0 862.5 862.9 858.9 MAX. QFE PRESSURE IN HPA 868.5 863.9 864.0 866.2 863.1 857.6 854.6 856.4 867.4 869.2 867.0 868.7 869.2 DAY 10 21 18 5 15 9 14 16 24 10 2 8 MIN. QFE PRESSURE IN HPA 854.8 851.5 853.2 854.0 854.9 848.3 848.0 849.0 853.6 859.9 855.0 851.2 848.0 DAY 26 12 12 3 1 29 8 3 3 3 26 4 MEAN QNH PRESSURE IN HPA 1020.4 1016.7 1017.8 1018.9 1017.0 1010.9 1008.8 1011.2 1019.9 1023.2 1021.5 1022.0 1017.4 MAX. QNH PRESSURE IN HPA 1028.4 1023.1 1023.2 1025.7 1022.2 1015.9 1012.4 1014.5 1027.1 1029.2 1026.7 1028.6 1029.2 DAY 10 21 18 5 15 9 14 16 24 10 2 8 MIN. QNH PRESSURE IN HPA 1012.7 1008.9 1010.8 1011.8 1012.8 1005.2 1004.9 1006.0 1011.3 1018.5 1012.9 1008.5 1004.9 DAY 26 12 12 3 1 29 8 3 3 3 26 4 MEAN QFF PRESSURE IN HPA 1020.4 1016.0 1013.7 1011.7 1007.0 997.7 994.4 998.0 1011.8 1017.2 1016.9 1022.6 1010.6 MAX. QFF PRESSURE IN HPA 1031.8 1028.3 1022.0 1024.7 1012.1 1004.7 999.8 1003.2 1022.1 1026.0 1023.1 1036.1 1036.1 DAY 10 20 18 6 15 9 14 24 22 10 20 8 MIN. QFF PRESSURE IN HPA 1010.0 1003.7 1005.8 1004.3 1002.5 990.7 988.1 991.1 999.4 1009.5 1006.6 1001.7 988.1 DAY 23 12 12 27 1 29 8 3 3 2 26 4 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ANAR (40839) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 30 53 N LONGITUDE 55 15 E DATA PROCESSING CENTER ELEVATION 1408.8 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 862.9 859.5 860.3 860.9 859.2 853.8 851.8 854.2 862.1 865.0 863.5 864.1 859.8 MAX. QFE PRESSURE IN HPA 869.6 865.2 865.0 868.0 863.8 858.4 855.0 857.4 868.6 870.1 868.4 869.6 870.1 DAY 10 20 18 5 15 9 3 16 23 10 2 8 MIN. QFE PRESSURE IN HPA 855.9 851.8 853.6 854.8 854.4 848.6 848.4 849.6 854.8 861.1 855.0 854.1 848.4 DAY 16 12 12 3 1 29 8 1 1 3 26 4 MEAN QNH PRESSURE IN HPA 1021.9 1018.1 1019.0 1019.6 1017.7 1011.5 1009.2 1012.0 1021.0 1024.3 1022.7 1023.3 1018.4 MAX. QNH PRESSURE IN HPA 1029.6 1024.6 1024.4 1027.8 1023.0 1016.8 1012.9 1015.7 1028.5 1030.2 1028.3 1029.6 1030.2 DAY 10 20 18 5 15 9 3 16 23 10 2 8 MIN. QNH PRESSURE IN HPA 1013.9 1009.2 1011.3 1012.7 1012.2 1005.6 1005.3 1006.7 1012.7 1019.9 1012.9 1011.9 1005.3 DAY 16 12 12 3 1 29 8 1 1 3 26 4 MEAN QFF PRESSURE IN HPA 1021.7 1017.0 1014.3 1011.6 1006.9 997.7 994.1 997.7 1011.5 1017.3 1017.0 1023.0 1010.8 MAX. QFF PRESSURE IN HPA 1031.9 1028.7 1021.6 1024.5 1012.2 1004.7 998.7 1002.3 1021.5 1025.1 1022.8 1036.5 1036.5 DAY 28 20 18 5 15 9 14 22 23 10 22 8 MIN. QFF PRESSURE IN HPA 1011.3 1004.8 1004.8 1004.1 1001.6 990.6 988.2 990.5 999.9 1009.7 1005.9 1006.8 988.2 DAY 23 12 12 26 1 29 8 1 1 2 26 4 PRESSURE AT HOUR 0900 UTC. MEAN QFE PRESSURE IN HPA 861.3 858.0 859.0 859.3 857.9 852.5 850.7 852.9 860.7 863.1 861.5 862.3 858.3 MAX. QFE PRESSURE IN HPA 868.2 864.5 864.0 867.4 862.5 857.6 853.8 855.8 867.4 868.3 866.4 867.5 868.3 DAY 28 20 18 5 15 9 3 16 23 10 1 8 MIN. QFE PRESSURE IN HPA 854.2 850.6 852.0 853.1 853.0 847.6 847.4 848.4 853.6 859.3 855.2 853.0 847.4 DAY 16 12 12 3 1 29 8 2 1 3 26 4 MEAN QNH PRESSURE IN HPA 1020.1 1016.4 1017.5 1017.8 1016.2 1010.0 1008.0 1010.5 1019.4 1022.2 1020.4 1021.3 1016.6 MAX. QNH PRESSURE IN HPA 1028.0 1023.8 1023.2 1027.1 1021.5 1015.9 1011.5 1013.8 1027.1 1028.2 1026.0 1027.2 1028.2 DAY 28 20 18 5 15 9 3 16 23 10 1 8 MIN. QNH PRESSURE IN HPA 1012.0 1007.8 1009.5 1010.7 1010.6 1004.4 1004.2 1005.3 1011.3 1017.8 1013.1 1010.6 1004.2 DAY 16 12 12 3 1 29 8 2 1 3 26 4 MEAN QFF PRESSURE IN HPA 1018.7 1014.2 1012.2 1009.4 1005.5 996.1 992.9 996.2 1009.7 1014.6 1013.8 1020.2 1008.6 MAX. QFF PRESSURE IN HPA 1028.6 1026.9 1020.1 1023.8 1010.2 1003.9 997.4 1000.8 1020.4 1023.6 1019.4 1033.6 1033.6 DAY 28 20 18 5 15 9 3 22 23 10 20 8 MIN. QFF PRESSURE IN HPA 1007.6 1001.5 1002.8 1002.8 1000.2 989.7 987.0 990.1 998.1 1007.0 1005.8 1004.7 987.0 DAY 5 12 12 30 1 29 8 3 1 2 26 4 PRESSURE AT HOUR 1200 UTC. MEAN QFE PRESSURE IN HPA 859.6 856.0 857.2 857.4 856.1 850.7 849.0 851.2 858.9 861.5 860.3 860.9 856.6 MAX. QFE PRESSURE IN HPA 866.0 862.9 862.0 866.2 860.4 856.0 852.2 854.0 865.8 866.8 864.4 865.6 866.8 DAY 9 20 18 5 15 9 13 16 23 10 1 7 MIN. QFE PRESSURE IN HPA 853.0 848.8 850.0 851.6 850.8 845.8 846.0 847.0 851.8 857.6 854.8 851.4 845.8 DAY 16 12 12 3 1 29 8 2 1 1 26 4 MEAN QNH PRESSURE IN HPA 1018.2 1014.0 1015.4 1015.6 1014.2 1007.9 1006.0 1008.6 1017.4 1020.3 1018.9 1019.7 1014.7 MAX. QNH PRESSURE IN HPA 1025.5 1022.0 1020.9 1025.7 1019.1 1014.0 1009.7 1011.8 1025.3 1026.4 1023.7 1025.1 1026.4 DAY 9 20 18 5 15 9 13 16 23 10 1 7 MIN. QNH PRESSURE IN HPA 1010.6 1005.8 1007.2 1009.0 1008.1 1002.3 1002.6 1003.7 1009.2 1015.9 1012.7 1008.8 1002.3 DAY 16 12 12 3 1 29 8 2 1 1 26 4 MEAN QFF PRESSURE IN HPA 1016.7 1011.6 1010.3 1007.8 1003.7 994.4 991.3 994.7 1008.1 1013.0 1012.8 1018.5 1006.9 MAX. QFF PRESSURE IN HPA 1026.8 1024.8 1017.9 1023.2 1009.1 1003.2 996.0 999.5 1018.7 1022.3 1018.0 1031.3 1031.3 DAY 9 20 18 5 8 9 13 24 23 10 20 8 MIN. QFF PRESSURE IN HPA 1005.5 999.0 999.3 1001.1 997.5 988.1 985.3 988.8 996.8 1006.1 1006.1 1003.5 985.3 DAY 5 12 12 26 1 28 9 1 1 1 26 4 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ANAR (40839) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 30 53 N LONGITUDE 55 15 E DATA PROCESSING CENTER ELEVATION 1408.8 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 860.0 856.4 857.5 857.5 856.1 850.2 848.7 851.1 859.1 862.1 861.0 861.6 856.8 MAX. QFE PRESSURE IN HPA 866.8 863.1 862.0 866.8 859.9 856.0 852.5 854.0 866.0 867.1 865.4 867.4 867.4 DAY 9 20 18 5 15 9 13 16 23 10 2 7 MIN. QFE PRESSURE IN HPA 853.0 850.2 850.8 851.6 851.0 845.1 846.0 847.0 851.7 857.8 855.9 851.4 845.1 DAY 16 12 12 3 1 28 7 2 4 2 25 4 MEAN QNH PRESSURE IN HPA 1018.6 1014.5 1015.7 1015.7 1014.2 1007.4 1005.7 1008.4 1017.6 1021.0 1019.8 1020.5 1014.9 MAX. QNH PRESSURE IN HPA 1026.4 1022.2 1020.9 1026.4 1018.5 1014.0 1010.0 1011.8 1025.5 1026.8 1024.8 1027.1 1027.1 DAY 9 20 18 5 15 9 13 16 23 10 2 7 MIN. QNH PRESSURE IN HPA 1010.6 1007.4 1008.1 1009.0 1008.3 1001.5 1002.6 1003.7 1009.1 1016.1 1013.9 1008.8 1001.5 DAY 16 12 12 3 1 28 7 2 4 2 25 4 MEAN QFF PRESSURE IN HPA 1018.5 1013.7 1011.6 1008.6 1004.2 994.1 991.2 995.2 1009.4 1015.1 1015.2 1021.1 1008.2 MAX. QFF PRESSURE IN HPA 1029.5 1026.2 1019.0 1024.5 1009.4 1003.2 996.6 999.7 1020.2 1024.0 1021.0 1033.2 1033.2 DAY 10 20 18 5 7 9 13 23 23 10 20 7 MIN. QFF PRESSURE IN HPA 1007.2 1002.7 1002.0 1001.8 999.0 987.5 986.1 989.7 997.6 1006.4 1007.4 1003.8 986.1 DAY 5 12 12 30 1 28 8 3 3 2 25 4 PRESSURE AT HOUR 1800 UTC. MEAN QFE PRESSURE IN HPA 860.8 857.8 858.5 858.8 857.4 851.4 850.2 852.4 860.4 863.3 861.8 862.5 857.9 MAX. QFE PRESSURE IN HPA 867.8 864.6 863.0 867.4 860.6 856.6 853.8 855.2 867.0 868.2 866.2 868.4 868.4 DAY 9 20 17 5 15 8 13 23 23 9 2 7 MIN. QFE PRESSURE IN HPA 853.6 852.8 852.0 853.2 852.4 846.9 847.3 848.1 853.3 858.9 854.7 851.4 846.9 DAY 16 11 12 3 1 29 7 1 4 2 25 4 MEAN QNH PRESSURE IN HPA 1019.5 1016.1 1017.0 1017.3 1015.6 1008.7 1007.4 1009.9 1019.1 1022.4 1020.7 1021.5 1016.3 MAX. QNH PRESSURE IN HPA 1027.6 1023.9 1022.1 1027.1 1019.3 1014.7 1011.5 1013.1 1026.7 1028.0 1025.7 1028.3 1028.3 DAY 9 20 17 5 15 8 13 23 23 9 2 7 MIN. QNH PRESSURE IN HPA 1011.3 1010.4 1009.5 1010.8 1009.9 1003.6 1004.1 1005.0 1010.9 1017.4 1012.6 1008.8 1003.6 DAY 16 11 12 3 1 29 7 1 4 2 25 4 MEAN QFF PRESSURE IN HPA 1019.2 1014.9 1012.2 1009.2 1004.8 994.9 992.3 995.6 1009.5 1015.3 1014.9 1021.2 1008.7 MAX. QFF PRESSURE IN HPA 1029.9 1027.9 1019.8 1024.8 1010.1 1002.5 997.6 999.5 1019.8 1023.2 1020.9 1035.0 1035.0 DAY 9 20 18 5 7 9 13 24 23 10 20 7 MIN. QFF PRESSURE IN HPA 1007.7 1006.4 1002.4 1001.3 998.8 989.1 987.1 990.0 998.5 1006.9 1006.6 1003.2 987.1 DAY 5 12 12 26 1 29 8 3 2 2 25 3 PRESSURE AT HOUR 2100 UTC. MEAN QFE PRESSURE IN HPA 860.7 857.9 858.7 859.1 857.5 851.6 850.4 852.6 860.6 863.3 861.7 862.5 858.0 MAX. QFE PRESSURE IN HPA 867.8 864.8 863.4 867.4 860.6 856.6 854.0 855.2 866.7 868.6 865.8 868.4 868.6 DAY 9 20 18 5 15 8 13 23 23 9 2 7 MIN. QFE PRESSURE IN HPA 853.4 851.7 852.0 853.5 853.2 847.1 847.4 848.1 853.7 858.5 854.8 852.1 847.1 DAY 25 11 12 3 1 28 21 1 4 2 25 3 MEAN QNH PRESSURE IN HPA 1019.5 1016.3 1017.1 1017.6 1015.7 1009.0 1007.6 1010.1 1019.3 1022.4 1020.5 1021.5 1016.4 MAX. QNH PRESSURE IN HPA 1027.6 1024.1 1022.5 1027.1 1019.3 1014.7 1011.8 1013.1 1026.3 1028.5 1025.3 1028.3 1028.5 DAY 9 20 18 5 15 8 13 23 23 9 2 7 MIN. QNH PRESSURE IN HPA 1011.1 1009.1 1009.5 1011.2 1010.8 1003.8 1004.2 1005.0 1011.4 1016.9 1012.7 1009.6 1003.8 DAY 25 11 12 3 1 28 21 1 4 2 25 3 MEAN QFF PRESSURE IN HPA 1018.0 1014.0 1011.7 1009.1 1004.8 994.9 992.5 995.9 1009.6 1014.8 1013.9 1020.4 1008.3 MAX. QFF PRESSURE IN HPA 1029.2 1026.8 1019.9 1024.5 1009.3 1002.3 997.6 999.5 1019.2 1023.8 1019.9 1035.0 1035.0 DAY 9 20 17 5 7 9 13 22 22 9 19 7 MIN. QFF PRESSURE IN HPA 1007.4 1004.8 1002.0 1000.6 999.5 988.5 986.6 989.6 998.7 1005.8 1004.6 1001.0 986.6 DAY 5 11 12 26 24 26 8 3 4 2 25 3 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ANAR (40839) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 30 53 N LONGITUDE 55 15 E DATA PROCESSING CENTER ELEVATION 1408.8 M MEANS AND EXTREMES FOR THE YEAR 1995 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AIR TEMPERATURE (C) 7.9 8.5 12.0 18.0 22.6 28.1 32.3 28.8 24.6 17.8 12.5 5.1 18.2 MINIMUN AIR TEMPERATURE (C) -0.5 1.6 4.9 10.8 14.1 18.9 22.4 18.4 14.8 9.2 3.3 0.0 9.8 DAYS WITH MINIMUM TEMP. >=21 0 0 0 0 0 6 26 2 0 0 0 0 34 DAYS WITH MINIMUM TEMP. <=-4 8 1 0 0 0 0 0 0 0 0 4 0 13 DAYS WITH FREEZING MIN.<= 0 21 12 7 0 0 0 0 0 0 0 6 20 66 TEMPERATURE RECORDS LOWEST(C) -5.4 -5.4 -3.2 4.0 10.2 12.6 16.0 13.6 10.0 1.8 -7.0 -3.6 -7.0 DAY 25 26 7 8 11 1 27 9 23 28 28 19 MAXIMUM AIR TEMPERATURE (C) 16.1 15.4 19.1 24.7 29.9 35.6 40.2 37.5 33.5 26.6 22.3 11.3 26.0 DAYS WITH MAXIMUM TEMP. >=30 0 0 0 0 16 28 31 31 29 13 0 0 148 DAYS WITH MAXIMUM TEMP. <= 0 0 0 0 0 0 0 0 0 0 0 0 0 0 TEMPERATURE RECORDS HIGHEST(C) 22.6 21.6 27.6 29.8 35.2 40.5 43.0 39.6 36.4 33.2 27.2 18.2 43.0 DAY 17 22 25 19 7 22 9 23 9 5 3 2 DIF. BETWEEN (MAX.-MIN.) (C) 16.6 13.8 14.2 13.9 15.8 16.7 17.8 19.1 18.7 17.4 19.0 11.3 16.2 MEAN DAILY TEMP. (MDT) (C) 7.8 8.5 12.0 17.7 22.0 27.2 31.3 27.9 24.2 17.9 12.8 5.7 17.9 COOLING DEG. DAYS(BASE 21 0C) 0.0 0.0 0.0 4.8 41.2 188.9 319.8 215.1 96.6 19.4 0.0 0.0 885.9 HEATING DEG. DAYS(BASE 18 0C) 315.8 266.7 187.2 38.3 0.0 0.0 0.0 0.0 0.0 60.8 156.0 382.4 1407.2 DEWPOINT (MEAN C) -5.2 -4.6 -4.3 1.2 0.9 4.5 2.6 -3.7 -3.1 -0.2 -7.5 -1.4 -1.7 MIXING RATIO (G/KG) 3.20 3.51 3.87 5.18 5.24 6.44 5.60 3.59 3.68 4.58 2.78 4.18 4.32 VAPOUR PRESSURE (HPA) 4.41 4.82 5.29 7.07 7.16 8.75 7.58 4.90 5.05 6.29 3.83 5.75 5.91 SATURATION DEF. (HPA) 7.09 6.89 9.70 14.61 21.69 31.39 43.38 37.46 27.89 15.98 12.29 3.40 19.31 RELATIVE HUMIDITY (MEAN %) 44 44 39 38 29 26 17 14 18 35 27 67 33 RELATIVE HUMIDITY (MAX. %) 67 65 59 62 46 42 27 25 31 56 43 85 51 RELATIVE HUMIDITY (MIN. %) 23 25 22 21 15 14 10 6 9 18 13 46 19 RELATIVE HUMIDITY (MEAN% 03UTC) 62 57 55 52 42 39 26 23 30 50 42 80 47 RELATIVE HUMIDITY (MEAN% 09UTC) 29 31 26 25 18 17 11 7 11 22 15 56 22 RELATIVE HUMIDITY (MEAN% 15UTC) 34 35 30 29 23 17 12 8 13 27 21 60 26 RH=0 => RELATIVE HUMIDITY < 0.5% AMOUNT OF PRECIPITATION MM. 14.4 20.4 25.4 13.5 32.4 1.0 0.0 0.0 0.0 15.0 0.0 22.5 144.6 DAYS WITH PRECIPITATION >=10 0 1 0 0 2 0 0 0 0 1 0 1 5 DAYS WITH PRECIPITATION >= 5 1 2 3 1 2 0 0 0 0 1 0 1 11 DAYS WITH PRECIPITATION >= 1 3 4 4 5 2 0 0 0 0 1 0 5 24 DAYS WITH PRECIPITATION 3 5 5 7 3 3 0 0 0 1 0 7 34 GREATEST DAILY PRECIPITATION 7.4 10.0 7.4 7.0 21.2 0.7 0.0 0.0 0.0 15.0 0.0 13.0 21.2 DAY 13 6 21 24 29 3 ** ** ** 22 ** 6 DAY WITH THUNDER STORM 0 0 0 0 2 1 0 0 0 0 0 0 3 DAYS WITH SNOW OR SLEET 0 0 0 0 0 0 0 0 0 0 0 0 0 DAYS WITH DUST 0 0 2 0 1 2 3 0 1 0 0 0 9 WIND DIRECTION (PREVAILING) 225 225 225 225 315 45 360 360 225 225 225 270 225 PREVAILING WIND SPEED(KNOTS) 11.1 9.7 9.2 8.8 8.9 5.9 7.7 8.1 7.1 5.8 7.5 5.5 8.0 PREVAILING WIND PERCENT 12.1 11.6 17.7 19.6 14.1 10.0 10.9 19.4 11.7 8.1 9.2 5.2 10.9 CALMS PERCENT OF WIND 74.6 58.5 56.9 45.8 42.3 50.4 52.0 51.0 63.3 71.0 75.4 76.2 59.8 NO. OF WIND OBSERVATION 248 224 248 240 248 240 248 247 240 248 240 248 2919 VECTOR WIND DIRECTION (MEAN) 228 220 237 228 316 309 333 360 330 265 229 291 272 VECTOR WIND MAGNITUDE(KNOTS) 2.0 1.9 1.8 2.1 2.2 1.2 1.2 2.2 0.5 0.6 1.1 0.6 0.9 WIND STEADINESES (MEAN %) 83.3 54.3 52.9 51.2 51.2 36.4 36.4 64.7 20.0 35.3 57.9 37.5 30.0 WIND SPEED (MEAN KNOTS) 2.4 3.5 3.4 4.1 4.3 3.3 3.3 3.4 2.5 1.7 1.9 1.6 3.0 FASTEST WIND DIRECTION 190 190 210 210 210 320 330 360 360 270 190 180 190 FASTEST WIND SPEED (KNOTS) 21 17 16 19 19 19 14 19 16 14 16 16 21 DAY 22 6 17 24 25 2 4 8 1 13 24 4 DAYS WITH SKY CLEAR (0-2)/8 19 17 17 11 22 25 29 30 30 29 27 12 268 DAYS WITH P.CLOUDY (3-6)/8 10 6 9 13 9 5 2 1 0 1 3 11 70 DAYS WITH CLOUDY (7-8)/8 2 5 5 6 0 0 0 0 0 1 0 8 27 DAYS WITH VISIBILITY =< 2 KM 0 0 0 0 0 2 0 0 0 0 0 2 4 DURATION OF SUNSHINE HOURS 248.8 214.7 240.5 ****** ****** ****** ****** 366.4 318.0 307.3 291.5 164.9 ****** ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ANAR (40839) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 30 53 N LONGITUDE 55 15 E DATA PROCESSING CENTER ELEVATION 1408.8 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 862.1 859.5 858.6 858.0 858.7 853.9 849.7 854.0 857.6 861.5 861.8 862.4 858.2 MAX. QFE PRESSURE IN HPA 870.0 864.8 866.7 863.2 863.9 861.8 854.8 858.6 864.0 870.0 868.6 866.9 870.0 DAY-HOUR 7- 6 14- 6 3- 6 4- 6 28-18 1- 6 4- 6 25- 6 13- 6 27- 6 16- 6 10- 6 MIN. QFE PRESSURE IN HPA 855.4 851.8 851.8 852.0 852.5 848.0 844.7 849.4 854.0 856.0 853.5 856.9 844.7 DAY-HOUR 1- 9 23-12 18-12 24-15 10-15 22-15 16-15 8-12 19-12 13-12 26- 0 4-12 MEAN QNH PRESSURE IN HPA 1021.0 1018.1 1017.1 1016.3 1017.1 1011.7 1006.8 1011.8 1015.9 1020.4 1020.7 1021.4 1016.5 MAX. QNH PRESSURE IN HPA 1030.1 1024.1 1026.3 1022.3 1023.1 1020.7 1012.7 1017.0 1023.2 1030.1 1028.5 1026.6 1030.1 DAY-HOUR 7- 6 14- 6 3- 6 4- 6 28-18 1- 6 4- 6 25- 6 13- 6 27- 6 16- 6 10- 6 MIN. QNH PRESSURE IN HPA 1013.4 1009.2 1009.2 1009.5 1010.0 1004.9 1001.1 1006.5 1011.8 1014.0 1011.2 1015.1 1001.1 DAY-HOUR 1- 9 23-12 18-12 24-15 10-15 22-15 16-15 8-12 19-12 13-12 26- 0 4-12 MEAN QFF PRESSURE IN HPA 1019.8 1016.3 1013.2 1008.9 1007.2 998.7 991.6 998.7 1005.0 1013.3 1016.7 1021.7 1009.3 MAX. QFF PRESSURE IN HPA 1030.9 1025.8 1024.4 1017.0 1014.1 1013.4 999.4 1003.5 1012.1 1025.8 1029.2 1028.0 1030.9 DAY-HOUR 7- 6 26- 3 3- 6 1- 3 29-15 1- 6 27- 3 25- 3 23- 3 27- 6 28- 3 20- 6 MIN. QFF PRESSURE IN HPA 1009.1 1003.0 1002.0 1003.0 1000.7 990.0 985.6 993.3 999.4 1003.5 1004.4 1012.9 985.6 DAY-HOUR 1- 9 23-12 26-12 17-21 9-12 22-18 16-12 8-12 19-12 13-12 26- 0 6-12 PRESSURE AT HOUR 0000 UTC. MEAN QFE PRESSURE IN HPA 861.9 859.3 858.4 857.9 858.6 854.0 849.6 853.8 857.4 861.3 861.7 862.3 858.0 MAX. QFE PRESSURE IN HPA 867.0 863.4 863.9 860.8 862.9 860.0 853.7 857.0 861.8 868.0 866.0 865.9 868.0 DAY 8 14 3 1 27 1 29 25 22 27 16 11 MIN. QFE PRESSURE IN HPA 857.8 852.3 852.8 853.3 854.3 850.4 845.8 851.2 854.8 857.4 853.5 857.1 845.8 DAY 26 24 27 18 11 14 17 23 6 13 26 6 MEAN QNH PRESSURE IN HPA 1020.8 1017.9 1016.8 1016.2 1017.0 1011.7 1006.7 1011.5 1015.6 1020.1 1020.6 1021.2 1016.3 MAX. QNH PRESSURE IN HPA 1026.7 1022.5 1023.1 1019.6 1022.0 1018.6 1011.4 1015.2 1020.7 1027.8 1025.5 1025.4 1027.8 DAY 8 14 3 1 27 1 29 25 22 27 16 11 MIN. QNH PRESSURE IN HPA 1016.1 1009.8 1010.4 1010.9 1012.1 1007.6 1002.3 1008.5 1012.7 1015.7 1011.2 1015.3 1002.3 DAY 26 24 27 18 11 14 17 23 6 13 26 6 MEAN QFF PRESSURE IN HPA 1018.8 1015.7 1012.7 1008.7 1007.1 999.0 991.6 998.6 1004.4 1012.3 1015.8 1021.0 1008.8 MAX. QFF PRESSURE IN HPA 1027.4 1023.6 1021.3 1014.7 1012.8 1010.6 998.4 1002.5 1009.8 1023.2 1026.2 1026.8 1027.4 DAY 8 26 6 1 27 1 29 11 23 27 28 11 MIN. QFF PRESSURE IN HPA 1010.7 1004.4 1002.9 1003.1 1002.9 992.6 986.7 994.6 1000.1 1004.7 1004.4 1012.9 986.7 DAY 18 24 26 18 10 23 17 23 1 13 26 6 PRESSURE AT HOUR 0300 UTC. MEAN QFE PRESSURE IN HPA 862.7 860.0 859.2 858.9 859.7 855.3 850.7 854.9 858.6 862.4 862.7 863.0 859.0 MAX. QFE PRESSURE IN HPA 868.0 864.0 864.9 862.0 863.2 860.8 854.5 857.6 863.2 868.7 867.0 866.2 868.7 DAY 7 14 3 1 27 1 29 25 13 27 16 11 MIN. QFE PRESSURE IN HPA 858.2 853.9 853.0 854.6 855.8 852.2 846.8 852.0 855.6 858.0 855.0 858.5 846.8 DAY 1 24 27 25 11 14 17 8 5 13 26 4 MEAN QNH PRESSURE IN HPA 1021.7 1018.6 1017.7 1017.4 1018.3 1013.2 1008.0 1012.7 1017.0 1021.4 1021.7 1022.0 1017.5 MAX. QNH PRESSURE IN HPA 1027.8 1023.2 1024.3 1020.9 1022.3 1019.6 1012.3 1015.9 1022.3 1028.6 1026.7 1025.7 1028.6 DAY 7 14 3 1 27 1 29 25 13 27 16 11 MIN. QNH PRESSURE IN HPA 1016.6 1011.6 1010.6 1012.4 1013.8 1009.7 1003.5 1009.5 1013.6 1016.3 1012.9 1016.9 1003.5 DAY 1 24 27 25 11 14 17 8 5 13 26 4 MEAN QFF PRESSURE IN HPA 1021.4 1017.6 1014.9 1010.7 1008.8 1000.7 993.4 1000.4 1007.2 1015.5 1019.2 1023.1 1011.1 MAX. QFF PRESSURE IN HPA 1029.2 1025.8 1023.7 1017.0 1013.2 1012.9 999.4 1003.5 1012.1 1025.3 1029.2 1027.8 1029.2 DAY 7 26 3 1 27 1 27 25 23 27 28 20 MIN. QFF PRESSURE IN HPA 1011.9 1008.5 1005.1 1005.7 1004.8 995.0 988.4 996.1 1002.8 1007.4 1008.6 1015.9 988.4 DAY 1 24 27 18 11 17 12 8 19 13 26 6 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ANAR (40839) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 30 53 N LONGITUDE 55 15 E DATA PROCESSING CENTER ELEVATION 1408.8 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 863.9 861.0 860.3 859.6 860.2 855.8 851.2 855.6 859.4 863.6 863.8 864.1 859.9 MAX. QFE PRESSURE IN HPA 870.0 864.8 866.7 863.2 863.5 861.8 854.8 858.6 864.0 870.0 868.6 866.9 870.0 DAY 7 14 3 4 27 1 4 25 13 27 16 10 MIN. QFE PRESSURE IN HPA 858.1 855.8 853.1 855.0 856.7 852.2 848.0 852.2 856.2 858.6 857.2 858.7 848.0 DAY 1 24 27 24 10 14 16 8 5 13 26 4 MEAN QNH PRESSURE IN HPA 1023.1 1019.8 1019.0 1018.2 1018.9 1013.8 1008.5 1013.6 1018.0 1022.8 1023.0 1023.3 1018.5 MAX. QNH PRESSURE IN HPA 1030.1 1024.1 1026.3 1022.3 1022.6 1020.7 1012.7 1017.0 1023.2 1030.1 1028.5 1026.6 1030.1 DAY 7 14 3 4 27 1 4 25 13 27 16 10 MIN. QNH PRESSURE IN HPA 1016.5 1013.8 1010.7 1012.9 1014.8 1009.7 1004.9 1009.7 1014.3 1017.0 1015.4 1017.1 1004.9 DAY 1 24 27 24 10 14 16 8 5 13 26 4 MEAN QFF PRESSURE IN HPA 1022.2 1018.2 1015.1 1010.7 1008.7 1000.8 993.1 999.8 1007.1 1015.9 1019.3 1023.9 1011.2 MAX. QFF PRESSURE IN HPA 1030.9 1024.4 1024.4 1016.2 1013.1 1013.4 998.8 1003.2 1012.0 1025.8 1028.3 1028.0 1030.9 DAY 7 26 3 1 26 1 28 11 22 27 28 20 MIN. QFF PRESSURE IN HPA 1011.8 1008.0 1004.3 1006.3 1004.6 994.5 988.7 995.2 1001.9 1006.7 1011.1 1015.6 988.7 DAY 1 23 27 15 6 22 16 8 1 13 26 4 PRESSURE AT HOUR 0900 UTC. MEAN QFE PRESSURE IN HPA 862.1 859.6 858.9 858.4 858.9 854.6 850.1 854.5 857.9 861.7 861.7 862.4 858.4 MAX. QFE PRESSURE IN HPA 868.4 864.2 865.3 861.8 862.2 861.0 853.8 857.8 862.4 867.6 867.1 865.7 868.4 DAY 7 14 3 12 26 1 28 25 13 27 16 10 MIN. QFE PRESSURE IN HPA 855.4 854.3 853.1 854.2 855.1 850.6 847.1 851.4 855.4 857.4 856.1 857.7 847.1 DAY 1 23 27 16 10 22 16 3 5 13 26 4 MEAN QNH PRESSURE IN HPA 1021.1 1018.2 1017.4 1016.8 1017.3 1012.4 1007.2 1012.3 1016.2 1020.6 1020.6 1021.4 1016.8 MAX. QNH PRESSURE IN HPA 1028.3 1023.5 1024.7 1020.7 1021.2 1019.8 1011.5 1016.1 1021.4 1027.4 1026.8 1025.2 1028.3 DAY 7 14 3 12 26 1 28 25 13 27 16 10 MIN. QNH PRESSURE IN HPA 1013.4 1012.1 1010.7 1012.0 1013.0 1007.8 1003.8 1008.8 1013.4 1015.7 1014.2 1016.0 1003.8 DAY 1 23 27 16 10 22 16 3 5 13 26 4 MEAN QFF PRESSURE IN HPA 1019.2 1015.9 1013.1 1009.0 1007.1 999.2 991.8 998.9 1004.6 1012.6 1015.7 1021.2 1009.0 MAX. QFF PRESSURE IN HPA 1028.2 1022.6 1022.8 1015.2 1011.0 1011.6 999.0 1002.9 1010.0 1022.4 1024.5 1025.7 1028.2 DAY 7 14 3 1 26 1 28 25 22 27 28 20 MIN. QFF PRESSURE IN HPA 1009.1 1005.2 1003.0 1005.1 1002.2 993.0 987.6 993.8 1000.5 1004.6 1009.1 1013.9 987.6 DAY 1 23 26 16 9 22 12 8 19 13 12 6 PRESSURE AT HOUR 1200 UTC. MEAN QFE PRESSURE IN HPA 860.7 858.0 857.3 856.7 857.3 852.9 848.5 852.9 856.3 860.2 860.3 861.0 856.8 MAX. QFE PRESSURE IN HPA 867.0 862.0 863.3 859.8 861.6 859.8 852.6 855.8 860.8 866.1 865.5 864.9 867.0 DAY 7 14 3 12 26 1 28 25 13 26 16 10 MIN. QFE PRESSURE IN HPA 856.6 851.8 851.8 852.3 852.8 848.4 845.0 849.4 854.0 856.0 855.4 856.9 845.0 DAY 22 23 18 16 10 22 16 8 19 13 26 4 MEAN QNH PRESSURE IN HPA 1019.4 1016.3 1015.5 1014.9 1015.6 1010.5 1005.5 1010.5 1014.4 1018.8 1019.0 1019.8 1015.0 MAX. QNH PRESSURE IN HPA 1026.7 1020.9 1022.4 1018.4 1020.5 1018.4 1010.1 1013.8 1019.6 1025.6 1024.9 1024.3 1026.7 DAY 7 14 3 12 26 1 28 25 13 26 16 10 MIN. QNH PRESSURE IN HPA 1014.7 1009.2 1009.2 1009.8 1010.4 1005.3 1001.4 1006.5 1011.8 1014.0 1013.4 1015.1 1001.4 DAY 22 23 18 16 10 22 16 8 19 13 26 4 MEAN QFF PRESSURE IN HPA 1017.4 1014.2 1011.4 1007.4 1005.8 997.7 990.4 997.6 1003.2 1011.1 1014.2 1019.5 1007.5 MAX. QFF PRESSURE IN HPA 1027.2 1020.4 1020.3 1012.7 1010.9 1010.2 997.6 1000.9 1009.3 1020.9 1023.3 1024.5 1027.2 DAY 7 14 3 1 26 1 28 25 22 27 27 10 MIN. QFF PRESSURE IN HPA 1009.3 1003.0 1002.0 1003.3 1000.7 990.6 985.6 993.3 999.4 1003.5 1008.2 1012.9 985.6 DAY 17 23 26 16 9 22 16 8 19 13 6 6 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ANAR (40839) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 30 53 N LONGITUDE 55 15 E DATA PROCESSING CENTER ELEVATION 1408.8 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 861.3 858.7 857.7 856.7 857.5 852.3 848.2 852.8 856.3 860.5 861.0 861.7 857.1 MAX. QFE PRESSURE IN HPA 867.8 862.0 863.4 861.0 862.5 859.1 852.0 856.0 860.8 866.7 865.7 865.4 867.8 DAY 7 14 3 12 28 1 28 25 13 26 16 10 MIN. QFE PRESSURE IN HPA 857.8 852.4 852.2 852.0 852.5 848.0 844.7 850.0 854.2 856.0 855.8 857.4 844.7 DAY 11 23 18 24 10 22 16 3 4 13 25 4 MEAN QNH PRESSURE IN HPA 1020.2 1017.2 1015.9 1014.9 1015.8 1009.8 1005.1 1010.4 1014.4 1019.2 1019.8 1020.6 1015.3 MAX. QNH PRESSURE IN HPA 1027.6 1020.9 1022.5 1019.8 1021.5 1017.6 1009.5 1014.0 1019.6 1026.3 1025.2 1024.8 1027.6 DAY 7 14 3 12 28 1 28 25 13 26 16 10 MIN. QNH PRESSURE IN HPA 1016.1 1009.9 1009.7 1009.5 1010.0 1004.9 1001.1 1007.2 1012.0 1014.0 1013.8 1015.7 1001.1 DAY 11 23 18 24 10 22 16 3 4 13 25 4 MEAN QFF PRESSURE IN HPA 1019.8 1016.1 1013.0 1008.1 1006.4 997.1 990.5 998.0 1004.6 1013.2 1017.2 1021.6 1008.8 MAX. QFF PRESSURE IN HPA 1029.5 1021.3 1022.2 1012.6 1014.1 1008.9 996.6 1002.0 1010.2 1023.5 1027.5 1026.3 1029.5 DAY 7 14 3 1 29 1 27 25 22 27 27 20 MIN. QFF PRESSURE IN HPA 1012.1 1005.2 1002.4 1003.6 1001.3 990.8 986.2 993.9 1000.5 1004.9 1010.6 1013.8 986.2 DAY 17 23 26 16 10 22 16 22 18 13 25 4 PRESSURE AT HOUR 1800 UTC. MEAN QFE PRESSURE IN HPA 862.3 859.7 858.7 857.8 858.8 853.3 849.3 853.9 857.4 861.4 861.8 862.6 858.1 MAX. QFE PRESSURE IN HPA 868.4 863.2 863.9 861.5 863.9 860.4 853.8 857.0 861.6 868.0 866.3 866.1 868.4 DAY 7 1 3 13 28 1 31 25 13 26 16 10 MIN. QFE PRESSURE IN HPA 858.4 852.8 853.6 852.4 853.8 849.0 845.5 851.1 855.0 856.8 854.8 858.3 845.5 DAY 25 23 26 24 10 22 16 22 4 12 25 4 MEAN QNH PRESSURE IN HPA 1021.2 1018.3 1017.2 1016.1 1017.2 1010.9 1006.3 1011.7 1015.6 1020.3 1020.7 1021.6 1016.4 MAX. QNH PRESSURE IN HPA 1028.3 1022.3 1023.1 1020.4 1023.1 1019.1 1011.5 1015.2 1020.5 1027.8 1025.9 1025.6 1028.3 DAY 7 1 3 13 28 1 31 25 13 26 16 10 MIN. QNH PRESSURE IN HPA 1016.8 1010.4 1011.3 1009.9 1011.5 1006.0 1002.0 1008.4 1012.9 1015.0 1012.7 1016.7 1002.0 DAY 25 23 26 24 10 22 16 22 4 12 25 4 MEAN QFF PRESSURE IN HPA 1020.3 1016.7 1013.2 1008.5 1007.0 997.7 990.9 997.9 1004.7 1013.4 1017.1 1022.1 1009.1 MAX. QFF PRESSURE IN HPA 1029.7 1022.1 1021.6 1013.0 1014.1 1010.4 998.3 1001.8 1010.8 1023.2 1026.1 1026.4 1029.7 DAY 7 25 3 7 28 1 31 11 22 27 27 10 MIN. QFF PRESSURE IN HPA 1012.5 1004.5 1003.4 1004.0 1002.3 990.0 985.6 994.5 1001.2 1004.7 1008.1 1013.8 985.6 DAY 17 23 26 24 10 22 11 3 18 12 25 4 PRESSURE AT HOUR 2100 UTC. MEAN QFE PRESSURE IN HPA 862.1 859.7 858.8 857.9 858.7 853.4 849.7 854.1 857.5 861.4 861.7 862.5 858.1 MAX. QFE PRESSURE IN HPA 867.8 863.2 864.4 861.4 863.8 860.0 853.8 857.4 861.6 867.8 866.0 866.1 867.8 DAY 7 13 3 11 26 1 31 24 13 26 15 10 MIN. QFE PRESSURE IN HPA 857.8 852.4 853.0 853.0 853.9 849.0 845.8 851.4 854.8 857.2 854.0 858.7 845.8 DAY 25 23 26 24 10 30 16 3 4 12 25 5 MEAN QNH PRESSURE IN HPA 1021.0 1018.3 1017.2 1016.2 1017.2 1011.1 1006.8 1011.8 1015.8 1020.2 1020.6 1021.5 1016.5 MAX. QNH PRESSURE IN HPA 1027.6 1022.3 1023.7 1020.2 1023.0 1018.6 1011.5 1015.7 1020.5 1027.6 1025.5 1025.6 1027.6 DAY 7 13 3 11 26 1 31 24 13 26 15 10 MIN. QNH PRESSURE IN HPA 1016.1 1009.9 1010.6 1010.6 1011.6 1006.0 1002.3 1008.8 1012.7 1015.4 1011.8 1017.1 1002.3 DAY 25 23 26 24 10 30 16 3 4 12 25 5 MEAN QFF PRESSURE IN HPA 1019.2 1016.0 1012.8 1008.3 1006.8 997.7 991.4 998.3 1004.2 1012.3 1015.7 1021.3 1008.7 MAX. QFF PRESSURE IN HPA 1028.0 1022.3 1021.7 1012.9 1013.3 1009.4 998.4 1002.0 1010.6 1022.6 1026.4 1026.1 1028.0 DAY 7 14 3 7 26 1 28 10 22 26 27 10 MIN. QFF PRESSURE IN HPA 1010.9 1003.6 1002.8 1003.0 1001.4 990.2 986.2 994.5 1000.1 1004.1 1005.0 1015.2 986.2 DAY 17 23 26 17 9 22 11 22 18 12 25 5 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ANAR (40839) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 30 53 N LONGITUDE 55 15 E DATA PROCESSING CENTER ELEVATION 1408.8 M MEANS AND EXTREMES FOR THE YEAR 1996 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AIR TEMPERATURE (C) 3.2 9.9 12.5 18.5 23.5 28.9 29.1 30.5 28.5 20.3 11.9 9.9 18.9 MINIMUN AIR TEMPERATURE (C) -2.1 3.7 6.5 11.0 14.9 19.8 19.6 17.6 14.5 7.4 1.4 -1.4 9.4 DAYS WITH MINIMUM TEMP. >=21 0 0 0 0 0 14 8 1 0 0 0 0 23 DAYS WITH MINIMUM TEMP. <=-4 7 0 0 0 0 0 0 0 0 0 1 8 16 DAYS WITH FREEZING MIN.<= 0 21 7 0 0 0 0 0 0 0 2 12 22 64 TEMPERATURE RECORDS LOWEST(C) -16.8 -3.4 2.0 1.6 9.0 14.4 16.0 14.0 11.0 -0.4 -4.4 -7.0 -16.8 DAY 16 25 6 6 1 18 17 31 29 23 19 4 MAXIMUM AIR TEMPERATURE (C) 9.3 17.0 19.1 25.9 31.2 36.6 35.4 36.0 35.2 27.3 18.1 17.2 25.7 DAYS WITH MAXIMUM TEMP. >=30 0 0 0 3 16 30 31 31 30 6 0 0 147 DAYS WITH MAXIMUM TEMP. <= 0 5 0 0 0 0 0 0 0 0 0 0 0 5 TEMPERATURE RECORDS HIGHEST(C) 18.6 24.0 26.6 30.8 38.0 40.6 39.4 38.6 38.6 32.0 26.0 23.4 40.6 DAY 7 9 31 23 31 9 9 25 8 30 7 29 DIF. BETWEEN (MAX.-MIN.) (C) 11.4 13.3 12.6 14.9 16.3 16.8 15.8 18.4 20.7 19.9 16.7 18.6 16.3 MEAN DAILY TEMP. (MDT) (C) 3.6 10.4 12.8 18.4 23.1 28.2 27.5 26.8 24.8 17.4 9.8 7.9 17.6 COOLING DEG. DAYS(BASE 21 0C) 0.0 0.0 0.0 11.1 74.1 216.5 202.2 179.3 115.3 0.7 0.0 0.0 799.3 HEATING DEG. DAYS(BASE 18 0C) 447.0 221.4 162.4 36.4 0.0 0.0 0.0 0.0 0.0 47.0 246.2 312.9 1473.2 DEWPOINT (MEAN C) -3.7 -2.1 0.9 -0.8 3.2 0.9 2.9 0.9 0.8 -3.3 -5.9 -7.9 -1.2 MIXING RATIO (G/KG) 3.49 4.02 5.01 4.51 5.89 5.21 5.61 4.90 4.83 3.74 3.05 2.61 4.41 VAPOUR PRESSURE (HPA) 4.81 5.51 6.84 6.18 8.05 7.08 7.64 6.68 6.61 5.14 4.21 3.60 6.03 SATURATION DEF. (HPA) 3.63 7.42 8.32 16.52 22.66 34.88 34.35 39.04 34.96 20.53 10.93 9.65 20.24 RELATIVE HUMIDITY (MEAN %) 66 49 50 31 32 19 20 17 18 23 32 32 32 RELATIVE HUMIDITY (MAX. %) 83 72 75 51 53 30 31 30 31 39 56 54 50 RELATIVE HUMIDITY (MIN. %) 47 28 28 17 15 10 13 10 12 14 19 19 19 RELATIVE HUMIDITY (MEAN% 03UTC) 78 66 69 47 47 28 30 30 31 39 55 52 48 RELATIVE HUMIDITY (MEAN% 09UTC) 54 33 38 22 19 12 14 12 14 17 24 23 24 RELATIVE HUMIDITY (MEAN% 15UTC) 59 40 38 22 23 13 16 13 16 21 27 28 26 RH=0 => RELATIVE HUMIDITY < 0.5% AMOUNT OF PRECIPITATION MM. 23.8 11.2 29.0 14.0 10.0 0.0 0.0 0.0 0.0 0.0 2.0 0.4 90.4 DAYS WITH PRECIPITATION >=10 1 0 0 1 0 0 0 0 0 0 0 0 2 DAYS WITH PRECIPITATION >= 5 2 0 2 1 0 0 0 0 0 0 0 0 5 DAYS WITH PRECIPITATION >= 1 4 5 8 2 3 0 0 0 0 0 1 0 23 DAYS WITH PRECIPITATION 5 7 10 2 8 0 0 0 0 0 1 1 34 GREATEST DAILY PRECIPITATION 12.0 3.0 7.0 11.0 4.0 0.0 0.0 0.0 0.0 0.0 2.0 0.4 12.0 DAY 12 12 13 16 8 ** ** ** ** ** 29 15 DAY WITH THUNDER STORM 0 1 0 1 5 0 0 0 0 0 0 0 7 DAYS WITH SNOW OR SLEET 5 0 0 0 1 0 0 0 0 0 0 0 6 DAYS WITH DUST 0 3 1 2 0 0 1 1 4 0 0 1 13 WIND DIRECTION (PREVAILING) 225 225 180 225 360 360 360 360 360 45 45 225 360 PREVAILING WIND SPEED(KNOTS) 6.9 11.8 10.2 9.3 7.1 6.8 8.3 8.7 6.8 7.1 6.1 9.9 7.7 PREVAILING WIND PERCENT 8.1 18.1 13.3 18.3 10.5 14.2 31.5 23.2 10.0 5.8 11.3 5.8 9.6 CALMS PERCENT OF WIND 70.6 43.5 42.7 41.3 56.0 50.4 37.0 46.5 75.3 74.8 80.0 79.4 56.0 NO. OF WIND OBSERVATION 248 232 248 240 248 240 216 155 150 155 150 155 2437 VECTOR WIND DIRECTION (MEAN) 253 225 223 248 315 321 4 13 360 280 11 217 303 VECTOR WIND MAGNITUDE(KNOTS) 1.0 2.7 2.4 1.9 1.3 1.0 3.4 3.3 1.0 0.7 1.0 0.9 0.8 WIND STEADINESES (MEAN %) 47.6 50.9 48.0 39.6 40.6 29.4 70.8 78.6 62.5 31.8 76.9 52.9 24.2 WIND SPEED (MEAN KNOTS) 2.1 5.3 5.0 4.8 3.2 3.4 4.8 4.2 1.6 2.2 1.3 1.7 3.3 FASTEST WIND DIRECTION 180 210 190 210 330 190 250 250 360 220 360 280 330 FASTEST WIND SPEED (KNOTS) 16 27 27 25 29 17 19 14 10 19 12 27 29 DAY 6 11 3 15 8 9 7 19 1 17 12 15 DAYS WITH SKY CLEAR (0-2)/8 12 11 5 14 17 24 26 31 30 30 18 24 242 DAYS WITH P.CLOUDY (3-6)/8 11 12 19 11 12 6 5 0 0 1 9 5 91 DAYS WITH CLOUDY (7-8)/8 8 6 7 5 2 0 0 0 0 0 3 2 33 DAYS WITH VISIBILITY =< 2 KM 5 0 0 1 0 0 0 0 0 0 0 1 7 DURATION OF SUNSHINE HOURS 187.7 182.5 203.7 269.0 292.9 328.0 352.1 359.7 319.5 312.4 244.0 260.9 3312.4 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ANAR (40839) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 30 53 N LONGITUDE 55 15 E DATA PROCESSING CENTER ELEVATION 1408.8 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 861.5 858.5 856.6 858.6 858.2 854.3 854.8 855.6 856.8 861.6 864.2 863.7 858.7 MAX. QFE PRESSURE IN HPA 868.6 865.4 863.6 864.0 864.6 859.0 861.0 862.0 865.2 868.2 874.2 870.2 874.2 DAY-HOUR 26- 6 9- 0 29- 6 7- 6 7-21 3- 6 3- 6 30- 6 25- 6 20- 6 19- 6 4- 6 MIN. QFE PRESSURE IN HPA 854.8 849.7 851.2 851.8 851.6 849.2 849.6 849.8 848.4 853.6 857.0 858.0 848.4 DAY-HOUR 12-12 5- 9 14-12 10-12 29-15 19-15 6-15 8-15 20-12 6-12 28-12 15- 9 MEAN QNH PRESSURE IN HPA 1020.3 1016.9 1014.7 1017.0 1016.5 1012.0 1012.7 1013.6 1014.9 1020.4 1023.4 1022.9 1017.1 MAX. QNH PRESSURE IN HPA 1028.5 1024.8 1022.8 1023.2 1023.9 1017.5 1019.8 1020.9 1024.6 1028.0 1034.9 1030.3 1034.9 DAY-HOUR 26- 6 9- 0 29- 6 7- 6 7-21 3- 6 3- 6 30- 6 25- 6 20- 6 19- 6 4- 6 MIN. QNH PRESSURE IN HPA 1012.7 1006.8 1008.5 1009.2 1009.0 1006.2 1006.7 1006.9 1005.3 1011.3 1015.2 1016.3 1005.3 DAY-HOUR 12-12 5- 9 14-12 10-12 29-15 19-15 6-15 8-15 20-12 6-12 28-12 15- 9 MEAN QFF PRESSURE IN HPA 1022.0 1014.2 1010.4 1009.4 1006.1 998.7 999.6 ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA 1034.0 1025.4 1020.1 1020.5 1014.6 1003.9 1006.8 ****** ****** ****** ****** ****** ****** DAY-HOUR 16- 3 24- 6 29- 6 7- 3 8- 3 3- 6 4- 3 **-** **-** **-** **-** **-** MIN. QFF PRESSURE IN HPA 1010.8 1002.8 1001.5 999.8 996.3 992.7 993.1 ****** ****** ****** ****** ****** ****** DAY-HOUR 6-21 5- 9 19-12 10-12 29-21 10-15 11-15 **-** **-** **-** **-** **-** PRESSURE AT HOUR 0000 UTC. MEAN QFE PRESSURE IN HPA 861.2 858.5 856.3 858.2 858.2 854.3 854.8 ****** ****** ****** ****** ****** ****** MAX. QFE PRESSURE IN HPA 866.0 865.4 860.3 862.0 862.1 856.5 859.6 ****** ****** ****** ****** ****** ****** DAY 26 9 29 7 8 1 4 ** ** ** ** ** MIN. QFE PRESSURE IN HPA 855.4 853.0 852.6 854.1 853.1 850.7 850.6 ****** ****** ****** ****** ****** ****** DAY 13 22 14 11 30 20 7 ** ** ** ** ** MEAN QNH PRESSURE IN HPA 1020.0 1016.9 1014.3 1016.6 1016.5 1012.0 1012.7 ****** ****** ****** ****** ****** ****** MAX. QNH PRESSURE IN HPA 1025.5 1024.8 1019.0 1020.9 1021.0 1014.6 1018.2 ****** ****** ****** ****** ****** ****** DAY 26 9 29 7 8 1 4 ** ** ** ** ** MIN. QNH PRESSURE IN HPA 1013.4 1010.6 1010.1 1011.9 1010.7 1008.0 1007.8 ****** ****** ****** ****** ****** ****** DAY 13 22 14 11 30 20 7 ** ** ** ** ** MEAN QFF PRESSURE IN HPA 1021.2 1013.7 1009.8 1008.8 1006.2 998.7 999.7 ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA 1029.8 1023.0 1016.1 1018.6 1011.6 1002.2 1005.3 ****** ****** ****** ****** ****** ****** DAY 15 24 30 7 1 18 4 ** ** ** ** ** MIN. QFF PRESSURE IN HPA 1012.8 1005.7 1004.8 1003.1 998.1 995.2 994.2 ****** ****** ****** ****** ****** ****** DAY 7 22 26 11 30 26 12 ** ** ** ** ** PRESSURE AT HOUR 0300 UTC. MEAN QFE PRESSURE IN HPA 861.7 858.9 857.3 859.4 859.2 855.4 855.8 856.6 857.7 862.5 864.8 864.2 859.5 MAX. QFE PRESSURE IN HPA 866.8 863.6 862.3 863.1 862.9 858.2 860.5 861.6 863.4 867.4 873.2 868.7 873.2 DAY 27 9 29 7 8 3 4 30 25 20 19 4 MIN. QFE PRESSURE IN HPA 856.0 851.4 852.8 855.0 855.0 852.0 851.8 853.2 852.8 856.8 859.6 859.0 851.4 DAY 12 5 14 11 29 25 7 9 20 6 29 15 MEAN QNH PRESSURE IN HPA 1020.6 1017.3 1015.6 1017.9 1017.8 1013.4 1013.8 1014.7 1016.0 1021.5 1024.2 1023.5 1018.0 MAX. QNH PRESSURE IN HPA 1026.4 1022.8 1021.3 1022.2 1022.0 1016.6 1019.2 1020.5 1022.5 1027.1 1033.8 1028.6 1033.8 DAY 27 9 29 7 8 3 4 30 25 20 19 4 MIN. QNH PRESSURE IN HPA 1014.0 1008.8 1010.4 1012.9 1012.9 1009.5 1009.2 1010.8 1010.4 1015.0 1018.2 1017.5 1008.8 DAY 12 5 14 11 29 25 7 9 20 6 29 15 MEAN QFF PRESSURE IN HPA 1022.9 1015.5 1012.0 1010.9 1008.0 1000.5 1001.2 1002.8 1005.8 1016.0 1023.3 1023.9 1011.9 MAX. QFF PRESSURE IN HPA 1034.0 1024.9 1018.7 1020.5 1014.6 1003.6 1006.8 1010.1 1013.8 1025.3 1037.0 1032.7 1037.0 DAY 16 24 29 7 8 8 4 31 26 20 19 4 MIN. QFF PRESSURE IN HPA 1013.7 1006.3 1007.0 1005.8 1000.3 996.0 996.6 998.5 1000.2 1008.9 1015.0 1012.4 996.0 DAY 7 5 26 25 29 25 12 9 20 6 29 15 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ANAR (40839) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 30 53 N LONGITUDE 55 15 E DATA PROCESSING CENTER ELEVATION 1408.8 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 863.1 860.0 858.2 860.3 859.8 856.0 856.2 857.1 858.6 863.5 866.1 865.6 860.4 MAX. QFE PRESSURE IN HPA 868.6 865.4 863.6 864.0 863.0 859.0 861.0 862.0 865.2 868.2 874.2 870.2 874.2 DAY 26 24 29 7 7 3 3 30 25 20 19 4 MIN. QFE PRESSURE IN HPA 856.7 851.4 854.0 856.1 855.4 853.0 852.7 853.4 853.2 857.6 860.8 859.2 851.4 DAY 12 5 14 10 29 25 7 8 20 5 29 15 MEAN QNH PRESSURE IN HPA 1022.2 1018.7 1016.6 1019.0 1018.4 1014.0 1014.3 1015.3 1017.0 1022.6 1025.6 1025.0 1019.1 MAX. QNH PRESSURE IN HPA 1028.5 1024.8 1022.8 1023.2 1022.1 1017.5 1019.8 1020.9 1024.6 1028.0 1034.9 1030.3 1034.9 DAY 26 24 29 7 7 3 3 30 25 20 19 4 MIN. QNH PRESSURE IN HPA 1014.8 1008.8 1011.8 1014.2 1013.4 1010.6 1010.3 1011.1 1010.8 1015.9 1019.6 1017.7 1008.8 DAY 12 5 14 10 29 25 7 8 20 5 29 15 MEAN QFF PRESSURE IN HPA 1024.3 1016.4 1012.5 1011.4 1007.8 1000.5 1000.9 ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA 1033.4 1025.4 1020.1 1019.8 1012.9 1003.9 1006.1 ****** ****** ****** ****** ****** ****** DAY 16 24 29 5 7 3 3 ** ** ** ** ** MIN. QFF PRESSURE IN HPA 1015.8 1005.4 1007.0 1004.7 999.6 996.7 996.6 ****** ****** ****** ****** ****** ****** DAY 7 5 26 10 29 25 11 ** ** ** ** ** PRESSURE AT HOUR 0900 UTC. MEAN QFE PRESSURE IN HPA 861.6 858.5 856.8 859.0 858.5 854.7 855.2 855.9 857.2 861.6 864.1 863.8 858.9 MAX. QFE PRESSURE IN HPA 866.8 863.4 862.0 862.8 861.8 858.1 860.7 861.0 864.2 866.6 872.0 868.2 872.0 DAY 26 24 29 7 3 3 3 30 25 19 18 8 MIN. QFE PRESSURE IN HPA 855.8 849.7 852.6 854.4 853.7 852.2 850.9 851.8 850.8 855.4 859.4 858.0 849.7 DAY 12 5 14 10 29 25 7 8 20 6 28 15 MEAN QNH PRESSURE IN HPA 1020.5 1017.0 1015.0 1017.5 1016.9 1012.5 1013.1 1013.9 1015.4 1020.5 1023.4 1022.9 1017.4 MAX. QNH PRESSURE IN HPA 1026.4 1022.5 1020.9 1021.8 1020.7 1016.5 1019.4 1019.8 1023.5 1026.2 1032.4 1028.0 1032.4 DAY 26 24 29 7 3 3 3 30 25 19 18 8 MIN. QNH PRESSURE IN HPA 1013.8 1006.8 1010.1 1012.2 1011.4 1009.7 1008.2 1009.2 1008.1 1013.4 1017.9 1016.3 1006.8 DAY 12 5 14 10 29 25 7 8 20 6 28 15 MEAN QFF PRESSURE IN HPA 1021.7 1013.9 1010.3 1009.5 1006.2 998.9 1000.0 ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA 1029.3 1023.3 1017.8 1017.5 1012.4 1003.0 1006.4 ****** ****** ****** ****** ****** ****** DAY 16 24 29 7 9 17 3 ** ** ** ** ** MIN. QFF PRESSURE IN HPA 1012.9 1002.8 1004.5 1002.7 998.2 995.4 995.0 ****** ****** ****** ****** ****** ****** DAY 7 5 19 10 29 10 7 ** ** ** ** ** PRESSURE AT HOUR 1200 UTC. MEAN QFE PRESSURE IN HPA 860.4 857.0 855.4 857.3 856.6 853.1 853.6 854.4 855.3 860.0 862.6 862.3 857.3 MAX. QFE PRESSURE IN HPA 865.4 861.8 860.4 861.8 860.2 856.0 859.3 859.2 862.2 865.2 871.0 866.8 871.0 DAY 26 8 29 7 3 3 3 30 25 2 18 4 MIN. QFE PRESSURE IN HPA 854.8 849.9 851.2 851.8 851.9 850.2 849.8 850.2 848.4 853.6 857.0 858.4 848.4 DAY 12 5 14 10 29 19 7 8 20 6 28 15 MEAN QNH PRESSURE IN HPA 1019.1 1015.2 1013.3 1015.5 1014.8 1010.7 1011.3 1012.2 1013.2 1018.7 1021.7 1021.3 1015.6 MAX. QNH PRESSURE IN HPA 1024.8 1020.7 1019.1 1020.7 1018.9 1014.0 1017.8 1017.7 1021.2 1024.6 1031.3 1026.4 1031.3 DAY 26 8 29 7 3 3 3 30 25 2 18 4 MIN. QNH PRESSURE IN HPA 1012.7 1007.0 1008.5 1009.2 1009.3 1007.4 1006.9 1007.4 1005.3 1011.3 1015.2 1016.8 1005.3 DAY 12 5 14 10 29 19 7 8 20 6 28 15 MEAN QFF PRESSURE IN HPA 1020.2 1012.0 1008.7 1007.7 1004.5 997.5 998.7 ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA 1028.3 1021.2 1015.7 1016.8 1010.2 1001.0 1005.5 ****** ****** ****** ****** ****** ****** DAY 14 24 29 7 3 17 3 ** ** ** ** ** MIN. QFF PRESSURE IN HPA 1012.2 1003.9 1001.5 999.8 997.1 993.7 993.4 ****** ****** ****** ****** ****** ****** DAY 7 5 19 10 29 10 11 ** ** ** ** ** ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ANAR (40839) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 30 53 N LONGITUDE 55 15 E DATA PROCESSING CENTER ELEVATION 1408.8 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 860.9 857.6 855.7 857.4 856.9 852.8 853.4 854.2 855.1 860.3 863.2 862.8 857.5 MAX. QFE PRESSURE IN HPA 866.4 863.4 860.0 861.6 862.1 855.6 858.9 859.2 862.2 866.0 871.7 867.0 871.7 DAY 26 8 29 7 7 3 3 30 25 19 18 3 MIN. QFE PRESSURE IN HPA 855.0 851.6 852.0 852.5 851.6 849.2 849.6 849.8 848.4 854.2 858.0 860.0 848.4 DAY 12 5 13 3 29 19 6 8 20 6 28 15 MEAN QNH PRESSURE IN HPA 1019.7 1015.9 1013.7 1015.6 1015.0 1010.3 1011.0 1012.0 1013.0 1018.9 1022.3 1021.8 1015.8 MAX. QNH PRESSURE IN HPA 1026.0 1022.5 1018.6 1020.5 1021.0 1013.6 1017.4 1017.7 1021.2 1025.5 1032.1 1026.7 1032.1 DAY 26 8 29 7 7 3 3 30 25 19 18 3 MIN. QNH PRESSURE IN HPA 1012.9 1009.0 1009.5 1010.0 1009.0 1006.2 1006.7 1006.9 1005.3 1012.0 1016.3 1018.6 1005.3 DAY 12 5 13 3 29 19 6 8 20 6 28 15 MEAN QFF PRESSURE IN HPA 1021.9 1014.1 1010.0 1008.6 1005.2 997.4 998.4 1000.1 1002.6 1013.4 1021.3 1022.1 1009.6 MAX. QFF PRESSURE IN HPA 1032.5 1022.7 1015.8 1017.1 1014.2 1000.6 1004.7 1007.5 1011.9 1023.3 1034.0 1030.4 1034.0 DAY 15 24 29 7 7 17 3 31 25 19 18 3 MIN. QFF PRESSURE IN HPA 1013.4 1007.2 1005.3 1002.3 996.4 992.7 993.1 994.4 995.4 1005.2 1013.6 1015.7 992.7 DAY 6 5 19 10 29 10 11 8 20 6 28 11 PRESSURE AT HOUR 1800 UTC. MEAN QFE PRESSURE IN HPA 861.6 858.6 856.7 858.5 858.0 853.9 854.6 ****** ****** ****** ****** ****** ****** MAX. QFE PRESSURE IN HPA 866.8 864.4 860.0 862.2 862.6 856.2 859.8 ****** ****** ****** ****** ****** ****** DAY 26 8 24 7 7 3 3 ** ** ** ** ** MIN. QFE PRESSURE IN HPA 855.4 853.3 852.6 854.2 852.3 850.0 850.6 ****** ****** ****** ****** ****** ****** DAY 12 5 13 3 29 19 6 ** ** ** ** ** MEAN QNH PRESSURE IN HPA 1020.4 1017.1 1014.8 1016.9 1016.3 1011.6 1012.4 ****** ****** ****** ****** ****** ****** MAX. QNH PRESSURE IN HPA 1026.4 1023.7 1018.6 1021.2 1021.6 1014.3 1018.4 ****** ****** ****** ****** ****** ****** DAY 26 8 24 7 7 3 3 ** ** ** ** ** MIN. QNH PRESSURE IN HPA 1013.4 1010.9 1010.1 1012.0 1009.8 1007.2 1007.8 ****** ****** ****** ****** ****** ****** DAY 12 5 13 3 29 19 6 ** ** ** ** ** MEAN QFF PRESSURE IN HPA 1022.4 1014.7 1010.6 1009.3 1005.6 998.0 998.7 ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA 1032.2 1022.9 1016.1 1017.6 1012.7 1001.7 1004.3 ****** ****** ****** ****** ****** ****** DAY 15 23 15 6 7 17 3 ** ** ** ** ** MIN. QFF PRESSURE IN HPA 1012.3 1007.1 1005.7 1002.8 997.8 994.0 993.3 ****** ****** ****** ****** ****** ****** DAY 6 21 19 10 29 10 11 ** ** ** ** ** PRESSURE AT HOUR 2100 UTC. MEAN QFE PRESSURE IN HPA 861.4 858.6 856.5 858.6 858.2 854.2 854.8 ****** ****** ****** ****** ****** ****** MAX. QFE PRESSURE IN HPA 866.2 864.4 860.6 862.5 864.6 856.2 859.8 ****** ****** ****** ****** ****** ****** DAY 24 8 29 6 7 7 3 ** ** ** ** ** MIN. QFE PRESSURE IN HPA 855.0 853.3 852.2 854.0 852.0 850.7 850.8 ****** ****** ****** ****** ****** ****** DAY 12 5 13 10 29 19 6 ** ** ** ** ** MEAN QNH PRESSURE IN HPA 1020.2 1017.0 1014.7 1017.0 1016.5 1012.0 1012.7 ****** ****** ****** ****** ****** ****** MAX. QNH PRESSURE IN HPA 1025.7 1023.7 1019.3 1021.5 1023.9 1014.3 1018.4 ****** ****** ****** ****** ****** ****** DAY 24 8 29 6 7 7 3 ** ** ** ** ** MIN. QNH PRESSURE IN HPA 1012.9 1010.9 1009.7 1011.8 1009.5 1008.0 1008.1 ****** ****** ****** ****** ****** ****** DAY 12 5 13 10 29 19 6 ** ** ** ** ** MEAN QFF PRESSURE IN HPA 1021.4 1013.8 1009.8 1009.1 1005.6 998.4 999.1 ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA 1029.8 1023.7 1016.6 1019.1 1014.5 1002.2 1004.9 ****** ****** ****** ****** ****** ****** DAY 15 23 29 6 7 17 3 ** ** ** ** ** MIN. QFF PRESSURE IN HPA 1010.8 1005.6 1005.4 1003.1 996.3 994.2 993.8 ****** ****** ****** ****** ****** ****** DAY 6 21 7 10 29 9 7 ** ** ** ** ** ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ANAR (40839) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 30 53 N LONGITUDE 55 15 E DATA PROCESSING CENTER ELEVATION 1408.8 M MEANS AND EXTREMES FOR THE YEAR 1997 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AIR TEMPERATURE (C) 8.1 9.7 13.4 19.1 25.5 31.2 35.3 32.0 27.7 22.2 13.2 9.3 20.6 MINIMUN AIR TEMPERATURE (C) -1.6 -0.6 3.8 9.4 14.5 19.6 22.9 17.8 14.7 11.3 4.4 0.7 9.7 DAYS WITH MINIMUM TEMP. >=21 0 0 0 0 1 8 25 1 0 0 0 0 35 DAYS WITH MINIMUM TEMP. <=-4 9 11 1 0 0 0 0 0 0 0 0 2 23 DAYS WITH FREEZING MIN.<= 0 25 19 7 2 0 0 0 0 0 0 4 18 75 TEMPERATURE RECORDS LOWEST(C) -6.0 -12.0 -4.0 -1.0 9.0 14.8 16.4 10.0 11.4 4.4 -3.0 -6.4 -12.0 DAY 6 8 1 14 7 2 1 30 10 25 26 29 MAXIMUM AIR TEMPERATURE (C) 14.4 16.2 19.3 24.5 30.2 35.9 40.7 37.9 34.4 28.0 18.3 15.1 26.2 DAYS WITH MAXIMUM TEMP. >=30 0 0 0 0 16 30 31 31 28 10 0 0 146 DAYS WITH MAXIMUM TEMP. <= 0 0 0 0 0 0 0 0 0 0 0 0 0 0 TEMPERATURE RECORDS HIGHEST(C) 19.2 24.0 23.6 29.0 35.8 40.5 42.8 41.2 38.4 33.4 24.8 20.4 42.8 DAY 1 21 3 30 27 17 14 15 3 4 5 10 DIF. BETWEEN (MAX.-MIN.) (C) 16.0 16.8 15.5 15.1 15.7 16.3 17.8 20.1 19.7 16.7 13.9 14.4 16.5 MEAN DAILY TEMP. (MDT) (C) 6.4 7.8 11.6 16.9 22.4 27.8 31.8 27.8 24.6 19.6 11.4 7.9 18.0 COOLING DEG. DAYS(BASE 21 0C) 0.0 0.0 0.0 1.7 66.5 202.8 334.9 211.7 107.0 25.1 0.0 0.0 949.8 HEATING DEG. DAYS(BASE 18 0C) 360.2 287.0 199.7 52.4 3.5 0.0 0.0 0.0 0.0 18.7 199.1 313.2 1433.8 DEWPOINT (MEAN C) -5.8 -10.2 -5.6 -1.3 0.2 3.0 3.6 -0.1 -1.1 1.2 1.0 -1.7 -1.4 MIXING RATIO (G/KG) 3.07 2.37 3.27 4.61 4.66 5.83 6.04 4.60 4.21 4.99 4.91 4.04 4.38 VAPOUR PRESSURE (HPA) 4.21 3.25 4.46 6.29 6.38 7.93 8.18 6.27 5.78 6.85 6.76 5.55 5.99 SATURATION DEF. (HPA) 7.49 10.10 11.74 17.06 27.71 38.99 51.34 44.00 33.84 21.61 9.28 6.78 23.33 RELATIVE HUMIDITY (MEAN %) 43 27 32 31 21 19 15 14 17 28 47 50 29 RELATIVE HUMIDITY (MAX. %) 68 45 55 55 38 34 24 25 29 45 75 74 47 RELATIVE HUMIDITY (MIN. %) 26 16 18 17 13 12 10 9 11 19 32 32 18 RELATIVE HUMIDITY (MEAN% 03UTC) 66 45 53 55 37 34 24 25 29 44 74 72 47 RELATIVE HUMIDITY (MEAN% 09UTC) 33 21 22 22 16 14 11 10 13 22 36 39 22 RELATIVE HUMIDITY (MEAN% 15UTC) 37 23 28 26 18 15 13 12 15 27 42 48 25 RH=0 => RELATIVE HUMIDITY < 0.5% AMOUNT OF PRECIPITATION MM. 14.0 0.0 5.0 21.1 0.0 8.0 0.0 0.0 0.0 0.0 7.0 16.0 71.1 DAYS WITH PRECIPITATION >=10 0 0 0 1 0 0 0 0 0 0 0 1 2 DAYS WITH PRECIPITATION >= 5 1 0 0 2 0 0 0 0 0 0 0 1 4 DAYS WITH PRECIPITATION >= 1 3 0 3 3 0 3 0 0 0 0 4 4 20 DAYS WITH PRECIPITATION 3 0 3 6 0 3 0 0 0 0 6 4 25 GREATEST DAILY PRECIPITATION 8.0 0.0 2.0 10.0 0.0 4.0 0.0 0.0 0.0 0.0 2.0 12.0 12.0 DAY 26 ** 25 19 ** 25 ** ** ** ** 13 11 DAY WITH THUNDER STORM 0 0 0 0 0 1 0 0 0 0 0 0 1 DAYS WITH SNOW OR SLEET 1 0 0 0 0 0 0 0 0 0 0 0 1 DAYS WITH DUST 0 3 4 2 0 0 1 0 0 1 0 0 11 WIND DIRECTION (PREVAILING) 225 225 225 225 315 45 45 360 45 315 315 225 45 PREVAILING WIND SPEED(KNOTS) 14.8 14.6 14.4 13.5 9.4 7.9 8.4 9.8 6.2 9.9 6.5 12.6 7.4 PREVAILING WIND PERCENT 12.3 17.9 21.9 17.3 15.5 13.3 20.0 23.2 20.7 9.0 7.3 9.0 9.8 CALMS PERCENT OF WIND 62.6 47.1 31.6 37.3 52.9 52.7 45.8 48.4 53.3 61.9 68.0 63.2 52.1 NO. OF WIND OBSERVATION 155 140 155 150 155 150 155 155 150 155 150 155 1825 VECTOR WIND DIRECTION (MEAN) 225 248 235 243 333 338 23 9 353 327 307 230 289 VECTOR WIND MAGNITUDE(KNOTS) 2.4 3.3 5.4 3.6 2.3 2.0 2.7 3.9 1.9 1.4 0.7 1.4 1.3 WIND STEADINESES (MEAN %) 58.5 53.2 64.3 52.2 56.1 48.8 61.4 84.8 57.6 43.7 28.0 40.0 28.3 WIND SPEED (MEAN KNOTS) 4.1 6.2 8.4 6.9 4.1 4.1 4.4 4.6 3.3 3.2 2.5 3.5 4.6 FASTEST WIND DIRECTION 210 210 220 240 280 330 30 330 330 190 210 210 210 FASTEST WIND SPEED (KNOTS) 23 29 29 29 23 16 17 16 16 17 19 21 29 DAY 16 27 8 11 5 1 19 11 15 23 3 10 DAYS WITH SKY CLEAR (0-2)/8 20 21 15 14 21 23 20 31 30 24 14 16 249 DAYS WITH P.CLOUDY (3-6)/8 9 7 13 13 10 7 11 0 0 6 14 13 103 DAYS WITH CLOUDY (7-8)/8 2 0 3 3 0 0 0 0 0 1 2 2 13 DAYS WITH VISIBILITY =< 2 KM 0 1 1 1 0 0 0 0 0 1 0 0 4 DURATION OF SUNSHINE HOURS 246.8 249.6 240.8 243.7 297.4 296.0 321.4 369.4 322.4 271.2 191.0 221.9 3271.6 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ANAR (40839) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 30 53 N LONGITUDE 55 15 E DATA PROCESSING CENTER ELEVATION 1408.8 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 860.1 859.6 856.3 857.5 858.5 854.3 850.5 854.3 858.7 861.7 862.4 860.9 857.9 MAX. QFE PRESSURE IN HPA 867.0 866.6 868.4 864.0 864.8 859.3 854.0 858.6 864.2 867.0 871.8 869.4 871.8 DAY-HOUR 19- 6 17- 6 11- 6 14- 6 12- 6 15- 6 9- 6 29- 6 19- 6 9- 6 8- 6 28- 6 MIN. QFE PRESSURE IN HPA 849.0 854.0 849.0 851.7 852.5 847.6 845.0 849.2 852.8 857.8 857.0 853.0 845.0 DAY-HOUR 17-12 10-12 29-15 10-12 4-15 19-15 16-12 5-15 2-15 23-12 19-12 10-12 MEAN QNH PRESSURE IN HPA 1018.7 1018.2 1014.4 1015.8 1017.0 1012.1 1007.7 1012.1 1017.2 1020.6 1021.3 1019.7 1016.2 MAX. QNH PRESSURE IN HPA 1026.7 1026.2 1028.3 1023.2 1024.1 1017.8 1011.8 1017.0 1023.5 1026.7 1032.2 1029.4 1032.2 DAY-HOUR 19- 6 17- 6 11- 6 14- 6 12- 6 15- 6 9- 6 29- 6 19- 6 9- 6 8- 6 28- 6 MIN. QNH PRESSURE IN HPA 1006.0 1011.8 1006.0 1009.1 1010.0 1004.4 1001.4 1006.2 1010.4 1016.1 1015.2 1010.6 1001.4 DAY-HOUR 17-12 10-12 29-15 10-12 4-15 19-15 16-12 5-15 2-15 23-12 19-12 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 860.9 859.8 857.0 858.5 859.6 855.6 851.6 855.3 859.8 862.5 863.0 861.3 858.7 MAX. QFE PRESSURE IN HPA 865.4 865.0 866.2 863.0 864.2 859.0 853.6 858.2 863.0 866.0 870.4 867.4 870.4 DAY 8 17 11 14 12 15 9 29 19 9 8 29 MIN. QFE PRESSURE IN HPA 852.8 855.2 850.8 853.4 853.8 851.2 848.6 852.0 855.4 858.4 859.0 855.2 848.6 DAY 17 1 25 11 5 30 17 5 3 24 13 10 MEAN QNH PRESSURE IN HPA 1019.7 1018.4 1015.2 1016.9 1018.2 1013.6 1009.0 1013.3 1018.4 1021.5 1022.1 1020.1 1017.2 MAX. QNH PRESSURE IN HPA 1024.8 1024.4 1025.7 1022.1 1023.5 1017.5 1011.3 1016.6 1022.1 1025.5 1030.6 1027.1 1030.6 DAY 8 17 11 14 12 15 9 29 19 9 8 29 MIN. QNH PRESSURE IN HPA 1010.4 1013.1 1008.1 1011.1 1011.5 1008.5 1005.6 1009.5 1013.4 1016.8 1017.5 1013.1 1005.6 DAY 17 1 25 11 5 30 17 5 3 24 13 10 MEAN QFF PRESSURE IN HPA 1020.5 1018.3 1012.5 1010.8 1008.5 1000.6 994.3 1000.9 1008.5 1014.3 1019.6 1019.8 1010.7 MAX. QFF PRESSURE IN HPA 1027.6 1030.5 1025.8 1020.9 1016.7 1004.6 997.6 1007.7 1013.1 1018.9 1027.5 1031.8 1031.8 DAY 19 8 1 14 7 4 28 29 16 25 8 29 MIN. QFF PRESSURE IN HPA 1007.3 1006.4 1003.8 1003.2 999.9 996.4 990.7 996.0 1001.9 1009.7 1013.4 1008.9 990.7 DAY 17 23 25 11 5 19 17 1 3 24 13 10 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ANAR (40839) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 30 53 N LONGITUDE 55 15 E DATA PROCESSING CENTER ELEVATION 1408.8 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 861.8 861.2 857.9 859.2 860.1 855.9 851.9 855.8 860.7 863.5 864.1 862.7 859.6 MAX. QFE PRESSURE IN HPA 867.0 866.6 868.4 864.0 864.8 859.3 854.0 858.6 864.2 867.0 871.8 869.4 871.8 DAY 19 17 11 14 12 15 9 29 19 9 8 28 MIN. QFE PRESSURE IN HPA 852.8 856.6 851.2 853.4 853.8 851.6 849.0 852.8 856.4 860.0 860.0 856.2 849.0 DAY 17 27 25 11 5 30 12 5 3 24 13 10 MEAN QNH PRESSURE IN HPA 1020.7 1020.1 1016.2 1017.7 1018.8 1013.9 1009.3 1013.8 1019.4 1022.7 1023.3 1021.7 1018.1 MAX. QNH PRESSURE IN HPA 1026.7 1026.2 1028.3 1023.2 1024.1 1017.8 1011.8 1017.0 1023.5 1026.7 1032.2 1029.4 1032.2 DAY 19 17 11 14 12 15 9 29 19 9 8 28 MIN. QNH PRESSURE IN HPA 1010.4 1014.7 1008.5 1011.1 1011.5 1009.0 1006.0 1010.4 1014.5 1018.6 1018.6 1014.3 1006.0 DAY 17 27 25 11 5 30 12 5 3 24 13 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 860.1 860.1 856.4 857.7 858.7 854.6 850.8 854.6 859.0 861.8 862.3 860.9 858.1 MAX. QFE PRESSURE IN HPA 866.2 865.0 866.2 862.4 863.4 857.8 853.0 857.2 862.8 865.4 869.4 867.8 869.4 DAY 19 17 11 14 12 8 19 28 20 8 8 28 MIN. QFE PRESSURE IN HPA 850.0 855.0 849.8 852.6 853.0 850.4 847.6 851.4 855.2 858.8 858.0 853.8 847.6 DAY 17 27 25 11 5 30 16 6 2 23 20 10 MEAN QNH PRESSURE IN HPA 1018.8 1018.7 1014.5 1016.0 1017.2 1012.4 1008.1 1012.4 1017.5 1020.7 1021.2 1019.6 1016.4 MAX. QNH PRESSURE IN HPA 1025.7 1024.4 1025.7 1021.4 1022.5 1016.1 1010.6 1015.4 1021.8 1024.8 1029.4 1027.6 1029.4 DAY 19 17 11 14 12 8 19 28 20 8 8 28 MIN. QNH PRESSURE IN HPA 1007.2 1012.9 1006.9 1010.1 1010.6 1007.6 1004.4 1008.8 1013.1 1017.3 1016.3 1011.5 1004.4 DAY 17 27 25 11 5 30 16 6 2 23 20 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 858.6 858.3 854.8 856.0 857.2 852.9 849.2 853.0 857.0 860.3 861.0 859.6 856.5 MAX. QFE PRESSURE IN HPA 865.0 864.2 865.0 861.2 862.0 856.4 851.6 856.0 861.4 864.0 868.0 866.8 868.0 DAY 19 7 11 13 12 8 19 28 20 8 8 28 MIN. QFE PRESSURE IN HPA 849.0 854.0 850.0 851.7 853.0 848.6 845.0 849.6 853.2 857.8 857.0 853.0 845.0 DAY 17 10 17 10 4 19 16 5 2 23 19 10 MEAN QNH PRESSURE IN HPA 1017.0 1016.6 1012.7 1014.0 1015.4 1010.5 1006.3 1010.6 1015.2 1019.0 1019.7 1018.2 1014.6 MAX. QNH PRESSURE IN HPA 1024.4 1023.5 1024.4 1020.0 1020.9 1014.5 1009.0 1014.0 1020.2 1023.2 1027.8 1026.4 1027.8 DAY 19 7 11 13 12 8 19 28 20 8 8 28 MIN. QNH PRESSURE IN HPA 1006.0 1011.8 1007.2 1009.1 1010.6 1005.6 1001.4 1006.7 1010.8 1016.1 1015.2 1010.6 1001.4 DAY 17 10 17 10 4 19 16 5 2 23 19 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 ANAR (40839) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 30 53 N LONGITUDE 55 15 E DATA PROCESSING CENTER ELEVATION 1408.8 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 858.9 858.7 855.4 856.3 857.2 852.8 849.0 852.9 857.1 860.5 861.6 860.3 856.7 MAX. QFE PRESSURE IN HPA 865.0 866.0 865.0 861.4 861.0 857.0 852.0 856.0 861.4 864.2 868.6 868.0 868.6 DAY 19 7 11 13 12 11 28 28 20 8 8 28 MIN. QFE PRESSURE IN HPA 849.0 855.4 849.0 852.6 852.5 847.6 845.0 849.2 852.8 857.8 857.6 853.6 845.0 DAY 17 10 29 10 4 19 16 5 2 23 19 10 MEAN QNH PRESSURE IN HPA 1017.4 1017.2 1013.3 1014.4 1015.4 1010.3 1006.0 1010.5 1015.3 1019.3 1020.5 1018.9 1014.9 MAX. QNH PRESSURE IN HPA 1024.4 1025.5 1024.4 1020.2 1019.8 1015.2 1009.5 1014.0 1020.2 1023.5 1028.5 1027.8 1028.5 DAY 19 7 11 13 12 11 28 28 20 8 8 28 MIN. QNH PRESSURE IN HPA 1006.0 1013.4 1006.0 1010.1 1010.0 1004.4 1001.4 1006.2 1010.4 1016.1 1015.9 1011.3 1001.4 DAY 17 10 29 10 4 19 16 5 2 23 19 10 MEAN QFF PRESSURE IN HPA 1018.1 1017.1 1010.6 1008.2 1005.7 997.4 991.2 998.0 1005.3 1012.1 1018.0 1018.5 1008.3 MAX. QFF PRESSURE IN HPA 1027.5 1030.3 1023.4 1018.1 1013.7 1003.0 995.7 1005.0 1011.3 1016.0 1026.4 1030.2 1030.3 DAY 19 7 11 13 6 11 28 29 20 18 8 28 MIN. QFF PRESSURE IN HPA 1004.7 1008.4 1000.0 1002.2 1000.1 990.8 986.6 993.0 999.3 1007.7 1011.3 1006.3 986.6 DAY 17 22 29 10 4 19 16 5 2 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 ANAR (40839) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 30 53 N LONGITUDE 55 15 E DATA PROCESSING CENTER ELEVATION 1408.8 M MEANS AND EXTREMES FOR THE YEAR 1998 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AIR TEMPERATURE (C) 8.4 10.3 16.0 22.4 27.0 30.6 33.6 31.8 28.1 21.4 15.9 12.7 21.5 MINIMUN AIR TEMPERATURE (C) -0.5 1.8 7.4 12.1 15.3 17.4 22.1 19.7 15.1 9.0 3.8 0.8 10.3 DAYS WITH MINIMUM TEMP. >=21 0 0 0 0 1 0 18 12 1 0 0 0 32 DAYS WITH MINIMUM TEMP. <=-4 10 3 0 0 0 0 0 0 0 0 0 3 16 DAYS WITH FREEZING MIN.<= 0 19 13 6 0 0 0 0 0 0 0 2 16 56 TEMPERATURE RECORDS LOWEST(C) -9.0 -6.4 -3.0 5.0 8.4 15.4 17.6 15.4 10.0 3.8 0.0 -5.0 -9.0 DAY 15 18 6 8 6 2 27 28 19 30 15 9 MAXIMUM AIR TEMPERATURE (C) 14.1 16.1 21.2 27.5 32.3 35.4 38.7 37.2 34.4 28.3 23.5 21.0 27.5 DAYS WITH MAXIMUM TEMP. >=30 0 0 1 10 25 30 31 31 30 9 0 0 167 DAYS WITH MAXIMUM TEMP. <= 0 0 0 0 0 0 0 0 0 0 0 0 0 0 TEMPERATURE RECORDS HIGHEST(C) 19.6 24.0 31.4 33.0 36.4 37.2 44.8 41.4 38.2 35.6 26.4 27.2 44.8 DAY 5 8 29 21 21 9 8 21 5 1 9 18 DIF. BETWEEN (MAX.-MIN.) (C) 14.6 14.3 13.8 15.4 17.0 18.0 16.6 17.5 19.3 19.3 19.7 20.2 17.2 MEAN DAILY TEMP. (MDT) (C) 6.8 9.0 14.3 19.8 23.8 26.4 30.4 28.4 24.8 18.7 13.7 10.9 18.9 COOLING DEG. DAYS(BASE 21 0C) 0.0 0.0 6.7 25.5 102.0 163.1 291.2 229.7 114.3 24.3 0.0 0.0 956.8 HEATING DEG. DAYS(BASE 18 0C) 347.0 253.5 137.4 22.7 2.4 0.0 0.0 0.0 0.0 30.2 129.9 220.3 1143.3 DEWPOINT (MEAN C) -5.7 -4.8 -1.7 -0.4 0.5 0.4 5.4 4.8 2.9 -1.5 -4.2 -7.9 -1.0 MIXING RATIO (G/KG) 3.16 3.40 4.34 4.65 4.76 4.69 6.73 6.50 5.69 4.10 3.35 2.78 4.51 VAPOUR PRESSURE (HPA) 4.34 4.66 5.94 6.36 6.52 6.40 9.12 8.85 7.77 5.64 4.63 3.84 6.17 SATURATION DEF. (HPA) 7.42 8.78 13.59 22.22 30.97 39.11 45.26 40.22 32.44 21.90 14.87 12.30 24.09 RELATIVE HUMIDITY (MEAN %) 41 40 35 25 20 16 19 20 22 24 27 28 26 RELATIVE HUMIDITY (MAX. %) 65 65 58 45 35 28 32 33 35 39 42 42 43 RELATIVE HUMIDITY (MIN. %) 25 23 21 16 13 11 13 14 15 15 17 18 17 RELATIVE HUMIDITY (MEAN% 03UTC) 63 62 57 44 35 28 32 33 35 39 42 41 43 RELATIVE HUMIDITY (MEAN% 09UTC) 33 30 27 19 15 12 14 16 17 17 20 22 20 RELATIVE HUMIDITY (MEAN% 15UTC) 35 35 31 20 16 13 16 17 19 22 26 26 23 RH=0 => RELATIVE HUMIDITY < 0.5% AMOUNT OF PRECIPITATION MM. 4.0 7.4 24.0 0.4 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 35.8 DAYS WITH PRECIPITATION >=10 0 0 1 0 0 0 0 0 0 0 0 0 1 DAYS WITH PRECIPITATION >= 5 0 0 1 0 0 0 0 0 0 0 0 0 1 DAYS WITH PRECIPITATION >= 1 2 3 1 0 0 0 0 0 0 0 0 0 6 DAYS WITH PRECIPITATION 5 4 4 1 0 0 0 0 0 0 0 0 14 GREATEST DAILY PRECIPITATION 2.0 4.2 22.2 0.4 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 22.2 DAY 6 12 10 1 ** ** ** ** ** ** ** ** DAY WITH THUNDER STORM 0 0 0 0 1 0 0 0 0 0 0 0 1 DAYS WITH SNOW OR SLEET 0 0 0 0 0 0 0 0 0 0 0 0 0 DAYS WITH DUST 1 0 3 2 1 0 1 0 0 1 0 0 9 WIND DIRECTION (PREVAILING) 225 225 225 225 270 360 360 360 360 360 45 45 360 PREVAILING WIND SPEED(KNOTS) 12.8 14.3 15.2 13.8 11.3 8.4 9.3 9.0 8.3 7.8 5.5 5.7 8.4 PREVAILING WIND PERCENT 23.2 17.1 23.2 22.7 17.4 34.0 26.5 31.0 15.3 11.6 8.7 4.5 13.8 CALMS PERCENT OF WIND 49.0 44.3 35.5 26.7 29.0 37.3 36.8 32.3 69.3 61.3 71.3 76.1 47.4 NO. OF WIND OBSERVATION 155 140 155 150 155 150 155 155 150 155 150 155 1825 VECTOR WIND DIRECTION (MEAN) 213 237 226 249 302 7 8 7 359 343 356 229 296 VECTOR WIND MAGNITUDE(KNOTS) 4.2 3.0 5.2 3.4 3.1 4.2 3.6 4.4 1.4 1.2 0.6 0.5 1.3 WIND STEADINESES (MEAN %) 72.4 47.6 65.8 42.5 45.6 87.5 65.5 78.6 58.3 40.0 33.3 26.3 26.0 WIND SPEED (MEAN KNOTS) 5.8 6.3 7.9 8.0 6.8 4.8 5.5 5.6 2.4 3.0 1.8 1.9 5.0 FASTEST WIND DIRECTION 240 210 180 240 310 330 220 30 360 270 310 210 180 FASTEST WIND SPEED (KNOTS) 23 23 35 29 31 16 19 16 12 16 14 19 35 DAY 6 9 18 1 29 1 29 7 1 8 13 18 DAYS WITH SKY CLEAR (0-2)/8 19 17 9 17 25 30 28 30 29 29 28 21 282 DAYS WITH P.CLOUDY (3-6)/8 9 7 15 11 6 0 3 1 1 2 2 8 65 DAYS WITH CLOUDY (7-8)/8 3 4 7 2 0 0 0 0 0 0 0 2 18 DAYS WITH VISIBILITY =< 2 KM 0 0 2 0 1 0 0 0 0 0 0 0 3 DURATION OF SUNSHINE HOURS 228.2 208.3 202.5 269.3 345.8 373.7 346.7 348.9 310.9 312.9 273.7 236.7 3457.6 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ANAR (40839) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 30 53 N LONGITUDE 55 15 E DATA PROCESSING CENTER ELEVATION 1408.8 M MEANS AND EXTREMES FOR THE YEAR 1998 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL MEAN QFE PRESSURE IN HPA 858.7 859.2 858.4 858.4 858.2 856.4 852.7 855.8 857.7 861.7 863.5 864.4 858.7 MAX. QFE PRESSURE IN HPA 867.0 870.0 866.4 868.2 865.6 862.0 859.0 859.8 863.6 868.0 870.0 872.2 872.2 DAY-HOUR 22- 6 23- 6 27- 9 12- 6 8- 6 5- 6 20- 6 28- 6 13- 6 10- 6 21- 6 10- 6 MIN. QFE PRESSURE IN HPA 846.6 848.4 849.0 851.0 848.8 851.2 843.6 849.2 851.6 854.6 858.0 857.6 843.6 DAY-HOUR 13- 9 16-12 1-12 21-12 30-12 30-12 8-15 22-15 4-15 1-12 1-12 21-12 MEAN QNH PRESSURE IN HPA 1017.1 1017.7 1016.8 1016.8 1016.6 1014.5 1010.2 1013.8 1016.0 1020.6 1022.6 1023.6 1017.2 MAX. QNH PRESSURE IN HPA 1026.7 1030.1 1026.0 1028.0 1025.1 1020.9 1017.5 1018.4 1022.8 1027.8 1030.1 1032.6 1032.6 DAY-HOUR 22- 6 23- 6 27- 9 12- 6 8- 6 5- 6 20- 6 28- 6 13- 6 10- 6 21- 6 10- 6 MIN. QNH PRESSURE IN HPA 1003.3 1005.3 1006.0 1008.3 1005.8 1008.5 999.8 1006.2 1009.0 1012.4 1016.3 1015.9 999.8 DAY-HOUR 13- 9 16-12 1-12 21-12 30-12 30-12 8-15 22-15 4-15 1-12 1-12 21-12 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 859.0 859.8 859.0 859.3 859.5 857.5 853.8 856.9 858.8 862.6 864.2 865.1 859.6 MAX. QFE PRESSURE IN HPA 865.0 868.2 864.0 866.8 864.8 861.6 858.6 859.8 862.8 866.6 869.0 871.4 871.4 DAY 4 23 28 12 8 6 20 29 13 14 21 10 MIN. QFE PRESSURE IN HPA 847.8 850.0 851.8 853.4 853.8 853.8 847.4 852.6 854.9 858.0 861.2 859.2 847.4 DAY 13 16 15 24 30 30 8 22 5 1 2 21 MEAN QNH PRESSURE IN HPA 1017.5 1018.4 1017.5 1017.9 1018.0 1015.7 1011.5 1015.1 1017.3 1021.6 1023.4 1024.4 1018.2 MAX. QNH PRESSURE IN HPA 1024.4 1028.0 1023.2 1026.4 1024.1 1020.5 1017.0 1018.4 1021.8 1026.2 1029.0 1031.7 1031.7 DAY 4 23 28 12 8 6 20 29 13 14 21 10 MIN. QNH PRESSURE IN HPA 1004.6 1007.2 1009.2 1011.1 1011.5 1011.5 1004.2 1010.1 1012.8 1016.3 1020.0 1017.7 1004.2 DAY 13 16 15 24 30 30 8 22 5 1 2 21 MEAN QFF PRESSURE IN HPA 1017.7 1017.3 1013.0 1010.1 1007.7 1003.5 997.5 1002.3 1007.1 1015.4 1020.6 1023.5 1011.3 MAX. QFF PRESSURE IN HPA 1026.6 1031.4 1021.5 1021.3 1017.1 1008.4 1005.1 1006.9 1012.2 1021.7 1028.0 1033.8 1033.8 DAY 15 24 12 12 3 6 22 29 13 26 21 10 MIN. QFF PRESSURE IN HPA 1001.9 1005.6 1001.3 1001.0 999.7 998.9 988.0 994.5 998.6 1004.4 1014.4 1016.2 988.0 DAY 13 16 30 23 30 30 9 22 5 1 11 18 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ANAR (40839) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 30 53 N LONGITUDE 55 15 E DATA PROCESSING CENTER ELEVATION 1408.8 M MEANS AND EXTREMES FOR THE YEAR 1998 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 0600 UTC. MEAN QFE PRESSURE IN HPA 860.4 860.9 860.0 860.0 859.9 857.9 854.1 857.3 859.6 863.7 865.4 866.3 860.5 MAX. QFE PRESSURE IN HPA 867.0 870.0 865.2 868.2 865.6 862.0 859.0 859.8 863.6 868.0 870.0 872.2 872.2 DAY 22 23 27 12 8 5 20 28 13 10 21 10 MIN. QFE PRESSURE IN HPA 847.4 851.4 852.6 853.8 852.5 854.2 847.6 853.0 855.5 858.5 862.4 860.8 847.4 DAY 13 16 15 24 30 30 8 22 5 4 1 21 MEAN QNH PRESSURE IN HPA 1019.1 1019.7 1018.6 1018.6 1018.5 1016.2 1011.9 1015.6 1018.2 1022.9 1024.8 1025.9 1019.2 MAX. QNH PRESSURE IN HPA 1026.7 1030.1 1024.6 1028.0 1025.1 1020.9 1017.5 1018.4 1022.8 1027.8 1030.1 1032.6 1032.6 DAY 22 23 27 12 8 5 20 28 13 10 21 10 MIN. QNH PRESSURE IN HPA 1004.2 1008.8 1010.1 1011.5 1010.0 1012.0 1004.4 1010.6 1013.5 1016.9 1021.4 1019.6 1004.2 DAY 13 16 15 24 30 30 8 22 5 4 1 21 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 858.8 859.4 858.7 858.7 858.5 856.7 852.9 856.0 857.9 861.7 863.4 864.2 858.9 MAX. QFE PRESSURE IN HPA 865.2 869.0 866.4 866.8 864.2 860.8 857.2 858.6 861.4 865.8 868.0 870.0 870.0 DAY 4 23 27 12 8 6 20 8 13 10 21 9 MIN. QFE PRESSURE IN HPA 846.6 849.6 851.4 853.4 850.6 852.8 846.4 851.4 854.0 856.5 859.8 858.6 846.4 DAY 13 16 15 21 30 29 8 22 4 4 1 21 MEAN QNH PRESSURE IN HPA 1017.3 1018.0 1017.2 1017.2 1016.9 1014.8 1010.5 1014.0 1016.2 1020.6 1022.6 1023.5 1017.4 MAX. QNH PRESSURE IN HPA 1024.6 1029.0 1026.0 1026.4 1023.5 1019.6 1015.4 1017.0 1020.2 1025.3 1027.8 1030.1 1030.1 DAY 4 23 27 12 8 6 20 8 13 10 21 9 MIN. QNH PRESSURE IN HPA 1003.3 1006.7 1008.8 1011.1 1007.8 1010.4 1003.0 1008.8 1011.8 1014.6 1018.4 1017.0 1003.0 DAY 13 16 15 21 30 29 8 22 4 4 1 21 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 857.3 857.6 856.9 857.0 856.7 855.0 851.3 854.4 856.3 860.0 861.9 862.8 857.3 MAX. QFE PRESSURE IN HPA 864.2 866.6 864.2 865.0 862.6 859.4 856.4 857.0 859.4 864.0 866.8 868.8 868.8 DAY 22 23 27 12 8 6 21 28 26 10 21 9 MIN. QFE PRESSURE IN HPA 847.0 848.4 849.0 851.0 848.8 851.2 844.2 850.0 851.8 854.6 858.0 857.6 844.2 DAY 13 16 1 21 30 30 8 22 4 1 1 21 MEAN QNH PRESSURE IN HPA 1015.5 1015.9 1015.0 1015.2 1014.9 1013.0 1008.7 1012.2 1014.3 1018.6 1020.9 1021.9 1015.5 MAX. QNH PRESSURE IN HPA 1023.5 1026.2 1023.5 1024.4 1021.6 1017.9 1014.5 1015.2 1017.9 1023.2 1026.4 1028.7 1028.7 DAY 22 23 27 12 8 6 21 28 26 10 21 9 MIN. QNH PRESSURE IN HPA 1003.7 1005.3 1006.0 1008.3 1005.8 1008.5 1000.5 1007.2 1009.2 1012.4 1016.3 1015.9 1000.5 DAY 13 16 1 21 30 30 8 22 4 1 1 21 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ANAR (40839) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 30 53 N LONGITUDE 55 15 E DATA PROCESSING CENTER ELEVATION 1408.8 M MEANS AND EXTREMES FOR THE YEAR 1998 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 1500 UTC. MEAN QFE PRESSURE IN HPA 857.9 858.2 857.3 857.1 856.5 854.8 851.3 854.3 856.1 860.4 862.5 863.5 857.5 MAX. QFE PRESSURE IN HPA 864.8 866.6 863.6 864.2 862.2 859.2 857.0 857.0 859.4 864.6 867.4 870.0 870.0 DAY 4 23 27 12 8 6 20 28 26 25 21 9 MIN. QFE PRESSURE IN HPA 850.2 849.5 849.0 851.4 848.8 851.2 843.6 849.2 851.6 854.6 858.2 858.6 843.6 DAY 13 15 1 21 30 30 8 22 4 3 1 18 MEAN QNH PRESSURE IN HPA 1016.2 1016.5 1015.5 1015.3 1014.7 1012.7 1008.6 1012.1 1014.2 1019.1 1021.5 1022.6 1015.7 MAX. QNH PRESSURE IN HPA 1024.1 1026.2 1022.8 1023.5 1021.2 1017.7 1015.2 1015.2 1017.9 1023.9 1027.1 1030.1 1030.1 DAY 4 23 27 12 8 6 20 28 26 25 21 9 MIN. QNH PRESSURE IN HPA 1007.4 1006.6 1006.0 1008.8 1005.8 1008.5 999.8 1006.2 1009.0 1012.4 1016.6 1017.0 999.8 DAY 13 15 1 21 30 30 8 22 4 3 1 18 MEAN QFF PRESSURE IN HPA 1016.3 1015.3 1011.0 1007.5 1004.3 1000.4 994.5 999.2 1003.8 1012.8 1018.6 1021.5 1008.8 MAX. QFF PRESSURE IN HPA 1025.2 1029.2 1019.5 1018.1 1012.3 1005.8 1003.2 1003.9 1009.5 1019.2 1025.3 1032.2 1032.2 DAY 22 23 11 12 7 6 21 31 18 25 20 9 MIN. QFF PRESSURE IN HPA 1007.4 1005.3 1000.4 998.7 993.6 995.6 983.6 990.2 996.4 1001.2 1011.1 1013.7 983.6 DAY 6 16 15 21 30 30 8 22 5 1 1 18 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 ANAR (40839) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 30 53 N LONGITUDE 55 15 E DATA PROCESSING CENTER ELEVATION 1408.8 M MEANS AND EXTREMES FOR THE YEAR 1999 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AIR TEMPERATURE (C) 7.4 12.3 14.2 21.8 27.6 33.4 32.8 30.8 28.3 21.9 14.6 8.8 21.2 MINIMUN AIR TEMPERATURE (C) 0.4 4.3 5.6 11.1 14.6 20.1 21.6 17.6 15.1 8.9 3.5 -2.5 10.0 DAYS WITH MINIMUM TEMP. >=21 0 0 0 0 0 10 19 2 0 0 0 0 31 DAYS WITH MINIMUM TEMP. <=-4 7 1 0 0 0 0 0 0 0 0 0 17 25 DAYS WITH FREEZING MIN.<= 0 15 4 5 0 0 0 0 0 0 0 5 24 53 TEMPERATURE RECORDS LOWEST(C) -9.2 -5.8 -2.2 4.0 10.0 15.8 15.4 14.0 9.0 5.0 -2.2 -7.4 -9.2 DAY 5 2 7 12 23 1 31 28 30 24 30 7 MAXIMUM AIR TEMPERATURE (C) 12.5 17.7 19.1 27.6 32.9 38.9 37.9 36.3 34.8 28.8 21.2 16.4 27.0 DAYS WITH MAXIMUM TEMP. >=30 0 0 0 10 27 30 31 31 27 10 0 0 166 DAYS WITH MAXIMUM TEMP. <= 0 0 0 0 0 0 0 0 0 0 0 0 0 0 TEMPERATURE RECORDS HIGHEST(C) 22.0 23.0 29.8 31.2 37.4 42.2 42.8 38.6 38.0 31.6 27.0 21.4 42.8 DAY 1 20 26 25 20 29 6 31 1 15 8 15 DIF. BETWEEN (MAX.-MIN.) (C) 12.1 13.4 13.5 16.5 18.3 18.8 16.3 18.7 19.7 19.9 17.7 18.9 17.0 MEAN DAILY TEMP. (MDT) (C) 6.4 11.0 12.3 19.4 23.8 29.5 29.7 27.0 25.0 18.9 12.3 6.9 18.5 COOLING DEG. DAYS(BASE 21 0C) 0.0 0.0 0.1 14.7 89.3 255.8 271.2 185.2 122.4 0.5 0.0 0.0 939.2 HEATING DEG. DAYS(BASE 18 0C) 359.1 195.5 183.1 21.7 0.0 0.0 0.0 0.0 0.0 10.2 171.0 343.2 1283.8 DEWPOINT (MEAN C) -2.8 -0.1 -1.7 -1.0 -1.9 -1.6 2.9 -0.7 -0.2 -2.2 -2.4 -6.7 -1.5 MIXING RATIO (G/KG) 3.82 4.74 4.22 4.50 3.97 4.08 5.73 4.31 4.50 3.85 3.90 2.85 4.21 VAPOUR PRESSURE (HPA) 5.25 6.49 5.78 6.16 5.44 5.56 7.77 5.89 6.15 5.30 5.36 3.94 5.76 SATURATION DEF. (HPA) 5.77 8.52 11.71 21.39 33.15 48.13 44.09 40.51 34.98 22.74 12.46 8.46 24.33 RELATIVE HUMIDITY (MEAN %) 53 48 40 26 16 12 17 14 18 22 35 37 28 RELATIVE HUMIDITY (MAX. %) 81 75 64 45 28 22 27 27 31 38 56 57 46 RELATIVE HUMIDITY (MIN. %) 34 30 26 15 10 8 12 9 11 13 23 23 18 RELATIVE HUMIDITY (MEAN% 03UTC) 79 72 63 45 28 22 27 27 31 38 55 56 45 RELATIVE HUMIDITY (MEAN% 09UTC) 43 38 32 17 12 9 14 10 13 15 26 27 21 RELATIVE HUMIDITY (MEAN% 15UTC) 47 43 36 23 13 9 13 11 15 20 32 35 25 RH=0 => RELATIVE HUMIDITY < 0.5% AMOUNT OF PRECIPITATION MM. 27.9 47.6 15.8 6.4 0.0 0.0 0.0 0.0 0.0 0.0 0.0 3.6 101.3 DAYS WITH PRECIPITATION >=10 0 2 0 0 0 0 0 0 0 0 0 0 2 DAYS WITH PRECIPITATION >= 5 2 3 1 0 0 0 0 0 0 0 0 0 6 DAYS WITH PRECIPITATION >= 1 6 6 5 3 0 0 0 0 0 0 0 1 21 DAYS WITH PRECIPITATION 8 8 5 4 0 0 0 0 0 0 0 2 27 GREATEST DAILY PRECIPITATION 8.0 22.0 8.0 3.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 3.0 22.0 DAY 2 6 1 24 ** ** ** ** ** ** ** 12 DAY WITH THUNDER STORM 0 0 1 1 0 0 0 0 0 0 0 0 2 DAYS WITH SNOW OR SLEET 1 0 0 0 0 0 0 0 0 0 0 0 1 DAYS WITH DUST 1 0 2 6 2 0 1 0 0 0 0 0 12 WIND DIRECTION (PREVAILING) 225 225 225 225 360 45 360 360 45 315 225 360 360 PREVAILING WIND SPEED(KNOTS) 14.8 13.2 13.8 15.8 9.5 7.3 8.9 8.7 6.4 6.8 11.9 8.4 8.5 PREVAILING WIND PERCENT 11.6 18.6 18.1 17.3 22.6 16.0 21.9 41.9 14.0 7.7 12.0 5.8 12.7 CALMS PERCENT OF WIND 57.4 45.7 40.0 33.3 35.5 44.0 37.4 30.3 64.7 72.9 62.7 79.4 50.3 NO. OF WIND OBSERVATION 155 140 155 150 155 150 155 155 150 155 150 155 1825 VECTOR WIND DIRECTION (MEAN) 234 217 242 272 342 332 16 4 17 336 265 300 312 VECTOR WIND MAGNITUDE(KNOTS) 1.7 3.5 2.6 4.1 4.0 1.7 3.5 4.9 1.5 1.0 1.3 0.5 1.4 WIND STEADINESES (MEAN %) 37.8 59.3 38.8 55.4 66.7 36.2 67.3 84.5 62.5 55.6 36.1 26.3 29.8 WIND SPEED (MEAN KNOTS) 4.5 5.9 6.7 7.4 6.0 4.7 5.2 5.8 2.4 1.8 3.6 1.9 4.7 FASTEST WIND DIRECTION 200 210 240 210 270 210 30 330 320 280 190 190 200 FASTEST WIND SPEED (KNOTS) 39 29 29 33 21 19 17 17 12 14 21 16 39 DAY 9 21 14 8 14 25 11 25 1 29 26 3 DAYS WITH SKY CLEAR (0-2)/8 9 11 11 17 30 28 26 30 30 31 19 24 266 DAYS WITH P.CLOUDY (3-6)/8 15 11 13 13 1 2 5 1 0 0 11 6 78 DAYS WITH CLOUDY (7-8)/8 7 6 7 0 0 0 0 0 0 0 0 1 21 DAYS WITH VISIBILITY =< 2 KM 0 0 0 1 0 0 1 0 0 0 0 1 3 DURATION OF SUNSHINE HOURS 166.0 184.0 210.7 268.5 365.2 354.3 341.5 363.5 330.6 312.9 238.5 245.0 3380.7 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ANAR (40839) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 30 53 N LONGITUDE 55 15 E DATA PROCESSING CENTER ELEVATION 1408.8 M MEANS AND EXTREMES FOR THE YEAR 1999 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL MEAN QFE PRESSURE IN HPA 860.9 859.9 857.5 858.5 856.9 853.9 852.0 855.3 856.7 861.2 861.5 864.6 858.2 MAX. QFE PRESSURE IN HPA 870.2 866.6 865.4 863.6 863.6 861.2 857.0 862.4 864.6 866.0 868.6 872.6 872.6 DAY-HOUR 2- 6 12- 6 19- 6 11- 6 28- 6 1- 6 19- 6 20- 6 30- 6 27- 6 14- 6 6- 6 MIN. QFE PRESSURE IN HPA 850.2 850.8 851.0 851.8 848.0 845.4 847.6 850.2 851.6 857.0 855.2 856.6 845.4 DAY-HOUR 18-12 6- 9 2-15 14-12 20-15 24-15 25-15 6-15 12-15 22-12 12-12 15-12 MEAN QNH PRESSURE IN HPA 1019.6 1018.5 1015.8 1016.9 1015.1 1011.6 1009.4 1013.2 1014.8 1020.0 1020.4 1023.9 1016.6 MAX. QNH PRESSURE IN HPA 1030.3 1026.2 1024.8 1022.8 1022.8 1020.0 1015.2 1021.4 1023.9 1025.5 1028.5 1033.1 1033.1 DAY-HOUR 2- 6 12- 6 19- 6 11- 6 28- 6 1- 6 19- 6 20- 6 30- 6 27- 6 14- 6 6- 6 MIN. QNH PRESSURE IN HPA 1007.4 1008.1 1008.3 1009.2 1004.9 1001.9 1004.4 1007.4 1009.0 1015.2 1013.1 1014.7 1001.9 DAY-HOUR 18-12 6- 9 2-15 14-12 20-15 24-15 25-15 6-15 12-15 22-12 12-12 15-12 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 861.2 860.3 858.0 859.5 858.1 855.3 853.2 856.3 857.7 862.2 862.2 865.2 859.1 MAX. QFE PRESSURE IN HPA 867.6 865.6 864.2 862.4 862.8 860.6 856.8 861.6 863.4 864.6 866.6 871.4 871.4 DAY 2 12 19 1 28 1 19 20 30 27 14 6 MIN. QFE PRESSURE IN HPA 854.4 852.7 852.0 854.4 852.8 848.6 851.2 852.2 853.8 859.8 858.0 858.4 848.6 DAY 18 6 3 9 21 25 3 14 16 22 12 16 MEAN QNH PRESSURE IN HPA 1020.0 1019.0 1016.4 1018.1 1016.5 1013.3 1010.9 1014.4 1016.0 1021.1 1021.2 1024.6 1017.6 MAX. QNH PRESSURE IN HPA 1027.4 1025.1 1023.5 1021.4 1021.8 1019.3 1015.0 1020.5 1022.5 1023.9 1026.2 1031.7 1031.7 DAY 2 12 19 1 28 1 19 20 30 27 14 6 MIN. QNH PRESSURE IN HPA 1012.2 1010.3 1009.5 1012.2 1010.4 1005.6 1008.5 1009.7 1011.5 1018.4 1016.3 1016.8 1005.6 DAY 18 6 3 9 21 25 3 14 16 22 12 16 MEAN QFF PRESSURE IN HPA 1020.3 1016.6 1013.0 1010.7 1006.0 999.7 997.1 1002.5 1005.6 1014.8 1018.5 1025.8 1010.9 MAX. QFF PRESSURE IN HPA 1032.6 1024.1 1023.2 1019.0 1011.8 1007.8 1002.3 1009.1 1015.6 1020.0 1026.9 1034.8 1034.8 DAY 3 7 19 11 28 1 29 20 30 27 30 6 MIN. QFF PRESSURE IN HPA 1008.4 1004.1 1005.7 1003.6 997.7 990.1 993.3 997.8 999.3 1012.2 1011.2 1012.0 990.1 DAY 18 21 13 9 21 25 10 7 16 25 1 16 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ANAR (40839) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 30 53 N LONGITUDE 55 15 E DATA PROCESSING CENTER ELEVATION 1408.8 M MEANS AND EXTREMES FOR THE YEAR 1999 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 0600 UTC. MEAN QFE PRESSURE IN HPA 862.6 861.5 859.2 860.3 858.7 855.7 853.5 856.9 858.5 863.3 863.3 866.5 860.0 MAX. QFE PRESSURE IN HPA 870.2 866.6 865.4 863.6 863.6 861.2 857.0 862.4 864.6 866.0 868.6 872.6 872.6 DAY 2 12 19 11 28 1 19 20 30 27 14 6 MIN. QFE PRESSURE IN HPA 855.0 852.6 852.6 855.0 852.8 848.6 851.2 852.8 854.8 861.0 858.8 860.0 848.6 DAY 18 6 2 9 20 25 6 7 16 22 12 16 MEAN QNH PRESSURE IN HPA 1021.6 1020.4 1017.7 1019.0 1017.1 1013.7 1011.2 1015.0 1016.9 1022.4 1022.5 1026.1 1018.6 MAX. QNH PRESSURE IN HPA 1030.3 1026.2 1024.8 1022.8 1022.8 1020.0 1015.2 1021.4 1023.9 1025.5 1028.5 1033.1 1033.1 DAY 2 12 19 11 28 1 19 20 30 27 14 6 MIN. QNH PRESSURE IN HPA 1012.9 1010.1 1010.1 1012.9 1010.4 1005.6 1008.5 1010.4 1012.7 1019.8 1017.3 1018.6 1005.6 DAY 18 6 2 9 20 25 6 7 16 22 12 16 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 861.1 860.1 858.0 858.6 857.1 854.3 852.2 855.5 857.0 861.2 861.4 864.5 858.4 MAX. QFE PRESSURE IN HPA 869.4 865.4 864.0 861.8 862.2 860.0 855.8 860.6 863.0 863.8 866.8 870.4 870.4 DAY 2 12 19 11 28 1 19 19 30 27 14 6 MIN. QFE PRESSURE IN HPA 854.0 850.8 852.6 853.6 851.0 848.2 849.0 852.0 853.0 858.6 856.6 858.6 848.2 DAY 18 6 2 8 20 25 12 6 16 22 12 15 MEAN QNH PRESSURE IN HPA 1019.9 1018.8 1016.4 1017.0 1015.4 1012.1 1009.7 1013.4 1015.1 1020.1 1020.2 1023.7 1016.8 MAX. QNH PRESSURE IN HPA 1029.4 1024.8 1023.2 1020.7 1021.2 1018.6 1013.8 1019.3 1022.1 1023.0 1026.4 1030.6 1030.6 DAY 2 12 19 11 28 1 19 19 30 27 14 6 MIN. QNH PRESSURE IN HPA 1011.8 1008.1 1010.1 1011.3 1008.3 1005.1 1006.0 1009.5 1010.6 1017.0 1014.7 1017.0 1005.1 DAY 18 6 2 8 20 25 12 6 16 22 12 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 859.4 858.6 856.1 856.8 855.3 852.3 850.6 853.9 855.1 859.6 860.0 863.1 856.7 MAX. QFE PRESSURE IN HPA 868.4 862.6 861.6 861.8 860.2 858.2 853.8 859.0 861.8 862.0 865.6 869.0 869.0 DAY 2 12 19 5 28 1 28 19 30 27 14 6 MIN. QFE PRESSURE IN HPA 850.2 853.0 851.6 851.8 848.8 846.2 848.0 850.6 851.6 857.0 855.2 856.6 846.2 DAY 18 6 2 14 20 23 25 6 16 22 12 15 MEAN QNH PRESSURE IN HPA 1018.0 1017.0 1014.2 1015.0 1013.3 1009.8 1007.9 1011.7 1013.1 1018.1 1018.6 1022.1 1014.9 MAX. QNH PRESSURE IN HPA 1028.3 1021.6 1020.5 1020.7 1018.9 1016.6 1011.5 1017.5 1020.7 1020.9 1025.1 1029.0 1029.0 DAY 2 12 19 5 28 1 28 19 30 27 14 6 MIN. QNH PRESSURE IN HPA 1007.4 1010.6 1009.0 1009.2 1005.8 1002.8 1004.9 1007.8 1009.0 1015.2 1013.1 1014.7 1002.8 DAY 18 6 2 14 20 23 25 6 16 22 12 15 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ANAR (40839) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 30 53 N LONGITUDE 55 15 E DATA PROCESSING CENTER ELEVATION 1408.8 M MEANS AND EXTREMES FOR THE YEAR 1999 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 1500 UTC. MEAN QFE PRESSURE IN HPA 860.2 859.1 856.4 857.0 855.3 852.0 850.5 854.0 855.1 859.9 860.8 863.8 857.0 MAX. QFE PRESSURE IN HPA 869.4 862.6 861.2 861.0 860.0 858.0 853.8 858.8 861.8 862.2 866.0 869.0 869.4 DAY 2 7 19 5 27 1 28 19 30 27 14 6 MIN. QFE PRESSURE IN HPA 852.0 854.2 851.0 851.8 848.0 845.4 847.6 850.2 851.6 857.0 857.4 857.6 845.4 DAY 18 20 2 14 20 24 25 6 12 22 12 15 MEAN QNH PRESSURE IN HPA 1018.9 1017.6 1014.5 1015.2 1013.3 1009.5 1007.7 1011.7 1013.0 1018.5 1019.6 1023.0 1015.2 MAX. QNH PRESSURE IN HPA 1029.4 1021.6 1020.0 1019.8 1018.6 1016.3 1011.5 1017.3 1020.7 1021.2 1025.5 1029.0 1029.4 DAY 2 7 19 5 27 1 28 19 30 27 14 6 MIN. QNH PRESSURE IN HPA 1009.5 1012.0 1008.3 1009.2 1004.9 1001.9 1004.4 1007.4 1009.0 1015.2 1015.7 1015.9 1001.9 DAY 18 20 2 14 20 24 25 6 12 22 12 15 MEAN QFF PRESSURE IN HPA 1019.3 1015.1 1010.9 1007.7 1002.8 995.9 994.0 999.8 1002.6 1012.1 1016.9 1024.1 1008.4 MAX. QFF PRESSURE IN HPA 1033.6 1022.5 1019.8 1015.3 1008.3 1004.2 999.3 1005.4 1013.6 1017.1 1027.8 1032.3 1033.6 DAY 2 1 7 11 27 1 28 18 30 27 30 6 MIN. QFF PRESSURE IN HPA 1006.5 1005.4 1003.5 1000.9 993.3 987.7 989.4 994.6 996.2 1008.8 1010.3 1013.4 987.7 DAY 18 20 21 14 20 24 10 6 16 22 1 15 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 ANAR (40839) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 30 53 N LONGITUDE 55 15 E DATA PROCESSING CENTER ELEVATION 1408.8 M MEANS AND EXTREMES FOR THE YEAR 2000 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AIR TEMPERATURE (C) 8.3 10.2 15.3 24.7 30.5 31.4 31.5 30.4 28.7 20.9 12.0 10.1 21.1 MINIMUN AIR TEMPERATURE (C) -0.6 0.2 4.5 12.8 17.5 18.0 18.6 17.1 16.4 9.4 4.1 1.4 9.9 DAYS WITH MINIMUM TEMP. >=21 0 0 0 0 0 6 12 1 2 0 0 0 21 DAYS WITH MINIMUM TEMP. <=-4 10 8 0 0 0 0 0 0 0 0 0 5 23 DAYS WITH FREEZING MIN.<= 0 20 16 8 0 0 0 0 0 0 0 7 11 62 TEMPERATURE RECORDS LOWEST(C) -9.8 -7.4 -2.6 7.0 12.4 13.6 13.0 14.4 11.8 5.6 -1.4 -6.6 -9.8 DAY 14 11 6 1 14 14 26 14 25 8 30 30 MAXIMUM AIR TEMPERATURE (C) 13.9 16.2 21.2 30.2 36.1 36.8 36.5 35.9 34.8 27.4 17.2 16.1 26.9 DAYS WITH MAXIMUM TEMP. >=30 0 0 1 20 31 28 31 31 30 3 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 22.6 30.0 34.4 40.2 41.0 41.0 38.8 38.4 31.4 27.0 24.4 41.0 DAY 6 26 24 22 29 29 8 4 2 1 1 1 DIF. BETWEEN (MAX.-MIN.) (C) 14.5 16.0 16.7 17.4 18.6 18.8 17.9 18.8 18.4 18.0 13.1 14.7 17.0 MEAN DAILY TEMP. (MDT) (C) 6.6 8.2 12.8 21.5 26.8 27.4 27.5 26.5 25.6 18.4 10.6 8.7 18.4 COOLING DEG. DAYS(BASE 21 0C) 0.0 0.0 3.5 42.9 180.6 192.7 202.1 170.6 138.9 5.5 0.0 0.0 936.8 HEATING DEG. DAYS(BASE 18 0C) 352.3 285.4 173.6 4.1 0.0 0.0 0.0 0.0 0.0 18.3 223.1 287.3 1344.1 DEWPOINT (MEAN C) -6.3 -6.8 -6.5 -1.0 2.1 0.2 1.3 0.7 2.6 0.6 0.4 -2.3 -1.3 MIXING RATIO (G/KG) 3.03 2.82 2.93 4.30 5.29 4.66 5.12 4.77 5.48 4.84 4.74 3.98 4.33 VAPOUR PRESSURE (HPA) 4.16 3.88 4.02 5.88 7.21 6.35 6.97 6.51 7.48 6.64 6.52 5.47 5.92 SATURATION DEF. (HPA) 7.64 9.57 14.63 26.92 38.43 42.13 41.40 38.93 34.00 19.60 8.41 7.74 24.12 RELATIVE HUMIDITY (MEAN %) 40 34 25 20 18 15 16 16 20 29 50 47 28 RELATIVE HUMIDITY (MAX. %) 62 57 42 34 29 25 28 28 32 48 74 70 44 RELATIVE HUMIDITY (MIN. %) 26 21 15 13 12 10 11 11 14 20 36 31 18 RELATIVE HUMIDITY (MEAN% 03UTC) 59 57 41 34 29 25 28 28 32 48 74 69 44 RELATIVE HUMIDITY (MEAN% 09UTC) 31 26 19 15 14 11 12 12 15 23 41 37 21 RELATIVE HUMIDITY (MEAN% 15UTC) 37 27 21 16 15 12 13 14 18 26 47 43 24 RH=0 => RELATIVE HUMIDITY < 0.5% AMOUNT OF PRECIPITATION MM. 24.6 0.0 1.4 0.0 0.0 0.0 0.0 0.0 0.0 0.2 28.0 5.7 59.9 DAYS WITH PRECIPITATION >=10 1 0 0 0 0 0 0 0 0 0 2 0 3 DAYS WITH PRECIPITATION >= 5 1 0 0 0 0 0 0 0 0 0 2 0 3 DAYS WITH PRECIPITATION >= 1 2 0 0 0 0 0 0 0 0 0 4 2 8 DAYS WITH PRECIPITATION 4 0 2 0 0 0 0 0 0 1 6 4 17 GREATEST DAILY PRECIPITATION 20.0 0.0 0.8 0.0 0.0 0.0 0.0 0.0 0.0 0.2 14.0 3.0 20.0 DAY 17 ** 29 ** ** ** ** ** ** 4 7 10 DAY WITH THUNDER STORM 0 0 1 0 0 0 0 0 0 0 0 0 1 DAYS WITH SNOW OR SLEET 0 0 0 0 0 0 0 0 0 0 0 0 0 DAYS WITH DUST 0 1 2 3 2 2 0 0 0 0 0 0 10 WIND DIRECTION (PREVAILING) 225 225 225 315 315 45 360 360 360 360 45 180 360 PREVAILING WIND SPEED(KNOTS) 14.2 16.7 13.3 9.3 9.6 8.4 10.7 10.1 7.6 8.0 7.1 12.8 9.2 PREVAILING WIND PERCENT 14.2 11.0 15.5 16.7 18.7 16.0 39.4 38.1 11.3 7.7 6.0 11.0 12.5 CALMS PERCENT OF WIND 50.3 55.2 37.4 38.7 47.1 47.3 31.6 41.3 72.0 72.3 76.7 68.4 53.1 NO. OF WIND OBSERVATION 155 145 155 150 155 150 155 155 150 155 150 155 1830 VECTOR WIND DIRECTION (MEAN) 205 263 255 292 297 356 10 6 351 324 308 214 310 VECTOR WIND MAGNITUDE(KNOTS) 3.0 2.3 3.7 2.9 3.0 3.0 5.6 4.8 0.9 1.0 0.6 2.8 1.5 WIND STEADINESES (MEAN %) 55.6 46.0 50.7 48.3 63.8 61.2 86.2 88.9 40.9 45.5 33.3 71.8 32.6 WIND SPEED (MEAN KNOTS) 5.4 5.0 7.3 6.0 4.7 4.9 6.5 5.4 2.2 2.2 1.8 3.9 4.6 FASTEST WIND DIRECTION 190 210 190 300 270 330 360 360 360 270 210 210 190 FASTEST WIND SPEED (KNOTS) 27 33 43 35 19 19 19 19 14 16 19 23 43 DAY 16 14 25 21 11 1 1 10 9 3 5 11 DAYS WITH SKY CLEAR (0-2)/8 18 23 24 21 27 30 29 31 25 25 14 18 285 DAYS WITH P.CLOUDY (3-6)/8 10 6 6 9 4 0 2 0 5 5 12 11 70 DAYS WITH CLOUDY (7-8)/8 3 0 1 0 0 0 0 0 0 1 4 2 11 DAYS WITH VISIBILITY =< 2 KM 1 0 1 0 0 1 0 0 0 0 0 1 4 DURATION OF SUNSHINE HOURS 215.8 252.4 269.2 286.3 358.9 359.9 360.1 366.1 293.6 283.1 191.6 206.7 3443.7 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ANAR (40839) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 30 53 N LONGITUDE 55 15 E DATA PROCESSING CENTER ELEVATION 1408.8 M MEANS AND EXTREMES FOR THE YEAR 2000 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL MEAN QFE PRESSURE IN HPA 859.6 859.3 858.2 858.2 855.3 853.5 854.1 855.5 856.6 861.5 863.1 861.9 858.1 MAX. QFE PRESSURE IN HPA 868.8 868.6 863.8 863.2 860.8 858.8 859.8 860.4 863.8 867.4 872.2 869.2 872.2 DAY-HOUR 31- 6 11- 6 21- 6 2- 6 4- 6 3- 3 30- 6 23- 6 29- 6 16- 6 17- 6 17- 6 MIN. QFE PRESSURE IN HPA 852.0 848.4 850.0 853.2 849.8 847.0 847.4 848.0 847.0 855.0 855.4 852.2 847.0 DAY-HOUR 17-12 7-12 2-12 21-12 27-12 24-15 9-15 31-15 1-15 1-12 6-12 15-12 MEAN QNH PRESSURE IN HPA 1018.2 1017.9 1016.5 1016.6 1013.3 1011.1 1011.9 1013.5 1014.8 1020.3 1022.2 1020.8 1016.4 MAX. QNH PRESSURE IN HPA 1028.7 1028.5 1023.0 1022.3 1019.6 1017.3 1018.4 1019.1 1023.0 1027.1 1032.6 1029.2 1032.6 DAY-HOUR 31- 6 11- 6 21- 6 2- 6 4- 6 3- 3 30- 6 23- 6 29- 6 16- 6 17- 6 17- 6 MIN. QNH PRESSURE IN HPA 1009.5 1005.3 1007.2 1010.8 1006.9 1003.7 1004.2 1004.9 1003.7 1012.9 1013.4 1009.7 1003.7 DAY-HOUR 17-12 7-12 2-12 21-12 27-12 24-15 9-15 31-15 1-15 1-12 6-12 15-12 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 860.1 859.8 859.1 859.5 856.8 854.8 855.2 856.5 857.7 862.4 863.7 862.4 859.0 MAX. QFE PRESSURE IN HPA 867.8 867.2 862.4 862.4 860.2 858.8 859.8 859.8 863.0 866.8 871.0 867.4 871.0 DAY 31 11 4 2 4 3 31 23 30 16 17 17 MIN. QFE PRESSURE IN HPA 853.4 851.8 855.4 856.8 853.4 850.4 849.8 852.0 850.4 858.0 856.8 854.6 849.8 DAY 17 7 5 22 17 25 9 31 1 2 6 15 MEAN QNH PRESSURE IN HPA 1018.7 1018.4 1017.7 1018.0 1015.0 1012.7 1013.1 1014.6 1016.0 1021.4 1022.8 1021.4 1017.5 MAX. QNH PRESSURE IN HPA 1027.6 1026.9 1021.4 1021.4 1018.9 1017.3 1018.4 1018.4 1022.1 1026.4 1031.3 1027.1 1031.3 DAY 31 11 4 2 4 3 31 23 30 16 17 17 MIN. QNH PRESSURE IN HPA 1011.1 1009.2 1013.4 1015.0 1011.1 1007.6 1006.9 1009.5 1007.6 1016.3 1015.0 1012.4 1006.9 DAY 17 7 5 22 17 25 9 31 1 2 6 15 MEAN QFF PRESSURE IN HPA 1019.0 1017.9 1014.2 1009.3 1003.0 1000.1 1000.6 1003.0 1005.3 1015.2 1020.9 1020.8 1010.8 MAX. QFF PRESSURE IN HPA 1030.8 1031.0 1022.2 1015.9 1008.5 1009.0 1007.2 1008.0 1012.0 1021.0 1029.9 1030.2 1031.0 DAY 31 11 4 3 4 14 26 23 26 6 17 17 MIN. QFF PRESSURE IN HPA 1009.2 1005.9 1005.9 1005.1 997.3 992.7 992.6 998.0 995.1 1007.0 1008.1 1008.4 992.6 DAY 29 7 25 22 27 25 9 4 2 1 6 15 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ANAR (40839) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 30 53 N LONGITUDE 55 15 E DATA PROCESSING CENTER ELEVATION 1408.8 M MEANS AND EXTREMES FOR THE YEAR 2000 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 0600 UTC. MEAN QFE PRESSURE IN HPA 861.4 861.2 860.2 860.2 857.3 855.0 855.4 856.9 858.5 863.5 864.8 863.6 859.8 MAX. QFE PRESSURE IN HPA 868.8 868.6 863.8 863.2 860.8 858.8 859.8 860.4 863.8 867.4 872.2 869.2 872.2 DAY 31 11 21 2 4 3 30 23 29 16 17 17 MIN. QFE PRESSURE IN HPA 854.8 852.2 855.2 857.6 853.8 850.4 850.4 852.8 850.8 859.0 857.6 855.2 850.4 DAY 17 7 2 21 17 25 9 31 2 2 6 15 MEAN QNH PRESSURE IN HPA 1020.2 1020.0 1018.9 1018.8 1015.5 1012.9 1013.4 1015.1 1016.9 1022.7 1024.1 1022.8 1018.4 MAX. QNH PRESSURE IN HPA 1028.7 1028.5 1023.0 1022.3 1019.6 1017.3 1018.4 1019.1 1023.0 1027.1 1032.6 1029.2 1032.6 DAY 31 11 21 2 4 3 30 23 29 16 17 17 MIN. QNH PRESSURE IN HPA 1012.7 1009.7 1013.1 1015.9 1011.5 1007.6 1007.6 1010.4 1008.1 1017.5 1015.9 1013.1 1007.6 DAY 17 7 2 21 17 25 9 31 2 2 6 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 859.5 859.7 858.5 858.4 855.7 853.8 854.3 855.7 856.8 861.4 862.8 861.5 858.2 MAX. QFE PRESSURE IN HPA 866.6 866.4 862.6 861.8 859.4 857.4 858.8 859.2 862.4 864.8 870.2 867.2 870.2 DAY 31 11 21 2 5 3 30 23 29 16 17 17 MIN. QFE PRESSURE IN HPA 854.0 849.6 853.0 855.4 852.2 848.6 849.2 850.8 848.8 856.8 856.0 852.8 848.6 DAY 21 7 2 21 27 26 9 31 1 2 6 15 MEAN QNH PRESSURE IN HPA 1018.1 1018.3 1016.9 1016.8 1013.7 1011.5 1012.1 1013.7 1015.0 1020.3 1021.9 1020.3 1016.5 MAX. QNH PRESSURE IN HPA 1026.2 1026.0 1021.6 1020.7 1017.9 1015.7 1017.3 1017.7 1021.4 1024.1 1030.3 1026.9 1030.3 DAY 31 11 21 2 5 3 30 23 29 16 17 17 MIN. QNH PRESSURE IN HPA 1011.8 1006.7 1010.6 1013.4 1009.7 1005.6 1006.2 1008.1 1005.8 1015.0 1014.0 1010.4 1005.6 DAY 21 7 2 21 27 26 9 31 1 2 6 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 858.2 857.8 856.4 856.4 853.6 852.0 852.9 854.2 855.1 859.8 861.7 860.5 856.6 MAX. QFE PRESSURE IN HPA 864.8 864.2 860.2 859.8 857.8 855.8 857.8 857.2 860.6 863.4 869.0 866.0 869.0 DAY 30 11 21 2 4 17 30 13 29 16 17 17 MIN. QFE PRESSURE IN HPA 852.0 848.4 850.0 853.2 849.8 847.2 847.8 848.6 847.2 855.0 855.4 852.2 847.2 DAY 17 7 2 21 27 26 9 31 1 1 6 15 MEAN QNH PRESSURE IN HPA 1016.6 1016.1 1014.6 1014.6 1011.2 1009.4 1010.5 1012.0 1013.0 1018.4 1020.6 1019.2 1014.7 MAX. QNH PRESSURE IN HPA 1024.1 1023.5 1018.9 1018.4 1016.1 1013.8 1016.1 1015.4 1019.3 1022.5 1029.0 1025.5 1029.0 DAY 30 11 21 2 4 17 30 13 29 16 17 17 MIN. QNH PRESSURE IN HPA 1009.5 1005.3 1007.2 1010.8 1006.9 1003.9 1004.6 1005.6 1003.9 1012.9 1013.4 1009.7 1003.9 DAY 17 7 2 21 27 26 9 31 1 1 6 15 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ANAR (40839) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 30 53 N LONGITUDE 55 15 E DATA PROCESSING CENTER ELEVATION 1408.8 M MEANS AND EXTREMES FOR THE YEAR 2000 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 1500 UTC. MEAN QFE PRESSURE IN HPA 858.9 858.3 856.7 856.7 853.4 851.8 852.8 854.1 855.1 860.2 862.5 861.4 856.8 MAX. QFE PRESSURE IN HPA 866.4 864.8 860.2 860.0 857.4 856.0 858.2 857.6 860.6 864.0 870.0 866.4 870.0 DAY 30 10 3 2 5 21 30 23 29 16 17 17 MIN. QFE PRESSURE IN HPA 853.2 849.8 851.0 854.4 849.8 847.0 847.4 848.0 847.0 855.0 855.4 853.0 847.0 DAY 17 7 2 25 27 24 9 31 1 1 6 15 MEAN QNH PRESSURE IN HPA 1017.4 1016.6 1014.8 1014.8 1011.1 1009.2 1010.4 1011.9 1013.0 1018.9 1021.5 1020.2 1015.0 MAX. QNH PRESSURE IN HPA 1026.0 1024.1 1018.9 1018.6 1015.7 1014.0 1016.6 1015.9 1019.3 1023.2 1030.1 1026.0 1030.1 DAY 30 10 3 2 5 21 30 23 29 16 17 17 MIN. QNH PRESSURE IN HPA 1010.8 1006.9 1008.3 1012.2 1006.9 1003.7 1004.2 1004.9 1003.7 1012.9 1013.4 1010.6 1003.7 DAY 17 7 2 25 27 24 9 31 1 1 6 15 MEAN QFF PRESSURE IN HPA 1017.6 1016.0 1011.3 1006.0 998.9 996.5 997.8 1000.1 1002.2 1012.6 1019.6 1019.6 1008.2 MAX. QFF PRESSURE IN HPA 1027.2 1027.8 1018.8 1012.3 1004.8 1002.9 1005.2 1005.1 1009.9 1018.1 1029.1 1028.1 1029.1 DAY 30 10 3 2 4 17 30 23 29 6 17 17 MIN. QFF PRESSURE IN HPA 1008.9 1004.0 1004.2 1001.5 992.8 989.1 989.5 993.5 992.0 1003.0 1009.0 1007.2 989.1 DAY 28 7 24 25 27 25 9 31 1 1 6 15 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 ANAR (40839) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 30 53 N LONGITUDE 55 15 E DATA PROCESSING CENTER ELEVATION 1408.8 M MEANS AND EXTREMES FOR THE YEAR 2001 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AIR TEMPERATURE (C) 6.5 10.1 16.8 24.0 29.1 31.6 34.0 31.2 27.8 22.7 15.1 12.5 21.8 MINIMUN AIR TEMPERATURE (C) -2.9 0.0 6.3 11.3 16.9 19.2 22.7 17.7 15.2 10.9 4.0 5.1 10.5 DAYS WITH MINIMUM TEMP. >=21 0 0 0 0 3 9 24 3 0 0 0 0 39 DAYS WITH MINIMUM TEMP. <=-4 14 2 0 0 0 0 0 0 0 0 1 0 17 DAYS WITH FREEZING MIN.<= 0 24 17 1 0 0 0 0 0 0 0 8 3 53 TEMPERATURE RECORDS LOWEST(C) -12.2 -7.4 0.0 6.0 11.0 15.0 15.0 12.4 11.0 6.0 -4.2 -1.0 -12.2 DAY 30 1 13 15 7 6 31 16 26 12 21 23 MAXIMUM AIR TEMPERATURE (C) 13.0 16.4 22.6 29.8 34.6 36.9 39.2 36.9 34.2 29.4 22.0 17.7 27.7 DAYS WITH MAXIMUM TEMP. >=30 0 0 0 14 31 30 31 31 25 13 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) 20.0 25.0 27.4 33.6 38.6 42.4 43.6 40.4 38.6 34.0 27.6 22.6 43.6 DAY 16 20 31 28 18 30 11 30 7 1 6 20 DIF. BETWEEN (MAX.-MIN.) (C) 15.9 16.4 16.3 18.5 17.7 17.7 16.5 19.2 19.0 18.5 18.0 12.6 17.2 MEAN DAILY TEMP. (MDT) (C) 5.1 8.2 14.5 20.6 25.7 28.0 31.0 27.3 24.7 20.2 13.0 11.4 19.1 COOLING DEG. DAYS(BASE 21 0C) 0.0 0.0 0.0 20.6 147.4 211.3 308.7 195.8 112.6 13.4 0.0 0.0 1009.8 HEATING DEG. DAYS(BASE 18 0C) 401.2 274.4 110.3 1.3 0.0 0.0 0.0 0.0 0.0 4.2 149.5 204.4 1145.3 DEWPOINT (MEAN C) -5.7 -6.2 -2.2 -3.0 2.0 4.0 6.1 2.6 2.8 -0.3 -4.2 2.5 -0.1 MIXING RATIO (G/KG) 3.04 2.94 3.96 3.71 5.31 6.15 7.13 5.60 5.60 4.44 3.40 5.49 4.73 VAPOUR PRESSURE (HPA) 4.18 4.04 5.43 5.09 7.24 8.35 9.65 7.63 7.65 6.11 4.69 7.55 6.47 SATURATION DEF. (HPA) 6.31 9.36 15.02 26.42 34.75 40.40 45.82 40.16 32.27 23.22 13.88 7.56 24.60 RELATIVE HUMIDITY (MEAN %) 46 37 32 18 20 19 19 18 22 24 29 55 28 RELATIVE HUMIDITY (MAX. %) 68 61 54 32 33 31 30 31 35 40 46 77 45 RELATIVE HUMIDITY (MIN. %) 31 23 20 11 13 14 13 12 16 15 19 39 19 RELATIVE HUMIDITY (MEAN% 03UTC) 66 59 54 32 32 31 30 31 35 39 46 74 44 RELATIVE HUMIDITY (MEAN% 09UTC) 39 28 24 13 14 15 15 14 17 18 22 47 22 RELATIVE HUMIDITY (MEAN% 15UTC) 43 34 26 15 17 17 16 15 20 22 28 55 26 RH=0 => RELATIVE HUMIDITY < 0.5% AMOUNT OF PRECIPITATION MM. 7.0 15.6 8.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 36.2 66.8 DAYS WITH PRECIPITATION >=10 0 1 0 0 0 0 0 0 0 0 0 1 2 DAYS WITH PRECIPITATION >= 5 0 1 1 0 0 0 0 0 0 0 0 4 6 DAYS WITH PRECIPITATION >= 1 4 2 2 0 0 0 0 0 0 0 0 6 14 DAYS WITH PRECIPITATION 4 2 2 0 0 0 0 0 0 0 0 6 14 GREATEST DAILY PRECIPITATION 4.0 11.6 6.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 11.0 11.6 DAY 28 11 11 ** ** ** ** ** ** ** ** 13 DAY WITH THUNDER STORM 0 0 0 0 0 0 0 0 0 0 0 0 0 DAYS WITH SNOW OR SLEET 2 1 0 0 0 0 0 0 0 0 0 0 3 DAYS WITH DUST 1 1 1 0 3 3 0 0 0 1 1 0 11 WIND DIRECTION (PREVAILING) 45 225 225 270 270 360 360 360 360 45 180 180 360 PREVAILING WIND SPEED(KNOTS) 7.4 16.4 12.8 11.3 11.9 8.9 8.9 9.7 7.6 8.0 13.9 14.4 8.4 PREVAILING WIND PERCENT 8.4 12.9 14.2 15.3 13.5 16.0 25.8 29.7 12.0 8.4 9.3 13.5 10.4 CALMS PERCENT OF WIND 74.2 59.3 52.3 42.7 40.6 53.3 40.0 51.0 57.3 60.6 69.3 62.6 55.2 NO. OF WIND OBSERVATION 155 140 155 150 155 150 155 155 150 155 150 155 1825 VECTOR WIND DIRECTION (MEAN) 339 246 230 286 281 358 3 5 350 318 216 189 302 VECTOR WIND MAGNITUDE(KNOTS) 0.5 2.9 2.2 2.9 3.4 2.8 3.8 3.8 1.9 1.1 2.3 2.6 1.3 WIND STEADINESES (MEAN %) 21.7 59.2 42.3 54.7 54.8 68.3 73.1 86.4 59.4 33.3 67.6 65.0 30.2 WIND SPEED (MEAN KNOTS) 2.3 4.9 5.2 5.3 6.2 4.1 5.2 4.4 3.2 3.3 3.4 4.0 4.3 FASTEST WIND DIRECTION 240 210 200 280 190 20 180 20 20 270 330 180 190 FASTEST WIND SPEED (KNOTS) 27 33 33 21 39 16 17 17 14 19 27 23 39 DAY 24 21 25 26 6 11 7 6 3 31 24 5 DAYS WITH SKY CLEAR (0-2)/8 20 18 21 19 26 25 26 30 30 28 22 14 279 DAYS WITH P.CLOUDY (3-6)/8 9 8 8 11 4 5 5 1 0 3 7 9 70 DAYS WITH CLOUDY (7-8)/8 2 2 2 0 1 0 0 0 0 0 1 8 16 DAYS WITH VISIBILITY =< 2 KM 0 0 0 0 0 0 0 0 0 1 0 1 2 DURATION OF SUNSHINE HOURS 238.0 240.0 279.6 299.6 330.4 331.4 334.0 360.5 311.3 302.5 251.2 167.5 3446.0 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ANAR (40839) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 30 53 N LONGITUDE 55 15 E DATA PROCESSING CENTER ELEVATION 1408.8 M MEANS AND EXTREMES FOR THE YEAR 2001 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL MEAN QFE PRESSURE IN HPA 861.5 859.7 858.6 857.8 855.7 852.8 851.9 856.1 858.2 861.5 862.1 863.5 858.3 MAX. QFE PRESSURE IN HPA 867.4 868.0 867.8 865.4 861.0 860.4 858.4 861.6 865.8 868.6 869.6 869.4 869.6 DAY-HOUR 29- 6 9- 6 2- 6 1- 6 13- 6 2- 6 29- 6 14- 6 22- 6 10- 6 2- 6 18- 6 MIN. QFE PRESSURE IN HPA 854.2 848.8 848.0 852.0 848.6 847.2 844.8 850.0 852.0 856.0 853.8 855.6 844.8 DAY-HOUR 19-15 21-12 26-12 13-12 25-12 18-15 17-15 27-12 5-15 1-12 17-12 5-12 MEAN QNH PRESSURE IN HPA 1020.4 1018.3 1017.1 1016.2 1013.7 1010.3 1009.3 1014.1 1016.5 1020.3 1021.1 1022.6 1016.7 MAX. QNH PRESSURE IN HPA 1027.1 1027.8 1027.6 1024.8 1019.8 1019.1 1016.8 1020.5 1025.3 1028.5 1029.6 1029.4 1029.6 DAY-HOUR 29- 6 9- 6 2- 6 1- 6 13- 6 2- 6 29- 6 14- 6 22- 6 10- 6 2- 6 18- 6 MIN. QNH PRESSURE IN HPA 1012.0 1005.8 1004.9 1009.5 1005.6 1003.9 1001.2 1007.2 1009.5 1014.0 1011.5 1013.6 1001.2 DAY-HOUR 19-15 21-12 26-12 13-12 25-12 18-15 17-15 27-12 5-15 1-12 17-12 5-12 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 862.1 860.3 859.6 859.1 856.9 854.0 853.1 857.2 859.3 862.4 863.0 863.8 859.2 MAX. QFE PRESSURE IN HPA 865.4 866.8 867.2 864.2 860.4 860.0 858.0 861.0 864.8 867.6 867.4 868.6 868.6 DAY 15 10 2 2 13 2 29 14 22 11 2 18 MIN. QFE PRESSURE IN HPA 857.2 852.2 849.2 854.6 851.6 849.6 848.2 852.8 854.8 858.4 856.6 857.4 848.2 DAY 24 21 26 10 26 18 11 27 6 2 12 5 MEAN QNH PRESSURE IN HPA 1021.0 1019.0 1018.2 1017.6 1015.1 1011.8 1010.7 1015.4 1017.8 1021.4 1022.0 1023.0 1017.8 MAX. QNH PRESSURE IN HPA 1024.8 1026.4 1026.9 1023.5 1019.1 1018.6 1016.3 1019.8 1024.1 1027.4 1027.1 1028.5 1028.5 DAY 15 10 2 2 13 2 29 14 22 11 2 18 MIN. QNH PRESSURE IN HPA 1015.4 1009.7 1006.2 1012.4 1009.0 1006.7 1005.1 1010.4 1012.7 1016.8 1014.7 1015.7 1005.1 DAY 24 21 26 10 26 18 11 27 6 2 12 5 MEAN QFF PRESSURE IN HPA 1022.8 1018.5 1013.7 1009.3 1003.7 998.8 996.4 1003.3 1007.7 1014.3 1019.2 1020.7 1010.7 MAX. QFF PRESSURE IN HPA 1033.2 1029.1 1025.7 1016.6 1008.4 1006.5 1004.8 1009.8 1016.6 1022.4 1027.4 1029.7 1033.2 DAY 29 13 12 3 12 3 31 14 22 11 21 18 MIN. QFF PRESSURE IN HPA 1012.9 1003.1 1001.3 1003.6 996.0 992.5 989.2 996.5 1001.1 1006.9 1008.9 1009.9 989.2 DAY 24 21 26 13 26 30 11 27 1 2 12 5 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ANAR (40839) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 30 53 N LONGITUDE 55 15 E DATA PROCESSING CENTER ELEVATION 1408.8 M MEANS AND EXTREMES FOR THE YEAR 2001 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 0600 UTC. MEAN QFE PRESSURE IN HPA 863.4 861.6 860.6 859.9 857.4 854.3 853.4 857.7 860.1 863.6 864.1 865.1 860.1 MAX. QFE PRESSURE IN HPA 867.4 868.0 867.8 865.4 861.0 860.4 858.4 861.6 865.8 868.6 869.6 869.4 869.6 DAY 29 9 2 1 13 2 29 14 22 10 2 18 MIN. QFE PRESSURE IN HPA 858.2 852.6 849.8 855.4 851.2 850.0 848.8 853.4 855.4 859.6 858.0 858.2 848.8 DAY 27 21 26 10 25 18 11 27 6 1 12 5 MEAN QNH PRESSURE IN HPA 1022.5 1020.5 1019.3 1018.5 1015.7 1012.1 1011.1 1016.0 1018.8 1022.7 1023.3 1024.5 1018.7 MAX. QNH PRESSURE IN HPA 1027.1 1027.8 1027.6 1024.8 1019.8 1019.1 1016.8 1020.5 1025.3 1028.5 1029.6 1029.4 1029.6 DAY 29 9 2 1 13 2 29 14 22 10 2 18 MIN. QNH PRESSURE IN HPA 1016.6 1010.1 1006.9 1013.4 1008.5 1007.2 1005.8 1011.1 1013.4 1018.2 1016.3 1016.6 1005.8 DAY 27 21 26 10 25 18 11 27 6 1 12 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 861.5 860.0 858.9 858.1 855.9 853.0 852.2 856.4 858.4 861.5 861.9 863.3 858.4 MAX. QFE PRESSURE IN HPA 866.6 866.8 866.0 864.2 859.2 859.0 857.2 860.4 863.8 866.8 867.8 867.0 867.8 DAY 29 9 1 1 13 2 29 14 22 10 2 9 MIN. QFE PRESSURE IN HPA 856.0 851.0 849.4 853.8 850.2 849.0 847.6 851.5 854.0 857.8 855.6 856.6 847.6 DAY 27 21 26 10 25 18 11 27 6 1 17 5 MEAN QNH PRESSURE IN HPA 1020.4 1018.7 1017.4 1016.5 1013.9 1010.6 1009.7 1014.5 1016.8 1020.3 1020.8 1022.5 1016.8 MAX. QNH PRESSURE IN HPA 1026.2 1026.4 1025.5 1023.5 1017.7 1017.5 1015.4 1019.1 1023.0 1026.4 1027.6 1026.7 1027.6 DAY 29 9 1 1 13 2 29 14 22 10 2 9 MIN. QNH PRESSURE IN HPA 1014.0 1008.3 1006.5 1011.5 1007.4 1006.0 1004.4 1008.9 1011.8 1016.1 1013.6 1014.7 1004.4 DAY 27 21 26 10 25 18 11 27 6 1 17 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 860.0 858.2 856.9 856.1 854.2 851.4 850.5 854.7 856.6 859.8 860.5 862.2 856.8 MAX. QFE PRESSURE IN HPA 865.0 865.0 864.2 861.8 857.4 857.6 855.6 858.6 862.4 866.0 866.4 866.0 866.4 DAY 29 9 1 2 13 2 28 14 22 10 2 17 MIN. QFE PRESSURE IN HPA 854.8 848.8 848.0 852.0 848.6 847.8 845.6 850.0 852.4 856.0 853.8 855.6 845.6 DAY 19 21 26 13 25 17 11 27 5 1 17 5 MEAN QNH PRESSURE IN HPA 1018.6 1016.6 1015.1 1014.2 1012.0 1008.7 1007.7 1012.6 1014.7 1018.5 1019.2 1021.1 1014.9 MAX. QNH PRESSURE IN HPA 1024.4 1024.4 1023.5 1020.7 1015.7 1015.9 1013.6 1017.0 1021.4 1025.5 1026.0 1025.5 1026.0 DAY 29 9 1 2 13 2 28 14 22 10 2 17 MIN. QNH PRESSURE IN HPA 1012.7 1005.8 1004.9 1009.5 1005.6 1004.6 1002.1 1007.2 1009.9 1014.0 1011.5 1013.6 1002.1 DAY 19 21 26 13 25 17 11 27 5 1 17 5 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ANAR (40839) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 30 53 N LONGITUDE 55 15 E DATA PROCESSING CENTER ELEVATION 1408.8 M MEANS AND EXTREMES FOR THE YEAR 2001 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 1500 UTC. MEAN QFE PRESSURE IN HPA 860.7 858.5 857.2 856.1 854.1 851.1 850.3 854.4 856.6 860.1 861.3 862.9 856.9 MAX. QFE PRESSURE IN HPA 865.6 865.6 864.8 861.8 857.4 857.0 855.6 858.6 862.4 866.6 866.8 868.0 868.0 DAY 29 9 1 2 13 2 28 14 22 10 2 17 MIN. QFE PRESSURE IN HPA 854.2 849.4 849.4 852.0 848.6 847.2 844.8 850.0 852.0 856.4 855.4 857.2 844.8 DAY 19 21 26 13 25 18 17 27 5 1 17 5 MEAN QNH PRESSURE IN HPA 1019.4 1016.9 1015.5 1014.2 1011.9 1008.4 1007.5 1012.2 1014.7 1018.8 1020.1 1022.0 1015.1 MAX. QNH PRESSURE IN HPA 1025.1 1025.1 1024.1 1020.7 1015.7 1015.2 1013.6 1017.0 1021.4 1026.2 1026.4 1027.8 1027.8 DAY 29 9 1 2 13 2 28 14 22 10 2 17 MIN. QNH PRESSURE IN HPA 1012.0 1006.5 1006.5 1009.5 1005.6 1003.9 1001.2 1007.2 1009.5 1014.5 1013.4 1015.4 1001.2 DAY 19 21 26 13 25 18 17 27 5 1 17 5 MEAN QFF PRESSURE IN HPA 1021.1 1016.2 1010.9 1005.8 1000.3 995.3 993.2 1000.0 1004.5 1011.6 1017.3 1019.5 1008.0 MAX. QFF PRESSURE IN HPA 1032.2 1026.4 1022.0 1013.6 1005.3 1002.7 1002.0 1006.8 1013.7 1020.6 1025.9 1027.3 1032.2 DAY 29 9 1 2 5 2 31 14 22 10 20 17 MIN. QFF PRESSURE IN HPA 1012.6 1000.6 1000.0 1000.5 993.1 989.4 985.9 993.1 997.1 1004.9 1007.9 1009.7 985.9 DAY 19 21 25 28 25 18 11 27 5 1 17 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 2006,MAY M.(S & A) STATION ANAR (40839) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 30 53 N LONGITUDE 55 15 E DATA PROCESSING CENTER ELEVATION 1408.8 M MEANS AND EXTREMES FOR THE YEAR 2002 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AIR TEMPERATURE (C) 8.3 11.6 16.9 21.9 28.1 31.7 33.0 32.6 28.3 22.4 13.1 9.4 21.4 MINIMUN AIR TEMPERATURE (C) 0.3 2.4 6.4 11.3 15.1 19.6 20.9 19.3 14.3 9.1 4.0 0.4 10.3 DAYS WITH MINIMUM TEMP. >=21 0 0 0 0 2 9 18 8 0 0 0 0 37 DAYS WITH MINIMUM TEMP. <=-4 5 1 0 0 0 0 0 0 0 0 0 11 17 DAYS WITH FREEZING MIN.<= 0 16 14 5 0 0 0 0 0 0 0 8 17 60 TEMPERATURE RECORDS LOWEST(C) -6.4 -5.0 -2.4 4.0 9.4 14.0 18.0 16.0 11.2 4.8 -3.0 -9.0 -9.0 DAY 27 5 8 1 7 1 31 1 30 29 24 31 MAXIMUM AIR TEMPERATURE (C) 13.6 17.4 23.1 27.1 34.0 37.1 38.3 38.6 35.1 29.5 19.0 15.3 27.3 DAYS WITH MAXIMUM TEMP. >=30 0 0 0 9 28 30 31 31 29 12 0 0 170 DAYS WITH MAXIMUM TEMP. <= 0 0 0 0 0 0 0 0 0 0 0 0 0 0 TEMPERATURE RECORDS HIGHEST(C) 19.4 22.8 28.0 34.4 38.2 41.0 41.8 40.6 37.6 33.4 26.8 22.6 41.8 DAY 2 26 14 29 25 30 19 19 5 6 1 11 DIF. BETWEEN (MAX.-MIN.) (C) 13.3 15.0 16.7 15.8 18.9 17.5 17.4 19.3 20.8 20.4 15.0 14.9 17.0 MEAN DAILY TEMP. (MDT) (C) 7.0 9.9 14.7 19.2 24.5 28.3 29.6 29.0 24.7 19.3 11.5 7.9 18.8 COOLING DEG. DAYS(BASE 21 0C) 0.0 0.0 0.0 21.6 110.6 219.1 266.4 246.6 110.8 5.9 0.0 0.0 981.0 HEATING DEG. DAYS(BASE 18 0C) 342.1 226.0 110.8 29.2 0.0 0.0 0.0 0.0 0.0 10.9 196.4 313.9 1229.3 DEWPOINT (MEAN C) -3.4 -5.0 -5.6 -0.4 1.0 2.6 6.1 5.7 0.9 -2.7 0.2 -4.5 -0.4 MIXING RATIO (G/KG) 3.62 3.32 3.15 4.53 4.89 5.51 7.03 6.88 4.88 3.71 4.74 3.38 4.64 VAPOUR PRESSURE (HPA) 4.97 4.56 4.33 6.19 6.68 7.50 9.53 9.34 6.68 5.11 6.52 4.65 6.34 SATURATION DEF. (HPA) 6.80 10.08 16.26 21.69 33.17 41.19 42.67 42.35 34.51 24.06 9.59 8.08 24.20 RELATIVE HUMIDITY (MEAN %) 48 35 24 26 19 17 20 20 18 21 46 40 28 RELATIVE HUMIDITY (MAX. %) 70 57 46 45 34 28 31 32 31 35 69 57 45 RELATIVE HUMIDITY (MIN. %) 31 21 14 16 12 12 15 14 12 12 31 28 18 RELATIVE HUMIDITY (MEAN% 03UTC) 67 54 44 45 34 27 31 32 31 35 68 57 44 RELATIVE HUMIDITY (MEAN% 09UTC) 39 26 17 19 14 14 16 16 13 14 35 32 21 RELATIVE HUMIDITY (MEAN% 15UTC) 46 34 20 22 16 15 17 17 17 20 44 39 26 RH=0 => RELATIVE HUMIDITY < 0.5% AMOUNT OF PRECIPITATION MM. 36.6 3.8 0.8 1.4 0.0 0.0 0.0 0.0 0.0 0.0 7.4 1.0 51.0 DAYS WITH PRECIPITATION >=10 2 0 0 0 0 0 0 0 0 0 0 0 2 DAYS WITH PRECIPITATION >= 5 2 0 0 0 0 0 0 0 0 0 0 0 2 DAYS WITH PRECIPITATION >= 1 2 1 0 1 0 0 0 0 0 0 4 1 9 DAYS WITH PRECIPITATION 3 3 1 2 0 0 0 0 0 0 5 1 15 GREATEST DAILY PRECIPITATION 24.0 2.6 0.8 1.0 0.0 0.0 0.0 0.0 0.0 0.0 2.0 1.0 24.0 DAY 12 15 26 4 ** ** ** ** ** ** 2 2 DAY WITH THUNDER STORM 0 0 1 0 1 0 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 1 3 4 1 0 0 2 0 0 1 0 12 WIND DIRECTION (PREVAILING) 225 225 225 225 270 360 45 45 45 45 315 225 225 PREVAILING WIND SPEED(KNOTS) 13.9 12.7 17.7 13.5 11.0 8.9 8.3 8.1 7.1 7.4 12.1 19.7 14.9 PREVAILING WIND PERCENT 17.4 15.7 16.8 18.0 18.1 12.7 20.6 16.1 14.7 9.0 8.0 21.9 9.4 CALMS PERCENT OF WIND 51.6 48.6 47.1 34.0 45.8 44.7 43.2 58.1 68.0 80.0 68.0 52.9 53.5 NO. OF WIND OBSERVATION 155 140 155 150 155 150 155 155 150 155 150 155 1825 VECTOR WIND DIRECTION (MEAN) 228 229 236 238 286 335 10 13 18 32 327 232 273 VECTOR WIND MAGNITUDE(KNOTS) 3.0 3.4 3.5 5.3 3.4 2.4 3.4 2.2 1.9 0.8 1.7 4.3 1.6 WIND STEADINESES (MEAN %) 55.6 54.0 53.0 67.1 61.8 47.1 69.4 68.7 79.2 47.1 45.9 58.1 32.0 WIND SPEED (MEAN KNOTS) 5.4 6.3 6.6 7.9 5.5 5.1 4.9 3.2 2.4 1.7 3.7 7.4 5.0 FASTEST WIND DIRECTION 210 190 210 210 210 190 270 30 360 340 310 210 210 FASTEST WIND SPEED (KNOTS) 29 27 29 27 33 29 16 14 16 27 25 31 33 DAY 8 20 21 3 4 27 25 5 24 22 13 21 DAYS WITH SKY CLEAR (0-2)/8 21 17 19 13 25 27 29 29 30 28 17 19 274 DAYS WITH P.CLOUDY (3-6)/8 8 9 11 14 5 3 2 2 0 3 11 9 77 DAYS WITH CLOUDY (7-8)/8 2 2 1 3 1 0 0 0 0 0 2 3 14 DAYS WITH VISIBILITY =< 2 KM 0 1 1 0 1 0 0 0 0 0 0 0 3 DURATION OF SUNSHINE HOURS 224.8 207.0 269.0 250.6 338.8 335.2 354.3 345.3 320.2 304.2 215.4 225.7 3390.5 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ANAR (40839) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 30 53 N LONGITUDE 55 15 E DATA PROCESSING CENTER ELEVATION 1408.8 M MEANS AND EXTREMES FOR THE YEAR 2002 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL MEAN QFE PRESSURE IN HPA 861.1 860.9 859.5 857.0 856.5 854.3 854.0 853.7 859.0 862.0 863.2 860.8 858.5 MAX. QFE PRESSURE IN HPA 869.8 870.2 871.6 865.6 862.2 859.6 859.2 858.6 864.4 867.4 871.6 869.6 871.6 DAY-HOUR 26- 6 6- 6 11- 6 1- 6 10- 6 25- 3 31- 6 1- 6 23- 6 10- 6 18- 6 3- 6 MIN. QFE PRESSURE IN HPA 853.2 853.2 852.6 849.6 851.6 846.2 848.6 847.6 853.6 858.0 856.2 851.0 846.2 DAY-HOUR 21-12 20-12 22-12 4- 3 13-12 20-15 23-15 17-12 18-12 14-12 6-12 22-12 MEAN QNH PRESSURE IN HPA 1019.9 1019.7 1018.0 1015.1 1014.6 1012.1 1011.7 1011.4 1017.5 1020.9 1022.3 1019.5 1016.9 MAX. QNH PRESSURE IN HPA 1029.9 1030.3 1031.9 1025.1 1021.2 1018.2 1017.7 1017.0 1023.7 1027.1 1031.9 1029.6 1031.9 DAY-HOUR 26- 6 6- 6 11- 6 1- 6 10- 6 25- 3 31- 6 1- 6 23- 6 10- 6 18- 6 3- 6 MIN. QNH PRESSURE IN HPA 1010.8 1010.8 1010.1 1006.7 1009.0 1002.8 1005.6 1004.4 1011.3 1016.3 1014.3 1008.3 1002.8 DAY-HOUR 21-12 20-12 22-12 4- 3 13-12 20-15 23-15 17-12 18-12 14-12 6-12 22-12 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 861.4 861.4 860.3 858.1 857.7 855.6 855.1 854.7 859.9 862.8 863.9 861.3 859.3 MAX. QFE PRESSURE IN HPA 867.8 868.8 870.2 864.2 861.2 859.6 859.0 858.2 863.4 866.4 870.8 868.2 870.8 DAY 26 6 11 1 10 25 31 1 23 10 18 30 MIN. QFE PRESSURE IN HPA 854.0 856.0 855.4 849.6 854.2 850.0 852.2 850.8 856.0 860.4 858.8 852.4 849.6 DAY 22 25 29 4 13 21 23 17 18 15 26 22 MEAN QNH PRESSURE IN HPA 1020.2 1020.3 1019.0 1016.4 1016.0 1013.6 1013.0 1012.6 1018.5 1021.8 1023.1 1020.1 1017.9 MAX. QNH PRESSURE IN HPA 1027.6 1028.7 1030.3 1023.5 1020.0 1018.2 1017.5 1016.6 1022.5 1026.0 1031.0 1028.0 1031.0 DAY 26 6 11 1 10 25 31 1 23 10 18 30 MIN. QNH PRESSURE IN HPA 1011.8 1014.0 1013.4 1006.7 1012.0 1007.2 1009.7 1008.1 1014.0 1019.1 1017.3 1009.9 1006.7 DAY 22 25 29 4 13 21 23 17 18 15 26 22 MEAN QFF PRESSURE IN HPA 1020.3 1018.8 1014.6 1008.9 1005.3 1000.7 999.4 999.6 1008.5 1015.4 1020.9 1020.2 1011.0 MAX. QFF PRESSURE IN HPA 1030.4 1031.5 1030.6 1019.1 1009.8 1006.1 1006.2 1005.3 1014.9 1018.8 1031.2 1031.5 1031.5 DAY 26 5 11 1 9 25 31 1 30 10 18 5 MIN. QFF PRESSURE IN HPA 1009.7 1007.5 1005.5 1002.2 1000.0 993.3 995.3 992.9 1003.8 1009.0 1011.7 1005.0 992.9 DAY 8 25 21 20 20 21 25 18 6 15 13 22 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ANAR (40839) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 30 53 N LONGITUDE 55 15 E DATA PROCESSING CENTER ELEVATION 1408.8 M MEANS AND EXTREMES FOR THE YEAR 2002 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 0600 UTC. MEAN QFE PRESSURE IN HPA 862.8 862.7 861.4 858.6 858.2 856.0 855.5 855.2 860.7 863.8 865.0 862.6 860.2 MAX. QFE PRESSURE IN HPA 869.8 870.2 871.6 865.6 862.2 859.6 859.2 858.6 864.4 867.4 871.6 869.6 871.6 DAY 26 6 11 1 10 25 31 1 23 10 18 3 MIN. QFE PRESSURE IN HPA 855.4 857.4 856.0 850.0 854.6 850.0 852.2 850.8 856.4 861.6 859.2 853.4 850.0 DAY 22 25 29 4 13 21 23 17 18 14 13 22 MEAN QNH PRESSURE IN HPA 1021.8 1021.8 1020.2 1017.1 1016.6 1014.0 1013.5 1013.2 1019.4 1023.0 1024.3 1021.6 1018.9 MAX. QNH PRESSURE IN HPA 1029.9 1030.3 1031.9 1025.1 1021.2 1018.2 1017.7 1017.0 1023.7 1027.1 1031.9 1029.6 1031.9 DAY 26 6 11 1 10 25 31 1 23 10 18 3 MIN. QNH PRESSURE IN HPA 1013.4 1015.7 1014.0 1007.2 1012.4 1007.2 1009.7 1008.1 1014.5 1020.5 1017.7 1011.1 1007.2 DAY 22 25 29 4 13 21 23 17 18 14 13 22 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 861.0 861.2 859.7 857.2 856.9 854.6 854.4 854.1 859.4 862.1 863.1 860.7 858.7 MAX. QFE PRESSURE IN HPA 868.0 868.4 869.8 864.2 860.6 859.0 858.2 857.8 862.8 865.8 870.0 867.8 870.0 DAY 26 6 11 1 10 25 30 1 23 10 18 3 MIN. QFE PRESSURE IN HPA 854.8 856.4 855.2 850.0 853.0 848.6 850.8 849.6 855.2 859.6 857.8 852.0 848.6 DAY 22 20 22 4 13 21 24 17 18 15 13 22 MEAN QNH PRESSURE IN HPA 1019.8 1020.0 1018.3 1015.4 1015.0 1012.5 1012.2 1011.8 1017.9 1021.0 1022.2 1019.4 1017.1 MAX. QNH PRESSURE IN HPA 1027.8 1028.3 1029.9 1023.5 1019.3 1017.5 1016.6 1016.1 1021.8 1025.3 1030.1 1027.6 1030.1 DAY 26 6 11 1 10 25 30 1 23 10 18 3 MIN. QNH PRESSURE IN HPA 1012.7 1014.5 1013.1 1007.2 1010.6 1005.6 1008.1 1006.7 1013.1 1018.2 1016.1 1009.5 1005.6 DAY 22 20 22 4 13 21 24 17 18 15 13 22 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 859.8 859.3 857.8 855.4 855.0 852.7 852.7 852.3 857.7 860.5 861.7 859.4 857.0 MAX. QFE PRESSURE IN HPA 866.8 866.4 868.2 862.0 858.2 857.8 856.8 856.0 861.6 864.4 868.6 867.2 868.6 DAY 26 5 11 1 9 25 30 1 29 10 18 3 MIN. QFE PRESSURE IN HPA 853.2 853.2 852.6 849.6 851.6 846.6 849.0 847.6 853.6 858.0 856.2 851.0 846.6 DAY 21 20 22 4 13 20 24 17 18 14 6 22 MEAN QNH PRESSURE IN HPA 1018.4 1017.9 1016.1 1013.3 1012.9 1010.3 1010.2 1009.8 1016.0 1019.2 1020.6 1017.9 1015.2 MAX. QNH PRESSURE IN HPA 1026.4 1026.0 1028.0 1020.9 1016.6 1016.1 1015.0 1014.0 1020.5 1023.7 1028.5 1026.9 1028.5 DAY 26 5 11 1 9 25 30 1 29 10 18 3 MIN. QNH PRESSURE IN HPA 1010.8 1010.8 1010.1 1006.7 1009.0 1003.3 1006.0 1004.4 1011.3 1016.3 1014.3 1008.3 1003.3 DAY 21 20 22 4 13 20 24 17 18 14 6 22 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ANAR (40839) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 30 53 N LONGITUDE 55 15 E DATA PROCESSING CENTER ELEVATION 1408.8 M MEANS AND EXTREMES FOR THE YEAR 2002 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 1500 UTC. MEAN QFE PRESSURE IN HPA 860.5 859.9 858.2 855.6 854.9 852.5 852.3 852.3 857.7 860.9 862.4 860.0 857.3 MAX. QFE PRESSURE IN HPA 866.8 867.0 868.2 862.2 858.0 856.8 856.8 855.6 861.8 865.0 868.6 867.8 868.6 DAY 26 6 11 1 9 25 30 1 23 10 18 3 MIN. QFE PRESSURE IN HPA 853.6 855.4 853.2 849.6 851.6 846.2 848.6 847.6 853.6 858.4 857.6 852.2 846.2 DAY 21 25 22 4 13 20 23 17 18 14 6 21 MEAN QNH PRESSURE IN HPA 1019.2 1018.5 1016.6 1013.6 1012.8 1010.0 1009.8 1009.8 1016.0 1019.7 1021.4 1018.7 1015.5 MAX. QNH PRESSURE IN HPA 1026.4 1026.7 1028.0 1021.2 1016.3 1015.0 1015.0 1013.6 1020.7 1024.4 1028.5 1027.6 1028.5 DAY 26 6 11 1 9 25 30 1 23 10 18 3 MIN. QNH PRESSURE IN HPA 1011.3 1013.4 1010.8 1006.7 1009.0 1002.8 1005.6 1004.4 1011.3 1016.8 1015.9 1009.7 1002.8 DAY 21 25 22 4 13 20 23 17 18 14 6 21 MEAN QFF PRESSURE IN HPA 1019.3 1016.9 1012.1 1006.0 1001.9 997.0 996.1 996.6 1005.9 1013.1 1019.1 1018.6 1008.5 MAX. QFF PRESSURE IN HPA 1029.3 1028.8 1028.2 1016.5 1006.6 1003.0 1003.3 1001.7 1013.4 1017.4 1028.6 1029.1 1029.3 DAY 27 5 11 1 9 25 30 1 30 10 18 4 MIN. QFF PRESSURE IN HPA 1010.3 1006.9 1004.1 999.6 996.8 988.8 991.5 989.3 1000.8 1009.0 1011.8 1004.9 988.8 DAY 8 25 29 21 20 20 24 17 18 15 13 21 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 ANAR (40839) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 30 53 N LONGITUDE 55 15 E DATA PROCESSING CENTER ELEVATION 1408.8 M MEANS AND EXTREMES FOR THE YEAR 2003 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AIR TEMPERATURE (C) 8.6 13.0 15.8 22.6 25.1 32.4 35.5 31.3 27.4 22.5 12.9 9.1 21.4 MINIMUN AIR TEMPERATURE (C) 0.1 4.1 6.7 11.8 13.2 19.8 23.6 18.3 14.4 10.3 2.1 0.5 10.4 DAYS WITH MINIMUM TEMP. >=21 0 0 0 0 0 12 26 4 0 0 0 0 42 DAYS WITH MINIMUM TEMP. <=-4 5 1 1 0 0 0 0 0 0 0 7 6 20 DAYS WITH FREEZING MIN.<= 0 19 8 4 0 0 0 0 0 0 0 10 17 58 TEMPERATURE RECORDS LOWEST(C) -6.0 -5.2 -5.0 4.6 5.6 14.0 19.4 14.0 9.2 6.8 -6.0 -11.6 -11.6 DAY 21 1 3 2 2 8 12 10 28 16 27 14 MAXIMUM AIR TEMPERATURE (C) 14.9 19.0 21.8 28.4 30.7 38.0 40.9 37.1 33.9 29.2 19.7 15.3 27.4 DAYS WITH MAXIMUM TEMP. >=30 0 0 0 11 19 30 31 31 28 5 0 0 155 DAYS WITH MAXIMUM TEMP. <= 0 0 0 0 0 0 0 0 0 0 0 0 0 0 TEMPERATURE RECORDS HIGHEST(C) 23.2 24.6 28.0 34.4 35.0 41.4 42.2 42.2 37.4 33.6 27.4 23.6 42.2 DAY 13 25 12 28 23 29 29 1 11 4 1 19 DIF. BETWEEN (MAX.-MIN.) (C) 14.8 14.9 15.1 16.6 17.5 18.2 17.3 18.8 19.5 18.9 17.6 14.8 17.0 MEAN DAILY TEMP. (MDT) (C) 7.5 11.5 14.3 20.1 22.0 28.9 32.2 27.7 24.1 19.7 10.9 7.9 18.9 COOLING DEG. DAYS(BASE 21 0C) 0.0 0.0 0.0 22.9 58.9 237.6 348.4 207.9 97.6 15.1 0.0 0.0 988.4 HEATING DEG. DAYS(BASE 18 0C) 325.3 182.2 125.1 15.0 7.6 0.0 0.0 0.0 0.0 2.5 214.1 312.4 1184.2 DEWPOINT (MEAN C) -5.4 -4.2 -3.3 0.3 -0.9 2.3 7.4 4.4 1.6 -1.4 -5.3 -4.3 -0.7 MIXING RATIO (G/KG) 3.19 3.45 3.80 4.74 4.36 5.38 7.80 6.32 5.10 4.09 3.22 3.52 4.58 VAPOUR PRESSURE (HPA) 4.39 4.72 5.21 6.49 5.96 7.31 10.53 8.59 6.98 5.63 4.44 4.84 6.26 SATURATION DEF. (HPA) 7.62 11.31 14.09 22.62 27.70 43.64 49.47 39.57 31.87 23.43 11.90 7.84 24.25 RELATIVE HUMIDITY (MEAN %) 44 34 31 27 20 16 19 20 21 22 31 43 27 RELATIVE HUMIDITY (MAX. %) 63 56 51 47 36 29 33 33 36 38 51 63 45 RELATIVE HUMIDITY (MIN. %) 29 20 19 16 12 10 13 14 13 14 19 29 17 RELATIVE HUMIDITY (MEAN% 03UTC) 59 53 51 46 36 29 33 33 36 38 50 62 44 RELATIVE HUMIDITY (MEAN% 09UTC) 37 25 24 19 14 12 14 15 15 16 23 34 21 RELATIVE HUMIDITY (MEAN% 15UTC) 41 31 25 22 16 13 16 17 18 20 28 42 24 RH=0 => RELATIVE HUMIDITY < 0.5% AMOUNT OF PRECIPITATION MM. 17.6 7.2 7.0 0.9 0.0 0.0 0.0 0.0 0.0 0.0 0.0 3.0 35.7 DAYS WITH PRECIPITATION >=10 0 0 0 0 0 0 0 0 0 0 0 0 0 DAYS WITH PRECIPITATION >= 5 2 1 0 0 0 0 0 0 0 0 0 0 3 DAYS WITH PRECIPITATION >= 1 5 2 4 0 0 0 0 0 0 0 0 1 12 DAYS WITH PRECIPITATION 6 2 4 2 0 0 0 0 0 0 0 1 15 GREATEST DAILY PRECIPITATION 6.0 5.2 3.0 0.6 0.0 0.0 0.0 0.0 0.0 0.0 0.0 3.0 6.0 DAY 17 5 14 14 ** ** ** ** ** ** ** 6 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 0 3 2 3 4 6 1 0 0 0 0 2 21 WIND DIRECTION (PREVAILING) 225 225 225 225 45 45 45 45 45 45 225 225 45 PREVAILING WIND SPEED(KNOTS) 18.9 23.0 22.7 18.2 11.0 10.9 10.7 11.4 9.6 9.4 14.6 19.8 10.6 PREVAILING WIND PERCENT 18.7 23.6 27.1 24.0 27.7 20.0 20.0 34.2 19.3 12.9 8.7 15.5 14.8 CALMS PERCENT OF WIND 64.5 35.0 33.5 34.0 34.8 41.3 51.0 41.3 59.3 58.1 68.7 61.3 48.7 NO. OF WIND OBSERVATION 155 140 155 150 155 150 155 155 150 155 150 155 1825 VECTOR WIND DIRECTION (MEAN) 238 252 246 251 360 1 85 19 15 13 295 242 294 VECTOR WIND MAGNITUDE(KNOTS) 3.7 7.8 7.6 3.7 4.7 3.9 1.6 5.5 3.1 0.8 1.1 2.1 1.8 WIND STEADINESES (MEAN %) 68.5 66.1 64.4 39.8 60.3 57.4 29.1 85.9 73.8 18.2 31.4 36.8 26.1 WIND SPEED (MEAN KNOTS) 5.4 11.8 11.8 9.3 7.8 6.8 5.5 6.4 4.2 4.4 3.5 5.7 6.9 FASTEST WIND DIRECTION 220 260 240 210 300 350 220 360 360 300 220 210 210 FASTEST WIND SPEED (KNOTS) 35 39 39 49 39 27 25 19 19 19 29 54 54 DAY 28 19 12 22 8 15 7 9 3 5 20 6 DAYS WITH SKY CLEAR (0-2)/8 14 17 16 15 24 28 25 31 30 30 21 18 269 DAYS WITH P.CLOUDY (3-6)/8 8 9 10 10 7 2 6 0 0 1 8 9 70 DAYS WITH CLOUDY (7-8)/8 9 2 5 5 0 0 0 0 0 0 1 4 26 DAYS WITH VISIBILITY =< 2 KM 0 1 0 0 0 1 0 0 0 0 0 2 4 DURATION OF SUNSHINE HOURS 189.4 233.8 235.8 237.2 313.3 326.3 320.7 355.3 317.0 300.5 250.3 205.5 3285.1 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ANAR (40839) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 30 53 N LONGITUDE 55 15 E DATA PROCESSING CENTER ELEVATION 1408.8 M MEANS AND EXTREMES FOR THE YEAR 2003 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL MEAN QFE PRESSURE IN HPA 861.1 857.5 858.4 858.8 858.3 853.2 850.7 855.1 857.9 861.8 862.9 863.4 858.3 MAX. QFE PRESSURE IN HPA 869.2 865.8 868.6 866.2 865.6 860.2 857.6 859.1 865.2 866.8 873.2 872.3 873.2 DAY-HOUR 12- 6 6- 6 3- 6 8- 6 2- 6 1- 3 3- 6 4- 6 27- 6 16- 6 25- 6 12- 6 MIN. QFE PRESSURE IN HPA 851.2 849.2 851.0 853.0 850.6 845.0 844.0 849.3 851.8 857.2 854.5 855.0 844.0 DAY-HOUR 28-12 19-12 13-12 17-12 29-12 30-15 25-15 1-12 10-12 1-12 14-12 6- 9 MEAN QNH PRESSURE IN HPA 1019.9 1015.8 1016.8 1017.3 1016.7 1010.8 1007.9 1013.1 1016.2 1020.7 1022.0 1022.6 1016.6 MAX. QNH PRESSURE IN HPA 1029.2 1025.3 1028.5 1025.7 1025.1 1018.9 1015.9 1017.6 1024.6 1026.4 1033.8 1032.7 1033.8 DAY-HOUR 12- 6 6- 6 3- 6 8- 6 2- 6 1- 3 3- 6 4- 6 27- 6 16- 6 25- 6 12- 6 MIN. QNH PRESSURE IN HPA 1008.5 1006.2 1008.3 1010.6 1007.8 1001.4 1000.3 1006.4 1009.2 1015.4 1012.3 1012.9 1000.3 DAY-HOUR 28-12 19-12 13-12 17-12 29-12 30-15 25-15 1-12 10-12 1-12 14-12 6- 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 861.6 858.2 859.2 859.7 859.6 854.7 851.8 856.1 858.8 862.5 863.6 863.9 859.1 MAX. QFE PRESSURE IN HPA 867.8 864.0 868.4 865.2 864.8 860.2 857.2 858.7 864.6 866.1 871.0 870.8 871.0 DAY 12 6 3 8 2 1 3 4 27 16 25 12 MIN. QFE PRESSURE IN HPA 854.0 850.2 853.6 855.2 855.5 848.6 847.2 851.1 854.8 858.6 857.8 857.7 847.2 DAY 29 19 27 14 29 30 26 1 7 1 14 28 MEAN QNH PRESSURE IN HPA 1020.4 1016.6 1017.7 1018.3 1018.2 1012.5 1009.3 1014.1 1017.2 1021.5 1022.8 1023.1 1017.6 MAX. QNH PRESSURE IN HPA 1027.6 1023.2 1028.3 1024.6 1024.1 1018.9 1015.4 1017.1 1023.9 1025.6 1031.3 1031.0 1031.3 DAY 12 6 3 8 2 1 3 4 27 16 25 12 MIN. QNH PRESSURE IN HPA 1011.8 1007.4 1011.3 1013.1 1013.5 1005.6 1003.9 1008.4 1012.7 1017.0 1016.1 1016.0 1003.9 DAY 29 19 27 14 29 30 26 1 7 1 14 28 MEAN QFF PRESSURE IN HPA 1020.5 1014.1 1013.5 1010.6 1009.0 999.4 994.2 1001.9 1007.5 1014.7 1021.2 1023.3 1010.8 MAX. QFF PRESSURE IN HPA 1029.1 1025.1 1032.1 1016.9 1019.6 1007.1 1001.1 1005.7 1015.8 1020.7 1033.8 1038.2 1038.2 DAY 12 7 3 3 2 1 3 31 28 16 26 13 MIN. QFF PRESSURE IN HPA 1008.4 1005.4 1003.8 1004.5 1002.7 990.3 987.5 992.9 1000.4 1007.5 1010.9 1011.3 987.5 DAY 29 19 21 14 23 30 26 1 12 1 2 28 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ANAR (40839) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 30 53 N LONGITUDE 55 15 E DATA PROCESSING CENTER ELEVATION 1408.8 M MEANS AND EXTREMES FOR THE YEAR 2003 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 0600 UTC. MEAN QFE PRESSURE IN HPA 862.8 859.3 860.4 860.5 860.1 854.9 852.1 856.7 859.7 863.7 864.8 865.2 860.0 MAX. QFE PRESSURE IN HPA 869.2 865.8 868.6 866.2 865.6 860.2 857.6 859.1 865.2 866.8 873.2 872.3 873.2 DAY 12 6 3 8 2 1 3 4 27 16 25 12 MIN. QFE PRESSURE IN HPA 855.6 851.0 854.6 856.0 855.0 848.6 847.6 851.5 855.2 860.0 858.4 859.0 847.6 DAY 29 19 13 14 29 30 26 1 7 1 14 6 MEAN QNH PRESSURE IN HPA 1021.8 1017.8 1019.0 1019.2 1018.7 1012.8 1009.6 1014.8 1018.3 1022.9 1024.2 1024.5 1018.6 MAX. QNH PRESSURE IN HPA 1029.2 1025.3 1028.5 1025.7 1025.1 1018.9 1015.9 1017.6 1024.6 1026.4 1033.8 1032.7 1033.8 DAY 12 6 3 8 2 1 3 4 27 16 25 12 MIN. QNH PRESSURE IN HPA 1013.6 1008.3 1012.4 1014.0 1012.9 1005.6 1004.4 1008.9 1013.1 1018.6 1016.8 1017.5 1004.4 DAY 29 19 13 14 29 30 26 1 7 1 14 6 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 861.1 857.7 858.8 859.0 858.6 853.5 850.8 855.5 858.2 861.9 862.9 863.1 858.4 MAX. QFE PRESSURE IN HPA 867.4 864.8 866.6 864.4 863.8 858.8 856.6 857.8 864.0 865.0 870.9 870.7 870.9 DAY 12 6 2 8 2 1 3 5 27 15 25 12 MIN. QFE PRESSURE IN HPA 854.6 849.8 852.6 855.0 853.0 847.0 846.0 850.7 853.8 858.6 856.5 855.0 846.0 DAY 28 19 13 17 29 30 26 1 7 1 14 6 MEAN QNH PRESSURE IN HPA 1019.9 1016.0 1017.3 1017.5 1017.0 1011.2 1008.1 1013.5 1016.6 1020.8 1022.0 1022.2 1016.8 MAX. QNH PRESSURE IN HPA 1027.1 1024.1 1026.2 1023.7 1023.0 1017.3 1014.7 1016.1 1023.2 1024.4 1031.1 1030.9 1031.1 DAY 12 6 2 8 2 1 3 5 27 15 25 12 MIN. QNH PRESSURE IN HPA 1012.4 1006.9 1010.1 1012.9 1010.6 1003.7 1002.6 1008.0 1011.5 1017.0 1014.6 1012.9 1002.6 DAY 28 19 13 17 29 30 26 1 7 1 14 6 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 859.7 855.9 856.7 857.3 856.7 851.6 849.5 853.8 856.4 860.3 861.3 862.0 856.8 MAX. QFE PRESSURE IN HPA 866.0 863.6 865.8 862.2 862.4 857.4 854.6 856.3 862.1 864.0 870.0 869.0 870.0 DAY 12 6 2 7 2 1 3 5 27 15 25 12 MIN. QFE PRESSURE IN HPA 851.2 849.2 851.0 853.0 850.6 845.4 845.2 849.3 851.8 857.2 854.5 855.6 845.2 DAY 28 19 13 17 29 30 25 1 10 1 14 6 MEAN QNH PRESSURE IN HPA 1018.3 1013.9 1014.9 1015.6 1014.9 1009.0 1006.6 1011.5 1014.5 1019.0 1020.2 1021.0 1014.9 MAX. QNH PRESSURE IN HPA 1025.5 1022.8 1025.3 1021.2 1021.4 1015.7 1012.4 1014.4 1021.0 1023.2 1030.1 1029.0 1030.1 DAY 12 6 2 7 2 1 3 5 27 15 25 12 MIN. QNH PRESSURE IN HPA 1008.5 1006.2 1008.3 1010.6 1007.8 1001.9 1001.7 1006.4 1009.2 1015.4 1012.3 1013.6 1001.7 DAY 28 19 13 17 29 30 25 1 10 1 14 6 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ANAR (40839) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 30 53 N LONGITUDE 55 15 E DATA PROCESSING CENTER ELEVATION 1408.8 M MEANS AND EXTREMES FOR THE YEAR 2003 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 1500 UTC. MEAN QFE PRESSURE IN HPA 860.4 856.4 857.0 857.5 856.7 851.4 849.2 853.7 856.4 860.6 862.0 863.0 857.0 MAX. QFE PRESSURE IN HPA 867.0 864.2 866.4 862.2 862.6 857.4 853.8 856.4 862.1 864.4 870.6 869.5 870.6 DAY 12 6 2 7 2 1 3 4 27 15 25 12 MIN. QFE PRESSURE IN HPA 851.2 850.0 851.4 853.0 850.6 845.0 844.0 849.3 851.8 857.2 855.8 857.8 844.0 DAY 28 19 12 17 29 30 25 1 10 5 14 6 MEAN QNH PRESSURE IN HPA 1019.1 1014.5 1015.2 1015.8 1014.8 1008.7 1006.2 1011.4 1014.5 1019.3 1021.0 1022.1 1015.2 MAX. QNH PRESSURE IN HPA 1026.7 1023.5 1026.0 1021.2 1021.6 1015.7 1011.5 1014.5 1021.0 1023.7 1030.8 1029.5 1030.8 DAY 12 6 2 7 2 1 3 4 27 15 25 12 MIN. QNH PRESSURE IN HPA 1008.5 1007.2 1008.8 1010.6 1007.8 1001.4 1000.3 1006.4 1009.2 1015.4 1013.8 1016.1 1000.3 DAY 28 19 12 17 29 30 25 1 10 5 14 6 MEAN QFF PRESSURE IN HPA 1019.1 1012.0 1010.9 1008.0 1005.5 995.5 991.2 999.0 1004.6 1012.4 1019.4 1022.3 1008.3 MAX. QFF PRESSURE IN HPA 1027.9 1023.7 1028.4 1014.7 1017.0 1003.6 997.1 1002.9 1012.7 1018.1 1033.3 1036.8 1036.8 DAY 12 6 2 3 2 1 3 11 27 16 25 12 MIN. QFF PRESSURE IN HPA 1007.0 1003.5 1001.1 1002.1 996.7 986.1 984.8 990.6 997.9 1006.1 1009.4 1012.3 984.8 DAY 28 19 12 17 23 30 25 1 12 5 2 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 2006,MAY M.(S & A) STATION ANAR (40839) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 30 53 N LONGITUDE 55 15 E DATA PROCESSING CENTER ELEVATION 1408.8 M MEANS AND EXTREMES FOR THE YEAR 2004 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AIR TEMPERATURE (C) 9.7 13.9 18.0 20.5 27.4 32.2 31.6 32.5 26.6 20.9 16.1 7.8 21.4 MINIMUN AIR TEMPERATURE (C) 2.8 4.0 7.1 10.8 15.3 19.5 18.9 18.8 13.5 8.4 6.0 0.3 10.4 DAYS WITH MINIMUM TEMP. >=21 0 0 0 0 1 7 4 5 0 0 0 0 17 DAYS WITH MINIMUM TEMP. <=-4 4 0 0 0 0 0 0 0 0 0 2 8 14 DAYS WITH FREEZING MIN.<= 0 11 6 3 0 0 0 0 0 0 0 3 18 41 TEMPERATURE RECORDS LOWEST(C) -6.6 -3.6 -1.2 5.0 10.4 15.2 14.4 14.8 7.0 3.4 -5.8 -6.6 -6.6 DAY 1 9 17 7 7 2 18 22 30 30 30 4 MAXIMUM AIR TEMPERATURE (C) 14.5 20.0 24.4 25.6 32.7 37.6 37.0 38.5 33.0 27.7 22.4 12.8 27.2 DAYS WITH MAXIMUM TEMP. >=30 0 0 2 3 27 30 31 31 22 9 0 0 155 DAYS WITH MAXIMUM TEMP. <= 0 0 0 0 0 0 0 0 0 0 0 0 0 0 TEMPERATURE RECORDS HIGHEST(C) 20.0 26.6 32.0 31.0 37.0 40.0 40.4 42.6 37.6 32.4 26.4 18.6 42.6 DAY 6 14 7 30 23 12 31 12 7 4 3 2 DIF. BETWEEN (MAX.-MIN.) (C) 11.7 16.0 17.3 14.8 17.4 18.1 18.1 19.7 19.5 19.3 16.4 12.5 16.8 MEAN DAILY TEMP. (MDT) (C) 8.6 12.0 15.8 18.2 24.0 28.5 28.0 28.7 23.2 18.0 14.2 6.6 18.8 COOLING DEG. DAYS(BASE 21 0C) 0.0 0.0 1.2 5.4 97.7 225.8 215.5 237.4 80.2 1.1 0.0 0.0 864.3 HEATING DEG. DAYS(BASE 18 0C) 290.3 174.7 89.2 31.1 0.0 0.0 0.0 0.0 0.7 28.8 117.7 354.7 1087.2 DEWPOINT (MEAN C) -0.7 -5.3 -3.1 1.2 1.0 0.4 2.6 1.0 -1.1 -1.2 -1.8 -2.5 -0.8 MIXING RATIO (G/KG) 4.51 3.10 3.68 5.19 4.91 4.75 5.60 4.97 4.23 4.16 4.21 3.93 4.44 VAPOUR PRESSURE (HPA) 6.18 4.27 5.05 7.09 6.71 6.47 7.62 6.76 5.81 5.74 5.79 5.40 6.07 SATURATION DEF. (HPA) 6.45 12.71 17.31 18.14 31.25 43.67 41.02 45.04 31.42 20.83 13.75 5.94 23.96 RELATIVE HUMIDITY (MEAN %) 52 29 28 33 20 15 18 15 18 25 34 52 28 RELATIVE HUMIDITY (MAX. %) 73 50 47 54 37 27 32 27 32 42 53 72 46 RELATIVE HUMIDITY (MIN. %) 37 18 17 20 12 9 11 9 12 16 21 37 18 RELATIVE HUMIDITY (MEAN% 03UTC) 72 50 45 53 37 27 32 27 32 42 52 69 45 RELATIVE HUMIDITY (MEAN% 09UTC) 44 20 21 26 15 11 13 11 13 18 24 43 22 RELATIVE HUMIDITY (MEAN% 15UTC) 49 24 25 29 16 12 14 12 16 23 33 53 26 RH=0 => RELATIVE HUMIDITY < 0.5% AMOUNT OF PRECIPITATION MM. 38.8 2.0 0.0 23.4 0.0 0.0 2.0 0.0 0.0 0.0 3.0 32.8 102.0 DAYS WITH PRECIPITATION >=10 1 0 0 1 0 0 0 0 0 0 0 1 3 DAYS WITH PRECIPITATION >= 5 3 0 0 2 0 0 0 0 0 0 0 3 8 DAYS WITH PRECIPITATION >= 1 4 1 0 5 0 0 1 0 0 0 1 5 17 DAYS WITH PRECIPITATION 5 1 0 5 0 0 1 0 0 0 1 7 20 GREATEST DAILY PRECIPITATION 25.0 2.0 0.0 10.0 0.0 0.0 2.0 0.0 0.0 0.0 3.0 10.0 25.0 DAY 9 7 ** 14 ** ** 13 ** ** ** 16 17 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 2 2 DAYS WITH DUST 0 1 2 3 4 2 3 0 0 0 2 0 17 WIND DIRECTION (PREVAILING) 225 225 225 225 45 45 45 45 45 45 225 225 45 PREVAILING WIND SPEED(KNOTS) 20.8 22.8 21.4 20.5 9.7 10.6 11.4 11.2 11.3 8.9 20.4 18.8 10.4 PREVAILING WIND PERCENT 19.4 20.7 17.4 16.7 11.6 22.7 29.0 31.6 26.0 17.4 20.0 20.0 14.2 CALMS PERCENT OF WIND 52.3 49.0 43.9 44.0 46.5 50.0 38.1 47.7 56.7 65.8 54.7 56.1 50.4 NO. OF WIND OBSERVATION 155 145 155 150 155 150 155 155 150 155 150 155 1830 VECTOR WIND DIRECTION (MEAN) 238 239 264 266 296 18 24 28 26 13 239 246 293 VECTOR WIND MAGNITUDE(KNOTS) 4.5 5.9 3.8 5.2 3.3 2.8 5.9 4.8 3.3 1.6 4.2 3.3 1.8 WIND STEADINESES (MEAN %) 61.6 70.2 46.3 57.8 44.6 56.0 81.9 81.4 67.3 51.6 60.0 50.0 26.9 WIND SPEED (MEAN KNOTS) 7.3 8.4 8.2 9.0 7.4 5.0 7.2 5.9 4.9 3.1 7.0 6.6 6.7 FASTEST WIND DIRECTION 220 230 230 240 220 40 30 360 240 270 210 220 230 FASTEST WIND SPEED (KNOTS) 35 39 49 49 39 25 29 23 29 25 35 35 49 DAY 13 2 15 17 13 13 18 17 17 23 23 1 DAYS WITH SKY CLEAR (0-2)/8 13 19 20 15 26 23 25 31 30 29 17 14 262 DAYS WITH P.CLOUDY (3-6)/8 9 10 9 9 5 7 6 0 0 2 13 8 78 DAYS WITH CLOUDY (7-8)/8 9 0 2 6 0 0 0 0 0 0 0 9 26 DAYS WITH VISIBILITY =< 2 KM 2 0 1 0 0 1 1 0 0 0 1 0 6 DURATION OF SUNSHINE HOURS 171.2 249.9 265.7 223.4 332.4 317.8 339.9 351.4 322.4 299.8 220.0 171.9 3265.8 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ANAR (40839) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 30 53 N LONGITUDE 55 15 E DATA PROCESSING CENTER ELEVATION 1408.8 M MEANS AND EXTREMES FOR THE YEAR 2004 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL MEAN QFE PRESSURE IN HPA 859.0 860.5 860.5 857.9 856.0 853.8 854.3 853.8 859.4 863.5 862.1 861.4 858.5 MAX. QFE PRESSURE IN HPA 866.2 867.8 868.1 864.0 861.2 861.0 859.7 859.6 865.4 869.0 868.6 872.0 872.0 DAY-HOUR 11-15 10- 6 9- 6 29- 6 18- 6 6- 6 18- 6 30- 6 27- 6 27- 6 29- 6 4- 6 MIN. QFE PRESSURE IN HPA 850.4 854.3 852.2 847.8 846.6 846.0 847.6 848.4 853.6 857.6 855.6 854.5 846.0 DAY-HOUR 27- 9 15-12 31-12 17-12 13-15 17-15 11-15 12-15 12-12 3-12 24-12 15-12 MEAN QNH PRESSURE IN HPA 1017.4 1019.2 1019.3 1016.2 1014.0 1011.5 1012.1 1011.6 1018.0 1022.6 1021.0 1020.2 1016.9 MAX. QNH PRESSURE IN HPA 1025.7 1027.6 1027.9 1023.2 1020.0 1019.8 1018.3 1018.2 1024.8 1029.0 1028.5 1032.4 1032.4 DAY-HOUR 11-15 10- 6 9- 6 29- 6 18- 6 6- 6 18- 6 30- 6 27- 6 27- 6 29- 6 4- 6 MIN. QNH PRESSURE IN HPA 1007.6 1012.1 1009.7 1004.6 1003.3 1002.6 1004.4 1005.3 1011.3 1015.9 1013.6 1012.3 1002.6 DAY-HOUR 27- 9 15-12 31-12 17-12 13-15 17-15 11-15 12-15 12-12 3-12 24-12 15-12 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 859.3 861.0 861.5 858.6 857.2 855.1 855.2 854.8 860.2 864.2 862.7 861.7 859.3 MAX. QFE PRESSURE IN HPA 865.2 866.2 867.3 862.8 860.2 860.4 858.7 858.6 865.0 867.8 867.1 871.2 871.2 DAY 1 10 23 12 4 1 18 30 27 27 29 4 MIN. QFE PRESSURE IN HPA 852.5 856.2 854.4 853.0 850.1 848.8 850.8 851.6 855.2 860.5 856.2 856.4 848.8 DAY 27 19 15 17 14 18 11 16 12 4 24 21 MEAN QNH PRESSURE IN HPA 1017.8 1019.8 1020.3 1017.0 1015.4 1013.0 1013.1 1012.7 1018.9 1023.5 1021.7 1020.6 1017.8 MAX. QNH PRESSURE IN HPA 1024.6 1025.7 1027.0 1021.8 1018.9 1019.1 1017.1 1017.0 1024.4 1027.6 1026.8 1031.5 1031.5 DAY 1 10 23 12 4 1 18 30 27 27 29 4 MIN. QNH PRESSURE IN HPA 1010.0 1014.3 1012.2 1010.6 1007.3 1005.8 1008.1 1009.0 1013.1 1019.2 1014.3 1014.5 1005.8 DAY 27 19 15 17 14 18 11 16 12 4 24 21 MEAN QFF PRESSURE IN HPA 1016.7 1017.1 1015.5 1010.0 1004.7 1000.0 1000.4 999.8 1009.6 1017.6 1017.9 1021.1 1010.9 MAX. QFF PRESSURE IN HPA 1028.4 1027.1 1026.8 1017.1 1008.7 1008.4 1005.9 1005.4 1018.1 1024.3 1028.7 1036.2 1036.2 DAY 1 9 23 12 3 1 18 30 30 27 29 4 MIN. QFF PRESSURE IN HPA 1006.0 1008.2 1005.7 1000.8 996.1 991.4 993.7 994.0 1003.0 1011.7 1007.6 1010.8 991.4 DAY 27 15 31 17 14 18 11 16 12 4 24 16 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ANAR (40839) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 30 53 N LONGITUDE 55 15 E DATA PROCESSING CENTER ELEVATION 1408.8 M MEANS AND EXTREMES FOR THE YEAR 2004 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 0600 UTC. MEAN QFE PRESSURE IN HPA 860.5 862.3 862.4 859.6 857.7 855.5 855.8 855.4 861.2 865.4 863.8 863.1 860.2 MAX. QFE PRESSURE IN HPA 865.8 867.8 868.1 864.0 861.2 861.0 859.7 859.6 865.4 869.0 868.6 872.0 872.0 DAY 12 10 9 29 18 6 18 30 27 27 29 4 MIN. QFE PRESSURE IN HPA 852.5 857.9 855.0 853.0 850.6 848.8 851.6 852.4 856.4 861.5 856.8 857.5 848.8 DAY 27 19 15 17 14 18 11 4 12 3 24 15 MEAN QNH PRESSURE IN HPA 1019.2 1021.2 1021.4 1018.2 1016.0 1013.5 1013.8 1013.4 1020.0 1024.8 1023.0 1022.1 1018.9 MAX. QNH PRESSURE IN HPA 1025.3 1027.6 1027.9 1023.2 1020.0 1019.8 1018.3 1018.2 1024.8 1029.0 1028.5 1032.4 1032.4 DAY 12 10 9 29 18 6 18 30 27 27 29 4 MIN. QNH PRESSURE IN HPA 1010.0 1016.2 1012.9 1010.6 1007.8 1005.8 1009.0 1009.9 1014.5 1020.4 1015.0 1015.8 1005.8 DAY 27 19 15 17 14 18 11 4 12 3 24 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 858.9 860.9 860.9 858.2 856.2 854.1 854.6 854.3 859.7 863.5 861.9 861.4 858.7 MAX. QFE PRESSURE IN HPA 863.7 866.2 867.0 862.4 859.6 859.8 858.7 858.6 864.5 867.4 866.1 869.8 869.8 DAY 1 10 23 12 18 6 18 30 30 27 29 3 MIN. QFE PRESSURE IN HPA 850.4 856.3 854.0 849.7 849.0 848.3 849.8 850.6 855.0 859.2 855.8 855.6 848.3 DAY 27 19 31 17 14 18 11 15 12 3 24 15 MEAN QNH PRESSURE IN HPA 1017.4 1019.6 1019.6 1016.6 1014.3 1011.9 1012.4 1012.1 1018.3 1022.7 1020.8 1020.2 1017.2 MAX. QNH PRESSURE IN HPA 1022.9 1025.7 1026.7 1021.4 1018.2 1018.4 1017.1 1017.0 1023.8 1027.1 1025.6 1029.9 1029.9 DAY 1 10 23 12 18 6 18 30 30 27 29 3 MIN. QNH PRESSURE IN HPA 1007.6 1014.4 1011.8 1006.8 1006.0 1005.2 1006.9 1007.8 1012.9 1017.7 1013.8 1013.6 1005.2 DAY 27 19 31 17 14 18 11 15 12 3 24 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 857.8 859.0 858.9 856.5 854.5 852.3 853.0 852.4 858.0 862.0 860.6 860.1 857.1 MAX. QFE PRESSURE IN HPA 862.7 864.6 864.8 860.8 857.7 858.1 857.0 857.0 862.8 865.8 864.0 869.8 869.8 DAY 11 10 23 12 3 6 18 30 26 27 1 3 MIN. QFE PRESSURE IN HPA 850.4 854.3 852.2 847.8 847.0 846.4 847.8 848.8 853.6 857.6 855.6 854.5 846.4 DAY 27 15 31 17 13 17 11 15 12 3 24 15 MEAN QNH PRESSURE IN HPA 1016.1 1017.5 1017.3 1014.6 1012.3 1009.8 1010.6 1009.9 1016.3 1020.9 1019.3 1018.7 1015.3 MAX. QNH PRESSURE IN HPA 1021.7 1023.9 1024.1 1019.6 1016.0 1016.5 1015.2 1015.2 1021.8 1025.3 1023.2 1029.9 1029.9 DAY 11 10 23 12 3 6 18 30 26 27 1 3 MIN. QNH PRESSURE IN HPA 1007.6 1012.1 1009.7 1004.6 1003.7 1003.0 1004.6 1005.8 1011.3 1015.9 1013.6 1012.3 1003.0 DAY 27 15 31 17 13 17 11 15 12 3 24 15 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ANAR (40839) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 30 53 N LONGITUDE 55 15 E DATA PROCESSING CENTER ELEVATION 1408.8 M MEANS AND EXTREMES FOR THE YEAR 2004 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 1500 UTC. MEAN QFE PRESSURE IN HPA 858.5 859.5 859.2 856.6 854.4 852.0 852.9 852.4 858.1 862.3 861.4 860.9 857.3 MAX. QFE PRESSURE IN HPA 866.2 865.0 864.8 861.4 857.7 857.7 856.6 856.8 863.4 866.0 864.6 871.0 871.0 DAY 11 8 23 12 3 6 17 30 27 27 29 3 MIN. QFE PRESSURE IN HPA 852.6 854.8 852.8 847.8 846.6 846.0 847.6 848.4 854.0 857.8 857.2 855.2 846.0 DAY 23 19 31 17 13 17 11 12 11 3 27 16 MEAN QNH PRESSURE IN HPA 1016.9 1018.1 1017.7 1014.8 1012.2 1009.5 1010.4 1009.9 1016.4 1021.3 1020.3 1019.6 1015.6 MAX. QNH PRESSURE IN HPA 1025.7 1024.4 1024.1 1020.2 1016.0 1016.0 1014.7 1015.0 1022.5 1025.5 1023.9 1031.3 1031.3 DAY 11 8 23 12 3 6 17 30 27 27 29 3 MIN. QNH PRESSURE IN HPA 1010.1 1012.7 1010.4 1004.6 1003.3 1002.6 1004.4 1005.3 1011.8 1016.1 1015.4 1013.1 1002.6 DAY 23 19 31 17 13 17 11 12 11 3 27 16 MEAN QFF PRESSURE IN HPA 1015.7 1015.2 1012.6 1007.6 1001.5 996.4 997.7 997.0 1007.2 1015.4 1016.5 1020.0 1008.6 MAX. QFF PRESSURE IN HPA 1023.9 1024.4 1023.1 1015.9 1005.9 1004.0 1003.8 1003.7 1016.4 1022.3 1026.6 1033.6 1033.6 DAY 11 8 23 12 3 1 18 30 27 27 30 3 MIN. QFF PRESSURE IN HPA 1007.2 1004.6 1002.4 995.3 991.8 988.8 990.8 990.7 1001.4 1008.7 1009.4 1008.4 988.8 DAY 7 15 15 17 13 17 11 12 11 3 27 16 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 ANAR (40839) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 30 53 N LONGITUDE 55 15 E DATA PROCESSING CENTER ELEVATION 1408.8 M MEANS AND EXTREMES FOR THE YEAR 2005 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AIR TEMPERATURE (C) 7.4 8.6 16.5 22.0 25.5 31.7 34.2 31.6 28.8 22.0 13.9 10.7 21.1 MINIMUN AIR TEMPERATURE (C) -1.3 -0.7 7.1 10.3 14.0 17.5 21.3 18.2 14.8 9.8 3.7 0.3 9.6 DAYS WITH MINIMUM TEMP. >=21 0 0 0 0 0 5 20 6 0 0 0 0 31 DAYS WITH MINIMUM TEMP. <=-4 11 12 0 0 0 0 0 0 0 0 0 5 28 DAYS WITH FREEZING MIN.<= 0 23 18 2 1 0 0 0 0 0 0 6 19 69 TEMPERATURE RECORDS LOWEST(C) -8.0 -7.4 -2.0 0.0 7.0 13.6 16.0 13.0 11.0 2.8 -3.0 -8.0 -8.0 DAY 14 18 27 7 9 12 27 18 26 25 27 28 MAXIMUM AIR TEMPERATURE (C) 13.3 14.3 22.3 27.8 30.7 37.3 39.5 37.5 35.8 28.7 20.2 17.5 27.1 DAYS WITH MAXIMUM TEMP. >=30 0 0 0 15 22 30 31 31 30 11 0 0 170 DAYS WITH MAXIMUM TEMP. <= 0 0 0 0 0 0 0 0 0 0 0 0 0 0 TEMPERATURE RECORDS HIGHEST(C) 20.4 24.0 28.4 33.4 34.0 43.6 42.4 41.0 38.0 32.6 26.4 25.6 43.6 DAY 3 21 12 26 18 26 2 8 6 4 3 6 DIF. BETWEEN (MAX.-MIN.) (C) 14.6 15.0 15.2 17.5 16.7 19.8 18.2 19.3 21.0 18.9 16.5 17.2 17.5 MEAN DAILY TEMP. (MDT) (C) 6.0 6.8 14.7 19.1 22.3 27.4 30.4 27.8 25.3 19.3 11.9 8.9 18.3 COOLING DEG. DAYS(BASE 21 0C) 0.0 0.0 1.5 21.2 55.7 191.9 291.3 211.8 128.5 13.5 0.0 0.0 915.5 HEATING DEG. DAYS(BASE 18 0C) 371.4 313.5 113.7 39.0 2.7 0.0 0.0 0.0 0.0 22.9 184.7 281.9 1329.7 DEWPOINT (MEAN C) -5.4 -5.6 -4.2 -1.9 0.9 2.3 4.4 2.4 -1.0 -1.8 -2.2 -5.7 -1.5 MIXING RATIO (G/KG) 3.20 3.17 3.85 4.10 5.07 5.42 6.32 5.51 4.25 3.92 3.90 3.04 4.31 VAPOUR PRESSURE (HPA) 4.39 4.35 5.27 5.63 6.92 7.37 8.57 7.50 5.81 5.41 5.37 4.19 5.90 SATURATION DEF. (HPA) 6.69 7.76 14.64 23.02 27.13 41.98 47.60 41.42 36.52 23.01 11.75 9.90 24.28 RELATIVE HUMIDITY (MEAN %) 46 41 30 23 23 17 17 17 16 22 36 34 27 RELATIVE HUMIDITY (MAX. %) 66 64 53 42 40 30 30 31 31 39 57 54 45 RELATIVE HUMIDITY (MIN. %) 29 26 17 14 15 11 11 11 9 14 24 22 17 RELATIVE HUMIDITY (MEAN% 03UTC) 65 64 51 42 40 30 30 31 31 39 56 53 44 RELATIVE HUMIDITY (MEAN% 09UTC) 37 32 23 17 17 13 13 13 10 16 27 26 20 RELATIVE HUMIDITY (MEAN% 15UTC) 42 35 26 19 19 14 14 14 14 20 33 34 24 RH=0 => RELATIVE HUMIDITY < 0.5% AMOUNT OF PRECIPITATION MM. 1.4 14.0 10.4 4.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 29.8 DAYS WITH PRECIPITATION >=10 0 1 0 0 0 0 0 0 0 0 0 0 1 DAYS WITH PRECIPITATION >= 5 0 1 0 0 0 0 0 0 0 0 0 0 1 DAYS WITH PRECIPITATION >= 1 1 2 3 2 0 0 0 0 0 0 0 0 8 DAYS WITH PRECIPITATION 2 2 4 2 0 0 0 0 0 0 0 0 10 GREATEST DAILY PRECIPITATION 1.0 12.0 4.0 2.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 12.0 DAY 7 26 15 1 ** ** ** ** ** ** ** ** DAY WITH THUNDER STORM 0 0 1 0 0 0 0 0 0 0 0 0 1 DAYS WITH SNOW OR SLEET 0 0 0 0 0 0 0 0 0 0 0 0 0 DAYS WITH DUST 0 0 0 4 6 0 1 0 0 0 0 1 12 WIND DIRECTION (PREVAILING) 225 45 315 45 45 45 45 45 45 45 225 225 45 PREVAILING WIND SPEED(KNOTS) 21.7 8.3 13.8 11.3 10.3 13.3 13.7 11.3 9.7 11.4 17.9 19.6 11.3 PREVAILING WIND PERCENT 14.2 9.3 18.1 15.3 14.8 21.3 18.7 34.2 12.0 9.7 10.7 10.3 12.7 CALMS PERCENT OF WIND 66.5 58.6 35.5 48.7 45.2 52.0 47.1 49.0 71.3 68.4 69.3 75.5 57.2 NO. OF WIND OBSERVATION 155 140 155 150 155 150 155 155 150 155 150 155 1825 VECTOR WIND DIRECTION (MEAN) 236 279 269 291 325 22 27 32 41 1 244 216 314 VECTOR WIND MAGNITUDE(KNOTS) 3.7 3.1 5.9 2.4 3.5 3.6 3.9 4.7 1.2 0.7 1.8 1.8 1.5 WIND STEADINESES (MEAN %) 64.9 51.7 56.7 32.9 47.9 63.2 55.7 82.5 41.4 21.2 46.2 47.4 26.3 WIND SPEED (MEAN KNOTS) 5.7 6.0 10.4 7.3 7.3 5.7 7.0 5.7 2.9 3.3 3.9 3.8 5.7 FASTEST WIND DIRECTION 240 240 210 270 320 50 30 300 210 210 240 230 320 FASTEST WIND SPEED (KNOTS) 43 31 35 39 49 23 25 23 25 19 29 33 49 DAY 23 22 5 4 26 8 10 30 30 4 8 26 DAYS WITH SKY CLEAR (0-2)/8 20 16 14 18 23 30 28 30 27 31 19 20 276 DAYS WITH P.CLOUDY (3-6)/8 8 10 16 9 8 0 3 1 3 0 8 9 75 DAYS WITH CLOUDY (7-8)/8 3 2 1 3 0 0 0 0 0 0 3 2 14 DAYS WITH VISIBILITY =< 2 KM 1 0 0 1 1 0 0 0 0 0 0 0 3 DURATION OF SUNSHINE HOURS 217.4 211.8 235.2 272.0 303.7 360.0 343.5 358.0 316.8 311.4 234.2 224.6 3388.6 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ANAR (40839) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 30 53 N LONGITUDE 55 15 E DATA PROCESSING CENTER ELEVATION 1408.8 M MEANS AND EXTREMES FOR THE YEAR 2005 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL MEAN QFE PRESSURE IN HPA 860.2 858.1 857.9 859.9 857.3 853.7 852.5 854.2 856.9 862.6 862.7 863.2 858.3 MAX. QFE PRESSURE IN HPA 867.5 866.8 863.3 866.5 861.8 859.8 857.2 859.2 861.0 869.0 867.9 870.1 870.1 DAY-HOUR 8- 6 18- 6 29- 6 9- 6 12- 6 6- 6 19- 6 17- 6 26- 6 12- 6 23- 6 29- 6 MIN. QFE PRESSURE IN HPA 849.9 851.4 847.8 850.2 848.0 844.8 845.1 848.6 851.5 855.0 856.2 856.5 844.8 DAY-HOUR 23- 3 10-12 24-12 30-12 6-12 27-15 5-12 8-12 5-12 4-12 8-12 24- 9 MEAN QNH PRESSURE IN HPA 1018.9 1016.4 1016.3 1018.5 1015.5 1011.4 1010.0 1012.0 1015.1 1021.6 1021.7 1022.3 1016.6 MAX. QNH PRESSURE IN HPA 1027.2 1026.4 1022.4 1026.1 1020.7 1018.4 1015.4 1017.7 1019.8 1029.0 1027.7 1030.2 1030.2 DAY-HOUR 8- 6 18- 6 29- 6 9- 6 12- 6 6- 6 19- 6 17- 6 26- 6 12- 6 23- 6 29- 6 MIN. QNH PRESSURE IN HPA 1007.0 1008.8 1004.6 1007.4 1004.9 1001.2 1001.5 1005.6 1008.9 1012.9 1014.3 1014.6 1001.2 DAY-HOUR 23- 3 10-12 24-12 30-12 6-12 27-15 5-12 8-12 5-12 4-12 8-12 24- 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 860.5 858.6 858.5 860.9 858.4 854.9 853.7 855.3 857.9 863.4 863.4 863.6 859.1 MAX. QFE PRESSURE IN HPA 865.6 865.2 861.7 865.1 861.6 859.4 856.7 858.7 860.2 868.1 866.5 868.5 868.5 DAY 8 15 29 14 19 6 28 17 22 12 23 29 MIN. QFE PRESSURE IN HPA 849.9 852.2 851.1 852.9 850.4 848.4 848.0 850.4 854.3 858.0 856.6 856.6 848.0 DAY 23 5 24 30 6 28 5 8 5 4 9 24 MEAN QNH PRESSURE IN HPA 1019.2 1017.0 1016.9 1019.7 1016.8 1012.8 1011.4 1013.2 1016.2 1022.6 1022.5 1022.8 1017.6 MAX. QNH PRESSURE IN HPA 1025.1 1024.6 1020.6 1024.5 1020.5 1017.9 1014.8 1017.1 1018.9 1027.9 1026.1 1028.4 1028.4 DAY 8 15 29 14 19 6 28 17 22 12 23 29 MIN. QNH PRESSURE IN HPA 1007.0 1009.7 1008.4 1010.5 1007.6 1005.3 1004.9 1007.6 1012.1 1016.3 1014.7 1014.7 1004.9 DAY 23 5 24 30 6 28 5 8 5 4 9 24 MEAN QFF PRESSURE IN HPA 1020.0 1017.1 1012.3 1012.5 1007.2 1000.2 997.2 1000.7 1005.8 1015.9 1020.0 1022.4 1011.0 MAX. QFF PRESSURE IN HPA 1030.1 1028.5 1020.0 1023.2 1012.8 1006.0 1003.2 1006.1 1010.1 1022.2 1026.5 1032.1 1032.1 DAY 13 18 27 9 8 6 29 18 26 27 29 31 MIN. QFF PRESSURE IN HPA 1003.6 1008.6 1000.4 1000.4 997.9 990.5 989.0 993.7 1000.9 1006.3 1007.1 1009.1 989.0 DAY 23 5 24 30 6 28 5 8 5 5 9 24 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ANAR (40839) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 30 53 N LONGITUDE 55 15 E DATA PROCESSING CENTER ELEVATION 1408.8 M MEANS AND EXTREMES FOR THE YEAR 2005 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 0600 UTC. MEAN QFE PRESSURE IN HPA 861.9 859.9 859.8 861.8 859.0 855.4 853.9 855.8 858.7 864.5 864.6 865.0 860.0 MAX. QFE PRESSURE IN HPA 867.5 866.8 863.3 866.5 861.8 859.8 857.2 859.2 861.0 869.0 867.9 870.1 870.1 DAY 8 18 29 9 12 6 19 17 26 12 23 29 MIN. QFE PRESSURE IN HPA 850.0 853.8 851.1 853.8 851.0 849.2 848.0 850.4 854.6 858.8 859.0 858.4 848.0 DAY 23 5 24 30 6 27 5 8 5 4 9 24 MEAN QNH PRESSURE IN HPA 1020.8 1018.5 1018.4 1020.7 1017.4 1013.3 1011.6 1013.8 1017.1 1023.8 1023.9 1024.4 1018.6 MAX. QNH PRESSURE IN HPA 1027.2 1026.4 1022.4 1026.1 1020.7 1018.4 1015.4 1017.7 1019.8 1029.0 1027.7 1030.2 1030.2 DAY 8 18 29 9 12 6 19 17 26 12 23 29 MIN. QNH PRESSURE IN HPA 1007.2 1011.5 1008.4 1011.5 1008.3 1006.2 1004.9 1007.6 1012.4 1017.3 1017.5 1016.8 1004.9 DAY 23 5 24 30 6 27 5 8 5 4 9 24 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 860.3 858.3 858.3 860.3 857.5 854.1 852.7 854.5 857.2 862.6 862.6 863.3 858.5 MAX. QFE PRESSURE IN HPA 866.4 865.7 861.2 864.8 860.2 858.8 856.0 857.8 859.4 867.2 865.6 867.9 867.9 DAY 8 15 28 9 17 6 19 17 22 12 27 29 MIN. QFE PRESSURE IN HPA 850.0 852.4 849.4 852.3 850.4 847.2 846.9 849.4 853.5 857.0 858.2 856.5 846.9 DAY 23 5 24 30 6 27 5 8 5 4 9 24 MEAN QNH PRESSURE IN HPA 1019.0 1016.7 1016.7 1018.9 1015.8 1011.8 1010.2 1012.3 1015.4 1021.6 1021.6 1022.4 1016.9 MAX. QNH PRESSURE IN HPA 1026.0 1025.2 1020.0 1024.1 1018.9 1017.3 1014.0 1016.1 1017.9 1026.9 1025.1 1027.7 1027.7 DAY 8 15 28 9 17 6 19 17 22 12 27 29 MIN. QNH PRESSURE IN HPA 1007.2 1009.9 1006.5 1009.8 1007.6 1003.9 1003.6 1006.5 1011.2 1015.2 1016.6 1014.6 1003.6 DAY 23 5 24 30 6 27 5 8 5 4 9 24 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 858.8 856.5 856.3 858.2 855.7 852.2 851.2 852.8 855.4 861.1 861.2 861.8 856.8 MAX. QFE PRESSURE IN HPA 865.0 863.7 859.8 862.6 858.3 857.3 854.4 856.5 857.8 866.0 864.6 866.1 866.1 DAY 8 15 14 14 12 16 28 18 22 12 27 29 MIN. QFE PRESSURE IN HPA 850.6 851.4 847.8 850.2 848.0 845.2 845.1 848.6 851.5 855.0 856.2 856.5 845.1 DAY 23 10 24 30 6 27 5 8 5 4 8 24 MEAN QNH PRESSURE IN HPA 1017.3 1014.6 1014.4 1016.6 1013.7 1009.7 1008.5 1010.3 1013.3 1019.8 1020.0 1020.7 1014.9 MAX. QNH PRESSURE IN HPA 1024.4 1022.9 1018.4 1021.6 1016.7 1015.5 1012.2 1014.6 1016.1 1025.5 1023.9 1025.6 1025.6 DAY 8 15 14 14 12 16 28 18 22 12 27 29 MIN. QNH PRESSURE IN HPA 1007.8 1008.8 1004.6 1007.4 1004.9 1001.7 1001.5 1005.6 1008.9 1012.9 1014.3 1014.6 1001.5 DAY 23 10 24 30 6 27 5 8 5 4 8 24 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ANAR (40839) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 30 53 N LONGITUDE 55 15 E DATA PROCESSING CENTER ELEVATION 1408.8 M MEANS AND EXTREMES FOR THE YEAR 2005 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 1500 UTC. MEAN QFE PRESSURE IN HPA 859.5 857.1 856.7 858.4 855.8 851.9 851.1 852.7 855.4 861.4 861.7 862.5 857.0 MAX. QFE PRESSURE IN HPA 866.0 863.7 860.7 862.4 859.0 857.3 854.6 856.5 858.0 866.6 865.2 867.2 867.2 DAY 9 15 13 9 25 16 28 18 22 12 23 29 MIN. QFE PRESSURE IN HPA 852.6 851.5 849.4 850.6 848.6 844.8 845.1 848.6 851.5 855.4 856.2 857.3 844.8 DAY 3 7 24 29 6 27 5 8 5 4 8 24 MEAN QNH PRESSURE IN HPA 1018.1 1015.3 1014.9 1016.9 1013.8 1009.3 1008.4 1010.3 1013.4 1020.2 1020.6 1021.5 1015.2 MAX. QNH PRESSURE IN HPA 1025.5 1022.9 1019.4 1021.4 1017.5 1015.5 1012.4 1014.6 1016.3 1026.2 1024.6 1026.9 1026.9 DAY 9 15 13 9 25 16 28 18 22 12 23 29 MIN. QNH PRESSURE IN HPA 1010.1 1008.9 1006.5 1007.8 1005.6 1001.2 1001.5 1005.6 1008.9 1013.4 1014.3 1015.5 1001.2 DAY 3 7 24 29 6 27 5 8 5 4 8 24 MEAN QFF PRESSURE IN HPA 1018.7 1015.3 1010.2 1009.5 1004.1 996.5 994.3 997.7 1002.9 1013.6 1018.1 1021.1 1008.5 MAX. QFF PRESSURE IN HPA 1029.1 1026.5 1016.9 1019.3 1008.6 1004.3 1000.5 1004.0 1006.8 1020.3 1025.4 1031.5 1031.5 DAY 13 18 27 6 8 16 27 18 26 24 27 30 MIN. QFF PRESSURE IN HPA 1005.2 1008.9 999.7 999.1 996.8 986.2 986.1 991.5 997.6 1004.8 1008.4 1009.6 986.1 DAY 3 28 24 30 6 27 5 8 5 4 8 24 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 ANAR (40839) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 30 53 N LONGITUDE 55 15 E DATA PROCESSING CENTER ELEVATION 1408.8 M CLIMATOLOGICAL NORMALS FOR THE PERIOD 1986-2005 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AIR TEMPERATURE (C) 6.9 9.6 14.0 20.3 25.6 30.3 31.8 30.0 26.0 19.8 13.4 9.0 19.7 MINIMUN AIR TEMPERATURE (C) -0.9 1.3 5.6 10.8 15.0 18.9 20.8 18.2 14.2 9.2 4.1 0.6 9.8 DAYS WITH MINIMUM TEMP. >=21 0.0 0.0 0.0 0.0 0.6 7.0 14.8 4.8 0.5 0.0 0.0 0.0 27.7 DAYS WITH MINIMUM TEMP. <=-4 8.7 3.8 0.5 0.0 0.0 0.0 0.0 0.0 0.0 0.0 1.2 6.0 20.2 DAYS WITH FREEZING MIN.<= 0 20.0 13.5 4.4 0.2 0.0 0.0 0.0 0.0 0.0 0.1 6.3 17.1 61.6 TEMPERATURE RECORDS LOWEST(C) -16.8 -12.0 -7.0 -1.0 4.0 12.6 13.0 9.0 5.0 -0.4 -7.0 -12.6 -16.8 YEAR-DAY 96-16 97- 8 92-13 97-14 89- 1 95- 1 0-26 88-11 94-22 96-23 88-24 90-29 96-16 MAXIMUM AIR TEMPERATURE (C) 13.3 16.3 20.4 26.7 32.2 37.1 38.3 37.0 33.8 27.6 20.9 16.0 26.6 DAYS WITH MAXIMUM TEMP. >=30 0.0 0.0 0.3 7.4 23.4 29.8 30.9 30.8 26.2 8.0 0.0 0.0 156.8 DAYS WITH MAXIMUM TEMP. <= 0 0.3 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.1 0.4 TEMPERATURE RECORDS HIGHEST(C) 23.4 26.6 32.0 35.6 40.2 43.6 44.8 42.6 40.2 35.6 29.2 27.2 44.8 YEAR-DAY 87-26 4-14 4- 7 87-27 0-29 5-26 98- 8 4-12 91- 9 98- 1 87- 7 98-18 98- 8 DIF. BETWEEN (MAX.-MIN.) (C) 14.2 15.0 14.8 15.9 17.2 18.2 17.5 18.8 19.6 18.4 16.8 15.4 16.8 MEAN DAILY TEMP. (MDT) (C) 6.2 8.8 13.0 18.8 23.6 28.0 29.6 27.6 24.0 18.4 12.5 8.3 18.2 STANDARD DEVIATION OF MDT(C) 1.37 1.76 1.60 1.22 1.38 0.72 1.52 1.05 1.41 1.07 1.35 1.57 1.33 COOLING DEG. DAYS(BASE 21 0C) 0.0 0.0 0.7 15.8 92.9 209.8 264.4 204.8 97.1 8.8 0.0 0.0 894.3 HEATING DEG. DAYS(BASE 18 0C) 365.0 259.2 160.7 32.5 2.1 0.0 0.0 0.0 1.0 29.0 168.2 300.4 1318.1 DEWPOINT (MEAN C) -5.0 -5.1 -3.0 -0.8 0.5 0.6 3.1 0.7 -1.0 -1.9 -3.5 -4.4 -1.6 MIXING RATIO (G/KG) 3.29 3.35 3.94 4.55 4.89 4.95 5.89 4.96 4.37 4.07 3.70 3.50 4.29 VAPOUR PRESSURE (HPA) 4.52 4.60 5.39 6.23 6.69 6.74 7.98 6.75 5.98 5.60 5.09 4.81 5.86 SATURATION DEF. (HPA) 6.26 8.39 11.88 19.17 28.10 38.72 41.50 38.19 30.42 19.40 11.61 7.67 21.78 RELATIVE HUMIDITY (MEAN %) 48 41 37 29 23 17 18 17 19 26 35 44 29 RELATIVE HUMIDITY (MAX. %) 69 63 59 49 39 29 30 29 32 43 55 64 47 RELATIVE HUMIDITY (MIN. %) 30 24 21 16 13 10 11 10 11 15 22 28 18 RELATIVE HUMIDITY (MEAN% 03UTC) 65 59 55 47 37 28 29 28 31 42 53 60 45 RELATIVE HUMIDITY (MEAN% 09UTC) 38 30 27 20 15 12 13 12 13 18 25 34 21 RELATIVE HUMIDITY (MEAN% 15UTC) 42 34 30 22 17 13 14 13 15 22 31 40 24 RH=0 => RELATIVE HUMIDITY < 0.5% AMOUNT OF PRECIPITATION MM. 17.8 11.1 16.8 7.7 4.5 0.5 0.8 0.0 0.0 1.1 3.9 13.7 77.9 DAYS WITH PRECIPITATION >=10 0.5 0.4 0.3 0.2 0.2 0.0 0.0 0.0 0.0 0.1 0.1 0.4 2.2 DAYS WITH PRECIPITATION >= 5 1.3 0.8 1.1 0.5 0.3 0.0 0.1 0.0 0.0 0.1 0.2 0.9 5.3 DAYS WITH PRECIPITATION >= 1 3.1 2.0 3.7 2.2 0.8 0.2 0.3 0.0 0.0 0.2 1.1 2.3 15.9 DAYS WITH PRECIPITATION 4.3 2.8 4.8 3.2 1.3 0.4 0.4 0.0 0.0 0.6 1.6 3.1 22.5 GREATEST DAILY PRECIPITATION 25.0 30.2 22.2 11.0 21.2 4.0 6.0 0.0 0.0 15.0 14.0 25.1 30.2 YEAR-DAY 4- 9 93- 4 98-10 96-16 95-29 97-25 87-28 **-** **-** 95-22 0- 7 86- 2 93 DAY WITH THUNDER STORM 0.0 0.1 0.6 0.7 1.0 0.2 0.2 0.0 0.0 0.2 0.1 0.0 3.1 DAYS WITH SNOW OR SLEET 1.1 0.3 0.1 0.0 0.1 0.0 0.0 0.0 0.0 0.0 0.0 0.7 2.3 DAYS WITH DUST 0.9 1.6 3.4 2.5 3.7 1.5 2.4 1.0 0.7 0.3 0.6 0.8 19.4 WIND DIRECTION (PREVAILING) 225 225 225 225 270 360 360 360 360 225 225 225 225 PREVAILING WIND SPEED(KNOTS) 12.6 13.1 13.7 11.4 9.6 8.1 9.0 8.6 7.5 6.5 9.9 12.7 10.6 PREVAILING WIND PERCENT 13.8 15.4 17.9 15.0 12.7 13.6 21.7 22.1 11.8 8.6 10.8 12.5 10.8 CALMS PERCENT OF WIND 60.5 49.9 42.9 42.3 41.5 44.9 42.3 46.6 58.7 64.8 65.6 63.3 51.9 NO. OF WIND OBSERVATION 194.5 182.7 196.9 194.9 202.3 197.8 200.3 200.1 190.3 201.1 192.0 197.0 2349.9 VECTOR WIND DIRECTION (MEAN) 228 237 241 259 304 343 10 9 359 318 239 218 284 VECTOR WIND MAGNITUDE(KNOTS) 2.4 3.1 3.4 2.7 2.5 2.0 3.0 3.1 1.5 0.7 1.2 2.2 1.2 WIND STEADINESES (MEAN %) 57.1 56.4 52.3 45.8 46.3 44.4 61.2 70.5 51.7 28.0 40.0 56.4 26.7 WIND SPEED (MEAN KNOTS) 4.2 5.5 6.5 5.9 5.4 4.5 4.9 4.4 2.9 2.5 3.0 3.9 4.5 FASTEST WIND DIRECTION 240 260 230 210 320 190 30 20 240 340 210 210 210 FASTEST WIND SPEED (KNOTS) 43 39 49 49 49 29 29 23 29 27 35 54 54 YEAR-DAY 5-23 3-19 4-15 3-22 5-26 2-27 4-18 90- 5 4-17 2-22 4-23 3- 6 3 DAYS WITH SKY CLEAR (0-2)/8 17.3 16.9 15.0 14.2 22.6 27.3 27.6 29.5 29.0 26.9 19.2 17.6 263.1 DAYS WITH P.CLOUDY (3-6)/8 9.0 8.3 11.3 12.1 7.1 2.6 3.4 1.5 1.0 3.7 8.6 9.2 77.8 DAYS WITH CLOUDY (7-8)/8 4.6 3.0 4.6 3.6 1.2 0.0 0.0 0.0 0.0 0.4 2.1 4.1 23.6 DAYS WITH VISIBILITY =< 2 KM 1.3 0.7 0.7 0.3 0.3 0.4 0.1 0.0 0.0 0.1 0.1 0.8 4.8 DURATION OF SUNSHINE HOURS 213.9 221.5 236.5 256.1 317.8 341.2 346.5 355.8 315.7 293.0 235.4 210.6 3344.0 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ANAR (40839) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 30 53 N LONGITUDE 55 15 E DATA PROCESSING CENTER ELEVATION 1408.8 M CLIMATOLOGICAL NORMALS FOR THE PERIOD 1986-2005 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL MEAN QFE PRESSURE IN HPA 860.5 859.1 858.0 858.2 857.2 853.8 852.5 854.6 858.0 862.1 862.6 862.1 858.2 MAX. QFE PRESSURE IN HPA 872.1 871.7 871.6 868.2 865.6 863.0 861.0 862.4 868.6 870.3 874.2 873.7 874.2 YEAR-DAY 92-10 91-15 2-11 98-12 98- 8 93-23 96- 3 99-20 94-23 93-17 96-19 87- 1 96-19 MIN. QFE PRESSURE IN HPA 846.6 848.4 847.3 847.3 846.6 844.8 843.6 847.0 847.0 853.6 853.5 849.8 843.6 YEAR-DAY 98-13 98-16 87-14 92-18 4-13 5-27 98- 8 94- 2 0- 1 90- 1 95-26 90-25 98- 8 MEAN QNH PRESSURE IN HPA 1019.2 1017.6 1016.3 1016.6 1015.5 1011.5 1010.0 1012.4 1016.4 1021.0 1021.6 1021.1 1016.6 MAX. QNH PRESSURE IN HPA 1032.5 1032.1 1031.9 1028.0 1025.1 1022.1 1019.8 1021.4 1028.5 1030.4 1034.9 1034.4 1034.9 YEAR-DAY 92-10 91-15 2-11 98-12 98- 8 93-23 96- 3 99-20 94-23 93-17 96-19 87- 1 96-19 MIN. QNH PRESSURE IN HPA 1003.3 1005.3 1004.1 1004.1 1003.3 1001.2 999.8 1003.7 1003.7 1011.3 1011.2 1006.9 999.8 YEAR-DAY 98-13 98-16 87-14 92-18 4-13 5-27 98- 8 94- 2 0- 1 90- 1 95-26 90-25 98- 8 MEAN QFF PRESSURE IN HPA 1019.5 1015.9 1011.5 1009.1 1005.4 998.1 996.0 999.1 1006.3 1014.1 1017.2 1019.5 1009.3 MAX. QFF PRESSURE IN HPA 1038.6 1036.2 1031.0 1024.8 1017.9 1013.4 1007.9 1011.8 1022.1 1027.4 1036.5 1039.0 1039.0 YEAR-DAY 92-10 91-15 92-13 94- 5 89- 1 95- 1 87-29 92-31 94-22 87-17 87-30 90-29 90-29 MIN. QFF PRESSURE IN HPA 1001.6 999.0 996.9 994.8 994.1 987.0 984.4 987.3 994.5 1002.4 1004.4 1000.7 984.4 YEAR-DAY 91-25 94-12 87-14 92-18 91-18 92-27 88-26 91-12 89-12 89- 1 95-26 94- 4 88-26 PRESSURE AT HOUR 0000 UTC. MEAN QFE PRESSURE IN HPA 860.7 858.9 857.2 858.2 857.6 853.7 852.5 854.2 858.1 862.2 862.4 861.6 858.1 MAX. QFE PRESSURE IN HPA 870.0 869.0 866.0 866.2 862.9 861.0 859.6 859.8 866.4 868.4 870.8 871.8 871.8 YEAR-DAY 92-10 91-16 92-13 94- 6 95-27 93-23 96- 4 87- 7 94-24 94-10 87-30 87- 1 87- 1 MIN. QFE PRESSURE IN HPA 850.0 848.7 849.8 851.0 849.9 847.2 845.8 848.0 852.2 856.2 853.5 850.9 845.8 YEAR-DAY 91-26 89-23 87-20 92-18 91-28 94-29 95-17 94- 2 89-12 89- 2 95-26 94- 4 95-17 MEAN QNH PRESSURE IN HPA 1019.5 1017.4 1015.4 1016.5 1015.8 1011.4 1010.1 1011.9 1016.5 1021.1 1021.3 1020.5 1016.5 MAX. QNH PRESSURE IN HPA 1030.1 1029.0 1025.5 1025.7 1022.0 1019.8 1018.2 1018.4 1026.0 1028.3 1031.0 1032.2 1032.2 YEAR-DAY 92-10 91-16 92-13 94- 6 95-27 93-23 96- 4 87- 7 94-24 94-10 87-30 87- 1 87- 1 MIN. QNH PRESSURE IN HPA 1007.2 1005.7 1006.9 1008.3 1007.0 1003.9 1002.3 1004.9 1009.7 1014.3 1011.2 1008.2 1002.3 YEAR-DAY 91-26 89-23 87-20 92-18 91-28 94-29 95-17 94- 2 89-12 89- 2 95-26 94- 4 95-17 MEAN QFF PRESSURE IN HPA 1018.8 1015.2 1010.9 1008.8 1005.4 998.4 996.2 999.0 1005.8 1013.5 1016.3 1018.8 1008.9 MAX. QFF PRESSURE IN HPA 1035.2 1033.1 1028.8 1023.4 1016.1 1010.6 1005.3 1007.7 1019.5 1024.4 1034.7 1037.6 1037.6 YEAR-DAY 92-10 91-16 92-13 94- 6 89- 2 95- 1 96- 4 92-31 94-23 87-29 87-30 90-29 90-29 MIN. QFF PRESSURE IN HPA 1003.4 999.4 999.4 998.2 995.1 989.0 986.7 988.5 995.9 1002.5 1004.4 1000.7 986.7 YEAR-DAY 91-26 89-23 87-14 92-18 91-23 92-27 95-17 91-12 89-12 89- 2 95-26 94- 4 95-17 PRESSURE AT HOUR 0300 UTC. MEAN QFE PRESSURE IN HPA 860.9 859.7 858.7 859.2 858.4 855.0 853.6 855.6 859.0 862.9 863.4 862.7 859.1 MAX. QFE PRESSURE IN HPA 870.4 869.8 870.2 866.8 864.8 862.4 860.5 861.6 867.4 869.2 873.2 872.5 873.2 YEAR-DAY 92-10 91-15 2-11 98-12 98- 8 93-23 96- 4 92-31 94-24 90-19 96-19 87- 1 96-19 MIN. QFE PRESSURE IN HPA 847.8 849.9 849.2 849.6 849.4 848.0 846.8 849.0 850.4 856.8 855.0 851.2 846.8 YEAR-DAY 98-13 90-16 1-26 2- 4 90-13 88-30 95-17 94- 3 0- 1 96- 6 94-26 88-26 95-17 MEAN QNH PRESSURE IN HPA 1019.7 1018.3 1017.2 1017.7 1016.8 1012.9 1011.3 1013.6 1017.5 1022.0 1022.5 1021.7 1017.6 MAX. QNH PRESSURE IN HPA 1030.6 1029.9 1030.3 1026.4 1024.1 1021.4 1019.2 1020.5 1027.1 1029.2 1033.8 1033.0 1033.8 YEAR-DAY 92-10 91-15 2-11 98-12 98- 8 93-23 96- 4 92-31 94-24 90-19 96-19 87- 1 96-19 MIN. QNH PRESSURE IN HPA 1004.6 1007.0 1006.2 1006.7 1006.5 1004.9 1003.5 1006.0 1007.6 1015.0 1012.9 1008.5 1003.5 YEAR-DAY 98-13 90-16 1-26 2- 4 90-13 88-30 95-17 94- 3 0- 1 96- 6 94-26 88-26 95-17 MEAN QFF PRESSURE IN HPA 1020.3 1017.3 1013.5 1010.5 1006.5 1000.1 997.6 1001.3 1007.8 1015.9 1019.8 1021.5 1011.0 MAX. QFF PRESSURE IN HPA 1036.6 1035.9 1032.1 1024.7 1019.6 1012.9 1007.9 1010.6 1022.1 1027.4 1037.0 1039.0 1039.0 YEAR-DAY 92-10 91-15 3- 3 94- 6 3- 2 95- 1 87-29 92-31 94-22 87-17 96-19 90-29 90-29 MIN. QFF PRESSURE IN HPA 1001.9 1003.1 999.7 999.7 993.8 989.5 987.5 990.9 995.1 1004.4 1006.5 1001.7 987.5 YEAR-DAY 98-13 1-21 92-31 92-18 90-13 88-30 3-26 91-12 0- 2 98- 1 93-14 94- 4 3-26 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ANAR (40839) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 30 53 N LONGITUDE 55 15 E DATA PROCESSING CENTER ELEVATION 1408.8 M CLIMATOLOGICAL NORMALS FOR THE PERIOD 1986-2005 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 0600 UTC. MEAN QFE PRESSURE IN HPA 862.2 860.9 859.8 859.9 858.9 855.5 854.0 856.2 859.9 864.0 864.5 863.9 860.0 MAX. QFE PRESSURE IN HPA 872.1 871.7 871.6 868.2 865.6 863.0 861.0 862.4 868.6 870.3 874.2 873.7 874.2 YEAR-DAY 92-10 91-15 2-11 98-12 98- 8 93-23 96- 3 99-20 94-23 93-17 96-19 87- 1 96-19 MIN. QFE PRESSURE IN HPA 847.4 851.0 849.8 850.0 850.0 848.5 846.8 849.6 850.8 857.6 855.0 852.0 846.8 YEAR-DAY 98-13 3-19 1-26 2- 4 90-13 88-30 91-14 94- 1 0- 2 96- 5 94-26 88-26 91-14 MEAN QNH PRESSURE IN HPA 1021.2 1019.7 1018.4 1018.6 1017.4 1013.4 1011.7 1014.3 1018.5 1023.3 1023.8 1023.1 1018.6 MAX. QNH PRESSURE IN HPA 1032.5 1032.1 1031.9 1028.0 1025.1 1022.1 1019.8 1021.4 1028.5 1030.4 1034.9 1034.4 1034.9 YEAR-DAY 92-10 91-15 2-11 98-12 98- 8 93-23 96- 3 99-20 94-23 93-17 96-19 87- 1 96-19 MIN. QNH PRESSURE IN HPA 1004.2 1008.3 1006.9 1007.2 1007.2 1005.4 1003.5 1006.7 1008.1 1015.9 1012.9 1009.5 1003.5 YEAR-DAY 98-13 3-19 1-26 2- 4 90-13 88-30 91-14 94- 1 0- 2 96- 5 94-26 88-26 91-14 MEAN QFF PRESSURE IN HPA 1022.1 1018.3 1013.6 1011.0 1007.1 999.9 997.4 1000.5 1008.2 1016.5 1019.5 1021.9 1011.3 MAX. QFF PRESSURE IN HPA 1038.6 1036.2 1031.0 1024.5 1017.9 1013.4 1007.4 1011.1 1021.5 1026.3 1035.9 1038.9 1038.9 YEAR-DAY 92-10 91-15 92-13 94- 5 89- 1 95- 1 87-29 92-31 94-23 93- 9 87-30 90-29 90-29 MIN. QFF PRESSURE IN HPA 1006.9 1004.8 1001.2 999.3 996.2 990.3 988.1 990.5 999.0 1006.7 1005.9 1006.8 988.1 YEAR-DAY 93- 9 94-12 87-14 92-18 91-23 92-27 91-14 94- 1 89-12 95-13 94-26 94- 4 91-14 PRESSURE AT HOUR 0900 UTC. MEAN QFE PRESSURE IN HPA 860.5 859.4 858.4 858.5 857.5 854.2 852.8 854.9 858.4 862.2 862.5 862.1 858.5 MAX. QFE PRESSURE IN HPA 870.2 871.1 869.8 867.4 864.2 861.8 860.7 862.0 867.4 868.4 872.0 872.0 872.0 YEAR-DAY 92-10 91-15 2-11 94- 5 98- 8 93-23 96- 3 92-31 94-23 90-19 96-18 87- 1 87- 1 MIN. QFE PRESSURE IN HPA 846.6 849.6 848.7 849.5 849.0 846.8 845.4 848.4 848.8 855.4 854.9 850.4 845.4 YEAR-DAY 98-13 98-16 87-14 92-18 4-14 88-30 91-14 94- 2 0- 1 96- 6 93-14 88-26 91-14 MEAN QNH PRESSURE IN HPA 1019.3 1018.0 1016.8 1016.9 1015.8 1012.0 1010.4 1012.8 1016.8 1021.1 1021.6 1021.0 1016.9 MAX. QNH PRESSURE IN HPA 1030.3 1031.4 1029.9 1027.1 1023.5 1020.7 1019.4 1020.9 1027.1 1028.3 1032.4 1032.4 1032.4 YEAR-DAY 92-10 91-15 2-11 94- 5 98- 8 93-23 96- 3 92-31 94-23 90-19 96-18 87- 1 87- 1 MIN. QNH PRESSURE IN HPA 1003.3 1006.7 1005.7 1006.6 1006.0 1003.5 1001.9 1005.3 1005.8 1013.4 1012.8 1007.6 1001.9 YEAR-DAY 98-13 98-16 87-14 92-18 4-14 88-30 91-14 94- 2 0- 1 96- 6 93-14 88-26 91-14 MEAN QFF PRESSURE IN HPA 1019.2 1015.7 1011.5 1009.1 1005.5 998.4 996.2 999.1 1006.0 1013.5 1016.1 1018.7 1009.1 MAX. QFF PRESSURE IN HPA 1034.7 1035.1 1029.8 1023.8 1016.3 1011.6 1006.4 1010.8 1020.4 1024.1 1033.6 1036.1 1036.1 YEAR-DAY 92-10 91-15 92-12 94- 5 89- 1 95- 1 96- 3 92-31 94-23 87-18 87-30 90-28 90-28 MIN. QFF PRESSURE IN HPA 1004.0 1001.2 998.7 996.5 995.9 989.3 985.9 990.1 996.4 1004.5 1004.9 1004.7 985.9 YEAR-DAY 91-25 92-25 87-14 92-18 93-29 92-27 91-14 94- 3 89-12 89- 2 93-14 94- 4 91-14 PRESSURE AT HOUR 1200 UTC. MEAN QFE PRESSURE IN HPA 859.1 857.6 856.5 856.7 855.7 852.4 851.2 853.3 856.6 860.5 861.1 860.7 856.8 MAX. QFE PRESSURE IN HPA 868.4 869.4 868.2 866.2 862.6 859.8 859.3 860.4 865.8 866.8 871.0 870.2 871.0 YEAR-DAY 92-10 91-15 2-11 94- 5 98- 8 95- 1 96- 3 92-31 94-23 93-17 96-18 87- 1 96-18 MIN. QFE PRESSURE IN HPA 847.0 848.4 847.3 847.6 847.0 845.2 844.2 847.0 847.2 853.6 853.6 849.8 844.2 YEAR-DAY 98-13 98-16 87-14 92-18 4-13 5-27 98- 8 94- 2 0- 1 96- 6 86- 7 90-25 98- 8 MEAN QNH PRESSURE IN HPA 1017.6 1015.9 1014.6 1014.8 1013.7 1010.0 1008.6 1010.9 1014.7 1019.2 1019.9 1019.5 1015.0 MAX. QNH PRESSURE IN HPA 1028.3 1029.4 1028.0 1025.7 1021.6 1018.4 1017.8 1019.1 1025.3 1026.4 1031.3 1030.3 1031.3 YEAR-DAY 92-10 91-15 2-11 94- 5 98- 8 95- 1 96- 3 92-31 94-23 93-17 96-18 87- 1 96-18 MIN. QNH PRESSURE I