STATION ESFAHAN (40800) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 32 37 N LONGITUDE 51 40 E DATA PROCESSING CENTER ELEVATION 1550.4 M MEANS AND EXTREMES FOR THE YEAR 1951 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AIR TEMPERATURE (C) 3.5 4.5 9.8 14.4 19.5 25.0 27.4 25.9 23.4 17.3 8.9 3.4 15.3 MINIMUN AIR TEMPERATURE (C) -2.1 -1.3 3.3 6.3 11.0 14.8 16.9 15.9 13.3 8.6 0.7 -2.3 7.1 DAYS WITH MINIMUM TEMP. >=21 0 0 0 0 0 0 0 2 0 0 0 0 2 DAYS WITH MINIMUM TEMP. <=-4 9 5 0 0 0 0 0 0 0 0 1 13 28 DAYS WITH FREEZING MIN.<= 0 23 20 6 1 0 0 0 0 0 0 17 24 91 TEMPERATURE RECORDS LOWEST(C) -7.0 -7.0 -2.0 -2.0 6.0 13.0 13.0 11.0 11.0 2.0 -4.0 -7.0 -7.0 DAY 12 1 9 6 5 2 30 23 12 22 25 25 MAXIMUM AIR TEMPERATURE (C) 10.7 11.3 17.5 23.1 28.6 35.2 37.5 36.1 34.6 27.3 19.2 10.9 24.3 DAYS WITH MAXIMUM TEMP. >=30 0 0 0 0 14 30 31 31 30 5 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) 17.0 19.0 23.0 28.0 34.0 38.0 41.0 41.0 37.0 33.0 23.0 18.0 41.0 DAY 22 24 29 28 19 26 10 9 1 1 4 1 DIF. BETWEEN (MAX.-MIN.) (C) 12.8 12.6 14.2 16.8 17.6 20.4 20.6 20.2 21.3 18.7 18.5 13.2 17.2 MEAN DAILY TEMP. (MDT) (C) 4.3 5.0 10.4 14.7 19.8 25.0 27.2 26.0 23.9 18.0 9.9 4.3 15.7 COOLING DEG. DAYS(BASE 21 0C) 0.0 0.0 0.0 0.0 29.0 120.0 192.5 155.0 88.5 8.5 0.0 0.0 593.5 HEATING DEG. DAYS(BASE 18 0C) 424.0 364.0 235.0 103.0 26.5 0.0 0.0 0.0 0.0 44.0 241.5 425.0 1863.0 DEWPOINT (MEAN C) -2.9 -3.0 -0.9 2.4 8.8 9.6 11.6 9.3 7.9 5.9 0.4 -2.3 3.9 MIXING RATIO (G/KG) 3.83 3.73 4.42 5.61 8.68 9.21 10.70 9.10 8.16 7.18 4.82 3.92 6.61 VAPOUR PRESSURE (HPA) 5.16 5.02 5.93 7.53 11.59 12.24 14.17 12.11 10.92 9.62 6.50 5.29 8.84 SATURATION DEF. (HPA) 3.04 3.94 6.85 10.07 12.86 21.50 24.71 23.73 20.29 11.76 5.92 3.02 12.31 RELATIVE HUMIDITY (MEAN %) 67 63 52 49 54 41 41 38 41 51 59 69 52 RELATIVE HUMIDITY (MAX. %) 89 86 78 76 78 63 62 61 64 75 82 88 75 RELATIVE HUMIDITY (MIN. %) 43 42 30 27 34 25 26 22 21 31 36 49 32 RELATIVE HUMIDITY (MEAN% 03UTC) 85 81 74 72 75 61 61 59 62 72 80 83 72 RELATIVE HUMIDITY (MEAN% 09UTC) 49 47 37 32 36 27 28 26 24 32 39 54 36 RELATIVE HUMIDITY (MEAN% 15UTC) 60 54 41 38 48 32 34 33 34 45 52 62 44 RH=0 => RELATIVE HUMIDITY < 0.5% AMOUNT OF PRECIPITATION MM. 26.4 20.2 9.3 1.1 7.6 0.0 0.0 6.0 0.0 1.0 0.4 22.0 94.0 DAYS WITH PRECIPITATION >=10 1 1 0 0 0 0 0 0 0 0 0 0 2 DAYS WITH PRECIPITATION >= 5 2 2 1 0 0 0 0 1 0 0 0 3 9 DAYS WITH PRECIPITATION >= 1 5 4 4 1 3 0 0 1 0 1 0 4 23 DAYS WITH PRECIPITATION 8 8 6 7 10 0 0 3 0 1 1 6 50 GREATEST DAILY PRECIPITATION 14.0 10.0 5.0 1.0 3.0 0.0 0.0 6.0 0.0 1.0 0.4 8.0 14.0 DAY 8 5 21 20 5 ** ** 11 ** 10 1 22 DAY WITH THUNDER STORM 0 0 1 1 7 0 0 0 0 1 0 0 10 DAYS WITH SNOW OR SLEET 1 3 0 0 0 0 0 0 0 0 0 2 6 DAYS WITH DUST 0 1 1 0 1 0 0 2 0 3 0 0 8 WIND DIRECTION (PREVAILING) 225 225 225 225 225 135 90 135 270 225 90 90 225 PREVAILING WIND SPEED(KNOTS) 6.9 6.5 9.6 8.4 11.5 5.1 6.0 5.1 4.9 11.0 5.3 4.2 8.7 PREVAILING WIND PERCENT 31.6 23.7 23.4 31.3 25.0 20.4 27.5 24.2 27.6 32.7 20.3 28.2 20.2 CALMS PERCENT OF WIND 0.8 0.9 0.8 0.4 0.4 4.2 5.3 6.5 5.9 2.4 2.1 5.2 2.9 NO. OF WIND OBSERVATION 247 224 248 240 248 240 247 248 239 248 237 248 2914 VECTOR WIND DIRECTION (MEAN) 225 237 228 242 258 83 80 76 299 249 197 198 236 VECTOR WIND MAGNITUDE(KNOTS) 1.8 1.2 1.8 2.3 2.6 0.2 1.6 1.7 1.2 4.8 1.0 1.2 1.1 WIND STEADINESES (MEAN %) 35.3 24.0 31.0 39.0 32.1 3.8 28.6 31.5 27.9 60.0 19.6 23.1 19.3 WIND SPEED (MEAN KNOTS) 5.1 5.0 5.8 5.9 8.1 5.2 5.6 5.4 4.3 8.0 5.1 5.2 5.7 FASTEST WIND DIRECTION 330 230 180 210 210 230 230 90 230 230 230 230 210 FASTEST WIND SPEED (KNOTS) 15 25 40 30 45 25 27 40 22 40 27 27 45 DAY 4 20 13 25 5 2 15 26 1 30 8 16 DAYS WITH SKY CLEAR (0-2)/8 17 9 6 9 6 28 30 26 30 22 14 17 214 DAYS WITH P.CLOUDY (3-6)/8 11 14 20 18 22 2 1 5 0 7 13 9 122 DAYS WITH CLOUDY (7-8)/8 3 5 5 3 3 0 0 0 0 2 3 5 29 DAYS WITH VISIBILITY =< 2 KM 2 2 0 0 3 1 0 1 0 1 0 3 13 DURATION OF SUNSHINE HOURS ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ESFAHAN (40800) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 32 37 N LONGITUDE 51 40 E DATA PROCESSING CENTER ELEVATION 1550.4 M MEANS AND EXTREMES FOR THE YEAR 1951 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL MEAN QFE PRESSURE IN HPA 844.0 842.9 841.8 843.5 842.8 839.4 839.4 840.5 843.6 844.0 846.0 845.0 842.7 MAX. QFE PRESSURE IN HPA 851.4 850.6 847.3 850.0 848.4 845.2 844.4 846.5 848.3 850.9 851.8 851.3 851.8 DAY-HOUR 11- 6 14- 6 14- 6 29- 6 30- 6 4- 6 26- 6 20- 6 29- 6 15- 6 11- 6 8- 6 MIN. QFE PRESSURE IN HPA 835.4 830.5 833.7 836.4 836.9 833.9 834.0 832.3 838.1 837.9 839.9 832.2 830.5 DAY-HOUR 23-15 5-18 26-12 22-15 3-12 18-15 19-15 5-15 6-15 5-12 27- 9 16-15 MEAN QNH PRESSURE IN HPA 1017.2 1016.0 1014.7 1016.6 1015.9 1011.8 1011.8 1013.1 1016.7 1017.2 1019.5 1018.4 1015.7 MAX. QNH PRESSURE IN HPA 1025.8 1024.9 1021.1 1024.2 1022.3 1018.6 1017.7 1020.1 1022.2 1025.3 1026.3 1025.7 1026.3 DAY-HOUR 11- 6 14- 6 14- 6 29- 6 30- 6 4- 6 26- 6 20- 6 29- 6 15- 6 11- 6 8- 6 MIN. QNH PRESSURE IN HPA 1007.2 1001.5 1005.2 1008.4 1009.0 1005.5 1005.6 1003.6 1010.4 1010.1 1012.5 1003.5 1001.5 DAY-HOUR 23-15 5-18 26-12 22-15 3-12 18-15 19-15 5-15 6-15 5-12 27- 9 16-15 MEAN QFF PRESSURE IN HPA 1017.9 1016.0 1011.1 1010.1 1005.9 998.4 996.9 999.3 1004.4 1008.6 1016.5 1019.2 1008.7 MAX. QFF PRESSURE IN HPA 1029.8 1028.7 1020.2 1018.4 1013.4 1006.3 1004.1 1008.3 1012.0 1019.5 1026.1 1029.6 1029.8 DAY-HOUR 14- 6 14- 6 8- 3 6- 3 30- 3 4- 3 26- 3 20- 3 29- 3 29- 3 29- 3 27- 6 MIN. QFF PRESSURE IN HPA 1002.9 999.2 999.3 1001.0 998.7 991.3 991.3 988.0 997.3 999.3 1009.2 1001.7 988.0 DAY-HOUR 23-21 19-21 30- 0 20-12 26-12 19- 9 19-12 5-21 6-12 5-12 9-12 17- 9 PRESSURE AT HOUR 0000 UTC. MEAN QFE PRESSURE IN HPA 843.9 843.0 841.9 843.4 843.2 839.7 839.7 840.7 843.9 844.3 846.2 845.1 842.9 MAX. QFE PRESSURE IN HPA 850.1 848.9 845.7 847.3 846.8 844.0 843.2 845.0 847.5 849.3 850.8 849.8 850.8 DAY 11 14 24 30 30 4 26 21 30 29 11 8 MIN. QFE PRESSURE IN HPA 835.6 832.3 835.7 839.2 838.7 835.4 836.5 833.9 841.1 838.7 840.9 837.2 832.3 DAY 24 6 27 23 3 19 20 6 7 5 27 23 MEAN QNH PRESSURE IN HPA 1017.1 1016.1 1014.8 1016.6 1016.3 1012.2 1012.2 1013.4 1017.1 1017.6 1019.8 1018.5 1016.0 MAX. QNH PRESSURE IN HPA 1024.3 1022.9 1019.2 1021.1 1020.5 1017.2 1016.3 1018.4 1021.3 1023.4 1025.1 1024.0 1025.1 DAY 11 14 24 30 30 4 26 21 30 29 11 8 MIN. QNH PRESSURE IN HPA 1007.5 1003.6 1007.6 1011.6 1011.1 1007.2 1008.5 1005.5 1013.9 1011.1 1013.6 1009.3 1003.6 DAY 24 6 27 23 3 19 20 6 7 5 27 23 MEAN QFF PRESSURE IN HPA 1016.9 1015.6 1010.6 1009.8 1006.4 999.0 997.4 999.2 1004.2 1008.8 1016.0 1018.7 1008.5 MAX. QFF PRESSURE IN HPA 1026.6 1026.0 1017.0 1016.2 1012.3 1004.9 1002.3 1005.4 1009.3 1016.7 1023.8 1026.8 1026.8 DAY 11 14 9 4 30 4 26 21 29 29 11 29 MIN. QFF PRESSURE IN HPA 1004.1 999.7 999.3 1002.9 999.7 993.0 993.9 989.4 1000.8 1000.1 1010.6 1009.5 989.4 DAY 24 20 30 21 29 19 15 6 6 5 27 15 PRESSURE AT HOUR 0300 UTC. MEAN QFE PRESSURE IN HPA 844.5 843.6 842.4 844.1 843.7 840.5 840.5 841.4 844.6 844.8 846.7 845.6 843.5 MAX. QFE PRESSURE IN HPA 850.2 849.6 846.3 849.0 847.7 844.6 843.9 845.8 847.6 849.9 850.4 851.1 851.1 DAY 11 14 14 29 30 4 26 20 29 15 29 8 MIN. QFE PRESSURE IN HPA 837.7 833.8 836.4 840.0 839.6 835.8 837.2 834.8 841.6 838.8 840.8 838.1 833.8 DAY 8 20 30 23 3 19 20 6 21 5 27 23 MEAN QNH PRESSURE IN HPA 1017.8 1016.8 1015.4 1017.4 1016.8 1013.1 1013.2 1014.2 1017.9 1018.2 1020.3 1019.1 1016.7 MAX. QNH PRESSURE IN HPA 1024.4 1023.7 1019.9 1023.0 1021.5 1017.9 1017.1 1019.3 1021.4 1024.1 1024.7 1025.5 1025.5 DAY 11 14 14 29 30 4 26 20 29 15 29 8 MIN. QNH PRESSURE IN HPA 1009.9 1005.4 1008.4 1012.6 1012.1 1007.7 1009.3 1006.5 1014.4 1011.2 1013.5 1010.4 1005.4 DAY 8 20 30 23 3 19 20 6 21 5 27 23 MEAN QFF PRESSURE IN HPA 1019.5 1017.9 1012.9 1012.2 1007.9 1000.5 999.5 1001.9 1007.3 1011.6 1019.3 1020.7 1010.9 MAX. QFF PRESSURE IN HPA 1028.2 1028.4 1020.2 1018.4 1013.4 1006.3 1004.1 1008.3 1012.0 1019.5 1026.1 1028.9 1028.9 DAY 11 14 8 6 30 4 26 20 29 29 29 29 MIN. QFF PRESSURE IN HPA 1009.0 1001.2 1002.0 1005.3 1002.7 994.7 995.5 991.9 1004.0 1001.5 1012.5 1007.8 991.9 DAY 8 20 30 21 29 19 20 6 21 5 27 15 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ESFAHAN (40800) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 32 37 N LONGITUDE 51 40 E DATA PROCESSING CENTER ELEVATION 1550.4 M MEANS AND EXTREMES FOR THE YEAR 1951 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 0600 UTC. MEAN QFE PRESSURE IN HPA 845.5 844.3 843.3 844.8 844.1 840.7 840.7 841.7 845.1 845.5 847.5 846.6 844.2 MAX. QFE PRESSURE IN HPA 851.4 850.6 847.3 850.0 848.4 845.2 844.4 846.5 848.3 850.9 851.8 851.3 851.8 DAY 11 14 14 29 30 4 26 20 29 15 11 8 MIN. QFE PRESSURE IN HPA 840.1 834.1 837.3 840.0 839.4 835.9 837.7 834.9 842.1 840.2 840.4 839.8 834.1 DAY 23 20 30 27 3 19 20 6 21 5 27 23 MEAN QNH PRESSURE IN HPA 1019.0 1017.6 1016.5 1018.2 1017.3 1013.4 1013.4 1014.6 1018.6 1019.0 1021.3 1020.2 1017.4 MAX. QNH PRESSURE IN HPA 1025.8 1024.9 1021.1 1024.2 1022.3 1018.6 1017.7 1020.1 1022.2 1025.3 1026.3 1025.7 1026.3 DAY 11 14 14 29 30 4 26 20 29 15 11 8 MIN. QNH PRESSURE IN HPA 1012.7 1005.7 1009.4 1012.6 1011.9 1007.8 1009.9 1006.6 1015.0 1012.8 1013.0 1012.3 1005.7 DAY 23 20 30 27 3 19 20 6 21 5 27 23 MEAN QFF PRESSURE IN HPA 1020.2 1018.0 1013.1 1011.3 1006.9 999.8 998.2 1000.5 1005.9 1009.8 1018.3 1021.5 1010.3 MAX. QFF PRESSURE IN HPA 1029.8 1028.7 1019.3 1016.9 1012.3 1006.1 1002.9 1006.1 1011.4 1018.1 1026.0 1029.6 1029.8 DAY 14 14 14 6 12 4 26 20 28 29 29 27 MIN. QFF PRESSURE IN HPA 1011.0 1001.1 1003.1 1003.9 1001.4 993.5 994.0 991.6 1001.9 1001.0 1009.7 1010.0 991.6 DAY 23 20 26 27 3 19 20 6 1 5 27 17 PRESSURE AT HOUR 0900 UTC. MEAN QFE PRESSURE IN HPA 843.9 843.1 842.0 843.5 842.8 839.6 839.7 840.7 843.8 843.7 845.9 844.8 842.8 MAX. QFE PRESSURE IN HPA 849.7 849.5 845.8 849.3 847.1 843.9 843.2 845.2 846.7 849.6 849.7 849.4 849.7 DAY 14 13 3 29 30 4 11 20 29 28 29 8 MIN. QFE PRESSURE IN HPA 837.6 834.4 836.1 838.7 838.2 834.8 836.8 833.8 840.5 839.2 839.9 833.4 833.4 DAY 23 6 26 22 3 19 19 5 6 5 27 17 MEAN QNH PRESSURE IN HPA 1017.2 1016.1 1014.9 1016.6 1015.8 1012.1 1012.2 1013.3 1016.9 1016.8 1019.4 1018.1 1015.8 MAX. QNH PRESSURE IN HPA 1023.9 1023.6 1019.3 1023.4 1020.8 1017.1 1016.3 1018.6 1020.4 1023.7 1023.9 1023.5 1023.9 DAY 14 13 3 29 30 4 11 20 29 28 29 8 MIN. QNH PRESSURE IN HPA 1009.8 1006.1 1008.0 1011.1 1010.5 1006.5 1008.9 1005.4 1013.2 1011.6 1012.5 1004.9 1004.9 DAY 23 6 26 22 3 19 19 5 6 5 27 17 MEAN QFF PRESSURE IN HPA 1017.0 1015.6 1010.8 1009.5 1005.1 998.3 996.5 998.6 1003.7 1007.1 1015.2 1018.0 1008.0 MAX. QFF PRESSURE IN HPA 1026.4 1026.6 1017.5 1014.6 1011.9 1004.2 1001.8 1004.1 1008.6 1017.2 1021.8 1026.1 1026.6 DAY 14 13 3 5 12 4 26 21 29 28 29 29 MIN. QFF PRESSURE IN HPA 1007.0 1001.7 1000.8 1002.5 999.8 991.3 992.4 989.2 999.0 1000.4 1009.9 1001.7 989.2 DAY 23 20 26 27 3 19 7 6 6 5 27 17 PRESSURE AT HOUR 1200 UTC. MEAN QFE PRESSURE IN HPA 842.8 841.9 840.6 842.2 841.6 838.2 838.2 839.3 842.0 842.4 844.6 843.7 841.4 MAX. QFE PRESSURE IN HPA 848.7 848.3 844.5 847.3 845.3 841.6 841.7 843.8 844.4 847.4 848.5 848.0 848.7 DAY 14 13 2 29 30 3 25 20 28 15 29 31 MIN. QFE PRESSURE IN HPA 835.6 834.2 833.7 836.8 836.9 834.1 834.8 832.8 838.9 837.9 840.2 833.2 832.8 DAY 23 6 26 22 3 19 19 5 6 5 27 16 MEAN QNH PRESSURE IN HPA 1015.8 1014.8 1013.2 1015.1 1014.4 1010.5 1010.5 1011.7 1014.9 1015.3 1017.9 1016.9 1014.3 MAX. QNH PRESSURE IN HPA 1022.7 1022.2 1017.8 1021.1 1018.7 1014.4 1014.6 1017.0 1017.7 1021.2 1022.5 1021.9 1022.7 DAY 14 13 2 29 30 3 25 20 28 15 29 31 MIN. QNH PRESSURE IN HPA 1007.5 1005.8 1005.2 1008.9 1009.0 1005.7 1006.5 1004.2 1011.3 1010.1 1012.8 1004.7 1004.2 DAY 23 6 26 22 3 19 19 5 6 5 27 16 MEAN QFF PRESSURE IN HPA 1015.8 1014.1 1009.0 1008.2 1004.3 996.9 995.3 997.3 1001.9 1006.5 1014.1 1017.1 1006.7 MAX. QFF PRESSURE IN HPA 1025.6 1024.6 1016.0 1015.0 1010.2 1002.8 999.9 1003.3 1006.0 1012.5 1021.7 1025.2 1025.6 DAY 14 13 2 4 12 3 26 21 28 28 29 29 MIN. QFF PRESSURE IN HPA 1005.2 1002.8 999.3 1001.0 998.7 991.6 991.3 988.2 997.3 999.3 1009.2 1002.7 988.2 DAY 23 20 26 20 26 18 19 5 6 5 9 16 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ESFAHAN (40800) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 32 37 N LONGITUDE 51 40 E DATA PROCESSING CENTER ELEVATION 1550.4 M MEANS AND EXTREMES FOR THE YEAR 1951 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 1500 UTC. MEAN QFE PRESSURE IN HPA 843.5 842.1 840.6 842.3 841.5 837.7 837.6 839.0 841.8 842.8 845.0 844.2 841.5 MAX. QFE PRESSURE IN HPA 849.2 848.6 844.8 846.5 845.0 841.6 841.4 843.6 844.6 846.9 848.6 848.9 849.2 DAY 14 13 3 29 29 3 25 20 28 15 29 31 MIN. QFE PRESSURE IN HPA 835.4 832.1 834.0 836.4 837.3 833.9 834.0 832.3 838.1 838.2 841.3 832.2 832.1 DAY 23 5 26 22 3 18 19 5 6 5 21 16 MEAN QNH PRESSURE IN HPA 1016.6 1015.0 1013.3 1015.3 1014.4 1009.9 1009.8 1011.4 1014.6 1015.8 1018.4 1017.4 1014.3 MAX. QNH PRESSURE IN HPA 1023.3 1022.6 1018.2 1020.1 1018.4 1014.4 1014.2 1016.8 1017.9 1020.6 1022.6 1022.9 1023.3 DAY 14 13 3 29 29 3 25 20 28 15 29 31 MIN. QNH PRESSURE IN HPA 1007.2 1003.4 1005.6 1008.4 1009.4 1005.5 1005.6 1003.6 1010.4 1010.5 1014.1 1003.5 1003.4 DAY 23 5 26 22 3 18 19 5 6 5 21 16 MEAN QFF PRESSURE IN HPA 1018.3 1015.9 1010.8 1009.9 1005.2 997.0 995.8 998.9 1003.8 1009.1 1017.2 1019.0 1008.4 MAX. QFF PRESSURE IN HPA 1027.8 1026.1 1017.8 1017.0 1010.5 1003.3 1000.8 1005.6 1008.3 1015.1 1024.3 1026.8 1027.8 DAY 14 13 2 4 12 3 26 20 28 28 29 27 MIN. QFF PRESSURE IN HPA 1006.2 1004.0 1000.7 1002.6 999.6 991.6 991.6 989.6 998.7 1001.5 1011.3 1001.8 989.6 DAY 23 5 26 22 28 18 19 6 6 5 9 16 PRESSURE AT HOUR 1800 UTC. MEAN QFE PRESSURE IN HPA 844.0 842.7 841.9 843.7 842.9 839.1 839.1 840.5 843.6 844.2 845.9 845.2 842.7 MAX. QFE PRESSURE IN HPA 849.1 849.1 846.1 847.8 846.7 843.5 842.6 845.1 847.1 848.8 850.5 850.3 850.5 DAY 14 13 14 29 29 3 24 20 29 28 10 31 MIN. QFE PRESSURE IN HPA 835.9 830.5 834.7 838.9 838.4 834.6 835.3 833.2 840.3 839.1 842.5 838.1 830.5 DAY 23 5 26 22 2 10 19 5 20 4 26 22 MEAN QNH PRESSURE IN HPA 1017.3 1015.8 1014.8 1016.9 1016.0 1011.5 1011.5 1013.2 1016.7 1017.4 1019.5 1018.6 1015.8 MAX. QNH PRESSURE IN HPA 1023.2 1023.2 1019.7 1021.6 1020.4 1016.6 1015.6 1018.5 1020.8 1022.8 1024.8 1024.6 1024.8 DAY 14 13 14 29 29 3 24 20 29 28 10 31 MIN. QNH PRESSURE IN HPA 1007.8 1001.5 1006.4 1011.3 1010.7 1006.3 1007.1 1004.7 1012.9 1011.5 1015.5 1010.4 1001.5 DAY 23 5 26 22 2 10 19 5 20 4 26 22 MEAN QFF PRESSURE IN HPA 1018.5 1016.0 1011.4 1010.0 1005.6 997.9 996.4 999.2 1004.2 1008.4 1016.4 1019.9 1008.7 MAX. QFF PRESSURE IN HPA 1027.4 1027.0 1018.2 1016.6 1011.0 1004.2 1001.4 1005.5 1009.7 1016.4 1023.3 1028.8 1028.8 DAY 14 13 14 5 11 3 26 20 28 28 29 31 MIN. QFF PRESSURE IN HPA 1004.7 1001.5 1000.1 1002.4 1000.1 991.9 991.7 989.3 999.7 999.6 1009.6 1011.5 989.3 DAY 23 5 26 20 28 10 19 5 1 4 9 16 PRESSURE AT HOUR 2100 UTC. MEAN QFE PRESSURE IN HPA 843.9 842.8 841.9 843.8 843.1 839.5 839.4 840.7 843.9 844.2 846.1 845.2 842.9 MAX. QFE PRESSURE IN HPA 848.6 849.4 845.7 847.7 846.7 844.0 843.0 845.2 847.7 849.1 850.8 850.3 850.8 DAY 10 13 14 29 29 3 25 20 29 28 10 31 MIN. QFE PRESSURE IN HPA 835.7 831.4 835.0 839.0 838.5 834.9 835.7 833.2 840.8 838.5 841.1 837.6 831.4 DAY 23 5 26 22 2 18 19 5 20 4 26 22 MEAN QNH PRESSURE IN HPA 1017.1 1015.8 1014.8 1017.0 1016.2 1012.0 1011.9 1013.4 1017.1 1017.5 1019.7 1018.6 1015.9 MAX. QNH PRESSURE IN HPA 1022.6 1023.5 1019.2 1021.5 1020.4 1017.2 1016.1 1018.6 1021.5 1023.2 1025.1 1024.6 1025.1 DAY 10 13 14 29 29 3 25 20 29 28 10 31 MIN. QNH PRESSURE IN HPA 1007.6 1002.6 1006.8 1011.4 1010.8 1006.6 1007.6 1004.7 1013.5 1010.8 1013.9 1009.8 1002.6 DAY 23 5 26 22 2 18 19 5 20 4 26 22 MEAN QFF PRESSURE IN HPA 1017.1 1015.2 1010.6 1009.8 1005.6 998.3 996.4 998.8 1004.0 1008.0 1015.8 1018.6 1008.2 MAX. QFF PRESSURE IN HPA 1025.6 1026.8 1017.1 1016.8 1011.2 1004.4 1001.4 1005.3 1009.2 1015.5 1022.7 1027.7 1027.7 DAY 11 13 3 5 12 3 25 20 28 28 10 31 MIN. QFF PRESSURE IN HPA 1002.9 999.2 999.8 1003.0 1000.2 991.6 992.2 988.0 1000.3 999.4 1010.1 1009.5 988.0 DAY 23 19 26 20 28 18 19 5 20 4 9 14 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ESFAHAN (40800) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 32 37 N LONGITUDE 51 40 E DATA PROCESSING CENTER ELEVATION 1550.4 M MEANS AND EXTREMES FOR THE YEAR 1952 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AIR TEMPERATURE (C) 1.1 6.5 10.3 15.6 19.9 25.3 27.2 24.7 21.3 14.8 8.2 4.4 14.9 MINIMUN AIR TEMPERATURE (C) -3.6 -0.1 2.6 8.1 11.7 15.3 17.0 14.1 11.4 4.5 0.5 -0.7 6.7 DAYS WITH MINIMUM TEMP. >=21 0 0 0 0 0 1 0 0 0 0 0 0 1 DAYS WITH MINIMUM TEMP. <=-4 15 3 1 0 0 0 0 0 0 0 1 2 22 DAYS WITH FREEZING MIN.<= 0 29 19 7 0 0 0 0 0 0 0 14 24 93 TEMPERATURE RECORDS LOWEST(C) -9.0 -6.0 -5.0 2.0 8.0 12.0 13.0 12.0 8.0 1.0 -4.0 -4.0 -9.0 DAY 6 16 6 16 2 14 25 18 24 28 16 18 MAXIMUM AIR TEMPERATURE (C) 7.3 14.2 18.3 23.6 28.4 35.4 37.4 35.0 32.0 26.9 17.7 11.8 24.0 DAYS WITH MAXIMUM TEMP. >=30 0 0 0 2 14 30 31 31 25 2 0 0 135 DAYS WITH MAXIMUM TEMP. <= 0 0 0 0 0 0 0 0 0 0 0 0 0 0 TEMPERATURE RECORDS HIGHEST(C) 14.0 19.0 27.0 32.0 36.0 41.0 41.0 37.0 36.0 31.0 25.0 17.0 41.0 DAY 24 7 31 6 31 29 8 11 1 2 4 11 DIF. BETWEEN (MAX.-MIN.) (C) 10.9 14.3 15.7 15.5 16.7 20.1 20.4 20.9 20.6 22.4 17.2 12.5 17.3 MEAN DAILY TEMP. (MDT) (C) 1.9 7.0 10.5 15.9 20.0 25.3 27.2 24.5 21.7 15.7 9.1 5.5 15.4 COOLING DEG. DAYS(BASE 21 0C) 0.0 0.0 0.0 0.0 28.5 130.0 192.5 109.5 29.0 0.0 0.0 0.0 489.5 HEATING DEG. DAYS(BASE 18 0C) 500.5 318.5 234.0 76.0 12.5 0.0 0.0 0.0 0.0 73.5 266.5 387.0 1868.5 DEWPOINT (MEAN C) -3.2 -2.2 -2.1 5.6 10.6 11.7 10.6 8.6 8.9 3.0 0.1 0.3 4.3 MIXING RATIO (G/KG) 3.64 3.96 4.15 7.00 9.76 10.86 9.79 8.61 8.69 5.73 4.67 4.70 6.80 VAPOUR PRESSURE (HPA) 4.92 5.32 5.56 9.36 13.01 14.37 12.99 11.47 11.64 7.73 6.30 6.36 9.09 SATURATION DEF. (HPA) 1.97 4.92 7.85 9.52 11.80 19.95 25.35 21.73 15.75 10.93 5.65 2.35 11.48 RELATIVE HUMIDITY (MEAN %) 75 57 46 55 58 46 39 39 49 50 61 77 54 RELATIVE HUMIDITY (MAX. %) 90 80 71 78 78 68 62 63 74 78 85 92 77 RELATIVE HUMIDITY (MIN. %) 55 34 25 35 40 31 22 24 29 25 38 56 35 RELATIVE HUMIDITY (MEAN% 03UTC) 86 77 67 71 74 61 60 62 72 78 81 90 73 RELATIVE HUMIDITY (MEAN% 09UTC) 61 42 30 41 44 34 24 25 32 29 43 60 39 RELATIVE HUMIDITY (MEAN% 15UTC) 72 46 34 46 49 39 30 33 42 46 55 72 47 RH=0 => RELATIVE HUMIDITY < 0.5% AMOUNT OF PRECIPITATION MM. 50.4 14.4 12.1 7.9 14.0 0.0 0.0 0.0 2.0 0.0 0.1 23.5 124.4 DAYS WITH PRECIPITATION >=10 3 1 0 0 0 0 0 0 0 0 0 0 4 DAYS WITH PRECIPITATION >= 5 4 1 2 1 2 0 0 0 0 0 0 2 12 DAYS WITH PRECIPITATION >= 1 5 2 3 3 4 0 0 0 1 0 0 6 24 DAYS WITH PRECIPITATION 6 2 4 9 5 0 1 0 4 0 3 6 40 GREATEST DAILY PRECIPITATION 18.0 13.4 5.0 5.0 6.0 0.0 0.0 0.0 2.0 0.0 0.1 6.5 18.0 DAY 3 23 2 14 7 ** ** ** 11 ** 21 15 DAY WITH THUNDER STORM 0 0 0 1 1 0 0 0 0 0 0 0 2 DAYS WITH SNOW OR SLEET 4 0 0 0 0 0 0 0 0 0 0 0 4 DAYS WITH DUST 0 0 2 1 2 1 1 0 0 0 0 0 7 WIND DIRECTION (PREVAILING) 270 225 225 225 270 270 135 135 135 135 135 135 135 PREVAILING WIND SPEED(KNOTS) 3.3 9.3 13.0 13.6 6.6 4.9 5.1 4.9 4.6 3.4 4.0 3.1 4.7 PREVAILING WIND PERCENT 25.4 22.4 35.2 25.8 37.5 26.7 39.5 48.8 28.8 27.2 31.3 41.5 23.3 CALMS PERCENT OF WIND 4.0 1.3 0.4 0.0 0.0 0.0 2.0 8.1 15.8 13.0 2.9 8.9 4.7 NO. OF WIND OBSERVATION 248 232 247 240 248 240 248 248 240 246 240 248 2925 VECTOR WIND DIRECTION (MEAN) 270 228 226 219 244 280 103 105 92 108 109 117 194 VECTOR WIND MAGNITUDE(KNOTS) 0.9 2.1 5.4 4.2 4.1 1.3 2.5 3.2 1.4 1.1 1.2 1.7 1.1 WIND STEADINESES (MEAN %) 25.7 28.8 62.1 41.6 50.6 21.3 50.0 72.7 34.1 34.4 24.0 56.7 19.3 WIND SPEED (MEAN KNOTS) 3.5 7.3 8.7 10.1 8.1 6.1 5.0 4.4 4.1 3.2 5.0 3.0 5.7 FASTEST WIND DIRECTION 210 120 210 180 230 210 120 90 90 330 270 120 180 FASTEST WIND SPEED (KNOTS) 15 40 33 45 33 30 25 20 30 20 25 15 45 DAY 11 22 4 14 5 9 14 13 18 23 13 12 DAYS WITH SKY CLEAR (0-2)/8 14 14 16 12 13 28 25 27 24 26 18 13 230 DAYS WITH P.CLOUDY (3-6)/8 8 12 10 10 13 2 6 4 6 5 10 10 96 DAYS WITH CLOUDY (7-8)/8 9 3 5 8 5 0 0 0 0 0 2 8 40 DAYS WITH VISIBILITY =< 2 KM 6 0 1 2 1 0 1 0 1 0 1 5 18 DURATION OF SUNSHINE HOURS ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ESFAHAN (40800) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 32 37 N LONGITUDE 51 40 E DATA PROCESSING CENTER ELEVATION 1550.4 M MEANS AND EXTREMES FOR THE YEAR 1952 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL MEAN QFE PRESSURE IN HPA 844.8 841.9 840.8 842.7 842.5 839.1 838.6 840.7 844.9 847.3 846.1 848.0 843.1 MAX. QFE PRESSURE IN HPA 852.3 848.6 848.8 848.7 849.0 848.0 843.0 846.5 850.8 852.1 852.9 855.9 855.9 DAY-HOUR 1- 6 8- 6 27- 6 4- 6 12- 6 4- 6 13-15 16- 6 28- 6 31- 6 19- 6 7- 6 MIN. QFE PRESSURE IN HPA 835.1 832.5 833.0 835.6 837.7 832.1 834.9 836.0 837.5 841.2 841.2 842.4 832.1 DAY-HOUR 11-12 12-12 24-12 14-12 4-12 24-15 14-15 6-15 30- 0 13-15 13-12 28-12 MEAN QNH PRESSURE IN HPA 1018.2 1014.8 1013.5 1015.7 1015.5 1011.5 1010.9 1013.4 1018.3 1021.0 1019.7 1021.9 1016.2 MAX. QNH PRESSURE IN HPA 1026.9 1022.6 1022.8 1022.7 1023.0 1021.9 1016.1 1020.1 1025.1 1026.7 1027.6 1031.1 1031.1 DAY-HOUR 1- 6 8- 6 27- 6 4- 6 12- 6 4- 6 13-15 16- 6 28- 6 31- 6 19- 6 7- 6 MIN. QNH PRESSURE IN HPA 1006.9 1003.8 1004.4 1007.5 1009.9 1003.4 1006.6 1007.9 1009.7 1014.0 1014.0 1015.4 1003.4 DAY-HOUR 11-12 12-12 24-12 14-12 4-12 24-15 14-15 6-15 30- 0 13-15 13-12 28-12 MEAN QFF PRESSURE IN HPA 1020.6 1013.5 1009.6 1008.2 1005.1 997.8 996.2 1000.3 1007.3 1014.3 1017.3 1022.0 1009.3 MAX. QFF PRESSURE IN HPA 1031.8 1020.8 1020.8 1016.4 1014.6 1009.5 1003.1 1008.0 1016.7 1023.2 1028.3 1032.2 1032.2 DAY-HOUR 1- 6 16- 3 15- 3 4- 6 12- 6 4- 6 23- 6 16- 3 28- 3 28- 3 16- 6 7- 6 MIN. QFF PRESSURE IN HPA 1006.9 998.9 997.5 999.3 996.7 989.2 991.8 995.2 998.9 1006.6 1007.5 1013.3 989.2 DAY-HOUR 11-12 12- 9 24-12 14-12 24-12 20-18 13-12 7-12 30- 0 7-12 13-12 28-12 PRESSURE AT HOUR 0000 UTC. MEAN QFE PRESSURE IN HPA 844.8 842.1 840.8 842.9 842.6 839.5 838.9 841.0 844.8 847.5 846.5 848.0 843.3 MAX. QFE PRESSURE IN HPA 850.6 847.7 846.5 847.2 846.8 846.3 841.4 845.0 849.3 850.4 850.9 854.2 854.2 DAY 1 7 15 5 12 4 23 16 28 2 19 7 MIN. QFE PRESSURE IN HPA 836.9 833.5 833.7 836.2 838.4 834.6 836.8 837.7 837.5 842.7 842.1 842.5 833.5 DAY 11 23 2 24 24 25 14 7 30 14 14 15 MEAN QNH PRESSURE IN HPA 1018.2 1015.0 1013.5 1015.9 1015.6 1012.0 1011.2 1013.7 1018.1 1021.3 1020.1 1021.8 1016.4 MAX. QNH PRESSURE IN HPA 1024.9 1021.5 1020.1 1021.0 1020.5 1019.9 1014.2 1018.4 1023.4 1024.7 1025.3 1029.1 1029.1 DAY 1 7 15 5 12 4 23 16 28 2 19 7 MIN. QNH PRESSURE IN HPA 1009.0 1005.0 1005.2 1008.2 1010.7 1006.3 1008.9 1009.9 1009.7 1015.7 1015.0 1015.5 1005.0 DAY 11 23 2 24 24 25 14 7 30 14 14 15 MEAN QFF PRESSURE IN HPA 1020.1 1013.0 1009.3 1008.2 1005.3 998.5 996.4 1000.4 1006.7 1013.8 1017.0 1021.3 1009.2 MAX. QFF PRESSURE IN HPA 1028.5 1018.2 1017.0 1014.3 1011.7 1006.8 1000.8 1004.8 1013.1 1018.9 1025.1 1027.7 1028.5 DAY 1 7 15 5 7 5 31 16 28 28 16 7 MIN. QFF PRESSURE IN HPA 1007.8 999.2 998.9 1000.5 997.0 992.3 992.9 996.6 998.9 1008.3 1008.9 1014.2 992.3 DAY 11 23 2 24 24 25 14 7 30 14 14 15 PRESSURE AT HOUR 0300 UTC. MEAN QFE PRESSURE IN HPA 845.2 842.4 841.5 843.4 843.2 840.1 839.7 841.7 845.5 848.0 846.9 848.3 843.8 MAX. QFE PRESSURE IN HPA 852.1 847.7 847.6 847.7 848.0 847.4 842.2 846.1 850.0 851.0 851.6 854.7 854.7 DAY 1 7 27 5 12 4 23 16 28 17 19 7 MIN. QFE PRESSURE IN HPA 836.6 833.1 834.1 837.2 838.9 835.0 837.4 838.4 838.2 843.4 842.6 842.7 833.1 DAY 11 23 2 24 1 25 13 7 30 14 14 28 MEAN QNH PRESSURE IN HPA 1018.6 1015.3 1014.3 1016.5 1016.3 1012.7 1012.2 1014.5 1018.9 1021.9 1020.6 1022.2 1017.0 MAX. QNH PRESSURE IN HPA 1026.7 1021.5 1021.4 1021.5 1021.9 1021.2 1015.1 1019.7 1024.2 1025.4 1026.1 1029.7 1029.7 DAY 1 7 27 5 12 4 23 16 28 17 19 7 MIN. QNH PRESSURE IN HPA 1008.6 1004.5 1005.7 1009.3 1011.3 1006.8 1009.6 1010.7 1010.5 1016.5 1015.6 1015.7 1004.5 DAY 11 23 2 24 1 25 13 7 30 14 14 28 MEAN QFF PRESSURE IN HPA 1021.8 1015.1 1011.6 1010.1 1006.7 999.8 998.3 1002.9 1009.7 1017.5 1019.9 1023.2 1011.4 MAX. QFF PRESSURE IN HPA 1031.4 1020.8 1020.8 1015.7 1013.1 1009.1 1002.7 1008.0 1016.7 1023.2 1027.8 1030.7 1031.4 DAY 1 16 15 4 12 4 30 16 28 28 16 7 MIN. QFF PRESSURE IN HPA 1007.9 1000.0 1001.3 1003.0 999.0 993.7 995.1 998.9 1002.5 1011.9 1012.9 1014.9 993.7 DAY 11 23 2 24 24 25 13 7 30 14 14 28 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ESFAHAN (40800) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 32 37 N LONGITUDE 51 40 E DATA PROCESSING CENTER ELEVATION 1550.4 M MEANS AND EXTREMES FOR THE YEAR 1952 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 0600 UTC. MEAN QFE PRESSURE IN HPA 846.0 843.3 842.3 844.0 843.7 840.4 839.8 842.2 846.6 848.9 847.6 849.4 844.5 MAX. QFE PRESSURE IN HPA 852.3 848.6 848.8 848.7 849.0 848.0 842.8 846.5 850.8 852.1 852.9 855.9 855.9 DAY 1 8 27 4 12 4 23 16 28 31 19 7 MIN. QFE PRESSURE IN HPA 837.5 834.0 836.2 838.5 839.5 835.6 837.5 839.1 844.3 844.1 843.4 844.3 834.0 DAY 11 12 4 14 24 24 13 7 4 8 14 28 MEAN QNH PRESSURE IN HPA 1019.5 1016.5 1015.3 1017.3 1016.8 1013.0 1012.4 1015.1 1020.2 1022.9 1021.4 1023.5 1017.8 MAX. QNH PRESSURE IN HPA 1026.9 1022.6 1022.8 1022.7 1023.0 1021.9 1015.8 1020.1 1025.1 1026.7 1027.6 1031.1 1031.1 DAY 1 8 27 4 12 4 23 16 28 31 19 7 MIN. QNH PRESSURE IN HPA 1009.7 1005.6 1008.2 1010.8 1012.0 1007.5 1009.7 1011.5 1017.6 1017.3 1016.5 1017.6 1005.6 DAY 11 12 4 14 24 24 13 7 4 8 14 28 MEAN QFF PRESSURE IN HPA 1022.6 1015.6 1011.4 1009.8 1006.5 999.2 997.4 1001.9 1008.8 1015.9 1019.0 1024.4 1011.0 MAX. QFF PRESSURE IN HPA 1031.8 1020.7 1019.8 1016.4 1014.6 1009.5 1003.1 1007.1 1014.1 1022.0 1028.3 1032.2 1032.2 DAY 1 9 15 4 12 4 23 16 28 28 16 7 MIN. QFF PRESSURE IN HPA 1009.5 1001.6 1000.4 1002.4 1000.0 993.0 995.1 998.0 1004.6 1008.2 1011.9 1016.5 993.0 DAY 11 12 24 14 24 24 13 7 5 8 14 28 PRESSURE AT HOUR 0900 UTC. MEAN QFE PRESSURE IN HPA 844.8 842.2 841.0 842.8 842.6 839.3 838.9 841.1 845.3 847.4 846.1 848.2 843.3 MAX. QFE PRESSURE IN HPA 849.9 847.0 848.4 847.7 847.7 846.6 841.9 845.1 849.4 850.6 851.6 854.3 854.3 DAY 1 8 27 4 12 4 23 16 28 2 19 7 MIN. QFE PRESSURE IN HPA 836.3 832.6 834.5 836.9 839.0 834.1 836.2 838.1 843.1 842.8 842.0 843.6 832.6 DAY 11 12 24 14 1 24 13 6 4 8 14 28 MEAN QNH PRESSURE IN HPA 1018.2 1015.1 1013.7 1015.8 1015.6 1011.8 1011.3 1013.8 1018.7 1021.2 1019.7 1022.1 1016.4 MAX. QNH PRESSURE IN HPA 1024.1 1020.7 1022.3 1021.5 1021.5 1020.3 1014.8 1018.5 1023.5 1024.9 1026.1 1029.2 1029.2 DAY 1 8 27 4 12 4 23 16 28 2 19 7 MIN. QNH PRESSURE IN HPA 1008.3 1004.0 1006.2 1009.0 1011.4 1005.7 1008.2 1010.4 1016.2 1015.8 1014.9 1016.8 1004.0 DAY 11 12 24 14 1 24 13 6 4 8 14 28 MEAN QFF PRESSURE IN HPA 1020.0 1013.1 1009.1 1007.6 1004.6 997.7 996.0 999.8 1006.6 1013.3 1016.2 1021.4 1008.8 MAX. QFF PRESSURE IN HPA 1028.2 1020.1 1017.8 1013.7 1012.1 1006.9 1000.3 1004.4 1011.7 1017.9 1025.7 1027.5 1028.2 DAY 1 9 27 4 12 4 23 23 28 31 19 7 MIN. QFF PRESSURE IN HPA 1008.2 998.9 998.4 1000.6 998.1 991.3 992.4 996.0 1002.5 1006.7 1009.4 1015.1 991.3 DAY 11 12 24 14 24 24 13 6 5 8 14 28 PRESSURE AT HOUR 1200 UTC. MEAN QFE PRESSURE IN HPA 843.9 840.7 839.7 841.3 841.2 837.8 837.5 839.5 843.7 845.9 844.8 846.9 841.9 MAX. QFE PRESSURE IN HPA 848.5 845.3 846.6 845.9 846.2 844.8 840.2 843.6 847.2 849.3 849.9 852.7 852.7 DAY 1 8 27 4 6 4 30 16 30 17 19 7 MIN. QFE PRESSURE IN HPA 835.1 832.5 833.0 835.6 837.7 832.5 835.1 836.7 841.8 841.9 841.2 842.4 832.5 DAY 11 12 24 14 4 24 13 6 4 8 13 28 MEAN QNH PRESSURE IN HPA 1017.1 1013.4 1012.3 1014.0 1014.0 1010.1 1009.6 1012.0 1016.9 1019.5 1018.1 1020.7 1014.8 MAX. QNH PRESSURE IN HPA 1022.5 1018.7 1020.3 1019.4 1019.8 1018.2 1012.8 1016.8 1021.0 1023.4 1024.1 1027.4 1027.4 DAY 1 8 27 4 6 4 30 16 30 17 19 7 MIN. QNH PRESSURE IN HPA 1006.9 1003.8 1004.4 1007.5 1009.9 1003.8 1006.9 1008.7 1014.7 1014.8 1014.0 1015.4 1003.8 DAY 11 12 24 14 4 24 13 6 4 8 13 28 MEAN QFF PRESSURE IN HPA 1018.9 1011.2 1007.9 1006.1 1003.3 995.9 994.7 998.4 1005.3 1011.8 1014.9 1020.0 1007.4 MAX. QFF PRESSURE IN HPA 1026.7 1016.5 1015.4 1012.2 1012.2 1004.4 999.5 1003.4 1010.4 1017.2 1024.3 1025.8 1026.7 DAY 1 9 14 4 6 4 30 23 30 31 16 7 MIN. QFF PRESSURE IN HPA 1006.9 999.9 997.5 999.3 996.7 989.6 991.8 995.2 1001.7 1006.6 1007.5 1013.3 989.6 DAY 11 12 24 14 24 24 13 7 4 7 13 28 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ESFAHAN (40800) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 32 37 N LONGITUDE 51 40 E DATA PROCESSING CENTER ELEVATION 1550.4 M MEANS AND EXTREMES FOR THE YEAR 1952 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 1500 UTC. MEAN QFE PRESSURE IN HPA 844.3 841.1 839.6 841.4 841.2 837.2 837.1 839.1 843.7 846.0 845.1 847.4 841.9 MAX. QFE PRESSURE IN HPA 848.4 845.8 846.4 845.6 846.1 843.9 843.0 842.8 847.3 849.6 849.8 853.0 853.0 DAY 1 6 27 4 12 4 13 16 30 27 19 7 MIN. QFE PRESSURE IN HPA 835.3 833.0 833.3 836.3 837.8 832.1 834.9 836.0 841.5 841.2 841.3 843.2 832.1 DAY 11 12 11 23 4 24 14 6 3 13 28 28 MEAN QNH PRESSURE IN HPA 1017.6 1013.9 1012.1 1014.2 1013.9 1009.4 1009.2 1011.5 1016.9 1019.6 1018.5 1021.2 1014.8 MAX. QNH PRESSURE IN HPA 1022.3 1019.3 1020.0 1019.1 1019.7 1017.1 1016.1 1015.8 1021.1 1023.7 1024.0 1027.7 1027.7 DAY 1 6 27 4 12 4 13 16 30 27 19 7 MIN. QNH PRESSURE IN HPA 1007.1 1004.4 1004.8 1008.3 1010.0 1003.4 1006.6 1007.9 1014.3 1014.0 1014.1 1016.3 1003.4 DAY 11 12 11 23 4 24 14 6 3 13 28 28 MEAN QFF PRESSURE IN HPA 1020.6 1013.6 1009.3 1007.6 1004.0 996.0 995.3 999.6 1007.4 1015.0 1017.6 1022.0 1009.0 MAX. QFF PRESSURE IN HPA 1027.4 1019.0 1018.2 1013.1 1011.7 1004.2 1001.9 1004.5 1013.2 1021.3 1026.1 1028.6 1028.6 DAY 1 15 14 16 6 4 13 16 30 27 19 7 MIN. QFF PRESSURE IN HPA 1007.1 1001.9 1000.5 1001.3 997.9 989.8 992.2 995.8 1003.3 1009.0 1011.9 1015.7 989.8 DAY 11 12 24 23 24 24 14 6 2 13 13 28 PRESSURE AT HOUR 1800 UTC. MEAN QFE PRESSURE IN HPA 844.9 841.9 840.7 842.9 842.8 838.9 838.4 840.6 845.0 847.1 846.0 848.1 843.1 MAX. QFE PRESSURE IN HPA 848.2 847.4 847.0 846.9 847.9 846.2 841.2 844.4 849.3 850.4 850.6 853.8 853.8 DAY 21 6 27 4 12 3 30 15 30 31 19 6 MIN. QFE PRESSURE IN HPA 836.9 833.5 834.2 838.2 838.9 833.9 836.0 837.0 842.3 842.3 842.1 843.6 833.5 DAY 11 12 1 23 4 24 13 6 4 13 28 14 MEAN QNH PRESSURE IN HPA 1018.2 1014.8 1013.4 1015.9 1015.8 1011.3 1010.7 1013.3 1018.4 1020.9 1019.5 1022.0 1016.2 MAX. QNH PRESSURE IN HPA 1022.1 1021.2 1020.7 1020.6 1021.8 1019.8 1014.0 1017.7 1023.4 1024.7 1024.9 1028.6 1028.6 DAY 21 6 27 4 12 3 30 15 30 31 19 6 MIN. QNH PRESSURE IN HPA 1009.0 1005.0 1005.8 1010.5 1011.3 1005.5 1007.9 1009.1 1015.3 1015.3 1015.0 1016.8 1005.0 DAY 11 12 1 23 4 24 13 6 4 13 28 14 MEAN QFF PRESSURE IN HPA 1021.2 1013.8 1009.5 1008.5 1005.5 997.5 995.9 1000.2 1007.1 1013.8 1017.1 1022.8 1009.4 MAX. QFF PRESSURE IN HPA 1026.9 1019.5 1018.6 1014.0 1013.2 1007.4 1000.5 1004.4 1013.7 1019.1 1026.0 1028.9 1028.9 DAY 6 6 14 4 12 4 30 22 30 27 19 7 MIN. QFF PRESSURE IN HPA 1010.0 1000.2 1000.6 1003.4 999.2 989.2 992.6 996.1 1002.3 1006.8 1010.1 1016.3 989.2 DAY 11 22 24 11 23 20 13 6 4 7 13 27 PRESSURE AT HOUR 2100 UTC. MEAN QFE PRESSURE IN HPA 844.7 841.9 840.8 842.9 842.7 839.3 838.7 840.9 845.2 847.3 846.3 847.9 843.2 MAX. QFE PRESSURE IN HPA 848.2 847.5 846.6 847.2 847.0 846.4 841.4 844.4 849.9 850.4 850.4 854.0 854.0 DAY 21 6 14 4 12 3 22 15 30 16 19 6 MIN. QFE PRESSURE IN HPA 837.2 833.8 834.1 836.6 838.1 834.1 836.4 837.3 842.7 842.2 842.5 842.6 833.8 DAY 10 12 1 23 23 24 13 6 4 13 13 14 MEAN QNH PRESSURE IN HPA 1018.1 1014.8 1013.5 1015.9 1015.7 1011.8 1011.1 1013.6 1018.6 1021.1 1019.9 1021.8 1016.3 MAX. QNH PRESSURE IN HPA 1022.1 1021.3 1020.3 1021.0 1020.7 1020.0 1014.2 1017.7 1024.1 1024.7 1024.7 1028.9 1028.9 DAY 21 6 14 4 12 3 22 15 30 16 19 6 MIN. QNH PRESSURE IN HPA 1009.3 1005.4 1005.7 1008.6 1010.4 1005.7 1008.4 1009.4 1015.7 1015.1 1015.5 1015.6 1005.4 DAY 10 12 1 23 23 24 13 6 4 13 13 14 MEAN QFF PRESSURE IN HPA 1019.8 1012.8 1008.8 1007.9 1004.9 997.9 995.9 999.7 1006.7 1013.2 1016.5 1021.2 1008.8 MAX. QFF PRESSURE IN HPA 1026.3 1018.4 1018.2 1013.7 1012.9 1006.9 999.7 1004.3 1013.8 1018.8 1025.4 1027.2 1027.2 DAY 5 6 14 4 6 3 22 22 30 27 19 6 MIN. QFF PRESSURE IN HPA 1008.3 999.8 1000.1 1001.7 997.3 990.5 992.4 995.2 1002.1 1007.4 1009.2 1014.1 990.5 DAY 10 11 1 23 23 24 13 6 4 13 13 14 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ESFAHAN (40800) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 32 37 N LONGITUDE 51 40 E DATA PROCESSING CENTER ELEVATION 1550.4 M MEANS AND EXTREMES FOR THE YEAR 1953 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AIR TEMPERATURE (C) 4.2 6.9 8.6 15.3 19.7 24.9 28.0 25.8 21.9 15.3 9.0 3.1 15.2 MINIMUN AIR TEMPERATURE (C) -1.5 0.8 2.1 8.2 11.8 14.9 17.8 15.0 10.7 5.9 1.9 -2.0 7.1 DAYS WITH MINIMUM TEMP. >=21 0 0 0 0 0 0 3 0 0 0 0 0 3 DAYS WITH MINIMUM TEMP. <=-4 6 1 1 0 0 0 0 0 0 0 2 10 20 DAYS WITH FREEZING MIN.<= 0 23 12 11 0 0 0 0 0 0 1 9 21 77 TEMPERATURE RECORDS LOWEST(C) -6.0 -4.0 -4.0 4.0 8.0 10.0 14.0 12.0 7.0 0.0 -4.0 -10.0 -10.0 DAY 15 14 26 1 10 1 15 20 28 29 22 24 MAXIMUM AIR TEMPERATURE (C) 11.4 14.2 15.5 23.1 28.1 34.5 37.8 36.0 33.4 25.4 16.8 9.5 23.8 DAYS WITH MAXIMUM TEMP. >=30 0 0 0 0 4 27 31 31 28 9 0 0 130 DAYS WITH MAXIMUM TEMP. <= 0 0 0 0 0 0 0 0 0 0 0 0 0 0 TEMPERATURE RECORDS HIGHEST(C) 16.0 21.0 21.0 28.0 31.0 39.0 40.0 39.0 37.0 32.0 22.0 15.0 40.0 DAY 11 19 11 30 18 23 3 1 10 1 4 1 DIF. BETWEEN (MAX.-MIN.) (C) 12.9 13.4 13.4 14.9 16.3 19.6 20.0 21.0 22.7 19.5 14.9 11.5 16.7 MEAN DAILY TEMP. (MDT) (C) 5.0 7.5 8.8 15.6 20.0 24.7 27.8 25.5 22.0 15.7 9.4 3.8 15.5 COOLING DEG. DAYS(BASE 21 0C) 0.0 0.0 0.0 0.0 3.5 117.5 211.5 138.5 40.5 0.0 0.0 0.0 511.5 HEATING DEG. DAYS(BASE 18 0C) 404.0 294.5 285.0 74.5 0.0 0.5 0.0 0.0 0.0 81.0 258.5 441.0 1839.0 DEWPOINT (MEAN C) -3.1 -0.8 -1.2 5.1 8.3 10.2 12.9 10.4 9.5 7.0 3.6 -1.3 5.0 MIXING RATIO (G/KG) 3.72 4.44 4.38 6.64 8.30 9.60 11.46 9.73 9.04 7.62 6.04 4.29 7.11 VAPOUR PRESSURE (HPA) 5.03 5.96 5.89 8.91 11.09 12.75 15.14 12.93 12.08 10.23 8.13 5.78 9.49 SATURATION DEF. (HPA) 3.55 4.45 5.80 9.29 12.89 21.12 25.07 22.62 16.66 8.91 3.97 2.17 11.37 RELATIVE HUMIDITY (MEAN %) 63 61 53 54 51 44 42 41 49 63 71 75 56 RELATIVE HUMIDITY (MAX. %) 84 83 75 78 74 67 66 67 74 85 89 89 78 RELATIVE HUMIDITY (MIN. %) 38 41 36 34 31 22 24 23 27 39 50 56 35 RELATIVE HUMIDITY (MEAN% 03UTC) 77 77 71 74 70 64 65 65 73 83 86 86 74 RELATIVE HUMIDITY (MEAN% 09UTC) 47 49 40 39 34 26 27 27 30 42 53 62 40 RELATIVE HUMIDITY (MEAN% 15UTC) 54 52 48 43 44 39 37 36 46 58 71 74 50 RH=0 => RELATIVE HUMIDITY < 0.5% AMOUNT OF PRECIPITATION MM. 15.0 31.1 24.5 26.3 9.2 0.0 0.0 0.0 0.5 13.2 14.6 9.5 143.9 DAYS WITH PRECIPITATION >=10 0 2 0 1 0 0 0 0 0 0 1 0 4 DAYS WITH PRECIPITATION >= 5 1 2 3 2 1 0 0 0 0 2 1 1 13 DAYS WITH PRECIPITATION >= 1 3 5 5 5 3 0 0 0 0 3 4 4 32 DAYS WITH PRECIPITATION 4 6 8 9 8 0 1 0 1 6 9 11 63 GREATEST DAILY PRECIPITATION 8.0 16.0 7.2 15.0 6.0 0.0 0.0 0.0 0.5 7.0 10.0 5.0 16.0 DAY 23 24 20 8 23 ** ** ** 25 30 12 14 DAY WITH THUNDER STORM 0 0 0 2 3 0 0 0 0 0 0 0 5 DAYS WITH SNOW OR SLEET 0 0 1 0 0 0 0 0 0 0 0 0 1 DAYS WITH DUST 0 0 0 1 0 0 0 2 0 1 0 0 4 WIND DIRECTION (PREVAILING) 135 180 225 270 270 270 135 135 45 135 135 90 135 PREVAILING WIND SPEED(KNOTS) 3.4 4.5 10.0 8.8 7.3 3.6 5.0 5.0 4.4 4.5 5.2 3.9 4.5 PREVAILING WIND PERCENT 25.5 23.8 24.2 19.6 29.8 29.6 21.0 39.1 23.3 23.8 27.1 19.8 19.1 CALMS PERCENT OF WIND 0.8 0.9 0.4 0.8 0.8 2.5 2.4 2.8 3.8 1.6 1.7 1.6 1.7 NO. OF WIND OBSERVATION 247 223 248 240 248 240 248 248 240 248 240 247 2917 VECTOR WIND DIRECTION (MEAN) 209 214 240 233 260 313 86 97 74 96 143 87 192 VECTOR WIND MAGNITUDE(KNOTS) 1.4 2.5 3.6 2.1 2.4 0.9 1.4 2.8 1.4 1.2 1.5 0.8 0.6 WIND STEADINESES (MEAN %) 29.2 46.3 52.9 31.3 33.3 21.4 31.1 62.2 38.9 25.0 28.3 21.1 11.8 WIND SPEED (MEAN KNOTS) 4.8 5.4 6.8 6.7 7.2 4.2 4.5 4.5 3.6 4.8 5.3 3.8 5.1 FASTEST WIND DIRECTION 330 270 210 210 210 210 90 50 120 330 180 230 210 FASTEST WIND SPEED (KNOTS) 20 20 27 33 30 15 15 20 15 25 20 15 33 DAY 12 7 13 21 7 14 3 4 3 24 18 22 DAYS WITH SKY CLEAR (0-2)/8 12 10 14 9 10 26 24 28 27 22 13 8 203 DAYS WITH P.CLOUDY (3-6)/8 12 9 10 13 19 4 7 3 3 5 8 18 111 DAYS WITH CLOUDY (7-8)/8 7 9 7 8 2 0 0 0 0 4 9 5 51 DAYS WITH VISIBILITY =< 2 KM 0 1 3 0 0 0 3 5 0 0 1 7 20 DURATION OF SUNSHINE HOURS ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ESFAHAN (40800) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 32 37 N LONGITUDE 51 40 E DATA PROCESSING CENTER ELEVATION 1550.4 M MEANS AND EXTREMES FOR THE YEAR 1953 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL MEAN QFE PRESSURE IN HPA 845.1 842.8 841.8 843.4 842.3 839.2 837.8 840.2 843.5 846.7 845.8 844.6 842.8 MAX. QFE PRESSURE IN HPA 854.3 854.0 852.6 850.3 846.3 847.0 844.6 849.3 849.7 853.5 853.3 849.8 854.3 DAY-HOUR 2- 6 15-15 28- 6 1- 6 19-18 5- 6 18- 6 30- 6 21- 6 26- 6 10- 6 2- 6 MIN. QFE PRESSURE IN HPA 835.6 832.7 834.6 836.7 836.7 831.2 831.3 832.8 837.6 841.8 839.8 836.9 831.2 DAY-HOUR 11-12 1- 3 3-12 11-12 8-12 30-15 5-15 1-15 18-15 3-15 19-21 21- 0 MEAN QNH PRESSURE IN HPA 1018.5 1015.9 1014.6 1016.5 1015.3 1011.7 1010.0 1012.8 1016.6 1020.4 1019.3 1018.0 1015.8 MAX. QNH PRESSURE IN HPA 1029.2 1028.9 1027.2 1024.6 1019.9 1020.7 1017.9 1023.4 1023.9 1028.3 1028.1 1024.0 1029.2 DAY-HOUR 2- 6 15-15 28- 6 1- 6 19-18 5- 6 18- 6 30- 6 21- 6 26- 6 10- 6 2- 6 MIN. QNH PRESSURE IN HPA 1007.5 1004.1 1006.3 1008.7 1008.7 1002.3 1002.5 1004.2 1009.8 1014.7 1012.3 1009.0 1002.3 DAY-HOUR 11-12 1- 3 3-12 11-12 8-12 30-15 5-15 1-15 18-15 3-15 19-21 21- 0 MEAN QFF PRESSURE IN HPA 1018.8 1014.2 1011.8 1009.3 1005.1 998.4 994.6 998.9 1005.1 1013.1 1016.2 1018.9 1008.7 MAX. QFF PRESSURE IN HPA 1032.6 1030.0 1025.9 1020.4 1012.3 1010.0 1005.0 1011.3 1013.5 1024.8 1028.1 1028.2 1032.6 DAY-HOUR 2- 6 15-18 28- 3 1- 6 25- 3 1- 3 18- 3 31- 3 21- 3 27- 6 10- 3 23- 6 MIN. QFF PRESSURE IN HPA 1005.0 1002.8 1000.6 1001.1 996.5 986.2 986.3 988.0 996.8 1005.1 1005.3 1007.2 986.2 DAY-HOUR 12- 0 2- 9 13- 0 28-12 8-12 30-12 5-12 1-12 18-12 3-18 19-21 21- 0 PRESSURE AT HOUR 0000 UTC. MEAN QFE PRESSURE IN HPA 845.3 842.7 841.5 843.4 842.5 839.6 837.9 840.2 843.6 846.7 845.7 844.5 842.8 MAX. QFE PRESSURE IN HPA 852.4 852.2 850.5 847.5 845.1 845.6 844.0 847.6 847.9 850.9 851.9 848.2 852.4 DAY 3 16 28 2 18 6 19 31 21 27 10 2 MIN. QFE PRESSURE IN HPA 836.8 836.1 835.2 838.0 838.5 833.3 833.3 834.9 839.8 842.2 840.0 836.9 833.3 DAY 12 2 13 11 8 30 5 1 18 31 20 21 MEAN QNH PRESSURE IN HPA 1018.7 1015.8 1014.3 1016.5 1015.5 1012.1 1010.2 1012.8 1016.8 1020.4 1019.2 1017.9 1015.8 MAX. QNH PRESSURE IN HPA 1027.0 1026.8 1024.8 1021.3 1018.5 1019.1 1017.2 1021.4 1021.8 1025.3 1026.4 1022.1 1027.0 DAY 3 16 28 2 18 6 19 31 21 27 10 2 MIN. QNH PRESSURE IN HPA 1008.9 1008.0 1007.0 1010.3 1010.8 1004.8 1004.8 1006.6 1012.3 1015.1 1012.6 1009.0 1004.8 DAY 12 2 13 11 8 30 5 1 18 31 20 21 MEAN QFF PRESSURE IN HPA 1018.5 1013.4 1011.1 1009.2 1005.2 998.6 994.6 998.5 1004.8 1012.6 1015.6 1018.2 1008.3 MAX. QFF PRESSURE IN HPA 1028.8 1025.4 1023.2 1017.1 1010.2 1008.5 1003.2 1008.3 1010.2 1022.4 1025.3 1025.7 1028.8 DAY 2 16 28 1 25 5 19 31 21 27 10 23 MIN. QFF PRESSURE IN HPA 1005.0 1003.6 1000.6 1003.3 999.1 988.8 988.1 990.2 999.1 1005.8 1006.4 1007.2 988.1 DAY 12 24 13 28 8 30 5 1 18 4 20 21 PRESSURE AT HOUR 0300 UTC. MEAN QFE PRESSURE IN HPA 845.5 842.8 842.2 843.9 843.1 840.3 838.8 841.2 844.4 847.4 846.2 845.0 843.4 MAX. QFE PRESSURE IN HPA 852.9 852.7 851.6 848.5 845.7 846.0 844.5 848.5 848.7 851.6 852.6 848.7 852.9 DAY 2 16 28 1 18 5 20 30 21 26 10 2 MIN. QFE PRESSURE IN HPA 837.5 832.7 836.0 838.5 838.1 833.8 834.3 835.5 840.3 842.7 841.0 837.5 832.7 DAY 12 1 13 11 8 30 6 1 18 31 21 21 MEAN QNH PRESSURE IN HPA 1019.0 1015.8 1015.2 1017.2 1016.2 1012.9 1011.2 1014.0 1017.7 1021.2 1019.7 1018.4 1016.5 MAX. QNH PRESSURE IN HPA 1027.6 1027.4 1026.1 1022.5 1019.2 1019.6 1017.8 1022.5 1022.7 1026.1 1027.2 1022.7 1027.6 DAY 2 16 28 1 18 5 20 30 21 26 10 2 MIN. QNH PRESSURE IN HPA 1009.7 1004.1 1007.9 1010.8 1010.4 1005.4 1005.9 1007.3 1012.9 1015.7 1013.7 1009.7 1004.1 DAY 12 1 13 11 8 30 6 1 18 31 21 21 MEAN QFF PRESSURE IN HPA 1020.3 1015.2 1013.5 1011.2 1007.2 1000.6 997.0 1001.5 1008.0 1015.7 1018.0 1020.1 1010.7 MAX. QFF PRESSURE IN HPA 1031.1 1028.4 1025.9 1020.1 1012.3 1010.0 1005.0 1011.3 1013.5 1023.3 1028.1 1027.4 1031.1 DAY 2 16 28 1 25 1 18 31 21 27 10 23 MIN. QFF PRESSURE IN HPA 1008.3 1002.9 1003.5 1003.8 1000.0 990.6 990.4 992.6 1002.9 1009.6 1009.2 1009.5 990.4 DAY 12 1 13 28 8 30 5 1 18 4 20 21 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ESFAHAN (40800) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 32 37 N LONGITUDE 51 40 E DATA PROCESSING CENTER ELEVATION 1550.4 M MEANS AND EXTREMES FOR THE YEAR 1953 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 0600 UTC. MEAN QFE PRESSURE IN HPA 846.5 844.2 843.1 844.5 843.5 840.5 839.1 841.6 845.1 848.3 847.3 846.0 844.1 MAX. QFE PRESSURE IN HPA 854.3 853.5 852.6 850.3 846.0 847.0 844.6 849.3 849.7 853.5 853.3 849.8 854.3 DAY 2 16 28 1 1 5 18 30 21 26 10 2 MIN. QFE PRESSURE IN HPA 839.2 834.4 836.3 838.9 838.5 833.7 834.5 836.2 840.9 844.1 841.6 838.5 833.7 DAY 12 2 13 11 8 30 1 1 18 31 21 21 MEAN QNH PRESSURE IN HPA 1020.1 1017.5 1016.2 1017.8 1016.6 1013.2 1011.5 1014.4 1018.5 1022.2 1021.0 1019.6 1017.4 MAX. QNH PRESSURE IN HPA 1029.2 1028.3 1027.2 1024.6 1019.6 1020.7 1017.9 1023.4 1023.9 1028.3 1028.1 1024.0 1029.2 DAY 2 16 28 1 1 5 18 30 21 26 10 2 MIN. QNH PRESSURE IN HPA 1011.6 1006.1 1008.3 1011.3 1010.8 1005.2 1006.2 1008.2 1013.6 1017.3 1014.4 1010.8 1005.2 DAY 12 2 13 11 8 30 1 1 18 31 21 21 MEAN QFF PRESSURE IN HPA 1021.2 1016.3 1013.5 1010.6 1006.2 999.8 996.0 1000.3 1007.0 1014.9 1018.3 1021.2 1010.4 MAX. QFF PRESSURE IN HPA 1032.6 1030.0 1025.9 1020.4 1011.1 1009.6 1003.7 1009.9 1013.0 1024.8 1026.8 1028.2 1032.6 DAY 2 15 28 1 25 5 18 31 21 27 10 23 MIN. QFF PRESSURE IN HPA 1010.5 1003.6 1002.5 1001.4 999.8 989.7 990.0 992.0 1001.6 1008.3 1009.4 1010.2 989.7 DAY 24 2 13 28 8 30 6 1 18 4 20 21 PRESSURE AT HOUR 0900 UTC. MEAN QFE PRESSURE IN HPA 845.1 843.0 842.2 843.4 842.4 839.5 838.1 840.4 843.8 846.8 845.5 844.6 842.9 MAX. QFE PRESSURE IN HPA 852.9 852.3 851.5 849.0 844.9 846.1 843.6 848.2 847.9 852.5 851.7 847.8 852.9 DAY 2 15 28 1 1 5 18 30 21 26 10 7 MIN. QFE PRESSURE IN HPA 836.9 834.0 835.8 837.4 837.8 832.8 833.3 835.2 839.6 842.5 840.2 837.6 832.8 DAY 11 2 4 11 8 30 5 1 18 24 21 21 MEAN QNH PRESSURE IN HPA 1018.6 1016.1 1015.1 1016.5 1015.3 1012.0 1010.3 1013.1 1017.0 1020.5 1019.0 1017.9 1015.9 MAX. QNH PRESSURE IN HPA 1027.6 1026.9 1026.0 1023.0 1018.3 1019.7 1016.8 1022.1 1021.8 1027.1 1026.2 1021.6 1027.6 DAY 2 15 28 1 1 5 18 30 21 26 10 7 MIN. QNH PRESSURE IN HPA 1009.0 1005.6 1007.7 1009.6 1010.0 1004.2 1004.8 1007.0 1012.1 1015.5 1012.8 1009.8 1004.2 DAY 11 2 4 11 8 30 5 1 18 24 21 21 MEAN QFF PRESSURE IN HPA 1018.1 1013.7 1011.6 1008.4 1004.5 998.4 994.3 998.3 1004.2 1012.2 1014.8 1018.0 1008.0 MAX. QFF PRESSURE IN HPA 1028.3 1026.1 1023.5 1017.5 1008.7 1007.2 1003.0 1007.9 1009.9 1023.3 1023.6 1024.5 1028.3 DAY 2 15 28 1 25 1 18 30 21 26 10 23 MIN. QFF PRESSURE IN HPA 1006.7 1002.8 1002.0 1001.3 998.8 988.1 987.6 990.2 998.9 1007.0 1006.7 1009.7 987.6 DAY 11 2 13 28 8 30 5 3 18 24 20 21 PRESSURE AT HOUR 1200 UTC. MEAN QFE PRESSURE IN HPA 844.1 841.7 840.8 842.2 840.8 838.1 836.6 839.0 842.2 845.5 844.9 843.7 841.6 MAX. QFE PRESSURE IN HPA 851.8 850.7 849.2 847.0 843.9 844.7 842.7 846.4 846.3 851.7 850.4 846.8 851.8 DAY 2 15 28 1 17 5 18 30 1 26 9 1 MIN. QFE PRESSURE IN HPA 835.6 834.5 834.6 836.7 836.7 831.3 832.1 833.0 837.8 842.3 840.1 837.4 831.3 DAY 11 2 3 11 8 30 4 1 18 24 20 21 MEAN QNH PRESSURE IN HPA 1017.3 1014.6 1013.5 1015.1 1013.5 1010.4 1008.7 1011.4 1015.2 1018.9 1018.2 1016.8 1014.5 MAX. QNH PRESSURE IN HPA 1026.3 1025.0 1023.3 1020.7 1017.1 1018.0 1015.7 1020.0 1019.9 1026.2 1024.7 1020.5 1026.3 DAY 2 15 28 1 17 5 18 30 1 26 9 1 MIN. QNH PRESSURE IN HPA 1007.5 1006.2 1006.3 1008.7 1008.7 1002.5 1003.4 1004.4 1010.0 1015.3 1012.7 1009.6 1002.5 DAY 11 2 3 11 8 30 4 1 18 24 20 21 MEAN QFF PRESSURE IN HPA 1016.9 1012.0 1010.2 1007.6 1003.1 996.7 992.8 997.0 1003.0 1011.0 1014.4 1017.1 1006.8 MAX. QFF PRESSURE IN HPA 1027.5 1023.6 1020.4 1015.4 1007.1 1005.6 1001.8 1006.4 1009.0 1023.0 1022.9 1024.3 1027.5 DAY 2 15 28 1 25 5 18 30 30 26 9 23 MIN. QFF PRESSURE IN HPA 1005.2 1004.3 1001.0 1001.1 996.5 986.2 986.3 988.0 996.8 1006.1 1006.5 1007.4 986.2 DAY 11 2 3 28 8 30 5 1 18 3 19 20 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ESFAHAN (40800) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 32 37 N LONGITUDE 51 40 E DATA PROCESSING CENTER ELEVATION 1550.4 M MEANS AND EXTREMES FOR THE YEAR 1953 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 1500 UTC. MEAN QFE PRESSURE IN HPA 844.4 842.2 841.0 842.5 841.2 837.8 836.1 838.6 841.9 845.6 845.3 844.2 841.7 MAX. QFE PRESSURE IN HPA 852.3 854.0 848.6 847.4 844.6 844.2 842.3 846.1 846.0 852.1 850.8 847.5 854.0 DAY 2 15 28 1 19 5 18 30 21 26 9 11 MIN. QFE PRESSURE IN HPA 836.6 836.5 835.4 837.7 837.2 831.2 831.3 832.8 837.6 841.8 839.9 838.2 831.2 DAY 11 2 3 10 8 30 5 1 18 3 19 20 MEAN QNH PRESSURE IN HPA 1017.7 1015.2 1013.7 1015.5 1014.0 1010.0 1008.1 1010.9 1014.8 1019.1 1018.8 1017.5 1014.6 MAX. QNH PRESSURE IN HPA 1026.9 1028.9 1022.6 1021.2 1017.9 1017.5 1015.3 1019.7 1019.6 1026.7 1025.1 1021.3 1028.9 DAY 2 15 28 1 19 5 18 30 21 26 9 11 MIN. QNH PRESSURE IN HPA 1008.6 1008.5 1007.2 1009.9 1009.3 1002.3 1002.5 1004.2 1009.8 1014.7 1012.5 1010.5 1002.3 DAY 11 2 3 10 8 30 5 1 18 3 19 20 MEAN QFF PRESSURE IN HPA 1018.9 1014.4 1012.0 1009.3 1005.0 997.3 993.6 998.2 1004.7 1013.3 1016.8 1019.2 1008.5 MAX. QFF PRESSURE IN HPA 1029.9 1030.0 1021.5 1016.9 1010.4 1007.7 1002.3 1008.2 1011.4 1024.1 1025.7 1025.6 1030.0 DAY 2 15 28 1 24 4 18 30 30 26 9 24 MIN. QFF PRESSURE IN HPA 1008.0 1006.6 1004.5 1004.3 999.0 987.4 986.7 988.8 999.2 1006.9 1007.3 1009.3 986.7 DAY 11 2 3 28 8 30 5 3 18 3 19 20 PRESSURE AT HOUR 1800 UTC. MEAN QFE PRESSURE IN HPA 844.9 843.1 841.6 843.7 842.6 838.9 837.7 840.1 843.4 846.7 846.0 844.8 842.8 MAX. QFE PRESSURE IN HPA 852.5 853.3 849.5 849.1 846.3 845.7 844.3 847.7 847.8 852.1 852.0 848.2 853.3 DAY 2 15 27 1 19 4 18 30 21 26 9 1 MIN. QFE PRESSURE IN HPA 837.0 838.3 836.4 838.5 839.2 832.1 832.9 834.9 839.8 842.7 840.2 837.4 832.1 DAY 11 20 3 10 8 30 4 3 9 30 19 20 MEAN QNH PRESSURE IN HPA 1018.3 1016.2 1014.5 1016.8 1015.6 1011.3 1009.9 1012.7 1016.5 1020.4 1019.5 1018.1 1015.8 MAX. QNH PRESSURE IN HPA 1027.1 1028.1 1023.6 1023.2 1019.9 1019.2 1017.6 1021.5 1021.6 1026.7 1026.5 1022.1 1028.1 DAY 2 15 27 1 19 4 18 30 21 26 9 1 MIN. QNH PRESSURE IN HPA 1009.1 1010.6 1008.4 1010.8 1011.6 1003.4 1004.3 1006.6 1012.3 1015.7 1012.8 1009.6 1003.4 DAY 11 20 3 10 8 30 4 3 9 30 19 20 MEAN QFF PRESSURE IN HPA 1019.2 1014.9 1011.7 1009.6 1005.3 997.8 994.5 998.7 1005.1 1013.1 1016.7 1019.8 1008.9 MAX. QFF PRESSURE IN HPA 1030.4 1030.0 1022.7 1017.9 1010.9 1007.4 1003.6 1009.3 1012.1 1023.9 1025.3 1026.3 1030.4 DAY 2 15 27 1 24 4 18 30 30 26 9 23 MIN. QFF PRESSURE IN HPA 1008.8 1007.6 1003.1 1004.7 999.6 987.2 988.1 990.2 1000.1 1005.1 1007.0 1008.1 987.2 DAY 11 11 12 20 12 27 4 3 18 3 19 20 PRESSURE AT HOUR 2100 UTC. MEAN QFE PRESSURE IN HPA 844.9 843.0 841.9 843.6 842.7 839.3 838.0 840.5 843.6 846.7 845.8 844.5 842.9 MAX. QFE PRESSURE IN HPA 852.8 852.8 850.7 849.3 845.7 845.7 844.4 847.8 847.9 851.5 852.1 847.8 852.8 DAY 2 15 27 1 24 5 18 30 20 26 9 1 MIN. QFE PRESSURE IN HPA 837.0 837.7 835.9 838.7 838.8 833.0 833.2 835.1 840.0 842.6 839.8 837.3 833.0 DAY 11 23 3 10 8 30 4 3 18 30 19 20 MEAN QNH PRESSURE IN HPA 1018.3 1016.1 1014.8 1016.7 1015.7 1011.7 1010.3 1013.1 1016.7 1020.4 1019.3 1017.8 1015.9 MAX. QNH PRESSURE IN HPA 1027.5 1027.5 1025.0 1023.4 1019.2 1019.2 1017.7 1021.6 1021.8 1026.0 1026.7 1021.6 1027.5 DAY 2 15 27 1 24 5 18 30 20 26 9 1 MIN. QNH PRESSURE IN HPA 1009.1 1009.9 1007.8 1011.1 1011.2 1004.4 1004.7 1006.9 1012.6 1015.6 1012.3 1009.4 1004.4 DAY 11 23 3 10 8 30 4 3 18 30 19 20 MEAN QFF PRESSURE IN HPA 1017.7 1013.7 1011.3 1008.7 1004.9 997.9 994.4 998.5 1004.2 1012.2 1015.3 1018.0 1008.1 MAX. QFF PRESSURE IN HPA 1028.4 1026.0 1023.3 1016.8 1009.5 1006.2 1003.3 1008.4 1010.8 1022.9 1024.5 1025.0 1028.4 DAY 2 15 27 1 24 4 18 30 30 26 9 23 MIN. QFF PRESSURE IN HPA 1006.4 1006.3 1001.2 1003.9 1000.4 988.6 987.5 989.5 999.2 1005.9 1005.3 1007.7 987.5 DAY 11 23 12 20 8 30 5 3 17 3 19 20 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ESFAHAN (40800) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 32 37 N LONGITUDE 51 40 E DATA PROCESSING CENTER ELEVATION 1550.4 M MEANS AND EXTREMES FOR THE YEAR 1954 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AIR TEMPERATURE (C) 4.6 6.2 9.9 15.4 21.0 25.7 27.2 24.6 20.8 15.4 8.5 3.7 15.3 MINIMUN AIR TEMPERATURE (C) -2.3 -1.1 2.9 7.6 11.5 16.1 18.3 14.4 10.8 6.6 3.8 -0.8 7.3 DAYS WITH MINIMUM TEMP. >=21 0 0 0 0 0 0 1 0 0 0 0 0 1 DAYS WITH MINIMUM TEMP. <=-4 10 3 3 0 0 0 0 0 0 0 0 3 19 DAYS WITH FREEZING MIN.<= 0 26 22 5 0 0 0 0 0 0 0 0 19 72 TEMPERATURE RECORDS LOWEST(C) -7.0 -6.0 -5.0 2.0 7.0 14.0 16.0 11.0 7.0 3.0 1.0 -4.0 -7.0 DAY 7 3 3 7 19 8 5 21 26 25 4 10 MAXIMUM AIR TEMPERATURE (C) 12.0 13.5 17.0 23.3 30.0 34.7 36.1 34.7 31.4 25.8 14.1 9.3 23.5 DAYS WITH MAXIMUM TEMP. >=30 0 0 0 0 13 30 31 31 23 3 0 0 131 DAYS WITH MAXIMUM TEMP. <= 0 0 0 0 0 0 0 0 0 0 0 0 0 0 TEMPERATURE RECORDS HIGHEST(C) 17.0 22.0 25.0 29.0 36.0 37.0 41.0 37.0 35.0 31.0 23.0 16.0 41.0 DAY 11 20 31 25 30 1 23 9 1 8 1 24 DIF. BETWEEN (MAX.-MIN.) (C) 14.3 14.6 14.1 15.7 18.5 18.6 17.8 20.3 20.6 19.2 10.3 10.1 16.2 MEAN DAILY TEMP. (MDT) (C) 4.9 6.2 10.0 15.4 20.8 25.4 27.2 24.5 21.1 16.2 8.9 4.3 15.4 COOLING DEG. DAYS(BASE 21 0C) 0.0 0.0 0.0 0.0 30.5 131.0 191.0 110.0 25.5 0.0 0.0 0.0 488.0 HEATING DEG. DAYS(BASE 18 0C) 394.0 330.0 249.5 89.0 1.5 0.0 0.0 0.0 0.5 60.0 272.0 425.5 1822.0 DEWPOINT (MEAN C) -3.5 -2.5 1.4 4.4 9.4 12.5 13.2 11.8 8.5 6.0 4.3 -0.3 5.4 MIXING RATIO (G/KG) 3.63 3.91 5.25 6.49 9.05 11.39 11.73 10.68 8.48 7.06 6.22 4.51 7.37 VAPOUR PRESSURE (HPA) 4.87 5.24 7.03 8.66 12.04 15.02 15.45 14.15 11.30 9.48 8.36 6.08 9.81 SATURATION DEF. (HPA) 4.03 4.71 5.89 10.04 14.51 19.86 22.51 18.90 15.27 9.38 3.30 2.10 10.88 RELATIVE HUMIDITY (MEAN %) 59 57 59 51 51 47 45 48 49 58 77 77 57 RELATIVE HUMIDITY (MAX. %) 79 79 82 73 73 69 67 73 75 81 89 90 78 RELATIVE HUMIDITY (MIN. %) 37 36 37 31 30 31 27 28 27 32 61 59 36 RELATIVE HUMIDITY (MEAN% 03UTC) 76 78 77 70 71 68 66 73 74 78 87 87 75 RELATIVE HUMIDITY (MEAN% 09UTC) 44 43 46 37 33 35 31 31 29 34 64 60 41 RELATIVE HUMIDITY (MEAN% 15UTC) 50 47 51 41 45 43 38 41 45 59 78 77 51 RH=0 => RELATIVE HUMIDITY < 0.5% AMOUNT OF PRECIPITATION MM. 7.0 16.0 77.3 14.0 2.2 0.0 1.0 3.0 0.0 7.0 148.2 63.0 338.7 DAYS WITH PRECIPITATION >=10 0 1 3 0 0 0 0 0 0 0 6 2 12 DAYS WITH PRECIPITATION >= 5 1 1 5 2 0 0 0 0 0 0 7 5 21 DAYS WITH PRECIPITATION >= 1 1 2 8 3 1 0 1 2 0 2 12 7 39 DAYS WITH PRECIPITATION 1 2 11 5 4 1 3 4 0 2 17 8 58 GREATEST DAILY PRECIPITATION 7.0 13.0 27.0 7.0 2.0 0.0 1.0 2.0 0.0 4.0 39.0 32.0 39.0 DAY 2 8 14 3 3 ** 31 1 ** 27 26 6 DAY WITH THUNDER STORM 0 0 1 0 1 0 2 0 0 1 0 1 6 DAYS WITH SNOW OR SLEET 0 1 0 0 0 0 0 0 0 0 1 4 6 DAYS WITH DUST 0 0 0 3 0 1 3 0 1 0 2 0 10 WIND DIRECTION (PREVAILING) 270 270 270 225 270 90 90 90 90 90 270 270 270 PREVAILING WIND SPEED(KNOTS) 7.2 8.2 7.4 10.6 5.8 7.5 5.5 3.9 4.2 4.2 4.3 4.4 5.5 PREVAILING WIND PERCENT 22.2 19.6 20.2 28.3 36.3 28.8 31.0 33.5 25.8 23.4 18.3 35.5 22.1 CALMS PERCENT OF WIND 1.6 0.0 0.4 0.0 0.0 0.0 0.8 1.2 5.4 11.3 22.5 21.4 5.4 NO. OF WIND OBSERVATION 248 224 247 240 248 240 248 248 240 248 240 248 2919 VECTOR WIND DIRECTION (MEAN) 227 214 196 227 267 91 65 84 87 98 270 265 179 VECTOR WIND MAGNITUDE(KNOTS) 1.8 2.6 1.6 3.9 1.7 2.4 2.4 2.0 1.6 0.8 0.2 0.9 0.5 WIND STEADINESES (MEAN %) 28.6 37.7 24.6 53.4 28.8 38.7 41.4 45.5 33.3 21.1 5.4 28.1 9.3 WIND SPEED (MEAN KNOTS) 6.3 6.9 6.5 7.3 5.9 6.2 5.8 4.4 4.8 3.8 3.7 3.2 5.4 FASTEST WIND DIRECTION 210 180 180 180 90 120 360 50 120 150 30 230 180 FASTEST WIND SPEED (KNOTS) 30 20 25 33 20 27 30 25 20 20 26 27 33 DAY 11 4 18 11 2 22 31 18 10 15 12 31 DAYS WITH SKY CLEAR (0-2)/8 17 6 7 6 22 27 21 25 28 24 8 11 202 DAYS WITH P.CLOUDY (3-6)/8 11 19 10 15 7 3 10 6 2 6 8 10 107 DAYS WITH CLOUDY (7-8)/8 3 3 14 9 2 0 0 0 0 1 14 10 56 DAYS WITH VISIBILITY =< 2 KM 1 0 5 2 0 0 3 1 0 1 9 4 26 DURATION OF SUNSHINE HOURS ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ESFAHAN (40800) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 32 37 N LONGITUDE 51 40 E DATA PROCESSING CENTER ELEVATION 1550.4 M MEANS AND EXTREMES FOR THE YEAR 1954 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL MEAN QFE PRESSURE IN HPA 840.1 839.3 842.0 839.5 840.0 836.4 835.9 838.8 840.3 844.4 844.8 844.9 840.5 MAX. QFE PRESSURE IN HPA 852.4 849.0 850.2 846.0 845.0 841.7 840.6 844.8 846.6 852.7 850.9 855.5 855.5 DAY-HOUR 2- 3 22- 6 3- 6 25- 3 1- 6 22- 6 31- 6 31- 6 22-21 1- 9 5- 6 16- 6 MIN. QFE PRESSURE IN HPA 833.3 829.4 833.7 831.4 832.9 831.7 830.8 832.1 834.6 839.1 841.3 836.9 829.4 DAY-HOUR 3-12 8-12 25- 0 11-12 27-15 9-15 10-15 11-15 17-12 3-15 22-12 7- 3 MEAN QNH PRESSURE IN HPA 1012.7 1011.7 1014.9 1012.0 1012.5 1008.4 1007.8 1011.2 1012.9 1017.7 1018.2 1018.3 1013.2 MAX. QNH PRESSURE IN HPA 1027.0 1023.0 1024.4 1019.6 1018.4 1014.6 1013.3 1018.2 1020.3 1027.4 1025.3 1030.6 1030.6 DAY-HOUR 2- 3 22- 6 3- 6 25- 3 1- 6 22- 6 31- 6 31- 6 22-21 1- 9 5- 6 16- 6 MIN. QNH PRESSURE IN HPA 1004.8 1000.2 1005.2 1002.6 1004.3 1002.9 1001.9 1003.4 1006.3 1011.5 1014.1 1009.0 1000.2 DAY-HOUR 3-12 8-12 25- 0 11-12 27-15 9-15 10-15 11-15 17-12 3-15 22-12 7- 3 MEAN QFF PRESSURE IN HPA 1012.5 1010.4 1011.2 1004.6 1001.5 994.3 992.7 997.8 1002.1 1010.3 1015.3 1018.8 1006.0 MAX. QFF PRESSURE IN HPA 1025.3 1021.7 1026.2 1010.5 1008.0 1003.0 1000.6 1006.4 1011.0 1018.7 1021.3 1033.4 1033.4 DAY-HOUR 2- 3 3- 6 3- 6 25- 3 1- 3 22- 3 31- 3 31- 3 23- 3 12- 3 29-15 16- 6 MIN. QFF PRESSURE IN HPA 1002.1 997.4 997.5 995.0 991.4 988.2 985.7 989.3 994.1 1002.5 1008.9 1006.1 985.7 DAY-HOUR 3-12 8-12 25- 0 11-12 27-12 9-12 27-12 10-12 11-12 3-12 1- 9 30-21 PRESSURE AT HOUR 0000 UTC. MEAN QFE PRESSURE IN HPA 840.3 839.3 841.8 839.6 840.2 836.8 835.9 839.0 840.5 844.4 844.8 844.9 840.6 MAX. QFE PRESSURE IN HPA 845.4 846.7 848.4 845.5 843.9 840.2 839.7 843.3 844.6 849.5 848.6 854.2 854.2 DAY 1 22 3 25 1 22 31 31 23 12 5 16 MIN. QFE PRESSURE IN HPA 835.6 830.4 833.7 835.2 835.2 833.1 832.6 834.3 836.0 840.2 841.6 837.1 830.4 DAY 28 16 25 7 28 10 28 11 17 3 28 7 MEAN QNH PRESSURE IN HPA 1012.9 1011.7 1014.6 1012.1 1012.8 1008.8 1007.8 1011.4 1013.1 1017.8 1018.1 1018.2 1013.3 MAX. QNH PRESSURE IN HPA 1018.9 1020.4 1022.3 1019.0 1017.1 1012.8 1012.2 1016.4 1017.9 1023.6 1022.6 1029.1 1029.1 DAY 1 22 3 25 1 22 31 31 23 12 5 16 MIN. QNH PRESSURE IN HPA 1007.5 1001.4 1005.2 1007.0 1007.0 1004.5 1004.0 1005.9 1007.9 1012.8 1014.4 1009.2 1001.4 DAY 28 16 25 7 28 10 28 11 17 3 28 7 MEAN QFF PRESSURE IN HPA 1011.9 1009.8 1010.4 1004.4 1001.8 994.5 992.5 997.8 1001.7 1010.1 1014.7 1018.3 1005.7 MAX. QFF PRESSURE IN HPA 1018.4 1017.4 1023.2 1008.6 1006.8 999.9 999.4 1003.6 1008.4 1015.4 1019.0 1030.5 1030.5 DAY 18 3 3 25 4 21 31 31 23 12 15 16 MIN. QFF PRESSURE IN HPA 1004.6 1002.1 997.5 999.2 993.4 990.0 987.1 991.7 996.4 1003.8 1010.2 1006.4 987.1 DAY 12 16 25 3 28 10 28 11 17 3 1 31 PRESSURE AT HOUR 0300 UTC. MEAN QFE PRESSURE IN HPA 840.9 839.8 842.6 840.2 840.9 837.5 836.8 839.8 841.3 845.0 845.2 845.0 841.2 MAX. QFE PRESSURE IN HPA 852.4 847.6 849.0 846.0 844.5 841.4 840.3 844.0 845.3 850.0 849.4 854.7 854.7 DAY 2 22 3 25 1 22 31 31 23 12 5 16 MIN. QFE PRESSURE IN HPA 835.4 830.4 834.3 835.6 835.7 834.0 833.4 834.9 836.8 840.9 841.9 836.9 830.4 DAY 3 16 25 11 27 10 28 11 17 3 28 7 MEAN QNH PRESSURE IN HPA 1013.6 1012.4 1015.6 1012.8 1013.6 1009.7 1008.8 1012.3 1014.1 1018.4 1018.6 1018.4 1014.0 MAX. QNH PRESSURE IN HPA 1027.0 1021.4 1023.0 1019.6 1017.8 1014.2 1012.9 1017.2 1018.7 1024.2 1023.5 1029.7 1029.7 DAY 2 22 3 25 1 22 31 31 23 12 5 16 MIN. QNH PRESSURE IN HPA 1007.2 1001.4 1005.9 1007.5 1007.6 1005.6 1004.9 1006.6 1008.9 1013.6 1014.8 1009.0 1001.4 DAY 3 16 25 11 27 10 28 11 17 3 28 7 MEAN QFF PRESSURE IN HPA 1014.4 1012.1 1012.9 1006.5 1003.7 996.7 994.9 1000.4 1004.8 1012.9 1016.5 1019.5 1007.9 MAX. QFF PRESSURE IN HPA 1025.3 1020.6 1025.9 1010.5 1008.0 1003.0 1000.6 1006.4 1011.0 1018.7 1021.0 1032.7 1032.7 DAY 2 3 3 25 1 22 31 31 23 12 5 16 MIN. QFF PRESSURE IN HPA 1006.6 1002.5 1000.1 1000.7 995.2 992.6 989.4 993.9 999.6 1006.3 1012.7 1007.9 989.4 DAY 3 16 25 11 27 10 28 11 17 3 2 31 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ESFAHAN (40800) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 32 37 N LONGITUDE 51 40 E DATA PROCESSING CENTER ELEVATION 1550.4 M MEANS AND EXTREMES FOR THE YEAR 1954 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 0600 UTC. MEAN QFE PRESSURE IN HPA 841.5 840.7 843.2 840.8 841.4 837.8 837.1 840.2 841.9 845.8 846.0 845.9 841.9 MAX. QFE PRESSURE IN HPA 845.4 849.0 850.2 845.8 845.0 841.7 840.6 844.8 846.2 851.1 850.9 855.5 855.5 DAY 1 22 3 27 1 22 31 31 23 12 5 16 MIN. QFE PRESSURE IN HPA 836.8 832.6 835.7 835.3 836.1 834.4 834.1 835.5 837.7 841.8 843.0 838.0 832.6 DAY 28 16 25 11 27 10 10 11 17 3 22 7 MEAN QNH PRESSURE IN HPA 1014.4 1013.4 1016.3 1013.5 1014.2 1010.0 1009.2 1012.8 1014.8 1019.4 1019.6 1019.4 1014.8 MAX. QNH PRESSURE IN HPA 1018.9 1023.0 1024.4 1019.3 1018.4 1014.6 1013.3 1018.2 1019.8 1025.5 1025.3 1030.6 1030.6 DAY 1 22 3 27 1 22 31 31 23 12 5 16 MIN. QNH PRESSURE IN HPA 1008.9 1004.0 1007.6 1007.1 1008.0 1006.1 1005.7 1007.3 1009.9 1014.7 1016.1 1010.3 1004.0 DAY 28 16 25 11 27 10 10 11 17 3 22 7 MEAN QFF PRESSURE IN HPA 1015.1 1012.7 1013.0 1006.1 1003.0 995.9 994.2 999.4 1004.0 1012.0 1017.0 1020.7 1007.8 MAX. QFF PRESSURE IN HPA 1021.7 1021.7 1026.2 1009.3 1007.4 1001.7 999.4 1005.3 1010.3 1018.5 1021.3 1033.4 1033.4 DAY 18 3 3 27 4 22 31 31 23 12 29 16 MIN. QFF PRESSURE IN HPA 1007.5 1002.7 1001.8 1000.2 994.7 991.6 989.3 993.0 998.3 1005.5 1012.7 1009.6 989.3 DAY 28 8 25 11 27 10 10 11 17 3 2 7 PRESSURE AT HOUR 0900 UTC. MEAN QFE PRESSURE IN HPA 840.0 839.4 842.6 839.6 840.3 836.8 836.2 839.1 840.7 844.7 844.9 844.8 840.8 MAX. QFE PRESSURE IN HPA 844.1 848.1 848.7 844.8 844.0 840.6 839.5 843.6 844.8 852.7 849.0 853.9 853.9 DAY 16 22 3 27 1 22 31 31 23 1 5 16 MIN. QFE PRESSURE IN HPA 834.4 831.0 834.8 832.3 835.1 833.6 833.3 834.2 836.4 840.7 842.0 837.8 831.0 DAY 3 8 25 11 27 10 10 11 17 3 22 31 MEAN QNH PRESSURE IN HPA 1012.6 1011.9 1015.6 1012.1 1013.0 1008.8 1008.2 1011.6 1013.4 1018.1 1018.3 1018.2 1013.5 MAX. QNH PRESSURE IN HPA 1017.3 1022.0 1022.7 1018.2 1017.2 1013.3 1012.0 1016.8 1018.2 1027.4 1023.0 1028.7 1028.7 DAY 16 22 3 27 1 22 31 31 23 1 5 16 MIN. QNH PRESSURE IN HPA 1006.1 1002.1 1006.5 1003.6 1006.9 1005.1 1004.8 1005.8 1008.4 1013.4 1014.9 1010.0 1002.1 DAY 3 8 25 11 27 10 10 11 17 3 22 31 MEAN QFF PRESSURE IN HPA 1011.5 1009.7 1011.6 1004.0 1001.3 993.9 992.5 997.4 1001.4 1009.4 1014.6 1018.1 1005.5 MAX. QFF PRESSURE IN HPA 1018.0 1019.4 1023.1 1006.8 1006.1 999.7 997.3 1002.9 1008.2 1018.0 1020.0 1029.7 1029.7 DAY 8 3 3 23 9 21 13 31 23 1 29 16 MIN. QFF PRESSURE IN HPA 1002.8 997.7 999.8 995.7 993.3 990.0 987.8 991.3 994.8 1003.3 1008.9 1007.7 987.8 DAY 3 8 25 11 27 10 10 11 11 3 1 31 PRESSURE AT HOUR 1200 UTC. MEAN QFE PRESSURE IN HPA 838.8 838.0 840.8 838.2 838.7 835.2 834.9 837.8 839.0 843.2 843.9 844.2 839.4 MAX. QFE PRESSURE IN HPA 843.2 846.0 846.9 843.6 841.9 839.1 837.8 841.5 843.3 847.5 848.0 852.3 852.3 DAY 16 22 2 24 24 21 15 30 23 12 5 16 MIN. QFE PRESSURE IN HPA 833.3 829.4 834.1 831.4 833.5 832.3 831.7 832.8 834.6 839.4 841.3 837.6 829.4 DAY 3 8 25 11 27 9 10 10 17 3 22 30 MEAN QNH PRESSURE IN HPA 1011.2 1010.3 1013.6 1010.4 1011.1 1007.0 1006.6 1010.0 1011.4 1016.3 1017.1 1017.4 1011.9 MAX. QNH PRESSURE IN HPA 1016.3 1019.6 1020.6 1016.8 1014.8 1011.5 1010.0 1014.3 1016.4 1021.3 1021.9 1026.9 1026.9 DAY 16 22 2 24 24 21 15 30 23 12 5 16 MIN. QNH PRESSURE IN HPA 1004.8 1000.2 1005.7 1002.6 1005.0 1003.6 1002.9 1004.2 1006.3 1011.9 1014.1 1009.8 1000.2 DAY 3 8 25 11 27 9 10 10 17 3 22 30 MEAN QFF PRESSURE IN HPA 1010.1 1008.3 1009.1 1002.7 999.9 992.3 991.1 996.1 999.9 1008.5 1013.8 1017.3 1004.1 MAX. QFF PRESSURE IN HPA 1015.7 1017.1 1020.7 1006.9 1003.9 998.5 996.4 1001.4 1006.6 1013.7 1020.3 1028.1 1028.1 DAY 7 3 2 27 9 21 30 26 23 12 29 16 MIN. QFF PRESSURE IN HPA 1002.1 997.4 998.7 995.0 991.4 988.2 985.7 989.3 994.1 1002.5 1009.1 1008.6 985.7 DAY 3 8 25 11 27 9 27 10 11 3 2 30 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ESFAHAN (40800) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 32 37 N LONGITUDE 51 40 E DATA PROCESSING CENTER ELEVATION 1550.4 M MEANS AND EXTREMES FOR THE YEAR 1954 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 1500 UTC. MEAN QFE PRESSURE IN HPA 839.3 838.3 841.0 838.4 838.4 834.7 834.4 837.2 838.7 843.3 844.4 844.7 839.4 MAX. QFE PRESSURE IN HPA 843.6 846.0 846.7 844.1 841.6 839.3 838.4 841.2 842.9 847.5 848.1 852.4 852.4 DAY 16 22 2 24 24 21 30 30 23 12 5 16 MIN. QFE PRESSURE IN HPA 834.2 829.6 834.8 832.9 832.9 831.7 830.8 832.1 834.8 839.1 841.7 838.0 829.6 DAY 27 8 24 11 27 9 10 11 16 3 22 30 MEAN QNH PRESSURE IN HPA 1011.8 1010.6 1013.7 1010.7 1010.8 1006.4 1006.1 1009.3 1011.1 1016.4 1017.7 1018.0 1011.9 MAX. QNH PRESSURE IN HPA 1016.8 1019.6 1020.4 1017.3 1014.4 1011.8 1010.7 1014.0 1015.9 1021.3 1022.0 1027.0 1027.0 DAY 16 22 2 24 24 21 30 30 23 12 5 16 MIN. QNH PRESSURE IN HPA 1005.8 1000.5 1006.5 1004.3 1004.3 1002.9 1001.9 1003.4 1006.5 1011.5 1014.6 1010.3 1000.5 DAY 27 8 24 11 27 9 10 11 16 3 22 30 MEAN QFF PRESSURE IN HPA 1012.4 1010.3 1010.8 1004.2 1000.5 993.0 992.0 996.9 1001.5 1010.5 1015.6 1019.0 1005.6 MAX. QFF PRESSURE IN HPA 1018.1 1019.0 1022.2 1008.1 1006.6 1000.3 998.3 1002.6 1007.6 1015.6 1021.3 1029.4 1029.4 DAY 7 3 2 24 3 21 30 30 23 12 29 16 MIN. QFF PRESSURE IN HPA 1005.4 999.8 1000.2 998.9 991.6 988.8 986.2 989.9 995.5 1003.8 1010.8 1009.9 986.2 DAY 28 8 24 11 27 16 27 11 11 3 1 30 PRESSURE AT HOUR 1800 UTC. MEAN QFE PRESSURE IN HPA 840.0 839.2 841.9 839.7 839.9 836.0 835.7 838.6 840.1 844.3 844.9 845.1 840.5 MAX. QFE PRESSURE IN HPA 844.2 846.5 848.1 845.9 844.3 840.1 840.5 842.9 844.4 849.2 848.5 853.6 853.6 DAY 16 22 2 24 1 21 31 30 22 11 5 15 MIN. QFE PRESSURE IN HPA 835.0 829.9 835.3 834.7 834.7 832.3 832.4 833.6 835.4 839.8 842.2 837.0 829.9 DAY 27 15 24 6 27 9 10 10 16 2 21 30 MEAN QNH PRESSURE IN HPA 1012.6 1011.7 1014.8 1012.2 1012.4 1008.0 1007.6 1011.0 1012.7 1017.6 1018.3 1018.5 1013.1 MAX. QNH PRESSURE IN HPA 1017.5 1020.1 1022.0 1019.4 1017.6 1012.7 1013.2 1015.9 1017.7 1023.3 1022.5 1028.4 1028.4 DAY 16 22 2 24 1 21 31 30 22 11 5 15 MIN. QNH PRESSURE IN HPA 1006.8 1000.8 1007.1 1006.4 1006.4 1003.6 1003.7 1005.1 1007.2 1012.3 1015.1 1009.1 1000.8 DAY 27 15 24 6 27 9 10 10 16 2 21 30 MEAN QFF PRESSURE IN HPA 1013.2 1010.9 1011.3 1004.8 1001.2 993.9 992.5 997.7 1001.9 1010.2 1015.7 1019.7 1006.1 MAX. QFF PRESSURE IN HPA 1018.9 1018.8 1023.7 1009.0 1006.4 999.7 999.2 1003.2 1008.3 1015.2 1019.8 1031.3 1031.3 DAY 7 22 2 24 1 21 31 31 22 11 15 15 MIN. QFF PRESSURE IN HPA 1004.2 1001.5 999.5 999.8 993.0 989.4 987.1 991.1 995.9 1003.5 1010.8 1008.7 987.1 DAY 11 8 24 2 27 9 27 11 16 2 7 30 PRESSURE AT HOUR 2100 UTC. MEAN QFE PRESSURE IN HPA 840.0 839.4 842.0 839.9 840.0 836.5 836.1 839.0 840.4 844.5 844.8 845.0 840.6 MAX. QFE PRESSURE IN HPA 844.3 847.5 848.6 845.8 843.6 840.5 840.5 843.0 846.6 849.2 848.4 854.2 854.2 DAY 17 21 2 24 1 21 31 30 22 11 4 15 MIN. QFE PRESSURE IN HPA 835.2 830.1 835.9 834.5 835.2 833.0 832.9 834.3 835.9 840.2 841.5 837.0 830.1 DAY 11 15 24 6 27 9 27 10 16 2 27 30 MEAN QNH PRESSURE IN HPA 1012.6 1011.8 1014.9 1012.4 1012.6 1008.5 1008.0 1011.4 1013.1 1017.8 1018.2 1018.3 1013.3 MAX. QNH PRESSURE IN HPA 1017.6 1021.3 1022.6 1019.3 1016.8 1013.2 1013.2 1016.1 1020.3 1023.3 1022.3 1029.1 1029.1 DAY 17 21 2 24 1 21 31 30 22 11 4 15 MIN. QNH PRESSURE IN HPA 1007.0 1001.1 1007.8 1006.2 1007.0 1004.4 1004.3 1005.9 1007.8 1012.8 1014.3 1009.1 1001.1 DAY 11 15 24 6 27 9 27 10 16 2 27 30 MEAN QFF PRESSURE IN HPA 1011.6 1009.6 1010.9 1004.3 1001.0 994.0 992.4 997.4 1001.3 1009.3 1014.7 1018.3 1005.4 MAX. QFF PRESSURE IN HPA 1017.7 1017.5 1023.9 1008.2 1005.3 999.9 998.3 1002.6 1010.4 1013.8 1019.3 1030.3 1030.3 DAY 17 2 2 24 9 21 31 31 22 11 14 15 MIN. QFF PRESSURE IN HPA 1002.3 1000.4 1004.5 999.9 993.4 989.8 987.2 991.6 995.4 1002.6 1009.7 1006.1 987.2 DAY 11 24 25 11 27 9 10 11 16 3 1 30 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ESFAHAN (40800) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 32 37 N LONGITUDE 51 40 E DATA PROCESSING CENTER ELEVATION 1550.4 M MEANS AND EXTREMES FOR THE YEAR 1955 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AIR TEMPERATURE (C) 2.4 6.7 10.6 15.5 19.0 24.1 28.2 26.7 22.3 14.0 10.3 4.8 15.4 MINIMUN AIR TEMPERATURE (C) -3.7 -0.5 3.1 7.5 11.1 14.2 18.2 16.3 12.4 5.1 2.6 -1.0 7.1 DAYS WITH MINIMUM TEMP. >=21 0 0 0 0 0 0 2 0 0 0 0 0 2 DAYS WITH MINIMUM TEMP. <=-4 17 4 0 0 0 0 0 0 0 0 0 6 27 DAYS WITH FREEZING MIN.<= 0 29 19 3 2 0 0 0 0 0 0 7 20 80 TEMPERATURE RECORDS LOWEST(C) -8.0 -4.0 -2.0 0.0 6.0 12.0 15.0 11.0 9.0 1.0 -1.0 -5.0 -8.0 DAY 8 4 9 12 6 2 25 24 24 29 17 21 MAXIMUM AIR TEMPERATURE (C) 9.8 15.3 18.3 23.9 27.5 33.7 38.3 37.5 33.7 24.9 19.9 12.5 24.6 DAYS WITH MAXIMUM TEMP. >=30 0 0 0 0 11 27 31 31 29 0 0 0 129 DAYS WITH MAXIMUM TEMP. <= 0 0 0 0 0 0 0 0 0 0 0 0 0 0 TEMPERATURE RECORDS HIGHEST(C) 13.0 23.0 24.0 29.0 34.0 38.0 41.0 41.0 37.0 29.0 23.0 18.0 41.0 DAY 13 28 1 6 30 29 27 3 1 4 1 1 DIF. BETWEEN (MAX.-MIN.) (C) 13.5 15.8 15.2 16.4 16.4 19.5 20.1 21.2 21.3 19.8 17.3 13.5 17.5 MEAN DAILY TEMP. (MDT) (C) 3.0 7.4 10.7 15.7 19.3 24.0 28.2 26.9 23.1 15.0 11.3 5.8 15.9 COOLING DEG. DAYS(BASE 21 0C) 0.0 0.0 0.0 0.0 16.5 90.5 224.0 183.0 67.5 0.0 0.0 0.0 581.5 HEATING DEG. DAYS(BASE 18 0C) 464.5 296.5 226.0 76.0 24.5 0.0 0.0 0.0 0.0 95.0 202.0 379.5 1764.0 DEWPOINT (MEAN C) -3.8 -2.8 0.2 4.6 8.0 9.4 11.8 12.3 9.5 4.8 2.0 -1.6 4.5 MIXING RATIO (G/KG) 3.52 3.84 4.77 6.63 8.24 9.10 10.73 11.17 9.14 6.59 5.35 4.14 6.93 VAPOUR PRESSURE (HPA) 4.75 5.15 6.38 8.87 10.97 12.06 14.13 14.72 12.14 8.84 7.18 5.55 9.23 SATURATION DEF. (HPA) 2.82 5.39 7.03 9.82 12.38 20.02 26.57 22.90 17.19 8.66 6.11 3.46 11.86 RELATIVE HUMIDITY (MEAN %) 67 55 52 52 53 43 39 45 48 59 60 66 53 RELATIVE HUMIDITY (MAX. %) 84 78 76 76 77 67 61 70 75 86 85 86 77 RELATIVE HUMIDITY (MIN. %) 43 34 31 31 30 24 21 22 25 30 33 41 30 RELATIVE HUMIDITY (MEAN% 03UTC) 82 74 71 71 73 64 57 68 70 84 81 81 73 RELATIVE HUMIDITY (MEAN% 09UTC) 45 37 35 36 34 25 23 24 26 33 37 47 34 RELATIVE HUMIDITY (MEAN% 15UTC) 66 46 42 45 44 36 36 41 48 61 59 65 49 RH=0 => RELATIVE HUMIDITY < 0.5% AMOUNT OF PRECIPITATION MM. 10.0 3.2 3.5 44.3 32.2 1.5 0.0 0.0 0.0 5.0 2.3 18.5 120.5 DAYS WITH PRECIPITATION >=10 0 0 0 1 1 0 0 0 0 0 0 1 3 DAYS WITH PRECIPITATION >= 5 1 0 0 3 1 0 0 0 0 0 0 2 7 DAYS WITH PRECIPITATION >= 1 2 1 2 4 5 1 0 0 0 2 1 3 21 DAYS WITH PRECIPITATION 4 1 9 6 10 2 0 0 0 3 7 6 48 GREATEST DAILY PRECIPITATION 7.0 3.2 2.0 24.0 23.0 1.0 0.0 0.0 0.0 3.0 2.0 11.0 24.0 DAY 3 1 27 25 16 4 ** ** ** 12 13 8 DAY WITH THUNDER STORM 0 0 0 1 2 1 0 0 0 0 0 0 4 DAYS WITH SNOW OR SLEET 1 0 0 0 0 0 0 0 0 0 0 1 2 DAYS WITH DUST 0 1 0 1 2 1 0 1 1 0 0 0 7 WIND DIRECTION (PREVAILING) 270 270 270 270 270 270 270 90 45 270 225 270 270 PREVAILING WIND SPEED(KNOTS) 3.5 7.0 7.5 7.6 5.9 4.2 4.0 4.9 4.6 3.7 3.7 3.9 5.1 PREVAILING WIND PERCENT 47.6 33.6 31.0 26.3 27.5 27.1 31.0 21.0 20.8 13.3 28.8 26.2 26.9 CALMS PERCENT OF WIND 10.9 11.7 13.7 12.1 10.9 13.3 13.3 5.6 7.9 22.2 12.9 10.9 12.1 NO. OF WIND OBSERVATION 248 223 248 240 247 240 248 248 240 248 240 248 2918 VECTOR WIND DIRECTION (MEAN) 263 251 251 245 275 244 283 74 72 350 267 261 260 VECTOR WIND MAGNITUDE(KNOTS) 1.6 3.8 4.1 3.5 2.1 0.3 1.5 0.9 0.8 0.6 2.1 1.4 1.5 WIND STEADINESES (MEAN %) 50.0 67.9 62.1 54.7 33.3 7.3 40.5 25.7 22.9 20.7 58.3 38.9 34.1 WIND SPEED (MEAN KNOTS) 3.2 5.6 6.6 6.4 6.3 4.1 3.7 3.5 3.5 2.9 3.6 3.6 4.4 FASTEST WIND DIRECTION 270 270 270 230 230 230 270 90 50 330 270 330 230 FASTEST WIND SPEED (KNOTS) 8 33 27 33 40 20 20 21 20 20 25 25 40 DAY 5 23 5 10 1 5 28 18 13 7 23 20 DAYS WITH SKY CLEAR (0-2)/8 16 20 7 9 11 26 31 25 30 26 17 14 232 DAYS WITH P.CLOUDY (3-6)/8 10 5 17 15 17 4 0 4 0 3 11 11 97 DAYS WITH CLOUDY (7-8)/8 5 3 7 6 3 0 0 2 0 2 2 6 36 DAYS WITH VISIBILITY =< 2 KM 1 1 0 0 1 1 0 0 0 0 0 0 4 DURATION OF SUNSHINE HOURS ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ESFAHAN (40800) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 32 37 N LONGITUDE 51 40 E DATA PROCESSING CENTER ELEVATION 1550.4 M MEANS AND EXTREMES FOR THE YEAR 1955 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL MEAN QFE PRESSURE IN HPA 843.7 840.8 838.5 840.8 840.0 837.3 833.6 835.8 839.1 843.7 843.5 840.9 839.8 MAX. QFE PRESSURE IN HPA 850.5 847.1 845.4 846.2 846.3 842.4 840.0 842.6 846.7 849.5 849.3 848.8 850.5 DAY-HOUR 9- 6 8- 6 3-12 1- 6 8-21 2- 6 10- 6 22- 6 21- 6 18- 6 16- 6 2- 6 MIN. QFE PRESSURE IN HPA 836.9 833.2 831.5 832.9 833.0 830.5 828.7 830.0 831.9 839.3 838.7 832.5 828.7 DAY-HOUR 26-12 23-12 12-12 10-12 2-18 29-15 28-15 7-15 1-15 6-15 24-12 29- 9 MEAN QNH PRESSURE IN HPA 1016.9 1013.5 1010.8 1013.4 1012.6 1009.4 1005.1 1007.7 1011.6 1016.9 1016.7 1013.7 1012.4 MAX. QNH PRESSURE IN HPA 1024.8 1020.8 1018.9 1019.8 1019.9 1015.4 1012.6 1015.6 1020.4 1023.6 1023.4 1022.8 1024.8 DAY-HOUR 9- 6 8- 6 3-12 1- 6 8-21 2- 6 10- 6 22- 6 21- 6 18- 6 16- 6 2- 6 MIN. QNH PRESSURE IN HPA 1009.0 1004.7 1002.7 1004.3 1004.4 1001.5 999.4 1000.9 1003.2 1011.8 1011.1 1003.8 999.4 DAY-HOUR 26-12 23-12 12-12 10-12 2-18 29-15 28-15 7-15 1-15 6-15 24-12 29- 9 MEAN QFF PRESSURE IN HPA 1018.4 1012.0 1006.5 1006.0 1002.7 996.6 989.6 993.0 999.7 1010.5 1012.7 1013.3 1005.1 MAX. QFF PRESSURE IN HPA 1029.2 1021.4 1014.6 1016.4 1011.5 1004.9 997.4 1003.9 1011.3 1018.9 1020.7 1024.4 1029.2 DAY-HOUR 10- 6 8- 6 15- 3 13- 3 9- 6 2- 6 10- 3 22- 3 23- 3 18- 3 17- 3 23- 6 MIN. QFF PRESSURE IN HPA 1007.9 999.3 998.2 997.0 994.7 986.7 982.8 984.1 989.0 1000.8 1003.9 1001.4 982.8 DAY-HOUR 26-21 23- 3 12-12 25-12 22- 9 29-21 28-12 7-12 1-12 7- 9 1- 0 29- 9 PRESSURE AT HOUR 0000 UTC. MEAN QFE PRESSURE IN HPA 843.8 840.7 838.4 840.8 840.0 837.6 833.7 836.1 839.1 843.8 843.5 841.1 839.9 MAX. QFE PRESSURE IN HPA 849.4 845.8 842.0 844.9 843.9 841.7 838.2 841.0 845.4 847.8 847.0 846.6 849.4 DAY 10 9 31 2 18 2 10 22 23 15 17 23 MIN. QFE PRESSURE IN HPA 837.5 834.1 833.9 833.7 834.4 832.2 829.8 831.0 832.9 840.1 839.5 834.3 829.8 DAY 27 23 13 10 3 23 29 7 1 7 1 29 MEAN QNH PRESSURE IN HPA 1017.0 1013.4 1010.8 1013.5 1012.6 1009.8 1005.3 1008.0 1011.6 1017.0 1016.7 1013.8 1012.5 MAX. QNH PRESSURE IN HPA 1023.5 1019.3 1014.9 1018.3 1017.1 1014.6 1010.5 1013.7 1018.9 1021.6 1020.7 1020.3 1023.5 DAY 10 9 31 2 18 2 10 22 23 15 17 23 MIN. QNH PRESSURE IN HPA 1009.7 1005.7 1005.5 1005.2 1006.1 1003.5 1000.7 1002.1 1004.3 1012.7 1012.0 1005.9 1000.7 DAY 27 23 13 10 3 23 29 7 1 7 1 29 MEAN QFF PRESSURE IN HPA 1017.9 1011.4 1006.1 1005.8 1002.6 996.9 989.5 992.8 999.0 1009.9 1012.1 1012.6 1004.7 MAX. QFF PRESSURE IN HPA 1026.9 1018.8 1010.5 1013.3 1010.8 1002.9 995.3 1000.0 1007.9 1016.3 1017.8 1020.9 1026.9 DAY 10 9 15 13 9 2 11 22 23 15 17 23 MIN. QFF PRESSURE IN HPA 1008.7 1001.3 1000.1 998.0 995.8 988.6 984.4 985.3 990.3 1002.4 1003.9 1004.3 984.4 DAY 27 23 4 10 22 30 28 7 1 7 1 29 PRESSURE AT HOUR 0300 UTC. MEAN QFE PRESSURE IN HPA 843.9 841.2 839.0 841.4 840.7 838.3 834.5 836.8 840.0 844.4 843.9 841.2 840.4 MAX. QFE PRESSURE IN HPA 849.4 845.9 843.1 845.5 844.6 842.0 839.5 842.1 846.2 848.4 847.7 846.7 849.4 DAY 10 8 31 2 17 2 10 22 23 18 16 2 MIN. QFE PRESSURE IN HPA 837.8 833.5 833.7 833.7 835.3 833.4 830.5 831.7 834.1 841.3 839.9 833.7 830.5 DAY 27 23 12 10 3 23 29 7 1 7 1 29 MEAN QNH PRESSURE IN HPA 1017.2 1014.0 1011.4 1014.2 1013.3 1010.6 1006.1 1008.9 1012.6 1017.7 1017.1 1014.0 1013.1 MAX. QNH PRESSURE IN HPA 1023.5 1019.4 1016.2 1019.0 1017.9 1014.9 1012.0 1015.0 1019.8 1022.3 1021.5 1020.4 1023.5 DAY 10 8 31 2 17 2 10 22 23 18 16 2 MIN. QNH PRESSURE IN HPA 1010.0 1005.0 1005.2 1005.2 1007.1 1004.9 1001.5 1002.9 1005.7 1014.1 1012.5 1005.2 1001.5 DAY 27 23 12 10 3 23 29 7 1 7 1 29 MEAN QFF PRESSURE IN HPA 1019.6 1013.6 1008.1 1008.1 1004.6 998.8 991.8 995.7 1002.4 1013.3 1014.8 1014.4 1007.1 MAX. QFF PRESSURE IN HPA 1028.3 1020.7 1014.6 1016.4 1011.5 1004.9 997.4 1003.9 1011.3 1018.9 1020.7 1023.1 1028.3 DAY 10 9 15 13 9 2 10 22 23 18 17 23 MIN. QFF PRESSURE IN HPA 1010.1 999.3 999.7 999.5 996.7 991.1 986.9 988.6 993.6 1007.3 1007.8 1005.0 986.9 DAY 27 23 4 10 22 30 28 7 1 6 1 29 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ESFAHAN (40800) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 32 37 N LONGITUDE 51 40 E DATA PROCESSING CENTER ELEVATION 1550.4 M MEANS AND EXTREMES FOR THE YEAR 1955 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 0600 UTC. MEAN QFE PRESSURE IN HPA 844.9 842.2 839.6 842.0 841.1 838.5 834.8 837.1 840.6 845.2 844.8 842.2 841.1 MAX. QFE PRESSURE IN HPA 850.5 847.1 844.5 846.2 845.2 842.4 840.0 842.6 846.7 849.5 849.3 848.8 850.5 DAY 9 8 22 1 17 2 10 22 21 18 16 2 MIN. QFE PRESSURE IN HPA 838.5 834.2 833.7 834.0 835.4 833.5 830.9 832.0 834.1 841.7 840.9 834.1 830.9 DAY 27 23 12 10 3 23 28 7 1 7 23 29 MEAN QNH PRESSURE IN HPA 1018.3 1015.1 1012.1 1014.9 1013.8 1010.9 1006.5 1009.2 1013.3 1018.6 1018.1 1015.1 1013.8 MAX. QNH PRESSURE IN HPA 1024.8 1020.8 1017.8 1019.8 1018.6 1015.4 1012.6 1015.6 1020.4 1023.6 1023.4 1022.8 1024.8 DAY 9 8 22 1 17 2 10 22 21 18 16 2 MIN. QNH PRESSURE IN HPA 1010.8 1005.8 1005.2 1005.6 1007.2 1005.0 1002.0 1003.3 1005.7 1014.6 1013.6 1005.7 1002.0 DAY 27 23 12 10 3 23 28 7 1 7 23 29 MEAN QFF PRESSURE IN HPA 1020.6 1014.1 1008.0 1007.4 1004.2 998.0 990.9 994.7 1001.4 1012.2 1014.4 1015.5 1006.8 MAX. QFF PRESSURE IN HPA 1029.2 1021.4 1013.8 1014.3 1011.5 1004.9 996.7 1002.6 1009.8 1017.9 1020.6 1024.4 1029.2 DAY 10 8 15 13 9 2 10 22 23 18 17 23 MIN. QFF PRESSURE IN HPA 1010.2 1001.7 1001.6 999.9 996.2 990.8 986.2 988.0 992.8 1005.3 1007.6 1005.6 986.2 DAY 27 23 12 25 22 30 28 7 1 7 1 29 PRESSURE AT HOUR 0900 UTC. MEAN QFE PRESSURE IN HPA 843.7 841.1 838.4 840.9 840.1 837.6 834.0 836.1 839.4 843.8 843.4 840.9 840.0 MAX. QFE PRESSURE IN HPA 849.3 846.2 843.3 845.1 844.3 841.3 838.9 841.6 845.6 848.0 847.8 847.3 849.3 DAY 9 8 22 1 17 6 10 22 21 18 16 2 MIN. QFE PRESSURE IN HPA 838.1 833.5 832.0 833.6 834.1 832.4 830.0 831.1 833.0 840.3 839.3 832.5 830.0 DAY 27 23 12 10 3 23 28 7 1 6 24 29 MEAN QNH PRESSURE IN HPA 1016.9 1013.8 1010.8 1013.6 1012.7 1009.8 1005.6 1008.1 1011.9 1017.0 1016.5 1013.6 1012.5 MAX. QNH PRESSURE IN HPA 1023.4 1019.8 1016.4 1018.5 1017.6 1014.1 1011.3 1014.4 1019.1 1021.9 1021.6 1021.1 1023.4 DAY 9 8 22 1 17 6 10 22 21 18 16 2 MIN. QNH PRESSURE IN HPA 1010.4 1005.0 1003.3 1005.1 1005.7 1003.7 1000.9 1002.2 1004.4 1012.9 1011.8 1003.8 1000.9 DAY 27 23 12 10 3 23 28 7 1 6 24 29 MEAN QFF PRESSURE IN HPA 1017.5 1011.4 1005.8 1005.5 1001.9 996.2 989.5 992.6 999.0 1009.4 1011.4 1012.3 1004.4 MAX. QFF PRESSURE IN HPA 1025.9 1018.8 1012.0 1012.8 1007.6 1002.2 995.0 1000.7 1007.1 1014.9 1016.9 1021.1 1025.9 DAY 9 8 18 13 10 2 11 22 22 18 16 23 MIN. QFF PRESSURE IN HPA 1008.4 1001.6 998.4 997.7 994.7 986.8 984.3 984.9 990.1 1000.8 1004.1 1001.4 984.3 DAY 27 23 12 9 22 30 28 7 1 7 1 29 PRESSURE AT HOUR 1200 UTC. MEAN QFE PRESSURE IN HPA 842.8 839.8 837.5 839.6 838.9 836.3 832.8 834.8 837.9 842.6 842.4 840.0 838.8 MAX. QFE PRESSURE IN HPA 848.4 845.0 845.4 843.7 842.9 839.5 837.7 839.8 844.1 847.0 846.6 846.3 848.4 DAY 9 8 3 1 9 2 10 21 21 18 16 2 MIN. QFE PRESSURE IN HPA 836.9 833.2 831.5 832.9 834.3 831.2 828.8 830.4 832.1 839.5 838.7 832.7 828.8 DAY 26 23 12 10 2 30 28 7 1 31 24 29 MEAN QNH PRESSURE IN HPA 1015.8 1012.4 1009.6 1012.1 1011.3 1008.3 1004.1 1006.5 1010.1 1015.7 1015.4 1012.6 1011.2 MAX. QNH PRESSURE IN HPA 1022.3 1018.4 1018.9 1016.9 1015.9 1012.0 1009.9 1012.3 1017.3 1020.7 1020.3 1019.9 1022.3 DAY 9 8 3 1 9 2 10 21 21 18 16 2 MIN. QNH PRESSURE IN HPA 1009.0 1004.7 1002.7 1004.3 1005.9 1002.3 999.5 1001.4 1003.4 1012.0 1011.1 1004.1 999.5 DAY 26 23 12 10 2 30 28 7 1 31 24 29 MEAN QFF PRESSURE IN HPA 1016.6 1010.1 1004.9 1004.3 1001.3 995.0 988.1 991.2 997.5 1008.4 1010.7 1011.5 1003.3 MAX. QFF PRESSURE IN HPA 1025.2 1017.2 1012.9 1009.8 1009.0 1001.6 993.5 998.9 1006.0 1014.2 1015.9 1019.7 1025.2 DAY 9 8 3 13 9 4 10 21 22 18 16 23 MIN. QFF PRESSURE IN HPA 1008.5 1002.2 998.2 997.0 996.3 986.9 982.8 984.1 989.0 1002.3 1003.9 1001.5 982.8 DAY 26 23 12 25 30 30 28 7 1 6 1 29 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ESFAHAN (40800) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 32 37 N LONGITUDE 51 40 E DATA PROCESSING CENTER ELEVATION 1550.4 M MEANS AND EXTREMES FOR THE YEAR 1955 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 1500 UTC. MEAN QFE PRESSURE IN HPA 843.2 840.0 837.5 839.8 838.9 835.9 832.3 834.4 837.7 842.7 842.9 840.4 838.8 MAX. QFE PRESSURE IN HPA 848.4 845.1 841.4 843.5 842.5 839.5 836.7 839.7 843.8 846.8 846.8 846.0 848.4 DAY 9 8 18 1 9 1 9 21 21 18 16 2 MIN. QFE PRESSURE IN HPA 837.1 834.2 832.0 834.1 834.8 830.5 828.7 830.0 831.9 839.3 839.2 833.6 828.7 DAY 26 23 12 10 2 29 28 7 1 6 2 29 MEAN QNH PRESSURE IN HPA 1016.3 1012.6 1009.7 1012.3 1011.3 1007.9 1003.6 1006.0 1009.9 1015.8 1016.0 1013.1 1011.2 MAX. QNH PRESSURE IN HPA 1022.3 1018.5 1014.2 1016.6 1015.5 1012.0 1008.7 1012.2 1017.0 1020.5 1020.5 1019.6 1022.3 DAY 9 8 18 1 9 1 9 21 21 18 16 2 MIN. QNH PRESSURE IN HPA 1009.2 1005.8 1003.3 1005.7 1006.5 1001.5 999.4 1000.9 1003.2 1011.8 1011.6 1005.1 999.4 DAY 26 23 12 10 2 29 28 7 1 6 2 29 MEAN QFF PRESSURE IN HPA 1018.5 1012.0 1006.3 1006.0 1002.5 995.8 988.9 992.4 999.3 1011.0 1013.4 1013.4 1005.0 MAX. QFF PRESSURE IN HPA 1026.7 1018.8 1010.9 1011.8 1008.7 1002.1 994.1 1000.9 1007.8 1016.6 1019.0 1022.0 1026.7 DAY 9 8 18 12 9 4 9 21 22 14 16 23 MIN. QFF PRESSURE IN HPA 1009.9 1002.4 1000.8 1001.6 998.6 987.4 984.8 985.9 990.5 1004.4 1007.6 1004.3 984.8 DAY 26 23 4 9 25 29 28 7 1 1 1 29 PRESSURE AT HOUR 1800 UTC. MEAN QFE PRESSURE IN HPA 843.6 840.7 838.7 840.7 840.1 837.0 833.4 835.4 839.1 843.7 843.7 841.0 839.8 MAX. QFE PRESSURE IN HPA 849.2 845.6 842.9 844.4 844.4 841.9 838.0 840.6 844.9 847.7 847.1 847.5 849.2 DAY 9 8 31 17 18 1 9 21 22 18 16 2 MIN. QFE PRESSURE IN HPA 837.6 835.1 833.7 835.4 833.0 831.4 829.7 830.4 832.8 839.6 840.6 834.7 829.7 DAY 26 23 12 9 2 29 28 6 1 31 23 29 MEAN QNH PRESSURE IN HPA 1016.8 1013.4 1011.0 1013.4 1012.7 1009.1 1004.9 1007.3 1011.5 1016.8 1016.9 1013.7 1012.3 MAX. QNH PRESSURE IN HPA 1023.3 1019.1 1015.9 1017.7 1017.7 1014.8 1010.3 1013.3 1018.3 1021.5 1020.8 1021.3 1023.3 DAY 9 8 31 17 18 1 9 21 22 18 16 2 MIN. QNH PRESSURE IN HPA 1009.8 1006.9 1005.2 1007.2 1004.4 1002.6 1000.6 1001.4 1004.2 1012.1 1013.3 1006.4 1000.6 DAY 26 23 12 9 2 29 28 6 1 31 23 29 MEAN QFF PRESSURE IN HPA 1019.0 1012.3 1006.9 1005.8 1002.9 996.0 989.4 992.8 999.7 1010.4 1013.1 1014.1 1005.2 MAX. QFF PRESSURE IN HPA 1027.8 1019.3 1011.1 1012.4 1010.2 1004.3 995.0 1000.3 1007.6 1015.7 1018.5 1023.1 1027.8 DAY 9 8 22 12 8 1 10 22 22 12 28 21 MIN. QFF PRESSURE IN HPA 1010.1 1004.7 1001.8 999.7 996.8 987.9 985.3 986.3 991.0 1003.4 1007.2 1006.2 985.3 DAY 26 23 3 9 2 29 27 7 1 1 2 29 PRESSURE AT HOUR 2100 UTC. MEAN QFE PRESSURE IN HPA 843.6 841.0 838.7 840.9 840.2 837.3 833.7 835.9 839.4 843.8 843.7 840.8 839.9 MAX. QFE PRESSURE IN HPA 849.1 845.9 843.4 844.8 846.3 841.9 838.7 840.9 845.0 847.9 847.1 846.6 849.1 DAY 9 8 31 1 8 1 9 21 21 18 16 2 MIN. QFE PRESSURE IN HPA 837.3 836.2 833.5 835.0 834.6 831.8 830.1 830.8 833.3 839.5 840.4 834.6 830.1 DAY 26 22 12 9 2 29 27 6 1 31 23 28 MEAN QNH PRESSURE IN HPA 1016.8 1013.8 1011.0 1013.6 1012.8 1009.4 1005.3 1007.8 1011.9 1017.0 1016.9 1013.5 1012.5 MAX. QNH PRESSURE IN HPA 1023.2 1019.4 1016.5 1018.2 1019.9 1014.8 1011.1 1013.6 1018.4 1021.8 1020.8 1020.3 1023.2 DAY 9 8 31 1 8 1 9 21 21 18 16 2 MIN. QNH PRESSURE IN HPA 1009.4 1008.2 1005.0 1006.8 1006.3 1003.0 1001.1 1001.9 1004.8 1012.0 1013.0 1006.3 1001.1 DAY 26 22 12 9 2 29 27 6 1 31 23 28 MEAN QFF PRESSURE IN HPA 1017.4 1011.4 1006.0 1005.4 1002.0 995.9 989.2 992.3 999.1 1009.5 1011.9 1012.4 1004.4 MAX. QFF PRESSURE IN HPA 1026.0 1018.8 1010.7 1012.8 1009.4 1002.7 994.9 1000.0 1006.4 1014.9 1017.5 1020.8 1026.0 DAY 9 8 22 12 9 1 9 21 23 18 16 23 MIN. QFF PRESSURE IN HPA 1007.9 1003.8 1000.1 998.3 996.9 986.7 984.5 984.7 990.7 1001.1 1006.6 1005.0 984.5 DAY 26 22 3 9 21 29 27 6 1 6 23 29 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ESFAHAN (40800) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 32 37 N LONGITUDE 51 40 E DATA PROCESSING CENTER ELEVATION 1550.4 M MEANS AND EXTREMES FOR THE YEAR 1956 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AIR TEMPERATURE (C) 1.8 6.9 9.9 15.2 20.7 25.5 27.6 24.6 21.5 13.8 8.7 3.1 14.9 MINIMUN AIR TEMPERATURE (C) -3.9 -0.3 3.5 7.7 10.4 15.1 18.3 15.0 11.9 3.9 0.1 -1.8 6.6 DAYS WITH MINIMUM TEMP. >=21 0 0 0 0 0 0 5 0 0 0 0 0 5 DAYS WITH MINIMUM TEMP. <=-4 19 7 0 1 0 0 0 0 0 0 0 7 34 DAYS WITH FREEZING MIN.<= 0 26 16 3 2 0 0 0 0 0 1 19 23 90 TEMPERATURE RECORDS LOWEST(C) -8.0 -6.0 -3.0 -4.0 6.0 11.0 14.0 11.0 7.0 0.0 -3.0 -7.0 -8.0 DAY 18 13 5 2 1 3 2 31 30 31 18 14 MAXIMUM AIR TEMPERATURE (C) 9.0 14.9 17.1 23.0 30.4 35.6 36.8 34.1 32.2 25.7 19.3 9.5 24.0 DAYS WITH MAXIMUM TEMP. >=30 0 0 0 0 20 30 31 30 26 0 0 0 137 DAYS WITH MAXIMUM TEMP. <= 0 0 0 0 0 0 0 0 0 0 0 0 0 0 TEMPERATURE RECORDS HIGHEST(C) 14.0 19.0 22.0 29.0 35.0 39.0 42.0 36.0 35.0 29.0 23.0 18.0 42.0 DAY 28 28 22 11 31 27 14 4 16 14 5 8 DIF. BETWEEN (MAX.-MIN.) (C) 12.9 15.2 13.6 15.3 20.0 20.5 18.5 19.1 20.3 21.8 19.2 11.3 17.4 MEAN DAILY TEMP. (MDT) (C) 2.5 7.3 10.3 15.3 20.4 25.3 27.5 24.5 22.0 14.8 9.7 3.8 15.3 COOLING DEG. DAYS(BASE 21 0C) 0.0 0.0 0.0 0.0 24.5 129.5 202.5 109.5 44.0 0.0 0.0 0.0 510.0 HEATING DEG. DAYS(BASE 18 0C) 448.5 310.5 238.5 84.0 12.5 0.0 0.0 0.0 3.5 98.0 250.0 425.0 1870.5 DEWPOINT (MEAN C) -4.8 -3.1 -2.1 4.8 6.3 12.0 14.3 11.4 10.1 4.1 -0.8 -2.0 4.2 MIXING RATIO (G/KG) 3.30 3.86 4.14 6.85 7.39 10.84 12.66 10.38 9.55 6.18 4.35 4.02 6.96 VAPOUR PRESSURE (HPA) 4.43 5.18 5.53 9.15 9.85 14.34 16.67 13.79 12.71 8.32 5.88 5.43 9.27 SATURATION DEF. (HPA) 2.86 5.37 7.24 9.23 16.69 20.59 22.63 19.22 15.04 9.11 6.33 2.56 11.41 RELATIVE HUMIDITY (MEAN %) 66 53 48 54 43 46 48 47 52 57 56 72 54 RELATIVE HUMIDITY (MAX. %) 86 79 74 78 70 69 73 72 78 85 85 88 78 RELATIVE HUMIDITY (MIN. %) 38 28 27 33 23 27 28 27 29 28 29 52 31 RELATIVE HUMIDITY (MEAN% 03UTC) 81 71 69 74 64 68 70 72 78 84 81 84 75 RELATIVE HUMIDITY (MEAN% 09UTC) 44 35 32 35 26 29 32 29 30 30 30 56 34 RELATIVE HUMIDITY (MEAN% 15UTC) 63 47 39 46 34 43 40 41 48 56 53 68 48 RH=0 => RELATIVE HUMIDITY < 0.5% AMOUNT OF PRECIPITATION MM. 9.5 4.8 33.1 40.8 0.0 0.0 65.6 0.0 0.0 0.0 0.0 20.7 174.5 DAYS WITH PRECIPITATION >=10 0 0 1 1 0 0 2 0 0 0 0 1 5 DAYS WITH PRECIPITATION >= 5 1 0 3 1 0 0 3 0 0 0 0 1 9 DAYS WITH PRECIPITATION >= 1 2 3 6 7 0 0 3 0 0 0 0 5 26 DAYS WITH PRECIPITATION 3 5 9 13 0 0 5 0 1 0 0 11 47 GREATEST DAILY PRECIPITATION 5.0 2.4 13.0 26.3 0.0 0.0 30.0 0.0 0.0 0.0 0.0 11.0 30.0 DAY 14 29 26 23 ** ** 22 ** ** ** ** 21 DAY WITH THUNDER STORM 0 0 0 2 0 0 3 0 0 0 0 0 5 DAYS WITH SNOW OR SLEET 2 0 0 0 0 0 0 0 0 0 0 5 7 DAYS WITH DUST 0 0 3 3 0 2 0 0 1 0 1 1 11 WIND DIRECTION (PREVAILING) 270 270 270 270 270 225 90 90 270 90 270 90 270 PREVAILING WIND SPEED(KNOTS) 4.0 5.4 7.5 7.4 6.6 4.8 5.1 5.4 3.8 3.7 4.4 3.6 5.2 PREVAILING WIND PERCENT 39.2 47.8 51.0 38.8 46.4 20.8 35.5 34.7 36.7 36.7 27.1 30.4 31.8 CALMS PERCENT OF WIND 4.3 1.3 1.6 0.0 2.4 3.8 6.5 9.3 6.7 9.3 5.4 7.5 4.9 NO. OF WIND OBSERVATION 232 232 247 240 248 240 248 248 240 248 240 240 2903 VECTOR WIND DIRECTION (MEAN) 251 260 252 254 250 145 89 87 117 84 131 233 238 VECTOR WIND MAGNITUDE(KNOTS) 1.3 2.9 5.1 3.9 3.3 0.7 1.9 3.0 0.3 1.2 0.5 0.4 0.9 WIND STEADINESES (MEAN %) 33.3 47.5 63.0 45.3 51.6 15.6 43.2 63.8 7.0 35.3 11.6 10.5 17.3 WIND SPEED (MEAN KNOTS) 3.9 6.1 8.1 8.6 6.4 4.5 4.4 4.7 4.3 3.4 4.3 3.8 5.2 FASTEST WIND DIRECTION 230 230 230 310 270 230 130 50 230 90 270 230 230 FASTEST WIND SPEED (KNOTS) 30 30 37 25 24 15 24 18 18 13 30 24 37 DAY 31 8 30 30 4 12 20 7 4 24 9 11 DAYS WITH SKY CLEAR (0-2)/8 18 6 11 10 31 30 23 27 28 29 18 10 241 DAYS WITH P.CLOUDY (3-6)/8 7 14 12 9 0 0 7 3 2 2 9 10 75 DAYS WITH CLOUDY (7-8)/8 4 9 8 11 0 0 1 1 0 0 3 10 47 DAYS WITH VISIBILITY =< 2 KM 2 0 1 0 0 2 0 0 1 0 2 8 16 DURATION OF SUNSHINE HOURS ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ESFAHAN (40800) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 32 37 N LONGITUDE 51 40 E DATA PROCESSING CENTER ELEVATION 1550.4 M MEANS AND EXTREMES FOR THE YEAR 1956 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL MEAN QFE PRESSURE IN HPA 840.4 840.1 836.5 840.4 839.5 838.2 836.6 840.8 841.1 845.7 846.5 845.8 841.0 MAX. QFE PRESSURE IN HPA 849.9 847.1 844.3 846.6 844.9 844.3 842.1 847.8 847.6 851.4 852.8 852.5 852.8 DAY-HOUR 17-18 4- 6 5- 6 15- 6 23- 6 6- 6 30- 6 31- 6 30- 6 26- 6 20- 6 3- 6 MIN. QFE PRESSURE IN HPA 830.2 830.3 829.0 832.1 832.6 831.1 831.2 835.1 835.3 839.4 837.9 838.7 829.0 DAY-HOUR 15- 9 29-12 29-15 5-12 25-15 28-15 15-12 15-15 23-15 28-12 8-12 10-12 MEAN QNH PRESSURE IN HPA 1013.1 1012.7 1008.5 1013.0 1012.0 1010.4 1008.7 1013.5 1013.9 1019.2 1020.1 1019.3 1013.7 MAX. QNH PRESSURE IN HPA 1024.1 1020.8 1017.6 1020.3 1018.3 1017.6 1015.0 1021.6 1021.4 1025.8 1027.5 1027.1 1027.5 DAY-HOUR 17-18 4- 6 5- 6 15- 6 23- 6 6- 6 30- 6 31- 6 30- 6 26- 6 20- 6 3- 6 MIN. QNH PRESSURE IN HPA 1001.2 1001.3 999.8 1003.4 1004.0 1002.2 1002.3 1006.9 1007.1 1011.9 1010.1 1011.1 999.8 DAY-HOUR 15- 9 29-12 29-15 5-12 25-15 28-15 15-12 15-15 23-15 28-12 8-12 10-12 MEAN QFF PRESSURE IN HPA 1014.7 1011.0 1004.7 1005.7 1001.4 996.6 993.4 1000.2 1002.5 1013.0 1017.4 1020.3 1006.7 MAX. QFF PRESSURE IN HPA 1028.5 1023.2 1017.1 1021.8 1009.2 1005.4 1002.0 1011.6 1015.2 1022.2 1026.2 1029.7 1029.7 DAY-HOUR 17-18 13- 3 5- 6 2- 3 11- 3 6- 3 30- 3 31- 3 30- 3 26- 3 20- 3 3- 6 MIN. QFF PRESSURE IN HPA 999.6 994.8 995.8 994.0 991.2 986.3 984.0 992.0 993.9 1004.1 1005.3 1007.2 984.0 DAY-HOUR 15- 9 29- 0 29-12 29-21 25-12 28-12 15-21 15-12 9-12 17-12 8-12 10-21 PRESSURE AT HOUR 0000 UTC. MEAN QFE PRESSURE IN HPA 840.5 840.0 836.5 840.4 839.7 838.3 837.0 840.8 841.4 845.9 846.6 845.8 841.1 MAX. QFE PRESSURE IN HPA 846.5 845.5 842.0 845.4 843.4 842.0 841.2 846.9 846.4 850.1 850.5 851.4 851.4 DAY 26 13 6 16 23 6 25 31 30 26 21 3 MIN. QFE PRESSURE IN HPA 833.1 831.3 831.1 832.9 834.9 832.1 832.1 836.8 837.2 841.1 840.1 839.3 831.1 DAY 15 29 24 30 28 28 16 5 12 29 8 11 MEAN QNH PRESSURE IN HPA 1013.2 1012.6 1008.4 1013.0 1012.2 1010.6 1009.0 1013.6 1014.1 1019.4 1020.2 1019.3 1013.8 MAX. QNH PRESSURE IN HPA 1020.1 1019.0 1014.9 1018.9 1016.5 1014.9 1014.0 1020.6 1020.0 1024.3 1024.8 1025.8 1025.8 DAY 26 13 6 16 23 6 25 31 30 26 21 3 MIN. QNH PRESSURE IN HPA 1004.5 1002.5 1002.2 1004.3 1006.6 1003.4 1003.4 1008.9 1009.3 1013.9 1012.7 1011.8 1002.2 DAY 15 29 24 30 28 28 16 5 12 29 8 11 MEAN QFF PRESSURE IN HPA 1014.1 1010.3 1004.1 1005.5 1001.5 996.5 993.5 999.7 1002.2 1012.6 1016.6 1019.7 1006.4 MAX. QFF PRESSURE IN HPA 1022.3 1020.5 1012.2 1019.6 1008.8 1002.9 999.5 1009.0 1012.7 1018.5 1021.8 1027.2 1027.2 DAY 21 13 14 2 11 6 30 31 30 26 21 25 MIN. QFF PRESSURE IN HPA 1002.8 994.8 997.0 994.1 994.4 987.3 986.2 994.2 996.2 1006.6 1007.3 1010.0 986.2 DAY 15 29 24 30 28 28 16 5 9 17 9 11 PRESSURE AT HOUR 0300 UTC. MEAN QFE PRESSURE IN HPA 840.7 840.5 837.1 841.0 840.3 839.2 837.5 841.8 842.1 846.5 847.2 846.1 841.7 MAX. QFE PRESSURE IN HPA 847.6 846.1 842.9 846.4 844.4 843.2 841.8 847.3 847.0 850.6 851.5 851.7 851.7 DAY 26 13 6 15 23 6 30 31 30 26 20 3 MIN. QFE PRESSURE IN HPA 830.8 830.4 831.1 832.8 835.5 832.6 832.5 837.7 838.0 841.8 840.2 839.7 830.4 DAY 15 29 18 5 27 28 16 15 12 29 8 11 MEAN QNH PRESSURE IN HPA 1013.3 1013.2 1009.2 1013.8 1013.0 1011.7 1009.7 1014.6 1015.0 1020.2 1020.9 1019.7 1014.5 MAX. QNH PRESSURE IN HPA 1021.4 1019.7 1015.9 1020.0 1017.7 1016.3 1014.7 1021.1 1020.7 1024.9 1026.0 1026.2 1026.2 DAY 26 13 6 15 23 6 30 31 30 26 20 3 MIN. QNH PRESSURE IN HPA 1001.9 1001.4 1002.2 1004.2 1007.3 1004.0 1003.8 1009.9 1010.3 1014.7 1012.8 1012.2 1001.4 DAY 15 29 18 5 27 28 16 15 12 29 8 11 MEAN QFF PRESSURE IN HPA 1015.8 1012.5 1006.4 1007.7 1003.4 999.0 995.4 1002.8 1005.3 1016.0 1020.1 1021.6 1008.8 MAX. QFF PRESSURE IN HPA 1024.4 1023.2 1015.1 1021.8 1009.2 1005.4 1002.0 1011.6 1015.2 1022.2 1026.2 1029.0 1029.0 DAY 21 13 6 2 11 6 30 31 30 26 20 3 MIN. QFF PRESSURE IN HPA 1001.3 995.4 998.3 996.3 995.7 989.6 987.8 997.1 999.4 1010.7 1011.5 1012.2 987.8 DAY 15 29 23 30 27 28 16 5 9 17 9 11 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ESFAHAN (40800) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 32 37 N LONGITUDE 51 40 E DATA PROCESSING CENTER ELEVATION 1550.4 M MEANS AND EXTREMES FOR THE YEAR 1956 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 0600 UTC. MEAN QFE PRESSURE IN HPA 841.5 841.5 838.1 841.5 840.7 839.5 837.6 842.3 842.7 847.3 848.1 847.0 842.3 MAX. QFE PRESSURE IN HPA 848.4 847.1 844.3 846.6 844.9 844.3 842.1 847.8 847.6 851.4 852.8 852.5 852.8 DAY 26 4 5 15 23 6 30 31 30 26 20 3 MIN. QFE PRESSURE IN HPA 830.9 831.0 832.9 834.0 835.5 833.8 832.9 837.8 838.5 842.4 840.7 840.4 830.9 DAY 15 29 24 5 27 28 16 15 12 28 8 11 MEAN QNH PRESSURE IN HPA 1014.3 1014.3 1010.4 1014.4 1013.4 1012.0 1009.8 1015.3 1015.8 1021.1 1022.0 1020.7 1015.3 MAX. QNH PRESSURE IN HPA 1022.3 1020.8 1017.6 1020.3 1018.3 1017.6 1015.0 1021.6 1021.4 1025.8 1027.5 1027.1 1027.5 DAY 26 4 5 15 23 6 30 31 30 26 20 3 MIN. QNH PRESSURE IN HPA 1002.0 1002.1 1004.3 1005.6 1007.3 1005.4 1004.3 1010.0 1010.8 1015.4 1013.4 1013.0 1002.0 DAY 15 29 24 5 27 28 16 15 12 28 8 11 MEAN QFF PRESSURE IN HPA 1016.6 1013.2 1006.8 1007.1 1002.8 998.2 994.6 1002.1 1004.4 1014.9 1020.0 1022.3 1008.6 MAX. QFF PRESSURE IN HPA 1025.0 1023.2 1017.1 1020.0 1008.3 1005.4 1000.7 1010.5 1014.1 1019.9 1025.2 1029.7 1029.7 DAY 21 13 5 2 11 6 30 31 30 26 20 3 MIN. QFF PRESSURE IN HPA 1000.6 996.6 999.2 998.3 994.7 990.0 986.3 996.2 998.2 1008.7 1011.4 1011.7 986.3 DAY 15 29 30 5 27 28 16 15 9 17 8 11 PRESSURE AT HOUR 0900 UTC. MEAN QFE PRESSURE IN HPA 840.3 840.3 836.8 840.3 839.8 838.5 836.9 841.2 841.3 845.8 846.5 845.8 841.1 MAX. QFE PRESSURE IN HPA 847.8 845.8 843.1 845.8 843.7 843.1 841.3 846.7 846.6 849.8 851.5 850.8 851.5 DAY 26 4 6 16 13 6 30 31 30 26 20 2 MIN. QFE PRESSURE IN HPA 830.2 830.4 831.3 833.0 835.0 832.5 832.4 836.5 837.0 840.6 839.0 839.3 830.2 DAY 15 29 24 5 27 28 16 15 12 28 8 10 MEAN QNH PRESSURE IN HPA 1012.9 1013.0 1008.9 1012.9 1012.3 1010.9 1008.9 1013.9 1014.1 1019.4 1020.2 1019.3 1013.9 MAX. QNH PRESSURE IN HPA 1021.6 1019.3 1016.2 1019.3 1016.9 1016.2 1014.1 1020.4 1020.3 1024.0 1026.0 1025.1 1026.0 DAY 26 4 6 16 13 6 30 31 30 26 20 2 MIN. QNH PRESSURE IN HPA 1001.2 1001.4 1002.5 1004.4 1006.8 1003.8 1003.7 1008.5 1009.1 1013.3 1011.4 1011.8 1001.2 DAY 15 29 24 5 27 28 16 15 12 28 8 10 MEAN QFF PRESSURE IN HPA 1013.7 1010.6 1004.4 1004.9 1001.0 996.4 992.9 999.6 1001.6 1011.9 1016.1 1019.5 1006.0 MAX. QFF PRESSURE IN HPA 1022.7 1021.3 1012.7 1016.6 1006.6 1004.1 999.5 1008.3 1012.5 1017.6 1022.2 1027.8 1027.8 DAY 26 13 6 2 11 6 30 31 30 26 20 24 MIN. QFF PRESSURE IN HPA 999.6 996.4 997.3 996.2 993.6 987.9 984.7 992.8 995.1 1007.0 1006.2 1008.4 984.7 DAY 15 29 23 30 27 28 15 15 9 29 8 11 PRESSURE AT HOUR 1200 UTC. MEAN QFE PRESSURE IN HPA 839.4 839.0 835.4 839.2 838.4 837.2 835.6 839.8 839.7 844.4 845.0 844.8 839.8 MAX. QFE PRESSURE IN HPA 846.3 844.7 841.6 845.2 842.2 841.6 839.8 845.5 845.3 848.4 850.8 849.8 850.8 DAY 26 4 6 15 5 6 25 30 30 26 20 2 MIN. QFE PRESSURE IN HPA 830.3 830.3 830.1 832.1 832.8 831.3 831.2 835.3 835.5 839.4 837.9 838.7 830.1 DAY 15 29 24 5 27 28 15 15 23 28 8 10 MEAN QNH PRESSURE IN HPA 1011.9 1011.4 1007.3 1011.6 1010.7 1009.4 1007.4 1012.3 1012.2 1017.7 1018.4 1018.2 1012.4 MAX. QNH PRESSURE IN HPA 1019.9 1018.0 1014.4 1018.6 1015.1 1014.4 1012.3 1019.0 1018.7 1022.3 1025.1 1024.0 1025.1 DAY 26 4 6 15 5 6 25 30 30 26 20 2 MIN. QNH PRESSURE IN HPA 1001.3 1001.3 1001.1 1003.4 1004.2 1002.5 1002.3 1007.1 1007.3 1011.9 1010.1 1011.1 1001.1 DAY 15 29 24 5 27 28 15 15 23 28 8 10 MEAN QFF PRESSURE IN HPA 1013.0 1009.0 1002.8 1003.9 999.6 994.9 991.8 998.4 1000.1 1010.6 1014.7 1018.6 1004.8 MAX. QFF PRESSURE IN HPA 1021.1 1017.5 1011.3 1013.4 1005.8 1002.3 997.5 1006.6 1012.0 1016.2 1022.2 1025.7 1025.7 DAY 20 13 6 2 10 6 30 30 30 26 20 24 MIN. QFF PRESSURE IN HPA 1000.0 994.9 995.8 995.5 991.2 986.3 985.0 992.0 993.9 1004.1 1005.3 1007.4 985.0 DAY 15 29 29 29 25 28 15 15 9 17 8 9 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ESFAHAN (40800) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 32 37 N LONGITUDE 51 40 E DATA PROCESSING CENTER ELEVATION 1550.4 M MEANS AND EXTREMES FOR THE YEAR 1956 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 1500 UTC. MEAN QFE PRESSURE IN HPA 839.8 839.4 835.6 839.4 838.1 836.6 835.2 839.4 839.6 844.3 845.4 845.4 839.9 MAX. QFE PRESSURE IN HPA 846.4 845.3 841.6 845.0 841.5 840.7 839.3 845.1 845.5 848.6 850.6 850.6 850.6 DAY 26 4 6 16 5 6 30 30 30 26 20 2 MIN. QFE PRESSURE IN HPA 831.5 831.5 829.0 832.2 832.6 831.1 831.3 835.1 835.3 839.5 839.0 839.8 829.0 DAY 15 29 29 29 25 28 16 15 23 28 8 10 MEAN QNH PRESSURE IN HPA 1012.4 1011.9 1007.4 1011.9 1010.4 1008.6 1007.0 1011.9 1012.1 1017.6 1018.9 1018.8 1012.4 MAX. QNH PRESSURE IN HPA 1020.0 1018.7 1014.4 1018.4 1014.3 1013.4 1011.8 1018.5 1019.0 1022.6 1024.9 1024.9 1024.9 DAY 26 4 6 16 5 6 30 30 30 26 20 2 MIN. QNH PRESSURE IN HPA 1002.7 1002.7 999.8 1003.5 1004.0 1002.2 1002.5 1006.9 1007.1 1012.0 1011.4 1012.3 999.8 DAY 15 29 29 29 25 28 16 15 23 28 8 10 MEAN QFF PRESSURE IN HPA 1014.9 1011.0 1004.5 1005.6 1000.5 995.4 992.5 999.8 1002.1 1013.2 1017.9 1020.7 1006.5 MAX. QFF PRESSURE IN HPA 1023.5 1019.9 1012.8 1016.5 1006.6 1002.1 998.6 1008.0 1013.6 1019.7 1024.9 1028.0 1028.0 DAY 20 13 6 1 10 6 29 30 30 26 20 13 MIN. QFF PRESSURE IN HPA 1002.7 998.2 996.2 995.4 992.1 986.8 986.5 993.8 996.5 1006.9 1008.8 1011.5 986.5 DAY 15 29 29 29 25 28 16 15 9 17 8 8 PRESSURE AT HOUR 1800 UTC. MEAN QFE PRESSURE IN HPA 840.8 840.3 836.4 840.6 839.5 837.8 836.6 840.4 841.1 845.7 846.5 845.8 841.0 MAX. QFE PRESSURE IN HPA 849.9 846.1 841.8 845.7 842.9 841.6 840.8 846.9 847.1 850.3 850.7 851.6 851.6 DAY 17 4 6 15 5 6 29 30 30 25 20 2 MIN. QFE PRESSURE IN HPA 834.0 834.1 830.3 833.5 834.2 832.2 832.6 836.2 836.8 841.3 840.1 839.4 830.3 DAY 15 29 29 29 27 27 15 29 11 28 8 10 MEAN QNH PRESSURE IN HPA 1013.5 1012.9 1008.4 1013.3 1012.0 1010.0 1008.6 1013.0 1013.8 1019.2 1020.1 1019.3 1013.7 MAX. QNH PRESSURE IN HPA 1024.1 1019.7 1014.7 1019.2 1015.9 1014.4 1013.5 1020.6 1020.8 1024.6 1025.0 1026.1 1026.1 DAY 17 4 6 15 5 6 29 30 30 25 20 2 MIN. QNH PRESSURE IN HPA 1005.6 1005.7 1001.3 1005.0 1005.8 1003.5 1004.0 1008.2 1008.9 1014.1 1012.7 1011.9 1001.3 DAY 15 29 29 29 27 27 15 29 11 28 8 10 MEAN QFF PRESSURE IN HPA 1015.8 1011.6 1004.8 1006.0 1001.2 996.2 993.5 999.9 1002.5 1013.0 1018.0 1020.9 1006.9 MAX. QFF PRESSURE IN HPA 1028.5 1020.8 1012.4 1019.1 1007.4 1002.4 999.5 1009.6 1013.5 1019.3 1022.8 1029.0 1029.0 DAY 17 12 5 1 10 6 29 30 30 26 20 13 MIN. QFF PRESSURE IN HPA 1005.0 1001.6 997.1 996.0 993.1 988.4 986.3 994.4 996.9 1007.4 1010.2 1009.9 986.3 DAY 15 29 29 29 25 27 15 4 11 17 8 10 PRESSURE AT HOUR 2100 UTC. MEAN QFE PRESSURE IN HPA 840.5 840.1 836.5 840.8 839.8 838.2 836.9 840.6 841.3 845.8 846.6 845.7 841.1 MAX. QFE PRESSURE IN HPA 846.7 845.8 842.1 845.7 843.1 841.8 841.1 847.1 847.1 850.1 851.0 851.6 851.6 DAY 26 4 5 15 22 5 29 30 30 25 20 2 MIN. QFE PRESSURE IN HPA 835.2 833.8 831.6 833.2 834.9 832.2 831.8 836.4 837.1 840.6 840.1 839.2 831.6 DAY 13 28 17 29 27 27 15 29 8 28 8 10 MEAN QNH PRESSURE IN HPA 1013.1 1012.7 1008.6 1013.5 1012.3 1010.5 1009.0 1013.3 1014.1 1019.3 1020.3 1019.2 1013.8 MAX. QNH PRESSURE IN HPA 1020.4 1019.3 1015.0 1019.2 1016.2 1014.7 1013.9 1020.8 1020.8 1024.3 1025.4 1026.1 1026.1 DAY 26 4 5 15 22 5 29 30 30 25 20 2 MIN. QNH PRESSURE IN HPA 1007.0 1005.4 1002.8 1004.7 1006.6 1003.5 1003.0 1008.4 1009.2 1013.3 1012.7 1011.6 1002.8 DAY 13 28 17 29 27 27 15 29 8 28 8 10 MEAN QFF PRESSURE IN HPA 1014.1 1010.3 1004.0 1005.4 1001.0 996.2 993.1 999.2 1001.8 1011.9 1016.3 1019.4 1006.1 MAX. QFF PRESSURE IN HPA 1022.6 1020.0 1011.9 1019.2 1007.3 1002.4 999.5 1009.2 1013.7 1017.8 1022.0 1027.6 1027.6 DAY 20 12 5 1 10 5 29 30 30 25 20 24 MIN. QFF PRESSURE IN HPA 1005.4 999.8 997.4 994.0 993.7 987.3 984.0 993.3 995.3 1005.9 1006.4 1007.2 984.0 DAY 28 23 17 29 27 27 15 4 8 28 8 10 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ESFAHAN (40800) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 32 37 N LONGITUDE 51 40 E DATA PROCESSING CENTER ELEVATION 1550.4 M MEANS AND EXTREMES FOR THE YEAR 1957 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AIR TEMPERATURE (C) 1.2 4.8 10.0 12.4 17.9 24.0 26.6 24.7 21.6 15.5 8.3 4.1 14.3 MINIMUN AIR TEMPERATURE (C) -3.5 -1.6 3.5 6.0 10.8 14.9 16.9 15.0 11.7 7.4 2.7 -2.1 6.8 DAYS WITH MINIMUM TEMP. >=21 0 0 0 0 0 0 1 0 0 0 0 0 1 DAYS WITH MINIMUM TEMP. <=-4 16 6 0 0 0 0 0 0 0 0 1 9 32 DAYS WITH FREEZING MIN.<= 0 29 21 5 0 0 0 0 0 0 0 6 23 84 TEMPERATURE RECORDS LOWEST(C) -9.0 -7.0 -1.0 1.0 6.0 10.0 13.0 11.0 9.0 4.0 -5.0 -9.0 -9.0 DAY 25 7 1 5 1 8 8 24 25 14 25 29 MAXIMUM AIR TEMPERATURE (C) 7.1 12.3 17.1 19.2 25.9 32.9 35.7 34.4 31.6 25.0 14.6 10.8 22.2 DAYS WITH MAXIMUM TEMP. >=30 0 0 0 0 3 25 31 31 28 5 0 0 123 DAYS WITH MAXIMUM TEMP. <= 0 0 0 0 0 0 0 0 0 0 0 0 0 0 TEMPERATURE RECORDS HIGHEST(C) 13.0 19.0 21.0 25.0 32.0 37.0 38.0 39.0 34.0 31.0 23.0 17.0 39.0 DAY 31 25 5 19 30 20 18 11 7 2 2 18 DIF. BETWEEN (MAX.-MIN.) (C) 10.6 13.9 13.6 13.2 15.1 18.0 18.8 19.4 19.9 17.6 11.9 12.9 15.4 MEAN DAILY TEMP. (MDT) (C) 1.8 5.4 10.3 12.6 18.4 23.9 26.3 24.7 21.7 16.2 8.6 4.3 14.5 COOLING DEG. DAYS(BASE 21 0C) 0.0 0.0 0.0 0.0 3.0 96.0 165.0 114.5 28.0 0.0 0.0 0.0 406.5 HEATING DEG. DAYS(BASE 18 0C) 502.5 354.0 238.5 162.5 21.0 1.5 0.0 0.0 0.0 68.5 280.5 423.5 2052.5 DEWPOINT (MEAN C) -3.6 -3.9 -0.4 4.3 7.5 8.5 11.8 9.9 10.9 7.1 2.9 -3.7 4.3 MIXING RATIO (G/KG) 3.57 3.52 4.57 6.31 7.93 8.58 10.97 9.36 10.09 7.61 5.73 3.57 6.82 VAPOUR PRESSURE (HPA) 4.79 4.75 6.13 8.45 10.58 11.42 14.50 12.45 13.45 10.23 7.71 4.81 9.11 SATURATION DEF. (HPA) 2.11 4.38 6.79 6.69 10.98 20.40 22.34 20.91 14.03 8.68 3.77 3.80 10.41 RELATIVE HUMIDITY (MEAN %) 73 57 52 62 54 41 43 43 54 61 72 60 56 RELATIVE HUMIDITY (MAX. %) 90 80 74 85 78 66 67 68 78 85 89 83 79 RELATIVE HUMIDITY (MIN. %) 49 33 31 38 31 22 27 23 35 36 51 35 34 RELATIVE HUMIDITY (MEAN% 03UTC) 82 75 70 81 75 63 66 67 77 81 85 79 75 RELATIVE HUMIDITY (MEAN% 09UTC) 57 41 39 44 37 25 30 25 38 39 55 46 40 RELATIVE HUMIDITY (MEAN% 15UTC) 68 48 41 53 44 32 36 35 56 59 67 50 49 RH=0 => RELATIVE HUMIDITY < 0.5% AMOUNT OF PRECIPITATION MM. 42.9 30.0 18.4 58.8 24.0 3.0 0.0 0.0 0.0 9.0 25.0 4.0 215.1 DAYS WITH PRECIPITATION >=10 1 2 0 4 0 0 0 0 0 0 1 0 8 DAYS WITH PRECIPITATION >= 5 3 2 3 4 1 0 0 0 0 0 1 0 14 DAYS WITH PRECIPITATION >= 1 6 3 4 13 7 1 0 0 0 3 6 2 45 DAYS WITH PRECIPITATION 11 4 6 15 13 2 0 0 0 3 13 3 70 GREATEST DAILY PRECIPITATION 23.0 13.0 7.0 11.0 9.0 3.0 0.0 0.0 0.0 4.0 12.0 2.0 23.0 DAY 5 26 16 5 12 2 ** ** ** 12 8 1 DAY WITH THUNDER STORM 0 0 0 3 2 2 0 0 1 1 0 0 9 DAYS WITH SNOW OR SLEET 6 2 1 2 0 0 0 0 0 0 1 0 12 DAYS WITH DUST 0 1 1 1 0 1 2 0 0 2 1 0 9 WIND DIRECTION (PREVAILING) 270 270 270 270 270 90 90 90 90 270 270 270 270 PREVAILING WIND SPEED(KNOTS) 4.4 5.8 7.1 6.2 7.6 5.2 5.4 4.9 5.0 4.8 4.0 4.6 5.7 PREVAILING WIND PERCENT 38.3 48.7 51.8 33.8 42.9 30.4 40.1 46.8 48.3 32.3 31.7 21.4 31.6 CALMS PERCENT OF WIND 4.4 0.4 1.6 1.3 0.0 1.3 0.8 0.0 0.8 1.6 0.8 9.3 1.9 NO. OF WIND OBSERVATION 248 224 247 240 247 240 247 248 240 248 240 248 2917 VECTOR WIND DIRECTION (MEAN) 249 265 254 244 255 70 77 88 92 342 326 264 258 VECTOR WIND MAGNITUDE(KNOTS) 1.2 2.5 4.2 1.4 3.2 1.0 2.4 1.8 1.7 0.8 0.5 0.8 0.6 WIND STEADINESES (MEAN %) 27.9 45.5 60.9 23.7 42.7 16.1 39.3 40.0 37.0 18.2 12.8 21.1 11.3 WIND SPEED (MEAN KNOTS) 4.3 5.5 6.9 5.9 7.5 6.2 6.1 4.5 4.6 4.4 3.9 3.8 5.3 FASTEST WIND DIRECTION 310 270 180 270 230 50 90 90 270 360 360 240 360 FASTEST WIND SPEED (KNOTS) 18 20 37 32 24 25 28 20 14 40 18 20 40 DAY 12 26 14 26 26 27 23 16 2 23 3 20 DAYS WITH SKY CLEAR (0-2)/8 8 19 10 8 9 28 29 27 27 22 7 18 212 DAYS WITH P.CLOUDY (3-6)/8 11 5 12 12 16 2 2 4 3 7 15 10 99 DAYS WITH CLOUDY (7-8)/8 12 4 9 10 6 0 0 0 0 2 8 3 54 DAYS WITH VISIBILITY =< 2 KM 5 1 3 3 0 2 2 0 1 2 1 1 21 DURATION OF SUNSHINE HOURS ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ESFAHAN (40800) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 32 37 N LONGITUDE 51 40 E DATA PROCESSING CENTER ELEVATION 1550.4 M MEANS AND EXTREMES FOR THE YEAR 1957 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL MEAN QFE PRESSURE IN HPA 841.1 843.6 841.3 841.7 841.6 839.7 838.0 840.4 843.8 846.1 845.2 844.0 842.2 MAX. QFE PRESSURE IN HPA 849.0 851.6 848.5 854.5 846.7 843.9 845.3 847.0 847.9 851.7 851.6 850.9 854.5 DAY-HOUR 14- 6 8- 6 22- 6 15- 3 11- 9 18- 6 29- 6 18- 0 22- 6 30- 6 24- 6 11- 6 MIN. QFE PRESSURE IN HPA 830.0 835.3 833.1 835.8 836.6 833.3 831.7 832.0 831.0 838.4 836.2 836.5 830.0 DAY-HOUR 19-18 11-12 14-12 3-12 21-15 6-15 12-15 8-15 10-15 30-15 18-12 7- 0 MEAN QNH PRESSURE IN HPA 1013.9 1016.7 1014.1 1014.6 1014.4 1012.2 1010.3 1013.1 1017.0 1019.7 1018.6 1017.2 1015.1 MAX. QNH PRESSURE IN HPA 1023.0 1026.1 1022.5 1029.4 1020.4 1017.1 1018.7 1020.7 1021.8 1026.2 1026.1 1025.3 1029.4 DAY-HOUR 14- 6 8- 6 22- 6 15- 3 11- 9 18- 6 29- 6 18- 0 22- 6 30- 6 24- 6 11- 6 MIN. QNH PRESSURE IN HPA 1000.9 1007.1 1004.5 1007.7 1008.6 1004.8 1002.9 1003.3 1002.1 1010.7 1008.2 1008.5 1000.9 DAY-HOUR 19-18 11-12 14-12 3-12 21-15 6-15 12-15 8-15 10-15 30-15 18-12 7- 0 MEAN QFF PRESSURE IN HPA 1016.1 1016.6 1010.3 1009.1 1005.4 999.4 995.7 999.8 1005.6 1012.2 1016.0 1017.5 1008.7 MAX. QFF PRESSURE IN HPA 1028.6 1030.5 1021.3 1023.9 1011.0 1006.9 1005.6 1008.0 1012.6 1020.4 1028.8 1028.5 1030.5 DAY-HOUR 26- 6 8- 6 2- 6 15- 3 10- 6 8- 6 30- 3 18- 0 30- 3 31- 3 24- 6 30- 6 MIN. QFF PRESSURE IN HPA 1000.5 1003.8 1000.4 1002.7 999.3 992.8 988.2 988.1 990.7 1004.0 1003.8 1005.1 988.1 DAY-HOUR 31-12 27- 0 7- 9 28- 9 19-12 28-12 12-12 8-21 10-15 3-12 18-12 7- 0 PRESSURE AT HOUR 0000 UTC. MEAN QFE PRESSURE IN HPA 841.2 843.4 841.6 841.5 841.6 839.9 838.2 840.8 844.0 846.2 845.3 843.9 842.3 MAX. QFE PRESSURE IN HPA 848.4 849.9 847.3 847.7 845.7 842.6 844.3 847.0 846.3 850.4 850.1 849.5 850.4 DAY 14 8 2 17 29 18 30 18 10 19 24 11 MIN. QFE PRESSURE IN HPA 831.0 835.3 835.9 836.2 839.0 835.6 833.7 833.9 841.0 842.6 839.3 836.5 831.0 DAY 20 27 7 1 21 7 13 9 28 4 18 7 MEAN QNH PRESSURE IN HPA 1013.9 1016.6 1014.4 1014.4 1014.5 1012.5 1010.5 1013.5 1017.2 1019.8 1018.8 1017.1 1015.3 MAX. QNH PRESSURE IN HPA 1022.3 1024.1 1021.1 1021.5 1019.2 1015.6 1017.6 1020.7 1019.9 1024.7 1024.3 1023.6 1024.7 DAY 14 8 2 17 29 18 30 18 10 19 24 11 MIN. QNH PRESSURE IN HPA 1002.1 1007.1 1007.8 1008.2 1011.4 1007.5 1005.2 1005.5 1013.7 1015.6 1011.8 1008.5 1002.1 DAY 20 27 7 1 21 7 13 9 28 4 18 7 MEAN QFF PRESSURE IN HPA 1015.5 1015.6 1010.3 1008.7 1005.4 999.6 995.8 999.8 1005.3 1011.8 1015.7 1016.7 1008.3 MAX. QFF PRESSURE IN HPA 1025.7 1027.2 1019.0 1015.8 1009.2 1005.6 1003.6 1008.0 1007.4 1017.7 1026.0 1025.6 1027.2 DAY 25 8 2 17 10 8 30 18 23 31 24 30 MIN. QFF PRESSURE IN HPA 1002.9 1003.8 1000.4 1003.2 1001.3 995.9 989.8 989.5 1002.0 1005.0 1006.1 1005.1 989.5 DAY 20 27 7 28 22 30 16 9 28 11 18 7 PRESSURE AT HOUR 0300 UTC. MEAN QFE PRESSURE IN HPA 841.4 843.6 841.9 842.4 842.3 840.6 839.1 841.4 844.7 846.9 845.7 844.3 842.9 MAX. QFE PRESSURE IN HPA 848.1 850.6 847.6 854.5 846.6 843.6 844.8 845.2 846.9 850.8 850.4 849.8 854.5 DAY 14 8 2 15 11 19 30 4 22 19 24 11 MIN. QFE PRESSURE IN HPA 831.7 835.5 835.5 837.4 839.5 835.6 834.4 835.7 841.4 843.5 839.0 837.1 831.7 DAY 20 5 7 1 21 7 13 9 28 4 18 7 MEAN QNH PRESSURE IN HPA 1014.2 1016.8 1014.8 1015.3 1015.3 1013.2 1011.5 1014.2 1018.1 1020.5 1019.2 1017.6 1015.9 MAX. QNH PRESSURE IN HPA 1022.0 1024.9 1021.4 1029.4 1020.3 1016.8 1018.2 1018.6 1020.6 1025.1 1024.7 1024.0 1029.4 DAY 14 8 2 15 11 19 30 4 22 19 24 11 MIN. QNH PRESSURE IN HPA 1002.9 1007.3 1007.3 1009.6 1012.0 1007.5 1006.1 1007.6 1014.2 1016.6 1011.4 1009.2 1002.9 DAY 20 5 7 1 21 7 13 9 28 4 18 7 MEAN QFF PRESSURE IN HPA 1017.1 1017.7 1011.9 1010.8 1007.2 1001.2 998.0 1002.2 1008.7 1014.8 1017.7 1018.8 1010.5 MAX. QFF PRESSURE IN HPA 1028.3 1030.1 1020.7 1023.9 1010.9 1006.7 1005.6 1006.8 1012.6 1020.4 1027.9 1027.9 1030.1 DAY 25 8 2 15 10 8 30 4 30 31 24 30 MIN. QFF PRESSURE IN HPA 1005.1 1008.0 1000.8 1004.5 1002.7 997.3 991.6 993.7 1004.9 1008.0 1007.7 1007.6 991.6 DAY 20 27 7 28 21 7 16 14 28 9 18 7 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ESFAHAN (40800) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 32 37 N LONGITUDE 51 40 E DATA PROCESSING CENTER ELEVATION 1550.4 M MEANS AND EXTREMES FOR THE YEAR 1957 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 0600 UTC. MEAN QFE PRESSURE IN HPA 842.3 844.9 842.7 842.7 842.6 840.8 839.3 841.9 845.4 847.7 846.6 845.4 843.5 MAX. QFE PRESSURE IN HPA 849.0 851.6 848.5 848.8 846.5 843.9 845.3 845.7 847.9 851.7 851.6 850.9 851.7 DAY 14 8 22 17 11 18 29 4 22 30 24 11 MIN. QFE PRESSURE IN HPA 831.5 836.3 836.7 837.7 839.7 835.1 834.3 835.9 842.4 843.9 838.9 839.7 831.5 DAY 19 5 14 4 21 7 12 8 28 10 18 7 MEAN QNH PRESSURE IN HPA 1015.2 1018.3 1015.7 1015.8 1015.6 1013.5 1011.8 1014.8 1018.8 1021.5 1020.2 1018.9 1016.7 MAX. QNH PRESSURE IN HPA 1023.0 1026.1 1022.5 1022.8 1020.1 1017.1 1018.7 1019.2 1021.8 1026.2 1026.1 1025.3 1026.2 DAY 14 8 22 17 11 18 29 4 22 30 24 11 MIN. QNH PRESSURE IN HPA 1002.7 1008.3 1008.7 1009.9 1012.2 1006.9 1005.9 1007.8 1015.4 1017.1 1011.3 1012.2 1002.7 DAY 19 5 14 4 21 7 12 8 28 10 18 7 MEAN QFF PRESSURE IN HPA 1018.2 1018.9 1012.2 1010.4 1006.6 1000.7 997.2 1001.6 1007.5 1014.2 1017.9 1019.7 1010.4 MAX. QFF PRESSURE IN HPA 1028.6 1030.5 1021.3 1017.1 1011.0 1006.9 1005.3 1006.2 1010.4 1020.0 1028.8 1028.5 1030.5 DAY 26 8 2 17 10 8 5 22 9 31 24 30 MIN. QFF PRESSURE IN HPA 1004.5 1009.1 1004.3 1005.0 1002.5 994.8 990.7 992.4 1004.3 1006.8 1006.4 1010.3 990.7 DAY 19 11 7 28 21 6 12 9 15 9 18 7 PRESSURE AT HOUR 0900 UTC. MEAN QFE PRESSURE IN HPA 841.2 843.9 841.5 841.8 841.6 839.8 838.5 840.8 844.2 846.2 845.3 844.1 842.4 MAX. QFE PRESSURE IN HPA 847.6 850.1 847.7 847.4 846.7 842.7 844.6 844.5 846.5 850.0 850.1 848.7 850.1 DAY 14 8 2 17 11 18 29 4 9 30 24 11 MIN. QFE PRESSURE IN HPA 831.2 835.9 834.8 836.7 838.5 835.7 833.5 834.7 841.4 842.2 837.8 838.6 831.2 DAY 19 11 14 3 21 5 12 8 28 3 18 20 MEAN QNH PRESSURE IN HPA 1013.9 1017.1 1014.4 1014.7 1014.5 1012.3 1010.8 1013.5 1017.5 1019.8 1018.8 1017.3 1015.4 MAX. QNH PRESSURE IN HPA 1021.4 1024.3 1021.5 1021.2 1020.4 1015.7 1017.9 1017.8 1020.1 1024.2 1024.3 1022.7 1024.3 DAY 14 8 2 17 11 18 29 4 9 30 24 11 MIN. QNH PRESSURE IN HPA 1002.3 1007.8 1006.5 1008.7 1010.8 1007.6 1005.0 1006.4 1014.2 1015.1 1010.0 1010.9 1002.3 DAY 19 11 14 3 21 5 12 8 28 3 18 20 MEAN QFF PRESSURE IN HPA 1015.5 1016.2 1009.9 1008.7 1004.8 999.1 995.7 999.6 1004.8 1011.3 1015.4 1016.8 1008.1 MAX. QFF PRESSURE IN HPA 1025.3 1026.8 1019.2 1015.1 1009.6 1005.2 1003.5 1004.6 1007.5 1017.4 1026.5 1025.0 1026.8 DAY 25 8 1 5 11 8 5 4 22 31 24 30 MIN. QFF PRESSURE IN HPA 1001.1 1005.5 1000.4 1002.7 1000.8 994.6 989.3 990.7 1001.9 1004.4 1004.4 1009.1 989.3 DAY 31 11 7 28 19 29 12 9 15 3 18 7 PRESSURE AT HOUR 1200 UTC. MEAN QFE PRESSURE IN HPA 840.1 842.5 839.9 840.6 840.3 838.7 836.8 839.1 842.5 844.7 844.0 842.8 841.0 MAX. QFE PRESSURE IN HPA 846.3 848.4 846.0 846.7 844.6 841.4 843.0 842.7 845.1 848.0 848.6 848.5 848.6 DAY 14 8 2 16 11 17 29 4 9 30 24 12 MIN. QFE PRESSURE IN HPA 831.0 835.3 833.1 835.8 837.0 833.6 831.8 832.6 840.0 841.2 836.2 837.5 831.0 DAY 19 11 14 3 21 6 12 8 28 10 18 20 MEAN QNH PRESSURE IN HPA 1012.7 1015.5 1012.5 1013.3 1012.9 1011.1 1008.9 1011.5 1015.5 1018.0 1017.2 1015.9 1013.7 MAX. QNH PRESSURE IN HPA 1019.9 1022.3 1019.6 1020.4 1017.9 1014.2 1016.1 1015.7 1018.5 1021.9 1022.6 1022.5 1022.6 DAY 14 8 2 16 11 17 29 4 9 30 24 12 MIN. QNH PRESSURE IN HPA 1002.1 1007.1 1004.5 1007.7 1009.1 1005.1 1003.0 1004.0 1012.6 1014.0 1008.2 1009.7 1002.1 DAY 19 11 14 3 21 6 12 8 28 10 18 20 MEAN QFF PRESSURE IN HPA 1014.1 1014.5 1008.3 1007.6 1003.6 998.1 993.8 997.8 1003.2 1010.0 1014.1 1015.5 1006.7 MAX. QFF PRESSURE IN HPA 1023.4 1024.3 1017.0 1013.9 1007.4 1003.8 1001.9 1002.8 1005.9 1015.8 1024.3 1023.0 1024.3 DAY 25 7 1 16 11 8 30 4 9 31 24 30 MIN. QFF PRESSURE IN HPA 1000.5 1006.1 1000.9 1003.4 999.3 992.8 988.2 988.6 1000.6 1004.0 1003.8 1008.7 988.2 DAY 31 11 7 3 19 28 12 13 15 3 18 20 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ESFAHAN (40800) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 32 37 N LONGITUDE 51 40 E DATA PROCESSING CENTER ELEVATION 1550.4 M MEANS AND EXTREMES FOR THE YEAR 1957 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 1500 UTC. MEAN QFE PRESSURE IN HPA 840.6 843.0 840.1 840.8 840.5 838.3 836.4 838.7 842.0 844.7 844.4 843.4 841.1 MAX. QFE PRESSURE IN HPA 847.7 848.8 846.1 846.5 845.2 840.9 842.8 842.3 844.5 848.0 848.8 849.2 849.2 DAY 14 7 2 16 28 17 29 4 9 20 24 12 MIN. QFE PRESSURE IN HPA 830.7 836.8 833.1 836.4 836.6 833.3 831.7 832.0 831.0 838.4 838.2 838.4 830.7 DAY 19 26 31 3 21 6 12 8 10 30 18 20 MEAN QNH PRESSURE IN HPA 1013.2 1016.1 1012.6 1013.5 1013.1 1010.6 1008.4 1011.1 1014.9 1018.0 1017.7 1016.5 1013.8 MAX. QNH PRESSURE IN HPA 1021.5 1022.8 1019.7 1020.1 1018.6 1013.6 1015.8 1015.3 1017.8 1021.9 1022.8 1023.3 1023.3 DAY 14 7 2 16 28 17 29 4 9 20 24 12 MIN. QNH PRESSURE IN HPA 1001.8 1008.9 1004.5 1008.4 1008.6 1004.8 1002.9 1003.3 1002.1 1010.7 1010.5 1010.7 1001.8 DAY 19 26 31 3 21 6 12 8 10 30 18 20 MEAN QFF PRESSURE IN HPA 1016.0 1016.9 1009.6 1008.9 1004.9 998.5 994.6 998.9 1004.9 1012.0 1016.0 1017.7 1008.2 MAX. QFF PRESSURE IN HPA 1026.1 1027.9 1018.9 1014.7 1009.4 1003.8 1003.1 1003.5 1010.9 1017.9 1025.6 1025.8 1027.9 DAY 25 7 1 16 28 8 30 4 29 31 24 29 MIN. QFF PRESSURE IN HPA 1003.6 1005.9 1001.0 1004.4 999.5 993.7 988.6 989.9 990.7 1005.2 1007.8 1010.2 988.6 DAY 19 26 31 26 21 23 16 13 10 30 18 20 PRESSURE AT HOUR 1800 UTC. MEAN QFE PRESSURE IN HPA 841.2 843.7 841.2 842.0 841.9 839.5 837.8 840.3 843.7 846.2 845.2 844.1 842.2 MAX. QFE PRESSURE IN HPA 848.5 849.6 847.3 847.8 846.0 841.9 844.5 843.7 845.8 849.8 850.1 847.8 850.1 DAY 14 7 2 16 28 10 29 4 9 20 23 10 MIN. QFE PRESSURE IN HPA 830.0 836.2 834.8 837.3 838.1 835.2 833.3 833.4 841.0 842.1 840.1 838.7 830.0 DAY 19 26 31 3 21 6 12 8 27 22 17 20 MEAN QNH PRESSURE IN HPA 1013.9 1016.9 1014.0 1014.9 1014.8 1012.0 1010.0 1012.9 1016.9 1019.8 1018.6 1017.3 1015.2 MAX. QNH PRESSURE IN HPA 1022.5 1023.7 1021.1 1021.6 1019.6 1014.8 1017.8 1016.9 1019.3 1024.0 1024.3 1021.6 1024.3 DAY 14 7 2 16 28 10 29 4 9 20 23 10 MIN. QNH PRESSURE IN HPA 1000.9 1008.2 1006.5 1009.4 1010.4 1007.0 1004.8 1004.9 1013.7 1015.0 1012.7 1011.1 1000.9 DAY 19 26 31 3 21 6 12 8 27 22 17 20 MEAN QFF PRESSURE IN HPA 1016.8 1017.4 1010.4 1009.5 1005.7 999.2 995.5 999.7 1005.6 1012.4 1016.2 1018.2 1008.9 MAX. QFF PRESSURE IN HPA 1026.9 1028.3 1020.3 1015.4 1010.1 1005.4 1003.7 1004.1 1009.5 1017.3 1026.5 1026.2 1028.3 DAY 25 7 1 16 11 8 30 22 30 30 23 29 MIN. QFF PRESSURE IN HPA 1002.3 1005.3 1002.1 1004.5 1000.4 994.0 989.1 990.3 1002.6 1005.1 1007.7 1009.7 989.1 DAY 19 26 31 24 21 5 15 8 27 9 17 20 PRESSURE AT HOUR 2100 UTC. MEAN QFE PRESSURE IN HPA 841.2 843.7 841.5 842.0 841.9 839.8 838.2 840.5 844.0 846.3 845.2 844.0 842.4 MAX. QFE PRESSURE IN HPA 848.6 850.2 847.7 848.3 846.0 842.9 844.1 844.2 846.0 850.0 850.3 848.1 850.3 DAY 13 7 2 16 10 10 29 3 9 29 23 10 MIN. QFE PRESSURE IN HPA 830.8 835.6 836.1 837.5 838.8 835.0 833.4 832.8 841.2 842.7 840.8 837.0 830.8 DAY 19 26 31 3 20 6 12 8 27 8 17 6 MEAN QNH PRESSURE IN HPA 1014.0 1016.9 1014.3 1014.9 1014.8 1012.4 1010.5 1013.2 1017.2 1019.9 1018.6 1017.2 1015.3 MAX. QNH PRESSURE IN HPA 1022.6 1024.4 1021.5 1022.2 1019.6 1015.9 1017.3 1017.5 1019.6 1024.2 1024.6 1022.0 1024.6 DAY 13 7 2 16 10 10 29 3 9 29 23 10 MIN. QNH PRESSURE IN HPA 1001.9 1007.5 1008.0 1009.7 1011.2 1006.8 1004.9 1004.2 1014.0 1015.7 1013.5 1009.1 1001.9 DAY 19 26 31 3 20 6 12 8 27 8 17 6 MEAN QFF PRESSURE IN HPA 1015.5 1016.0 1009.8 1008.8 1005.1 999.2 995.5 999.2 1004.9 1011.5 1015.3 1016.8 1008.1 MAX. QFF PRESSURE IN HPA 1025.4 1027.8 1019.2 1015.4 1009.2 1004.6 1003.2 1003.9 1008.7 1016.7 1025.6 1024.9 1027.8 DAY 25 7 1 16 11 10 30 21 30 30 24 29 MIN. QFF PRESSURE IN HPA 1002.3 1004.1 1000.5 1003.7 1000.7 994.1 989.2 988.1 1001.4 1004.2 1007.8 1006.5 988.1 DAY 19 26 6 27 31 28 11 8 27 3 17 6 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ESFAHAN (40800) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 32 37 N LONGITUDE 51 40 E DATA PROCESSING CENTER ELEVATION 1550.4 M MEANS AND EXTREMES FOR THE YEAR 1958 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AIR TEMPERATURE (C) 4.8 5.7 13.4 18.7 21.3 26.5 29.5 29.1 24.3 17.4 6.9 5.2 16.9 MINIMUN AIR TEMPERATURE (C) -1.9 -1.0 6.5 10.5 13.9 18.3 21.4 20.5 15.2 8.8 1.1 -0.4 9.4 DAYS WITH MINIMUM TEMP. >=21 0 0 0 0 0 5 22 15 0 0 0 0 42 DAYS WITH MINIMUM TEMP. <=-4 11 7 0 0 0 0 0 0 0 0 8 5 31 DAYS WITH FREEZING MIN.<= 0 23 21 0 0 0 0 0 0 0 0 14 19 77 TEMPERATURE RECORDS LOWEST(C) -6.0 -7.0 2.0 4.0 9.0 15.0 15.0 17.0 11.0 4.0 -8.0 -8.0 -8.0 DAY 1 8 1 7 2 3 17 28 26 31 23 12 MAXIMUM AIR TEMPERATURE (C) 11.9 12.8 20.4 26.7 28.7 34.1 37.1 36.7 32.7 25.5 13.4 11.0 24.2 DAYS WITH MAXIMUM TEMP. >=30 0 0 0 4 11 30 31 31 21 2 0 0 130 DAYS WITH MAXIMUM TEMP. <= 0 0 0 0 0 0 0 0 0 0 0 0 0 0 TEMPERATURE RECORDS HIGHEST(C) 18.0 19.0 23.0 31.0 33.0 38.0 40.0 39.0 38.0 31.0 22.0 15.0 40.0 DAY 14 22 14 20 16 29 3 12 5 3 5 9 DIF. BETWEEN (MAX.-MIN.) (C) 13.8 13.8 13.9 16.2 14.8 15.8 15.7 16.2 17.5 16.7 12.3 11.4 14.8 MEAN DAILY TEMP. (MDT) (C) 5.0 5.9 13.4 18.6 21.3 26.2 29.2 28.6 24.0 17.1 7.3 5.3 16.8 COOLING DEG. DAYS(BASE 21 0C) 0.0 0.0 0.0 6.5 31.5 155.0 255.5 236.0 97.0 0.0 0.0 0.0 781.5 HEATING DEG. DAYS(BASE 18 0C) 403.0 339.5 141.5 23.0 0.0 0.0 0.0 0.0 0.0 46.0 322.0 392.5 1667.5 DEWPOINT (MEAN C) -4.0 -1.0 3.3 3.6 6.4 9.2 9.5 8.2 1.0 -2.1 -5.6 -0.6 2.3 MIXING RATIO (G/KG) 3.56 4.54 6.26 6.64 7.60 9.35 9.84 8.74 5.39 4.18 3.21 4.51 6.15 VAPOUR PRESSURE (HPA) 4.78 6.09 8.36 8.85 10.16 12.36 12.94 11.56 7.20 5.63 4.34 6.05 8.19 SATURATION DEF. (HPA) 4.23 3.61 7.60 13.74 16.14 23.78 29.98 30.31 24.96 15.41 6.38 3.10 14.94 RELATIVE HUMIDITY (MEAN %) 57 65 56 42 42 37 31 29 25 30 46 69 44 RELATIVE HUMIDITY (MAX. %) 80 84 76 61 62 54 44 43 43 48 70 87 63 RELATIVE HUMIDITY (MIN. %) 37 46 38 26 26 23 19 18 14 16 26 50 28 RELATIVE HUMIDITY (MEAN% 03UTC) 73 78 70 57 57 51 39 41 37 44 59 80 57 RELATIVE HUMIDITY (MEAN% 09UTC) 45 56 45 34 33 30 27 25 18 22 33 54 35 RELATIVE HUMIDITY (MEAN% 15UTC) 45 54 47 34 34 31 27 24 20 23 36 65 37 RH=0 => RELATIVE HUMIDITY < 0.5% AMOUNT OF PRECIPITATION MM. 3.3 15.0 10.3 0.0 6.1 10.0 0.0 0.0 0.0 0.9 4.0 15.6 65.2 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 1 0 0 0 0 0 1 3 DAYS WITH PRECIPITATION >= 1 2 1 6 0 3 3 0 0 0 0 1 4 20 DAYS WITH PRECIPITATION 3 2 8 0 6 3 0 0 0 3 3 9 37 GREATEST DAILY PRECIPITATION 2.2 15.0 3.3 0.0 4.0 5.0 0.0 0.0 0.0 0.6 3.3 8.0 15.0 DAY 30 14 7 ** 23 15 ** ** ** 14 30 31 DAY WITH THUNDER STORM 0 0 0 0 6 1 1 0 0 0 0 0 8 DAYS WITH SNOW OR SLEET 1 1 0 0 0 0 0 0 0 0 1 0 3 DAYS WITH DUST 1 0 1 4 7 0 0 2 1 2 0 0 18 WIND DIRECTION (PREVAILING) 270 270 270 270 270 270 270 45 270 270 135 270 270 PREVAILING WIND SPEED(KNOTS) 6.2 5.8 9.1 9.6 8.8 7.0 7.3 3.8 4.3 5.5 5.4 3.8 6.9 PREVAILING WIND PERCENT 29.6 34.1 53.4 50.8 42.3 37.1 24.6 27.4 23.8 32.7 20.4 25.4 32.4 CALMS PERCENT OF WIND 11.3 14.3 6.1 3.8 7.3 5.4 2.8 2.0 11.3 11.7 14.6 24.6 9.6 NO. OF WIND OBSERVATION 247 223 247 240 248 240 248 248 240 248 240 248 2917 VECTOR WIND DIRECTION (MEAN) 246 268 264 272 292 284 34 95 23 241 120 259 269 VECTOR WIND MAGNITUDE(KNOTS) 2.7 1.7 5.1 5.4 3.8 2.5 0.6 2.3 0.2 1.2 1.0 0.7 1.6 WIND STEADINESES (MEAN %) 50.0 41.5 70.8 72.0 52.1 47.2 10.5 46.9 5.3 25.0 26.3 24.1 30.8 WIND SPEED (MEAN KNOTS) 5.4 4.1 7.2 7.5 7.3 5.3 5.7 4.9 3.8 4.8 3.8 2.9 5.2 FASTEST WIND DIRECTION 230 230 270 270 270 360 270 130 50 230 270 130 270 FASTEST WIND SPEED (KNOTS) 25 23 30 40 35 32 20 20 20 30 20 13 40 DAY 5 23 14 20 4 15 2 14 24 13 21 9 DAYS WITH SKY CLEAR (0-2)/8 12 19 17 11 14 27 26 29 30 26 16 12 239 DAYS WITH P.CLOUDY (3-6)/8 12 6 9 11 15 3 4 2 0 5 8 6 81 DAYS WITH CLOUDY (7-8)/8 7 3 5 8 2 0 1 0 0 0 6 13 45 DAYS WITH VISIBILITY =< 2 KM 0 1 0 3 3 1 0 1 1 0 1 0 11 DURATION OF SUNSHINE HOURS ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ESFAHAN (40800) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 32 37 N LONGITUDE 51 40 E DATA PROCESSING CENTER ELEVATION 1550.4 M MEANS AND EXTREMES FOR THE YEAR 1958 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL MEAN QFE PRESSURE IN HPA 841.4 842.0 840.2 840.5 842.0 837.0 834.5 836.4 838.8 843.2 845.3 842.6 840.3 MAX. QFE PRESSURE IN HPA 848.9 849.4 845.9 847.7 851.5 843.4 848.0 842.3 847.9 850.0 852.0 855.0 855.0 DAY-HOUR 13- 6 25- 6 8- 6 2- 6 13- 6 1-18 15- 6 25- 6 7- 6 22- 6 4- 6 7- 9 MIN. QFE PRESSURE IN HPA 830.4 833.7 832.9 834.0 836.0 831.2 823.1 830.2 832.8 836.9 838.2 834.7 823.1 DAY-HOUR 30-12 5-12 9-12 20-12 1-12 20-12 9-18 7-15 4-15 15-12 21-12 11-15 MEAN QNH PRESSURE IN HPA 1014.2 1014.9 1012.8 1013.1 1014.9 1009.0 1006.2 1008.4 1011.2 1016.3 1018.8 1015.6 1013.0 MAX. QNH PRESSURE IN HPA 1022.9 1023.5 1019.4 1021.5 1026.0 1016.5 1021.9 1015.3 1021.8 1024.2 1026.5 1030.0 1030.0 DAY-HOUR 13- 6 25- 6 8- 6 2- 6 13- 6 1-18 15- 6 25- 6 7- 6 22- 6 4- 6 7- 9 MIN. QNH PRESSURE IN HPA 1001.4 1005.2 1004.3 1005.6 1007.9 1002.3 992.9 1001.2 1004.2 1009.0 1010.5 1006.4 992.9 DAY-HOUR 30-12 5-12 9-12 20-12 1-12 20-12 9-18 7-15 4-15 15-12 21-12 11-15 MEAN QFF PRESSURE IN HPA 1014.0 1014.1 1006.7 1003.8 1003.9 994.8 990.1 992.6 998.5 1008.0 1017.4 1015.1 1004.9 MAX. QFF PRESSURE IN HPA 1025.5 1024.0 1015.8 1013.1 1015.8 1006.4 1008.8 999.7 1008.3 1017.7 1030.3 1028.3 1030.3 DAY-HOUR 2- 6 7- 6 8- 6 25- 3 13- 6 2- 3 15- 6 25- 6 7- 6 23- 3 23- 6 7- 9 MIN. QFF PRESSURE IN HPA 997.8 1003.6 997.1 993.2 995.6 984.9 976.6 985.5 989.3 997.7 1004.8 1005.1 976.6 DAY-HOUR 30-12 24-12 24-12 20- 9 1-12 20-12 9-18 12-12 3-12 9-12 7- 0 9-21 PRESSURE AT HOUR 0000 UTC. MEAN QFE PRESSURE IN HPA 841.6 841.7 840.2 840.6 842.0 837.4 834.7 836.5 838.9 843.2 845.4 842.5 840.4 MAX. QFE PRESSURE IN HPA 847.4 847.0 844.4 845.5 848.9 842.7 841.5 840.4 843.6 848.6 849.4 848.5 849.4 DAY 13 19 1 2 14 2 16 25 28 23 4 5 MIN. QFE PRESSURE IN HPA 835.1 835.5 834.8 835.7 837.4 832.8 825.0 833.0 834.4 839.7 840.1 837.2 825.0 DAY 30 3 25 20 1 21 10 7 4 10 7 1 MEAN QNH PRESSURE IN HPA 1014.5 1014.6 1012.8 1013.2 1014.9 1009.5 1006.4 1008.5 1011.3 1016.3 1018.8 1015.5 1013.0 MAX. QNH PRESSURE IN HPA 1021.2 1020.7 1017.7 1019.0 1022.9 1015.7 1014.3 1013.0 1016.8 1022.6 1023.5 1022.5 1023.5 DAY 13 19 1 2 14 2 16 25 28 23 4 5 MIN. QNH PRESSURE IN HPA 1006.9 1007.3 1006.5 1007.6 1009.6 1004.2 995.1 1004.4 1006.1 1012.2 1012.7 1009.3 995.1 DAY 30 3 25 20 1 21 10 7 4 10 7 1 MEAN QFF PRESSURE IN HPA 1013.6 1013.3 1006.3 1003.8 1003.8 995.2 990.2 992.5 998.2 1007.4 1016.8 1014.4 1004.6 MAX. QFF PRESSURE IN HPA 1021.4 1018.6 1013.8 1011.0 1013.1 1004.8 1000.9 996.5 1006.1 1014.8 1026.8 1021.4 1026.8 DAY 20 8 1 25 14 2 16 26 28 23 23 5 MIN. QFF PRESSURE IN HPA 1003.2 1005.3 998.2 996.0 997.2 988.2 978.6 987.3 990.0 1002.3 1004.8 1007.4 978.6 DAY 30 3 25 20 1 20 10 12 3 10 7 10 PRESSURE AT HOUR 0300 UTC. MEAN QFE PRESSURE IN HPA 841.9 842.3 840.7 841.1 842.4 838.1 835.6 837.4 839.6 844.0 845.9 842.7 841.0 MAX. QFE PRESSURE IN HPA 847.5 847.7 844.6 846.2 849.1 843.2 841.8 841.5 843.7 849.1 850.1 848.7 850.1 DAY 13 26 8 2 14 2 16 25 30 23 4 5 MIN. QFE PRESSURE IN HPA 835.2 836.0 835.1 835.9 838.3 834.0 826.6 833.9 835.5 840.0 840.1 835.3 826.6 DAY 30 3 25 20 1 20 10 13 4 10 30 1 MEAN QNH PRESSURE IN HPA 1014.8 1015.3 1013.4 1013.9 1015.4 1010.4 1007.4 1009.6 1012.1 1017.2 1019.4 1015.8 1013.7 MAX. QNH PRESSURE IN HPA 1021.3 1021.5 1017.9 1019.8 1023.2 1016.3 1014.7 1014.3 1016.9 1023.2 1024.3 1022.7 1024.3 DAY 13 26 8 2 14 2 16 25 30 23 4 5 MIN. QNH PRESSURE IN HPA 1007.0 1007.9 1006.9 1007.8 1010.6 1005.6 997.0 1005.5 1007.3 1012.6 1012.7 1007.1 997.0 DAY 30 3 25 20 1 20 10 13 4 10 30 1 MEAN QFF PRESSURE IN HPA 1015.5 1015.4 1008.2 1005.7 1005.3 996.8 992.1 994.7 1000.5 1010.1 1018.7 1015.9 1006.6 MAX. QFF PRESSURE IN HPA 1023.7 1020.2 1014.8 1013.1 1014.3 1006.4 1002.0 999.6 1007.4 1017.7 1030.2 1022.9 1030.2 DAY 20 19 8 25 14 2 16 25 30 23 23 5 MIN. QFF PRESSURE IN HPA 1003.8 1007.5 1000.1 997.1 1000.6 990.3 982.3 989.6 994.7 1004.0 1006.7 1005.1 982.3 DAY 30 3 25 20 1 20 10 13 4 10 7 1 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ESFAHAN (40800) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 32 37 N LONGITUDE 51 40 E DATA PROCESSING CENTER ELEVATION 1550.4 M MEANS AND EXTREMES FOR THE YEAR 1958 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 0600 UTC. MEAN QFE PRESSURE IN HPA 843.1 843.9 841.8 841.9 843.3 838.3 836.3 838.2 840.8 845.1 847.0 843.8 842.0 MAX. QFE PRESSURE IN HPA 848.9 849.4 845.9 847.7 851.5 843.4 848.0 842.3 847.9 850.0 852.0 850.3 852.0 DAY 13 25 8 2 13 2 15 25 7 22 4 5 MIN. QFE PRESSURE IN HPA 834.7 837.7 836.4 836.5 838.8 832.2 828.9 835.0 836.4 841.2 840.3 836.8 828.9 DAY 30 5 9 20 1 15 10 7 4 10 30 1 MEAN QNH PRESSURE IN HPA 1016.2 1017.1 1014.7 1014.8 1016.4 1010.6 1008.3 1010.5 1013.5 1018.5 1020.8 1017.0 1014.9 MAX. QNH PRESSURE IN HPA 1022.9 1023.5 1019.4 1021.5 1026.0 1016.5 1021.9 1015.3 1021.8 1024.2 1026.5 1024.6 1026.5 DAY 13 25 8 2 13 2 15 25 7 22 4 5 MIN. QNH PRESSURE IN HPA 1006.4 1009.9 1008.4 1008.5 1011.2 1003.5 999.7 1006.8 1008.4 1014.0 1012.9 1008.9 999.7 DAY 30 5 9 20 1 15 10 7 4 10 30 1 MEAN QFF PRESSURE IN HPA 1016.5 1016.8 1008.8 1005.5 1005.3 996.4 992.3 995.0 1000.8 1010.2 1019.6 1016.9 1007.0 MAX. QFF PRESSURE IN HPA 1025.5 1024.0 1015.8 1013.1 1015.8 1005.2 1008.8 999.7 1008.3 1017.3 1030.3 1024.8 1030.3 DAY 2 7 8 24 13 2 15 25 7 22 23 5 MIN. QFF PRESSURE IN HPA 1005.1 1009.6 1001.8 997.4 999.4 989.4 983.8 990.8 993.5 1004.3 1008.2 1007.2 983.8 DAY 30 23 25 20 1 29 9 17 3 3 7 1 PRESSURE AT HOUR 0900 UTC. MEAN QFE PRESSURE IN HPA 841.4 842.3 840.3 840.6 842.1 837.3 834.9 836.9 839.2 843.5 845.6 843.1 840.6 MAX. QFE PRESSURE IN HPA 847.5 846.8 844.4 846.6 850.5 842.1 841.7 840.9 843.2 848.7 849.9 855.0 855.0 DAY 13 19 8 2 13 2 16 25 30 22 4 7 MIN. QFE PRESSURE IN HPA 832.3 835.9 834.2 834.3 837.1 833.1 827.0 833.2 835.2 839.5 839.0 836.8 827.0 DAY 30 5 9 20 1 20 10 7 3 15 21 1 MEAN QNH PRESSURE IN HPA 1014.2 1015.3 1013.0 1013.3 1015.0 1009.4 1006.7 1008.9 1011.7 1016.6 1019.1 1016.1 1013.3 MAX. QNH PRESSURE IN HPA 1021.3 1020.5 1017.7 1020.3 1024.8 1015.0 1014.6 1013.6 1016.3 1022.7 1024.1 1030.0 1030.0 DAY 13 19 8 2 13 2 16 25 30 22 4 7 MIN. QNH PRESSURE IN HPA 1003.6 1007.8 1005.8 1005.9 1009.2 1004.5 997.4 1004.7 1007.0 1012.0 1011.4 1008.9 997.4 DAY 30 5 9 20 1 20 10 7 3 15 21 1 MEAN QFF PRESSURE IN HPA 1013.2 1013.8 1006.2 1003.2 1003.4 994.7 990.1 992.4 998.4 1007.5 1017.2 1015.0 1004.6 MAX. QFF PRESSURE IN HPA 1021.8 1020.6 1012.8 1012.2 1014.1 1003.4 1001.7 997.2 1005.3 1014.7 1027.2 1028.3 1028.3 DAY 2 14 8 24 13 2 16 25 25 22 23 7 MIN. QFF PRESSURE IN HPA 1001.3 1005.1 998.5 993.2 996.6 987.9 980.6 987.9 991.6 1000.9 1006.7 1005.5 980.6 DAY 30 23 9 20 1 20 10 17 3 9 7 9 PRESSURE AT HOUR 1200 UTC. MEAN QFE PRESSURE IN HPA 840.1 840.8 838.8 839.1 840.7 835.6 833.2 834.9 837.3 841.6 844.0 841.6 839.0 MAX. QFE PRESSURE IN HPA 846.2 845.6 842.3 844.6 848.8 841.4 839.3 838.9 841.2 847.7 848.1 848.1 848.8 DAY 13 18 8 2 13 1 16 25 30 22 4 5 MIN. QFE PRESSURE IN HPA 830.4 833.7 832.9 834.0 836.0 831.2 825.8 830.4 833.0 836.9 838.2 835.8 825.8 DAY 30 5 9 20 1 20 9 7 4 15 21 1 MEAN QNH PRESSURE IN HPA 1012.7 1013.5 1011.1 1011.5 1013.3 1007.5 1004.6 1006.7 1009.5 1014.4 1017.3 1014.4 1011.4 MAX. QNH PRESSURE IN HPA 1019.8 1019.1 1015.3 1017.9 1022.8 1014.2 1011.8 1011.3 1014.0 1021.5 1022.0 1022.0 1022.8 DAY 13 18 8 2 13 1 16 25 30 22 4 5 MIN. QNH PRESSURE IN HPA 1001.4 1005.2 1004.3 1005.6 1007.9 1002.3 996.0 1001.4 1004.4 1009.0 1010.5 1007.7 996.0 DAY 30 5 9 20 1 20 9 7 4 15 21 1 MEAN QFF PRESSURE IN HPA 1011.7 1011.7 1004.5 1001.9 1002.2 992.8 988.0 990.4 996.4 1005.6 1015.4 1013.2 1002.8 MAX. QFF PRESSURE IN HPA 1019.7 1017.6 1009.9 1010.5 1012.3 1003.3 998.6 994.7 1003.6 1013.9 1025.3 1020.2 1025.3 DAY 2 14 1 24 13 1 16 29 25 22 23 5 MIN. QFF PRESSURE IN HPA 997.8 1003.6 997.1 993.3 995.6 984.9 978.8 985.5 989.3 997.7 1005.2 1005.2 978.8 DAY 30 24 24 20 1 20 8 12 3 9 6 1 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ESFAHAN (40800) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 32 37 N LONGITUDE 51 40 E DATA PROCESSING CENTER ELEVATION 1550.4 M MEANS AND EXTREMES FOR THE YEAR 1958 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 1500 UTC. MEAN QFE PRESSURE IN HPA 840.6 841.1 839.2 839.3 840.6 835.4 832.7 834.4 837.1 841.8 844.4 842.0 839.1 MAX. QFE PRESSURE IN HPA 846.9 846.3 843.7 844.1 848.4 841.4 839.1 838.5 840.7 847.6 848.4 848.7 848.7 DAY 13 13 28 1 13 1 29 25 29 22 4 5 MIN. QFE PRESSURE IN HPA 831.5 834.4 834.4 834.1 836.4 831.6 824.6 830.2 832.8 837.5 838.9 834.7 824.6 DAY 30 5 9 29 19 20 9 7 4 9 21 11 MEAN QNH PRESSURE IN HPA 1013.3 1013.8 1011.7 1011.7 1013.3 1007.2 1004.0 1006.1 1009.2 1014.7 1017.7 1014.9 1011.5 MAX. QNH PRESSURE IN HPA 1020.6 1019.9 1016.9 1017.3 1022.3 1014.2 1011.5 1010.8 1013.4 1021.4 1022.3 1022.7 1022.7 DAY 13 13 28 1 13 1 29 25 29 22 4 5 MIN. QNH PRESSURE IN HPA 1002.7 1006.1 1006.1 1005.7 1008.4 1002.8 994.6 1001.2 1004.2 1009.7 1011.3 1006.4 994.6 DAY 30 5 9 29 19 20 9 7 4 9 21 11 MEAN QFF PRESSURE IN HPA 1013.9 1013.6 1006.3 1003.3 1003.0 993.3 988.3 991.0 997.5 1007.6 1017.0 1015.0 1004.1 MAX. QFF PRESSURE IN HPA 1022.7 1020.3 1011.5 1010.5 1011.9 1003.5 998.1 995.8 1004.2 1015.6 1027.3 1022.3 1027.3 DAY 12 13 1 24 13 1 16 25 27 22 23 5 MIN. QFF PRESSURE IN HPA 1000.6 1006.2 1000.9 994.2 998.4 986.3 979.1 986.2 991.6 1000.6 1006.8 1005.9 979.1 DAY 30 24 9 29 19 30 9 7 3 9 6 9 PRESSURE AT HOUR 1800 UTC. MEAN QFE PRESSURE IN HPA 841.4 841.9 840.3 840.6 842.3 836.6 834.1 836.0 838.5 843.0 845.3 842.7 840.2 MAX. QFE PRESSURE IN HPA 847.6 847.0 843.9 845.8 849.1 843.4 840.7 839.1 842.9 846.0 849.5 849.3 849.5 DAY 13 18 7 24 13 1 15 25 24 21 4 5 MIN. QFE PRESSURE IN HPA 832.7 834.4 835.8 836.0 838.5 832.0 823.1 832.5 834.2 839.1 840.3 837.9 823.1 DAY 31 5 24 29 1 20 9 16 3 9 30 9 MEAN QNH PRESSURE IN HPA 1014.2 1014.8 1012.9 1013.3 1015.2 1008.7 1005.7 1008.0 1010.8 1016.0 1018.7 1015.7 1012.8 MAX. QNH PRESSURE IN HPA 1021.4 1020.7 1017.1 1019.3 1023.2 1016.5 1013.4 1011.5 1015.9 1019.6 1023.6 1023.4 1023.6 DAY 13 18 7 24 13 1 15 25 24 21 4 5 MIN. QNH PRESSURE IN HPA 1004.1 1006.1 1007.7 1007.9 1010.8 1003.3 992.9 1003.8 1005.8 1011.5 1012.9 1010.1 992.9 DAY 31 5 24 29 1 20 9 16 3 9 30 9 MEAN QFF PRESSURE IN HPA 1014.4 1014.3 1006.9 1003.8 1004.1 994.4 989.7 992.5 998.3 1007.9 1017.6 1015.5 1005.0 MAX. QFF PRESSURE IN HPA 1023.2 1022.4 1013.6 1012.6 1013.1 1004.7 1000.2 997.3 1006.3 1014.5 1027.1 1023.3 1027.1 DAY 12 7 7 24 13 1 15 29 27 31 23 5 MIN. QFF PRESSURE IN HPA 1002.9 1007.7 999.5 995.5 998.9 987.1 976.6 988.2 991.4 1001.8 1007.9 1005.5 976.6 DAY 30 5 24 29 1 28 9 16 3 9 6 9 PRESSURE AT HOUR 2100 UTC. MEAN QFE PRESSURE IN HPA 841.5 842.1 840.6 840.7 842.7 837.1 834.7 836.7 839.0 843.5 845.3 842.8 840.6 MAX. QFE PRESSURE IN HPA 847.6 847.3 845.8 846.2 849.7 842.4 841.3 839.9 843.0 848.7 849.5 854.0 854.0 DAY 12 18 7 24 8 1 15 24 24 22 4 7 MIN. QFE PRESSURE IN HPA 833.2 835.3 835.8 836.3 838.2 832.2 824.6 833.2 834.4 839.2 838.3 838.4 824.6 DAY 31 5 24 28 5 20 9 6 3 9 30 9 MEAN QNH PRESSURE IN HPA 1014.3 1015.0 1013.2 1013.4 1015.7 1009.2 1006.4 1008.8 1011.4 1016.6 1018.7 1015.8 1013.2 MAX. QNH PRESSURE IN HPA 1021.4 1021.1 1019.3 1019.8 1023.9 1015.4 1014.1 1012.5 1016.1 1022.7 1023.6 1028.9 1028.9 DAY 12 18 7 24 8 1 15 24 24 22 4 7 MIN. QNH PRESSURE IN HPA 1004.7 1007.1 1007.7 1008.3 1010.5 1003.5 994.6 1004.7 1006.1 1011.6 1010.6 1010.7 994.6 DAY 31 5 24 28 5 20 9 6 3 9 30 9 MEAN QFF PRESSURE IN HPA 1013.3 1013.6 1006.5 1003.3 1004.2 994.6 990.0 992.5 998.1 1007.5 1016.9 1014.8 1004.6 MAX. QFF PRESSURE IN HPA 1021.8 1019.5 1015.3 1012.8 1014.4 1003.3 1000.9 997.1 1004.8 1015.0 1026.8 1026.6 1026.8 DAY 12 7 7 24 8 1 16 25 24 22 22 7 MIN. QFF PRESSURE IN HPA 1003.9 1005.9 999.1 995.5 999.1 987.2 977.7 987.8 991.1 1001.0 1006.1 1005.1 977.7 DAY 31 23 24 28 26 20 9 16 2 9 6 9 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ESFAHAN (40800) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 32 37 N LONGITUDE 51 40 E DATA PROCESSING CENTER ELEVATION 1550.4 M MEANS AND EXTREMES FOR THE YEAR 1959 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AIR TEMPERATURE (C) 3.1 1.9 10.4 18.3 20.7 27.7 29.0 31.2 26.3 19.0 9.4 2.0 16.6 MINIMUN AIR TEMPERATURE (C) -1.9 -4.1 3.3 10.1 13.3 19.2 20.6 22.5 16.2 9.6 2.1 -3.6 9.0 DAYS WITH MINIMUM TEMP. >=21 0 0 0 0 0 14 15 28 1 0 0 0 58 DAYS WITH MINIMUM TEMP. <=-4 8 16 1 0 0 0 0 0 0 0 0 11 36 DAYS WITH FREEZING MIN.<= 0 25 25 10 0 0 0 0 0 0 0 8 29 97 TEMPERATURE RECORDS LOWEST(C) -8.0 -9.0 -6.0 3.0 8.0 14.0 17.0 19.0 11.0 6.0 -3.0 -10.0 -10.0 DAY 3 21 9 8 3 3 9 28 30 8 27 15 MAXIMUM AIR TEMPERATURE (C) 9.5 8.4 17.6 25.6 27.3 34.9 36.3 39.0 34.7 26.8 15.8 8.5 23.7 DAYS WITH MAXIMUM TEMP. >=30 0 0 0 4 8 30 31 31 29 4 0 0 137 DAYS WITH MAXIMUM TEMP. <= 0 0 0 0 0 0 0 0 0 0 0 0 1 1 TEMPERATURE RECORDS HIGHEST(C) 16.0 14.0 26.0 31.0 33.0 40.0 40.0 42.0 39.0 32.0 22.0 15.0 42.0 DAY 31 1 16 30 27 30 1 16 2 2 7 21 DIF. BETWEEN (MAX.-MIN.) (C) 11.4 12.5 14.3 15.5 14.0 15.7 15.7 16.5 18.5 17.2 13.7 12.1 14.7 MEAN DAILY TEMP. (MDT) (C) 3.8 2.2 10.4 17.8 20.3 27.0 28.5 30.7 25.4 18.2 9.0 2.5 16.3 COOLING DEG. DAYS(BASE 21 0C) 0.0 0.0 0.0 5.0 28.5 181.5 231.5 302.0 133.5 5.5 0.0 0.0 887.5 HEATING DEG. DAYS(BASE 18 0C) 439.5 443.5 234.5 40.5 13.5 0.0 0.0 0.0 0.0 22.0 270.5 482.0 1946.0 DEWPOINT (MEAN C) -2.9 -8.3 -3.1 1.3 5.7 5.2 7.1 9.5 5.0 0.5 -2.9 -3.6 1.1 MIXING RATIO (G/KG) 3.77 2.63 3.93 5.29 7.18 7.09 8.02 9.44 6.99 4.90 3.90 3.57 5.56 VAPOUR PRESSURE (HPA) 5.06 3.52 5.26 7.09 9.55 9.42 10.61 12.43 9.27 6.59 5.24 4.82 7.41 SATURATION DEF. (HPA) 2.91 3.81 8.29 15.13 16.06 29.36 31.05 34.96 26.78 16.57 7.14 2.61 16.22 RELATIVE HUMIDITY (MEAN %) 68 53 43 36 41 26 28 29 28 31 46 69 42 RELATIVE HUMIDITY (MAX. %) 89 81 66 60 63 40 44 43 43 47 66 85 61 RELATIVE HUMIDITY (MIN. %) 43 26 22 17 24 16 18 17 17 19 30 48 25 RELATIVE HUMIDITY (MEAN% 03UTC) 81 67 59 55 58 37 40 41 42 44 61 78 55 RELATIVE HUMIDITY (MEAN% 09UTC) 54 40 29 23 30 18 20 20 20 24 36 60 31 RELATIVE HUMIDITY (MEAN% 15UTC) 61 42 34 25 31 21 22 22 23 26 40 68 35 RH=0 => RELATIVE HUMIDITY < 0.5% AMOUNT OF PRECIPITATION MM. 22.0 8.6 6.2 12.0 8.9 0.0 0.0 0.0 0.0 0.0 0.1 10.5 68.3 DAYS WITH PRECIPITATION >=10 1 0 0 1 0 0 0 0 0 0 0 0 2 DAYS WITH PRECIPITATION >= 5 2 0 0 1 0 0 0 0 0 0 0 1 4 DAYS WITH PRECIPITATION >= 1 3 3 3 2 5 0 0 0 0 0 0 2 18 DAYS WITH PRECIPITATION 5 5 5 4 8 0 0 1 0 0 5 2 35 GREATEST DAILY PRECIPITATION 13.0 4.0 3.0 11.0 3.2 0.0 0.0 0.0 0.0 0.0 0.0 9.0 13.0 DAY 22 9 27 7 11 ** ** ** ** ** ** 1 DAY WITH THUNDER STORM 0 0 0 1 7 0 0 0 0 1 0 0 9 DAYS WITH SNOW OR SLEET 4 5 0 0 0 0 0 0 0 0 2 3 14 DAYS WITH DUST 0 0 3 2 6 1 1 1 2 6 2 0 24 WIND DIRECTION (PREVAILING) 270 270 270 270 270 270 270 270 270 270 90 270 270 PREVAILING WIND SPEED(KNOTS) 4.4 7.9 7.8 7.4 7.3 6.7 5.1 5.2 4.6 5.5 5.2 3.8 6.2 PREVAILING WIND PERCENT 24.3 37.5 38.5 42.5 36.3 41.7 21.8 28.7 25.0 39.3 23.6 25.4 31.9 CALMS PERCENT OF WIND 25.9 17.4 13.0 14.6 10.5 5.8 12.9 11.3 12.1 11.3 14.8 12.1 13.5 NO. OF WIND OBSERVATION 247 224 247 240 248 240 248 247 240 247 237 248 2913 VECTOR WIND DIRECTION (MEAN) 275 256 245 266 283 289 69 1 200 266 180 171 262 VECTOR WIND MAGNITUDE(KNOTS) 0.7 3.9 5.0 4.1 2.7 2.7 0.7 0.3 0.3 1.6 0.3 0.7 1.6 WIND STEADINESES (MEAN %) 18.4 60.9 64.9 67.2 44.3 48.2 14.6 6.1 7.5 33.3 6.1 20.0 30.8 WIND SPEED (MEAN KNOTS) 3.8 6.4 7.7 6.1 6.1 5.6 4.8 4.9 4.0 4.8 4.9 3.5 5.2 FASTEST WIND DIRECTION 270 180 230 230 270 250 180 180 230 270 230 130 180 FASTEST WIND SPEED (KNOTS) 25 35 35 35 30 30 18 15 18 35 30 13 35 DAY 23 25 19 6 19 2 31 9 21 4 25 27 DAYS WITH SKY CLEAR (0-2)/8 12 16 13 12 8 30 27 29 30 29 16 19 241 DAYS WITH P.CLOUDY (3-6)/8 13 9 15 13 14 0 4 2 0 1 10 9 90 DAYS WITH CLOUDY (7-8)/8 6 3 3 5 9 0 0 0 0 1 4 3 34 DAYS WITH VISIBILITY =< 2 KM 6 5 0 0 0 2 1 0 0 1 1 2 18 DURATION OF SUNSHINE HOURS ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ESFAHAN (40800) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 32 37 N LONGITUDE 51 40 E DATA PROCESSING CENTER ELEVATION 1550.4 M MEANS AND EXTREMES FOR THE YEAR 1959 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL MEAN QFE PRESSURE IN HPA 841.8 836.8 839.4 841.1 838.3 836.7 834.3 833.3 836.5 842.4 842.5 845.0 839.0 MAX. QFE PRESSURE IN HPA 848.2 850.1 845.3 848.0 844.7 842.5 858.0 838.6 843.7 851.4 849.5 851.2 858.0 DAY-HOUR 3- 6 9-21 15- 6 8- 6 22-18 13- 3 7- 9 29- 6 25- 6 21- 6 26-15 17- 6 MIN. QFE PRESSURE IN HPA 833.1 827.4 829.0 827.0 830.8 826.3 828.2 828.1 831.1 826.7 832.0 838.6 826.3 DAY-HOUR 23- 0 20-12 8- 6 5-15 31-12 28-15 15-18 2-15 12-12 7-15 25-12 12-12 MEAN QNH PRESSURE IN HPA 1014.7 1008.8 1011.9 1013.8 1010.6 1008.7 1005.9 1004.8 1008.5 1015.3 1015.5 1018.4 1011.4 MAX. QNH PRESSURE IN HPA 1022.1 1024.3 1018.7 1021.9 1018.0 1015.5 1033.5 1010.9 1016.9 1025.8 1023.6 1025.6 1033.5 DAY-HOUR 3- 6 9-21 15- 6 8- 6 22-18 13- 3 7- 9 29- 6 25- 6 21- 6 26-15 17- 6 MIN. QNH PRESSURE IN HPA 1004.5 997.9 999.8 997.4 1001.9 996.6 998.8 998.7 1002.2 997.1 1003.3 1010.9 996.6 DAY-HOUR 23- 0 20-12 8- 6 5-15 31-12 28-15 15-18 2-15 12-12 7-15 25-12 12-12 MEAN QFF PRESSURE IN HPA 1015.6 1010.4 1008.0 1004.9 999.8 993.9 990.3 987.8 994.5 1005.9 1012.2 1020.2 1003.6 MAX. QFF PRESSURE IN HPA 1028.3 1029.0 1021.2 1017.3 1008.6 1002.6 1018.9 995.4 1005.6 1018.0 1024.8 1032.6 1032.6 DAY-HOUR 3- 3 9-21 9- 6 8- 6 4- 6 13- 3 7- 9 29- 6 25- 6 21- 3 26-15 15- 6 MIN. QFF PRESSURE IN HPA 1006.0 996.6 999.5 989.0 988.6 979.6 983.1 980.3 986.7 989.1 998.8 1010.8 979.6 DAY-HOUR 20-12 25-12 18-12 5-15 31-12 28-15 26-12 2-15 5-15 7-15 25-12 12-12 PRESSURE AT HOUR 0000 UTC. MEAN QFE PRESSURE IN HPA 841.7 836.8 839.2 841.0 838.5 836.8 834.2 833.6 836.8 842.7 842.8 844.8 839.1 MAX. QFE PRESSURE IN HPA 846.9 844.2 844.4 846.1 843.0 841.7 838.1 837.2 841.7 850.4 847.6 849.2 850.4 DAY 3 3 15 8 1 13 8 29 25 21 4 16 MIN. QFE PRESSURE IN HPA 833.1 830.2 829.9 835.8 834.3 828.8 830.9 830.8 832.3 837.7 836.9 839.3 828.8 DAY 23 17 1 6 31 28 26 2 13 7 25 1 MEAN QNH PRESSURE IN HPA 1014.5 1008.9 1011.6 1013.7 1010.8 1008.9 1005.9 1005.2 1008.8 1015.7 1015.9 1018.2 1011.5 MAX. QNH PRESSURE IN HPA 1020.6 1017.5 1017.7 1019.7 1016.1 1014.6 1010.4 1009.3 1014.6 1024.7 1021.4 1023.3 1024.7 DAY 3 3 15 8 1 13 8 29 25 21 4 16 MIN. QNH PRESSURE IN HPA 1004.5 1001.2 1000.8 1007.7 1005.9 999.5 1002.0 1001.9 1003.6 1009.9 1009.0 1011.8 999.5 DAY 23 17 1 6 31 28 26 2 13 7 25 1 MEAN QFF PRESSURE IN HPA 1014.8 1009.9 1007.3 1004.5 999.9 994.0 990.0 987.8 994.4 1005.7 1011.8 1019.3 1003.3 MAX. QFF PRESSURE IN HPA 1025.7 1019.0 1017.3 1014.0 1006.3 1000.9 996.1 993.6 1002.9 1016.0 1019.6 1030.0 1030.0 DAY 3 11 9 8 5 13 8 29 25 21 4 15 MIN. QFF PRESSURE IN HPA 1006.5 1000.5 1000.8 998.8 992.2 982.0 983.9 983.5 987.6 999.4 1004.6 1012.2 982.0 DAY 23 17 18 13 30 28 26 2 6 4 25 12 PRESSURE AT HOUR 0300 UTC. MEAN QFE PRESSURE IN HPA 842.0 837.2 839.8 841.6 839.3 837.7 835.2 834.3 837.5 843.3 843.3 845.2 839.7 MAX. QFE PRESSURE IN HPA 847.6 844.5 844.5 846.7 843.0 842.5 839.1 837.7 842.5 850.8 848.0 850.0 850.8 DAY 3 3 15 8 5 13 8 29 25 21 10 17 MIN. QFE PRESSURE IN HPA 834.3 830.2 831.5 836.5 834.7 829.2 832.2 831.0 833.4 838.4 836.8 840.5 829.2 DAY 23 20 1 6 19 28 28 3 12 30 25 1 MEAN QNH PRESSURE IN HPA 1014.9 1009.3 1012.4 1014.5 1011.7 1009.8 1007.0 1006.0 1009.7 1016.4 1016.4 1018.6 1012.2 MAX. QNH PRESSURE IN HPA 1021.4 1017.8 1017.8 1020.4 1016.1 1015.5 1011.5 1009.9 1015.5 1025.1 1021.9 1024.2 1025.1 DAY 3 3 15 8 5 13 8 29 25 21 10 17 MIN. QNH PRESSURE IN HPA 1005.9 1001.2 1002.7 1008.5 1006.4 1000.0 1003.5 1002.1 1004.9 1010.7 1008.9 1013.2 1000.0 DAY 23 20 1 6 19 28 28 3 12 30 25 1 MEAN QFF PRESSURE IN HPA 1016.5 1011.6 1009.5 1006.4 1001.6 995.6 992.0 989.5 996.8 1008.3 1014.4 1021.6 1005.3 MAX. QFF PRESSURE IN HPA 1028.3 1021.0 1020.0 1017.1 1007.4 1002.6 997.7 994.8 1004.8 1018.0 1020.7 1030.6 1030.6 DAY 3 3 9 8 5 13 8 29 25 21 4 16 MIN. QFF PRESSURE IN HPA 1008.6 1001.8 1001.1 999.9 994.1 982.7 987.2 984.7 990.5 1001.2 1006.7 1015.0 982.7 DAY 23 20 23 13 31 28 26 3 6 4 25 12 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ESFAHAN (40800) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 32 37 N LONGITUDE 51 40 E DATA PROCESSING CENTER ELEVATION 1550.4 M MEANS AND EXTREMES FOR THE YEAR 1959 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 0600 UTC. MEAN QFE PRESSURE IN HPA 843.3 838.1 840.5 842.5 839.6 838.1 835.6 834.9 838.3 844.3 844.3 846.4 840.5 MAX. QFE PRESSURE IN HPA 848.2 845.3 845.3 848.0 843.4 842.4 839.0 838.6 843.7 851.4 848.8 851.2 851.4 DAY 3 3 15 8 4 13 16 29 25 21 3 17 MIN. QFE PRESSURE IN HPA 835.8 830.8 829.0 836.0 834.7 829.2 832.6 831.4 834.6 839.0 836.8 840.4 829.0 DAY 23 20 8 6 19 28 28 2 12 30 25 12 MEAN QNH PRESSURE IN HPA 1016.4 1010.3 1013.1 1015.4 1012.1 1010.3 1007.5 1006.6 1010.6 1017.6 1017.5 1020.0 1013.1 MAX. QNH PRESSURE IN HPA 1022.1 1018.7 1018.7 1021.9 1016.5 1015.4 1011.4 1010.9 1016.9 1025.8 1022.8 1025.6 1025.8 DAY 3 3 15 8 4 13 16 29 25 21 3 17 MIN. QNH PRESSURE IN HPA 1007.7 1001.9 999.8 1007.9 1006.4 1000.0 1004.0 1002.6 1006.3 1011.4 1008.9 1013.0 999.8 DAY 23 20 8 6 19 28 28 2 12 30 25 12 MEAN QFF PRESSURE IN HPA 1017.9 1012.2 1009.5 1006.5 1001.3 995.7 992.0 989.8 996.6 1008.0 1014.3 1022.3 1005.5 MAX. QFF PRESSURE IN HPA 1028.1 1021.0 1021.2 1017.3 1008.6 1002.3 997.2 995.4 1005.6 1017.4 1020.9 1032.6 1032.6 DAY 3 3 9 8 4 13 16 29 25 21 3 15 MIN. QFF PRESSURE IN HPA 1008.5 1001.4 1000.4 999.5 993.8 983.6 987.4 984.1 990.9 1001.2 1005.0 1013.9 983.6 DAY 22 25 8 6 31 28 26 2 3 4 25 12 PRESSURE AT HOUR 0900 UTC. MEAN QFE PRESSURE IN HPA 842.0 837.0 839.7 841.5 838.5 837.2 836.0 833.8 836.9 842.9 842.6 845.0 839.4 MAX. QFE PRESSURE IN HPA 846.8 844.0 844.7 847.2 842.0 841.0 858.0 837.7 841.9 850.0 847.1 850.5 858.0 DAY 3 3 21 8 4 13 7 29 25 20 10 16 MIN. QFE PRESSURE IN HPA 834.3 828.7 832.2 835.0 832.6 828.6 831.6 830.7 833.1 837.4 833.6 839.9 828.6 DAY 4 20 1 6 31 28 26 2 12 6 25 12 MEAN QNH PRESSURE IN HPA 1014.9 1009.1 1012.2 1014.4 1010.8 1009.3 1007.9 1005.3 1009.0 1015.9 1015.6 1018.4 1011.9 MAX. QNH PRESSURE IN HPA 1020.5 1017.2 1018.0 1021.0 1014.9 1013.7 1033.5 1009.9 1014.8 1024.2 1020.8 1024.8 1033.5 DAY 3 3 21 8 4 13 7 29 25 20 10 16 MIN. QNH PRESSURE IN HPA 1005.9 999.4 1003.5 1006.8 1004.0 999.3 1002.8 1001.8 1004.5 1009.6 1005.1 1012.5 999.3 DAY 4 20 1 6 31 28 26 2 12 6 25 12 MEAN QFF PRESSURE IN HPA 1015.5 1010.3 1007.7 1004.9 999.7 994.3 991.9 987.9 994.3 1005.7 1011.6 1019.6 1003.6 MAX. QFF PRESSURE IN HPA 1024.0 1019.1 1018.3 1015.0 1006.1 1000.1 1018.9 993.1 1002.1 1015.0 1017.8 1030.2 1030.2 DAY 3 3 9 8 4 13 7 29 24 20 3 16 MIN. QFF PRESSURE IN HPA 1008.2 996.9 1000.4 998.1 990.9 982.8 984.2 982.6 988.9 997.5 999.8 1012.1 982.6 DAY 22 25 19 6 31 28 26 2 12 4 25 12 PRESSURE AT HOUR 1200 UTC. MEAN QFE PRESSURE IN HPA 840.7 835.3 837.8 839.9 836.9 835.4 833.0 831.9 834.9 841.1 840.9 844.0 837.7 MAX. QFE PRESSURE IN HPA 845.0 841.7 842.6 845.6 840.4 839.2 836.5 835.0 839.7 848.3 846.1 849.4 849.4 DAY 3 3 21 8 4 12 7 29 25 20 3 16 MIN. QFE PRESSURE IN HPA 834.1 827.4 831.8 834.7 830.8 826.7 829.4 828.4 831.1 834.7 832.0 838.6 826.7 DAY 22 20 1 6 31 28 2 2 12 30 25 12 MEAN QNH PRESSURE IN HPA 1013.4 1007.1 1010.1 1012.5 1009.0 1007.3 1004.4 1003.2 1006.6 1013.8 1013.7 1017.2 1009.8 MAX. QNH PRESSURE IN HPA 1018.4 1014.6 1015.6 1019.1 1013.0 1011.6 1008.5 1006.8 1012.2 1022.2 1019.7 1023.5 1023.5 DAY 3 3 21 8 4 12 7 29 25 20 3 16 MIN. QNH PRESSURE IN HPA 1005.7 997.9 1003.0 1006.4 1001.9 997.1 1000.2 999.1 1002.2 1006.4 1003.3 1010.9 997.1 DAY 22 20 1 6 31 28 2 2 12 30 25 12 MEAN QFF PRESSURE IN HPA 1013.5 1008.1 1005.6 1003.3 998.1 992.3 988.4 985.8 992.1 1003.8 1009.7 1018.2 1001.6 MAX. QFF PRESSURE IN HPA 1022.6 1015.6 1014.9 1013.1 1004.6 998.5 994.3 990.9 1000.9 1012.7 1017.6 1028.2 1028.2 DAY 3 3 9 8 4 3 8 28 30 21 3 16 MIN. QFF PRESSURE IN HPA 1006.0 996.6 999.5 998.1 988.6 980.5 983.1 980.5 986.8 996.9 998.8 1010.8 980.5 DAY 20 25 18 24 31 28 26 2 6 4 25 12 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ESFAHAN (40800) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 32 37 N LONGITUDE 51 40 E DATA PROCESSING CENTER ELEVATION 1550.4 M MEANS AND EXTREMES FOR THE YEAR 1959 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 1500 UTC. MEAN QFE PRESSURE IN HPA 841.3 835.8 838.5 839.5 836.8 835.1 832.8 831.4 834.7 840.9 841.9 844.5 837.8 MAX. QFE PRESSURE IN HPA 845.8 842.4 841.7 844.8 841.4 838.9 839.1 834.9 839.4 849.3 849.5 849.6 849.6 DAY 2 2 20 8 22 21 31 29 25 25 26 16 MIN. QFE PRESSURE IN HPA 834.5 828.3 833.0 827.0 830.9 826.3 829.1 828.1 831.1 826.7 834.1 839.0 826.3 DAY 22 20 1 5 31 28 2 2 12 7 25 12 MEAN QNH PRESSURE IN HPA 1014.0 1007.7 1010.9 1012.0 1008.8 1006.8 1004.1 1002.6 1006.4 1013.6 1014.7 1017.8 1010.0 MAX. QNH PRESSURE IN HPA 1019.3 1015.4 1014.6 1018.2 1014.2 1011.3 1011.5 1006.6 1011.9 1023.4 1023.6 1023.7 1023.7 DAY 2 2 20 8 22 21 31 29 25 25 26 16 MIN. QNH PRESSURE IN HPA 1006.2 999.0 1004.4 997.4 1002.0 996.6 999.9 998.7 1002.2 997.1 1005.7 1011.4 996.6 DAY 22 20 1 5 31 28 2 2 12 7 25 12 MEAN QFF PRESSURE IN HPA 1015.4 1010.1 1007.8 1003.8 998.6 992.4 989.0 986.0 993.3 1005.5 1012.7 1020.6 1002.9 MAX. QFF PRESSURE IN HPA 1024.3 1018.4 1016.3 1013.1 1004.6 999.9 994.6 991.1 1002.2 1015.9 1024.8 1029.7 1029.7 DAY 3 10 9 8 4 3 7 29 30 25 26 16 MIN. QFF PRESSURE IN HPA 1007.2 998.7 1002.7 989.0 989.9 979.6 983.2 980.3 986.7 989.1 1003.7 1013.2 979.6 DAY 22 25 25 5 31 28 29 2 5 7 25 12 PRESSURE AT HOUR 1800 UTC. MEAN QFE PRESSURE IN HPA 842.0 837.0 839.7 841.3 838.3 836.4 833.5 833.2 836.3 841.7 842.2 845.1 838.9 MAX. QFE PRESSURE IN HPA 847.3 844.0 843.4 846.0 844.7 841.0 843.2 836.0 841.0 849.9 846.9 850.0 850.0 DAY 2 2 20 15 22 3 7 28 24 20 2 16 MIN. QFE PRESSURE IN HPA 834.0 830.6 835.6 834.6 832.7 828.6 828.2 830.2 831.1 828.1 835.6 840.2 828.1 DAY 22 20 25 6 18 27 15 10 12 6 25 11 MEAN QNH PRESSURE IN HPA 1014.9 1009.0 1012.3 1014.0 1010.6 1008.4 1005.1 1004.7 1008.3 1014.5 1015.1 1018.6 1011.3 MAX. QNH PRESSURE IN HPA 1021.1 1017.2 1016.5 1019.6 1018.0 1013.7 1016.3 1007.9 1013.7 1024.1 1020.6 1024.2 1024.2 DAY 2 2 20 15 22 3 7 28 24 20 2 16 MIN. QNH PRESSURE IN HPA 1005.6 1001.6 1007.5 1006.3 1004.1 999.3 998.8 1001.2 1002.2 998.7 1007.5 1012.8 998.7 DAY 22 20 25 6 18 27 15 10 12 6 25 11 MEAN QFF PRESSURE IN HPA 1016.2 1010.9 1008.5 1005.0 999.8 993.6 989.4 987.8 994.4 1005.1 1011.9 1020.8 1003.6 MAX. QFF PRESSURE IN HPA 1025.8 1019.8 1016.7 1013.8 1007.0 1002.0 1002.2 992.8 1002.6 1015.8 1018.1 1030.9 1030.9 DAY 2 10 9 7 22 3 7 28 24 20 2 15 MIN. QFF PRESSURE IN HPA 1006.4 1000.1 1002.2 997.5 991.9 981.7 983.8 981.8 987.0 990.1 1004.4 1013.6 981.7 DAY 22 25 23 6 18 27 15 2 12 6 25 11 PRESSURE AT HOUR 2100 UTC. MEAN QFE PRESSURE IN HPA 841.9 837.3 839.8 841.5 838.5 836.9 834.2 833.7 836.9 842.3 842.6 845.2 839.2 MAX. QFE PRESSURE IN HPA 846.9 850.1 844.6 847.7 842.3 841.7 838.4 836.8 842.1 850.5 847.6 850.1 850.5 DAY 2 9 14 30 4 12 15 29 30 20 2 16 MIN. QFE PRESSURE IN HPA 833.6 830.2 835.8 834.0 834.0 828.9 830.8 830.8 832.3 836.0 836.6 840.5 828.9 DAY 22 28 25 20 31 27 25 10 12 30 25 11 MEAN QNH PRESSURE IN HPA 1014.7 1009.4 1012.4 1014.3 1010.8 1009.0 1005.9 1005.2 1009.0 1015.3 1015.5 1018.6 1011.7 MAX. QNH PRESSURE IN HPA 1020.6 1024.3 1017.9 1021.5 1015.3 1014.6 1010.7 1008.9 1015.0 1024.8 1021.4 1024.3 1024.8 DAY 2 9 14 30 4 12 15 29 30 20 2 16 MIN. QNH PRESSURE IN HPA 1005.1 1001.2 1007.7 1005.6 1005.6 999.7 1001.9 1001.9 1003.6 1007.9 1008.6 1013.2 999.7 DAY 22 28 25 20 31 27 25 10 12 30 25 11 MEAN QFF PRESSURE IN HPA 1015.4 1010.6 1007.7 1004.7 999.7 993.8 989.8 987.7 994.4 1005.3 1011.7 1019.9 1003.4 MAX. QFF PRESSURE IN HPA 1024.3 1029.0 1016.3 1013.7 1005.6 1000.4 996.5 993.2 1003.7 1015.9 1018.9 1030.9 1030.9 DAY 2 9 8 7 4 12 8 27 30 20 3 14 MIN. QFF PRESSURE IN HPA 1006.8 1001.1 1001.0 997.5 991.7 982.3 983.1 982.9 987.9 998.4 1004.8 1012.7 982.3 DAY 22 28 17 20 31 27 25 1 12 21 25 11 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ESFAHAN (40800) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 32 37 N LONGITUDE 51 40 E DATA PROCESSING CENTER ELEVATION 1550.4 M MEANS AND EXTREMES FOR THE YEAR 1960 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AIR TEMPERATURE (C) 5.7 9.2 8.3 14.1 21.6 28.0 29.4 29.1 24.0 16.8 9.8 4.3 16.7 MINIMUN AIR TEMPERATURE (C) -1.6 1.5 1.9 8.1 13.1 19.0 21.7 19.4 15.0 7.8 2.9 -2.1 8.9 DAYS WITH MINIMUM TEMP. >=21 0 0 0 0 0 7 23 6 0 0 0 0 36 DAYS WITH MINIMUM TEMP. <=-4 5 2 4 0 0 0 0 0 0 0 0 9 20 DAYS WITH FREEZING MIN.<= 0 25 10 9 0 0 0 0 0 0 0 8 26 78 TEMPERATURE RECORDS LOWEST(C) -8.0 -7.0 -5.0 4.0 5.0 13.0 17.0 15.0 12.0 4.0 -2.0 -5.0 -8.0 DAY 29 1 15 3 1 3 2 28 15 25 22 25 MAXIMUM AIR TEMPERATURE (C) 13.3 16.7 14.7 20.3 28.5 35.4 36.5 37.0 32.0 25.5 17.2 11.4 24.0 DAYS WITH MAXIMUM TEMP. >=30 0 0 0 0 16 30 31 31 29 2 0 0 139 DAYS WITH MAXIMUM TEMP. <= 0 0 0 0 0 0 0 0 0 0 0 0 0 0 TEMPERATURE RECORDS HIGHEST(C) 20.0 22.0 21.0 29.0 33.0 39.0 41.0 38.0 37.0 30.0 24.0 15.0 41.0 DAY 17 26 1 7 28 25 7 4 1 1 2 1 DIF. BETWEEN (MAX.-MIN.) (C) 14.9 15.2 12.8 12.2 15.4 16.4 14.8 17.6 17.0 17.7 14.3 13.5 15.1 MEAN DAILY TEMP. (MDT) (C) 5.9 9.1 8.3 14.2 20.8 27.2 29.1 28.2 23.5 16.7 10.0 4.6 16.5 COOLING DEG. DAYS(BASE 21 0C) 0.0 0.0 0.0 0.0 38.5 187.0 252.0 222.5 75.5 0.0 0.0 0.0 775.5 HEATING DEG. DAYS(BASE 18 0C) 376.5 259.0 301.0 115.5 15.5 0.0 0.0 0.0 0.0 54.0 239.5 414.5 1775.5 DEWPOINT (MEAN C) -4.2 -5.0 -5.1 0.0 -0.7 8.4 6.7 3.9 -1.4 -5.7 -3.6 -5.8 -1.0 MIXING RATIO (G/KG) 3.44 3.35 3.43 4.76 4.63 9.39 7.86 6.64 4.31 3.11 3.69 3.02 4.80 VAPOUR PRESSURE (HPA) 4.63 4.51 4.60 6.37 6.21 12.38 10.38 8.80 5.78 4.20 4.97 4.08 6.41 SATURATION DEF. (HPA) 5.08 7.80 6.94 10.50 20.90 26.96 32.24 33.37 25.54 16.28 7.82 4.61 16.50 RELATIVE HUMIDITY (MEAN %) 52 42 45 43 26 33 26 22 21 24 43 51 36 RELATIVE HUMIDITY (MAX. %) 73 64 71 64 43 48 39 34 34 42 65 75 54 RELATIVE HUMIDITY (MIN. %) 32 22 24 24 14 20 15 14 10 11 23 30 20 RELATIVE HUMIDITY (MEAN% 03UTC) 67 58 61 60 41 43 36 32 33 36 61 67 50 RELATIVE HUMIDITY (MEAN% 09UTC) 40 32 35 31 18 27 22 17 14 14 29 35 26 RELATIVE HUMIDITY (MEAN% 15UTC) 42 33 39 32 18 28 21 17 15 18 35 42 28 RH=0 => RELATIVE HUMIDITY < 0.5% AMOUNT OF PRECIPITATION MM. 3.0 6.6 20.2 4.0 0.3 0.0 0.1 0.0 0.0 0.0 1.0 5.0 40.2 DAYS WITH PRECIPITATION >=10 0 0 1 0 0 0 0 0 0 0 0 0 1 DAYS WITH PRECIPITATION >= 5 0 1 1 0 0 0 0 0 0 0 0 1 3 DAYS WITH PRECIPITATION >= 1 2 2 8 2 0 0 0 0 0 0 0 1 15 DAYS WITH PRECIPITATION 3 4 12 10 2 0 3 0 1 0 5 1 41 GREATEST DAILY PRECIPITATION 2.0 5.1 12.0 1.4 0.3 0.0 0.1 0.0 0.0 0.0 0.6 5.0 12.0 DAY 27 12 24 15 12 ** 24 ** ** ** 9 9 DAY WITH THUNDER STORM 0 0 0 2 2 1 0 0 0 0 0 0 5 DAYS WITH SNOW OR SLEET 2 0 0 1 0 0 0 0 0 0 0 0 3 DAYS WITH DUST 1 4 3 1 1 0 3 0 2 0 0 0 15 WIND DIRECTION (PREVAILING) 270 270 270 270 270 270 270 90 90 90 270 270 270 PREVAILING WIND SPEED(KNOTS) 6.6 8.2 9.2 8.7 7.0 5.9 4.7 4.5 4.0 4.8 5.8 3.6 6.7 PREVAILING WIND PERCENT 35.9 37.9 41.5 42.1 37.1 40.0 30.4 21.4 33.8 21.8 20.4 15.3 28.3 CALMS PERCENT OF WIND 14.5 16.8 8.5 10.0 6.9 5.4 6.5 12.1 18.8 26.2 27.5 38.3 16.0 NO. OF WIND OBSERVATION 248 232 248 240 248 240 247 248 240 248 240 248 2927 VECTOR WIND DIRECTION (MEAN) 247 261 269 265 279 290 314 120 87 65 329 148 266 VECTOR WIND MAGNITUDE(KNOTS) 2.4 3.0 3.4 4.5 2.0 2.1 0.9 1.3 1.5 0.4 0.2 0.6 1.2 WIND STEADINESES (MEAN %) 44.4 50.0 49.3 63.4 34.5 39.6 18.4 31.0 44.1 11.8 6.1 25.0 25.0 WIND SPEED (MEAN KNOTS) 5.4 6.0 6.9 7.1 5.8 5.3 4.9 4.2 3.4 3.4 3.3 2.4 4.8 FASTEST WIND DIRECTION 230 270 270 270 270 230 180 130 180 90 270 270 230 FASTEST WIND SPEED (KNOTS) 40 30 30 30 20 18 20 20 13 18 30 10 40 DAY 7 22 6 19 10 20 24 18 7 10 20 30 DAYS WITH SKY CLEAR (0-2)/8 23 19 11 6 20 30 23 31 27 29 16 18 253 DAYS WITH P.CLOUDY (3-6)/8 8 6 13 14 10 0 8 0 3 2 11 10 85 DAYS WITH CLOUDY (7-8)/8 0 4 7 10 1 0 0 0 0 0 3 3 28 DAYS WITH VISIBILITY =< 2 KM 0 0 0 1 0 0 0 0 0 0 0 1 2 DURATION OF SUNSHINE HOURS ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ESFAHAN (40800) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 32 37 N LONGITUDE 51 40 E DATA PROCESSING CENTER ELEVATION 1550.4 M MEANS AND EXTREMES FOR THE YEAR 1960 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL MEAN QFE PRESSURE IN HPA 842.7 842.2 837.7 839.5 840.8 836.4 834.5 835.3 840.4 844.0 844.1 844.2 840.2 MAX. QFE PRESSURE IN HPA 850.0 849.6 845.4 847.7 846.2 843.0 841.5 840.8 845.0 850.2 849.3 850.4 850.4 DAY-HOUR 19- 6 15- 6 30- 6 8- 6 6- 6 3- 6 29- 6 15- 6 12- 6 28- 6 16- 6 5- 6 MIN. QFE PRESSURE IN HPA 833.4 834.0 828.3 833.0 834.7 828.8 826.5 830.3 834.4 837.4 834.6 836.8 826.5 DAY-HOUR 7-12 29-12 12- 0 19-15 20-15 30-15 23- 6 26-15 1-12 8-12 19-12 30-12 MEAN QNH PRESSURE IN HPA 1015.7 1015.1 1009.9 1012.0 1013.5 1008.4 1006.2 1007.1 1013.1 1017.2 1017.4 1017.4 1012.8 MAX. QNH PRESSURE IN HPA 1024.2 1023.7 1018.9 1021.5 1019.8 1016.1 1014.3 1013.5 1018.4 1024.4 1023.4 1024.7 1024.7 DAY-HOUR 19- 6 15- 6 30- 6 8- 6 6- 6 3- 6 29- 6 15- 6 12- 6 28- 6 16- 6 5- 6 MIN. QNH PRESSURE IN HPA 1004.9 1005.6 999.0 1004.4 1006.4 999.5 996.9 1001.3 1006.1 1009.6 1006.3 1008.9 996.9 DAY-HOUR 7-12 29-12 12- 0 19-15 20-15 30-15 23- 6 26-15 1-12 8-12 19-12 30-12 MEAN QFF PRESSURE IN HPA 1015.0 1012.2 1007.3 1005.5 1002.6 993.3 990.3 991.5 1000.7 1009.4 1013.9 1017.7 1004.9 MAX. QFF PRESSURE IN HPA 1024.5 1024.4 1018.7 1014.8 1014.1 1003.2 1000.1 998.7 1007.6 1020.9 1021.8 1026.4 1026.4 DAY-HOUR 12- 6 15- 6 20- 6 8- 6 2- 3 3- 3 29- 3 15- 3 12-15 24-15 16- 3 5- 3 MIN. QFF PRESSURE IN HPA 1002.7 998.7 994.8 995.9 992.6 983.5 978.7 984.1 990.3 998.5 1000.7 1008.1 978.7 DAY-HOUR 7-12 29-12 24-12 19- 9 30-12 29-15 8-12 5-21 1-12 8-12 19-21 30-12 PRESSURE AT HOUR 0000 UTC. MEAN QFE PRESSURE IN HPA 842.8 842.2 837.5 839.4 841.0 836.8 834.5 835.5 840.5 844.0 844.3 844.4 840.2 MAX. QFE PRESSURE IN HPA 847.8 847.5 844.0 847.0 845.5 841.1 840.2 840.2 843.5 849.4 848.0 849.1 849.4 DAY 19 15 30 8 6 3 30 15 12 31 27 5 MIN. QFE PRESSURE IN HPA 837.6 837.9 828.3 834.4 835.7 831.1 828.5 831.0 835.0 839.3 835.2 838.1 828.3 DAY 8 10 12 11 31 30 3 6 4 8 20 30 MEAN QNH PRESSURE IN HPA 1015.9 1015.2 1009.6 1011.9 1013.8 1008.8 1006.2 1007.3 1013.1 1017.2 1017.5 1017.6 1012.9 MAX. QNH PRESSURE IN HPA 1021.6 1021.3 1017.2 1020.7 1019.0 1013.9 1012.8 1012.8 1016.6 1023.5 1021.9 1023.2 1023.5 DAY 19 15 30 8 6 3 30 15 12 31 27 5 MIN. QNH PRESSURE IN HPA 1009.8 1010.1 999.0 1006.1 1007.6 1002.2 999.2 1002.1 1006.8 1011.8 1007.0 1010.4 999.0 DAY 8 10 12 11 31 30 3 6 4 8 20 30 MEAN QFF PRESSURE IN HPA 1014.3 1011.6 1006.5 1005.1 1003.0 993.6 990.0 991.7 1000.4 1008.9 1013.5 1017.1 1004.6 MAX. QFF PRESSURE IN HPA 1020.5 1021.7 1015.7 1012.2 1011.2 1001.3 999.0 997.3 1004.1 1016.6 1019.3 1023.2 1023.2 DAY 29 15 21 8 2 3 30 15 13 25 27 6 MIN. QFF PRESSURE IN HPA 1005.4 1004.2 995.3 997.6 993.6 985.5 980.6 984.3 992.7 1000.4 1001.4 1011.2 980.6 DAY 8 29 12 19 31 30 3 6 2 8 20 20 PRESSURE AT HOUR 0300 UTC. MEAN QFE PRESSURE IN HPA 843.0 842.6 838.2 839.9 841.7 837.5 835.5 836.3 841.3 844.6 844.7 844.6 840.8 MAX. QFE PRESSURE IN HPA 848.2 847.8 844.5 846.6 845.8 842.1 841.0 840.3 844.5 849.4 848.3 849.6 849.6 DAY 19 15 30 8 6 3 29 15 12 31 16 5 MIN. QFE PRESSURE IN HPA 836.4 837.4 828.7 835.3 836.7 831.8 830.0 833.3 836.6 839.5 836.8 838.7 828.7 DAY 7 10 12 11 31 30 3 27 2 8 20 30 MEAN QNH PRESSURE IN HPA 1016.1 1015.6 1010.5 1012.5 1014.6 1009.6 1007.4 1008.3 1014.1 1017.9 1018.1 1017.9 1013.5 MAX. QNH PRESSURE IN HPA 1022.1 1021.6 1017.8 1020.3 1019.3 1015.0 1013.7 1012.9 1017.8 1023.5 1022.2 1023.7 1023.7 DAY 19 15 30 8 6 3 29 15 12 31 16 5 MIN. QNH PRESSURE IN HPA 1008.4 1009.6 999.4 1007.1 1008.7 1003.0 1000.9 1004.8 1008.6 1012.0 1008.9 1011.1 999.4 DAY 7 10 12 11 31 30 3 27 2 8 20 30 MEAN QFF PRESSURE IN HPA 1016.5 1013.6 1008.6 1006.7 1004.5 995.1 992.1 993.7 1002.8 1011.4 1015.7 1019.3 1006.7 MAX. QFF PRESSURE IN HPA 1022.9 1023.1 1017.3 1013.7 1014.1 1003.2 1000.1 998.7 1007.2 1018.6 1021.8 1026.4 1026.4 DAY 29 15 19 7 2 3 29 15 25 31 16 5 MIN. QFF PRESSURE IN HPA 1008.2 1004.8 997.6 999.4 995.8 986.6 983.7 988.5 994.2 1002.5 1005.6 1013.8 983.7 DAY 3 29 24 19 31 30 8 6 2 8 20 20 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ESFAHAN (40800) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 32 37 N LONGITUDE 51 40 E DATA PROCESSING CENTER ELEVATION 1550.4 M MEANS AND EXTREMES FOR THE YEAR 1960 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 0600 UTC. MEAN QFE PRESSURE IN HPA 844.2 843.6 839.1 840.5 842.4 838.1 835.9 836.9 842.1 845.6 845.7 845.7 841.6 MAX. QFE PRESSURE IN HPA 850.0 849.6 845.4 847.7 846.2 843.0 841.5 840.8 845.0 850.2 849.3 850.4 850.4 DAY 19 15 30 8 6 3 29 15 12 28 16 5 MIN. QFE PRESSURE IN HPA 837.6 839.0 830.3 836.4 837.1 832.2 826.5 833.8 837.8 840.4 838.5 839.7 826.5 DAY 7 29 12 11 31 30 23 27 4 8 20 30 MEAN QNH PRESSURE IN HPA 1017.4 1016.8 1011.5 1013.2 1015.4 1010.3 1007.8 1009.0 1015.0 1019.1 1019.2 1019.2 1014.5 MAX. QNH PRESSURE IN HPA 1024.2 1023.7 1018.9 1021.5 1019.8 1016.1 1014.3 1013.5 1018.4 1024.4 1023.4 1024.7 1024.7 DAY 19 15 30 8 6 3 29 15 12 28 16 5 MIN. QNH PRESSURE IN HPA 1009.8 1011.4 1001.3 1008.4 1009.2 1003.5 996.9 1005.4 1010.0 1013.0 1010.8 1012.2 996.9 DAY 7 29 12 11 31 30 23 27 4 8 20 30 MEAN QFF PRESSURE IN HPA 1017.2 1014.3 1009.0 1006.8 1004.5 995.3 992.0 993.4 1002.6 1011.2 1015.8 1019.9 1006.8 MAX. QFF PRESSURE IN HPA 1024.5 1024.4 1018.7 1014.8 1013.2 1002.6 999.8 997.9 1006.3 1018.4 1021.7 1026.2 1026.2 DAY 12 15 20 8 2 3 29 31 24 28 12 5 MIN. QFF PRESSURE IN HPA 1010.1 1003.9 998.0 999.3 996.4 986.2 982.2 989.5 995.2 1002.6 1006.5 1014.1 982.2 DAY 27 29 24 19 31 30 23 12 2 8 19 30 PRESSURE AT HOUR 0900 UTC. MEAN QFE PRESSURE IN HPA 842.7 842.6 838.0 839.5 841.1 837.1 835.2 835.9 840.9 844.4 844.3 844.2 840.5 MAX. QFE PRESSURE IN HPA 848.6 848.1 844.9 846.4 844.7 842.5 840.0 839.2 844.2 849.0 848.4 849.6 849.6 DAY 19 2 30 7 6 2 17 14 12 30 26 6 MIN. QFE PRESSURE IN HPA 835.8 837.9 829.1 834.0 836.5 831.2 829.5 832.1 836.2 839.4 837.7 837.6 829.1 DAY 7 29 12 19 31 30 8 27 2 8 19 30 MEAN QNH PRESSURE IN HPA 1015.7 1015.6 1010.2 1012.0 1013.9 1009.2 1007.0 1007.8 1013.6 1017.7 1017.6 1017.5 1013.1 MAX. QNH PRESSURE IN HPA 1022.6 1022.0 1018.3 1020.0 1018.0 1015.5 1012.6 1011.6 1017.5 1023.0 1022.3 1023.7 1023.7 DAY 19 2 30 7 6 2 17 14 12 30 26 6 MIN. QNH PRESSURE IN HPA 1007.7 1010.1 999.9 1005.6 1008.5 1002.3 1000.4 1003.4 1008.2 1011.9 1009.9 1009.8 999.9 DAY 7 29 12 19 31 30 8 27 2 8 19 30 MEAN QFF PRESSURE IN HPA 1014.2 1012.1 1007.2 1005.0 1002.6 993.7 990.6 991.5 1000.5 1008.9 1013.5 1016.9 1004.7 MAX. QFF PRESSURE IN HPA 1020.6 1022.3 1016.4 1011.2 1011.3 1002.1 998.5 995.9 1004.3 1015.3 1018.4 1023.6 1023.6 DAY 12 2 20 7 2 2 2 14 24 28 26 5 MIN. QFF PRESSURE IN HPA 1006.2 1003.3 995.9 995.9 994.8 985.6 981.3 987.3 992.3 1001.3 1004.4 1009.4 981.3 DAY 7 22 12 19 30 30 8 12 2 8 19 30 PRESSURE AT HOUR 1200 UTC. MEAN QFE PRESSURE IN HPA 841.4 840.6 836.4 838.2 839.3 835.3 833.2 834.2 839.1 843.0 842.9 843.1 838.9 MAX. QFE PRESSURE IN HPA 847.0 846.9 844.0 845.0 843.3 841.2 838.3 838.2 844.7 850.0 847.0 848.6 850.0 DAY 19 15 20 7 7 2 30 14 12 24 26 5 MIN. QFE PRESSURE IN HPA 833.4 834.0 829.0 833.2 834.7 829.6 827.5 831.0 834.4 837.4 834.6 836.8 827.5 DAY 7 29 11 14 30 30 8 26 1 8 19 30 MEAN QNH PRESSURE IN HPA 1014.2 1013.3 1008.3 1010.4 1011.8 1007.1 1004.7 1005.8 1011.6 1016.0 1015.9 1016.1 1011.3 MAX. QNH PRESSURE IN HPA 1020.7 1020.6 1017.2 1018.4 1016.4 1014.0 1010.6 1010.5 1018.0 1024.2 1020.7 1022.6 1024.2 DAY 19 15 20 7 7 2 30 14 12 24 26 5 MIN. QNH PRESSURE IN HPA 1004.9 1005.6 999.8 1004.7 1006.4 1000.5 998.0 1002.1 1006.1 1009.6 1006.3 1008.9 998.0 DAY 7 29 11 14 30 30 8 26 1 8 19 30 MEAN QFF PRESSURE IN HPA 1012.6 1009.6 1005.2 1003.7 1000.8 991.6 988.5 990.0 998.9 1007.8 1011.9 1015.6 1003.0 MAX. QFF PRESSURE IN HPA 1019.5 1020.2 1016.1 1009.9 1009.0 1000.7 997.5 995.2 1005.7 1019.5 1017.4 1022.6 1022.6 DAY 29 15 20 7 1 2 31 30 12 24 16 6 MIN. QFF PRESSURE IN HPA 1002.7 998.7 994.8 996.0 992.6 984.1 978.7 985.6 990.3 998.5 1001.1 1008.1 978.7 DAY 7 29 24 19 30 29 8 6 1 8 19 30 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ESFAHAN (40800) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 32 37 N LONGITUDE 51 40 E DATA PROCESSING CENTER ELEVATION 1550.4 M MEANS AND EXTREMES FOR THE YEAR 1960 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 1500 UTC. MEAN QFE PRESSURE IN HPA 842.0 841.2 836.7 838.5 839.1 834.5 832.7 833.5 839.0 842.9 843.0 843.2 838.9 MAX. QFE PRESSURE IN HPA 847.0 847.1 842.7 845.1 843.3 840.9 838.5 838.2 844.6 850.0 847.2 848.7 850.0 DAY 19 15 29 7 7 2 29 14 12 24 26 5 MIN. QFE PRESSURE IN HPA 833.6 834.4 829.4 833.0 834.7 828.8 827.3 830.3 834.6 837.8 836.3 838.1 827.3 DAY 7 29 11 19 20 30 2 26 1 8 19 30 MEAN QNH PRESSURE IN HPA 1014.9 1014.0 1008.7 1010.9 1011.5 1006.2 1004.1 1005.1 1011.4 1015.9 1016.1 1016.3 1011.2 MAX. QNH PRESSURE IN HPA 1020.7 1020.8 1015.7 1018.5 1016.4 1013.6 1010.8 1010.5 1017.9 1024.2 1021.0 1022.7 1024.2 DAY 19 15 29 7 7 2 29 14 12 24 26 5 MIN. QNH PRESSURE IN HPA 1005.1 1006.1 1000.2 1004.4 1006.4 999.5 997.8 1001.3 1006.3 1010.0 1008.3 1010.4 997.8 DAY 7 29 11 19 20 30 2 26 1 8 19 30 MEAN QFF PRESSURE IN HPA 1015.2 1011.8 1006.8 1005.1 1001.3 991.2 988.7 990.3 1000.1 1009.3 1013.8 1017.6 1004.3 MAX. QFF PRESSURE IN HPA 1021.0 1021.3 1014.9 1010.4 1011.0 1001.4 997.1 995.8 1007.6 1020.9 1018.7 1024.6 1024.6 DAY 29 15 15 7 1 2 29 14 12 24 26 5 MIN. QFF PRESSURE IN HPA 1004.1 1000.3 997.2 997.2 993.7 983.5 979.4 985.2 992.0 1001.0 1003.9 1012.1 979.4 DAY 7 29 11 19 31 29 8 6 1 8 19 30 PRESSURE AT HOUR 1800 UTC. MEAN QFE PRESSURE IN HPA 842.9 842.7 838.0 839.9 840.7 835.9 834.0 834.9 840.2 843.6 844.0 844.1 840.1 MAX. QFE PRESSURE IN HPA 848.0 847.9 843.7 847.4 845.3 841.4 839.7 839.8 842.8 848.5 847.6 849.4 849.4 DAY 19 15 29 7 8 2 29 14 24 30 26 5 MIN. QFE PRESSURE IN HPA 835.5 837.6 829.6 835.2 836.0 830.1 828.0 831.0 835.0 839.1 836.0 838.1 828.0 DAY 7 9 11 18 30 29 8 5 3 7 19 30 MEAN QNH PRESSURE IN HPA 1016.0 1015.7 1010.2 1012.5 1013.4 1007.8 1005.6 1006.6 1012.8 1016.8 1017.3 1017.3 1012.7 MAX. QNH PRESSURE IN HPA 1021.9 1021.8 1016.9 1021.2 1018.7 1014.2 1012.2 1012.3 1015.8 1022.5 1021.4 1023.5 1023.5 DAY 19 15 29 7 8 2 29 14 24 30 26 5 MIN. QNH PRESSURE IN HPA 1007.3 1009.8 1000.5 1007.0 1007.9 1001.1 998.6 1002.1 1006.8 1011.5 1007.9 1010.4 998.6 DAY 7 9 11 18 30 29 8 5 3 7 19 30 MEAN QFF PRESSURE IN HPA 1015.7 1013.0 1007.7 1006.2 1002.4 992.8 989.9 991.0 1000.5 1009.0 1013.9 1018.0 1005.0 MAX. QFF PRESSURE IN HPA 1021.7 1022.3 1015.4 1014.1 1011.7 1001.2 998.4 997.0 1004.9 1016.4 1018.8 1024.1 1024.1 DAY 12 14 15 7 1 2 29 14 24 30 11 5 MIN. QFF PRESSURE IN HPA 1006.4 1005.1 998.0 998.8 994.6 984.6 980.6 985.2 992.2 1000.8 1002.8 1012.3 980.6 DAY 7 28 11 18 30 29 8 5 1 7 19 30 PRESSURE AT HOUR 2100 UTC. MEAN QFE PRESSURE IN HPA 842.8 842.2 838.1 840.0 840.9 836.5 835.0 835.4 840.6 844.0 844.2 844.3 840.3 MAX. QFE PRESSURE IN HPA 847.0 847.4 844.0 847.4 845.7 841.7 840.1 840.1 843.4 849.4 848.0 849.2 849.4 DAY 18 14 29 7 5 2 28 14 10 30 26 5 MIN. QFE PRESSURE IN HPA 836.0 835.4 828.5 834.6 836.4 831.0 828.5 831.0 835.0 839.2 834.7 838.8 828.5 DAY 7 29 11 10 30 30 2 5 3 10 19 29 MEAN QNH PRESSURE IN HPA 1015.8 1015.1 1010.4 1012.5 1013.6 1008.5 1006.8 1007.2 1013.2 1017.3 1017.5 1017.6 1013.0 MAX. QNH PRESSURE IN HPA 1020.7 1021.2 1017.2 1021.2 1019.2 1014.6 1012.7 1012.7 1016.5 1023.5 1021.9 1023.3 1023.5 DAY 18 14 29 7 5 2 28 14 10 30 26 5 MIN. QNH PRESSURE IN HPA 1007.9 1007.2 999.2 1006.3 1008.4 1002.1 999.2 1002.1 1006.8 1011.6 1006.4 1011.2 999.2 DAY 7 29 11 10 30 30 2 5 3 10 19 29 MEAN QFF PRESSURE IN HPA 1014.3 1011.5 1007.4 1005.6 1002.2 993.1 990.6 990.9 1000.2 1008.6 1013.3 1017.0 1004.6 MAX. QFF PRESSURE IN HPA 1020.1 1021.2 1016.5 1012.8 1010.3 1001.4 998.2 996.8 1003.8 1016.3 1018.6 1022.8 1022.8 DAY 28 14 20 7 1 2 30 14 30 30 11 4 MIN. QFF PRESSURE IN HPA 1003.9 1000.2 996.8 997.6 994.2 985.0 981.1 984.1 991.5 1000.1 1000.7 1011.6 981.1 DAY 7 29 11 18 30 30 8 5 1 10 19 19 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ESFAHAN (40800) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 32 37 N LONGITUDE 51 40 E DATA PROCESSING CENTER ELEVATION 1550.4 M MEANS AND EXTREMES FOR THE YEAR 1961 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AIR TEMPERATURE (C) 2.7 4.7 10.1 13.2 22.4 26.6 29.8 26.7 24.7 16.8 9.1 6.1 16.1 MINIMUN AIR TEMPERATURE (C) -2.9 -1.7 4.0 7.9 14.7 18.0 21.2 18.0 16.1 8.5 2.6 -0.2 8.8 DAYS WITH MINIMUM TEMP. >=21 0 0 0 0 0 5 17 7 0 0 0 0 29 DAYS WITH MINIMUM TEMP. <=-4 16 8 0 0 0 0 0 0 0 0 2 2 28 DAYS WITH FREEZING MIN.<= 0 26 22 7 0 0 0 0 0 0 0 6 18 79 TEMPERATURE RECORDS LOWEST(C) -9.0 -7.0 -1.0 2.0 8.0 10.0 18.0 16.0 12.0 3.0 -5.0 -4.0 -9.0 DAY 9 3 4 3 31 1 2 11 24 30 27 18 MAXIMUM AIR TEMPERATURE (C) 8.8 11.3 16.5 19.0 29.4 33.7 37.0 34.0 33.0 24.8 16.2 13.0 23.1 DAYS WITH MAXIMUM TEMP. >=30 0 0 0 0 18 27 31 31 28 2 0 0 137 DAYS WITH MAXIMUM TEMP. <= 0 0 0 0 0 0 0 0 0 0 0 0 0 0 TEMPERATURE RECORDS HIGHEST(C) 15.0 17.0 23.0 28.0 34.0 37.0 40.0 38.0 36.0 31.0 22.0 16.0 40.0 DAY 21 28 24 27 24 6 10 1 1 2 5 9 DIF. BETWEEN (MAX.-MIN.) (C) 11.7 13.0 12.5 11.1 14.7 15.7 15.8 16.0 16.9 16.3 13.6 13.2 14.3 MEAN DAILY TEMP. (MDT) (C) 2.9 4.8 10.3 13.4 22.0 25.8 29.1 26.0 24.5 16.6 9.4 6.4 15.9 COOLING DEG. DAYS(BASE 21 0C) 0.0 0.0 0.0 0.0 49.0 146.0 252.0 154.5 106.5 1.5 0.0 0.0 709.5 HEATING DEG. DAYS(BASE 18 0C) 467.0 370.5 239.5 148.5 3.0 0.0 0.0 0.0 0.0 57.5 258.5 359.0 1903.5 DEWPOINT (MEAN C) -4.7 -3.9 -6.1 2.0 4.3 2.9 3.8 6.2 3.7 0.4 -2.1 -3.2 0.3 MIXING RATIO (G/KG) 3.44 3.54 3.11 5.52 6.45 5.79 6.37 7.38 6.28 4.85 4.14 3.71 5.05 VAPOUR PRESSURE (HPA) 4.63 4.75 4.16 7.37 8.61 7.73 8.45 9.81 8.36 6.52 5.57 4.99 6.75 SATURATION DEF. (HPA) 3.13 4.28 8.78 8.78 19.62 28.63 35.20 26.69 24.35 13.80 6.61 4.81 15.39 RELATIVE HUMIDITY (MEAN %) 61 58 35 52 34 23 21 29 28 36 50 55 40 RELATIVE HUMIDITY (MAX. %) 80 81 56 75 53 38 34 44 43 54 74 76 59 RELATIVE HUMIDITY (MIN. %) 41 37 18 31 21 15 12 18 16 23 31 35 25 RELATIVE HUMIDITY (MEAN% 03UTC) 62 71 50 68 48 35 32 41 41 48 64 68 52 RELATIVE HUMIDITY (MEAN% 09UTC) 58 47 27 41 24 17 15 23 21 27 39 43 32 RELATIVE HUMIDITY (MEAN% 15UTC) 59 49 26 41 28 17 15 22 21 30 45 46 33 RH=0 => RELATIVE HUMIDITY < 0.5% AMOUNT OF PRECIPITATION MM. 22.4 9.0 11.1 58.6 2.0 0.0 0.0 0.0 0.0 0.0 11.9 6.0 121.0 DAYS WITH PRECIPITATION >=10 0 0 1 1 0 0 0 0 0 0 1 0 3 DAYS WITH PRECIPITATION >= 5 1 1 1 5 0 0 0 0 0 0 1 1 10 DAYS WITH PRECIPITATION >= 1 7 2 2 8 2 0 0 0 0 0 1 1 23 DAYS WITH PRECIPITATION 9 4 3 13 2 0 0 0 0 0 3 4 38 GREATEST DAILY PRECIPITATION 9.0 6.0 10.0 21.3 1.0 0.0 0.0 0.0 0.0 0.0 11.0 6.0 21.3 DAY 21 2 12 8 14 ** ** ** ** ** 12 14 DAY WITH THUNDER STORM 0 0 0 3 0 0 0 0 0 0 0 0 3 DAYS WITH SNOW OR SLEET 1 1 0 0 0 0 0 0 0 0 0 0 2 DAYS WITH DUST 0 1 4 0 4 2 1 0 0 0 0 0 12 WIND DIRECTION (PREVAILING) 270 270 270 270 270 270 270 270 90 90 270 270 270 PREVAILING WIND SPEED(KNOTS) 6.0 7.7 10.4 6.9 6.6 6.3 4.5 4.3 5.0 4.3 5.0 5.2 6.5 PREVAILING WIND PERCENT 24.7 35.3 49.0 36.8 50.0 34.6 24.7 20.2 28.3 29.0 31.3 35.9 32.0 CALMS PERCENT OF WIND 25.1 13.8 10.1 13.0 7.3 10.0 14.2 9.3 16.3 24.6 22.9 30.2 16.4 NO. OF WIND OBSERVATION 247 224 247 239 248 240 247 248 240 248 240 248 2916 VECTOR WIND DIRECTION (MEAN) 268 253 256 285 275 292 103 108 74 105 239 245 261 VECTOR WIND MAGNITUDE(KNOTS) 0.9 2.5 5.8 2.2 3.7 1.7 1.0 0.9 0.5 0.6 1.2 1.7 1.4 WIND STEADINESES (MEAN %) 23.7 46.3 66.7 39.3 59.7 30.4 21.3 18.0 10.2 18.8 33.3 47.2 28.0 WIND SPEED (MEAN KNOTS) 3.8 5.4 8.7 5.6 6.2 5.6 4.7 5.0 4.9 3.2 3.6 3.6 5.0 FASTEST WIND DIRECTION 270 230 270 270 270 270 180 50 270 270 270 270 270 FASTEST WIND SPEED (KNOTS) 26 35 40 25 28 25 18 20 19 13 25 24 40 DAY 22 25 8 14 28 6 5 6 18 17 24 14 DAYS WITH SKY CLEAR (0-2)/8 11 13 13 7 21 27 24 31 30 30 17 17 241 DAYS WITH P.CLOUDY (3-6)/8 11 13 15 10 7 3 7 0 0 1 10 11 88 DAYS WITH CLOUDY (7-8)/8 9 2 3 13 3 0 0 0 0 0 3 3 36 DAYS WITH VISIBILITY =< 2 KM 1 2 0 0 2 0 2 3 0 0 1 0 11 DURATION OF SUNSHINE HOURS ****** ****** ****** ****** ****** ****** ****** ****** 186.5 308.9 234.4 165.0 ****** ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ESFAHAN (40800) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 32 37 N LONGITUDE 51 40 E DATA PROCESSING CENTER ELEVATION 1550.4 M MEANS AND EXTREMES FOR THE YEAR 1961 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL MEAN QFE PRESSURE IN HPA 842.3 840.5 838.5 839.5 839.4 838.2 834.7 837.5 837.2 843.7 843.3 842.2 839.7 MAX. QFE PRESSURE IN HPA 849.5 849.0 849.5 847.0 845.3 844.7 841.5 843.6 843.2 850.0 850.2 850.8 850.8 DAY-HOUR 10- 6 22- 6 4- 6 26- 6 2- 6 10- 6 24- 6 10- 6 29- 6 28- 6 1- 6 3- 6 MIN. QFE PRESSURE IN HPA 835.8 832.5 828.9 833.0 830.8 829.5 828.1 830.3 831.8 837.0 836.3 832.0 828.1 DAY-HOUR 21-15 2-12 13- 0 1-12 29-12 6-12 11-15 1-12 11-15 1-15 23- 0 22-12 MEAN QNH PRESSURE IN HPA 1015.2 1013.1 1010.8 1012.0 1011.8 1010.5 1006.4 1009.7 1009.3 1016.9 1016.5 1015.1 1012.3 MAX. QNH PRESSURE IN HPA 1023.6 1023.0 1023.6 1020.7 1018.7 1018.0 1014.3 1016.8 1016.3 1024.2 1024.4 1025.1 1025.1 DAY-HOUR 10- 6 22- 6 4- 6 26- 6 2- 6 10- 6 24- 6 10- 6 29- 6 28- 6 1- 6 3- 6 MIN. QNH PRESSURE IN HPA 1007.7 1003.8 999.7 1004.4 1001.9 1000.4 998.7 1001.3 1003.0 1009.1 1008.3 1003.3 998.7 DAY-HOUR 21-15 2-12 13- 0 1-12 29-12 6-12 11-15 1-12 11-15 1-15 23- 0 22-12 MEAN QFF PRESSURE IN HPA 1016.4 1013.0 1007.1 1006.1 1000.2 996.5 990.5 995.5 996.2 1008.9 1013.4 1014.0 1004.8 MAX. QFF PRESSURE IN HPA 1028.8 1024.5 1023.8 1017.1 1010.2 1006.6 999.3 1003.3 1004.8 1020.1 1022.6 1025.5 1028.8 DAY-HOUR 10- 6 22- 6 4- 6 18- 6 2- 3 10- 6 24- 6 10- 6 29- 6 28- 6 29- 6 3- 6 MIN. QFF PRESSURE IN HPA 1003.1 1003.8 995.7 997.9 989.9 984.4 981.6 984.0 988.8 996.6 1002.8 999.6 981.6 DAY-HOUR 21-12 14- 0 9- 0 28-12 28-12 6-12 15- 0 1-12 11-12 2-12 23- 0 22-12 PRESSURE AT HOUR 0000 UTC. MEAN QFE PRESSURE IN HPA 842.4 840.2 838.5 839.4 839.5 838.4 834.8 837.7 837.4 843.6 843.3 842.3 839.8 MAX. QFE PRESSURE IN HPA 847.9 846.9 846.7 845.5 844.4 842.8 839.1 841.0 841.2 848.2 848.5 849.2 849.2 DAY 10 22 4 21 2 10 25 10 25 28 1 4 MIN. QFE PRESSURE IN HPA 837.6 835.3 828.9 833.3 833.1 834.1 829.5 832.8 834.6 838.4 836.3 834.0 828.9 DAY 27 17 13 9 29 7 15 7 2 2 23 22 MEAN QNH PRESSURE IN HPA 1015.3 1012.8 1010.8 1011.9 1012.0 1010.7 1006.5 1009.9 1009.5 1016.8 1016.5 1015.2 1012.3 MAX. QNH PRESSURE IN HPA 1021.8 1020.6 1020.4 1019.0 1017.7 1015.8 1011.5 1013.7 1014.0 1022.1 1022.5 1023.3 1023.3 DAY 10 22 4 21 2 10 25 10 25 28 1 4 MIN. QNH PRESSURE IN HPA 1009.8 1007.1 999.7 1004.8 1004.5 1005.7 1000.4 1004.2 1006.3 1010.7 1008.3 1005.6 999.7 DAY 27 17 13 9 29 7 15 7 2 2 23 22 MEAN QFF PRESSURE IN HPA 1015.8 1012.3 1006.5 1005.7 1000.3 996.7 990.3 995.4 996.0 1008.3 1013.0 1013.5 1004.5 MAX. QFF PRESSURE IN HPA 1025.5 1020.6 1018.6 1013.9 1009.2 1003.9 997.0 999.8 1001.5 1017.6 1020.0 1022.4 1025.5 DAY 10 22 4 18 2 10 3 10 29 28 30 3 MIN. QFF PRESSURE IN HPA 1006.0 1003.8 995.7 999.1 991.9 990.6 981.6 987.5 990.8 998.1 1002.8 1001.0 981.6 DAY 21 14 9 8 29 6 15 1 2 2 23 22 PRESSURE AT HOUR 0300 UTC. MEAN QFE PRESSURE IN HPA 842.6 840.8 839.0 839.9 840.2 839.2 835.6 838.4 838.0 844.2 843.6 842.5 840.3 MAX. QFE PRESSURE IN HPA 848.8 847.5 847.6 846.0 845.1 843.1 839.8 842.0 841.9 849.0 848.9 849.1 849.1 DAY 10 22 4 21 2 10 24 10 29 28 1 3 MIN. QFE PRESSURE IN HPA 837.7 835.0 829.3 833.2 833.4 834.6 831.0 833.0 834.8 838.7 837.4 834.0 829.3 DAY 3 17 13 8 30 6 11 1 22 3 23 22 MEAN QNH PRESSURE IN HPA 1015.6 1013.5 1011.5 1012.5 1012.8 1011.7 1007.5 1010.8 1010.2 1017.5 1016.8 1015.5 1013.0 MAX. QNH PRESSURE IN HPA 1022.8 1021.3 1021.4 1019.6 1018.5 1016.2 1012.3 1014.9 1014.8 1023.0 1022.9 1023.2 1023.2 DAY 10 22 4 21 2 10 24 10 29 28 1 3 MIN. QNH PRESSURE IN HPA 1009.9 1006.8 1000.1 1004.7 1004.9 1006.3 1002.1 1004.4 1006.5 1011.1 1009.6 1005.6 1000.1 DAY 3 17 13 8 30 6 11 1 22 3 23 22 MEAN QFF PRESSURE IN HPA 1017.5 1014.3 1008.5 1007.3 1002.0 998.3 992.1 997.3 998.1 1010.6 1014.7 1015.4 1006.3 MAX. QFF PRESSURE IN HPA 1027.7 1023.9 1020.4 1015.8 1010.2 1005.5 998.2 1001.8 1004.3 1019.9 1021.5 1024.9 1027.7 DAY 10 22 4 18 2 10 3 26 29 28 30 3 MIN. QFF PRESSURE IN HPA 1006.6 1006.5 997.7 999.7 994.4 991.3 985.0 988.9 994.0 1001.3 1003.0 1002.3 985.0 DAY 21 25 9 8 29 6 15 1 11 3 23 22 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ESFAHAN (40800) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 32 37 N LONGITUDE 51 40 E DATA PROCESSING CENTER ELEVATION 1550.4 M MEANS AND EXTREMES FOR THE YEAR 1961 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 0600 UTC. MEAN QFE PRESSURE IN HPA 843.7 842.1 840.2 840.8 840.7 839.7 836.1 839.2 838.8 845.3 844.7 843.6 841.2 MAX. QFE PRESSURE IN HPA 849.5 849.0 849.5 847.0 845.3 844.7 841.5 843.6 843.2 850.0 850.2 850.8 850.8 DAY 10 22 4 26 2 10 24 10 29 28 1 3 MIN. QFE PRESSURE IN HPA 837.8 836.2 830.8 833.4 832.4 834.4 831.7 834.0 835.6 840.0 838.5 834.5 830.8 DAY 3 17 13 8 30 6 11 7 11 1 23 22 MEAN QNH PRESSURE IN HPA 1016.8 1015.0 1012.8 1013.5 1013.4 1012.3 1008.1 1011.6 1011.2 1018.8 1018.1 1016.7 1014.0 MAX. QNH PRESSURE IN HPA 1023.6 1023.0 1023.6 1020.7 1018.7 1018.0 1014.3 1016.8 1016.3 1024.2 1024.4 1025.1 1025.1 DAY 10 22 4 26 2 10 24 10 29 28 1 3 MIN. QNH PRESSURE IN HPA 1010.0 1008.2 1001.9 1004.9 1003.7 1006.1 1002.9 1005.6 1007.5 1012.6 1010.8 1006.2 1001.9 DAY 3 17 13 8 30 6 11 7 11 1 23 22 MEAN QFF PRESSURE IN HPA 1018.8 1015.3 1009.4 1007.6 1002.0 998.4 992.2 997.5 998.4 1010.8 1015.2 1016.1 1006.8 MAX. QFF PRESSURE IN HPA 1028.8 1024.5 1023.8 1017.1 1009.8 1006.6 999.3 1003.3 1004.8 1020.1 1022.6 1025.5 1028.8 DAY 10 22 4 18 2 10 24 10 29 28 29 3 MIN. QFF PRESSURE IN HPA 1008.2 1007.0 999.9 1000.8 993.0 990.4 985.4 989.6 993.9 1000.3 1004.9 1003.0 985.4 DAY 21 17 13 29 28 6 11 1 5 1 23 22 PRESSURE AT HOUR 0900 UTC. MEAN QFE PRESSURE IN HPA 842.4 841.0 838.9 839.8 839.7 838.7 835.3 838.1 837.7 844.1 843.7 842.6 840.2 MAX. QFE PRESSURE IN HPA 847.5 848.0 847.6 845.5 844.7 844.0 839.9 842.1 841.5 848.4 849.0 849.4 849.4 DAY 10 22 4 21 2 10 24 10 25 31 1 3 MIN. QFE PRESSURE IN HPA 837.7 834.0 830.3 833.2 831.2 832.2 830.4 832.2 834.7 839.2 837.0 833.6 830.3 DAY 3 2 13 8 30 6 10 7 11 2 23 22 MEAN QNH PRESSURE IN HPA 1015.4 1013.8 1011.3 1012.3 1012.2 1011.1 1007.1 1010.4 1009.9 1017.4 1016.8 1015.6 1012.8 MAX. QNH PRESSURE IN HPA 1021.3 1021.9 1021.4 1019.0 1018.0 1017.2 1012.5 1015.0 1014.3 1022.3 1023.0 1023.5 1023.5 DAY 10 22 4 21 2 10 24 10 25 31 1 3 MIN. QNH PRESSURE IN HPA 1009.9 1005.6 1001.3 1004.7 1002.3 1003.5 1001.4 1003.5 1006.4 1011.6 1009.1 1005.1 1001.3 DAY 3 2 13 8 30 6 10 7 11 2 23 22 MEAN QFF PRESSURE IN HPA 1016.1 1013.2 1007.0 1006.2 999.8 996.7 990.9 995.7 996.2 1008.5 1013.1 1013.8 1004.8 MAX. QFF PRESSURE IN HPA 1024.7 1022.4 1020.4 1015.0 1008.4 1004.9 997.4 1000.6 1001.8 1017.4 1020.8 1022.4 1024.7 DAY 10 22 4 18 2 10 3 10 25 31 3 3 MIN. QFF PRESSURE IN HPA 1006.9 1004.8 998.1 999.7 991.1 987.4 984.0 986.6 991.3 999.3 1002.9 1000.5 984.0 DAY 21 17 13 28 28 6 10 7 5 2 23 22 PRESSURE AT HOUR 1200 UTC. MEAN QFE PRESSURE IN HPA 841.0 839.3 837.0 838.4 838.0 837.1 833.5 836.4 835.7 842.5 842.3 841.2 838.5 MAX. QFE PRESSURE IN HPA 846.3 846.6 845.3 844.0 844.2 842.4 838.4 840.2 840.3 847.0 847.2 847.7 847.7 DAY 10 22 4 26 14 10 24 10 29 28 1 3 MIN. QFE PRESSURE IN HPA 835.9 832.5 830.3 833.0 830.8 829.5 829.1 830.3 831.9 837.3 836.4 832.0 829.1 DAY 21 2 13 1 29 6 10 1 11 1 23 22 MEAN QNH PRESSURE IN HPA 1013.8 1011.8 1009.0 1010.7 1010.3 1009.1 1005.0 1008.3 1007.5 1015.5 1015.2 1013.9 1010.8 MAX. QNH PRESSURE IN HPA 1019.9 1020.3 1018.7 1017.2 1017.5 1015.4 1010.7 1012.8 1012.9 1020.7 1021.0 1021.5 1021.5 DAY 10 22 4 26 14 10 24 10 29 28 1 3 MIN. QNH PRESSURE IN HPA 1007.8 1003.8 1001.3 1004.4 1001.9 1000.4 999.9 1001.3 1003.2 1009.4 1008.4 1003.3 999.9 DAY 21 2 13 1 29 6 10 1 11 1 23 22 MEAN QFF PRESSURE IN HPA 1014.2 1011.0 1004.7 1004.4 998.4 994.9 988.8 993.7 993.9 1006.9 1011.7 1012.2 1002.9 MAX. QFF PRESSURE IN HPA 1023.2 1020.0 1017.6 1012.5 1008.1 1002.7 994.8 998.9 1000.4 1016.0 1019.4 1020.5 1023.2 DAY 10 22 4 18 14 10 24 10 29 31 29 3 MIN. QFF PRESSURE IN HPA 1003.1 1006.1 996.7 997.9 989.9 984.4 982.3 984.0 988.8 996.6 1003.8 999.6 982.3 DAY 21 15 30 28 28 6 10 1 11 2 23 22 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ESFAHAN (40800) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 32 37 N LONGITUDE 51 40 E DATA PROCESSING CENTER ELEVATION 1550.4 M MEANS AND EXTREMES FOR THE YEAR 1961 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 1500 UTC. MEAN QFE PRESSURE IN HPA 841.4 839.6 837.4 838.6 837.9 836.6 833.2 835.8 835.5 842.4 842.7 841.4 838.5 MAX. QFE PRESSURE IN HPA 846.7 846.6 845.2 843.4 843.7 841.5 838.2 839.6 839.9 847.2 847.0 848.3 848.3 DAY 10 22 4 26 14 10 24 26 29 31 1 3 MIN. QFE PRESSURE IN HPA 835.8 833.8 830.8 833.4 830.9 830.1 828.1 830.4 831.8 837.0 836.4 832.8 828.1 DAY 21 2 13 1 29 6 11 1 11 1 23 22 MEAN QNH PRESSURE IN HPA 1014.2 1012.1 1009.5 1010.9 1010.1 1008.7 1004.7 1007.7 1007.3 1015.4 1015.7 1014.2 1010.9 MAX. QNH PRESSURE IN HPA 1020.4 1020.3 1018.6 1016.5 1016.9 1014.3 1010.5 1012.1 1012.5 1021.0 1020.7 1022.2 1022.2 DAY 10 22 4 26 14 10 24 26 29 31 1 3 MIN. QNH PRESSURE IN HPA 1007.7 1005.4 1001.9 1004.9 1002.0 1001.1 998.7 1001.4 1003.0 1009.1 1008.4 1004.2 998.7 DAY 21 2 13 1 29 6 11 1 11 1 23 22 MEAN QFF PRESSURE IN HPA 1016.0 1012.6 1006.5 1005.7 999.1 995.1 989.3 994.1 995.1 1008.5 1013.5 1014.0 1004.1 MAX. QFF PRESSURE IN HPA 1024.8 1021.8 1018.0 1012.5 1007.4 1002.8 995.8 999.0 1002.0 1018.3 1020.5 1023.6 1024.8 DAY 10 22 4 18 14 10 2 26 29 31 29 3 MIN. QFF PRESSURE IN HPA 1004.1 1007.1 999.4 1000.1 990.4 986.8 981.9 986.0 989.9 998.8 1003.3 1002.1 981.9 DAY 21 13 12 29 28 6 11 1 10 1 23 22 PRESSURE AT HOUR 1800 UTC. MEAN QFE PRESSURE IN HPA 842.4 840.5 838.5 839.7 839.3 837.8 834.4 837.1 837.0 843.5 843.2 842.0 839.6 MAX. QFE PRESSURE IN HPA 847.4 847.0 846.6 844.5 844.4 841.9 839.7 841.1 840.8 848.0 847.8 849.0 849.0 DAY 9 21 3 20 14 23 24 9 24 28 1 3 MIN. QFE PRESSURE IN HPA 838.3 834.2 830.3 834.3 832.8 832.5 829.8 832.1 833.7 837.9 837.0 834.3 829.8 DAY 30 2 13 1 29 6 10 7 11 1 23 22 MEAN QNH PRESSURE IN HPA 1015.4 1013.1 1010.9 1012.2 1011.8 1010.0 1006.0 1009.2 1009.1 1016.7 1016.3 1014.9 1012.1 MAX. QNH PRESSURE IN HPA 1021.2 1020.7 1020.3 1017.8 1017.7 1014.8 1012.2 1013.9 1013.5 1021.9 1021.6 1023.0 1023.0 DAY 9 21 3 20 14 23 24 9 24 28 1 3 MIN. QNH PRESSURE IN HPA 1010.6 1005.8 1001.3 1005.9 1004.2 1003.8 1000.7 1003.4 1005.2 1010.1 1009.1 1005.9 1000.7 DAY 30 2 13 1 29 6 10 7 11 1 23 22 MEAN QFF PRESSURE IN HPA 1017.1 1013.2 1007.4 1006.3 1000.3 996.1 990.1 995.2 996.3 1008.9 1013.4 1014.2 1004.9 MAX. QFF PRESSURE IN HPA 1026.5 1021.4 1019.3 1015.0 1008.7 1002.5 997.6 1000.5 1002.2 1018.4 1021.5 1023.6 1026.5 DAY 9 22 3 17 1 9 24 12 24 31 29 2 MIN. QFF PRESSURE IN HPA 1010.2 1006.3 998.3 1000.0 991.6 989.4 983.2 987.2 991.1 999.6 1004.4 1003.8 983.2 DAY 20 13 13 29 28 6 14 7 5 1 23 22 PRESSURE AT HOUR 2100 UTC. MEAN QFE PRESSURE IN HPA 842.4 840.5 838.7 839.8 839.6 838.2 834.8 837.7 837.3 843.9 843.4 842.1 839.9 MAX. QFE PRESSURE IN HPA 847.4 846.6 846.6 844.8 844.8 842.0 839.6 841.1 841.2 848.5 848.3 849.5 849.5 DAY 9 21 3 20 13 9 24 9 25 31 2 3 MIN. QFE PRESSURE IN HPA 837.6 834.8 830.0 834.1 833.5 833.1 829.5 832.8 834.4 838.1 837.0 834.2 829.5 DAY 26 2 12 1 28 6 14 6 5 1 23 21 MEAN QNH PRESSURE IN HPA 1015.3 1013.2 1011.1 1012.3 1012.1 1010.4 1006.6 1009.9 1009.5 1017.1 1016.5 1015.0 1012.4 MAX. QNH PRESSURE IN HPA 1021.2 1020.3 1020.3 1018.2 1018.2 1014.9 1012.1 1013.9 1014.0 1022.5 1022.2 1023.6 1023.6 DAY 9 21 3 20 13 9 24 9 25 31 2 3 MIN. QNH PRESSURE IN HPA 1009.8 1006.5 1000.9 1005.7 1005.0 1004.5 1000.4 1004.2 1006.1 1010.4 1009.1 1005.8 1000.4 DAY 26 2 12 1 28 6 14 6 5 1 23 21 MEAN QFF PRESSURE IN HPA 1016.2 1012.4 1006.8 1006.1 1000.0 996.0 990.3 995.2 996.0 1008.4 1012.8 1013.2 1004.5 MAX. QFF PRESSURE IN HPA 1024.4 1021.1 1018.7 1014.3 1008.6 1003.1 996.6 999.6 1001.5 1019.0 1020.5 1022.3 1024.4 DAY 9 22 3 17 1 9 2 9 29 31 29 2 MIN. QFF PRESSURE IN HPA 1008.7 1004.7 997.9 999.7 991.3 988.8 982.1 987.7 991.2 998.1 1004.0 1001.3 982.1 DAY 26 13 12 29 28 6 14 6 1 1 23 21 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ESFAHAN (40800) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 32 37 N LONGITUDE 51 40 E DATA PROCESSING CENTER ELEVATION 1550.4 M MEANS AND EXTREMES FOR THE YEAR 1962 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AIR TEMPERATURE (C) 3.4 8.7 13.0 14.4 21.3 26.4 27.9 26.1 21.9 16.5 7.6 5.3 16.0 MINIMUN AIR TEMPERATURE (C) -2.0 1.8 6.0 7.0 13.6 17.9 19.9 17.9 13.4 8.8 1.1 -0.8 8.7 DAYS WITH MINIMUM TEMP. >=21 0 0 0 0 0 4 11 3 1 0 0 0 19 DAYS WITH MINIMUM TEMP. <=-4 11 1 0 0 0 0 0 0 0 0 7 7 26 DAYS WITH FREEZING MIN.<= 0 24 11 2 0 0 0 0 0 0 0 13 23 73 TEMPERATURE RECORDS LOWEST(C) -6.0 -4.0 -1.0 3.0 7.0 11.0 17.0 14.0 5.0 5.0 -6.0 -7.0 -7.0 DAY 19 13 14 14 2 13 21 12 27 14 25 1 MAXIMUM AIR TEMPERATURE (C) 9.3 15.3 19.9 20.6 28.0 33.5 35.3 33.5 30.0 25.4 15.8 11.9 23.2 DAYS WITH MAXIMUM TEMP. >=30 0 0 0 0 13 29 31 30 16 0 0 0 119 DAYS WITH MAXIMUM TEMP. <= 0 0 0 0 0 0 0 0 0 0 0 0 0 0 TEMPERATURE RECORDS HIGHEST(C) 15.0 22.0 27.0 24.0 33.0 36.0 38.0 37.0 36.0 28.0 23.0 17.0 38.0 DAY 6 17 25 4 26 24 4 3 12 8 1 7 DIF. BETWEEN (MAX.-MIN.) (C) 11.3 13.5 13.9 13.6 14.4 15.6 15.4 15.6 16.6 16.6 14.7 12.7 14.5 MEAN DAILY TEMP. (MDT) (C) 3.7 8.5 12.9 13.8 20.8 25.7 27.6 25.7 21.7 17.1 8.5 5.6 16.0 COOLING DEG. DAYS(BASE 21 0C) 0.0 0.0 0.0 0.0 39.5 142.0 204.5 146.5 57.5 0.0 0.0 0.0 590.0 HEATING DEG. DAYS(BASE 18 0C) 444.5 265.5 159.0 126.5 11.0 0.0 0.0 0.0 12.0 37.5 286.0 385.5 1727.5 DEWPOINT (MEAN C) -4.1 -3.9 -3.7 0.7 -0.4 -0.1 1.3 2.2 -3.9 -2.9 -4.9 -4.4 -2.0 MIXING RATIO (G/KG) 3.47 3.66 3.67 5.09 4.58 4.82 5.16 5.53 3.68 3.78 3.52 3.54 4.21 VAPOUR PRESSURE (HPA) 4.67 4.91 4.92 6.79 6.13 6.43 6.89 7.39 4.94 5.11 4.75 4.78 5.64 SATURATION DEF. (HPA) 3.44 6.86 10.78 10.33 20.43 29.28 32.48 28.02 23.07 14.96 6.45 4.49 15.88 RELATIVE HUMIDITY (MEAN %) 61 46 35 44 27 20 20 23 20 31 46 54 36 RELATIVE HUMIDITY (MAX. %) 80 70 58 65 43 34 38 40 36 66 80 76 57 RELATIVE HUMIDITY (MIN. %) 41 27 20 27 14 11 11 14 10 14 22 35 21 RELATIVE HUMIDITY (MEAN% 03UTC) 67 61 49 60 39 30 29 32 30 41 59 65 47 RELATIVE HUMIDITY (MEAN% 09UTC) 52 36 26 38 18 14 14 18 17 20 34 43 28 RELATIVE HUMIDITY (MEAN% 15UTC) 55 35 26 34 21 14 13 16 13 21 34 46 27 RH=0 => RELATIVE HUMIDITY < 0.5% AMOUNT OF PRECIPITATION MM. 6.0 4.0 1.0 54.0 2.1 0.0 0.0 0.0 0.0 0.0 3.1 17.1 87.3 DAYS WITH PRECIPITATION >=10 0 0 0 2 0 0 0 0 0 0 0 0 2 DAYS WITH PRECIPITATION >= 5 0 0 0 3 0 0 0 0 0 0 0 1 4 DAYS WITH PRECIPITATION >= 1 3 2 1 7 1 0 0 0 0 0 1 4 19 DAYS WITH PRECIPITATION 7 6 2 7 7 0 1 0 0 1 2 6 39 GREATEST DAILY PRECIPITATION 3.0 3.0 1.0 30.0 2.0 0.0 0.0 0.0 0.0 0.0 3.0 9.0 30.0 DAY 16 8 1 21 7 ** ** ** ** ** 8 12 DAY WITH THUNDER STORM 0 0 0 2 0 0 0 0 0 0 0 0 2 DAYS WITH SNOW OR SLEET 4 0 0 0 0 0 0 0 0 0 0 0 4 DAYS WITH DUST 1 1 2 3 0 1 0 0 2 3 2 0 15 WIND DIRECTION (PREVAILING) 270 270 270 270 270 270 90 90 90 270 270 270 270 PREVAILING WIND SPEED(KNOTS) 4.9 7.2 8.2 6.9 6.0 5.9 5.5 6.5 5.2 7.5 3.8 4.5 6.1 PREVAILING WIND PERCENT 37.5 38.4 54.7 41.0 46.6 31.3 21.1 29.0 23.8 34.1 27.1 27.5 32.4 CALMS PERCENT OF WIND 30.6 19.6 13.0 19.2 14.2 16.3 19.8 25.4 30.4 24.8 33.8 35.2 23.5 NO. OF WIND OBSERVATION 248 224 247 239 247 240 247 248 240 246 240 247 2913 VECTOR WIND DIRECTION (MEAN) 266 239 271 247 273 305 86 97 99 270 273 243 259 VECTOR WIND MAGNITUDE(KNOTS) 1.7 3.6 4.4 2.3 2.5 1.0 1.5 1.6 0.8 2.3 0.7 1.1 1.2 WIND STEADINESES (MEAN %) 53.1 54.5 66.7 37.7 50.0 19.2 33.3 35.6 22.9 50.0 26.9 40.7 26.1 WIND SPEED (MEAN KNOTS) 3.2 6.6 6.6 6.1 5.0 5.2 4.5 4.5 3.5 4.6 2.6 2.7 4.6 FASTEST WIND DIRECTION 230 230 270 110 270 320 50 90 90 270 90 270 110 FASTEST WIND SPEED (KNOTS) 21 35 30 38 30 25 15 25 18 35 13 13 38 DAY 27 18 26 20 10 8 5 4 3 10 3 23 DAYS WITH SKY CLEAR (0-2)/8 17 11 14 9 21 28 26 28 28 20 21 12 235 DAYS WITH P.CLOUDY (3-6)/8 9 8 14 14 9 2 5 3 2 11 6 13 96 DAYS WITH CLOUDY (7-8)/8 5 9 3 7 1 0 0 0 0 0 3 6 34 DAYS WITH VISIBILITY =< 2 KM 2 1 0 2 1 1 0 2 0 1 0 0 10 DURATION OF SUNSHINE HOURS 224.9 203.6 ****** ****** 291.3 279.7 325.3 186.9 ****** ****** ****** ****** ****** ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ESFAHAN (40800) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 32 37 N LONGITUDE 51 40 E DATA PROCESSING CENTER ELEVATION 1550.4 M MEANS AND EXTREMES FOR THE YEAR 1962 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL MEAN QFE PRESSURE IN HPA 842.3 840.0 839.7 838.4 839.9 837.8 837.6 839.6 841.6 845.0 846.8 844.4 841.1 MAX. QFE PRESSURE IN HPA 851.5 847.6 848.4 845.0 845.9 845.3 843.1 846.1 850.2 850.9 853.6 849.6 853.6 DAY-HOUR 19- 6 11- 6 3- 6 19- 6 17- 6 2- 6 31- 6 9- 6 25-21 27- 6 24- 6 1- 6 MIN. QFE PRESSURE IN HPA 835.0 830.4 829.5 831.3 834.5 831.6 832.0 833.0 835.0 836.0 842.2 836.7 829.5 DAY-HOUR 27-12 20-15 28-12 5-12 26-12 9-12 13-15 2-15 16-15 10-12 14-15 9-12 MEAN QNH PRESSURE IN HPA 1015.3 1012.5 1012.2 1010.8 1012.4 1010.0 1009.7 1012.1 1014.4 1018.4 1020.5 1017.7 1013.8 MAX. QNH PRESSURE IN HPA 1026.0 1021.4 1022.3 1018.4 1019.4 1018.7 1016.2 1019.7 1024.4 1025.3 1028.4 1023.7 1028.4 DAY-HOUR 19- 6 11- 6 3- 6 19- 6 17- 6 2- 6 31- 6 9- 6 25-21 27- 6 24- 6 1- 6 MIN. QNH PRESSURE IN HPA 1006.8 1001.4 1000.4 1002.5 1006.2 1002.8 1003.3 1004.4 1006.8 1007.9 1015.1 1008.7 1000.4 DAY-HOUR 27-12 20-15 28-12 5-12 26-12 9-12 13-15 2-15 16-15 10-12 14-15 9-12 MEAN QFF PRESSURE IN HPA 1016.0 1009.7 1006.6 1004.0 1001.7 996.3 995.1 998.4 1003.4 1010.8 1018.6 1017.2 1006.5 MAX. QFF PRESSURE IN HPA 1029.5 1021.3 1020.5 1015.7 1010.5 1005.6 1003.0 1006.7 1017.6 1022.1 1030.6 1026.3 1030.6 DAY-HOUR 19- 6 11- 6 3- 6 19- 6 16- 6 2- 6 1- 6 9- 6 26- 3 12- 6 24- 0 1- 3 MIN. QFF PRESSURE IN HPA 1004.0 992.8 990.5 994.1 993.2 987.5 988.6 988.8 993.4 999.5 1009.3 1006.5 987.5 DAY-HOUR 27-12 18- 3 28- 0 5- 9 26-12 29-15 13-12 2-15 16-12 9-12 3-21 9-12 PRESSURE AT HOUR 0000 UTC. MEAN QFE PRESSURE IN HPA 842.2 840.0 839.6 838.6 839.9 838.1 837.8 839.8 841.6 845.2 846.8 844.5 841.2 MAX. QFE PRESSURE IN HPA 850.0 845.7 846.4 843.1 844.8 844.1 842.2 844.5 849.4 850.7 852.4 848.5 852.4 DAY 19 11 4 19 17 2 31 9 26 28 24 1 MIN. QFE PRESSURE IN HPA 837.2 831.6 830.0 833.8 835.9 832.2 834.3 834.5 836.3 838.6 843.8 838.6 830.0 DAY 5 18 28 5 10 29 14 3 17 11 4 9 MEAN QNH PRESSURE IN HPA 1015.1 1012.6 1012.2 1011.0 1012.4 1010.4 1010.0 1012.3 1014.5 1018.6 1020.5 1017.8 1013.9 MAX. QNH PRESSURE IN HPA 1024.2 1019.2 1020.0 1016.2 1018.2 1017.3 1015.1 1017.8 1023.5 1025.0 1027.0 1022.5 1027.0 DAY 19 11 4 19 17 2 31 9 26 28 24 1 MIN. QNH PRESSURE IN HPA 1009.3 1002.8 1000.9 1005.4 1007.8 1003.5 1005.9 1006.2 1008.3 1010.9 1017.0 1010.9 1000.9 DAY 5 18 28 5 10 29 14 3 17 11 4 9 MEAN QFF PRESSURE IN HPA 1015.3 1009.1 1006.2 1004.0 1001.6 996.5 995.2 998.4 1002.9 1010.5 1018.3 1016.7 1006.2 MAX. QFF PRESSURE IN HPA 1026.4 1018.1 1017.4 1013.3 1008.1 1004.3 1001.5 1003.9 1014.7 1019.7 1030.6 1023.6 1030.6 DAY 19 11 4 19 17 2 27 9 26 28 24 1 MIN. QFF PRESSURE IN HPA 1007.1 993.2 990.5 997.0 995.5 988.1 990.8 991.1 995.3 1002.9 1009.8 1008.4 988.1 DAY 6 18 28 5 10 30 15 21 17 10 2 9 PRESSURE AT HOUR 0300 UTC. MEAN QFE PRESSURE IN HPA 842.4 840.3 840.1 838.9 840.4 838.8 838.5 840.4 842.1 845.5 847.0 844.6 841.6 MAX. QFE PRESSURE IN HPA 850.4 845.4 847.0 843.9 845.4 844.4 842.9 844.9 849.5 850.3 852.4 849.1 852.4 DAY 19 1 3 19 17 2 31 9 26 28 24 1 MIN. QFE PRESSURE IN HPA 837.2 830.6 830.4 833.9 835.6 834.1 834.7 835.6 836.8 839.0 844.2 838.6 830.4 DAY 5 18 28 5 11 29 14 21 17 11 4 9 MEAN QNH PRESSURE IN HPA 1015.3 1013.0 1012.7 1011.3 1013.0 1011.2 1010.8 1013.0 1015.0 1019.0 1020.7 1017.9 1014.4 MAX. QNH PRESSURE IN HPA 1024.7 1018.9 1020.7 1017.1 1018.9 1017.7 1015.9 1018.3 1023.6 1024.6 1027.0 1023.2 1027.0 DAY 19 1 3 19 17 2 31 9 26 28 24 1 MIN. QNH PRESSURE IN HPA 1009.3 1001.6 1001.4 1005.5 1007.5 1005.7 1006.4 1007.5 1008.9 1011.4 1017.5 1010.9 1001.4 DAY 5 18 28 5 11 29 14 21 17 11 4 9 MEAN QFF PRESSURE IN HPA 1016.8 1010.8 1007.9 1005.4 1003.1 997.7 996.4 999.8 1004.9 1012.0 1019.4 1018.3 1007.7 MAX. QFF PRESSURE IN HPA 1028.4 1019.3 1019.7 1015.3 1010.4 1004.8 1001.7 1005.8 1017.6 1018.4 1028.7 1026.3 1028.7 DAY 19 11 3 19 16 2 31 10 26 28 24 1 MIN. QFF PRESSURE IN HPA 1008.2 992.8 992.4 997.1 996.2 991.0 992.1 992.9 996.5 1002.9 1012.7 1010.2 991.0 DAY 29 18 28 5 26 29 14 21 12 11 4 9 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ESFAHAN (40800) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 32 37 N LONGITUDE 51 40 E DATA PROCESSING CENTER ELEVATION 1550.4 M MEANS AND EXTREMES FOR THE YEAR 1962 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 0600 UTC. MEAN QFE PRESSURE IN HPA 843.6 841.5 841.2 839.9 841.2 839.5 838.9 841.0 843.0 846.3 847.9 845.5 842.5 MAX. QFE PRESSURE IN HPA 851.5 847.6 848.4 845.0 845.9 845.3 843.1 846.1 849.5 850.9 853.6 849.6 853.6 DAY 19 11 3 19 17 2 31 9 25 27 24 1 MIN. QFE PRESSURE IN HPA 838.0 832.0 829.9 832.8 836.2 834.8 835.9 835.5 837.4 840.0 844.8 839.0 829.9 DAY 5 18 28 5 10 29 14 21 17 10 2 9 MEAN QNH PRESSURE IN HPA 1016.8 1014.3 1014.0 1012.4 1014.0 1012.0 1011.3 1013.7 1016.1 1019.9 1021.8 1019.0 1015.4 MAX. QNH PRESSURE IN HPA 1026.0 1021.4 1022.3 1018.4 1019.4 1018.7 1016.2 1019.7 1023.6 1025.3 1028.4 1023.7 1028.4 DAY 19 11 3 19 17 2 31 9 25 27 24 1 MIN. QNH PRESSURE IN HPA 1010.3 1003.3 1000.8 1004.2 1008.2 1006.5 1007.8 1007.3 1009.6 1012.6 1018.2 1011.4 1000.8 DAY 5 18 28 5 10 29 14 21 17 10 2 9 MEAN QFF PRESSURE IN HPA 1018.1 1012.0 1008.9 1005.7 1003.2 998.4 996.9 1000.4 1005.4 1012.9 1020.1 1018.9 1008.4 MAX. QFF PRESSURE IN HPA 1029.5 1021.3 1020.5 1015.7 1010.5 1005.6 1003.0 1006.7 1016.6 1022.1 1029.3 1026.2 1029.5 DAY 19 11 3 19 16 2 1 9 26 12 24 1 MIN. QFF PRESSURE IN HPA 1009.1 995.8 991.7 995.6 996.0 991.6 992.8 993.0 996.0 1003.8 1011.9 1009.7 991.6 DAY 27 18 28 5 10 29 3 21 12 10 3 9 PRESSURE AT HOUR 0900 UTC. MEAN QFE PRESSURE IN HPA 842.7 840.5 840.2 838.9 840.2 838.4 837.9 840.2 842.1 845.2 846.9 844.7 841.5 MAX. QFE PRESSURE IN HPA 850.0 847.0 847.8 843.8 845.1 843.6 842.4 845.1 849.4 850.2 852.4 849.0 852.4 DAY 19 11 3 19 16 2 31 9 25 27 24 1 MIN. QFE PRESSURE IN HPA 836.2 833.4 829.9 831.4 835.2 833.6 834.6 835.0 836.7 837.6 843.6 838.0 829.9 DAY 5 18 28 5 10 29 14 21 17 10 7 9 MEAN QNH PRESSURE IN HPA 1015.7 1013.2 1012.8 1011.3 1012.8 1010.7 1010.1 1012.8 1015.0 1018.6 1020.6 1018.0 1014.3 MAX. QNH PRESSURE IN HPA 1024.2 1020.7 1021.6 1017.0 1018.5 1016.8 1015.4 1018.5 1023.5 1024.4 1027.0 1023.0 1027.0 DAY 19 11 3 19 16 2 31 9 25 27 24 1 MIN. QNH PRESSURE IN HPA 1008.2 1004.9 1000.8 1002.6 1007.0 1005.1 1006.3 1006.8 1008.7 1009.8 1016.8 1010.3 1000.8 DAY 5 18 28 5 10 29 14 21 17 10 7 9 MEAN QFF PRESSURE IN HPA 1015.9 1009.9 1006.6 1004.1 1001.6 996.7 994.9 998.6 1003.4 1010.2 1018.2 1017.0 1006.4 MAX. QFF PRESSURE IN HPA 1026.2 1020.3 1018.4 1013.6 1009.5 1004.0 999.6 1004.9 1014.0 1019.5 1027.9 1024.3 1027.9 DAY 19 11 3 19 16 11 31 9 26 28 22 1 MIN. QFF PRESSURE IN HPA 1006.1 998.1 991.6 994.1 994.3 989.1 990.7 990.9 995.4 999.9 1010.3 1008.0 989.1 DAY 22 20 28 5 25 29 15 3 12 10 7 9 PRESSURE AT HOUR 1200 UTC. MEAN QFE PRESSURE IN HPA 841.3 838.8 838.4 837.3 838.9 836.8 836.5 838.5 840.5 843.7 846.0 843.5 840.0 MAX. QFE PRESSURE IN HPA 848.7 845.3 844.8 842.0 844.2 842.7 840.2 844.0 847.9 848.7 851.6 847.6 851.6 DAY 19 2 3 23 17 2 27 9 30 27 23 1 MIN. QFE PRESSURE IN HPA 835.0 831.9 829.5 831.3 834.5 831.6 832.4 833.3 835.2 836.0 842.6 836.7 829.5 DAY 27 20 28 5 26 9 13 21 16 10 14 9 MEAN QNH PRESSURE IN HPA 1014.1 1011.2 1010.7 1009.4 1011.3 1008.9 1008.5 1010.8 1013.2 1016.8 1019.6 1016.6 1012.6 MAX. QNH PRESSURE IN HPA 1022.7 1018.7 1018.2 1014.9 1017.5 1015.7 1012.8 1017.2 1021.8 1022.7 1026.1 1021.4 1026.1 DAY 19 2 3 23 17 2 27 9 30 27 23 1 MIN. QNH PRESSURE IN HPA 1006.8 1003.2 1000.4 1002.5 1006.2 1002.8 1003.7 1004.8 1007.0 1007.9 1015.6 1008.7 1000.4 DAY 27 20 28 5 26 9 13 21 16 10 14 9 MEAN QFF PRESSURE IN HPA 1014.2 1007.7 1004.7 1002.4 1000.4 995.1 993.7 996.8 1001.7 1008.9 1017.5 1015.5 1004.9 MAX. QFF PRESSURE IN HPA 1024.2 1017.3 1015.2 1009.4 1007.6 1002.6 1000.1 1003.7 1013.7 1016.8 1029.2 1022.9 1029.2 DAY 19 10 3 19 16 2 26 9 30 28 23 1 MIN. QFF PRESSURE IN HPA 1004.0 997.3 991.5 994.8 993.2 987.7 988.6 988.9 993.4 999.5 1009.3 1006.5 987.7 DAY 27 20 28 5 26 29 13 21 16 9 1 9 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ESFAHAN (40800) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 32 37 N LONGITUDE 51 40 E DATA PROCESSING CENTER ELEVATION 1550.4 M MEANS AND EXTREMES FOR THE YEAR 1962 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 1500 UTC. MEAN QFE PRESSURE IN HPA 841.7 839.1 838.6 837.2 838.9 836.2 836.0 837.9 840.2 844.0 846.2 843.8 840.0 MAX. QFE PRESSURE IN HPA 849.0 845.5 846.0 841.9 844.2 842.5 839.8 844.2 848.0 849.1 851.7 847.8 851.7 DAY 19 2 3 23 17 2 27 9 25 27 23 1 MIN. QFE PRESSURE IN HPA 836.0 830.4 830.1 831.9 834.6 831.6 832.0 833.0 835.0 837.4 842.2 837.4 830.1 DAY 22 20 28 5 26 29 13 2 16 10 14 9 MEAN QNH PRESSURE IN HPA 1014.6 1011.5 1010.9 1009.3 1011.3 1008.1 1008.0 1010.1 1012.8 1017.2 1019.7 1017.0 1012.5 MAX. QNH PRESSURE IN HPA 1023.0 1019.0 1019.6 1014.8 1017.5 1015.5 1012.3 1017.5 1021.9 1023.2 1026.2 1021.6 1026.2 DAY 19 2 3 23 17 2 27 9 25 27 23 1 MIN. QNH PRESSURE IN HPA 1007.9 1001.4 1001.1 1003.2 1006.3 1002.8 1003.3 1004.4 1006.8 1009.6 1015.1 1009.6 1001.1 DAY 22 20 28 5 26 29 13 2 16 10 14 9 MEAN QFF PRESSURE IN HPA 1015.8 1009.3 1006.0 1003.3 1001.3 994.6 993.6 996.9 1002.7 1010.2 1018.5 1017.3 1005.8 MAX. QFF PRESSURE IN HPA 1026.5 1019.1 1018.2 1010.3 1008.0 1002.8 999.1 1005.6 1014.8 1016.8 1027.0 1025.4 1027.0 DAY 19 10 3 18 16 2 26 9 25 27 24 1 MIN. QFF PRESSURE IN HPA 1006.2 996.9 993.5 995.8 993.9 987.5 988.7 988.8 994.2 1002.3 1011.6 1008.4 987.5 DAY 29 20 28 5 26 29 13 2 12 9 2 9 PRESSURE AT HOUR 1800 UTC. MEAN QFE PRESSURE IN HPA 842.5 839.8 839.5 838.2 839.7 836.9 837.3 839.1 841.4 845.0 846.7 844.3 840.9 MAX. QFE PRESSURE IN HPA 850.0 845.4 846.0 842.9 844.4 842.0 841.2 844.7 849.8 850.2 852.0 848.0 852.0 DAY 18 11 3 18 16 2 30 9 25 27 23 1 MIN. QFE PRESSURE IN HPA 836.8 830.5 831.0 833.9 836.1 831.8 833.4 833.0 836.2 839.4 842.4 838.6 830.5 DAY 22 20 28 5 25 29 13 2 16 10 14 9 MEAN QNH PRESSURE IN HPA 1015.5 1012.3 1012.0 1010.4 1012.2 1009.0 1009.4 1011.5 1014.2 1018.4 1020.3 1017.6 1013.6 MAX. QNH PRESSURE IN HPA 1024.2 1018.9 1019.6 1015.9 1017.7 1014.9 1014.0 1018.0 1024.0 1024.4 1026.5 1021.9 1026.5 DAY 18 11 3 18 16 2 30 9 25 27 23 1 MIN. QNH PRESSURE IN HPA 1008.9 1001.5 1002.1 1005.5 1008.0 1003.0 1004.9 1004.4 1008.2 1011.9 1015.4 1010.9 1001.5 DAY 22 20 28 5 25 29 13 2 16 10 14 9 MEAN QFF PRESSURE IN HPA 1016.7 1010.0 1006.7 1003.7 1001.4 995.3 995.1 998.3 1003.6 1011.4 1018.8 1017.6 1006.5 MAX. QFF PRESSURE IN HPA 1027.6 1019.4 1017.4 1012.8 1007.9 1001.9 1000.1 1005.8 1015.7 1017.3 1027.8 1024.3 1027.8 DAY 18 11 3 18 16 11 1 9 25 29 24 1 MIN. QFF PRESSURE IN HPA 1007.3 994.4 994.8 997.2 995.2 987.6 990.1 990.8 994.8 1003.3 1010.2 1009.2 987.6 DAY 27 20 28 11 25 29 4 3 12 9 3 9 PRESSURE AT HOUR 2100 UTC. MEAN QFE PRESSURE IN HPA 842.5 839.9 839.8 838.6 840.0 838.0 837.8 839.8 841.8 845.3 846.9 844.5 841.2 MAX. QFE PRESSURE IN HPA 850.1 845.7 846.4 843.0 844.7 844.0 841.9 844.4 850.2 850.6 852.4 848.4 852.4 DAY 18 10 3 18 16 1 30 8 25 27 23 1 MIN. QFE PRESSURE IN HPA 837.0 831.1 830.7 834.2 835.9 832.1 834.3 835.2 836.7 839.7 843.5 838.0 830.7 DAY 22 20 27 4 25 29 14 2 16 10 3 9 MEAN QNH PRESSURE IN HPA 1015.4 1012.4 1012.3 1011.0 1012.6 1010.2 1010.0 1012.3 1014.7 1018.7 1020.6 1017.8 1014.0 MAX. QNH PRESSURE IN HPA 1024.3 1019.2 1020.0 1016.1 1018.0 1017.2 1014.8 1017.7 1024.4 1024.9 1027.0 1022.3 1027.0 DAY 18 10 3 18 16 1 30 8 25 27 23 1 MIN. QNH PRESSURE IN HPA 1009.1 1002.2 1001.8 1005.8 1007.8 1003.4 1005.9 1007.0 1008.7 1012.2 1016.6 1010.3 1001.8 DAY 22 20 27 4 25 29 14 2 16 10 3 9 MEAN QFF PRESSURE IN HPA 1015.7 1009.1 1006.1 1003.9 1001.3 996.1 994.9 998.1 1003.2 1010.2 1018.1 1016.7 1006.1 MAX. QFF PRESSURE IN HPA 1026.1 1018.7 1017.2 1012.8 1007.9 1003.8 999.5 1005.0 1015.6 1021.1 1028.7 1023.8 1028.7 DAY 18 10 3 18 16 1 26 9 25 27 22 1 MIN. QFF PRESSURE IN HPA 1006.1 994.9 992.3 996.4 993.9 987.6 990.4 991.3 994.4 1001.8 1009.3 1007.6 987.6 DAY 5 20 27 10 25 29 15 2 11 10 3 9 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ESFAHAN (40800) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 32 37 N LONGITUDE 51 40 E DATA PROCESSING CENTER ELEVATION 1550.4 M MEANS AND EXTREMES FOR THE YEAR 1963 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AIR TEMPERATURE (C) 6.2 9.1 10.6 16.4 18.5 27.3 30.3 29.0 23.9 18.7 9.8 2.4 16.9 MINIMUN AIR TEMPERATURE (C) -0.5 2.7 4.1 9.3 11.8 18.7 21.7 20.6 15.0 10.9 3.9 -3.9 9.5 DAYS WITH MINIMUM TEMP. >=21 0 0 0 0 0 5 25 16 0 0 0 0 46 DAYS WITH MINIMUM TEMP. <=-4 3 0 1 0 0 0 0 0 0 0 0 15 19 DAYS WITH FREEZING MIN.<= 0 20 6 3 0 0 0 0 0 0 0 6 25 60 TEMPERATURE RECORDS LOWEST(C) -5.0 -3.0 -5.0 5.0 7.0 13.0 18.0 17.0 12.0 6.0 -3.0 -13.0 -13.0 DAY 8 4 9 1 3 1 5 28 11 30 30 29 MAXIMUM AIR TEMPERATURE (C) 13.4 15.4 17.5 23.1 25.3 34.6 37.5 36.3 31.8 25.9 16.5 9.4 23.9 DAYS WITH MAXIMUM TEMP. >=30 0 0 0 0 5 30 31 31 26 2 0 0 125 DAYS WITH MAXIMUM TEMP. <= 0 0 0 0 0 0 0 0 0 0 0 0 5 5 TEMPERATURE RECORDS HIGHEST(C) 18.0 21.0 23.0 26.0 32.0 37.0 40.0 39.0 36.0 30.0 23.0 15.0 40.0 DAY 31 24 24 8 25 10 8 10 5 1 1 1 DIF. BETWEEN (MAX.-MIN.) (C) 13.9 12.7 13.4 13.8 13.5 15.9 15.8 15.7 16.8 15.0 12.6 13.3 14.4 MEAN DAILY TEMP. (MDT) (C) 6.4 9.1 10.8 16.2 18.5 26.7 29.6 28.4 23.4 18.4 10.2 2.8 16.7 COOLING DEG. DAYS(BASE 21 0C) 0.0 0.0 0.0 0.0 12.5 170.0 265.5 230.5 75.0 2.0 0.0 0.0 755.5 HEATING DEG. DAYS(BASE 18 0C) 358.5 250.5 223.0 58.5 32.5 0.0 0.0 0.0 0.0 17.5 234.0 472.5 1647.0 DEWPOINT (MEAN C) ***** ***** -7.4 -0.5 0.6 -0.6 3.5 0.7 -2.2 0.6 -0.9 -6.7 ***** MIXING RATIO (G/KG) ****** ****** 2.92 4.55 4.96 4.54 6.18 5.06 4.09 4.83 4.43 2.87 ****** VAPOUR PRESSURE (HPA) ****** ****** 3.91 6.08 6.63 6.07 8.20 6.74 5.49 6.50 5.97 3.87 ****** SATURATION DEF. (HPA) ****** ****** 9.47 13.26 15.71 31.64 36.63 35.00 25.72 15.97 6.72 4.01 ****** RELATIVE HUMIDITY (MEAN %) *** *** 33 34 35 18 20 18 20 32 51 55 *** RELATIVE HUMIDITY (MAX. %) *** *** 56 52 52 30 32 30 35 49 71 74 *** RELATIVE HUMIDITY (MIN. %) *** *** 15 19 19 9 12 10 11 19 31 36 *** RELATIVE HUMIDITY (MEAN% 03UTC) *** *** 47 50 48 29 31 28 32 46 68 65 *** RELATIVE HUMIDITY (MEAN% 09UTC) *** *** 22 25 24 12 14 13 14 23 38 45 *** RELATIVE HUMIDITY (MEAN% 15UTC) *** *** 24 26 27 12 16 12 14 26 41 50 *** RH=0 => RELATIVE HUMIDITY < 0.5% AMOUNT OF PRECIPITATION MM. 1.0 5.0 3.3 1.0 16.1 0.0 0.0 0.0 1.0 0.0 9.8 11.0 48.2 DAYS WITH PRECIPITATION >=10 0 0 0 0 0 0 0 0 0 0 0 0 0 DAYS WITH PRECIPITATION >= 5 0 0 0 0 0 0 0 0 0 0 1 0 1 DAYS WITH PRECIPITATION >= 1 1 2 1 1 8 0 0 0 1 0 2 5 21 DAYS WITH PRECIPITATION 1 3 3 5 13 1 0 1 1 0 4 6 38 GREATEST DAILY PRECIPITATION 1.0 4.0 3.0 1.0 4.0 0.0 0.0 0.0 1.0 0.0 6.2 3.0 6.2 DAY 25 12 27 24 13 ** ** ** 10 ** 12 4 DAY WITH THUNDER STORM 0 1 0 0 2 0 0 1 1 0 0 0 5 DAYS WITH SNOW OR SLEET 0 0 0 0 0 0 0 0 0 0 0 4 4 DAYS WITH DUST 0 2 4 3 2 1 0 1 2 2 0 1 18 WIND DIRECTION (PREVAILING) 90 270 270 270 270 270 270 90 90 270 270 270 270 PREVAILING WIND SPEED(KNOTS) 3.6 8.4 13.9 9.7 9.7 6.2 7.9 8.2 5.4 6.8 5.1 8.6 8.6 PREVAILING WIND PERCENT 17.7 33.5 53.6 47.5 48.0 41.3 22.2 31.0 23.8 29.0 14.6 25.8 30.5 CALMS PERCENT OF WIND 40.3 27.2 10.5 15.4 15.3 14.2 17.7 11.7 19.6 24.2 47.5 37.1 23.4 NO. OF WIND OBSERVATION 248 224 248 240 248 240 248 248 240 248 240 248 2920 VECTOR WIND DIRECTION (MEAN) 184 248 263 255 265 295 155 106 108 270 300 237 253 VECTOR WIND MAGNITUDE(KNOTS) 0.3 3.5 8.3 5.3 5.0 1.7 0.8 3.7 0.8 1.7 0.3 2.3 1.9 WIND STEADINESES (MEAN %) 10.7 58.3 74.8 67.1 66.7 30.9 12.9 57.8 16.0 37.0 12.5 48.9 32.8 WIND SPEED (MEAN KNOTS) 2.8 6.0 11.1 7.9 7.5 5.5 6.2 6.4 5.0 4.6 2.4 4.7 5.8 FASTEST WIND DIRECTION 270 230 210 180 270 90 270 90 360 270 310 230 230 FASTEST WIND SPEED (KNOTS) 15 45 45 40 35 35 35 40 30 25 13 40 45 DAY 26 28 16 11 29 29 3 22 9 30 1 10 DAYS WITH SKY CLEAR (0-2)/8 13 8 16 6 10 28 27 28 27 19 17 22 221 DAYS WITH P.CLOUDY (3-6)/8 15 15 12 13 12 2 4 3 3 10 10 5 104 DAYS WITH CLOUDY (7-8)/8 3 5 3 11 9 0 0 0 0 2 3 4 40 DAYS WITH VISIBILITY =< 2 KM 1 0 0 0 0 1 0 1 1 0 1 4 9 DURATION OF SUNSHINE HOURS ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ESFAHAN (40800) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 32 37 N LONGITUDE 51 40 E DATA PROCESSING CENTER ELEVATION 1550.4 M MEANS AND EXTREMES FOR THE YEAR 1963 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL MEAN QFE PRESSURE IN HPA ****** ****** 838.0 838.3 837.7 838.0 835.6 836.5 841.6 844.1 843.5 842.2 ****** MAX. QFE PRESSURE IN HPA ****** ****** 846.3 845.5 843.5 844.6 840.0 841.6 850.4 848.5 847.6 850.2 ****** DAY-HOUR **-** **-** 23- 6 2- 6 16- 6 2- 6 20- 6 20- 6 24- 6 12- 6 6- 6 21- 6 MIN. QFE PRESSURE IN HPA ****** ****** 832.6 829.8 830.4 831.2 830.8 831.6 833.8 840.5 838.9 830.2 ****** DAY-HOUR **-** **-** 5-12 16-12 11-12 15-15 12-15 7-15 9-12 28-12 16-12 31-12 MEAN QNH PRESSURE IN HPA ****** ****** 1010.2 1010.6 1009.8 1010.3 1007.5 1008.5 1014.4 1017.4 1016.6 1015.1 ****** MAX. QNH PRESSURE IN HPA ****** ****** 1019.9 1019.0 1016.6 1017.9 1012.6 1014.4 1024.7 1022.5 1021.4 1024.4 ****** DAY-HOUR **-** **-** 23- 6 2- 6 16- 6 2- 6 20- 6 20- 6 24- 6 12- 6 6- 6 21- 6 MIN. QNH PRESSURE IN HPA ****** ****** 1004.0 1000.7 1001.4 1002.3 1001.9 1002.8 1005.4 1013.2 1011.3 1001.2 ****** DAY-HOUR **-** **-** 5-12 16-12 11-12 15-15 12-15 7-15 9-12 28-12 16-12 31-12 MEAN QFF PRESSURE IN HPA ****** ****** 1006.2 1002.7 1000.7 996.0 991.3 993.1 1002.1 1008.2 1013.0 1016.7 ****** MAX. QFF PRESSURE IN HPA ****** ****** 1016.2 1013.6 1008.9 1005.5 996.3 999.7 1012.7 1014.9 1019.8 1031.0 ****** DAY-HOUR **-** **-** 23- 6 1-15 8- 6 2- 3 22- 6 20- 3 25- 3 12- 6 19- 6 27- 3 MIN. QFF PRESSURE IN HPA ****** ****** 995.8 993.9 993.6 988.0 985.7 986.3 991.9 1001.5 1004.3 999.5 ****** DAY-HOUR **-** **-** 31- 0 16-12 11-12 16-12 12-15 7-12 4-12 1-12 1-12 11- 0 PRESSURE AT HOUR 0000 UTC. MEAN QFE PRESSURE IN HPA ****** ****** 838.1 838.3 837.8 838.4 835.7 836.7 841.7 844.2 843.6 842.3 ****** MAX. QFE PRESSURE IN HPA ****** ****** 844.4 843.2 841.0 842.8 838.4 840.2 849.3 846.7 846.4 848.3 ****** DAY ** ** 23 2 8 2 20 20 25 12 6 21 MIN. QFE PRESSURE IN HPA ****** ****** 833.3 833.8 831.4 832.6 833.0 833.2 836.2 841.8 840.5 831.4 ****** DAY ** ** 31 16 11 16 9 11 4 1 22 31 MEAN QNH PRESSURE IN HPA ****** ****** 1010.3 1010.6 1010.0 1010.7 1007.5 1008.8 1014.5 1017.5 1016.7 1015.3 ****** MAX. QNH PRESSURE IN HPA ****** ****** 1017.7 1016.3 1013.7 1015.8 1010.7 1012.8 1023.4 1020.4 1020.0 1022.2 ****** DAY ** ** 23 2 8 2 20 20 25 12 6 21 MIN. QNH PRESSURE IN HPA ****** ****** 1004.8 1005.4 1002.6 1004.0 1004.4 1004.7 1008.2 1014.7 1013.2 1002.6 ****** DAY ** ** 31 16 11 16 9 11 4 1 22 31 MEAN QFF PRESSURE IN HPA ****** ****** 1005.9 1002.4 1000.6 996.3 991.1 993.1 1001.9 1007.8 1012.6 1016.1 ****** MAX. QFF PRESSURE IN HPA ****** ****** 1014.3 1010.7 1005.8 1003.9 994.7 998.4 1010.2 1012.8 1017.6 1029.5 ****** DAY ** ** 23 2 15 2 22 20 25 12 19 27 MIN. QFF PRESSURE IN HPA ****** ****** 995.8 996.8 995.9 989.6 986.9 987.6 994.0 1002.6 1005.6 999.5 ****** DAY ** ** 31 29 11 16 9 11 4 1 1 11 PRESSURE AT HOUR 0300 UTC. MEAN QFE PRESSURE IN HPA ****** ****** 838.4 838.8 838.4 839.1 836.6 837.6 842.3 844.9 844.0 842.5 ****** MAX. QFE PRESSURE IN HPA ****** ****** 845.2 844.2 842.8 843.8 839.8 840.8 849.8 847.4 846.8 848.8 ****** DAY ** ** 23 2 16 2 20 20 25 12 6 21 MIN. QFE PRESSURE IN HPA ****** ****** 833.5 834.0 832.1 833.2 834.0 834.6 836.8 842.7 840.6 831.4 ****** DAY ** ** 31 16 11 16 9 12 4 25 25 31 MEAN QNH PRESSURE IN HPA ****** ****** 1010.8 1011.2 1010.7 1011.6 1008.6 1009.7 1015.3 1018.3 1017.2 1015.5 ****** MAX. QNH PRESSURE IN HPA ****** ****** 1018.6 1017.5 1015.8 1017.0 1012.3 1013.5 1024.0 1021.2 1020.5 1022.8 ****** DAY ** ** 23 2 16 2 20 20 25 12 6 21 MIN. QNH PRESSURE IN HPA ****** ****** 1005.0 1005.6 1003.4 1004.7 1005.6 1006.3 1008.9 1015.7 1013.3 1002.6 ****** DAY ** ** 31 16 11 16 9 12 4 25 25 31 MEAN QFF PRESSURE IN HPA ****** ****** 1007.4 1004.2 1002.2 997.7 993.0 995.1 1004.0 1010.2 1014.4 1018.1 ****** MAX. QFF PRESSURE IN HPA ****** ****** 1015.7 1013.1 1007.8 1005.5 996.1 999.7 1012.7 1014.6 1019.3 1031.0 ****** DAY ** ** 23 2 8 2 20 20 25 12 30 27 MIN. QFF PRESSURE IN HPA ****** ****** 996.7 998.3 996.6 990.4 989.2 990.4 995.8 1005.2 1008.3 1001.8 ****** DAY ** ** 31 29 11 16 12 12 7 1 1 11 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ESFAHAN (40800) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 32 37 N LONGITUDE 51 40 E DATA PROCESSING CENTER ELEVATION 1550.4 M MEANS AND EXTREMES FOR THE YEAR 1963 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 0600 UTC. MEAN QFE PRESSURE IN HPA ****** ****** 839.5 839.7 838.9 839.7 837.1 838.2 843.2 845.9 845.0 843.6 ****** MAX. QFE PRESSURE IN HPA ****** ****** 846.3 845.5 843.5 844.6 840.0 841.6 850.4 848.5 847.6 850.2 ****** DAY ** ** 23 2 16 2 20 20 24 12 6 21 MIN. QFE PRESSURE IN HPA ****** ****** 835.4 833.8 832.0 833.8 834.4 835.2 837.2 843.6 841.5 831.4 ****** DAY ** ** 31 16 11 16 12 12 4 2 16 31 MEAN QNH PRESSURE IN HPA ****** ****** 1012.0 1012.2 1011.3 1012.2 1009.2 1010.4 1016.3 1019.4 1018.4 1016.8 ****** MAX. QNH PRESSURE IN HPA ****** ****** 1019.9 1019.0 1016.6 1017.9 1012.6 1014.4 1024.7 1022.5 1021.4 1024.4 ****** DAY ** ** 23 2 16 2 20 20 24 12 6 21 MIN. QNH PRESSURE IN HPA ****** ****** 1007.2 1005.4 1003.3 1005.4 1006.1 1007.0 1009.3 1016.8 1014.3 1002.6 ****** DAY ** ** 31 16 11 16 12 12 4 2 16 31 MEAN QFF PRESSURE IN HPA ****** ****** 1008.3 1004.4 1002.2 998.0 993.1 995.2 1004.2 1010.4 1015.2 1018.8 ****** MAX. QFF PRESSURE IN HPA ****** ****** 1016.2 1013.2 1008.9 1005.2 996.3 999.6 1012.6 1014.9 1019.8 1031.0 ****** DAY ** ** 23 2 8 2 22 20 24 12 19 27 MIN. QFF PRESSURE IN HPA ****** ****** 999.0 999.0 996.4 990.0 989.2 991.2 995.7 1004.8 1010.0 1004.1 ****** DAY ** ** 31 16 11 16 12 12 7 1 1 11 PRESSURE AT HOUR 0900 UTC. MEAN QFE PRESSURE IN HPA ****** ****** 838.2 838.4 837.7 838.5 836.1 836.9 841.9 844.3 843.4 842.1 ****** MAX. QFE PRESSURE IN HPA ****** ****** 845.2 843.8 841.8 843.6 839.1 840.6 849.2 846.8 846.2 848.8 ****** DAY ** ** 23 2 16 2 20 20 25 12 5 21 MIN. QFE PRESSURE IN HPA ****** ****** 833.4 832.2 831.2 833.1 833.2 834.0 836.1 842.0 840.0 830.7 ****** DAY ** ** 5 16 11 16 12 7 4 2 16 31 MEAN QNH PRESSURE IN HPA ****** ****** 1010.5 1010.7 1009.9 1010.8 1008.0 1009.0 1014.8 1017.5 1016.6 1015.1 ****** MAX. QNH PRESSURE IN HPA ****** ****** 1018.6 1017.0 1014.7 1016.8 1011.5 1013.3 1023.3 1020.5 1019.8 1022.8 ****** DAY ** ** 23 2 16 2 20 20 25 12 5 21 MIN. QNH PRESSURE IN HPA ****** ****** 1004.9 1003.5 1002.3 1004.5 1004.7 1005.6 1008.0 1014.9 1012.6 1001.8 ****** DAY ** ** 5 16 11 16 12 7 4 2 16 31 MEAN QFF PRESSURE IN HPA ****** ****** 1006.0 1002.3 1000.4 996.2 991.4 993.0 1001.8 1007.6 1012.3 1015.7 ****** MAX. QFF PRESSURE IN HPA ****** ****** 1014.3 1010.3 1006.4 1004.7 995.5 998.0 1010.4 1011.3 1016.8 1028.0 ****** DAY ** ** 23 2 8 1 22 20 25 19 19 27 MIN. QFF PRESSURE IN HPA ****** ****** 998.3 995.9 994.9 989.1 987.7 988.4 993.6 1003.1 1007.0 1000.7 ****** DAY ** ** 31 16 11 16 12 7 4 2 1 25 PRESSURE AT HOUR 1200 UTC. MEAN QFE PRESSURE IN HPA ****** ****** 836.3 837.0 836.3 836.6 834.5 835.1 840.3 842.7 842.1 840.9 ****** MAX. QFE PRESSURE IN HPA ****** ****** 842.4 844.2 840.2 842.2 837.4 839.0 847.8 845.3 845.0 847.4 ****** DAY ** ** 23 1 16 2 20 20 24 12 5 21 MIN. QFE PRESSURE IN HPA ****** ****** 832.6 829.8 830.4 831.3 831.7 832.0 833.8 840.5 838.9 830.2 ****** DAY ** ** 5 16 11 16 12 7 9 28 16 31 MEAN QNH PRESSURE IN HPA ****** ****** 1008.3 1009.0 1008.3 1008.7 1006.2 1006.8 1012.9 1015.7 1015.0 1013.6 ****** MAX. QNH PRESSURE IN HPA ****** ****** 1015.4 1017.5 1012.8 1015.1 1009.6 1011.4 1021.6 1018.7 1018.4 1021.2 ****** DAY ** ** 23 1 16 2 20 20 24 12 5 21 MIN. QNH PRESSURE IN HPA ****** ****** 1004.0 1000.7 1001.4 1002.5 1002.9 1003.3 1005.4 1013.2 1011.3 1001.2 ****** DAY ** ** 5 16 11 16 12 7 9 28 16 31 MEAN QFF PRESSURE IN HPA ****** ****** 1003.8 1000.9 998.9 994.3 989.8 991.2 1000.3 1006.1 1010.9 1014.4 ****** MAX. QFF PRESSURE IN HPA ****** ****** 1011.3 1011.6 1003.3 1003.3 993.3 997.2 1008.5 1010.7 1015.2 1026.2 ****** DAY ** ** 23 1 8 1 22 20 24 12 18 27 MIN. QFF PRESSURE IN HPA ****** ****** 998.0 993.9 993.6 988.0 986.1 986.3 991.9 1001.5 1004.3 1000.4 ****** DAY ** ** 31 16 11 16 12 7 4 1 1 25 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ESFAHAN (40800) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 32 37 N LONGITUDE 51 40 E DATA PROCESSING CENTER ELEVATION 1550.4 M MEANS AND EXTREMES FOR THE YEAR 1963 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 1500 UTC. MEAN QFE PRESSURE IN HPA ****** ****** 836.8 837.2 836.4 836.1 834.0 834.6 840.1 842.8 842.5 841.5 ****** MAX. QFE PRESSURE IN HPA ****** ****** 841.8 844.2 840.0 841.8 837.2 838.0 848.0 844.9 845.6 847.7 ****** DAY ** ** 23 1 15 1 20 20 24 12 2 21 MIN. QFE PRESSURE IN HPA ****** ****** 832.6 832.4 831.0 831.2 830.8 831.6 834.2 840.6 839.2 831.2 ****** DAY ** ** 5 16 11 15 12 7 3 1 16 31 MEAN QNH PRESSURE IN HPA ****** ****** 1008.8 1009.3 1008.3 1008.1 1005.6 1006.3 1012.7 1015.8 1015.5 1014.4 ****** MAX. QNH PRESSURE IN HPA ****** ****** 1014.7 1017.5 1012.6 1014.7 1009.3 1010.3 1021.9 1018.3 1019.1 1021.5 ****** DAY ** ** 23 1 15 1 20 20 24 12 2 21 MIN. QNH PRESSURE IN HPA ****** ****** 1004.0 1003.7 1002.1 1002.3 1001.9 1002.8 1005.8 1013.3 1011.6 1002.3 ****** DAY ** ** 5 16 11 15 12 7 3 1 16 31 MEAN QFF PRESSURE IN HPA ****** ****** 1005.4 1002.2 999.7 994.2 989.9 991.6 1001.4 1007.7 1012.8 1016.9 ****** MAX. QFF PRESSURE IN HPA ****** ****** 1012.6 1013.6 1005.3 1003.6 993.7 996.3 1010.5 1011.3 1016.9 1029.3 ****** DAY ** ** 8 1 15 1 21 20 24 11 18 26 MIN. QFF PRESSURE IN HPA ****** ****** 999.5 997.3 994.8 988.2 985.7 986.5 993.3 1003.0 1005.6 1004.9 ****** DAY ** ** 30 29 11 16 12 7 3 1 1 31 PRESSURE AT HOUR 1800 UTC. MEAN QFE PRESSURE IN HPA ****** ****** 838.1 838.5 837.7 837.7 835.3 836.1 841.3 844.0 843.5 842.3 ****** MAX. QFE PRESSURE IN HPA ****** ****** 843.2 843.4 841.0 842.6 838.9 839.1 849.8 846.0 846.6 848.4 ****** DAY ** ** 22 1 7 2 20 22 24 8 5 21 MIN. QFE PRESSURE IN HPA ****** ****** 833.6 834.4 833.0 832.0 832.7 832.9 835.2 841.8 840.1 832.7 ****** DAY ** ** 5 14 11 16 12 11 3 28 25 31 MEAN QNH PRESSURE IN HPA ****** ****** 1010.4 1010.9 1010.0 1009.9 1007.1 1008.0 1014.1 1017.2 1016.6 1015.3 ****** MAX. QNH PRESSURE IN HPA ****** ****** 1016.3 1016.5 1013.7 1015.6 1011.3 1011.5 1024.0 1019.6 1020.3 1022.3 ****** DAY ** ** 22 1 7 2 20 22 24 8 5 21 MIN. QNH PRESSURE IN HPA ****** ****** 1005.1 1006.1 1004.4 1003.3 1004.1 1004.3 1007.0 1014.7 1012.7 1004.1 ****** DAY ** ** 5 14 11 16 12 11 3 28 25 31 MEAN QFF PRESSURE IN HPA ****** ****** 1006.6 1003.1 1000.8 995.7 991.0 992.9 1002.1 1008.3 1013.5 1017.4 ****** MAX. QFF PRESSURE IN HPA ****** ****** 1013.5 1011.3 1007.0 1003.4 995.1 996.7 1011.4 1011.7 1017.8 1029.8 ****** DAY ** ** 8 1 13 1 20 20 24 11 18 26 MIN. QFF PRESSURE IN HPA ****** ****** 999.5 997.3 996.0 988.4 987.6 988.5 994.0 1003.8 1008.3 1005.0 ****** DAY ** ** 30 28 25 16 12 10 3 6 1 10 PRESSURE AT HOUR 2100 UTC. MEAN QFE PRESSURE IN HPA ****** ****** 838.5 838.6 838.1 838.2 835.7 836.7 841.7 844.3 843.7 842.4 ****** MAX. QFE PRESSURE IN HPA ****** ****** 844.0 843.7 841.4 842.6 839.0 840.0 849.7 846.4 847.2 848.4 ****** DAY ** ** 22 7 8 1 20 22 24 11 5 20 MIN. QFE PRESSURE IN HPA ****** ****** 834.4 834.0 832.7 833.0 833.2 833.2 836.0 842.3 840.6 832.1 ****** DAY ** ** 5 14 10 15 12 10 3 6 21 10 MEAN QNH PRESSURE IN HPA ****** ****** 1010.9 1010.9 1010.4 1010.4 1007.6 1008.8 1014.6 1017.6 1016.9 1015.3 ****** MAX. QNH PRESSURE IN HPA ****** ****** 1017.2 1016.9 1014.2 1015.6 1011.4 1012.6 1023.9 1020.0 1021.0 1022.3 ****** DAY ** ** 22 7 8 1 20 22 24 11 5 20 MIN. QNH PRESSURE IN HPA ****** ****** 1006.1 1005.6 1004.1 1004.4 1004.7 1004.7 1007.9 1015.3 1013.3 1003.4 ****** DAY ** ** 5 14 10 15 12 10 3 6 21 10 MEAN QFF PRESSURE IN HPA ****** ****** 1006.3 1002.4 1000.7 995.7 991.0 992.9 1001.7 1007.7 1012.8 1016.1 ****** MAX. QFF PRESSURE IN HPA ****** ****** 1014.0 1010.6 1006.2 1003.7 994.8 998.1 1010.6 1011.3 1017.3 1030.1 ****** DAY ** ** 22 1 13 1 20 22 24 11 23 26 MIN. QFF PRESSURE IN HPA ****** ****** 999.3 996.8 995.9 988.7 987.4 987.7 993.8 1003.2 1008.1 999.7 ****** DAY ** ** 30 28 25 15 12 10 4 6 1 10 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ESFAHAN (40800) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 32 37 N LONGITUDE 51 40 E DATA PROCESSING CENTER ELEVATION 1550.4 M MEANS AND EXTREMES FOR THE YEAR 1964 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AIR TEMPERATURE (C) -3.3 6.2 12.2 15.1 22.2 27.5 30.7 29.1 23.5 14.8 8.9 0.1 15.6 MINIMUN AIR TEMPERATURE (C) -9.1 -0.4 6.3 9.4 14.7 19.5 22.5 20.2 14.7 6.3 2.2 -4.6 8.5 DAYS WITH MINIMUM TEMP. >=21 0 0 0 0 1 8 29 12 0 0 0 0 50 DAYS WITH MINIMUM TEMP. <=-4 29 4 0 0 0 0 0 0 0 0 2 17 52 DAYS WITH FREEZING MIN.<= 0 30 20 3 0 0 0 0 0 0 0 5 29 87 TEMPERATURE RECORDS LOWEST(C) -16.0 -6.0 0.0 4.0 6.0 16.0 20.0 17.0 10.0 2.0 -8.0 -13.0 -16.0 DAY 21 9 1 10 2 2 25 28 28 31 30 19 MAXIMUM AIR TEMPERATURE (C) 3.1 13.3 18.9 21.8 29.7 34.7 38.2 37.1 32.1 23.4 16.7 5.5 22.9 DAYS WITH MAXIMUM TEMP. >=30 0 0 0 0 18 30 31 31 22 3 0 0 135 DAYS WITH MAXIMUM TEMP. <= 0 9 0 0 0 0 0 0 0 0 0 0 5 14 TEMPERATURE RECORDS HIGHEST(C) 13.0 19.0 23.0 28.0 33.0 38.0 40.0 40.0 36.0 31.0 21.0 14.0 40.0 DAY 18 24 19 29 16 26 2 6 5 1 16 6 DIF. BETWEEN (MAX.-MIN.) (C) 12.2 13.7 12.6 12.4 15.0 15.2 15.7 16.9 17.4 17.1 14.5 10.1 14.4 MEAN DAILY TEMP. (MDT) (C) -3.0 6.5 12.6 15.6 22.2 27.1 30.4 28.6 23.4 14.8 9.4 0.4 15.7 COOLING DEG. DAYS(BASE 21 0C) 0.0 0.0 0.0 0.0 59.5 182.0 290.5 237.0 77.0 0.0 0.0 0.0 846.0 HEATING DEG. DAYS(BASE 18 0C) 651.5 334.0 167.5 82.5 5.5 0.0 0.0 0.0 0.0 107.5 256.5 544.5 2149.5 DEWPOINT (MEAN C) -9.8 -4.9 -1.5 -3.9 -1.9 0.1 2.6 1.5 -2.0 -5.3 -3.0 -7.4 -3.0 MIXING RATIO (G/KG) 2.29 3.30 4.29 3.61 4.30 4.81 5.74 5.29 4.11 3.14 3.81 2.79 3.96 VAPOUR PRESSURE (HPA) 3.08 4.43 5.75 4.83 5.76 6.41 7.62 7.04 5.52 4.24 5.14 3.77 5.30 SATURATION DEF. (HPA) 1.99 5.53 9.14 13.08 22.40 31.76 38.42 35.29 25.18 13.87 6.99 2.68 17.19 RELATIVE HUMIDITY (MEAN %) 64 49 43 30 23 19 19 19 20 28 47 62 35 RELATIVE HUMIDITY (MAX. %) 79 71 72 52 41 34 32 33 35 45 73 79 54 RELATIVE HUMIDITY (MIN. %) 42 28 25 15 11 10 10 11 11 16 28 42 21 RELATIVE HUMIDITY (MEAN% 03UTC) 70 65 62 43 33 28 28 29 29 40 63 65 46 RELATIVE HUMIDITY (MEAN% 09UTC) 54 37 35 21 14 13 14 14 17 23 36 58 28 RELATIVE HUMIDITY (MEAN% 15UTC) 62 36 31 25 17 12 13 13 16 21 36 61 29 RH=0 => RELATIVE HUMIDITY < 0.5% AMOUNT OF PRECIPITATION MM. 2.8 3.0 27.5 6.0 0.0 0.0 0.0 0.0 0.0 0.0 1.6 25.0 65.9 DAYS WITH PRECIPITATION >=10 0 0 0 0 0 0 0 0 0 0 0 1 1 DAYS WITH PRECIPITATION >= 5 0 0 4 1 0 0 0 0 0 0 0 3 8 DAYS WITH PRECIPITATION >= 1 2 2 6 1 0 0 0 0 0 0 1 4 16 DAYS WITH PRECIPITATION 4 5 9 4 2 2 0 0 0 0 3 5 34 GREATEST DAILY PRECIPITATION 1.4 2.0 6.0 6.0 0.0 0.0 0.0 0.0 0.0 0.0 1.0 12.0 12.0 DAY 5 13 16 17 ** ** ** ** ** ** 25 17 DAY WITH THUNDER STORM 0 0 2 0 1 1 0 0 0 0 0 0 4 DAYS WITH SNOW OR SLEET 2 1 0 0 0 0 0 0 0 0 0 5 8 DAYS WITH DUST 1 1 4 14 1 0 2 2 0 1 2 3 31 WIND DIRECTION (PREVAILING) 270 270 270 270 270 270 90 270 90 90 270 270 270 PREVAILING WIND SPEED(KNOTS) 5.1 6.8 9.9 13.3 9.5 6.7 7.2 5.3 5.3 5.9 8.6 3.1 8.2 PREVAILING WIND PERCENT 35.5 45.0 42.7 54.2 53.6 34.6 15.0 17.3 20.4 17.4 17.1 17.4 28.7 CALMS PERCENT OF WIND 39.9 25.1 17.7 9.6 14.9 26.7 25.1 26.2 42.5 49.0 47.5 63.2 32.3 NO. OF WIND OBSERVATION 248 231 248 240 248 240 247 248 240 247 240 247 2924 VECTOR WIND DIRECTION (MEAN) 263 263 250 261 271 275 92 98 111 117 247 266 256 VECTOR WIND MAGNITUDE(KNOTS) 2.1 3.6 5.7 8.5 5.5 1.9 1.6 1.4 2.2 1.0 1.6 0.3 1.9 WIND STEADINESES (MEAN %) 60.0 66.7 67.9 78.7 71.4 41.3 26.7 30.4 56.4 31.3 45.7 25.0 36.5 WIND SPEED (MEAN KNOTS) 3.5 5.4 8.4 10.8 7.7 4.6 6.0 4.6 3.9 3.2 3.5 1.2 5.2 FASTEST WIND DIRECTION 330 270 210 270 180 270 180 130 120 270 230 130 230 FASTEST WIND SPEED (KNOTS) 38 38 40 45 35 20 30 18 22 30 55 9 55 DAY 19 6 6 9 1 6 9 5 13 3 27 10 DAYS WITH SKY CLEAR (0-2)/8 25 10 13 13 18 26 29 31 30 31 20 14 260 DAYS WITH P.CLOUDY (3-6)/8 4 15 13 13 10 4 1 0 0 0 8 6 74 DAYS WITH CLOUDY (7-8)/8 2 4 5 4 3 0 1 0 0 0 2 11 32 DAYS WITH VISIBILITY =< 2 KM 2 1 1 5 1 0 0 0 0 0 0 7 17 DURATION OF SUNSHINE HOURS 260.9 227.8 268.6 268.7 336.4 343.4 357.2 336.2 323.3 315.7 261.6 175.0 3474.8 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ESFAHAN (40800) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 32 37 N LONGITUDE 51 40 E DATA PROCESSING CENTER ELEVATION 1550.4 M MEANS AND EXTREMES FOR THE YEAR 1964 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL MEAN QFE PRESSURE IN HPA 842.0 839.4 839.5 837.3 840.3 836.3 834.8 835.0 840.5 844.8 844.1 844.8 839.9 MAX. QFE PRESSURE IN HPA 850.0 846.4 845.8 847.0 844.6 845.1 841.4 841.7 847.8 850.3 851.0 851.6 851.6 DAY-HOUR 30- 6 1- 6 18- 6 24- 6 16-21 3- 6 22- 6 31- 6 29- 6 21- 6 2- 6 2- 6 MIN. QFE PRESSURE IN HPA 824.1 834.4 834.3 827.6 834.7 829.6 829.4 829.7 834.9 836.5 827.7 836.6 824.1 DAY-HOUR 19- 3 10-12 6-12 9-12 12-12 29-15 2-15 2-15 9-15 3-12 27-12 24-12 MEAN QNH PRESSURE IN HPA 1014.9 1011.9 1012.0 1009.5 1012.9 1008.2 1006.5 1006.7 1013.1 1018.1 1017.3 1018.2 1012.4 MAX. QNH PRESSURE IN HPA 1024.2 1020.0 1019.3 1020.7 1017.9 1018.5 1014.2 1014.6 1021.6 1024.6 1025.4 1026.1 1026.1 DAY-HOUR 30- 6 1- 6 18- 6 24- 6 16-21 3- 6 22- 6 31- 6 29- 6 21- 6 2- 6 2- 6 MIN. QNH PRESSURE IN HPA 994.1 1006.1 1005.9 998.1 1006.4 1000.5 1000.2 1000.6 1006.6 1008.5 998.3 1008.6 994.1 DAY-HOUR 19- 3 10-12 6-12 9-12 12-12 29-15 2-15 2-15 9-15 3-12 27-12 24-12 MEAN QFF PRESSURE IN HPA 1020.5 1010.7 1006.8 1002.5 1001.7 993.8 990.1 991.3 1001.1 1011.6 1014.4 1021.4 1005.5 MAX. QFF PRESSURE IN HPA 1030.7 1023.0 1016.3 1016.8 1008.9 1007.2 997.9 1000.2 1011.9 1020.0 1028.5 1031.0 1031.0 DAY-HOUR 21-18 1- 6 17- 3 25- 6 20- 6 11- 0 22- 6 31- 6 29- 3 30- 3 30- 6 1- 6 MIN. QFF PRESSURE IN HPA 992.9 1003.0 999.5 990.5 993.7 984.8 984.0 984.8 992.6 998.1 996.5 1008.6 984.0 DAY-HOUR 19- 3 10-12 6-12 8-12 12-12 28-15 2-15 3-12 9-12 3-12 27-12 25- 0 PRESSURE AT HOUR 0000 UTC. MEAN QFE PRESSURE IN HPA 841.8 839.6 839.2 837.5 840.3 836.7 834.9 835.0 840.6 844.8 844.2 844.9 839.9 MAX. QFE PRESSURE IN HPA 848.3 845.6 844.0 845.4 843.6 844.1 839.0 839.4 845.5 849.2 849.3 850.2 850.2 DAY 31 1 18 24 17 3 22 31 29 21 2 9 MIN. QFE PRESSURE IN HPA 825.9 836.0 835.2 830.5 837.0 831.4 831.6 831.4 837.2 839.0 833.2 838.1 825.9 DAY 19 11 1 9 7 29 3 3 8 5 28 25 MEAN QNH PRESSURE IN HPA 1014.7 1012.1 1011.6 1009.6 1013.0 1008.7 1006.7 1006.8 1013.3 1018.1 1017.4 1018.3 1012.5 MAX. QNH PRESSURE IN HPA 1022.2 1019.1 1017.2 1018.9 1016.8 1017.3 1011.4 1011.9 1019.0 1023.3 1023.4 1024.4 1024.4 DAY 31 1 18 24 17 3 22 31 29 21 2 9 MIN. QNH PRESSURE IN HPA 996.2 1007.9 1007.0 1001.5 1009.1 1002.6 1002.8 1002.6 1009.3 1011.4 1004.7 1010.4 996.2 DAY 19 11 1 9 7 29 3 3 8 5 28 25 MEAN QFF PRESSURE IN HPA 1019.6 1010.3 1006.1 1002.1 1001.7 994.4 990.2 990.9 1001.0 1010.9 1013.6 1021.0 1005.1 MAX. QFF PRESSURE IN HPA 1027.7 1021.4 1012.8 1014.2 1006.2 1007.2 996.6 997.3 1010.5 1018.3 1025.5 1028.4 1028.4 DAY 22 1 18 24 26 11 4 31 19 30 30 1 MIN. QFF PRESSURE IN HPA 993.6 1004.2 1001.1 994.0 997.6 986.7 986.2 986.5 994.6 999.9 1002.7 1008.6 986.2 DAY 19 6 21 9 13 29 9 19 8 4 25 25 PRESSURE AT HOUR 0300 UTC. MEAN QFE PRESSURE IN HPA 842.0 840.0 840.1 838.1 841.1 837.4 835.7 835.9 841.4 845.5 844.7 845.0 840.6 MAX. QFE PRESSURE IN HPA 848.1 845.6 844.4 846.3 844.0 844.8 840.0 840.4 846.7 849.8 850.2 850.6 850.6 DAY 31 1 18 24 17 3 22 31 29 21 2 2 MIN. QFE PRESSURE IN HPA 824.1 836.2 835.5 830.6 837.5 832.6 832.4 832.2 837.2 839.7 834.2 838.6 824.1 DAY 19 13 1 9 12 29 3 3 9 5 27 17 MEAN QNH PRESSURE IN HPA 1014.9 1012.5 1012.7 1010.3 1013.8 1009.6 1007.6 1007.8 1014.2 1019.0 1018.1 1018.4 1013.2 MAX. QNH PRESSURE IN HPA 1022.0 1019.1 1017.7 1019.9 1017.2 1018.2 1012.6 1013.0 1020.4 1024.0 1024.4 1024.9 1024.9 DAY 31 1 18 24 17 3 22 31 29 21 2 2 MIN. QNH PRESSURE IN HPA 994.1 1008.2 1007.3 1001.6 1009.7 1004.0 1003.7 1003.5 1009.3 1012.2 1005.8 1010.9 994.1 DAY 19 13 1 9 12 29 3 3 9 5 27 17 MEAN QFF PRESSURE IN HPA 1021.3 1012.2 1008.4 1004.0 1003.1 995.6 991.7 993.1 1003.1 1013.7 1016.1 1022.6 1007.1 MAX. QFF PRESSURE IN HPA 1028.8 1022.3 1016.3 1016.4 1006.3 1006.6 996.9 999.8 1011.9 1020.0 1025.7 1030.4 1030.4 DAY 22 1 17 24 4 3 23 31 29 30 30 1 MIN. QFF PRESSURE IN HPA 992.9 1006.4 1002.9 995.3 997.9 988.1 987.5 988.4 995.8 1002.8 1004.6 1010.7 987.5 DAY 19 24 21 9 12 28 3 3 9 4 25 25 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ESFAHAN (40800) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 32 37 N LONGITUDE 51 40 E DATA PROCESSING CENTER ELEVATION 1550.4 M MEANS AND EXTREMES FOR THE YEAR 1964 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 0600 UTC. MEAN QFE PRESSURE IN HPA 843.4 841.1 841.2 838.6 841.7 837.9 836.3 836.7 842.4 846.6 845.8 846.2 841.5 MAX. QFE PRESSURE IN HPA 850.0 846.4 845.8 847.0 844.6 845.1 841.4 841.7 847.8 850.3 851.0 851.6 851.6 DAY 30 1 18 24 17 3 22 31 29 21 2 2 MIN. QFE PRESSURE IN HPA 825.9 837.6 835.4 830.8 836.8 832.7 832.7 833.1 837.8 840.9 833.2 839.4 825.9 DAY 19 13 1 9 1 28 8 3 9 3 27 17 MEAN QNH PRESSURE IN HPA 1016.5 1013.9 1014.0 1011.0 1014.6 1010.1 1008.3 1008.7 1015.3 1020.2 1019.3 1019.8 1014.3 MAX. QNH PRESSURE IN HPA 1024.2 1020.0 1019.3 1020.7 1017.9 1018.5 1014.2 1014.6 1021.6 1024.6 1025.4 1026.1 1026.1 DAY 30 1 18 24 17 3 22 31 29 21 2 2 MIN. QNH PRESSURE IN HPA 996.2 1009.8 1007.2 1001.9 1008.9 1004.1 1004.1 1004.5 1010.0 1013.6 1004.7 1011.9 996.2 DAY 19 13 1 9 1 28 8 3 9 3 27 17 MEAN QFF PRESSURE IN HPA 1022.7 1013.3 1009.2 1004.2 1003.4 995.9 991.9 993.5 1003.2 1013.7 1017.1 1023.5 1007.6 MAX. QFF PRESSURE IN HPA 1030.5 1023.0 1015.6 1016.8 1008.9 1005.3 997.9 1000.2 1011.4 1019.6 1028.5 1031.0 1031.0 DAY 21 1 18 25 20 3 22 31 29 30 30 1 MIN. QFF PRESSURE IN HPA 996.3 1006.2 1003.6 994.0 997.9 988.1 987.2 988.7 995.9 1002.2 1003.8 1013.1 987.2 DAY 19 24 12 8 12 28 2 3 9 3 27 25 PRESSURE AT HOUR 0900 UTC. MEAN QFE PRESSURE IN HPA 842.0 839.7 839.8 837.2 840.4 836.7 835.2 835.4 840.9 844.9 844.1 844.9 840.1 MAX. QFE PRESSURE IN HPA 849.4 844.4 844.4 846.2 843.8 843.8 839.9 840.8 846.3 848.7 849.5 850.1 850.1 DAY 30 1 18 24 10 2 22 31 29 21 30 1 MIN. QFE PRESSURE IN HPA 825.4 836.1 834.5 829.1 835.9 831.4 831.5 832.0 837.0 839.0 830.5 837.5 825.4 DAY 19 6 1 9 1 28 2 3 9 3 27 24 MEAN QNH PRESSURE IN HPA 1014.9 1012.2 1012.3 1009.4 1013.1 1008.7 1007.0 1007.2 1013.6 1018.3 1017.4 1018.3 1012.7 MAX. QNH PRESSURE IN HPA 1023.5 1017.7 1017.7 1019.8 1017.0 1017.0 1012.5 1013.5 1019.9 1022.7 1023.6 1024.3 1024.3 DAY 30 1 18 24 10 2 22 31 29 21 30 1 MIN. QNH PRESSURE IN HPA 995.6 1008.0 1006.2 999.9 1007.8 1002.6 1002.7 1003.3 1009.1 1011.4 1001.5 1009.7 995.6 DAY 19 6 1 9 1 28 2 3 9 3 27 24 MEAN QFF PRESSURE IN HPA 1019.9 1010.3 1006.6 1001.9 1001.5 993.8 990.3 991.2 1000.9 1011.0 1013.5 1020.9 1005.1 MAX. QFF PRESSURE IN HPA 1028.6 1018.0 1013.1 1015.2 1006.0 1003.2 996.1 998.6 1009.6 1016.2 1026.9 1027.5 1028.6 DAY 30 1 18 24 26 2 3 31 22 30 30 1 MIN. QFF PRESSURE IN HPA 996.9 1003.7 1001.7 992.1 995.3 986.4 985.7 986.8 994.5 1000.8 999.1 1009.5 985.7 DAY 19 24 20 8 12 28 2 3 9 6 27 25 PRESSURE AT HOUR 1200 UTC. MEAN QFE PRESSURE IN HPA 840.8 837.9 838.0 835.7 838.9 834.9 833.6 833.5 839.1 843.4 842.7 843.7 838.5 MAX. QFE PRESSURE IN HPA 848.0 842.7 842.2 844.2 842.6 842.2 838.0 838.8 844.2 847.6 848.2 848.8 848.8 DAY 30 1 23 24 10 3 22 31 29 20 30 2 MIN. QFE PRESSURE IN HPA 829.8 834.4 834.3 827.6 834.7 830.2 829.8 829.9 835.0 836.5 827.7 836.6 827.6 DAY 18 10 6 9 12 29 2 3 9 3 27 24 MEAN QNH PRESSURE IN HPA 1013.5 1010.1 1010.3 1007.6 1011.3 1006.7 1005.1 1005.1 1011.5 1016.5 1015.7 1016.9 1010.9 MAX. QNH PRESSURE IN HPA 1021.9 1015.7 1015.1 1017.5 1015.6 1015.1 1010.3 1011.2 1017.5 1021.4 1022.1 1022.8 1022.8 DAY 30 1 23 24 10 3 22 31 29 20 30 2 MIN. QNH PRESSURE IN HPA 1000.7 1006.1 1005.9 998.1 1006.4 1001.2 1000.7 1000.8 1006.8 1008.5 998.3 1008.6 998.1 DAY 18 10 6 9 12 29 2 3 9 3 27 24 MEAN QFF PRESSURE IN HPA 1018.3 1008.2 1004.6 1000.1 1000.0 992.4 988.8 989.2 999.2 1009.4 1011.9 1019.5 1003.5 MAX. QFF PRESSURE IN HPA 1027.1 1016.0 1010.2 1012.8 1003.5 1003.6 995.3 996.9 1008.6 1015.0 1025.7 1025.9 1027.1 DAY 21 1 23 24 10 10 3 31 18 31 30 2 MIN. QFF PRESSURE IN HPA 1001.0 1003.0 999.5 990.5 993.7 985.3 984.3 984.8 992.6 998.1 996.5 1009.1 984.3 DAY 18 10 6 8 12 28 2 3 9 3 27 24 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ESFAHAN (40800) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 32 37 N LONGITUDE 51 40 E DATA PROCESSING CENTER ELEVATION 1550.4 M MEANS AND EXTREMES FOR THE YEAR 1964 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 1500 UTC. MEAN QFE PRESSURE IN HPA 841.4 838.3 838.4 836.2 838.8 834.5 833.0 833.1 838.9 843.5 843.2 844.2 838.6 MAX. QFE PRESSURE IN HPA 848.3 842.2 842.0 844.2 842.1 842.0 837.2 838.7 844.4 847.9 848.8 849.1 849.1 DAY 30 1 17 23 17 2 22 31 29 20 30 1 MIN. QFE PRESSURE IN HPA 829.6 834.6 835.4 828.9 835.3 829.6 829.4 829.7 834.9 837.4 829.4 837.1 828.9 DAY 18 10 1 9 12 29 2 2 9 4 27 24 MEAN QNH PRESSURE IN HPA 1014.2 1010.6 1010.7 1008.2 1011.2 1006.1 1004.5 1004.6 1011.3 1016.6 1016.3 1017.4 1011.0 MAX. QNH PRESSURE IN HPA 1022.2 1015.1 1014.9 1017.5 1015.0 1014.9 1009.3 1011.1 1017.7 1021.8 1022.8 1023.2 1023.2 DAY 30 1 17 23 17 2 22 31 29 20 30 1 MIN. QNH PRESSURE IN HPA 1000.5 1006.3 1007.2 999.7 1007.1 1000.5 1000.2 1000.6 1006.6 1009.6 1000.2 1009.2 999.7 DAY 18 10 1 9 12 29 2 2 9 4 27 24 MEAN QFF PRESSURE IN HPA 1020.5 1010.2 1006.2 1001.8 1000.4 992.0 988.5 989.8 1000.1 1011.4 1014.4 1021.5 1004.7 MAX. QFF PRESSURE IN HPA 1029.4 1016.8 1011.8 1013.5 1003.7 1003.2 993.9 998.2 1008.9 1018.0 1025.8 1028.7 1029.4 DAY 21 1 14 23 9 2 22 31 29 31 30 1 MIN. QFF PRESSURE IN HPA 1002.2 1005.8 1001.1 992.3 995.5 984.8 984.0 985.5 993.3 1000.3 1000.0 1010.3 984.0 DAY 18 10 19 8 12 28 2 2 9 4 27 24 PRESSURE AT HOUR 1800 UTC. MEAN QFE PRESSURE IN HPA 842.3 839.4 839.5 837.7 840.5 835.8 834.4 834.9 840.2 844.8 844.0 844.8 839.9 MAX. QFE PRESSURE IN HPA 849.2 843.5 843.6 844.8 843.5 843.6 838.6 840.1 845.2 848.4 849.6 850.0 850.0 DAY 30 27 17 24 16 2 13 31 29 20 1 1 MIN. QFE PRESSURE IN HPA 828.2 835.0 836.2 830.3 837.0 830.8 830.4 831.2 836.2 838.4 831.0 837.8 828.2 DAY 18 10 3 8 1 28 2 2 7 2 27 24 MEAN QNH PRESSURE IN HPA 1015.3 1011.8 1012.0 1009.9 1013.1 1007.6 1006.1 1006.7 1012.9 1018.2 1017.2 1018.1 1012.4 MAX. QNH PRESSURE IN HPA 1023.3 1016.6 1016.8 1018.2 1016.6 1016.8 1010.9 1012.7 1018.6 1022.3 1023.7 1024.2 1024.2 DAY 30 27 17 24 16 2 13 31 29 20 1 1 MIN. QNH PRESSURE IN HPA 998.8 1006.8 1008.2 1001.3 1009.1 1001.9 1001.4 1002.3 1008.2 1010.7 1002.1 1010.0 998.8 DAY 18 10 3 8 1 28 2 2 7 2 27 24 MEAN QFF PRESSURE IN HPA 1021.4 1011.2 1007.1 1003.1 1002.0 993.4 989.7 991.5 1000.9 1011.7 1015.1 1021.7 1005.7 MAX. QFF PRESSURE IN HPA 1030.7 1016.7 1013.0 1014.7 1006.1 1003.6 995.1 998.8 1008.6 1018.9 1028.1 1028.7 1030.7 DAY 21 16 17 25 20 2 22 31 29 31 30 1 MIN. QFF PRESSURE IN HPA 999.1 1004.6 1001.9 993.0 997.1 986.2 984.7 986.5 994.4 999.6 1000.3 1010.6 984.7 DAY 18 3 12 8 12 28 2 3 8 3 27 24 PRESSURE AT HOUR 2100 UTC. MEAN QFE PRESSURE IN HPA 842.3 839.5 839.6 837.8 840.8 836.3 835.0 835.3 840.6 844.9 844.2 844.9 840.1 MAX. QFE PRESSURE IN HPA 849.2 844.3 844.0 845.2 844.6 844.1 839.1 840.2 845.4 849.2 849.9 850.2 850.2 DAY 30 27 17 23 16 3 13 31 28 20 30 9 MIN. QFE PRESSURE IN HPA 826.0 835.2 835.3 830.7 837.5 831.3 831.4 830.8 836.5 839.0 831.4 837.8 826.0 DAY 18 10 3 8 1 29 2 2 8 2 27 24 MEAN QNH PRESSURE IN HPA 1015.3 1012.0 1012.2 1010.1 1013.5 1008.3 1006.7 1007.1 1013.3 1018.3 1017.5 1018.3 1012.7 MAX. QNH PRESSURE IN HPA 1023.3 1017.6 1017.2 1018.6 1017.9 1017.3 1011.5 1012.8 1018.9 1023.3 1024.1 1024.4 1024.4 DAY 30 27 17 23 16 3 13 31 28 20 30 9 MIN. QNH PRESSURE IN HPA 996.3 1007.0 1007.1 1001.8 1009.7 1002.5 1002.6 1001.9 1008.5 1011.4 1002.6 1010.0 996.3 DAY 18 10 3 8 1 29 2 2 8 2 27 24 MEAN QFF PRESSURE IN HPA 1020.3 1010.0 1006.4 1002.5 1001.8 993.3 990.0 991.1 1000.7 1011.1 1014.0 1020.9 1005.2 MAX. QFF PRESSURE IN HPA 1028.2 1017.8 1013.6 1013.5 1008.6 1003.3 996.0 998.5 1009.2 1017.3 1027.7 1026.8 1028.2 DAY 30 27 17 24 25 3 3 31 22 29 30 9 MIN. QFF PRESSURE IN HPA 994.4 1004.0 1000.1 993.6 997.7 986.9 985.7 985.5 993.7 1000.2 999.8 1009.4 985.5 DAY 18 10 31 8 12 28 2 2 8 2 27 24 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ESFAHAN (40800) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 32 37 N LONGITUDE 51 40 E DATA PROCESSING CENTER ELEVATION 1550.4 M MEANS AND EXTREMES FOR THE YEAR 1965 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AIR TEMPERATURE (C) 1.1 6.1 10.7 14.2 22.6 26.8 29.0 27.0 23.0 17.5 11.3 4.3 16.1 MINIMUN AIR TEMPERATURE (C) -2.7 0.4 4.2 7.8 14.7 18.7 21.1 18.7 14.6 10.8 5.2 -1.9 9.3 DAYS WITH MINIMUM TEMP. >=21 0 0 0 0 0 3 23 5 1 0 0 0 32 DAYS WITH MINIMUM TEMP. <=-4 12 2 1 0 0 0 0 0 0 0 0 3 18 DAYS WITH FREEZING MIN.<= 0 27 16 4 1 0 0 0 0 0 0 4 29 81 TEMPERATURE RECORDS LOWEST(C) -7.0 -4.0 -4.0 0.0 8.0 16.0 17.0 16.0 11.0 5.0 0.0 -9.0 -9.0 DAY 5 3 17 6 5 7 18 11 25 28 13 23 MAXIMUM AIR TEMPERATURE (C) 6.0 12.7 17.5 20.8 30.0 34.0 36.5 34.4 30.8 24.5 18.3 12.1 23.1 DAYS WITH MAXIMUM TEMP. >=30 0 0 0 0 22 30 31 31 22 0 0 0 136 DAYS WITH MAXIMUM TEMP. <= 0 2 0 0 0 0 0 0 0 0 0 0 0 2 TEMPERATURE RECORDS HIGHEST(C) 12.0 19.0 23.0 29.0 34.0 37.0 39.0 38.0 35.0 28.0 24.0 17.0 39.0 DAY 27 28 10 29 16 21 14 1 1 7 8 1 DIF. BETWEEN (MAX.-MIN.) (C) 8.7 12.3 13.3 13.0 15.3 15.3 15.4 15.7 16.2 13.7 13.1 14.0 13.8 MEAN DAILY TEMP. (MDT) (C) 1.7 6.6 10.9 14.3 22.4 26.3 28.8 26.5 22.7 17.6 11.7 5.1 16.2 COOLING DEG. DAYS(BASE 21 0C) 0.0 0.0 0.0 2.5 65.0 160.0 241.5 171.0 61.0 0.0 0.0 0.0 701.0 HEATING DEG. DAYS(BASE 18 0C) 506.0 320.0 221.0 120.0 7.5 0.0 0.0 0.0 0.0 38.5 188.5 401.0 1802.5 DEWPOINT (MEAN C) -4.1 -5.4 -4.1 -4.8 -2.1 0.6 1.7 1.7 1.2 1.5 -1.0 -5.5 -1.7 MIXING RATIO (G/KG) 3.54 3.22 3.52 3.34 4.13 5.08 5.45 5.26 5.13 5.26 4.40 3.15 4.29 VAPOUR PRESSURE (HPA) 4.74 4.32 4.72 4.48 5.54 6.78 7.26 7.04 6.89 7.07 5.93 4.25 5.75 SATURATION DEF. (HPA) 2.08 5.62 8.89 12.70 23.38 29.84 34.38 29.94 22.51 13.90 8.13 4.55 16.33 RELATIVE HUMIDITY (MEAN %) 71 48 38 30 22 20 19 21 26 39 46 53 36 RELATIVE HUMIDITY (MAX. %) 85 68 59 50 37 33 31 34 41 60 68 75 53 RELATIVE HUMIDITY (MIN. %) 52 30 21 16 11 12 12 12 15 21 26 31 22 RELATIVE HUMIDITY (MEAN% 03UTC) 74 62 56 43 32 30 28 33 39 56 63 68 49 RELATIVE HUMIDITY (MEAN% 09UTC) 66 39 28 20 15 14 14 14 18 27 32 41 27 RELATIVE HUMIDITY (MEAN% 15UTC) 69 39 29 22 15 15 14 16 21 31 38 46 30 RH=0 => RELATIVE HUMIDITY < 0.5% AMOUNT OF PRECIPITATION MM. 30.0 9.0 1.1 2.0 0.2 0.0 0.0 0.0 0.0 1.0 5.0 8.0 56.3 DAYS WITH PRECIPITATION >=10 0 0 0 0 0 0 0 0 0 0 0 0 0 DAYS WITH PRECIPITATION >= 5 3 1 0 0 0 0 0 0 0 0 0 0 4 DAYS WITH PRECIPITATION >= 1 10 1 1 1 0 0 0 0 0 1 2 4 20 DAYS WITH PRECIPITATION 13 3 6 4 3 1 0 1 1 5 4 6 47 GREATEST DAILY PRECIPITATION 7.0 9.0 1.0 2.0 0.2 0.0 0.0 0.0 0.0 1.0 3.0 4.0 9.0 DAY 30 2 23 19 3 ** ** ** ** 29 9 8 DAY WITH THUNDER STORM 0 0 0 2 1 0 0 0 0 0 0 0 3 DAYS WITH SNOW OR SLEET 8 2 0 0 0 0 0 0 0 0 0 5 15 DAYS WITH DUST 0 1 2 2 2 2 0 2 1 3 0 0 15 WIND DIRECTION (PREVAILING) 270 270 270 270 270 270 270 135 90 270 270 270 270 PREVAILING WIND SPEED(KNOTS) 4.7 10.4 11.4 12.1 9.0 9.1 9.1 10.7 6.7 9.6 6.9 7.7 9.2 PREVAILING WIND PERCENT 16.9 40.6 38.3 40.0 35.9 33.3 23.0 12.5 17.9 27.0 27.5 20.2 26.5 CALMS PERCENT OF WIND 54.0 40.2 26.2 17.9 26.6 28.3 22.2 41.1 36.7 29.0 38.3 50.4 34.2 NO. OF WIND OBSERVATION 248 224 248 240 248 240 248 248 240 248 240 248 2920 VECTOR WIND DIRECTION (MEAN) 237 259 254 258 261 284 87 101 94 255 259 257 257 VECTOR WIND MAGNITUDE(KNOTS) 0.9 5.2 6.0 6.7 3.8 3.1 1.3 1.9 0.5 4.4 2.0 1.6 2.5 WIND STEADINESES (MEAN %) 37.5 86.7 67.4 69.1 52.8 55.4 17.8 40.4 11.4 62.0 50.0 48.5 42.4 WIND SPEED (MEAN KNOTS) 2.4 6.0 8.9 9.7 7.2 5.6 7.3 4.7 4.4 7.1 4.0 3.3 5.9 FASTEST WIND DIRECTION 270 250 270 260 190 270 270 50 180 240 270 180 270 FASTEST WIND SPEED (KNOTS) 20 50 55 45 45 32 32 25 30 55 28 35 55 DAY 11 23 2 2 2 10 12 7 30 25 9 28 DAYS WITH SKY CLEAR (0-2)/8 7 21 16 14 21 27 30 28 25 12 14 18 233 DAYS WITH P.CLOUDY (3-6)/8 12 4 11 12 5 3 1 3 5 15 13 11 95 DAYS WITH CLOUDY (7-8)/8 12 3 4 4 5 0 0 0 0 4 3 2 37 DAYS WITH VISIBILITY =< 2 KM 8 2 0 0 0 0 0 0 1 0 0 2 13 DURATION OF SUNSHINE HOURS 149.6 225.1 264.6 277.1 272.7 346.3 350.4 339.2 294.0 228.6 232.6 241.2 3221.4 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ESFAHAN (40800) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 32 37 N LONGITUDE 51 40 E DATA PROCESSING CENTER ELEVATION 1550.4 M MEANS AND EXTREMES FOR THE YEAR 1965 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL MEAN QFE PRESSURE IN HPA 839.2 839.6 840.9 838.3 840.8 837.8 835.6 840.1 841.9 843.4 844.8 843.2 840.5 MAX. QFE PRESSURE IN HPA 846.4 845.8 847.0 845.7 848.0 844.3 841.4 845.5 848.0 849.1 850.0 849.2 850.0 DAY-HOUR 16-18 1- 6 16- 6 25- 6 21- 6 3- 6 16- 6 20- 6 15- 6 5- 6 28- 6 4- 6 MIN. QFE PRESSURE IN HPA 825.4 830.6 832.2 829.8 835.4 830.9 829.6 833.3 836.8 832.6 840.6 833.0 825.4 DAY-HOUR 10-21 9- 9 23-12 3-15 29-15 24-15 11-15 1-15 3-15 25- 9 9-12 20-12 MEAN QNH PRESSURE IN HPA 1011.6 1012.1 1013.6 1010.6 1013.5 1010.0 1007.5 1012.7 1014.8 1016.5 1018.2 1016.3 1013.1 MAX. QNH PRESSURE IN HPA 1020.0 1019.3 1020.7 1019.2 1021.9 1017.6 1014.2 1019.0 1021.9 1023.2 1024.2 1023.3 1024.2 DAY-HOUR 16-18 1- 6 16- 6 25- 6 21- 6 3- 6 16- 6 20- 6 15- 6 5- 6 28- 6 4- 6 MIN. QNH PRESSURE IN HPA 995.6 1001.6 1003.5 1000.7 1007.2 1002.0 1000.5 1004.8 1008.9 1004.0 1013.3 1004.4 995.6 DAY-HOUR 10-21 9- 9 23-12 3-15 29-15 24-15 11-15 1-15 3-15 25- 9 9-12 20-12 MEAN QFF PRESSURE IN HPA 1013.8 1011.0 1009.5 1004.3 1002.0 996.0 992.1 998.6 1003.0 1008.0 1013.7 1016.5 1005.7 MAX. QFF PRESSURE IN HPA 1025.9 1021.0 1022.1 1015.1 1012.0 1004.5 1000.4 1005.6 1011.5 1018.8 1021.7 1027.0 1027.0 DAY-HOUR 17- 3 3- 6 16- 6 10- 6 5- 0 3- 6 17- 6 20- 3 30- 3 28-18 25- 6 23- 6 MIN. QFF PRESSURE IN HPA 996.3 997.3 998.0 995.0 994.5 987.2 985.0 988.8 996.2 993.3 1006.7 1005.5 985.0 DAY-HOUR 10-21 9- 9 23- 9 3-12 29-12 24-12 11-12 1-12 3-12 25- 9 8-21 20-12 PRESSURE AT HOUR 0000 UTC. MEAN QFE PRESSURE IN HPA 838.9 839.5 840.8 838.4 841.1 838.2 835.9 840.1 842.0 843.4 844.7 843.1 840.5 MAX. QFE PRESSURE IN HPA 846.4 845.2 845.1 843.5 846.9 842.5 840.3 843.6 846.4 848.0 847.6 847.2 848.0 DAY 17 26 17 25 21 2 16 10 15 5 28 4 MIN. QFE PRESSURE IN HPA 825.4 831.8 834.3 831.6 837.9 832.6 831.0 834.3 838.9 834.2 842.0 836.5 825.4 DAY 11 23 23 4 3 24 11 1 4 25 10 20 MEAN QNH PRESSURE IN HPA 1011.3 1012.0 1013.6 1010.7 1013.8 1010.4 1007.8 1012.7 1014.9 1016.5 1018.1 1016.2 1013.2 MAX. QNH PRESSURE IN HPA 1020.0 1018.6 1018.5 1016.6 1020.6 1015.5 1012.9 1016.8 1020.0 1021.9 1021.4 1021.0 1021.9 DAY 17 26 17 25 21 2 16 10 15 5 28 4 MIN. QNH PRESSURE IN HPA 995.6 1003.0 1005.9 1002.8 1010.1 1004.0 1002.1 1005.9 1011.3 1005.8 1014.9 1008.5 995.6 DAY 11 23 23 4 3 24 11 1 4 25 10 20 MEAN QFF PRESSURE IN HPA 1013.0 1010.4 1009.0 1004.1 1002.2 996.3 992.2 998.3 1002.8 1007.6 1013.0 1015.5 1005.4 MAX. QFF PRESSURE IN HPA 1024.6 1018.8 1018.9 1011.5 1012.0 1002.1 999.3 1003.0 1009.1 1015.5 1018.4 1024.0 1024.6 DAY 17 3 17 10 5 3 17 20 30 29 25 23 MIN. QFF PRESSURE IN HPA 996.4 1000.3 999.9 996.1 996.8 988.8 986.0 989.9 997.7 994.8 1007.2 1009.6 986.0 DAY 11 23 23 4 30 24 11 1 1 25 9 20 PRESSURE AT HOUR 0300 UTC. MEAN QFE PRESSURE IN HPA 839.2 839.9 841.5 839.1 841.6 839.0 836.8 841.0 842.7 843.9 845.3 843.5 841.1 MAX. QFE PRESSURE IN HPA 846.4 845.0 845.7 844.5 847.4 843.7 840.9 844.7 847.1 848.2 848.6 848.4 848.6 DAY 17 26 17 25 21 4 16 20 15 5 28 4 MIN. QFE PRESSURE IN HPA 826.0 830.7 834.2 832.0 837.8 833.3 831.3 835.3 839.6 833.8 841.7 835.5 826.0 DAY 11 23 23 4 12 24 11 1 4 25 9 20 MEAN QNH PRESSURE IN HPA 1011.6 1012.4 1014.3 1011.5 1014.4 1011.4 1008.8 1013.7 1015.8 1017.1 1018.7 1016.6 1013.9 MAX. QNH PRESSURE IN HPA 1020.0 1018.4 1019.2 1017.8 1021.2 1016.9 1013.6 1018.0 1020.8 1022.1 1022.6 1022.3 1022.6 DAY 17 26 17 25 21 4 16 20 15 5 28 4 MIN. QNH PRESSURE IN HPA 996.3 1001.8 1005.8 1003.3 1010.0 1004.8 1002.5 1007.1 1012.1 1005.4 1014.6 1007.3 996.3 DAY 11 23 23 4 12 24 11 1 4 25 9 20 MEAN QFF PRESSURE IN HPA 1014.4 1012.1 1011.2 1006.0 1003.7 997.8 993.9 1000.5 1005.2 1009.8 1015.3 1017.8 1007.3 MAX. QFF PRESSURE IN HPA 1025.9 1020.0 1021.3 1013.8 1009.6 1003.6 999.7 1005.6 1011.5 1017.1 1021.2 1025.7 1025.9 DAY 17 26 17 6 5 3 17 20 30 29 25 23 MIN. QFF PRESSURE IN HPA 998.1 998.2 1000.7 998.2 998.2 989.9 986.7 991.7 999.9 995.8 1007.1 1009.4 986.7 DAY 11 23 23 4 12 24 11 1 1 25 9 20 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ESFAHAN (40800) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 32 37 N LONGITUDE 51 40 E DATA PROCESSING CENTER ELEVATION 1550.4 M MEANS AND EXTREMES FOR THE YEAR 1965 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 0600 UTC. MEAN QFE PRESSURE IN HPA 840.3 841.1 842.5 840.0 842.1 839.3 837.2 841.6 843.5 844.9 846.4 844.7 842.0 MAX. QFE PRESSURE IN HPA 846.3 845.8 847.0 845.7 848.0 844.3 841.4 845.5 848.0 849.1 850.0 849.2 850.0 DAY 31 1 16 25 21 3 16 20 15 5 28 4 MIN. QFE PRESSURE IN HPA 828.0 831.6 834.3 832.5 837.8 833.3 831.3 836.1 840.6 834.2 843.4 836.2 828.0 DAY 11 23 23 4 2 24 11 1 4 25 9 20 MEAN QNH PRESSURE IN HPA 1013.0 1013.8 1015.4 1012.5 1015.1 1011.8 1009.4 1014.4 1016.7 1018.2 1020.0 1018.0 1014.9 MAX. QNH PRESSURE IN HPA 1019.9 1019.3 1020.7 1019.2 1021.9 1017.6 1014.2 1019.0 1021.9 1023.2 1024.2 1023.3 1024.2 DAY 31 1 16 25 21 3 16 20 15 5 28 4 MIN. QNH PRESSURE IN HPA 998.6 1002.8 1005.9 1003.8 1010.0 1004.8 1002.5 1008.0 1013.3 1005.8 1016.5 1008.2 998.6 DAY 11 23 23 4 2 24 11 1 4 25 9 20 MEAN QFF PRESSURE IN HPA 1015.7 1013.3 1011.7 1006.1 1003.7 997.9 994.2 1000.4 1004.8 1009.8 1015.8 1019.0 1007.7 MAX. QFF PRESSURE IN HPA 1025.0 1021.0 1022.1 1015.1 1010.1 1004.5 1000.4 1005.2 1010.7 1016.3 1021.7 1027.0 1027.0 DAY 16 3 16 10 21 3 17 9 30 29 25 23 MIN. QFF PRESSURE IN HPA 999.2 999.5 999.7 998.1 998.7 988.9 986.6 992.5 999.4 995.5 1010.0 1010.1 986.6 DAY 11 23 23 4 29 24 11 1 1 25 9 20 PRESSURE AT HOUR 0900 UTC. MEAN QFE PRESSURE IN HPA 839.3 839.9 841.1 838.6 840.9 838.2 836.0 840.4 842.1 843.2 844.8 843.3 840.6 MAX. QFE PRESSURE IN HPA 845.4 844.8 846.4 844.0 846.0 843.0 840.8 843.8 846.5 847.3 849.1 847.2 849.1 DAY 31 1 16 25 21 3 16 20 15 4 28 5 MIN. QFE PRESSURE IN HPA 828.3 830.6 832.6 832.4 837.2 832.6 830.4 835.2 839.5 832.6 841.9 834.0 828.3 DAY 11 9 23 4 12 24 11 1 4 25 9 20 MEAN QNH PRESSURE IN HPA 1011.8 1012.4 1013.9 1010.9 1013.6 1010.4 1007.9 1013.1 1015.1 1016.3 1018.2 1016.4 1013.3 MAX. QNH PRESSURE IN HPA 1018.9 1018.2 1020.0 1017.2 1019.6 1016.1 1013.5 1017.0 1020.1 1021.1 1023.2 1021.0 1023.2 DAY 31 1 16 25 21 3 16 20 15 4 28 5 MIN. QNH PRESSURE IN HPA 999.0 1001.6 1004.0 1003.7 1009.3 1004.0 1001.4 1007.0 1012.0 1004.0 1014.8 1005.6 999.0 DAY 11 9 23 4 12 24 11 1 4 25 9 20 MEAN QFF PRESSURE IN HPA 1013.5 1010.8 1009.0 1004.1 1001.7 996.0 992.0 998.3 1002.4 1006.9 1012.9 1015.9 1005.3 MAX. QFF PRESSURE IN HPA 1022.1 1018.9 1020.6 1012.7 1008.7 1002.0 999.0 1003.1 1007.9 1015.4 1018.3 1024.3 1024.3 DAY 16 1 16 10 4 2 16 9 30 30 28 22 MIN. QFF PRESSURE IN HPA 998.8 997.3 998.0 998.3 996.7 988.3 985.6 990.6 997.4 993.3 1007.2 1006.3 985.6 DAY 11 9 23 21 12 24 11 1 1 25 8 20 PRESSURE AT HOUR 1200 UTC. MEAN QFE PRESSURE IN HPA 838.2 838.3 839.5 836.9 839.3 836.5 834.4 838.8 840.4 842.0 843.5 842.1 839.2 MAX. QFE PRESSURE IN HPA 844.2 843.3 844.2 842.0 844.2 841.5 839.2 842.0 844.4 845.7 846.9 846.5 846.9 DAY 16 1 16 25 20 2 16 9 14 28 28 22 MIN. QFE PRESSURE IN HPA 828.8 831.2 832.2 830.1 835.5 831.2 829.7 833.5 837.3 833.4 840.6 833.0 828.8 DAY 11 9 23 3 3 24 11 1 3 25 9 20 MEAN QNH PRESSURE IN HPA 1010.5 1010.6 1012.0 1008.9 1011.7 1008.5 1006.0 1011.2 1013.0 1014.9 1016.7 1015.0 1011.6 MAX. QNH PRESSURE IN HPA 1017.5 1016.4 1017.5 1014.9 1017.5 1014.3 1011.6 1014.9 1017.7 1019.2 1020.6 1020.1 1020.6 DAY 16 1 16 25 20 2 16 9 14 28 28 22 MIN. QNH PRESSURE IN HPA 999.5 1002.3 1003.5 1001.1 1007.3 1002.3 1000.6 1005.0 1009.4 1004.9 1013.3 1004.4 999.5 DAY 11 9 23 3 3 24 11 1 3 25 9 20 MEAN QFF PRESSURE IN HPA 1012.1 1008.8 1007.4 1002.3 1000.2 994.3 990.4 996.8 1000.9 1006.1 1011.7 1014.2 1003.8 MAX. QFF PRESSURE IN HPA 1021.0 1017.4 1018.2 1010.7 1006.3 1001.1 997.8 1001.2 1007.0 1014.5 1016.5 1024.2 1024.2 DAY 16 2 16 10 4 2 16 20 28 30 25 22 MIN. QFF PRESSURE IN HPA 1000.3 998.5 998.2 995.0 994.5 987.2 985.0 988.8 996.2 995.1 1007.2 1005.5 985.0 DAY 11 9 23 3 29 24 11 1 3 25 6 20 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ESFAHAN (40800) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 32 37 N LONGITUDE 51 40 E DATA PROCESSING CENTER ELEVATION 1550.4 M MEANS AND EXTREMES FOR THE YEAR 1965 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 1500 UTC. MEAN QFE PRESSURE IN HPA 838.8 838.9 839.9 837.0 839.3 836.0 833.9 838.5 840.3 842.4 844.1 842.6 839.3 MAX. QFE PRESSURE IN HPA 845.2 843.8 844.7 841.6 844.4 840.9 839.0 842.1 844.0 847.0 847.1 846.8 847.1 DAY 16 1 1 25 20 2 15 20 14 28 28 31 MIN. QFE PRESSURE IN HPA 829.5 833.0 832.8 829.8 835.4 830.9 829.6 833.3 836.8 834.4 841.4 834.6 829.5 DAY 10 22 23 3 29 24 11 1 3 25 11 20 MEAN QNH PRESSURE IN HPA 1011.2 1011.3 1012.4 1009.1 1011.7 1007.9 1005.4 1010.8 1012.9 1015.3 1017.4 1015.7 1011.8 MAX. QNH PRESSURE IN HPA 1018.6 1017.0 1018.0 1014.4 1017.7 1013.6 1011.4 1015.0 1017.2 1020.7 1020.8 1020.5 1020.8 DAY 16 1 1 25 20 2 15 20 14 28 28 31 MIN. QNH PRESSURE IN HPA 1000.4 1004.4 1004.2 1000.7 1007.2 1002.0 1000.5 1004.8 1008.9 1006.1 1014.2 1006.3 1000.4 DAY 10 22 23 3 29 24 11 1 3 25 11 20 MEAN QFF PRESSURE IN HPA 1013.8 1010.8 1009.2 1003.5 1000.8 994.2 990.5 997.5 1002.2 1008.0 1014.0 1016.8 1005.1 MAX. QFF PRESSURE IN HPA 1024.4 1018.1 1019.3 1010.3 1007.5 1000.5 998.0 1002.7 1007.9 1017.5 1018.9 1025.5 1025.5 DAY 16 2 16 10 4 2 16 20 29 28 25 22 MIN. QFF PRESSURE IN HPA 1002.7 1004.0 1000.8 995.9 994.7 987.3 985.5 989.2 996.7 997.6 1008.6 1008.9 985.5 DAY 9 22 23 19 29 23 11 1 3 25 8 20 PRESSURE AT HOUR 1800 UTC. MEAN QFE PRESSURE IN HPA 839.5 839.8 841.0 838.4 840.9 837.5 835.3 840.2 841.8 843.6 844.8 843.3 840.5 MAX. QFE PRESSURE IN HPA 846.4 845.0 846.1 843.4 846.3 842.0 840.5 843.6 846.6 848.8 847.6 848.5 848.8 DAY 16 25 10 25 20 2 16 20 14 28 28 31 MIN. QFE PRESSURE IN HPA 828.5 833.0 834.6 830.1 837.0 831.7 831.0 835.5 839.1 835.5 841.5 836.0 828.5 DAY 10 22 23 3 29 23 10 1 1 25 9 20 MEAN QNH PRESSURE IN HPA 1011.9 1012.4 1013.7 1010.7 1013.6 1009.6 1007.1 1012.8 1014.7 1016.8 1018.2 1016.5 1013.2 MAX. QNH PRESSURE IN HPA 1020.0 1018.4 1019.7 1016.5 1019.9 1014.9 1013.2 1016.8 1020.3 1022.8 1021.4 1022.5 1022.8 DAY 16 25 10 25 20 2 16 20 14 28 28 31 MIN. QNH PRESSURE IN HPA 999.2 1004.4 1006.3 1001.1 1009.1 1002.9 1002.1 1007.3 1011.5 1007.3 1014.3 1007.9 999.2 DAY 10 22 23 3 29 23 10 1 1 25 9 20 MEAN QFF PRESSURE IN HPA 1014.6 1011.7 1009.9 1004.2 1002.1 995.7 991.9 998.8 1003.0 1008.4 1014.1 1017.3 1006.0 MAX. QFF PRESSURE IN HPA 1025.6 1019.5 1020.2 1011.3 1009.3 1001.9 999.7 1003.5 1008.6 1018.8 1019.3 1025.2 1025.6 DAY 16 2 16 10 4 2 16 9 29 28 24 22 MIN. QFF PRESSURE IN HPA 1001.1 1003.4 1001.4 995.1 996.4 987.6 986.6 991.9 997.1 998.6 1008.7 1010.6 986.6 DAY 10 22 22 3 29 23 10 1 1 25 8 20 PRESSURE AT HOUR 2100 UTC. MEAN QFE PRESSURE IN HPA 839.3 839.8 841.0 838.6 841.1 838.0 835.8 840.5 842.2 843.6 844.8 843.4 840.7 MAX. QFE PRESSURE IN HPA 846.4 845.5 845.5 843.2 846.6 842.5 840.2 843.8 846.5 849.0 847.6 848.4 849.0 DAY 16 25 10 24 20 2 15 9 14 4 28 31 MIN. QFE PRESSURE IN HPA 825.4 833.2 835.0 831.2 837.8 832.0 831.0 836.1 839.0 835.4 841.2 837.8 825.4 DAY 10 22 22 3 30 23 10 1 3 24 9 19 MEAN QNH PRESSURE IN HPA 1011.7 1012.3 1013.7 1011.0 1013.8 1010.2 1007.6 1013.1 1015.2 1016.8 1018.2 1016.5 1013.3 MAX. QNH PRESSURE IN HPA 1020.0 1019.0 1019.0 1016.3 1020.3 1015.5 1012.8 1017.0 1020.1 1023.0 1021.4 1022.3 1023.0 DAY 16 25 10 24 20 2 15 9 14 4 28 31 MIN. QNH PRESSURE IN HPA 995.6 1004.7 1006.8 1002.3 1010.0 1003.3 1002.1 1008.0 1011.4 1007.2 1014.0 1010.0 995.6 DAY 10 22 22 3 30 23 10 1 3 24 9 19 MEAN QFF PRESSURE IN HPA 1013.5 1010.6 1008.8 1004.1 1001.8 995.7 991.9 998.4 1002.6 1007.5 1013.0 1016.1 1005.3 MAX. QFF PRESSURE IN HPA 1024.2 1019.4 1019.2 1011.3 1010.1 1002.0 998.5 1003.5 1007.4 1015.6 1018.0 1024.1 1024.2 DAY 16 2 16 10 4 2 16 9 29 28 24 22 MIN. QFF PRESSURE IN HPA 996.3 1002.5 1000.8 995.5 996.6 987.6 985.8 991.3 997.2 995.9 1006.7 1008.7 985.8 DAY 10 22 22 3 30 23 10 1 3 24 8 17 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ESFAHAN (40800) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 32 37 N LONGITUDE 51 40 E DATA PROCESSING CENTER ELEVATION 1550.4 M MEANS AND EXTREMES FOR THE YEAR 1966 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AIR TEMPERATURE (C) 7.2 7.3 10.5 15.0 21.5 27.8 28.8 28.3 23.7 16.1 9.3 5.4 16.7 MINIMUN AIR TEMPERATURE (C) 1.2 1.9 4.5 8.6 14.0 19.1 20.5 19.9 15.6 9.8 2.0 -0.5 9.7 DAYS WITH MINIMUM TEMP. >=21 0 0 0 0 0 6 16 12 0 0 0 0 34 DAYS WITH MINIMUM TEMP. <=-4 1 0 0 0 0 0 0 0 0 0 4 2 7 DAYS WITH FREEZING MIN.<= 0 16 8 5 0 0 0 0 0 0 0 8 21 58 TEMPERATURE RECORDS LOWEST(C) -4.0 -2.0 -1.0 3.0 7.0 16.0 16.0 16.0 10.0 6.0 -5.0 -5.0 -5.0 DAY 17 7 3 1 8 9 15 16 5 30 27 29 MAXIMUM AIR TEMPERATURE (C) 14.3 13.4 16.9 21.8 28.6 35.3 36.3 35.8 31.3 22.7 17.5 12.6 23.9 DAYS WITH MAXIMUM TEMP. >=30 0 0 0 0 9 30 31 31 25 0 0 0 126 DAYS WITH MAXIMUM TEMP. <= 0 0 0 0 0 0 0 0 0 0 0 0 0 0 TEMPERATURE RECORDS HIGHEST(C) 19.0 19.0 23.0 28.0 34.0 38.0 40.0 38.0 36.0 29.0 21.0 17.0 40.0 DAY 28 1 10 16 25 21 24 5 1 1 1 2 DIF. BETWEEN (MAX.-MIN.) (C) 13.1 11.5 12.4 13.2 14.6 16.2 15.8 15.9 15.7 12.9 15.5 13.1 14.2 MEAN DAILY TEMP. (MDT) (C) 7.8 7.7 10.7 15.2 21.3 27.2 28.4 27.8 23.4 16.3 9.8 6.1 16.8 COOLING DEG. DAYS(BASE 21 0C) 0.0 0.0 0.0 1.0 34.5 185.5 228.5 212.0 74.5 0.0 0.0 0.0 736.0 HEATING DEG. DAYS(BASE 18 0C) 317.0 289.5 226.0 92.5 4.0 0.0 0.0 0.0 0.0 66.0 247.5 370.0 1612.5 DEWPOINT (MEAN C) -2.9 -3.3 -4.6 -0.8 1.5 2.1 1.8 -0.3 -1.1 3.1 -6.0 -6.5 -1.4 MIXING RATIO (G/KG) 3.77 3.67 3.41 4.50 5.32 5.43 5.39 4.61 4.41 5.83 3.02 2.96 4.36 VAPOUR PRESSURE (HPA) 5.08 4.92 4.57 6.03 7.13 7.24 7.18 6.15 5.92 7.84 4.10 3.98 5.85 SATURATION DEF. (HPA) 5.57 5.71 8.89 11.87 19.66 31.70 33.82 33.85 24.64 11.21 8.32 5.40 16.72 RELATIVE HUMIDITY (MEAN %) 52 50 39 38 30 21 19 17 22 46 37 47 35 RELATIVE HUMIDITY (MAX. %) 72 72 63 61 49 34 32 28 36 69 60 67 54 RELATIVE HUMIDITY (MIN. %) 32 30 20 20 16 12 11 9 11 26 19 28 20 RELATIVE HUMIDITY (MEAN% 03UTC) 67 67 58 54 43 29 31 27 32 66 56 61 49 RELATIVE HUMIDITY (MEAN% 09UTC) 40 40 27 25 21 16 13 12 15 35 25 36 25 RELATIVE HUMIDITY (MEAN% 15UTC) 44 41 25 29 22 16 15 13 17 39 26 40 27 RH=0 => RELATIVE HUMIDITY < 0.5% AMOUNT OF PRECIPITATION MM. 13.0 22.0 18.3 4.1 0.4 0.0 0.0 0.0 0.0 27.1 0.0 8.0 92.9 DAYS WITH PRECIPITATION >=10 0 0 1 0 0 0 0 0 0 1 0 0 2 DAYS WITH PRECIPITATION >= 5 1 2 1 0 0 0 0 0 0 3 0 1 8 DAYS WITH PRECIPITATION >= 1 5 7 4 1 0 0 0 0 0 4 0 3 24 DAYS WITH PRECIPITATION 6 7 6 8 3 0 1 2 1 10 0 5 49 GREATEST DAILY PRECIPITATION 5.0 7.0 10.0 4.0 0.4 0.0 0.0 0.0 0.0 11.0 0.0 6.0 11.0 DAY 21 9 2 3 6 ** ** ** ** 14 ** 20 DAY WITH THUNDER STORM 0 0 0 0 0 1 1 0 1 2 0 0 5 DAYS WITH SNOW OR SLEET 0 1 1 0 0 0 0 0 0 0 0 1 3 DAYS WITH DUST 0 0 3 1 2 2 6 3 2 1 0 1 21 WIND DIRECTION (PREVAILING) 270 270 270 270 270 270 90 90 270 270 270 270 270 PREVAILING WIND SPEED(KNOTS) 7.5 7.9 11.9 12.4 11.1 7.1 8.2 9.2 7.8 6.1 4.4 7.6 9.0 PREVAILING WIND PERCENT 19.4 33.9 46.0 35.4 25.0 23.0 15.3 22.2 28.5 15.3 9.2 23.8 23.3 CALMS PERCENT OF WIND 46.2 36.6 18.5 26.7 33.1 31.4 29.4 31.9 34.3 48.0 62.9 44.4 36.9 NO. OF WIND OBSERVATION 247 224 248 240 248 239 248 248 239 248 240 248 2917 VECTOR WIND DIRECTION (MEAN) 239 255 261 267 264 242 70 96 265 247 144 239 256 VECTOR WIND MAGNITUDE(KNOTS) 1.7 3.1 6.9 4.9 4.5 0.5 1.3 2.4 1.7 0.5 0.4 1.7 1.8 WIND STEADINESES (MEAN %) 45.9 60.8 73.4 61.2 60.0 8.6 24.1 43.6 37.0 14.7 21.1 43.6 33.3 WIND SPEED (MEAN KNOTS) 3.7 5.1 9.4 8.0 7.5 5.8 5.4 5.5 4.6 3.4 1.9 3.9 5.4 FASTEST WIND DIRECTION 270 180 220 270 230 150 130 130 250 240 90 240 220 FASTEST WIND SPEED (KNOTS) 32 30 50 40 50 35 25 25 35 25 16 25 50 DAY 27 2 19 10 5 4 4 8 30 11 6 2 DAYS WITH SKY CLEAR (0-2)/8 13 12 17 10 12 24 29 24 27 21 23 19 231 DAYS WITH P.CLOUDY (3-6)/8 15 8 10 10 15 6 2 7 2 8 7 7 97 DAYS WITH CLOUDY (7-8)/8 3 8 4 10 4 0 0 0 1 2 0 5 37 DAYS WITH VISIBILITY =< 2 KM 0 1 1 1 0 1 3 2 0 2 0 1 12 DURATION OF SUNSHINE HOURS 231.5 186.8 262.7 258.3 301.1 352.3 347.1 345.6 302.3 278.2 280.1 215.5 3361.5 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ESFAHAN (40800) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 32 37 N LONGITUDE 51 40 E DATA PROCESSING CENTER ELEVATION 1550.4 M MEANS AND EXTREMES FOR THE YEAR 1966 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL MEAN QFE PRESSURE IN HPA 843.7 840.1 839.5 839.8 841.3 837.4 835.7 837.1 841.1 843.8 848.2 842.3 840.8 MAX. QFE PRESSURE IN HPA 851.0 847.9 848.0 847.5 845.5 845.8 842.3 842.9 845.9 849.8 854.2 852.0 854.2 DAY-HOUR 1- 6 12- 6 3- 6 26- 6 11- 6 7- 6 11- 6 17- 6 22- 6 18- 6 23- 6 7- 6 MIN. QFE PRESSURE IN HPA 837.4 832.7 825.5 834.0 835.5 830.4 829.7 830.7 834.4 838.0 841.9 833.1 825.5 DAY-HOUR 13- 9 14-12 19-15 22-12 31-15 27-15 17-12 5-15 13-12 1-15 30-12 18-12 MEAN QNH PRESSURE IN HPA 1016.9 1012.7 1012.0 1012.4 1014.0 1009.5 1007.6 1009.2 1013.8 1016.9 1022.1 1015.3 1013.5 MAX. QNH PRESSURE IN HPA 1025.4 1021.8 1021.9 1021.3 1019.0 1019.3 1015.3 1015.9 1019.4 1024.0 1029.1 1026.5 1029.1 DAY-HOUR 1- 6 12- 6 3- 6 26- 6 11- 6 7- 6 11- 6 17- 6 22- 6 18- 6 23- 6 7- 6 MIN. QNH PRESSURE IN HPA 1009.6 1004.1 995.7 1005.6 1007.3 1001.4 1000.6 1001.8 1006.1 1010.3 1014.8 1004.5 995.7 DAY-HOUR 13- 9 14-12 19-15 22-12 31-15 27-15 17-12 5-15 13-12 1-15 30-12 18-12 MEAN QFF PRESSURE IN HPA 1015.2 1010.7 1007.9 1005.4 1003.1 994.9 992.4 994.3 1001.7 1009.3 1019.2 1014.7 1005.7 MAX. QFF PRESSURE IN HPA 1025.6 1021.0 1022.5 1016.5 1010.9 1005.8 1000.4 1002.9 1008.5 1018.5 1028.2 1027.4 1028.2 DAY-HOUR 1- 6 12- 6 3- 6 26- 3 10- 6 7- 6 15- 3 17- 6 22- 6 18- 6 28- 6 7- 6 MIN. QFF PRESSURE IN HPA 1005.3 999.5 989.6 996.8 994.9 985.7 984.5 986.0 993.3 1000.1 1011.4 1001.8 984.5 DAY-HOUR 30-12 2- 9 19-12 22-12 31-12 26-12 24-15 5-12 12-12 1-12 16-12 18-12 PRESSURE AT HOUR 0000 UTC. MEAN QFE PRESSURE IN HPA 843.7 840.1 839.5 839.7 841.5 837.6 836.0 837.2 841.2 843.7 848.3 842.3 840.9 MAX. QFE PRESSURE IN HPA 849.4 845.6 846.5 845.9 844.2 844.8 840.0 841.5 844.5 847.5 852.5 850.0 852.5 DAY 1 12 3 26 10 7 11 17 16 23 23 8 MIN. QFE PRESSURE IN HPA 837.7 835.6 829.5 835.2 837.8 832.0 831.3 833.0 836.6 839.0 845.2 835.2 829.5 DAY 13 15 20 14 31 27 17 25 13 15 30 20 MEAN QNH PRESSURE IN HPA 1016.9 1012.7 1012.0 1012.3 1014.3 1009.8 1007.9 1009.3 1014.0 1016.9 1022.2 1015.2 1013.6 MAX. QNH PRESSURE IN HPA 1023.5 1019.1 1020.1 1019.4 1017.5 1018.2 1012.6 1014.3 1017.8 1021.3 1027.1 1024.2 1027.1 DAY 1 12 3 26 10 7 11 17 16 23 23 8 MIN. QNH PRESSURE IN HPA 1009.9 1007.5 1000.4 1007.0 1010.0 1003.3 1002.5 1004.4 1008.6 1011.4 1018.6 1007.0 1000.4 DAY 13 15 20 14 31 27 17 25 13 15 30 20 MEAN QFF PRESSURE IN HPA 1014.4 1010.1 1007.4 1005.1 1003.3 995.0 992.4 994.1 1001.4 1008.8 1018.5 1013.7 1005.4 MAX. QFF PRESSURE IN HPA 1022.3 1017.4 1020.4 1014.5 1008.8 1004.4 998.0 1000.7 1005.8 1014.5 1024.4 1022.2 1024.4 DAY 1 12 3 6 10 7 15 17 22 31 24 8 MIN. QFF PRESSURE IN HPA 1006.0 1003.4 994.0 998.5 998.1 987.3 986.7 988.3 995.2 1001.6 1013.6 1002.5 986.7 DAY 31 2 20 17 31 27 17 6 13 2 17 20 PRESSURE AT HOUR 0300 UTC. MEAN QFE PRESSURE IN HPA 844.0 840.4 840.0 840.4 842.0 838.4 836.9 838.1 841.9 844.3 848.8 842.6 841.5 MAX. QFE PRESSURE IN HPA 850.1 846.9 847.3 846.9 844.4 845.2 841.4 842.3 844.8 848.3 853.4 850.4 853.4 DAY 1 26 3 27 11 7 11 17 22 18 23 7 MIN. QFE PRESSURE IN HPA 838.3 836.0 830.6 836.1 838.4 833.0 832.6 834.0 836.6 839.8 845.1 835.0 830.6 DAY 13 21 20 14 31 27 17 5 13 15 30 20 MEAN QNH PRESSURE IN HPA 1017.2 1013.1 1012.5 1013.1 1014.9 1010.7 1009.0 1010.4 1014.7 1017.6 1022.8 1015.6 1014.3 MAX. QNH PRESSURE IN HPA 1024.3 1020.6 1021.1 1020.6 1017.7 1018.6 1014.2 1015.3 1018.2 1022.2 1028.2 1024.7 1028.2 DAY 1 26 3 27 11 7 11 17 22 18 23 7 MIN. QNH PRESSURE IN HPA 1010.6 1007.9 1001.6 1008.0 1010.7 1004.4 1004.0 1005.6 1008.6 1012.3 1018.5 1006.8 1001.6 DAY 13 21 20 14 31 27 17 5 13 15 30 20 MEAN QFF PRESSURE IN HPA 1016.4 1011.8 1009.2 1007.1 1004.7 996.5 994.3 996.3 1003.5 1010.9 1021.4 1016.0 1007.3 MAX. QFF PRESSURE IN HPA 1024.8 1019.7 1022.0 1016.5 1010.2 1004.8 1000.4 1002.9 1008.2 1018.0 1028.1 1025.8 1028.1 DAY 1 12 3 26 11 7 15 17 22 31 27 7 MIN. QFF PRESSURE IN HPA 1008.2 1001.9 997.0 999.8 999.4 989.1 987.8 990.6 996.8 1004.7 1016.7 1003.7 987.8 DAY 27 2 20 18 31 26 24 6 13 2 5 20 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ESFAHAN (40800) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 32 37 N LONGITUDE 51 40 E DATA PROCESSING CENTER ELEVATION 1550.4 M MEANS AND EXTREMES FOR THE YEAR 1966 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 0600 UTC. MEAN QFE PRESSURE IN HPA 845.2 841.6 841.0 841.2 842.6 838.9 837.3 838.8 842.8 845.4 849.9 843.9 842.4 MAX. QFE PRESSURE IN HPA 851.0 847.9 848.0 847.5 845.5 845.8 842.3 842.9 845.9 849.8 854.2 852.0 854.2 DAY 1 12 3 26 11 7 11 17 22 18 23 7 MIN. QFE PRESSURE IN HPA 838.4 834.7 831.4 837.0 838.7 833.2 832.1 834.4 838.6 840.8 845.4 835.5 831.4 DAY 13 2 20 14 31 27 17 5 13 26 30 20 MEAN QNH PRESSURE IN HPA 1018.7 1014.4 1013.8 1013.9 1015.7 1011.3 1009.4 1011.2 1015.8 1018.8 1024.1 1017.1 1015.3 MAX. QNH PRESSURE IN HPA 1025.4 1021.8 1021.9 1021.3 1019.0 1019.3 1015.3 1015.9 1019.4 1024.0 1029.1 1026.5 1029.1 DAY 1 12 3 26 11 7 11 17 22 18 23 7 MIN. QNH PRESSURE IN HPA 1010.7 1006.4 1002.6 1009.1 1011.1 1004.7 1003.4 1006.1 1010.9 1013.5 1018.9 1007.3 1002.6 DAY 13 2 20 14 31 27 17 5 13 26 30 20 MEAN QFF PRESSURE IN HPA 1017.6 1012.8 1010.0 1007.2 1004.7 996.6 994.4 996.5 1003.6 1011.3 1021.4 1017.1 1007.8 MAX. QFF PRESSURE IN HPA 1025.6 1021.0 1022.5 1016.4 1010.9 1005.8 999.6 1002.9 1008.5 1018.5 1028.2 1027.4 1028.2 DAY 1 12 3 26 10 7 15 17 22 18 28 7 MIN. QFF PRESSURE IN HPA 1008.6 1000.9 998.1 1000.2 998.8 988.5 988.1 990.8 998.2 1004.0 1015.9 1005.3 988.1 DAY 13 2 20 18 31 27 24 5 13 2 16 20 PRESSURE AT HOUR 0900 UTC. MEAN QFE PRESSURE IN HPA 844.0 840.4 839.9 839.8 841.3 837.6 836.1 837.5 841.4 843.9 848.2 842.3 841.0 MAX. QFE PRESSURE IN HPA 850.4 846.7 847.4 845.8 844.4 844.2 841.2 841.4 844.0 848.0 852.1 850.4 852.1 DAY 1 12 3 26 11 7 11 17 16 31 23 7 MIN. QFE PRESSURE IN HPA 837.4 833.0 830.6 835.7 837.4 832.3 831.2 832.9 836.8 839.5 843.3 833.6 830.6 DAY 13 2 20 22 31 27 17 5 13 15 30 18 MEAN QNH PRESSURE IN HPA 1017.2 1013.0 1012.5 1012.4 1014.1 1009.8 1008.0 1009.6 1014.2 1017.1 1022.1 1015.3 1013.8 MAX. QNH PRESSURE IN HPA 1024.7 1020.4 1021.2 1019.3 1017.7 1017.5 1014.0 1014.2 1017.2 1021.9 1026.7 1024.7 1026.7 DAY 1 12 3 26 11 7 11 17 16 31 23 7 MIN. QNH PRESSURE IN HPA 1009.6 1004.4 1001.6 1007.6 1009.6 1003.6 1002.3 1004.3 1008.9 1012.0 1016.4 1005.1 1001.6 DAY 13 2 20 22 31 27 17 5 13 15 30 18 MEAN QFF PRESSURE IN HPA 1014.9 1010.7 1008.0 1004.9 1002.8 995.0 992.3 994.1 1001.4 1008.9 1018.4 1014.0 1005.4 MAX. QFF PRESSURE IN HPA 1024.0 1018.2 1020.8 1015.4 1009.7 1003.4 997.3 999.7 1005.8 1015.2 1024.3 1023.7 1024.3 DAY 1 12 3 5 10 7 14 17 22 18 28 8 MIN. QFF PRESSURE IN HPA 1005.9 999.5 995.6 998.3 996.9 987.2 986.3 988.2 995.5 1002.1 1013.4 1001.8 986.3 DAY 27 2 19 22 31 27 24 5 13 2 16 18 PRESSURE AT HOUR 1200 UTC. MEAN QFE PRESSURE IN HPA 842.5 838.8 838.1 838.3 839.9 836.1 834.4 835.7 839.5 842.4 847.0 841.1 839.5 MAX. QFE PRESSURE IN HPA 847.5 844.8 845.4 844.3 843.0 843.4 839.4 840.0 842.5 846.5 851.0 849.0 851.0 DAY 1 26 3 26 12 6 11 17 30 31 23 7 MIN. QFE PRESSURE IN HPA 837.4 832.7 827.1 834.0 835.6 830.7 829.7 831.0 834.4 838.2 841.9 833.1 827.1 DAY 13 14 19 22 31 27 17 5 13 14 30 18 MEAN QNH PRESSURE IN HPA 1015.4 1011.2 1010.3 1010.6 1012.5 1008.0 1006.1 1007.6 1012.0 1015.3 1020.7 1013.9 1012.0 MAX. QNH PRESSURE IN HPA 1021.3 1018.2 1018.9 1017.6 1016.1 1016.5 1011.9 1012.6 1015.5 1020.1 1025.4 1023.0 1025.4 DAY 1 26 3 26 12 6 11 17 30 31 23 7 MIN. QNH PRESSURE IN HPA 1009.6 1004.1 997.6 1005.6 1007.5 1001.8 1000.6 1002.1 1006.1 1010.5 1014.8 1004.5 997.6 DAY 13 14 19 22 31 27 17 5 13 14 30 18 MEAN QFF PRESSURE IN HPA 1012.9 1008.6 1005.8 1003.4 1001.4 993.1 990.6 992.3 999.6 1007.2 1017.0 1012.4 1003.7 MAX. QFF PRESSURE IN HPA 1020.8 1015.5 1017.2 1013.6 1007.6 1002.1 996.4 998.9 1004.1 1013.6 1023.0 1021.3 1023.0 DAY 1 12 3 5 10 7 15 17 30 31 23 7 MIN. QFF PRESSURE IN HPA 1005.3 1002.1 989.6 996.8 994.9 985.7 984.9 986.0 993.3 1000.1 1011.4 1001.8 984.9 DAY 30 14 19 22 31 26 17 5 12 1 16 18 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ESFAHAN (40800) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 32 37 N LONGITUDE 51 40 E DATA PROCESSING CENTER ELEVATION 1550.4 M MEANS AND EXTREMES FOR THE YEAR 1966 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 1500 UTC. MEAN QFE PRESSURE IN HPA 843.0 839.2 838.3 838.8 840.0 835.7 833.9 835.4 839.6 842.6 847.2 841.6 839.6 MAX. QFE PRESSURE IN HPA 848.1 844.8 845.4 844.5 842.6 842.5 838.5 839.5 842.5 846.8 851.5 849.2 851.5 DAY 1 12 3 26 10 6 11 17 30 31 23 7 MIN. QFE PRESSURE IN HPA 838.4 833.0 825.5 835.0 835.5 830.4 829.8 830.7 834.4 838.0 842.4 835.3 825.5 DAY 13 14 19 23 31 27 17 5 13 1 30 18 MEAN QNH PRESSURE IN HPA 1016.1 1011.6 1010.6 1011.2 1012.5 1007.6 1005.5 1007.2 1012.1 1015.6 1020.9 1014.5 1012.1 MAX. QNH PRESSURE IN HPA 1022.0 1018.2 1018.9 1017.8 1015.6 1015.5 1010.8 1012.0 1015.5 1020.5 1026.0 1023.3 1026.0 DAY 1 12 3 26 10 6 11 17 30 31 23 7 MIN. QNH PRESSURE IN HPA 1010.7 1004.4 995.7 1006.8 1007.3 1001.4 1000.7 1001.8 1006.1 1010.3 1015.4 1007.1 995.7 DAY 13 14 19 23 31 27 17 5 13 1 30 18 MEAN QFF PRESSURE IN HPA 1015.2 1010.3 1007.2 1005.1 1002.2 993.3 990.8 993.1 1000.9 1008.9 1019.5 1014.9 1005.1 MAX. QFF PRESSURE IN HPA 1023.2 1017.7 1018.5 1013.8 1007.9 1001.9 996.5 999.3 1005.1 1015.9 1026.4 1023.9 1026.4 DAY 1 12 3 5 10 4 14 17 30 31 27 7 MIN. QFF PRESSURE IN HPA 1008.0 1003.3 990.0 1000.2 995.7 985.9 984.5 987.2 994.7 1001.8 1014.5 1005.3 984.5 DAY 27 14 19 23 31 26 24 5 13 1 16 12 PRESSURE AT HOUR 1800 UTC. MEAN QFE PRESSURE IN HPA 843.8 840.1 839.5 840.1 841.4 837.2 835.5 836.8 841.2 843.9 848.0 842.4 840.8 MAX. QFE PRESSURE IN HPA 849.0 845.4 845.7 846.2 843.8 844.4 840.0 841.2 844.2 847.6 852.2 850.4 852.2 DAY 1 12 3 26 10 6 11 17 15 31 23 7 MIN. QFE PRESSURE IN HPA 838.7 835.3 826.2 835.7 837.1 831.7 831.5 832.4 837.3 839.0 843.0 836.4 826.2 DAY 12 14 19 13 31 26 17 5 12 14 30 20 MEAN QNH PRESSURE IN HPA 1016.9 1012.7 1012.0 1012.7 1014.2 1009.3 1007.4 1008.9 1013.9 1017.1 1021.9 1015.4 1013.5 MAX. QNH PRESSURE IN HPA 1023.0 1018.9 1019.2 1019.8 1017.0 1017.7 1012.6 1014.0 1017.5 1021.4 1026.8 1024.7 1026.8 DAY 1 12 3 26 10 6 11 17 15 31 23 7 MIN. QNH PRESSURE IN HPA 1011.1 1007.1 996.5 1007.6 1009.2 1002.9 1002.7 1003.7 1009.4 1011.4 1016.1 1008.4 996.5 DAY 12 14 19 13 31 26 17 5 12 14 30 20 MEAN QFF PRESSURE IN HPA 1015.8 1011.1 1008.1 1005.8 1003.2 994.6 992.3 994.2 1001.9 1009.6 1019.3 1015.3 1005.9 MAX. QFF PRESSURE IN HPA 1023.8 1017.6 1020.3 1013.8 1008.9 1004.0 997.5 1000.8 1005.8 1016.0 1026.1 1025.1 1026.1 DAY 1 12 2 26 10 6 14 17 15 31 27 7 MIN. QFF PRESSURE IN HPA 1008.4 1004.0 989.6 1000.1 996.5 986.5 986.0 988.7 995.8 1003.3 1013.3 1006.4 986.0 DAY 30 28 19 13 31 26 24 4 12 1 16 20 PRESSURE AT HOUR 2100 UTC. MEAN QFE PRESSURE IN HPA 843.6 840.1 840.0 840.2 841.5 837.7 835.9 837.3 841.3 844.0 848.2 842.4 841.0 MAX. QFE PRESSURE IN HPA 848.6 845.2 846.6 846.4 844.2 844.4 840.3 841.4 844.7 847.7 852.5 850.4 852.5 DAY 1 25 2 26 9 6 11 16 29 31 22 7 MIN. QFE PRESSURE IN HPA 838.4 835.6 829.4 835.5 837.1 832.0 831.8 832.6 837.3 839.0 842.8 836.0 829.4 DAY 12 14 19 13 31 26 16 24 12 14 30 19 MEAN QNH PRESSURE IN HPA 1016.8 1012.7 1012.5 1012.8 1014.3 1009.9 1007.7 1009.4 1014.0 1017.2 1022.1 1015.4 1013.7 MAX. QNH PRESSURE IN HPA 1022.6 1018.6 1020.3 1020.0 1017.5 1017.7 1012.9 1014.2 1018.0 1021.5 1027.1 1024.7 1027.1 DAY 1 25 2 26 9 6 11 16 29 31 22 7 MIN. QNH PRESSURE IN HPA 1010.7 1007.5 1000.2 1007.3 1009.2 1003.3 1003.0 1004.0 1009.4 1011.4 1015.8 1007.9 1000.2 DAY 12 14 19 13 31 26 16 24 12 14 30 19 MEAN QFF PRESSURE IN HPA 1014.3 1010.4 1008.1 1005.2 1003.0 995.1 992.0 993.9 1001.2 1008.9 1018.4 1014.2 1005.4 MAX. QFF PRESSURE IN HPA 1021.8 1016.2 1020.7 1014.2 1009.3 1003.7 998.4 1000.0 1005.7 1015.0 1024.8 1022.9 1024.8 DAY 1 25 2 5 20 6 14 16 21 31 23 7 MIN. QFF PRESSURE IN HPA 1006.7 1001.1 993.6 998.3 996.2 986.7 986.1 987.5 995.1 1002.2 1012.9 1004.6 986.1 DAY 30 28 19 13 31 26 24 24 12 1 30 19 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ESFAHAN (40800) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 32 37 N LONGITUDE 51 40 E DATA PROCESSING CENTER ELEVATION 1550.4 M MEANS AND EXTREMES FOR THE YEAR 1967 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AIR TEMPERATURE (C) 3.0 3.9 8.6 13.3 20.4 25.2 30.3 27.6 24.1 16.6 10.1 3.6 15.6 MINIMUN AIR TEMPERATURE (C) -2.9 -1.4 1.7 6.7 12.9 17.0 21.9 18.4 15.8 9.1 4.3 -2.3 8.4 DAYS WITH MINIMUM TEMP. >=21 0 0 0 0 0 3 23 2 1 0 0 0 29 DAYS WITH MINIMUM TEMP. <=-4 12 7 2 0 0 0 0 0 0 0 0 12 33 DAYS WITH FREEZING MIN.<= 0 29 21 11 2 0 0 0 0 0 0 6 23 92 TEMPERATURE RECORDS LOWEST(C) -9.0 -8.0 -5.0 -3.0 7.0 13.0 19.0 16.0 10.0 4.0 -3.0 -8.0 -9.0 DAY 23 4 1 2 1 1 2 27 30 24 29 26 MAXIMUM AIR TEMPERATURE (C) 9.7 10.3 15.5 19.8 27.3 32.4 37.9 35.8 31.8 24.2 16.4 10.6 22.7 DAYS WITH MAXIMUM TEMP. >=30 0 0 0 0 10 26 31 31 25 0 0 0 123 DAYS WITH MAXIMUM TEMP. <= 0 1 0 0 0 0 0 0 0 0 0 0 0 1 TEMPERATURE RECORDS HIGHEST(C) 17.0 15.0 21.0 27.0 33.0 37.0 40.0 37.0 35.0 28.0 23.0 17.0 40.0 DAY 17 10 7 24 26 25 14 4 1 2 1 16 DIF. BETWEEN (MAX.-MIN.) (C) 12.6 11.7 13.8 13.1 14.4 15.4 16.0 17.4 16.0 15.1 12.1 12.9 14.3 MEAN DAILY TEMP. (MDT) (C) 3.4 4.4 8.6 13.3 20.1 24.7 29.9 27.1 23.8 16.6 10.3 4.2 15.5 COOLING DEG. DAYS(BASE 21 0C) 0.0 0.0 0.0 0.0 20.5 113.0 277.0 189.0 91.0 0.0 0.0 0.0 690.5 HEATING DEG. DAYS(BASE 18 0C) 452.5 380.0 291.0 141.5 12.5 0.0 0.0 0.0 0.0 48.5 230.0 428.5 1984.5 DEWPOINT (MEAN C) -5.9 -5.4 -7.4 -3.5 -0.0 -1.1 4.0 -1.0 -1.4 -1.3 -1.1 -6.9 -2.6 MIXING RATIO (G/KG) 3.03 3.18 2.75 3.82 4.81 4.39 6.33 4.46 4.32 4.26 4.35 2.86 4.05 VAPOUR PRESSURE (HPA) 4.08 4.26 3.68 5.11 6.45 5.87 8.39 5.95 5.78 5.75 5.85 3.84 5.42 SATURATION DEF. (HPA) 3.90 4.22 8.14 11.01 18.66 27.62 36.40 32.70 25.67 14.07 7.27 4.53 16.18 RELATIVE HUMIDITY (MEAN %) 56 55 36 37 30 19 20 17 21 32 50 50 35 RELATIVE HUMIDITY (MAX. %) 76 75 60 62 49 32 32 31 34 50 72 70 54 RELATIVE HUMIDITY (MIN. %) 34 34 17 18 16 11 12 9 10 17 30 28 20 RELATIVE HUMIDITY (MEAN% 03UTC) 67 68 54 56 45 30 31 27 33 46 65 63 49 RELATIVE HUMIDITY (MEAN% 09UTC) 44 41 23 25 20 13 15 13 14 23 38 39 26 RELATIVE HUMIDITY (MEAN% 15UTC) 52 48 26 25 21 14 16 14 16 26 44 42 29 RH=0 => RELATIVE HUMIDITY < 0.5% AMOUNT OF PRECIPITATION MM. 14.8 12.4 0.0 17.9 4.2 0.0 0.0 0.0 0.0 1.0 25.4 2.0 77.7 DAYS WITH PRECIPITATION >=10 0 0 0 0 0 0 0 0 0 0 2 0 2 DAYS WITH PRECIPITATION >= 5 1 1 0 2 0 0 0 0 0 0 2 0 6 DAYS WITH PRECIPITATION >= 1 4 3 0 5 2 0 0 0 0 1 4 2 21 DAYS WITH PRECIPITATION 6 7 2 11 5 0 0 0 1 3 7 3 45 GREATEST DAILY PRECIPITATION 9.0 6.0 0.0 9.0 2.0 0.0 0.0 0.0 0.0 1.0 10.0 1.0 10.0 DAY 3 18 ** 1 8 ** ** ** ** 22 19 6 DAY WITH THUNDER STORM 0 0 0 0 1 0 0 0 0 0 0 0 1 DAYS WITH SNOW OR SLEET 2 2 2 2 0 0 0 0 0 0 0 0 8 DAYS WITH DUST 1 1 1 0 2 2 2 0 2 4 0 1 16 WIND DIRECTION (PREVAILING) 270 270 270 270 270 270 45 135 270 270 270 270 270 PREVAILING WIND SPEED(KNOTS) 7.7 11.0 13.0 12.7 11.5 7.5 7.5 8.2 6.7 6.6 5.6 5.8 9.4 PREVAILING WIND PERCENT 24.2 26.3 35.9 39.2 27.4 19.6 15.7 22.2 21.7 16.5 15.0 11.3 21.3 CALMS PERCENT OF WIND 44.8 29.5 28.2 19.2 25.8 15.0 25.8 24.6 25.8 35.5 38.8 55.2 30.8 NO. OF WIND OBSERVATION 248 224 248 240 248 240 248 248 240 248 240 248 2920 VECTOR WIND DIRECTION (MEAN) 259 257 251 264 255 262 80 108 274 257 233 245 253 VECTOR WIND MAGNITUDE(KNOTS) 2.6 4.2 7.4 7.2 3.5 0.5 1.9 3.1 0.9 1.1 0.5 1.0 2.0 WIND STEADINESES (MEAN %) 55.3 56.0 73.3 74.2 44.3 7.7 35.8 60.8 17.6 28.2 13.5 38.5 33.3 WIND SPEED (MEAN KNOTS) 4.7 7.5 10.1 9.7 7.9 6.5 5.3 5.1 5.1 3.9 3.7 2.6 6.0 FASTEST WIND DIRECTION 270 230 210 240 270 230 90 90 300 270 250 230 270 FASTEST WIND SPEED (KNOTS) 40 40 40 40 40 25 20 20 40 20 20 30 40 DAY 31 24 6 25 31 5 25 13 11 14 20 23 DAYS WITH SKY CLEAR (0-2)/8 20 14 20 9 15 28 29 31 26 19 16 18 245 DAYS WITH P.CLOUDY (3-6)/8 9 8 9 16 11 2 2 0 4 11 7 10 89 DAYS WITH CLOUDY (7-8)/8 2 6 2 5 5 0 0 0 0 1 7 3 31 DAYS WITH VISIBILITY =< 2 KM 2 2 1 1 0 2 1 0 1 3 2 0 15 DURATION OF SUNSHINE HOURS 258.2 207.8 287.7 243.1 268.2 352.3 347.0 357.6 307.8 266.3 211.5 235.4 3342.9 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ESFAHAN (40800) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 32 37 N LONGITUDE 51 40 E DATA PROCESSING CENTER ELEVATION 1550.4 M MEANS AND EXTREMES FOR THE YEAR 1967 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL MEAN QFE PRESSURE IN HPA 842.9 838.5 837.1 838.1 840.5 837.1 833.5 836.1 839.0 845.0 842.8 841.5 839.4 MAX. QFE PRESSURE IN HPA 851.5 847.1 848.0 844.0 847.6 843.2 840.7 841.2 843.7 851.3 848.3 848.9 851.5 DAY-HOUR 13- 6 28- 6 3- 6 7- 6 3- 6 16- 6 15- 6 16- 6 15- 6 15- 6 6- 6 12- 6 MIN. QFE PRESSURE IN HPA 832.3 831.3 826.2 829.8 835.2 829.3 827.3 830.8 832.8 836.5 837.6 828.0 826.2 DAY-HOUR 22- 0 15-12 24-12 26- 9 18-12 19-15 10-12 18-15 7-12 1-15 24-21 23-12 MEAN QNH PRESSURE IN HPA 1016.0 1010.9 1009.2 1010.3 1013.2 1009.2 1005.1 1008.0 1011.4 1018.4 1015.9 1014.3 1011.8 MAX. QNH PRESSURE IN HPA 1026.0 1020.8 1021.9 1017.2 1021.4 1016.3 1013.4 1014.0 1016.9 1025.7 1022.2 1022.9 1026.0 DAY-HOUR 13- 6 28- 6 3- 6 7- 6 3- 6 16- 6 15- 6 16- 6 15- 6 15- 6 6- 6 12- 6 MIN. QNH PRESSURE IN HPA 1003.6 1002.5 996.5 1000.7 1007.0 1000.1 997.8 1001.9 1004.2 1008.5 1009.8 998.6 996.5 DAY-HOUR 22- 0 15-12 24-12 26- 9 18-12 19-15 10-12 18-15 7-12 1-15 24-21 23-12 MEAN QFF PRESSURE IN HPA 1017.1 1011.1 1006.4 1004.5 1003.0 996.2 988.9 993.5 999.0 1010.6 1012.0 1014.9 1004.8 MAX. QFF PRESSURE IN HPA 1029.4 1023.9 1021.6 1014.9 1012.8 1009.2 996.8 1002.1 1007.2 1019.4 1019.4 1024.4 1029.4 DAY-HOUR 23- 6 28- 6 3- 6 2- 6 2- 6 16-12 23- 6 3- 9 26- 3 23- 6 30-18 12- 6 MIN. QFF PRESSURE IN HPA 1002.6 1000.2 994.4 992.1 995.4 986.1 980.5 987.1 990.4 998.7 1004.9 997.5 980.5 DAY-HOUR 22- 0 15-12 24-12 25- 0 31- 9 19-12 10-12 18-12 7-12 1-12 24-21 23-12 PRESSURE AT HOUR 0000 UTC. MEAN QFE PRESSURE IN HPA 843.0 838.2 837.1 838.1 840.5 837.4 833.8 836.2 839.2 844.9 842.8 841.6 839.4 MAX. QFE PRESSURE IN HPA 849.1 845.2 845.6 842.2 845.9 841.2 839.4 840.0 842.3 849.2 846.4 847.2 849.2 DAY 13 28 4 7 3 16 15 16 15 27 6 17 MIN. QFE PRESSURE IN HPA 832.3 832.0 828.5 830.7 837.1 832.0 829.5 832.7 835.0 839.0 838.4 834.1 828.5 DAY 22 15 25 25 6 20 10 19 7 1 25 4 MEAN QNH PRESSURE IN HPA 1016.1 1010.5 1009.2 1010.4 1013.2 1009.6 1005.4 1008.1 1011.6 1018.3 1015.8 1014.4 1011.9 MAX. QNH PRESSURE IN HPA 1023.2 1018.6 1019.1 1015.1 1019.4 1014.0 1011.9 1012.6 1015.3 1023.3 1020.0 1021.0 1023.3 DAY 13 28 4 7 3 16 15 16 15 27 6 17 MIN. QNH PRESSURE IN HPA 1003.6 1003.3 999.2 1001.8 1009.2 1003.3 1000.4 1004.1 1006.8 1011.4 1010.7 1005.7 999.2 DAY 22 15 25 25 6 20 10 19 7 1 25 4 MEAN QFF PRESSURE IN HPA 1016.6 1010.1 1005.8 1004.2 1003.0 996.6 988.9 993.3 998.7 1010.1 1011.3 1014.3 1004.4 MAX. QFF PRESSURE IN HPA 1026.6 1020.0 1017.8 1012.8 1010.9 1008.6 995.2 997.1 1004.1 1016.1 1015.9 1021.0 1026.6 DAY 23 28 1 2 9 17 23 27 26 30 29 12 MIN. QFF PRESSURE IN HPA 1002.6 1001.3 996.6 992.1 996.3 989.6 983.0 989.2 992.3 1000.4 1005.0 1003.9 983.0 DAY 22 25 25 25 31 20 10 6 8 3 25 4 PRESSURE AT HOUR 0300 UTC. MEAN QFE PRESSURE IN HPA 843.2 838.8 837.8 838.7 841.1 838.2 834.6 837.1 840.0 845.5 843.2 842.0 840.0 MAX. QFE PRESSURE IN HPA 849.5 845.9 846.3 843.0 846.8 842.4 840.3 840.4 843.3 849.8 847.0 847.7 849.8 DAY 13 28 3 7 3 16 15 16 15 29 6 12 MIN. QFE PRESSURE IN HPA 833.4 832.0 829.3 830.8 836.6 832.7 830.2 833.2 835.6 839.5 839.7 834.2 829.3 DAY 22 15 25 25 6 19 10 19 7 3 20 23 MEAN QNH PRESSURE IN HPA 1016.3 1011.2 1010.0 1011.0 1013.8 1010.5 1006.3 1009.1 1012.5 1019.0 1016.3 1014.9 1012.6 MAX. QNH PRESSURE IN HPA 1023.6 1019.4 1019.9 1016.1 1020.5 1015.4 1012.9 1013.0 1016.4 1024.0 1020.7 1021.5 1024.0 DAY 13 28 3 7 3 16 15 16 15 29 6 12 MIN. QNH PRESSURE IN HPA 1004.9 1003.3 1000.1 1001.9 1008.6 1004.1 1001.2 1004.7 1007.5 1012.0 1012.2 1005.8 1000.1 DAY 22 15 25 25 6 19 10 19 7 3 20 23 MEAN QFF PRESSURE IN HPA 1018.4 1012.2 1008.3 1006.0 1004.3 997.9 990.7 995.5 1001.2 1012.5 1013.5 1016.5 1006.4 MAX. QFF PRESSURE IN HPA 1028.0 1022.5 1020.3 1014.7 1012.3 1004.4 996.8 999.3 1007.2 1019.0 1018.5 1023.9 1028.0 DAY 23 28 3 2 3 7 23 26 26 30 29 12 MIN. QFF PRESSURE IN HPA 1006.2 1003.8 999.3 993.7 998.9 991.1 984.4 990.6 994.9 1002.8 1008.1 1005.6 984.4 DAY 22 15 25 25 29 19 10 19 7 1 25 4 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ESFAHAN (40800) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 32 37 N LONGITUDE 51 40 E DATA PROCESSING CENTER ELEVATION 1550.4 M MEANS AND EXTREMES FOR THE YEAR 1967 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 0600 UTC. MEAN QFE PRESSURE IN HPA 844.6 840.1 838.8 839.5 841.8 838.7 835.1 837.7 840.8 846.6 844.4 843.2 841.0 MAX. QFE PRESSURE IN HPA 851.5 847.1 848.0 844.0 847.6 843.2 840.7 841.2 843.7 851.3 848.3 848.9 851.5 DAY 13 28 3 7 3 16 15 16 15 15 6 12 MIN. QFE PRESSURE IN HPA 836.6 834.2 830.3 830.8 837.5 833.3 830.6 834.2 836.2 840.4 840.3 832.4 830.3 DAY 21 15 24 25 6 19 10 19 7 1 20 23 MEAN QNH PRESSURE IN HPA 1017.9 1012.7 1011.2 1012.0 1014.7 1011.1 1006.8 1009.9 1013.5 1020.3 1017.7 1016.3 1013.7 MAX. QNH PRESSURE IN HPA 1026.0 1020.8 1021.9 1017.2 1021.4 1016.3 1013.4 1014.0 1016.9 1025.7 1022.2 1022.9 1026.0 DAY 13 28 3 7 3 16 15 16 15 15 6 12 MIN. QNH PRESSURE IN HPA 1008.6 1005.8 1001.3 1001.9 1009.7 1004.8 1001.6 1005.8 1008.2 1013.0 1012.9 1003.7 1001.3 DAY 21 15 24 25 6 19 10 19 7 1 20 23 MEAN QFF PRESSURE IN HPA 1019.6 1013.6 1008.7 1006.3 1004.5 998.1 990.8 995.5 1001.2 1012.5 1013.9 1017.5 1006.9 MAX. QFF PRESSURE IN HPA 1029.4 1023.9 1021.6 1014.9 1012.8 1005.4 996.8 998.7 1006.6 1019.4 1018.7 1024.4 1029.4 DAY 23 28 3 2 2 7 23 16 26 23 29 12 MIN. QFF PRESSURE IN HPA 1008.2 1005.2 1000.3 993.2 997.3 991.3 985.0 991.4 994.9 1002.9 1009.4 1004.4 985.0 DAY 21 24 25 25 31 19 10 5 7 1 25 23 PRESSURE AT HOUR 0900 UTC. MEAN QFE PRESSURE IN HPA 843.0 838.9 837.4 838.1 840.6 837.5 833.9 836.6 839.3 845.0 842.8 841.4 839.5 MAX. QFE PRESSURE IN HPA 849.8 845.9 846.7 843.0 845.9 842.2 839.2 840.0 842.1 849.6 847.0 847.0 849.8 DAY 13 28 3 7 3 16 15 16 21 15 6 16 MIN. QFE PRESSURE IN HPA 835.6 832.3 828.1 829.8 836.5 831.8 829.2 833.0 834.6 838.8 839.0 829.1 828.1 DAY 21 15 24 26 31 19 10 19 7 1 20 23 MEAN QNH PRESSURE IN HPA 1016.0 1011.3 1009.6 1010.4 1013.3 1009.7 1005.4 1008.6 1011.7 1018.4 1015.9 1014.2 1012.0 MAX. QNH PRESSURE IN HPA 1024.0 1019.4 1020.4 1016.1 1019.4 1015.1 1011.6 1012.6 1015.0 1023.7 1020.7 1020.7 1024.0 DAY 13 28 3 7 3 16 15 16 21 15 6 16 MIN. QNH PRESSURE IN HPA 1007.5 1003.6 998.7 1000.7 1008.5 1003.0 1000.0 1004.4 1006.3 1011.2 1011.4 999.9 998.7 DAY 21 15 24 26 31 19 10 19 7 1 20 23 MEAN QFF PRESSURE IN HPA 1016.5 1011.0 1006.1 1004.1 1002.6 996.2 988.8 993.7 998.6 1009.7 1011.4 1014.2 1004.4 MAX. QFF PRESSURE IN HPA 1025.9 1021.5 1019.2 1012.7 1010.4 1003.7 994.5 1002.1 1003.9 1016.0 1016.0 1021.0 1025.9 DAY 23 28 3 2 2 7 23 3 25 23 30 12 MIN. QFF PRESSURE IN HPA 1004.5 1001.5 996.4 993.7 995.4 988.4 983.1 988.9 992.1 1000.5 1007.7 999.1 983.1 DAY 30 15 24 25 31 19 10 19 7 1 8 23 PRESSURE AT HOUR 1200 UTC. MEAN QFE PRESSURE IN HPA 841.7 837.2 835.5 836.6 839.3 835.9 832.1 834.9 837.3 843.6 841.6 840.1 838.0 MAX. QFE PRESSURE IN HPA 848.3 843.7 845.2 841.2 844.1 841.2 837.6 838.4 840.3 848.2 845.8 845.4 848.3 DAY 13 28 3 7 2 16 23 15 25 15 6 16 MIN. QFE PRESSURE IN HPA 833.8 831.3 826.2 830.4 835.2 829.8 827.3 831.2 832.8 836.7 838.6 828.0 826.2 DAY 21 15 24 25 18 19 10 19 7 1 27 23 MEAN QNH PRESSURE IN HPA 1014.5 1009.4 1007.3 1008.6 1011.8 1007.8 1003.4 1006.6 1009.4 1016.8 1014.4 1012.7 1010.2 MAX. QNH PRESSURE IN HPA 1022.2 1016.9 1018.6 1014.0 1017.3 1014.0 1009.8 1010.7 1012.9 1022.1 1019.3 1018.9 1022.2 DAY 13 28 3 7 2 16 23 15 25 15 6 16 MIN. QNH PRESSURE IN HPA 1005.4 1002.5 996.5 1001.4 1007.0 1000.7 997.8 1002.3 1004.2 1008.7 1010.9 998.6 996.5 DAY 21 15 24 25 18 19 10 19 7 1 27 23 MEAN QFF PRESSURE IN HPA 1014.9 1009.0 1003.8 1002.5 1001.6 994.8 986.9 991.7 996.6 1008.6 1010.0 1012.6 1002.7 MAX. QFF PRESSURE IN HPA 1023.8 1018.6 1016.6 1010.7 1008.8 1009.2 993.8 995.7 1001.7 1014.8 1014.9 1019.4 1023.8 DAY 23 28 3 1 2 16 23 27 25 26 30 12 MIN. QFF PRESSURE IN HPA 1004.3 1000.2 994.4 993.6 996.4 986.1 980.5 987.1 990.4 998.7 1006.7 997.5 980.5 DAY 30 15 24 24 26 19 10 18 7 1 24 23 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ESFAHAN (40800) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 32 37 N LONGITUDE 51 40 E DATA PROCESSING CENTER ELEVATION 1550.4 M MEANS AND EXTREMES FOR THE YEAR 1967 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 1500 UTC. MEAN QFE PRESSURE IN HPA 842.3 837.8 835.9 836.8 839.3 835.5 831.7 834.4 837.2 844.0 842.2 840.8 838.1 MAX. QFE PRESSURE IN HPA 849.7 843.6 845.6 840.6 844.2 840.4 837.6 838.2 840.0 848.3 846.0 846.2 849.7 DAY 13 27 3 7 2 16 23 15 25 15 6 16 MIN. QFE PRESSURE IN HPA 834.6 831.9 826.4 831.0 835.5 829.3 827.3 830.8 833.1 836.5 839.2 831.0 826.4 DAY 21 14 24 25 27 19 10 18 7 1 19 23 MEAN QNH PRESSURE IN HPA 1015.3 1010.0 1007.8 1008.8 1011.7 1007.3 1002.9 1006.1 1009.3 1017.2 1015.1 1013.5 1010.4 MAX. QNH PRESSURE IN HPA 1023.9 1016.8 1019.1 1013.3 1017.5 1013.0 1009.8 1010.5 1012.6 1022.2 1019.6 1019.8 1023.9 DAY 13 27 3 7 2 16 23 15 25 15 6 16 MIN. QNH PRESSURE IN HPA 1006.3 1003.2 996.7 1002.1 1007.3 1000.1 997.8 1001.9 1004.5 1008.5 1011.6 1002.1 996.7 DAY 21 14 24 25 27 19 10 18 7 1 19 23 MEAN QFF PRESSURE IN HPA 1017.3 1010.9 1006.0 1003.8 1002.1 994.6 987.2 992.3 997.9 1010.7 1012.4 1015.0 1004.2 MAX. QFF PRESSURE IN HPA 1026.1 1019.4 1019.2 1010.4 1009.9 1001.9 994.5 996.2 1002.9 1017.0 1017.4 1022.2 1026.1 DAY 6 28 3 2 2 2 22 15 25 29 30 27 MIN. QFF PRESSURE IN HPA 1006.1 1002.9 995.5 995.6 996.2 987.0 981.0 987.7 991.6 999.6 1008.1 1002.2 981.0 DAY 21 24 24 25 27 19 10 19 11 1 24 23 PRESSURE AT HOUR 1800 UTC. MEAN QFE PRESSURE IN HPA 843.1 838.7 837.2 838.4 840.8 836.8 833.4 835.8 839.0 845.2 843.0 841.4 839.4 MAX. QFE PRESSURE IN HPA 849.7 845.4 846.0 842.5 845.8 841.4 839.6 839.4 842.4 849.5 846.8 847.2 849.7 DAY 13 27 3 7 10 2 15 15 25 15 6 15 MIN. QFE PRESSURE IN HPA 834.5 832.0 828.4 832.3 837.7 830.8 829.6 832.3 834.3 838.0 837.9 832.0 828.4 DAY 21 14 24 25 18 19 25 18 7 1 24 23 MEAN QNH PRESSURE IN HPA 1016.1 1011.1 1009.3 1010.7 1013.5 1008.9 1004.9 1007.7 1011.4 1018.6 1016.0 1014.2 1011.9 MAX. QNH PRESSURE IN HPA 1023.9 1018.9 1019.6 1015.5 1019.3 1014.2 1012.1 1011.9 1015.4 1023.6 1020.5 1021.0 1023.9 DAY 13 27 3 7 10 2 15 15 25 15 6 15 MIN. QNH PRESSURE IN HPA 1006.2 1003.3 999.1 1003.6 1009.9 1001.9 1000.5 1003.6 1005.9 1010.3 1010.1 1003.3 999.1 DAY 21 14 24 25 18 19 25 18 7 1 24 23 MEAN QFF PRESSURE IN HPA 1017.7 1011.9 1006.8 1004.9 1003.3 995.8 988.9 993.2 999.2 1011.0 1012.4 1015.3 1005.0 MAX. QFF PRESSURE IN HPA 1026.8 1020.8 1019.3 1013.6 1010.9 1003.0 995.7 996.9 1005.5 1017.3 1019.4 1021.8 1026.8 DAY 6 27 3 1 2 6 23 26 25 25 30 11 MIN. QFF PRESSURE IN HPA 1006.0 1002.0 997.3 996.2 997.9 988.4 983.6 989.2 991.8 999.6 1006.4 1003.6 983.6 DAY 21 24 24 25 28 19 9 18 7 1 24 23 PRESSURE AT HOUR 2100 UTC. MEAN QFE PRESSURE IN HPA 842.8 838.6 837.3 838.5 840.8 837.1 833.9 836.2 839.3 845.3 842.9 841.5 839.5 MAX. QFE PRESSURE IN HPA 849.4 845.4 846.0 842.4 846.2 841.6 839.5 839.5 842.6 849.2 846.4 847.2 849.4 DAY 13 27 3 6 2 2 22 15 14 26 6 15 MIN. QFE PRESSURE IN HPA 832.7 832.2 828.5 830.8 837.7 832.0 829.8 832.5 835.0 838.6 837.6 833.8 828.5 DAY 21 14 24 24 5 19 10 18 6 1 24 23 MEAN QNH PRESSURE IN HPA 1015.8 1011.0 1009.4 1010.8 1013.5 1009.2 1005.4 1008.1 1011.7 1018.7 1015.9 1014.3 1012.0 MAX. QNH PRESSURE IN HPA 1023.5 1018.9 1019.6 1015.4 1019.8 1014.4 1012.0 1012.0 1015.6 1023.3 1020.0 1021.0 1023.5 DAY 13 27 3 6 2 2 22 15 14 26 6 15 MIN. QNH PRESSURE IN HPA 1004.1 1003.5 999.2 1001.9 1009.9 1003.3 1000.7 1003.8 1006.8 1010.9 1009.8 1005.4 999.2 DAY 21 14 24 24 5 19 10 18 6 1 24 23 MEAN QFF PRESSURE IN HPA 1016.3 1010.6 1005.9 1004.3 1002.7 995.7 988.8 993.3 998.6 1010.1 1011.6 1014.3 1004.4 MAX. QFF PRESSURE IN HPA 1025.6 1020.1 1018.3 1013.2 1010.6 1002.8 995.4 1001.3 1004.5 1016.0 1018.2 1020.9 1025.6 DAY 23 27 2 1 2 2 22 3 25 25 30 11 MIN. QFF PRESSURE IN HPA 1003.4 1001.6 996.5 992.5 997.6 989.1 983.7 988.1 992.2 1000.6 1004.9 1004.8 983.7 DAY 21 24 24 24 26 30 9 18 7 2 24 3 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ESFAHAN (40800) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 32 37 N LONGITUDE 51 40 E DATA PROCESSING CENTER ELEVATION 1550.4 M MEANS AND EXTREMES FOR THE YEAR 1968 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AIR TEMPERATURE (C) 3.5 3.8 10.8 13.5 19.8 26.1 28.3 28.5 23.0 17.3 10.8 6.0 16.0 MINIMUN AIR TEMPERATURE (C) -2.1 -1.7 4.7 8.2 13.7 18.7 20.2 20.2 14.1 9.8 5.1 0.8 9.3 DAYS WITH MINIMUM TEMP. >=21 0 0 0 0 0 7 13 16 0 0 0 0 36 DAYS WITH MINIMUM TEMP. <=-4 15 7 0 0 0 0 0 0 0 0 0 2 24 DAYS WITH FREEZING MIN.<= 0 23 21 5 0 0 0 0 0 0 0 1 12 62 TEMPERATURE RECORDS LOWEST(C) -8.0 -10.0 -3.0 3.0 10.0 15.0 16.0 16.0 9.0 4.0 0.0 -4.0 -10.0 DAY 20 6 25 4 1 1 14 28 21 30 20 22 MAXIMUM AIR TEMPERATURE (C) 10.5 10.0 17.4 19.1 25.9 32.7 35.4 35.8 31.0 24.8 17.0 12.2 22.6 DAYS WITH MAXIMUM TEMP. >=30 0 0 0 0 4 28 31 31 22 1 0 0 117 DAYS WITH MAXIMUM TEMP. <= 0 0 1 0 0 0 0 0 0 0 0 0 0 1 TEMPERATURE RECORDS HIGHEST(C) 18.0 20.0 26.0 28.0 31.0 38.0 40.0 38.0 35.0 31.0 21.0 15.0 40.0 DAY 13 29 15 18 22 29 5 14 2 4 13 3 DIF. BETWEEN (MAX.-MIN.) (C) 12.6 11.7 12.7 10.9 12.2 14.0 15.2 15.6 16.9 15.0 11.9 11.4 13.3 MEAN DAILY TEMP. (MDT) (C) 4.2 4.2 11.1 13.7 19.8 25.7 27.8 28.0 22.6 17.3 11.0 6.5 16.0 COOLING DEG. DAYS(BASE 21 0C) 0.0 0.0 0.0 0.0 15.0 141.0 210.0 217.0 60.0 1.0 0.0 0.0 644.0 HEATING DEG. DAYS(BASE 18 0C) 428.5 401.5 219.0 139.5 6.0 0.0 0.0 0.0 0.0 45.5 209.5 357.5 1807.0 DEWPOINT (MEAN C) -8.2 -6.3 -4.4 0.8 3.1 1.6 -0.9 0.1 -2.0 -1.2 0.4 -3.0 -1.7 MIXING RATIO (G/KG) 2.58 2.96 3.70 5.01 6.07 5.43 4.47 4.81 4.14 4.26 4.82 3.76 4.33 VAPOUR PRESSURE (HPA) 3.47 3.97 4.95 6.70 8.11 7.23 5.96 6.42 5.56 5.74 6.49 5.06 5.81 SATURATION DEF. (HPA) 4.87 4.62 8.92 9.55 15.76 27.82 34.15 33.97 24.13 15.23 6.93 4.63 15.88 RELATIVE HUMIDITY (MEAN %) 46 52 40 47 38 23 17 17 21 31 52 55 37 RELATIVE HUMIDITY (MAX. %) 68 77 63 70 58 36 31 28 35 48 75 77 56 RELATIVE HUMIDITY (MIN. %) 24 32 22 27 20 12 9 10 10 17 33 35 21 RELATIVE HUMIDITY (MEAN% 03UTC) 58 69 56 63 53 35 28 26 30 44 71 73 51 RELATIVE HUMIDITY (MEAN% 09UTC) 33 40 28 35 25 17 11 12 14 22 41 43 27 RELATIVE HUMIDITY (MEAN% 15UTC) 38 44 30 41 29 17 12 15 19 27 41 48 30 RH=0 => RELATIVE HUMIDITY < 0.5% AMOUNT OF PRECIPITATION MM. 6.3 9.0 25.3 48.0 37.5 0.4 0.0 0.0 0.0 0.0 8.7 21.6 156.8 DAYS WITH PRECIPITATION >=10 0 0 1 1 2 0 0 0 0 0 0 1 5 DAYS WITH PRECIPITATION >= 5 1 0 3 4 2 0 0 0 0 0 0 2 12 DAYS WITH PRECIPITATION >= 1 1 4 4 10 6 0 0 0 0 0 4 3 32 DAYS WITH PRECIPITATION 3 7 5 14 11 3 0 0 0 1 8 5 57 GREATEST DAILY PRECIPITATION 6.1 4.0 12.0 16.0 16.0 0.4 0.0 0.0 0.0 0.0 3.0 11.0 16.0 DAY 16 3 5 24 29 2 ** ** ** ** 1 1 DAY WITH THUNDER STORM 1 0 0 3 4 1 0 0 0 0 1 0 10 DAYS WITH SNOW OR SLEET 1 4 1 0 0 0 0 0 0 0 0 0 6 DAYS WITH DUST 2 0 4 0 1 0 4 2 2 0 3 2 20 WIND DIRECTION (PREVAILING) 270 270 270 270 270 270 135 135 270 270 270 270 270 PREVAILING WIND SPEED(KNOTS) 8.8 7.8 8.8 8.4 6.9 7.3 8.2 8.0 5.1 7.0 5.2 6.5 7.4 PREVAILING WIND PERCENT 17.7 17.2 23.8 19.2 19.4 29.6 14.5 17.3 9.2 9.7 8.3 13.3 15.7 CALMS PERCENT OF WIND 43.5 50.9 21.8 40.8 35.9 19.2 21.4 25.4 57.5 56.3 66.7 56.9 41.2 NO. OF WIND OBSERVATION 248 232 248 240 248 240 248 248 240 247 240 248 2927 VECTOR WIND DIRECTION (MEAN) 236 255 235 257 271 294 101 109 23 234 244 248 244 VECTOR WIND MAGNITUDE(KNOTS) 3.4 1.7 4.4 1.8 1.3 1.8 1.0 1.4 0.3 0.5 0.8 1.5 1.2 WIND STEADINESES (MEAN %) 66.7 45.9 56.4 40.9 28.3 31.6 17.9 29.2 11.1 18.5 38.1 53.6 27.9 WIND SPEED (MEAN KNOTS) 5.1 3.7 7.8 4.4 4.6 5.7 5.6 4.8 2.7 2.7 2.1 2.8 4.3 FASTEST WIND DIRECTION 210 190 240 270 270 180 240 150 90 180 230 230 210 FASTEST WIND SPEED (KNOTS) 40 24 35 30 30 25 20 20 20 13 22 20 40 DAY 15 23 17 3 14 24 11 18 17 4 14 9 DAYS WITH SKY CLEAR (0-2)/8 17 7 14 6 7 28 29 21 30 26 12 17 214 DAYS WITH P.CLOUDY (3-6)/8 10 17 14 17 20 2 2 10 0 3 12 11 118 DAYS WITH CLOUDY (7-8)/8 4 5 3 7 4 0 0 0 0 2 6 3 34 DAYS WITH VISIBILITY =< 2 KM 1 3 2 0 0 0 0 0 2 0 0 1 9 DURATION OF SUNSHINE HOURS 237.2 199.5 274.6 218.7 292.5 365.9 369.2 333.6 ****** ****** ****** ****** ****** ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ESFAHAN (40800) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 32 37 N LONGITUDE 51 40 E DATA PROCESSING CENTER ELEVATION 1550.4 M MEANS AND EXTREMES FOR THE YEAR 1968 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL MEAN QFE PRESSURE IN HPA 839.2 840.0 839.2 840.1 840.8 836.6 836.7 836.4 841.0 844.3 845.1 841.8 840.1 MAX. QFE PRESSURE IN HPA 847.0 847.2 848.6 844.8 845.1 844.0 843.0 843.3 846.6 851.2 851.0 849.4 851.2 DAY-HOUR 19- 6 6- 6 27- 6 12-21 8- 6 2- 6 20- 6 30- 6 19- 6 16- 6 24- 6 21- 6 MIN. QFE PRESSURE IN HPA 830.2 823.7 831.3 830.3 835.2 829.3 828.8 831.1 835.0 837.8 840.2 835.2 823.7 DAY-HOUR 16-12 2-21 19-12 24-15 30-12 22-15 11-12 11-15 6-12 4-12 1-12 8-21 MEAN QNH PRESSURE IN HPA 1011.6 1012.6 1011.6 1012.7 1013.5 1008.6 1008.8 1008.4 1013.7 1017.6 1018.5 1014.7 1012.7 MAX. QNH PRESSURE IN HPA 1020.7 1021.0 1022.6 1018.2 1018.5 1017.2 1016.1 1016.4 1020.3 1025.6 1025.4 1023.5 1025.6 DAY-HOUR 19- 6 6- 6 27- 6 12-21 8- 6 2- 6 20- 6 30- 6 19- 6 16- 6 24- 6 21- 6 MIN. QNH PRESSURE IN HPA 1001.2 993.6 1002.5 1001.3 1007.0 1000.1 999.5 1002.2 1006.8 1010.0 1012.8 1007.0 993.6 DAY-HOUR 16-12 2-21 19-12 24-15 30-12 22-15 11-12 11-15 6-12 4-12 1-12 8-21 MEAN QFF PRESSURE IN HPA 1012.3 1013.1 1007.4 1006.7 1003.6 994.9 993.9 993.3 1002.0 1009.3 1014.3 1013.6 1005.4 MAX. QFF PRESSURE IN HPA 1026.2 1027.8 1022.7 1013.8 1010.6 1006.1 1002.9 1003.8 1012.0 1017.7 1022.7 1025.7 1027.8 DAY-HOUR 19- 6 6- 6 27- 6 13- 3 2- 6 2- 6 20- 6 28- 6 19- 3 17- 6 24- 6 22- 6 MIN. QFF PRESSURE IN HPA 999.0 993.4 996.7 996.6 997.5 986.5 983.0 986.3 992.4 998.9 1007.0 1003.0 983.0 DAY-HOUR 16- 9 3- 0 18-12 24-12 30-12 22-15 11-12 11-15 6-12 10-12 10-12 5-12 PRESSURE AT HOUR 0000 UTC. MEAN QFE PRESSURE IN HPA 839.3 839.8 839.1 840.0 841.0 836.9 836.8 836.5 841.1 844.3 845.1 841.8 840.1 MAX. QFE PRESSURE IN HPA 846.2 846.4 846.5 843.2 843.8 842.8 842.0 841.4 845.0 850.0 849.6 848.0 850.0 DAY 20 6 27 17 3 2 20 28 19 17 24 21 MIN. QFE PRESSURE IN HPA 831.8 824.0 833.2 833.0 838.2 832.0 829.1 832.0 836.9 839.7 841.4 835.4 824.0 DAY 25 3 10 25 16 23 11 13 7 25 2 9 MEAN QNH PRESSURE IN HPA 1011.7 1012.4 1011.5 1012.5 1013.7 1009.0 1008.8 1008.5 1013.9 1017.6 1018.5 1014.6 1012.7 MAX. QNH PRESSURE IN HPA 1019.8 1020.0 1020.1 1016.3 1017.0 1015.8 1014.9 1014.2 1018.4 1024.2 1023.7 1021.9 1024.2 DAY 20 6 27 17 3 2 20 28 19 17 24 21 MIN. QNH PRESSURE IN HPA 1003.0 994.0 1004.7 1004.4 1010.5 1003.3 999.9 1003.3 1009.0 1012.2 1014.2 1007.2 994.0 DAY 25 3 10 25 16 23 11 13 7 25 2 9 MEAN QFF PRESSURE IN HPA 1011.4 1012.4 1006.7 1006.4 1003.7 995.2 993.7 993.1 1001.9 1008.7 1013.8 1012.7 1005.0 MAX. QFF PRESSURE IN HPA 1023.9 1025.7 1019.8 1011.7 1008.9 1004.0 1001.6 1001.1 1008.8 1015.2 1020.1 1022.4 1025.7 DAY 20 6 27 13 3 2 20 28 21 17 25 22 MIN. QFF PRESSURE IN HPA 1001.0 993.4 999.2 999.4 999.6 988.8 983.0 986.9 994.7 1001.6 1010.1 1004.5 983.0 DAY 25 3 10 24 16 30 11 13 6 10 7 9 PRESSURE AT HOUR 0300 UTC. MEAN QFE PRESSURE IN HPA 839.5 840.3 839.6 840.6 841.5 837.8 837.7 837.4 841.9 845.0 845.5 842.2 840.7 MAX. QFE PRESSURE IN HPA 845.9 846.3 847.5 844.0 844.7 843.1 842.0 842.4 845.6 850.1 849.8 848.3 850.1 DAY 20 6 27 13 3 1 20 28 20 17 24 21 MIN. QFE PRESSURE IN HPA 832.1 826.0 833.5 832.4 838.2 833.4 830.3 833.0 837.4 840.0 841.3 835.6 826.0 DAY 25 3 10 24 30 23 11 13 7 25 2 9 MEAN QNH PRESSURE IN HPA 1012.0 1012.9 1012.1 1013.2 1014.3 1010.0 1009.9 1009.5 1014.7 1018.4 1019.0 1015.2 1013.4 MAX. QNH PRESSURE IN HPA 1019.4 1019.9 1021.3 1017.2 1018.0 1016.2 1014.9 1015.4 1019.1 1024.3 1024.0 1022.2 1024.3 DAY 20 6 27 13 3 1 20 28 20 17 24 21 MIN. QNH PRESSURE IN HPA 1003.4 996.3 1005.0 1003.7 1010.5 1004.9 1001.3 1004.4 1009.6 1012.6 1014.1 1007.5 996.3 DAY 25 3 10 24 30 23 11 13 7 25 2 9 MEAN QFF PRESSURE IN HPA 1013.7 1014.4 1008.7 1007.9 1005.0 996.6 995.5 995.3 1004.3 1011.3 1015.8 1015.1 1007.0 MAX. QFF PRESSURE IN HPA 1025.6 1027.7 1021.8 1013.8 1010.5 1005.2 1002.1 1003.6 1012.0 1017.5 1022.0 1024.9 1027.7 DAY 20 6 27 13 2 1 20 28 19 30 25 22 MIN. QFF PRESSURE IN HPA 1001.8 997.6 1000.9 999.3 1001.5 990.0 984.9 988.8 997.0 1003.8 1010.1 1005.7 984.9 DAY 7 3 10 24 21 30 11 13 7 5 18 5 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ESFAHAN (40800) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 32 37 N LONGITUDE 51 40 E DATA PROCESSING CENTER ELEVATION 1550.4 M MEANS AND EXTREMES FOR THE YEAR 1968 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 0600 UTC. MEAN QFE PRESSURE IN HPA 840.6 841.5 840.8 841.4 842.1 838.3 838.2 838.0 842.7 846.0 846.6 843.5 841.6 MAX. QFE PRESSURE IN HPA 847.0 847.2 848.6 844.6 845.1 844.0 843.0 843.3 846.6 851.2 851.0 849.4 851.2 DAY 19 6 27 8 8 2 20 30 19 16 24 21 MIN. QFE PRESSURE IN HPA 833.2 828.3 834.4 832.0 838.6 833.7 831.0 833.8 838.0 841.2 841.5 835.8 828.3 DAY 16 3 10 24 15 23 11 12 6 25 18 9 MEAN QNH PRESSURE IN HPA 1013.3 1014.3 1013.4 1014.2 1015.1 1010.5 1010.4 1010.2 1015.7 1019.6 1020.3 1016.6 1014.5 MAX. QNH PRESSURE IN HPA 1020.7 1021.0 1022.6 1017.9 1018.5 1017.2 1016.1 1016.4 1020.3 1025.6 1025.4 1023.5 1025.6 DAY 19 6 27 8 8 2 20 30 19 16 24 21 MIN. QNH PRESSURE IN HPA 1004.7 999.0 1006.1 1003.3 1010.9 1005.2 1002.1 1005.4 1010.3 1014.0 1014.3 1007.7 999.0 DAY 16 3 10 24 15 23 11 12 6 25 18 9 MEAN QFF PRESSURE IN HPA 1014.6 1015.4 1009.6 1008.0 1005.1 997.0 995.8 995.4 1003.9 1011.3 1016.3 1016.0 1007.4 MAX. QFF PRESSURE IN HPA 1026.2 1027.8 1022.7 1013.1 1010.6 1006.1 1002.9 1003.8 1011.4 1017.7 1022.7 1025.7 1027.8 DAY 19 6 27 8 2 2 20 28 19 17 24 22 MIN. QFF PRESSURE IN HPA 1001.5 1000.8 1001.2 997.0 1001.2 990.8 985.7 989.6 995.9 1004.0 1010.4 1006.4 985.7 DAY 16 3 10 24 21 30 11 12 6 5 2 9 PRESSURE AT HOUR 0900 UTC. MEAN QFE PRESSURE IN HPA 839.1 840.4 839.4 840.3 840.8 837.0 837.1 836.8 841.3 844.6 845.0 841.7 840.3 MAX. QFE PRESSURE IN HPA 846.2 846.4 847.1 843.5 844.1 842.8 841.3 841.6 845.4 850.0 850.0 847.2 850.0 DAY 19 5 27 11 8 2 20 30 20 16 24 21 MIN. QFE PRESSURE IN HPA 831.1 829.7 833.0 831.6 837.1 832.6 830.3 833.1 836.4 839.9 841.0 836.0 829.7 DAY 16 3 22 24 30 22 11 12 6 10 1 9 MEAN QNH PRESSURE IN HPA 1011.5 1013.0 1011.9 1013.0 1013.5 1009.1 1009.2 1008.8 1014.1 1017.9 1018.4 1014.6 1012.9 MAX. QNH PRESSURE IN HPA 1019.8 1020.0 1020.8 1016.6 1017.3 1015.8 1014.1 1014.4 1018.9 1024.2 1024.2 1021.0 1024.2 DAY 19 5 27 11 8 2 20 30 20 16 24 21 MIN. QNH PRESSURE IN HPA 1002.2 1000.6 1004.4 1002.8 1009.2 1004.0 1001.3 1004.5 1008.4 1012.5 1013.7 1007.9 1000.6 DAY 16 3 22 24 30 22 11 12 6 10 1 9 MEAN QFF PRESSURE IN HPA 1011.3 1013.0 1007.2 1006.4 1003.1 995.2 993.9 993.1 1001.7 1008.8 1013.6 1012.8 1005.0 MAX. QFF PRESSURE IN HPA 1023.8 1025.2 1020.5 1011.3 1008.9 1004.4 1000.3 1000.6 1009.0 1015.2 1021.2 1021.2 1025.2 DAY 19 5 27 5 2 2 20 28 19 31 24 21 MIN. QFF PRESSURE IN HPA 999.0 1002.5 998.7 998.8 999.6 989.5 984.5 987.9 993.8 1001.7 1008.4 1004.1 984.5 DAY 16 2 22 23 15 29 11 12 6 10 10 5 PRESSURE AT HOUR 1200 UTC. MEAN QFE PRESSURE IN HPA 837.9 838.8 837.6 839.0 839.5 835.3 835.6 835.1 839.6 843.0 843.8 840.7 838.8 MAX. QFE PRESSURE IN HPA 845.0 844.8 844.8 842.6 842.6 841.2 839.6 840.4 843.6 848.9 848.8 846.4 848.9 DAY 19 5 27 12 2 2 20 30 19 16 24 21 MIN. QFE PRESSURE IN HPA 830.2 828.1 831.3 830.4 835.2 830.6 828.8 831.4 835.0 837.8 840.2 835.5 828.1 DAY 16 2 19 24 30 22 11 11 6 4 1 5 MEAN QNH PRESSURE IN HPA 1010.1 1011.1 1009.8 1011.5 1011.9 1007.1 1007.5 1006.9 1012.1 1016.1 1017.0 1013.4 1011.2 MAX. QNH PRESSURE IN HPA 1018.4 1018.2 1018.2 1015.6 1015.6 1014.0 1012.1 1013.0 1016.8 1022.9 1022.8 1020.0 1022.9 DAY 19 5 27 12 2 2 20 30 19 16 24 21 MIN. QNH PRESSURE IN HPA 1001.2 998.7 1002.5 1001.4 1007.0 1001.6 999.5 1002.6 1006.8 1010.0 1012.8 1007.3 998.7 DAY 16 2 19 24 30 22 11 11 6 4 1 5 MEAN QFF PRESSURE IN HPA 1009.8 1011.1 1005.0 1005.3 1001.9 993.3 992.4 991.5 1000.1 1007.3 1012.2 1011.5 1003.5 MAX. QFF PRESSURE IN HPA 1021.6 1023.4 1017.4 1010.2 1007.9 1002.6 998.6 999.2 1006.9 1014.1 1019.1 1019.9 1023.4 DAY 19 5 26 12 2 2 20 30 19 31 24 21 MIN. QFF PRESSURE IN HPA 999.6 998.2 996.7 996.6 997.5 987.8 983.0 986.4 992.4 998.9 1007.0 1003.0 983.0 DAY 16 2 18 24 30 22 11 11 6 10 10 5 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ESFAHAN (40800) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 32 37 N LONGITUDE 51 40 E DATA PROCESSING CENTER ELEVATION 1550.4 M MEANS AND EXTREMES FOR THE YEAR 1968 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 1500 UTC. MEAN QFE PRESSURE IN HPA 838.7 839.3 838.1 839.3 839.4 834.7 835.2 834.7 839.5 843.2 844.3 841.4 839.0 MAX. QFE PRESSURE IN HPA 846.0 845.6 844.5 842.6 842.6 840.3 839.0 840.6 843.6 849.0 849.2 847.1 849.2 DAY 19 5 26 12 2 1 20 29 19 16 24 21 MIN. QFE PRESSURE IN HPA 831.2 826.7 831.6 830.3 835.6 829.3 828.8 831.1 835.0 838.3 840.8 836.0 826.7 DAY 22 2 19 24 30 22 11 11 7 4 10 15 MEAN QNH PRESSURE IN HPA 1011.1 1011.8 1010.4 1011.8 1011.9 1006.4 1007.0 1006.4 1012.0 1016.3 1017.6 1014.2 1011.4 MAX. QNH PRESSURE IN HPA 1019.6 1019.1 1017.8 1015.6 1015.6 1012.9 1011.4 1013.3 1016.8 1023.0 1023.3 1020.8 1023.3 DAY 19 5 26 12 2 1 20 29 19 16 24 21 MIN. QNH PRESSURE IN HPA 1002.3 997.1 1002.8 1001.3 1007.5 1000.1 999.5 1002.2 1006.8 1010.6 1013.5 1007.9 997.1 DAY 22 2 19 24 30 22 11 11 7 4 10 15 MEAN QFF PRESSURE IN HPA 1012.7 1013.1 1006.9 1006.4 1002.5 993.0 992.7 992.2 1001.4 1009.3 1014.4 1014.1 1004.9 MAX. QFF PRESSURE IN HPA 1025.5 1026.2 1018.3 1011.7 1008.4 1001.9 998.7 1001.2 1009.0 1016.3 1020.8 1023.6 1026.2 DAY 19 5 26 4 2 1 19 29 19 30 24 21 MIN. QFF PRESSURE IN HPA 1002.0 997.9 999.2 996.8 998.5 986.5 983.4 986.3 994.0 1000.3 1009.5 1005.8 983.4 DAY 22 2 19 24 30 22 10 11 6 4 1 5 PRESSURE AT HOUR 1800 UTC. MEAN QFE PRESSURE IN HPA 839.4 840.1 839.4 840.3 841.2 836.2 836.4 836.1 840.8 844.2 845.3 841.7 840.1 MAX. QFE PRESSURE IN HPA 846.4 846.2 846.9 844.2 844.1 842.8 841.0 841.4 845.0 849.8 849.6 847.7 849.8 DAY 19 5 26 12 2 1 19 29 18 16 24 20 MIN. QFE PRESSURE IN HPA 832.0 825.0 833.3 831.5 837.7 830.4 830.0 831.7 836.5 839.4 842.1 835.3 825.0 DAY 22 2 10 24 30 22 10 12 7 10 1 8 MEAN QNH PRESSURE IN HPA 1011.8 1012.7 1011.9 1013.0 1013.9 1008.2 1008.4 1008.1 1013.5 1017.5 1018.7 1014.6 1012.7 MAX. QNH PRESSURE IN HPA 1020.0 1019.8 1020.6 1017.5 1017.3 1015.8 1013.7 1014.2 1018.4 1024.0 1023.7 1021.5 1024.0 DAY 19 5 26 12 2 1 19 29 18 16 24 20 MIN. QNH PRESSURE IN HPA 1003.3 995.1 1004.8 1002.7 1009.9 1001.4 1000.9 1002.9 1008.5 1011.9 1015.0 1007.1 995.1 DAY 22 2 10 24 30 22 10 12 7 10 1 8 MEAN QFF PRESSURE IN HPA 1013.1 1013.5 1008.1 1006.8 1003.9 994.6 993.8 993.3 1001.7 1009.3 1014.8 1014.0 1005.6 MAX. QFF PRESSURE IN HPA 1025.6 1025.8 1020.7 1011.6 1009.4 1004.6 999.6 1001.1 1009.2 1015.5 1021.1 1024.1 1025.8 DAY 19 5 26 4 2 1 19 29 19 30 24 21 MIN. QFF PRESSURE IN HPA 1002.2 996.0 999.5 997.4 1000.2 987.1 984.6 987.3 995.1 1000.9 1010.7 1006.1 984.6 DAY 15 2 10 24 20 22 10 12 5 4 1 8 PRESSURE AT HOUR 2100 UTC. MEAN QFE PRESSURE IN HPA 839.3 840.0 839.4 840.2 841.2 836.7 836.9 836.6 841.2 844.4 845.1 841.7 840.2 MAX. QFE PRESSURE IN HPA 846.3 846.5 846.6 844.8 844.0 843.2 841.7 841.4 845.0 850.1 849.4 847.7 850.1 DAY 19 5 26 12 22 1 26 27 18 16 24 20 MIN. QFE PRESSURE IN HPA 831.8 823.7 833.0 832.0 838.2 831.5 830.4 832.0 836.5 840.2 841.4 835.2 823.7 DAY 24 2 9 24 15 22 10 12 7 24 1 8 MEAN QNH PRESSURE IN HPA 1011.7 1012.6 1011.9 1012.8 1014.0 1008.7 1009.0 1008.6 1013.9 1017.7 1018.5 1014.6 1012.8 MAX. QNH PRESSURE IN HPA 1019.9 1020.1 1020.3 1018.2 1017.2 1016.3 1014.6 1014.2 1018.4 1024.3 1023.5 1021.5 1024.3 DAY 19 5 26 12 22 1 26 27 18 16 24 20 MIN. QNH PRESSURE IN HPA 1003.0 993.6 1004.4 1003.3 1010.5 1002.7 1001.4 1003.3 1008.5 1012.8 1014.2 1007.0 993.6 DAY 24 2 9 24 15 22 10 12 7 24 1 8 MEAN QFF PRESSURE IN HPA 1011.6 1012.4 1007.2 1006.2 1003.5 994.8 993.6 993.0 1001.5 1008.8 1013.7 1012.9 1004.9 MAX. QFF PRESSURE IN HPA 1024.6 1025.6 1020.1 1012.1 1008.8 1004.5 1000.6 1000.7 1008.5 1015.3 1020.4 1022.5 1025.6 DAY 19 5 26 12 2 1 19 27 19 16 23 21 MIN. QFF PRESSURE IN HPA 999.9 993.8 999.5 999.6 1000.0 988.5 984.1 986.7 995.2 1001.5 1009.5 1004.9 984.1 DAY 15 2 9 22 15 22 10 12 5 4 13 8 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ESFAHAN (40800) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 32 37 N LONGITUDE 51 40 E DATA PROCESSING CENTER ELEVATION 1550.4 M MEANS AND EXTREMES FOR THE YEAR 1969 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AIR TEMPERATURE (C) 0.9 4.9 13.3 15.0 21.4 26.7 29.7 26.5 21.9 18.6 7.3 5.8 16.0 MINIMUN AIR TEMPERATURE (C) -3.4 -0.7 7.5 9.2 14.2 18.4 21.2 18.5 13.3 10.8 0.5 -0.7 9.1 DAYS WITH MINIMUM TEMP. >=21 0 0 0 0 0 4 18 5 0 0 0 0 27 DAYS WITH MINIMUM TEMP. <=-4 14 8 0 0 0 0 0 0 0 0 5 4 31 DAYS WITH FREEZING MIN.<= 0 24 16 0 0 0 0 0 0 0 0 18 21 79 TEMPERATURE RECORDS LOWEST(C) -15.0 -7.0 2.0 1.0 10.0 15.0 17.0 14.0 6.0 5.0 -5.0 -6.0 -15.0 DAY 9 3 24 14 1 1 14 30 15 31 17 29 MAXIMUM AIR TEMPERATURE (C) 6.3 11.6 20.4 21.3 28.3 33.7 37.1 33.4 29.6 26.2 14.7 13.4 23.0 DAYS WITH MAXIMUM TEMP. >=30 0 0 0 0 12 29 31 27 21 5 0 0 125 DAYS WITH MAXIMUM TEMP. <= 0 6 0 0 0 0 0 0 0 0 0 0 0 6 TEMPERATURE RECORDS HIGHEST(C) 18.0 18.0 27.0 28.0 33.0 38.0 41.0 39.0 34.0 30.0 19.0 17.0 41.0 DAY 23 8 31 1 15 30 23 4 9 4 1 13 DIF. BETWEEN (MAX.-MIN.) (C) 9.7 12.3 12.9 12.1 14.1 15.3 15.9 14.9 16.3 15.4 14.2 14.1 13.9 MEAN DAILY TEMP. (MDT) (C) 1.5 5.4 13.9 15.2 21.2 26.0 29.1 26.0 21.4 18.5 7.6 6.3 16.0 COOLING DEG. DAYS(BASE 21 0C) 0.0 0.0 0.0 0.0 41.5 151.0 252.5 156.0 35.5 1.5 0.0 0.0 638.0 HEATING DEG. DAYS(BASE 18 0C) 512.5 352.0 128.0 94.0 4.5 0.0 0.0 0.0 7.5 22.0 313.0 362.5 1796.0 DEWPOINT (MEAN C) -4.7 -5.0 -0.0 0.3 1.5 0.2 4.6 1.8 1.2 1.3 -4.7 -4.3 -0.7 MIXING RATIO (G/KG) 3.40 3.24 4.71 4.99 5.43 4.83 6.56 5.51 5.22 5.18 3.44 3.50 4.67 VAPOUR PRESSURE (HPA) 4.56 4.36 6.31 6.67 7.26 6.46 8.71 7.36 7.00 6.97 4.64 4.72 6.25 SATURATION DEF. (HPA) 2.44 4.88 9.73 11.38 19.52 30.01 34.82 28.84 20.81 15.57 6.19 4.96 15.76 RELATIVE HUMIDITY (MEAN %) 69 52 45 42 32 20 22 23 28 35 46 53 39 RELATIVE HUMIDITY (MAX. %) 85 76 72 66 51 34 37 38 45 57 67 75 59 RELATIVE HUMIDITY (MIN. %) 49 30 23 23 17 10 13 13 17 19 27 31 23 RELATIVE HUMIDITY (MEAN% 03UTC) 79 69 60 56 46 31 34 36 41 51 64 69 53 RELATIVE HUMIDITY (MEAN% 09UTC) 58 41 34 31 21 13 17 16 21 25 32 38 29 RELATIVE HUMIDITY (MEAN% 15UTC) 68 43 34 35 26 14 17 19 24 29 37 46 33 RH=0 => RELATIVE HUMIDITY < 0.5% AMOUNT OF PRECIPITATION MM. 49.1 1.8 19.0 18.6 6.0 0.0 0.0 0.2 0.0 0.2 9.0 6.0 109.9 DAYS WITH PRECIPITATION >=10 2 0 0 0 0 0 0 0 0 0 0 0 2 DAYS WITH PRECIPITATION >= 5 5 0 1 0 0 0 0 0 0 0 0 1 7 DAYS WITH PRECIPITATION >= 1 9 1 5 8 2 0 0 0 0 0 4 2 31 DAYS WITH PRECIPITATION 10 5 7 9 5 1 0 5 0 1 4 4 51 GREATEST DAILY PRECIPITATION 12.0 1.0 8.0 4.0 3.0 0.0 0.0 0.1 0.0 0.2 3.0 5.0 12.0 DAY 5 17 21 5 7 ** ** 29 ** 27 8 17 DAY WITH THUNDER STORM 0 1 0 2 2 1 0 0 0 0 0 0 6 DAYS WITH SNOW OR SLEET 4 2 0 0 0 0 0 0 0 0 0 0 6 DAYS WITH DUST 2 4 6 0 5 4 7 4 3 1 2 1 39 WIND DIRECTION (PREVAILING) 270 315 225 225 270 270 45 135 270 225 180 270 270 PREVAILING WIND SPEED(KNOTS) 7.1 9.4 11.0 11.0 7.2 8.0 7.5 9.7 7.0 8.5 6.1 5.6 7.7 PREVAILING WIND PERCENT 10.9 9.8 24.6 16.7 25.8 19.2 11.3 17.4 12.5 10.9 6.3 9.3 12.5 CALMS PERCENT OF WIND 71.4 50.4 33.1 31.3 27.0 30.8 38.3 28.7 45.0 53.2 71.7 65.7 45.5 NO. OF WIND OBSERVATION 248 224 248 240 248 240 248 247 240 248 240 248 2919 VECTOR WIND DIRECTION (MEAN) 247 266 246 225 273 283 43 107 225 245 149 217 243 VECTOR WIND MAGNITUDE(KNOTS) 1.2 1.4 4.9 3.4 2.8 1.4 0.4 2.2 0.3 1.2 0.4 0.9 1.2 WIND STEADINESES (MEAN %) 52.2 32.6 74.2 54.0 50.0 28.6 9.1 42.3 8.1 38.7 28.6 45.0 28.6 WIND SPEED (MEAN KNOTS) 2.3 4.3 6.6 6.3 5.6 4.9 4.4 5.2 3.7 3.1 1.4 2.0 4.2 FASTEST WIND DIRECTION 240 210 270 210 240 270 160 330 250 240 180 240 210 FASTEST WIND SPEED (KNOTS) 40 42 30 30 35 25 18 30 25 20 15 25 42 DAY 20 8 28 12 19 19 17 27 11 29 8 27 DAYS WITH SKY CLEAR (0-2)/8 12 9 3 7 17 28 28 22 29 17 24 17 213 DAYS WITH P.CLOUDY (3-6)/8 10 13 18 11 10 2 3 7 0 12 4 10 100 DAYS WITH CLOUDY (7-8)/8 9 6 10 12 4 0 0 2 1 2 2 4 52 DAYS WITH VISIBILITY =< 2 KM 5 2 3 1 0 0 0 2 0 0 1 0 14 DURATION OF SUNSHINE HOURS ****** ****** 219.4 214.7 337.0 364.2 365.0 321.1 318.1 282.5 248.3 202.7 ****** ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ESFAHAN (40800) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 32 37 N LONGITUDE 51 40 E DATA PROCESSING CENTER ELEVATION 1550.4 M MEANS AND EXTREMES FOR THE YEAR 1969 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL MEAN QFE PRESSURE IN HPA 840.2 840.9 839.5 839.4 840.2 837.8 835.1 838.9 841.6 843.3 844.3 843.2 840.4 MAX. QFE PRESSURE IN HPA 847.2 849.7 844.5 845.0 848.0 844.4 839.9 846.2 849.4 848.5 852.3 849.5 852.3 DAY-HOUR 9- 6 3- 6 3- 6 25- 6 22- 6 3- 6 16- 6 31- 6 14- 6 10- 6 23- 6 22- 6 MIN. QFE PRESSURE IN HPA 829.0 834.2 830.5 830.1 834.5 831.5 830.2 832.3 834.0 835.0 837.9 835.1 829.0 DAY-HOUR 24-18 8-12 20-12 13-12 2-15 14-15 29-15 15-15 11-12 28-12 9-12 31-12 MEAN QNH PRESSURE IN HPA 1012.8 1013.7 1012.0 1011.9 1012.8 1010.0 1006.8 1011.3 1014.4 1016.4 1017.6 1016.3 1013.0 MAX. QNH PRESSURE IN HPA 1021.0 1023.9 1017.8 1018.4 1021.9 1017.7 1012.5 1019.8 1023.5 1022.5 1026.9 1023.6 1026.9 DAY-HOUR 9- 6 3- 6 3- 6 25- 6 22- 6 3- 6 16- 6 31- 6 14- 6 10- 6 23- 6 22- 6 MIN. QNH PRESSURE IN HPA 999.8 1005.8 1001.5 1001.1 1006.2 1002.7 1001.2 1003.6 1005.6 1006.8 1010.1 1006.9 999.8 DAY-HOUR 24-18 8-12 20-12 13-12 2-15 14-15 29-15 15-15 11-12 28-12 9-12 31-12 MEAN QFF PRESSURE IN HPA 1015.2 1013.4 1006.1 1004.9 1001.9 996.1 990.9 997.3 1003.3 1007.3 1015.8 1015.4 1005.6 MAX. QFF PRESSURE IN HPA 1031.2 1029.1 1016.6 1013.2 1013.2 1005.8 998.0 1009.7 1017.4 1015.0 1027.7 1024.3 1031.2 DAY-HOUR 9- 6 3- 6 24-21 15- 6 22- 6 2- 6 13- 3 31- 6 14- 3 31- 6 23- 6 11- 3 MIN. QFF PRESSURE IN HPA 992.1 1002.2 995.0 994.5 993.0 987.7 983.7 987.4 991.5 999.6 1004.0 1003.2 983.7 DAY-HOUR 24-21 8-12 20-12 13- 0 19- 9 14-12 23-12 4-12 11-12 29- 9 8- 0 14-12 PRESSURE AT HOUR 0000 UTC. MEAN QFE PRESSURE IN HPA 840.3 840.9 839.4 839.5 840.3 838.0 835.2 838.9 841.7 843.4 844.3 843.2 840.4 MAX. QFE PRESSURE IN HPA 845.7 848.5 843.0 843.5 847.1 842.7 838.8 844.7 847.5 847.0 850.3 847.0 850.3 DAY 9 3 3 27 22 4 16 31 14 10 23 22 MIN. QFE PRESSURE IN HPA 830.6 835.3 832.6 830.8 836.2 832.9 831.8 834.6 836.8 836.3 838.2 837.2 830.6 DAY 25 14 22 13 20 15 23 8 12 29 8 27 MEAN QNH PRESSURE IN HPA 1012.9 1013.6 1011.8 1011.9 1012.9 1010.3 1007.0 1011.2 1014.5 1016.6 1017.6 1016.3 1013.1 MAX. QNH PRESSURE IN HPA 1019.2 1022.5 1016.1 1016.6 1020.8 1015.7 1011.2 1018.0 1021.3 1020.7 1024.6 1020.7 1024.6 DAY 9 3 3 27 22 4 16 31 14 10 23 22 MIN. QNH PRESSURE IN HPA 1001.6 1007.1 1004.0 1001.9 1008.2 1004.3 1003.0 1006.3 1008.9 1008.3 1010.5 1009.3 1001.6 DAY 25 14 22 13 20 15 23 8 12 29 8 27 MEAN QFF PRESSURE IN HPA 1014.8 1012.7 1005.5 1004.7 1001.9 996.3 990.8 997.0 1003.1 1006.8 1015.2 1014.7 1005.3 MAX. QFF PRESSURE IN HPA 1028.5 1026.4 1012.8 1012.2 1012.1 1004.3 996.3 1007.7 1014.3 1012.0 1024.7 1020.7 1028.5 DAY 9 3 25 15 22 2 13 31 14 31 23 11 MIN. QFF PRESSURE IN HPA 1002.1 1003.4 997.1 994.5 995.6 989.2 985.5 989.6 995.2 1000.1 1004.0 1005.2 985.5 DAY 25 9 22 13 20 15 23 4 11 29 8 14 PRESSURE AT HOUR 0300 UTC. MEAN QFE PRESSURE IN HPA 840.3 841.3 839.8 840.0 840.9 838.9 836.0 839.7 842.5 844.0 844.9 843.6 841.0 MAX. QFE PRESSURE IN HPA 845.7 848.7 843.6 843.8 847.4 843.9 839.6 845.6 848.8 847.5 850.6 848.0 850.6 DAY 1 3 25 23 22 4 16 31 14 10 23 22 MIN. QFE PRESSURE IN HPA 830.4 835.6 832.2 832.5 837.2 834.0 832.6 835.7 837.5 836.4 838.6 837.6 830.4 DAY 25 14 22 13 2 15 23 8 11 29 9 31 MEAN QNH PRESSURE IN HPA 1013.0 1014.0 1012.4 1012.6 1013.7 1011.3 1008.0 1012.2 1015.4 1017.2 1018.3 1016.8 1013.7 MAX. QNH PRESSURE IN HPA 1019.2 1022.7 1016.8 1017.0 1021.2 1017.1 1012.1 1019.1 1022.8 1021.3 1024.9 1021.9 1024.9 DAY 1 3 25 23 22 4 16 31 14 10 23 22 MIN. QNH PRESSURE IN HPA 1001.4 1007.5 1003.5 1003.8 1009.3 1005.6 1004.0 1007.6 1009.7 1008.4 1010.9 1009.8 1001.4 DAY 25 14 22 13 2 15 23 8 11 29 9 31 MEAN QFF PRESSURE IN HPA 1016.2 1014.6 1007.2 1006.1 1003.4 997.7 992.5 999.1 1005.6 1009.4 1017.8 1017.2 1007.2 MAX. QFF PRESSURE IN HPA 1029.5 1028.4 1014.9 1012.9 1013.2 1005.7 998.0 1009.4 1017.4 1014.3 1027.4 1024.3 1029.5 DAY 9 3 25 15 22 2 13 31 14 31 24 11 MIN. QFF PRESSURE IN HPA 1001.8 1007.3 998.3 998.4 998.1 990.7 987.7 992.2 996.8 1001.4 1007.4 1005.7 987.7 DAY 25 9 22 13 19 15 30 5 11 29 9 14 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ESFAHAN (40800) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 32 37 N LONGITUDE 51 40 E DATA PROCESSING CENTER ELEVATION 1550.4 M MEANS AND EXTREMES FOR THE YEAR 1969 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 0600 UTC. MEAN QFE PRESSURE IN HPA 841.5 842.5 840.8 840.8 841.5 839.3 836.6 840.4 843.3 845.0 846.0 844.9 841.9 MAX. QFE PRESSURE IN HPA 847.2 849.7 844.5 845.0 848.0 844.4 839.9 846.2 849.4 848.5 852.3 849.5 852.3 DAY 9 3 3 25 22 3 16 31 14 10 23 22 MIN. QFE PRESSURE IN HPA 832.4 837.0 832.2 832.3 837.3 834.2 833.0 836.1 838.3 837.2 840.0 838.5 832.2 DAY 23 14 22 13 2 15 23 8 11 29 9 14 MEAN QNH PRESSURE IN HPA 1014.3 1015.4 1013.5 1013.5 1014.3 1011.8 1008.6 1013.1 1016.5 1018.4 1019.5 1018.3 1014.8 MAX. QNH PRESSURE IN HPA 1021.0 1023.9 1017.8 1018.4 1021.9 1017.7 1012.5 1019.8 1023.5 1022.5 1026.9 1023.6 1026.9 DAY 9 3 3 25 22 3 16 31 14 10 23 22 MIN. QNH PRESSURE IN HPA 1003.7 1009.1 1003.5 1003.6 1009.4 1005.8 1004.4 1008.0 1010.6 1009.3 1012.6 1010.8 1003.5 DAY 23 14 22 13 2 15 23 8 11 29 9 14 MEAN QFF PRESSURE IN HPA 1017.1 1015.9 1008.0 1006.5 1003.5 997.9 992.8 999.2 1005.2 1009.2 1018.0 1018.0 1007.6 MAX. QFF PRESSURE IN HPA 1031.2 1029.1 1014.5 1013.2 1013.2 1005.8 997.7 1009.7 1016.8 1015.0 1027.7 1024.1 1031.2 DAY 9 3 25 15 22 2 13 31 14 31 23 10 MIN. QFF PRESSURE IN HPA 1000.7 1008.0 996.3 997.3 995.4 991.1 986.5 991.8 996.2 1002.0 1007.7 1007.0 986.5 DAY 23 14 22 13 19 15 29 4 11 29 9 14 PRESSURE AT HOUR 0900 UTC. MEAN QFE PRESSURE IN HPA 840.2 841.3 839.6 839.5 840.4 838.2 835.5 839.3 842.0 843.5 844.3 843.2 840.6 MAX. QFE PRESSURE IN HPA 846.0 848.4 842.8 843.7 847.0 843.2 838.8 845.4 847.5 847.3 850.8 847.8 850.8 DAY 9 3 3 25 22 3 15 31 14 10 23 22 MIN. QFE PRESSURE IN HPA 830.5 836.3 831.5 831.8 835.7 833.6 832.4 835.1 836.0 835.6 838.3 835.5 830.5 DAY 23 14 22 13 19 15 23 8 11 29 9 31 MEAN QNH PRESSURE IN HPA 1012.8 1014.1 1012.1 1012.0 1013.0 1010.5 1007.4 1011.7 1014.9 1016.6 1017.6 1016.3 1013.3 MAX. QNH PRESSURE IN HPA 1019.6 1022.3 1015.8 1016.9 1020.7 1016.3 1011.2 1018.9 1021.3 1021.1 1025.1 1021.6 1025.1 DAY 9 3 3 25 22 3 15 31 14 10 23 22 MIN. QNH PRESSURE IN HPA 1001.5 1008.3 1002.7 1003.0 1007.6 1005.1 1003.7 1006.9 1007.9 1007.5 1010.6 1007.3 1001.5 DAY 23 14 22 13 19 15 23 8 11 29 9 31 MEAN QFF PRESSURE IN HPA 1014.6 1013.5 1005.7 1004.6 1001.7 996.2 991.1 997.2 1003.0 1006.6 1015.0 1014.6 1005.3 MAX. QFF PRESSURE IN HPA 1026.5 1026.5 1013.7 1011.3 1012.0 1004.0 996.6 1008.2 1013.8 1012.9 1025.1 1020.5 1026.5 DAY 9 3 12 15 22 2 13 31 14 31 23 10 MIN. QFF PRESSURE IN HPA 997.1 1004.7 995.7 996.7 993.0 990.1 985.3 990.6 993.8 999.6 1004.9 1003.9 985.3 DAY 23 20 22 13 19 14 23 4 11 29 9 14 PRESSURE AT HOUR 1200 UTC. MEAN QFE PRESSURE IN HPA 839.1 839.5 838.1 838.1 839.0 836.7 833.8 837.5 840.2 841.9 843.0 841.8 839.1 MAX. QFE PRESSURE IN HPA 845.3 846.6 841.2 841.7 844.7 841.8 837.2 843.8 845.6 845.6 849.1 846.5 849.1 DAY 12 3 3 28 22 3 15 31 14 9 23 22 MIN. QFE PRESSURE IN HPA 829.9 834.2 830.5 830.1 835.0 831.8 830.8 832.8 834.0 835.0 837.9 835.1 829.9 DAY 23 8 20 13 2 14 23 15 11 28 9 31 MEAN QNH PRESSURE IN HPA 1011.5 1012.0 1010.4 1010.4 1011.4 1008.7 1005.4 1009.7 1012.8 1014.7 1016.0 1014.7 1011.5 MAX. QNH PRESSURE IN HPA 1018.7 1020.3 1014.0 1014.6 1018.0 1014.7 1009.3 1017.0 1019.1 1019.1 1023.2 1020.1 1023.2 DAY 12 3 3 28 22 3 15 31 14 9 23 22 MIN. QNH PRESSURE IN HPA 1000.8 1005.8 1001.5 1001.1 1006.8 1003.0 1001.9 1004.2 1005.6 1006.8 1010.1 1006.9 1000.8 DAY 23 8 20 13 2 14 23 15 11 28 9 31 MEAN QFF PRESSURE IN HPA 1013.3 1011.0 1003.9 1003.2 1000.4 994.7 989.2 995.5 1001.2 1005.0 1013.6 1013.1 1003.7 MAX. QFF PRESSURE IN HPA 1026.3 1024.1 1008.7 1009.3 1009.0 1002.3 994.9 1006.3 1011.8 1010.4 1023.2 1018.5 1026.3 DAY 9 3 25 14 22 3 13 31 14 31 23 10 MIN. QFF PRESSURE IN HPA 996.5 1002.2 995.0 994.6 993.9 987.7 983.7 987.4 991.5 999.6 1004.6 1003.2 983.7 DAY 23 8 20 13 19 14 23 4 11 28 9 14 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ESFAHAN (40800) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 32 37 N LONGITUDE 51 40 E DATA PROCESSING CENTER ELEVATION 1550.4 M MEANS AND EXTREMES FOR THE YEAR 1969 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 1500 UTC. MEAN QFE PRESSURE IN HPA 839.6 840.2 838.8 838.4 838.9 836.1 833.3 837.2 840.1 842.2 843.4 842.4 839.2 MAX. QFE PRESSURE IN HPA 846.1 847.2 843.0 843.5 844.7 841.2 836.7 843.6 845.6 845.1 849.5 847.0 849.5 DAY 9 3 3 26 21 3 26 31 13 5 23 21 MIN. QFE PRESSURE IN HPA 830.0 834.3 831.9 832.6 834.5 831.5 830.2 832.3 834.8 836.0 838.6 835.9 830.0 DAY 24 8 20 13 2 14 29 15 11 28 8 31 MEAN QNH PRESSURE IN HPA 1012.1 1012.8 1011.2 1010.7 1011.2 1008.0 1004.8 1009.3 1012.7 1015.1 1016.6 1015.4 1011.7 MAX. QNH PRESSURE IN HPA 1019.7 1021.0 1016.1 1016.6 1018.0 1014.0 1008.7 1016.8 1019.1 1018.5 1023.6 1020.7 1023.6 DAY 9 3 3 26 21 3 26 31 13 5 23 21 MIN. QNH PRESSURE IN HPA 1000.9 1005.9 1003.2 1004.0 1006.2 1002.7 1001.2 1003.6 1006.5 1007.9 1010.9 1007.8 1000.9 DAY 24 8 20 13 2 14 29 15 11 28 8 31 MEAN QFF PRESSURE IN HPA 1015.3 1013.2 1006.0 1004.2 1000.9 994.4 989.4 996.2 1002.7 1007.3 1016.0 1015.7 1005.1 MAX. QFF PRESSURE IN HPA 1029.3 1026.2 1012.3 1010.2 1009.8 1002.0 994.7 1007.3 1012.6 1012.6 1025.5 1022.2 1029.3 DAY 9 3 3 14 21 3 13 29 14 31 23 10 MIN. QFF PRESSURE IN HPA 1000.6 1004.0 997.3 997.9 994.6 988.1 984.8 988.5 994.0 1002.0 1006.1 1005.5 984.8 DAY 24 8 20 4 19 14 23 4 11 29 8 14 PRESSURE AT HOUR 1800 UTC. MEAN QFE PRESSURE IN HPA 840.3 841.0 840.0 839.5 840.4 837.5 834.8 838.9 841.4 843.4 844.3 843.1 840.4 MAX. QFE PRESSURE IN HPA 846.1 847.8 844.0 843.7 846.6 842.1 838.0 844.8 847.0 846.4 849.9 847.3 849.9 DAY 9 2 3 26 21 3 25 31 13 9 23 20 MIN. QFE PRESSURE IN HPA 829.0 835.6 833.4 833.8 836.0 832.2 831.0 834.3 835.9 837.2 839.0 836.4 829.0 DAY 24 8 22 12 19 14 22 3 11 29 8 31 MEAN QNH PRESSURE IN HPA 1012.9 1013.7 1012.6 1012.0 1013.0 1009.7 1006.5 1011.3 1014.2 1016.5 1017.6 1016.2 1013.0 MAX. QNH PRESSURE IN HPA 1019.7 1021.6 1017.2 1016.9 1020.3 1015.0 1010.3 1018.2 1020.7 1020.0 1024.1 1021.1 1024.1 DAY 9 2 3 26 21 3 25 31 13 9 23 20 MIN. QNH PRESSURE IN HPA 999.8 1007.5 1004.9 1005.4 1007.9 1003.5 1002.1 1005.9 1007.8 1009.3 1011.4 1008.4 999.8 DAY 24 8 22 12 19 14 22 3 11 29 8 31 MEAN QFF PRESSURE IN HPA 1015.7 1014.0 1007.1 1005.0 1002.2 995.7 990.8 997.5 1002.9 1007.4 1016.1 1015.9 1005.9 MAX. QFF PRESSURE IN HPA 1029.2 1026.4 1013.0 1012.3 1011.6 1003.3 996.1 1008.4 1013.9 1012.2 1025.2 1022.6 1029.2 DAY 9 3 3 14 21 1 12 29 13 31 23 10 MIN. QFF PRESSURE IN HPA 999.1 1005.5 1000.4 999.1 994.9 988.8 984.9 989.1 994.0 1002.2 1007.0 1007.3 984.9 DAY 24 8 20 17 19 14 22 3 10 29 8 14 PRESSURE AT HOUR 2100 UTC. MEAN QFE PRESSURE IN HPA 840.3 840.9 839.9 839.7 840.4 837.9 835.3 839.2 841.6 843.4 844.4 843.1 840.5 MAX. QFE PRESSURE IN HPA 845.7 848.1 843.6 843.9 847.1 842.9 838.5 844.8 847.0 846.9 849.9 847.5 849.9 DAY 8 2 2 26 21 3 15 30 13 25 23 21 MIN. QFE PRESSURE IN HPA 830.0 835.3 833.6 831.2 836.1 833.1 831.8 834.5 836.1 836.9 839.0 836.8 830.0 DAY 24 13 23 12 19 14 22 15 11 29 7 26 MEAN QNH PRESSURE IN HPA 1012.9 1013.7 1012.4 1012.2 1013.1 1010.2 1007.1 1011.7 1014.5 1016.5 1017.7 1016.1 1013.2 MAX. QNH PRESSURE IN HPA 1019.2 1022.0 1016.8 1017.1 1020.8 1015.9 1010.8 1018.2 1020.7 1020.6 1024.1 1021.3 1024.1 DAY 8 2 2 26 21 3 15 30 13 25 23 21 MIN. QNH PRESSURE IN HPA 1000.9 1007.1 1005.1 1002.3 1008.0 1004.5 1003.0 1006.2 1008.0 1009.0 1011.4 1008.9 1000.9 DAY 24 13 23 12 19 14 22 15 11 29 7 26 MEAN QFF PRESSURE IN HPA 1014.8 1012.9 1006.0 1004.8 1001.7 995.8 990.8 997.2 1002.7 1006.7 1015.2 1014.3 1005.2 MAX. QFF PRESSURE IN HPA 1027.1 1025.6 1016.6 1013.1 1011.8 1003.5 996.3 1007.4 1013.4 1012.2 1024.1 1020.4 1027.1 DAY 8 2 24 14 21 1 12 31 13 31 23 10 MIN. QFF PRESSURE IN HPA 992.1 1003.7 999.1 994.8 994.4 989.7 985.2 990.0 994.9 1001.1 1004.9 1005.0 985.2 DAY 24 20 20 12 19 14 22 3 11 28 7 31 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ESFAHAN (40800) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 32 37 N LONGITUDE 51 40 E DATA PROCESSING CENTER ELEVATION 1550.4 M MEANS AND EXTREMES FOR THE YEAR 1970 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AIR TEMPERATURE (C) 1.9 7.4 10.5 17.8 22.4 28.5 29.6 29.9 23.4 17.2 11.8 3.2 17.0 MINIMUN AIR TEMPERATURE (C) -2.7 1.4 4.6 10.7 14.4 20.0 21.8 21.0 14.5 8.4 4.3 -2.3 9.7 DAYS WITH MINIMUM TEMP. >=21 0 0 0 0 2 15 26 18 0 0 0 0 61 DAYS WITH MINIMUM TEMP. <=-4 14 2 0 0 0 0 0 0 0 0 0 13 29 DAYS WITH FREEZING MIN.<= 0 29 11 2 0 0 0 0 0 0 0 2 25 69 TEMPERATURE RECORDS LOWEST(C) -7.0 -5.0 0.0 6.0 8.0 15.0 19.0 17.0 9.0 3.0 0.0 -7.0 -7.0 DAY 29 4 7 10 3 11 7 23 21 28 26 17 MAXIMUM AIR TEMPERATURE (C) 7.6 13.8 16.7 25.2 29.5 36.0 36.6 37.9 31.6 25.8 19.8 9.9 24.2 DAYS WITH MAXIMUM TEMP. >=30 0 0 0 2 17 29 31 31 22 5 0 0 137 DAYS WITH MAXIMUM TEMP. <= 0 1 0 0 0 0 0 0 0 0 0 0 0 1 TEMPERATURE RECORDS HIGHEST(C) 14.0 17.0 26.0 31.0 36.0 39.0 40.0 40.0 37.0 32.0 24.0 17.0 40.0 DAY 4 12 31 19 24 24 1 1 3 1 8 4 DIF. BETWEEN (MAX.-MIN.) (C) 10.3 12.4 12.1 14.5 15.1 16.0 14.8 16.9 17.1 17.4 15.5 12.2 14.5 MEAN DAILY TEMP. (MDT) (C) 2.5 7.6 10.7 17.9 22.0 28.0 29.2 29.5 23.0 17.1 12.0 3.8 16.9 COOLING DEG. DAYS(BASE 21 0C) 0.0 0.0 0.0 5.5 68.0 209.5 255.0 262.5 75.0 1.5 0.0 0.0 877.0 HEATING DEG. DAYS(BASE 18 0C) 481.5 291.5 227.5 36.0 11.0 0.0 0.0 0.0 1.0 58.0 179.5 441.0 1727.0 DEWPOINT (MEAN C) -4.5 -3.8 -2.5 0.5 0.8 -0.5 4.6 2.8 0.5 -2.4 -3.6 -5.1 -1.1 MIXING RATIO (G/KG) 3.38 3.59 3.94 4.95 5.06 4.61 6.52 5.79 4.91 3.92 3.56 3.25 4.46 VAPOUR PRESSURE (HPA) 4.55 4.83 5.29 6.63 6.77 6.15 8.65 7.69 6.56 5.28 4.81 4.37 5.96 SATURATION DEF. (HPA) 2.72 5.88 8.06 14.83 22.09 34.53 34.35 36.23 24.14 15.81 9.75 3.75 17.68 RELATIVE HUMIDITY (MEAN %) 67 50 46 35 28 17 22 19 24 28 36 59 36 RELATIVE HUMIDITY (MAX. %) 83 73 69 59 45 28 33 31 39 44 54 78 53 RELATIVE HUMIDITY (MIN. %) 44 29 25 18 16 9 14 11 14 16 21 39 21 RELATIVE HUMIDITY (MEAN% 03UTC) 78 69 65 54 44 27 32 29 36 43 50 71 50 RELATIVE HUMIDITY (MEAN% 09UTC) 54 39 34 24 20 11 17 14 18 20 27 49 27 RELATIVE HUMIDITY (MEAN% 15UTC) 64 39 31 25 20 12 17 13 18 25 30 55 29 RH=0 => RELATIVE HUMIDITY < 0.5% AMOUNT OF PRECIPITATION MM. 25.1 24.1 8.5 23.3 5.0 0.0 0.0 0.0 0.0 7.0 0.2 23.7 116.9 DAYS WITH PRECIPITATION >=10 1 2 0 0 0 0 0 0 0 0 0 1 4 DAYS WITH PRECIPITATION >= 5 3 2 0 2 0 0 0 0 0 1 0 2 10 DAYS WITH PRECIPITATION >= 1 3 3 3 4 2 0 0 0 0 1 0 5 21 DAYS WITH PRECIPITATION 5 4 8 6 3 0 3 0 0 1 1 7 38 GREATEST DAILY PRECIPITATION 14.0 11.0 4.0 9.0 3.0 0.0 0.0 0.0 0.0 7.0 0.2 12.4 14.0 DAY 12 6 20 29 2 ** ** ** ** 10 29 12 DAY WITH THUNDER STORM 0 0 0 0 1 0 0 0 0 0 0 0 1 DAYS WITH SNOW OR SLEET 4 0 0 0 0 0 0 0 0 0 0 2 6 DAYS WITH DUST 1 0 1 2 1 8 10 6 8 2 0 0 39 WIND DIRECTION (PREVAILING) 270 270 270 270 270 270 45 270 135 270 270 270 270 PREVAILING WIND SPEED(KNOTS) 7.5 7.1 6.4 8.0 7.3 6.1 6.5 6.3 8.7 6.8 5.3 6.5 6.8 PREVAILING WIND PERCENT 15.3 29.5 17.7 22.5 27.4 24.2 19.8 16.5 16.3 13.3 12.1 13.3 17.0 CALMS PERCENT OF WIND 68.1 38.4 31.9 32.9 30.2 19.6 20.2 25.8 38.8 46.8 53.8 54.8 38.5 NO. OF WIND OBSERVATION 248 224 248 240 248 240 248 248 240 248 240 248 2920 VECTOR WIND DIRECTION (MEAN) 261 263 239 263 275 316 83 106 116 244 210 234 250 VECTOR WIND MAGNITUDE(KNOTS) 1.4 2.8 1.7 2.7 3.3 1.2 1.9 1.4 2.2 0.7 0.7 1.1 0.8 WIND STEADINESES (MEAN %) 66.7 66.7 34.0 48.2 64.7 23.1 33.3 25.9 52.4 21.2 26.9 42.3 19.0 WIND SPEED (MEAN KNOTS) 2.1 4.2 5.0 5.6 5.1 5.2 5.7 5.4 4.2 3.3 2.6 2.6 4.2 FASTEST WIND DIRECTION 260 240 210 270 300 250 140 130 90 270 210 150 240 FASTEST WIND SPEED (KNOTS) 16 32 22 28 25 15 20 22 20 18 18 22 32 DAY 26 19 18 2 5 20 6 15 10 9 9 12 DAYS WITH SKY CLEAR (0-2)/8 14 16 11 9 24 30 22 31 30 28 16 19 250 DAYS WITH P.CLOUDY (3-6)/8 11 9 12 15 7 0 9 0 0 3 11 7 84 DAYS WITH CLOUDY (7-8)/8 5 3 8 6 0 0 0 0 0 0 3 5 30 DAYS WITH VISIBILITY =< 2 KM 7 1 0 2 0 1 1 0 1 0 1 3 17 DURATION OF SUNSHINE HOURS 182.4 230.6 255.1 263.8 349.9 364.7 330.0 338.6 313.8 313.7 235.3 222.3 3400.2 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ESFAHAN (40800) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 32 37 N LONGITUDE 51 40 E DATA PROCESSING CENTER ELEVATION 1550.4 M MEANS AND EXTREMES FOR THE YEAR 1970 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL MEAN QFE PRESSURE IN HPA 841.1 841.3 839.9 841.6 839.7 835.9 834.2 834.5 838.8 842.8 845.0 842.8 839.8 MAX. QFE PRESSURE IN HPA 849.1 846.8 846.6 847.2 846.2 840.5 840.2 840.9 846.2 849.4 851.6 852.0 852.0 DAY-HOUR 3- 6 8- 6 26- 6 13- 6 23- 6 11- 6 9- 6 29- 6 22- 6 12- 6 15- 6 31- 6 MIN. QFE PRESSURE IN HPA 831.9 832.4 834.3 831.2 833.7 830.6 829.2 828.4 831.6 834.5 839.8 835.0 828.4 DAY-HOUR 22-15 23-12 19-15 19-15 30-15 9-15 1-15 7-15 1-15 8-15 30-12 14- 3 MEAN QNH PRESSURE IN HPA 1013.8 1014.1 1012.4 1014.5 1012.2 1007.8 1005.9 1006.2 1011.2 1015.8 1018.4 1015.9 1012.3 MAX. QNH PRESSURE IN HPA 1023.2 1020.5 1020.3 1021.0 1019.8 1013.2 1012.8 1013.6 1019.8 1023.5 1026.1 1026.5 1026.5 DAY-HOUR 3- 6 8- 6 26- 6 13- 6 23- 6 11- 6 9- 6 29- 6 22- 6 12- 6 15- 6 31- 6 MIN. QNH PRESSURE IN HPA 1003.2 1003.7 1005.9 1002.3 1005.2 1001.6 1000.0 999.1 1002.8 1006.2 1012.3 1006.8 999.1 DAY-HOUR 22-15 23-12 19-15 19-15 30-15 9-15 1-15 7-15 1-15 8-15 30-12 14- 3 MEAN QFF PRESSURE IN HPA 1015.5 1012.2 1008.5 1005.8 1000.8 992.8 990.0 990.3 999.1 1007.6 1013.7 1016.8 1004.4 MAX. QFF PRESSURE IN HPA 1025.6 1020.8 1018.0 1015.4 1007.7 1001.8 998.0 999.0 1010.9 1018.5 1022.5 1030.8 1030.8 DAY-HOUR 3- 6 4- 6 26- 6 27- 6 22- 6 11- 6 9- 6 29- 6 22- 6 27- 6 15- 3 31- 6 MIN. QFF PRESSURE IN HPA 1003.4 1001.4 998.0 990.3 991.8 985.6 983.0 982.8 988.0 995.8 1006.6 1004.8 982.8 DAY-HOUR 22-15 23-12 19-12 19-15 30-12 30-18 4-12 7-15 1-12 8-12 9-12 13- 9 PRESSURE AT HOUR 0000 UTC. MEAN QFE PRESSURE IN HPA 841.0 841.2 839.7 841.8 839.8 836.1 834.3 834.9 839.0 842.7 845.2 842.6 839.8 MAX. QFE PRESSURE IN HPA 847.7 845.7 844.8 845.9 845.0 839.1 838.7 839.2 844.6 847.8 850.3 850.7 850.7 DAY 3 4 26 13 23 12 9 30 28 12 15 31 MIN. QFE PRESSURE IN HPA 833.8 835.2 836.0 835.6 835.2 832.6 830.7 831.2 833.9 836.4 842.0 836.0 830.7 DAY 23 23 11 20 31 10 5 8 6 9 28 14 MEAN QNH PRESSURE IN HPA 1013.7 1014.0 1012.2 1014.7 1012.3 1008.0 1005.9 1006.7 1011.4 1015.8 1018.6 1015.6 1012.4 MAX. QNH PRESSURE IN HPA 1021.5 1019.2 1018.2 1019.4 1018.4 1011.5 1011.1 1011.6 1017.9 1021.6 1024.6 1025.0 1025.0 DAY 3 4 26 13 23 12 9 30 28 12 15 31 MIN. QNH PRESSURE IN HPA 1005.4 1007.0 1007.9 1007.5 1007.0 1004.0 1001.8 1002.3 1005.5 1008.4 1014.9 1007.9 1001.8 DAY 23 23 11 20 31 10 5 8 6 9 28 14 MEAN QFF PRESSURE IN HPA 1014.8 1011.5 1007.9 1005.6 1000.8 992.9 989.8 990.4 998.8 1006.9 1013.2 1015.7 1004.0 MAX. QFF PRESSURE IN HPA 1022.9 1019.5 1015.5 1013.0 1006.6 999.5 996.5 996.1 1008.3 1014.8 1020.3 1027.8 1027.8 DAY 3 4 26 27 23 12 9 30 22 27 15 31 MIN. QFF PRESSURE IN HPA 1006.6 1001.7 1000.2 996.0 993.2 988.0 984.1 984.7 990.1 997.7 1009.6 1007.7 984.1 DAY 23 19 23 19 31 30 5 8 1 9 10 14 PRESSURE AT HOUR 0300 UTC. MEAN QFE PRESSURE IN HPA 841.2 841.6 840.4 842.2 840.4 836.8 835.1 835.6 839.7 843.4 845.5 842.8 840.4 MAX. QFE PRESSURE IN HPA 848.0 845.4 845.3 846.7 846.1 839.9 839.6 840.0 845.0 848.8 850.8 851.0 851.0 DAY 3 9 26 13 23 12 9 30 23 12 15 31 MIN. QFE PRESSURE IN HPA 834.7 835.2 837.2 835.6 835.7 833.2 831.3 831.8 834.6 836.4 842.0 835.0 831.3 DAY 12 23 15 19 31 10 5 7 6 9 28 14 MEAN QNH PRESSURE IN HPA 1013.9 1014.5 1013.0 1015.1 1013.1 1008.8 1006.9 1007.4 1012.2 1016.5 1019.0 1015.9 1013.0 MAX. QNH PRESSURE IN HPA 1021.9 1018.9 1018.7 1020.4 1019.7 1012.5 1012.1 1012.6 1018.4 1022.8 1025.1 1025.4 1025.4 DAY 3 9 26 13 23 12 9 30 23 12 15 31 MIN. QNH PRESSURE IN HPA 1006.4 1007.0 1009.3 1007.5 1007.6 1004.7 1002.5 1003.0 1006.3 1008.4 1014.9 1006.8 1002.5 DAY 12 23 15 19 31 10 5 7 6 9 28 14 MEAN QFF PRESSURE IN HPA 1016.3 1013.4 1009.6 1007.2 1002.4 994.3 991.5 992.1 1000.9 1009.7 1015.5 1017.7 1005.9 MAX. QFF PRESSURE IN HPA 1025.3 1020.5 1016.9 1014.0 1007.6 1000.8 997.8 997.5 1009.8 1018.2 1022.5 1029.6 1029.6 DAY 3 4 26 27 23 12 9 30 22 27 15 31 MIN. QFF PRESSURE IN HPA 1006.5 1004.6 1001.3 995.5 994.3 989.9 986.6 986.8 992.7 999.0 1011.3 1006.8 986.6 DAY 22 19 19 19 31 30 5 8 6 9 9 14 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ESFAHAN (40800) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 32 37 N LONGITUDE 51 40 E DATA PROCESSING CENTER ELEVATION 1550.4 M MEANS AND EXTREMES FOR THE YEAR 1970 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 0600 UTC. MEAN QFE PRESSURE IN HPA 842.4 842.7 841.4 843.2 841.2 837.4 835.9 836.3 840.6 844.5 846.8 844.2 841.4 MAX. QFE PRESSURE IN HPA 849.1 846.8 846.6 847.2 846.2 840.5 840.2 840.9 846.2 849.4 851.6 852.0 852.0 DAY 3 8 26 13 23 11 9 29 22 12 15 31 MIN. QFE PRESSURE IN HPA 834.7 835.6 838.2 835.4 836.4 834.4 832.2 832.4 835.0 838.2 844.0 836.2 832.2 DAY 22 23 13 19 31 10 5 7 11 9 28 14 MEAN QNH PRESSURE IN HPA 1015.4 1015.8 1014.2 1016.3 1013.9 1009.6 1007.8 1008.2 1013.3 1017.8 1020.5 1017.5 1014.2 MAX. QNH PRESSURE IN HPA 1023.2 1020.5 1020.3 1021.0 1019.8 1013.2 1012.8 1013.6 1019.8 1023.5 1026.1 1026.5 1026.5 DAY 3 8 26 13 23 11 9 29 22 12 15 31 MIN. QNH PRESSURE IN HPA 1006.4 1007.5 1010.5 1007.2 1008.4 1006.1 1003.5 1003.7 1006.8 1010.5 1017.2 1008.2 1003.5 DAY 22 23 13 19 31 10 5 7 11 9 28 14 MEAN QFF PRESSURE IN HPA 1017.6 1014.4 1010.5 1007.9 1002.5 994.8 992.2 992.6 1001.5 1009.7 1016.2 1019.1 1006.6 MAX. QFF PRESSURE IN HPA 1025.6 1020.8 1018.0 1015.4 1007.7 1001.8 998.0 999.0 1010.9 1018.5 1022.3 1030.8 1030.8 DAY 3 4 26 27 22 11 9 29 22 27 15 31 MIN. QFF PRESSURE IN HPA 1007.0 1004.1 1002.5 994.4 994.3 990.2 987.4 987.1 992.9 1000.8 1011.0 1007.0 987.1 DAY 22 19 19 19 31 30 5 7 6 8 9 13 PRESSURE AT HOUR 0900 UTC. MEAN QFE PRESSURE IN HPA 841.0 841.7 840.5 841.9 840.1 836.6 834.9 835.1 839.3 843.2 845.4 843.1 840.2 MAX. QFE PRESSURE IN HPA 847.1 846.0 845.0 845.5 845.0 839.2 839.1 839.3 845.1 848.0 850.6 851.5 851.5 DAY 2 6 26 13 22 11 9 29 27 12 15 31 MIN. QFE PRESSURE IN HPA 832.6 834.3 836.0 833.1 835.6 833.5 831.2 830.9 834.0 837.4 842.0 835.0 830.9 DAY 22 23 19 19 31 8 5 7 11 8 30 14 MEAN QNH PRESSURE IN HPA 1013.7 1014.6 1013.1 1014.8 1012.7 1008.6 1006.7 1006.9 1011.8 1016.3 1018.9 1016.2 1012.8 MAX. QNH PRESSURE IN HPA 1020.8 1019.6 1018.4 1019.0 1018.4 1011.6 1011.5 1011.8 1018.5 1021.9 1024.9 1026.0 1026.0 DAY 2 6 26 13 22 11 9 29 27 12 15 31 MIN. QNH PRESSURE IN HPA 1004.0 1005.9 1007.9 1004.5 1007.5 1005.0 1002.3 1002.0 1005.6 1009.6 1014.9 1006.8 1002.0 DAY 22 23 19 19 31 8 5 7 11 8 30 14 MEAN QFF PRESSURE IN HPA 1014.8 1012.0 1008.8 1005.6 1000.9 993.2 990.4 990.4 999.0 1007.2 1013.2 1016.3 1004.3 MAX. QFF PRESSURE IN HPA 1022.5 1018.8 1015.8 1012.8 1007.0 999.2 996.9 996.3 1008.5 1015.5 1020.3 1028.6 1028.6 DAY 3 6 26 26 1 11 9 29 22 27 15 31 MIN. QFF PRESSURE IN HPA 1004.9 1002.3 1000.2 991.1 993.2 988.8 985.1 984.5 990.5 998.3 1008.8 1004.8 984.5 DAY 22 19 19 19 31 30 5 7 6 8 9 13 PRESSURE AT HOUR 1200 UTC. MEAN QFE PRESSURE IN HPA 840.0 840.1 838.7 840.1 838.5 834.8 833.1 833.0 837.4 841.4 843.7 841.9 838.5 MAX. QFE PRESSURE IN HPA 846.0 844.8 843.2 844.2 843.8 837.5 837.0 837.4 843.7 846.6 848.8 849.8 849.8 DAY 3 7 26 26 22 11 9 29 27 31 14 30 MIN. QFE PRESSURE IN HPA 832.1 832.4 834.6 831.6 834.2 831.8 829.6 828.8 831.8 835.4 839.8 835.5 828.8 DAY 22 23 19 19 31 8 5 7 11 8 30 13 MEAN QNH PRESSURE IN HPA 1012.6 1012.7 1011.1 1012.7 1010.8 1006.5 1004.5 1004.5 1009.5 1014.2 1016.9 1014.7 1010.9 MAX. QNH PRESSURE IN HPA 1019.6 1018.2 1016.3 1017.5 1017.0 1009.7 1009.1 1009.6 1016.9 1020.3 1022.8 1024.0 1024.0 DAY 3 7 26 26 22 11 9 29 27 31 14 30 MIN. QNH PRESSURE IN HPA 1003.4 1003.7 1006.3 1002.8 1005.8 1003.0 1000.5 999.5 1003.0 1007.2 1012.3 1007.3 999.5 DAY 22 23 19 19 31 8 5 7 11 8 30 13 MEAN QFF PRESSURE IN HPA 1013.7 1010.1 1006.7 1003.6 999.2 991.3 988.3 988.2 996.9 1005.3 1011.6 1014.8 1002.5 MAX. QFF PRESSURE IN HPA 1021.1 1016.2 1013.4 1011.8 1006.7 997.3 994.0 994.1 1007.0 1013.3 1017.8 1025.8 1025.8 DAY 3 3 26 26 1 11 9 29 22 31 5 30 MIN. QFF PRESSURE IN HPA 1004.1 1001.4 998.0 990.4 991.8 986.6 983.0 982.9 988.0 995.8 1006.6 1005.4 982.9 DAY 22 23 19 19 30 30 4 7 1 8 9 13 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ESFAHAN (40800) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 32 37 N LONGITUDE 51 40 E DATA PROCESSING CENTER ELEVATION 1550.4 M MEANS AND EXTREMES FOR THE YEAR 1970 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 1500 UTC. MEAN QFE PRESSURE IN HPA 840.7 840.5 838.7 840.2 838.2 834.1 832.4 832.5 837.2 841.4 844.0 842.2 838.5 MAX. QFE PRESSURE IN HPA 846.5 845.1 842.6 844.2 843.6 836.5 835.5 837.0 844.1 846.8 849.8 850.0 850.0 DAY 2 3 26 26 22 11 8 29 27 31 14 30 MIN. QFE PRESSURE IN HPA 831.9 833.2 834.3 831.2 833.7 830.6 829.2 828.4 831.6 834.5 839.9 835.2 828.4 DAY 22 23 19 19 30 9 1 7 1 8 30 13 MEAN QNH PRESSURE IN HPA 1013.4 1013.1 1011.0 1012.8 1010.4 1005.7 1003.7 1003.8 1009.3 1014.2 1017.2 1015.1 1010.8 MAX. QNH PRESSURE IN HPA 1020.1 1018.5 1015.6 1017.5 1016.8 1008.5 1007.3 1009.1 1017.3 1020.5 1024.0 1024.2 1024.2 DAY 2 3 26 26 22 11 8 29 27 31 14 30 MIN. QNH PRESSURE IN HPA 1003.2 1004.7 1005.9 1002.3 1005.2 1001.6 1000.0 999.1 1002.8 1006.2 1012.5 1007.0 999.1 DAY 22 23 19 19 30 9 1 7 1 8 30 13 MEAN QFF PRESSURE IN HPA 1015.7 1011.9 1007.5 1004.9 999.6 991.1 988.3 988.4 998.0 1007.4 1013.6 1016.9 1003.6 MAX. QFF PRESSURE IN HPA 1023.3 1019.2 1013.3 1012.4 1007.1 997.0 992.8 994.2 1007.7 1016.0 1020.3 1027.8 1027.8 DAY 3 3 26 26 1 11 8 29 22 31 14 30 MIN. QFF PRESSURE IN HPA 1003.4 1003.7 998.3 990.3 991.8 986.1 984.2 982.8 988.6 996.2 1007.3 1005.5 982.8 DAY 22 23 19 19 30 30 1 7 1 8 9 13 PRESSURE AT HOUR 1800 UTC. MEAN QFE PRESSURE IN HPA 841.4 841.3 840.0 841.9 839.5 835.4 833.9 834.2 838.7 842.7 844.9 843.0 839.7 MAX. QFE PRESSURE IN HPA 847.3 846.1 844.1 845.6 844.9 839.0 838.1 839.0 844.7 847.9 850.4 850.8 850.8 DAY 2 3 25 26 22 11 8 29 27 31 14 30 MIN. QFE PRESSURE IN HPA 833.4 834.7 834.8 833.7 835.1 831.0 830.4 830.6 833.6 836.1 840.5 836.4 830.4 DAY 22 23 10 19 30 30 4 6 8 8 30 13 MEAN QNH PRESSURE IN HPA 1014.2 1014.1 1012.5 1014.8 1012.0 1007.2 1005.5 1005.8 1011.1 1015.7 1018.3 1016.1 1012.3 MAX. QNH PRESSURE IN HPA 1021.1 1019.7 1017.3 1019.1 1018.3 1011.4 1010.4 1011.4 1018.0 1021.8 1024.7 1025.1 1025.1 DAY 2 3 25 26 22 11 8 29 27 31 14 30 MIN. QNH PRESSURE IN HPA 1004.9 1006.4 1006.5 1005.2 1006.9 1002.1 1001.4 1001.6 1005.1 1008.0 1013.2 1008.4 1001.4 DAY 22 23 10 19 30 30 4 6 8 8 30 13 MEAN QFF PRESSURE IN HPA 1016.3 1012.6 1008.7 1006.4 1000.6 992.4 989.8 990.2 999.3 1007.6 1014.1 1017.7 1004.6 MAX. QFF PRESSURE IN HPA 1023.6 1019.8 1015.4 1014.0 1006.8 1000.8 995.1 996.0 1008.2 1016.0 1019.7 1029.0 1029.0 DAY 2 3 25 26 1 11 8 29 21 31 15 30 MIN. QFF PRESSURE IN HPA 1005.6 1005.4 1000.9 992.6 992.8 985.6 985.1 985.0 990.7 998.0 1009.6 1007.8 985.0 DAY 22 18 19 19 30 30 4 6 1 8 9 13 PRESSURE AT HOUR 2100 UTC. MEAN QFE PRESSURE IN HPA 841.2 841.4 840.0 842.0 839.9 836.0 834.4 834.8 839.0 843.0 844.9 843.0 840.0 MAX. QFE PRESSURE IN HPA 847.3 845.9 845.0 845.6 845.1 839.9 838.4 839.0 844.6 847.8 850.5 850.6 850.6 DAY 2 3 25 26 22 11 8 29 27 31 14 30 MIN. QFE PRESSURE IN HPA 833.4 835.4 834.6 834.9 835.6 831.9 830.5 830.9 834.1 836.4 840.4 836.3 830.5 DAY 22 23 10 19 30 30 4 7 8 8 30 13 MEAN QNH PRESSURE IN HPA 1014.0 1014.2 1012.5 1014.9 1012.4 1007.9 1006.0 1006.5 1011.5 1016.1 1018.3 1016.0 1012.5 MAX. QNH PRESSURE IN HPA 1021.1 1019.4 1018.4 1019.1 1018.5 1012.5 1010.7 1011.4 1017.9 1021.6 1024.8 1024.9 1024.9 DAY 2 3 25 26 22 11 8 29 27 31 14 30 MIN. QNH PRESSURE IN HPA 1004.9 1007.2 1006.3 1006.6 1007.5 1003.2 1001.5 1002.0 1005.7 1008.4 1013.0 1008.3 1001.5 DAY 22 23 10 19 30 30 4 7 8 8 30 13 MEAN QFF PRESSURE IN HPA 1015.2 1011.6 1008.1 1005.7 1000.5 992.4 989.8 990.0 998.8 1007.2 1012.7 1016.3 1004.0 MAX. QFF PRESSURE IN HPA 1022.8 1018.7 1015.8 1013.2 1006.4 1000.6 996.1 995.8 1008.2 1015.4 1019.1 1027.7 1027.7 DAY 2 3 25 26 22 11 8 29 21 31 14 30 MIN. QFF PRESSURE IN HPA 1005.3 1004.7 999.1 994.3 993.2 986.4 983.9 984.3 990.3 997.5 1009.3 1007.2 983.9 DAY 22 18 22 19 30 30 4 7 5 8 9 13 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ESFAHAN (40800) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 32 37 N LONGITUDE 51 40 E DATA PROCESSING CENTER ELEVATION 1550.4 M MEANS AND EXTREMES FOR THE YEAR 1971 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AIR TEMPERATURE (C) 2.5 5.1 11.5 14.2 22.8 27.8 29.3 28.8 21.9 15.8 10.2 4.1 16.2 MINIMUN AIR TEMPERATURE (C) -3.3 -0.8 4.8 8.1 15.5 20.2 21.5 20.3 13.4 7.2 4.9 -1.2 9.2 DAYS WITH MINIMUM TEMP. >=21 0 0 0 0 0 14 24 13 1 0 0 0 52 DAYS WITH MINIMUM TEMP. <=-4 11 6 0 0 0 0 0 0 0 0 0 9 26 DAYS WITH FREEZING MIN.<= 0 29 17 6 1 0 0 0 0 0 0 0 20 73 TEMPERATURE RECORDS LOWEST(C) -8.0 -7.0 -2.0 0.0 11.0 16.0 17.0 18.0 8.0 3.0 1.0 -7.0 -8.0 DAY 26 3 2 3 1 1 25 27 21 16 14 22 MAXIMUM AIR TEMPERATURE (C) 9.6 11.4 18.1 20.4 29.2 34.5 36.3 36.3 29.4 24.0 16.1 10.7 23.0 DAYS WITH MAXIMUM TEMP. >=30 0 0 0 0 17 28 31 31 12 0 0 0 119 DAYS WITH MAXIMUM TEMP. <= 0 0 0 0 0 0 0 0 0 0 0 0 0 0 TEMPERATURE RECORDS HIGHEST(C) 17.0 18.0 24.0 26.0 34.0 38.0 39.0 38.0 37.0 27.0 23.0 18.0 39.0 DAY 5 23 19 28 28 23 6 7 1 1 3 7 DIF. BETWEEN (MAX.-MIN.) (C) 12.9 12.2 13.3 12.3 13.7 14.3 14.8 16.0 16.0 16.8 11.2 11.9 13.8 MEAN DAILY TEMP. (MDT) (C) 3.2 5.3 11.4 14.3 22.4 27.3 28.9 28.3 21.4 15.6 10.5 4.7 16.1 COOLING DEG. DAYS(BASE 21 0C) 0.0 0.0 0.0 0.0 52.5 190.5 244.0 226.5 57.0 0.5 0.0 0.0 771.0 HEATING DEG. DAYS(BASE 18 0C) 460.0 356.5 203.5 114.5 0.0 0.0 0.0 0.0 9.5 81.0 225.0 411.5 1861.5 DEWPOINT (MEAN C) -5.1 -5.0 -2.1 2.2 6.2 3.2 8.9 6.1 2.5 -1.2 2.6 -3.2 1.3 MIXING RATIO (G/KG) 3.19 3.22 4.12 5.58 7.21 5.97 8.93 7.31 5.55 4.27 5.53 3.67 5.38 VAPOUR PRESSURE (HPA) 4.30 4.32 5.54 7.45 9.62 7.93 11.81 9.69 7.45 5.76 7.44 4.93 7.19 SATURATION DEF. (HPA) 3.40 4.97 8.72 9.40 18.98 30.83 30.27 31.37 20.59 13.22 5.44 3.75 15.08 RELATIVE HUMIDITY (MEAN %) 61 53 43 48 36 22 29 25 29 34 63 62 42 RELATIVE HUMIDITY (MAX. %) 82 76 66 71 52 34 39 38 42 50 80 83 59 RELATIVE HUMIDITY (MIN. %) 38 32 26 30 25 14 22 17 20 21 44 39 27 RELATIVE HUMIDITY (MEAN% 03UTC) 76 71 62 63 48 33 39 36 41 48 78 78 56 RELATIVE HUMIDITY (MEAN% 09UTC) 49 40 33 39 28 17 24 19 23 25 51 46 33 RELATIVE HUMIDITY (MEAN% 15UTC) 49 41 32 37 29 17 24 19 23 26 54 55 34 RH=0 => RELATIVE HUMIDITY < 0.5% AMOUNT OF PRECIPITATION MM. 12.6 22.7 8.0 38.6 1.7 0.0 0.0 0.0 0.0 0.0 29.5 14.1 127.2 DAYS WITH PRECIPITATION >=10 0 0 0 1 0 0 0 0 0 0 2 0 3 DAYS WITH PRECIPITATION >= 5 1 4 0 4 0 0 0 0 0 0 2 1 12 DAYS WITH PRECIPITATION >= 1 5 4 2 7 0 0 0 0 0 0 4 4 26 DAYS WITH PRECIPITATION 7 7 6 11 9 1 0 0 0 0 8 8 57 GREATEST DAILY PRECIPITATION 5.0 6.0 4.0 11.0 0.6 0.0 0.0 0.0 0.0 0.0 12.0 6.0 12.0 DAY 31 1 7 10 30 ** ** ** ** ** 11 20 DAY WITH THUNDER STORM 0 0 2 1 3 1 0 1 0 0 0 0 8 DAYS WITH SNOW OR SLEET 7 1 0 0 0 0 0 0 0 0 0 1 9 DAYS WITH DUST 0 1 5 2 1 15 13 11 6 3 5 3 65 WIND DIRECTION (PREVAILING) 270 225 270 270 270 270 135 135 135 90 270 180 270 PREVAILING WIND SPEED(KNOTS) 4.8 12.1 8.3 8.6 8.8 9.5 11.2 9.8 8.2 5.5 6.5 7.3 7.7 PREVAILING WIND PERCENT 13.7 22.8 21.0 18.8 23.4 20.0 29.0 17.7 11.7 7.7 9.6 9.3 12.7 CALMS PERCENT OF WIND 63.3 40.2 41.5 41.3 34.7 33.3 29.8 38.3 59.4 57.7 58.3 60.1 46.5 NO. OF WIND OBSERVATION 248 224 248 240 248 240 248 248 239 248 240 248 2919 VECTOR WIND DIRECTION (MEAN) 251 241 238 225 282 296 113 97 88 219 213 210 223 VECTOR WIND MAGNITUDE(KNOTS) 0.9 4.4 4.3 4.0 3.3 1.9 4.5 2.7 1.1 0.6 0.8 1.6 1.2 WIND STEADINESES (MEAN %) 47.4 80.0 70.5 63.5 62.3 32.8 66.2 55.1 42.3 21.4 29.6 53.3 26.7 WIND SPEED (MEAN KNOTS) 1.9 5.5 6.1 6.3 5.3 5.8 6.8 4.9 2.6 2.8 2.7 3.0 4.5 FASTEST WIND DIRECTION 240 240 210 240 280 90 90 90 120 240 240 240 210 FASTEST WIND SPEED (KNOTS) 20 26 40 35 25 20 25 19 12 20 22 23 40 DAY 17 14 15 23 18 17 17 8 4 9 5 20 DAYS WITH SKY CLEAR (0-2)/8 20 20 10 13 11 27 25 29 30 30 10 17 242 DAYS WITH P.CLOUDY (3-6)/8 5 5 17 9 16 3 6 2 0 1 10 12 86 DAYS WITH CLOUDY (7-8)/8 6 3 4 8 4 0 0 0 0 0 10 2 37 DAYS WITH VISIBILITY =< 2 KM 5 1 0 1 0 1 1 0 1 0 0 1 11 DURATION OF SUNSHINE HOURS 216.1 240.4 244.2 244.2 272.4 313.9 320.1 325.3 327.3 311.8 168.7 210.7 3195.1 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ESFAHAN (40800) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 32 37 N LONGITUDE 51 40 E DATA PROCESSING CENTER ELEVATION 1550.4 M MEANS AND EXTREMES FOR THE YEAR 1971 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL MEAN QFE PRESSURE IN HPA 843.9 838.5 841.5 838.8 839.3 833.9 835.7 835.6 842.3 844.4 844.3 841.1 839.9 MAX. QFE PRESSURE IN HPA 854.2 847.1 847.6 845.2 843.9 839.4 840.8 841.2 848.7 851.3 852.2 851.0 854.2 DAY-HOUR 3- 6 16- 6 17- 6 21- 6 4- 6 1- 6 26- 3 25- 6 24- 6 11- 6 20- 6 11- 6 MIN. QFE PRESSURE IN HPA 834.0 823.5 833.4 830.2 833.9 828.5 831.8 829.0 834.6 838.0 838.0 832.9 823.5 DAY-HOUR 13-21 13-12 20-12 13-12 21-15 28-15 21-15 9-15 2-15 3-12 18- 9 20- 0 MEAN QNH PRESSURE IN HPA 1017.1 1010.8 1014.4 1011.2 1011.7 1005.4 1007.5 1007.5 1015.2 1017.7 1017.5 1013.8 1012.5 MAX. QNH PRESSURE IN HPA 1029.1 1020.8 1021.4 1018.6 1017.1 1011.9 1013.5 1014.0 1022.7 1025.7 1026.8 1025.4 1029.1 DAY-HOUR 3- 6 16- 6 17- 6 21- 6 4- 6 1- 6 26- 3 25- 6 24- 6 11- 6 20- 6 11- 6 MIN. QNH PRESSURE IN HPA 1005.6 993.4 1004.9 1001.2 1005.5 999.2 1003.0 999.8 1006.3 1010.3 1010.3 1004.3 993.4 DAY-HOUR 13-21 13-12 20-12 13-12 21-15 28-15 21-15 9-15 2-15 3-12 18- 9 20- 0 MEAN QFF PRESSURE IN HPA 1018.5 1010.4 1009.8 1004.5 999.8 990.6 991.6 992.0 1004.1 1010.4 1013.6 1013.9 1004.9 MAX. QFF PRESSURE IN HPA 1029.6 1022.7 1018.8 1012.8 1007.0 999.5 1000.5 1000.0 1014.4 1019.4 1024.6 1024.4 1029.6 DAY-HOUR 5- 6 16- 6 16- 6 20- 6 4- 6 1- 3 26- 3 25- 3 24- 3 11- 6 20- 6 11- 6 MIN. QFF PRESSURE IN HPA 1004.0 991.1 996.8 992.9 990.9 983.6 986.6 984.2 990.2 999.9 1004.0 1002.1 983.6 DAY-HOUR 13-12 13-12 20-12 13-12 28-12 28-12 22-12 9-15 2-15 1-15 5-12 20- 0 PRESSURE AT HOUR 0000 UTC. MEAN QFE PRESSURE IN HPA 844.0 838.2 841.4 838.5 839.3 834.0 835.8 835.8 842.4 844.4 844.3 841.0 839.9 MAX. QFE PRESSURE IN HPA 852.6 843.4 846.2 843.2 842.6 838.0 840.2 839.5 847.5 848.6 850.0 849.0 852.6 DAY 5 17 18 28 8 1 26 25 24 15 21 11 MIN. QFE PRESSURE IN HPA 834.4 825.4 833.8 833.9 835.2 830.1 833.0 832.0 836.4 838.4 838.6 832.9 825.4 DAY 14 14 21 2 11 12 9 10 1 1 11 20 MEAN QNH PRESSURE IN HPA 1017.3 1010.5 1014.2 1010.8 1011.7 1005.6 1007.7 1007.7 1015.4 1017.7 1017.6 1013.7 1012.5 MAX. QNH PRESSURE IN HPA 1027.2 1016.5 1019.8 1016.3 1015.6 1010.3 1012.8 1012.0 1021.3 1022.6 1024.2 1023.0 1027.2 DAY 5 17 18 28 8 1 26 25 24 15 21 11 MIN. QNH PRESSURE IN HPA 1006.1 995.6 1005.4 1005.5 1007.0 1001.1 1004.4 1003.3 1008.4 1010.7 1010.9 1004.3 995.6 DAY 14 14 21 2 11 12 9 10 1 1 11 20 MEAN QFF PRESSURE IN HPA 1017.9 1009.4 1009.2 1003.9 999.9 990.7 991.6 992.0 1003.9 1009.9 1012.9 1013.1 1004.5 MAX. QFF PRESSURE IN HPA 1025.8 1019.2 1016.4 1009.5 1005.6 997.4 998.9 997.1 1012.2 1016.2 1021.2 1021.3 1025.8 DAY 25 2 3 3 8 1 26 25 21 14 21 12 MIN. QFF PRESSURE IN HPA 1005.4 993.8 998.3 996.9 993.4 985.2 987.1 987.1 993.2 1001.2 1006.1 1002.1 985.2 DAY 14 14 20 13 22 12 9 10 1 1 18 20 PRESSURE AT HOUR 0300 UTC. MEAN QFE PRESSURE IN HPA 844.1 838.8 842.1 839.3 840.1 834.9 836.8 836.7 843.1 845.0 844.6 841.3 840.6 MAX. QFE PRESSURE IN HPA 852.7 844.3 846.3 844.0 842.9 839.0 840.8 840.7 848.2 849.9 850.8 849.5 852.7 DAY 5 16 18 28 4 1 26 25 23 11 20 11 MIN. QFE PRESSURE IN HPA 834.8 829.5 833.9 832.9 835.6 831.0 833.9 833.0 837.4 839.0 838.8 833.3 829.5 DAY 14 14 21 13 11 12 23 10 1 1 18 20 MEAN QNH PRESSURE IN HPA 1017.3 1011.2 1015.0 1011.7 1012.7 1006.6 1008.8 1008.7 1016.2 1018.4 1018.0 1014.1 1013.2 MAX. QNH PRESSURE IN HPA 1027.4 1017.6 1019.9 1017.2 1015.9 1011.4 1013.5 1013.4 1022.1 1024.1 1025.1 1023.6 1027.4 DAY 5 16 18 28 4 1 26 25 23 11 20 11 MIN. QNH PRESSURE IN HPA 1006.5 1000.4 1005.5 1004.3 1007.5 1002.1 1005.5 1004.4 1009.6 1011.4 1011.2 1004.8 1000.4 DAY 14 14 21 13 11 12 23 10 1 1 18 20 MEAN QFF PRESSURE IN HPA 1019.6 1011.6 1011.2 1005.7 1001.6 992.3 993.7 994.2 1006.0 1012.2 1015.0 1015.2 1006.5 MAX. QFF PRESSURE IN HPA 1028.3 1020.3 1018.4 1011.5 1006.7 999.5 1000.5 1000.0 1014.4 1018.4 1023.4 1023.0 1028.3 DAY 5 2 16 3 4 1 26 25 24 11 20 12 MIN. QFF PRESSURE IN HPA 1007.4 999.5 1000.7 995.8 995.1 987.1 990.5 988.5 994.2 1001.1 1007.9 1004.7 987.1 DAY 14 13 15 13 28 28 23 10 2 1 18 20 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ESFAHAN (40800) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 32 37 N LONGITUDE 51 40 E DATA PROCESSING CENTER ELEVATION 1550.4 M MEANS AND EXTREMES FOR THE YEAR 1971 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 0600 UTC. MEAN QFE PRESSURE IN HPA 845.5 840.1 843.0 840.1 840.8 835.4 837.2 837.4 843.9 846.3 845.8 842.5 841.5 MAX. QFE PRESSURE IN HPA 854.2 847.1 847.6 845.2 843.9 839.4 840.2 841.2 848.7 851.3 852.2 851.0 854.2 DAY 3 16 17 21 4 1 26 25 24 11 20 11 MIN. QFE PRESSURE IN HPA 837.0 829.8 834.6 832.8 836.9 831.7 834.2 833.2 838.0 840.5 839.8 835.8 829.8 DAY 14 13 21 13 11 28 23 9 2 1 18 20 MEAN QNH PRESSURE IN HPA 1019.0 1012.6 1016.0 1012.7 1013.5 1007.2 1009.4 1009.6 1017.1 1019.9 1019.3 1015.5 1014.3 MAX. QNH PRESSURE IN HPA 1029.1 1020.8 1021.4 1018.6 1017.1 1011.9 1012.8 1014.0 1022.7 1025.7 1026.8 1025.4 1029.1 DAY 3 16 17 21 4 1 26 25 24 11 20 11 MIN. QNH PRESSURE IN HPA 1009.1 1000.7 1006.3 1004.2 1009.0 1002.9 1005.8 1004.7 1010.3 1013.2 1012.3 1007.7 1000.7 DAY 14 13 21 13 11 28 23 9 2 1 18 20 MEAN QFF PRESSURE IN HPA 1021.0 1012.7 1011.7 1006.4 1001.6 992.6 993.7 994.3 1006.0 1012.7 1015.9 1016.1 1007.1 MAX. QFF PRESSURE IN HPA 1029.6 1022.7 1018.8 1012.8 1007.0 998.7 999.5 999.8 1014.0 1019.4 1024.6 1024.4 1029.6 DAY 5 16 16 20 4 1 25 26 24 11 20 11 MIN. QFF PRESSURE IN HPA 1010.0 1000.0 999.9 996.5 995.6 987.2 990.2 988.8 994.5 1003.0 1008.5 1007.8 987.2 DAY 14 13 15 13 28 28 23 9 2 1 18 20 PRESSURE AT HOUR 0900 UTC. MEAN QFE PRESSURE IN HPA 844.3 839.1 842.0 839.1 839.7 834.4 836.2 836.2 842.8 844.8 844.5 841.3 840.4 MAX. QFE PRESSURE IN HPA 853.0 845.6 846.5 843.8 842.8 838.4 839.4 840.0 847.7 849.8 851.6 850.0 853.0 DAY 3 16 17 21 4 1 25 25 23 11 20 11 MIN. QFE PRESSURE IN HPA 836.0 827.0 834.6 831.2 836.2 830.4 833.7 831.6 837.0 839.7 838.0 834.9 827.0 DAY 14 13 21 13 11 28 23 9 2 1 18 20 MEAN QNH PRESSURE IN HPA 1017.6 1011.5 1014.9 1011.5 1012.2 1006.1 1008.1 1008.1 1015.8 1018.2 1017.8 1014.1 1013.0 MAX. QNH PRESSURE IN HPA 1027.7 1019.1 1020.1 1017.0 1015.8 1010.7 1011.9 1012.6 1021.5 1024.0 1026.1 1024.2 1027.7 DAY 3 16 17 21 4 1 25 25 23 11 20 11 MIN. QNH PRESSURE IN HPA 1007.9 997.4 1006.3 1002.3 1008.2 1001.4 1005.2 1002.8 1009.1 1012.2 1010.3 1006.6 997.4 DAY 14 13 21 13 11 28 23 9 2 1 18 20 MEAN QFF PRESSURE IN HPA 1018.4 1010.6 1009.8 1004.5 999.8 991.0 991.7 992.1 1003.9 1010.1 1013.2 1013.6 1004.9 MAX. QFF PRESSURE IN HPA 1026.1 1021.2 1017.9 1011.5 1005.3 997.0 998.8 997.2 1011.9 1017.2 1023.5 1022.5 1026.1 DAY 6 2 16 20 4 1 25 26 23 11 20 11 MIN. QFF PRESSURE IN HPA 1007.3 995.5 999.7 994.0 993.9 985.0 988.0 986.2 992.3 1001.8 1004.3 1005.6 985.0 DAY 14 13 15 13 28 28 9 9 2 1 18 20 PRESSURE AT HOUR 1200 UTC. MEAN QFE PRESSURE IN HPA 842.7 837.3 840.2 837.7 838.0 832.7 834.5 834.3 841.0 843.0 843.0 839.9 838.7 MAX. QFE PRESSURE IN HPA 851.4 843.7 844.8 842.3 841.0 836.1 838.0 838.1 845.8 847.9 850.0 847.7 851.4 DAY 3 16 16 21 4 1 25 25 23 11 20 11 MIN. QFE PRESSURE IN HPA 834.1 823.5 833.4 830.2 834.4 828.9 832.0 830.0 835.1 838.0 838.0 834.6 823.5 DAY 13 13 20 13 21 28 22 9 2 3 18 20 MEAN QNH PRESSURE IN HPA 1015.8 1009.4 1012.8 1009.9 1010.3 1004.1 1006.2 1006.0 1013.7 1016.1 1016.1 1012.5 1011.1 MAX. QNH PRESSURE IN HPA 1025.8 1016.9 1018.2 1015.3 1013.7 1008.0 1010.3 1010.4 1019.3 1021.8 1024.2 1021.5 1025.8 DAY 3 16 16 21 4 1 25 25 23 11 20 11 MIN. QNH PRESSURE IN HPA 1005.7 993.4 1004.9 1001.2 1006.1 999.7 1003.3 1000.9 1006.9 1010.3 1010.3 1006.3 993.4 DAY 13 13 20 13 21 28 22 9 2 3 18 20 MEAN QFF PRESSURE IN HPA 1016.4 1008.2 1007.7 1002.9 998.2 989.0 989.8 990.1 1002.2 1008.3 1011.5 1011.9 1003.0 MAX. QFF PRESSURE IN HPA 1024.0 1018.2 1015.0 1009