STATION DEHLORAN (40796) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 32 41 N LONGITUDE 47 16 E DATA PROCESSING CENTER ELEVATION 232.0 M MEANS AND EXTREMES FOR THE YEAR 1987 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AIR TEMPERATURE (C) 14.5 17.8 17.2 25.9 34.8 38.6 40.4 39.1 35.6 26.4 21.0 14.3 27.1 MINIMUN AIR TEMPERATURE (C) 7.9 11.6 12.1 18.0 26.9 28.7 31.1 30.1 27.7 21.1 14.3 9.6 19.9 DAYS WITH MINIMUM TEMP. >=21 0 0 0 9 31 29 31 31 29 15 0 0 175 DAYS WITH MINIMUM TEMP. <=-4 0 0 0 0 0 0 0 0 0 0 0 0 0 DAYS WITH FREEZING MIN.<= 0 0 0 0 0 0 0 0 0 0 0 0 0 0 TEMPERATURE RECORDS LOWEST(C) 3.0 6.0 5.2 11.6 23.2 22.8 25.6 22.7 23.6 13.2 9.0 1.8 1.8 DAY 1 11 21 5 14 21 30 20 30 28 29 29 MAXIMUM AIR TEMPERATURE (C) 19.0 22.3 21.2 30.5 39.5 43.8 45.9 45.1 41.2 30.7 26.5 18.3 32.0 DAYS WITH MAXIMUM TEMP. >=30 0 0 0 17 31 29 31 31 30 17 3 0 189 DAYS WITH MAXIMUM TEMP. <= 0 0 0 0 0 0 0 0 0 0 0 0 0 0 TEMPERATURE RECORDS HIGHEST(C) 24.0 27.5 27.0 39.4 42.2 48.0 48.6 49.8 45.0 39.6 30.6 24.0 49.8 DAY 31 2 2 30 15 15 24 14 9 3 18 1 DIF. BETWEEN (MAX.-MIN.) (C) 11.1 10.7 9.1 12.5 12.6 15.1 14.8 15.0 13.5 9.6 12.2 8.7 12.1 MEAN DAILY TEMP. (MDT) (C) 13.5 16.9 16.6 24.2 33.2 36.3 38.5 37.6 34.5 25.9 20.4 14.0 26.0 COOLING DEG. DAYS(BASE 21 0C) 0.0 1.6 0.8 116.2 378.3 426.5 542.4 515.2 388.6 142.9 18.8 0.0 2531.4 HEATING DEG. DAYS(BASE 18 0C) 139.9 42.8 60.2 1.9 0.0 0.0 0.0 0.0 0.0 0.0 4.9 125.9 375.5 DEWPOINT (MEAN C) 3.0 4.3 7.5 6.5 9.5 12.9 11.8 12.1 11.4 13.7 8.2 8.0 9.1 MIXING RATIO (G/KG) 4.97 5.43 6.87 6.45 8.08 10.51 9.48 9.81 9.29 10.57 7.36 7.03 7.99 VAPOUR PRESSURE (HPA) 7.88 8.59 10.79 10.12 12.58 16.21 14.61 15.11 14.41 16.48 11.57 11.11 12.46 SATURATION DEF. (HPA) 9.14 12.44 9.31 25.10 44.19 54.21 62.65 57.84 45.33 19.46 14.14 5.77 29.97 RELATIVE HUMIDITY (MEAN %) 49 45 56 32 23 25 20 22 25 51 48 70 39 RELATIVE HUMIDITY (MAX. %) 65 64 75 46 30 37 30 31 35 62 63 83 52 RELATIVE HUMIDITY (MIN. %) 34 31 42 22 18 17 13 15 18 40 34 55 28 RELATIVE HUMIDITY (MEAN% 03UTC) 61 61 70 43 28 35 29 27 33 56 58 77 48 RELATIVE HUMIDITY (MEAN% 09UTC) 44 38 50 30 21 23 18 18 21 46 40 63 34 RELATIVE HUMIDITY (MEAN% 15UTC) 47 37 48 27 21 20 16 20 25 50 44 71 36 RH=0 => RELATIVE HUMIDITY < 0.5% AMOUNT OF PRECIPITATION MM. 0.1 13.0 57.3 7.4 0.2 0.0 4.9 1.0 0.0 44.8 16.2 84.0 228.9 DAYS WITH PRECIPITATION >=10 0 0 3 0 0 0 0 0 0 1 1 4 9 DAYS WITH PRECIPITATION >= 5 0 1 4 0 0 0 0 0 0 3 1 4 13 DAYS WITH PRECIPITATION >= 1 0 3 10 3 0 0 3 1 0 9 2 6 37 DAYS WITH PRECIPITATION 2 8 14 7 3 0 3 1 0 14 5 9 66 GREATEST DAILY PRECIPITATION 0.1 8.0 21.0 3.1 0.1 0.0 2.0 1.0 0.0 14.0 14.0 25.0 25.0 DAY 25 9 4 3 5 ** 30 10 ** 25 2 20 DAY WITH THUNDER STORM 1 0 4 6 4 0 2 1 0 8 0 3 29 DAYS WITH SNOW OR SLEET 0 0 0 0 0 0 0 0 0 0 0 0 0 DAYS WITH DUST 3 3 4 12 23 20 18 1 15 1 0 1 101 WIND DIRECTION (PREVAILING) 135 90 90 270 315 270 315 315 315 90 90 90 315 PREVAILING WIND SPEED(KNOTS) 18.6 16.1 15.3 12.7 10.5 10.5 10.5 11.6 9.3 13.0 7.4 12.9 10.2 PREVAILING WIND PERCENT 14.2 20.7 21.8 15.5 25.6 31.1 23.1 27.4 25.8 13.7 11.8 23.0 14.1 CALMS PERCENT OF WIND 63.9 61.4 36.3 32.2 12.8 21.0 48.4 22.6 29.8 42.5 67.8 46.4 39.5 NO. OF WIND OBSERVATION 155 145 179 174 180 167 186 186 178 153 152 183 2038 VECTOR WIND DIRECTION (MEAN) 126 110 112 288 325 288 308 299 290 118 95 111 337 VECTOR WIND MAGNITUDE(KNOTS) 3.2 4.0 4.1 1.0 3.7 5.9 3.2 3.9 3.2 2.5 0.8 3.5 0.3 WIND STEADINESES (MEAN %) 71.1 80.0 50.6 12.3 40.2 80.8 56.1 54.2 60.4 55.6 34.8 64.8 4.9 WIND SPEED (MEAN KNOTS) 4.5 5.0 8.1 8.1 9.2 7.3 5.7 7.2 5.3 4.5 2.3 5.4 6.1 FASTEST WIND DIRECTION 100 110 120 310 360 290 30 300 330 120 150 90 100 FASTEST WIND SPEED (KNOTS) 41 39 29 39 35 25 35 27 31 25 23 27 41 DAY 6 8 3 21 3 3 27 13 7 7 20 13 DAYS WITH SKY CLEAR (0-2)/8 20 13 10 16 10 29 29 26 29 14 19 13 228 DAYS WITH P.CLOUDY (3-6)/8 7 11 12 12 16 1 2 5 1 7 6 10 90 DAYS WITH CLOUDY (7-8)/8 4 4 9 2 5 0 0 0 0 10 5 8 47 DAYS WITH VISIBILITY =< 2 KM 0 0 1 3 4 10 5 2 3 1 1 2 32 DURATION OF SUNSHINE HOURS 214.2 194.4 173.1 257.7 219.3 304.5 247.4 328.4 276.3 196.2 225.9 164.8 2802.2 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION DEHLORAN (40796) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 32 41 N LONGITUDE 47 16 E DATA PROCESSING CENTER ELEVATION 232.0 M MEANS AND EXTREMES FOR THE YEAR 1987 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL MEAN QFE PRESSURE IN HPA 996.2 992.4 988.2 988.3 983.3 978.0 975.0 975.9 981.5 988.3 992.0 994.6 986.1 MAX. QFE PRESSURE IN HPA 1001.7 998.9 993.8 996.6 990.4 982.5 980.7 980.8 988.6 994.5 998.0 1000.9 1001.7 DAY-HOUR 17- 6 1- 6 15- 6 22- 6 12- 6 1- 6 29-18 7- 6 30- 6 1-12 30- 6 2- 6 MIN. QFE PRESSURE IN HPA 985.0 984.6 978.4 981.5 977.9 972.6 969.5 971.7 975.4 980.2 985.8 985.4 969.5 DAY-HOUR 6-12 17-12 13-15 25-15 29-15 8-15 26-15 21-15 10-15 4-12 7- 9 23-18 MEAN QNH PRESSURE IN HPA 1023.7 1019.8 1015.5 1015.7 1010.5 1005.0 1002.0 1002.9 1008.7 1015.6 1019.4 1022.1 1013.4 MAX. QNH PRESSURE IN HPA 1029.3 1026.5 1021.2 1024.1 1017.8 1009.7 1007.8 1008.0 1015.9 1022.0 1025.5 1028.5 1029.3 DAY-HOUR 17- 6 1- 6 15- 6 22- 6 12- 6 1- 6 29-18 7- 6 30- 6 1-12 30- 6 2- 6 MIN. QNH PRESSURE IN HPA 1012.2 1011.8 1005.5 1008.7 1005.0 999.6 996.4 998.6 1002.4 1007.3 1013.1 1012.7 996.4 DAY-HOUR 6-12 17-12 13-15 25-15 29-15 8-15 26-15 21-15 10-15 4-12 7- 9 23-18 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** 999.8 1000.8 ****** ****** 1019.1 1022.4 ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** 1006.2 1005.7 ****** ****** 1025.4 1028.6 ****** DAY-HOUR **-** **-** **-** **-** **-** **-** 30- 6 7- 6 **-** **-** 30-18 2- 6 MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** 994.1 996.4 ****** ****** 1012.4 1012.3 ****** DAY-HOUR **-** **-** **-** **-** **-** **-** 26-15 13-15 **-** **-** 7- 3 23-18 PRESSURE AT HOUR 0000 UTC. MEAN QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** PRESSURE AT HOUR 0300 UTC. MEAN QFE PRESSURE IN HPA 996.1 992.5 988.0 988.4 983.2 978.1 974.9 975.9 981.4 988.0 991.8 994.6 986.1 MAX. QFE PRESSURE IN HPA 1000.1 997.9 991.6 995.0 988.3 981.6 979.5 980.1 986.9 992.5 995.3 999.6 1000.1 DAY 12 1 15 22 13 1 30 8 30 28 30 2 MIN. QFE PRESSURE IN HPA 987.2 985.1 982.0 982.1 979.0 974.4 969.9 973.2 976.9 981.2 986.2 987.8 969.9 DAY 6 17 13 19 30 9 27 14 10 4 7 24 MEAN QNH PRESSURE IN HPA 1023.6 1019.9 1015.3 1015.7 1010.4 1005.2 1001.9 1002.9 1008.6 1015.3 1019.2 1022.1 1013.3 MAX. QNH PRESSURE IN HPA 1027.7 1025.4 1019.0 1022.5 1015.6 1008.8 1006.6 1007.2 1014.2 1019.9 1022.8 1027.2 1027.7 DAY 12 1 15 22 13 1 30 8 30 28 30 2 MIN. QNH PRESSURE IN HPA 1014.5 1012.4 1009.2 1009.3 1006.1 1001.4 996.8 1000.2 1004.0 1008.4 1013.5 1015.1 996.8 DAY 6 17 13 19 30 9 27 14 10 4 7 24 MEAN QFF PRESSURE IN HPA 1023.8 1019.9 1015.2 1015.0 1008.8 1003.3 999.8 1000.9 1006.9 1014.4 1018.8 1022.3 1012.4 MAX. QFF PRESSURE IN HPA 1028.1 1025.4 1019.5 1022.2 1014.2 1007.0 1005.2 1004.9 1012.9 1019.7 1022.7 1027.2 1028.1 DAY 30 1 15 22 13 1 30 8 30 28 30 2 MIN. QFF PRESSURE IN HPA 1014.5 1011.8 1009.0 1008.0 1004.4 999.4 994.3 997.9 1002.0 1007.0 1012.4 1015.1 994.3 DAY 6 17 13 19 30 9 27 13 10 4 7 24 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION DEHLORAN (40796) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 32 41 N LONGITUDE 47 16 E DATA PROCESSING CENTER ELEVATION 232.0 M MEANS AND EXTREMES FOR THE YEAR 1987 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 0600 UTC. MEAN QFE PRESSURE IN HPA 997.4 993.7 989.2 989.6 984.4 978.9 975.8 976.9 982.7 989.1 993.0 995.7 987.2 MAX. QFE PRESSURE IN HPA 1001.7 998.9 993.8 996.6 990.4 982.5 980.6 980.8 988.6 994.0 998.0 1000.9 1001.7 DAY 17 1 15 22 12 1 30 7 30 31 30 2 MIN. QFE PRESSURE IN HPA 987.0 985.1 982.0 983.2 979.8 975.2 971.7 973.2 978.0 982.2 986.8 988.7 971.7 DAY 6 17 4 25 30 8 27 14 10 4 7 23 MEAN QNH PRESSURE IN HPA 1024.9 1021.1 1016.5 1016.9 1011.7 1006.0 1002.8 1004.0 1009.9 1016.4 1020.4 1023.2 1014.5 MAX. QNH PRESSURE IN HPA 1029.3 1026.5 1021.2 1024.1 1017.8 1009.7 1007.8 1008.0 1015.9 1021.4 1025.5 1028.5 1029.3 DAY 17 1 15 22 12 1 30 7 30 31 30 2 MIN. QNH PRESSURE IN HPA 1014.3 1012.4 1009.2 1010.4 1006.9 1002.2 998.6 1000.2 1005.1 1009.4 1014.1 1016.0 998.6 DAY 6 17 4 25 30 8 27 14 10 4 7 23 MEAN QFF PRESSURE IN HPA ****** ****** 1016.3 1016.0 1010.5 1004.2 1000.7 1001.9 1008.2 1015.5 1020.1 1023.4 ****** MAX. QFF PRESSURE IN HPA ****** ****** 1021.8 1023.6 1016.3 1006.6 1006.2 1005.7 1014.5 1021.0 1025.3 1028.6 ****** DAY ** ** 15 22 12 28 30 7 30 31 30 2 MIN. QFF PRESSURE IN HPA ****** ****** 1008.8 1009.0 1006.5 1001.9 996.3 997.9 1003.3 1007.8 1013.2 1015.7 ****** DAY ** ** 4 25 23 30 27 14 10 4 7 23 PRESSURE AT HOUR 0900 UTC. MEAN QFE PRESSURE IN HPA 996.9 993.4 989.0 989.2 984.0 978.6 975.7 976.7 982.2 989.1 992.6 995.2 986.9 MAX. QFE PRESSURE IN HPA 1001.4 998.5 993.8 995.2 990.1 982.3 980.4 980.2 988.0 993.5 997.7 1000.0 1001.4 DAY 28 6 15 22 12 1 30 7 30 28 30 2 MIN. QFE PRESSURE IN HPA 986.0 985.6 980.5 983.4 979.9 974.6 971.1 973.6 977.3 982.1 985.8 987.5 971.1 DAY 6 17 4 4 30 8 27 14 10 4 7 23 MEAN QNH PRESSURE IN HPA 1024.4 1020.9 1016.4 1016.5 1011.2 1005.7 1002.7 1003.7 1009.4 1016.4 1020.0 1022.7 1014.2 MAX. QNH PRESSURE IN HPA 1029.0 1026.1 1021.2 1022.7 1017.5 1009.5 1007.5 1007.3 1015.3 1020.9 1025.2 1027.6 1029.0 DAY 28 6 15 22 12 1 30 7 30 28 30 2 MIN. QNH PRESSURE IN HPA 1013.3 1012.9 1007.6 1010.6 1007.0 1001.6 998.0 1000.6 1004.4 1009.3 1013.1 1014.8 998.0 DAY 6 17 4 4 30 8 27 14 10 4 7 23 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** PRESSURE AT HOUR 1200 UTC. MEAN QFE PRESSURE IN HPA 995.2 991.5 987.6 987.6 982.8 977.4 974.5 975.3 980.9 987.8 991.3 993.8 985.5 MAX. QFE PRESSURE IN HPA 999.5 997.2 991.0 993.2 988.3 981.1 979.4 978.8 986.6 994.5 996.7 998.5 999.5 DAY 12 11 7 22 12 1 29 7 30 1 30 1 MIN. QFE PRESSURE IN HPA 985.0 984.6 980.0 982.0 978.3 973.3 970.0 972.3 976.0 980.2 986.6 985.9 970.0 DAY 6 17 13 4 29 8 26 24 11 4 25 23 MEAN QNH PRESSURE IN HPA 1022.7 1018.9 1014.9 1014.9 1010.0 1004.5 1001.5 1002.3 1008.0 1015.1 1018.7 1021.2 1012.7 MAX. QNH PRESSURE IN HPA 1027.1 1024.7 1018.4 1020.6 1015.6 1008.3 1006.5 1005.9 1013.9 1022.0 1024.2 1026.1 1027.1 DAY 12 11 7 22 12 1 29 7 30 1 30 1 MIN. QNH PRESSURE IN HPA 1012.2 1011.8 1007.1 1009.2 1005.4 1000.3 996.9 999.3 1003.0 1007.3 1013.9 1013.2 996.9 DAY 6 17 13 4 29 8 26 24 11 4 25 23 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION DEHLORAN (40796) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 32 41 N LONGITUDE 47 16 E DATA PROCESSING CENTER ELEVATION 232.0 M MEANS AND EXTREMES FOR THE YEAR 1987 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 1500 UTC. MEAN QFE PRESSURE IN HPA 995.5 991.4 987.4 987.1 982.2 976.9 974.0 974.7 980.6 987.7 991.6 994.1 985.3 MAX. QFE PRESSURE IN HPA 1000.0 997.2 991.0 993.0 987.5 980.3 980.1 978.1 986.8 993.5 996.9 999.0 1000.0 DAY 12 11 31 7 12 3 29 31 30 1 30 1 MIN. QFE PRESSURE IN HPA 985.6 985.5 978.4 981.5 977.9 972.6 969.5 971.7 975.4 980.7 986.8 985.8 969.5 DAY 6 28 13 25 29 8 26 21 10 4 6 23 MEAN QNH PRESSURE IN HPA 1023.0 1018.8 1014.7 1014.4 1009.4 1003.9 1001.0 1001.8 1007.7 1015.0 1019.0 1021.6 1012.5 MAX. QNH PRESSURE IN HPA 1027.6 1024.7 1018.4 1020.4 1014.8 1007.4 1007.2 1005.2 1014.1 1020.9 1024.4 1026.6 1027.6 DAY 12 11 31 7 12 3 29 31 30 1 30 1 MIN. QNH PRESSURE IN HPA 1012.9 1012.8 1005.5 1008.7 1005.0 999.6 996.4 998.6 1002.4 1007.8 1014.1 1013.1 996.4 DAY 6 28 13 25 29 8 26 21 10 4 6 23 MEAN QFF PRESSURE IN HPA 1023.3 1018.8 1014.6 1013.5 1007.8 1002.0 998.9 999.7 1006.2 1014.2 1018.6 1021.8 1011.6 MAX. QFF PRESSURE IN HPA 1028.0 1025.1 1018.4 1020.3 1013.2 1005.4 1005.6 1003.6 1012.7 1019.6 1024.3 1026.6 1028.0 DAY 12 11 31 7 12 1 29 31 30 1 30 7 MIN. QFF PRESSURE IN HPA 1012.8 1012.4 1005.3 1007.1 1003.2 997.8 994.1 996.4 1000.3 1006.5 1013.2 1012.8 994.1 DAY 6 28 13 25 29 8 26 13 10 4 6 23 PRESSURE AT HOUR 1800 UTC. MEAN QFE PRESSURE IN HPA ****** ****** 988.1 988.2 983.4 977.9 975.0 975.7 981.4 988.3 992.0 994.6 ****** MAX. QFE PRESSURE IN HPA ****** ****** 991.8 994.3 988.3 980.0 980.7 979.1 987.6 994.4 998.0 999.0 ****** DAY ** ** 23 7 12 28 29 7 30 1 30 1 MIN. QFE PRESSURE IN HPA ****** ****** 980.6 983.0 979.5 974.6 970.5 972.5 976.2 981.6 986.8 985.4 ****** DAY ** ** 13 25 21 30 26 13 10 3 6 23 MEAN QNH PRESSURE IN HPA ****** ****** 1015.4 1015.6 1010.6 1004.9 1002.0 1002.8 1008.5 1015.6 1019.4 1022.0 ****** MAX. QNH PRESSURE IN HPA ****** ****** 1019.2 1021.8 1015.6 1007.1 1007.8 1006.2 1014.9 1021.9 1025.5 1026.6 ****** DAY ** ** 23 7 12 28 29 7 30 1 30 1 MIN. QNH PRESSURE IN HPA ****** ****** 1007.8 1010.2 1006.6 1001.6 997.4 999.5 1003.2 1008.8 1014.1 1012.7 ****** DAY ** ** 13 25 21 30 26 13 10 3 6 23 MEAN QFF PRESSURE IN HPA ****** ****** 1015.3 1014.6 1008.9 1002.9 999.8 1000.7 1006.9 1014.6 1019.1 1022.2 ****** MAX. QFF PRESSURE IN HPA ****** ****** 1019.2 1021.4 1014.3 1004.9 1006.0 1004.4 1013.4 1020.3 1025.4 1026.7 ****** DAY ** ** 23 7 12 28 29 31 30 1 30 1 MIN. QFF PRESSURE IN HPA ****** ****** 1007.5 1008.9 1004.8 999.4 995.0 997.1 1001.3 1007.0 1013.2 1012.3 ****** DAY ** ** 13 25 21 30 26 13 10 3 6 23 PRESSURE AT HOUR 2100 UTC. MEAN QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION DEHLORAN (40796) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 32 41 N LONGITUDE 47 16 E DATA PROCESSING CENTER ELEVATION 232.0 M MEANS AND EXTREMES FOR THE YEAR 1988 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AIR TEMPERATURE (C) ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** MINIMUN AIR TEMPERATURE (C) ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** DAYS WITH MINIMUM TEMP. >=21 **** **** **** **** **** **** **** **** **** **** **** **** **** DAYS WITH MINIMUM TEMP. <=-4 **** **** **** **** **** **** **** **** **** **** **** **** **** DAYS WITH FREEZING MIN.<= 0 **** **** **** **** **** **** **** **** **** **** **** **** **** TEMPERATURE RECORDS LOWEST(C) ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** DAY ** ** ** ** ** ** ** ** ** ** ** ** MAXIMUM AIR TEMPERATURE (C) ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** DAYS WITH MAXIMUM TEMP. >=30 **** **** **** **** **** **** **** **** **** **** **** **** **** DAYS WITH MAXIMUM TEMP. <= 0 **** **** **** **** **** **** **** **** **** **** **** **** **** TEMPERATURE RECORDS HIGHEST(C)***** ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** DAY ** ** ** ** ** ** ** ** ** ** ** ** DIF. BETWEEN (MAX.-MIN.) (C) ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** MEAN DAILY TEMP. (MDT) (C) ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** COOLING DEG. DAYS(BASE 21 0C)****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** HEATING DEG. DAYS(BASE 18 0C)****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DEWPOINT (MEAN C) ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** MIXING RATIO (G/KG) ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** VAPOUR PRESSURE (HPA) ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** SATURATION DEF. (HPA) ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** RELATIVE HUMIDITY (MEAN %) *** *** *** *** *** *** *** *** *** *** *** *** *** RELATIVE HUMIDITY (MAX. %) *** *** *** *** *** *** *** *** *** *** *** *** *** RELATIVE HUMIDITY (MIN. %) *** *** *** *** *** *** *** *** *** *** *** *** *** RELATIVE HUMIDITY (MEAN% 03UTC) *** *** *** *** *** *** *** *** *** *** *** *** *** RELATIVE HUMIDITY (MEAN% 09UTC) *** *** *** *** *** *** *** *** *** *** *** *** *** RELATIVE HUMIDITY (MEAN% 15UTC) *** *** *** *** *** *** *** *** *** *** *** *** *** RH=0 => RELATIVE HUMIDITY < 0.5% AMOUNT OF PRECIPITATION MM. ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAYS WITH PRECIPITATION >=10 **** **** **** **** **** **** **** **** **** **** **** **** **** DAYS WITH PRECIPITATION >= 5 **** **** **** **** **** **** **** **** **** **** **** **** **** DAYS WITH PRECIPITATION >= 1 **** **** **** **** **** **** **** **** **** **** **** **** **** DAYS WITH PRECIPITATION **** **** **** **** **** **** **** **** **** **** **** **** **** GREATEST DAILY PRECIPITATION ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** DAY WITH THUNDER STORM **** **** **** **** **** **** **** **** **** **** **** **** **** DAYS WITH SNOW OR SLEET **** **** **** **** **** **** **** **** **** **** **** **** **** DAYS WITH DUST **** **** **** **** **** **** **** **** **** **** **** **** **** WIND DIRECTION (PREVAILING) *** *** *** *** *** *** *** *** *** *** *** *** *** PREVAILING WIND SPEED(KNOTS) **** **** **** **** **** **** **** **** **** **** **** **** **** PREVAILING WIND PERCENT ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** CALMS PERCENT OF WIND ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** NO. OF WIND OBSERVATION **** **** **** **** **** **** **** **** **** **** **** **** 0 VECTOR WIND DIRECTION (MEAN) *** *** *** *** *** *** *** *** *** *** *** *** *** VECTOR WIND MAGNITUDE(KNOTS) **** **** **** **** **** **** **** **** **** **** **** **** **** WIND STEADINESES (MEAN %) ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** WIND SPEED (MEAN KNOTS) **** **** **** **** **** **** **** **** **** **** **** **** **** FASTEST WIND DIRECTION *** *** *** *** *** *** *** *** *** *** *** *** *** FASTEST WIND SPEED (KNOTS) *** *** *** *** *** *** *** *** *** *** *** *** *** DAY ** ** ** ** ** ** ** ** ** ** ** ** DAYS WITH SKY CLEAR (0-2)/8 **** **** **** **** **** **** **** **** **** **** **** **** **** DAYS WITH P.CLOUDY (3-6)/8 **** **** **** **** **** **** **** **** **** **** **** **** **** DAYS WITH CLOUDY (7-8)/8 **** **** **** **** **** **** **** **** **** **** **** **** **** DAYS WITH VISIBILITY =< 2 KM **** **** **** **** **** **** **** **** **** **** **** **** **** DURATION OF SUNSHINE HOURS ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION DEHLORAN (40796) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 32 41 N LONGITUDE 47 16 E DATA PROCESSING CENTER ELEVATION 232.0 M MEANS AND EXTREMES FOR THE YEAR 1988 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL MEAN QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY-HOUR **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** MIN. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY-HOUR **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** MEAN QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY-HOUR **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** MIN. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY-HOUR **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY-HOUR **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY-HOUR **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** PRESSURE AT HOUR 0000 UTC. MEAN QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** PRESSURE AT HOUR 0300 UTC. MEAN QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION DEHLORAN (40796) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 32 41 N LONGITUDE 47 16 E DATA PROCESSING CENTER ELEVATION 232.0 M MEANS AND EXTREMES FOR THE YEAR 1988 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 0600 UTC. MEAN QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** PRESSURE AT HOUR 0900 UTC. MEAN QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** PRESSURE AT HOUR 1200 UTC. MEAN QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION DEHLORAN (40796) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 32 41 N LONGITUDE 47 16 E DATA PROCESSING CENTER ELEVATION 232.0 M MEANS AND EXTREMES FOR THE YEAR 1988 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 1500 UTC. MEAN QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** PRESSURE AT HOUR 1800 UTC. MEAN QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** PRESSURE AT HOUR 2100 UTC. MEAN QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION DEHLORAN (40796) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 32 41 N LONGITUDE 47 16 E DATA PROCESSING CENTER ELEVATION 232.0 M MEANS AND EXTREMES FOR THE YEAR 1989 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AIR TEMPERATURE (C) ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** MINIMUN AIR TEMPERATURE (C) ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** DAYS WITH MINIMUM TEMP. >=21 **** **** **** **** **** **** **** **** **** **** **** **** **** DAYS WITH MINIMUM TEMP. <=-4 **** **** **** **** **** **** **** **** **** **** **** **** **** DAYS WITH FREEZING MIN.<= 0 **** **** **** **** **** **** **** **** **** **** **** **** **** TEMPERATURE RECORDS LOWEST(C) ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** DAY ** ** ** ** ** ** ** ** ** ** ** ** MAXIMUM AIR TEMPERATURE (C) ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** DAYS WITH MAXIMUM TEMP. >=30 **** **** **** **** **** **** **** **** **** **** **** **** **** DAYS WITH MAXIMUM TEMP. <= 0 **** **** **** **** **** **** **** **** **** **** **** **** **** TEMPERATURE RECORDS HIGHEST(C)***** ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** DAY ** ** ** ** ** ** ** ** ** ** ** ** DIF. BETWEEN (MAX.-MIN.) (C) ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** MEAN DAILY TEMP. (MDT) (C) ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** COOLING DEG. DAYS(BASE 21 0C)****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** HEATING DEG. DAYS(BASE 18 0C)****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DEWPOINT (MEAN C) ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** MIXING RATIO (G/KG) ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** VAPOUR PRESSURE (HPA) ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** SATURATION DEF. (HPA) ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** RELATIVE HUMIDITY (MEAN %) *** *** *** *** *** *** *** *** *** *** *** *** *** RELATIVE HUMIDITY (MAX. %) *** *** *** *** *** *** *** *** *** *** *** *** *** RELATIVE HUMIDITY (MIN. %) *** *** *** *** *** *** *** *** *** *** *** *** *** RELATIVE HUMIDITY (MEAN% 03UTC) *** *** *** *** *** *** *** *** *** *** *** *** *** RELATIVE HUMIDITY (MEAN% 09UTC) *** *** *** *** *** *** *** *** *** *** *** *** *** RELATIVE HUMIDITY (MEAN% 15UTC) *** *** *** *** *** *** *** *** *** *** *** *** *** RH=0 => RELATIVE HUMIDITY < 0.5% AMOUNT OF PRECIPITATION MM. ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAYS WITH PRECIPITATION >=10 **** **** **** **** **** **** **** **** **** **** **** **** **** DAYS WITH PRECIPITATION >= 5 **** **** **** **** **** **** **** **** **** **** **** **** **** DAYS WITH PRECIPITATION >= 1 **** **** **** **** **** **** **** **** **** **** **** **** **** DAYS WITH PRECIPITATION **** **** **** **** **** **** **** **** **** **** **** **** **** GREATEST DAILY PRECIPITATION ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** DAY WITH THUNDER STORM **** **** **** **** **** **** **** **** **** **** **** **** **** DAYS WITH SNOW OR SLEET **** **** **** **** **** **** **** **** **** **** **** **** **** DAYS WITH DUST **** **** **** **** **** **** **** **** **** **** **** **** **** WIND DIRECTION (PREVAILING) *** *** *** *** *** *** *** *** *** *** *** *** *** PREVAILING WIND SPEED(KNOTS) **** **** **** **** **** **** **** **** **** **** **** **** **** PREVAILING WIND PERCENT ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** CALMS PERCENT OF WIND ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** NO. OF WIND OBSERVATION **** **** **** **** **** **** **** **** **** **** **** **** 0 VECTOR WIND DIRECTION (MEAN) *** *** *** *** *** *** *** *** *** *** *** *** *** VECTOR WIND MAGNITUDE(KNOTS) **** **** **** **** **** **** **** **** **** **** **** **** **** WIND STEADINESES (MEAN %) ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** WIND SPEED (MEAN KNOTS) **** **** **** **** **** **** **** **** **** **** **** **** **** FASTEST WIND DIRECTION *** *** *** *** *** *** *** *** *** *** *** *** *** FASTEST WIND SPEED (KNOTS) *** *** *** *** *** *** *** *** *** *** *** *** *** DAY ** ** ** ** ** ** ** ** ** ** ** ** DAYS WITH SKY CLEAR (0-2)/8 **** **** **** **** **** **** **** **** **** **** **** **** **** DAYS WITH P.CLOUDY (3-6)/8 **** **** **** **** **** **** **** **** **** **** **** **** **** DAYS WITH CLOUDY (7-8)/8 **** **** **** **** **** **** **** **** **** **** **** **** **** DAYS WITH VISIBILITY =< 2 KM **** **** **** **** **** **** **** **** **** **** **** **** **** DURATION OF SUNSHINE HOURS ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION DEHLORAN (40796) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 32 41 N LONGITUDE 47 16 E DATA PROCESSING CENTER ELEVATION 232.0 M MEANS AND EXTREMES FOR THE YEAR 1989 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL MEAN QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY-HOUR **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** MIN. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY-HOUR **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** MEAN QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY-HOUR **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** MIN. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY-HOUR **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY-HOUR **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY-HOUR **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** PRESSURE AT HOUR 0000 UTC. MEAN QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** PRESSURE AT HOUR 0300 UTC. MEAN QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION DEHLORAN (40796) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 32 41 N LONGITUDE 47 16 E DATA PROCESSING CENTER ELEVATION 232.0 M MEANS AND EXTREMES FOR THE YEAR 1989 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 0600 UTC. MEAN QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** PRESSURE AT HOUR 0900 UTC. MEAN QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** PRESSURE AT HOUR 1200 UTC. MEAN QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION DEHLORAN (40796) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 32 41 N LONGITUDE 47 16 E DATA PROCESSING CENTER ELEVATION 232.0 M MEANS AND EXTREMES FOR THE YEAR 1989 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 1500 UTC. MEAN QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** PRESSURE AT HOUR 1800 UTC. MEAN QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** PRESSURE AT HOUR 2100 UTC. MEAN QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION DEHLORAN (40796) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 32 41 N LONGITUDE 47 16 E DATA PROCESSING CENTER ELEVATION 232.0 M MEANS AND EXTREMES FOR THE YEAR 1990 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AIR TEMPERATURE (C) ***** ***** ***** ***** ***** 38.7 41.2 39.4 36.5 29.7 22.9 16.6 ***** MINIMUN AIR TEMPERATURE (C) ***** ***** ***** ***** ***** 28.2 31.6 28.8 25.8 21.0 15.6 10.3 ***** DAYS WITH MINIMUM TEMP. >=21 **** **** **** **** **** 30 31 31 30 19 2 0 **** DAYS WITH MINIMUM TEMP. <=-4 **** **** **** **** **** 0 0 0 0 0 0 0 **** DAYS WITH FREEZING MIN.<= 0 **** **** **** **** **** 0 0 0 0 0 0 0 **** TEMPERATURE RECORDS LOWEST(C) ***** ***** ***** ***** ***** 23.8 27.0 25.8 21.0 16.4 10.0 2.0 ***** DAY ** ** ** ** ** 21 3 9 23 30 13 26 MAXIMUM AIR TEMPERATURE (C) ***** ***** ***** ***** ***** 44.1 46.7 45.7 42.6 34.8 27.9 21.2 ***** DAYS WITH MAXIMUM TEMP. >=30 **** **** **** **** **** 30 31 31 30 30 9 0 **** DAYS WITH MAXIMUM TEMP. <= 0 **** **** **** **** **** 0 0 0 0 0 0 0 **** TEMPERATURE RECORDS HIGHEST(C)***** ***** ***** ***** ***** 46.6 50.6 49.6 45.0 40.0 32.6 27.0 ***** DAY ** ** ** ** ** 5 25 14 5 8 4 4 DIF. BETWEEN (MAX.-MIN.) (C) ***** ***** ***** ***** ***** 15.9 15.1 16.9 16.8 13.8 12.3 10.9 ***** MEAN DAILY TEMP. (MDT) (C) ***** ***** ***** ***** ***** 36.2 39.1 37.2 34.2 27.9 21.8 15.7 ***** COOLING DEG. DAYS(BASE 21 0C)****** ****** ****** ****** ****** 455.2 561.4 503.6 396.3 215.0 47.3 2.4 ****** HEATING DEG. DAYS(BASE 18 0C)****** ****** ****** ****** ****** 0.0 0.0 0.0 0.0 0.0 4.1 96.0 ****** DEWPOINT (MEAN C) ***** ***** ***** ***** ***** 3.4 6.5 6.4 4.1 0.6 5.0 3.1 ***** MIXING RATIO (G/KG) ****** ****** ****** ****** ****** 5.37 6.51 6.45 6.24 4.37 5.76 5.03 ****** VAPOUR PRESSURE (HPA) ****** ****** ****** ****** ****** 8.34 10.07 10.00 9.68 6.89 9.09 7.96 ****** SATURATION DEF. (HPA) ****** ****** ****** ****** ****** 62.68 71.16 64.17 53.41 36.06 19.87 12.02 ****** RELATIVE HUMIDITY (MEAN %) *** *** *** *** *** 12 13 14 16 18 34 43 *** RELATIVE HUMIDITY (MAX. %) *** *** *** *** *** 17 19 18 22 25 46 58 *** RELATIVE HUMIDITY (MIN. %) *** *** *** *** *** 9 10 11 11 12 25 30 *** RELATIVE HUMIDITY (MEAN% 03UTC) *** *** *** *** *** 16 19 18 21 25 45 56 *** RELATIVE HUMIDITY (MEAN% 09UTC) *** *** *** *** *** 11 12 13 15 15 28 38 *** RELATIVE HUMIDITY (MEAN% 15UTC) *** *** *** *** *** 11 11 12 15 16 33 38 *** RH=0 => RELATIVE HUMIDITY < 0.5% AMOUNT OF PRECIPITATION MM. ****** ****** ****** ****** ****** 0.0 0.0 0.0 0.0 0.0 17.3 8.5 ****** DAYS WITH PRECIPITATION >=10 **** **** **** **** **** 0 0 0 0 0 1 0 **** DAYS WITH PRECIPITATION >= 5 **** **** **** **** **** 0 0 0 0 0 1 1 **** DAYS WITH PRECIPITATION >= 1 **** **** **** **** **** 0 0 0 0 0 3 1 **** DAYS WITH PRECIPITATION **** **** **** **** **** 0 0 0 0 1 3 2 **** GREATEST DAILY PRECIPITATION ****** ****** ****** ****** ****** 0.0 0.0 0.0 0.0 0.0 12.3 8.0 ****** DAY ** ** ** ** ** ** ** ** ** ** 12 25 DAY WITH THUNDER STORM **** **** **** **** **** 0 0 0 0 0 1 0 **** DAYS WITH SNOW OR SLEET **** **** **** **** **** 0 0 0 0 0 0 0 **** DAYS WITH DUST **** **** **** **** **** 18 18 14 11 16 6 1 **** WIND DIRECTION (PREVAILING) *** *** *** *** *** 270 270 270 270 270 90 270 *** PREVAILING WIND SPEED(KNOTS) **** **** **** **** **** 15.7 18.1 18.0 17.8 11.8 13.5 6.6 **** PREVAILING WIND PERCENT ***** ***** ***** ***** ***** 28.0 25.2 26.5 26.7 16.1 7.3 10.3 ***** CALMS PERCENT OF WIND ***** ***** ***** ***** ***** 32.7 44.5 53.5 50.0 49.0 72.7 68.4 ***** NO. OF WIND OBSERVATION **** **** **** **** **** 150 155 155 150 155 150 155 1070 VECTOR WIND DIRECTION (MEAN) *** *** *** *** *** 260 253 262 266 246 129 137 *** VECTOR WIND MAGNITUDE(KNOTS) **** **** **** **** **** 5.1 4.1 4.7 5.6 1.1 0.9 1.0 **** WIND STEADINESES (MEAN %) ***** ***** ***** ***** ***** 63.0 56.2 75.8 76.7 22.9 30.0 38.5 ***** WIND SPEED (MEAN KNOTS) **** **** **** **** **** 8.1 7.3 6.2 7.3 4.8 3.0 2.6 **** FASTEST WIND DIRECTION *** *** *** *** *** 280 280 280 270 270 110 270 *** FASTEST WIND SPEED (KNOTS) *** *** *** *** *** 39 35 29 31 25 23 19 *** DAY ** ** ** ** ** 22 11 20 9 1 11 15 DAYS WITH SKY CLEAR (0-2)/8 **** **** **** **** **** 30 30 31 30 20 18 19 **** DAYS WITH P.CLOUDY (3-6)/8 **** **** **** **** **** 0 1 0 0 11 10 11 **** DAYS WITH CLOUDY (7-8)/8 **** **** **** **** **** 0 0 0 0 0 2 1 **** DAYS WITH VISIBILITY =< 2 KM **** **** **** **** **** 2 7 1 0 0 0 0 **** DURATION OF SUNSHINE HOURS ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION DEHLORAN (40796) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 32 41 N LONGITUDE 47 16 E DATA PROCESSING CENTER ELEVATION 232.0 M MEANS AND EXTREMES FOR THE YEAR 1990 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL MEAN QFE PRESSURE IN HPA ****** ****** ****** ****** ****** 976.6 972.6 975.0 979.5 987.7 991.8 993.1 ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** 984.0 979.2 979.1 985.4 995.3 998.8 1000.5 ****** DAY-HOUR **-** **-** **-** **-** **-** 4- 6 15- 6 16- 6 27- 6 30- 6 14- 6 28- 6 MIN. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** 969.6 968.5 970.2 974.1 981.4 983.4 986.8 ****** DAY-HOUR **-** **-** **-** **-** **-** 30-15 5-15 14-15 4-15 1-12 1-12 10-12 MEAN QNH PRESSURE IN HPA ****** ****** ****** ****** ****** 1003.6 999.5 1002.0 1006.6 1015.0 1019.2 1020.5 ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** 1011.2 1006.3 1006.2 1012.7 1022.8 1026.4 1028.1 ****** DAY-HOUR **-** **-** **-** **-** **-** 4- 6 15- 6 16- 6 27- 6 30- 6 14- 6 28- 6 MIN. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** 996.5 995.4 997.1 1001.1 1008.6 1010.6 1014.1 ****** DAY-HOUR **-** **-** **-** **-** **-** 30-15 5-15 14-15 4-15 1-12 1-12 10-12 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY-HOUR **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY-HOUR **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** PRESSURE AT HOUR 0000 UTC. MEAN QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** PRESSURE AT HOUR 0300 UTC. MEAN QFE PRESSURE IN HPA ****** ****** ****** ****** ****** 976.6 972.7 975.1 979.4 987.6 991.8 993.1 ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** 982.4 978.5 977.7 983.9 994.0 997.8 998.7 ****** DAY ** ** ** ** ** 5 15 4 27 30 14 28 MIN. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** 971.6 969.7 970.9 975.4 982.6 984.6 988.2 ****** DAY ** ** ** ** ** 25 5 14 4 1 2 10 MEAN QNH PRESSURE IN HPA ****** ****** ****** ****** ****** 1003.7 999.7 1002.1 1006.5 1014.9 1019.2 1020.6 ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** 1009.6 1005.6 1004.8 1011.1 1021.4 1025.3 1026.3 ****** DAY ** ** ** ** ** 5 15 4 27 30 14 28 MIN. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** 998.5 996.6 997.8 1002.4 1009.8 1011.8 1015.5 ****** DAY ** ** ** ** ** 25 5 14 4 1 2 10 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** 1001.8 997.6 1000.2 1004.9 1013.8 1018.7 1020.7 ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** 1007.8 1003.5 1002.7 1009.6 1020.8 1025.3 1027.2 ****** DAY ** ** ** ** ** 5 15 4 27 30 14 28 MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** 996.5 994.8 995.6 1000.7 1008.3 1011.1 1015.3 ****** DAY ** ** ** ** ** 25 5 14 4 1 2 10 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION DEHLORAN (40796) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 32 41 N LONGITUDE 47 16 E DATA PROCESSING CENTER ELEVATION 232.0 M MEANS AND EXTREMES FOR THE YEAR 1990 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 0600 UTC. MEAN QFE PRESSURE IN HPA ****** ****** ****** ****** ****** 977.6 973.6 976.0 980.6 988.9 993.1 994.4 ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** 984.0 979.2 979.1 985.4 995.3 998.8 1000.5 ****** DAY ** ** ** ** ** 4 15 16 27 30 14 28 MIN. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** 972.7 970.4 971.8 976.6 984.1 986.6 989.4 ****** DAY ** ** ** ** ** 25 5 14 5 1 2 10 MEAN QNH PRESSURE IN HPA ****** ****** ****** ****** ****** 1004.7 1000.6 1003.1 1007.7 1016.2 1020.5 1021.9 ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** 1011.2 1006.3 1006.2 1012.7 1022.8 1026.4 1028.1 ****** DAY ** ** ** ** ** 4 15 16 27 30 14 28 MIN. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** 999.7 997.3 998.7 1003.7 1011.3 1013.9 1016.7 ****** DAY ** ** ** ** ** 25 5 14 5 1 2 10 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** PRESSURE AT HOUR 0900 UTC. MEAN QFE PRESSURE IN HPA ****** ****** ****** ****** ****** 977.3 973.2 975.7 980.3 988.4 992.3 993.4 ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** 983.4 979.2 978.5 985.0 994.1 998.4 998.9 ****** DAY ** ** ** ** ** 4 15 16 27 30 14 28 MIN. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** 972.0 970.1 971.6 976.3 983.4 986.0 988.1 ****** DAY ** ** ** ** ** 30 5 14 5 1 1 10 MEAN QNH PRESSURE IN HPA ****** ****** ****** ****** ****** 1004.3 1000.2 1002.7 1007.4 1015.7 1019.7 1020.8 ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** 1010.6 1006.3 1005.6 1012.2 1021.6 1026.0 1026.5 ****** DAY ** ** ** ** ** 4 15 16 27 30 14 28 MIN. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** 999.0 997.0 998.5 1003.3 1010.6 1013.3 1015.4 ****** DAY ** ** ** ** ** 30 5 14 5 1 1 10 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** PRESSURE AT HOUR 1200 UTC. MEAN QFE PRESSURE IN HPA ****** ****** ****** ****** ****** 975.9 972.0 974.5 978.7 987.0 990.8 992.0 ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** 983.0 978.0 976.9 982.9 992.8 997.1 998.0 ****** DAY ** ** ** ** ** 4 15 11 22 30 14 28 MIN. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** 970.8 969.0 970.8 974.5 981.4 983.4 986.8 ****** DAY ** ** ** ** ** 30 5 14 4 1 1 10 MEAN QNH PRESSURE IN HPA ****** ****** ****** ****** ****** 1003.0 998.9 1001.5 1005.8 1014.3 1018.2 1019.4 ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** 1010.2 1005.1 1004.0 1010.1 1020.2 1024.6 1025.5 ****** DAY ** ** ** ** ** 4 15 11 22 30 14 28 MIN. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** 997.7 995.9 997.7 1001.5 1008.6 1010.6 1014.1 ****** DAY ** ** ** ** ** 30 5 14 4 1 1 10 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION DEHLORAN (40796) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 32 41 N LONGITUDE 47 16 E DATA PROCESSING CENTER ELEVATION 232.0 M MEANS AND EXTREMES FOR THE YEAR 1990 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 1500 UTC. MEAN QFE PRESSURE IN HPA ****** ****** ****** ****** ****** 975.5 971.4 973.9 978.4 986.9 991.2 992.4 ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** 982.5 977.3 976.2 982.5 993.0 997.5 999.0 ****** DAY ** ** ** ** ** 4 15 4 22 30 14 28 MIN. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** 969.6 968.5 970.2 974.1 982.8 983.6 987.6 ****** DAY ** ** ** ** ** 30 5 14 4 1 1 9 MEAN QNH PRESSURE IN HPA ****** ****** ****** ****** ****** 1002.5 998.4 1000.9 1005.5 1014.2 1018.6 1019.8 ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** 1009.7 1004.4 1003.2 1009.7 1020.4 1025.0 1026.6 ****** DAY ** ** ** ** ** 4 15 4 22 30 14 28 MIN. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** 996.5 995.4 997.1 1001.1 1010.0 1010.8 1014.9 ****** DAY ** ** ** ** ** 30 5 14 4 1 1 9 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** 1000.7 996.2 999.0 1003.8 1013.2 1018.2 1020.0 ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** 1008.0 1002.2 1001.4 1008.2 1019.9 1025.0 1027.5 ****** DAY ** ** ** ** ** 4 15 11 22 30 14 28 MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** 994.5 993.4 994.9 999.3 1008.7 1010.1 1014.6 ****** DAY ** ** ** ** ** 30 12 14 4 1 1 9 PRESSURE AT HOUR 1800 UTC. MEAN QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** PRESSURE AT HOUR 2100 UTC. MEAN QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION DEHLORAN (40796) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 32 41 N LONGITUDE 47 16 E DATA PROCESSING CENTER ELEVATION 232.0 M MEANS AND EXTREMES FOR THE YEAR 1991 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AIR TEMPERATURE (C) 12.1 12.9 17.9 27.9 31.3 38.8 40.0 38.6 35.6 28.6 22.0 13.4 26.6 MINIMUN AIR TEMPERATURE (C) 7.9 7.9 11.7 19.3 23.0 28.4 29.9 29.8 26.4 21.0 14.4 7.7 18.9 DAYS WITH MINIMUM TEMP. >=21 0 0 0 9 23 29 31 31 30 16 3 0 172 DAYS WITH MINIMUM TEMP. <=-4 0 0 0 0 0 0 0 0 0 0 0 0 0 DAYS WITH FREEZING MIN.<= 0 0 0 0 0 0 0 0 0 0 0 0 0 0 TEMPERATURE RECORDS LOWEST(C) 1.0 1.0 4.0 12.0 17.5 20.4 24.5 26.0 23.0 16.5 10.0 1.4 1.0 DAY 7 10 11 7 4 13 31 30 4 1 27 19 MAXIMUM AIR TEMPERATURE (C) 15.6 16.8 22.0 33.0 36.1 43.7 46.2 44.6 41.3 33.3 26.3 17.1 31.3 DAYS WITH MAXIMUM TEMP. >=30 0 0 1 21 30 30 31 31 30 26 3 0 203 DAYS WITH MAXIMUM TEMP. <= 0 0 0 0 0 0 0 0 0 0 0 0 0 0 TEMPERATURE RECORDS HIGHEST(C) 19.2 23.6 30.0 42.0 40.5 47.7 49.6 48.6 43.8 38.8 33.2 22.8 49.6 DAY 31 24 31 27 9 19 21 9 1 12 2 8 DIF. BETWEEN (MAX.-MIN.) (C) 7.7 8.9 10.3 13.7 13.1 15.3 16.3 14.8 14.9 12.3 11.9 9.4 12.4 MEAN DAILY TEMP. (MDT) (C) 11.8 12.3 16.9 26.1 29.6 36.1 38.0 37.2 33.9 27.2 20.3 12.4 25.1 COOLING DEG. DAYS(BASE 21 0C) 0.0 0.0 4.7 154.0 265.6 452.6 527.6 501.3 386.6 191.8 24.8 0.0 2509.3 HEATING DEG. DAYS(BASE 18 0C) 193.7 158.9 64.9 0.0 0.0 0.0 0.0 0.0 0.0 0.0 3.2 176.0 596.7 DEWPOINT (MEAN C) 5.1 2.3 7.1 3.4 3.4 13.4 7.7 5.4 2.8 10.3 5.9 8.5 6.3 MIXING RATIO (G/KG) 5.73 5.00 6.72 5.26 5.26 11.88 7.06 6.02 5.22 8.49 6.86 7.27 6.73 VAPOUR PRESSURE (HPA) 9.06 7.90 10.53 8.27 8.23 18.15 10.90 9.33 8.16 13.29 10.75 11.45 10.50 SATURATION DEF. (HPA) 5.38 7.50 10.93 31.24 38.90 53.13 65.40 61.43 51.84 27.27 16.49 4.31 31.15 RELATIVE HUMIDITY (MEAN %) 65 53 53 25 18 26 15 14 15 36 39 74 36 RELATIVE HUMIDITY (MAX. %) 81 73 78 38 26 36 23 23 22 48 53 86 49 RELATIVE HUMIDITY (MIN. %) 50 34 35 15 13 21 10 9 9 27 27 62 26 RELATIVE HUMIDITY (MEAN% 03UTC) 78 68 75 36 26 35 23 23 21 46 50 85 47 RELATIVE HUMIDITY (MEAN% 09UTC) 59 48 48 19 16 22 14 12 13 32 34 67 32 RELATIVE HUMIDITY (MEAN% 15UTC) 64 46 42 20 16 24 12 10 12 34 37 77 33 RH=0 => RELATIVE HUMIDITY < 0.5% AMOUNT OF PRECIPITATION MM. 86.2 46.5 55.8 11.6 0.0 0.0 0.0 0.0 0.0 1.0 21.0 63.3 285.4 DAYS WITH PRECIPITATION >=10 2 1 3 0 0 0 0 0 0 0 1 1 8 DAYS WITH PRECIPITATION >= 5 2 4 3 1 0 0 0 0 0 0 1 4 15 DAYS WITH PRECIPITATION >= 1 6 8 9 2 0 0 0 0 0 1 1 5 32 DAYS WITH PRECIPITATION 6 9 9 3 0 0 0 0 0 1 1 7 36 GREATEST DAILY PRECIPITATION 63.0 18.0 18.0 7.0 0.0 0.0 0.0 0.0 0.0 1.0 21.0 39.0 63.0 DAY 14 1 13 18 ** ** ** ** ** 15 5 22 DAY WITH THUNDER STORM 1 1 1 0 0 0 0 0 0 0 0 1 4 DAYS WITH SNOW OR SLEET 0 0 0 0 0 0 0 0 0 0 0 0 0 DAYS WITH DUST 0 1 9 19 21 16 17 0 0 0 0 0 83 WIND DIRECTION (PREVAILING) 90 270 90 270 270 270 270 270 270 270 135 90 270 PREVAILING WIND SPEED(KNOTS) 14.7 9.2 20.2 13.9 18.2 15.8 17.5 16.5 10.1 9.7 14.4 13.9 14.3 PREVAILING WIND PERCENT 11.6 11.4 14.8 24.7 49.7 38.7 23.9 22.6 15.3 10.3 16.0 17.4 19.1 CALMS PERCENT OF WIND 66.5 60.0 47.1 26.0 32.3 32.7 61.3 67.7 72.0 76.1 65.3 69.0 56.4 NO. OF WIND OBSERVATION 155 140 155 150 155 150 155 155 150 155 150 155 1825 VECTOR WIND DIRECTION (MEAN) 108 138 127 249 268 273 266 264 277 302 121 96 253 VECTOR WIND MAGNITUDE(KNOTS) 1.7 1.5 2.3 1.6 9.8 5.3 4.7 3.9 1.3 1.4 3.4 2.6 1.5 WIND STEADINESES (MEAN %) 51.5 27.8 37.7 17.0 85.2 60.2 90.4 86.7 44.8 58.3 68.0 74.3 26.3 WIND SPEED (MEAN KNOTS) 3.3 5.4 6.1 9.4 11.5 8.8 5.2 4.5 2.9 2.4 5.0 3.5 5.7 FASTEST WIND DIRECTION 90 90 90 120 270 290 270 270 110 330 90 90 290 FASTEST WIND SPEED (KNOTS) 29 31 31 29 29 33 29 27 27 19 23 29 33 DAY 30 26 5 3 3 6 13 26 28 1 3 31 DAYS WITH SKY CLEAR (0-2)/8 11 13 10 11 17 29 31 31 29 18 19 12 231 DAYS WITH P.CLOUDY (3-6)/8 9 8 11 10 7 0 0 0 1 12 8 5 71 DAYS WITH CLOUDY (7-8)/8 11 7 10 9 7 1 0 0 0 1 3 14 63 DAYS WITH VISIBILITY =< 2 KM 1 1 2 1 5 1 0 0 0 0 0 1 12 DURATION OF SUNSHINE HOURS ****** 175.2 187.1 214.4 271.0 344.5 349.7 317.3 282.3 ****** 196.4 40.7 ****** ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION DEHLORAN (40796) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 32 41 N LONGITUDE 47 16 E DATA PROCESSING CENTER ELEVATION 232.0 M MEANS AND EXTREMES FOR THE YEAR 1991 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL MEAN QFE PRESSURE IN HPA 992.7 991.7 987.1 986.4 982.3 976.0 972.4 974.4 981.4 988.6 991.9 992.0 984.8 MAX. QFE PRESSURE IN HPA 1002.0 1000.4 994.0 992.4 986.6 984.0 978.3 980.1 988.7 995.2 997.0 999.3 1002.0 DAY-HOUR 28- 6 15- 6 8- 6 19- 6 8- 6 1- 6 2- 6 31- 6 29- 3 20- 3 27- 6 6- 6 MIN. QFE PRESSURE IN HPA 984.0 983.5 977.0 980.0 977.0 968.9 967.4 969.3 974.8 983.6 981.8 982.7 967.4 DAY-HOUR 25-12 7-12 6- 3 28-15 27-12 19-15 13-15 10-15 3-15 14-12 4-12 31-15 MEAN QNH PRESSURE IN HPA 1020.2 1019.1 1014.4 1013.7 1009.4 1003.1 999.3 1001.4 1008.6 1015.9 1019.3 1019.4 1012.0 MAX. QNH PRESSURE IN HPA 1029.6 1028.0 1021.4 1019.8 1013.9 1011.2 1005.4 1007.2 1016.0 1022.7 1024.5 1026.9 1029.6 DAY-HOUR 28- 6 15- 6 8- 6 19- 6 8- 6 1- 6 2- 6 31- 6 29- 3 20- 3 27- 6 6- 6 MIN. QNH PRESSURE IN HPA 1011.2 1010.7 1004.1 1007.1 1004.1 995.8 994.3 996.2 1001.8 1010.8 1009.0 1009.9 994.3 DAY-HOUR 25-12 7-12 6- 3 28-15 27-12 19-15 13-15 10-15 3-15 14-12 4-12 31-15 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY-HOUR **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY-HOUR **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** PRESSURE AT HOUR 0000 UTC. MEAN QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** PRESSURE AT HOUR 0300 UTC. MEAN QFE PRESSURE IN HPA 992.8 991.8 986.9 986.4 982.3 976.4 972.5 974.6 981.6 988.5 991.8 992.0 984.8 MAX. QFE PRESSURE IN HPA 1000.8 998.8 993.0 991.2 985.0 983.3 978.0 978.8 988.7 995.2 996.1 997.8 1000.8 DAY 28 16 8 19 8 1 2 31 29 20 27 6 MIN. QFE PRESSURE IN HPA 986.5 986.0 977.0 981.5 978.2 969.2 968.5 971.8 976.8 984.3 987.1 985.5 968.5 DAY 26 20 6 9 27 19 14 1 3 14 4 22 MEAN QNH PRESSURE IN HPA 1020.2 1019.2 1014.2 1013.7 1009.5 1003.4 999.5 1001.6 1008.7 1015.8 1019.2 1019.4 1012.0 MAX. QNH PRESSURE IN HPA 1028.4 1026.4 1020.4 1018.6 1012.2 1010.5 1005.1 1005.9 1016.0 1022.7 1023.6 1025.3 1028.4 DAY 28 16 8 19 8 1 2 31 29 20 27 6 MIN. QNH PRESSURE IN HPA 1013.8 1013.3 1004.1 1008.7 1005.3 996.1 995.4 998.7 1003.9 1011.5 1014.4 1012.8 995.4 DAY 26 20 6 9 27 19 14 1 3 14 4 22 MEAN QFF PRESSURE IN HPA 1020.7 1019.7 1014.1 1012.8 1008.3 1001.5 997.5 999.7 1007.1 1014.8 1018.8 1019.7 1011.2 MAX. QFF PRESSURE IN HPA 1029.3 1026.7 1021.1 1018.1 1011.3 1009.0 1003.1 1004.2 1014.5 1021.7 1023.7 1025.8 1029.3 DAY 28 10 8 14 25 1 2 31 29 20 27 6 MIN. QFF PRESSURE IN HPA 1014.3 1013.3 1004.2 1007.4 1003.9 993.5 993.4 996.7 1002.0 1010.1 1013.2 1013.1 993.4 DAY 26 20 6 28 27 19 14 5 3 14 4 22 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION DEHLORAN (40796) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 32 41 N LONGITUDE 47 16 E DATA PROCESSING CENTER ELEVATION 232.0 M MEANS AND EXTREMES FOR THE YEAR 1991 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 0600 UTC. MEAN QFE PRESSURE IN HPA 993.9 993.1 988.2 987.6 983.5 977.2 973.4 975.6 982.8 989.8 993.2 993.0 986.0 MAX. QFE PRESSURE IN HPA 1002.0 1000.4 994.0 992.4 986.6 984.0 978.3 980.1 988.7 994.0 997.0 999.3 1002.0 DAY 28 15 8 19 8 1 2 31 29 18 27 6 MIN. QFE PRESSURE IN HPA 987.6 986.5 978.2 982.1 979.0 970.9 969.3 972.6 978.0 985.1 987.1 985.7 969.3 DAY 25 28 6 28 27 19 14 5 3 14 4 25 MEAN QNH PRESSURE IN HPA 1021.4 1020.5 1015.5 1014.9 1010.7 1004.3 1000.4 1002.7 1010.0 1017.1 1020.6 1020.5 1013.2 MAX. QNH PRESSURE IN HPA 1029.6 1028.0 1021.4 1019.8 1013.9 1011.2 1005.4 1007.2 1016.0 1021.4 1024.5 1026.9 1029.6 DAY 28 15 8 19 8 1 2 31 29 18 27 6 MIN. QNH PRESSURE IN HPA 1014.9 1013.8 1005.3 1009.3 1006.1 997.8 996.2 999.6 1005.1 1012.4 1014.4 1013.0 996.2 DAY 25 28 6 28 27 19 14 5 3 14 4 25 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** PRESSURE AT HOUR 0900 UTC. MEAN QFE PRESSURE IN HPA 993.1 992.5 988.0 987.1 983.1 976.8 973.3 975.2 982.3 989.3 992.5 992.2 985.4 MAX. QFE PRESSURE IN HPA 1001.0 1000.4 993.2 991.9 986.1 983.0 978.1 979.6 987.0 993.4 996.8 998.1 1001.0 DAY 28 15 8 19 8 1 2 31 29 20 27 6 MIN. QFE PRESSURE IN HPA 986.6 985.5 980.5 981.7 978.5 970.4 969.0 971.7 977.5 984.1 985.9 982.9 969.0 DAY 25 28 6 28 27 19 14 1 3 14 4 25 MEAN QNH PRESSURE IN HPA 1020.6 1019.9 1015.3 1014.4 1010.3 1003.8 1000.2 1002.2 1009.5 1016.6 1019.9 1019.6 1012.7 MAX. QNH PRESSURE IN HPA 1028.6 1028.0 1020.6 1019.3 1013.4 1010.2 1005.2 1006.7 1014.3 1020.8 1024.3 1025.6 1028.6 DAY 28 15 8 19 8 1 2 31 29 20 27 6 MIN. QNH PRESSURE IN HPA 1013.9 1012.8 1007.6 1008.9 1005.6 997.3 995.9 998.6 1004.6 1011.3 1013.2 1010.1 995.9 DAY 25 28 6 28 27 19 14 1 3 14 4 25 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** PRESSURE AT HOUR 1200 UTC. MEAN QFE PRESSURE IN HPA 991.7 990.5 986.2 985.7 981.6 975.3 971.8 973.7 980.5 987.7 990.9 991.1 983.9 MAX. QFE PRESSURE IN HPA 999.0 999.0 991.0 990.6 985.7 980.2 977.0 978.0 984.7 991.5 994.9 996.6 999.0 DAY 28 15 8 14 8 1 2 31 30 20 27 29 MIN. QFE PRESSURE IN HPA 984.0 983.5 980.5 980.8 977.0 969.3 968.2 970.3 975.3 983.6 981.8 982.9 968.2 DAY 25 7 6 28 27 19 14 1 3 14 4 25 MEAN QNH PRESSURE IN HPA 1019.1 1017.9 1013.5 1013.0 1008.7 1002.3 998.7 1000.6 1007.6 1015.0 1018.3 1018.5 1011.1 MAX. QNH PRESSURE IN HPA 1026.6 1026.6 1018.4 1018.0 1013.0 1007.3 1004.1 1005.1 1011.9 1018.9 1022.4 1024.1 1026.6 DAY 28 15 8 14 8 1 2 31 30 20 27 29 MIN. QNH PRESSURE IN HPA 1011.2 1010.7 1007.6 1008.0 1004.1 996.2 995.1 997.2 1002.3 1010.8 1009.0 1010.1 995.1 DAY 25 7 6 28 27 19 14 1 3 14 4 25 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION DEHLORAN (40796) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 32 41 N LONGITUDE 47 16 E DATA PROCESSING CENTER ELEVATION 232.0 M MEANS AND EXTREMES FOR THE YEAR 1991 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 1500 UTC. MEAN QFE PRESSURE IN HPA 992.3 990.9 986.2 985.2 980.9 974.7 971.0 973.1 980.1 987.7 991.2 991.7 983.7 MAX. QFE PRESSURE IN HPA 998.5 998.8 990.5 989.5 984.5 978.9 976.1 977.7 984.8 991.9 995.6 997.2 998.8 DAY 28 15 11 13 8 22 2 31 29 20 26 29 MIN. QFE PRESSURE IN HPA 985.0 984.0 980.5 980.0 977.3 968.9 967.4 969.3 974.8 984.2 984.6 982.7 967.4 DAY 25 7 6 28 28 19 13 10 3 9 4 31 MEAN QNH PRESSURE IN HPA 1019.7 1018.2 1013.4 1012.5 1008.1 1001.7 998.0 1000.1 1007.2 1015.0 1018.5 1019.1 1011.0 MAX. QNH PRESSURE IN HPA 1026.1 1026.4 1017.9 1016.8 1011.7 1006.0 1003.1 1004.8 1012.0 1019.3 1023.1 1024.7 1026.4 DAY 28 15 11 13 8 22 2 31 29 20 26 29 MIN. QNH PRESSURE IN HPA 1012.2 1011.2 1007.6 1007.1 1004.4 995.8 994.3 996.2 1001.8 1011.4 1011.8 1009.9 994.3 DAY 25 7 6 28 28 19 13 10 3 9 4 31 MEAN QFF PRESSURE IN HPA 1020.2 1018.7 1013.3 1011.6 1006.8 999.7 996.0 998.2 1005.6 1013.9 1018.1 1019.5 1010.1 MAX. QFF PRESSURE IN HPA 1026.9 1026.7 1018.3 1016.4 1010.3 1004.2 1001.1 1003.1 1010.7 1018.3 1023.2 1025.2 1026.9 DAY 28 15 11 13 8 1 2 31 29 20 26 29 MIN. QFF PRESSURE IN HPA 1012.2 1011.2 1007.8 1005.8 1002.9 993.1 992.3 994.1 1000.1 1010.2 1011.0 1010.3 992.3 DAY 31 28 6 28 16 19 13 10 3 9 4 31 PRESSURE AT HOUR 1800 UTC. MEAN QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** PRESSURE AT HOUR 2100 UTC. MEAN QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION DEHLORAN (40796) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 32 41 N LONGITUDE 47 16 E DATA PROCESSING CENTER ELEVATION 232.0 M MEANS AND EXTREMES FOR THE YEAR 1992 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AIR TEMPERATURE (C) 9.1 11.4 14.6 23.3 30.1 37.2 39.3 39.0 35.7 29.0 19.8 12.3 25.1 MINIMUN AIR TEMPERATURE (C) 4.1 6.1 8.4 14.9 22.0 28.0 29.0 30.1 26.3 20.1 13.5 8.0 17.5 DAYS WITH MINIMUM TEMP. >=21 0 0 0 1 19 30 31 31 27 10 0 0 149 DAYS WITH MINIMUM TEMP. <=-4 0 0 0 0 0 0 0 0 0 0 0 0 0 DAYS WITH FREEZING MIN.<= 0 1 1 0 0 0 0 0 0 0 0 0 0 2 TEMPERATURE RECORDS LOWEST(C) -0.4 0.0 2.5 8.6 18.0 22.0 24.0 26.2 18.0 16.6 3.0 1.5 -0.4 DAY 4 12 1 1 4 6 13 26 29 28 28 27 MAXIMUM AIR TEMPERATURE (C) 12.6 15.0 18.6 27.5 34.3 42.0 45.1 44.3 40.5 34.2 24.3 15.5 29.5 DAYS WITH MAXIMUM TEMP. >=30 0 0 0 6 29 30 31 31 30 31 4 0 192 DAYS WITH MAXIMUM TEMP. <= 0 0 0 0 0 0 0 0 0 0 0 0 0 0 TEMPERATURE RECORDS HIGHEST(C) 16.5 20.0 24.0 31.2 43.2 46.6 48.0 48.0 44.5 38.8 31.4 22.2 48.0 DAY 20 20 29 12 31 30 7 17 3 4 4 1 DIF. BETWEEN (MAX.-MIN.) (C) 8.5 8.9 10.2 12.6 12.3 14.0 16.1 14.2 14.2 14.1 10.8 7.5 12.0 MEAN DAILY TEMP. (MDT) (C) 8.4 10.6 13.5 21.2 28.2 35.0 37.1 37.2 33.4 27.1 18.9 11.7 23.5 COOLING DEG. DAYS(BASE 21 0C) 0.0 0.0 0.0 37.9 222.1 420.7 498.9 501.6 371.5 190.1 18.5 0.0 2261.5 HEATING DEG. DAYS(BASE 18 0C) 298.5 215.3 140.5 5.3 0.0 0.0 0.0 0.0 0.0 0.0 44.7 195.1 899.3 DEWPOINT (MEAN C) 0.6 4.1 6.7 7.2 6.4 8.6 7.6 6.6 3.0 1.2 8.1 7.3 5.6 MIXING RATIO (G/KG) 4.23 5.54 6.52 6.71 6.38 7.51 6.95 6.45 5.16 4.39 7.35 6.67 6.15 VAPOUR PRESSURE (HPA) 6.70 8.75 10.27 10.52 9.97 11.65 10.75 10.01 8.07 6.91 11.57 10.54 9.64 SATURATION DEF. (HPA) 5.16 5.15 6.82 18.99 34.44 53.08 62.63 61.89 52.39 34.47 12.69 4.21 29.33 RELATIVE HUMIDITY (MEAN %) 59 65 64 39 25 19 16 15 14 18 51 73 38 RELATIVE HUMIDITY (MAX. %) 78 79 81 60 39 27 25 23 22 26 66 89 51 RELATIVE HUMIDITY (MIN. %) 40 51 48 26 17 13 10 10 9 12 38 58 28 RELATIVE HUMIDITY (MEAN% 03UTC) 71 77 77 57 38 26 24 22 22 26 62 84 49 RELATIVE HUMIDITY (MEAN% 09UTC) 51 59 57 32 20 18 14 12 12 14 44 67 33 RELATIVE HUMIDITY (MEAN% 15UTC) 56 61 60 32 21 16 11 12 12 17 50 75 35 RH=0 => RELATIVE HUMIDITY < 0.5% AMOUNT OF PRECIPITATION MM. 20.5 42.9 97.9 35.5 17.2 0.0 0.0 0.0 0.0 0.0 35.0 117.5 366.5 DAYS WITH PRECIPITATION >=10 0 1 3 1 1 0 0 0 0 0 1 4 11 DAYS WITH PRECIPITATION >= 5 1 3 6 1 1 0 0 0 0 0 3 5 20 DAYS WITH PRECIPITATION >= 1 7 8 8 4 2 0 0 0 0 0 6 10 45 DAYS WITH PRECIPITATION 8 12 9 5 3 0 0 0 0 0 6 11 54 GREATEST DAILY PRECIPITATION 7.0 14.0 43.0 30.0 16.0 0.0 0.0 0.0 0.0 0.0 16.0 37.0 43.0 DAY 30 23 15 27 9 ** ** ** ** ** 12 15 DAY WITH THUNDER STORM 0 0 0 0 0 0 0 0 0 0 0 0 0 DAYS WITH SNOW OR SLEET 0 0 0 0 0 0 0 0 0 0 0 0 0 DAYS WITH DUST 0 0 0 0 0 0 4 1 0 0 1 0 6 WIND DIRECTION (PREVAILING) 135 270 90 135 270 270 270 270 270 270 90 90 270 PREVAILING WIND SPEED(KNOTS) 13.5 7.5 17.5 9.7 14.5 12.3 15.1 12.2 9.6 9.5 13.4 16.5 11.0 PREVAILING WIND PERCENT 12.9 11.7 9.7 12.7 15.5 25.3 28.4 7.7 31.3 7.1 18.7 18.7 14.0 CALMS PERCENT OF WIND 68.4 61.4 70.3 55.3 45.8 58.7 54.2 75.5 60.0 82.6 62.0 57.4 62.7 NO. OF WIND OBSERVATION 155 145 155 150 155 150 155 155 150 155 150 155 1830 VECTOR WIND DIRECTION (MEAN) 118 105 97 119 207 274 270 313 255 297 100 101 206 VECTOR WIND MAGNITUDE(KNOTS) 2.5 1.3 1.6 1.8 0.5 2.9 4.5 1.8 3.2 0.8 2.1 2.8 0.3 WIND STEADINESES (MEAN %) 59.5 29.5 50.0 38.3 7.4 63.0 77.6 60.0 84.2 57.1 56.8 52.8 7.1 WIND SPEED (MEAN KNOTS) 4.2 4.4 3.2 4.7 6.8 4.6 5.8 3.0 3.8 1.4 3.7 5.3 4.2 FASTEST WIND DIRECTION 90 90 90 90 90 280 290 270 270 260 90 90 90 FASTEST WIND SPEED (KNOTS) 27 33 27 23 29 29 27 27 19 23 23 27 33 DAY 30 23 30 13 8 28 17 1 17 5 7 8 DAYS WITH SKY CLEAR (0-2)/8 15 11 15 12 15 25 31 31 30 30 14 13 242 DAYS WITH P.CLOUDY (3-6)/8 9 9 10 14 8 3 0 0 0 1 9 10 73 DAYS WITH CLOUDY (7-8)/8 7 9 6 4 8 2 0 0 0 0 7 8 51 DAYS WITH VISIBILITY =< 2 KM 3 2 0 0 0 0 0 0 0 0 0 0 5 DURATION OF SUNSHINE HOURS 113.2 133.0 175.9 197.5 221.7 304.8 334.8 332.8 303.8 284.9 188.4 156.8 2747.6 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION DEHLORAN (40796) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 32 41 N LONGITUDE 47 16 E DATA PROCESSING CENTER ELEVATION 232.0 M MEANS AND EXTREMES FOR THE YEAR 1992 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL MEAN QFE PRESSURE IN HPA 995.0 992.6 991.3 986.6 983.5 977.6 973.9 976.0 982.1 987.4 993.0 994.0 986.1 MAX. QFE PRESSURE IN HPA 1006.3 1000.7 999.6 991.4 989.8 984.1 980.2 979.5 988.3 994.1 999.4 1001.2 1006.3 DAY-HOUR 4- 9 13- 6 12- 6 21- 6 14- 6 11- 6 6- 6 31- 9 29- 6 29- 6 29- 6 28- 6 MIN. QFE PRESSURE IN HPA 980.6 981.2 977.5 977.2 977.2 970.6 968.7 970.0 976.2 980.6 987.9 987.7 968.7 DAY-HOUR 30-12 24- 3 30-15 17-15 9-15 28-15 19-15 18-15 4-15 6-12 22-12 3- 3 MEAN QNH PRESSURE IN HPA 1022.4 1020.0 1018.7 1013.9 1010.7 1004.7 1000.9 1003.0 1009.3 1014.7 1020.4 1021.4 1013.4 MAX. QNH PRESSURE IN HPA 1034.0 1028.3 1027.2 1018.8 1017.2 1011.3 1007.3 1006.6 1015.6 1021.6 1027.0 1028.8 1034.0 DAY-HOUR 4- 9 13- 6 12- 6 21- 6 14- 6 11- 6 6- 6 31- 9 29- 6 29- 6 29- 6 28- 6 MIN. QNH PRESSURE IN HPA 1007.8 1008.4 1004.6 1004.3 1004.3 997.5 995.6 996.9 1003.2 1007.8 1015.2 1015.0 995.6 DAY-HOUR 30-12 24- 3 30-15 17-15 9-15 28-15 19-15 18-15 4-15 6-12 22-12 3- 3 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY-HOUR **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY-HOUR **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** PRESSURE AT HOUR 0000 UTC. MEAN QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** PRESSURE AT HOUR 0300 UTC. MEAN QFE PRESSURE IN HPA 994.9 992.4 991.2 986.6 983.5 977.8 974.0 976.1 982.1 987.2 992.9 993.8 986.0 MAX. QFE PRESSURE IN HPA 1003.4 999.5 998.3 989.7 988.1 983.2 979.4 978.3 987.0 992.9 997.8 999.4 1003.4 DAY 4 12 12 21 14 6 6 12 29 29 28 28 MIN. QFE PRESSURE IN HPA 988.2 981.2 979.6 982.5 979.8 971.7 969.0 972.4 977.7 982.0 989.0 987.7 969.0 DAY 31 24 31 24 17 28 19 18 4 6 25 3 MEAN QNH PRESSURE IN HPA 1022.3 1019.8 1018.5 1013.9 1010.8 1004.9 1001.0 1003.2 1009.3 1014.5 1020.3 1021.3 1013.3 MAX. QNH PRESSURE IN HPA 1031.1 1027.1 1025.8 1017.1 1015.4 1010.4 1006.5 1005.4 1014.3 1020.3 1025.3 1027.0 1031.1 DAY 4 12 12 21 14 6 6 12 29 29 28 28 MIN. QNH PRESSURE IN HPA 1015.5 1008.4 1006.7 1009.7 1006.9 998.6 995.9 999.4 1004.8 1009.2 1016.3 1015.0 995.9 DAY 31 24 31 24 17 28 19 18 4 6 25 3 MEAN QFF PRESSURE IN HPA 1023.1 1020.4 1018.8 1013.4 1009.6 1003.0 999.0 1001.2 1007.7 1013.6 1020.1 1021.7 1012.6 MAX. QFF PRESSURE IN HPA 1032.5 1028.4 1026.2 1016.9 1014.4 1008.7 1004.5 1003.6 1013.5 1019.7 1026.2 1028.0 1032.5 DAY 4 12 12 3 14 6 6 12 29 29 28 28 MIN. QFF PRESSURE IN HPA 1016.3 1008.2 1006.6 1008.8 1005.6 996.8 994.0 997.3 1002.8 1008.1 1016.1 1014.7 994.0 DAY 31 24 31 24 17 28 19 18 9 6 25 3 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION DEHLORAN (40796) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 32 41 N LONGITUDE 47 16 E DATA PROCESSING CENTER ELEVATION 232.0 M MEANS AND EXTREMES FOR THE YEAR 1992 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 0600 UTC. MEAN QFE PRESSURE IN HPA 996.2 993.7 992.5 987.8 984.6 978.6 974.9 977.1 983.4 988.8 994.2 995.1 987.2 MAX. QFE PRESSURE IN HPA 1006.1 1000.7 999.6 991.4 989.8 984.1 980.2 979.3 988.3 994.1 999.4 1001.2 1006.1 DAY 4 13 12 21 14 11 6 31 29 29 29 28 MIN. QFE PRESSURE IN HPA 987.3 982.6 981.9 982.0 980.6 972.7 970.1 972.8 978.9 983.1 989.4 988.3 970.1 DAY 30 24 30 24 9 28 19 18 4 7 22 3 MEAN QNH PRESSURE IN HPA 1023.7 1021.1 1019.9 1015.1 1011.8 1005.7 1001.9 1004.2 1010.6 1016.1 1021.6 1022.5 1014.5 MAX. QNH PRESSURE IN HPA 1033.8 1028.3 1027.2 1018.8 1017.2 1011.3 1007.3 1006.4 1015.6 1021.6 1027.0 1028.8 1033.8 DAY 4 13 12 21 14 11 6 31 29 29 29 28 MIN. QNH PRESSURE IN HPA 1014.6 1009.8 1009.1 1009.2 1007.8 999.7 997.0 999.8 1006.0 1010.3 1016.7 1015.6 997.0 DAY 30 24 30 24 9 28 19 18 4 7 22 3 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** PRESSURE AT HOUR 0900 UTC. MEAN QFE PRESSURE IN HPA 995.6 993.2 992.0 987.4 984.3 978.3 974.6 976.6 982.8 988.1 993.4 994.3 986.7 MAX. QFE PRESSURE IN HPA 1006.3 1000.6 999.1 991.0 989.6 984.1 979.7 979.5 988.2 993.1 998.1 1001.2 1006.3 DAY 4 12 12 20 14 11 6 31 28 29 29 28 MIN. QFE PRESSURE IN HPA 985.1 982.4 979.0 982.4 979.5 972.6 970.1 971.8 977.8 982.7 988.7 988.1 970.1 DAY 30 24 30 17 8 28 19 18 4 6 22 3 MEAN QNH PRESSURE IN HPA 1023.1 1020.7 1019.4 1014.7 1011.5 1005.4 1001.7 1003.7 1010.0 1015.4 1020.9 1021.8 1014.0 MAX. QNH PRESSURE IN HPA 1034.0 1028.2 1026.7 1018.4 1017.0 1011.3 1006.8 1006.6 1015.5 1020.5 1025.6 1028.8 1034.0 DAY 4 12 12 20 14 11 6 31 28 29 29 28 MIN. QNH PRESSURE IN HPA 1012.4 1009.6 1006.1 1009.6 1006.6 999.6 997.0 998.7 1004.9 1009.9 1016.0 1015.4 997.0 DAY 30 24 30 17 8 28 19 18 4 6 22 3 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** PRESSURE AT HOUR 1200 UTC. MEAN QFE PRESSURE IN HPA 994.0 991.6 990.5 985.8 982.9 976.9 973.4 975.2 981.2 986.6 992.1 993.3 985.3 MAX. QFE PRESSURE IN HPA 1004.1 998.4 997.6 989.7 987.8 982.5 978.4 978.5 987.1 991.8 997.0 1000.8 1004.1 DAY 4 12 12 20 14 10 6 31 28 29 30 28 MIN. QFE PRESSURE IN HPA 980.6 981.3 977.8 979.9 978.1 971.1 969.3 970.1 976.5 980.6 987.9 988.1 969.3 DAY 30 24 30 17 8 28 19 18 4 6 22 3 MEAN QNH PRESSURE IN HPA 1021.4 1019.0 1017.8 1013.0 1010.1 1004.0 1000.4 1002.3 1008.4 1013.8 1019.6 1020.7 1012.5 MAX. QNH PRESSURE IN HPA 1031.8 1026.0 1025.1 1017.1 1015.1 1009.7 1005.5 1005.6 1014.4 1019.2 1024.5 1028.4 1031.8 DAY 4 12 12 20 14 10 6 31 28 29 30 28 MIN. QNH PRESSURE IN HPA 1007.8 1008.5 1004.9 1007.0 1005.2 998.0 996.2 997.0 1003.6 1007.8 1015.2 1015.4 996.2 DAY 30 24 30 17 8 28 19 18 4 6 22 3 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION DEHLORAN (40796) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 32 41 N LONGITUDE 47 16 E DATA PROCESSING CENTER ELEVATION 232.0 M MEANS AND EXTREMES FOR THE YEAR 1992 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 1500 UTC. MEAN QFE PRESSURE IN HPA 994.3 992.1 990.3 985.3 982.4 976.5 972.8 974.9 981.1 986.7 992.5 993.5 985.2 MAX. QFE PRESSURE IN HPA 1004.3 998.6 996.4 990.2 987.2 982.2 977.5 978.3 987.3 992.0 997.4 1001.0 1004.3 DAY 4 12 12 20 14 10 6 31 28 29 29 28 MIN. QFE PRESSURE IN HPA 980.6 984.5 977.5 977.2 977.2 970.6 968.7 970.0 976.2 980.8 988.2 988.7 968.7 DAY 30 24 30 17 9 28 19 18 4 6 22 21 MEAN QNH PRESSURE IN HPA 1021.8 1019.5 1017.7 1012.6 1009.6 1003.6 999.8 1001.9 1008.2 1014.0 1019.9 1020.9 1012.5 MAX. QNH PRESSURE IN HPA 1032.0 1026.2 1023.9 1017.6 1014.5 1009.4 1004.6 1005.4 1014.6 1019.4 1024.9 1028.6 1032.0 DAY 4 12 12 20 14 10 6 31 28 29 29 28 MIN. QNH PRESSURE IN HPA 1007.8 1011.7 1004.6 1004.3 1004.3 997.5 995.6 996.9 1003.2 1008.0 1015.5 1016.0 995.6 DAY 30 24 30 17 9 28 19 18 4 6 22 21 MEAN QFF PRESSURE IN HPA 1022.6 1020.0 1018.0 1012.0 1008.4 1001.8 997.9 1000.0 1006.7 1013.1 1019.7 1021.4 1011.8 MAX. QFF PRESSURE IN HPA 1033.3 1027.3 1024.1 1017.0 1013.5 1007.5 1002.8 1003.3 1013.5 1018.7 1025.5 1029.7 1033.3 DAY 4 12 12 20 14 10 12 31 28 29 29 28 MIN. QFF PRESSURE IN HPA 1008.3 1011.5 1004.2 1003.6 1003.0 995.6 993.7 995.0 1001.5 1006.9 1015.0 1016.1 993.7 DAY 30 24 30 17 9 28 19 18 4 6 22 2 PRESSURE AT HOUR 1800 UTC. MEAN QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** PRESSURE AT HOUR 2100 UTC. MEAN QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION DEHLORAN (40796) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 32 41 N LONGITUDE 47 16 E DATA PROCESSING CENTER ELEVATION 232.0 M MEANS AND EXTREMES FOR THE YEAR 1993 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AIR TEMPERATURE (C) 10.7 13.1 17.9 24.1 31.1 38.2 41.6 40.2 36.5 29.3 18.8 16.9 26.5 MINIMUN AIR TEMPERATURE (C) 5.9 7.7 11.2 16.7 23.8 28.3 31.5 30.9 27.0 21.6 13.2 11.1 19.1 DAYS WITH MINIMUM TEMP. >=21 0 0 0 4 21 30 31 31 30 22 0 0 169 DAYS WITH MINIMUM TEMP. <=-4 0 0 0 0 0 0 0 0 0 0 0 0 0 DAYS WITH FREEZING MIN.<= 0 0 1 0 0 0 0 0 0 0 0 0 0 1 TEMPERATURE RECORDS LOWEST(C) 1.5 0.0 5.4 13.0 17.2 24.0 27.5 28.0 22.5 18.0 1.8 7.0 0.0 DAY 14 16 13 3 1 22 5 16 30 28 14 16 MAXIMUM AIR TEMPERATURE (C) 14.4 16.8 21.8 28.6 34.7 42.6 46.2 44.9 41.9 34.1 22.9 21.4 30.9 DAYS WITH MAXIMUM TEMP. >=30 0 0 2 7 26 30 31 31 30 27 0 0 184 DAYS WITH MAXIMUM TEMP. <= 0 0 0 0 0 0 0 0 0 0 0 0 0 0 TEMPERATURE RECORDS HIGHEST(C) 19.0 23.8 30.0 37.6 40.6 46.0 49.6 47.0 46.8 39.6 27.4 24.6 49.6 DAY 29 28 30 18 17 30 30 20 1 1 20 22 DIF. BETWEEN (MAX.-MIN.) (C) 8.5 9.1 10.6 11.9 10.9 14.3 14.7 14.0 14.9 12.5 9.7 10.3 11.8 MEAN DAILY TEMP. (MDT) (C) 10.1 12.2 16.5 22.7 29.2 35.5 38.9 37.9 34.4 27.9 18.0 16.2 25.0 COOLING DEG. DAYS(BASE 21 0C) 0.0 0.0 3.2 60.0 255.7 434.1 553.8 524.1 402.9 213.5 4.1 0.0 2451.6 HEATING DEG. DAYS(BASE 18 0C) 244.0 161.9 65.2 0.0 0.0 0.0 0.0 0.0 0.0 0.0 45.7 58.4 575.1 DEWPOINT (MEAN C) 5.0 5.1 6.5 10.0 9.5 8.9 10.0 8.8 3.0 3.6 7.4 5.6 7.0 MIXING RATIO (G/KG) 5.70 5.83 6.48 8.18 7.93 7.50 8.20 7.52 5.08 5.27 6.99 5.87 6.71 VAPOUR PRESSURE (HPA) 9.01 9.20 10.19 12.80 12.37 11.64 12.66 11.67 7.94 8.31 11.00 9.29 10.51 SATURATION DEF. (HPA) 4.20 6.41 11.10 18.65 34.64 57.28 69.91 64.95 55.36 33.86 11.54 10.40 31.53 RELATIVE HUMIDITY (MEAN %) 71 62 51 47 29 18 16 16 13 23 51 50 37 RELATIVE HUMIDITY (MAX. %) 86 80 67 65 44 29 24 24 20 31 69 67 51 RELATIVE HUMIDITY (MIN. %) 53 46 36 34 20 12 11 11 9 15 37 34 27 RELATIVE HUMIDITY (MEAN% 03UTC) 83 76 64 64 43 29 24 24 19 30 66 64 49 RELATIVE HUMIDITY (MEAN% 09UTC) 65 54 45 41 24 15 14 14 12 19 43 43 32 RELATIVE HUMIDITY (MEAN% 15UTC) 71 60 48 44 26 15 14 13 12 21 48 47 35 RH=0 => RELATIVE HUMIDITY < 0.5% AMOUNT OF PRECIPITATION MM. 81.5 94.2 22.2 89.0 10.8 0.0 0.0 0.0 0.0 14.5 48.3 15.1 375.6 DAYS WITH PRECIPITATION >=10 2 4 1 2 0 0 0 0 0 1 3 1 14 DAYS WITH PRECIPITATION >= 5 2 4 1 8 1 0 0 0 0 1 4 1 22 DAYS WITH PRECIPITATION >= 1 6 7 4 10 2 0 0 0 0 1 4 3 37 DAYS WITH PRECIPITATION 6 8 6 13 4 0 0 0 0 2 5 4 48 GREATEST DAILY PRECIPITATION 36.0 31.0 12.0 31.0 9.0 0.0 0.0 0.0 0.0 14.0 14.0 11.0 36.0 DAY 8 3 8 26 12 ** ** ** ** 28 12 15 DAY WITH THUNDER STORM 0 0 0 0 0 0 0 0 0 0 0 0 0 DAYS WITH SNOW OR SLEET 0 0 0 0 0 0 0 0 0 0 0 0 0 DAYS WITH DUST 0 0 0 0 3 0 0 0 7 11 0 0 21 WIND DIRECTION (PREVAILING) 270 90 90 270 270 270 270 270 270 270 270 270 270 PREVAILING WIND SPEED(KNOTS) 7.5 13.7 15.9 10.4 11.4 11.7 12.3 12.9 14.1 11.4 7.5 6.9 10.6 PREVAILING WIND PERCENT 14.2 16.4 16.8 19.3 28.4 28.7 14.2 20.6 31.3 25.3 23.5 11.6 20.1 CALMS PERCENT OF WIND 65.2 52.1 59.4 29.3 23.2 49.3 49.0 41.9 56.0 51.3 51.0 64.5 49.4 NO. OF WIND OBSERVATION 155 140 155 150 155 150 155 155 150 154 149 155 1823 VECTOR WIND DIRECTION (MEAN) 145 109 92 137 287 274 224 241 263 248 106 109 223 VECTOR WIND MAGNITUDE(KNOTS) 0.8 2.1 2.0 0.7 2.1 4.0 1.7 3.4 4.6 1.7 3.4 2.0 0.8 WIND STEADINESES (MEAN %) 23.5 44.7 48.8 9.9 23.3 83.3 34.0 51.5 86.8 28.3 47.9 43.5 14.3 WIND SPEED (MEAN KNOTS) 3.4 4.7 4.1 7.1 9.0 4.8 5.0 6.6 5.3 6.0 7.1 4.6 5.6 FASTEST WIND DIRECTION 90 90 90 140 90 260 270 250 270 50 90 80 270 FASTEST WIND SPEED (KNOTS) 23 23 25 19 23 19 23 29 49 39 49 49 49 DAY 7 20 7 1 2 3 31 29 7 28 25 8 DAYS WITH SKY CLEAR (0-2)/8 17 14 14 13 10 29 30 29 30 23 15 12 236 DAYS WITH P.CLOUDY (3-6)/8 7 6 9 10 17 1 1 2 0 4 11 16 84 DAYS WITH CLOUDY (7-8)/8 7 8 8 7 4 0 0 0 0 4 4 3 45 DAYS WITH VISIBILITY =< 2 KM 2 0 0 0 0 0 0 0 0 0 0 0 2 DURATION OF SUNSHINE HOURS 188.6 176.6 203.6 230.0 236.5 362.9 357.6 341.5 320.6 264.9 201.4 199.2 3083.4 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION DEHLORAN (40796) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 32 41 N LONGITUDE 47 16 E DATA PROCESSING CENTER ELEVATION 232.0 M MEANS AND EXTREMES FOR THE YEAR 1993 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL MEAN QFE PRESSURE IN HPA 994.7 992.7 989.5 987.6 984.3 977.7 973.5 976.7 980.2 988.9 991.8 994.3 986.0 MAX. QFE PRESSURE IN HPA 1002.1 1001.9 995.6 992.3 991.4 983.5 978.0 981.4 986.5 995.5 997.6 1001.4 1002.1 DAY-HOUR 27- 6 7- 9 23- 6 15- 6 15- 6 5- 6 26- 6 18- 9 30- 6 30- 6 29- 9 26- 6 MIN. QFE PRESSURE IN HPA 983.0 981.0 980.4 980.3 975.9 972.2 968.2 972.5 974.9 983.0 983.3 989.3 968.2 DAY-HOUR 8- 3 2-15 5-12 26-15 31- 3 25-15 10-15 3-15 1-15 3-12 10-15 4-12 MEAN QNH PRESSURE IN HPA 1022.2 1020.1 1016.9 1014.9 1011.5 1004.7 1000.5 1003.7 1007.3 1016.3 1019.2 1021.8 1013.3 MAX. QNH PRESSURE IN HPA 1029.7 1029.5 1023.1 1019.7 1018.8 1010.7 1005.1 1008.6 1013.8 1023.0 1025.1 1029.0 1029.7 DAY-HOUR 27- 6 7- 9 23- 6 15- 6 15- 6 5- 6 26- 6 18- 9 30- 6 30- 6 29- 9 26- 6 MIN. QNH PRESSURE IN HPA 1010.2 1008.2 1007.5 1007.4 1002.9 999.2 995.1 999.5 1001.9 1010.2 1010.5 1016.6 995.1 DAY-HOUR 8- 3 2-15 5-12 26-15 31- 3 25-15 10-15 3-15 1-15 3-12 10-15 4-12 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY-HOUR **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY-HOUR **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** PRESSURE AT HOUR 0000 UTC. MEAN QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** PRESSURE AT HOUR 0300 UTC. MEAN QFE PRESSURE IN HPA 994.6 992.6 989.3 987.7 984.4 977.8 973.7 976.7 979.9 988.7 991.6 994.0 985.9 MAX. QFE PRESSURE IN HPA 1000.7 1001.1 994.0 991.4 990.8 982.8 977.5 980.7 984.1 993.6 996.6 999.4 1001.1 DAY 27 8 23 4 15 5 26 19 30 30 30 26 MIN. QFE PRESSURE IN HPA 983.0 983.7 983.7 983.1 975.9 972.9 969.4 973.6 976.7 984.2 983.8 990.1 969.4 DAY 8 3 5 26 31 26 10 13 2 3 11 4 MEAN QNH PRESSURE IN HPA 1022.0 1020.1 1016.6 1015.0 1011.6 1004.8 1000.7 1003.8 1007.0 1016.1 1019.0 1021.5 1013.2 MAX. QNH PRESSURE IN HPA 1028.3 1028.7 1021.4 1018.8 1018.2 1010.0 1004.6 1007.8 1011.3 1021.0 1024.1 1027.0 1028.7 DAY 27 8 23 4 15 5 26 19 30 30 30 26 MIN. QNH PRESSURE IN HPA 1010.2 1010.9 1010.9 1010.3 1002.9 999.9 996.3 1000.6 1003.8 1011.4 1011.0 1017.5 996.3 DAY 8 3 5 26 31 26 10 13 2 3 11 4 MEAN QFF PRESSURE IN HPA 1022.7 1020.5 1016.6 1014.4 1010.3 1003.0 998.6 1001.8 1005.4 1015.0 1018.8 1021.6 1012.4 MAX. QFF PRESSURE IN HPA 1028.9 1029.6 1021.9 1018.3 1017.2 1008.6 1002.3 1005.9 1010.1 1020.4 1024.6 1027.0 1029.6 DAY 27 8 23 4 15 5 26 19 30 30 30 26 MIN. QFF PRESSURE IN HPA 1010.1 1011.2 1010.4 1009.7 1001.2 997.9 994.2 998.8 1001.7 1010.1 1010.3 1017.5 994.2 DAY 8 3 5 26 31 26 10 13 2 3 11 8 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION DEHLORAN (40796) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 32 41 N LONGITUDE 47 16 E DATA PROCESSING CENTER ELEVATION 232.0 M MEANS AND EXTREMES FOR THE YEAR 1993 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 0600 UTC. MEAN QFE PRESSURE IN HPA 995.8 993.8 990.7 988.7 985.2 978.6 974.5 977.7 981.4 990.3 992.9 995.4 987.1 MAX. QFE PRESSURE IN HPA 1002.1 1001.6 995.6 992.3 991.4 983.5 978.0 981.4 986.5 995.5 997.5 1001.4 1002.1 DAY 27 7 23 15 15 5 26 19 30 30 14 26 MIN. QFE PRESSURE IN HPA 984.3 985.5 984.7 983.1 976.9 973.5 969.9 974.4 977.5 985.5 986.2 990.3 969.9 DAY 8 3 5 26 31 26 10 13 5 3 11 8 MEAN QNH PRESSURE IN HPA 1023.3 1021.3 1018.1 1016.1 1012.4 1005.7 1001.5 1004.8 1008.5 1017.6 1020.3 1022.9 1014.4 MAX. QNH PRESSURE IN HPA 1029.7 1029.2 1023.1 1019.7 1018.8 1010.7 1005.1 1008.6 1013.8 1023.0 1025.0 1029.0 1029.7 DAY 27 7 23 15 15 5 26 19 30 30 14 26 MIN. QNH PRESSURE IN HPA 1011.5 1012.8 1011.9 1010.3 1004.0 1000.5 996.8 1001.4 1004.6 1012.8 1013.5 1017.7 996.8 DAY 8 3 5 26 31 26 10 13 5 3 11 8 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** PRESSURE AT HOUR 0900 UTC. MEAN QFE PRESSURE IN HPA 995.2 993.3 990.3 988.3 984.8 978.3 974.2 977.3 981.0 989.7 992.5 994.9 986.6 MAX. QFE PRESSURE IN HPA 1001.1 1001.9 994.9 992.1 990.4 982.9 977.6 981.4 986.5 994.3 997.6 1000.8 1001.9 DAY 27 7 23 15 14 5 25 18 30 30 29 26 MIN. QFE PRESSURE IN HPA 984.0 985.1 982.2 981.5 977.2 973.5 969.4 974.0 977.3 984.5 986.2 990.5 969.4 DAY 8 3 5 26 31 26 10 13 2 3 11 8 MEAN QNH PRESSURE IN HPA 1022.7 1020.7 1017.6 1015.6 1012.0 1005.4 1001.2 1004.4 1008.1 1017.0 1019.9 1022.4 1013.9 MAX. QNH PRESSURE IN HPA 1028.7 1029.5 1022.4 1019.5 1017.8 1010.1 1004.7 1008.6 1013.8 1021.8 1025.1 1028.4 1029.5 DAY 27 7 23 15 14 5 25 18 30 30 29 26 MIN. QNH PRESSURE IN HPA 1011.2 1012.4 1009.4 1008.7 1004.3 1000.5 996.3 1001.0 1004.4 1011.7 1013.5 1017.9 996.3 DAY 8 3 5 26 31 26 10 13 2 3 11 8 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** PRESSURE AT HOUR 1200 UTC. MEAN QFE PRESSURE IN HPA 993.9 991.8 988.7 986.8 983.8 977.1 973.0 976.0 979.6 988.1 991.0 993.5 985.3 MAX. QFE PRESSURE IN HPA 998.7 1001.3 993.2 990.3 989.2 981.3 976.5 980.4 985.2 993.2 996.5 999.0 1001.3 DAY 26 7 23 3 14 5 25 18 30 30 29 26 MIN. QFE PRESSURE IN HPA 983.7 983.9 980.4 982.2 976.7 972.4 968.7 973.0 975.3 983.0 984.2 989.3 968.7 DAY 8 2 5 20 30 26 10 13 2 3 10 4 MEAN QNH PRESSURE IN HPA 1021.3 1019.2 1016.0 1014.1 1011.0 1004.2 1000.0 1003.1 1006.7 1015.4 1018.4 1021.0 1012.5 MAX. QNH PRESSURE IN HPA 1026.3 1028.9 1020.6 1017.7 1016.5 1008.5 1003.6 1007.5 1012.5 1020.6 1024.0 1026.6 1028.9 DAY 26 7 23 3 14 5 25 18 30 30 29 26 MIN. QNH PRESSURE IN HPA 1010.9 1011.1 1007.5 1009.4 1003.8 999.4 995.6 1000.0 1002.3 1010.2 1011.4 1016.6 995.6 DAY 8 2 5 20 30 26 10 13 2 3 10 4 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION DEHLORAN (40796) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 32 41 N LONGITUDE 47 16 E DATA PROCESSING CENTER ELEVATION 232.0 M MEANS AND EXTREMES FOR THE YEAR 1993 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 1500 UTC. MEAN QFE PRESSURE IN HPA 994.2 991.9 988.7 986.4 983.4 976.7 972.4 975.6 979.2 988.0 991.2 993.7 985.1 MAX. QFE PRESSURE IN HPA 999.6 1001.9 993.1 989.9 989.8 980.8 975.9 980.4 984.8 993.2 996.6 999.2 1001.9 DAY 26 7 20 4 14 5 25 18 30 30 29 26 MIN. QFE PRESSURE IN HPA 984.7 981.0 980.9 980.3 976.1 972.2 968.2 972.5 974.9 983.0 983.3 989.5 968.2 DAY 8 2 5 26 30 25 10 3 1 3 10 4 MEAN QNH PRESSURE IN HPA 1021.6 1019.3 1016.0 1013.7 1010.6 1003.7 999.4 1002.6 1006.3 1015.3 1018.6 1021.2 1012.4 MAX. QNH PRESSURE IN HPA 1027.2 1029.5 1020.5 1017.3 1017.2 1008.0 1002.9 1007.5 1012.0 1020.6 1024.1 1026.8 1029.5 DAY 26 7 20 4 14 5 25 18 30 30 29 26 MIN. QNH PRESSURE IN HPA 1011.9 1008.2 1008.1 1007.4 1003.1 999.2 995.1 999.5 1001.9 1010.2 1010.5 1016.8 995.1 DAY 8 2 5 26 30 25 10 3 1 3 10 4 MEAN QFF PRESSURE IN HPA 1022.3 1019.7 1015.9 1013.1 1009.4 1001.9 997.2 1000.6 1004.6 1014.3 1018.4 1021.2 1011.6 MAX. QFF PRESSURE IN HPA 1027.7 1030.3 1020.8 1016.8 1016.4 1006.4 1000.8 1005.7 1010.8 1019.9 1024.8 1026.8 1030.3 DAY 26 7 23 4 14 5 25 18 30 30 29 26 MIN. QFF PRESSURE IN HPA 1012.0 1008.1 1007.6 1007.0 1001.3 997.2 992.9 997.4 999.9 1008.9 1010.1 1017.2 992.9 DAY 8 2 5 26 30 25 10 3 1 3 10 4 PRESSURE AT HOUR 1800 UTC. MEAN QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** PRESSURE AT HOUR 2100 UTC. MEAN QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION DEHLORAN (40796) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 32 41 N LONGITUDE 47 16 E DATA PROCESSING CENTER ELEVATION 232.0 M MEANS AND EXTREMES FOR THE YEAR 1994 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AIR TEMPERATURE (C) 15.2 14.8 20.1 28.3 33.2 38.2 39.2 39.0 36.0 29.2 19.6 11.2 27.0 MINIMUN AIR TEMPERATURE (C) 10.2 8.6 13.1 20.3 24.3 29.3 29.8 29.0 27.5 22.4 14.9 6.9 19.7 DAYS WITH MINIMUM TEMP. >=21 0 0 0 12 23 30 31 31 30 25 1 0 183 DAYS WITH MINIMUM TEMP. <=-4 0 0 0 0 0 0 0 0 0 0 0 0 0 DAYS WITH FREEZING MIN.<= 0 0 0 0 0 0 0 0 0 0 0 0 0 0 TEMPERATURE RECORDS LOWEST(C) 6.5 3.0 7.0 14.0 17.5 24.0 27.5 25.0 24.5 17.5 8.5 1.8 1.8 DAY 18 4 16 3 7 19 19 3 23 23 9 8 MAXIMUM AIR TEMPERATURE (C) 18.7 18.8 24.1 32.8 37.6 42.9 44.8 45.0 40.9 33.5 23.2 15.0 31.4 DAYS WITH MAXIMUM TEMP. >=30 0 0 1 25 30 30 31 31 30 26 2 0 206 DAYS WITH MAXIMUM TEMP. <= 0 0 0 0 0 0 0 0 0 0 0 0 0 0 TEMPERATURE RECORDS HIGHEST(C) 24.8 24.6 30.8 38.8 46.6 48.6 47.6 48.6 43.6 37.2 31.0 18.4 48.6 DAY 1 27 31 22 31 11 12 9 2 5 3 1 DIF. BETWEEN (MAX.-MIN.) (C) 8.5 10.2 11.0 12.5 13.3 13.6 15.0 16.0 13.4 11.1 8.3 8.1 11.7 MEAN DAILY TEMP. (MDT) (C) 14.5 13.7 18.6 26.6 30.9 36.1 37.3 37.0 34.2 27.9 19.0 10.9 25.6 COOLING DEG. DAYS(BASE 21 0C) 1.3 0.0 7.2 168.5 307.6 452.7 506.3 496.6 395.9 214.8 16.7 0.0 2567.7 HEATING DEG. DAYS(BASE 18 0C) 116.7 120.5 24.7 0.0 0.0 0.0 0.0 0.0 0.0 0.0 20.8 218.8 501.4 DEWPOINT (MEAN C) 6.2 2.5 4.3 7.4 7.8 5.1 8.9 5.9 6.9 9.9 11.3 5.3 6.8 MIXING RATIO (G/KG) 6.12 4.86 5.47 7.05 7.44 5.88 7.60 6.26 6.50 8.42 8.85 5.84 6.69 VAPOUR PRESSURE (HPA) 9.67 7.67 8.61 11.03 11.59 9.13 11.72 9.69 10.15 13.18 13.88 9.25 10.46 SATURATION DEF. (HPA) 8.06 9.68 15.72 29.14 41.72 60.01 61.29 62.88 51.01 28.61 9.63 4.33 31.84 RELATIVE HUMIDITY (MEAN %) 58 48 39 31 25 14 17 15 18 35 62 69 36 RELATIVE HUMIDITY (MAX. %) 74 68 56 45 35 21 27 22 26 46 81 84 49 RELATIVE HUMIDITY (MIN. %) 44 31 26 22 18 10 12 10 13 28 48 54 26 RELATIVE HUMIDITY (MEAN% 03UTC) 69 65 54 43 34 21 26 22 26 44 75 80 47 RELATIVE HUMIDITY (MEAN% 09UTC) 53 40 32 26 22 12 15 13 14 31 54 63 31 RELATIVE HUMIDITY (MEAN% 15UTC) 55 45 32 26 21 12 14 11 15 34 64 69 33 RH=0 => RELATIVE HUMIDITY < 0.5% AMOUNT OF PRECIPITATION MM. 65.2 54.8 8.1 30.2 2.7 0.0 0.0 0.0 0.0 9.6 174.4 57.0 402.0 DAYS WITH PRECIPITATION >=10 1 2 0 1 0 0 0 0 0 0 5 3 12 DAYS WITH PRECIPITATION >= 5 3 3 1 3 0 0 0 0 0 0 7 4 21 DAYS WITH PRECIPITATION >= 1 9 4 2 4 2 0 0 0 0 5 11 8 45 DAYS WITH PRECIPITATION 10 5 4 5 4 0 0 0 0 7 12 10 57 GREATEST DAILY PRECIPITATION 33.0 34.0 5.0 12.1 1.0 0.0 0.0 0.0 0.0 3.0 74.0 16.0 74.0 DAY 16 1 11 1 6 ** ** ** ** 30 23 16 DAY WITH THUNDER STORM 0 0 0 0 0 0 0 0 0 0 3 2 5 DAYS WITH SNOW OR SLEET 0 0 0 0 0 0 0 0 0 0 0 0 0 DAYS WITH DUST 1 2 6 13 13 10 19 18 12 6 2 1 103 WIND DIRECTION (PREVAILING) 90 270 90 270 270 270 270 270 270 270 90 90 270 PREVAILING WIND SPEED(KNOTS) 28.0 9.4 15.8 7.2 12.3 12.6 13.4 13.5 10.9 6.2 16.6 10.9 10.5 PREVAILING WIND PERCENT 32.5 25.7 20.0 14.7 21.9 35.3 27.7 25.2 16.7 21.9 32.0 11.0 18.9 CALMS PERCENT OF WIND 50.0 31.4 44.5 36.7 39.4 37.3 37.4 47.7 46.7 24.5 38.7 55.5 40.9 NO. OF WIND OBSERVATION 154 140 155 150 155 150 155 155 150 155 150 155 1824 VECTOR WIND DIRECTION (MEAN) 92 121 112 152 250 275 258 264 232 256 97 116 150 VECTOR WIND MAGNITUDE(KNOTS) 8.6 0.9 3.5 0.6 1.5 4.9 3.7 3.6 1.4 0.6 4.9 1.1 0.6 WIND STEADINESES (MEAN %) 79.6 13.4 58.3 11.5 24.6 75.4 68.5 76.6 31.1 14.0 70.0 37.9 10.3 WIND SPEED (MEAN KNOTS) 10.8 6.7 6.0 5.2 6.1 6.5 5.4 4.7 4.5 4.3 7.0 2.9 5.8 FASTEST WIND DIRECTION 90 270 90 90 90 270 270 270 280 280 270 80 90 FASTEST WIND SPEED (KNOTS) 49 35 29 33 27 29 27 23 31 23 43 29 49 DAY 2 1 1 1 4 29 12 1 27 30 4 15 DAYS WITH SKY CLEAR (0-2)/8 13 15 14 16 22 30 31 31 23 16 10 15 236 DAYS WITH P.CLOUDY (3-6)/8 8 10 13 7 7 0 0 0 7 11 10 9 82 DAYS WITH CLOUDY (7-8)/8 10 3 4 7 2 0 0 0 0 4 10 7 47 DAYS WITH VISIBILITY =< 2 KM 0 0 3 3 1 2 10 1 2 0 3 5 30 DURATION OF SUNSHINE HOURS ****** ****** 216.2 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION DEHLORAN (40796) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 32 41 N LONGITUDE 47 16 E DATA PROCESSING CENTER ELEVATION 232.0 M MEANS AND EXTREMES FOR THE YEAR 1994 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL MEAN QFE PRESSURE IN HPA 992.2 991.0 989.2 985.9 983.0 975.3 971.5 973.8 982.3 988.8 991.1 996.4 985.0 MAX. QFE PRESSURE IN HPA 1001.3 997.2 996.0 992.9 990.3 979.9 973.9 978.5 991.0 994.3 998.1 1002.7 1002.7 DAY-HOUR 28- 6 26- 6 18- 6 16- 6 8- 6 5- 6 6- 6 15- 6 24- 6 23- 6 10- 6 7- 6 MIN. QFE PRESSURE IN HPA 981.6 981.5 976.4 981.1 975.4 971.7 969.2 969.8 972.6 983.7 981.8 983.0 969.2 DAY-HOUR 23-12 12- 3 11-15 25-15 31-15 27-15 22- 3 1-15 2-15 6-15 25-12 3-15 MEAN QNH PRESSURE IN HPA 1019.6 1018.4 1016.6 1013.2 1010.2 1002.3 998.5 1000.8 1009.5 1016.1 1018.4 1023.9 1012.3 MAX. QNH PRESSURE IN HPA 1028.9 1024.7 1023.5 1020.3 1017.7 1007.0 1000.9 1005.6 1018.4 1021.8 1025.6 1030.3 1030.3 DAY-HOUR 28- 6 26- 6 18- 6 16- 6 8- 6 5- 6 6- 6 15- 6 24- 6 23- 6 10- 6 7- 6 MIN. QNH PRESSURE IN HPA 1008.8 1008.7 1003.5 1008.3 1002.4 998.6 996.1 996.7 999.6 1010.9 1009.0 1010.2 996.1 DAY-HOUR 23-12 12- 3 11-15 25-15 31-15 27-15 22- 3 1-15 2-15 6-15 25-12 3-15 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY-HOUR **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY-HOUR **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** PRESSURE AT HOUR 0000 UTC. MEAN QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** PRESSURE AT HOUR 0300 UTC. MEAN QFE PRESSURE IN HPA 992.0 990.7 989.1 986.0 983.0 975.2 971.5 973.6 982.1 988.5 991.2 996.1 984.9 MAX. QFE PRESSURE IN HPA 999.1 996.1 995.1 991.2 988.5 978.8 973.5 977.1 989.3 993.1 996.2 1001.6 1001.6 DAY 28 26 18 16 8 17 1 15 24 20 10 7 MIN. QFE PRESSURE IN HPA 984.5 981.5 979.8 982.5 978.3 972.4 969.2 969.9 973.3 983.8 985.3 986.0 969.2 DAY 16 12 12 13 31 23 22 10 1 6 17 3 MEAN QNH PRESSURE IN HPA 1019.4 1018.1 1016.4 1013.2 1010.2 1002.2 998.5 1000.6 1009.3 1015.8 1018.6 1023.6 1012.2 MAX. QNH PRESSURE IN HPA 1026.7 1023.6 1022.6 1018.6 1015.8 1005.9 1000.5 1004.2 1016.6 1020.5 1023.7 1029.2 1029.2 DAY 28 26 18 16 8 17 1 15 24 20 10 7 MIN. QNH PRESSURE IN HPA 1011.7 1008.7 1006.9 1009.7 1005.4 999.4 996.1 996.8 1000.3 1011.0 1012.6 1013.3 996.1 DAY 16 12 12 13 31 23 22 10 1 6 17 3 MEAN QFF PRESSURE IN HPA 1019.6 1018.4 1016.2 1012.2 1009.0 1000.4 996.5 998.7 1007.6 1014.7 1018.3 1024.2 1011.3 MAX. QFF PRESSURE IN HPA 1027.3 1024.0 1022.5 1017.5 1014.9 1004.2 998.7 1002.2 1015.2 1019.6 1023.9 1030.4 1030.4 DAY 28 4 18 16 8 5 1 15 24 20 10 7 MIN. QFF PRESSURE IN HPA 1011.9 1008.8 1006.8 1008.3 1003.4 997.4 994.3 994.9 998.4 1009.7 1012.4 1013.2 994.3 DAY 16 12 12 26 31 23 22 10 1 6 17 3 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION DEHLORAN (40796) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 32 41 N LONGITUDE 47 16 E DATA PROCESSING CENTER ELEVATION 232.0 M MEANS AND EXTREMES FOR THE YEAR 1994 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 0600 UTC. MEAN QFE PRESSURE IN HPA 993.4 992.1 990.6 987.0 984.2 976.2 972.4 974.9 983.4 990.0 992.3 997.3 986.2 MAX. QFE PRESSURE IN HPA 1001.3 997.2 996.0 992.9 990.3 979.9 973.9 978.5 991.0 994.3 998.1 1002.7 1002.7 DAY 28 26 18 16 8 5 6 15 24 23 10 7 MIN. QFE PRESSURE IN HPA 983.3 984.4 981.7 981.2 978.5 973.4 970.7 971.3 974.6 985.5 986.7 985.8 970.7 DAY 16 12 12 30 31 23 12 10 1 6 25 3 MEAN QNH PRESSURE IN HPA 1020.9 1019.5 1018.0 1014.3 1011.4 1003.3 999.4 1001.9 1010.6 1017.4 1019.7 1024.9 1013.4 MAX. QNH PRESSURE IN HPA 1028.9 1024.7 1023.5 1020.3 1017.7 1007.0 1000.9 1005.6 1018.4 1021.8 1025.6 1030.3 1030.3 DAY 28 26 18 16 8 5 6 15 24 23 10 7 MIN. QNH PRESSURE IN HPA 1010.5 1011.6 1008.9 1008.4 1005.6 1000.4 997.6 998.2 1001.6 1012.8 1014.0 1013.1 997.6 DAY 16 12 12 30 31 23 12 10 1 6 25 3 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** PRESSURE AT HOUR 0900 UTC. MEAN QFE PRESSURE IN HPA 992.9 991.8 990.2 986.8 983.8 976.0 972.2 974.6 983.1 989.4 991.4 997.1 985.8 MAX. QFE PRESSURE IN HPA 1000.8 996.9 995.6 992.4 989.6 979.8 973.5 978.2 990.6 994.0 997.3 1002.3 1002.3 DAY 28 26 18 16 8 5 4 15 24 22 10 6 MIN. QFE PRESSURE IN HPA 982.9 985.3 982.3 983.0 977.8 973.3 970.7 971.0 974.6 985.0 984.0 984.7 970.7 DAY 16 28 11 30 31 23 12 10 1 6 25 3 MEAN QNH PRESSURE IN HPA 1020.3 1019.2 1017.6 1014.1 1011.0 1003.0 999.1 1001.6 1010.3 1016.8 1018.8 1024.6 1013.0 MAX. QNH PRESSURE IN HPA 1028.4 1024.4 1023.1 1019.8 1017.0 1006.9 1000.5 1005.3 1018.0 1021.4 1024.8 1029.9 1029.9 DAY 28 26 18 16 8 5 4 15 24 22 10 6 MIN. QNH PRESSURE IN HPA 1010.1 1012.6 1009.5 1010.2 1004.9 1000.3 997.6 997.9 1001.6 1012.2 1011.2 1011.9 997.6 DAY 16 28 11 30 31 23 12 10 1 6 25 3 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** PRESSURE AT HOUR 1200 UTC. MEAN QFE PRESSURE IN HPA 991.3 990.1 988.3 985.2 982.4 974.9 971.1 973.3 981.5 988.1 990.2 995.9 984.4 MAX. QFE PRESSURE IN HPA 998.9 995.1 993.5 991.0 988.4 978.4 972.7 976.7 988.8 993.5 996.1 1001.2 1001.2 DAY 28 25 18 16 14 5 6 15 23 31 10 6 MIN. QFE PRESSURE IN HPA 981.6 982.9 979.1 981.1 976.0 972.5 969.4 969.8 972.9 983.9 981.8 983.3 969.4 DAY 23 11 11 26 31 22 12 10 2 6 25 3 MEAN QNH PRESSURE IN HPA 1018.7 1017.5 1015.6 1012.5 1009.6 1001.9 998.0 1000.3 1008.7 1015.4 1017.6 1023.4 1011.6 MAX. QNH PRESSURE IN HPA 1026.5 1022.6 1020.9 1018.4 1015.7 1005.5 999.7 1003.8 1016.1 1020.9 1023.6 1028.8 1028.8 DAY 28 25 18 16 14 5 6 15 23 31 10 6 MIN. QNH PRESSURE IN HPA 1008.8 1010.1 1006.2 1008.3 1003.0 999.5 996.3 996.7 999.9 1011.1 1009.0 1010.5 996.3 DAY 23 11 11 26 31 22 12 10 2 6 25 3 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION DEHLORAN (40796) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 32 41 N LONGITUDE 47 16 E DATA PROCESSING CENTER ELEVATION 232.0 M MEANS AND EXTREMES FOR THE YEAR 1994 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 1500 UTC. MEAN QFE PRESSURE IN HPA 991.5 990.2 988.1 984.6 981.7 974.2 970.5 972.6 981.3 987.9 990.3 995.8 984.1 MAX. QFE PRESSURE IN HPA 998.7 995.1 993.5 990.4 987.2 977.8 972.1 975.7 988.5 993.1 996.7 1001.7 1001.7 DAY 27 25 18 16 14 17 5 15 23 31 10 6 MIN. QFE PRESSURE IN HPA 981.6 982.5 976.4 981.1 975.4 971.7 969.3 969.8 972.6 983.7 982.6 983.0 969.3 DAY 23 11 11 25 31 27 11 1 2 6 25 3 MEAN QNH PRESSURE IN HPA 1018.8 1017.6 1015.4 1011.8 1008.9 1001.2 997.4 999.6 1008.5 1015.2 1017.7 1023.3 1011.3 MAX. QNH PRESSURE IN HPA 1026.3 1022.6 1020.9 1017.8 1014.5 1004.9 999.1 1002.7 1015.8 1020.5 1024.2 1029.3 1029.3 DAY 27 25 18 16 14 17 5 15 23 31 10 6 MIN. QNH PRESSURE IN HPA 1008.8 1009.7 1003.5 1008.3 1002.4 998.6 996.2 996.7 999.6 1010.9 1009.8 1010.2 996.2 DAY 23 11 11 25 31 27 11 1 2 6 25 3 MEAN QFF PRESSURE IN HPA 1019.0 1017.9 1015.1 1010.8 1007.6 999.3 995.4 997.7 1006.8 1014.1 1017.4 1023.9 1010.4 MAX. QFF PRESSURE IN HPA 1026.8 1022.9 1020.7 1016.9 1013.5 1002.8 997.1 1000.8 1014.3 1019.9 1024.4 1030.3 1030.3 DAY 27 3 18 16 17 17 5 15 24 31 10 6 MIN. QFF PRESSURE IN HPA 1008.9 1009.8 1003.1 1006.6 1000.4 996.7 994.1 994.9 997.9 1009.6 1009.5 1010.2 994.1 DAY 23 11 11 25 31 27 11 10 2 6 25 3 PRESSURE AT HOUR 1800 UTC. MEAN QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** PRESSURE AT HOUR 2100 UTC. MEAN QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION DEHLORAN (40796) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 32 41 N LONGITUDE 47 16 E DATA PROCESSING CENTER ELEVATION 232.0 M MEANS AND EXTREMES FOR THE YEAR 1995 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AIR TEMPERATURE (C) 13.6 15.2 19.4 24.5 33.6 38.3 39.5 40.3 34.9 28.4 21.1 13.6 26.9 MINIMUN AIR TEMPERATURE (C) 8.4 9.7 12.6 17.0 25.3 29.4 30.5 30.1 25.5 19.7 13.6 8.5 19.2 DAYS WITH MINIMUM TEMP. >=21 0 0 0 3 26 30 31 31 29 8 2 0 160 DAYS WITH MINIMUM TEMP. <=-4 0 0 0 0 0 0 0 0 0 0 0 0 0 DAYS WITH FREEZING MIN.<= 0 0 0 0 0 0 0 0 0 0 0 0 0 0 TEMPERATURE RECORDS LOWEST(C) 4.0 6.5 8.2 12.0 17.2 26.0 27.2 27.6 20.4 15.0 3.0 5.2 3.0 DAY 23 9 28 6 9 6 6 24 22 5 27 17 MAXIMUM AIR TEMPERATURE (C) 17.8 19.3 23.6 28.6 37.5 42.5 44.8 46.0 40.0 33.8 26.0 18.3 31.5 DAYS WITH MAXIMUM TEMP. >=30 0 0 0 13 31 30 31 31 30 28 5 0 199 DAYS WITH MAXIMUM TEMP. <= 0 0 0 0 0 0 0 0 0 0 0 0 0 0 TEMPERATURE RECORDS HIGHEST(C) 21.8 23.0 29.6 34.5 43.0 47.8 47.6 49.0 45.2 40.0 32.0 22.0 49.0 DAY 30 3 31 30 23 20 29 1 1 1 1 3 DIF. BETWEEN (MAX.-MIN.) (C) 9.4 9.6 11.0 11.6 12.2 13.1 14.3 15.9 14.5 14.1 12.4 9.8 12.3 MEAN DAILY TEMP. (MDT) (C) 13.1 14.5 18.1 22.8 31.4 35.9 37.6 38.0 32.8 26.7 19.8 13.4 25.3 COOLING DEG. DAYS(BASE 21 0C) 0.0 0.0 0.9 61.8 322.5 448.1 515.6 527.9 352.6 172.9 36.2 0.0 2438.6 HEATING DEG. DAYS(BASE 18 0C) 152.4 97.4 19.9 0.0 0.0 0.0 0.0 0.0 0.0 0.0 41.8 142.9 454.3 DEWPOINT (MEAN C) 7.2 7.6 6.8 7.8 14.4 9.4 8.9 3.6 7.1 2.6 2.6 5.5 6.9 MIXING RATIO (G/KG) 6.56 6.72 6.47 7.02 11.26 8.06 7.89 5.29 6.72 5.00 5.38 5.89 6.85 VAPOUR PRESSURE (HPA) 10.37 10.58 10.17 11.00 17.43 12.47 12.13 8.21 10.47 7.87 8.46 9.33 10.71 SATURATION DEF. (HPA) 5.64 7.03 12.97 20.73 36.48 56.47 61.82 69.58 47.83 32.44 18.14 6.58 31.31 RELATIVE HUMIDITY (MEAN %) 68 63 47 38 34 19 18 12 20 22 33 62 36 RELATIVE HUMIDITY (MAX. %) 83 81 66 59 48 29 29 19 28 32 45 79 50 RELATIVE HUMIDITY (MIN. %) 53 45 34 26 26 14 11 7 14 14 23 47 26 RELATIVE HUMIDITY (MEAN% 03UTC) 81 78 64 56 46 28 26 19 28 32 44 73 48 RELATIVE HUMIDITY (MEAN% 09UTC) 62 56 42 31 29 16 15 9 17 17 28 54 31 RELATIVE HUMIDITY (MEAN% 15UTC) 65 58 43 34 31 18 13 9 17 20 29 57 33 RH=0 => RELATIVE HUMIDITY < 0.5% AMOUNT OF PRECIPITATION MM. 6.4 59.2 27.4 44.5 10.6 0.0 0.0 0.0 0.0 7.0 0.2 14.6 169.9 DAYS WITH PRECIPITATION >=10 0 2 1 2 0 0 0 0 0 0 0 1 6 DAYS WITH PRECIPITATION >= 5 0 3 1 3 0 0 0 0 0 1 0 1 9 DAYS WITH PRECIPITATION >= 1 2 5 1 4 3 0 0 0 0 1 0 3 19 DAYS WITH PRECIPITATION 3 8 6 11 5 0 0 0 0 1 1 5 40 GREATEST DAILY PRECIPITATION 3.2 32.0 26.0 20.0 3.4 0.0 0.0 0.0 0.0 7.0 0.2 10.0 32.0 DAY 17 5 13 11 4 ** ** ** ** 22 3 12 DAY WITH THUNDER STORM 0 1 1 3 0 0 0 0 0 0 0 0 5 DAYS WITH SNOW OR SLEET 0 0 0 0 0 0 0 0 0 0 0 0 0 DAYS WITH DUST 2 1 0 7 6 8 21 17 10 5 1 0 78 WIND DIRECTION (PREVAILING) 90 90 90 90 90 270 270 270 270 270 90 270 270 PREVAILING WIND SPEED(KNOTS) 13.0 12.4 14.3 15.6 10.7 10.6 12.7 11.3 9.6 6.8 11.3 4.4 8.9 PREVAILING WIND PERCENT 13.5 14.3 15.5 21.3 15.5 32.7 32.3 21.9 22.0 17.4 14.7 10.3 17.5 CALMS PERCENT OF WIND 59.4 45.0 39.4 28.0 30.3 26.7 35.5 49.7 55.3 61.3 50.7 71.4 46.4 NO. OF WIND OBSERVATION 155 140 155 150 155 150 155 155 150 155 150 175 1845 VECTOR WIND DIRECTION (MEAN) 105 115 119 110 102 263 269 257 256 218 118 223 211 VECTOR WIND MAGNITUDE(KNOTS) 1.2 1.8 1.7 2.9 1.4 3.8 4.2 2.5 2.7 0.7 1.7 0.3 0.6 WIND STEADINESES (MEAN %) 41.4 46.2 36.2 42.0 25.0 61.3 67.7 62.5 75.0 26.9 43.6 25.0 14.0 WIND SPEED (MEAN KNOTS) 2.9 3.9 4.7 6.9 5.6 6.2 6.2 4.0 3.6 2.6 3.9 1.2 4.3 FASTEST WIND DIRECTION 90 100 90 90 90 270 280 270 270 280 270 120 90 FASTEST WIND SPEED (KNOTS) 21 25 29 33 29 23 25 25 27 23 21 16 33 DAY 17 15 16 3 2 12 2 21 4 12 11 11 DAYS WITH SKY CLEAR (0-2)/8 19 15 17 14 20 28 31 31 30 27 22 13 267 DAYS WITH P.CLOUDY (3-6)/8 6 7 7 6 8 2 0 0 0 4 6 14 60 DAYS WITH CLOUDY (7-8)/8 6 6 7 10 3 0 0 0 0 0 2 4 38 DAYS WITH VISIBILITY =< 2 KM 2 0 0 1 1 1 0 0 0 0 0 1 6 DURATION OF SUNSHINE HOURS ****** ****** ****** ****** ****** ****** ****** ****** 298.2 293.2 235.8 206.4 ****** ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION DEHLORAN (40796) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 32 41 N LONGITUDE 47 16 E DATA PROCESSING CENTER ELEVATION 232.0 M MEANS AND EXTREMES FOR THE YEAR 1995 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL MEAN QFE PRESSURE IN HPA 995.1 991.2 989.8 986.4 983.1 977.1 971.5 974.2 981.2 987.4 991.6 994.9 985.3 MAX. QFE PRESSURE IN HPA 999.4 997.8 996.4 992.5 989.9 984.4 975.5 979.0 985.6 995.0 998.7 1000.5 1000.5 DAY-HOUR 19- 6 10- 6 3- 6 13- 6 4- 6 1- 9 4- 6 12- 9 13- 6 25- 6 30- 6 19- 6 MIN. QFE PRESSURE IN HPA 988.8 983.9 983.4 981.1 978.4 971.9 965.2 968.4 974.9 981.6 984.3 986.7 965.2 DAY-HOUR 11-12 23-12 14-15 19- 3 23-15 24-15 20-15 3-15 4-15 11-15 6-12 11-12 MEAN QNH PRESSURE IN HPA 1022.5 1018.6 1017.2 1013.6 1010.3 1004.2 998.5 1001.2 1008.4 1014.7 1019.0 1022.4 1012.5 MAX. QNH PRESSURE IN HPA 1027.0 1025.3 1023.9 1019.9 1017.3 1011.6 1002.5 1006.1 1012.9 1022.5 1026.3 1028.1 1028.1 DAY-HOUR 19- 6 10- 6 3- 6 13- 6 4- 6 1- 9 4- 6 12- 9 13- 6 25- 6 30- 6 19- 6 MIN. QNH PRESSURE IN HPA 1016.1 1011.1 1010.6 1008.3 1005.5 998.9 992.0 995.3 1001.9 1008.8 1011.5 1014.0 992.0 DAY-HOUR 11-12 23-12 14-15 19- 3 23-15 24-15 20-15 3-15 4-15 11-15 6-12 11-12 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY-HOUR **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY-HOUR **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** PRESSURE AT HOUR 0000 UTC. MEAN QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** PRESSURE AT HOUR 0300 UTC. MEAN QFE PRESSURE IN HPA 994.9 991.0 989.6 986.1 983.3 977.3 971.6 973.9 981.1 987.1 991.4 994.9 985.2 MAX. QFE PRESSURE IN HPA 998.0 995.9 995.3 991.0 989.4 982.7 974.7 977.5 984.7 993.7 996.5 999.3 999.3 DAY 19 10 3 6 4 3 4 25 22 25 30 19 MIN. QFE PRESSURE IN HPA 989.1 984.0 985.3 981.1 979.5 973.2 967.2 970.3 976.1 981.9 985.2 989.0 967.2 DAY 12 23 17 19 23 20 21 4 2 12 7 12 MEAN QNH PRESSURE IN HPA 1022.4 1018.4 1017.0 1013.4 1010.5 1004.3 998.5 1000.9 1008.2 1014.4 1018.7 1022.3 1012.4 MAX. QNH PRESSURE IN HPA 1025.5 1023.4 1022.8 1018.4 1016.7 1009.9 1001.7 1004.6 1011.9 1021.1 1024.0 1026.9 1026.9 DAY 19 10 3 6 4 3 4 25 22 25 30 19 MIN. QNH PRESSURE IN HPA 1016.4 1011.2 1012.6 1008.3 1006.6 1000.2 994.0 997.2 1003.1 1009.1 1012.5 1016.3 994.0 DAY 12 23 17 19 23 20 21 4 2 12 7 12 MEAN QFF PRESSURE IN HPA 1022.7 1018.6 1016.8 1012.7 1009.0 1002.5 996.5 998.9 1006.7 1013.5 1018.5 1022.7 1011.6 MAX. QFF PRESSURE IN HPA 1026.1 1024.0 1022.8 1018.3 1015.3 1008.3 999.6 1002.7 1010.9 1020.4 1024.3 1027.2 1027.2 DAY 19 10 3 6 4 3 3 25 22 25 30 19 MIN. QFF PRESSURE IN HPA 1016.2 1011.2 1012.2 1007.1 1004.5 997.7 992.0 995.0 1001.4 1007.7 1011.8 1016.5 992.0 DAY 12 5 17 19 23 20 21 4 2 12 7 12 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION DEHLORAN (40796) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 32 41 N LONGITUDE 47 16 E DATA PROCESSING CENTER ELEVATION 232.0 M MEANS AND EXTREMES FOR THE YEAR 1995 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 0600 UTC. MEAN QFE PRESSURE IN HPA 996.1 992.3 991.0 987.4 984.4 978.1 972.4 975.2 982.2 988.7 992.7 995.9 986.4 MAX. QFE PRESSURE IN HPA 999.4 997.8 996.4 992.5 989.9 983.2 975.5 978.9 985.6 995.0 998.7 1000.5 1000.5 DAY 19 10 3 13 4 3 4 12 13 25 30 19 MIN. QFE PRESSURE IN HPA 989.7 984.3 986.6 982.4 980.1 973.5 967.8 971.3 976.5 983.4 986.9 990.4 967.8 DAY 12 23 17 23 23 21 21 3 1 12 6 12 MEAN QNH PRESSURE IN HPA 1023.6 1019.7 1018.4 1014.7 1011.6 1005.2 999.4 1002.3 1009.3 1016.1 1020.2 1023.4 1013.7 MAX. QNH PRESSURE IN HPA 1027.0 1025.3 1023.9 1019.9 1017.3 1010.4 1002.5 1006.0 1012.9 1022.5 1026.3 1028.1 1028.1 DAY 19 10 3 13 4 3 4 12 13 25 30 19 MIN. QNH PRESSURE IN HPA 1017.1 1011.5 1013.9 1009.6 1007.2 1000.5 994.7 998.2 1003.6 1010.6 1014.2 1017.8 994.7 DAY 12 23 17 23 23 21 21 3 1 12 6 12 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** PRESSURE AT HOUR 0900 UTC. MEAN QFE PRESSURE IN HPA 995.7 992.0 990.7 986.9 983.8 977.8 972.3 975.0 981.8 988.0 992.1 995.4 986.0 MAX. QFE PRESSURE IN HPA 999.3 997.7 996.2 992.0 988.2 984.4 975.4 979.0 985.2 993.6 997.6 999.9 999.9 DAY 19 10 3 6 7 1 4 12 12 24 30 19 MIN. QFE PRESSURE IN HPA 990.3 984.3 985.5 982.1 980.1 973.5 967.5 970.6 976.0 984.0 986.1 988.9 967.5 DAY 12 23 14 23 23 21 20 3 1 12 6 11 MEAN QNH PRESSURE IN HPA 1023.1 1019.4 1018.1 1014.2 1011.0 1004.9 999.2 1002.0 1009.0 1015.4 1019.5 1022.9 1013.2 MAX. QNH PRESSURE IN HPA 1026.9 1025.2 1023.7 1019.4 1015.5 1011.6 1002.4 1006.1 1012.5 1021.0 1025.1 1027.5 1027.5 DAY 19 10 3 6 7 1 4 12 12 24 30 19 MIN. QNH PRESSURE IN HPA 1017.7 1011.5 1012.8 1009.3 1007.2 1000.5 994.4 997.5 1003.0 1011.2 1013.4 1016.2 994.4 DAY 12 23 14 23 23 21 20 3 1 12 6 11 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** PRESSURE AT HOUR 1200 UTC. MEAN QFE PRESSURE IN HPA 994.2 990.4 989.0 985.9 982.5 976.6 971.1 973.7 980.6 986.7 990.7 994.0 984.6 MAX. QFE PRESSURE IN HPA 997.9 995.7 994.6 991.4 987.4 982.8 974.5 977.5 984.1 992.3 995.8 998.6 998.6 DAY 19 10 3 12 7 1 4 12 12 24 30 19 MIN. QFE PRESSURE IN HPA 988.8 983.9 983.9 982.7 978.9 972.8 966.0 969.2 975.3 982.4 984.3 986.7 966.0 DAY 11 23 14 24 23 24 20 3 4 11 6 11 MEAN QNH PRESSURE IN HPA 1021.7 1017.8 1016.3 1013.2 1009.7 1003.7 998.0 1000.7 1007.8 1013.9 1018.0 1021.4 1011.9 MAX. QNH PRESSURE IN HPA 1025.4 1023.2 1022.1 1018.8 1014.7 1010.0 1001.5 1004.6 1011.3 1019.7 1023.3 1026.2 1026.2 DAY 19 10 3 12 7 1 4 12 12 24 30 19 MIN. QNH PRESSURE IN HPA 1016.1 1011.1 1011.1 1009.9 1006.0 999.8 992.8 996.1 1002.3 1009.6 1011.5 1014.0 992.8 DAY 11 23 14 24 23 24 20 3 4 11 6 11 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION DEHLORAN (40796) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 32 41 N LONGITUDE 47 16 E DATA PROCESSING CENTER ELEVATION 232.0 M MEANS AND EXTREMES FOR THE YEAR 1995 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 1500 UTC. MEAN QFE PRESSURE IN HPA 994.4 990.5 988.8 985.5 981.7 975.8 970.3 973.2 980.4 986.6 991.0 994.3 984.4 MAX. QFE PRESSURE IN HPA 998.1 995.9 994.2 991.5 987.8 981.1 973.7 976.8 984.6 992.8 996.9 999.0 999.0 DAY 19 10 3 12 7 1 4 12 12 24 30 19 MIN. QFE PRESSURE IN HPA 988.9 985.8 983.4 981.3 978.4 971.9 965.2 968.4 974.9 981.6 984.7 988.7 965.2 DAY 11 23 14 18 23 24 20 3 4 11 6 11 MEAN QNH PRESSURE IN HPA 1021.9 1017.8 1016.1 1012.8 1008.9 1002.9 997.2 1000.1 1007.5 1013.9 1018.4 1021.7 1011.6 MAX. QNH PRESSURE IN HPA 1025.6 1023.4 1021.7 1018.9 1015.1 1008.3 1000.7 1003.9 1011.8 1020.2 1024.4 1026.6 1026.6 DAY 19 10 3 12 7 1 4 12 12 24 30 19 MIN. QNH PRESSURE IN HPA 1016.2 1013.1 1010.6 1008.5 1005.5 998.9 992.0 995.3 1001.9 1008.8 1011.9 1016.0 992.0 DAY 11 23 14 18 23 24 20 3 4 11 6 11 MEAN QFF PRESSURE IN HPA 1022.2 1018.0 1015.9 1012.1 1007.4 1001.0 995.2 998.2 1006.0 1013.0 1018.1 1022.1 1010.8 MAX. QFF PRESSURE IN HPA 1026.2 1024.0 1021.6 1018.2 1014.1 1006.6 998.5 1002.0 1010.2 1019.4 1024.8 1026.9 1026.9 DAY 19 10 3 12 7 1 3 12 12 24 30 19 MIN. QFF PRESSURE IN HPA 1016.0 1013.2 1010.5 1007.6 1003.3 996.6 989.9 993.1 1000.3 1007.5 1011.3 1016.1 989.9 DAY 11 23 14 18 23 24 20 3 4 11 6 11 PRESSURE AT HOUR 1800 UTC. MEAN QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** PRESSURE AT HOUR 2100 UTC. MEAN QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION DEHLORAN (40796) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 32 41 N LONGITUDE 47 16 E DATA PROCESSING CENTER ELEVATION 232.0 M MEANS AND EXTREMES FOR THE YEAR 1996 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AIR TEMPERATURE (C) 12.7 15.2 16.6 23.5 33.3 36.9 40.8 39.6 34.6 27.0 20.2 16.4 26.4 MINIMUN AIR TEMPERATURE (C) 9.1 11.0 11.7 17.3 26.3 28.8 33.5 31.6 27.5 20.4 14.9 12.0 20.3 DAYS WITH MINIMUM TEMP. >=21 0 0 0 4 31 30 31 31 30 15 0 0 172 DAYS WITH MINIMUM TEMP. <=-4 0 0 0 0 0 0 0 0 0 0 0 0 0 DAYS WITH FREEZING MIN.<= 0 0 0 0 0 0 0 0 0 0 0 0 0 0 TEMPERATURE RECORDS LOWEST(C) 5.0 3.8 8.0 11.8 21.6 23.2 28.8 28.0 21.4 12.4 11.6 8.0 3.8 DAY 21 6 5 15 12 7 7 25 23 28 13 16 MAXIMUM AIR TEMPERATURE (C) 16.7 19.7 20.9 28.9 39.1 43.1 47.0 46.5 41.6 33.3 26.2 21.6 32.0 DAYS WITH MAXIMUM TEMP. >=30 0 0 0 12 31 30 31 31 30 25 3 0 193 DAYS WITH MAXIMUM TEMP. <= 0 0 0 0 0 0 0 0 0 0 0 0 0 0 TEMPERATURE RECORDS HIGHEST(C) 21.6 26.0 28.0 36.8 43.8 46.6 49.6 49.0 46.0 42.6 31.0 25.2 49.6 DAY 2 8 31 30 31 17 20 12 12 1 5 2 DIF. BETWEEN (MAX.-MIN.) (C) 7.6 8.7 9.2 11.6 12.8 14.3 13.5 14.9 14.1 12.9 11.3 9.6 11.7 MEAN DAILY TEMP. (MDT) (C) 12.9 15.3 16.3 23.1 32.7 36.0 40.3 39.1 34.5 26.9 20.6 16.8 26.2 COOLING DEG. DAYS(BASE 21 0C) 0.0 0.0 1.0 72.7 362.4 448.8 597.0 559.7 406.5 184.5 16.2 0.0 2648.8 HEATING DEG. DAYS(BASE 18 0C) 159.5 82.5 60.1 0.8 0.0 0.0 0.0 0.0 0.0 0.0 1.7 49.7 354.2 DEWPOINT (MEAN C) 7.8 8.4 8.2 10.9 14.3 9.0 13.0 13.1 7.2 7.9 7.4 8.0 9.6 MIXING RATIO (G/KG) 6.87 7.22 7.11 8.64 11.25 7.84 10.22 10.23 6.94 7.03 6.91 6.95 8.10 VAPOUR PRESSURE (HPA) 10.83 11.34 11.15 13.49 17.39 12.12 15.68 15.72 10.79 11.02 10.89 10.99 12.62 SATURATION DEF. (HPA) 4.21 6.40 8.18 16.57 35.31 52.41 63.32 58.54 46.51 26.27 13.40 8.12 28.27 RELATIVE HUMIDITY (MEAN %) 75 67 61 49 34 20 21 22 21 32 47 61 43 RELATIVE HUMIDITY (MAX. %) 90 84 80 68 49 33 32 33 34 45 63 81 58 RELATIVE HUMIDITY (MIN. %) 56 48 40 35 24 13 14 14 12 21 31 41 29 RELATIVE HUMIDITY (MEAN% 03UTC) 83 77 75 58 45 27 26 29 27 42 55 73 51 RELATIVE HUMIDITY (MEAN% 09UTC) 62 55 50 41 28 15 17 19 14 25 38 52 35 RELATIVE HUMIDITY (MEAN% 15UTC) 70 62 53 45 29 16 16 17 19 29 45 52 38 RH=0 => RELATIVE HUMIDITY < 0.5% AMOUNT OF PRECIPITATION MM. 158.4 152.6 158.2 134.4 2.7 0.0 0.0 0.0 0.0 0.0 4.4 37.5 648.2 DAYS WITH PRECIPITATION >=10 4 5 3 3 0 0 0 0 0 0 0 1 16 DAYS WITH PRECIPITATION >= 5 8 6 6 5 0 0 0 0 0 0 0 2 27 DAYS WITH PRECIPITATION >= 1 10 8 9 6 1 0 0 0 0 0 2 4 40 DAYS WITH PRECIPITATION 11 10 14 9 2 0 0 0 0 0 6 8 60 GREATEST DAILY PRECIPITATION 66.0 47.0 57.5 59.0 2.2 0.0 0.0 0.0 0.0 0.0 2.0 26.0 66.0 DAY 5 20 22 14 11 ** ** ** ** ** 15 10 DAY WITH THUNDER STORM 3 0 4 3 0 0 0 0 0 0 1 2 13 DAYS WITH SNOW OR SLEET 0 0 0 0 0 0 0 0 0 0 0 0 0 DAYS WITH DUST 0 0 2 0 0 0 0 0 7 1 1 0 11 WIND DIRECTION (PREVAILING) 90 90 90 90 270 270 270 270 270 270 270 90 90 PREVAILING WIND SPEED(KNOTS) 10.2 9.3 10.9 11.2 6.6 8.5 7.2 8.1 8.6 6.1 5.4 7.3 9.1 PREVAILING WIND PERCENT 20.6 19.8 17.3 22.1 7.3 24.6 10.1 19.4 19.6 12.9 7.1 24.6 11.3 CALMS PERCENT OF WIND 64.4 62.9 62.9 52.1 66.5 51.7 62.1 55.5 63.8 62.9 74.6 60.9 61.7 NO. OF WIND OBSERVATION 247 232 248 240 248 240 248 247 240 248 240 248 2926 VECTOR WIND DIRECTION (MEAN) 102 101 99 97 310 284 233 264 276 167 141 106 127 VECTOR WIND MAGNITUDE(KNOTS) 2.3 1.9 1.7 1.7 0.4 2.3 0.6 1.6 2.1 0.6 0.3 2.0 0.3 WIND STEADINESES (MEAN %) 76.7 67.9 54.8 39.5 18.2 63.9 23.1 53.3 80.8 26.1 21.4 80.0 10.7 WIND SPEED (MEAN KNOTS) 3.0 2.8 3.1 4.3 2.2 3.6 2.6 3.0 2.6 2.3 1.4 2.5 2.8 FASTEST WIND DIRECTION 90 100 340 100 150 270 300 270 270 260 120 100 100 FASTEST WIND SPEED (KNOTS) 19 27 29 39 29 19 19 17 19 16 17 25 39 DAY 4 10 22 8 11 9 14 24 18 4 14 29 DAYS WITH SKY CLEAR (0-2)/8 9 9 11 14 16 29 27 31 30 29 17 14 236 DAYS WITH P.CLOUDY (3-6)/8 10 13 8 12 14 1 4 0 0 2 7 13 84 DAYS WITH CLOUDY (7-8)/8 12 7 12 4 1 0 0 0 0 0 6 4 46 DAYS WITH VISIBILITY =< 2 KM 7 0 3 0 1 0 0 0 2 0 0 0 13 DURATION OF SUNSHINE HOURS 89.7 179.0 180.4 259.5 304.4 376.6 349.8 356.2 305.6 306.3 197.3 190.9 3095.7 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION DEHLORAN (40796) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 32 41 N LONGITUDE 47 16 E DATA PROCESSING CENTER ELEVATION 232.0 M MEANS AND EXTREMES FOR THE YEAR 1996 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL MEAN QFE PRESSURE IN HPA 992.4 989.5 987.0 986.2 982.1 976.3 973.5 974.9 980.0 987.8 992.6 994.6 984.7 MAX. QFE PRESSURE IN HPA 999.4 995.2 996.0 991.1 987.1 983.1 981.1 980.4 988.7 993.2 1000.2 998.7 1000.2 DAY-HOUR 25- 6 6- 6 28-21 15- 9 17- 6 7- 6 3- 9 27- 6 25- 6 18- 6 16- 6 8- 6 MIN. QFE PRESSURE IN HPA 979.1 981.8 976.0 980.7 975.2 971.3 968.6 969.4 974.9 980.5 985.6 991.1 968.6 DAY-HOUR 12- 0 10-12 12-15 9-15 28-15 17-15 6-15 3-15 15-12 4-15 6-15 22-12 MEAN QNH PRESSURE IN HPA 1019.8 1016.9 1014.3 1013.5 1009.2 1003.3 1000.4 1001.9 1007.1 1015.1 1020.0 1022.1 1012.0 MAX. QNH PRESSURE IN HPA 1027.0 1022.7 1023.5 1018.5 1014.4 1010.3 1008.3 1007.5 1016.0 1020.6 1027.8 1026.3 1027.8 DAY-HOUR 25- 6 6- 6 28-21 15- 9 17- 6 7- 6 3- 9 27- 6 25- 6 18- 6 16- 6 8- 6 MIN. QNH PRESSURE IN HPA 1006.2 1009.0 1003.0 1007.8 1002.2 998.2 995.5 996.3 1001.9 1007.6 1012.9 1018.5 995.5 DAY-HOUR 12- 0 10-12 12-15 9-15 28-15 17-15 6-15 3-15 15-12 4-15 6-15 22-12 MEAN QFF PRESSURE IN HPA 1020.1 1016.9 1014.2 1012.7 1007.5 1001.3 998.1 999.7 1005.4 1014.0 1019.5 1022.0 1010.9 MAX. QFF PRESSURE IN HPA 1027.5 1023.4 1023.5 1018.2 1012.1 1008.7 1005.9 1005.5 1014.6 1020.0 1027.5 1025.9 1027.5 DAY-HOUR 25- 6 6- 6 28-21 15- 9 17- 6 7- 6 3- 9 27- 6 25- 6 18- 6 16- 6 8- 6 MIN. QFF PRESSURE IN HPA 1006.1 1008.4 1003.0 1006.5 1000.3 996.0 993.3 994.1 1000.0 1006.0 1011.9 1018.2 993.3 DAY-HOUR 12- 0 10-12 12-15 9-15 28-15 17-15 6-15 3-15 15-12 4-21 6-21 22-12 PRESSURE AT HOUR 0000 UTC. MEAN QFE PRESSURE IN HPA 992.1 989.3 986.7 985.9 981.6 976.1 972.9 974.1 979.6 987.2 992.3 994.5 984.4 MAX. QFE PRESSURE IN HPA 998.2 994.1 994.6 989.7 985.9 980.5 977.8 978.7 986.3 991.8 999.2 996.7 999.2 DAY 26 6 29 16 18 8 4 28 26 18 16 8 MIN. QFE PRESSURE IN HPA 979.1 983.6 981.5 982.4 976.6 972.0 968.8 969.6 976.5 980.5 985.9 991.9 968.8 DAY 12 5 19 3 29 18 6 4 15 5 7 15 MEAN QNH PRESSURE IN HPA 1019.5 1016.7 1014.0 1013.2 1008.8 1003.2 999.9 1001.1 1006.7 1014.5 1019.7 1022.0 1011.6 MAX. QNH PRESSURE IN HPA 1025.7 1021.6 1022.1 1017.1 1013.2 1007.6 1004.9 1005.8 1013.6 1019.2 1026.8 1024.2 1026.8 DAY 26 6 29 16 18 8 4 28 26 18 16 8 MIN. QNH PRESSURE IN HPA 1006.2 1010.8 1008.7 1009.6 1003.7 999.0 995.7 996.5 1003.6 1007.6 1013.2 1019.3 995.7 DAY 12 5 19 3 29 18 6 4 15 5 7 15 MEAN QFF PRESSURE IN HPA 1019.7 1016.6 1013.8 1012.3 1007.1 1001.2 997.5 998.9 1004.9 1013.4 1019.2 1021.8 1010.5 MAX. QFF PRESSURE IN HPA 1026.1 1022.2 1022.1 1016.7 1011.0 1005.7 1002.6 1003.8 1012.0 1018.5 1026.3 1023.8 1026.3 DAY 26 6 29 16 18 8 4 28 26 31 16 8 MIN. QFF PRESSURE IN HPA 1006.1 1011.1 1008.3 1008.7 1001.7 996.6 993.3 994.2 1001.7 1006.1 1012.1 1019.2 993.3 DAY 12 5 19 3 29 18 6 4 15 5 7 15 PRESSURE AT HOUR 0300 UTC. MEAN QFE PRESSURE IN HPA 992.0 989.3 987.1 986.2 982.2 976.4 973.7 975.1 980.1 987.8 992.6 994.6 984.8 MAX. QFE PRESSURE IN HPA 997.9 994.3 994.8 989.7 985.6 981.2 979.6 979.0 987.1 992.8 999.0 996.9 999.0 DAY 26 6 29 8 17 7 3 28 25 18 16 28 MIN. QFE PRESSURE IN HPA 979.9 983.9 980.9 982.5 977.1 972.8 969.6 970.7 976.3 981.3 988.4 991.9 969.6 DAY 12 5 7 18 29 17 6 4 15 5 7 14 MEAN QNH PRESSURE IN HPA 1019.4 1016.7 1014.4 1013.5 1009.3 1003.5 1000.7 1002.1 1007.2 1015.1 1020.0 1022.1 1012.0 MAX. QNH PRESSURE IN HPA 1025.4 1021.8 1022.3 1017.1 1012.9 1008.4 1006.7 1006.1 1014.4 1020.2 1026.6 1024.4 1026.6 DAY 26 6 29 8 17 7 3 28 25 18 16 28 MIN. QNH PRESSURE IN HPA 1007.0 1011.1 1008.1 1009.7 1004.2 999.8 996.5 997.6 1003.3 1008.5 1015.7 1019.3 996.5 DAY 12 5 7 18 29 17 6 4 15 5 7 14 MEAN QFF PRESSURE IN HPA 1019.7 1016.7 1014.6 1012.8 1007.7 1001.6 998.5 999.9 1005.6 1014.2 1019.7 1022.1 1011.1 MAX. QFF PRESSURE IN HPA 1025.9 1022.7 1022.4 1016.3 1011.0 1007.0 1004.6 1004.2 1013.0 1019.6 1026.3 1024.3 1026.3 DAY 26 6 29 8 17 7 3 28 25 18 16 28 MIN. QFF PRESSURE IN HPA 1007.1 1011.6 1007.8 1009.0 1002.4 997.5 994.2 995.5 1001.7 1007.2 1014.8 1019.1 994.2 DAY 12 5 7 18 29 17 6 4 15 5 7 14 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION DEHLORAN (40796) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 32 41 N LONGITUDE 47 16 E DATA PROCESSING CENTER ELEVATION 232.0 M MEANS AND EXTREMES FOR THE YEAR 1996 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 0600 UTC. MEAN QFE PRESSURE IN HPA 993.4 990.6 988.1 987.3 983.3 977.3 974.8 976.3 981.2 989.1 993.6 995.7 985.9 MAX. QFE PRESSURE IN HPA 999.4 995.2 995.4 990.7 987.1 983.1 980.9 980.4 988.7 993.2 1000.2 998.7 1000.2 DAY 25 6 29 15 17 7 3 27 25 18 16 8 MIN. QFE PRESSURE IN HPA 981.2 985.1 979.4 982.9 977.6 973.5 970.3 972.0 977.2 982.8 989.0 993.1 970.3 DAY 12 10 7 12 29 18 6 3 15 4 6 10 MEAN QNH PRESSURE IN HPA 1020.9 1018.0 1015.5 1014.6 1010.5 1004.4 1001.8 1003.4 1008.3 1016.4 1021.0 1023.2 1013.2 MAX. QNH PRESSURE IN HPA 1027.0 1022.7 1022.9 1018.1 1014.4 1010.3 1008.1 1007.5 1016.0 1020.6 1027.8 1026.3 1027.8 DAY 25 6 29 15 17 7 3 27 25 18 16 8 MIN. QNH PRESSURE IN HPA 1008.4 1012.4 1006.5 1010.1 1004.7 1000.5 997.2 999.0 1004.3 1010.0 1016.3 1020.5 997.2 DAY 12 10 7 12 29 18 6 3 15 4 6 10 MEAN QFF PRESSURE IN HPA 1021.2 1018.1 1015.3 1013.8 1008.8 1002.4 999.5 1001.2 1006.6 1015.4 1020.6 1023.2 1012.2 MAX. QFF PRESSURE IN HPA 1027.5 1023.4 1022.9 1018.0 1012.1 1008.7 1005.9 1005.5 1014.6 1020.0 1027.5 1025.9 1027.5 DAY 25 6 29 15 17 7 3 27 25 18 16 8 MIN. QFF PRESSURE IN HPA 1008.6 1011.8 1006.2 1009.1 1002.7 998.2 994.7 996.7 1002.4 1008.2 1015.7 1020.2 994.7 DAY 12 10 7 12 29 18 15 3 15 4 6 10 PRESSURE AT HOUR 0900 UTC. MEAN QFE PRESSURE IN HPA 993.1 990.3 987.6 987.2 983.1 977.2 974.6 976.0 980.8 988.5 993.1 995.4 985.6 MAX. QFE PRESSURE IN HPA 999.4 995.2 994.7 991.1 986.9 982.4 981.1 980.0 988.4 992.4 999.4 997.9 999.4 DAY 25 6 29 15 17 7 3 27 25 18 16 8 MIN. QFE PRESSURE IN HPA 981.6 982.9 979.2 981.5 978.1 973.2 969.5 971.7 976.4 982.6 988.0 993.0 969.5 DAY 12 10 7 12 28 18 6 3 15 5 6 22 MEAN QNH PRESSURE IN HPA 1020.5 1017.7 1014.9 1014.5 1010.3 1004.3 1001.7 1003.1 1007.9 1015.8 1020.5 1022.9 1012.8 MAX. QNH PRESSURE IN HPA 1027.0 1022.7 1022.2 1018.5 1014.2 1009.6 1008.3 1007.1 1015.7 1019.8 1027.0 1025.4 1027.0 DAY 25 6 29 15 17 7 3 27 25 18 16 8 MIN. QNH PRESSURE IN HPA 1008.8 1010.1 1006.3 1008.7 1005.2 1000.2 996.4 998.6 1003.5 1009.8 1015.3 1020.4 996.4 DAY 12 10 7 12 28 18 6 3 15 5 6 22 MEAN QFF PRESSURE IN HPA 1021.0 1017.6 1014.7 1013.7 1008.5 1002.2 999.3 1000.7 1006.0 1014.6 1020.0 1022.8 1011.8 MAX. QFF PRESSURE IN HPA 1027.3 1023.3 1022.1 1018.2 1011.8 1007.8 1005.9 1005.0 1014.1 1018.9 1026.5 1025.5 1027.3 DAY 25 6 29 15 17 7 3 27 25 18 16 24 MIN. QFF PRESSURE IN HPA 1009.0 1009.5 1005.9 1007.7 1003.0 997.8 994.1 996.3 1001.4 1008.3 1014.4 1020.2 994.1 DAY 12 10 7 12 28 18 6 3 15 4 6 22 PRESSURE AT HOUR 1200 UTC. MEAN QFE PRESSURE IN HPA 991.6 988.8 986.3 985.8 981.7 976.0 973.1 974.5 979.3 987.1 991.9 993.8 984.1 MAX. QFE PRESSURE IN HPA 998.1 993.4 993.3 990.6 985.0 981.2 979.6 978.8 986.8 991.2 998.1 996.0 998.1 DAY 25 6 28 15 17 7 3 27 25 18 16 24 MIN. QFE PRESSURE IN HPA 981.3 981.8 977.2 981.5 976.1 972.5 969.3 970.3 974.9 980.7 986.8 991.1 969.3 DAY 12 10 12 9 28 17 6 14 15 4 6 22 MEAN QNH PRESSURE IN HPA 1019.0 1016.1 1013.6 1013.1 1008.9 1003.0 1000.1 1001.5 1006.4 1014.3 1019.3 1021.2 1011.4 MAX. QNH PRESSURE IN HPA 1025.6 1020.8 1020.7 1018.0 1012.2 1008.4 1006.7 1005.9 1014.1 1018.6 1025.6 1023.5 1025.6 DAY 25 6 28 15 17 7 3 27 25 18 16 24 MIN. QNH PRESSURE IN HPA 1008.5 1009.0 1004.3 1008.7 1003.1 999.5 996.2 997.2 1001.9 1007.8 1014.1 1018.5 996.2 DAY 12 10 12 9 28 17 6 14 15 4 6 22 MEAN QFF PRESSURE IN HPA 1019.2 1016.1 1013.4 1012.3 1007.1 1001.0 997.7 999.1 1004.6 1013.2 1018.7 1021.0 1010.3 MAX. QFF PRESSURE IN HPA 1026.0 1021.5 1020.7 1017.7 1010.3 1006.6 1004.5 1003.7 1012.5 1017.7 1025.2 1023.5 1026.0 DAY 25 6 28 15 4 7 3 27 25 18 16 11 MIN. QFF PRESSURE IN HPA 1008.7 1008.4 1004.0 1007.2 1001.1 997.1 994.0 994.8 1000.0 1006.2 1013.2 1018.2 994.0 DAY 12 10 12 9 28 17 6 14 15 4 6 22 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION DEHLORAN (40796) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 32 41 N LONGITUDE 47 16 E DATA PROCESSING CENTER ELEVATION 232.0 M MEANS AND EXTREMES FOR THE YEAR 1996 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 1500 UTC. MEAN QFE PRESSURE IN HPA 991.9 988.8 986.2 985.2 981.0 975.2 972.3 973.8 979.0 987.1 992.2 994.0 983.9 MAX. QFE PRESSURE IN HPA 998.2 993.3 994.2 989.6 984.4 980.2 978.5 977.7 986.8 991.3 999.2 995.9 999.2 DAY 25 19 28 15 17 7 3 27 25 18 15 4 MIN. QFE PRESSURE IN HPA 983.1 981.8 976.0 980.7 975.2 971.3 968.6 969.4 974.9 980.5 985.6 991.7 968.6 DAY 12 10 12 9 28 17 6 3 15 4 6 22 MEAN QNH PRESSURE IN HPA 1019.3 1016.2 1013.4 1012.5 1008.2 1002.2 999.2 1000.8 1006.2 1014.4 1019.6 1021.5 1011.1 MAX. QNH PRESSURE IN HPA 1025.7 1020.7 1021.7 1017.0 1011.6 1007.3 1005.6 1004.8 1014.1 1018.7 1026.8 1023.4 1026.8 DAY 25 19 28 15 17 7 3 27 25 18 15 4 MIN. QNH PRESSURE IN HPA 1010.3 1009.0 1003.0 1007.8 1002.2 998.2 995.5 996.3 1001.9 1007.6 1012.9 1019.1 995.5 DAY 12 10 12 9 28 17 6 3 15 4 6 22 MEAN QFF PRESSURE IN HPA 1019.6 1016.2 1013.6 1011.7 1006.5 1000.3 996.9 998.6 1004.5 1013.4 1019.2 1021.5 1010.2 MAX. QFF PRESSURE IN HPA 1026.2 1021.1 1021.6 1016.7 1009.7 1005.8 1003.4 1002.8 1012.6 1018.0 1026.4 1023.4 1026.4 DAY 25 6 28 15 17 7 3 27 25 18 15 24 MIN. QFF PRESSURE IN HPA 1010.6 1008.4 1003.0 1006.5 1000.3 996.0 993.3 994.1 1000.2 1006.2 1012.2 1018.9 993.3 DAY 12 10 12 9 28 17 6 3 15 4 6 21 PRESSURE AT HOUR 1800 UTC. MEAN QFE PRESSURE IN HPA 992.6 989.6 987.0 986.0 981.7 976.1 973.2 974.8 980.1 988.0 992.6 994.6 984.7 MAX. QFE PRESSURE IN HPA 999.0 993.3 995.4 989.7 985.3 981.2 979.3 978.5 987.3 992.5 999.2 996.8 999.2 DAY 25 19 28 15 17 7 3 28 25 17 15 7 MIN. QFE PRESSURE IN HPA 982.5 982.9 979.4 982.4 976.0 972.2 969.5 970.7 975.6 980.9 986.1 991.7 969.5 DAY 11 10 12 2 28 16 25 3 15 4 6 21 MEAN QNH PRESSURE IN HPA 1020.0 1016.9 1014.3 1013.3 1008.9 1003.1 1000.2 1001.8 1007.3 1015.3 1020.0 1022.0 1011.9 MAX. QNH PRESSURE IN HPA 1026.6 1020.7 1022.9 1017.1 1012.6 1008.4 1006.4 1005.6 1014.6 1019.9 1026.8 1024.3 1026.8 DAY 25 19 28 15 17 7 3 28 25 17 15 7 MIN. QNH PRESSURE IN HPA 1009.7 1010.1 1006.5 1009.6 1003.0 999.2 996.4 997.6 1002.6 1008.1 1013.4 1019.1 996.4 DAY 11 10 12 2 28 16 25 3 15 4 6 21 MEAN QFF PRESSURE IN HPA 1020.3 1017.0 1014.2 1012.5 1007.2 1001.1 997.9 999.6 1005.5 1014.2 1019.6 1022.0 1010.9 MAX. QFF PRESSURE IN HPA 1027.0 1021.0 1023.0 1016.8 1010.5 1006.6 1004.3 1003.6 1013.1 1019.3 1026.2 1024.0 1027.0 DAY 25 7 28 15 17 7 3 28 25 17 15 27 MIN. QFF PRESSURE IN HPA 1009.8 1009.5 1006.6 1008.5 1001.0 996.9 993.9 995.4 1000.8 1006.4 1012.5 1018.8 993.9 DAY 11 10 12 23 28 16 25 14 15 4 6 21 PRESSURE AT HOUR 2100 UTC. MEAN QFE PRESSURE IN HPA 992.6 989.5 986.9 986.2 982.1 976.0 973.1 974.7 980.1 987.8 992.6 994.6 984.7 MAX. QFE PRESSURE IN HPA 999.0 993.8 996.0 990.0 985.3 980.5 978.9 978.3 987.3 992.5 999.9 996.8 999.9 DAY 25 6 28 25 17 7 3 28 25 17 15 7 MIN. QFE PRESSURE IN HPA 981.5 983.3 981.3 982.5 976.5 972.0 969.1 970.3 975.3 980.5 985.9 992.3 969.1 DAY 11 4 12 23 28 17 5 3 15 4 6 14 MEAN QNH PRESSURE IN HPA 1020.0 1016.9 1014.1 1013.5 1009.2 1003.1 1000.1 1001.7 1007.3 1015.1 1020.0 1022.1 1011.9 MAX. QNH PRESSURE IN HPA 1026.6 1021.2 1023.5 1017.4 1012.6 1007.6 1006.0 1005.4 1014.6 1019.9 1027.5 1024.3 1027.5 DAY 25 6 28 25 17 7 3 28 25 17 15 7 MIN. QNH PRESSURE IN HPA 1008.7 1010.5 1008.5 1009.7 1003.6 999.0 996.0 997.2 1002.3 1007.6 1013.2 1019.7 996.0 DAY 11 4 12 23 28 17 5 3 15 4 6 14 MEAN QFF PRESSURE IN HPA 1020.2 1016.8 1013.9 1012.6 1007.5 1001.0 997.7 999.4 1005.4 1013.9 1019.4 1021.9 1010.8 MAX. QFF PRESSURE IN HPA 1026.9 1021.7 1023.5 1016.7 1010.8 1005.7 1003.6 1003.2 1013.0 1019.2 1026.8 1023.7 1026.9 DAY 25 6 28 15 11 7 3 28 25 30 15 7 MIN. QFF PRESSURE IN HPA 1008.6 1010.7 1008.0 1008.4 1001.5 996.6 993.6 994.9 1000.3 1006.0 1011.9 1019.6 993.6 DAY 11 10 18 23 28 17 5 3 15 4 6 14 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION DEHLORAN (40796) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 32 41 N LONGITUDE 47 16 E DATA PROCESSING CENTER ELEVATION 232.0 M MEANS AND EXTREMES FOR THE YEAR 1997 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AIR TEMPERATURE (C) 12.9 11.7 15.2 23.0 32.6 37.7 38.2 36.6 33.9 27.9 19.4 13.9 25.3 MINIMUN AIR TEMPERATURE (C) 8.8 6.3 10.4 17.1 25.2 30.3 30.5 28.7 26.3 22.7 15.2 9.8 19.3 DAYS WITH MINIMUM TEMP. >=21 0 0 0 5 26 30 31 31 30 20 0 0 173 DAYS WITH MINIMUM TEMP. <=-4 0 0 0 0 0 0 0 0 0 0 0 0 0 DAYS WITH FREEZING MIN.<= 0 0 3 0 0 0 0 0 0 0 0 0 0 3 TEMPERATURE RECORDS LOWEST(C) 1.2 -0.2 2.6 7.2 16.6 21.8 27.4 26.0 21.2 16.8 11.8 6.6 -0.2 DAY 30 6 8 12 6 3 18 30 14 25 23 27 MAXIMUM AIR TEMPERATURE (C) 17.9 17.4 19.9 28.3 37.6 43.2 45.3 44.8 40.9 33.5 23.6 17.3 30.8 DAYS WITH MAXIMUM TEMP. >=30 0 0 0 10 30 30 31 31 30 21 0 0 183 DAYS WITH MAXIMUM TEMP. <= 0 0 0 0 0 0 0 0 0 0 0 0 0 0 TEMPERATURE RECORDS HIGHEST(C) 23.6 26.6 24.6 35.0 44.0 48.0 48.6 47.9 44.6 39.0 28.6 21.0 48.6 DAY 14 21 11 23 28 27 27 1 2 5 2 4 DIF. BETWEEN (MAX.-MIN.) (C) 9.1 11.1 9.5 11.2 12.4 12.9 14.8 16.1 14.6 10.8 8.4 7.5 11.5 MEAN DAILY TEMP. (MDT) (C) 13.4 11.9 15.1 22.7 31.4 36.7 37.9 36.7 33.6 28.1 19.4 13.5 25.0 COOLING DEG. DAYS(BASE 21 0C) 0.0 0.0 0.0 80.9 323.3 472.1 525.1 487.3 378.2 221.1 12.6 0.0 2500.6 HEATING DEG. DAYS(BASE 18 0C) 145.9 174.4 90.6 14.0 0.0 0.0 0.0 0.0 0.0 0.0 8.9 138.6 572.3 DEWPOINT (MEAN C) 6.2 -1.8 4.3 6.7 11.7 13.5 11.0 8.8 5.5 9.1 11.3 9.0 7.9 MIXING RATIO (G/KG) 6.13 3.52 5.58 6.83 9.18 10.45 8.88 7.45 5.87 7.67 8.68 7.43 7.31 VAPOUR PRESSURE (HPA) 9.68 5.58 8.77 10.70 14.28 16.11 13.66 11.55 9.19 12.03 13.64 11.72 11.41 SATURATION DEF. (HPA) 5.69 9.02 9.07 19.04 36.55 51.10 55.25 52.25 45.52 27.09 9.27 4.43 27.02 RELATIVE HUMIDITY (MEAN %) 67 42 52 39 30 25 21 20 18 35 61 75 40 RELATIVE HUMIDITY (MAX. %) 84 60 72 58 41 34 30 29 25 46 76 88 54 RELATIVE HUMIDITY (MIN. %) 49 26 37 25 20 18 13 11 11 24 45 60 28 RELATIVE HUMIDITY (MEAN% 03UTC) 77 56 68 54 39 32 28 29 23 41 73 85 50 RELATIVE HUMIDITY (MEAN% 09UTC) 56 29 45 35 23 21 16 15 12 29 52 68 33 RELATIVE HUMIDITY (MEAN% 15UTC) 61 32 44 29 25 21 16 14 17 30 54 76 35 RH=0 => RELATIVE HUMIDITY < 0.5% AMOUNT OF PRECIPITATION MM. 57.4 0.2 93.5 19.1 1.1 0.0 0.0 0.0 0.0 8.4 48.1 66.1 293.9 DAYS WITH PRECIPITATION >=10 2 0 2 0 0 0 0 0 0 0 1 1 6 DAYS WITH PRECIPITATION >= 5 2 0 5 2 0 0 0 0 0 1 4 4 18 DAYS WITH PRECIPITATION >= 1 5 0 11 3 0 0 0 0 0 2 5 7 33 DAYS WITH PRECIPITATION 8 2 17 7 4 0 0 0 0 4 6 11 59 GREATEST DAILY PRECIPITATION 31.0 0.1 36.0 9.0 0.6 0.0 0.0 0.0 0.0 7.0 26.0 39.0 39.0 DAY 15 18 29 18 24 ** ** ** ** 20 4 14 DAY WITH THUNDER STORM 1 0 3 1 4 1 0 0 0 1 1 1 13 DAYS WITH SNOW OR SLEET 0 0 0 0 0 0 0 0 0 0 0 0 0 DAYS WITH DUST 0 3 5 5 2 4 9 9 5 2 0 0 44 WIND DIRECTION (PREVAILING) 90 270 90 270 270 270 270 270 270 90 90 90 270 PREVAILING WIND SPEED(KNOTS) 7.9 5.2 8.4 5.9 6.5 7.8 7.3 7.3 6.4 3.2 6.6 6.6 6.5 PREVAILING WIND PERCENT 12.5 14.7 20.1 17.4 14.5 23.9 27.4 30.2 20.0 12.5 17.3 11.6 15.8 CALMS PERCENT OF WIND 69.0 67.0 50.5 51.1 48.5 43.9 55.6 62.1 65.4 67.3 73.8 76.1 60.9 NO. OF WIND OBSERVATION 248 224 204 178 227 205 248 248 240 248 214 155 2639 VECTOR WIND DIRECTION (MEAN) 105 247 98 188 263 283 274 272 273 30 101 118 260 VECTOR WIND MAGNITUDE(KNOTS) 1.1 0.6 1.2 0.6 1.0 2.1 2.3 2.2 1.6 0.1 1.1 0.6 0.5 WIND STEADINESES (MEAN %) 57.9 35.3 37.5 20.0 33.3 56.8 85.2 88.0 84.2 7.1 68.7 42.9 21.7 WIND SPEED (MEAN KNOTS) 1.9 1.7 3.2 3.0 3.0 3.7 2.7 2.5 1.9 1.4 1.6 1.4 2.3 FASTEST WIND DIRECTION 90 80 90 120 110 310 270 270 270 120 90 90 90 FASTEST WIND SPEED (KNOTS) 19 14 19 16 17 19 17 16 14 10 21 16 21 DAY 15 21 3 4 9 13 15 19 4 13 4 9 DAYS WITH SKY CLEAR (0-2)/8 16 22 8 14 21 22 31 31 30 18 14 13 240 DAYS WITH P.CLOUDY (3-6)/8 7 4 18 13 6 8 0 0 0 11 10 12 89 DAYS WITH CLOUDY (7-8)/8 8 2 5 3 4 0 0 0 0 2 6 6 36 DAYS WITH VISIBILITY =< 2 KM 3 0 3 0 1 1 0 0 0 0 1 4 13 DURATION OF SUNSHINE HOURS 199.8 250.5 204.1 263.4 294.3 328.7 368.1 352.7 320.4 220.3 197.3 157.7 3157.3 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION DEHLORAN (40796) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 32 41 N LONGITUDE 47 16 E DATA PROCESSING CENTER ELEVATION 232.0 M MEANS AND EXTREMES FOR THE YEAR 1997 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL MEAN QFE PRESSURE IN HPA 993.0 993.9 989.2 987.2 983.5 976.6 972.5 975.5 982.7 988.7 991.5 993.6 985.6 MAX. QFE PRESSURE IN HPA 998.0 1002.6 999.1 997.1 990.1 984.6 976.7 980.7 989.7 994.1 995.9 1000.4 1002.6 DAY-HOUR 19- 6 7- 6 1- 6 12- 6 6- 6 8- 6 25- 6 31- 6 30- 9 31- 6 8- 6 30- 6 MIN. QFE PRESSURE IN HPA 982.4 983.8 976.5 979.5 977.4 968.5 968.3 970.0 976.7 983.7 988.1 984.5 968.3 DAY-HOUR 16- 3 21-15 29- 6 4-15 30-15 29-15 12- 0 1-15 2-15 6-15 30-15 9-12 MEAN QNH PRESSURE IN HPA 1020.4 1021.4 1016.5 1014.5 1010.7 1003.7 999.4 1002.5 1009.9 1016.0 1018.9 1021.0 1012.9 MAX. QNH PRESSURE IN HPA 1025.5 1030.2 1026.7 1024.6 1017.5 1011.8 1003.8 1007.8 1017.1 1021.6 1023.4 1028.0 1030.2 DAY-HOUR 19- 6 7- 6 1- 6 12- 6 6- 6 8- 6 25- 6 31- 6 30- 9 31- 6 8- 6 30- 6 MIN. QNH PRESSURE IN HPA 1009.6 1011.0 1003.6 1006.6 1004.5 995.4 995.2 996.9 1003.8 1010.9 1015.4 1011.7 995.2 DAY-HOUR 16- 3 21-15 29- 6 4-15 30-15 29-15 12- 0 1-15 2-15 6-15 30-15 9-12 MEAN QFF PRESSURE IN HPA 1020.7 1021.8 1017.1 ****** 1008.7 1000.8 997.3 1000.5 1008.2 1014.8 1018.5 ****** ****** MAX. QFF PRESSURE IN HPA 1026.0 1031.4 1027.0 ****** 1015.7 1009.0 1001.7 1006.1 1015.7 1020.9 1022.8 ****** ****** DAY-HOUR 19- 6 7- 6 1- 6 **-** 6- 3 1- 6 25- 6 31- 6 30- 9 31- 6 8- 6 **-** MIN. QFF PRESSURE IN HPA 1009.7 1010.4 1005.4 ****** 1002.4 993.4 993.1 994.9 1001.9 1009.5 1014.9 ****** ****** DAY-HOUR 16- 3 21-15 29- 3 **-** 30-15 29-15 12- 0 1-15 2-15 15-12 11- 3 **-** PRESSURE AT HOUR 0000 UTC. MEAN QFE PRESSURE IN HPA 992.8 993.4 990.1 ****** 982.8 974.5 971.7 974.7 982.0 988.1 991.3 ****** ****** MAX. QFE PRESSURE IN HPA 996.0 999.2 997.7 ****** 986.3 981.4 975.4 978.2 988.8 991.8 994.9 ****** ****** DAY 19 7 1 ** 9 2 26 31 30 29 8 ** MIN. QFE PRESSURE IN HPA 982.9 987.5 982.7 ****** 977.5 968.9 968.3 970.5 976.9 984.1 988.8 ****** ****** DAY 16 19 16 ** 31 29 12 1 3 6 11 ** MEAN QNH PRESSURE IN HPA 1020.3 1020.9 1017.5 ****** 1010.0 1001.5 998.7 1001.7 1009.2 1015.4 1018.7 ****** ****** MAX. QNH PRESSURE IN HPA 1023.5 1026.8 1025.2 ****** 1013.6 1008.6 1002.4 1005.3 1016.1 1019.2 1022.4 ****** ****** DAY 19 7 1 ** 9 2 26 31 30 29 8 ** MIN. QNH PRESSURE IN HPA 1010.1 1014.8 1009.9 ****** 1004.6 995.8 995.2 997.4 1004.0 1011.3 1016.1 ****** ****** DAY 16 19 16 ** 31 29 12 1 3 6 11 ** MEAN QFF PRESSURE IN HPA 1020.4 1021.2 1017.5 ****** 1008.3 999.5 996.5 999.7 1007.4 1014.2 1018.1 ****** ****** MAX. QFF PRESSURE IN HPA 1023.9 1027.9 1025.6 ****** 1012.3 1006.8 1000.1 1003.5 1014.7 1018.3 1021.7 ****** ****** DAY 19 7 1 ** 9 2 26 31 30 29 8 ** MIN. QFF PRESSURE IN HPA 1010.4 1014.5 1009.7 ****** 1002.5 993.4 993.1 995.3 1001.9 1009.8 1015.4 ****** ****** DAY 16 19 16 ** 31 29 12 1 3 6 11 ** PRESSURE AT HOUR 0300 UTC. MEAN QFE PRESSURE IN HPA 992.9 993.7 989.0 986.7 983.8 977.4 972.5 975.5 982.7 988.6 991.3 993.3 985.6 MAX. QFE PRESSURE IN HPA 995.9 1000.3 997.7 995.4 989.0 983.3 975.9 979.1 989.3 991.9 994.9 999.4 1000.3 DAY 19 7 1 13 6 8 26 31 30 31 8 30 MIN. QFE PRESSURE IN HPA 982.4 987.1 978.4 981.7 978.3 969.6 969.2 970.7 977.7 984.2 988.2 985.4 969.2 DAY 16 19 29 5 31 29 12 1 3 6 11 10 MEAN QNH PRESSURE IN HPA 1020.3 1021.2 1016.3 1014.0 1011.1 1004.4 999.4 1002.6 1009.9 1015.9 1018.7 1020.8 1012.9 MAX. QNH PRESSURE IN HPA 1023.4 1027.9 1025.2 1022.9 1016.3 1010.5 1002.9 1006.2 1016.6 1019.3 1022.4 1027.0 1027.9 DAY 19 7 1 13 6 8 26 31 30 31 8 30 MIN. QNH PRESSURE IN HPA 1009.6 1014.4 1005.5 1008.9 1005.4 996.5 996.1 997.6 1004.8 1011.4 1015.5 1012.7 996.1 DAY 16 19 29 5 31 29 12 1 3 6 11 10 MEAN QFF PRESSURE IN HPA 1020.6 1021.7 1016.4 1013.4 1009.6 1002.5 997.4 1000.7 1008.3 1014.8 1018.4 1021.1 1012.1 MAX. QFF PRESSURE IN HPA 1023.9 1029.2 1025.7 1023.2 1015.7 1008.9 1000.8 1004.6 1015.4 1018.6 1021.8 1027.5 1029.2 DAY 19 7 1 12 6 8 26 31 30 31 8 30 MIN. QFF PRESSURE IN HPA 1009.7 1014.2 1005.4 1008.1 1003.4 994.4 994.2 995.6 1002.9 1010.0 1014.9 1012.7 994.2 DAY 16 19 29 5 31 29 12 1 3 6 11 10 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION DEHLORAN (40796) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 32 41 N LONGITUDE 47 16 E DATA PROCESSING CENTER ELEVATION 232.0 M MEANS AND EXTREMES FOR THE YEAR 1997 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 0600 UTC. MEAN QFE PRESSURE IN HPA 994.1 995.2 989.9 987.8 984.8 978.2 973.5 976.6 983.9 990.1 992.7 994.7 986.8 MAX. QFE PRESSURE IN HPA 998.0 1002.6 999.1 997.1 990.1 984.6 976.7 980.7 989.6 994.1 995.9 1000.4 1002.6 DAY 19 7 1 12 6 8 25 31 30 31 8 30 MIN. QFE PRESSURE IN HPA 984.6 988.6 976.5 982.8 979.5 970.7 970.5 971.7 979.4 985.4 989.1 987.9 970.5 DAY 16 21 29 5 31 29 16 1 2 6 11 9 MEAN QNH PRESSURE IN HPA 1021.6 1022.7 1017.3 1015.1 1012.1 1005.3 1000.4 1003.6 1011.1 1017.5 1020.1 1022.1 1014.1 MAX. QNH PRESSURE IN HPA 1025.5 1030.2 1026.7 1024.6 1017.5 1011.8 1003.8 1007.8 1017.0 1021.6 1023.4 1028.0 1030.2 DAY 19 7 1 12 6 8 25 31 30 31 8 30 MIN. QNH PRESSURE IN HPA 1011.8 1015.9 1003.6 1010.0 1006.6 997.6 997.4 998.6 1006.5 1012.7 1016.4 1015.2 997.4 DAY 16 21 29 5 31 29 16 1 2 6 11 9 MEAN QFF PRESSURE IN HPA 1021.9 1023.2 1019.2 ****** 1009.8 1001.5 998.3 1001.7 1009.4 1016.3 1019.7 ****** ****** MAX. QFF PRESSURE IN HPA 1026.0 1031.4 1027.0 ****** 1013.6 1009.0 1001.7 1006.1 1015.6 1020.9 1022.8 ****** ****** DAY 19 7 1 ** 12 1 25 31 30 31 8 ** MIN. QFF PRESSURE IN HPA 1012.0 1015.5 1011.9 ****** 1004.7 995.5 995.5 996.5 1004.7 1011.3 1015.8 ****** ****** DAY 16 21 16 ** 31 29 16 1 2 6 11 ** PRESSURE AT HOUR 0900 UTC. MEAN QFE PRESSURE IN HPA 993.7 995.0 989.6 987.9 984.5 978.0 973.3 976.5 983.5 989.6 992.2 993.9 986.5 MAX. QFE PRESSURE IN HPA 997.8 1001.9 998.5 996.6 990.0 984.0 976.2 980.7 989.7 993.1 995.2 999.2 1001.9 DAY 19 7 1 13 6 8 25 31 30 31 8 30 MIN. QFE PRESSURE IN HPA 985.3 988.1 978.0 982.9 978.6 970.5 970.1 972.1 978.6 985.2 989.8 986.8 970.1 DAY 16 21 29 5 31 29 16 1 2 6 24 9 MEAN QNH PRESSURE IN HPA 1021.2 1022.5 1017.0 1015.2 1011.7 1005.1 1000.3 1003.5 1010.7 1017.0 1019.6 1021.4 1013.8 MAX. QNH PRESSURE IN HPA 1025.3 1029.5 1026.1 1024.1 1017.4 1011.2 1003.2 1007.8 1017.1 1020.5 1022.7 1026.8 1029.5 DAY 19 7 1 13 6 8 25 31 30 31 8 30 MIN. QNH PRESSURE IN HPA 1012.6 1015.4 1005.1 1010.1 1005.7 997.4 997.0 999.1 1005.7 1012.5 1017.2 1014.1 997.0 DAY 16 21 29 5 31 29 16 1 2 6 24 9 MEAN QFF PRESSURE IN HPA 1021.4 1022.8 1018.5 ****** 1009.3 1001.3 998.1 1001.5 1009.0 1015.7 1019.2 ****** ****** MAX. QFF PRESSURE IN HPA 1025.7 1030.5 1026.3 ****** 1013.4 1008.4 1001.0 1006.0 1015.7 1019.8 1022.0 ****** ****** DAY 19 7 1 ** 12 4 25 31 30 31 8 ** MIN. QFF PRESSURE IN HPA 1012.7 1015.0 1011.2 ****** 1003.6 995.0 995.0 996.8 1003.7 1010.9 1016.9 ****** ****** DAY 16 21 15 ** 31 29 16 1 2 6 19 ** PRESSURE AT HOUR 1200 UTC. MEAN QFE PRESSURE IN HPA 992.2 993.2 987.8 986.0 982.8 976.6 972.2 975.1 982.0 988.1 990.9 992.8 985.0 MAX. QFE PRESSURE IN HPA 996.3 999.7 996.0 994.6 988.2 982.3 975.1 979.3 986.9 991.6 994.0 997.5 999.7 DAY 19 6 1 12 6 7 25 31 29 31 6 29 MIN. QFE PRESSURE IN HPA 983.8 985.0 978.7 980.6 978.1 968.9 969.0 971.0 977.2 983.9 988.6 984.5 968.9 DAY 16 21 29 4 30 29 16 1 2 15 20 9 MEAN QNH PRESSURE IN HPA 1019.6 1020.7 1015.2 1013.2 1010.0 1003.7 999.2 1002.1 1009.2 1015.4 1018.3 1020.2 1012.2 MAX. QNH PRESSURE IN HPA 1023.8 1027.3 1023.5 1022.1 1015.5 1009.5 1002.1 1006.4 1014.2 1019.0 1021.4 1025.0 1027.3 DAY 19 6 1 12 6 7 25 31 29 31 6 29 MIN. QNH PRESSURE IN HPA 1011.0 1012.2 1005.8 1007.8 1005.2 995.8 995.9 997.9 1004.3 1011.1 1015.9 1011.7 995.8 DAY 16 21 29 4 30 29 16 1 2 15 20 9 MEAN QFF PRESSURE IN HPA 1019.7 1021.0 1016.6 ****** 1007.7 999.4 997.0 1000.1 1007.4 1014.1 1017.9 ****** ****** MAX. QFF PRESSURE IN HPA 1024.1 1028.4 1023.7 ****** 1011.9 1006.3 999.9 1004.6 1012.7 1018.2 1020.8 ****** ****** DAY 19 6 1 ** 12 2 25 31 29 31 6 ** MIN. QFF PRESSURE IN HPA 1011.1 1011.8 1010.1 ****** 1002.9 993.6 993.8 995.8 1002.2 1009.5 1015.5 ****** ****** DAY 16 21 15 ** 30 29 16 1 2 15 20 ** ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION DEHLORAN (40796) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 32 41 N LONGITUDE 47 16 E DATA PROCESSING CENTER ELEVATION 232.0 M MEANS AND EXTREMES FOR THE YEAR 1997 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 1500 UTC. MEAN QFE PRESSURE IN HPA 992.5 993.2 987.9 985.6 982.4 976.0 971.6 974.6 981.8 988.0 990.9 993.3 984.8 MAX. QFE PRESSURE IN HPA 996.3 999.6 995.6 994.2 987.8 982.0 975.0 979.0 987.3 991.7 994.1 998.1 999.6 DAY 19 6 1 12 6 7 25 31 29 31 6 29 MIN. QFE PRESSURE IN HPA 984.3 983.8 979.9 979.5 977.4 968.5 968.6 970.0 976.7 983.7 988.1 984.8 968.5 DAY 16 21 24 4 30 29 16 1 2 6 30 9 MEAN QNH PRESSURE IN HPA 1019.9 1020.6 1015.2 1012.9 1009.5 1003.1 998.6 1001.6 1009.0 1015.3 1018.3 1020.7 1012.1 MAX. QNH PRESSURE IN HPA 1023.8 1027.2 1023.1 1021.7 1015.1 1009.2 1002.0 1006.1 1014.6 1019.1 1021.6 1025.6 1027.2 DAY 19 6 1 12 6 7 25 31 29 31 6 29 MIN. QNH PRESSURE IN HPA 1011.5 1011.0 1007.0 1006.6 1004.5 995.4 995.5 996.9 1003.8 1010.9 1015.4 1012.0 995.4 DAY 16 21 24 4 30 29 16 1 2 6 30 9 MEAN QFF PRESSURE IN HPA 1020.2 1021.1 1015.3 1012.2 1008.0 1001.1 996.5 999.8 1007.4 1014.2 1018.0 1021.0 1011.2 MAX. QFF PRESSURE IN HPA 1024.2 1028.5 1023.4 1022.0 1014.3 1007.5 999.9 1004.4 1013.2 1018.4 1021.0 1026.0 1028.5 DAY 19 6 1 12 6 7 25 31 29 31 6 29 MIN. QFF PRESSURE IN HPA 1011.7 1010.4 1006.7 1005.6 1002.4 993.4 993.6 994.9 1001.9 1009.6 1015.5 1011.9 993.4 DAY 16 21 24 4 30 29 16 1 2 6 30 9 PRESSURE AT HOUR 1800 UTC. MEAN QFE PRESSURE IN HPA 993.0 993.8 990.5 ****** 983.2 975.0 972.6 975.5 982.8 988.7 991.6 ****** ****** MAX. QFE PRESSURE IN HPA 996.2 999.8 996.3 ****** 987.0 982.0 976.4 980.4 988.9 992.4 995.2 ****** ****** DAY 19 6 9 ** 7 1 25 31 29 28 7 ** MIN. QFE PRESSURE IN HPA 983.5 985.9 983.8 ****** 978.4 970.0 969.5 970.9 977.5 984.6 989.4 ****** ****** DAY 15 21 15 ** 30 29 16 1 2 15 19 ** MEAN QNH PRESSURE IN HPA 1020.4 1021.3 1017.9 ****** 1010.4 1002.1 999.6 1002.5 1010.0 1016.1 1019.0 ****** ****** MAX. QNH PRESSURE IN HPA 1023.7 1027.4 1023.8 ****** 1014.3 1009.2 1003.5 1007.5 1016.2 1019.8 1022.7 ****** ****** DAY 19 6 9 ** 7 1 25 31 29 28 7 ** MIN. QNH PRESSURE IN HPA 1010.7 1013.2 1011.0 ****** 1005.5 996.9 996.4 997.8 1004.6 1011.8 1016.7 ****** ****** DAY 15 21 15 ** 30 29 16 1 2 15 19 ** MEAN QFF PRESSURE IN HPA 1020.7 1021.8 1018.0 ****** 1008.7 1000.0 997.5 1000.6 1008.3 1014.9 1018.5 ****** ****** MAX. QFF PRESSURE IN HPA 1024.1 1028.8 1024.5 ****** 1013.2 1007.4 1001.3 1005.8 1014.8 1019.1 1022.0 ****** ****** DAY 19 6 9 ** 7 1 25 31 29 28 7 ** MIN. QFF PRESSURE IN HPA 1010.6 1012.7 1010.9 ****** 1003.4 994.9 994.4 995.7 1002.7 1010.3 1016.3 ****** ****** DAY 15 21 15 ** 30 29 16 1 2 15 19 ** PRESSURE AT HOUR 2100 UTC. MEAN QFE PRESSURE IN HPA 993.0 993.8 990.3 ****** 983.1 975.0 972.5 975.4 982.7 988.6 991.4 ****** ****** MAX. QFE PRESSURE IN HPA 996.6 999.8 996.3 ****** 986.7 981.8 976.2 979.9 989.3 992.1 994.9 ****** ****** DAY 19 6 9 ** 7 1 25 31 29 28 7 ** MIN. QFE PRESSURE IN HPA 984.3 987.2 984.2 ****** 978.7 970.2 969.4 971.1 977.3 984.1 989.2 ****** ****** DAY 15 18 15 ** 30 28 11 1 2 15 10 ** MEAN QNH PRESSURE IN HPA 1020.5 1021.2 1017.7 ****** 1010.3 1002.1 999.5 1002.5 1009.9 1015.9 1018.8 ****** ****** MAX. QNH PRESSURE IN HPA 1024.1 1027.4 1023.8 ****** 1014.0 1009.0 1003.2 1007.0 1016.6 1019.5 1022.4 ****** ****** DAY 19 6 9 ** 7 1 25 31 29 28 7 ** MIN. QNH PRESSURE IN HPA 1011.5 1014.5 1011.4 ****** 1005.8 997.1 996.3 998.0 1004.4 1011.3 1016.5 ****** ****** DAY 15 18 15 ** 30 28 11 1 2 15 10 ** MEAN QFF PRESSURE IN HPA 1020.7 1021.6 1017.7 ****** 1008.6 999.9 997.3 1000.4 1008.1 1014.7 1018.3 ****** ****** MAX. QFF PRESSURE IN HPA 1024.4 1028.5 1024.5 ****** 1012.9 1007.2 1000.9 1005.0 1015.1 1018.7 1021.7 ****** ****** DAY 19 6 9 ** 7 1 25 31 29 28 7 ** MIN. QFF PRESSURE IN HPA 1011.6 1014.0 1011.2 ****** 1003.6 994.5 994.2 995.8 1002.4 1009.8 1015.8 ****** ****** DAY 15 18 15 ** 30 28 11 1 2 15 10 ** ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION DEHLORAN (40796) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 32 41 N LONGITUDE 47 16 E DATA PROCESSING CENTER ELEVATION 232.0 M MEANS AND EXTREMES FOR THE YEAR 1998 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AIR TEMPERATURE (C) 10.8 14.4 17.5 26.4 33.4 40.8 41.4 42.3 37.2 30.4 24.2 19.8 28.2 MINIMUN AIR TEMPERATURE (C) 6.6 9.1 11.8 18.2 24.4 30.6 32.3 33.7 28.6 22.2 16.7 13.6 20.7 DAYS WITH MINIMUM TEMP. >=21 0 0 0 7 25 30 31 31 30 20 0 0 174 DAYS WITH MINIMUM TEMP. <=-4 0 0 0 0 0 0 0 0 0 0 0 0 0 DAYS WITH FREEZING MIN.<= 0 0 0 0 0 0 0 0 0 0 0 0 0 0 TEMPERATURE RECORDS LOWEST(C) 1.4 1.4 6.4 11.6 19.2 25.6 28.0 28.4 25.0 17.8 14.0 9.8 1.4 DAY 13 16 21 6 2 14 9 23 22 31 26 4 MAXIMUM AIR TEMPERATURE (C) 14.0 18.4 21.4 31.0 37.7 45.8 46.4 47.3 42.4 35.7 29.1 24.6 32.8 DAYS WITH MAXIMUM TEMP. >=30 0 0 0 18 31 30 31 31 30 30 10 0 211 DAYS WITH MAXIMUM TEMP. <= 0 0 0 0 0 0 0 0 0 0 0 0 0 0 TEMPERATURE RECORDS HIGHEST(C) 18.2 24.0 27.0 37.6 43.8 50.8 49.6 50.0 47.2 40.5 32.4 28.4 50.8 DAY 28 6 24 12 27 23 15 19 2 5 20 17 DIF. BETWEEN (MAX.-MIN.) (C) 7.4 9.3 9.6 12.8 13.3 15.2 14.1 13.6 13.8 13.5 12.4 11.0 12.1 MEAN DAILY TEMP. (MDT) (C) 10.3 13.8 16.6 24.6 31.0 38.2 39.3 40.5 35.5 28.9 22.9 19.1 26.7 COOLING DEG. DAYS(BASE 21 0C) 0.0 0.0 2.6 118.2 311.5 516.9 568.1 604.5 434.8 246.1 57.0 1.9 2861.8 HEATING DEG. DAYS(BASE 18 0C) 238.9 123.1 60.4 0.6 0.0 0.0 0.0 0.0 0.0 0.0 0.0 6.0 428.9 DEWPOINT (MEAN C) 6.1 5.3 8.8 7.8 9.0 13.2 13.2 17.0 14.9 11.4 9.3 5.6 10.1 MIXING RATIO (G/KG) 6.06 5.85 7.45 7.02 7.50 10.13 10.30 12.87 11.42 8.78 7.61 6.03 8.42 VAPOUR PRESSURE (HPA) 9.58 9.23 11.70 10.99 11.71 15.64 15.84 19.76 17.64 13.73 11.97 9.53 13.11 SATURATION DEF. (HPA) 3.70 7.80 8.90 25.06 41.65 63.86 65.92 65.92 47.64 31.34 19.07 14.24 32.93 RELATIVE HUMIDITY (MEAN %) 75 58 60 34 24 21 20 25 29 32 40 42 38 RELATIVE HUMIDITY (MAX. %) 88 76 77 53 36 30 30 35 40 43 53 52 51 RELATIVE HUMIDITY (MIN. %) 61 42 46 23 17 16 15 18 21 25 31 32 29 RELATIVE HUMIDITY (MEAN% 03UTC) 86 70 74 52 36 30 30 34 40 43 52 50 50 RELATIVE HUMIDITY (MEAN% 09UTC) 68 52 55 26 20 18 17 21 24 28 35 36 33 RELATIVE HUMIDITY (MEAN% 15UTC) 75 54 56 31 21 19 17 21 25 31 38 43 36 RH=0 => RELATIVE HUMIDITY < 0.5% AMOUNT OF PRECIPITATION MM. 126.0 25.9 74.3 15.3 4.1 0.1 0.0 0.0 0.0 0.1 9.0 1.9 256.7 DAYS WITH PRECIPITATION >=10 4 1 2 0 0 0 0 0 0 0 0 0 7 DAYS WITH PRECIPITATION >= 5 5 1 6 2 0 0 0 0 0 0 1 0 15 DAYS WITH PRECIPITATION >= 1 10 2 8 2 1 0 0 0 0 0 2 1 26 DAYS WITH PRECIPITATION 11 4 9 3 3 1 1 0 0 1 2 2 37 GREATEST DAILY PRECIPITATION 34.0 23.0 24.0 9.0 4.0 0.1 0.0 0.0 0.0 0.1 8.0 1.5 34.0 DAY 5 15 8 28 13 19 ** ** ** 9 11 1 DAY WITH THUNDER STORM 2 1 1 1 2 1 1 0 0 0 0 0 9 DAYS WITH SNOW OR SLEET 0 0 0 0 0 0 0 0 0 0 0 0 0 DAYS WITH DUST 0 0 1 0 0 0 1 2 2 0 0 0 6 WIND DIRECTION (PREVAILING) 90 135 90 270 270 270 270 270 270 270 90 90 270 PREVAILING WIND SPEED(KNOTS) 5.7 7.8 8.2 6.6 5.8 7.2 8.3 7.3 6.3 5.7 8.5 5.9 6.6 PREVAILING WIND PERCENT 16.1 12.9 20.6 20.7 23.9 24.7 22.6 20.0 26.7 9.7 10.0 10.3 15.0 CALMS PERCENT OF WIND 63.2 58.6 43.2 48.0 49.7 52.0 46.5 55.5 52.7 72.3 75.3 79.4 58.0 NO. OF WIND OBSERVATION 155 140 155 150 155 150 155 155 150 155 150 155 1825 VECTOR WIND DIRECTION (MEAN) 115 172 122 209 249 274 261 264 264 243 111 119 230 VECTOR WIND MAGNITUDE(KNOTS) 1.0 1.3 1.0 0.5 1.6 2.0 1.9 1.6 1.6 0.5 1.0 0.8 0.6 WIND STEADINESES (MEAN %) 50.0 50.0 26.3 14.3 59.3 69.0 51.4 57.1 57.1 33.3 62.5 80.0 23.1 WIND SPEED (MEAN KNOTS) 2.0 2.6 3.8 3.5 2.7 2.9 3.7 2.8 2.8 1.5 1.6 1.0 2.6 FASTEST WIND DIRECTION 280 200 90 270 270 280 240 270 280 20 80 110 90 FASTEST WIND SPEED (KNOTS) 10 14 19 17 16 16 14 16 14 17 16 12 19 DAY 6 7 17 5 31 11 4 3 2 10 10 27 DAYS WITH SKY CLEAR (0-2)/8 12 13 11 18 17 25 29 26 26 30 19 10 236 DAYS WITH P.CLOUDY (3-6)/8 12 10 10 11 14 5 2 5 4 1 10 15 99 DAYS WITH CLOUDY (7-8)/8 7 5 10 1 0 0 0 0 0 0 1 6 30 DAYS WITH VISIBILITY =< 2 KM 5 3 0 0 0 0 0 1 0 0 0 0 9 DURATION OF SUNSHINE HOURS 163.0 178.9 202.0 285.0 340.7 366.0 359.5 344.5 303.9 308.4 226.7 195.9 3274.5 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION DEHLORAN (40796) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 32 41 N LONGITUDE 47 16 E DATA PROCESSING CENTER ELEVATION 232.0 M MEANS AND EXTREMES FOR THE YEAR 1998 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL MEAN QFE PRESSURE IN HPA 993.5 992.0 989.9 986.4 983.2 977.2 972.9 975.6 980.3 986.7 991.3 993.8 985.2 MAX. QFE PRESSURE IN HPA 1000.4 998.9 996.9 994.5 988.8 983.4 978.3 980.6 985.6 993.7 995.3 999.5 1000.4 DAY-HOUR 22- 6 5- 6 22- 6 1- 6 8- 6 5- 6 22- 6 25- 6 27- 6 25- 6 21- 6 5- 6 MIN. QFE PRESSURE IN HPA 984.8 984.3 979.6 980.1 977.6 969.3 968.3 970.5 974.6 981.1 987.3 988.1 968.3 DAY-HOUR 29-12 7-15 1-12 21- 3 29- 3 30-15 12-15 13-15 1-15 1-15 10-15 21-12 MEAN QNH PRESSURE IN HPA 1020.9 1019.4 1017.3 1013.7 1010.4 1004.2 999.9 1002.6 1007.4 1014.0 1018.7 1021.2 1012.5 MAX. QNH PRESSURE IN HPA 1028.0 1026.5 1024.4 1022.0 1016.1 1010.6 1005.4 1007.8 1012.9 1021.1 1022.8 1027.1 1028.0 DAY-HOUR 22- 6 5- 6 22- 6 1- 6 8- 6 5- 6 22- 6 25- 6 27- 6 25- 6 21- 6 5- 6 MIN. QNH PRESSURE IN HPA 1012.0 1011.5 1006.7 1007.2 1004.7 996.2 995.2 997.4 1001.6 1008.3 1014.6 1015.4 995.2 DAY-HOUR 29-12 7-15 1-12 21- 3 29- 3 30-15 12-15 13-15 1-15 1-15 10-15 21-12 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY-HOUR **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY-HOUR **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** PRESSURE AT HOUR 0000 UTC. MEAN QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** PRESSURE AT HOUR 0300 UTC. MEAN QFE PRESSURE IN HPA 993.0 991.8 989.7 986.3 983.3 977.3 973.0 975.7 980.3 986.5 991.3 993.8 985.2 MAX. QFE PRESSURE IN HPA 998.8 996.7 995.4 992.6 987.7 982.0 977.4 980.0 984.6 992.2 994.2 997.9 998.8 DAY 22 5 22 1 8 5 22 26 26 25 21 5 MIN. QFE PRESSURE IN HPA 985.4 985.2 980.6 980.1 977.6 971.0 969.6 972.9 976.1 981.9 989.4 988.7 969.6 DAY 13 8 1 21 29 30 12 13 1 1 10 21 MEAN QNH PRESSURE IN HPA 1020.4 1019.2 1017.1 1013.6 1010.5 1004.4 1000.0 1002.7 1007.4 1013.8 1018.7 1021.2 1012.4 MAX. QNH PRESSURE IN HPA 1026.4 1024.2 1022.9 1020.0 1015.0 1009.2 1004.5 1007.1 1011.8 1019.6 1021.7 1025.4 1026.4 DAY 22 5 22 1 8 5 22 26 26 25 21 5 MIN. QNH PRESSURE IN HPA 1012.7 1012.5 1007.8 1007.2 1004.7 997.9 996.5 999.9 1003.1 1009.1 1016.7 1016.0 996.5 DAY 13 8 1 21 29 30 12 13 1 1 10 21 MEAN QFF PRESSURE IN HPA 1020.9 1019.4 1017.0 1012.8 1009.0 1002.3 997.8 1000.4 1005.6 1012.7 1018.1 1021.1 1011.4 MAX. QFF PRESSURE IN HPA 1026.9 1024.5 1023.1 1019.8 1013.6 1007.3 1002.3 1005.1 1010.1 1018.8 1020.9 1025.5 1026.9 DAY 22 2 22 1 3 1 22 26 27 25 21 5 MIN. QFF PRESSURE IN HPA 1013.8 1012.1 1007.5 1006.3 1002.9 995.9 994.6 997.4 1001.1 1007.7 1016.0 1015.9 994.6 DAY 29 8 1 21 29 30 12 13 1 10 10 21 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION DEHLORAN (40796) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 32 41 N LONGITUDE 47 16 E DATA PROCESSING CENTER ELEVATION 232.0 M MEANS AND EXTREMES FOR THE YEAR 1998 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 0600 UTC. MEAN QFE PRESSURE IN HPA 994.3 993.2 990.9 987.5 984.4 978.2 973.9 976.9 981.5 988.0 992.7 995.0 986.4 MAX. QFE PRESSURE IN HPA 1000.4 998.9 996.9 994.5 988.8 983.4 978.3 980.6 985.6 993.7 995.3 999.5 1000.4 DAY 22 5 22 1 8 5 22 25 27 25 21 5 MIN. QFE PRESSURE IN HPA 986.2 987.0 981.3 980.7 978.9 971.9 970.6 973.4 977.6 983.4 989.9 989.7 970.6 DAY 12 15 1 21 29 30 12 7 1 1 11 21 MEAN QNH PRESSURE IN HPA 1021.7 1020.7 1018.3 1014.8 1011.6 1005.3 1000.9 1003.9 1008.6 1015.4 1020.1 1022.5 1013.7 MAX. QNH PRESSURE IN HPA 1028.0 1026.5 1024.4 1022.0 1016.1 1010.6 1005.4 1007.8 1012.9 1021.1 1022.8 1027.1 1028.0 DAY 22 5 22 1 8 5 22 25 27 25 21 5 MIN. QNH PRESSURE IN HPA 1013.5 1014.3 1008.5 1007.8 1006.0 998.9 997.5 1000.4 1004.7 1010.6 1017.3 1017.1 997.5 DAY 12 15 1 21 29 30 12 7 1 1 11 21 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** PRESSURE AT HOUR 0900 UTC. MEAN QFE PRESSURE IN HPA 994.0 992.8 990.7 987.2 984.0 977.8 973.6 976.4 981.0 987.4 991.8 994.1 985.9 MAX. QFE PRESSURE IN HPA 999.6 998.3 996.6 994.1 988.7 983.4 978.2 980.4 985.2 992.9 994.8 998.9 999.6 DAY 22 5 21 2 3 5 22 25 27 25 21 5 MIN. QFE PRESSURE IN HPA 985.8 985.7 980.5 980.9 978.8 971.2 970.6 973.3 977.1 983.0 989.3 988.5 970.6 DAY 12 15 1 21 30 30 12 13 1 1 10 21 MEAN QNH PRESSURE IN HPA 1021.4 1020.2 1018.1 1014.5 1011.2 1004.9 1000.6 1003.4 1008.1 1014.7 1019.2 1021.5 1013.2 MAX. QNH PRESSURE IN HPA 1027.2 1025.8 1024.1 1021.6 1016.0 1010.6 1005.3 1007.5 1012.5 1020.3 1022.3 1026.5 1027.2 DAY 22 5 21 2 3 5 22 25 27 25 21 5 MIN. QNH PRESSURE IN HPA 1013.1 1013.0 1007.6 1008.1 1005.9 998.1 997.5 1000.3 1004.2 1010.2 1016.6 1015.8 997.5 DAY 12 15 1 21 30 30 12 13 1 1 10 21 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** PRESSURE AT HOUR 1200 UTC. MEAN QFE PRESSURE IN HPA 992.9 991.1 989.1 985.8 982.6 976.6 972.4 974.9 979.5 985.8 990.3 992.8 984.5 MAX. QFE PRESSURE IN HPA 998.3 995.9 995.4 992.5 986.3 982.1 976.9 979.0 983.9 991.4 993.5 997.4 998.3 DAY 14 5 21 2 3 5 22 25 25 25 21 6 MIN. QFE PRESSURE IN HPA 984.8 984.4 979.6 980.4 978.1 970.1 968.9 971.4 975.2 981.2 987.3 988.1 968.9 DAY 29 15 1 21 29 30 12 13 1 1 11 21 MEAN QNH PRESSURE IN HPA 1020.3 1018.5 1016.5 1013.1 1009.8 1003.7 999.4 1001.9 1006.6 1013.1 1017.6 1020.3 1011.7 MAX. QNH PRESSURE IN HPA 1025.8 1023.4 1022.9 1019.9 1013.6 1009.3 1004.0 1006.1 1011.1 1018.8 1020.9 1024.9 1025.8 DAY 14 5 21 2 3 5 22 25 25 25 21 6 MIN. QNH PRESSURE IN HPA 1012.0 1011.6 1006.7 1007.5 1005.2 997.0 995.8 998.3 1002.2 1008.4 1014.6 1015.4 995.8 DAY 29 15 1 21 29 30 12 13 1 1 11 21 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION DEHLORAN (40796) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 32 41 N LONGITUDE 47 16 E DATA PROCESSING CENTER ELEVATION 232.0 M MEANS AND EXTREMES FOR THE YEAR 1998 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 1500 UTC. MEAN QFE PRESSURE IN HPA 993.3 991.2 989.2 985.3 981.9 975.9 971.7 974.1 979.3 985.9 990.5 993.2 984.3 MAX. QFE PRESSURE IN HPA 998.9 996.6 995.8 991.6 985.8 981.5 975.6 977.6 983.7 991.4 994.3 997.7 998.9 DAY 14 2 21 12 2 5 22 25 25 25 21 6 MIN. QFE PRESSURE IN HPA 986.3 984.3 980.2 980.2 978.3 969.3 968.3 970.5 974.6 981.1 987.3 988.9 968.3 DAY 29 7 1 17 30 30 12 13 1 1 10 21 MEAN QNH PRESSURE IN HPA 1020.8 1018.6 1016.6 1012.6 1009.1 1002.9 998.6 1001.1 1006.4 1013.2 1017.9 1020.6 1011.5 MAX. QNH PRESSURE IN HPA 1026.5 1024.1 1023.3 1019.0 1013.1 1008.7 1002.6 1004.7 1010.9 1018.8 1021.8 1025.2 1026.5 DAY 14 2 21 12 2 5 22 25 25 25 21 6 MIN. QNH PRESSURE IN HPA 1013.6 1011.5 1007.3 1007.3 1005.4 996.2 995.2 997.4 1001.6 1008.3 1014.6 1016.2 995.2 DAY 29 7 1 17 30 30 12 13 1 1 10 21 MEAN QFF PRESSURE IN HPA 1021.3 1018.8 1016.5 1011.7 1007.6 1000.8 996.4 998.8 1004.6 1012.0 1017.3 1020.5 1010.5 MAX. QFF PRESSURE IN HPA 1027.6 1024.4 1023.6 1018.6 1012.0 1006.5 1000.4 1002.7 1009.1 1017.9 1021.0 1025.2 1027.6 DAY 14 2 21 2 2 5 22 25 25 25 21 6 MIN. QFF PRESSURE IN HPA 1013.9 1010.9 1007.2 1006.1 1003.9 994.1 993.2 995.0 999.5 1007.0 1013.7 1016.2 993.2 DAY 29 7 1 17 28 30 12 13 1 1 10 21 PRESSURE AT HOUR 1800 UTC. MEAN QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** PRESSURE AT HOUR 2100 UTC. MEAN QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION DEHLORAN (40796) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 32 41 N LONGITUDE 47 16 E DATA PROCESSING CENTER ELEVATION 232.0 M MEANS AND EXTREMES FOR THE YEAR 1999 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AIR TEMPERATURE (C) 14.4 16.2 19.5 27.7 35.6 39.6 40.9 42.0 36.8 31.5 20.8 15.5 28.4 MINIMUN AIR TEMPERATURE (C) 10.1 10.6 13.5 19.2 26.6 30.2 32.4 32.8 27.5 24.0 14.4 10.3 21.0 DAYS WITH MINIMUM TEMP. >=21 0 0 0 10 30 30 31 31 30 24 1 0 187 DAYS WITH MINIMUM TEMP. <=-4 0 0 0 0 0 0 0 0 0 0 0 0 0 DAYS WITH FREEZING MIN.<= 0 0 0 0 0 0 0 0 0 0 0 0 0 0 TEMPERATURE RECORDS LOWEST(C) 5.4 5.2 9.2 13.8 20.0 26.6 28.8 28.8 22.8 17.0 4.2 4.8 4.2 DAY 22 22 18 9 2 30 5 1 19 14 29 1 MAXIMUM AIR TEMPERATURE (C) 18.1 20.1 23.3 32.1 39.9 44.2 46.1 47.1 41.9 36.4 25.3 19.7 32.8 DAYS WITH MAXIMUM TEMP. >=30 0 0 1 24 31 30 31 31 30 30 2 0 210 DAYS WITH MAXIMUM TEMP. <= 0 0 0 0 0 0 0 0 0 0 0 0 0 0 TEMPERATURE RECORDS HIGHEST(C) 22.0 23.8 32.6 37.2 47.6 48.6 50.4 49.6 47.0 41.6 31.2 25.2 50.4 DAY 2 28 31 26 31 1 3 26 3 7 7 9 DIF. BETWEEN (MAX.-MIN.) (C) 8.0 9.5 9.8 12.9 13.3 14.0 13.7 14.3 14.4 12.4 10.9 9.4 11.8 MEAN DAILY TEMP. (MDT) (C) 14.1 15.4 18.4 25.6 33.3 37.2 39.2 40.0 34.7 30.2 19.8 15.0 26.9 COOLING DEG. DAYS(BASE 21 0C) 0.0 0.0 7.8 140.5 380.4 486.5 565.5 588.1 411.0 284.1 20.6 0.0 2884.8 HEATING DEG. DAYS(BASE 18 0C) 121.6 74.5 23.9 0.0 0.0 0.0 0.0 0.0 0.0 0.0 17.5 96.0 333.5 DEWPOINT (MEAN C) 8.1 8.2 8.6 11.9 10.8 13.1 15.8 15.6 13.2 11.2 7.8 7.8 11.0 MIXING RATIO (G/KG) 6.96 7.06 7.28 9.30 8.58 10.06 12.05 11.75 10.06 8.59 6.97 6.86 8.79 VAPOUR PRESSURE (HPA) 10.97 11.12 11.43 14.51 13.34 15.54 18.46 18.07 15.58 13.44 10.97 10.85 13.69 SATURATION DEF. (HPA) 5.80 7.77 11.97 24.06 47.15 58.51 60.81 66.24 48.92 34.70 14.62 7.20 32.31 RELATIVE HUMIDITY (MEAN %) 69 62 52 40 24 22 25 23 26 30 45 63 40 RELATIVE HUMIDITY (MAX. %) 83 78 68 54 33 32 35 32 38 39 58 77 52 RELATIVE HUMIDITY (MIN. %) 56 47 41 30 18 17 19 17 20 23 34 48 31 RELATIVE HUMIDITY (MEAN% 03UTC) 78 73 65 53 33 32 35 32 38 39 58 74 51 RELATIVE HUMIDITY (MEAN% 09UTC) 64 55 46 34 21 19 21 19 22 26 38 55 35 RELATIVE HUMIDITY (MEAN% 15UTC) 69 62 50 37 21 20 21 19 24 30 43 67 39 RH=0 => RELATIVE HUMIDITY < 0.5% AMOUNT OF PRECIPITATION MM. 95.8 69.5 20.1 0.4 0.1 0.0 0.0 0.0 0.0 0.4 3.5 78.3 268.1 DAYS WITH PRECIPITATION >=10 3 3 0 0 0 0 0 0 0 0 0 3 9 DAYS WITH PRECIPITATION >= 5 6 3 1 0 0 0 0 0 0 0 0 5 15 DAYS WITH PRECIPITATION >= 1 6 6 5 0 0 0 0 0 0 0 1 5 23 DAYS WITH PRECIPITATION 9 8 7 4 1 0 0 0 0 2 2 7 40 GREATEST DAILY PRECIPITATION 51.0 32.0 8.0 0.4 0.1 0.0 0.0 0.0 0.0 0.4 3.3 24.0 51.0 DAY 9 20 2 2 1 ** ** ** ** 28 8 2 DAY WITH THUNDER STORM 0 2 3 1 0 0 0 0 0 0 0 0 6 DAYS WITH SNOW OR SLEET 0 0 0 0 0 0 0 0 0 0 0 0 0 DAYS WITH DUST 0 0 0 0 3 3 8 1 4 0 0 0 19 WIND DIRECTION (PREVAILING) 90 90 90 270 270 270 270 270 270 270 270 135 270 PREVAILING WIND SPEED(KNOTS) 6.5 7.1 7.6 5.8 6.8 6.2 7.0 6.4 7.4 5.2 4.8 4.7 6.3 PREVAILING WIND PERCENT 13.5 17.9 16.8 13.3 23.2 30.7 17.4 10.3 36.0 11.6 10.0 7.1 14.8 CALMS PERCENT OF WIND 71.0 62.1 57.4 52.7 51.6 50.7 60.6 67.1 52.0 69.0 71.3 78.1 62.0 NO. OF WIND OBSERVATION 155 140 155 150 155 150 155 155 150 155 150 155 1825 VECTOR WIND DIRECTION (MEAN) 119 104 117 197 273 266 248 213 273 243 230 147 236 VECTOR WIND MAGNITUDE(KNOTS) 1.0 1.3 0.8 0.9 1.7 1.9 1.0 0.6 2.8 0.5 0.5 0.6 0.6 WIND STEADINESES (MEAN %) 62.5 54.2 28.6 32.1 58.6 67.9 37.0 31.6 84.8 33.3 38.5 54.5 26.1 WIND SPEED (MEAN KNOTS) 1.6 2.4 2.8 2.8 2.9 2.8 2.7 1.9 3.3 1.5 1.3 1.1 2.3 FASTEST WIND DIRECTION 170 90 80 90 20 280 300 290 300 90 250 130 80 FASTEST WIND SPEED (KNOTS) 14 16 17 16 16 14 14 14 14 10 8 8 17 DAY 9 8 20 1 28 6 10 8 5 27 7 1 DAYS WITH SKY CLEAR (0-2)/8 13 13 16 13 25 29 29 23 30 22 17 15 245 DAYS WITH P.CLOUDY (3-6)/8 12 9 8 14 5 1 1 7 0 9 11 9 86 DAYS WITH CLOUDY (7-8)/8 6 6 7 3 1 0 0 1 0 0 2 7 33 DAYS WITH VISIBILITY =< 2 KM 4 1 3 1 3 0 6 0 0 0 0 2 20 DURATION OF SUNSHINE HOURS 187.4 195.9 231.7 273.4 329.3 366.3 319.3 326.4 324.8 275.0 228.3 184.5 3242.3 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION DEHLORAN (40796) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 32 41 N LONGITUDE 47 16 E DATA PROCESSING CENTER ELEVATION 232.0 M MEANS AND EXTREMES FOR THE YEAR 1999 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL MEAN QFE PRESSURE IN HPA 992.4 992.1 988.1 986.5 981.8 977.1 972.6 975.2 980.1 986.9 991.8 995.5 985.0 MAX. QFE PRESSURE IN HPA 999.0 998.2 995.6 992.6 990.2 983.5 978.1 981.8 987.5 991.9 998.7 1000.9 1000.9 DAY-HOUR 22- 6 22- 6 18- 6 11- 6 1- 6 6- 6 1- 6 19- 6 30- 6 29- 6 15- 6 3- 6 MIN. QFE PRESSURE IN HPA 982.6 983.3 978.1 979.7 977.3 969.6 966.2 969.6 975.5 981.1 983.7 990.8 966.2 DAY-HOUR 9- 3 5-15 2- 3 7-15 17-15 24-15 12-15 7-15 6-15 8-15 1- 3 31-12 MEAN QNH PRESSURE IN HPA 1019.8 1019.5 1015.4 1013.7 1009.0 1004.1 999.6 1002.3 1007.2 1014.1 1019.2 1023.0 1012.2 MAX. QNH PRESSURE IN HPA 1026.6 1025.7 1023.1 1020.0 1017.6 1010.7 1005.2 1009.0 1014.8 1019.3 1026.3 1028.5 1028.5 DAY-HOUR 22- 6 22- 6 18- 6 11- 6 1- 6 6- 6 1- 6 19- 6 30- 6 29- 6 15- 6 3- 6 MIN. QNH PRESSURE IN HPA 1009.8 1010.5 1005.2 1006.8 1004.4 996.5 993.0 996.5 1002.5 1008.3 1010.9 1018.2 993.0 DAY-HOUR 9- 3 5-15 2- 3 7-15 17-15 24-15 12-15 7-15 6-15 8-15 1- 3 31-12 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY-HOUR **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY-HOUR **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** PRESSURE AT HOUR 0000 UTC. MEAN QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** PRESSURE AT HOUR 0300 UTC. MEAN QFE PRESSURE IN HPA 992.2 991.9 987.9 986.5 982.0 977.1 972.7 975.3 980.1 986.7 991.7 995.4 985.0 MAX. QFE PRESSURE IN HPA 997.6 997.1 994.2 991.4 988.7 982.8 977.1 980.9 985.9 990.4 996.7 998.7 998.7 DAY 22 22 18 11 1 6 1 19 30 29 29 3 MIN. QFE PRESSURE IN HPA 982.6 984.8 978.1 980.3 977.5 970.6 967.7 970.9 976.4 982.9 983.7 991.2 967.7 DAY 9 6 2 8 20 24 12 7 7 9 1 27 MEAN QNH PRESSURE IN HPA 1019.6 1019.3 1015.2 1013.8 1009.2 1004.2 999.7 1002.4 1007.3 1014.0 1019.1 1022.9 1012.2 MAX. QNH PRESSURE IN HPA 1025.1 1024.6 1021.7 1018.8 1016.0 1010.0 1004.2 1008.1 1013.2 1017.8 1024.2 1026.3 1026.3 DAY 22 22 18 11 1 6 1 19 30 29 29 3 MIN. QNH PRESSURE IN HPA 1009.8 1012.0 1005.2 1007.4 1004.6 997.5 994.6 997.8 1003.5 1010.1 1010.9 1018.6 994.6 DAY 9 6 2 8 20 24 12 7 7 9 1 27 MEAN QFF PRESSURE IN HPA 1019.8 1019.5 1015.0 1012.9 1007.6 1002.2 997.5 1000.2 1005.5 1012.7 1018.8 1023.1 1011.2 MAX. QFF PRESSURE IN HPA 1025.9 1025.4 1021.8 1018.2 1014.8 1008.2 1002.1 1006.0 1011.7 1016.9 1024.9 1027.0 1027.0 DAY 22 22 18 11 1 6 1 19 30 29 29 3 MIN. QFF PRESSURE IN HPA 1009.7 1012.4 1005.0 1006.6 1003.0 995.6 992.3 995.5 1001.7 1008.5 1010.0 1018.7 992.3 DAY 9 6 2 8 20 24 12 7 7 9 1 27 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION DEHLORAN (40796) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 32 41 N LONGITUDE 47 16 E DATA PROCESSING CENTER ELEVATION 232.0 M MEANS AND EXTREMES FOR THE YEAR 1999 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 0600 UTC. MEAN QFE PRESSURE IN HPA 993.3 993.2 989.1 987.7 982.9 978.1 973.6 976.4 981.3 988.2 993.0 996.6 986.1 MAX. QFE PRESSURE IN HPA 999.0 998.2 995.6 992.6 990.2 983.5 978.1 981.8 987.5 991.9 998.7 1000.9 1000.9 DAY 22 22 18 11 1 6 1 19 30 29 15 3 MIN. QFE PRESSURE IN HPA 983.3 987.8 979.5 983.1 979.1 971.3 968.5 972.0 977.7 983.8 985.3 992.1 968.5 DAY 9 5 2 27 20 24 12 7 7 8 1 27 MEAN QNH PRESSURE IN HPA 1020.8 1020.6 1016.4 1015.0 1010.1 1005.2 1000.6 1003.5 1008.5 1015.6 1020.5 1024.2 1013.4 MAX. QNH PRESSURE IN HPA 1026.6 1025.7 1023.1 1020.0 1017.6 1010.7 1005.2 1009.0 1014.8 1019.3 1026.3 1028.5 1028.5 DAY 22 22 18 11 1 6 1 19 30 29 15 3 MIN. QNH PRESSURE IN HPA 1010.5 1015.1 1006.6 1010.3 1006.2 998.2 995.4 999.0 1004.8 1011.0 1012.6 1019.5 995.4 DAY 9 5 2 27 20 24 12 7 7 8 1 27 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** PRESSURE AT HOUR 0900 UTC. MEAN QFE PRESSURE IN HPA 993.0 993.0 988.8 987.2 982.6 977.8 973.4 976.0 980.7 987.5 992.3 995.8 985.7 MAX. QFE PRESSURE IN HPA 998.4 998.1 995.5 992.0 990.2 982.9 977.6 981.1 987.5 991.5 998.1 1000.0 1000.0 DAY 22 22 18 11 1 6 1 19 30 29 15 3 MIN. QFE PRESSURE IN HPA 984.6 987.1 979.2 983.0 979.2 971.0 968.1 971.7 977.4 983.1 984.9 991.5 968.1 DAY 9 5 2 27 20 24 12 14 10 8 1 31 MEAN QNH PRESSURE IN HPA 1020.4 1020.4 1016.1 1014.5 1009.8 1004.9 1000.4 1003.0 1007.9 1014.8 1019.8 1023.3 1012.9 MAX. QNH PRESSURE IN HPA 1026.0 1025.6 1023.0 1019.4 1017.6 1010.1 1004.7 1008.3 1014.8 1018.9 1025.6 1027.6 1027.6 DAY 22 22 18 11 1 6 1 19 30 29 15 3 MIN. QNH PRESSURE IN HPA 1011.8 1014.4 1006.3 1010.2 1006.3 997.9 995.0 998.6 1004.5 1010.3 1012.1 1018.9 995.0 DAY 9 5 2 27 20 24 12 14 10 8 1 31 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** PRESSURE AT HOUR 1200 UTC. MEAN QFE PRESSURE IN HPA 991.6 991.0 987.3 985.7 981.1 976.6 972.1 974.6 979.3 986.0 991.0 994.8 984.2 MAX. QFE PRESSURE IN HPA 996.5 996.0 993.3 990.0 988.7 981.1 976.6 979.4 986.0 990.2 996.5 999.2 999.2 DAY 10 22 18 10 1 6 1 18 30 29 29 3 MIN. QFE PRESSURE IN HPA 985.2 983.6 979.0 981.3 978.0 969.8 966.9 970.4 975.8 981.5 984.5 990.8 966.9 DAY 8 5 2 7 17 24 12 7 10 8 11 31 MEAN QNH PRESSURE IN HPA 1019.0 1018.4 1014.6 1013.0 1008.2 1003.6 999.0 1001.6 1006.5 1013.3 1018.3 1022.3 1011.5 MAX. QNH PRESSURE IN HPA 1024.0 1023.5 1020.7 1017.4 1016.0 1008.3 1003.7 1006.5 1013.3 1017.6 1024.0 1026.8 1026.8 DAY 10 22 18 10 1 6 1 18 30 29 29 3 MIN. QNH PRESSURE IN HPA 1012.5 1010.8 1006.1 1008.5 1005.1 996.7 993.7 997.3 1002.8 1008.7 1011.7 1018.2 993.7 DAY 8 5 2 7 17 24 12 7 10 8 11 31 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION DEHLORAN (40796) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 32 41 N LONGITUDE 47 16 E DATA PROCESSING CENTER ELEVATION 232.0 M MEANS AND EXTREMES FOR THE YEAR 1999 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 1500 UTC. MEAN QFE PRESSURE IN HPA 992.1 991.2 987.3 985.2 980.4 975.9 971.4 973.9 979.1 985.9 991.2 995.1 984.1 MAX. QFE PRESSURE IN HPA 997.4 995.6 992.8 989.9 988.2 980.5 975.4 978.9 985.1 990.2 996.7 999.2 999.2 DAY 10 22 18 10 1 6 1 18 30 29 15 3 MIN. QFE PRESSURE IN HPA 985.2 983.3 981.0 979.7 977.3 969.6 966.2 969.6 975.5 981.1 984.5 990.8 966.2 DAY 8 5 2 7 17 24 12 7 6 8 11 31 MEAN QNH PRESSURE IN HPA 1019.5 1018.6 1014.6 1012.4 1007.6 1002.9 998.3 1000.9 1006.3 1013.2 1018.6 1022.6 1011.3 MAX. QNH PRESSURE IN HPA 1024.9 1023.1 1020.2 1017.3 1015.5 1007.6 1002.4 1006.0 1012.4 1017.6 1024.2 1026.8 1026.8 DAY 10 22 18 10 1 6 1 18 30 29 15 3 MIN. QNH PRESSURE IN HPA 1012.5 1010.5 1008.2 1006.8 1004.4 996.5 993.0 996.5 1002.5 1008.3 1011.7 1018.2 993.0 DAY 8 5 2 7 17 24 12 7 6 8 11 31 MEAN QFF PRESSURE IN HPA 1019.7 1018.7 1014.4 1011.5 1005.9 1000.9 996.2 998.7 1004.5 1011.9 1018.4 1022.8 1010.3 MAX. QFF PRESSURE IN HPA 1025.3 1023.6 1020.3 1016.6 1014.4 1005.8 1000.4 1003.9 1010.8 1016.6 1024.6 1027.4 1027.4 DAY 10 22 18 10 1 6 1 18 30 29 29 3 MIN. QFF PRESSURE IN HPA 1012.3 1010.7 1008.2 1006.0 1002.6 994.5 990.7 994.2 1000.6 1006.5 1011.1 1018.3 990.7 DAY 8 5 2 7 17 24 12 7 10 8 11 31 PRESSURE AT HOUR 1800 UTC. MEAN QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** PRESSURE AT HOUR 2100 UTC. MEAN QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION DEHLORAN (40796) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 32 41 N LONGITUDE 47 16 E DATA PROCESSING CENTER ELEVATION 232.0 M MEANS AND EXTREMES FOR THE YEAR 2000 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AIR TEMPERATURE (C) 12.2 14.5 19.6 29.5 34.6 38.7 42.5 41.9 35.2 28.1 19.5 14.2 27.5 MINIMUN AIR TEMPERATURE (C) 7.3 8.1 11.8 21.5 25.7 28.6 33.8 32.2 25.6 19.7 12.8 9.6 19.7 DAYS WITH MINIMUM TEMP. >=21 0 0 2 16 28 30 31 31 30 8 0 0 176 DAYS WITH MINIMUM TEMP. <=-4 0 0 0 0 0 0 0 0 0 0 0 0 0 DAYS WITH FREEZING MIN.<= 0 0 0 0 0 0 0 0 0 0 0 0 0 0 TEMPERATURE RECORDS LOWEST(C) 2.8 3.6 5.4 12.8 18.6 24.8 30.2 22.8 22.2 15.4 8.0 5.2 2.8 DAY 18 8 10 11 11 6 4 31 2 23 22 28 MAXIMUM AIR TEMPERATURE (C) 15.7 18.6 24.2 34.1 39.2 43.7 47.3 47.1 40.7 32.9 24.0 17.7 32.1 DAYS WITH MAXIMUM TEMP. >=30 0 0 0 27 31 30 31 31 30 26 0 0 206 DAYS WITH MAXIMUM TEMP. <= 0 0 0 0 0 0 0 0 0 0 0 0 0 0 TEMPERATURE RECORDS HIGHEST(C) 22.0 23.6 29.6 39.0 43.5 50.0 50.6 49.0 43.2 36.8 29.2 22.0 50.6 DAY 1 24 18 14 25 30 1 2 9 11 1 5 DIF. BETWEEN (MAX.-MIN.) (C) 8.4 10.5 12.4 12.6 13.5 15.1 13.5 14.9 15.1 13.2 11.2 8.1 12.4 MEAN DAILY TEMP. (MDT) (C) 11.5 13.4 18.0 27.8 32.4 36.2 40.5 39.6 33.1 26.3 18.4 13.6 25.9 COOLING DEG. DAYS(BASE 21 0C) 0.0 0.0 17.1 202.8 354.4 455.8 605.6 577.6 363.8 163.6 3.2 0.0 2744.1 HEATING DEG. DAYS(BASE 18 0C) 201.5 136.7 50.8 0.0 0.0 0.0 0.0 0.0 0.0 0.0 15.9 135.2 539.9 DEWPOINT (MEAN C) 5.5 4.8 5.9 9.8 11.1 11.0 11.6 9.4 8.0 6.7 7.3 9.0 8.3 MIXING RATIO (G/KG) 5.85 5.56 6.24 8.04 8.89 8.78 9.25 8.08 7.09 6.56 6.67 7.41 7.37 VAPOUR PRESSURE (HPA) 9.23 8.79 9.80 12.56 13.82 13.57 14.24 12.48 11.05 10.29 10.52 11.70 11.50 SATURATION DEF. (HPA) 5.42 8.28 14.25 29.99 42.75 57.64 72.11 71.27 47.59 28.93 12.79 4.85 32.99 RELATIVE HUMIDITY (MEAN %) 66 55 43 31 25 20 18 16 20 28 48 73 37 RELATIVE HUMIDITY (MAX. %) 80 73 60 44 37 31 27 25 28 38 62 87 49 RELATIVE HUMIDITY (MIN. %) 53 40 33 23 19 15 12 11 14 20 37 58 28 RELATIVE HUMIDITY (MEAN% 03UTC) 78 71 57 43 37 31 26 24 28 37 60 83 48 RELATIVE HUMIDITY (MEAN% 09UTC) 58 48 38 26 23 16 15 13 18 25 41 65 32 RELATIVE HUMIDITY (MEAN% 15UTC) 69 53 39 27 22 17 14 13 16 26 48 75 35 RH=0 => RELATIVE HUMIDITY < 0.5% AMOUNT OF PRECIPITATION MM. 45.2 33.0 13.0 0.6 0.0 0.0 0.0 0.0 0.0 6.0 33.4 74.3 205.5 DAYS WITH PRECIPITATION >=10 2 2 0 0 0 0 0 0 0 0 2 2 8 DAYS WITH PRECIPITATION >= 5 2 2 1 0 0 0 0 0 0 0 2 6 13 DAYS WITH PRECIPITATION >= 1 5 3 3 0 0 0 0 0 0 3 2 10 26 DAYS WITH PRECIPITATION 10 3 3 4 0 0 0 0 0 3 3 11 37 GREATEST DAILY PRECIPITATION 24.0 21.0 8.0 0.4 0.0 0.0 0.0 0.0 0.0 4.0 21.0 21.0 24.0 DAY 6 14 23 17 ** ** ** ** ** 16 30 9 DAY WITH THUNDER STORM 0 0 0 1 0 0 0 0 0 0 0 0 1 DAYS WITH SNOW OR SLEET 0 0 0 0 0 0 0 0 0 0 0 0 0 DAYS WITH DUST 0 0 6 6 9 7 16 7 4 0 1 0 56 WIND DIRECTION (PREVAILING) 90 135 270 270 270 270 135 270 270 270 270 135 270 PREVAILING WIND SPEED(KNOTS) 7.4 5.1 5.3 5.0 7.4 13.9 9.4 11.8 10.7 8.1 6.8 8.6 8.9 PREVAILING WIND PERCENT 12.3 9.0 11.6 16.7 31.0 27.3 19.4 24.5 23.3 20.6 12.7 18.1 17.2 CALMS PERCENT OF WIND 63.9 71.0 65.8 62.0 49.7 40.0 25.8 29.0 40.0 32.9 50.0 39.4 47.3 NO. OF WIND OBSERVATION 155 145 155 150 155 150 155 155 150 155 150 155 1830 VECTOR WIND DIRECTION (MEAN) 117 143 123 266 256 267 158 262 243 233 149 115 222 VECTOR WIND MAGNITUDE(KNOTS) 1.0 0.3 0.5 0.8 2.5 4.0 2.0 3.4 2.3 1.4 1.4 3.1 1.0 WIND STEADINESES (MEAN %) 47.6 21.4 20.8 38.1 71.4 63.5 30.8 53.1 46.0 27.5 35.0 56.4 23.8 WIND SPEED (MEAN KNOTS) 2.1 1.4 2.4 2.1 3.5 6.3 6.5 6.4 5.0 5.1 4.0 5.5 4.2 FASTEST WIND DIRECTION 90 100 110 180 180 270 360 270 280 330 110 100 110 FASTEST WIND SPEED (KNOTS) 14 14 29 16 27 29 25 25 27 29 29 27 29 DAY 5 24 24 28 30 9 25 29 1 14 17 10 DAYS WITH SKY CLEAR (0-2)/8 16 18 24 10 26 29 27 29 26 22 17 15 259 DAYS WITH P.CLOUDY (3-6)/8 8 7 5 15 5 1 3 2 4 5 8 9 72 DAYS WITH CLOUDY (7-8)/8 7 4 2 5 0 0 0 0 0 4 5 7 34 DAYS WITH VISIBILITY =< 2 KM 3 0 3 3 5 6 13 2 1 0 0 3 39 DURATION OF SUNSHINE HOURS 192.9 222.7 266.2 211.3 331.2 345.6 246.8 332.0 285.7 260.7 202.1 175.0 3072.2 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION DEHLORAN (40796) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 32 41 N LONGITUDE 47 16 E DATA PROCESSING CENTER ELEVATION 232.0 M MEANS AND EXTREMES FOR THE YEAR 2000 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL MEAN QFE PRESSURE IN HPA 992.7 992.7 989.7 986.1 982.1 976.1 973.4 975.5 980.8 987.9 992.6 993.7 985.3 MAX. QFE PRESSURE IN HPA 1001.8 998.2 997.5 992.1 988.6 981.2 980.0 980.7 987.6 994.7 997.7 1000.8 1001.8 DAY-HOUR 30-15 29- 9 3- 6 1- 6 2- 6 17- 6 30- 6 14- 6 29- 6 30- 9 27- 6 17- 6 MIN. QFE PRESSURE IN HPA 981.2 983.6 977.0 980.2 977.1 971.4 965.9 969.9 972.9 982.6 987.1 985.0 965.9 DAY-HOUR 28-12 6-15 24- 3 14-15 30-15 23-15 10-15 11-15 2-15 1-12 6-12 10-15 MEAN QNH PRESSURE IN HPA 1020.1 1020.1 1017.0 1013.3 1009.3 1003.1 1000.4 1002.6 1007.9 1015.2 1020.0 1021.1 1012.5 MAX. QNH PRESSURE IN HPA 1029.4 1025.7 1025.0 1019.5 1015.9 1008.4 1007.1 1007.8 1014.9 1022.2 1025.2 1028.4 1029.4 DAY-HOUR 30-15 29- 9 3- 6 1- 6 2- 6 17- 6 30- 6 14- 6 29- 6 30- 9 27- 6 17- 6 MIN. QNH PRESSURE IN HPA 1008.4 1010.8 1004.1 1007.3 1004.2 998.3 992.7 996.8 999.9 1009.8 1014.4 1012.2 992.7 DAY-HOUR 28-12 6-15 24- 3 14-15 30-15 23-15 10-15 11-15 2-15 1-12 6-12 10-15 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY-HOUR **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY-HOUR **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** PRESSURE AT HOUR 0000 UTC. MEAN QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** PRESSURE AT HOUR 0300 UTC. MEAN QFE PRESSURE IN HPA 992.5 992.4 989.6 986.0 982.2 976.2 973.5 975.5 980.6 987.7 992.3 993.3 985.2 MAX. QFE PRESSURE IN HPA 999.1 996.9 995.1 991.2 987.2 980.1 979.1 980.2 986.4 993.0 995.9 999.9 999.9 DAY 31 29 3 2 2 17 31 14 29 30 27 17 MIN. QFE PRESSURE IN HPA 982.7 984.6 977.0 980.6 978.3 972.5 967.5 971.4 973.6 983.5 987.7 986.0 967.5 DAY 28 7 24 21 30 24 10 11 2 1 7 11 MEAN QNH PRESSURE IN HPA 1019.9 1019.9 1017.0 1013.2 1009.4 1003.2 1000.5 1002.5 1007.7 1015.0 1019.7 1020.7 1012.4 MAX. QNH PRESSURE IN HPA 1026.7 1024.4 1022.6 1018.6 1014.5 1007.2 1006.2 1007.3 1013.7 1020.4 1023.4 1027.5 1027.5 DAY 31 29 3 2 2 17 31 14 29 30 27 17 MIN. QNH PRESSURE IN HPA 1009.9 1011.8 1004.1 1007.8 1005.4 999.5 994.4 998.3 1000.6 1010.7 1015.0 1013.3 994.4 DAY 28 7 24 21 30 24 10 11 2 1 7 11 MEAN QFF PRESSURE IN HPA 1020.4 1020.2 1016.9 1012.1 1007.9 1001.3 998.2 1000.3 1006.2 1014.1 1019.5 1021.0 1011.5 MAX. QFF PRESSURE IN HPA 1027.4 1024.7 1023.1 1017.9 1013.4 1005.5 1003.9 1005.0 1012.1 1019.8 1023.4 1028.1 1028.1 DAY 31 29 3 2 2 17 31 14 29 29 27 17 MIN. QFF PRESSURE IN HPA 1009.8 1012.1 1003.1 1006.2 1003.7 997.5 991.9 996.1 999.2 1009.5 1014.4 1013.3 991.9 DAY 28 7 24 21 30 24 10 11 2 1 1 11 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION DEHLORAN (40796) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 32 41 N LONGITUDE 47 16 E DATA PROCESSING CENTER ELEVATION 232.0 M MEANS AND EXTREMES FOR THE YEAR 2000 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 0600 UTC. MEAN QFE PRESSURE IN HPA 993.6 993.8 990.9 987.4 983.4 977.0 974.4 976.8 981.9 989.1 993.7 994.6 986.4 MAX. QFE PRESSURE IN HPA 1000.5 998.1 997.5 992.1 988.6 981.2 980.0 980.7 987.6 994.5 997.7 1000.8 1000.8 DAY 31 10 3 1 2 17 30 14 29 30 27 17 MIN. QFE PRESSURE IN HPA 983.8 986.7 977.2 982.5 979.2 973.9 967.9 972.7 975.1 984.2 988.8 987.3 967.9 DAY 28 7 24 21 30 24 10 11 2 1 1 10 MEAN QNH PRESSURE IN HPA 1021.0 1021.2 1018.3 1014.7 1010.6 1004.0 1001.4 1003.8 1009.0 1016.5 1021.1 1022.1 1013.7 MAX. QNH PRESSURE IN HPA 1028.1 1025.6 1025.0 1019.5 1015.9 1008.4 1007.1 1007.8 1014.9 1022.0 1025.2 1028.4 1028.4 DAY 31 10 3 1 2 17 30 14 29 30 27 17 MIN. QNH PRESSURE IN HPA 1011.0 1014.0 1004.3 1009.7 1006.3 1000.9 994.8 999.7 1002.1 1011.4 1016.1 1014.6 994.8 DAY 28 7 24 21 30 24 10 11 2 1 1 10 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** PRESSURE AT HOUR 0900 UTC. MEAN QFE PRESSURE IN HPA 993.1 993.5 990.5 986.8 982.8 976.8 974.2 976.5 981.6 988.7 993.2 994.2 986.0 MAX. QFE PRESSURE IN HPA 1001.3 998.2 997.3 991.8 987.6 980.6 979.7 979.5 986.8 994.7 997.4 1000.3 1001.3 DAY 31 29 3 1 2 17 30 14 29 30 27 17 MIN. QFE PRESSURE IN HPA 983.0 987.3 978.7 982.2 978.6 973.7 967.6 972.6 974.8 983.9 988.6 987.1 967.6 DAY 28 7 24 14 30 24 10 11 2 1 1 10 MEAN QNH PRESSURE IN HPA 1020.6 1021.0 1017.9 1014.1 1010.0 1003.9 1001.2 1003.5 1008.7 1016.0 1020.6 1021.7 1013.3 MAX. QNH PRESSURE IN HPA 1028.9 1025.7 1024.8 1019.2 1014.9 1007.8 1006.8 1006.6 1014.1 1022.2 1024.9 1027.9 1028.9 DAY 31 29 3 1 2 17 30 14 29 30 27 17 MIN. QNH PRESSURE IN HPA 1010.2 1014.6 1005.8 1009.4 1005.7 1000.7 994.5 999.6 1001.8 1011.1 1015.9 1014.4 994.5 DAY 28 7 24 14 30 24 10 11 2 1 1 10 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** PRESSURE AT HOUR 1200 UTC. MEAN QFE PRESSURE IN HPA 992.0 991.9 988.8 985.4 981.5 975.6 973.0 974.9 980.2 987.1 991.9 993.0 984.6 MAX. QFE PRESSURE IN HPA 1001.2 996.5 995.1 989.6 986.0 979.1 978.4 977.9 985.1 992.8 995.6 999.2 1001.2 DAY 30 10 3 1 2 17 30 14 29 30 27 17 MIN. QFE PRESSURE IN HPA 981.2 985.1 978.3 981.6 977.3 972.5 966.6 970.8 973.3 982.6 987.1 986.1 966.6 DAY 28 6 23 15 30 24 10 11 2 1 6 10 MEAN QNH PRESSURE IN HPA 1019.4 1019.3 1016.1 1012.7 1008.7 1002.7 1000.0 1002.0 1007.3 1014.4 1019.3 1020.4 1011.8 MAX. QNH PRESSURE IN HPA 1028.8 1024.0 1022.6 1017.0 1013.3 1006.2 1005.5 1005.0 1012.4 1020.2 1023.1 1026.8 1028.8 DAY 30 10 3 1 2 17 30 14 29 30 27 17 MIN. QNH PRESSURE IN HPA 1008.4 1012.4 1005.4 1008.8 1004.4 999.5 993.4 997.7 1000.3 1009.8 1014.4 1013.4 993.4 DAY 28 6 23 15 30 24 10 11 2 1 6 10 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION DEHLORAN (40796) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 32 41 N LONGITUDE 47 16 E DATA PROCESSING CENTER ELEVATION 232.0 M MEANS AND EXTREMES FOR THE YEAR 2000 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 1500 UTC. MEAN QFE PRESSURE IN HPA 992.4 991.9 988.6 984.8 980.9 974.9 972.2 974.1 979.8 987.0 992.1 993.3 984.3 MAX. QFE PRESSURE IN HPA 1001.8 996.9 995.1 989.2 985.7 978.4 977.0 976.5 984.5 992.2 995.6 999.7 1001.8 DAY 30 10 3 12 2 16 30 13 22 30 11 17 MIN. QFE PRESSURE IN HPA 982.3 983.6 978.1 980.2 977.1 971.4 965.9 969.9 972.9 982.7 987.1 985.0 965.9 DAY 28 6 23 14 30 23 10 11 2 1 6 10 MEAN QNH PRESSURE IN HPA 1019.8 1019.3 1015.9 1012.0 1008.1 1002.0 999.1 1001.1 1006.9 1014.3 1019.5 1020.8 1011.6 MAX. QNH PRESSURE IN HPA 1029.4 1024.4 1022.6 1016.5 1013.0 1005.5 1004.1 1003.6 1011.7 1019.6 1023.1 1027.3 1029.4 DAY 30 10 3 12 2 16 30 13 22 30 11 17 MIN. QNH PRESSURE IN HPA 1009.5 1010.8 1005.2 1007.3 1004.2 998.3 992.7 996.8 999.9 1009.9 1014.4 1012.2 992.7 DAY 28 6 23 14 30 23 10 11 2 1 6 10 MEAN QFF PRESSURE IN HPA 1020.3 1019.7 1015.7 1010.9 1006.5 1000.1 996.8 998.9 1005.4 1013.3 1019.3 1021.0 1010.7 MAX. QFF PRESSURE IN HPA 1030.2 1024.9 1023.0 1015.8 1011.9 1003.8 1001.8 1001.3 1010.3 1019.1 1023.1 1027.8 1030.2 DAY 30 10 3 12 10 16 30 13 22 30 28 17 MIN. QFF PRESSURE IN HPA 1009.4 1011.2 1004.3 1005.7 1002.4 996.3 990.3 994.4 998.4 1008.9 1014.1 1012.1 990.3 DAY 28 6 23 20 30 23 10 11 2 1 6 10 PRESSURE AT HOUR 1800 UTC. MEAN QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** PRESSURE AT HOUR 2100 UTC. MEAN QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION DEHLORAN (40796) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 32 41 N LONGITUDE 47 16 E DATA PROCESSING CENTER ELEVATION 232.0 M MEANS AND EXTREMES FOR THE YEAR 2001 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AIR TEMPERATURE (C) 12.8 15.1 21.5 27.9 34.0 38.9 40.8 41.6 36.5 30.3 20.4 16.6 28.0 MINIMUN AIR TEMPERATURE (C) 7.6 8.9 14.6 19.8 25.0 29.3 31.6 32.6 27.6 22.8 13.5 12.5 20.5 DAYS WITH MINIMUM TEMP. >=21 0 0 0 11 26 30 31 31 30 25 1 0 185 DAYS WITH MINIMUM TEMP. <=-4 0 0 0 0 0 0 0 0 0 0 0 0 0 DAYS WITH FREEZING MIN.<= 0 0 0 0 0 0 0 0 0 0 0 0 0 0 TEMPERATURE RECORDS LOWEST(C) 2.0 4.2 11.2 14.4 19.2 25.2 27.8 29.6 23.6 17.0 4.6 5.8 2.0 DAY 27 22 26 13 4 9 6 19 15 31 20 23 MAXIMUM AIR TEMPERATURE (C) 17.0 19.4 26.2 33.5 38.8 44.1 46.0 47.1 41.8 35.2 25.3 20.1 32.9 DAYS WITH MAXIMUM TEMP. >=30 0 0 3 27 31 30 31 31 30 30 6 0 219 DAYS WITH MAXIMUM TEMP. <= 0 0 0 0 0 0 0 0 0 0 0 0 0 0 TEMPERATURE RECORDS HIGHEST(C) 20.8 26.0 33.8 38.6 45.2 48.0 48.7 50.0 46.4 39.0 34.6 23.8 50.0 DAY 2 28 31 25 15 4 28 3 3 5 5 29 DIF. BETWEEN (MAX.-MIN.) (C) 9.4 10.5 11.6 13.7 13.8 14.8 14.4 14.5 14.2 12.4 11.8 7.6 12.4 MEAN DAILY TEMP. (MDT) (C) 12.3 14.2 20.4 26.7 31.9 36.7 38.8 39.9 34.7 29.0 19.4 16.3 26.7 COOLING DEG. DAYS(BASE 21 0C) 0.0 0.0 18.9 169.8 338.3 471.2 551.6 584.6 410.9 247.1 34.0 0.0 2826.6 HEATING DEG. DAYS(BASE 18 0C) 176.9 107.8 3.9 0.0 0.0 0.0 0.0 0.0 0.0 0.0 41.4 58.9 388.7 DEWPOINT (MEAN C) 5.8 4.9 8.9 6.4 7.1 10.8 10.4 11.2 14.4 8.0 1.5 10.5 8.3 MIXING RATIO (G/KG) 5.93 5.59 7.38 6.28 6.70 8.94 8.30 8.91 11.49 7.10 4.52 8.29 7.45 VAPOUR PRESSURE (HPA) 9.38 8.83 11.59 9.85 10.44 13.78 12.81 13.78 17.73 11.13 7.15 13.05 11.63 SATURATION DEF. (HPA) 5.78 8.92 15.00 29.25 44.88 58.21 66.33 69.07 45.16 33.34 18.37 6.20 33.38 RELATIVE HUMIDITY (MEAN %) 65 53 48 28 21 20 17 18 29 27 31 69 36 RELATIVE HUMIDITY (MAX. %) 81 72 66 43 32 30 26 25 37 37 42 83 48 RELATIVE HUMIDITY (MIN. %) 50 39 35 20 15 15 13 12 24 19 21 54 26 RELATIVE HUMIDITY (MEAN% 03UTC) 77 70 63 42 32 30 26 24 36 36 41 80 46 RELATIVE HUMIDITY (MEAN% 09UTC) 57 46 41 23 17 17 14 16 27 23 25 65 31 RELATIVE HUMIDITY (MEAN% 15UTC) 65 47 41 22 17 17 14 14 29 26 30 69 33 RH=0 => RELATIVE HUMIDITY < 0.5% AMOUNT OF PRECIPITATION MM. 59.2 21.2 39.0 3.2 6.5 0.0 0.0 0.0 0.0 5.9 0.1 95.7 230.8 DAYS WITH PRECIPITATION >=10 2 1 1 0 0 0 0 0 0 0 0 4 8 DAYS WITH PRECIPITATION >= 5 2 2 5 0 1 0 0 0 0 0 0 7 17 DAYS WITH PRECIPITATION >= 1 5 4 6 1 1 0 0 0 0 2 0 8 27 DAYS WITH PRECIPITATION 8 6 8 4 3 0 0 0 0 3 1 10 43 GREATEST DAILY PRECIPITATION 29.0 13.0 13.4 2.0 6.0 0.0 0.0 0.0 0.0 4.0 0.1 31.0 31.0 DAY 26 11 15 9 4 ** ** ** ** 28 18 4 DAY WITH THUNDER STORM 0 0 1 0 0 0 0 0 0 0 0 0 1 DAYS WITH SNOW OR SLEET 0 0 0 0 0 0 0 0 0 0 0 0 0 DAYS WITH DUST 0 0 0 0 2 7 10 4 5 2 3 0 33 WIND DIRECTION (PREVAILING) 270 135 90 270 270 270 270 270 270 270 270 90 270 PREVAILING WIND SPEED(KNOTS) 6.8 10.0 11.5 11.3 13.0 13.4 12.9 11.2 9.8 8.7 7.0 11.8 10.4 PREVAILING WIND PERCENT 19.4 18.6 18.1 22.7 33.5 38.0 27.1 19.4 25.3 14.8 20.7 20.0 21.8 CALMS PERCENT OF WIND 47.7 28.6 33.5 27.3 16.8 20.7 22.6 29.7 23.3 29.0 40.0 33.5 29.4 NO. OF WIND OBSERVATION 155 140 155 150 155 150 155 155 150 155 150 155 1825 VECTOR WIND DIRECTION (MEAN) 154 125 124 259 270 268 248 228 231 173 192 117 226 VECTOR WIND MAGNITUDE(KNOTS) 0.6 3.0 2.3 2.8 4.6 5.5 3.7 1.9 2.7 1.5 1.2 2.5 1.5 WIND STEADINESES (MEAN %) 15.0 44.8 45.1 45.2 52.9 71.4 50.7 31.1 45.0 27.8 28.6 48.1 24.6 WIND SPEED (MEAN KNOTS) 4.0 6.7 5.1 6.2 8.7 7.7 7.3 6.1 6.0 5.4 4.2 5.2 6.1 FASTEST WIND DIRECTION 110 90 90 40 150 280 280 310 270 280 270 90 310 FASTEST WIND SPEED (KNOTS) 21 33 25 35 33 29 27 39 25 29 27 31 39 DAY 3 9 8 29 2 18 17 10 10 1 18 4 DAYS WITH SKY CLEAR (0-2)/8 24 18 20 21 21 30 31 28 29 25 21 16 284 DAYS WITH P.CLOUDY (3-6)/8 4 7 6 7 9 0 0 3 1 6 6 10 59 DAYS WITH CLOUDY (7-8)/8 3 3 5 2 1 0 0 0 0 0 3 5 22 DAYS WITH VISIBILITY =< 2 KM 0 0 0 0 1 0 0 1 0 0 0 2 4 DURATION OF SUNSHINE HOURS 234.5 223.5 251.3 280.1 306.3 381.0 377.7 348.2 316.7 281.4 221.5 161.9 3384.1 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION DEHLORAN (40796) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 32 41 N LONGITUDE 47 16 E DATA PROCESSING CENTER ELEVATION 232.0 M MEANS AND EXTREMES FOR THE YEAR 2001 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL MEAN QFE PRESSURE IN HPA 994.0 992.1 988.5 986.2 980.8 974.7 973.0 976.4 981.5 986.9 992.1 994.1 985.0 MAX. QFE PRESSURE IN HPA 1000.2 997.1 996.5 993.5 988.9 982.3 977.5 980.2 987.4 991.8 1000.4 1001.8 1001.8 DAY-HOUR 30- 6 1- 6 1- 6 1- 9 5- 6 1- 9 28- 6 5- 6 23- 9 31- 6 20- 6 22- 6 MIN. QFE PRESSURE IN HPA 987.3 982.8 977.1 980.1 973.4 970.0 969.3 971.8 976.5 979.6 981.3 983.8 969.3 DAY-HOUR 3-15 18-12 24-15 25-15 29-15 16-15 18-15 24-15 2-15 1-12 17-15 4-15 MEAN QNH PRESSURE IN HPA 1021.5 1019.5 1015.9 1013.5 1008.0 1001.7 1000.0 1003.4 1008.7 1014.2 1019.5 1021.6 1012.3 MAX. QNH PRESSURE IN HPA 1027.8 1024.6 1024.0 1020.9 1016.2 1009.5 1004.6 1007.3 1014.7 1019.2 1028.0 1029.4 1029.4 DAY-HOUR 30- 6 1- 6 1- 6 1- 9 5- 6 1- 9 28- 6 5- 6 23- 9 31- 6 20- 6 22- 6 MIN. QNH PRESSURE IN HPA 1014.6 1010.0 1004.2 1007.2 1000.4 996.9 996.2 998.7 1003.6 1006.7 1008.5 1011.0 996.2 DAY-HOUR 3-15 18-12 24-15 25-15 29-15 16-15 18-15 24-15 2-15 1-12 17-15 4-15 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY-HOUR **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY-HOUR **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** PRESSURE AT HOUR 0000 UTC. MEAN QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** PRESSURE AT HOUR 0300 UTC. MEAN QFE PRESSURE IN HPA 993.7 991.9 988.2 986.0 980.8 974.5 973.0 976.2 981.4 986.7 992.0 994.0 984.9 MAX. QFE PRESSURE IN HPA 999.2 995.8 995.1 990.9 986.4 981.6 976.1 979.4 986.2 990.3 998.7 1000.4 1000.4 DAY 30 16 1 1 5 1 28 6 23 24 20 22 MIN. QFE PRESSURE IN HPA 988.6 984.4 977.6 980.3 975.1 970.1 970.3 972.9 977.3 980.1 981.3 985.8 970.1 DAY 3 21 25 26 29 16 17 24 3 1 18 5 MEAN QNH PRESSURE IN HPA 1021.1 1019.3 1015.6 1013.3 1007.9 1001.5 1000.0 1003.3 1008.6 1014.0 1019.4 1021.5 1012.1 MAX. QNH PRESSURE IN HPA 1026.8 1023.3 1022.6 1018.3 1013.7 1008.8 1003.1 1006.5 1013.5 1017.7 1026.3 1028.0 1028.0 DAY 30 16 1 1 5 1 28 6 23 24 20 22 MIN. QNH PRESSURE IN HPA 1015.9 1011.6 1004.7 1007.4 1002.1 997.0 997.2 999.9 1004.4 1007.2 1008.5 1013.1 997.0 DAY 3 21 25 26 29 16 17 24 3 1 18 5 MEAN QFF PRESSURE IN HPA 1021.5 1019.6 1015.2 1012.3 1006.4 999.6 997.9 1001.1 1006.8 1012.8 1019.2 1021.5 1011.2 MAX. QFF PRESSURE IN HPA 1027.6 1023.6 1022.3 1017.2 1012.4 1007.2 1000.8 1004.3 1011.6 1017.1 1027.1 1028.6 1028.6 DAY 30 16 1 1 5 1 28 6 23 31 20 22 MIN. QFF PRESSURE IN HPA 1015.9 1011.7 1004.1 1006.2 1000.0 994.9 995.0 997.8 1002.5 1005.6 1007.9 1013.1 994.9 DAY 3 21 25 26 29 16 17 24 3 1 18 5 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION DEHLORAN (40796) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 32 41 N LONGITUDE 47 16 E DATA PROCESSING CENTER ELEVATION 232.0 M MEANS AND EXTREMES FOR THE YEAR 2001 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 0600 UTC. MEAN QFE PRESSURE IN HPA 994.9 993.3 989.7 987.5 981.9 975.7 974.0 977.6 982.8 988.1 993.4 995.3 986.2 MAX. QFE PRESSURE IN HPA 1000.2 997.1 996.5 993.3 988.9 982.2 977.5 980.2 987.3 991.8 1000.4 1001.8 1001.8 DAY 30 1 1 1 5 1 28 5 22 31 20 22 MIN. QFE PRESSURE IN HPA 989.9 985.6 978.4 982.0 976.3 972.1 971.1 973.9 978.7 981.1 982.2 987.3 971.1 DAY 19 21 25 26 29 16 17 24 2 1 18 5 MEAN QNH PRESSURE IN HPA 1022.4 1020.8 1017.1 1014.8 1009.1 1002.8 1001.0 1004.7 1010.0 1015.5 1020.9 1022.7 1013.5 MAX. QNH PRESSURE IN HPA 1027.8 1024.6 1024.0 1020.7 1016.2 1009.4 1004.6 1007.3 1014.6 1019.2 1028.0 1029.4 1029.4 DAY 30 1 1 1 5 1 28 5 22 31 20 22 MIN. QNH PRESSURE IN HPA 1017.3 1012.9 1005.5 1009.2 1003.3 999.1 998.0 1000.9 1005.8 1008.3 1009.4 1014.6 998.0 DAY 19 21 25 26 29 16 17 24 2 1 18 5 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** PRESSURE AT HOUR 0900 UTC. MEAN QFE PRESSURE IN HPA 994.8 993.1 989.5 987.1 981.7 975.6 973.8 977.3 982.4 987.6 992.7 994.7 985.8 MAX. QFE PRESSURE IN HPA 1000.2 997.0 996.1 993.5 987.0 982.3 977.1 979.5 987.4 991.4 998.9 1000.9 1000.9 DAY 30 10 4 1 5 1 29 31 23 31 20 22 MIN. QFE PRESSURE IN HPA 989.4 984.8 978.1 982.5 975.7 971.9 970.9 973.4 978.1 980.4 982.1 987.2 970.9 DAY 19 18 25 26 29 16 18 24 2 1 18 5 MEAN QNH PRESSURE IN HPA 1022.3 1020.5 1016.8 1014.4 1008.8 1002.6 1000.8 1004.3 1009.6 1014.9 1020.1 1022.1 1013.1 MAX. QNH PRESSURE IN HPA 1027.8 1024.5 1023.6 1020.9 1014.3 1009.5 1004.2 1006.6 1014.7 1018.8 1026.5 1028.5 1028.5 DAY 30 10 4 1 5 1 29 31 23 31 20 22 MIN. QNH PRESSURE IN HPA 1016.7 1012.0 1005.2 1009.7 1002.7 998.9 997.8 1000.4 1005.2 1007.5 1009.3 1014.5 997.8 DAY 19 18 25 26 29 16 18 24 2 1 18 5 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** PRESSURE AT HOUR 1200 UTC. MEAN QFE PRESSURE IN HPA 993.3 991.2 987.9 985.5 980.3 974.3 972.5 975.8 980.8 986.1 991.2 993.4 984.4 MAX. QFE PRESSURE IN HPA 998.2 995.4 993.9 991.6 984.9 980.1 975.2 978.4 985.5 990.3 998.2 999.6 999.6 DAY 30 24 4 1 5 1 7 31 23 31 20 22 MIN. QFE PRESSURE IN HPA 988.1 982.8 977.8 981.2 974.6 970.7 969.5 973.1 976.7 979.6 982.1 985.2 969.5 DAY 3 18 25 25 29 16 18 24 2 1 17 4 MEAN QNH PRESSURE IN HPA 1020.8 1018.6 1015.2 1012.8 1007.4 1001.3 999.5 1002.8 1007.9 1013.4 1018.6 1020.8 1011.6 MAX. QNH PRESSURE IN HPA 1025.7 1022.9 1021.3 1019.0 1012.1 1007.2 1002.2 1005.5 1012.8 1017.7 1025.7 1027.2 1027.2 DAY 30 24 4 1 5 1 7 31 23 31 20 22 MIN. QNH PRESSURE IN HPA 1015.4 1010.0 1004.9 1008.4 1001.6 997.6 996.4 1000.1 1003.8 1006.7 1009.3 1012.5 996.4 DAY 3 18 25 25 29 16 18 24 2 1 17 4 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION DEHLORAN (40796) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 32 41 N LONGITUDE 47 16 E DATA PROCESSING CENTER ELEVATION 232.0 M MEANS AND EXTREMES FOR THE YEAR 2001 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 1500 UTC. MEAN QFE PRESSURE IN HPA 993.6 991.0 987.5 985.1 979.6 973.6 971.9 975.0 980.4 986.0 991.4 993.4 984.0 MAX. QFE PRESSURE IN HPA 998.9 995.1 993.5 991.3 983.7 979.4 974.4 978.0 984.8 990.7 998.1 999.6 999.6 DAY 30 24 1 1 5 1 20 31 23 31 19 22 MIN. QFE PRESSURE IN HPA 987.3 983.6 977.1 980.1 973.4 970.0 969.3 971.8 976.5 980.9 981.3 983.8 969.3 DAY 3 18 24 25 29 16 18 24 2 1 17 4 MEAN QNH PRESSURE IN HPA 1021.0 1018.4 1014.8 1012.3 1006.7 1000.6 998.8 1002.0 1007.6 1013.3 1018.8 1020.8 1011.3 MAX. QNH PRESSURE IN HPA 1026.5 1022.6 1020.9 1018.7 1010.9 1006.5 1001.4 1005.1 1012.0 1018.1 1025.6 1027.2 1027.2 DAY 30 24 1 1 5 1 20 31 23 31 19 22 MIN. QNH PRESSURE IN HPA 1014.6 1010.8 1004.2 1007.2 1000.4 996.9 996.2 998.7 1003.6 1008.1 1008.5 1011.0 996.2 DAY 3 18 24 25 29 16 18 24 2 1 17 4 MEAN QFF PRESSURE IN HPA 1021.4 1018.5 1014.3 1011.4 1005.2 998.6 996.7 999.8 1005.8 1012.1 1018.6 1020.8 1010.3 MAX. QFF PRESSURE IN HPA 1027.2 1022.9 1020.6 1017.6 1009.7 1004.9 999.4 1003.1 1010.1 1017.6 1026.5 1027.8 1027.8 DAY 30 24 1 1 5 1 20 31 23 31 19 22 MIN. QFF PRESSURE IN HPA 1014.6 1010.7 1003.5 1005.8 998.3 994.9 994.2 996.7 1001.7 1006.6 1007.9 1010.9 994.2 DAY 3 18 24 25 29 16 18 24 2 1 17 4 PRESSURE AT HOUR 1800 UTC. MEAN QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** PRESSURE AT HOUR 2100 UTC. MEAN QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION DEHLORAN (40796) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 32 41 N LONGITUDE 47 16 E DATA PROCESSING CENTER ELEVATION 232.0 M MEANS AND EXTREMES FOR THE YEAR 2002 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AIR TEMPERATURE (C) 11.8 15.8 21.1 24.2 31.5 36.9 39.7 38.2 35.2 30.0 19.9 13.0 26.4 MINIMUN AIR TEMPERATURE (C) 7.2 9.3 13.8 17.2 23.7 27.7 30.3 30.1 27.0 23.7 14.4 9.4 19.5 DAYS WITH MINIMUM TEMP. >=21 0 0 1 7 26 28 31 31 30 26 0 0 180 DAYS WITH MINIMUM TEMP. <=-4 0 0 0 0 0 0 0 0 0 0 0 0 0 DAYS WITH FREEZING MIN.<= 0 0 0 0 0 0 0 0 0 0 0 0 0 0 TEMPERATURE RECORDS LOWEST(C) 3.0 4.8 8.2 11.0 18.6 19.8 24.6 27.0 24.0 18.0 10.0 2.0 2.0 DAY 24 1 1 4 5 4 12 24 20 25 29 14 MAXIMUM AIR TEMPERATURE (C) 15.3 19.9 25.5 28.2 37.6 43.3 46.2 45.5 42.7 37.2 26.4 18.0 32.2 DAYS WITH MAXIMUM TEMP. >=30 0 0 2 11 31 30 31 31 30 31 3 0 200 DAYS WITH MAXIMUM TEMP. <= 0 0 0 0 0 0 0 0 0 0 0 0 0 0 TEMPERATURE RECORDS HIGHEST(C) 18.6 23.6 31.5 38.5 43.5 46.5 48.5 48.5 46.5 42.4 30.4 23.8 48.5 DAY 3 24 26 28 27 17 19 11 2 8 10 5 DIF. BETWEEN (MAX.-MIN.) (C) 8.1 10.6 11.7 11.0 13.9 15.6 15.9 15.4 15.7 13.5 12.0 8.6 12.7 MEAN DAILY TEMP. (MDT) (C) 11.3 14.6 19.7 22.7 30.6 35.5 38.3 37.8 34.9 30.4 20.4 13.7 25.8 COOLING DEG. DAYS(BASE 21 0C) 0.0 0.0 19.1 74.3 298.3 435.2 535.5 521.7 415.8 292.7 20.3 0.0 2613.0 HEATING DEG. DAYS(BASE 18 0C) 209.2 95.1 14.6 4.4 0.0 0.0 0.0 0.0 0.0 0.0 6.6 138.1 468.0 DEWPOINT (MEAN C) 6.7 5.1 6.2 9.9 14.2 12.2 14.9 11.8 9.2 6.2 9.0 7.2 9.4 MIXING RATIO (G/KG) 6.35 5.74 6.37 8.02 10.98 9.57 11.18 9.13 7.66 6.15 7.45 6.74 7.94 VAPOUR PRESSURE (HPA) 10.05 9.08 10.00 12.54 17.00 14.78 17.20 14.09 11.94 9.65 11.73 10.64 12.39 SATURATION DEF. (HPA) 4.08 9.42 16.02 19.15 30.97 49.77 57.25 55.13 46.99 34.28 12.16 4.86 28.34 RELATIVE HUMIDITY (MEAN %) 73 53 42 45 37 24 24 22 21 24 52 69 41 RELATIVE HUMIDITY (MAX. %) 87 71 58 65 48 33 35 32 30 31 67 83 53 RELATIVE HUMIDITY (MIN. %) 58 39 30 33 28 16 16 14 14 16 35 52 29 RELATIVE HUMIDITY (MEAN% 03UTC) 82 69 56 62 44 31 32 30 27 28 62 78 50 RELATIVE HUMIDITY (MEAN% 09UTC) 69 48 37 39 31 19 19 18 18 18 41 59 35 RELATIVE HUMIDITY (MEAN% 15UTC) 74 46 37 40 33 19 18 15 17 21 47 65 36 RH=0 => RELATIVE HUMIDITY < 0.5% AMOUNT OF PRECIPITATION MM. 67.9 19.6 31.3 76.1 4.0 0.0 0.0 0.0 0.0 1.4 22.0 40.5 262.8 DAYS WITH PRECIPITATION >=10 2 1 2 3 0 0 0 0 0 0 1 1 10 DAYS WITH PRECIPITATION >= 5 6 1 3 6 0 0 0 0 0 0 1 1 18 DAYS WITH PRECIPITATION >= 1 9 3 4 9 1 0 0 0 0 0 4 3 33 DAYS WITH PRECIPITATION 11 5 8 9 1 0 0 0 0 2 5 6 47 GREATEST DAILY PRECIPITATION 15.0 15.0 11.0 18.0 4.0 0.0 0.0 0.0 0.0 0.7 13.0 34.0 34.0 DAY 7 20 17 20 3 ** ** ** ** 20 13 1 DAY WITH THUNDER STORM 0 0 0 0 2 0 0 0 0 2 6 3 13 DAYS WITH SNOW OR SLEET 0 0 0 0 0 0 0 0 0 0 0 0 0 DAYS WITH DUST 1 1 2 4 1 3 2 8 7 0 0 0 29 WIND DIRECTION (PREVAILING) 90 90 90 90 270 270 270 270 270 315 90 90 270 PREVAILING WIND SPEED(KNOTS) 11.4 15.5 14.1 12.4 10.5 11.3 11.3 11.3 9.7 6.6 9.8 10.8 9.7 PREVAILING WIND PERCENT 16.1 15.7 23.2 24.3 27.0 29.2 31.5 29.0 28.8 11.7 12.1 15.3 19.9 CALMS PERCENT OF WIND 36.8 33.6 31.0 23.0 27.0 22.1 22.6 26.2 35.4 32.7 41.3 35.1 30.4 NO. OF WIND OBSERVATION 155 140 155 152 248 240 248 248 240 248 240 248 2562 VECTOR WIND DIRECTION (MEAN) 128 122 114 113 280 273 277 279 283 293 113 104 260 VECTOR WIND MAGNITUDE(KNOTS) 1.3 2.3 3.4 2.0 3.6 3.9 4.9 4.0 3.4 1.0 1.0 1.5 0.9 WIND STEADINESES (MEAN %) 29.5 41.1 52.3 28.6 57.1 58.2 72.1 64.5 68.0 23.3 26.3 32.6 16.1 WIND SPEED (MEAN KNOTS) 4.4 5.6 6.5 7.0 6.3 6.7 6.8 6.2 5.0 4.3 3.8 4.6 5.6 FASTEST WIND DIRECTION 110 90 90 90 260 260 270 280 270 20 90 90 90 FASTEST WIND SPEED (KNOTS) 19 27 31 25 21 23 23 23 23 23 29 27 31 DAY 6 12 18 2 4 3 1 6 17 8 25 21 DAYS WITH SKY CLEAR (0-2)/8 17 17 16 10 24 30 31 31 30 24 20 8 258 DAYS WITH P.CLOUDY (3-6)/8 3 7 10 9 6 0 0 0 0 5 8 16 64 DAYS WITH CLOUDY (7-8)/8 11 4 5 11 1 0 0 0 0 2 2 7 43 DAYS WITH VISIBILITY =< 2 KM 3 0 1 1 0 0 0 0 0 0 0 0 5 DURATION OF SUNSHINE HOURS 173.4 211.5 238.0 187.8 321.5 370.9 381.1 366.3 321.9 247.2 228.2 143.3 3191.1 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION DEHLORAN (40796) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 32 41 N LONGITUDE 47 16 E DATA PROCESSING CENTER ELEVATION 232.0 M MEANS AND EXTREMES FOR THE YEAR 2002 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL MEAN QFE PRESSURE IN HPA 994.7 993.8 989.2 986.0 982.1 976.9 975.0 975.1 981.8 987.2 992.1 993.7 985.6 MAX. QFE PRESSURE IN HPA 1001.3 1003.7 997.6 992.0 987.4 984.0 978.6 982.1 988.5 992.7 998.1 1003.3 1003.7 DAY-HOUR 25- 6 1- 6 12- 6 6- 6 17- 6 7- 6 26- 6 29-18 21- 6 26- 6 29- 6 14- 6 MIN. QFE PRESSURE IN HPA 985.1 984.6 980.0 980.3 977.9 971.1 969.0 969.4 977.5 982.3 984.2 982.0 969.0 DAY-HOUR 21-12 25- 3 26-15 3- 3 28-15 17-15 23-15 14-15 7-15 13-12 12-15 21- 3 MEAN QNH PRESSURE IN HPA 1022.1 1021.2 1016.6 1013.3 1009.3 1004.0 1002.0 1002.1 1009.0 1014.5 1019.5 1021.2 1012.9 MAX. QNH PRESSURE IN HPA 1028.9 1031.4 1025.1 1019.4 1014.7 1011.2 1005.7 1009.3 1015.8 1020.1 1025.6 1031.0 1031.4 DAY-HOUR 25- 6 1- 6 12- 6 6- 6 17- 6 7- 6 26- 6 29-18 21- 6 26- 6 29- 6 14- 6 MIN. QNH PRESSURE IN HPA 1012.4 1011.8 1007.1 1007.4 1005.0 998.0 995.9 996.3 1004.6 1009.5 1011.4 1009.2 995.9 DAY-HOUR 21-12 25- 3 26-15 3- 3 28-15 17-15 23-15 14-15 7-15 13-12 12-15 21- 3 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** 1007.7 1002.0 999.7 1000.0 1007.2 1013.2 1019.1 1021.4 ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** 1013.3 1009.6 1003.6 1007.4 1014.1 1019.4 1025.7 1031.9 ****** DAY-HOUR **-** **-** **-** **-** 17- 6 7- 6 26- 6 29-18 21- 6 26- 6 29- 6 14- 6 MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** 1003.1 995.9 993.4 994.1 1002.8 1007.9 1010.7 1009.1 ****** DAY-HOUR **-** **-** **-** **-** 28-21 17-15 23-15 14-15 7-15 13-12 12-15 21- 3 PRESSURE AT HOUR 0000 UTC. MEAN QFE PRESSURE IN HPA ****** ****** ****** ****** 981.5 976.5 974.5 974.5 981.2 986.8 991.9 993.5 ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** ****** 984.8 982.5 977.7 980.3 986.3 991.3 995.8 1001.6 ****** DAY ** ** ** ** 16 7 1 30 21 27 29 14 MIN. QFE PRESSURE IN HPA ****** ****** ****** ****** 978.1 971.9 969.0 970.2 978.1 982.4 985.5 983.1 ****** DAY ** ** ** ** 29 17 24 14 9 13 13 21 MEAN QNH PRESSURE IN HPA ****** ****** ****** ****** 1008.6 1003.5 1001.6 1001.5 1008.4 1014.1 1019.3 1021.0 ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** ****** 1012.0 1009.7 1004.8 1007.4 1013.6 1018.7 1023.3 1029.2 ****** DAY ** ** ** ** 16 7 1 30 21 27 29 14 MIN. QNH PRESSURE IN HPA ****** ****** ****** ****** 1005.2 998.9 995.9 997.1 1005.2 1009.6 1012.8 1010.3 ****** DAY ** ** ** ** 29 17 24 14 9 13 13 21 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** 1007.1 1001.5 999.3 999.3 1006.5 1012.7 1018.8 1021.1 ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** 1010.6 1008.1 1002.6 1005.4 1011.8 1017.7 1023.2 1030.0 ****** DAY ** ** ** ** 17 7 1 30 21 27 29 14 MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** 1003.3 996.7 993.5 994.8 1003.3 1008.0 1012.1 1010.2 ****** DAY ** ** ** ** 29 17 24 14 9 13 13 21 PRESSURE AT HOUR 0300 UTC. MEAN QFE PRESSURE IN HPA 994.3 993.6 989.1 985.9 982.0 977.1 975.2 975.0 981.9 987.2 992.0 993.5 985.6 MAX. QFE PRESSURE IN HPA 999.6 1001.9 996.2 991.1 986.1 983.1 977.6 980.6 987.1 990.7 996.9 1002.3 1002.3 DAY 25 1 12 1 17 7 3 30 21 26 29 14 MIN. QFE PRESSURE IN HPA 988.6 984.6 981.6 980.3 979.1 972.4 970.2 970.9 978.5 983.0 986.4 982.0 970.2 DAY 11 25 27 3 29 17 23 14 7 13 13 21 MEAN QNH PRESSURE IN HPA 1021.7 1021.0 1016.4 1013.2 1009.2 1004.2 1002.2 1002.1 1009.0 1014.5 1019.4 1020.9 1012.8 MAX. QNH PRESSURE IN HPA 1027.2 1029.5 1023.7 1018.5 1013.4 1010.3 1004.7 1007.8 1014.4 1018.1 1024.4 1029.9 1029.9 DAY 25 1 12 1 17 7 3 30 21 26 29 14 MIN. QNH PRESSURE IN HPA 1015.9 1011.8 1008.8 1007.4 1006.2 999.4 997.1 997.8 1005.6 1010.2 1013.7 1009.2 997.1 DAY 11 25 27 3 29 17 23 14 7 13 13 21 MEAN QFF PRESSURE IN HPA 1022.2 1021.2 1016.1 1012.5 1007.7 1002.2 1000.0 1000.1 1007.3 1013.3 1019.1 1021.2 1011.9 MAX. QFF PRESSURE IN HPA 1028.0 1030.3 1023.3 1018.2 1012.1 1008.9 1002.7 1006.0 1012.8 1017.3 1024.6 1030.8 1030.8 DAY 25 1 12 1 17 7 3 30 21 26 29 14 MIN. QFF PRESSURE IN HPA 1016.2 1011.5 1007.7 1007.0 1004.2 997.2 994.6 995.6 1003.9 1008.8 1013.1 1009.1 994.6 DAY 7 25 27 3 29 17 23 14 7 13 13 21 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION DEHLORAN (40796) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 32 41 N LONGITUDE 47 16 E DATA PROCESSING CENTER ELEVATION 232.0 M MEANS AND EXTREMES FOR THE YEAR 2002 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 0600 UTC. MEAN QFE PRESSURE IN HPA 995.5 995.0 990.4 986.8 983.2 978.0 976.0 976.1 983.2 988.6 993.4 994.7 986.8 MAX. QFE PRESSURE IN HPA 1001.3 1003.7 997.6 992.0 987.4 984.0 978.6 982.1 988.5 992.7 998.1 1003.3 1003.7 DAY 25 1 12 6 17 7 26 30 21 26 29 14 MIN. QFE PRESSURE IN HPA 988.2 986.2 982.7 982.2 979.7 973.2 971.1 971.7 979.8 984.4 988.1 982.8 971.1 DAY 11 25 28 3 20 17 23 14 7 13 12 21 MEAN QNH PRESSURE IN HPA 1023.0 1022.5 1017.8 1014.1 1010.4 1005.1 1003.1 1003.1 1010.4 1015.9 1020.9 1022.2 1014.0 MAX. QNH PRESSURE IN HPA 1028.9 1031.4 1025.1 1019.4 1014.7 1011.2 1005.7 1009.3 1015.8 1020.1 1025.6 1031.0 1031.4 DAY 25 1 12 6 17 7 26 30 21 26 29 14 MIN. QNH PRESSURE IN HPA 1015.5 1013.5 1009.9 1009.4 1006.8 1000.2 998.0 998.6 1006.9 1011.6 1015.4 1010.0 998.0 DAY 11 25 28 3 20 17 23 14 7 13 12 21 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** 1008.9 1003.1 1000.8 1001.0 1008.6 1014.6 1020.5 1022.5 ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** 1013.3 1009.6 1003.6 1007.3 1014.1 1019.4 1025.7 1031.9 ****** DAY ** ** ** ** 17 7 26 30 21 26 29 14 MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** 1005.0 998.0 995.4 996.4 1005.0 1010.2 1014.7 1009.9 ****** DAY ** ** ** ** 20 17 23 14 7 13 12 21 PRESSURE AT HOUR 0900 UTC. MEAN QFE PRESSURE IN HPA 995.3 994.7 990.1 986.9 983.0 977.7 975.6 975.9 982.7 988.0 992.9 994.4 986.4 MAX. QFE PRESSURE IN HPA 1001.3 1003.5 997.4 991.5 987.3 983.7 978.1 981.6 987.7 992.2 997.5 1002.9 1003.5 DAY 25 1 11 6 17 7 3 29 21 26 29 14 MIN. QFE PRESSURE IN HPA 987.3 986.4 981.1 982.3 979.6 973.4 970.6 971.2 979.5 983.8 986.4 983.0 970.6 DAY 11 25 28 18 20 17 23 14 7 13 12 21 MEAN QNH PRESSURE IN HPA 1022.8 1022.2 1017.4 1014.2 1010.2 1004.8 1002.7 1002.9 1009.9 1015.3 1020.3 1021.8 1013.7 MAX. QNH PRESSURE IN HPA 1028.9 1031.2 1024.9 1018.9 1014.6 1010.9 1005.2 1008.8 1015.0 1019.6 1025.0 1030.6 1031.2 DAY 25 1 11 6 17 7 3 29 21 26 29 14 MIN. QNH PRESSURE IN HPA 1014.6 1013.7 1008.3 1009.5 1006.7 1000.4 997.5 998.1 1006.6 1011.0 1013.7 1010.2 997.5 DAY 11 25 28 18 20 17 23 14 7 13 12 21 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** 1008.6 1002.8 1000.3 1000.7 1008.0 1013.9 1019.8 1022.0 ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** 1013.2 1009.3 1003.0 1006.7 1013.3 1018.7 1024.9 1031.4 ****** DAY ** ** ** ** 17 7 3 29 21 26 29 14 MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** 1004.9 998.1 994.9 995.8 1004.6 1009.4 1012.7 1010.0 ****** DAY ** ** ** ** 20 17 23 14 7 13 12 21 PRESSURE AT HOUR 1200 UTC. MEAN QFE PRESSURE IN HPA 994.0 992.9 988.4 985.5 981.7 976.5 974.4 974.6 981.2 986.5 991.4 993.0 985.0 MAX. QFE PRESSURE IN HPA 999.9 1002.0 995.4 989.9 986.2 982.2 977.1 980.6 985.9 991.0 995.2 1001.1 1002.0 DAY 24 1 11 23 16 7 3 29 21 31 29 14 MIN. QFE PRESSURE IN HPA 985.1 985.9 980.9 981.1 978.5 972.0 969.6 970.1 978.2 982.3 985.2 983.0 969.6 DAY 21 13 26 28 20 17 22 14 6 13 12 21 MEAN QNH PRESSURE IN HPA 1021.5 1020.3 1015.7 1012.8 1008.9 1003.6 1001.5 1001.6 1008.4 1013.8 1018.8 1020.4 1012.3 MAX. QNH PRESSURE IN HPA 1027.5 1029.6 1022.9 1017.3 1013.5 1009.4 1004.2 1007.8 1013.2 1018.4 1022.7 1028.7 1029.6 DAY 24 1 11 23 16 7 3 29 21 31 29 14 MIN. QNH PRESSURE IN HPA 1012.4 1013.2 1008.1 1008.3 1005.6 999.0 996.5 997.0 1005.3 1009.5 1012.5 1010.2 996.5 DAY 21 13 26 28 20 17 22 14 6 13 12 21 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** 1007.3 1001.6 999.1 999.4 1006.5 1012.3 1018.2 1020.6 ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** 1012.0 1007.8 1002.0 1005.8 1011.4 1017.4 1022.5 1029.6 ****** DAY ** ** ** ** 16 7 3 29 21 31 29 14 MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** 1003.8 996.7 993.9 994.8 1003.3 1007.9 1011.6 1010.1 ****** DAY ** ** ** ** 20 17 22 14 7 13 12 21 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION DEHLORAN (40796) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 32 41 N LONGITUDE 47 16 E DATA PROCESSING CENTER ELEVATION 232.0 M MEANS AND EXTREMES FOR THE YEAR 2002 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 1500 UTC. MEAN QFE PRESSURE IN HPA 994.3 992.9 988.2 985.2 981.2 975.9 973.9 974.2 981.0 986.5 991.5 993.2 984.8 MAX. QFE PRESSURE IN HPA 1000.5 1001.9 995.5 989.7 985.7 981.9 976.3 980.5 985.6 990.5 995.5 1000.1 1001.9 DAY 24 1 11 23 16 6 5 29 21 26 29 14 MIN. QFE PRESSURE IN HPA 985.8 984.7 980.0 980.4 977.9 971.1 969.0 969.4 977.5 982.4 984.2 984.9 969.0 DAY 11 13 26 28 28 17 23 14 7 13 12 21 MEAN QNH PRESSURE IN HPA 1021.7 1020.3 1015.5 1012.4 1008.3 1002.9 1000.9 1001.2 1008.2 1013.8 1018.9 1020.6 1012.1 MAX. QNH PRESSURE IN HPA 1028.1 1029.5 1023.0 1017.1 1013.0 1009.1 1003.3 1007.6 1012.9 1017.9 1023.0 1027.7 1029.5 DAY 24 1 11 23 16 6 5 29 21 26 29 14 MIN. QNH PRESSURE IN HPA 1013.1 1011.9 1007.1 1007.5 1005.0 998.0 995.9 996.3 1004.6 1009.6 1011.4 1012.1 995.9 DAY 11 13 26 28 28 17 23 14 7 13 12 21 MEAN QFF PRESSURE IN HPA 1022.2 1020.4 1015.1 1011.7 1006.8 1001.0 998.7 999.2 1006.4 1012.5 1018.6 1020.9 1011.1 MAX. QFF PRESSURE IN HPA 1028.9 1030.1 1022.6 1016.6 1011.7 1007.6 1001.3 1005.8 1011.2 1017.1 1023.0 1028.6 1030.1 DAY 24 1 11 23 16 6 16 29 21 26 29 14 MIN. QFF PRESSURE IN HPA 1013.4 1011.7 1006.2 1005.9 1003.1 995.9 993.4 994.1 1002.8 1008.2 1010.7 1012.3 993.4 DAY 11 13 26 28 28 17 23 14 7 13 12 21 PRESSURE AT HOUR 1800 UTC. MEAN QFE PRESSURE IN HPA ****** ****** ****** ****** 982.1 976.9 975.2 975.3 981.8 987.3 992.1 993.8 ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** ****** 986.5 982.8 977.6 982.1 986.1 991.5 995.7 1000.8 ****** DAY ** ** ** ** 16 6 16 29 20 26 29 13 MIN. QFE PRESSURE IN HPA ****** ****** ****** ****** 978.6 972.1 969.8 971.1 978.2 982.7 984.9 986.2 ****** DAY ** ** ** ** 28 16 23 13 6 13 12 20 MEAN QNH PRESSURE IN HPA ****** ****** ****** ****** 1009.3 1004.0 1002.2 1002.4 1009.0 1014.6 1019.5 1021.3 ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** ****** 1013.8 1010.0 1004.7 1009.3 1013.4 1018.9 1023.2 1028.4 ****** DAY ** ** ** ** 16 6 16 29 20 26 29 13 MIN. QNH PRESSURE IN HPA ****** ****** ****** ****** 1005.7 999.1 996.7 998.0 1005.3 1009.9 1012.1 1013.5 ****** DAY ** ** ** ** 28 16 23 13 6 13 12 20 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** 1007.7 1001.9 999.9 1000.3 1007.2 1013.3 1019.1 1021.6 ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** 1012.5 1008.3 1002.7 1007.4 1011.8 1018.1 1023.2 1029.0 ****** DAY ** ** ** ** 16 6 16 29 20 26 29 13 MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** 1003.7 996.7 994.1 995.8 1003.5 1008.5 1011.3 1013.5 ****** DAY ** ** ** ** 28 16 23 13 6 13 12 20 PRESSURE AT HOUR 2100 UTC. MEAN QFE PRESSURE IN HPA ****** ****** ****** ****** 982.2 976.9 975.1 975.1 981.7 987.2 992.1 993.9 ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** ****** 986.8 983.1 977.7 981.2 986.2 991.0 995.6 1001.7 ****** DAY ** ** ** ** 16 6 5 29 20 26 28 13 MIN. QFE PRESSURE IN HPA ****** ****** ****** ****** 978.1 971.7 969.3 971.0 978.2 982.9 985.7 985.6 ****** DAY ** ** ** ** 28 17 23 13 9 12 12 20 MEAN QNH PRESSURE IN HPA ****** ****** ****** ****** 1009.4 1004.0 1002.1 1002.2 1008.9 1014.5 1019.5 1021.3 ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** ****** 1014.1 1010.3 1004.8 1008.4 1013.5 1018.4 1023.1 1029.3 ****** DAY ** ** ** ** 16 6 5 29 20 26 28 13 MIN. QNH PRESSURE IN HPA ****** ****** ****** ****** 1005.2 998.6 996.2 997.9 1005.3 1010.1 1013.0 1012.9 ****** DAY ** ** ** ** 28 17 23 13 9 12 12 20 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** 1007.8 1001.9 999.8 1000.0 1006.9 1013.1 1019.0 1021.5 ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** 1012.8 1008.6 1002.6 1006.3 1011.8 1017.4 1023.1 1030.0 ****** DAY ** ** ** ** 16 6 5 29 20 26 28 13 MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** 1003.1 996.3 993.7 995.7 1003.5 1008.5 1012.0 1012.8 ****** DAY ** ** ** ** 28 17 23 13 9 12 12 20 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION DEHLORAN (40796) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 32 41 N LONGITUDE 47 16 E DATA PROCESSING CENTER ELEVATION 232.0 M MEANS AND EXTREMES FOR THE YEAR 2003 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AIR TEMPERATURE (C) 13.0 14.4 18.0 25.7 32.2 37.3 38.4 39.8 34.6 29.3 19.3 13.7 26.3 MINIMUN AIR TEMPERATURE (C) 8.6 9.7 12.6 20.1 25.7 30.1 31.3 31.8 27.1 23.3 14.5 9.8 20.4 DAYS WITH MINIMUM TEMP. >=21 0 0 0 10 27 30 31 31 30 28 1 0 188 DAYS WITH MINIMUM TEMP. <=-4 0 0 0 0 0 0 0 0 0 0 0 0 0 DAYS WITH FREEZING MIN.<= 0 0 0 0 0 0 0 0 0 0 0 0 0 0 TEMPERATURE RECORDS LOWEST(C) 4.4 5.0 4.6 12.6 18.2 26.8 28.4 29.0 22.2 12.4 9.0 5.0 4.4 DAY 17 26 1 2 1 3 28 1 30 31 17 21 MAXIMUM AIR TEMPERATURE (C) 18.7 20.1 23.9 31.8 38.4 43.5 45.5 47.0 41.7 35.8 24.8 18.3 32.5 DAYS WITH MAXIMUM TEMP. >=30 0 0 1 21 31 30 31 31 30 28 5 0 208 DAYS WITH MAXIMUM TEMP. <= 0 0 0 0 0 0 0 0 0 0 0 0 0 0 TEMPERATURE RECORDS HIGHEST(C) 24.6 26.0 30.2 36.8 42.0 45.8 48.2 51.8 46.8 39.4 32.6 21.2 51.8 DAY 9 24 25 5 17 11 10 8 3 1 7 11 DIF. BETWEEN (MAX.-MIN.) (C) 10.1 10.4 11.3 11.7 12.7 13.4 14.2 15.2 14.6 12.5 10.3 8.5 12.1 MEAN DAILY TEMP. (MDT) (C) 13.6 14.9 18.2 25.9 32.0 36.8 38.4 39.4 34.4 29.5 19.7 14.0 26.4 COOLING DEG. DAYS(BASE 21 0C) 0.0 0.0 9.5 148.8 342.1 473.7 539.4 570.3 401.9 266.5 29.5 0.0 2781.7 HEATING DEG. DAYS(BASE 18 0C) 135.3 87.0 38.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 21.4 123.1 404.8 DEWPOINT (MEAN C) 5.6 4.2 4.2 6.5 6.1 9.6 10.8 6.9 4.0 6.6 6.1 7.4 6.5 MIXING RATIO (G/KG) 5.85 5.39 5.41 6.42 6.16 8.16 8.68 6.77 5.33 6.63 6.40 6.77 6.50 VAPOUR PRESSURE (HPA) 9.26 8.51 8.52 10.06 9.64 12.62 13.38 10.49 8.33 10.39 10.08 10.70 10.16 SATURATION DEF. (HPA) 6.13 8.33 12.86 24.13 39.85 53.09 56.20 64.75 48.59 31.79 13.30 5.33 30.36 RELATIVE HUMIDITY (MEAN %) 63 53 43 32 21 20 20 15 16 26 46 69 35 RELATIVE HUMIDITY (MAX. %) 78 72 60 49 30 27 27 23 23 36 60 84 47 RELATIVE HUMIDITY (MIN. %) 46 35 29 20 13 13 14 9 10 17 31 50 24 RELATIVE HUMIDITY (MEAN% 03UTC) 75 65 52 42 28 25 26 21 21 33 54 77 43 RELATIVE HUMIDITY (MEAN% 09UTC) 54 46 35 25 16 17 16 12 12 22 36 62 29 RELATIVE HUMIDITY (MEAN% 15UTC) 57 45 34 25 16 17 17 11 12 24 44 64 31 RH=0 => RELATIVE HUMIDITY < 0.5% AMOUNT OF PRECIPITATION MM. 22.4 34.0 36.7 42.7 1.1 0.0 0.0 0.0 0.0 0.2 29.6 81.9 248.6 DAYS WITH PRECIPITATION >=10 1 1 1 2 0 0 0 0 0 0 1 3 9 DAYS WITH PRECIPITATION >= 5 2 2 2 2 0 0 0 0 0 0 2 5 15 DAYS WITH PRECIPITATION >= 1 5 3 2 7 1 0 0 0 0 0 5 6 29 DAYS WITH PRECIPITATION 6 5 7 10 2 0 0 0 0 1 5 8 44 GREATEST DAILY PRECIPITATION 10.0 24.0 26.6 17.0 1.0 0.0 0.0 0.0 0.0 0.2 12.5 36.0 36.0 DAY 4 5 26 22 19 ** ** ** ** 18 10 6 DAY WITH THUNDER STORM 1 1 2 7 1 0 0 0 0 1 1 3 17 DAYS WITH SNOW OR SLEET 0 0 0 0 0 0 0 0 0 0 0 0 0 DAYS WITH DUST 1 0 3 1 4 4 8 1 3 4 2 1 32 WIND DIRECTION (PREVAILING) 90 270 90 90 315 270 270 270 270 90 270 90 270 PREVAILING WIND SPEED(KNOTS) 12.1 8.6 14.9 14.6 7.5 11.0 12.4 11.3 10.7 10.1 8.7 12.0 10.2 PREVAILING WIND PERCENT 23.8 21.4 23.0 25.0 21.4 28.8 33.1 16.5 26.3 16.9 14.2 18.5 18.5 CALMS PERCENT OF WIND 35.1 23.7 24.2 20.0 27.0 22.5 15.7 26.6 25.0 39.5 44.2 46.8 29.2 NO. OF WIND OBSERVATION 248 224 248 240 248 240 248 248 240 248 240 248 2920 VECTOR WIND DIRECTION (MEAN) 105 94 114 102 292 288 280 276 286 124 100 93 286 VECTOR WIND MAGNITUDE(KNOTS) 2.7 1.2 2.4 2.6 3.4 4.4 5.7 2.0 4.0 0.8 0.7 1.8 0.6 WIND STEADINESES (MEAN %) 48.2 16.7 30.8 31.3 60.7 62.0 70.4 32.8 64.5 16.3 15.2 40.0 9.5 WIND SPEED (MEAN KNOTS) 5.6 7.2 7.8 8.3 5.6 7.1 8.1 6.1 6.2 4.9 4.6 4.5 6.3 FASTEST WIND DIRECTION 90 80 90 120 270 280 270 280 260 90 70 30 90 FASTEST WIND SPEED (KNOTS) 33 29 49 29 29 27 29 27 29 19 27 27 49 DAY 28 3 25 7 29 22 17 16 6 3 10 11 DAYS WITH SKY CLEAR (0-2)/8 16 13 13 9 21 27 31 31 30 22 17 17 247 DAYS WITH P.CLOUDY (3-6)/8 9 12 14 14 6 1 0 0 0 5 5 5 71 DAYS WITH CLOUDY (7-8)/8 6 3 4 7 4 2 0 0 0 4 8 9 47 DAYS WITH VISIBILITY =< 2 KM 2 1 2 0 0 1 0 0 0 0 0 5 11 DURATION OF SUNSHINE HOURS 204.7 177.9 165.1 208.2 261.6 311.5 369.0 365.2 325.3 245.1 197.3 170.0 3000.9 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION DEHLORAN (40796) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 32 41 N LONGITUDE 47 16 E DATA PROCESSING CENTER ELEVATION 232.0 M MEANS AND EXTREMES FOR THE YEAR 2003 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL MEAN QFE PRESSURE IN HPA 994.1 990.5 989.2 986.2 983.5 976.3 972.9 975.4 981.0 987.2 992.2 994.6 985.3 MAX. QFE PRESSURE IN HPA 1001.5 999.3 999.6 993.3 989.7 985.4 979.2 980.1 986.5 993.4 999.9 1001.7 1001.7 DAY-HOUR 7- 6 6- 6 2- 6 29- 6 10- 9 2- 9 3- 6 29- 6 20- 6 31- 6 25- 6 30- 6 MIN. QFE PRESSURE IN HPA 979.2 980.5 976.1 977.0 976.0 968.8 968.8 972.0 975.0 980.8 984.5 983.1 968.8 DAY-HOUR 28-12 19- 3 12-15 20-15 29- 0 30-15 7-15 21- 0 4-15 1-15 9- 0 6- 0 MEAN QNH PRESSURE IN HPA 1021.5 1017.9 1016.6 1013.5 1010.7 1003.4 999.9 1002.4 1008.1 1014.5 1019.6 1022.1 1012.5 MAX. QNH PRESSURE IN HPA 1029.1 1026.9 1027.2 1020.7 1017.1 1012.7 1006.3 1007.2 1013.8 1020.8 1027.5 1029.3 1029.3 DAY-HOUR 7- 6 6- 6 2- 6 29- 6 10- 9 2- 9 3- 6 29- 6 20- 6 31- 6 25- 6 30- 6 MIN. QNH PRESSURE IN HPA 1006.3 1007.6 1003.1 1004.1 1003.0 995.7 995.7 999.0 1002.0 1008.0 1011.7 1010.3 995.7 DAY-HOUR 28-12 19- 3 12-15 20-15 29- 0 30-15 7-15 21- 0 4-15 1-15 9- 0 6- 0 MEAN QFF PRESSURE IN HPA 1021.8 1018.0 1016.3 1012.5 1009.2 1001.4 997.7 1000.2 1006.4 1013.2 1019.3 1022.2 1011.5 MAX. QFF PRESSURE IN HPA 1029.4 1027.3 1027.6 1020.1 1015.9 1011.0 1004.1 1005.4 1012.4 1020.7 1027.4 1029.8 1029.8 DAY-HOUR 6- 6 6- 6 2- 6 29- 9 1- 6 2- 9 3- 6 29- 6 20- 6 31- 6 25- 6 30- 6 MIN. QFF PRESSURE IN HPA 1006.2 1007.6 1002.5 1002.9 1001.3 993.7 993.3 996.7 1000.0 1006.5 1010.6 1010.1 993.3 DAY-HOUR 28-12 20-12 12-15 27-15 29- 0 30-15 7-15 21- 0 4-15 1-15 9- 0 6- 0 PRESSURE AT HOUR 0000 UTC. MEAN QFE PRESSURE IN HPA 993.9 990.3 989.0 985.7 983.1 976.2 972.4 974.8 980.5 986.8 991.8 994.4 984.9 MAX. QFE PRESSURE IN HPA 1000.5 997.6 997.7 991.2 988.6 983.9 978.0 978.5 984.9 992.1 997.1 1000.3 1000.5 DAY 7 6 2 30 1 2 3 29 20 31 26 22 MIN. QFE PRESSURE IN HPA 984.0 982.2 979.0 979.2 976.0 969.9 969.7 972.0 975.7 982.1 984.5 983.1 969.7 DAY 28 19 26 27 29 30 1 21 1 2 9 6 MEAN QNH PRESSURE IN HPA 1021.3 1017.7 1016.3 1013.0 1010.3 1003.3 999.3 1001.8 1007.6 1014.1 1019.2 1021.8 1012.1 MAX. QNH PRESSURE IN HPA 1028.1 1025.1 1025.2 1018.6 1015.9 1011.1 1005.1 1005.6 1012.1 1019.5 1024.6 1027.9 1028.1 DAY 7 6 2 30 1 2 3 29 20 31 26 22 MIN. QNH PRESSURE IN HPA 1011.2 1009.4 1006.1 1006.3 1003.0 996.8 996.6 999.0 1002.7 1009.3 1011.7 1010.3 996.6 DAY 28 19 26 27 29 30 1 21 1 2 9 6 MEAN QFF PRESSURE IN HPA 1021.5 1017.7 1016.1 1012.0 1008.8 1001.2 997.1 999.6 1005.8 1012.7 1018.8 1021.9 1011.1 MAX. QFF PRESSURE IN HPA 1028.2 1025.4 1025.6 1017.8 1015.1 1009.5 1002.9 1003.6 1010.7 1019.0 1024.0 1028.4 1028.4 DAY 7 6 2 30 1 4 3 29 20 31 26 22 MIN. QFF PRESSURE IN HPA 1011.1 1009.4 1005.6 1005.2 1001.3 994.6 994.5 996.7 1000.6 1007.5 1010.6 1010.1 994.5 DAY 28 19 26 27 29 30 1 21 5 2 9 6 PRESSURE AT HOUR 0300 UTC. MEAN QFE PRESSURE IN HPA 993.9 990.3 989.3 986.1 983.6 976.7 972.9 975.6 981.0 987.2 992.1 994.4 985.3 MAX. QFE PRESSURE IN HPA 1000.5 997.8 997.9 991.7 988.5 984.9 978.4 979.1 985.3 992.1 997.6 1000.5 1000.5 DAY 7 6 2 29 1 4 3 29 20 31 25 30 MIN. QFE PRESSURE IN HPA 982.7 980.5 979.3 980.7 976.9 970.1 970.3 972.5 975.8 983.1 985.4 984.0 970.1 DAY 28 19 26 20 29 30 7 21 5 2 9 6 MEAN QNH PRESSURE IN HPA 1021.3 1017.7 1016.6 1013.4 1010.8 1003.7 999.9 1002.7 1008.1 1014.5 1019.5 1021.8 1012.5 MAX. QNH PRESSURE IN HPA 1028.1 1025.3 1025.4 1019.1 1015.8 1012.1 1005.5 1006.2 1012.6 1019.5 1025.1 1028.1 1028.1 DAY 7 6 2 29 1 4 3 29 20 31 25 30 MIN. QNH PRESSURE IN HPA 1009.9 1007.6 1006.4 1007.8 1004.0 997.0 997.2 999.5 1002.8 1010.3 1012.7 1011.2 997.0 DAY 28 19 26 20 29 30 7 21 5 2 9 6 MEAN QFF PRESSURE IN HPA 1021.6 1017.8 1016.5 1012.4 1009.3 1001.8 997.8 1000.5 1006.5 1013.3 1019.2 1022.0 1011.6 MAX. QFF PRESSURE IN HPA 1028.4 1025.8 1026.0 1018.5 1014.8 1010.6 1003.4 1004.4 1011.3 1019.2 1025.0 1028.6 1028.6 DAY 7 6 2 29 1 4 3 29 20 31 25 30 MIN. QFF PRESSURE IN HPA 1009.9 1007.7 1006.0 1006.7 1002.4 995.0 994.9 997.4 1000.9 1008.7 1011.7 1011.1 994.9 DAY 28 19 26 20 29 30 7 21 5 2 9 6 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION DEHLORAN (40796) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 32 41 N LONGITUDE 47 16 E DATA PROCESSING CENTER ELEVATION 232.0 M MEANS AND EXTREMES FOR THE YEAR 2003 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 0600 UTC. MEAN QFE PRESSURE IN HPA 995.1 991.6 990.5 987.5 984.7 977.3 973.7 976.7 982.1 988.6 993.5 995.8 986.4 MAX. QFE PRESSURE IN HPA 1001.5 999.3 999.6 993.3 989.5 984.9 979.2 980.1 986.5 993.4 999.9 1001.7 1001.7 DAY 7 6 2 29 1 4 3 29 20 31 25 30 MIN. QFE PRESSURE IN HPA 981.9 981.1 981.7 981.2 978.7 970.4 970.6 973.8 977.2 984.2 987.2 985.3 970.4 DAY 28 20 12 27 29 30 7 21 4 1 9 6 MEAN QNH PRESSURE IN HPA 1022.5 1019.0 1017.9 1014.8 1011.9 1004.4 1000.7 1003.8 1009.3 1015.9 1020.9 1023.3 1013.7 MAX. QNH PRESSURE IN HPA 1029.1 1026.9 1027.2 1020.7 1016.8 1012.1 1006.3 1007.2 1013.8 1020.8 1027.5 1029.3 1029.3 DAY 7 6 2 29 1 4 3 29 20 31 25 30 MIN. QNH PRESSURE IN HPA 1009.1 1008.3 1008.9 1008.4 1005.8 997.3 997.5 1000.8 1004.3 1011.4 1014.5 1012.6 997.3 DAY 28 20 12 27 29 30 7 21 4 1 9 6 MEAN QFF PRESSURE IN HPA 1022.9 1019.2 1017.7 1013.8 1010.4 1002.4 998.6 1001.6 1007.6 1014.7 1020.6 1023.5 1012.8 MAX. QFF PRESSURE IN HPA 1029.4 1027.3 1027.6 1020.1 1015.9 1010.5 1004.1 1005.4 1012.4 1020.7 1027.4 1029.8 1029.8 DAY 6 6 2 29 1 4 3 29 20 31 25 30 MIN. QFF PRESSURE IN HPA 1009.1 1008.0 1008.2 1007.1 1004.1 995.2 995.3 998.7 1002.3 1010.0 1013.6 1012.4 995.2 DAY 28 20 12 27 29 30 7 21 4 1 9 6 PRESSURE AT HOUR 0900 UTC. MEAN QFE PRESSURE IN HPA 994.6 991.4 990.1 987.2 984.6 977.1 973.7 976.4 981.8 988.0 992.9 995.1 986.1 MAX. QFE PRESSURE IN HPA 1000.9 999.2 999.0 993.3 989.7 985.4 978.8 979.8 986.1 992.8 999.5 1000.4 1000.9 DAY 6 6 2 29 10 2 3 29 27 31 25 30 MIN. QFE PRESSURE IN HPA 980.2 981.1 978.6 979.4 979.4 970.1 970.7 973.7 976.8 983.5 986.4 985.4 970.1 DAY 28 20 12 20 28 30 7 21 4 1 9 6 MEAN QNH PRESSURE IN HPA 1022.1 1018.8 1017.5 1014.5 1011.8 1004.2 1000.7 1003.4 1009.0 1015.3 1020.4 1022.5 1013.3 MAX. QNH PRESSURE IN HPA 1028.5 1026.8 1026.6 1020.7 1017.1 1012.7 1005.9 1006.9 1013.4 1020.2 1027.1 1028.0 1028.5 DAY 6 6 2 29 10 2 3 29 27 31 25 30 MIN. QNH PRESSURE IN HPA 1007.3 1008.3 1005.7 1006.5 1006.5 997.0 997.6 1000.7 1003.9 1010.7 1013.7 1012.7 997.0 DAY 28 20 12 20 28 30 7 21 4 1 9 6 MEAN QFF PRESSURE IN HPA 1022.3 1018.8 1017.2 1013.4 1010.2 1002.1 998.5 1001.2 1007.2 1013.9 1019.9 1022.6 1012.3 MAX. QFF PRESSURE IN HPA 1028.5 1026.9 1026.9 1020.1 1015.9 1011.0 1003.6 1005.0 1011.6 1019.8 1026.6 1028.4 1028.5 DAY 6 6 2 29 1 2 3 29 20 31 25 30 MIN. QFF PRESSURE IN HPA 1007.2 1008.0 1005.0 1005.1 1004.9 994.8 995.2 998.5 1001.6 1009.0 1012.9 1012.6 994.8 DAY 28 20 12 20 28 30 7 21 4 1 9 6 PRESSURE AT HOUR 1200 UTC. MEAN QFE PRESSURE IN HPA 993.3 989.6 988.5 985.7 983.2 975.8 972.6 974.9 980.4 986.5 991.6 993.8 984.7 MAX. QFE PRESSURE IN HPA 999.8 997.1 997.2 991.6 988.3 984.5 977.9 978.5 984.3 992.0 998.2 999.1 999.8 DAY 6 6 2 29 10 2 3 29 19 31 25 30 MIN. QFE PRESSURE IN HPA 979.2 980.7 976.3 977.8 977.5 969.3 969.5 972.8 975.3 981.8 985.6 985.6 969.3 DAY 28 20 12 20 28 30 7 20 4 1 8 6 MEAN QNH PRESSURE IN HPA 1020.7 1017.0 1015.9 1012.9 1010.4 1002.9 999.6 1001.9 1007.5 1013.7 1019.0 1021.2 1011.9 MAX. QNH PRESSURE IN HPA 1027.4 1024.6 1024.7 1019.0 1015.6 1011.7 1005.0 1005.6 1011.5 1019.4 1025.7 1026.7 1027.4 DAY 6 6 2 29 10 2 3 29 19 31 25 30 MIN. QNH PRESSURE IN HPA 1006.3 1007.8 1003.3 1004.9 1004.6 996.2 996.4 999.8 1002.3 1009.0 1012.9 1012.9 996.2 DAY 28 20 12 20 28 30 7 20 4 1 8 6 MEAN QFF PRESSURE IN HPA 1020.9 1017.0 1015.6 1011.9 1008.8 1000.8 997.4 999.6 1005.7 1012.4 1018.6 1021.3 1010.8 MAX. QFF PRESSURE IN HPA 1027.3 1024.8 1025.1 1018.3 1014.4 1010.2 1002.7 1003.6 1010.0 1019.0 1025.3 1027.0 1027.3 DAY 6 6 2 29 10 2 3 29 19 31 25 30 MIN. QFF PRESSURE IN HPA 1006.2 1007.6 1002.6 1003.4 1002.9 994.0 993.9 997.6 1000.2 1007.4 1011.8 1012.9 993.9 DAY 28 20 12 20 28 30 7 20 4 1 8 6 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION DEHLORAN (40796) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 32 41 N LONGITUDE 47 16 E DATA PROCESSING CENTER ELEVATION 232.0 M MEANS AND EXTREMES FOR THE YEAR 2003 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 1500 UTC. MEAN QFE PRESSURE IN HPA 993.5 989.7 988.1 985.0 982.4 975.2 972.1 974.3 980.1 986.4 991.8 994.1 984.4 MAX. QFE PRESSURE IN HPA 1000.1 996.9 996.8 990.5 988.6 984.4 976.6 978.2 984.2 991.9 998.3 999.8 1000.1 DAY 6 6 2 29 10 2 2 29 19 31 25 29 MIN. QFE PRESSURE IN HPA 980.8 980.8 976.1 977.0 976.3 968.8 968.8 972.0 975.0 980.8 985.1 986.8 968.8 DAY 28 19 12 20 28 30 7 21 4 1 8 5 MEAN QNH PRESSURE IN HPA 1020.9 1017.1 1015.5 1012.3 1009.6 1002.3 999.0 1001.3 1007.3 1013.7 1019.2 1021.6 1011.6 MAX. QNH PRESSURE IN HPA 1027.7 1024.4 1024.3 1017.9 1015.9 1011.6 1003.7 1005.3 1011.4 1019.3 1025.8 1027.4 1027.7 DAY 6 6 2 29 10 2 2 29 19 31 25 29 MIN. QNH PRESSURE IN HPA 1008.0 1008.0 1003.1 1004.1 1003.3 995.7 995.7 999.0 1002.0 1008.0 1012.4 1014.1 995.7 DAY 28 19 12 20 28 30 7 21 4 1 8 5 MEAN QFF PRESSURE IN HPA 1021.3 1017.2 1015.3 1011.4 1008.1 1000.3 996.9 999.2 1005.6 1012.5 1018.9 1021.8 1010.7 MAX. QFF PRESSURE IN HPA 1027.9 1024.8 1024.7 1017.3 1014.8 1010.1 1001.5 1003.4 1010.0 1019.0 1025.6 1027.9 1027.9 DAY 6 6 2 29 10 2 2 29 19 31 25 30 MIN. QFF PRESSURE IN HPA 1008.0 1007.8 1002.5 1002.9 1001.7 993.7 993.3 996.9 1000.0 1006.5 1011.4 1014.0 993.3 DAY 28 19 12 27 28 30 7 21 4 1 9 5 PRESSURE AT HOUR 1800 UTC. MEAN QFE PRESSURE IN HPA 994.3 990.6 989.1 986.1 983.3 976.2 973.0 975.3 981.1 987.3 992.2 994.8 985.3 MAX. QFE PRESSURE IN HPA 1000.8 997.0 997.3 991.8 988.8 985.0 977.6 979.0 985.8 992.4 998.5 1000.3 1000.8 DAY 6 5 2 29 10 3 2 29 19 31 25 29 MIN. QFE PRESSURE IN HPA 984.0 982.6 977.9 978.3 976.4 969.9 970.5 973.3 975.8 981.5 985.3 985.3 969.9 DAY 28 19 12 20 28 30 25 20 4 1 8 5 MEAN QNH PRESSURE IN HPA 1021.8 1018.0 1016.4 1013.4 1010.5 1003.3 1000.0 1002.3 1008.3 1014.6 1019.6 1022.2 1012.5 MAX. QNH PRESSURE IN HPA 1028.4 1024.5 1024.8 1019.2 1016.1 1012.2 1004.7 1006.1 1013.1 1019.8 1026.1 1027.9 1028.4 DAY 6 5 2 29 10 3 2 29 19 31 25 29 MIN. QNH PRESSURE IN HPA 1011.2 1009.8 1005.0 1005.4 1003.5 996.8 997.4 1000.3 1002.8 1008.7 1012.6 1012.6 996.8 DAY 28 19 12 20 28 30 25 20 4 1 8 5 MEAN QFF PRESSURE IN HPA 1022.1 1018.1 1016.2 1012.5 1009.0 1001.2 997.9 1000.1 1006.6 1013.4 1019.3 1022.5 1011.6 MAX. QFF PRESSURE IN HPA 1028.8 1024.8 1025.1 1018.6 1014.9 1010.5 1002.6 1004.2 1011.6 1019.7 1025.8 1028.4 1028.8 DAY 6 5 1 29 10 3 2 29 19 31 25 29 MIN. QFF PRESSURE IN HPA 1011.4 1009.6 1004.4 1004.2 1001.8 994.7 995.4 998.1 1000.9 1007.0 1011.7 1012.4 994.7 DAY 28 19 12 20 28 30 25 20 4 1 8 5 PRESSURE AT HOUR 2100 UTC. MEAN QFE PRESSURE IN HPA 994.1 990.8 989.4 986.4 983.5 976.3 973.0 975.2 981.0 987.3 992.1 994.6 985.3 MAX. QFE PRESSURE IN HPA 1000.8 997.6 997.4 991.9 988.7 984.9 978.0 978.8 985.4 992.3 996.7 1000.2 1000.8 DAY 6 5 1 29 10 3 2 29 19 31 25 21 MIN. QFE PRESSURE IN HPA 985.5 983.0 981.2 980.9 976.6 970.5 970.8 973.1 976.0 981.8 985.2 984.4 970.5 DAY 28 18 12 20 28 30 25 20 4 1 8 5 MEAN QNH PRESSURE IN HPA 1021.6 1018.2 1016.7 1013.7 1010.7 1003.4 999.9 1002.2 1008.2 1014.6 1019.5 1022.1 1012.6 MAX. QNH PRESSURE IN HPA 1028.4 1025.1 1024.9 1019.3 1016.0 1012.1 1005.1 1005.9 1012.7 1019.7 1024.2 1027.8 1028.4 DAY 6 5 1 29 10 3 2 29 19 31 25 21 MIN. QNH PRESSURE IN HPA 1012.8 1010.2 1008.4 1008.1 1003.7 997.4 997.7 1000.1 1003.0 1009.0 1012.5 1011.6 997.4 DAY 28 18 12 20 28 30 25 20 4 1 8 5 MEAN QFF PRESSURE IN HPA 1021.7 1018.2 1016.4 1012.6 1009.1 1001.3 997.8 999.9 1006.3 1013.2 1019.1 1022.2 1011.5 MAX. QFF PRESSURE IN HPA 1028.4 1025.3 1025.4 1018.7 1014.6 1010.5 1002.9 1003.9 1011.0 1019.2 1023.9 1028.3 1028.4 DAY 6 5 1 29 10 2 2 29 19 31 21 21 MIN. QFF PRESSURE IN HPA 1012.9 1010.2 1007.8 1006.9 1002.0 995.3 995.4 997.8 1000.9 1007.2 1011.5 1011.5 995.3 DAY 28 19 12 20 28 30 6 20 3 1 8 5 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION DEHLORAN (40796) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 32 41 N LONGITUDE 47 16 E DATA PROCESSING CENTER ELEVATION 232.0 M MEANS AND EXTREMES FOR THE YEAR 2004 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AIR TEMPERATURE (C) 13.8 14.4 21.7 23.6 31.0 37.5 39.6 38.1 35.1 30.1 19.8 11.4 26.3 MINIMUN AIR TEMPERATURE (C) 10.4 9.6 15.6 18.0 24.7 30.2 32.2 30.7 27.9 23.8 15.5 7.5 20.5 DAYS WITH MINIMUM TEMP. >=21 0 0 3 5 28 30 31 31 30 24 5 0 187 DAYS WITH MINIMUM TEMP. <=-4 0 0 0 0 0 0 0 0 0 0 0 0 0 DAYS WITH FREEZING MIN.<= 0 0 0 0 0 0 0 0 0 0 0 0 1 1 TEMPERATURE RECORDS LOWEST(C) 6.4 1.4 7.8 9.8 20.0 24.2 28.8 26.6 23.0 16.4 5.0 -0.4 -0.4 DAY 30 24 17 6 14 3 1 20 13 23 29 18 MAXIMUM AIR TEMPERATURE (C) 17.9 19.5 28.0 29.1 36.8 43.8 46.4 45.4 42.4 36.6 24.9 16.2 32.3 DAYS WITH MAXIMUM TEMP. >=30 0 0 13 12 31 30 31 31 30 31 6 0 215 DAYS WITH MAXIMUM TEMP. <= 0 0 0 0 0 0 0 0 0 0 0 0 0 0 TEMPERATURE RECORDS HIGHEST(C) 20.4 26.6 33.4 37.6 41.8 47.8 48.6 47.8 47.6 41.2 31.8 21.8 48.6 DAY 25 29 28 29 26 20 17 7 8 6 1 4 DIF. BETWEEN (MAX.-MIN.) (C) 7.5 9.9 12.4 11.1 12.1 13.6 14.2 14.7 14.5 12.8 9.4 8.7 11.8 MEAN DAILY TEMP. (MDT) (C) 14.1 14.5 21.8 23.5 30.7 37.0 39.3 38.1 35.2 30.2 20.2 11.8 26.4 COOLING DEG. DAYS(BASE 21 0C) 0.0 1.1 64.1 88.4 301.0 480.7 567.2 529.0 425.2 285.7 50.3 0.0 2792.7 HEATING DEG. DAYS(BASE 18 0C) 119.8 108.6 14.2 2.3 0.0 0.0 0.0 0.0 0.0 0.0 43.1 191.1 479.1 DEWPOINT (MEAN C) 8.0 3.6 3.4 5.7 6.5 9.3 10.1 9.6 7.1 6.5 7.5 4.0 6.8 MIXING RATIO (G/KG) 6.98 5.23 5.19 6.25 6.39 7.94 8.27 7.86 6.89 6.40 6.87 5.42 6.64 VAPOUR PRESSURE (HPA) 10.98 8.27 8.18 9.79 9.97 12.29 12.76 12.16 10.73 10.06 10.81 8.57 10.38 SATURATION DEF. (HPA) 5.01 8.83 19.02 20.56 36.40 53.86 61.44 56.51 48.14 34.20 13.74 5.20 30.24 RELATIVE HUMIDITY (MEAN %) 70 51 32 35 24 20 18 19 19 24 47 65 35 RELATIVE HUMIDITY (MAX. %) 86 68 46 55 33 28 25 28 27 32 65 80 48 RELATIVE HUMIDITY (MIN. %) 51 34 20 21 16 14 12 12 13 17 32 48 24 RELATIVE HUMIDITY (MEAN% 03UTC) 79 62 43 46 31 25 23 26 24 29 57 71 43 RELATIVE HUMIDITY (MEAN% 09UTC) 60 43 25 27 18 15 15 15 15 20 38 57 29 RELATIVE HUMIDITY (MEAN% 15UTC) 66 43 26 27 19 16 14 14 17 21 43 60 31 RH=0 => RELATIVE HUMIDITY < 0.5% AMOUNT OF PRECIPITATION MM. 116.5 12.1 0.2 39.2 13.0 0.0 0.0 0.0 0.0 0.0 25.1 51.4 257.5 DAYS WITH PRECIPITATION >=10 3 0 0 1 0 0 0 0 0 0 1 2 7 DAYS WITH PRECIPITATION >= 5 4 1 0 4 1 0 0 0 0 0 3 5 18 DAYS WITH PRECIPITATION >= 1 9 3 0 7 3 0 0 0 0 0 4 7 33 DAYS WITH PRECIPITATION 13 4 1 7 3 0 0 0 0 0 6 8 42 GREATEST DAILY PRECIPITATION 46.0 5.0 0.2 15.0 6.0 0.0 0.0 0.0 0.0 0.0 11.0 15.3 46.0 DAY 7 2 19 24 3 ** ** ** ** ** 2 25 DAY WITH THUNDER STORM 3 2 0 3 2 0 0 0 0 0 3 3 16 DAYS WITH SNOW OR SLEET 0 0 0 0 0 0 0 0 0 0 0 0 0 DAYS WITH DUST 0 5 4 3 6 4 4 7 3 1 3 0 40 WIND DIRECTION (PREVAILING) 90 270 270 90 270 270 270 270 270 270 270 270 270 PREVAILING WIND SPEED(KNOTS) 11.8 10.1 7.7 13.5 10.5 11.6 11.0 13.1 10.7 9.4 7.6 6.9 10.2 PREVAILING WIND PERCENT 24.2 15.1 14.5 20.0 27.0 39.6 19.4 30.2 22.1 14.9 17.1 13.3 19.7 CALMS PERCENT OF WIND 37.5 39.2 40.7 24.6 25.8 19.2 31.5 27.4 30.8 45.6 33.8 43.1 33.3 NO. OF WIND OBSERVATION 248 232 248 240 248 240 248 248 240 248 240 248 2928 VECTOR WIND DIRECTION (MEAN) 102 129 193 113 283 285 256 279 289 275 75 53 277 VECTOR WIND MAGNITUDE(KNOTS) 2.6 0.7 0.7 1.5 3.2 6.4 2.1 4.7 2.2 1.2 0.3 0.8 1.2 WIND STEADINESES (MEAN %) 49.1 13.0 15.9 21.1 49.2 82.1 36.8 69.1 41.5 30.0 6.0 19.0 21.4 WIND SPEED (MEAN KNOTS) 5.3 5.4 4.4 7.1 6.5 7.8 5.7 6.8 5.3 4.0 5.0 4.2 5.6 FASTEST WIND DIRECTION 120 90 120 90 140 270 250 280 280 290 270 90 280 FASTEST WIND SPEED (KNOTS) 29 27 25 29 29 29 23 27 31 23 27 29 31 DAY 24 13 19 3 3 12 2 1 12 15 2 12 DAYS WITH SKY CLEAR (0-2)/8 12 15 15 14 22 30 26 31 29 26 14 16 250 DAYS WITH P.CLOUDY (3-6)/8 12 11 15 9 7 0 5 0 1 5 9 8 82 DAYS WITH CLOUDY (7-8)/8 7 3 1 7 2 0 0 0 0 0 7 7 34 DAYS WITH VISIBILITY =< 2 KM 5 3 0 0 2 0 0 0 1 1 2 5 19 DURATION OF SUNSHINE HOURS 178.1 216.6 251.0 230.1 296.9 372.8 349.4 366.4 313.6 262.5 174.5 181.6 3193.5 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION DEHLORAN (40796) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 32 41 N LONGITUDE 47 16 E DATA PROCESSING CENTER ELEVATION 232.0 M MEANS AND EXTREMES FOR THE YEAR 2004 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL MEAN QFE PRESSURE IN HPA 990.9 993.3 989.8 986.0 981.7 976.7 974.0 975.1 981.5 988.4 991.9 994.0 985.3 MAX. QFE PRESSURE IN HPA 996.6 1002.3 995.1 993.8 990.3 984.7 977.2 980.5 987.7 994.6 1002.3 1003.0 1003.0 DAY-HOUR 16- 6 8- 9 23- 6 6- 6 18- 6 3- 6 25- 6 29- 6 30- 6 15-21 28- 6 18- 6 MIN. QFE PRESSURE IN HPA 984.3 984.9 977.8 978.4 973.7 969.3 968.5 969.8 974.7 983.2 983.1 984.1 968.5 DAY-HOUR 13- 6 15- 3 31-15 16-15 13- 0 19-15 11-15 3- 0 1-15 8-12 23- 0 25-12 MEAN QNH PRESSURE IN HPA 1018.3 1020.8 1017.2 1013.3 1008.8 1003.7 1001.0 1002.1 1008.7 1015.8 1019.3 1021.5 1012.5 MAX. QNH PRESSURE IN HPA 1024.1 1029.9 1022.6 1021.2 1017.7 1011.9 1004.3 1007.6 1015.0 1022.1 1029.9 1030.7 1030.7 DAY-HOUR 16- 6 8- 9 23- 6 6- 6 18- 6 3- 6 25- 6 29- 6 30- 6 15-21 28- 6 18- 6 MIN. QNH PRESSURE IN HPA 1011.5 1012.1 1004.9 1005.5 1000.7 996.2 995.4 996.7 1001.7 1010.4 1010.3 1011.3 995.4 DAY-HOUR 13- 6 15- 3 31-15 16-15 13- 0 19-15 11-15 3- 0 1-15 8-12 23- 0 25-12 MEAN QFF PRESSURE IN HPA 1018.4 1020.9 1016.6 1012.5 1007.4 1001.7 998.8 1000.0 1006.8 1014.4 1018.9 1021.9 1011.5 MAX. QFF PRESSURE IN HPA 1024.4 1030.4 1022.0 1021.2 1016.5 1010.4 1002.1 1005.6 1013.5 1021.4 1030.6 1032.1 1032.1 DAY-HOUR 16- 6 8- 9 17- 6 6- 6 18- 6 3- 6 25- 6 29- 6 30- 6 24- 6 28- 6 18- 6 MIN. QFF PRESSURE IN HPA 1011.4 1011.6 1003.8 1004.5 999.3 994.1 993.2 994.4 999.8 1008.7 1009.6 1011.5 993.2 DAY-HOUR 13- 6 14-15 31-15 16-15 13- 0 19-15 11-15 3- 0 1-15 8-12 23- 0 25-12 PRESSURE AT HOUR 0000 UTC. MEAN QFE PRESSURE IN HPA 990.6 993.1 989.5 985.5 981.2 976.3 973.4 974.5 980.8 987.9 991.6 993.7 984.8 MAX. QFE PRESSURE IN HPA 995.5 999.8 993.4 991.5 987.6 982.6 975.7 979.0 985.0 992.3 1000.3 1000.7 1000.7 DAY 1 9 17 6 18 3 27 29 27 24 29 18 MIN. QFE PRESSURE IN HPA 984.6 985.3 982.3 978.6 973.7 970.1 968.8 969.8 975.6 983.3 983.1 988.5 968.8 DAY 23 15 31 17 13 20 11 3 12 8 23 26 MEAN QNH PRESSURE IN HPA 1018.0 1020.5 1016.8 1012.7 1008.3 1003.3 1000.4 1001.5 1008.0 1015.2 1019.0 1021.2 1012.1 MAX. QNH PRESSURE IN HPA 1023.0 1027.4 1020.8 1018.9 1014.9 1009.8 1002.7 1006.1 1012.2 1019.7 1027.9 1028.3 1028.3 DAY 1 9 17 6 18 3 27 29 27 24 29 18 MIN. QNH PRESSURE IN HPA 1011.8 1012.6 1009.5 1005.7 1000.7 997.0 995.7 996.7 1002.6 1010.5 1010.3 1015.8 995.7 DAY 23 15 31 17 13 20 11 3 12 8 23 26 MEAN QFF PRESSURE IN HPA 1018.1 1020.6 1016.2 1011.9 1006.9 1001.3 998.1 999.4 1006.1 1013.8 1018.5 1021.5 1011.0 MAX. QFF PRESSURE IN HPA 1023.3 1027.8 1021.0 1018.9 1013.8 1008.1 1000.5 1004.1 1010.5 1018.9 1028.5 1029.6 1029.6 DAY 1 9 17 6 18 3 25 29 27 24 29 18 MIN. QFF PRESSURE IN HPA 1011.8 1012.0 1008.3 1004.9 999.3 994.8 993.5 994.4 1000.9 1008.9 1009.6 1016.0 993.5 DAY 23 15 31 17 13 20 11 3 12 8 23 9 PRESSURE AT HOUR 0300 UTC. MEAN QFE PRESSURE IN HPA 990.7 993.0 989.8 985.8 981.8 976.9 974.0 975.1 981.5 988.6 991.8 993.8 985.2 MAX. QFE PRESSURE IN HPA 995.4 1000.0 993.5 991.8 989.2 983.2 976.4 979.1 986.1 992.9 1000.8 1001.8 1001.8 DAY 1 8 23 6 18 3 25 29 27 24 29 18 MIN. QFE PRESSURE IN HPA 984.8 984.9 981.5 979.1 974.5 971.2 969.2 970.5 976.1 983.5 983.8 987.3 969.2 DAY 13 15 31 23 13 20 11 3 12 8 23 9 MEAN QNH PRESSURE IN HPA 1018.0 1020.5 1017.2 1013.0 1009.0 1004.0 1001.0 1002.2 1008.7 1015.9 1019.2 1021.2 1012.5 MAX. QNH PRESSURE IN HPA 1022.9 1027.6 1020.9 1019.2 1016.5 1010.4 1003.5 1006.2 1013.4 1020.3 1028.4 1029.4 1029.4 DAY 1 8 23 6 18 3 25 29 27 24 29 18 MIN. QNH PRESSURE IN HPA 1012.0 1012.1 1008.7 1006.2 1001.5 998.1 996.1 997.4 1003.1 1010.7 1011.0 1014.6 996.1 DAY 13 15 31 23 13 20 11 3 12 8 23 9 MEAN QFF PRESSURE IN HPA 1018.2 1020.7 1016.7 1012.3 1007.6 1002.0 998.9 1000.2 1007.0 1014.7 1018.9 1021.7 1011.6 MAX. QFF PRESSURE IN HPA 1023.3 1028.2 1021.1 1019.2 1015.5 1008.9 1001.4 1004.3 1011.8 1019.7 1029.2 1030.9 1030.9 DAY 1 8 17 6 18 3 25 29 27 24 29 18 MIN. QFF PRESSURE IN HPA 1011.9 1011.7 1007.5 1004.9 1000.2 995.9 994.0 995.2 1001.5 1009.2 1010.5 1014.7 994.0 DAY 13 15 31 23 13 20 11 3 12 8 23 9 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION DEHLORAN (40796) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 32 41 N LONGITUDE 47 16 E DATA PROCESSING CENTER ELEVATION 232.0 M MEANS AND EXTREMES FOR THE YEAR 2004 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 0600 UTC. MEAN QFE PRESSURE IN HPA 991.9 994.5 991.2 987.1 982.9 977.8 975.1 976.2 982.8 990.0 993.2 995.1 986.5 MAX. QFE PRESSURE IN HPA 996.6 1002.0 995.1 993.8 990.3 984.7 977.2 980.5 987.7 994.6 1002.3 1003.0 1003.0 DAY 16 8 23 6 18 3 25 29 30 24 28 18 MIN. QFE PRESSURE IN HPA 984.3 987.5 981.5 981.2 976.1 971.9 970.1 971.3 976.9 985.2 986.5 988.0 970.1 DAY 13 14 31 20 13 19 11 3 12 8 23 25 MEAN QNH PRESSURE IN HPA 1019.4 1021.9 1018.6 1014.4 1010.1 1004.9 1002.1 1003.2 1010.0 1017.3 1020.6 1022.6 1013.8 MAX. QNH PRESSURE IN HPA 1024.1 1029.6 1022.6 1021.2 1017.7 1011.9 1004.3 1007.6 1015.0 1022.1 1029.9 1030.7 1030.7 DAY 16 8 23 6 18 3 25 29 30 24 28 18 MIN. QNH PRESSURE IN HPA 1011.5 1014.8 1008.7 1008.4 1003.1 998.9 997.0 998.2 1004.0 1012.5 1013.8 1015.3 997.0 DAY 13 14 31 20 13 19 11 3 12 8 23 25 MEAN QFF PRESSURE IN HPA 1019.6 1022.1 1018.1 1013.7 1008.6 1002.9 1000.0 1001.1 1008.3 1016.0 1020.2 1023.1 1012.8 MAX. QFF PRESSURE IN HPA 1024.4 1030.2 1022.0 1021.2 1016.5 1010.4 1002.1 1005.6 1013.5 1021.4 1030.6 1032.1 1032.1 DAY 16 8 17 6 18 3 25 29 30 24 28 18 MIN. QFF PRESSURE IN HPA 1011.4 1014.2 1007.6 1007.4 1001.8 996.7 994.8 996.0 1002.2 1010.8 1013.3 1015.4 994.8 DAY 13 14 31 20 13 19 11 3 12 8 18 25 PRESSURE AT HOUR 0900 UTC. MEAN QFE PRESSURE IN HPA 991.6 994.2 990.9 986.9 982.5 977.5 975.0 976.0 982.5 989.2 992.5 994.7 986.1 MAX. QFE PRESSURE IN HPA 996.2 1002.3 995.0 993.4 989.9 984.1 976.9 979.7 987.5 993.8 1001.8 1002.4 1002.4 DAY 16 8 8 6 18 3 6 29 30 24 28 18 MIN. QFE PRESSURE IN HPA 985.1 987.1 980.8 981.2 977.0 971.2 970.0 971.0 976.9 984.8 985.1 985.3 970.0 DAY 13 14 31 20 13 19 11 3 12 8 18 25 MEAN QNH PRESSURE IN HPA 1019.0 1021.7 1018.3 1014.1 1009.7 1004.6 1002.0 1003.0 1009.7 1016.6 1019.9 1022.1 1013.4 MAX. QNH PRESSURE IN HPA 1023.7 1029.9 1022.5 1020.8 1017.3 1011.3 1004.0 1006.8 1014.8 1021.2 1029.4 1030.0 1030.0 DAY 16 8 8 6 18 3 6 29 30 24 28 18 MIN. QNH PRESSURE IN HPA 1012.4 1014.4 1008.0 1008.4 1004.1 998.1 996.9 997.9 1004.0 1012.0 1012.4 1012.6 996.9 DAY 13 14 31 20 13 19 11 3 12 8 18 25 MEAN QFF PRESSURE IN HPA 1019.1 1021.8 1017.7 1013.3 1008.2 1002.5 999.7 1000.9 1007.8 1015.1 1019.4 1022.5 1012.3 MAX. QFF PRESSURE IN HPA 1023.9 1030.4 1021.9 1020.7 1016.1 1009.7 1001.8 1004.7 1013.0 1020.4 1029.9 1031.3 1031.3 DAY 16 8 23 6 18 3 6 29 30 24 28 18 MIN. QFF PRESSURE IN HPA 1012.2 1013.7 1006.9 1007.3 1002.8 995.9 994.7 995.6 1001.9 1010.3 1011.4 1012.8 994.7 DAY 13 14 31 23 13 19 11 3 12 8 18 25 PRESSURE AT HOUR 1200 UTC. MEAN QFE PRESSURE IN HPA 990.1 992.5 989.1 985.4 981.1 976.1 973.7 974.6 980.8 987.6 991.1 993.2 984.6 MAX. QFE PRESSURE IN HPA 995.1 1000.6 993.7 991.2 987.9 982.3 975.6 978.3 985.8 991.7 1000.4 1001.7 1001.7 DAY 16 8 8 7 18 3 13 23 30 24 28 18 MIN. QFE PRESSURE IN HPA 985.1 985.1 978.7 979.0 974.6 970.0 969.1 970.5 975.1 983.2 984.0 984.1 969.1 DAY 13 14 31 16 15 19 11 3 12 8 18 25 MEAN QNH PRESSURE IN HPA 1017.5 1019.9 1016.5 1012.7 1008.2 1003.1 1000.7 1001.6 1008.0 1014.9 1018.5 1020.7 1011.9 MAX. QNH PRESSURE IN HPA 1022.6 1028.2 1021.1 1018.6 1015.2 1009.5 1002.6 1005.4 1013.1 1019.1 1028.0 1029.3 1029.3 DAY 16 8 8 7 18 3 13 23 30 24 28 18 MIN. QNH PRESSURE IN HPA 1012.4 1012.4 1005.8 1006.1 1001.6 996.9 996.0 997.4 1002.1 1010.4 1011.2 1011.3 996.0 DAY 13 14 31 16 15 19 11 3 12 8 18 25 MEAN QFF PRESSURE IN HPA 1017.6 1019.9 1015.8 1011.9 1006.7 1001.1 998.5 999.5 1006.1 1013.5 1018.0 1021.0 1010.8 MAX. QFF PRESSURE IN HPA 1022.7 1028.7 1020.5 1018.3 1013.9 1007.8 1000.5 1003.3 1011.4 1018.3 1028.5 1030.5 1030.5 DAY 16 8 8 6 18 3 13 23 30 24 28 18 MIN. QFF PRESSURE IN HPA 1012.3 1011.7 1004.7 1005.0 1000.2 994.8 993.8 995.2 1000.4 1008.7 1010.3 1011.5 993.8 DAY 13 14 31 16 15 19 11 3 12 8 18 25 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION DEHLORAN (40796) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 32 41 N LONGITUDE 47 16 E DATA PROCESSING CENTER ELEVATION 232.0 M MEANS AND EXTREMES FOR THE YEAR 2004 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 1500 UTC. MEAN QFE PRESSURE IN HPA 990.3 992.5 988.8 985.0 980.6 975.6 972.9 974.1 980.6 987.5 991.4 993.6 984.4 MAX. QFE PRESSURE IN HPA 995.0 1000.4 993.9 990.3 987.2 982.0 975.1 977.7 985.8 991.4 1001.0 1001.1 1001.1 DAY 16 8 8 7 18 2 23 23 30 24 28 18 MIN. QFE PRESSURE IN HPA 984.8 985.0 977.8 978.4 974.1 969.3 968.5 970.0 974.7 983.4 984.8 984.4 968.5 DAY 23 14 31 16 15 19 11 3 1 8 18 25 MEAN QNH PRESSURE IN HPA 1017.7 1019.9 1016.1 1012.2 1007.7 1002.6 999.9 1001.1 1007.7 1014.9 1018.8 1021.0 1011.6 MAX. QNH PRESSURE IN HPA 1022.5 1028.0 1021.3 1017.7 1014.5 1009.2 1002.1 1004.8 1013.1 1018.8 1028.6 1028.7 1028.7 DAY 16 8 8 7 18 2 23 23 30 24 28 18 MIN. QNH PRESSURE IN HPA 1012.0 1012.2 1004.9 1005.5 1001.1 996.2 995.4 996.9 1001.7 1010.6 1012.0 1011.6 995.4 DAY 23 14 31 16 15 19 11 3 1 8 18 25 MEAN QFF PRESSURE IN HPA 1017.9 1020.1 1015.6 1011.5 1006.3 1000.6 997.7 999.1 1006.0 1013.6 1018.5 1021.5 1010.7 MAX. QFF PRESSURE IN HPA 1022.7 1028.5 1020.8 1017.5 1013.4 1007.5 1000.0 1002.8 1011.5 1018.1 1029.2 1030.0 1030.0 DAY 16 8 8 6 18 2 24 23 30 24 28 18 MIN. QFF PRESSURE IN HPA 1012.2 1011.6 1003.8 1004.5 999.8 994.1 993.2 994.8 999.8 1009.1 1011.2 1011.8 993.2 DAY 23 14 31 16 15 19 11 3 1 8 18 25 PRESSURE AT HOUR 1800 UTC. MEAN QFE PRESSURE IN HPA 991.0 993.4 989.6 986.0 981.7 976.7 974.0 975.2 981.6 988.6 992.1 994.2 985.3 MAX. QFE PRESSURE IN HPA 995.0 1000.6 994.0 991.2 988.4 983.0 976.3 979.0 987.2 992.4 1000.9 1001.1 1001.1 DAY 16 8 23 5 18 2 13 23 30 23 28 18 MIN. QFE PRESSURE IN HPA 986.1 986.4 978.9 980.0 975.0 970.0 968.9 970.6 975.4 984.6 986.3 986.5 968.9 DAY 23 14 31 16 12 19 10 2 1 8 22 25 MEAN QNH PRESSURE IN HPA 1018.4 1020.9 1017.0 1013.3 1008.9 1003.7 1001.0 1002.2 1008.8 1015.9 1019.5 1021.7 1012.6 MAX. QNH PRESSURE IN HPA 1022.5 1028.2 1021.4 1018.6 1015.7 1010.2 1003.3 1006.1 1014.5 1019.8 1028.5 1028.7 1028.7 DAY 16 8 23 5 18 2 13 23 30 23 28 18 MIN. QNH PRESSURE IN HPA 1013.4 1013.7 1006.0 1007.1 1002.0 996.9 995.8 997.5 1002.4 1011.8 1013.6 1013.8 995.8 DAY 23 14 31 16 12 19 10 2 1 8 22 25 MEAN QFF PRESSURE IN HPA 1018.6 1021.1 1016.4 1012.5 1007.4 1001.7 998.8 1000.1 1007.0 1014.6 1019.1 1022.2 1011.6 MAX. QFF PRESSURE IN HPA 1022.8 1028.7 1021.5 1018.8 1014.5 1008.6 1001.3 1004.0 1013.0 1019.1 1029.2 1030.0 1030.0 DAY 16 8 16 5 18 2 13 23 30 23 28 18 MIN. QFF PRESSURE IN HPA 1013.5 1013.1 1005.0 1006.3 1000.7 994.6 993.5 995.3 1000.4 1010.2 1013.1 1014.0 993.5 DAY 23 14 31 16 12 19 10 2 1 8 22 25 PRESSURE AT HOUR 2100 UTC. MEAN QFE PRESSURE IN HPA 991.0 993.5 989.6 986.5 981.8 976.6 973.9 975.1 981.4 988.3 992.0 994.1 985.3 MAX. QFE PRESSURE IN HPA 994.6 1000.6 994.1 992.1 987.9 983.3 976.7 978.7 987.2 994.6 1000.6 1000.4 1000.6 DAY 16 8 23 5 17 2 26 28 30 15 28 17 MIN. QFE PRESSURE IN HPA 986.1 986.4 979.6 979.7 974.9 970.3 969.2 970.1 975.4 983.9 984.7 988.2 969.2 DAY 23 14 31 16 12 19 10 2 1 7 22 25 MEAN QNH PRESSURE IN HPA 1018.4 1020.9 1016.9 1013.8 1009.0 1003.6 1000.9 1002.2 1008.6 1015.7 1019.4 1021.6 1012.6 MAX. QNH PRESSURE IN HPA 1022.1 1028.2 1021.6 1019.5 1015.2 1010.5 1003.8 1005.8 1014.5 1022.1 1028.2 1028.0 1028.2 DAY 16 8 23 5 17 2 26 28 30 15 28 17 MIN. QNH PRESSURE IN HPA 1013.4 1013.7 1006.7 1006.8 1001.9 997.2 996.1 997.0 1002.4 1011.1 1011.9 1015.5 996.1 DAY 23 14 31 16 12 19 10 2 1 7 22 25 MEAN QFF PRESSURE IN HPA 1018.5 1021.0 1016.3 1012.9 1007.5 1001.5 998.7 1000.0 1006.7 1014.2 1019.0 1021.9 1011.5 MAX. QFF PRESSURE IN HPA 1022.3 1028.6 1021.4 1019.6 1014.1 1008.8 1001.5 1003.8 1012.8 1020.5 1028.8 1029.2 1029.2 DAY 28 8 16 5 17 2 26 28 30 15 28 17 MIN. QFF PRESSURE IN HPA 1013.4 1013.1 1005.8 1006.0 1000.5 995.0 993.8 994.7 1000.4 1009.4 1011.1 1015.8 993.8 DAY 23 14 31 16 12 19 10 2 1 7 22 25 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION DEHLORAN (40796) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 32 41 N LONGITUDE 47 16 E DATA PROCESSING CENTER ELEVATION 232.0 M MEANS AND EXTREMES FOR THE YEAR 2005 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AIR TEMPERATURE (C) 11.3 13.0 18.1 26.1 32.1 37.2 40.1 38.6 34.0 28.3 19.0 16.3 26.2 MINIMUN AIR TEMPERATURE (C) 7.4 8.8 12.7 19.9 25.8 29.8 32.7 31.5 26.4 22.1 14.3 11.6 20.2 DAYS WITH MINIMUM TEMP. >=21 0 0 0 11 26 30 31 31 30 23 2 0 184 DAYS WITH MINIMUM TEMP. <=-4 0 0 0 0 0 0 0 0 0 0 0 0 0 DAYS WITH FREEZING MIN.<= 0 0 0 0 0 0 0 0 0 0 0 0 0 0 TEMPERATURE RECORDS LOWEST(C) 3.8 2.2 6.0 11.6 15.0 24.8 27.6 27.2 21.4 12.2 11.0 4.8 2.2 DAY 12 12 25 6 6 7 7 30 20 23 15 27 MAXIMUM AIR TEMPERATURE (C) 15.8 17.8 23.2 32.0 37.6 43.7 47.2 45.5 41.4 35.0 25.2 22.5 32.2 DAYS WITH MAXIMUM TEMP. >=30 0 0 2 21 29 30 31 31 30 26 4 0 204 DAYS WITH MAXIMUM TEMP. <= 0 0 0 0 0 0 0 0 0 0 0 0 0 0 TEMPERATURE RECORDS HIGHEST(C) 20.4 23.4 31.0 40.4 42.0 48.0 50.2 49.6 45.8 41.4 33.4 28.5 50.2 DAY 17 20 31 23 18 16 17 16 11 12 1 8 DIF. BETWEEN (MAX.-MIN.) (C) 8.4 9.0 10.5 12.1 11.8 13.9 14.5 14.0 15.0 12.9 10.9 10.9 12.0 MEAN DAILY TEMP. (MDT) (C) 11.6 13.3 17.9 25.9 31.7 36.8 39.9 38.5 33.9 28.6 19.7 17.0 26.2 COOLING DEG. DAYS(BASE 21 0C) 0.0 0.0 6.8 154.0 332.4 472.8 586.9 541.9 386.7 235.0 25.5 0.4 2742.6 HEATING DEG. DAYS(BASE 18 0C) 198.7 131.2 34.5 0.0 0.0 0.0 0.0 0.0 0.0 0.0 8.2 59.0 431.4 DEWPOINT (MEAN C) 5.4 4.6 6.5 8.7 7.7 10.8 10.4 12.0 8.5 4.9 6.5 4.8 7.6 MIXING RATIO (G/KG) 5.77 5.55 6.47 7.58 6.92 8.91 8.42 9.47 7.31 5.83 6.34 5.67 7.02 VAPOUR PRESSURE (HPA) 9.13 8.76 10.17 11.85 10.80 13.76 12.99 14.60 11.39 9.17 10.00 8.96 10.96 SATURATION DEF. (HPA) 4.57 6.81 11.26 23.52 38.93 51.79 63.33 55.66 43.67 31.13 12.82 10.34 29.49 RELATIVE HUMIDITY (MEAN %) 70 59 51 36 24 22 18 22 22 24 47 51 37 RELATIVE HUMIDITY (MAX. %) 86 78 68 52 35 30 29 29 29 32 60 64 49 RELATIVE HUMIDITY (MIN. %) 49 40 35 24 16 16 12 15 16 16 34 33 26 RELATIVE HUMIDITY (MEAN% 03UTC) 82 73 65 46 32 28 27 28 28 30 57 59 46 RELATIVE HUMIDITY (MEAN% 09UTC) 60 48 44 28 19 18 14 17 17 18 40 43 31 RELATIVE HUMIDITY (MEAN% 15UTC) 64 51 42 29 18 20 13 18 18 21 43 46 32 RH=0 => RELATIVE HUMIDITY < 0.5% AMOUNT OF PRECIPITATION MM. 70.6 29.2 58.7 21.6 0.4 0.0 0.0 0.0 0.0 0.0 18.3 15.7 214.5 DAYS WITH PRECIPITATION >=10 5 1 2 1 0 0 0 0 0 0 1 0 10 DAYS WITH PRECIPITATION >= 5 5 1 3 2 0 0 0 0 0 0 1 1 13 DAYS WITH PRECIPITATION >= 1 6 5 6 3 0 0 0 0 0 0 2 4 26 DAYS WITH PRECIPITATION 8 5 7 4 1 0 0 0 0 0 3 5 33 GREATEST DAILY PRECIPITATION 18.2 19.0 31.1 13.0 0.4 0.0 0.0 0.0 0.0 0.0 17.0 8.0 31.1 DAY 22 9 11 26 3 ** ** ** ** ** 16 25 DAY WITH THUNDER STORM 2 0 1 2 1 0 0 0 0 0 1 0 7 DAYS WITH SNOW OR SLEET 0 0 0 0 0 0 0 0 0 0 0 0 0 DAYS WITH DUST 1 0 1 4 9 12 8 11 3 0 0 0 49 WIND DIRECTION (PREVAILING) 90 90 270 270 270 270 270 270 270 270 270 90 270 PREVAILING WIND SPEED(KNOTS) 13.8 9.8 8.7 8.3 10.4 12.6 11.2 10.4 10.6 8.0 7.3 10.3 9.9 PREVAILING WIND PERCENT 15.3 14.3 16.9 16.7 25.8 39.2 36.3 31.5 25.4 15.3 10.8 15.3 20.8 CALMS PERCENT OF WIND 43.1 42.0 33.1 27.9 19.8 20.4 20.2 28.6 31.3 27.0 44.6 47.2 32.0 NO. OF WIND OBSERVATION 248 224 248 240 248 240 248 248 240 248 240 248 2920 VECTOR WIND DIRECTION (MEAN) 94 116 166 148 281 285 275 274 286 160 253 96 275 VECTOR WIND MAGNITUDE(KNOTS) 1.6 1.4 0.3 1.1 2.0 6.1 4.4 3.7 3.5 0.3 0.2 1.7 1.2 WIND STEADINESES (MEAN %) 33.3 33.3 5.9 17.5 29.0 77.2 61.1 62.7 66.0 5.8 5.9 45.9 21.8 WIND SPEED (MEAN KNOTS) 4.8 4.2 5.1 6.3 6.9 7.9 7.2 5.9 5.3 5.2 3.4 3.7 5.5 FASTEST WIND DIRECTION 90 90 90 100 90 280 280 270 280 80 90 90 90 FASTEST WIND SPEED (KNOTS) 33 27 31 29 29 29 29 29 23 19 29 33 33 DAY 3 1 4 10 14 9 5 27 5 17 5 16 DAYS WITH SKY CLEAR (0-2)/8 16 12 20 22 22 30 30 30 30 25 20 17 274 DAYS WITH P.CLOUDY (3-6)/8 10 13 4 5 8 0 1 0 0 5 9 8 63 DAYS WITH CLOUDY (7-8)/8 5 3 7 3 1 0 0 0 0 1 1 6 27 DAYS WITH VISIBILITY =< 2 KM 3 0 0 0 1 0 2 4 0 0 2 5 17 DURATION OF SUNSHINE HOURS 180.1 197.3 244.7 249.8 292.3 362.1 347.4 323.4 327.1 274.0 218.5 185.1 3201.8 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION DEHLORAN (40796) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 32 41 N LONGITUDE 47 16 E DATA PROCESSING CENTER ELEVATION 232.0 M MEANS AND EXTREMES FOR THE YEAR 2005 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL MEAN QFE PRESSURE IN HPA 993.0 991.1 989.6 987.1 982.3 976.4 973.4 975.0 980.4 988.4 991.8 992.9 985.1 MAX. QFE PRESSURE IN HPA 999.9 997.7 995.7 994.8 987.3 983.7 978.9 979.7 987.4 994.5 998.8 1000.5 1000.5 DAY-HOUR 21- 9 14- 9 6- 9 5- 6 9- 9 1- 6 19- 9 28- 9 30-21 23- 6 23- 6 27- 6 MIN. QFE PRESSURE IN HPA 982.6 984.2 979.8 979.9 976.8 969.9 968.1 969.1 974.9 982.4 985.4 983.6 968.1 DAY-HOUR 23- 0 4-15 23-18 30-15 3- 0 19-12 5-15 7-15 11-12 4- 0 5-12 23-12 MEAN QNH PRESSURE IN HPA 1020.5 1018.5 1017.0 1014.4 1009.4 1003.4 1000.4 1002.1 1007.5 1015.7 1019.2 1020.3 1012.4 MAX. QNH PRESSURE IN HPA 1027.5 1025.2 1023.2 1022.3 1014.6 1010.9 1006.0 1006.8 1014.7 1022.0 1026.4 1028.1 1028.1 DAY-HOUR 21- 9 14- 9 6- 9 5- 6 9- 9 1- 6 19- 9 28- 9 30-21 23- 6 23- 6 27- 6 MIN. QNH PRESSURE IN HPA 1009.8 1011.4 1006.9 1007.0 1003.9 996.8 995.0 996.0 1001.9 1009.6 1012.7 1010.8 995.0 DAY-HOUR 23- 0 4-15 23-18 30-15 3- 0 19-12 5-15 7-15 11-12 4- 0 5-12 23-12 MEAN QFF PRESSURE IN HPA 1020.9 1018.7 1016.7 1013.4 1007.9 1001.4 998.1 999.9 1005.8 1014.5 1018.9 1020.3 1011.4 MAX. QFF PRESSURE IN HPA 1027.9 1025.8 1023.3 1022.1 1013.3 1009.3 1003.6 1004.7 1013.2 1021.6 1026.0 1029.0 1029.0 DAY-HOUR 21- 9 14- 9 6- 6 5- 6 6- 9 1- 6 19- 9 28- 9 30-21 23- 6 23- 6 27- 6 MIN. QFF PRESSURE IN HPA 1009.9 1011.5 1006.2 1005.5 1002.2 994.6 992.9 993.8 999.8 1008.0 1011.6 1010.5 992.9 DAY-HOUR 3- 3 4-15 23-18 26- 0 3- 0 19-12 5-15 7-12 11-12 20- 0 5-12 23-12 PRESSURE AT HOUR 0000 UTC. MEAN QFE PRESSURE IN HPA 993.0 990.9 989.1 986.5 981.8 976.1 972.9 974.5 979.7 987.8 991.6 992.7 984.7 MAX. QFE PRESSURE IN HPA 997.6 995.9 993.8 993.1 985.9 982.8 975.9 977.7 983.5 992.9 996.2 1000.0 1000.0 DAY 13 11 6 5 17 2 19 30 28 23 23 27 MIN. QFE PRESSURE IN HPA 982.6 986.0 980.3 980.1 976.8 971.1 970.3 969.6 975.5 982.4 986.5 985.5 969.6 DAY 23 5 24 26 3 20 5 8 12 4 8 24 MEAN QNH PRESSURE IN HPA 1020.4 1018.2 1016.5 1013.8 1009.0 1003.2 999.9 1001.5 1006.8 1015.1 1019.0 1020.1 1012.0 MAX. QNH PRESSURE IN HPA 1025.1 1023.4 1021.2 1020.5 1013.2 1010.0 1002.9 1004.8 1010.7 1020.3 1023.7 1027.6 1027.6 DAY 13 11 6 5 17 2 19 30 28 23 23 27 MIN. QNH PRESSURE IN HPA 1009.8 1013.3 1007.4 1007.2 1003.9 998.0 997.2 996.5 1002.5 1009.6 1013.8 1012.8 996.5 DAY 23 5 24 26 3 20 5 8 12 4 8 24 MEAN QFF PRESSURE IN HPA 1020.8 1018.4 1016.2 1012.8 1007.4 1001.1 997.6 999.3 1005.0 1013.9 1018.6 1019.9 1010.9 MAX. QFF PRESSURE IN HPA 1025.9 1024.4 1021.4 1020.3 1012.1 1008.3 1000.6 1002.7 1009.3 1019.9 1023.2 1028.2 1028.2 DAY 13 11 6 5 7 2 20 30 28 23 23 27 MIN. QFF PRESSURE IN HPA 1010.3 1013.3 1006.8 1005.5 1002.2 995.9 995.1 994.2 1000.3 1008.0 1013.2 1012.4 994.2 DAY 23 5 24 26 3 20 5 8 12 20 8 24 PRESSURE AT HOUR 0300 UTC. MEAN QFE PRESSURE IN HPA 992.8 990.9 989.5 987.0 982.2 976.6 973.4 975.0 980.4 988.2 991.8 992.6 985.0 MAX. QFE PRESSURE IN HPA 998.2 995.6 994.1 993.2 985.5 983.5 977.3 978.4 984.7 992.7 997.2 999.8 999.8 DAY 21 16 6 5 7 2 19 27 28 23 23 27 MIN. QFE PRESSURE IN HPA 982.8 985.8 981.8 981.3 977.9 971.2 970.4 970.0 976.5 982.6 986.2 986.5 970.0 DAY 3 7 24 30 3 19 5 8 12 4 8 24 MEAN QNH PRESSURE IN HPA 1020.3 1018.3 1016.9 1014.3 1009.4 1003.6 1000.4 1002.0 1007.6 1015.5 1019.2 1020.1 1012.3 MAX. QNH PRESSURE IN HPA 1025.7 1023.1 1021.6 1020.6 1012.8 1010.7 1004.4 1005.5 1011.9 1020.1 1024.7 1027.4 1027.4 DAY 21 16 6 5 7 2 19 27 28 23 23 27 MIN. QNH PRESSURE IN HPA 1010.0 1013.1 1009.0 1008.5 1005.0 998.1 997.3 996.9 1003.6 1009.8 1013.5 1013.8 996.9 DAY 3 7 24 30 3 19 5 8 12 4 8 24 MEAN QFF PRESSURE IN HPA 1020.7 1018.6 1016.7 1013.4 1007.9 1001.7 998.2 1000.0 1005.9 1014.4 1018.9 1020.1 1011.4 MAX. QFF PRESSURE IN HPA 1026.2 1023.8 1021.9 1020.5 1012.0 1009.2 1002.0 1003.5 1010.7 1019.8 1024.4 1028.3 1028.3 DAY 21 16 6 5 7 2 19 28 28 23 23 27 MIN. QFF PRESSURE IN HPA 1009.9 1013.3 1008.6 1007.4 1003.6 996.1 995.2 994.9 1001.6 1008.6 1013.0 1013.7 994.9 DAY 3 7 24 30 3 19 5 8 12 4 8 24 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION DEHLORAN (40796) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 32 41 N LONGITUDE 47 16 E DATA PROCESSING CENTER ELEVATION 232.0 M MEANS AND EXTREMES FOR THE YEAR 2005 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 0600 UTC. MEAN QFE PRESSURE IN HPA 994.3 992.2 990.9 988.5 983.3 977.4 974.4 976.2 981.5 989.7 993.1 994.2 986.3 MAX. QFE PRESSURE IN HPA 999.7 997.4 995.6 994.8 987.1 983.7 978.8 979.5 986.0 994.5 998.8 1000.5 1000.5 DAY 21 16 6 5 9 1 19 28 28 23 23 27 MIN. QFE PRESSURE IN HPA 985.8 987.6 983.8 982.1 979.8 971.6 970.5 971.2 977.0 984.1 987.1 987.3 970.5 DAY 3 4 24 30 3 19 5 7 11 4 8 23 MEAN QNH PRESSURE IN HPA 1021.7 1019.7 1018.2 1015.8 1010.6 1004.4 1001.4 1003.3 1008.7 1017.1 1020.6 1021.6 1013.6 MAX. QNH PRESSURE IN HPA 1027.3 1024.9 1023.1 1022.3 1014.4 1010.9 1005.9 1006.6 1013.3 1022.0 1026.4 1028.1 1028.1 DAY 21 16 6 5 9 1 19 28 28 23 23 27 MIN. QNH PRESSURE IN HPA 1013.1 1014.9 1011.0 1009.3 1006.9 998.5 997.4 998.1 1004.1 1011.3 1014.4 1014.6 997.4 DAY 3 4 24 30 3 19 5 7 11 4 8 23 MEAN QFF PRESSURE IN HPA 1022.2 1020.0 1018.0 1014.8 1009.0 1002.4 999.2 1001.2 1007.0 1016.0 1020.3 1021.7 1012.6 MAX. QFF PRESSURE IN HPA 1027.7 1025.6 1023.3 1022.1 1013.1 1009.3 1003.5 1004.6 1012.0 1021.6 1026.0 1029.0 1029.0 DAY 21 16 6 5 6 1 19 28 28 23 23 27 MIN. QFF PRESSURE IN HPA 1013.0 1015.1 1010.5 1008.1 1005.6 996.3 995.3 996.0 1002.1 1010.1 1013.9 1014.2 995.3 DAY 3 4 24 30 3 19 5 7 11 4 8 23 PRESSURE AT HOUR 0900 UTC. MEAN QFE PRESSURE IN HPA 993.7 991.9 990.7 988.2 983.2 977.1 974.3 975.9 981.3 989.3 992.5 993.5 986.0 MAX. QFE PRESSURE IN HPA 999.9 997.7 995.7 994.6 987.3 983.2 978.9 979.7 986.1 993.7 998.3 1000.0 1000.0 DAY 21 14 6 5 9 3 19 28 30 22 23 27 MIN. QFE PRESSURE IN HPA 984.9 986.6 984.6 982.4 979.9 971.3 969.9 970.7 976.5 984.1 985.8 986.3 969.9 DAY 3 4 23 30 3 19 5 7 11 20 5 23 MEAN QNH PRESSURE IN HPA 1021.2 1019.3 1018.1 1015.5 1010.4 1004.2 1001.3 1003.0 1008.4 1016.6 1019.9 1021.0 1013.2 MAX. QNH PRESSURE IN HPA 1027.5 1025.2 1023.2 1022.1 1014.6 1010.4 1006.0 1006.8 1013.4 1021.1 1025.8 1027.6 1027.6 DAY 21 14 6 5 9 3 19 28 30 22 23 27 MIN. QNH PRESSURE IN HPA 1012.1 1013.9 1011.8 1009.6 1007.0 998.2 996.8 997.6 1003.6 1011.3 1013.1 1013.6 996.8 DAY 3 4 23 30 3 19 5 7 11 20 5 23 MEAN QFF PRESSURE IN HPA 1021.5 1019.5 1017.8 1014.4 1008.8 1002.1 999.0 1000.8 1006.6 1015.4 1019.5 1020.9 1012.2 MAX. QFF PRESSURE IN HPA 1027.9 1025.8 1023.2 1021.9 1013.3 1008.7 1003.6 1004.7 1011.8 1020.6 1025.4 1028.2 1028.2 DAY 21 14 6 5 6 3 19 28 30 22 23 27 MIN. QFF PRESSURE IN HPA 1011.9 1014.1 1011.1 1008.4 1005.6 995.9 994.6 995.2 1001.5 1009.9 1012.1 1013.2 994.6 DAY 3 4 23 30 13 19 5 7 11 20 5 23 PRESSURE AT HOUR 1200 UTC. MEAN QFE PRESSURE IN HPA 992.2 990.3 989.0 986.5 982.0 975.9 973.1 974.6 979.8 987.8 991.1 992.0 984.5 MAX. QFE PRESSURE IN HPA 997.5 996.6 993.6 992.7 986.0 982.3 977.2 978.5 984.9 992.4 996.8 998.2 998.2 DAY 21 14 6 5 6 3 19 29 30 23 23 27 MIN. QFE PRESSURE IN HPA 984.9 984.5 981.3 980.6 979.2 969.9 968.3 969.2 974.9 982.4 985.4 983.6 968.3 DAY 3 4 23 30 18 19 5 7 11 4 5 23 MEAN QNH PRESSURE IN HPA 1019.6 1017.7 1016.3 1013.8 1009.1 1003.0 1000.1 1001.6 1006.9 1015.1 1018.5 1019.4 1011.8 MAX. QNH PRESSURE IN HPA 1025.0 1024.1 1021.0 1020.1 1013.3 1009.5 1004.3 1005.6 1012.1 1019.8 1024.3 1025.7 1025.7 DAY 21 14 6 5 6 3 19 29 30 23 23 27 MIN. QNH PRESSURE IN HPA 1012.1 1011.7 1008.5 1007.8 1006.3 996.8 995.2 996.1 1001.9 1009.6 1012.7 1010.8 995.2 DAY 3 4 23 30 18 19 5 7 11 4 5 23 MEAN QFF PRESSURE IN HPA 1020.0 1017.8 1016.0 1012.7 1007.6 1000.9 997.8 999.4 1005.1 1013.9 1018.0 1019.3 1010.7 MAX. QFF PRESSURE IN HPA 1025.4 1024.6 1021.1 1019.9 1012.8 1007.7 1001.9 1003.3 1010.6 1019.4 1023.8 1026.3 1026.3 DAY 21 14 6 5 6 3 19 29 30 23 23 27 MIN. QFF PRESSURE IN HPA 1012.0 1011.8 1007.8 1006.5 1004.4 994.6 993.0 993.8 999.8 1008.2 1011.6 1010.5 993.0 DAY 3 4 23 30 18 19 5 7 11 4 5 23 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION DEHLORAN (40796) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 32 41 N LONGITUDE 47 16 E DATA PROCESSING CENTER ELEVATION 232.0 M MEANS AND EXTREMES FOR THE YEAR 2005 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 1500 UTC. MEAN QFE PRESSURE IN HPA 992.4 990.3 988.6 986.0 981.1 975.3 972.4 974.1 979.6 987.8 991.1 992.3 984.3 MAX. QFE PRESSURE IN HPA 997.7 996.6 993.1 992.1 985.1 981.7 975.8 978.5 985.3 992.3 996.7 998.6 998.6 DAY 21 15 6 4 9 3 19 29 30 23 23 26 MIN. QFE PRESSURE IN HPA 986.4 984.2 980.1 979.9 978.1 970.0 968.1 969.1 975.3 982.6 985.4 984.4 968.1 DAY 3 4 23 30 18 19 5 7 11 4 5 23 MEAN QNH PRESSURE IN HPA 1019.8 1017.7 1015.9 1013.3 1008.3 1002.4 999.4 1001.1 1006.7 1015.1 1018.5 1019.7 1011.5 MAX. QNH PRESSURE IN HPA 1025.2 1024.1 1020.5 1019.5 1012.4 1008.9 1002.8 1005.6 1012.6 1019.7 1024.2 1026.2 1026.2 DAY 21 15 6 4 9 3 19 29 30 23 23 26 MIN. QNH PRESSURE IN HPA 1013.7 1011.4 1007.2 1007.0 1005.2 996.9 995.0 996.0 1002.3 1009.8 1012.7 1011.6 995.0 DAY 3 4 23 30 18 19 5 7 11 4 5 23 MEAN QFF PRESSURE IN HPA 1020.3 1018.0 1015.7 1012.3 1006.8 1000.4 997.2 999.0 1005.0 1014.0 1018.2 1019.7 1010.6 MAX. QFF PRESSURE IN HPA 1025.8 1024.8 1020.7 1019.3 1011.4 1007.2 1000.6 1003.5 1011.3 1019.5 1024.0 1026.8 1026.8 DAY 12 15 6 5 6 1 19 29 30 23 23 26 MIN. QFF PRESSURE IN HPA 1013.6 1011.5 1006.7 1005.8 1003.3 994.9 992.9 993.9 1000.3 1008.6 1011.7 1011.3 992.9 DAY 3 4 23 25 18 19 5 7 11 4 5 23 PRESSURE AT HOUR 1800 UTC. MEAN QFE PRESSURE IN HPA 993.0 991.1 989.5 987.1 982.2 976.3 973.4 975.1 980.6 988.4 991.8 993.0 985.1 MAX. QFE PRESSURE IN HPA 998.6 997.0 993.6 993.6 985.8 983.0 976.4 979.5 986.3 993.4 996.7 999.4 999.4 DAY 12 14 6 4 9 1 19 29 30 22 23 26 MIN. QFE PRESSURE IN HPA 986.0 985.7 979.8 981.1 978.0 971.7 969.8 970.1 976.1 983.7 987.6 985.8 969.8 DAY 22 4 23 25 2 19 5 7 11 3 5 23 MEAN QNH PRESSURE IN HPA 1020.4 1018.5 1016.8 1014.3 1009.4 1003.4 1000.4 1002.1 1007.7 1015.7 1019.2 1020.5 1012.4 MAX. QNH PRESSURE IN HPA 1026.2 1024.5 1021.0 1021.0 1013.1 1010.2 1003.5 1006.6 1013.6 1020.8 1024.2 1027.0 1027.0 DAY 12 14 6 4 9 1 19 29 30 22 23 26 MIN. QNH PRESSURE IN HPA 1013.3 1013.0 1006.9 1008.3 1005.1 998.6 996.7 997.0 1003.1 1010.9 1014.9 1013.1 996.7 DAY 22 4 23 25 2 19 5 7 11 3 5 23 MEAN QFF PRESSURE IN HPA 1020.9 1018.8 1016.6 1013.3 1007.8 1001.4 998.1 1000.0 1006.0 1014.6 1018.9 1020.5 1011.4 MAX. QFF PRESSURE IN HPA 1027.0 1025.2 1021.0 1020.8 1012.2 1008.6 1001.2 1004.5 1012.2 1020.5 1024.0 1027.8 1027.8 DAY 12 14 6 4 6 1 19 29 30 22 23 26 MIN. QFF PRESSURE IN HPA 1013.8 1012.9 1006.2 1006.5 1003.6 996.5 994.6 994.9 1001.1 1009.6 1014.2 1012.6 994.6 DAY 22 28 23 25 2 19 5 7 11 3 5 23 PRESSURE AT HOUR 2100 UTC. MEAN QFE PRESSURE IN HPA 992.9 991.1 989.6 987.1 982.4 976.3 973.4 975.1 980.4 988.2 991.9 992.9 985.1 MAX. QFE PRESSURE IN HPA 998.1 997.0 993.5 993.4 986.1 983.1 976.7 979.6 987.4 993.7 995.9 999.8 999.8 DAY 12 14 5 4 6 1 19 29 30 22 22 26 MIN. QFE PRESSURE IN HPA 983.5 985.3 980.0 981.6 978.2 971.9 969.4 970.1 975.7 983.0 987.3 986.0 969.4 DAY 22 28 23 30 2 19 5 7 11 3 7 23 MEAN QNH PRESSURE IN HPA 1020.4 1018.4 1017.0 1014.4 1009.6 1003.3 1000.4 1002.1 1007.5 1015.6 1019.3 1020.4 1012.4 MAX. QNH PRESSURE IN HPA 1025.6 1024.5 1020.9 1020.8 1013.4 1010.3 1003.8 1006.7 1014.7 1021.1 1023.4 1027.4 1027.4 DAY 12 14 5 4 6 1 19 29 30 22 22 26 MIN. QNH PRESSURE IN HPA 1010.7 1012.6 1007.1 1008.8 1005.3 998.9 996.3 997.0 1002.7 1010.2 1014.6 1013.3 996.3 DAY 22 28 23 30 2 19 5 7 11 3 7 23 MEAN QFF PRESSURE IN HPA 1020.7 1018.6 1016.7 1013.3 1008.0 1001.3 998.1 999.9 1005.7 1014.3 1018.9 1020.3 1011.3 MAX. QFF PRESSURE IN HPA 1026.3 1025.1 1021.0 1020.6 1012.7 1008.6 1001.3 1004.6 1013.2 1020.7 1023.1 1028.1 1028.1 DAY 12 14 5 4 6 1 19 29 30 22 23 26 MIN. QFF PRESSURE IN HPA 1011.2 1012.2 1006.5 1007.5 1003.7 996.6 994.1 994.6 1000.5 1008.8 1014.2 1012.9 994.1 DAY 22 28 23 30 2 19 5 7 11 19 7 23 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION DEHLORAN (40796) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 32 41 N LONGITUDE 47 16 E DATA PROCESSING CENTER ELEVATION 232.0 M CLIMATOLOGICAL NORMALS FOR THE PERIOD 1987-2005 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AIR TEMPERATURE (C) 12.6 14.4 18.5 25.7 32.8 38.2 40.2 39.7 35.5 29.0 20.5 14.6 26.8 MINIMUN AIR TEMPERATURE (C) 8.0 8.9 12.4 18.4 24.9 29.2 31.4 30.8 26.9 21.9 14.4 9.9 19.8 DAYS WITH MINIMUM TEMP. >=21 0.0 0.0 0.4 7.7 26.0 29.8 31.0 31.0 29.7 19.3 1.1 0.0 176.0 DAYS WITH MINIMUM TEMP. <=-4 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 DAYS WITH FREEZING MIN.<= 0 0.1 0.3 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.1 0.5 TEMPERATURE RECORDS LOWEST(C) -0.4 -0.2 2.5 7.2 15.0 19.8 24.0 22.7 18.0 12.2 1.8 -0.4 -0.4 YEAR-DAY 92- 4 97- 6 92- 1 97-12 5- 6 2- 4 92-13 87-20 92-29 5-23 93-14 4-18 92- 4 MAXIMUM AIR TEMPERATURE (C) 16.6 18.8 23.0 30.6 37.6 43.5 46.1 45.8 41.5 34.5 25.4 19.0 31.9 DAYS WITH MAXIMUM TEMP. >=30 0.0 0.0 1.6 17.0 30.2 29.9 31.0 31.0 30.0 27.2 3.8 0.0 201.7 DAYS WITH MAXIMUM TEMP. <= 0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 TEMPERATURE RECORDS HIGHEST(C) 24.8 27.5 33.8 42.0 47.6 50.8 50.6 51.8 47.6 42.6 34.6 28.5 51.8 YEAR-DAY 94- 1 87- 2 1-31 91-27 99-31 98-23 90-25 3- 8 4- 8 96- 1 1- 5 5- 8 3- 8 DIF. BETWEEN (MAX.-MIN.) (C) 8.6 9.9 10.6 12.2 12.7 14.3 14.7 15.0 14.6 12.6 11.0 9.1 12.1 MEAN DAILY TEMP. (MDT) (C) 12.3 13.8 17.7 24.5 31.3 36.4 38.7 38.3 34.2 28.2 19.9 14.4 25.8 STANDARD DEVIATION OF MDT(C) 1.70 1.57 2.00 1.90 1.41 0.76 0.99 1.18 0.72 1.40 1.17 2.19 1.42 COOLING DEG. DAYS(BASE 21 0C) 0.1 0.2 10.2 115.6 318.5 459.0 549.9 537.4 395.9 221.6 25.6 0.3 2634.3 HEATING DEG. DAYS(BASE 18 0C) 178.3 119.8 47.9 1.8 0.0 0.0 0.0 0.0 0.0 0.0 19.4 118.1 485.3 DEWPOINT (MEAN C) 5.8 4.6 6.5 7.9 9.3 10.3 10.7 9.7 7.7 7.1 7.2 6.9 7.8 MIXING RATIO (G/KG) 6.00 5.63 6.44 7.19 8.06 8.68 8.78 8.25 7.31 6.90 6.88 6.54 7.22 VAPOUR PRESSURE (HPA) 9.49 8.89 10.12 11.25 12.53 13.40 13.52 12.75 11.37 10.81 10.83 10.33 11.27 SATURATION DEF. (HPA) 5.50 8.11 12.09 23.45 39.05 55.71 63.34 62.24 48.58 30.90 14.24 6.96 30.85 RELATIVE HUMIDITY (MEAN %) 66 56 50 36 26 20 19 18 20 29 46 63 37 RELATIVE HUMIDITY (MAX. %) 82 74 67 53 37 30 28 27 29 38 61 78 50 RELATIVE HUMIDITY (MIN. %) 50 39 35 25 19 15 13 12 14 20 33 48 27 RELATIVE HUMIDITY (MEAN% 03UTC) 78 69 64 50 36 28 26 25 27 36 57 73 47 RELATIVE HUMIDITY (MEAN% 09UTC) 59 48 43 30 22 17 16 15 17 24 39 56 32 RELATIVE HUMIDITY (MEAN% 15UTC) 64 50 43 31 22 18 15 14 18 27 44 62 34 RH=0 => RELATIVE HUMIDITY < 0.5% AMOUNT OF PRECIPITATION MM. 67.5 44.2 49.6 35.7 4.7 0.0 0.3 0.1 0.0 5.8 29.8 53.1 290.8 DAYS WITH PRECIPITATION >=10 2.1 1.6 1.5 1.0 0.1 0.0 0.0 0.0 0.0 0.1 1.1 1.8 9.3 DAYS WITH PRECIPITATION >= 5 3.1 2.3 3.0 2.4 0.3 0.0 0.0 0.0 0.0 0.4 1.8 3.3 16.6 DAYS WITH PRECIPITATION >= 1 6.2 4.5 5.5 4.1 1.1 0.0 0.2 0.1 0.0 1.4 3.2 5.4 31.7 DAYS WITH PRECIPITATION 8.1 6.4 8.1 6.6 2.4 0.1 0.2 0.1 0.0 2.5 4.2 7.3 46.0 GREATEST DAILY PRECIPITATION 66.0 47.0 57.5 59.0 16.0 0.1 2.0 1.0 0.0 14.0 74.0 39.0 74.0 YEAR-DAY 96- 5 96-20 96-22 96-14 92- 9 98-19 87-30 87-10 **-** 87-25 94-23 91-22 94 DAY WITH THUNDER STORM 0.9 0.5 1.3 1.7 1.0 0.1 0.2 0.1 0.0 0.7 1.0 1.1 8.6 DAYS WITH SNOW OR SLEET 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 DAYS WITH DUST 0.6 1.0 2.7 4.6 6.4 6.8 9.6 5.9 5.8 2.9 1.2 0.2 47.7 WIND DIRECTION (PREVAILING) 90 90 90 270 270 270 270 270 270 270 90 90 270 PREVAILING WIND SPEED(KNOTS) 13.1 12.8 12.8 9.1 10.9 11.4 11.8 11.3 10.0 7.9 11.9 11.3 9.7 PREVAILING WIND PERCENT 16.0 14.2 16.5 15.9 23.0 31.0 24.0 22.6 24.2 14.2 12.7 14.5 17.4 CALMS PERCENT OF WIND 55.5 49.6 45.4 36.6 35.2 34.2 39.8 43.6 45.5 50.0 55.4 55.6 45.5 NO. OF WIND OBSERVATION 183.9 168.2 182.8 175.9 190.1 180.7 189.6 189.6 183.4 187.6 180.3 185.2 2197.3 VECTOR WIND DIRECTION (MEAN) 108 119 114 143 276 276 265 269 269 230 114 108 244 VECTOR WIND MAGNITUDE(KNOTS) 2.0 1.5 1.8 0.7 2.4 4.1 2.9 2.8 2.7 0.5 1.3 1.6 0.7 WIND STEADINESES (MEAN %) 50.0 34.1 37.5 12.1 40.0 67.2 52.7 57.1 60.0 13.9 35.1 45.7 14.9 WIND SPEED (MEAN KNOTS) 4.0 4.4 4.8 5.8 6.0 6.1 5.5 4.9 4.5 3.6 3.7 3.5 4.7 FASTEST WIND DIRECTION 90 110 90 310 360 280 30 310 270 50 90 80 90 FASTEST WIND SPEED (KNOTS) 49 39 49 39 35 39 35 39 49 39 49 49 49 YEAR-DAY 94- 2 87- 8 3-25 87-21 87- 3 90-22 87-27 1-10 93- 7 93-28 93-25 93- 8 94 DAYS WITH SKY CLEAR (0-2)/8 15.4 14.4 14.6 14.2 19.3 28.3 29.7 29.5 28.9 23.0 17.2 14.0 248.5 DAYS WITH P.CLOUDY (3-6)/8 8.3 9.0 10.0 10.5 8.9 1.4 1.2 1.4 1.1 6.1 8.4 10.6 76.9 DAYS WITH CLOUDY (7-8)/8 7.3 4.8 6.4 5.3 2.7 0.3 0.0 0.1 0.0 1.9 4.4 6.4 39.6 DAYS WITH VISIBILITY =< 2 KM 2.7 0.7 1.3 0.8 1.6 1.4 2.5 0.7 0.5 0.1 0.5 2.1 14.9 DURATION OF SUNSHINE HOURS 178.4 195.2 212.7 239.2 287.6 349.9 339.8 342.9 308.4 265.7 209.3 167.6 3096.7 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION DEHLORAN (40796) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 32 41 N LONGITUDE 47 16 E DATA PROCESSING CENTER ELEVATION 232.0 M CLIMATOLOGICAL NORMALS FOR THE PERIOD 1987-2005 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL MEAN QFE PRESSURE IN HPA 993.5 992.0 989.1 986.6 982.7 976.6 973.2 975.3 981.1 987.8 992.0 994.1 985.3 MAX. QFE PRESSURE IN HPA 1006.3 1003.7 999.6 997.1 991.4 985.4 981.1 982.1 991.0 995.5 1002.3 1003.3 1006.3 YEAR-DAY 92- 4 2- 1 92-12 97-12 93-15 3- 2 96- 3 2-29 94-24 93-30 4-28 2-14 92- 4 MIN. QFE PRESSURE IN HPA 979.1 980.5 976.0 977.0 973.4 968.5 965.2 968.4 972.6 979.6 981.3 982.0 965.2 YEAR-DAY 96-12 3-19 96-12 3-20 1-29 97-29 95-20 95- 3 94- 2 1- 1 1-17 2-21 95-20 MEAN QNH PRESSURE IN HPA 1021.0 1019.4 1016.4 1013.8 1009.8 1003.7 1000.1 1002.3 1008.2 1015.2 1019.4 1021.6 1012.6 MAX. QNH PRESSURE IN HPA 1034.0 1031.4 1027.2 1024.6 1018.8 1012.7 1008.3 1009.3 1018.4 1023.0 1029.9 1031.0 1034.0 YEAR-DAY 92- 4 2- 1 92-12 97-12 93-15 3- 2 96- 3 2-29 94-24 93-30 4-28 2-14 92- 4 MIN. QNH PRESSURE IN HPA 1006.2 1007.6 1003.0 1004.1 1000.4 995.4 992.0 995.3 999.6 1006.7 1008.5 1009.2 992.0 YEAR-DAY 96-12 3-19 96-12 3-20 1-29 97-29 95-20 95- 3 94- 2 1- 1 1-17 2-21 95-20 MEAN QFF PRESSURE IN HPA 1020.4 1019.2 1016.2 1012.8 1008.1 1001.4 998.5 1000.2 1006.6 1014.0 1019.0 1021.7 1011.5 MAX. QFF PRESSURE IN HPA 1029.4 1031.4 1027.6 1022.1 1016.5 1011.0 1006.2 1007.4 1015.7 1021.6 1030.6 1032.1 1032.1 YEAR-DAY 3- 6 97- 7 3- 2 5- 5 4-18 3- 2 87-30 2-29 97-30 5-23 4-28 4-18 4-18 MIN. QFF PRESSURE IN HPA 1006.1 1007.6 1002.5 1002.9 999.3 993.4 992.9 993.8 999.8 1006.0 1009.6 1009.1 992.9 YEAR-DAY 96-12 3-20 3-12 3-27 4-13 97-29 5- 5 5- 7 4- 1 96- 4 4-23 2-21 5- 5 PRESSURE AT HOUR 0000 UTC. MEAN QFE PRESSURE IN HPA 992.5 991.4 988.9 985.9 982.0 976.0 973.0 974.5 980.6 987.4 991.7 993.8 984.8 MAX. QFE PRESSURE IN HPA 1000.5 999.8 997.7 993.1 988.6 983.9 978.0 980.3 988.8 992.9 1000.3 1001.6 1001.6 YEAR-DAY 3- 7 4- 9 97- 1 5- 5 3- 1 3- 2 3- 3 2-30 97-30 5-23 4-29 2-14 2-14 MIN. QFE PRESSURE IN HPA 979.1 982.2 979.0 978.6 973.7 968.9 968.3 969.6 975.5 980.5 983.1 983.1 968.3 YEAR-DAY 96-12 3-19 3-26 4-17 4-13 97-29 97-12 96- 4 5-12 96- 5 4-23 2-21 97-12 MEAN QNH PRESSURE IN HPA 1019.9 1018.8 1016.2 1013.2 1009.2 1003.0 999.9 1001.5 1007.8 1014.7 1019.1 1021.2 1012.0 MAX. QNH PRESSURE IN HPA 1028.1 1027.4 1025.2 1020.5 1015.9 1011.1 1005.1 1007.4 1016.1 1020.3 1027.9 1029.2 1029.2 YEAR-DAY 3- 7 4- 9 97- 1 5- 5 3- 1 3- 2 3- 3 2-30 97-30 5-23 4-29 2-14 2-14 MIN. QNH PRESSURE IN HPA 1006.2 1009.4 1006.1 1005.7 1000.7 995.8 995.2 996.5 1002.5 1007.6 1010.3 1010.3 995.2 YEAR-DAY 96-12 3-19 3-26 4-17 4-13 97-29 97-12 96- 4 5-12 96- 5 4-23 2-21 97-12 MEAN QFF PRESSURE IN HPA 1020.1 1018.9 1016.0 1012.2 1007.6 1001.0 997.7 999.4 1005.9 1013.4 1018.6 1021.3 1011.0 MAX. QFF PRESSURE IN HPA 1028.2 1027.9 1025.6 1020.3 1015.1 1009.5 1002.9 1005.4 1014.7 1019.9 1028.5 1030.0 1030.0 YEAR-DAY 3- 7 97- 7 3- 2 5- 5 3- 1 3- 4 3- 3 2-30 97-30 5-23 4-29 2-14 2-14 MIN. QFF PRESSURE IN HPA 1006.1 1009.4 1005.6 1004.9 999.3 993.4 993.1 994.2 1000.3 1006.1 1009.6 1010.1 993.1 YEAR-DAY 96-12 3-19 3-26 4-17 4-13 97-29 97-12 5- 8 5-12 96- 5 4-23 3- 6 97-12 PRESSURE AT HOUR 0300 UTC. MEAN QFE PRESSURE IN HPA 993.3 991.9 989.0 986.5 982.7 976.8 973.2 975.3 981.0 987.7 991.8 994.0 985.3 MAX. QFE PRESSURE IN HPA 1003.4 1001.9 998.3 995.4 990.8 984.9 979.6 980.9 989.3 995.2 1000.8 1002.3 1003.4 YEAR-DAY 92- 4 2- 1 92-12 97-13 93-15 3- 4 96- 3 99-19 94-24 91-20 4-29 2-14 92- 4 MIN. QFE PRESSURE IN HPA 979.9 980.5 977.0 979.1 974.5 969.2 967.2 969.9 973.3 980.1 981.3 982.0 967.2 YEAR-DAY 96-12 3-19 91- 6 4-23 4-13 91-19 95-21 94-10 94- 1 1- 1 1-18 2-21 95-21 MEAN QNH PRESSURE IN HPA 1020.7 1019.3 1016.3 1013.8 1009.9 1003.8 1000.2 1002.3 1008.2 1015.0 1019.2 1021.4 1012.5 MAX. QNH PRESSURE IN HPA 1031.1 1029.5 1025.8 1022.9 1018.2 1012.1 1006.7 1008.1 1016.6 1022.7 1028.4 1029.9 1031.1 YEAR-DAY 92- 4 2- 1 92-12 97-13 93-15 3- 4 96- 3 99-19 94-24 91-20 4-29 2-14 92- 4 MIN. QNH PRESSURE IN HPA 1007.0 1007.6 1004.1 1006.2 1001.5 996.1 994.0 996.8 1000.3 1007.2 1008.5 1009.2 994.0 YEAR-DAY 96-12 3-19 91- 6 4-23 4-13 91-19 95-21 94-10 94- 1 1- 1 1-18 2-21 95-21 MEAN QFF PRESSURE IN HPA 1021.1 1019.5 1016.2 1013.0 1008.5 1001.9 998.1 1000.3 1006.5 1013.9 1018.9 1021.6 1011.6 MAX. QFF PRESSURE IN HPA 1032.5 1030.3 1026.2 1023.2 1017.2 1010.6 1005.2 1006.0 1015.4 1021.7 1029.2 1030.9 1032.5 YEAR-DAY 92- 4 2- 1 92-12 97-12 93-15 3- 4 87-30 2-30 97-30 91-20 4-29 4-18 92- 4 MIN. QFF PRESSURE IN HPA 1007.1 1007.7 1003.1 1004.9 1000.0 993.5 991.9 994.9 998.4 1005.6 1007.9 1009.1 991.9 YEAR-DAY 96-12 3-19 0-24 4-23 1-29 91-19 0-10 5- 8 94- 1 1- 1 1-18 2-21 0-10 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION DEHLORAN (40796) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 32 41 N LONGITUDE 47 16 E DATA PROCESSING CENTER ELEVATION 232.0 M CLIMATOLOGICAL NORMALS FOR THE PERIOD 1987-2005 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 0600 UTC. MEAN QFE PRESSURE IN HPA 994.6 993.2 990.2 987.7 983.8 977.7 974.1 976.4 982.3 989.1 993.2 995.2 986.5 MAX. QFE PRESSURE IN HPA 1006.1 1003.7 999.6 997.1 991.4 984.9 980.9 982.1 991.0 995.5 1002.3 1003.3 1006.1 YEAR-DAY 92- 4 2- 1 92-12 97-12 93-15 3- 4 96- 3 2-30 94-24 93-30 4-28 2-14 92- 4 MIN. QFE PRESSURE IN HPA 981.2 981.1 976.5 980.7 976.1 970.4 967.8 971.2 974.6 981.1 982.2 982.8 967.8 YEAR-DAY 96-12 3-20 97-29 98-21 4-13 3-30 95-21 5- 7 94- 1 1- 1 1-18 2-21 95-21 MEAN QNH PRESSURE IN HPA 1022.0 1020.6 1017.6 1015.0 1011.0 1004.7 1001.1 1003.5 1009.5 1016.5 1020.6 1022.7 1013.7 MAX. QNH PRESSURE IN HPA 1033.8 1031.4 1027.2 1024.6 1018.8 1012.1 1008.1 1009.3 1018.4 1023.0 1029.9 1031.0 1033.8 YEAR-DAY 92- 4 2- 1 92-12 97-12 93-15 3- 4 96- 3 2-30 94-24 93-30 4-28 2-14 92- 4 MIN. QNH PRESSURE IN HPA 1008.4 1008.3 1003.6 1007.8 1003.1 997.3 994.7 998.1 1001.6 1008.3 1009.4 1010.0 994.7 YEAR-DAY 96-12 3-20 97-29 98-21 4-13 3-30 95-21 5- 7 94- 1 1- 1 1-18 2-21 95-21 MEAN QFF PRESSURE IN HPA 1021.6 1020.5 1017.4 1014.4 1009.4 1002.7 999.6 1001.4 1008.0 1015.5 1020.3 1022.9 1012.8 MAX. QFF PRESSURE IN HPA 1029.4 1031.4 1027.6 1023.6 1016.5 1010.5 1006.2 1007.3 1015.6 1021.6 1030.6 1032.1 1032.1 YEAR-DAY 3- 6 97- 7 3- 2 87-22 4-18 3- 4 87-30 2-30 97-30 5-23 4-28 4-18 4-18 MIN. QFF PRESSURE IN HPA 1008.6 1008.0 1006.2 1007.1 1001.8 995.2 994.7 996.0 1002.1 1007.8 1013.2 1009.9 994.7 YEAR-DAY 96-12 3-20 96- 7 3-27 4-13 3-30 96-15 4- 3 5-11 87- 4 87- 7 2-21 96-15 PRESSURE AT HOUR 0900 UTC. MEAN QFE PRESSURE IN HPA 994.2 992.9 989.9 987.4 983.5 977.4 973.9 976.1 981.9 988.6 992.5 994.6 986.1 MAX. QFE PRESSURE IN HPA 1006.3 1003.5 999.1 996.6 990.4 985.4 981.1 981.6 990.6 994.7 1001.8 1002.9 1006.3 YEAR-DAY 92- 4 2- 1 92-12 97-13 93-14 3- 2 96- 3 2-29 94-24 0-30 4-28 2-14 92- 4 MIN. QFE PRESSURE IN HPA 980.2 981.1 978.0 979.4 975.7 970.1 967.5 970.6 974.6 980.4 982.1 982.9 967.5 YEAR-DAY 3-28 3-20 97-29 3-20 1-29 3-30 95-20 95- 3 94- 1 1- 1 1-18 91-25 95-20 MEAN QNH PRESSURE IN HPA 1021.6 1020.3 1017.3 1014.7 1010.7 1004.5 1000.9 1003.2 1009.0 1015.9 1019.9 1022.1 1013.3 MAX. QNH PRESSURE IN HPA 1034.0 1031.2 1026.7 1024.1 1017.8 1012.7 1008.3 1008.8 1018.0 1022.2 1029.4 1030.6 1034.0 YEAR-DAY 92- 4 2- 1 92-12 97-13 93-14 3- 2 96- 3 2-29 94-24 0-30 4-28 2-14 92- 4 MIN. QNH PRESSURE IN HPA 1007.3 1008.3 1005.1 1006.5 1002.7 997.0 994.4 997.5 1001.6 1007.5 1009.3 1010.1 994.4 YEAR-DAY 3-28 3-20 97-29 3-20 1-29 3-30 95-20 95- 3 94- 1 1- 1 1-18 91-25 95-20 MEAN QFF PRESSURE IN HPA 1021.1 1020.1 1017.2 1013.7 1008.9 1002.2 999.2 1001.0 1007.4 1014.8 1019.6 1022.2 1012.3 MAX. QFF PRESSURE IN HPA 1028.5 1030.5 1026.9 1021.9 1016.1 1011.0 1005.9 1006.7 1015.7 1020.6 1029.9 1031.4 1031.4 YEAR-DAY 3- 6 97- 7 3- 2 5- 5 4-18 3- 2 96- 3 2-29 97-30 5-22 4-28 2-14 2-14 MIN. QFF PRESSURE IN HPA 1007.2 1008.0 1005.0 1005.1 1002.8 994.8 994.1 995.2 1001.4 1008.3 1011.4 1010.0 994.1 YEAR-DAY 3-28 3-20 3-12 3-20 4-13 3-30 96- 6 5- 7 96-15 96- 4 4-18 2-21 96- 6 PRESSURE AT HOUR 1200 UTC. MEAN QFE PRESSURE IN HPA 992.7 991.2 988.3 985.9 982.1 976.1 972.7 974.7 980.4 987.1 991.1 993.3 984.6 MAX. QFE PRESSURE IN HPA 1004.1 1002.0 997.6 994.6 989.2 984.5 979.6 980.6 988.8 994.5 1000.4 1001.7 1004.1 YEAR-DAY 92- 4 2- 1 92-12 97-12 93-14 3- 2 96- 3 2-29 94-23 87- 1 4-28 4-18 92- 4 MIN. QFE PRESSURE IN HPA 979.2 980.7 976.3 977.8 974.6 968.9 966.0 969.2 972.9 979.6 981.8 982.9 966.0 YEAR-DAY 3-28 3-20 3-12 3-20 1-29 97-29 95-20 95- 3 94- 2 1- 1 91- 4 91-25 95-20 MEAN QNH PRESSURE IN HPA 1020.1 1018.5 1015.6 1013.2 1009.3 1003.2 999.7 1001.7 1007.5 1014.4 1018.5 1020.7 1011.9 MAX. QNH PRESSURE IN HPA 1031.8 1029.6 1025.1 1022.1 1016.5 1011.7 1006.7 1007.8 1016.1 1022.0 1028.0 1029.3 1031.8 YEAR-DAY 92- 4 2- 1 92-12 97-12 93-14 3- 2 96- 3 2-29 94-23 87- 1 4-28 4-18 92- 4 MIN. QNH PRESSURE IN HPA 1006.3 1007.8 1003.3 1004.9 1001.6 995.8 992.8 996.1 999.9 1006.7 1009.0 1010.1 992.8 YEAR-DAY 3-28 3-20 3-12 3-20 1-29 97-29 95-20 95- 3 94- 2 1- 1 91- 4 91-25 95-20 MEAN QFF PRESSURE IN HPA 1019.5 1018.4 1015.5 1012.2 1007.5 1000.8 997.9 999.5 1005.9 1013.2 1018.2 1020.6 1010.8 MAX. QFF PRESSURE IN HPA 1027.3 1028.7 1025.1 1019.9 1014.4 1010.2 1004.5 1005.8 1012.7 1019.4 1028.5 1030.5 1030.5 YEAR-DAY 3- 6 4- 8 3- 2 5- 5 3-10 3- 2 96- 3 2-29 97-29 5-23 4-28 4-18 4-18 MIN. QFF PRESSURE IN HPA 1006.2 1007.6 1002.6 1003.4 1000.2 993.6 993.0 993.8 999.8 1006.2 1010.3 1010.1 993.0 YEAR-DAY 3-28 3-20 3-12 3-20 4-15 97-29 5- 5 5- 7 5-11 96- 4 4-18 2-21 5- 5 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION DEHLORAN (40796) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 32 41 N LONGITUDE 47 16 E DATA PROCESSING CENTER ELEVATION 232.0 M CLIMATOLOGICAL NORMALS FOR THE PERIOD 1987-2005 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 1500 UTC. MEAN QFE PRESSURE IN HPA 993.0 991.2 988.1 985.4 981.5 975.5 972.0 974.1 980.1 987.0 991.4 993.6 984.4 MAX. QFE PRESSURE IN HPA 1004.3 1001.9 996.8 994.2 989.8 984.4 980.1 980.5 988.5 993.5 1001.0 1001.7 1004.3 YEAR-DAY 92- 4 93- 7 3- 2 97-12 93-14 3- 2 87-29 2-29 94-23 87- 1 4-28 94- 6 92- 4 MIN. QFE PRESSURE IN HPA 980.6 980.8 976.0 977.0 973.4 968.5 965.2 968.4 972.6 980.5 981.3 982.7 965.2 YEAR-DAY 92-30 3-19 96-12 3-20 1-29 97-29 95-20 95- 3 94- 2 96- 4 1-17 91-31 95-20 MEAN QNH PRESSURE IN HPA 1020.5 1018.6 1015.4 1012.7 1008.7 1002.5 999.0 1001.1 1007.2 1014.3 1018.7 1021.0 1011.7 MAX. QNH PRESSURE IN HPA 1032.0 1029.5 1024.3 1021.7 1017.2 1011.6 1007.2 1007.6 1015.8 1020.9 1028.6 1029.3 1032.0 YEAR-DAY 92- 4 93- 7 3- 2 97-12 93-14 3- 2 87-29 2-29 94-23 87- 1 4-28 94- 6 92- 4 MIN. QNH PRESSURE IN HPA 1007.8 1008.0 1003.0 1004.1 1000.4 995.4 992.0 995.3 999.6 1007.6 1008.5 1009.9 992.0 YEAR-DAY 92-30 3-19 96-12 3-20 1-29 97-29 95-20 95- 3 94- 2 96- 4 1-17 91-31 95-20 MEAN QFF PRESSURE IN HPA 1020.9 1018.9 1015.3 1011.8 1007.2 1000.6 996.9 999.1 1005.6 1013.2 1018.4 1021.2 1010.8 MAX. QFF PRESSURE IN HPA 1033.3 1030.3 1024.7 1022.0 1016.4 1010.1 1005.6 1005.8 1014.3 1019.9 1029.2 1030.3 1033.3 YEAR-DAY 92- 4 93- 7 3- 2 97-12 93-14 3- 2 87-29 2-29 94-24 93-30 4-28 94- 6 92- 4 MIN. QFF PRESSURE IN HPA 1008.0 1007.8 1002.5 1002.9 998.3 993.1 989.9 993.1 997.9 1006.2 1007.9 1010.2 989.9 YEAR-DAY 3-28 3-19 3-12 3-27 1-29 91-19 95-20 95- 3 94- 2 96- 4 1-17 94- 3 95-20 PRESSURE AT HOUR 1800 UTC. MEAN QFE PRESSURE IN HPA 992.8 991.7 989.0 986.7 982.5 976.4 973.8 975.3 981.4 988.1 992.0 994.2 985.3 MAX. QFE PRESSURE IN HPA 1000.8 1000.6 997.3 994.3 988.8 985.0 980.7 982.1 988.9 994.4 1000.9 1001.1 1001.1 YEAR-DAY 3- 6 4- 8 3- 2 87- 7 3-10 3- 3 87-29 2-29 97-29 87- 1 4-28 4-18 4-18 MIN. QFE PRESSURE IN HPA 982.5 982.6 977.9 978.3 975.0 969.9 968.9 970.1 975.4 980.9 984.9 985.3 968.9 YEAR-DAY 96-11 3-19 3-12 3-20 4-12 3-30 4-10 5- 7 4- 1 96- 4 2-12 3- 5 4-10 MEAN QNH PRESSURE IN HPA 1020.2 1019.1 1016.3 1014.0 1009.7 1003.5 1000.8 1002.3 1008.5 1015.4 1019.4 1021.6 1012.6 MAX. QNH PRESSURE IN HPA 1028.4 1028.2 1024.8 1021.8 1016.1 1012.2 1007.8 1009.3 1016.2 1021.9 1028.5 1028.7 1028.7 YEAR-DAY 3- 6 4- 8 3- 2 87- 7 3-10 3- 3 87-29 2-29 97-29 87- 1 4-28 4-18 4-18 MIN. QNH PRESSURE IN HPA 1009.7 1009.8 1005.0 1005.4 1002.0 996.8 995.8 997.0 1002.4 1008.1 1012.1 1012.6 995.8 YEAR-DAY 96-11 3-19 3-12 3-20 4-12 3-30 4-10 5- 7 4- 1 96- 4 2-12 3- 5 4-10 MEAN QFF PRESSURE IN HPA 1020.5 1019.4 1016.1 1013.1 1008.1 1001.5 998.6 1000.2 1006.8 1014.2 1019.1 1021.8 1011.6 MAX. QFF PRESSURE IN HPA 1028.8 1028.8 1025.1 1021.4 1014.9 1010.5 1006.0 1007.4 1014.8 1020.5 1029.2 1030.0 1030.0 YEAR-DAY 3- 6 97- 6 3- 1 87- 7 3-10 3- 3 87-29 2-29 97-29 5-22 4-28 4-18 4-18 MIN. QFF PRESSURE IN HPA 1009.8 1009.5 1004.4 1004.2 1000.7 994.6 993.5 994.9 1000.4 1006.4 1011.3 1012.3 993.5 YEAR-DAY 96-11 96-10 3-12 3-20 4-12 4-19 4-10 5- 7 4- 1 96- 4 2-12 87-23 4-10 PRESSURE AT HOUR 2100 UTC. MEAN QFE PRESSURE IN HPA 992.7 991.7 989.1 986.5 982.5 976.2 973.5 975.1 981.2 987.9 992.0 994.0 985.2 MAX. QFE PRESSURE IN HPA 1000.8 1000.6 997.4 993.4 988.7 984.9 978.9 981.2 989.3 994.6 1000.6 1001.7 1001.7 YEAR-DAY 3- 6 4- 8 3- 1 5- 4 3-10 3- 3 96- 3 2-29 97-29 4-15 4-28 2-13 2-13 MIN. QFE PRESSURE IN HPA 981.5 983.0 979.6 979.7 974.9 970.2 969.1 970.1 975.3 980.5 984.7 984.4 969.1 YEAR-DAY 96-11 3-18 4-31 4-16 4-12 97-28 96- 5 4- 2 96-15 96- 4 4-22 3- 5 96- 5 MEAN QNH PRESSURE IN HPA 1020.2 1019.1 1016.5 1013.8 1009.7 1003.2 1000.5 1002.1 1008.4 1015.2 1019.4 1021.5 1012.5 MAX. QNH PRESSURE IN HPA 1028.4 1028.2 1024.9 1020.8 1016.0 1012.1 1006.0 1008.4 1016.6 1022.1 1028.2 1029.3 1029.3 YEAR-DAY 3- 6 4- 8 3- 1 5- 4 3-10 3- 3 96- 3 2-29 97-29 4-15 4-28 2-13 2-13 MIN. QNH PRESSURE IN HPA 1008.7 1010.2 1006.7 1006.8 1001.9 997.1 996.0 997.0 1002.3 1007.6 1011.9 1011.6 996.0 YEAR-DAY 96-11 3-18 4-31 4-16 4-12 97-28 96- 5 4- 2 96-15 96- 4 4-22 3- 5 96- 5 MEAN QFF PRESSURE IN HPA 1020.4 1019.2 1016.2 1012.9 1008.1 1001.2 998.2 999.9 1006.5 1013.9 1018.9 1021.6 1011.4 MAX. QFF PRESSURE IN HPA 1028.4 1028.6 1025.4 1020.6 1014.6 1010.5 1003.6 1006.3 1015.1 1020.7 1028.8 1030.0 1030.0 YEAR-DAY 3- 6 4- 8 3- 1 5- 4 3-10 3- 2 96- 3 2-29 97-29 5-22 4-28 2-13 2-13 MIN. QFF PRESSURE IN HPA 1008.6 1010.2 1005.8 1006.0 1000.5 994.5 993.6 994.6 1000.3 1006.0 1011.1 1011.5 993.6 YEAR-DAY 96-11 3-19 4-31 4-16 4-12 97-28 96- 5 5- 7 96-15 96- 4 4-22 3- 5 96- 5 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION DEHLORAN (40796) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) FORM 1 LATITUDE 32 41 N LONGITUDE 47 16 E DATA PROCESSING CENTER ELEVATION 232.0 M AVERAGE OF DRY BULB TEMPERATURE IN C. YEAR JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL 1987 14.5 17.8 17.2 25.9 34.8 38.6 40.4 39.1 35.6 26.4 21.0 14.3 27.1 1988 ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** ****** 1989 ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** ****** 1990 ***** ***** ***** ***** ***** 38.7 41.2 39.4 36.5 29.7 22.9 16.6 ****** 1991 12.1 12.9 17.9 27.9 31.3 38.8 40.0 38.6 35.6 28.6 22.0 13.4 26.6 1992 9.1 11.4 14.6 23.3 30.1 37.2 39.3 39.0 35.7 29.0 19.8 12.3 25.1 1993 10.7 13.1 17.9 24.1 31.1 38.2 41.6 40.2 36.5 29.3 18.8 16.9 26.5 1994 15.2 14.8 20.1 28.3 33.2 38.2 39.2 39.0 36.0 29.2 19.6 11.2 27.0 1995 13.6 15.2 19.4 24.5 33.6 38.3 39.5 40.3 34.9 28.4 21.1 13.6 26.9 1996 12.7 15.2 16.6 23.5 33.3 36.9 40.8 39.6 34.6 27.0 20.2 16.4 26.4 1997 12.9 11.7 15.2 23.0 32.6 37.7 38.2 36.6 33.9 27.9 19.4 13.9 25.3 1998 10.8 14.4 17.5 26.4 33.4 40.8 41.4 42.3 37.2 30.4 24.2 19.8 28.2 1999 14.4 16.2 19.5 27.7 35.6 39.6 40.9 42.0 36.8 31.5 20.8 15.5 28.4 2000 12.2 14.5 19.6 29.5 34.6 38.7 42.5 41.9 35.2 28.1 19.5 14.2 27.5 2001 12.8 15.1 21.5 27.9 34.0 38.9 40.8 41.6 36.5 30.3 20.4 16.6 28.0 2002 11.8 15.8 21.1 24.2 31.5 36.9 39.7 38.2 35.2 30.0 19.9 13.0 26.4 2003 13.0 14.4 18.0 25.7 32.2 37.3 38.4 39.8 34.6 29.3 19.3 13.7 26.3 2004 13.8 14.4 21.7 23.6 31.0 37.5 39.6 38.1 35.1 30.1 19.8 11.4 26.3 2005 11.3 13.0 18.1 26.1 32.1 37.2 40.1 38.6 34.0 28.3 19.0 16.3 26.2 MEAN 12.6 14.4 18.5 25.7 32.8 38.2 40.2 39.7 35.5 29.0 20.5 14.6 26.8 =============================================================================================== TEHRAN 2006,MAY M.(S & A) STATION DEHLORAN (40796) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) FORM 2 LATITUDE 32 41 N LONGITUDE 47 16 E DATA PROCESSING CENTER ELEVATION 232.0 M AVERAGE OF MINIMUM TEMPERATURE IN C. YEAR JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL 1987 7.9 11.6 12.1 18.0 26.9 28.7 31.1 30.1 27.7 21.1 14.3 9.6 19.9 1988 ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** ****** 1989 ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** ****** 1990 ***** ***** ***** ***** ***** 28.2 31.6 28.8 25.8 21.0 15.6 10.3 ****** 1991 7.9 7.9 11.7 19.3 23.0 28.4 29.9 29.8 26.4 21.0 14.4 7.7 18.9 1992 4.1 6.1 8.4 14.9 22.0 28.0 29.0 30.1 26.3 20.1 13.5 8.0 17.5 1993 5.9 7.7 11.2 16.7 23.8 28.3 31.5 30.9 27.0 21.6 13.2 11.1 19.1 1994 10.2 8.6 13.1 20.3 24.3 29.3 29.8 29.0 27.5 22.4 14.9 6.9 19.7 1995 8.4 9.7 12.6 17.0 25.3 29.4 30.5 30.1 25.5 19.7 13.6 8.5 19.2 1996 9.1 11.0 11.7 17.3 26.3 28.8 33.5 31.6 27.5 20.4 14.9 12.0 20.3 1997 8.8 6.3 10.4 17.1 25.2 30.3 30.5 28.7 26.3 22.7 15.2 9.8 19.3 1998 6.6 9.1 11.8 18.2 24.4 30.6 32.3 33.7 28.6 22.2 16.7 13.6 20.7 1999 10.1 10.6 13.5 19.2 26.6 30.2 32.4 32.8 27.5 24.0 14.4 10.3 21.0 2000 7.3 8.1 11.8 21.5 25.7 28.6 33.8 32.2 25.6 19.7 12.8 9.6 19.7 2001 7.6 8.9 14.6 19.8 25.0 29.3 31.6 32.6 27.6 22.8 13.5 12.5 20.5 2002 7.2 9.3 13.8 17.2 23.7 27.7 30.3 30.1 27.0 23.7 14.4 9.4 19.5 2003 8.6 9.7 12.6 20.1 25.7 30.1 31.3 31.8 27.1 23.3 14.5 9.8 20.4 2004 10.4 9.6 15.6 18.0 24.7 30.2 32.2 30.7 27.9 23.8 15.5 7.5 20.5 2005 7.4 8.8 12.7 19.9 25.8 29.8 32.7 31.5 26.4 22.1 14.3 11.6 20.2 MEAN 8.0 8.9 12.4 18.4 24.9 29.2 31.4 30.8 26.9 21.9 14.4 9.9 19.8 =============================================================================================== TEHRAN 2006,MAY M.(S & A) STATION DEHLORAN (40796) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) FORM 3 LATITUDE 32 41 N LONGITUDE 47 16 E DATA PROCESSING CENTER ELEVATION 232.0 M AVERAGE OF MAXIMUM TEMPERATURE IN C. YEAR JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL 1987 19.0 22.3 21.2 30.5 39.5 43.8 45.9 45.1 41.2 30.7 26.5 18.3 32.0 1988 ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** ****** 1989 ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** ****** 1990 ***** ***** ***** ***** ***** 44.1 46.7 45.7 42.6 34.8 27.9 21.2 ****** 1991 15.6 16.8 22.0 33.0 36.1 43.7 46.2 44.6 41.3 33.3 26.3 17.1 31.3 1992 12.6 15.0 18.6 27.5 34.3 42.0 45.1 44.3 40.5 34.2 24.3 15.5 29.5 1993 14.4 16.8 21.8 28.6 34.7 42.6 46.2 44.9 41.9 34.1 22.9 21.4 30.9 1994 18.7 18.8 24.1 32.8 37.6 42.9 44.8 45.0 40.9 33.5 23.2 15.0 31.4 1995 17.8 19.3 23.6 28.6 37.5 42.5 44.8 46.0 40.0 33.8 26.0 18.3 31.5 1996 16.7 19.7 20.9 28.9 39.1 43.1 47.0 46.5 41.6 33.3 26.2 21.6 32.0 1997 17.9 17.4 19.9 28.3 37.6 43.2 45.3 44.8 40.9 33.5 23.6 17.3 30.8 1998 14.0 18.4 21.4 31.0 37.7 45.8 46.4 47.3 42.4 35.7 29.1 24.6 32.8 1999 18.1 20.1 23.3 32.1 39.9 44.2 46.1 47.1 41.9 36.4 25.3 19.7 32.8 2000 15.7 18.6 24.2 34.1 39.2 43.7 47.3 47.1 40.7 32.9 24.0 17.7 32.1 2001 17.0 19.4 26.2 33.5 38.8 44.1 46.0 47.1 41.8 35.2 25.3 20.1 32.9 2002 15.3 19.9 25.5 28.2 37.6 43.3 46.2 45.5 42.7 37.2 26.4 18.0 32.2 2003 18.7 20.1 23.9 31.8 38.4 43.5 45.5 47.0 41.7 35.8 24.8 18.3 32.5 2004 17.9 19.5 28.0 29.1 36.8 43.8 46.4 45.4 42.4 36.6 24.9 16.2 32.3 2005 15.8 17.8 23.2 32.0 37.6 43.7 47.2 45.5 41.4 35.0 25.2 22.5 32.2 MEAN 16.6 18.8 23.0 30.6 37.6 43.5 46.1 45.8 41.5 34.5 25.4 19.0 31.9 =============================================================================================== TEHRAN 2006,MAY M.(S & A) STATION DEHLORAN (40796) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) FORM 4 LATITUDE 32 41 N LONGITUDE 47 16 E DATA PROCESSING CENTER ELEVATION 232.0 M DIFFERENCE BETWEEN AVERAGE MAXIMUM AND MINIMUM TEMPERATURE IN C. YEAR JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL 1987 11.1 10.7 9.1 12.5 12.6 15.1 14.8 15.0 13.5 9.6 12.2 8.7 12.1 1988 ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** ****** 1989 ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** ****** 1990 ***** ***** ***** ***** ***** 15.9 15.1 16.9 16.8 13.8 12.3 10.9 ****** 1991 7.7 8.9 10.3 13.7 13.1 15.3 16.3 14.8 14.9 12.3 11.9 9.4 12.4 1992 8.5 8.9 10.2 12.6 12.3 14.0 16.1 14.2 14.2 14.1 10.8 7.5 12.0 1993 8.5 9.1 10.6 11.9 10.9 14.3 14.7 14.0 14.9 12.5 9.7 10.3 11.8 1994 8.5 10.2 11.0 12.5 13.3 13.6 15.0 16.0 13.4 11.1 8.3 8.1 11.7 1995 9.4 9.6 11.0 11.6 12.2 13.1 14.3 15.9 14.5 14.1 12.4 9.8 12.3 1996 7.6 8.7 9.2 11.6 12.8 14.3 13.5 14.9 14.1 12.9 11.3 9.6 11.7 1997 9.1 11.1 9.5 11.2 12.4 12.9 14.8 16.1 14.6 10.8 8.4 7.5 11.5 1998 7.4 9.3 9.6 12.8 13.3 15.2 14.1 13.6 13.8 13.5 12.4 11.0 12.1 1999 8.0 9.5 9.8 12.9 13.3 14.0 13.7 14.3 14.4 12.4 10.9 9.4 11.8 2000 8.4 10.5 12.4 12.6 13.5 15.1 13.5 14.9 15.1 13.2 11.2 8.1 12.4 2001 9.4 10.5 11.6 13.7 13.8 14.8 14.4 14.5 14.2 12.4 11.8 7.6 12.4 2002 8.1 10.6 11.7 11.0 13.9 15.6 15.9 15.4 15.7 13.5 12.0 8.6 12.7 2003 10.1 10.4 11.3 11.7 12.7 13.4 14.2 15.2 14.6 12.5 10.3 8.5 12.1 2004 7.5 9.9 12.4 11.1 12.1 13.6 14.2 14.7 14.5 12.8 9.4 8.7 11.8 2005 8.4 9.0 10.5 12.1 11.8 13.9 14.5 14.0 15.0 12.9 10.9 10.9 12.0 MEAN 8.6 9.9 10.6 12.2 12.7 14.3 14.7 15.0 14.6 12.6 11.0 9.1 12.1 =============================================================================================== TEHRAN 2006,MAY M.(S & A) STATION DEHLORAN (40796) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) FORM 5 LATITUDE 32 41 N LONGITUDE 47 16 E DATA PROCESSING CENTER ELEVATION 232.0 M AVERAGE OF MEAN DAILY TEMPERATURE IN C. YEAR JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL 1987 13.5 16.9 16.6 24.2 33.2 36.3 38.5 37.6 34.5 25.9 20.4 14.0 26.0 1988 ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** ****** 1989 ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** ****** 1990 ***** ***** ***** ***** ***** 36.2 39.1 37.2 34.2 27.9 21.8 15.7 ****** 1991 11.8 12.3 16.9 26.1 29.6 36.1 38.0 37.2 33.9 27.2 20.3 12.4 25.1 1992 8.4 10.6 13.5 21.2 28.2 35.0 37.1 37.2 33.4 27.1 18.9 11.7 23.5 1993 10.1 12.2 16.5 22.7 29.2 35.5 38.9 37.9 34.4 27.9 18.0 16.2 25.0 1994 14.5 13.7 18.6 26.6 30.9 36.1 37.3 37.0 34.2 27.9 19.0 10.9 25.6 1995 13.1 14.5 18.1 22.8 31.4 35.9 37.6 38.0 32.8 26.7 19.8 13.4 25.3 1996 12.9 15.3 16.3 23.1 32.7 36.0 40.3 39.1 34.5 26.9 20.6 16.8 26.2 1997 13.4 11.9 15.1 22.7 31.4 36.7 37.9 36.7 33.6 28.1 19.4 13.5 25.0 1998 10.3 13.8 16.6 24.6 31.0 38.2 39.3 40.5 35.5 28.9 22.9 19.1 26.7 1999 14.1 15.4 18.4 25.6 33.3 37.2 39.2 40.0 34.7 30.2 19.8 15.0 26.9 2000 11.5 13.4 18.0 27.8 32.4 36.2 40.5 39.6 33.1 26.3 18.4 13.6 25.9 2001 12.3 14.2 20.4 26.7 31.9 36.7 38.8 39.9 34.7 29.0 19.4 16.3 26.7 2002 11.3 14.6 19.7 22.7 30.6 35.5 38.3 37.8 34.9 30.4 20.4 13.7 25.8 2003 13.6 14.9 18.2 25.9 32.0 36.8 38.4 39.4 34.4 29.5 19.7 14.0 26.4 2004 14.1 14.5 21.8 23.5 30.7 37.0 39.3 38.1 35.2 30.2 20.2 11.8 26.4 2005 11.6 13.3 17.9 25.9 31.7 36.8 39.9 38.5 33.9 28.6 19.7 17.0 26.2 MEAN 12.3 13.8 17.7 24.5 31.3 36.4 38.7 38.3 34.2 28.2 19.9 14.4 25.8 SD 1.70 1.57 2.00 1.90 1.41 0.76 0.99 1.18 0.72 1.40 1.17 2.19 1.42 =============================================================================================== TEHRAN 2006,MAY M.(S & A) STATION DEHLORAN (40796) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) FORM 6 LATITUDE 32 41 N LONGITUDE 47 16 E DATA PROCESSING CENTER ELEVATION 232.0 M TEMPERATURE RECORDS LOWEST IN C. YEAR JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL 1987 3.0 6.0 5.2 11.6 23.2 22.8 25.6 22.7 23.6 13.2 9.0 1.8 1.8 DAY 1 11 21 5 14 21 30 20 30 28 29 29 1988 ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** 1989 ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** 1990 ***** ***** ***** ***** ***** 23.8 27.0 25.8 21.0 16.4 10.0 2.0 ****** DAY ** ** ** ** ** 21 3 9 23 30 13 26 1991 1.0 1.0 4.0 12.0 17.5 20.4 24.5 26.0 23.0 16.5 10.0 1.4 1.0 DAY 7 10 11 7 4 13 31 30 4 1 27 19 1992 -0.4 0.0 2.5 8.6 18.0 22.0 24.0 26.2 18.0 16.6 3.0 1.5 -0.4 DAY 4 12 1 1 4 6 13 26 29 28 28 27 1993 1.5 0.0 5.4 13.0 17.2 24.0 27.5 28.0 22.5 18.0 1.8 7.0 0.0 DAY 14 16 13 3 1 22 5 16 30 28 14 16 1994 6.5 3.0 7.0 14.0 17.5 24.0 27.5 25.0 24.5 17.5 8.5 1.8 1.8 DAY 18 4 16 3 7 19 19 3 23 23 9 8 1995 4.0 6.5 8.2 12.0 17.2 26.0 27.2 27.6 20.4 15.0 3.0 5.2 3.0 DAY 23 9 28 6 9 6 6 24 22 5 27 17 1996 5.0 3.8 8.0 11.8 21.6 23.2 28.8 28.0 21.4 12.4 11.6 8.0 3.8 DAY 21 6 5 15 12 7 7 25 23 28 13 16 1997 1.2 -0.2 2.6 7.2 16.6 21.8 27.4 26.0 21.2 16.8 11.8 6.6 -0.2 DAY 30 6 8 12 6 3 18 30 14 25 23 27 1998 1.4 1.4 6.4 11.6 19.2 25.6 28.0 28.4 25.0 17.8 14.0 9.8 1.4 DAY 13 16 21 6 2 14 9 23 22 31 26 4 1999 5.4 5.2 9.2 13.8 20.0 26.6 28.8 28.8 22.8 17.0 4.2 4.8 4.2 DAY 22 22 18 9 2 30 5 1 19 14 29 1 2000 2.8 3.6 5.4 12.8 18.6 24.8 30.2 22.8 22.2 15.4 8.0 5.2 2.8 DAY 18 8 10 11 11 6 4 31 2 23 22 28 2001 2.0 4.2 11.2 14.4 19.2 25.2 27.8 29.6 23.6 17.0 4.6 5.8 2.0 DAY 27 22 26 13 4 9 6 19 15 31 20 23 2002 3.0 4.8 8.2 11.0 18.6 19.8 24.6 27.0 24.0 18.0 10.0 2.0 2.0 DAY 24 1 1 4 5 4 12 24 20 25 29 14 2003 4.4 5.0 4.6 12.6 18.2 26.8 28.4 29.0 22.2 12.4 9.0 5.0 4.4 DAY 17 26 1 2 1 3 28 1 30 31 17 21 2004 6.4 1.4 7.8 9.8 20.0 24.2 28.8 26.6 23.0 16.4 5.0 -0.4 -0.4 DAY 30 24 17 6 14 3 1 20 13 23 29 18 2005 3.8 2.2 6.0 11.6 15.0 24.8 27.6 27.2 21.4 12.2 11.0 4.8 2.2 DAY 12 12 25 6 6 7 7 30 20 23 15 27 1987-2005 -0.4 -0.2 2.5 7.2 15.0 19.8 24.0 22.7 18.0 12.2 1.8 -0.4 -0.4 YEAR-DAY 92- 4 97- 6 92- 1 97-12 5- 6 2- 4 92-13 87-20 92-29 5-23 93-14 4-18 92 =============================================================================================== TEHRAN 2006,MAY M.(S & A) STATION DEHLORAN (40796) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) FORM 7 LATITUDE 32 41 N LONGITUDE 47 16 E DATA PROCESSING CENTER ELEVATION 232.0 M