STATION JASK (40893) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 25 38 N LONGITUDE 57 46 E DATA PROCESSING CENTER ELEVATION 5.2 M MEANS AND EXTREMES FOR THE YEAR 1968 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AIR TEMPERATURE (C) ***** ***** ***** ***** ***** ***** ***** 32.6 30.1 28.8 25.9 23.1 ***** MINIMUN AIR TEMPERATURE (C) 15.3 15.1 18.5 22.0 25.2 27.6 29.2 29.5 26.6 23.8 20.0 17.9 22.6 DAYS WITH MINIMUM TEMP. >=21 0 0 6 23 31 30 31 31 30 31 10 3 226 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) 12.0 10.0 13.0 20.0 21.0 24.0 24.0 26.0 24.0 21.0 17.0 11.0 10.0 DAY 1 7 5 5 1 5 6 17 21 19 20 31 MAXIMUM AIR TEMPERATURE (C) 23.9 21.8 26.9 30.5 33.4 34.7 36.0 35.5 32.1 31.5 28.9 25.5 30.1 DAYS WITH MAXIMUM TEMP. >=30 0 0 1 18 31 30 31 31 30 29 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) 26.0 24.0 31.0 36.0 36.0 42.0 41.0 39.0 36.0 35.0 31.0 28.0 42.0 DAY 5 16 18 20 16 12 15 7 27 4 2 3 DIF. BETWEEN (MAX.-MIN.) (C) 8.6 6.7 8.4 8.5 8.2 7.1 6.8 6.0 5.5 7.7 8.9 7.6 7.5 MEAN DAILY TEMP. (MDT) (C) 19.6 18.5 22.7 26.2 29.3 31.1 32.6 32.5 29.3 27.6 24.4 21.7 26.3 COOLING DEG. DAYS(BASE 21 0C) 2.0 0.0 60.0 156.5 257.0 304.0 359.0 357.0 250.5 206.0 103.0 32.5 2087.5 HEATING DEG. DAYS(BASE 18 0C) 2.5 18.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 1.0 21.5 DEWPOINT (MEAN C) ***** ***** ***** ***** ***** ***** ***** 25.5 23.8 20.9 17.7 14.3 ***** MIXING RATIO (G/KG) ****** ****** ****** ****** ****** ****** ****** 21.26 18.94 15.99 13.16 10.62 ****** VAPOUR PRESSURE (HPA) ****** ****** ****** ****** ****** ****** ****** 32.99 29.69 25.31 21.01 17.03 ****** SATURATION DEF. (HPA) ****** ****** ****** ****** ****** ****** ****** 16.55 13.17 14.73 12.74 11.58 ****** RELATIVE HUMIDITY (MEAN %) *** *** *** *** *** *** *** 68 70 64 63 60 *** RELATIVE HUMIDITY (MAX. %) 71 72 67 68 70 74 75 77 80 76 76 73 73 RELATIVE HUMIDITY (MIN. %) 55 59 52 53 54 60 59 57 61 53 50 49 55 RELATIVE HUMIDITY (MEAN% 03UTC) 70 69 64 65 65 72 72 74 78 68 70 69 70 RELATIVE HUMIDITY (MEAN% 09UTC) *** *** *** *** *** *** *** 66 65 61 56 55 *** RELATIVE HUMIDITY (MEAN% 15UTC) 56 61 55 56 59 61 63 72 73 69 70 63 63 RH=0 => RELATIVE HUMIDITY < 0.5% AMOUNT OF PRECIPITATION MM. 13.0 104.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 201.0 318.0 DAYS WITH PRECIPITATION >=10 1 2 0 0 0 0 0 0 0 0 0 2 5 DAYS WITH PRECIPITATION >= 5 1 3 0 0 0 0 0 0 0 0 0 3 7 DAYS WITH PRECIPITATION >= 1 2 4 0 0 0 0 0 0 0 0 0 3 9 DAYS WITH PRECIPITATION 2 4 0 0 0 0 0 0 0 0 0 3 9 GREATEST DAILY PRECIPITATION 11.0 49.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 180.0 180.0 DAY 17 2 ** ** ** ** ** ** ** ** ** 9 DAY WITH THUNDER STORM 0 1 0 2 0 0 0 1 0 0 1 2 7 DAYS WITH SNOW OR SLEET 0 0 0 0 0 0 0 0 0 0 0 0 0 DAYS WITH DUST 7 2 12 6 7 6 3 8 2 13 1 2 69 WIND DIRECTION (PREVAILING) *** *** *** *** *** *** *** 270 180 270 270 270 *** PREVAILING WIND SPEED(KNOTS) **** **** **** **** **** **** **** 6.3 5.8 5.7 3.9 2.2 **** PREVAILING WIND PERCENT ***** ***** ***** ***** ***** ***** ***** 32.8 46.3 37.7 39.3 23.2 ***** CALMS PERCENT OF WIND ***** ***** ***** ***** ***** ***** ***** 7.2 3.4 13.6 14.0 9.0 ***** NO. OF WIND OBSERVATION 62 58 62 60 62 60 62 125 149 154 150 155 1159 VECTOR WIND DIRECTION (MEAN) *** *** *** *** *** *** *** 244 160 228 249 154 *** VECTOR WIND MAGNITUDE(KNOTS) **** **** **** **** **** **** **** 2.0 3.4 1.7 1.5 0.9 **** WIND STEADINESES (MEAN %) ***** ***** ***** ***** ***** ***** ***** 38.5 64.2 42.5 62.5 30.0 ***** WIND SPEED (MEAN KNOTS) **** **** **** **** **** **** **** 5.2 5.3 4.0 2.4 3.0 **** FASTEST WIND DIRECTION *** *** *** *** *** *** *** 310 180 90 270 130 *** FASTEST WIND SPEED (KNOTS) *** *** *** *** *** *** *** 18 18 18 10 20 *** DAY ** ** ** ** ** ** ** 12 17 12 3 8 DAYS WITH SKY CLEAR (0-2)/8 26 18 24 21 31 29 27 31 26 31 27 25 316 DAYS WITH P.CLOUDY (3-6)/8 4 5 5 8 0 1 2 0 4 0 3 6 38 DAYS WITH CLOUDY (7-8)/8 1 6 2 1 0 0 0 0 0 0 0 0 10 DAYS WITH VISIBILITY =< 2 KM 19 19 24 28 31 30 9 8 1 3 0 0 172 DURATION OF SUNSHINE HOURS ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION JASK (40893) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 25 38 N LONGITUDE 57 46 E DATA PROCESSING CENTER ELEVATION 5.2 M MEANS AND EXTREMES FOR THE YEAR 1968 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL MEAN QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** 998.7 1005.3 1011.2 1016.1 1015.9 ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** 1008.2 1011.0 1018.1 1021.4 1022.4 ****** DAY-HOUR **-** **-** **-** **-** **-** **-** **-** 13- 3 21- 6 21- 6 16- 6 17- 6 MIN. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** 993.8 1000.1 1002.4 1011.1 1010.2 ****** DAY-HOUR **-** **-** **-** **-** **-** **-** **-** 7-12 5-12 3-15 1-12 28-12 MEAN QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** 999.0 1005.6 1011.5 1016.4 1016.3 ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** 1008.5 1011.3 1018.4 1021.7 1022.7 ****** DAY-HOUR **-** **-** **-** **-** **-** **-** **-** 13- 3 21- 6 21- 6 16- 6 17- 6 MIN. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** 994.1 1000.4 1002.7 1011.4 1010.5 ****** DAY-HOUR **-** **-** **-** **-** **-** **-** **-** 7-12 5-12 3-15 1-12 28-12 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 1016.5 1016.8 1012.8 1010.3 1006.2 1000.7 998.1 999.0 1005.7 1011.8 1016.7 1016.2 1009.2 MAX. QFE PRESSURE IN HPA 1021.0 1023.3 1018.2 1014.4 1010.8 1007.1 1002.6 1008.2 1009.8 1018.1 1020.4 1020.9 1023.3 DAY 20 7 28 4 2 1 26 13 21 23 29 17 MIN. QFE PRESSURE IN HPA 1012.5 1008.5 1003.0 1004.7 1001.0 996.4 993.3 995.7 1003.2 1004.3 1012.8 1010.9 993.3 DAY 29 15 19 24 30 29 10 11 7 3 3 9 MEAN QNH PRESSURE IN HPA 1016.8 1017.1 1013.1 1010.6 1006.5 1001.0 998.4 999.3 1006.1 1012.2 1017.1 1016.6 1009.6 MAX. QNH PRESSURE IN HPA 1021.3 1023.6 1018.5 1014.7 1011.1 1007.4 1002.9 1008.5 1010.1 1018.4 1020.7 1021.2 1023.6 DAY 20 7 28 4 2 1 26 13 21 23 29 17 MIN. QNH PRESSURE IN HPA 1012.8 1008.8 1003.3 1005.0 1001.3 996.7 993.6 996.0 1003.5 1004.6 1013.1 1011.2 993.6 DAY 29 15 19 24 30 29 10 11 7 3 3 9 MEAN QFF PRESSURE IN HPA 1017.0 1017.4 1013.4 1010.9 1006.8 1001.3 998.6 1000.6 1006.4 1012.4 1017.3 1016.8 1009.9 MAX. QFF PRESSURE IN HPA 1021.6 1023.9 1018.8 1015.0 1011.4 1007.7 1003.2 1008.8 1010.4 1018.7 1021.0 1021.5 1023.9 DAY 20 7 28 4 2 1 26 13 21 23 29 17 MIN. QFF PRESSURE IN HPA 1013.1 1009.1 1003.6 1005.3 1001.6 997.0 993.9 996.5 1003.8 1004.9 1013.4 1011.5 993.9 DAY 29 15 19 24 30 29 10 12 7 3 3 9 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION JASK (40893) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 25 38 N LONGITUDE 57 46 E DATA PROCESSING CENTER ELEVATION 5.2 M MEANS AND EXTREMES FOR THE YEAR 1968 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 0600 UTC. MEAN QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** 1000.9 1006.9 1012.8 1017.7 1017.8 ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** 1006.7 1011.0 1018.1 1021.4 1022.4 ****** DAY ** ** ** ** ** ** ** 28 21 21 16 17 MIN. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** 996.2 1004.1 1005.6 1013.7 1013.0 ****** DAY ** ** ** ** ** ** ** 11 7 3 1 30 MEAN QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** 1001.2 1007.3 1013.1 1018.0 1018.1 ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** 1007.0 1011.3 1018.4 1021.7 1022.7 ****** DAY ** ** ** ** ** ** ** 28 21 21 16 17 MIN. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** 996.5 1004.4 1005.9 1014.0 1013.3 ****** DAY ** ** ** ** ** ** ** 11 7 3 1 30 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 ****** ****** ****** ****** ****** ****** ****** 998.9 1005.6 1011.2 1015.7 1015.5 ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** 1006.0 1009.7 1016.0 1019.6 1020.1 ****** DAY ** ** ** ** ** ** ** 28 21 21 15 17 MIN. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** 994.8 1002.5 1004.2 1011.9 1010.5 ****** DAY ** ** ** ** ** ** ** 11 7 3 1 9 MEAN QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** 999.2 1005.9 1011.5 1016.0 1015.8 ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** 1006.3 1010.0 1016.3 1019.9 1020.4 ****** DAY ** ** ** ** ** ** ** 28 21 21 15 17 MIN. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** 995.1 1002.8 1004.5 1012.2 1010.8 ****** DAY ** ** ** ** ** ** ** 11 7 3 1 9 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 ****** ****** ****** ****** ****** ****** ****** 997.1 1004.1 1009.9 1014.8 1014.7 ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** 1004.2 1009.8 1015.0 1018.9 1019.0 ****** DAY ** ** ** ** ** ** ** 28 16 21 15 17 MIN. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** 993.8 1000.1 1002.7 1011.1 1010.2 ****** DAY ** ** ** ** ** ** ** 7 5 3 1 28 MEAN QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** 997.4 1004.4 1010.2 1015.1 1015.0 ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** 1004.5 1010.1 1015.3 1019.2 1019.3 ****** DAY ** ** ** ** ** ** ** 28 16 21 15 17 MIN. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** 994.1 1000.4 1003.0 1011.4 1010.5 ****** DAY ** ** ** ** ** ** ** 7 5 3 1 28 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION JASK (40893) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 25 38 N LONGITUDE 57 46 E DATA PROCESSING CENTER ELEVATION 5.2 M MEANS AND EXTREMES FOR THE YEAR 1968 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 1500 UTC. MEAN QFE PRESSURE IN HPA 1014.4 1015.7 1010.8 1008.8 1004.7 998.4 996.4 998.3 1004.1 1010.2 1015.7 1015.6 1007.8 MAX. QFE PRESSURE IN HPA 1018.1 1021.2 1016.8 1012.9 1009.4 1004.8 1000.5 1004.1 1008.8 1015.1 1020.2 1020.8 1021.2 DAY 20 7 2 4 1 1 20 28 20 21 15 17 MIN. QFE PRESSURE IN HPA 1009.8 1011.3 1001.6 1002.7 999.9 994.8 990.2 994.3 1000.5 1002.4 1011.6 1010.8 990.2 DAY 28 2 19 24 30 22 3 11 7 3 1 28 MEAN QNH PRESSURE IN HPA 1014.8 1016.0 1011.2 1009.1 1005.0 998.8 996.7 998.6 1004.5 1010.5 1016.0 1016.0 1008.1 MAX. QNH PRESSURE IN HPA 1018.4 1021.5 1017.1 1013.2 1009.7 1005.1 1000.8 1004.4 1009.1 1015.4 1020.5 1021.1 1021.5 DAY 20 7 2 4 1 1 20 28 20 21 15 17 MIN. QNH PRESSURE IN HPA 1010.1 1011.6 1001.9 1003.0 1000.2 995.1 990.5 994.6 1000.8 1002.7 1011.9 1011.1 990.5 DAY 28 2 19 24 30 22 3 11 7 3 1 28 MEAN QFF PRESSURE IN HPA 1015.0 1016.3 1011.4 1009.4 1005.3 999.0 996.9 998.9 1004.8 1010.8 1016.3 1016.2 1008.4 MAX. QFF PRESSURE IN HPA 1018.7 1021.8 1017.4 1013.5 1010.0 1005.4 1001.1 1004.7 1009.4 1015.7 1020.8 1021.4 1021.8 DAY 20 7 4 4 1 1 20 28 20 21 15 17 MIN. QFF PRESSURE IN HPA 1010.4 1011.9 1002.2 1003.3 1000.5 995.4 990.8 994.9 1001.1 1003.0 1012.2 1011.4 990.8 DAY 28 12 19 24 30 22 3 11 7 3 1 28 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 JASK (40893) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 25 38 N LONGITUDE 57 46 E DATA PROCESSING CENTER ELEVATION 5.2 M MEANS AND EXTREMES FOR THE YEAR 1969 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AIR TEMPERATURE (C) 20.3 21.0 25.6 27.9 30.9 33.3 32.7 32.4 31.9 29.7 25.8 23.2 27.9 MINIMUN AIR TEMPERATURE (C) 16.1 14.9 20.0 22.9 25.6 28.0 28.8 28.8 26.0 23.7 19.1 16.4 22.5 DAYS WITH MINIMUM TEMP. >=21 0 1 13 29 31 29 31 31 30 31 12 0 238 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) 11.0 11.0 13.0 20.0 22.0 18.0 24.0 25.0 22.0 21.0 14.0 13.0 11.0 DAY 13 5 5 23 3 15 27 5 18 16 25 25 MAXIMUM AIR TEMPERATURE (C) 22.5 23.5 28.0 30.6 33.3 35.9 34.4 34.4 34.8 32.3 28.6 26.0 30.4 DAYS WITH MAXIMUM TEMP. >=30 0 0 4 22 29 30 31 31 30 31 10 0 218 DAYS WITH MAXIMUM TEMP. <= 0 0 0 0 0 0 0 0 0 0 0 0 0 0 TEMPERATURE RECORDS HIGHEST(C) 25.0 27.0 31.0 36.0 40.0 40.0 43.0 40.0 40.0 39.0 32.0 28.0 43.0 DAY 18 11 14 4 19 7 15 2 8 23 3 5 DIF. BETWEEN (MAX.-MIN.) (C) 6.4 8.6 8.0 7.7 7.7 7.9 5.6 5.6 8.8 8.6 9.5 9.6 7.9 MEAN DAILY TEMP. (MDT) (C) 19.3 19.2 24.0 26.8 29.5 31.9 31.6 31.6 30.4 28.0 23.9 21.2 26.4 COOLING DEG. DAYS(BASE 21 0C) 4.0 8.5 95.0 173.0 262.5 328.0 329.5 328.0 282.5 217.0 87.0 16.0 2131.0 HEATING DEG. DAYS(BASE 18 0C) 10.5 6.5 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 17.0 DEWPOINT (MEAN C) 12.6 10.8 18.5 18.5 22.6 23.8 26.5 25.7 21.0 23.4 13.6 14.5 19.3 MIXING RATIO (G/KG) 9.58 8.57 13.70 13.67 17.95 19.50 22.50 21.41 16.92 18.34 10.38 10.42 15.24 VAPOUR PRESSURE (HPA) 15.38 13.78 21.76 21.68 28.13 30.33 34.79 33.24 26.53 28.92 16.60 16.75 23.99 SATURATION DEF. (HPA) 8.69 11.39 11.28 16.19 16.93 21.25 15.00 15.78 21.28 12.92 17.20 12.06 15.00 RELATIVE HUMIDITY (MEAN %) 64 55 67 59 64 61 71 69 57 70 49 59 62 RELATIVE HUMIDITY (MAX. %) 77 69 80 72 77 72 81 78 71 83 63 72 75 RELATIVE HUMIDITY (MIN. %) 53 42 55 48 51 48 63 60 45 60 36 47 51 RELATIVE HUMIDITY (MEAN% 03UTC) 73 64 75 67 69 65 78 76 60 81 56 69 69 RELATIVE HUMIDITY (MEAN% 09UTC) 57 47 61 53 57 58 66 64 55 63 44 52 56 RELATIVE HUMIDITY (MEAN% 15UTC) 67 56 72 61 72 63 76 71 64 70 56 65 66 RH=0 => RELATIVE HUMIDITY < 0.5% AMOUNT OF PRECIPITATION MM. 192.0 17.5 0.0 0.0 0.0 0.0 0.2 0.0 0.0 0.0 0.0 0.0 209.7 DAYS WITH PRECIPITATION >=10 6 0 0 0 0 0 0 0 0 0 0 0 6 DAYS WITH PRECIPITATION >= 5 8 2 0 0 0 0 0 0 0 0 0 0 10 DAYS WITH PRECIPITATION >= 1 8 3 0 0 0 0 0 0 0 0 0 0 11 DAYS WITH PRECIPITATION 8 3 0 0 0 0 1 0 0 0 0 0 12 GREATEST DAILY PRECIPITATION 43.0 9.0 0.0 0.0 0.0 0.0 0.2 0.0 0.0 0.0 0.0 0.0 43.0 DAY 9 22 ** ** ** ** 26 ** ** ** ** ** DAY WITH THUNDER STORM 1 2 2 1 3 0 0 1 0 1 0 0 11 DAYS WITH SNOW OR SLEET 0 0 0 0 0 0 0 0 0 0 0 0 0 DAYS WITH DUST 8 4 7 7 6 9 5 1 5 6 5 0 63 WIND DIRECTION (PREVAILING) 90 270 270 270 270 180 180 180 270 180 270 270 270 PREVAILING WIND SPEED(KNOTS) 4.7 4.1 5.3 6.1 4.5 5.1 4.8 4.1 3.9 3.3 4.1 3.6 4.7 PREVAILING WIND PERCENT 42.6 37.1 34.8 48.0 39.4 40.0 62.6 54.8 38.0 31.0 48.0 30.3 31.7 CALMS PERCENT OF WIND 9.7 9.3 11.0 7.3 9.0 5.3 0.6 0.6 8.0 15.5 8.7 9.7 7.9 NO. OF WIND OBSERVATION 155 140 155 150 155 150 155 155 150 155 150 155 1825 VECTOR WIND DIRECTION (MEAN) 65 277 232 281 213 213 156 164 223 199 257 244 219 VECTOR WIND MAGNITUDE(KNOTS) 0.5 1.6 1.0 3.6 1.7 1.9 3.4 2.4 0.8 1.6 1.7 0.8 1.2 WIND STEADINESES (MEAN %) 11.1 61.5 23.3 73.5 44.7 40.4 68.0 58.5 25.0 44.4 58.6 38.1 31.6 WIND SPEED (MEAN KNOTS) 4.5 2.6 4.3 4.9 3.8 4.7 5.0 4.1 3.2 3.6 2.9 2.1 3.8 FASTEST WIND DIRECTION 310 270 270 310 110 90 160 90 270 270 290 290 310 FASTEST WIND SPEED (KNOTS) 24 16 20 32 20 20 18 14 12 20 25 14 32 DAY 31 26 18 8 21 15 23 23 10 10 4 19 DAYS WITH SKY CLEAR (0-2)/8 18 24 26 17 30 30 24 27 28 28 26 27 305 DAYS WITH P.CLOUDY (3-6)/8 6 3 5 9 1 0 4 4 0 3 4 4 43 DAYS WITH CLOUDY (7-8)/8 7 1 0 4 0 0 3 0 0 0 0 0 15 DAYS WITH VISIBILITY =< 2 KM 9 4 6 2 2 3 1 0 4 2 1 0 34 DURATION OF SUNSHINE HOURS ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION JASK (40893) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 25 38 N LONGITUDE 57 46 E DATA PROCESSING CENTER ELEVATION 5.2 M MEANS AND EXTREMES FOR THE YEAR 1969 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL MEAN QFE PRESSURE IN HPA 1015.8 1015.9 1011.2 1008.8 1004.5 999.2 996.8 999.9 1004.7 1010.4 1014.6 1016.8 1008.2 MAX. QFE PRESSURE IN HPA 1023.9 1023.2 1017.6 1013.3 1011.9 1006.7 1002.5 1008.7 1011.9 1016.2 1022.6 1022.3 1023.9 DAY-HOUR 13- 6 4- 6 1- 6 7- 3 4- 6 3- 6 27- 6 24- 6 29- 6 31- 6 24- 6 17- 6 MIN. QFE PRESSURE IN HPA 1010.0 1008.9 1005.1 1004.5 996.6 994.0 991.6 991.4 998.2 1004.0 1009.7 1011.0 991.4 DAY-HOUR 25-12 15-12 24- 3 17-12 9- 6 22-12 21-15 7-12 7-12 29-15 3-12 7-12 MEAN QNH PRESSURE IN HPA 1016.1 1016.2 1011.5 1009.1 1004.8 999.6 997.1 1000.3 1005.0 1010.7 1015.0 1017.1 1008.5 MAX. QNH PRESSURE IN HPA 1024.2 1023.5 1017.9 1013.6 1012.2 1007.0 1002.8 1009.0 1012.2 1016.5 1022.9 1022.6 1024.2 DAY-HOUR 13- 6 4- 6 1- 6 7- 3 4- 6 3- 6 27- 6 24- 6 29- 6 31- 6 24- 6 17- 6 MIN. QNH PRESSURE IN HPA 1010.3 1009.2 1005.4 1004.8 996.9 994.3 991.9 991.7 998.5 1004.3 1010.0 1011.3 991.7 DAY-HOUR 25-12 15-12 24- 3 17-12 9- 6 22-12 21-15 7-12 7-12 29-15 3-12 7-12 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY-HOUR **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY-HOUR **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** PRESSURE AT HOUR 0000 UTC. MEAN QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** PRESSURE AT HOUR 0300 UTC. MEAN QFE PRESSURE IN HPA 1015.9 1016.3 1011.2 1008.8 1004.9 999.8 997.4 1000.7 1005.2 1010.8 1015.3 1017.1 1008.6 MAX. QFE PRESSURE IN HPA 1022.2 1022.0 1016.2 1013.3 1010.4 1005.4 1001.1 1007.6 1010.8 1015.0 1021.2 1020.7 1022.2 DAY 13 4 1 7 5 3 27 24 29 31 24 17 MIN. QFE PRESSURE IN HPA 1010.6 1010.8 1005.1 1005.6 999.8 996.2 993.0 993.2 1000.2 1008.0 1011.2 1014.4 993.0 DAY 25 15 24 17 31 22 18 7 7 2 9 8 MEAN QNH PRESSURE IN HPA 1016.3 1016.6 1011.6 1009.1 1005.2 1000.1 997.7 1001.0 1005.5 1011.1 1015.6 1017.5 1008.9 MAX. QNH PRESSURE IN HPA 1022.5 1022.3 1016.5 1013.6 1010.7 1005.7 1001.4 1007.9 1011.1 1015.3 1021.5 1021.0 1022.5 DAY 13 4 1 7 5 3 27 24 29 31 24 17 MIN. QNH PRESSURE IN HPA 1010.9 1011.1 1005.4 1005.9 1000.1 996.5 993.3 993.5 1000.5 1008.3 1011.5 1014.7 993.3 DAY 25 15 24 17 31 22 18 7 7 2 9 8 MEAN QFF PRESSURE IN HPA 1016.5 1016.9 1011.8 1009.4 1005.5 1000.4 998.0 1001.3 1005.7 1011.4 1015.9 1017.7 1009.2 MAX. QFF PRESSURE IN HPA 1022.8 1022.6 1016.8 1013.9 1011.0 1006.0 1001.7 1008.2 1011.4 1015.6 1021.8 1021.3 1022.8 DAY 13 4 1 7 5 3 27 24 29 31 24 17 MIN. QFF PRESSURE IN HPA 1011.2 1011.4 1005.7 1006.2 1000.4 996.8 993.6 993.8 1000.8 1008.6 1011.8 1015.0 993.6 DAY 25 15 24 17 31 22 18 7 7 2 9 8 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION JASK (40893) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 25 38 N LONGITUDE 57 46 E DATA PROCESSING CENTER ELEVATION 5.2 M MEANS AND EXTREMES FOR THE YEAR 1969 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 0600 UTC. MEAN QFE PRESSURE IN HPA 1017.6 1017.6 1012.9 1010.4 1005.8 1000.7 998.3 1001.4 1006.4 1012.3 1016.6 1018.7 1009.9 MAX. QFE PRESSURE IN HPA 1023.9 1023.2 1017.6 1013.3 1011.9 1006.7 1002.5 1008.7 1011.9 1016.2 1022.6 1022.3 1023.9 DAY 13 4 1 9 4 3 27 24 29 31 24 17 MIN. QFE PRESSURE IN HPA 1012.1 1011.5 1008.2 1006.5 996.6 996.5 994.5 994.5 1001.3 1009.1 1012.3 1015.2 994.5 DAY 25 15 18 18 9 22 18 7 7 2 3 7 MEAN QNH PRESSURE IN HPA 1017.9 1017.9 1013.3 1010.7 1006.1 1001.1 998.6 1001.8 1006.7 1012.6 1016.9 1019.1 1010.2 MAX. QNH PRESSURE IN HPA 1024.2 1023.5 1017.9 1013.6 1012.2 1007.0 1002.8 1009.0 1012.2 1016.5 1022.9 1022.6 1024.2 DAY 13 4 1 9 4 3 27 24 29 31 24 17 MIN. QNH PRESSURE IN HPA 1012.4 1011.8 1008.5 1006.8 996.9 996.8 994.8 994.8 1001.6 1009.4 1012.6 1015.5 994.8 DAY 25 15 18 18 9 22 18 7 7 2 3 7 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** PRESSURE AT HOUR 0900 UTC. MEAN QFE PRESSURE IN HPA 1015.4 1015.8 1011.7 1009.3 1005.0 999.8 997.1 1000.3 1005.1 1010.5 1014.4 1016.4 1008.4 MAX. QFE PRESSURE IN HPA 1021.6 1020.8 1016.0 1012.4 1011.2 1005.5 1001.0 1007.4 1010.5 1013.9 1020.5 1020.4 1021.6 DAY 13 4 1 23 4 3 27 25 29 26 24 17 MIN. QFE PRESSURE IN HPA 1010.3 1009.8 1006.2 1006.1 1000.1 995.5 994.0 993.2 999.5 1007.5 1010.9 1012.5 993.2 DAY 25 15 18 17 31 22 21 7 10 1 3 7 MEAN QNH PRESSURE IN HPA 1015.7 1016.2 1012.0 1009.6 1005.4 1000.1 997.4 1000.6 1005.4 1010.8 1014.7 1016.7 1008.7 MAX. QNH PRESSURE IN HPA 1021.9 1021.1 1016.3 1012.7 1011.5 1005.8 1001.3 1007.7 1010.8 1014.2 1020.8 1020.7 1021.9 DAY 13 4 1 23 4 3 27 25 29 26 24 17 MIN. QNH PRESSURE IN HPA 1010.6 1010.1 1006.5 1006.4 1000.4 995.8 994.3 993.5 999.8 1007.8 1011.2 1012.8 993.5 DAY 25 15 18 17 31 22 21 7 10 1 3 7 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** PRESSURE AT HOUR 1200 UTC. MEAN QFE PRESSURE IN HPA 1014.7 1014.6 1009.9 1007.7 1003.4 997.9 995.7 998.5 1003.5 1009.2 1013.4 1015.5 1007.0 MAX. QFE PRESSURE IN HPA 1020.0 1019.8 1015.1 1010.3 1010.1 1002.7 999.7 1005.1 1009.1 1012.8 1019.6 1019.4 1020.0 DAY 13 3 3 2 4 3 26 24 29 25 24 17 MIN. QFE PRESSURE IN HPA 1010.0 1008.9 1006.0 1004.5 998.0 994.0 991.9 991.4 998.2 1005.5 1009.7 1011.0 991.4 DAY 25 15 18 17 29 22 22 7 7 2 3 7 MEAN QNH PRESSURE IN HPA 1015.0 1014.9 1010.2 1008.0 1003.7 998.2 996.0 998.8 1003.8 1009.5 1013.7 1015.8 1007.3 MAX. QNH PRESSURE IN HPA 1020.3 1020.1 1015.4 1010.6 1010.4 1003.0 1000.0 1005.4 1009.4 1013.1 1019.9 1019.7 1020.3 DAY 13 3 3 2 4 3 26 24 29 25 24 17 MIN. QNH PRESSURE IN HPA 1010.3 1009.2 1006.3 1004.8 998.3 994.3 992.2 991.7 998.5 1005.8 1010.0 1011.3 991.7 DAY 25 15 18 17 29 22 22 7 7 2 3 7 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION JASK (40893) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 25 38 N LONGITUDE 57 46 E DATA PROCESSING CENTER ELEVATION 5.2 M MEANS AND EXTREMES FOR THE YEAR 1969 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 1500 UTC. MEAN QFE PRESSURE IN HPA 1015.3 1015.1 1010.3 1008.0 1003.5 998.1 995.5 998.8 1003.6 1009.4 1013.7 1016.1 1007.3 MAX. QFE PRESSURE IN HPA 1021.0 1021.1 1015.2 1011.7 1010.3 1003.7 999.1 1005.6 1009.1 1013.4 1020.1 1019.6 1021.1 DAY 13 3 3 6 4 3 26 24 29 25 24 17 MIN. QFE PRESSURE IN HPA 1010.4 1009.7 1006.7 1004.6 998.3 994.1 991.6 992.0 998.7 1004.0 1010.0 1012.0 991.6 DAY 25 11 18 17 29 22 21 6 10 29 3 7 MEAN QNH PRESSURE IN HPA 1015.6 1015.4 1010.6 1008.3 1003.8 998.4 995.8 999.2 1003.9 1009.7 1014.0 1016.5 1007.6 MAX. QNH PRESSURE IN HPA 1021.3 1021.4 1015.5 1012.0 1010.6 1004.0 999.4 1005.9 1009.4 1013.7 1020.4 1019.9 1021.4 DAY 13 3 3 6 4 3 26 24 29 25 24 17 MIN. QNH PRESSURE IN HPA 1010.7 1010.0 1007.0 1004.9 998.6 994.4 991.9 992.3 999.0 1004.3 1010.3 1012.3 991.9 DAY 25 11 18 17 29 22 21 6 10 29 3 7 MEAN QFF PRESSURE IN HPA 1015.9 1015.7 1010.9 1008.6 1004.1 998.6 996.0 999.4 1004.1 1009.9 1014.3 1016.7 1007.9 MAX. QFF PRESSURE IN HPA 1021.6 1021.7 1015.8 1012.3 1010.9 1004.3 999.7 1006.2 1009.7 1014.0 1020.7 1020.2 1021.7 DAY 13 3 3 6 4 3 26 24 29 25 24 17 MIN. QFF PRESSURE IN HPA 1011.0 1010.3 1007.3 1005.2 998.9 994.7 992.2 992.6 999.3 1004.6 1010.6 1012.6 992.2 DAY 25 11 18 17 29 22 21 6 10 29 3 7 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 JASK (40893) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 25 38 N LONGITUDE 57 46 E DATA PROCESSING CENTER ELEVATION 5.2 M MEANS AND EXTREMES FOR THE YEAR 1970 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AIR TEMPERATURE (C) 20.9 23.1 24.6 28.7 31.4 33.1 33.2 31.7 31.8 29.4 26.7 23.2 28.1 MINIMUN AIR TEMPERATURE (C) 14.7 17.0 19.0 22.2 25.7 29.3 28.5 28.4 27.7 23.9 19.7 16.9 22.8 DAYS WITH MINIMUM TEMP. >=21 0 0 6 23 31 30 31 31 30 28 8 0 218 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) 10.0 13.0 15.0 18.0 22.0 26.0 23.0 23.0 23.0 19.0 18.0 11.0 10.0 DAY 30 1 7 5 15 1 19 25 27 28 7 17 MAXIMUM AIR TEMPERATURE (C) 23.5 25.6 27.0 31.5 34.5 35.6 35.4 33.6 34.4 32.0 29.4 25.5 30.7 DAYS WITH MAXIMUM TEMP. >=30 0 1 4 25 31 30 31 31 30 30 13 0 226 DAYS WITH MAXIMUM TEMP. <= 0 0 0 0 0 0 0 0 0 0 0 0 0 0 TEMPERATURE RECORDS HIGHEST(C) 26.0 30.0 31.0 36.0 43.0 42.0 39.0 37.0 37.0 36.0 31.0 28.0 43.0 DAY 1 23 22 23 28 15 21 20 26 20 2 1 DIF. BETWEEN (MAX.-MIN.) (C) 8.8 8.6 8.0 9.3 8.8 6.3 6.9 5.2 6.7 8.1 9.7 8.6 7.9 MEAN DAILY TEMP. (MDT) (C) 19.1 21.3 23.0 26.8 30.1 32.5 32.0 31.0 31.0 28.0 24.5 21.2 26.7 COOLING DEG. DAYS(BASE 21 0C) 2.0 23.0 66.0 175.5 282.0 344.0 339.5 311.0 301.0 215.5 105.5 30.0 2195.0 HEATING DEG. DAYS(BASE 18 0C) 10.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 3.5 13.5 DEWPOINT (MEAN C) 11.6 14.8 16.2 18.9 21.4 26.4 26.7 26.0 23.8 22.6 18.6 13.0 20.0 MIXING RATIO (G/KG) 8.69 10.66 11.73 14.02 16.62 22.37 22.80 21.82 19.58 17.62 13.63 10.01 15.79 VAPOUR PRESSURE (HPA) 13.98 17.08 18.71 22.21 26.05 34.64 35.22 33.81 30.53 27.79 21.74 16.07 24.82 SATURATION DEF. (HPA) 11.12 11.41 12.40 17.39 20.26 16.12 15.79 13.05 16.85 13.40 13.58 12.70 14.51 RELATIVE HUMIDITY (MEAN %) 57 61 61 57 58 70 70 72 65 68 62 56 63 RELATIVE HUMIDITY (MAX. %) 71 72 72 71 73 79 78 80 76 79 73 71 75 RELATIVE HUMIDITY (MIN. %) 47 52 51 44 45 61 62 64 56 58 53 46 53 RELATIVE HUMIDITY (MEAN% 03UTC) 68 68 68 62 69 76 75 78 70 75 68 66 70 RELATIVE HUMIDITY (MEAN% 09UTC) 52 54 56 52 55 64 64 66 61 62 56 50 58 RELATIVE HUMIDITY (MEAN% 15UTC) 56 65 64 66 61 72 76 79 71 72 66 58 67 RH=0 => RELATIVE HUMIDITY < 0.5% AMOUNT OF PRECIPITATION MM. 103.4 0.0 2.5 0.0 0.0 0.0 0.0 1.0 0.0 107.0 0.0 0.0 213.9 DAYS WITH PRECIPITATION >=10 3 0 0 0 0 0 0 0 0 2 0 0 5 DAYS WITH PRECIPITATION >= 5 3 0 0 0 0 0 0 0 0 2 0 0 5 DAYS WITH PRECIPITATION >= 1 6 0 1 0 0 0 0 1 0 2 0 0 10 DAYS WITH PRECIPITATION 7 0 2 0 0 0 0 1 0 2 0 0 12 GREATEST DAILY PRECIPITATION 51.0 0.0 2.0 0.0 0.0 0.0 0.0 1.0 0.0 70.0 0.0 0.0 70.0 DAY 18 ** 8 ** ** ** ** 24 ** 25 ** ** DAY WITH THUNDER STORM 5 2 6 0 0 0 1 0 0 2 0 0 16 DAYS WITH SNOW OR SLEET 0 0 0 0 0 0 0 0 0 0 0 0 0 DAYS WITH DUST 1 6 7 1 7 7 4 5 0 2 2 3 45 WIND DIRECTION (PREVAILING) 270 270 270 270 270 180 180 180 180 180 270 270 270 PREVAILING WIND SPEED(KNOTS) 4.4 5.0 6.5 3.9 5.6 6.1 5.4 4.0 4.8 3.5 4.2 5.9 5.0 PREVAILING WIND PERCENT 21.9 28.6 48.4 72.0 65.2 52.7 48.4 59.4 37.3 44.5 42.7 40.6 35.8 CALMS PERCENT OF WIND 4.5 10.7 3.9 0.0 0.0 0.0 0.0 1.3 4.7 5.8 16.0 9.0 4.6 NO. OF WIND OBSERVATION 155 140 155 150 155 150 155 155 150 155 150 155 1825 VECTOR WIND DIRECTION (MEAN) 309 247 246 260 250 180 171 141 174 199 233 258 211 VECTOR WIND MAGNITUDE(KNOTS) 0.7 1.4 2.2 2.7 3.6 3.8 3.3 4.0 2.4 1.7 2.2 2.1 1.8 WIND STEADINESES (MEAN %) 24.1 48.3 43.1 77.1 72.0 62.3 63.5 85.1 54.5 47.2 71.0 60.0 42.9 WIND SPEED (MEAN KNOTS) 2.9 2.9 5.1 3.5 5.0 6.1 5.2 4.7 4.4 3.6 3.1 3.5 4.2 FASTEST WIND DIRECTION 290 270 270 270 270 270 270 110 180 270 270 290 290 FASTEST WIND SPEED (KNOTS) 20 20 16 12 20 25 18 14 10 18 16 36 36 DAY 28 21 14 9 20 5 27 23 21 21 22 15 DAYS WITH SKY CLEAR (0-2)/8 20 23 24 27 31 29 27 28 28 30 30 26 323 DAYS WITH P.CLOUDY (3-6)/8 8 5 7 3 0 1 4 3 2 1 0 3 37 DAYS WITH CLOUDY (7-8)/8 3 0 0 0 0 0 0 0 0 0 0 2 5 DAYS WITH VISIBILITY =< 2 KM 1 0 3 2 4 5 4 0 0 1 0 2 22 DURATION OF SUNSHINE HOURS ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION JASK (40893) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 25 38 N LONGITUDE 57 46 E DATA PROCESSING CENTER ELEVATION 5.2 M MEANS AND EXTREMES FOR THE YEAR 1970 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL MEAN QFE PRESSURE IN HPA 1016.0 1014.4 1011.4 1008.9 1002.4 998.3 996.5 998.2 1002.4 1009.6 1014.7 1016.8 1007.5 MAX. QFE PRESSURE IN HPA 1023.2 1022.4 1017.8 1014.0 1007.8 1003.7 1001.8 1009.0 1008.8 1017.7 1019.5 1024.5 1024.5 DAY-HOUR 30- 6 4- 6 3- 6 5- 6 1- 6 21- 6 25- 6 17- 6 22- 6 30- 6 28- 6 16- 6 MIN. QFE PRESSURE IN HPA 1010.1 1005.7 1004.7 1003.1 994.8 993.6 992.5 993.1 996.4 1004.2 1010.6 1009.5 992.5 DAY-HOUR 28-12 23-12 5-12 18-12 29-12 13-15 27-15 21-15 9-15 5-15 22-12 1-12 MEAN QNH PRESSURE IN HPA 1016.3 1014.7 1011.7 1009.2 1002.7 998.7 996.8 998.5 1002.7 1010.0 1015.0 1017.1 1007.8 MAX. QNH PRESSURE IN HPA 1023.5 1022.7 1018.1 1014.3 1008.1 1004.0 1002.1 1009.3 1009.1 1018.0 1019.8 1024.8 1024.8 DAY-HOUR 30- 6 4- 6 3- 6 5- 6 1- 6 21- 6 25- 6 17- 6 22- 6 30- 6 28- 6 16- 6 MIN. QNH PRESSURE IN HPA 1010.4 1006.0 1005.0 1003.4 995.1 993.9 992.8 993.4 996.7 1004.5 1010.9 1009.8 992.8 DAY-HOUR 28-12 23-12 5-12 18-12 29-12 13-15 27-15 21-15 9-15 5-15 22-12 1-12 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 1016.2 1014.8 1011.6 1009.0 1002.8 998.6 997.0 998.6 1002.9 1010.1 1015.5 1017.0 1007.8 MAX. QFE PRESSURE IN HPA 1021.3 1020.0 1016.2 1012.1 1006.5 1002.5 1000.9 1001.6 1008.1 1016.3 1018.7 1022.2 1022.2 DAY 30 4 3 5 1 21 25 24 23 31 29 16 MIN. QFE PRESSURE IN HPA 1012.1 1007.6 1005.5 1005.7 996.2 995.8 994.6 995.9 998.2 1005.6 1012.8 1010.2 994.6 DAY 12 23 6 23 29 14 27 7 1 23 25 1 MEAN QNH PRESSURE IN HPA 1016.5 1015.1 1011.9 1009.4 1003.1 998.9 997.3 998.9 1003.2 1010.4 1015.9 1017.4 1008.2 MAX. QNH PRESSURE IN HPA 1021.6 1020.3 1016.5 1012.4 1006.8 1002.8 1001.2 1001.9 1008.4 1016.6 1019.0 1022.5 1022.5 DAY 30 4 3 5 1 21 25 24 23 31 29 16 MIN. QNH PRESSURE IN HPA 1012.4 1007.9 1005.8 1006.0 996.5 996.1 994.9 996.2 998.5 1005.9 1013.1 1010.5 994.9 DAY 12 23 6 23 29 14 27 7 1 23 25 1 MEAN QFF PRESSURE IN HPA 1016.8 1015.4 1012.2 1009.6 1003.3 999.2 997.5 999.2 1003.5 1010.7 1016.1 1017.6 1008.4 MAX. QFF PRESSURE IN HPA 1021.9 1020.6 1016.8 1012.7 1007.1 1003.1 1001.5 1002.2 1008.7 1016.9 1019.3 1022.8 1022.8 DAY 30 4 3 5 1 21 25 24 23 31 29 16 MIN. QFF PRESSURE IN HPA 1012.7 1008.2 1006.1 1006.3 996.8 996.4 995.2 996.5 998.8 1006.2 1013.4 1010.8 995.2 DAY 12 23 6 23 29 14 27 7 1 23 25 1 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION JASK (40893) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 25 38 N LONGITUDE 57 46 E DATA PROCESSING CENTER ELEVATION 5.2 M MEANS AND EXTREMES FOR THE YEAR 1970 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 0600 UTC. MEAN QFE PRESSURE IN HPA 1017.9 1016.2 1013.2 1010.6 1003.9 999.8 997.8 999.8 1003.9 1011.3 1016.5 1018.4 1009.1 MAX. QFE PRESSURE IN HPA 1023.2 1022.4 1017.8 1014.0 1007.8 1003.7 1001.8 1009.0 1008.8 1017.7 1019.5 1024.5 1024.5 DAY 30 4 3 5 1 21 25 17 22 30 28 16 MIN. QFE PRESSURE IN HPA 1012.1 1008.4 1006.5 1006.7 996.8 996.5 995.3 996.7 999.5 1006.4 1013.2 1011.3 995.3 DAY 12 23 6 19 29 14 7 6 1 22 25 1 MEAN QNH PRESSURE IN HPA 1018.2 1016.5 1013.5 1010.9 1004.3 1000.1 998.1 1000.2 1004.2 1011.6 1016.8 1018.8 1009.4 MAX. QNH PRESSURE IN HPA 1023.5 1022.7 1018.1 1014.3 1008.1 1004.0 1002.1 1009.3 1009.1 1018.0 1019.8 1024.8 1024.8 DAY 30 4 3 5 1 21 25 17 22 30 28 16 MIN. QNH PRESSURE IN HPA 1012.4 1008.7 1006.8 1007.0 997.1 996.8 995.6 997.0 999.8 1006.7 1013.5 1011.6 995.6 DAY 12 23 6 19 29 14 7 6 1 22 25 1 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 1015.8 1014.3 1011.4 1009.0 1003.0 998.7 996.6 998.4 1002.5 1009.8 1014.5 1016.7 1007.6 MAX. QFE PRESSURE IN HPA 1020.4 1020.2 1016.0 1013.1 1006.6 1003.4 1000.7 1000.9 1007.1 1016.4 1017.3 1022.3 1022.3 DAY 30 4 3 5 10 21 25 24 27 30 29 31 MIN. QFE PRESSURE IN HPA 1010.8 1007.8 1005.9 1004.3 996.7 995.7 994.0 994.7 997.4 1006.0 1011.5 1010.3 994.0 DAY 28 23 6 18 29 13 27 21 9 5 25 1 MEAN QNH PRESSURE IN HPA 1016.1 1014.6 1011.8 1009.4 1003.3 999.1 996.9 998.7 1002.9 1010.1 1014.8 1017.0 1007.9 MAX. QNH PRESSURE IN HPA 1020.7 1020.5 1016.3 1013.4 1006.9 1003.7 1001.0 1001.2 1007.4 1016.7 1017.6 1022.6 1022.6 DAY 30 4 3 5 10 21 25 24 27 30 29 31 MIN. QNH PRESSURE IN HPA 1011.1 1008.1 1006.2 1004.6 997.0 996.0 994.3 995.0 997.7 1006.3 1011.8 1010.6 994.3 DAY 28 23 6 18 29 13 27 21 9 5 25 1 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 1014.8 1013.1 1010.1 1007.8 1001.2 997.4 995.9 997.0 1001.2 1008.6 1013.4 1015.6 1006.3 MAX. QFE PRESSURE IN HPA 1019.8 1018.9 1013.6 1012.1 1004.8 1000.3 998.8 999.1 1006.1 1014.8 1015.8 1020.6 1020.6 DAY 30 4 2 5 10 2 25 14 22 31 28 16 MIN. QFE PRESSURE IN HPA 1010.1 1005.7 1004.7 1003.1 994.8 994.6 993.0 994.3 996.7 1004.2 1010.6 1009.5 993.0 DAY 28 23 5 18 29 14 7 6 1 22 22 1 MEAN QNH PRESSURE IN HPA 1015.1 1013.4 1010.4 1008.1 1001.5 997.7 996.2 997.3 1001.6 1008.9 1013.7 1015.9 1006.6 MAX. QNH PRESSURE IN HPA 1020.1 1019.2 1013.9 1012.4 1005.1 1000.6 999.1 999.4 1006.4 1015.1 1016.1 1020.9 1020.9 DAY 30 4 2 5 10 2 25 14 22 31 28 16 MIN. QNH PRESSURE IN HPA 1010.4 1006.0 1005.0 1003.4 995.1 994.9 993.3 994.6 997.0 1004.5 1010.9 1009.8 993.3 DAY 28 23 5 18 29 14 7 6 1 22 22 1 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION JASK (40893) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 25 38 N LONGITUDE 57 46 E DATA PROCESSING CENTER ELEVATION 5.2 M MEANS AND EXTREMES FOR THE YEAR 1970 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 1500 UTC. MEAN QFE PRESSURE IN HPA 1015.6 1013.5 1010.5 1007.9 1001.3 997.2 995.3 997.0 1001.5 1008.6 1013.7 1016.3 1006.5 MAX. QFE PRESSURE IN HPA 1020.0 1018.8 1014.2 1011.2 1005.0 1000.5 998.4 1000.6 1006.2 1015.5 1016.4 1021.3 1021.3 DAY 30 4 3 4 10 2 25 23 22 29 28 16 MIN. QFE PRESSURE IN HPA 1010.3 1006.0 1004.7 1003.2 995.3 993.6 992.5 993.1 996.4 1004.2 1010.9 1009.7 992.5 DAY 28 23 5 18 28 13 27 21 9 5 22 1 MEAN QNH PRESSURE IN HPA 1015.9 1013.8 1010.8 1008.3 1001.6 997.5 995.6 997.3 1001.8 1008.9 1014.0 1016.6 1006.8 MAX. QNH PRESSURE IN HPA 1020.3 1019.1 1014.5 1011.5 1005.3 1000.8 998.7 1000.9 1006.5 1015.8 1016.7 1021.6 1021.6 DAY 30 4 3 4 10 2 25 23 22 29 28 16 MIN. QNH PRESSURE IN HPA 1010.6 1006.3 1005.0 1003.5 995.6 993.9 992.8 993.4 996.7 1004.5 1011.2 1010.0 992.8 DAY 28 23 5 18 28 13 27 21 9 5 22 1 MEAN QFF PRESSURE IN HPA 1016.2 1014.1 1011.1 1008.5 1001.8 997.8 995.9 997.6 1002.0 1009.1 1014.3 1016.9 1007.1 MAX. QFF PRESSURE IN HPA 1020.6 1019.4 1014.8 1011.8 1005.6 1001.1 999.0 1001.2 1006.8 1016.1 1017.0 1021.9 1021.9 DAY 30 4 3 4 10 2 25 23 27 29 28 16 MIN. QFF PRESSURE IN HPA 1010.9 1006.6 1005.3 1003.8 995.9 994.2 993.1 993.7 997.0 1004.8 1011.5 1010.3 993.1 DAY 28 23 5 18 28 13 27 21 9 5 22 1 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 JASK (40893) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 25 38 N LONGITUDE 57 46 E DATA PROCESSING CENTER ELEVATION 5.2 M MEANS AND EXTREMES FOR THE YEAR 1971 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AIR TEMPERATURE (C) 20.8 21.6 24.5 28.3 30.8 32.1 31.7 31.0 31.2 28.2 25.0 23.2 27.4 MINIMUN AIR TEMPERATURE (C) 13.6 15.1 18.0 22.9 25.3 26.8 27.5 27.0 25.6 21.6 19.1 19.2 21.8 DAYS WITH MINIMUM TEMP. >=21 0 0 4 27 31 30 31 29 30 18 3 7 210 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) 6.0 10.0 15.0 20.0 21.0 23.0 22.0 20.0 22.0 18.0 17.0 12.0 6.0 DAY 24 4 1 2 1 21 10 23 25 23 12 23 MAXIMUM AIR TEMPERATURE (C) 23.8 23.9 27.3 31.5 33.4 35.1 34.1 32.8 34.0 31.3 27.6 26.5 30.1 DAYS WITH MAXIMUM TEMP. >=30 0 0 6 25 31 30 31 31 30 29 2 0 215 DAYS WITH MAXIMUM TEMP. <= 0 0 0 0 0 0 0 0 0 0 0 0 0 0 TEMPERATURE RECORDS HIGHEST(C) 28.0 29.0 32.0 36.0 39.0 38.0 40.0 40.0 39.0 35.0 30.0 29.0 40.0 DAY 3 24 30 18 26 3 28 8 24 1 1 5 DIF. BETWEEN (MAX.-MIN.) (C) 10.2 8.8 9.3 8.6 8.1 8.3 6.6 5.8 8.4 9.7 8.5 7.3 8.3 MEAN DAILY TEMP. (MDT) (C) 18.7 19.5 22.6 27.2 29.4 30.9 30.8 29.9 29.8 26.5 23.3 22.9 26.0 COOLING DEG. DAYS(BASE 21 0C) 3.0 4.5 56.0 186.0 259.5 297.5 304.0 276.5 264.0 170.0 70.0 65.0 1956.0 HEATING DEG. DAYS(BASE 18 0C) 23.5 8.5 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.5 32.5 DEWPOINT (MEAN C) 9.2 12.3 14.3 17.3 22.8 20.4 26.1 25.3 21.3 19.5 17.0 15.4 18.4 MIXING RATIO (G/KG) 7.77 9.27 10.52 12.67 18.36 15.69 22.04 20.81 17.44 14.84 12.30 11.16 14.41 VAPOUR PRESSURE (HPA) 12.52 14.86 16.85 20.10 28.70 24.46 34.09 32.34 27.32 23.52 19.70 17.89 22.69 SATURATION DEF. (HPA) 12.55 11.24 14.28 18.76 15.86 23.67 13.01 12.83 18.54 15.06 12.27 10.97 14.92 RELATIVE HUMIDITY (MEAN %) 51 57 55 53 65 52 74 73 61 62 62 62 61 RELATIVE HUMIDITY (MAX. %) 63 70 70 70 77 65 84 79 76 77 74 72 73 RELATIVE HUMIDITY (MIN. %) 40 48 44 40 54 40 64 66 48 47 54 53 50 RELATIVE HUMIDITY (MEAN% 03UTC) 55 66 62 65 67 60 78 76 57 64 70 69 66 RELATIVE HUMIDITY (MEAN% 09UTC) 44 52 47 46 62 50 66 67 55 54 56 56 55 RELATIVE HUMIDITY (MEAN% 15UTC) 57 61 62 59 70 55 80 78 74 72 65 67 67 RH=0 => RELATIVE HUMIDITY < 0.5% AMOUNT OF PRECIPITATION MM. 40.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 12.0 0.0 52.0 DAYS WITH PRECIPITATION >=10 2 0 0 0 0 0 0 0 0 0 0 0 2 DAYS WITH PRECIPITATION >= 5 2 0 0 0 0 0 0 0 0 0 1 0 3 DAYS WITH PRECIPITATION >= 1 2 0 0 0 0 0 0 0 0 0 2 0 4 DAYS WITH PRECIPITATION 2 0 0 0 0 0 0 0 0 0 2 0 4 GREATEST DAILY PRECIPITATION 30.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 8.0 0.0 30.0 DAY 24 ** ** ** ** ** ** ** ** ** 11 ** DAY WITH THUNDER STORM 0 0 0 0 0 0 0 0 0 0 3 0 3 DAYS WITH SNOW OR SLEET 0 0 0 0 0 0 0 0 0 0 0 0 0 DAYS WITH DUST 6 5 7 4 3 9 1 2 1 0 1 2 41 WIND DIRECTION (PREVAILING) 270 270 270 270 270 270 180 180 180 270 225 270 270 PREVAILING WIND SPEED(KNOTS) 4.2 7.2 6.4 5.8 4.4 6.2 5.5 5.3 4.5 3.5 2.0 3.9 5.1 PREVAILING WIND PERCENT 38.1 52.9 61.3 82.0 41.9 69.3 71.0 86.5 50.0 49.0 23.3 23.9 41.1 CALMS PERCENT OF WIND 7.1 6.4 11.6 5.3 1.9 8.0 0.6 1.9 6.0 9.0 7.3 4.5 5.8 NO. OF WIND OBSERVATION 155 140 155 150 155 150 155 155 150 155 150 155 1825 VECTOR WIND DIRECTION (MEAN) 247 269 271 268 232 274 182 179 207 248 200 334 238 VECTOR WIND MAGNITUDE(KNOTS) 0.6 1.9 3.2 4.6 2.2 5.1 4.0 4.7 2.3 1.9 0.9 0.8 2.0 WIND STEADINESES (MEAN %) 17.6 27.9 65.3 88.5 59.5 92.7 80.0 92.2 57.5 67.9 40.9 23.5 46.5 WIND SPEED (MEAN KNOTS) 3.4 6.8 4.9 5.2 3.7 5.5 5.0 5.1 4.0 2.8 2.2 3.4 4.3 FASTEST WIND DIRECTION 90 90 290 270 130 310 180 180 290 270 130 340 90 FASTEST WIND SPEED (KNOTS) 20 32 32 30 18 20 18 12 20 12 12 20 32 DAY 23 14 23 8 31 4 9 29 24 1 9 31 DAYS WITH SKY CLEAR (0-2)/8 24 23 28 26 29 30 31 31 27 31 22 24 326 DAYS WITH P.CLOUDY (3-6)/8 7 5 2 3 2 0 0 0 3 0 7 6 35 DAYS WITH CLOUDY (7-8)/8 0 0 1 1 0 0 0 0 0 0 1 1 4 DAYS WITH VISIBILITY =< 2 KM 0 2 2 5 0 2 2 0 1 1 0 0 15 DURATION OF SUNSHINE HOURS ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION JASK (40893) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 25 38 N LONGITUDE 57 46 E DATA PROCESSING CENTER ELEVATION 5.2 M MEANS AND EXTREMES FOR THE YEAR 1971 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL MEAN QFE PRESSURE IN HPA 1016.3 1013.1 1013.7 1008.0 1002.9 995.6 996.5 999.4 1005.1 1011.1 1016.2 1016.1 1007.8 MAX. QFE PRESSURE IN HPA 1023.5 1021.5 1020.5 1013.7 1010.3 1000.4 1001.4 1005.2 1009.9 1017.8 1024.0 1021.8 1024.0 DAY-HOUR 4- 6 4- 6 10- 6 9- 6 30- 9 15- 6 6- 6 24- 3 15- 6 23- 6 20- 6 31- 6 MIN. QFE PRESSURE IN HPA 1012.0 1008.7 1005.7 1004.0 996.7 990.7 992.4 990.4 999.8 1002.0 1011.1 1010.2 990.4 DAY-HOUR 19-12 13-15 20-15 16- 3 26-15 23-15 27-15 9-15 3-15 3- 3 1-15 20-12 MEAN QNH PRESSURE IN HPA 1016.6 1013.5 1014.0 1008.4 1003.2 995.9 996.9 999.7 1005.4 1011.4 1016.5 1016.4 1008.2 MAX. QNH PRESSURE IN HPA 1023.8 1021.8 1020.8 1014.0 1010.6 1000.7 1001.7 1005.5 1010.2 1018.1 1024.3 1022.1 1024.3 DAY-HOUR 4- 6 4- 6 10- 6 9- 6 30- 9 15- 6 6- 6 24- 3 15- 6 23- 6 20- 6 31- 6 MIN. QNH PRESSURE IN HPA 1012.3 1009.0 1006.0 1004.3 997.0 991.0 992.7 990.7 1000.1 1002.3 1011.4 1010.5 990.7 DAY-HOUR 19-12 13-15 20-15 16- 3 26-15 23-15 27-15 9-15 3-15 3- 3 1-15 20-12 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 1016.7 1013.4 1013.9 1008.0 1003.2 996.4 997.1 1000.1 1005.6 1011.4 1017.0 1016.7 1008.3 MAX. QFE PRESSURE IN HPA 1022.5 1019.9 1018.6 1010.6 1007.1 1000.1 1001.1 1005.2 1009.3 1016.2 1021.8 1019.8 1022.5 DAY 4 4 10 9 4 15 10 24 15 25 20 31 MIN. QFE PRESSURE IN HPA 1012.6 1010.3 1007.3 1004.0 997.0 993.1 994.0 991.7 1001.8 1002.0 1012.0 1012.3 991.7 DAY 31 22 21 16 26 24 3 9 3 3 1 20 MEAN QNH PRESSURE IN HPA 1017.1 1013.7 1014.2 1008.3 1003.5 996.7 997.4 1000.5 1005.9 1011.8 1017.3 1017.0 1008.6 MAX. QNH PRESSURE IN HPA 1022.8 1020.2 1018.9 1010.9 1007.4 1000.4 1001.4 1005.5 1009.6 1016.5 1022.1 1020.1 1022.8 DAY 4 4 10 9 4 15 10 24 15 25 20 31 MIN. QNH PRESSURE IN HPA 1012.9 1010.6 1007.6 1004.3 997.3 993.4 994.3 992.0 1002.1 1002.3 1012.3 1012.6 992.0 DAY 31 22 21 16 26 24 3 9 3 3 1 20 MEAN QFF PRESSURE IN HPA 1017.3 1014.0 1014.4 1008.6 1003.8 996.9 997.7 1000.7 1006.2 1012.0 1017.6 1017.3 1008.9 MAX. QFF PRESSURE IN HPA 1023.1 1020.5 1019.2 1011.2 1007.7 1000.7 1001.7 1005.8 1009.9 1016.8 1022.4 1020.4 1023.1 DAY 4 4 10 9 4 15 10 24 15 25 20 31 MIN. QFF PRESSURE IN HPA 1013.2 1010.9 1007.9 1004.6 997.6 993.7 994.6 992.3 1002.4 1002.6 1012.6 1012.9 992.3 DAY 31 22 21 16 26 24 3 9 3 3 1 20 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION JASK (40893) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 25 38 N LONGITUDE 57 46 E DATA PROCESSING CENTER ELEVATION 5.2 M MEANS AND EXTREMES FOR THE YEAR 1971 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 0600 UTC. MEAN QFE PRESSURE IN HPA 1017.9 1014.8 1015.3 1009.3 1003.9 996.7 997.6 1000.7 1006.3 1012.4 1017.9 1017.3 1009.2 MAX. QFE PRESSURE IN HPA 1023.5 1021.5 1020.5 1013.7 1007.2 1000.4 1001.4 1004.9 1009.9 1017.8 1024.0 1021.8 1024.0 DAY 4 4 10 9 1 15 6 24 15 23 20 31 MIN. QFE PRESSURE IN HPA 1013.4 1011.6 1008.8 1006.5 997.4 992.9 994.0 992.3 1002.4 1004.6 1012.9 1012.4 992.3 DAY 31 26 20 18 26 24 3 9 3 1 1 20 MEAN QNH PRESSURE IN HPA 1018.2 1015.1 1015.6 1009.6 1004.3 997.0 997.9 1001.0 1006.6 1012.7 1018.3 1017.7 1009.5 MAX. QNH PRESSURE IN HPA 1023.8 1021.8 1020.8 1014.0 1007.5 1000.7 1001.7 1005.2 1010.2 1018.1 1024.3 1022.1 1024.3 DAY 4 4 10 9 1 15 6 24 15 23 20 31 MIN. QNH PRESSURE IN HPA 1013.7 1011.9 1009.1 1006.8 997.7 993.2 994.3 992.6 1002.7 1004.9 1013.2 1012.7 992.6 DAY 31 26 20 18 26 24 3 9 3 1 1 20 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 1016.2 1013.3 1014.0 1008.5 1003.3 995.9 996.8 999.5 1005.3 1011.1 1016.1 1016.0 1008.0 MAX. QFE PRESSURE IN HPA 1021.2 1020.5 1019.7 1012.7 1010.3 999.6 1000.7 1004.0 1008.4 1015.7 1020.9 1019.7 1021.2 DAY 5 4 10 9 30 15 6 24 15 24 20 31 MIN. QFE PRESSURE IN HPA 1013.0 1010.0 1006.8 1005.9 997.1 992.7 993.5 991.4 1001.2 1005.0 1011.5 1010.3 991.4 DAY 16 26 20 23 26 24 3 9 3 1 1 20 MEAN QNH PRESSURE IN HPA 1016.5 1013.6 1014.3 1008.9 1003.6 996.2 997.1 999.8 1005.7 1011.4 1016.4 1016.3 1008.3 MAX. QNH PRESSURE IN HPA 1021.5 1020.8 1020.0 1013.0 1010.6 999.9 1001.0 1004.3 1008.7 1016.0 1021.2 1020.0 1021.5 DAY 5 4 10 9 30 15 6 24 15 24 20 31 MIN. QNH PRESSURE IN HPA 1013.3 1010.3 1007.1 1006.2 997.4 993.0 993.8 991.7 1001.5 1005.3 1011.8 1010.6 991.7 DAY 16 26 20 23 26 24 3 9 3 1 1 20 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 1015.3 1012.2 1012.7 1007.5 1002.5 994.9 996.0 998.7 1004.3 1010.4 1015.2 1015.3 1007.1 MAX. QFE PRESSURE IN HPA 1021.3 1018.4 1017.9 1012.4 1009.2 999.4 1000.5 1003.4 1007.8 1015.4 1019.7 1019.4 1021.3 DAY 4 4 10 10 7 2 6 24 21 24 20 31 MIN. QFE PRESSURE IN HPA 1012.0 1009.4 1006.2 1005.6 996.9 991.6 992.9 991.2 1000.6 1005.0 1011.3 1010.2 991.2 DAY 19 21 20 6 26 24 27 9 3 3 1 20 MEAN QNH PRESSURE IN HPA 1015.6 1012.5 1013.1 1007.8 1002.8 995.2 996.3 999.0 1004.6 1010.7 1015.5 1015.7 1007.4 MAX. QNH PRESSURE IN HPA 1021.6 1018.7 1018.2 1012.7 1009.5 999.7 1000.8 1003.7 1008.1 1015.7 1020.0 1019.7 1021.6 DAY 4 4 10 10 7 2 6 24 21 24 20 31 MIN. QNH PRESSURE IN HPA 1012.3 1009.7 1006.5 1005.9 997.2 991.9 993.2 991.5 1000.9 1005.3 1011.6 1010.5 991.5 DAY 19 21 20 6 26 24 27 9 3 3 1 20 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION JASK (40893) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 25 38 N LONGITUDE 57 46 E DATA PROCESSING CENTER ELEVATION 5.2 M MEANS AND EXTREMES FOR THE YEAR 1971 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 1500 UTC. MEAN QFE PRESSURE IN HPA 1015.6 1012.1 1012.8 1007.1 1001.8 994.4 995.2 997.8 1003.8 1010.0 1014.9 1015.0 1006.7 MAX. QFE PRESSURE IN HPA 1021.7 1018.5 1017.7 1011.8 1007.7 998.0 999.7 1002.8 1007.0 1014.6 1022.0 1020.0 1022.0 DAY 4 4 10 10 30 1 6 24 20 24 22 31 MIN. QFE PRESSURE IN HPA 1012.0 1008.7 1005.7 1004.5 996.7 990.7 992.4 990.4 999.8 1005.0 1011.1 1011.2 990.4 DAY 23 13 20 6 26 23 27 9 3 2 1 20 MEAN QNH PRESSURE IN HPA 1015.9 1012.4 1013.1 1007.4 1002.1 994.7 995.6 998.1 1004.2 1010.3 1015.2 1015.4 1007.0 MAX. QNH PRESSURE IN HPA 1022.0 1018.8 1018.0 1012.1 1008.0 998.3 1000.0 1003.1 1007.3 1014.9 1022.3 1020.3 1022.3 DAY 4 4 10 10 30 1 6 24 20 24 22 31 MIN. QNH PRESSURE IN HPA 1012.3 1009.0 1006.0 1004.8 997.0 991.0 992.7 990.7 1000.1 1005.3 1011.4 1011.5 990.7 DAY 23 13 20 6 26 23 27 9 3 2 1 20 MEAN QFF PRESSURE IN HPA 1016.2 1012.7 1013.4 1007.6 1002.3 995.0 995.8 998.4 1004.4 1010.6 1015.5 1015.6 1007.3 MAX. QFF PRESSURE IN HPA 1022.3 1019.1 1018.3 1012.4 1008.3 998.6 1000.3 1003.4 1007.6 1015.2 1022.6 1020.6 1022.6 DAY 4 4 10 10 30 1 6 24 20 24 22 31 MIN. QFF PRESSURE IN HPA 1012.6 1009.3 1006.3 1005.1 997.3 991.3 993.0 991.0 1000.4 1005.6 1011.7 1011.8 991.0 DAY 23 13 20 6 26 23 27 9 3 2 1 20 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 JASK (40893) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 25 38 N LONGITUDE 57 46 E DATA PROCESSING CENTER ELEVATION 5.2 M MEANS AND EXTREMES FOR THE YEAR 1972 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AIR TEMPERATURE (C) 20.6 18.6 22.5 26.0 29.6 32.3 33.3 33.0 31.0 29.0 26.1 21.5 27.0 MINIMUN AIR TEMPERATURE (C) 17.2 14.1 18.5 22.0 25.3 28.9 30.4 29.2 27.5 23.9 21.2 16.1 22.9 DAYS WITH MINIMUM TEMP. >=21 2 0 6 26 31 30 31 31 30 30 22 2 241 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) 14.0 10.0 15.0 14.0 22.0 27.0 28.0 26.0 25.0 20.0 18.0 9.0 9.0 DAY 20 4 19 7 5 3 3 13 24 29 27 28 MAXIMUM AIR TEMPERATURE (C) 23.2 21.1 25.0 29.1 32.5 35.3 35.7 35.7 33.4 32.6 29.1 24.7 29.8 DAYS WITH MAXIMUM TEMP. >=30 0 0 0 11 28 30 31 31 30 31 15 0 207 DAYS WITH MAXIMUM TEMP. <= 0 0 0 0 0 0 0 0 0 0 0 0 0 0 TEMPERATURE RECORDS HIGHEST(C) 25.0 23.0 29.0 32.0 37.0 43.0 42.0 40.0 37.0 36.0 31.0 29.0 43.0 DAY 14 8 26 8 30 12 17 24 1 19 15 3 DIF. BETWEEN (MAX.-MIN.) (C) 6.0 7.0 6.5 7.1 7.2 6.4 5.3 6.5 5.9 8.7 7.9 8.6 6.9 MEAN DAILY TEMP. (MDT) (C) 20.2 17.6 21.7 25.5 28.9 32.1 33.1 32.5 30.4 28.2 25.2 20.4 26.3 COOLING DEG. DAYS(BASE 21 0C) 6.5 0.0 35.5 136.5 244.0 332.0 374.5 355.5 283.0 224.5 125.0 21.0 2138.0 HEATING DEG. DAYS(BASE 18 0C) 1.0 31.5 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 11.5 44.0 DEWPOINT (MEAN C) 13.9 7.9 16.5 19.2 20.0 26.3 26.7 25.6 26.0 22.7 17.4 11.2 19.5 MIXING RATIO (G/KG) 10.13 7.07 11.87 14.13 14.94 22.22 22.96 21.49 21.71 17.74 12.95 8.92 15.51 VAPOUR PRESSURE (HPA) 16.28 11.41 18.97 22.42 23.59 34.46 35.46 33.39 33.92 28.03 20.67 14.36 24.41 SATURATION DEF. (HPA) 8.17 10.37 8.55 11.33 18.18 14.30 15.84 17.26 11.17 12.42 13.42 11.77 12.73 RELATIVE HUMIDITY (MEAN %) 67 52 70 67 58 72 70 67 76 70 61 54 65 RELATIVE HUMIDITY (MAX. %) 76 63 82 79 72 83 80 79 86 82 75 63 77 RELATIVE HUMIDITY (MIN. %) 58 44 60 56 44 62 62 57 66 57 51 46 55 RELATIVE HUMIDITY (MEAN% 03UTC) 73 60 75 73 67 79 75 75 80 75 70 59 72 RELATIVE HUMIDITY (MEAN% 09UTC) 63 46 67 62 56 70 66 62 71 67 56 50 61 RELATIVE HUMIDITY (MEAN% 15UTC) 67 55 74 75 60 72 76 70 80 75 66 56 69 RH=0 => RELATIVE HUMIDITY < 0.5% AMOUNT OF PRECIPITATION MM. 50.0 1.0 94.0 5.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 4.0 154.0 DAYS WITH PRECIPITATION >=10 2 0 4 0 0 0 0 0 0 0 0 0 6 DAYS WITH PRECIPITATION >= 5 2 0 4 1 0 0 0 0 0 0 0 0 7 DAYS WITH PRECIPITATION >= 1 2 1 4 1 0 0 0 0 0 0 0 1 9 DAYS WITH PRECIPITATION 3 1 4 1 0 0 0 0 0 0 0 2 11 GREATEST DAILY PRECIPITATION 38.0 1.0 51.0 5.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 4.0 51.0 DAY 19 3 14 25 ** ** ** ** ** ** ** 6 DAY WITH THUNDER STORM 2 0 0 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 3 3 3 3 8 2 2 4 1 3 1 0 33 WIND DIRECTION (PREVAILING) 90 135 270 270 270 180 135 135 135 270 225 270 270 PREVAILING WIND SPEED(KNOTS) 8.9 7.6 7.8 7.8 9.4 6.5 9.5 9.6 8.2 8.4 6.5 7.7 7.8 PREVAILING WIND PERCENT 21.3 17.2 32.9 48.0 56.1 27.3 26.5 21.3 41.3 32.3 22.0 29.7 25.0 CALMS PERCENT OF WIND 3.9 3.4 3.2 7.3 3.9 4.7 3.9 3.2 2.0 1.9 3.3 1.9 3.6 NO. OF WIND OBSERVATION 155 145 155 150 155 150 155 155 150 155 150 155 1830 VECTOR WIND DIRECTION (MEAN) 102 250 276 251 266 163 158 164 139 244 205 288 214 VECTOR WIND MAGNITUDE(KNOTS) 1.2 0.4 2.5 4.1 6.9 3.3 4.3 3.9 4.9 3.5 2.0 3.2 1.9 WIND STEADINESES (MEAN %) 22.2 5.6 35.2 61.2 87.3 50.0 57.3 49.4 62.8 56.5 33.9 50.8 27.5 WIND SPEED (MEAN KNOTS) 5.4 7.1 7.1 6.7 7.9 6.6 7.5 7.9 7.8 6.2 5.9 6.3 6.9 FASTEST WIND DIRECTION 110 270 90 280 270 120 90 120 150 250 270 300 270 FASTEST WIND SPEED (KNOTS) 20 25 25 15 20 22 22 25 20 18 20 20 25 DAY 18 21 14 4 16 16 21 1 9 1 15 25 DAYS WITH SKY CLEAR (0-2)/8 15 22 14 19 31 27 22 29 30 29 25 13 276 DAYS WITH P.CLOUDY (3-6)/8 13 5 11 8 0 3 7 2 0 2 5 17 73 DAYS WITH CLOUDY (7-8)/8 3 2 6 3 0 0 2 0 0 0 0 1 17 DAYS WITH VISIBILITY =< 2 KM 0 0 2 0 0 0 1 0 0 3 0 0 6 DURATION OF SUNSHINE HOURS ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION JASK (40893) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 25 38 N LONGITUDE 57 46 E DATA PROCESSING CENTER ELEVATION 5.2 M MEANS AND EXTREMES FOR THE YEAR 1972 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL MEAN QFE PRESSURE IN HPA 1016.7 1017.4 1013.7 1010.3 1005.9 999.8 997.0 1000.8 1006.5 1012.1 1015.2 1018.2 1009.5 MAX. QFE PRESSURE IN HPA 1022.9 1025.2 1019.9 1014.0 1012.4 1006.6 1004.5 1005.6 1012.8 1019.8 1021.1 1028.7 1028.7 DAY-HOUR 5- 6 25- 6 15- 9 28- 6 25- 6 5- 3 21- 6 15- 6 28- 6 28- 6 23- 6 27- 6 MIN. QFE PRESSURE IN HPA 1008.5 1010.5 1009.5 1005.4 1001.5 994.0 993.0 994.3 999.5 1007.7 1010.5 1012.6 993.0 DAY-HOUR 30-12 15-12 2-12 3-12 2-12 29-12 3-15 5-12 4- 3 16-12 15-12 18-12 MEAN QNH PRESSURE IN HPA 1017.0 1017.7 1014.0 1010.6 1006.2 1000.1 997.3 1001.1 1006.8 1012.4 1015.5 1018.5 1009.8 MAX. QNH PRESSURE IN HPA 1023.2 1025.5 1020.2 1014.3 1012.7 1006.9 1004.8 1005.9 1013.1 1020.1 1021.4 1029.0 1029.0 DAY-HOUR 5- 6 25- 6 15- 9 28- 6 25- 6 5- 3 21- 6 15- 6 28- 6 28- 6 23- 6 27- 6 MIN. QNH PRESSURE IN HPA 1008.8 1010.8 1009.8 1005.7 1001.8 994.3 993.3 994.6 999.8 1008.0 1010.8 1012.9 993.3 DAY-HOUR 30-12 15-12 2-12 3-12 2-12 29-12 3-15 5-12 4- 3 16-12 15-12 18-12 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 1017.1 1017.8 1013.8 1010.3 1006.2 1000.5 997.5 1001.2 1006.8 1012.7 1015.7 1018.6 1009.8 MAX. QFE PRESSURE IN HPA 1022.6 1023.1 1017.6 1012.5 1010.5 1006.6 1002.1 1004.7 1011.6 1018.5 1019.7 1027.0 1027.0 DAY 9 25 16 28 25 5 21 30 28 28 23 27 MIN. QFE PRESSURE IN HPA 1008.8 1012.1 1010.5 1007.2 1003.3 996.8 994.4 996.8 999.5 1009.3 1012.5 1013.8 994.4 DAY 30 15 9 3 2 25 7 1 4 9 15 18 MEAN QNH PRESSURE IN HPA 1017.4 1018.1 1014.1 1010.6 1006.5 1000.8 997.8 1001.5 1007.1 1013.0 1016.0 1018.9 1010.2 MAX. QNH PRESSURE IN HPA 1022.9 1023.4 1017.9 1012.8 1010.8 1006.9 1002.4 1005.0 1011.9 1018.8 1020.0 1027.3 1027.3 DAY 9 25 16 28 25 5 21 30 28 28 23 27 MIN. QNH PRESSURE IN HPA 1009.1 1012.4 1010.8 1007.5 1003.6 997.1 994.7 997.1 999.8 1009.6 1012.8 1014.1 994.7 DAY 30 15 9 3 2 25 7 1 4 9 15 18 MEAN QFF PRESSURE IN HPA 1017.7 1018.4 1014.4 1010.9 1006.8 1001.0 998.1 1001.8 1007.4 1013.3 1016.3 1019.2 1010.4 MAX. QFF PRESSURE IN HPA 1023.2 1023.7 1018.2 1013.1 1011.1 1007.2 1002.7 1005.3 1012.2 1019.1 1020.3 1027.6 1027.6 DAY 9 25 16 28 25 5 21 30 28 28 23 27 MIN. QFF PRESSURE IN HPA 1009.4 1012.7 1011.1 1007.8 1003.9 997.4 995.0 997.4 1000.1 1009.9 1013.1 1014.4 995.0 DAY 30 15 9 3 2 25 7 1 4 9 15 18 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION JASK (40893) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 25 38 N LONGITUDE 57 46 E DATA PROCESSING CENTER ELEVATION 5.2 M MEANS AND EXTREMES FOR THE YEAR 1972 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 0600 UTC. MEAN QFE PRESSURE IN HPA 1018.2 1019.4 1015.3 1011.9 1007.3 1001.0 998.4 1002.2 1008.3 1013.9 1017.0 1020.1 1011.1 MAX. QFE PRESSURE IN HPA 1022.9 1025.2 1019.6 1014.0 1012.4 1005.9 1004.5 1005.6 1012.8 1019.8 1021.1 1028.7 1028.7 DAY 5 25 16 28 25 2 21 15 28 28 23 27 MIN. QFE PRESSURE IN HPA 1010.5 1013.4 1012.6 1009.8 1004.1 996.5 995.4 997.6 1002.1 1010.6 1014.0 1015.9 995.4 DAY 30 15 25 15 2 30 7 1 4 17 15 18 MEAN QNH PRESSURE IN HPA 1018.6 1019.7 1015.6 1012.2 1007.6 1001.4 998.7 1002.5 1008.6 1014.2 1017.4 1020.4 1011.4 MAX. QNH PRESSURE IN HPA 1023.2 1025.5 1019.9 1014.3 1012.7 1006.2 1004.8 1005.9 1013.1 1020.1 1021.4 1029.0 1029.0 DAY 5 25 16 28 25 2 21 15 28 28 23 27 MIN. QNH PRESSURE IN HPA 1010.8 1013.7 1012.9 1010.1 1004.4 996.8 995.7 997.9 1002.4 1010.9 1014.3 1016.2 995.7 DAY 30 15 25 15 2 30 7 1 4 17 15 18 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 1016.6 1017.5 1014.0 1010.9 1006.3 1000.5 997.5 1001.3 1006.9 1012.0 1015.0 1018.2 1009.7 MAX. QFE PRESSURE IN HPA 1021.9 1023.1 1019.9 1013.4 1011.6 1005.9 1001.8 1005.1 1011.1 1017.4 1019.3 1026.6 1026.6 DAY 1 25 15 11 25 2 21 30 28 28 23 27 MIN. QFE PRESSURE IN HPA 1009.8 1011.0 1010.9 1007.7 1003.4 996.3 995.1 996.8 1001.1 1008.6 1011.5 1013.7 995.1 DAY 30 15 2 3 2 30 6 6 4 17 15 18 MEAN QNH PRESSURE IN HPA 1016.9 1017.8 1014.3 1011.2 1006.7 1000.8 997.8 1001.6 1007.2 1012.3 1015.3 1018.5 1010.0 MAX. QNH PRESSURE IN HPA 1022.2 1023.4 1020.2 1013.7 1011.9 1006.2 1002.1 1005.4 1011.4 1017.7 1019.6 1026.9 1026.9 DAY 1 25 15 11 25 2 21 30 28 28 23 27 MIN. QNH PRESSURE IN HPA 1010.1 1011.3 1011.2 1008.0 1003.7 996.6 995.4 997.1 1001.4 1008.9 1011.8 1014.0 995.4 DAY 30 15 2 3 2 30 6 6 4 17 15 18 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 1015.6 1015.9 1012.5 1009.1 1004.9 998.7 995.8 999.5 1005.1 1010.7 1013.8 1016.8 1008.2 MAX. QFE PRESSURE IN HPA 1020.7 1021.8 1018.2 1011.8 1010.4 1004.1 999.8 1003.7 1009.7 1016.1 1017.7 1024.6 1024.6 DAY 1 25 15 11 25 2 21 30 30 28 23 27 MIN. QFE PRESSURE IN HPA 1008.5 1010.5 1009.5 1005.4 1001.5 994.0 993.1 994.3 999.5 1007.7 1010.5 1012.6 993.1 DAY 30 15 2 3 2 29 3 5 4 16 15 18 MEAN QNH PRESSURE IN HPA 1015.9 1016.2 1012.8 1009.4 1005.2 999.0 996.2 999.9 1005.4 1011.0 1014.2 1017.1 1008.5 MAX. QNH PRESSURE IN HPA 1021.0 1022.1 1018.5 1012.1 1010.7 1004.4 1000.1 1004.0 1010.0 1016.4 1018.0 1024.9 1024.9 DAY 1 25 15 11 25 2 21 30 30 28 23 27 MIN. QNH PRESSURE IN HPA 1008.8 1010.8 1009.8 1005.7 1001.8 994.3 993.4 994.6 999.8 1008.0 1010.8 1012.9 993.4 DAY 30 15 2 3 2 29 3 5 4 16 15 18 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION JASK (40893) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 25 38 N LONGITUDE 57 46 E DATA PROCESSING CENTER ELEVATION 5.2 M MEANS AND EXTREMES FOR THE YEAR 1972 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 1500 UTC. MEAN QFE PRESSURE IN HPA 1016.1 1016.5 1013.0 1009.4 1005.0 998.6 995.9 999.8 1005.6 1011.1 1014.5 1017.5 1008.6 MAX. QFE PRESSURE IN HPA 1019.9 1021.9 1018.9 1011.9 1010.0 1004.0 999.8 1003.7 1010.4 1016.4 1019.0 1025.1 1025.1 DAY 1 24 15 11 25 2 21 29 28 26 30 27 MIN. QFE PRESSURE IN HPA 1009.8 1011.1 1009.7 1006.5 1002.3 994.2 993.0 994.5 999.5 1008.0 1011.2 1013.7 993.0 DAY 29 15 25 3 28 29 3 5 4 16 16 17 MEAN QNH PRESSURE IN HPA 1016.4 1016.8 1013.4 1009.8 1005.3 998.9 996.2 1000.1 1005.9 1011.4 1014.8 1017.9 1008.9 MAX. QNH PRESSURE IN HPA 1020.2 1022.2 1019.2 1012.2 1010.3 1004.3 1000.1 1004.0 1010.7 1016.7 1019.3 1025.4 1025.4 DAY 1 24 15 11 25 2 21 29 28 26 30 27 MIN. QNH PRESSURE IN HPA 1010.1 1011.4 1010.0 1006.8 1002.6 994.5 993.3 994.8 999.8 1008.3 1011.5 1014.0 993.3 DAY 29 15 25 3 28 29 3 5 4 16 16 17 MEAN QFF PRESSURE IN HPA 1016.7 1017.1 1013.6 1010.0 1005.6 999.1 996.4 1000.3 1006.2 1011.6 1015.1 1018.1 1009.2 MAX. QFF PRESSURE IN HPA 1020.5 1022.5 1019.5 1012.5 1010.6 1004.6 1000.4 1004.3 1011.0 1017.0 1019.6 1025.7 1025.7 DAY 1 24 15 11 25 2 21 29 30 27 30 27 MIN. QFF PRESSURE IN HPA 1010.4 1011.7 1010.3 1007.1 1002.9 994.8 993.6 995.1 1000.1 1008.6 1011.8 1014.3 993.6 DAY 29 15 25 3 28 29 3 5 4 16 16 17 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 JASK (40893) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 25 38 N LONGITUDE 57 46 E DATA PROCESSING CENTER ELEVATION 5.2 M MEANS AND EXTREMES FOR THE YEAR 1973 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AIR TEMPERATURE (C) 18.1 21.7 24.2 27.9 31.1 31.6 31.8 30.9 29.0 28.5 24.5 22.2 26.8 MINIMUN AIR TEMPERATURE (C) 13.0 17.2 20.0 23.6 26.8 28.8 29.6 28.7 26.1 23.5 19.4 16.7 22.8 DAYS WITH MINIMUM TEMP. >=21 0 0 16 28 31 30 31 31 30 27 7 0 231 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) 7.0 15.0 16.0 20.0 24.0 27.0 26.0 27.0 25.0 19.0 17.0 13.0 7.0 DAY 5 3 11 15 3 1 20 29 12 30 13 16 MAXIMUM AIR TEMPERATURE (C) 21.1 24.4 27.0 31.6 34.3 33.8 33.8 32.8 30.8 32.0 27.9 25.3 29.6 DAYS WITH MAXIMUM TEMP. >=30 0 0 6 22 30 30 31 31 27 30 5 0 212 DAYS WITH MAXIMUM TEMP. <= 0 0 0 0 0 0 0 0 0 0 0 0 0 0 TEMPERATURE RECORDS HIGHEST(C) 24.0 28.0 32.0 39.0 38.0 38.0 36.0 34.0 35.0 37.0 31.0 27.0 39.0 DAY 1 26 28 30 8 14 10 1 30 7 3 4 DIF. BETWEEN (MAX.-MIN.) (C) 8.1 7.2 7.0 8.0 7.5 5.0 4.2 4.1 4.7 8.5 8.5 8.6 6.8 MEAN DAILY TEMP. (MDT) (C) 17.0 20.8 23.5 27.6 30.5 31.3 31.7 30.8 28.4 27.8 23.6 21.0 26.2 COOLING DEG. DAYS(BASE 21 0C) 0.5 14.5 78.0 198.0 295.5 309.5 331.0 303.5 223.5 209.5 79.5 12.5 2055.5 HEATING DEG. DAYS(BASE 18 0C) 47.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 47.0 DEWPOINT (MEAN C) 8.1 15.0 15.6 18.6 22.8 26.3 26.6 26.1 24.4 20.1 15.1 10.6 19.1 MIXING RATIO (G/KG) 7.25 11.00 11.85 13.79 18.00 22.30 22.51 21.76 19.61 15.41 11.25 8.62 15.28 VAPOUR PRESSURE (HPA) 11.71 17.62 18.91 21.84 28.19 34.50 34.81 33.78 30.70 24.38 17.99 13.88 24.03 SATURATION DEF. (HPA) 9.47 8.56 11.54 16.23 17.33 12.12 12.26 10.91 9.51 15.01 13.22 13.14 12.44 RELATIVE HUMIDITY (MEAN %) 55 68 62 59 64 75 74 76 77 63 58 51 65 RELATIVE HUMIDITY (MAX. %) 66 79 74 74 78 83 81 84 87 79 71 64 77 RELATIVE HUMIDITY (MIN. %) 46 58 50 45 53 67 68 70 68 50 47 41 55 RELATIVE HUMIDITY (MEAN% 03UTC) 61 76 67 66 73 80 81 84 85 64 68 60 72 RELATIVE HUMIDITY (MEAN% 09UTC) 49 62 57 55 62 72 69 70 71 58 50 44 60 RELATIVE HUMIDITY (MEAN% 15UTC) 60 70 68 63 64 78 76 78 82 72 62 58 69 RH=0 => RELATIVE HUMIDITY < 0.5% AMOUNT OF PRECIPITATION MM. 36.0 0.0 0.0 0.0 0.0 0.0 6.0 0.0 0.0 0.0 0.0 0.0 42.0 DAYS WITH PRECIPITATION >=10 2 0 0 0 0 0 0 0 0 0 0 0 2 DAYS WITH PRECIPITATION >= 5 2 0 0 0 0 0 1 0 0 0 0 0 3 DAYS WITH PRECIPITATION >= 1 3 0 0 0 0 0 2 0 0 0 0 0 5 DAYS WITH PRECIPITATION 3 0 0 0 0 0 2 0 0 0 0 0 5 GREATEST DAILY PRECIPITATION 23.0 0.0 0.0 0.0 0.0 0.0 5.0 0.0 0.0 0.0 0.0 0.0 23.0 DAY 3 ** ** ** ** ** 20 ** ** ** ** ** DAY WITH THUNDER STORM 0 0 0 0 0 0 1 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 5 3 3 5 10 0 0 0 2 5 1 34 WIND DIRECTION (PREVAILING) 315 270 135 270 270 135 135 135 180 270 270 270 270 PREVAILING WIND SPEED(KNOTS) 7.2 9.3 9.1 10.4 9.7 11.3 10.6 10.8 6.6 6.8 8.3 7.9 9.2 PREVAILING WIND PERCENT 18.1 28.6 23.2 42.0 41.9 28.7 50.3 39.4 51.3 27.7 28.7 16.1 20.5 CALMS PERCENT OF WIND 0.0 4.3 3.2 6.7 9.0 2.7 3.2 0.0 1.3 4.5 4.7 3.9 3.6 NO. OF WIND OBSERVATION 155 140 155 150 155 150 155 155 150 155 150 155 1825 VECTOR WIND DIRECTION (MEAN) 338 267 190 255 249 177 136 137 144 221 262 211 187 VECTOR WIND MAGNITUDE(KNOTS) 1.5 1.7 2.6 5.8 4.6 4.5 7.7 7.8 5.8 2.5 3.3 0.9 2.4 WIND STEADINESES (MEAN %) 23.4 21.8 31.7 70.7 55.4 42.1 80.2 80.4 79.5 45.5 63.5 15.8 31.2 WIND SPEED (MEAN KNOTS) 6.4 7.8 8.2 8.2 8.3 10.7 9.6 9.7 7.3 5.5 5.2 5.7 7.7 FASTEST WIND DIRECTION 90 300 270 270 240 120 90 90 100 270 250 280 270 FASTEST WIND SPEED (KNOTS) 15 25 20 30 20 25 20 20 18 18 18 15 30 DAY 2 26 9 26 7 6 10 2 3 6 17 19 DAYS WITH SKY CLEAR (0-2)/8 21 23 24 23 31 28 13 22 28 31 30 28 302 DAYS WITH P.CLOUDY (3-6)/8 7 3 6 5 0 2 17 9 2 0 0 3 54 DAYS WITH CLOUDY (7-8)/8 3 0 0 1 0 0 1 0 0 0 0 0 5 DAYS WITH VISIBILITY =< 2 KM 2 5 2 2 3 7 0 0 0 5 1 0 27 DURATION OF SUNSHINE HOURS ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION JASK (40893) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 25 38 N LONGITUDE 57 46 E DATA PROCESSING CENTER ELEVATION 5.2 M MEANS AND EXTREMES FOR THE YEAR 1973 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL MEAN QFE PRESSURE IN HPA 1019.1 1015.2 1013.6 1008.2 1003.2 997.3 997.1 999.8 1005.0 1010.4 1014.9 1017.8 1008.5 MAX. QFE PRESSURE IN HPA 1027.7 1022.6 1023.4 1014.5 1007.7 1005.8 1004.5 1006.6 1011.2 1016.2 1022.0 1024.4 1027.7 DAY-HOUR 6- 6 8- 6 11- 6 1- 6 8- 6 3- 6 22- 6 9- 6 28- 6 30- 6 25- 6 25- 6 MIN. QFE PRESSURE IN HPA 1010.7 1008.1 1007.3 1002.2 996.3 988.7 987.8 994.3 999.8 997.3 1008.0 1010.1 987.8 DAY-HOUR 15-12 26-12 7- 9 30-12 29-15 17-12 5-15 12-15 1-15 11- 3 3- 9 7-12 MEAN QNH PRESSURE IN HPA 1019.4 1015.5 1014.0 1008.6 1003.6 997.6 997.5 1000.1 1005.3 1010.8 1015.2 1018.1 1008.8 MAX. QNH PRESSURE IN HPA 1028.0 1022.9 1023.7 1014.8 1008.0 1006.1 1004.8 1006.9 1011.5 1016.5 1022.3 1024.7 1028.0 DAY-HOUR 6- 6 8- 6 11- 6 1- 6 8- 6 3- 6 22- 6 9- 6 28- 6 30- 6 25- 6 25- 6 MIN. QNH PRESSURE IN HPA 1011.0 1008.4 1007.6 1002.5 996.6 989.0 988.1 994.6 1000.1 997.6 1008.3 1010.4 988.1 DAY-HOUR 15-12 26-12 7- 9 30-12 29-15 17-12 5-15 12-15 1-15 11- 3 3- 9 7-12 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY-HOUR **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY-HOUR **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** PRESSURE AT HOUR 0000 UTC. MEAN QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** PRESSURE AT HOUR 0300 UTC. MEAN QFE PRESSURE IN HPA 1019.7 1015.6 1013.7 1008.5 1003.6 997.8 997.6 1000.2 1005.3 1010.7 1015.4 1018.2 1008.9 MAX. QFE PRESSURE IN HPA 1025.3 1021.1 1022.5 1012.2 1006.8 1005.4 1003.5 1003.4 1010.1 1014.9 1019.9 1022.8 1025.3 DAY 6 9 11 1 8 3 22 11 29 31 25 26 MIN. QFE PRESSURE IN HPA 1013.5 1009.3 1008.4 1003.9 997.6 988.9 992.5 995.1 1002.1 997.3 1010.2 1012.6 988.9 DAY 16 26 30 23 30 16 9 13 9 11 3 7 MEAN QNH PRESSURE IN HPA 1020.1 1015.9 1014.0 1008.8 1003.9 998.2 997.9 1000.6 1005.7 1011.0 1015.7 1018.6 1009.2 MAX. QNH PRESSURE IN HPA 1025.6 1021.4 1022.8 1012.5 1007.1 1005.7 1003.8 1003.7 1010.4 1015.2 1020.2 1023.1 1025.6 DAY 6 9 11 1 8 3 22 11 29 31 25 26 MIN. QNH PRESSURE IN HPA 1013.8 1009.6 1008.7 1004.2 997.9 989.2 992.8 995.4 1002.4 997.6 1010.5 1012.9 989.2 DAY 16 26 30 23 30 16 9 13 9 11 3 7 MEAN QFF PRESSURE IN HPA 1020.4 1016.2 1014.3 1009.1 1004.2 998.4 998.1 1000.8 1005.9 1011.3 1016.0 1018.8 1009.5 MAX. QFF PRESSURE IN HPA 1025.9 1021.7 1023.1 1012.8 1007.4 1006.0 1004.1 1004.0 1010.7 1015.5 1020.5 1023.4 1025.9 DAY 6 9 11 1 8 3 22 11 29 31 25 26 MIN. QFF PRESSURE IN HPA 1014.1 1009.9 1009.0 1004.5 998.2 989.5 993.1 995.7 1002.7 997.9 1010.8 1013.2 989.5 DAY 16 26 30 23 30 16 9 13 9 11 3 7 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION JASK (40893) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 25 38 N LONGITUDE 57 46 E DATA PROCESSING CENTER ELEVATION 5.2 M MEANS AND EXTREMES FOR THE YEAR 1973 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 0600 UTC. MEAN QFE PRESSURE IN HPA 1021.0 1017.0 1015.3 1009.8 1004.7 998.6 998.5 1001.5 1006.8 1012.0 1016.5 1019.7 1010.1 MAX. QFE PRESSURE IN HPA 1027.7 1022.6 1023.4 1014.5 1007.7 1005.8 1004.5 1006.6 1011.2 1016.2 1022.0 1024.4 1027.7 DAY 6 8 11 1 8 3 22 9 28 30 25 25 MIN. QFE PRESSURE IN HPA 1014.8 1011.0 1009.0 1005.3 998.4 990.0 993.1 996.2 1003.9 998.8 1010.9 1013.7 990.0 DAY 15 26 8 29 30 16 9 13 9 11 3 7 MEAN QNH PRESSURE IN HPA 1021.4 1017.3 1015.7 1010.2 1005.0 998.9 998.8 1001.8 1007.1 1012.3 1016.8 1020.0 1010.4 MAX. QNH PRESSURE IN HPA 1028.0 1022.9 1023.7 1014.8 1008.0 1006.1 1004.8 1006.9 1011.5 1016.5 1022.3 1024.7 1028.0 DAY 6 8 11 1 8 3 22 9 28 30 25 25 MIN. QNH PRESSURE IN HPA 1015.1 1011.3 1009.3 1005.6 998.7 990.3 993.4 996.5 1004.2 999.1 1011.2 1014.0 990.3 DAY 15 26 8 29 30 16 9 13 9 11 3 7 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** PRESSURE AT HOUR 0900 UTC. MEAN QFE PRESSURE IN HPA 1018.8 1015.3 1014.0 1008.7 1003.8 997.6 997.5 1000.1 1005.4 1010.6 1014.7 1017.6 1008.7 MAX. QFE PRESSURE IN HPA 1025.0 1021.4 1021.5 1013.6 1006.6 1004.7 1003.9 1002.7 1010.5 1013.8 1020.3 1023.5 1025.0 DAY 6 7 11 17 25 3 22 29 29 30 25 25 MIN. QFE PRESSURE IN HPA 1012.1 1009.7 1007.3 1003.9 997.6 988.8 992.0 995.3 1002.2 1006.5 1008.0 1011.4 988.8 DAY 15 26 7 28 29 16 5 13 9 13 3 7 MEAN QNH PRESSURE IN HPA 1019.1 1015.6 1014.3 1009.0 1004.1 997.9 997.8 1000.4 1005.7 1010.9 1015.0 1017.9 1009.0 MAX. QNH PRESSURE IN HPA 1025.3 1021.7 1021.8 1013.9 1006.9 1005.0 1004.2 1003.0 1010.8 1014.1 1020.6 1023.8 1025.3 DAY 6 7 11 17 25 3 22 29 29 30 25 25 MIN. QNH PRESSURE IN HPA 1012.4 1010.0 1007.6 1004.2 997.9 989.1 992.3 995.6 1002.5 1006.8 1008.3 1011.7 989.1 DAY 15 26 7 28 29 16 5 13 9 13 3 7 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** PRESSURE AT HOUR 1200 UTC. MEAN QFE PRESSURE IN HPA 1017.7 1013.8 1012.2 1006.8 1002.1 996.1 995.9 998.5 1003.7 1009.2 1013.8 1016.3 1007.2 MAX. QFE PRESSURE IN HPA 1023.4 1020.7 1019.3 1012.1 1004.9 1003.0 1002.4 1001.0 1008.6 1012.5 1019.0 1021.6 1023.4 DAY 6 7 11 17 7 2 22 30 28 31 25 27 MIN. QFE PRESSURE IN HPA 1010.7 1008.1 1007.3 1002.2 996.4 988.7 990.0 994.4 1000.0 1005.1 1008.0 1010.1 988.7 DAY 15 26 8 30 29 17 5 13 1 13 3 7 MEAN QNH PRESSURE IN HPA 1018.0 1014.1 1012.6 1007.1 1002.4 996.4 996.3 998.9 1004.0 1009.6 1014.1 1016.6 1007.5 MAX. QNH PRESSURE IN HPA 1023.7 1021.0 1019.6 1012.4 1005.2 1003.3 1002.7 1001.3 1008.9 1012.8 1019.3 1021.9 1023.7 DAY 6 7 11 17 7 2 22 30 28 31 25 27 MIN. QNH PRESSURE IN HPA 1011.0 1008.4 1007.6 1002.5 996.7 989.0 990.3 994.7 1000.3 1005.4 1008.3 1010.4 989.0 DAY 15 26 8 30 29 17 5 13 1 13 3 7 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION JASK (40893) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 25 38 N LONGITUDE 57 46 E DATA PROCESSING CENTER ELEVATION 5.2 M MEANS AND EXTREMES FOR THE YEAR 1973 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 1500 UTC. MEAN QFE PRESSURE IN HPA 1018.3 1014.3 1013.0 1007.4 1002.2 996.3 996.3 998.5 1003.8 1009.8 1014.3 1017.2 1007.6 MAX. QFE PRESSURE IN HPA 1024.9 1021.2 1020.0 1011.4 1005.2 1004.0 1002.7 1001.2 1009.0 1013.2 1020.0 1022.2 1024.9 DAY 5 7 10 2 26 3 21 30 28 31 25 25 MIN. QFE PRESSURE IN HPA 1010.9 1009.2 1007.4 1002.6 996.3 989.5 987.8 994.3 999.8 1005.7 1008.1 1010.5 987.8 DAY 15 27 8 30 29 16 5 12 1 10 3 7 MEAN QNH PRESSURE IN HPA 1018.6 1014.6 1013.3 1007.7 1002.5 996.6 996.6 998.8 1004.1 1010.1 1014.6 1017.6 1007.9 MAX. QNH PRESSURE IN HPA 1025.2 1021.5 1020.3 1011.7 1005.5 1004.3 1003.0 1001.5 1009.3 1013.5 1020.3 1022.5 1025.2 DAY 5 7 10 2 26 3 21 30 28 31 25 25 MIN. QNH PRESSURE IN HPA 1011.2 1009.5 1007.7 1002.9 996.6 989.8 988.1 994.6 1000.1 1006.0 1008.4 1010.8 988.1 DAY 15 27 8 30 29 16 5 12 1 10 3 7 MEAN QFF PRESSURE IN HPA 1018.9 1014.9 1013.6 1008.0 1002.8 996.8 996.9 999.1 1004.4 1010.3 1014.9 1017.9 1008.2 MAX. QFF PRESSURE IN HPA 1025.5 1021.8 1020.6 1012.0 1005.8 1004.6 1003.3 1001.8 1009.6 1013.8 1020.6 1022.8 1025.5 DAY 5 7 10 2 26 3 21 30 28 31 25 25 MIN. QFF PRESSURE IN HPA 1011.5 1009.8 1008.0 1003.2 996.9 990.1 988.4 994.9 1000.4 1006.3 1008.7 1011.1 988.4 DAY 15 27 8 30 29 16 5 12 1 10 3 7 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 JASK (40893) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 25 38 N LONGITUDE 57 46 E DATA PROCESSING CENTER ELEVATION 5.2 M MEANS AND EXTREMES FOR THE YEAR 1974 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AIR TEMPERATURE (C) 20.1 19.6 24.7 26.3 29.7 32.0 32.9 31.8 31.1 28.9 25.4 22.0 27.1 MINIMUN AIR TEMPERATURE (C) 15.5 14.7 21.1 22.4 25.8 28.3 29.8 29.3 27.9 23.3 19.2 17.3 22.9 DAYS WITH MINIMUM TEMP. >=21 1 0 16 27 31 30 31 31 30 27 8 1 233 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) 11.0 11.0 18.0 19.0 23.0 26.0 27.0 28.0 25.0 20.0 16.0 14.0 11.0 DAY 26 7 1 9 4 11 13 2 28 18 24 31 MAXIMUM AIR TEMPERATURE (C) 23.0 22.3 27.6 29.0 32.7 35.0 35.1 33.7 33.1 32.2 28.5 24.7 29.7 DAYS WITH MAXIMUM TEMP. >=30 0 0 8 10 30 30 31 31 30 31 5 0 206 DAYS WITH MAXIMUM TEMP. <= 0 0 0 0 0 0 0 0 0 0 0 0 0 0 TEMPERATURE RECORDS HIGHEST(C) 26.0 24.0 33.0 34.0 37.0 42.0 40.0 35.0 35.0 35.0 32.0 27.0 42.0 DAY 3 10 20 26 26 3 25 4 23 7 1 1 DIF. BETWEEN (MAX.-MIN.) (C) 7.5 7.6 6.5 6.6 6.9 6.7 5.3 4.4 5.2 8.9 9.3 7.4 6.8 MEAN DAILY TEMP. (MDT) (C) 19.2 18.5 24.3 25.7 29.2 31.6 32.5 31.5 30.5 27.7 23.8 21.0 26.3 COOLING DEG. DAYS(BASE 21 0C) 3.5 0.0 103.5 141.5 255.5 318.5 356.0 326.0 285.0 209.0 84.5 15.0 2098.0 HEATING DEG. DAYS(BASE 18 0C) 8.5 11.5 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 20.0 DEWPOINT (MEAN C) 9.9 10.6 16.1 20.3 21.8 24.6 26.0 26.9 25.6 15.5 16.8 14.5 19.0 MIXING RATIO (G/KG) 8.19 8.37 11.60 15.25 16.90 20.31 21.99 22.88 21.13 11.81 12.37 10.64 15.12 VAPOUR PRESSURE (HPA) 13.17 13.48 18.54 24.11 26.54 31.55 33.97 35.43 33.01 18.80 19.77 17.09 23.79 SATURATION DEF. (HPA) 10.67 9.57 12.98 10.48 15.66 16.42 16.44 11.76 12.29 21.42 12.93 9.58 13.35 RELATIVE HUMIDITY (MEAN %) 55 58 60 71 65 68 69 75 73 47 61 65 64 RELATIVE HUMIDITY (MAX. %) 66 69 71 82 75 78 79 85 84 62 76 75 75 RELATIVE HUMIDITY (MIN. %) 45 49 51 60 55 59 58 69 66 35 46 55 54 RELATIVE HUMIDITY (MEAN% 03UTC) 57 65 66 78 71 77 75 84 83 47 60 74 70 RELATIVE HUMIDITY (MEAN% 09UTC) 48 52 54 66 63 65 65 71 67 41 56 58 59 RELATIVE HUMIDITY (MEAN% 15UTC) 61 62 66 74 67 67 71 77 76 59 71 67 68 RH=0 => RELATIVE HUMIDITY < 0.5% AMOUNT OF PRECIPITATION MM. 26.0 43.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 46.0 115.0 DAYS WITH PRECIPITATION >=10 1 1 0 0 0 0 0 0 0 0 0 3 5 DAYS WITH PRECIPITATION >= 5 2 3 0 0 0 0 0 0 0 0 0 3 8 DAYS WITH PRECIPITATION >= 1 5 3 0 0 0 0 0 0 0 0 0 3 11 DAYS WITH PRECIPITATION 5 3 2 0 0 0 0 0 0 0 0 3 13 GREATEST DAILY PRECIPITATION 12.0 31.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 23.0 31.0 DAY 23 19 ** ** ** ** ** ** ** ** ** 11 DAY WITH THUNDER STORM 1 0 0 1 0 0 0 0 0 1 0 1 4 DAYS WITH SNOW OR SLEET 0 0 0 0 0 0 0 0 0 0 0 0 0 DAYS WITH DUST 4 0 1 5 10 14 13 2 5 5 3 1 63 WIND DIRECTION (PREVAILING) 315 90 270 270 270 270 135 135 135 270 270 270 270 PREVAILING WIND SPEED(KNOTS) 9.5 9.5 8.9 10.8 10.0 9.1 9.4 9.0 10.3 9.0 8.5 9.6 9.5 PREVAILING WIND PERCENT 22.6 21.4 41.3 27.3 39.4 24.0 25.2 43.2 33.3 19.4 34.0 18.1 22.2 CALMS PERCENT OF WIND 0.6 2.9 1.3 2.7 0.6 0.7 1.9 5.2 2.7 0.0 0.0 0.6 1.6 NO. OF WIND OBSERVATION 155 140 155 150 155 150 155 155 150 155 150 155 1825 VECTOR WIND DIRECTION (MEAN) 321 85 262 221 249 179 185 137 150 211 241 173 196 VECTOR WIND MAGNITUDE(KNOTS) 0.8 1.2 4.7 2.9 4.3 3.1 3.0 6.2 6.0 3.0 3.2 0.3 2.1 WIND STEADINESES (MEAN %) 11.3 17.4 61.8 31.9 49.4 35.2 33.0 72.9 63.8 39.0 43.8 3.7 25.6 WIND SPEED (MEAN KNOTS) 7.1 6.9 7.6 9.1 8.7 8.8 9.1 8.5 9.4 7.7 7.3 8.0 8.2 FASTEST WIND DIRECTION 270 300 310 280 300 120 90 110 120 130 120 110 270 FASTEST WIND SPEED (KNOTS) 30 22 30 25 20 25 20 25 20 20 18 20 30 DAY 25 21 31 13 9 26 5 16 11 1 19 12 DAYS WITH SKY CLEAR (0-2)/8 15 14 13 23 27 29 27 28 27 31 28 16 278 DAYS WITH P.CLOUDY (3-6)/8 12 12 15 7 4 1 3 3 3 0 2 15 77 DAYS WITH CLOUDY (7-8)/8 4 2 3 0 0 0 0 0 0 0 0 0 9 DAYS WITH VISIBILITY =< 2 KM 5 2 2 3 4 4 4 1 1 0 0 0 26 DURATION OF SUNSHINE HOURS ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION JASK (40893) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 25 38 N LONGITUDE 57 46 E DATA PROCESSING CENTER ELEVATION 5.2 M MEANS AND EXTREMES FOR THE YEAR 1974 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL MEAN QFE PRESSURE IN HPA 1016.3 1017.0 1013.2 1008.6 1004.6 999.1 995.6 998.7 1004.8 1011.1 1015.6 1017.5 1008.5 MAX. QFE PRESSURE IN HPA 1024.9 1023.5 1019.3 1013.8 1010.9 1005.6 1000.5 1003.7 1009.2 1016.0 1022.5 1024.6 1024.9 DAY-HOUR 26- 6 5- 6 8- 6 15- 6 3- 6 27- 6 29- 6 21- 6 19- 6 15- 6 18- 6 21- 6 MIN. QFE PRESSURE IN HPA 1008.1 1011.4 1005.5 1003.1 996.1 993.5 988.6 993.5 999.9 1006.0 1010.4 1010.0 988.6 DAY-HOUR 18-12 1- 3 22-12 29-12 31-12 20-12 3-15 11-15 1-12 3-15 8-12 1-12 MEAN QNH PRESSURE IN HPA 1016.7 1017.4 1013.5 1009.0 1004.9 999.4 995.9 999.0 1005.1 1011.4 1016.0 1017.8 1008.8 MAX. QNH PRESSURE IN HPA 1025.2 1023.8 1019.6 1014.1 1011.2 1005.9 1000.8 1004.0 1009.5 1016.3 1022.8 1024.9 1025.2 DAY-HOUR 26- 6 5- 6 8- 6 15- 6 3- 6 27- 6 29- 6 21- 6 19- 6 15- 6 18- 6 21- 6 MIN. QNH PRESSURE IN HPA 1008.4 1011.7 1005.8 1003.4 996.4 993.8 988.9 993.8 1000.2 1006.3 1010.7 1010.3 988.9 DAY-HOUR 18-12 1- 3 22-12 29-12 31-12 20-12 3-15 11-15 1-12 3-15 8-12 1-12 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 1016.5 1016.9 1013.3 1008.9 1005.0 999.4 996.1 999.2 1005.1 1011.4 1015.9 1017.6 1008.8 MAX. QFE PRESSURE IN HPA 1022.9 1021.5 1018.1 1012.6 1009.7 1004.8 999.5 1002.5 1007.5 1015.1 1020.8 1023.3 1023.3 DAY 26 5 9 16 8 28 23 24 13 15 18 21 MIN. QFE PRESSURE IN HPA 1010.5 1011.4 1007.7 1004.8 997.1 996.1 991.9 996.3 1000.6 1007.3 1012.2 1012.2 991.9 DAY 18 1 25 29 27 3 3 12 1 4 8 1 MEAN QNH PRESSURE IN HPA 1016.8 1017.2 1013.6 1009.2 1005.3 999.7 996.4 999.5 1005.5 1011.7 1016.2 1017.9 1009.1 MAX. QNH PRESSURE IN HPA 1023.2 1021.8 1018.4 1012.9 1010.0 1005.1 999.8 1002.8 1007.8 1015.4 1021.1 1023.6 1023.6 DAY 26 5 9 16 8 28 23 24 13 15 18 21 MIN. QNH PRESSURE IN HPA 1010.8 1011.7 1008.0 1005.1 997.4 996.4 992.2 996.6 1000.9 1007.6 1012.5 1012.5 992.2 DAY 18 1 25 29 27 3 3 12 1 4 8 1 MEAN QFF PRESSURE IN HPA 1017.1 1017.5 1013.9 1009.5 1005.6 999.9 996.7 999.8 1005.7 1012.0 1016.5 1018.2 1009.4 MAX. QFF PRESSURE IN HPA 1023.5 1022.1 1018.7 1013.2 1010.3 1005.4 1000.1 1003.1 1008.1 1015.7 1021.4 1023.9 1023.9 DAY 26 5 9 16 8 28 23 24 18 15 18 21 MIN. QFF PRESSURE IN HPA 1011.1 1012.0 1008.3 1005.4 997.7 996.7 992.5 996.9 1001.2 1007.9 1012.8 1012.8 992.5 DAY 18 1 25 29 27 3 3 15 1 4 8 1 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION JASK (40893) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 25 38 N LONGITUDE 57 46 E DATA PROCESSING CENTER ELEVATION 5.2 M MEANS AND EXTREMES FOR THE YEAR 1974 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 0600 UTC. MEAN QFE PRESSURE IN HPA 1018.3 1018.8 1014.9 1010.2 1006.2 1000.6 997.1 1000.4 1006.7 1012.9 1017.5 1019.3 1010.2 MAX. QFE PRESSURE IN HPA 1024.9 1023.5 1019.3 1013.8 1010.9 1005.6 1000.5 1003.7 1009.2 1016.0 1022.5 1024.6 1024.9 DAY 26 5 8 15 3 27 29 21 19 15 18 21 MIN. QFE PRESSURE IN HPA 1011.5 1013.4 1009.5 1005.8 998.2 996.1 992.6 996.5 1002.5 1009.0 1013.7 1013.5 992.6 DAY 18 1 24 29 27 20 3 15 1 3 8 1 MEAN QNH PRESSURE IN HPA 1018.6 1019.1 1015.2 1010.6 1006.5 1000.9 997.4 1000.7 1007.0 1013.2 1017.8 1019.7 1010.6 MAX. QNH PRESSURE IN HPA 1025.2 1023.8 1019.6 1014.1 1011.2 1005.9 1000.8 1004.0 1009.5 1016.3 1022.8 1024.9 1025.2 DAY 26 5 8 15 3 27 29 21 19 15 18 21 MIN. QNH PRESSURE IN HPA 1011.8 1013.7 1009.8 1006.1 998.5 996.4 992.9 996.8 1002.8 1009.3 1014.0 1013.8 992.9 DAY 18 1 24 29 27 20 3 15 1 3 8 1 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 1016.3 1017.3 1013.4 1009.1 1005.1 999.7 996.1 999.1 1005.1 1011.3 1015.7 1017.3 1008.8 MAX. QFE PRESSURE IN HPA 1023.5 1021.6 1018.3 1012.7 1010.2 1004.6 999.5 1002.7 1007.7 1013.6 1020.7 1022.2 1023.5 DAY 26 5 9 4 3 27 28 21 13 14 21 21 MIN. QFE PRESSURE IN HPA 1010.0 1011.7 1007.5 1004.7 997.4 995.5 992.1 995.6 1001.9 1007.8 1012.5 1011.6 992.1 DAY 18 1 24 29 27 20 3 11 2 4 1 1 MEAN QNH PRESSURE IN HPA 1016.6 1017.7 1013.7 1009.5 1005.4 1000.0 996.4 999.4 1005.4 1011.6 1016.0 1017.6 1009.1 MAX. QNH PRESSURE IN HPA 1023.8 1021.9 1018.6 1013.0 1010.5 1004.9 999.8 1003.0 1008.0 1013.9 1021.0 1022.5 1023.8 DAY 26 5 9 4 3 27 28 21 13 14 21 21 MIN. QNH PRESSURE IN HPA 1010.3 1012.0 1007.8 1005.0 997.7 995.8 992.4 995.9 1002.2 1008.1 1012.8 1011.9 992.4 DAY 18 1 24 29 27 20 3 11 2 4 1 1 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 1015.0 1015.9 1011.9 1007.4 1003.3 998.1 994.4 997.4 1003.5 1009.9 1014.4 1016.5 1007.3 MAX. QFE PRESSURE IN HPA 1021.0 1020.4 1016.4 1012.7 1008.0 1003.2 997.9 1000.7 1006.1 1012.4 1019.3 1021.3 1021.3 DAY 26 5 8 5 3 27 22 23 13 14 20 21 MIN. QFE PRESSURE IN HPA 1008.1 1011.9 1005.5 1003.1 996.1 993.5 988.8 994.0 999.9 1006.5 1010.4 1010.0 988.8 DAY 18 1 22 29 31 20 3 15 1 3 8 1 MEAN QNH PRESSURE IN HPA 1015.4 1016.3 1012.2 1007.7 1003.6 998.4 994.7 997.8 1003.8 1010.2 1014.8 1016.9 1007.6 MAX. QNH PRESSURE IN HPA 1021.3 1020.7 1016.7 1013.0 1008.3 1003.5 998.2 1001.0 1006.4 1012.7 1019.6 1021.6 1021.6 DAY 26 5 8 5 3 27 22 23 13 14 20 21 MIN. QNH PRESSURE IN HPA 1008.4 1012.2 1005.8 1003.4 996.4 993.8 989.1 994.3 1000.2 1006.8 1010.7 1010.3 989.1 DAY 18 1 22 29 31 20 3 15 1 3 8 1 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION JASK (40893) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 25 38 N LONGITUDE 57 46 E DATA PROCESSING CENTER ELEVATION 5.2 M MEANS AND EXTREMES FOR THE YEAR 1974 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 1500 UTC. MEAN QFE PRESSURE IN HPA 1015.7 1016.3 1012.4 1007.6 1003.5 997.8 994.4 997.4 1003.5 1010.2 1014.8 1016.9 1007.5 MAX. QFE PRESSURE IN HPA 1020.8 1020.8 1018.3 1012.8 1008.2 1003.9 998.0 1000.9 1006.2 1013.4 1019.1 1021.5 1021.5 DAY 25 5 8 5 8 27 22 23 13 14 18 21 MIN. QFE PRESSURE IN HPA 1009.1 1012.7 1006.2 1003.4 996.3 993.9 988.6 993.5 1000.5 1006.0 1010.8 1011.0 988.6 DAY 18 1 22 29 31 20 3 11 1 3 8 1 MEAN QNH PRESSURE IN HPA 1016.0 1016.6 1012.7 1007.9 1003.8 998.1 994.7 997.7 1003.8 1010.5 1015.1 1017.2 1007.9 MAX. QNH PRESSURE IN HPA 1021.1 1021.1 1018.6 1013.1 1008.5 1004.2 998.3 1001.2 1006.5 1013.7 1019.4 1021.8 1021.8 DAY 25 5 8 5 8 27 22 23 13 14 18 21 MIN. QNH PRESSURE IN HPA 1009.4 1013.0 1006.5 1003.7 996.6 994.2 988.9 993.8 1000.8 1006.3 1011.1 1011.3 988.9 DAY 18 1 22 29 31 20 3 11 1 3 8 1 MEAN QFF PRESSURE IN HPA 1016.3 1016.9 1013.0 1008.2 1004.1 998.3 995.0 998.0 1004.1 1010.8 1015.4 1017.5 1008.1 MAX. QFF PRESSURE IN HPA 1021.4 1021.4 1018.9 1013.4 1008.8 1004.5 998.6 1001.5 1006.8 1014.0 1019.7 1022.1 1022.1 DAY 25 5 8 5 8 27 22 23 13 14 18 21 MIN. QFF PRESSURE IN HPA 1009.7 1013.3 1006.8 1004.0 996.9 994.5 989.2 994.1 1001.1 1006.6 1011.4 1011.6 989.2 DAY 18 1 22 29 31 20 3 11 1 3 8 1 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 JASK (40893) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 25 38 N LONGITUDE 57 46 E DATA PROCESSING CENTER ELEVATION 5.2 M MEANS AND EXTREMES FOR THE YEAR 1975 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AIR TEMPERATURE (C) 20.5 20.8 23.5 27.1 31.1 33.1 31.8 31.4 31.2 29.5 25.1 22.6 27.3 MINIMUN AIR TEMPERATURE (C) 15.8 17.1 19.1 23.0 26.6 29.5 30.0 29.4 27.1 24.1 20.3 17.8 23.3 DAYS WITH MINIMUM TEMP. >=21 0 0 11 28 31 30 31 31 30 28 11 3 234 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) 12.0 14.0 15.0 18.0 22.0 27.0 29.0 28.0 24.0 20.0 18.0 14.0 12.0 DAY 16 14 7 7 1 2 7 17 27 27 11 27 MAXIMUM AIR TEMPERATURE (C) 23.4 23.3 25.9 30.1 34.5 35.9 33.0 33.5 33.8 33.1 28.2 26.0 30.0 DAYS WITH MAXIMUM TEMP. >=30 0 0 1 17 31 29 31 31 30 29 6 0 205 DAYS WITH MAXIMUM TEMP. <= 0 0 0 0 0 0 0 0 0 0 0 0 0 0 TEMPERATURE RECORDS HIGHEST(C) 25.0 28.0 30.0 35.0 41.0 41.0 35.0 38.0 38.0 38.0 31.0 29.0 41.0 DAY 2 28 31 17 22 1 28 31 21 10 15 11 DIF. BETWEEN (MAX.-MIN.) (C) 7.6 6.2 6.8 7.1 7.9 6.4 3.0 4.1 6.7 9.0 7.9 8.2 6.7 MEAN DAILY TEMP. (MDT) (C) 19.6 20.2 22.5 26.6 30.5 32.7 31.5 31.4 30.4 28.6 24.2 21.9 26.7 COOLING DEG. DAYS(BASE 21 0C) 3.5 8.5 54.5 167.0 296.0 338.0 325.5 323.0 283.5 235.0 97.0 34.5 2166.0 HEATING DEG. DAYS(BASE 18 0C) 3.5 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 3.5 DEWPOINT (MEAN C) 12.1 13.1 15.2 17.1 23.0 25.6 26.3 26.0 24.6 18.3 16.6 12.7 19.2 MIXING RATIO (G/KG) 9.44 9.74 11.18 12.65 18.32 21.58 22.10 21.86 20.04 14.42 12.21 9.71 15.27 VAPOUR PRESSURE (HPA) 15.19 15.65 17.86 20.10 28.70 33.41 34.25 33.88 31.31 22.77 19.52 15.61 24.02 SATURATION DEF. (HPA) 9.20 9.03 11.42 16.02 17.09 17.41 12.76 12.43 14.42 19.03 12.63 12.08 13.63 RELATIVE HUMIDITY (MEAN %) 62 64 61 56 65 67 73 74 70 55 61 57 64 RELATIVE HUMIDITY (MAX. %) 72 73 74 70 79 79 80 83 81 69 76 71 76 RELATIVE HUMIDITY (MIN. %) 52 55 49 45 53 55 67 67 59 43 50 46 53 RELATIVE HUMIDITY (MEAN% 03UTC) 66 71 68 61 71 71 78 80 77 58 69 63 69 RELATIVE HUMIDITY (MEAN% 09UTC) 55 58 55 51 61 65 69 68 65 52 55 49 59 RELATIVE HUMIDITY (MEAN% 15UTC) 69 67 66 63 70 71 78 79 76 64 70 64 70 RH=0 => RELATIVE HUMIDITY < 0.5% AMOUNT OF PRECIPITATION MM. 52.0 64.0 2.0 0.0 0.0 0.0 0.0 2.0 0.0 0.0 0.0 0.0 120.0 DAYS WITH PRECIPITATION >=10 1 4 0 0 0 0 0 0 0 0 0 0 5 DAYS WITH PRECIPITATION >= 5 2 5 0 0 0 0 0 0 0 0 0 0 7 DAYS WITH PRECIPITATION >= 1 3 5 1 0 0 0 0 2 0 0 0 0 11 DAYS WITH PRECIPITATION 3 5 1 0 0 0 0 2 0 0 0 0 11 GREATEST DAILY PRECIPITATION 43.0 20.0 2.0 0.0 0.0 0.0 0.0 1.0 0.0 0.0 0.0 0.0 43.0 DAY 28 3 20 ** ** ** ** 18 ** ** ** ** DAY WITH THUNDER STORM 0 1 1 0 0 0 0 0 0 0 0 0 2 DAYS WITH SNOW OR SLEET 0 0 0 0 0 0 0 0 0 0 0 0 0 DAYS WITH DUST 3 1 5 4 0 3 11 20 6 2 1 2 58 WIND DIRECTION (PREVAILING) 315 270 270 270 135 135 135 135 135 270 225 270 135 PREVAILING WIND SPEED(KNOTS) 6.8 11.1 11.8 10.4 8.8 10.5 13.0 9.8 9.9 8.2 5.8 8.4 10.0 PREVAILING WIND PERCENT 20.6 24.3 25.8 51.3 24.5 27.3 60.0 38.7 32.0 23.9 18.0 15.5 20.4 CALMS PERCENT OF WIND 0.0 0.7 1.9 0.0 15.5 12.7 2.6 9.0 10.0 11.6 20.7 16.8 8.5 NO. OF WIND OBSERVATION 155 140 155 150 155 150 155 155 150 155 150 155 1825 VECTOR WIND DIRECTION (MEAN) 63 264 229 260 200 190 129 133 141 242 204 270 186 VECTOR WIND MAGNITUDE(KNOTS) 0.2 2.0 3.1 6.9 2.4 2.4 9.3 6.1 4.6 3.1 1.5 1.6 2.0 WIND STEADINESES (MEAN %) 2.2 26.0 34.4 74.2 35.3 28.6 80.9 74.4 60.5 48.4 37.5 32.7 26.0 WIND SPEED (MEAN KNOTS) 8.9 7.7 9.0 9.3 6.8 8.4 11.5 8.2 7.6 6.4 4.0 4.9 7.7 FASTEST WIND DIRECTION 110 270 260 360 240 60 120 120 90 270 270 270 270 FASTEST WIND SPEED (KNOTS) 25 30 20 25 20 28 22 20 22 20 20 20 30 DAY 24 12 4 23 1 17 22 14 10 30 14 11 DAYS WITH SKY CLEAR (0-2)/8 20 16 23 17 31 30 30 26 28 31 30 20 302 DAYS WITH P.CLOUDY (3-6)/8 6 6 8 11 0 0 1 4 2 0 0 10 48 DAYS WITH CLOUDY (7-8)/8 5 6 0 2 0 0 0 1 0 0 0 1 15 DAYS WITH VISIBILITY =< 2 KM 0 2 1 1 0 2 0 5 8 1 0 0 20 DURATION OF SUNSHINE HOURS ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION JASK (40893) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 25 38 N LONGITUDE 57 46 E DATA PROCESSING CENTER ELEVATION 5.2 M MEANS AND EXTREMES FOR THE YEAR 1975 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL MEAN QFE PRESSURE IN HPA 1017.9 1016.5 1013.3 1009.7 1004.0 997.4 998.4 998.3 1004.0 1009.2 1015.4 1017.3 1008.4 MAX. QFE PRESSURE IN HPA 1025.0 1023.4 1019.7 1017.3 1009.6 1004.1 1005.3 1005.3 1011.3 1019.0 1021.1 1023.4 1025.0 DAY-HOUR 16- 6 19- 6 10- 6 7- 6 6- 6 6- 6 26- 6 26- 6 18- 6 28- 6 21- 6 21- 6 MIN. QFE PRESSURE IN HPA 1013.3 1010.5 1008.2 1004.4 995.9 989.8 991.9 990.8 998.2 1000.6 1009.7 1012.1 989.8 DAY-HOUR 7-12 11-12 26-15 24-15 31-15 19-15 8-12 13-12 8-12 3-15 4-12 3-12 MEAN QNH PRESSURE IN HPA 1018.2 1016.8 1013.7 1010.0 1004.4 997.7 998.7 998.6 1004.3 1009.6 1015.7 1017.6 1008.8 MAX. QNH PRESSURE IN HPA 1025.3 1023.7 1020.0 1017.6 1009.9 1004.4 1005.6 1005.6 1011.6 1019.3 1021.4 1023.7 1025.3 DAY-HOUR 16- 6 19- 6 10- 6 7- 6 6- 6 6- 6 26- 6 26- 6 18- 6 28- 6 21- 6 21- 6 MIN. QNH PRESSURE IN HPA 1013.6 1010.8 1008.5 1004.7 996.2 990.1 992.2 991.1 998.5 1000.9 1010.0 1012.4 990.1 DAY-HOUR 7-12 11-12 26-15 24-15 31-15 19-15 8-12 13-12 8-12 3-15 4-12 3-12 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 1018.0 1016.6 1013.5 1009.8 1004.7 997.9 999.1 998.9 1004.8 1009.7 1015.8 1017.5 1008.8 MAX. QFE PRESSURE IN HPA 1024.0 1021.0 1017.8 1016.1 1008.7 1003.9 1004.3 1004.6 1010.2 1018.0 1019.7 1021.4 1024.0 DAY 16 20 13 7 6 12 26 26 18 28 22 22 MIN. QFE PRESSURE IN HPA 1015.0 1011.8 1008.9 1005.8 999.1 992.9 993.9 993.9 1001.0 1003.1 1012.1 1013.3 992.9 DAY 24 12 9 20 24 20 9 4 8 4 4 3 MEAN QNH PRESSURE IN HPA 1018.3 1016.9 1013.8 1010.1 1005.0 998.3 999.4 999.2 1005.1 1010.0 1016.2 1017.8 1009.2 MAX. QNH PRESSURE IN HPA 1024.3 1021.3 1018.1 1016.4 1009.0 1004.2 1004.6 1004.9 1010.5 1018.3 1020.0 1021.7 1024.3 DAY 16 20 13 7 6 12 26 26 18 28 22 22 MIN. QNH PRESSURE IN HPA 1015.3 1012.1 1009.2 1006.1 999.4 993.2 994.2 994.2 1001.3 1003.4 1012.4 1013.6 993.2 DAY 24 12 9 20 24 20 9 4 8 4 4 3 MEAN QFF PRESSURE IN HPA 1018.6 1017.2 1014.1 1010.4 1005.3 998.5 999.6 999.4 1005.3 1010.3 1016.4 1018.1 1009.4 MAX. QFF PRESSURE IN HPA 1024.6 1021.6 1018.4 1016.7 1009.3 1004.5 1004.9 1005.2 1010.8 1018.6 1020.3 1022.0 1024.6 DAY 16 20 13 7 6 12 26 26 18 28 22 22 MIN. QFF PRESSURE IN HPA 1015.6 1012.4 1009.5 1006.4 999.7 993.5 994.5 994.5 1001.6 1003.7 1012.7 1013.9 993.5 DAY 24 12 9 20 24 20 9 4 8 4 4 3 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION JASK (40893) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 25 38 N LONGITUDE 57 46 E DATA PROCESSING CENTER ELEVATION 5.2 M MEANS AND EXTREMES FOR THE YEAR 1975 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 0600 UTC. MEAN QFE PRESSURE IN HPA 1019.8 1018.3 1015.3 1011.2 1005.6 998.9 1000.3 999.7 1005.7 1011.1 1017.4 1019.3 1010.2 MAX. QFE PRESSURE IN HPA 1025.0 1023.4 1019.7 1017.3 1009.6 1004.1 1005.3 1005.3 1011.3 1019.0 1021.1 1023.4 1025.0 DAY 16 19 10 7 6 6 26 26 18 28 21 21 MIN. QFE PRESSURE IN HPA 1016.6 1014.0 1010.6 1005.0 1000.1 993.9 995.9 993.8 1001.4 1004.6 1013.2 1014.4 993.8 DAY 13 6 9 20 31 19 8 13 9 4 29 3 MEAN QNH PRESSURE IN HPA 1020.1 1018.7 1015.6 1011.5 1005.9 999.2 1000.6 1000.1 1006.0 1011.4 1017.8 1019.6 1010.5 MAX. QNH PRESSURE IN HPA 1025.3 1023.7 1020.0 1017.6 1009.9 1004.4 1005.6 1005.6 1011.6 1019.3 1021.4 1023.7 1025.3 DAY 16 19 10 7 6 6 26 26 18 28 21 21 MIN. QNH PRESSURE IN HPA 1016.9 1014.3 1010.9 1005.3 1000.4 994.2 996.2 994.1 1001.7 1004.9 1013.5 1014.7 994.1 DAY 13 6 9 20 31 19 8 13 9 4 29 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 1017.6 1016.6 1013.7 1010.1 1004.6 998.1 998.8 998.6 1004.2 1009.2 1015.2 1017.0 1008.6 MAX. QFE PRESSURE IN HPA 1022.9 1021.8 1018.3 1016.0 1008.4 1003.9 1003.1 1004.0 1008.7 1016.7 1018.9 1021.2 1022.9 DAY 15 19 14 4 6 5 25 26 18 28 21 21 MIN. QFE PRESSURE IN HPA 1014.3 1012.5 1009.5 1006.2 998.9 991.8 994.9 992.8 1000.0 1002.3 1011.0 1012.8 991.8 DAY 7 11 9 25 31 19 8 13 9 3 29 3 MEAN QNH PRESSURE IN HPA 1017.9 1016.9 1014.1 1010.5 1004.9 998.4 999.1 998.9 1004.5 1009.5 1015.5 1017.3 1009.0 MAX. QNH PRESSURE IN HPA 1023.2 1022.1 1018.6 1016.3 1008.7 1004.2 1003.4 1004.3 1009.0 1017.0 1019.2 1021.5 1023.2 DAY 15 19 14 4 6 5 25 26 18 28 21 21 MIN. QNH PRESSURE IN HPA 1014.6 1012.8 1009.8 1006.5 999.2 992.1 995.2 993.1 1000.3 1002.6 1011.3 1013.1 992.1 DAY 7 11 9 25 31 19 8 13 9 3 29 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 1016.8 1015.3 1012.0 1008.5 1002.8 996.4 996.9 997.1 1002.6 1008.0 1013.9 1015.9 1007.2 MAX. QFE PRESSURE IN HPA 1022.1 1020.9 1016.5 1015.0 1006.4 1001.9 1001.1 1002.5 1007.2 1015.1 1018.7 1020.0 1022.1 DAY 15 19 13 4 6 5 25 26 17 28 22 21 MIN. QFE PRESSURE IN HPA 1013.3 1010.5 1008.4 1004.6 996.9 990.8 991.9 990.8 998.2 1001.3 1009.7 1012.1 990.8 DAY 7 11 9 24 31 19 8 13 8 4 4 3 MEAN QNH PRESSURE IN HPA 1017.1 1015.7 1012.3 1008.8 1003.1 996.7 997.2 997.4 1002.9 1008.3 1014.3 1016.2 1007.5 MAX. QNH PRESSURE IN HPA 1022.4 1021.2 1016.8 1015.3 1006.7 1002.2 1001.4 1002.8 1007.5 1015.4 1019.0 1020.3 1022.4 DAY 15 19 13 4 6 5 25 26 17 28 22 21 MIN. QNH PRESSURE IN HPA 1013.6 1010.8 1008.7 1004.9 997.2 991.1 992.2 991.1 998.5 1001.6 1010.0 1012.4 991.1 DAY 7 11 9 24 31 19 8 13 8 4 4 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 JASK (40893) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 25 38 N LONGITUDE 57 46 E DATA PROCESSING CENTER ELEVATION 5.2 M MEANS AND EXTREMES FOR THE YEAR 1975 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 1500 UTC. MEAN QFE PRESSURE IN HPA 1017.1 1015.6 1012.3 1008.8 1002.6 995.8 996.9 997.1 1002.8 1008.3 1014.7 1016.7 1007.4 MAX. QFE PRESSURE IN HPA 1022.6 1020.7 1017.0 1015.0 1006.4 1001.9 1002.1 1002.5 1007.4 1015.8 1019.0 1021.2 1022.6 DAY 15 19 10 4 6 5 26 26 17 28 21 21 MIN. QFE PRESSURE IN HPA 1013.7 1010.7 1008.2 1004.4 995.9 989.8 991.9 990.8 998.2 1000.6 1010.0 1012.4 989.8 DAY 7 7 26 24 31 19 8 13 8 3 29 2 MEAN QNH PRESSURE IN HPA 1017.4 1015.9 1012.6 1009.1 1002.9 996.1 997.2 997.4 1003.1 1008.6 1015.1 1017.0 1007.7 MAX. QNH PRESSURE IN HPA 1022.9 1021.0 1017.3 1015.3 1006.7 1002.2 1002.4 1002.8 1007.7 1016.1 1019.3 1021.5 1022.9 DAY 15 19 10 4 6 5 26 26 17 28 21 21 MIN. QNH PRESSURE IN HPA 1014.0 1011.0 1008.5 1004.7 996.2 990.1 992.2 991.1 998.5 1000.9 1010.3 1012.7 990.1 DAY 7 7 26 24 31 19 8 13 8 3 29 2 MEAN QFF PRESSURE IN HPA 1017.7 1016.2 1012.9 1009.4 1003.2 996.4 997.4 997.7 1003.4 1008.9 1015.3 1017.3 1008.0 MAX. QFF PRESSURE IN HPA 1023.2 1021.3 1017.6 1015.6 1007.0 1002.5 1002.7 1003.1 1008.0 1016.4 1019.6 1021.8 1023.2 DAY 15 19 10 4 6 5 26 26 17 28 21 21 MIN. QFF PRESSURE IN HPA 1014.3 1011.3 1008.8 1005.0 996.5 990.4 992.5 991.4 998.8 1001.2 1010.6 1013.0 990.4 DAY 7 7 26 24 31 19 8 13 8 3 29 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 JASK (40893) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 25 38 N LONGITUDE 57 46 E DATA PROCESSING CENTER ELEVATION 5.2 M MEANS AND EXTREMES FOR THE YEAR 1976 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AIR TEMPERATURE (C) 20.8 20.1 22.7 26.0 30.4 32.3 32.5 32.5 31.1 29.5 26.2 23.0 27.3 MINIMUN AIR TEMPERATURE (C) 16.3 16.7 19.4 22.3 26.0 28.8 30.2 30.0 28.4 25.5 19.6 18.0 23.4 DAYS WITH MINIMUM TEMP. >=21 2 2 5 23 31 30 31 31 29 31 13 1 229 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) 14.0 12.0 17.0 18.0 22.0 26.0 27.0 28.0 27.0 23.0 16.0 15.0 12.0 DAY 3 8 4 8 1 8 24 26 21 13 23 19 MAXIMUM AIR TEMPERATURE (C) 23.9 22.8 25.2 28.8 33.8 35.0 34.4 34.4 32.9 32.1 29.1 25.5 29.8 DAYS WITH MAXIMUM TEMP. >=30 0 0 0 11 30 30 31 31 30 31 12 0 206 DAYS WITH MAXIMUM TEMP. <= 0 0 0 0 0 0 0 0 0 0 0 0 0 0 TEMPERATURE RECORDS HIGHEST(C) 27.0 26.0 28.0 32.0 40.0 40.0 37.0 40.0 35.0 35.0 34.0 27.0 40.0 DAY 24 14 5 20 23 15 30 12 2 4 2 2 DIF. BETWEEN (MAX.-MIN.) (C) 7.6 6.1 5.8 6.5 7.8 6.2 4.2 4.4 4.5 6.6 9.5 7.5 6.4 MEAN DAILY TEMP. (MDT) (C) 20.1 19.7 22.3 25.6 29.9 31.9 32.3 32.2 30.7 28.8 24.4 21.7 26.6 COOLING DEG. DAYS(BASE 21 0C) 11.0 7.0 41.0 137.0 276.0 327.5 350.0 346.5 280.5 242.5 101.0 27.5 2147.5 HEATING DEG. DAYS(BASE 18 0C) 0.0 1.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 1.0 DEWPOINT (MEAN C) 12.1 13.0 16.7 19.3 21.0 25.6 28.0 28.0 25.5 23.6 13.8 14.9 20.1 MIXING RATIO (G/KG) 9.03 9.60 12.09 14.26 16.00 21.44 24.60 24.45 20.95 18.56 10.58 10.89 16.04 VAPOUR PRESSURE (HPA) 14.53 15.41 19.30 22.63 25.18 33.25 37.89 37.79 32.75 29.27 16.93 17.49 25.20 SATURATION DEF. (HPA) 10.29 8.33 8.41 11.34 18.80 15.45 11.03 11.31 12.44 12.13 17.53 10.80 12.32 RELATIVE HUMIDITY (MEAN %) 59 65 70 67 59 70 78 77 73 71 49 62 67 RELATIVE HUMIDITY (MAX. %) 72 74 82 79 74 81 85 83 81 82 60 72 77 RELATIVE HUMIDITY (MIN. %) 49 58 60 57 45 60 70 70 64 62 38 53 57 RELATIVE HUMIDITY (MEAN% 03UTC) 70 71 81 75 68 78 83 82 79 79 46 65 73 RELATIVE HUMIDITY (MEAN% 09UTC) 53 61 64 64 54 65 71 70 67 66 46 56 61 RELATIVE HUMIDITY (MEAN% 15UTC) 61 68 71 71 62 72 82 82 76 75 58 69 71 RH=0 => RELATIVE HUMIDITY < 0.5% AMOUNT OF PRECIPITATION MM. 52.0 125.0 48.0 85.0 0.0 0.0 12.0 0.0 0.0 12.0 0.0 34.0 368.0 DAYS WITH PRECIPITATION >=10 2 5 2 1 0 0 0 0 0 1 0 2 13 DAYS WITH PRECIPITATION >= 5 3 6 2 3 0 0 2 0 0 1 0 2 19 DAYS WITH PRECIPITATION >= 1 5 8 8 6 0 0 2 0 0 1 0 3 33 DAYS WITH PRECIPITATION 5 8 9 6 0 0 2 0 0 1 0 3 34 GREATEST DAILY PRECIPITATION 21.0 55.0 21.0 66.0 0.0 0.0 7.0 0.0 0.0 12.0 0.0 21.0 66.0 DAY 25 1 19 8 ** ** 24 ** ** 12 ** 31 DAY WITH THUNDER STORM 0 0 2 2 0 0 0 0 0 3 0 0 7 DAYS WITH SNOW OR SLEET 0 0 0 0 0 0 0 0 0 0 0 0 0 DAYS WITH DUST 0 2 9 2 0 3 1 0 1 0 2 1 21 WIND DIRECTION (PREVAILING) 270 90 270 270 270 180 180 180 180 180 180 180 180 PREVAILING WIND SPEED(KNOTS) 7.7 10.1 6.8 7.1 6.1 6.4 6.7 6.8 6.9 4.9 5.4 5.2 6.0 PREVAILING WIND PERCENT 26.5 18.6 26.5 44.0 54.8 34.0 61.3 78.7 58.0 28.4 36.0 23.2 29.5 CALMS PERCENT OF WIND 11.0 13.8 7.1 7.3 8.4 1.3 0.0 0.0 1.3 19.4 0.0 0.0 5.8 NO. OF WIND OBSERVATION 155 145 155 150 155 150 155 155 150 155 150 155 1830 VECTOR WIND DIRECTION (MEAN) 277 47 288 275 261 188 169 176 158 154 173 184 199 VECTOR WIND MAGNITUDE(KNOTS) 2.9 0.7 2.0 3.5 3.9 3.2 5.0 5.7 5.3 2.1 1.9 0.9 2.0 WIND STEADINESES (MEAN %) 56.9 10.6 36.4 63.6 76.5 49.2 75.8 85.1 81.5 53.8 33.9 16.7 35.1 WIND SPEED (MEAN KNOTS) 5.1 6.6 5.5 5.5 5.1 6.5 6.6 6.7 6.5 3.9 5.6 5.4 5.7 FASTEST WIND DIRECTION 270 300 300 280 270 120 120 120 120 270 270 110 280 FASTEST WIND SPEED (KNOTS) 17 25 27 30 15 18 15 12 12 10 18 14 30 DAY 9 1 4 21 16 18 2 1 3 23 5 20 DAYS WITH SKY CLEAR (0-2)/8 19 14 10 21 26 29 24 26 27 28 27 22 273 DAYS WITH P.CLOUDY (3-6)/8 9 9 12 6 4 1 7 5 3 3 3 8 70 DAYS WITH CLOUDY (7-8)/8 3 6 9 3 1 0 0 0 0 0 0 1 23 DAYS WITH VISIBILITY =< 2 KM 0 4 0 3 0 0 0 0 0 1 1 0 9 DURATION OF SUNSHINE HOURS 0.0 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION JASK (40893) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 25 38 N LONGITUDE 57 46 E DATA PROCESSING CENTER ELEVATION 5.2 M MEANS AND EXTREMES FOR THE YEAR 1976 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL MEAN QFE PRESSURE IN HPA 1016.5 1015.0 1012.5 1010.2 1004.6 998.9 996.2 999.4 1005.3 1010.7 1014.4 1017.5 1008.4 MAX. QFE PRESSURE IN HPA 1021.7 1021.7 1018.7 1015.4 1011.8 1006.7 1001.5 1003.9 1011.9 1017.5 1020.0 1024.2 1024.2 DAY-HOUR 5- 6 21- 6 3- 6 6- 6 9- 6 21- 6 7- 6 27- 6 21- 6 31- 6 14- 6 14- 6 MIN. QFE PRESSURE IN HPA 1011.6 1008.4 1006.4 1004.5 998.9 991.9 990.2 993.0 998.7 1005.0 1008.2 1011.2 990.2 DAY-HOUR 12-12 23-12 14-12 28-12 30-15 5-15 30-15 12-15 1-15 19-12 5-12 31- 3 MEAN QNH PRESSURE IN HPA 1016.8 1015.4 1012.9 1010.5 1004.9 999.2 996.6 999.7 1005.6 1011.1 1014.7 1017.8 1008.7 MAX. QNH PRESSURE IN HPA 1022.0 1022.0 1019.0 1015.7 1012.1 1007.0 1001.8 1004.2 1012.2 1017.8 1020.3 1024.5 1024.5 DAY-HOUR 5- 6 21- 6 3- 6 6- 6 9- 6 21- 6 7- 6 27- 6 21- 6 31- 6 14- 6 14- 6 MIN. QNH PRESSURE IN HPA 1011.9 1008.7 1006.7 1004.8 999.2 992.2 990.5 993.3 999.0 1005.3 1008.5 1011.5 990.5 DAY-HOUR 12-12 23-12 14-12 28-12 30-15 5-15 30-15 12-15 1-15 19-12 5-12 31- 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 1016.8 1015.0 1012.7 1010.4 1004.8 999.1 996.9 999.7 1005.7 1011.2 1014.6 1017.7 1008.7 MAX. QFE PRESSURE IN HPA 1019.6 1019.5 1016.8 1013.7 1010.1 1005.0 1001.3 1002.8 1011.1 1016.2 1018.8 1022.3 1022.3 DAY 16 22 4 6 10 21 6 10 21 31 14 14 MIN. QFE PRESSURE IN HPA 1013.8 1010.8 1007.5 1005.7 1000.1 993.4 992.7 994.6 1001.3 1006.7 1008.9 1011.2 992.7 DAY 12 16 15 28 31 6 31 1 1 19 29 31 MEAN QNH PRESSURE IN HPA 1017.1 1015.4 1013.0 1010.7 1005.1 999.5 997.2 1000.0 1006.0 1011.5 1014.9 1018.0 1009.0 MAX. QNH PRESSURE IN HPA 1019.9 1019.8 1017.1 1014.0 1010.4 1005.3 1001.6 1003.1 1011.4 1016.5 1019.1 1022.6 1022.6 DAY 16 22 4 6 10 21 6 10 21 31 14 14 MIN. QNH PRESSURE IN HPA 1014.1 1011.1 1007.8 1006.0 1000.4 993.7 993.0 994.9 1001.6 1007.0 1009.2 1011.5 993.0 DAY 12 16 15 28 31 6 31 1 1 19 29 31 MEAN QFF PRESSURE IN HPA 1017.4 1015.7 1013.3 1011.0 1005.4 999.7 997.4 1000.3 1006.2 1011.7 1015.2 1018.3 1009.3 MAX. QFF PRESSURE IN HPA 1020.2 1020.1 1017.4 1014.3 1010.7 1005.6 1001.9 1003.4 1011.7 1016.8 1019.4 1022.9 1022.9 DAY 16 22 4 6 10 21 6 10 21 31 14 14 MIN. QFF PRESSURE IN HPA 1014.4 1011.4 1008.1 1006.3 1000.7 994.0 993.3 995.2 1001.9 1007.3 1009.5 1011.8 993.3 DAY 12 16 15 28 31 6 31 1 1 19 29 31 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION JASK (40893) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 25 38 N LONGITUDE 57 46 E DATA PROCESSING CENTER ELEVATION 5.2 M MEANS AND EXTREMES FOR THE YEAR 1976 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 0600 UTC. MEAN QFE PRESSURE IN HPA 1018.5 1016.7 1014.4 1011.7 1006.2 1000.4 997.9 1001.0 1007.1 1012.7 1016.4 1019.4 1010.2 MAX. QFE PRESSURE IN HPA 1021.7 1021.7 1018.7 1015.4 1011.8 1006.7 1001.5 1003.9 1011.9 1017.5 1020.0 1024.2 1024.2 DAY 5 21 3 6 9 21 7 27 21 31 14 14 MIN. QFE PRESSURE IN HPA 1015.4 1012.9 1008.7 1006.5 1001.6 994.4 994.3 995.6 1002.8 1008.0 1010.8 1014.3 994.3 DAY 12 23 14 28 30 6 31 1 2 19 29 31 MEAN QNH PRESSURE IN HPA 1018.8 1017.1 1014.8 1012.0 1006.5 1000.7 998.2 1001.4 1007.4 1013.0 1016.7 1019.7 1010.5 MAX. QNH PRESSURE IN HPA 1022.0 1022.0 1019.0 1015.7 1012.1 1007.0 1001.8 1004.2 1012.2 1017.8 1020.3 1024.5 1024.5 DAY 5 21 3 6 9 21 7 27 21 31 14 14 MIN. QNH PRESSURE IN HPA 1015.7 1013.2 1009.0 1006.8 1001.9 994.7 994.6 995.9 1003.1 1008.3 1011.1 1014.6 994.6 DAY 12 23 14 28 30 6 31 1 2 19 29 31 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 1016.3 1015.3 1012.8 1010.6 1005.0 999.6 996.6 999.8 1005.6 1010.9 1014.2 1017.3 1008.7 MAX. QFE PRESSURE IN HPA 1019.7 1020.4 1017.4 1013.8 1010.9 1005.2 1000.0 1002.8 1010.1 1016.0 1017.9 1021.9 1021.9 DAY 5 21 3 6 9 21 22 27 21 31 14 14 MIN. QFE PRESSURE IN HPA 1012.2 1010.6 1007.2 1005.5 1000.4 994.5 992.4 994.6 1000.9 1006.6 1009.2 1013.3 992.4 DAY 12 23 14 28 30 6 30 1 1 18 29 31 MEAN QNH PRESSURE IN HPA 1016.6 1015.6 1013.1 1010.9 1005.3 999.9 996.9 1000.1 1005.9 1011.2 1014.6 1017.6 1009.0 MAX. QNH PRESSURE IN HPA 1020.0 1020.7 1017.7 1014.1 1011.2 1005.5 1000.3 1003.1 1010.4 1016.3 1018.2 1022.2 1022.2 DAY 5 21 3 6 9 21 22 27 21 31 14 14 MIN. QNH PRESSURE IN HPA 1012.5 1010.9 1007.5 1005.8 1000.7 994.8 992.7 994.9 1001.2 1006.9 1009.5 1013.6 992.7 DAY 12 23 14 28 30 6 30 1 1 18 29 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 1015.3 1013.8 1011.1 1009.0 1003.5 997.9 995.0 998.1 1004.0 1009.3 1013.0 1016.1 1007.2 MAX. QFE PRESSURE IN HPA 1019.2 1019.6 1016.2 1012.0 1009.4 1003.9 997.8 1000.7 1008.9 1014.6 1016.3 1021.4 1021.4 DAY 16 21 3 6 9 21 22 26 30 31 12 13 MIN. QFE PRESSURE IN HPA 1011.6 1008.4 1006.4 1004.5 999.0 992.8 990.5 993.5 999.1 1005.0 1008.2 1012.5 990.5 DAY 12 23 14 28 31 5 30 1 1 19 5 26 MEAN QNH PRESSURE IN HPA 1015.6 1014.1 1011.4 1009.3 1003.8 998.3 995.3 998.4 1004.3 1009.7 1013.3 1016.4 1007.5 MAX. QNH PRESSURE IN HPA 1019.5 1019.9 1016.5 1012.3 1009.7 1004.2 998.1 1001.0 1009.2 1014.9 1016.6 1021.7 1021.7 DAY 16 21 3 6 9 21 22 26 30 31 12 13 MIN. QNH PRESSURE IN HPA 1011.9 1008.7 1006.7 1004.8 999.3 993.1 990.8 993.8 999.4 1005.3 1008.5 1012.8 990.8 DAY 12 23 14 28 31 5 30 1 1 19 5 26 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION JASK (40893) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 25 38 N LONGITUDE 57 46 E DATA PROCESSING CENTER ELEVATION 5.2 M MEANS AND EXTREMES FOR THE YEAR 1976 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 1500 UTC. MEAN QFE PRESSURE IN HPA 1015.7 1014.4 1011.8 1009.3 1003.4 997.4 994.9 998.2 1004.1 1009.7 1013.7 1017.0 1007.5 MAX. QFE PRESSURE IN HPA 1018.7 1019.8 1016.5 1013.4 1009.6 1002.9 999.0 1001.5 1009.2 1015.1 1017.4 1022.4 1022.4 DAY 5 21 3 6 9 20 23 21 30 31 12 13 MIN. QFE PRESSURE IN HPA 1011.7 1009.4 1007.8 1004.7 998.9 991.9 990.2 993.0 998.7 1005.5 1009.2 1013.5 990.2 DAY 12 23 14 28 30 5 30 12 1 19 5 26 MEAN QNH PRESSURE IN HPA 1016.0 1014.7 1012.1 1009.6 1003.7 997.7 995.3 998.5 1004.4 1010.0 1014.1 1017.3 1007.8 MAX. QNH PRESSURE IN HPA 1019.0 1020.1 1016.8 1013.7 1009.9 1003.2 999.3 1001.8 1009.5 1015.4 1017.7 1022.7 1022.7 DAY 5 21 3 6 9 20 23 21 30 31 12 13 MIN. QNH PRESSURE IN HPA 1012.0 1009.7 1008.1 1005.0 999.2 992.2 990.5 993.3 999.0 1005.8 1009.5 1013.8 990.5 DAY 12 23 14 28 30 5 30 12 1 19 5 26 MEAN QFF PRESSURE IN HPA 1016.3 1015.0 1012.4 1009.9 1004.0 998.0 995.5 998.8 1004.7 1010.2 1014.3 1017.6 1008.0 MAX. QFF PRESSURE IN HPA 1019.3 1020.4 1017.1 1014.0 1010.2 1003.5 999.6 1002.1 1009.8 1015.7 1018.0 1023.0 1023.0 DAY 5 21 3 6 9 20 23 21 30 31 12 13 MIN. QFF PRESSURE IN HPA 1012.3 1010.0 1008.4 1005.3 999.5 992.5 990.8 993.6 999.3 1006.1 1009.8 1014.1 990.8 DAY 12 23 14 28 30 5 30 12 1 19 5 26 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 JASK (40893) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 25 38 N LONGITUDE 57 46 E DATA PROCESSING CENTER ELEVATION 5.2 M MEANS AND EXTREMES FOR THE YEAR 1977 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AIR TEMPERATURE (C) 19.1 21.8 25.6 27.3 31.7 32.1 31.9 31.4 31.2 29.6 26.4 24.2 27.7 MINIMUN AIR TEMPERATURE (C) 14.7 17.1 21.0 23.5 27.1 28.6 29.7 28.7 27.5 25.0 21.6 19.6 23.7 DAYS WITH MINIMUM TEMP. >=21 1 0 19 26 31 30 31 31 30 31 25 8 263 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) 10.0 14.0 16.0 18.0 24.0 26.0 29.0 25.0 25.0 22.0 13.0 15.0 10.0 DAY 15 1 1 4 4 3 1 26 11 19 29 31 MAXIMUM AIR TEMPERATURE (C) 21.6 25.1 29.0 30.2 34.7 34.8 33.4 33.1 33.5 31.8 29.1 26.4 30.2 DAYS WITH MAXIMUM TEMP. >=30 0 0 16 16 31 30 31 31 30 31 10 0 226 DAYS WITH MAXIMUM TEMP. <= 0 0 0 0 0 0 0 0 0 0 0 0 0 0 TEMPERATURE RECORDS HIGHEST(C) 26.0 28.0 33.0 35.0 39.0 38.0 38.0 42.0 42.0 36.0 33.0 28.0 42.0 DAY 7 18 18 16 14 7 5 4 2 1 3 10 DIF. BETWEEN (MAX.-MIN.) (C) 6.9 8.0 8.0 6.7 7.6 6.2 3.7 4.4 6.0 6.8 7.5 6.8 6.5 MEAN DAILY TEMP. (MDT) (C) 18.2 21.1 25.0 26.8 30.9 31.7 31.5 30.9 30.5 28.4 25.3 23.0 26.9 COOLING DEG. DAYS(BASE 21 0C) 3.5 18.0 125.0 175.5 308.0 321.0 326.5 307.0 284.0 229.0 131.0 64.0 2292.5 HEATING DEG. DAYS(BASE 18 0C) 28.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 28.0 DEWPOINT (MEAN C) 10.5 12.1 17.7 18.7 22.4 25.9 26.8 25.5 24.8 24.1 18.0 16.3 20.2 MIXING RATIO (G/KG) 8.28 9.13 12.95 13.81 17.57 21.69 22.86 21.08 20.27 19.14 13.40 11.85 16.00 VAPOUR PRESSURE (HPA) 13.33 14.69 20.65 21.88 27.56 33.62 35.28 32.77 31.71 30.19 21.35 18.99 25.17 SATURATION DEF. (HPA) 9.03 11.75 12.52 15.03 19.60 14.50 12.06 13.60 13.96 11.45 13.46 11.39 13.20 RELATIVE HUMIDITY (MEAN %) 59 56 64 61 60 71 75 72 71 74 62 63 66 RELATIVE HUMIDITY (MAX. %) 71 71 77 74 72 81 81 80 82 87 73 74 77 RELATIVE HUMIDITY (MIN. %) 49 43 48 51 48 61 68 64 60 63 52 52 55 RELATIVE HUMIDITY (MEAN% 03UTC) 67 62 70 69 67 77 79 78 78 84 70 70 73 RELATIVE HUMIDITY (MEAN% 09UTC) 55 48 58 57 56 65 69 67 65 67 57 58 60 RELATIVE HUMIDITY (MEAN% 15UTC) 59 64 69 65 66 75 80 76 73 78 64 65 70 RH=0 => RELATIVE HUMIDITY < 0.5% AMOUNT OF PRECIPITATION MM. 96.0 13.0 1.0 22.0 0.0 0.0 0.0 0.0 0.0 0.0 53.0 7.0 192.0 DAYS WITH PRECIPITATION >=10 4 0 0 1 0 0 0 0 0 0 2 0 7 DAYS WITH PRECIPITATION >= 5 7 2 0 1 0 0 0 0 0 0 2 1 13 DAYS WITH PRECIPITATION >= 1 9 2 1 3 0 0 0 0 0 0 2 1 18 DAYS WITH PRECIPITATION 9 2 1 3 0 0 0 0 0 0 2 1 18 GREATEST DAILY PRECIPITATION 25.0 7.0 1.0 18.0 0.0 0.0 0.0 0.0 0.0 0.0 37.0 7.0 37.0 DAY 21 25 29 2 ** ** ** ** ** ** 17 30 DAY WITH THUNDER STORM 2 0 0 1 0 0 0 0 0 1 1 0 5 DAYS WITH SNOW OR SLEET 0 0 0 0 0 0 0 0 0 0 0 0 0 DAYS WITH DUST 0 0 0 1 0 5 2 4 1 0 1 0 14 WIND DIRECTION (PREVAILING) 360 270 270 270 270 180 135 135 225 180 270 270 270 PREVAILING WIND SPEED(KNOTS) 3.5 6.7 6.7 8.3 7.3 6.4 8.5 7.7 5.0 6.2 6.4 7.8 7.3 PREVAILING WIND PERCENT 20.6 27.1 34.8 56.0 58.7 22.0 49.7 37.4 22.0 21.3 18.0 24.5 24.8 CALMS PERCENT OF WIND 7.1 10.7 12.3 3.3 0.0 0.0 0.0 1.3 4.7 12.3 6.0 0.0 4.8 NO. OF WIND OBSERVATION 155 140 155 150 155 150 155 155 150 155 150 155 1825 VECTOR WIND DIRECTION (MEAN) 349 259 256 272 252 169 140 135 174 183 252 255 208 VECTOR WIND MAGNITUDE(KNOTS) 1.3 1.8 3.1 5.6 4.2 3.1 6.5 4.7 2.5 2.0 1.4 1.6 1.7 WIND STEADINESES (MEAN %) 28.3 39.1 67.4 82.4 65.6 40.8 80.2 63.5 49.0 40.8 32.6 26.2 28.8 WIND SPEED (MEAN KNOTS) 4.6 4.6 4.6 6.8 6.4 7.6 8.1 7.4 5.1 4.9 4.3 6.1 5.9 FASTEST WIND DIRECTION 270 270 280 330 270 40 120 110 120 300 260 250 40 FASTEST WIND SPEED (KNOTS) 16 15 15 18 14 32 15 20 15 15 15 20 32 DAY 9 13 8 3 15 13 17 10 16 1 6 30 DAYS WITH SKY CLEAR (0-2)/8 12 24 20 26 29 30 29 25 29 30 26 20 300 DAYS WITH P.CLOUDY (3-6)/8 12 3 10 1 2 0 2 6 1 1 3 11 52 DAYS WITH CLOUDY (7-8)/8 7 1 1 3 0 0 0 0 0 0 1 0 13 DAYS WITH VISIBILITY =< 2 KM 1 1 0 0 2 1 0 0 0 1 0 0 6 DURATION OF SUNSHINE HOURS ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION JASK (40893) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 25 38 N LONGITUDE 57 46 E DATA PROCESSING CENTER ELEVATION 5.2 M MEANS AND EXTREMES FOR THE YEAR 1977 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL MEAN QFE PRESSURE IN HPA 1016.8 1016.8 1013.8 1007.8 1004.5 998.5 995.4 1000.0 1005.2 1011.9 1014.2 1017.0 1008.5 MAX. QFE PRESSURE IN HPA 1023.8 1022.4 1021.0 1013.5 1011.5 1005.9 1001.7 1005.9 1013.6 1018.8 1019.4 1022.8 1023.8 DAY-HOUR 10- 6 15- 6 6- 6 14- 6 12- 6 1- 6 13- 6 11- 6 25- 6 19- 6 2- 6 2- 6 MIN. QFE PRESSURE IN HPA 1010.7 1011.5 1007.0 1000.1 1000.0 989.5 989.4 992.4 997.7 1004.9 1008.5 1011.4 989.4 DAY-HOUR 22-12 21- 3 22-15 7- 9 7-15 28-15 5-15 5-12 2-12 4-12 17- 3 8-12 MEAN QNH PRESSURE IN HPA 1017.1 1017.1 1014.1 1008.1 1004.8 998.8 995.8 1000.4 1005.6 1012.2 1014.5 1017.3 1008.8 MAX. QNH PRESSURE IN HPA 1024.1 1022.7 1021.3 1013.8 1011.8 1006.2 1002.0 1006.2 1013.9 1019.1 1019.7 1023.1 1024.1 DAY-HOUR 10- 6 15- 6 6- 6 14- 6 12- 6 1- 6 13- 6 11- 6 25- 6 19- 6 2- 6 2- 6 MIN. QNH PRESSURE IN HPA 1011.0 1011.8 1007.3 1000.4 1000.3 989.8 989.7 992.7 998.0 1005.2 1008.8 1011.7 989.7 DAY-HOUR 22-12 21- 3 22-15 7- 9 7-15 28-15 5-15 5-12 2-12 4-12 17- 3 8-12 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 1016.9 1016.9 1013.7 1008.1 1004.9 999.2 996.2 1000.5 1005.6 1012.5 1014.6 1017.6 1008.9 MAX. QFE PRESSURE IN HPA 1022.3 1020.7 1019.0 1011.5 1010.5 1003.9 1000.7 1004.0 1012.5 1017.7 1018.2 1021.7 1022.3 DAY 11 15 6 20 12 1 13 11 25 19 2 2 MIN. QFE PRESSURE IN HPA 1012.1 1011.5 1008.3 1004.9 1002.0 992.8 992.7 993.5 1000.1 1007.3 1008.5 1014.3 992.7 DAY 24 21 22 29 19 29 5 6 4 4 17 30 MEAN QNH PRESSURE IN HPA 1017.2 1017.2 1014.0 1008.4 1005.2 999.5 996.5 1000.8 1005.9 1012.8 1014.9 1017.9 1009.2 MAX. QNH PRESSURE IN HPA 1022.6 1021.0 1019.3 1011.8 1010.8 1004.2 1001.0 1004.3 1012.8 1018.0 1018.5 1022.0 1022.6 DAY 11 15 6 20 12 1 13 11 25 19 2 2 MIN. QNH PRESSURE IN HPA 1012.4 1011.8 1008.6 1005.2 1002.3 993.1 993.0 993.8 1000.4 1007.6 1008.8 1014.6 993.0 DAY 24 21 22 29 19 29 5 6 4 4 17 30 MEAN QFF PRESSURE IN HPA 1017.5 1017.5 1014.3 1008.6 1005.5 999.8 996.7 1001.1 1006.2 1013.1 1015.2 1018.2 1009.5 MAX. QFF PRESSURE IN HPA 1022.9 1021.3 1019.6 1012.1 1011.1 1004.5 1001.3 1004.6 1013.1 1018.3 1018.8 1022.3 1022.9 DAY 11 15 6 20 12 1 13 11 25 19 2 2 MIN. QFF PRESSURE IN HPA 1012.7 1012.1 1008.9 1005.5 1002.6 993.4 993.3 994.1 1000.7 1007.9 1009.1 1014.9 993.3 DAY 24 21 22 29 19 29 5 6 4 4 17 30 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION JASK (40893) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 25 38 N LONGITUDE 57 46 E DATA PROCESSING CENTER ELEVATION 5.2 M MEANS AND EXTREMES FOR THE YEAR 1977 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 0600 UTC. MEAN QFE PRESSURE IN HPA 1018.7 1018.7 1015.8 1009.5 1006.1 1000.3 997.2 1001.7 1007.0 1013.8 1016.0 1019.0 1010.3 MAX. QFE PRESSURE IN HPA 1023.8 1022.4 1021.0 1013.5 1011.5 1005.9 1001.7 1005.9 1013.6 1018.8 1019.4 1022.8 1023.8 DAY 10 15 6 14 12 1 13 11 25 19 2 2 MIN. QFE PRESSURE IN HPA 1013.2 1013.9 1009.5 1006.0 1003.0 992.7 992.8 994.5 1001.4 1008.3 1010.8 1015.3 992.7 DAY 23 21 22 29 7 28 5 6 2 4 17 30 MEAN QNH PRESSURE IN HPA 1019.0 1019.0 1016.1 1009.8 1006.5 1000.6 997.5 1002.0 1007.4 1014.1 1016.3 1019.4 1010.6 MAX. QNH PRESSURE IN HPA 1024.1 1022.7 1021.3 1013.8 1011.8 1006.2 1002.0 1006.2 1013.9 1019.1 1019.7 1023.1 1024.1 DAY 10 15 6 14 12 1 13 11 25 19 2 2 MIN. QNH PRESSURE IN HPA 1013.5 1014.2 1009.8 1006.3 1003.3 993.0 993.1 994.8 1001.7 1008.6 1011.1 1015.6 993.0 DAY 23 21 22 29 7 28 5 6 2 4 17 30 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 1016.7 1017.1 1014.2 1008.2 1004.9 998.8 995.8 1000.4 1005.6 1011.9 1014.1 1016.8 1008.7 MAX. QFE PRESSURE IN HPA 1022.7 1020.3 1020.0 1012.1 1010.4 1003.5 1000.2 1004.6 1011.7 1016.6 1018.1 1020.0 1022.7 DAY 11 15 6 1 12 1 19 11 29 19 2 2 MIN. QFE PRESSURE IN HPA 1011.1 1012.2 1009.2 1000.1 1001.6 991.9 991.5 993.6 999.8 1006.0 1010.1 1013.2 991.5 DAY 22 21 30 7 7 28 5 5 3 4 18 8 MEAN QNH PRESSURE IN HPA 1017.0 1017.4 1014.6 1008.5 1005.2 999.1 996.1 1000.7 1005.9 1012.3 1014.4 1017.1 1009.0 MAX. QNH PRESSURE IN HPA 1023.0 1020.6 1020.3 1012.4 1010.7 1003.8 1000.5 1004.9 1012.0 1016.9 1018.4 1020.3 1023.0 DAY 11 15 6 1 12 1 19 11 29 19 2 2 MIN. QNH PRESSURE IN HPA 1011.4 1012.5 1009.5 1000.4 1001.9 992.2 991.8 993.9 1000.1 1006.3 1010.4 1013.5 991.8 DAY 22 21 30 7 7 28 5 5 3 4 18 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 1015.6 1015.6 1012.5 1006.5 1003.2 997.1 994.1 998.8 1004.0 1010.4 1012.8 1015.3 1007.2 MAX. QFE PRESSURE IN HPA 1021.2 1018.9 1018.0 1010.2 1009.3 1002.1 998.4 1002.7 1009.8 1014.5 1016.7 1018.5 1021.2 DAY 10 4 6 1 12 1 12 11 25 19 30 2 MIN. QFE PRESSURE IN HPA 1010.7 1011.7 1007.3 1003.3 1000.2 990.0 989.6 992.4 997.7 1004.9 1008.5 1011.4 989.6 DAY 22 20 22 7 7 28 5 5 2 4 17 8 MEAN QNH PRESSURE IN HPA 1015.9 1015.9 1012.9 1006.8 1003.6 997.4 994.4 999.1 1004.3 1010.7 1013.1 1015.6 1007.5 MAX. QNH PRESSURE IN HPA 1021.5 1019.2 1018.3 1010.5 1009.6 1002.4 998.7 1003.0 1010.1 1014.8 1017.0 1018.8 1021.5 DAY 10 4 6 1 12 1 12 11 25 19 30 2 MIN. QNH PRESSURE IN HPA 1011.0 1012.0 1007.6 1003.6 1000.5 990.3 989.9 992.7 998.0 1005.2 1008.8 1011.7 989.9 DAY 22 20 22 7 7 28 5 5 2 4 17 8 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION JASK (40893) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 25 38 N LONGITUDE 57 46 E DATA PROCESSING CENTER ELEVATION 5.2 M MEANS AND EXTREMES FOR THE YEAR 1977 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 1500 UTC. MEAN QFE PRESSURE IN HPA 1016.2 1015.8 1012.8 1006.8 1003.2 997.1 994.1 998.9 1004.0 1010.8 1013.5 1016.2 1007.5 MAX. QFE PRESSURE IN HPA 1021.7 1019.3 1017.9 1010.0 1009.7 1002.1 999.5 1003.5 1010.6 1015.2 1017.5 1019.6 1021.7 DAY 10 4 7 20 12 12 12 11 24 18 30 2 MIN. QFE PRESSURE IN HPA 1011.5 1012.2 1007.0 1003.6 1000.0 989.5 989.4 993.1 998.5 1005.2 1008.7 1012.8 989.4 DAY 22 20 22 7 7 28 5 5 3 4 17 8 MEAN QNH PRESSURE IN HPA 1016.5 1016.1 1013.1 1007.1 1003.5 997.4 994.4 999.2 1004.4 1011.2 1013.8 1016.6 1007.8 MAX. QNH PRESSURE IN HPA 1022.0 1019.6 1018.2 1010.3 1010.0 1002.4 999.8 1003.8 1010.9 1015.5 1017.8 1019.9 1022.0 DAY 10 4 7 20 12 12 12 11 24 18 30 2 MIN. QNH PRESSURE IN HPA 1011.8 1012.5 1007.3 1003.9 1000.3 989.8 989.7 993.4 998.8 1005.5 1009.0 1013.1 989.7 DAY 22 20 22 7 7 28 5 5 3 4 17 8 MEAN QFF PRESSURE IN HPA 1016.8 1016.4 1013.4 1007.4 1003.8 997.7 994.6 999.4 1004.6 1011.4 1014.1 1016.8 1008.0 MAX. QFF PRESSURE IN HPA 1022.3 1019.9 1018.5 1010.6 1010.3 1002.7 1000.1 1004.1 1011.2 1015.8 1018.1 1020.2 1022.3 DAY 10 4 7 20 12 12 12 11 24 18 30 31 MIN. QFF PRESSURE IN HPA 1012.1 1012.8 1007.6 1004.2 1000.6 990.1 990.0 993.7 999.1 1005.8 1009.3 1013.4 990.0 DAY 22 20 22 29 7 28 5 5 3 4 17 8 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 JASK (40893) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 25 38 N LONGITUDE 57 46 E DATA PROCESSING CENTER ELEVATION 5.2 M MEANS AND EXTREMES FOR THE YEAR 1978 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AIR TEMPERATURE (C) 21.9 21.7 24.0 27.6 30.8 33.4 33.5 31.7 29.6 29.3 26.3 23.8 27.8 MINIMUN AIR TEMPERATURE (C) 16.8 17.4 19.9 23.8 25.8 29.7 30.5 29.3 26.6 24.1 21.4 18.2 23.6 DAYS WITH MINIMUM TEMP. >=21 3 0 9 30 31 30 31 31 30 31 21 2 249 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) 14.0 15.0 17.0 21.0 24.0 27.0 25.0 27.0 25.0 22.0 16.0 16.0 14.0 DAY 14 3 22 5 1 5 14 27 19 10 28 12 MAXIMUM AIR TEMPERATURE (C) 24.6 24.3 26.9 30.3 33.8 35.5 35.5 33.3 31.5 32.2 28.6 25.9 30.2 DAYS WITH MAXIMUM TEMP. >=30 0 0 3 18 31 30 31 31 30 31 9 0 214 DAYS WITH MAXIMUM TEMP. <= 0 0 0 0 0 0 0 0 0 0 0 0 0 0 TEMPERATURE RECORDS HIGHEST(C) 26.0 26.0 35.0 34.0 37.0 39.0 39.0 37.0 34.0 37.0 31.0 27.0 39.0 DAY 3 5 31 21 29 8 20 18 10 2 4 2 DIF. BETWEEN (MAX.-MIN.) (C) 7.8 6.9 7.0 6.5 8.0 5.8 5.0 4.0 4.9 8.1 7.2 7.7 6.6 MEAN DAILY TEMP. (MDT) (C) 20.7 20.8 23.4 27.0 29.8 32.6 33.0 31.3 29.1 28.1 25.0 22.1 26.9 COOLING DEG. DAYS(BASE 21 0C) 13.5 8.5 73.5 181.0 274.0 348.5 372.0 319.0 242.5 220.5 119.5 33.5 2206.0 HEATING DEG. DAYS(BASE 18 0C) 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 DEWPOINT (MEAN C) 12.2 14.2 15.1 20.6 21.9 25.9 27.7 27.0 24.6 21.3 16.3 15.3 20.2 MIXING RATIO (G/KG) 9.20 10.37 11.08 15.51 17.14 22.07 24.27 23.08 19.80 16.28 12.40 11.19 16.03 VAPOUR PRESSURE (HPA) 14.82 16.66 17.69 24.52 26.88 34.12 37.41 35.73 30.99 25.78 19.79 17.98 25.20 SATURATION DEF. (HPA) 11.65 9.59 12.43 12.60 17.88 17.40 14.73 11.08 10.69 15.40 14.72 11.61 13.31 RELATIVE HUMIDITY (MEAN %) 56 64 59 67 61 68 73 77 75 64 57 61 65 RELATIVE HUMIDITY (MAX. %) 67 75 72 78 73 76 82 84 85 78 67 72 76 RELATIVE HUMIDITY (MIN. %) 47 54 48 58 50 60 66 71 67 52 48 52 56 RELATIVE HUMIDITY (MEAN% 03UTC) 66 71 67 73 67 71 78 82 83 72 60 71 72 RELATIVE HUMIDITY (MEAN% 09UTC) 49 58 54 60 54 62 68 72 70 59 53 53 59 RELATIVE HUMIDITY (MEAN% 15UTC) 59 67 64 73 68 73 76 79 78 69 63 65 70 RH=0 => RELATIVE HUMIDITY < 0.5% AMOUNT OF PRECIPITATION MM. 20.0 114.0 15.0 0.0 0.0 0.0 19.0 0.0 0.0 0.0 0.0 0.0 168.0 DAYS WITH PRECIPITATION >=10 1 4 1 0 0 0 1 0 0 0 0 0 7 DAYS WITH PRECIPITATION >= 5 1 5 1 0 0 0 2 0 0 0 0 0 9 DAYS WITH PRECIPITATION >= 1 1 6 2 0 0 0 3 0 0 0 0 0 12 DAYS WITH PRECIPITATION 1 6 2 0 0 0 3 0 0 0 0 0 12 GREATEST DAILY PRECIPITATION 20.0 34.0 14.0 0.0 0.0 0.0 12.0 0.0 0.0 0.0 0.0 0.0 34.0 DAY 16 9 9 ** ** ** 13 ** ** ** ** ** DAY WITH THUNDER STORM 1 2 2 0 0 0 1 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 3 1 4 4 5 0 1 1 3 3 25 WIND DIRECTION (PREVAILING) 270 270 270 270 270 270 180 180 180 270 270 270 270 PREVAILING WIND SPEED(KNOTS) 7.5 7.6 8.0 8.2 7.7 8.8 8.1 8.0 6.5 6.3 7.2 6.4 7.7 PREVAILING WIND PERCENT 24.5 21.4 32.9 33.3 54.8 32.0 29.7 43.9 31.3 21.9 32.7 21.9 25.4 CALMS PERCENT OF WIND 1.9 1.4 2.6 2.0 0.0 0.0 1.3 0.0 11.3 17.4 5.3 1.3 3.7 NO. OF WIND OBSERVATION 155 140 155 150 155 150 155 155 150 155 150 155 1825 VECTOR WIND DIRECTION (MEAN) 263 267 266 245 248 209 172 148 148 236 264 153 207 VECTOR WIND MAGNITUDE(KNOTS) 0.8 0.4 3.2 3.1 4.5 4.0 3.6 6.0 3.9 1.7 1.9 0.9 1.9 WIND STEADINESES (MEAN %) 14.8 6.8 51.6 43.1 63.4 54.1 44.4 73.2 63.9 38.6 35.2 14.8 29.2 WIND SPEED (MEAN KNOTS) 5.4 5.9 6.2 7.2 7.1 7.4 8.1 8.2 6.1 4.4 5.4 6.1 6.5 FASTEST WIND DIRECTION 300 90 300 90 300 280 120 90 90 270 250 90 90 FASTEST WIND SPEED (KNOTS) 15 16 15 15 12 16 15 15 15 15 12 18 18 DAY 19 9 1 10 3 23 3 6 8 2 4 3 DAYS WITH SKY CLEAR (0-2)/8 26 20 21 19 29 29 22 24 29 31 26 27 303 DAYS WITH P.CLOUDY (3-6)/8 5 5 8 9 2 1 9 7 1 0 4 4 55 DAYS WITH CLOUDY (7-8)/8 0 3 2 2 0 0 0 0 0 0 0 0 7 DAYS WITH VISIBILITY =< 2 KM 0 1 1 0 0 0 0 0 1 0 0 0 3 DURATION OF SUNSHINE HOURS ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION JASK (40893) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 25 38 N LONGITUDE 57 46 E DATA PROCESSING CENTER ELEVATION 5.2 M MEANS AND EXTREMES FOR THE YEAR 1978 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL MEAN QFE PRESSURE IN HPA 1017.7 1016.4 1012.4 1008.4 1003.9 997.5 996.8 998.8 1005.0 1011.5 1015.2 1018.5 1008.5 MAX. QFE PRESSURE IN HPA 1025.5 1023.2 1018.0 1016.7 1012.4 1005.5 1004.6 1005.3 1011.0 1017.4 1024.3 1024.0 1025.5 DAY-HOUR 1- 6 1- 6 2- 6 6- 6 1- 6 1- 6 16- 6 21- 6 17- 6 31- 6 27- 6 5- 6 MIN. QFE PRESSURE IN HPA 1011.7 1011.7 1006.3 1000.4 997.3 990.4 990.5 993.9 997.5 1001.9 1006.9 1012.0 990.4 DAY-HOUR 26-12 10-12 31-12 19-12 30-12 23-12 17-15 18-12 1-15 1-15 11-15 15-12 MEAN QNH PRESSURE IN HPA 1018.0 1016.7 1012.7 1008.7 1004.3 997.8 997.2 999.1 1005.3 1011.9 1015.5 1018.8 1008.8 MAX. QNH PRESSURE IN HPA 1025.8 1023.5 1018.3 1017.0 1012.7 1005.8 1004.9 1005.6 1011.3 1017.7 1024.6 1024.3 1025.8 DAY-HOUR 1- 6 1- 6 2- 6 6- 6 1- 6 1- 6 16- 6 21- 6 17- 6 31- 6 27- 6 5- 6 MIN. QNH PRESSURE IN HPA 1012.0 1012.0 1006.6 1000.7 997.6 990.7 990.8 994.2 997.8 1002.2 1007.2 1012.3 990.7 DAY-HOUR 26-12 10-12 31-12 19-12 30-12 23-12 17-15 18-12 1-15 1-15 11-15 15-12 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY-HOUR **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY-HOUR **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** PRESSURE AT HOUR 0000 UTC. MEAN QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** PRESSURE AT HOUR 0300 UTC. MEAN QFE PRESSURE IN HPA 1018.1 1016.7 1012.6 1008.8 1004.2 997.9 997.3 999.4 1005.4 1011.9 1015.7 1019.1 1008.9 MAX. QFE PRESSURE IN HPA 1024.7 1021.3 1016.0 1014.8 1011.5 1003.9 1003.3 1004.2 1009.9 1015.7 1023.2 1022.4 1024.7 DAY 2 1 2 6 1 1 16 21 17 31 27 4 MIN. QFE PRESSURE IN HPA 1013.2 1013.8 1008.3 1004.7 999.8 990.5 993.1 996.5 999.3 1004.4 1009.5 1014.3 990.5 DAY 22 10 31 19 30 23 23 18 1 2 11 17 MEAN QNH PRESSURE IN HPA 1018.4 1017.1 1012.9 1009.1 1004.6 998.2 997.6 999.7 1005.8 1012.2 1016.0 1019.4 1009.2 MAX. QNH PRESSURE IN HPA 1025.0 1021.6 1016.3 1015.1 1011.8 1004.2 1003.6 1004.5 1010.2 1016.0 1023.5 1022.7 1025.0 DAY 2 1 2 6 1 1 16 21 17 31 27 4 MIN. QNH PRESSURE IN HPA 1013.5 1014.1 1008.6 1005.0 1000.1 990.8 993.4 996.8 999.6 1004.7 1009.8 1014.6 990.8 DAY 22 10 31 19 30 23 23 18 1 2 11 17 MEAN QFF PRESSURE IN HPA 1018.7 1017.3 1013.2 1009.4 1004.8 998.4 997.9 1000.0 1006.0 1012.5 1016.3 1019.7 1009.5 MAX. QFF PRESSURE IN HPA 1025.3 1021.9 1016.6 1015.4 1012.1 1004.5 1003.9 1004.8 1010.5 1016.3 1023.8 1023.0 1025.3 DAY 2 1 2 6 1 1 16 21 17 31 27 4 MIN. QFF PRESSURE IN HPA 1013.8 1014.4 1008.9 1005.3 1000.4 991.1 993.7 997.1 999.9 1005.0 1010.1 1014.9 991.1 DAY 22 10 31 19 30 23 23 18 1 2 11 17 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION JASK (40893) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 25 38 N LONGITUDE 57 46 E DATA PROCESSING CENTER ELEVATION 5.2 M MEANS AND EXTREMES FOR THE YEAR 1978 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 0600 UTC. MEAN QFE PRESSURE IN HPA 1019.7 1018.3 1014.3 1010.2 1005.7 999.2 998.6 1000.6 1006.8 1013.3 1017.0 1020.3 1010.3 MAX. QFE PRESSURE IN HPA 1025.5 1023.2 1018.0 1016.7 1012.4 1005.5 1004.6 1005.3 1011.0 1017.4 1024.3 1024.0 1025.5 DAY 1 1 2 6 1 1 16 21 17 31 27 5 MIN. QFE PRESSURE IN HPA 1015.3 1014.7 1009.8 1005.8 1001.1 992.2 994.4 997.6 1000.7 1005.9 1010.6 1015.0 992.2 DAY 26 10 30 19 30 23 22 9 1 2 11 17 MEAN QNH PRESSURE IN HPA 1020.0 1018.7 1014.6 1010.5 1006.0 999.5 998.9 1000.9 1007.2 1013.6 1017.3 1020.6 1010.7 MAX. QNH PRESSURE IN HPA 1025.8 1023.5 1018.3 1017.0 1012.7 1005.8 1004.9 1005.6 1011.3 1017.7 1024.6 1024.3 1025.8 DAY 1 1 2 6 1 1 16 21 17 31 27 5 MIN. QNH PRESSURE IN HPA 1015.6 1015.0 1010.1 1006.1 1001.4 992.5 994.7 997.9 1001.0 1006.2 1010.9 1015.3 992.5 DAY 26 10 30 19 30 23 22 9 1 2 11 17 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 1017.5 1016.5 1012.8 1008.7 1004.1 997.6 997.0 999.0 1005.3 1011.7 1015.2 1018.5 1008.7 MAX. QFE PRESSURE IN HPA 1023.5 1021.0 1016.8 1016.2 1010.4 1003.7 1003.5 1003.9 1009.1 1015.5 1022.5 1022.5 1023.5 DAY 1 1 2 6 1 1 16 21 17 31 26 4 MIN. QFE PRESSURE IN HPA 1013.4 1013.5 1008.4 1003.0 998.8 991.0 993.1 995.6 999.6 1004.7 1009.4 1013.4 991.0 DAY 26 10 30 19 30 23 22 18 1 1 11 17 MEAN QNH PRESSURE IN HPA 1017.9 1016.9 1013.1 1009.0 1004.4 997.9 997.3 999.4 1005.6 1012.0 1015.6 1018.8 1009.0 MAX. QNH PRESSURE IN HPA 1023.8 1021.3 1017.1 1016.5 1010.7 1004.0 1003.8 1004.2 1009.4 1015.8 1022.8 1022.8 1023.8 DAY 1 1 2 6 1 1 16 21 17 31 26 4 MIN. QNH PRESSURE IN HPA 1013.7 1013.8 1008.7 1003.3 999.1 991.3 993.4 995.9 999.9 1005.0 1009.7 1013.7 991.3 DAY 26 10 30 19 30 23 22 18 1 1 11 17 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 1016.2 1014.9 1010.9 1006.9 1002.6 996.2 995.5 997.4 1003.6 1010.2 1013.7 1016.9 1007.1 MAX. QFE PRESSURE IN HPA 1022.6 1018.5 1014.2 1013.9 1009.2 1001.7 1001.0 1002.2 1007.8 1013.8 1021.1 1021.1 1022.6 DAY 1 1 1 6 1 1 16 21 16 31 26 5 MIN. QFE PRESSURE IN HPA 1011.7 1011.7 1006.3 1000.4 997.3 990.4 991.0 993.9 997.9 1003.1 1007.4 1012.0 990.4 DAY 26 10 31 19 30 23 22 18 1 1 11 15 MEAN QNH PRESSURE IN HPA 1016.5 1015.3 1011.2 1007.3 1003.0 996.5 995.8 997.7 1004.0 1010.5 1014.1 1017.2 1007.4 MAX. QNH PRESSURE IN HPA 1022.9 1018.8 1014.5 1014.2 1009.5 1002.0 1001.3 1002.5 1008.1 1014.1 1021.4 1021.4 1022.9 DAY 1 1 1 6 1 1 16 21 16 31 26 5 MIN. QNH PRESSURE IN HPA 1012.0 1012.0 1006.6 1000.7 997.6 990.7 991.3 994.2 998.2 1003.4 1007.7 1012.3 990.7 DAY 26 10 31 19 30 23 22 18 1 1 11 15 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION JASK (40893) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 25 38 N LONGITUDE 57 46 E DATA PROCESSING CENTER ELEVATION 5.2 M MEANS AND EXTREMES FOR THE YEAR 1978 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 1500 UTC. MEAN QFE PRESSURE IN HPA 1017.0 1015.6 1011.3 1007.5 1003.1 996.5 996.0 997.6 1003.7 1010.7 1014.2 1017.6 1007.6 MAX. QFE PRESSURE IN HPA 1023.5 1019.1 1014.8 1013.6 1010.0 1002.0 1001.9 1001.4 1008.2 1014.5 1021.8 1022.1 1023.5 DAY 1 1 1 6 1 2 16 21 16 31 26 5 MIN. QFE PRESSURE IN HPA 1012.2 1013.3 1006.3 1001.1 998.0 991.6 990.5 993.9 997.5 1001.9 1006.9 1012.8 990.5 DAY 26 10 31 19 19 23 17 18 1 1 11 15 MEAN QNH PRESSURE IN HPA 1017.4 1015.9 1011.6 1007.8 1003.5 996.8 996.3 997.9 1004.0 1011.0 1014.6 1018.0 1007.9 MAX. QNH PRESSURE IN HPA 1023.8 1019.4 1015.1 1013.9 1010.3 1002.3 1002.2 1001.7 1008.5 1014.8 1022.1 1022.4 1023.8 DAY 1 1 1 6 1 2 16 21 16 31 26 5 MIN. QNH PRESSURE IN HPA 1012.5 1013.6 1006.6 1001.4 998.3 991.9 990.8 994.2 997.8 1002.2 1007.2 1013.1 990.8 DAY 26 10 31 19 19 23 17 18 1 1 11 15 MEAN QFF PRESSURE IN HPA 1017.7 1016.2 1011.9 1008.1 1003.7 997.1 996.5 998.2 1004.3 1011.3 1014.8 1018.2 1008.2 MAX. QFF PRESSURE IN HPA 1024.1 1019.7 1015.4 1014.2 1010.6 1002.6 1002.5 1002.0 1008.8 1015.1 1022.4 1022.7 1024.1 DAY 1 1 1 6 1 2 16 21 16 31 26 5 MIN. QFF PRESSURE IN HPA 1012.8 1013.9 1006.9 1001.7 998.6 992.2 991.1 994.5 998.1 1002.5 1007.5 1013.4 991.1 DAY 26 28 31 19 30 23 17 18 1 1 11 15 PRESSURE AT HOUR 1800 UTC. MEAN QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** PRESSURE AT HOUR 2100 UTC. MEAN QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION JASK (40893) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 25 38 N LONGITUDE 57 46 E DATA PROCESSING CENTER ELEVATION 5.2 M MEANS AND EXTREMES FOR THE YEAR 1979 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AIR TEMPERATURE (C) 22.0 22.6 23.5 27.5 30.1 ***** ***** ***** ***** ***** ***** ***** ***** MINIMUN AIR TEMPERATURE (C) 16.4 17.5 19.2 22.2 25.6 ***** ***** ***** ***** ***** ***** ***** ***** DAYS WITH MINIMUM TEMP. >=21 2 0 6 25 30 **** **** **** **** **** **** **** **** DAYS WITH MINIMUM TEMP. <=-4 0 0 0 0 0 **** **** **** **** **** **** **** **** DAYS WITH FREEZING MIN.<= 0 0 0 0 0 0 **** **** **** **** **** **** **** **** TEMPERATURE RECORDS LOWEST(C) 10.0 14.0 13.0 18.0 20.0 ***** ***** ***** ***** ***** ***** ***** ***** DAY 29 2 6 1 4 ** ** ** ** ** ** ** MAXIMUM AIR TEMPERATURE (C) 24.0 24.8 25.6 30.7 33.1 ***** ***** ***** ***** ***** ***** ***** ***** DAYS WITH MAXIMUM TEMP. >=30 0 0 0 20 29 **** **** **** **** **** **** **** **** DAYS WITH MAXIMUM TEMP. <= 0 0 0 0 0 0 **** **** **** **** **** **** **** **** TEMPERATURE RECORDS HIGHEST(C) 29.0 28.0 29.0 34.0 37.0 ***** ***** ***** ***** ***** ***** ***** ***** DAY 2 27 22 5 23 ** ** ** ** ** ** ** DIF. BETWEEN (MAX.-MIN.) (C) 7.6 7.3 6.4 8.5 7.5 ***** ***** ***** ***** ***** ***** ***** ***** MEAN DAILY TEMP. (MDT) (C) 20.2 21.1 22.4 26.4 29.3 ***** ***** ***** ***** ***** ***** ***** ***** COOLING DEG. DAYS(BASE 21 0C) 12.5 17.5 53.0 163.0 258.5 ****** ****** ****** ****** ****** ****** ****** ****** HEATING DEG. DAYS(BASE 18 0C) 5.0 0.0 0.0 0.0 0.0 ****** ****** ****** ****** ****** ****** ****** ****** DEWPOINT (MEAN C) 13.4 15.9 17.1 19.3 22.2 ***** ***** ***** ***** ***** ***** ***** ***** MIXING RATIO (G/KG) 9.89 11.53 12.59 14.34 17.63 ****** ****** ****** ****** ****** ****** ****** ****** VAPOUR PRESSURE (HPA) 15.92 18.43 20.08 22.72 27.69 ****** ****** ****** ****** ****** ****** ****** ****** SATURATION DEF. (HPA) 10.71 9.14 9.05 14.24 15.27 ****** ****** ****** ****** ****** ****** ****** ****** RELATIVE HUMIDITY (MEAN %) 60 67 69 63 65 *** *** *** *** *** *** *** *** RELATIVE HUMIDITY (MAX. %) 70 76 79 75 78 *** *** *** *** *** *** *** *** RELATIVE HUMIDITY (MIN. %) 50 58 60 52 51 *** *** *** *** *** *** *** *** RELATIVE HUMIDITY (MEAN% 03UTC) 68 75 75 69 73 *** *** *** *** *** *** *** *** RELATIVE HUMIDITY (MEAN% 09UTC) 52 59 63 56 59 *** *** *** *** *** *** *** *** RELATIVE HUMIDITY (MEAN% 15UTC) 63 71 73 69 70 *** *** *** *** *** *** *** *** RH=0 => RELATIVE HUMIDITY < 0.5% AMOUNT OF PRECIPITATION MM. 13.0 0.0 28.0 0.0 0.0 ****** ****** ****** ****** ****** ****** ****** ****** DAYS WITH PRECIPITATION >=10 0 0 1 0 0 **** **** **** **** **** **** **** **** DAYS WITH PRECIPITATION >= 5 1 0 3 0 0 **** **** **** **** **** **** **** **** DAYS WITH PRECIPITATION >= 1 3 0 4 0 0 **** **** **** **** **** **** **** **** DAYS WITH PRECIPITATION 3 0 4 0 0 **** **** **** **** **** **** **** **** GREATEST DAILY PRECIPITATION 8.0 0.0 12.0 0.0 0.0 ****** ****** ****** ****** ****** ****** ****** ****** DAY 11 ** 13 ** ** ** ** ** ** ** ** ** DAY WITH THUNDER STORM 0 0 2 0 0 **** **** **** **** **** **** **** **** DAYS WITH SNOW OR SLEET 0 0 0 0 0 **** **** **** **** **** **** **** **** DAYS WITH DUST 1 1 1 3 2 **** **** **** **** **** **** **** **** WIND DIRECTION (PREVAILING) 90 270 90 270 270 *** *** *** *** *** *** *** *** PREVAILING WIND SPEED(KNOTS) 6.1 8.5 7.3 5.6 5.3 **** **** **** **** **** **** **** **** PREVAILING WIND PERCENT 26.6 28.6 27.1 37.3 38.1 ***** ***** ***** ***** ***** ***** ***** ***** CALMS PERCENT OF WIND 0.0 2.1 1.3 4.7 5.8 ***** ***** ***** ***** ***** ***** ***** ***** NO. OF WIND OBSERVATION 154 140 155 150 155 **** **** **** **** **** **** **** 754 VECTOR WIND DIRECTION (MEAN) 58 241 151 249 240 *** *** *** *** *** *** *** *** VECTOR WIND MAGNITUDE(KNOTS) 0.1 1.2 0.6 3.1 2.5 **** **** **** **** **** **** **** **** WIND STEADINESES (MEAN %) 1.5 17.4 10.2 72.1 58.1 ***** ***** ***** ***** ***** ***** ***** ***** WIND SPEED (MEAN KNOTS) 6.8 6.9 5.9 4.3 4.3 **** **** **** **** **** **** **** **** FASTEST WIND DIRECTION 120 90 270 250 270 *** *** *** *** *** *** *** *** FASTEST WIND SPEED (KNOTS) 20 20 18 12 20 *** *** *** *** *** *** *** *** DAY 11 11 28 4 6 ** ** ** ** ** ** ** DAYS WITH SKY CLEAR (0-2)/8 24 24 19 29 30 **** **** **** **** **** **** **** **** DAYS WITH P.CLOUDY (3-6)/8 5 4 8 1 1 **** **** **** **** **** **** **** **** DAYS WITH CLOUDY (7-8)/8 2 0 4 0 0 **** **** **** **** **** **** **** **** DAYS WITH VISIBILITY =< 2 KM 0 1 0 3 1 **** **** **** **** **** **** **** **** DURATION OF SUNSHINE HOURS ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION JASK (40893) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 25 38 N LONGITUDE 57 46 E DATA PROCESSING CENTER ELEVATION 5.2 M MEANS AND EXTREMES FOR THE YEAR 1979 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL MEAN QFE PRESSURE IN HPA 1018.0 1014.1 1013.1 1009.5 1006.8 ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFE PRESSURE IN HPA 1024.7 1021.7 1021.6 1015.0 1013.9 ****** ****** ****** ****** ****** ****** ****** ****** DAY-HOUR 17- 6 2- 6 6- 6 3- 6 1- 6 **-** **-** **-** **-** **-** **-** **-** MIN. QFE PRESSURE IN HPA 1012.3 1007.3 1006.9 1003.5 1002.5 ****** ****** ****** ****** ****** ****** ****** ****** DAY-HOUR 11- 9 11-12 22-12 11-15 24-15 **-** **-** **-** **-** **-** **-** **-** MEAN QNH PRESSURE IN HPA 1018.4 1014.4 1013.4 1009.8 1007.1 ****** ****** ****** ****** ****** ****** ****** ****** MAX. QNH PRESSURE IN HPA 1025.0 1022.0 1021.9 1015.3 1014.2 ****** ****** ****** ****** ****** ****** ****** ****** DAY-HOUR 17- 6 2- 6 6- 6 3- 6 1- 6 **-** **-** **-** **-** **-** **-** **-** MIN. QNH PRESSURE IN HPA 1012.6 1007.6 1007.2 1003.8 1002.8 ****** ****** ****** ****** ****** ****** ****** ****** DAY-HOUR 11- 9 11-12 22-12 11-15 24-15 **-** **-** **-** **-** **-** **-** **-** 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 1018.6 1014.7 1013.7 1009.8 1007.2 ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFE PRESSURE IN HPA 1023.7 1020.6 1020.6 1014.2 1012.5 ****** ****** ****** ****** ****** ****** ****** ****** DAY 18 2 6 3 1 ** ** ** ** ** ** ** MIN. QFE PRESSURE IN HPA 1013.1 1009.5 1010.0 1005.1 1003.8 ****** ****** ****** ****** ****** ****** ****** ****** DAY 11 11 29 12 24 ** ** ** ** ** ** ** MEAN QNH PRESSURE IN HPA 1019.0 1015.1 1014.0 1010.1 1007.5 ****** ****** ****** ****** ****** ****** ****** ****** MAX. QNH PRESSURE IN HPA 1024.0 1020.9 1020.9 1014.5 1012.8 ****** ****** ****** ****** ****** ****** ****** ****** DAY 18 2 6 3 1 ** ** ** ** ** ** ** MIN. QNH PRESSURE IN HPA 1013.4 1009.8 1010.3 1005.4 1004.1 ****** ****** ****** ****** ****** ****** ****** ****** DAY 11 11 29 12 24 ** ** ** ** ** ** ** MEAN QFF PRESSURE IN HPA 1019.3 1015.3 1014.3 1010.4 1007.7 ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA 1024.3 1021.2 1021.2 1014.8 1013.1 ****** ****** ****** ****** ****** ****** ****** ****** DAY 18 2 6 3 1 ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA 1013.7 1010.1 1010.6 1005.7 1004.4 ****** ****** ****** ****** ****** ****** ****** ****** DAY 11 11 29 12 24 ** ** ** ** ** ** ** ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION JASK (40893) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 25 38 N LONGITUDE 57 46 E DATA PROCESSING CENTER ELEVATION 5.2 M MEANS AND EXTREMES FOR THE YEAR 1979 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 0600 UTC. MEAN QFE PRESSURE IN HPA 1019.8 1015.9 1015.1 1011.2 1008.5 ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFE PRESSURE IN HPA 1024.7 1021.7 1021.6 1015.0 1013.9 ****** ****** ****** ****** ****** ****** ****** ****** DAY 17 2 6 3 1 ** ** ** ** ** ** ** MIN. QFE PRESSURE IN HPA 1013.7 1010.3 1010.9 1006.4 1005.5 ****** ****** ****** ****** ****** ****** ****** ****** DAY 11 11 29 12 24 ** ** ** ** ** ** ** MEAN QNH PRESSURE IN HPA 1020.1 1016.2 1015.4 1011.6 1008.8 ****** ****** ****** ****** ****** ****** ****** ****** MAX. QNH PRESSURE IN HPA 1025.0 1022.0 1021.9 1015.3 1014.2 ****** ****** ****** ****** ****** ****** ****** ****** DAY 17 2 6 3 1 ** ** ** ** ** ** ** MIN. QNH PRESSURE IN HPA 1014.0 1010.6 1011.2 1006.7 1005.8 ****** ****** ****** ****** ****** ****** ****** ****** DAY 11 11 29 12 24 ** ** ** ** ** ** ** MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** PRESSURE AT HOUR 0900 UTC. MEAN QFE PRESSURE IN HPA 1018.1 1014.4 1013.3 1009.6 1007.2 ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFE PRESSURE IN HPA 1023.4 1020.6 1020.2 1013.5 1012.3 ****** ****** ****** ****** ****** ****** ****** ****** DAY 17 2 7 30 1 ** ** ** ** ** ** ** MIN. QFE PRESSURE IN HPA 1012.3 1008.6 1008.8 1005.3 1004.0 ****** ****** ****** ****** ****** ****** ****** ****** DAY 11 11 29 12 6 ** ** ** ** ** ** ** MEAN QNH PRESSURE IN HPA 1018.5 1014.7 1013.6 1009.9 1007.5 ****** ****** ****** ****** ****** ****** ****** ****** MAX. QNH PRESSURE IN HPA 1023.7 1020.9 1020.5 1013.8 1012.6 ****** ****** ****** ****** ****** ****** ****** ****** DAY 17 2 7 30 1 ** ** ** ** ** ** ** MIN. QNH PRESSURE IN HPA 1012.6 1008.9 1009.1 1005.6 1004.3 ****** ****** ****** ****** ****** ****** ****** ****** DAY 11 11 29 12 6 ** ** ** ** ** ** ** MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** PRESSURE AT HOUR 1200 UTC. MEAN QFE PRESSURE IN HPA 1016.7 1012.8 1011.6 1008.3 1005.6 ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFE PRESSURE IN HPA 1022.3 1019.5 1017.8 1012.3 1010.6 ****** ****** ****** ****** ****** ****** ****** ****** DAY 17 2 7 30 1 ** ** ** ** ** ** ** MIN. QFE PRESSURE IN HPA 1012.3 1007.3 1006.9 1003.9 1002.8 ****** ****** ****** ****** ****** ****** ****** ****** DAY 11 11 22 11 24 ** ** ** ** ** ** ** MEAN QNH PRESSURE IN HPA 1017.0 1013.1 1012.0 1008.6 1006.0 ****** ****** ****** ****** ****** ****** ****** ****** MAX. QNH PRESSURE IN HPA 1022.6 1019.8 1018.1 1012.6 1010.9 ****** ****** ****** ****** ****** ****** ****** ****** DAY 17 2 7 30 1 ** ** ** ** ** ** ** MIN. QNH PRESSURE IN HPA 1012.6 1007.6 1007.2 1004.2 1003.1 ****** ****** ****** ****** ****** ****** ****** ****** DAY 11 11 22 11 24 ** ** ** ** ** ** ** MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION JASK (40893) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 25 38 N LONGITUDE 57 46 E DATA PROCESSING CENTER ELEVATION 5.2 M MEANS AND EXTREMES FOR THE YEAR 1979 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 1500 UTC. MEAN QFE PRESSURE IN HPA 1016.9 1012.6 1011.8 1008.4 1005.8 ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFE PRESSURE IN HPA 1021.9 1018.6 1019.0 1011.7 1010.1 ****** ****** ****** ****** ****** ****** ****** ****** DAY 17 2 7 19 1 ** ** ** ** ** ** ** MIN. QFE PRESSURE IN HPA 1012.3 1007.6 1007.7 1003.5 1002.5 ****** ****** ****** ****** ****** ****** ****** ****** DAY 11 17 28 11 24 ** ** ** ** ** ** ** MEAN QNH PRESSURE IN HPA 1017.2 1012.9 1012.2 1008.8 1006.1 ****** ****** ****** ****** ****** ****** ****** ****** MAX. QNH PRESSURE IN HPA 1022.2 1018.9 1019.3 1012.0 1010.4 ****** ****** ****** ****** ****** ****** ****** ****** DAY 17 2 7 19 1 ** ** ** ** ** ** ** MIN. QNH PRESSURE IN HPA 1012.6 1007.9 1008.0 1003.8 1002.8 ****** ****** ****** ****** ****** ****** ****** ****** DAY 11 17 28 11 24 ** ** ** ** ** ** ** MEAN QFF PRESSURE IN HPA 1017.5 1013.2 1012.4 1009.0 1006.3 ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA 1022.5 1019.2 1019.6 1012.3 1010.7 ****** ****** ****** ****** ****** ****** ****** ****** DAY 17 2 7 30 1 ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA 1012.9 1008.2 1008.3 1004.1 1003.1 ****** ****** ****** ****** ****** ****** ****** ****** DAY 11 17 28 11 24 ** ** ** ** ** ** ** PRESSURE AT HOUR 1800 UTC. MEAN QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** PRESSURE AT HOUR 2100 UTC. MEAN QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION JASK (40893) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 25 38 N LONGITUDE 57 46 E DATA PROCESSING CENTER ELEVATION 5.2 M MEANS AND EXTREMES FOR THE YEAR 1980 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 JASK (40893) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 25 38 N LONGITUDE 57 46 E DATA PROCESSING CENTER ELEVATION 5.2 M MEANS AND EXTREMES FOR THE YEAR 1980 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. 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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 JASK (40893) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 25 38 N LONGITUDE 57 46 E DATA PROCESSING CENTER ELEVATION 5.2 M MEANS AND EXTREMES FOR THE YEAR 1980 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. 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QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION JASK (40893) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 25 38 N LONGITUDE 57 46 E DATA PROCESSING CENTER ELEVATION 5.2 M MEANS AND EXTREMES FOR THE YEAR 1980 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. 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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 JASK (40893) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 25 38 N LONGITUDE 57 46 E DATA PROCESSING CENTER ELEVATION 5.2 M MEANS AND EXTREMES FOR THE YEAR 1981 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 JASK (40893) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 25 38 N LONGITUDE 57 46 E DATA PROCESSING CENTER ELEVATION 5.2 M MEANS AND EXTREMES FOR THE YEAR 1981 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. 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QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION JASK (40893) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 25 38 N LONGITUDE 57 46 E DATA PROCESSING CENTER ELEVATION 5.2 M MEANS AND EXTREMES FOR THE YEAR 1981 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 JASK (40893) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 25 38 N LONGITUDE 57 46 E DATA PROCESSING CENTER ELEVATION 5.2 M MEANS AND EXTREMES FOR THE YEAR 1981 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 JASK (40893) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 25 38 N LONGITUDE 57 46 E DATA PROCESSING CENTER ELEVATION 5.2 M MEANS AND EXTREMES FOR THE YEAR 1982 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 JASK (40893) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 25 38 N LONGITUDE 57 46 E DATA PROCESSING CENTER ELEVATION 5.2 M MEANS AND EXTREMES FOR THE YEAR 1982 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 JASK (40893) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 25 38 N LONGITUDE 57 46 E DATA PROCESSING CENTER ELEVATION 5.2 M MEANS AND EXTREMES FOR THE YEAR 1982 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 JASK (40893) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 25 38 N LONGITUDE 57 46 E DATA PROCESSING CENTER ELEVATION 5.2 M MEANS AND EXTREMES FOR THE YEAR 1982 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 JASK (40893) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 25 38 N LONGITUDE 57 46 E DATA PROCESSING CENTER ELEVATION 5.2 M MEANS AND EXTREMES FOR THE YEAR 1983 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 JASK (40893) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 25 38 N LONGITUDE 57 46 E DATA PROCESSING CENTER ELEVATION 5.2 M MEANS AND EXTREMES FOR THE YEAR 1983 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 JASK (40893) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 25 38 N LONGITUDE 57 46 E DATA PROCESSING CENTER ELEVATION 5.2 M MEANS AND EXTREMES FOR THE YEAR 1983 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. 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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 JASK (40893) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 25 38 N LONGITUDE 57 46 E DATA PROCESSING CENTER ELEVATION 5.2 M MEANS AND EXTREMES FOR THE YEAR 1983 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 JASK (40893) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 25 38 N LONGITUDE 57 46 E DATA PROCESSING CENTER ELEVATION 5.2 M MEANS AND EXTREMES FOR THE YEAR 1984 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 JASK (40893) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 25 38 N LONGITUDE 57 46 E DATA PROCESSING CENTER ELEVATION 5.2 M MEANS AND EXTREMES FOR THE YEAR 1984 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 JASK (40893) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 25 38 N LONGITUDE 57 46 E DATA PROCESSING CENTER ELEVATION 5.2 M MEANS AND EXTREMES FOR THE YEAR 1984 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 JASK (40893) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 25 38 N LONGITUDE 57 46 E DATA PROCESSING CENTER ELEVATION 5.2 M MEANS AND EXTREMES FOR THE YEAR 1984 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 JASK (40893) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 25 38 N LONGITUDE 57 46 E DATA PROCESSING CENTER ELEVATION 5.2 M MEANS AND EXTREMES FOR THE YEAR 1985 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AIR TEMPERATURE (C) 21.5 22.1 24.4 26.8 29.8 32.6 30.8 31.5 30.0 29.0 25.9 22.5 27.3 MINIMUN AIR TEMPERATURE (C) 18.7 18.5 20.7 22.9 26.0 29.2 28.9 29.5 27.8 25.5 21.9 18.7 24.0 DAYS WITH MINIMUM TEMP. >=21 4 3 17 26 31 30 31 31 30 31 22 7 263 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) 15.2 16.0 17.0 19.0 22.5 26.5 26.5 28.0 26.0 22.0 18.5 15.0 15.0 DAY 1 8 12 1 3 3 8 19 21 31 26 9 MAXIMUM AIR TEMPERATURE (C) 24.2 25.1 27.2 29.6 32.8 35.4 32.5 33.1 31.7 31.3 29.1 25.7 29.8 DAYS WITH MAXIMUM TEMP. >=30 0 0 3 13 26 30 31 31 29 25 10 0 198 DAYS WITH MAXIMUM TEMP. <= 0 0 0 0 0 0 0 0 0 0 0 0 0 0 TEMPERATURE RECORDS HIGHEST(C) 27.6 26.8 32.4 33.6 42.2 43.0 38.0 40.2 36.0 34.6 33.6 28.8 43.0 DAY 31 4 24 24 24 8 3 14 4 7 10 2 DIF. BETWEEN (MAX.-MIN.) (C) 5.5 6.6 6.5 6.7 6.8 6.2 3.6 3.6 3.9 5.8 7.2 7.0 5.8 MEAN DAILY TEMP. (MDT) (C) 21.4 21.8 24.0 26.2 29.4 32.3 30.7 31.3 29.7 28.4 25.5 22.2 26.9 COOLING DEG. DAYS(BASE 21 0C) 24.5 24.9 92.5 156.6 259.0 338.3 300.5 320.4 262.4 229.0 135.7 43.1 2187.2 HEATING DEG. DAYS(BASE 18 0C) 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 DEWPOINT (MEAN C) 17.0 14.5 17.7 20.1 23.7 25.6 26.8 26.9 26.3 23.0 18.6 15.8 21.3 MIXING RATIO (G/KG) 12.25 10.60 13.17 15.15 19.12 21.45 22.92 23.30 21.99 18.03 13.72 11.55 16.94 VAPOUR PRESSURE (HPA) 19.60 16.93 20.92 23.93 29.87 33.23 35.42 36.04 34.28 28.44 21.86 18.51 26.59 SATURATION DEF. (HPA) 6.17 9.89 9.89 11.58 12.48 16.41 9.14 10.48 8.16 11.88 11.86 9.06 10.58 RELATIVE HUMIDITY (MEAN %) 76 64 68 68 72 69 80 79 81 71 65 67 72 RELATIVE HUMIDITY (MAX. %) 85 76 77 79 82 80 84 86 89 80 76 76 81 RELATIVE HUMIDITY (MIN. %) 69 53 57 58 60 59 75 71 75 64 54 59 63 RELATIVE HUMIDITY (MEAN% 03UTC) 82 74 70 73 73 75 81 81 89 76 71 75 77 RELATIVE HUMIDITY (MEAN% 09UTC) 72 55 64 67 74 68 80 79 78 68 62 62 69 RELATIVE HUMIDITY (MEAN% 15UTC) 77 63 72 71 74 66 82 80 78 73 67 68 73 RH=0 => RELATIVE HUMIDITY < 0.5% AMOUNT OF PRECIPITATION MM. 11.0 0.0 8.0 0.0 0.0 0.0 0.3 0.0 0.0 0.0 0.0 4.6 23.9 DAYS WITH PRECIPITATION >=10 1 0 0 0 0 0 0 0 0 0 0 0 1 DAYS WITH PRECIPITATION >= 5 1 0 0 0 0 0 0 0 0 0 0 0 1 DAYS WITH PRECIPITATION >= 1 1 0 2 0 0 0 0 0 0 0 0 1 4 DAYS WITH PRECIPITATION 1 0 2 0 0 0 1 0 0 0 0 2 6 GREATEST DAILY PRECIPITATION 11.0 0.0 4.0 0.0 0.0 0.0 0.3 0.0 0.0 0.0 0.0 4.0 11.0 DAY 6 ** 30 ** ** ** 31 ** ** ** ** 21 DAY WITH THUNDER STORM 0 0 0 0 0 0 0 0 0 0 0 0 0 DAYS WITH SNOW OR SLEET 0 0 0 0 0 0 0 0 0 0 0 0 0 DAYS WITH DUST 2 15 13 15 8 8 11 4 1 2 5 5 89 WIND DIRECTION (PREVAILING) 90 270 270 270 270 270 135 135 90 90 270 135 270 PREVAILING WIND SPEED(KNOTS) 12.6 15.4 15.3 13.4 11.4 13.6 14.9 12.3 13.7 9.9 12.6 10.1 13.4 PREVAILING WIND PERCENT 29.0 40.0 34.2 54.7 41.9 26.0 36.8 30.3 30.0 23.2 22.7 19.4 24.7 CALMS PERCENT OF WIND 7.7 5.0 3.9 1.3 1.9 2.0 0.0 7.1 2.0 1.3 1.3 2.6 3.0 NO. OF WIND OBSERVATION 155 140 155 150 155 150 155 155 150 155 150 155 1825 VECTOR WIND DIRECTION (MEAN) 113 286 278 268 263 215 140 140 135 169 249 246 212 VECTOR WIND MAGNITUDE(KNOTS) 3.2 7.8 6.1 7.6 4.1 2.7 7.1 6.3 7.0 3.6 3.2 0.9 2.1 WIND STEADINESES (MEAN %) 37.2 69.0 59.8 71.0 49.4 24.8 53.8 60.0 65.4 40.4 40.5 8.8 20.8 WIND SPEED (MEAN KNOTS) 8.6 11.3 10.2 10.7 8.3 10.9 13.2 10.5 10.7 8.9 7.9 10.2 10.1 FASTEST WIND DIRECTION 100 260 330 280 280 300 100 120 90 90 280 290 290 FASTEST WIND SPEED (KNOTS) 27 29 29 29 25 27 29 21 25 23 27 31 31 DAY 3 17 30 8 20 8 26 8 20 2 16 28 DAYS WITH SKY CLEAR (0-2)/8 11 27 13 22 22 29 14 20 26 31 24 15 254 DAYS WITH P.CLOUDY (3-6)/8 15 1 15 6 7 1 8 11 4 0 6 14 88 DAYS WITH CLOUDY (7-8)/8 5 0 3 2 2 0 9 0 0 0 0 2 23 DAYS WITH VISIBILITY =< 2 KM 0 3 1 6 10 4 9 14 0 0 3 1 51 DURATION OF SUNSHINE HOURS 219.4 263.6 239.2 258.9 210.3 257.2 142.1 230.1 276.0 285.1 266.0 227.9 2875.8 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION JASK (40893) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 25 38 N LONGITUDE 57 46 E DATA PROCESSING CENTER ELEVATION 5.2 M MEANS AND EXTREMES FOR THE YEAR 1985 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL MEAN QFE PRESSURE IN HPA 1015.9 1012.1 1011.2 1007.3 1002.7 997.4 997.0 999.0 1004.4 1010.2 1014.2 1016.6 1007.3 MAX. QFE PRESSURE IN HPA 1022.3 1017.9 1019.3 1014.3 1008.8 1003.2 1002.7 1003.7 1010.6 1016.7 1019.2 1022.5 1022.5 DAY-HOUR 13- 6 20- 9 12- 6 21- 6 9- 6 14- 6 23- 6 30- 6 22- 6 26- 6 27- 6 8- 6 MIN. QFE PRESSURE IN HPA 1011.0 1006.7 1003.4 1002.4 994.8 992.6 991.7 993.7 997.7 1004.5 1008.0 1010.0 991.7 DAY-HOUR 31-12 6-12 23-12 24-15 28-15 24-15 7-12 1-15 5-15 8-15 6-12 5-15 MEAN QNH PRESSURE IN HPA 1016.3 1012.4 1011.5 1007.6 1003.0 997.8 997.3 999.3 1004.7 1010.5 1014.5 1016.9 1007.6 MAX. QNH PRESSURE IN HPA 1022.6 1018.2 1019.6 1014.6 1009.1 1003.5 1003.0 1004.0 1010.9 1017.0 1019.5 1022.8 1022.8 DAY-HOUR 13- 6 20- 9 12- 6 21- 6 9- 6 14- 6 23- 6 30- 6 22- 6 26- 6 27- 6 8- 6 MIN. QNH PRESSURE IN HPA 1011.3 1007.0 1003.7 1002.7 995.1 992.9 992.0 994.0 998.0 1004.8 1008.3 1010.3 992.0 DAY-HOUR 31-12 6-12 23-12 24-15 28-15 24-15 7-12 1-15 5-15 8-15 6-12 5-15 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY-HOUR **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY-HOUR **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** PRESSURE AT HOUR 0000 UTC. MEAN QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** PRESSURE AT HOUR 0300 UTC. MEAN QFE PRESSURE IN HPA 1015.9 1011.9 1011.0 1007.2 1002.6 997.7 997.5 999.2 1004.5 1010.2 1014.2 1016.8 1007.4 MAX. QFE PRESSURE IN HPA 1019.9 1015.5 1017.1 1012.3 1008.1 1001.9 1002.0 1002.4 1009.5 1015.1 1017.9 1021.1 1021.1 DAY 13 20 12 21 8 14 23 31 22 27 27 8 MIN. QFE PRESSURE IN HPA 1012.0 1008.3 1004.5 1003.5 996.5 994.3 993.5 996.3 999.0 1004.8 1010.2 1012.9 993.5 DAY 31 6 24 25 29 28 7 2 5 8 10 6 MEAN QNH PRESSURE IN HPA 1016.2 1012.2 1011.3 1007.5 1002.9 998.0 997.8 999.5 1004.9 1010.5 1014.5 1017.2 1007.7 MAX. QNH PRESSURE IN HPA 1020.2 1015.8 1017.4 1012.6 1008.4 1002.2 1002.3 1002.7 1009.8 1015.4 1018.2 1021.4 1021.4 DAY 13 20 12 21 8 14 23 31 22 27 27 8 MIN. QNH PRESSURE IN HPA 1012.3 1008.6 1004.8 1003.8 996.8 994.6 993.8 996.6 999.3 1005.1 1010.5 1013.2 993.8 DAY 31 6 24 25 29 28 7 2 5 8 10 6 MEAN QFF PRESSURE IN HPA 1016.5 1012.6 1011.5 1007.9 1003.5 998.2 997.9 999.8 1005.0 1010.8 1014.8 1017.3 1008.0 MAX. QFF PRESSURE IN HPA 1020.5 1016.1 1017.7 1012.9 1008.7 1002.5 1002.6 1003.0 1010.1 1015.7 1018.5 1020.3 1020.5 DAY 13 20 12 21 8 14 23 31 22 27 27 31 MIN. QFF PRESSURE IN HPA 1012.6 1008.9 1005.1 1004.1 997.1 994.9 994.1 996.9 999.6 1005.4 1010.8 1013.5 994.1 DAY 31 6 24 25 29 28 7 2 5 8 10 6 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION JASK (40893) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 25 38 N LONGITUDE 57 46 E DATA PROCESSING CENTER ELEVATION 5.2 M MEANS AND EXTREMES FOR THE YEAR 1985 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 0600 UTC. MEAN QFE PRESSURE IN HPA 1017.7 1013.7 1012.9 1008.8 1004.1 998.7 998.4 1000.5 1005.9 1011.9 1015.9 1018.4 1008.9 MAX. QFE PRESSURE IN HPA 1022.3 1017.7 1019.3 1014.3 1008.8 1003.2 1002.7 1003.7 1010.6 1016.7 1019.2 1022.5 1022.5 DAY 13 20 12 21 9 14 23 30 22 26 27 8 MIN. QFE PRESSURE IN HPA 1013.7 1010.2 1006.2 1005.1 998.5 995.1 994.5 997.4 1000.7 1006.9 1011.7 1014.6 994.5 DAY 31 16 24 25 28 24 7 7 5 8 6 5 MEAN QNH PRESSURE IN HPA 1018.0 1014.1 1013.2 1009.1 1004.4 999.0 998.7 1000.9 1006.3 1012.2 1016.3 1018.7 1009.2 MAX. QNH PRESSURE IN HPA 1022.6 1018.0 1019.6 1014.6 1009.1 1003.5 1003.0 1004.0 1010.9 1017.0 1019.5 1022.8 1022.8 DAY 13 20 12 21 9 14 23 30 22 26 27 8 MIN. QNH PRESSURE IN HPA 1014.0 1010.5 1006.5 1005.4 998.8 995.4 994.8 997.7 1001.0 1007.2 1012.0 1014.9 994.8 DAY 31 16 24 25 28 24 7 7 5 8 6 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 1016.5 1013.0 1012.3 1008.2 1003.7 998.3 997.8 999.8 1005.3 1011.1 1014.9 1016.9 1008.2 MAX. QFE PRESSURE IN HPA 1020.6 1017.9 1018.9 1014.2 1008.4 1002.7 1002.4 1003.1 1009.8 1016.0 1018.6 1021.3 1021.3 DAY 13 20 12 21 8 14 23 30 22 26 26 8 MIN. QFE PRESSURE IN HPA 1013.4 1009.1 1005.7 1004.9 997.9 994.4 992.7 996.3 999.9 1006.8 1010.3 1012.7 992.7 DAY 31 6 24 24 28 24 7 1 5 8 6 5 MEAN QNH PRESSURE IN HPA 1016.9 1013.4 1012.6 1008.5 1004.0 998.6 998.1 1000.1 1005.6 1011.4 1015.2 1017.2 1008.5 MAX. QNH PRESSURE IN HPA 1020.9 1018.2 1019.2 1014.5 1008.7 1003.0 1002.7 1003.4 1010.1 1016.3 1018.9 1021.6 1021.6 DAY 13 20 12 21 8 14 23 30 22 26 26 8 MIN. QNH PRESSURE IN HPA 1013.7 1009.4 1006.0 1005.2 998.2 994.7 993.0 996.6 1000.2 1007.1 1010.6 1013.0 993.0 DAY 31 6 24 24 28 24 7 1 5 8 6 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 1014.7 1010.7 1009.8 1006.3 1001.9 996.6 996.0 998.0 1003.3 1009.0 1012.9 1015.2 1006.2 MAX. QFE PRESSURE IN HPA 1018.6 1015.6 1016.3 1012.2 1007.4 1001.0 1001.0 1001.5 1007.2 1014.1 1016.3 1018.7 1018.7 DAY 13 20 12 21 8 14 23 30 22 26 26 8 MIN. QFE PRESSURE IN HPA 1011.0 1006.7 1003.4 1002.8 996.1 993.1 991.7 994.4 998.4 1005.0 1008.0 1010.2 991.7 DAY 31 6 23 24 28 24 7 6 5 8 6 5 MEAN QNH PRESSURE IN HPA 1015.0 1011.1 1010.1 1006.6 1002.2 997.0 996.3 998.3 1003.6 1009.3 1013.2 1015.5 1006.5 MAX. QNH PRESSURE IN HPA 1018.9 1015.9 1016.6 1012.5 1007.7 1001.3 1001.3 1001.8 1007.5 1014.4 1016.6 1019.0 1019.0 DAY 13 20 12 21 8 14 23 30 22 26 26 8 MIN. QNH PRESSURE IN HPA 1011.3 1007.0 1003.7 1003.1 996.4 993.4 992.0 994.7 998.7 1005.3 1008.3 1010.5 992.0 DAY 31 6 23 24 28 24 7 6 5 8 6 5 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION JASK (40893) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 25 38 N LONGITUDE 57 46 E DATA PROCESSING CENTER ELEVATION 5.2 M MEANS AND EXTREMES FOR THE YEAR 1985 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 1500 UTC. MEAN QFE PRESSURE IN HPA 1015.0 1011.0 1009.9 1006.1 1001.4 995.9 995.3 997.5 1002.9 1009.0 1013.0 1015.8 1006.1 MAX. QFE PRESSURE IN HPA 1018.6 1015.5 1016.2 1011.8 1006.8 1000.0 1000.5 1001.4 1007.3 1014.1 1016.3 1019.6 1019.6 DAY 13 20 5 21 8 14 23 30 21 26 26 31 MIN. QFE PRESSURE IN HPA 1011.1 1007.0 1003.4 1002.4 994.8 992.6 991.8 993.7 997.7 1004.5 1008.4 1010.0 991.8 DAY 31 16 23 24 28 24 10 1 5 8 10 5 MEAN QNH PRESSURE IN HPA 1015.3 1011.3 1010.2 1006.4 1001.7 996.2 995.7 997.8 1003.2 1009.3 1013.4 1016.1 1006.4 MAX. QNH PRESSURE IN HPA 1018.9 1015.8 1016.5 1012.1 1007.1 1000.3 1000.8 1001.7 1007.6 1014.4 1016.6 1019.9 1019.9 DAY 13 20 5 21 8 14 23 30 21 26 26 31 MIN. QNH PRESSURE IN HPA 1011.4 1007.3 1003.7 1002.7 995.1 992.9 992.1 994.0 998.0 1004.8 1008.7 1010.3 992.1 DAY 31 16 23 24 28 24 10 1 5 8 10 5 MEAN QFF PRESSURE IN HPA 1015.6 1011.6 1010.3 1006.8 1002.3 996.4 995.8 998.1 1003.4 1009.6 1013.6 1016.3 1006.6 MAX. QFF PRESSURE IN HPA 1019.2 1016.1 1016.8 1012.4 1007.4 1000.6 1001.1 1002.0 1007.9 1014.7 1016.9 1020.2 1020.2 DAY 13 20 5 21 8 14 23 30 21 26 26 31 MIN. QFF PRESSURE IN HPA 1011.7 1007.6 1004.0 1003.0 995.4 993.2 992.4 994.3 998.3 1005.1 1009.0 1010.6 992.4 DAY 31 16 23 24 28 24 10 1 5 8 10 5 PRESSURE AT HOUR 1800 UTC. MEAN QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** PRESSURE AT HOUR 2100 UTC. MEAN QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION JASK (40893) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 25 38 N LONGITUDE 57 46 E DATA PROCESSING CENTER ELEVATION 5.2 M MEANS AND EXTREMES FOR THE YEAR 1986 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AIR TEMPERATURE (C) 20.4 20.7 23.2 27.7 30.9 31.9 32.5 30.4 31.4 28.9 25.5 21.4 27.1 MINIMUN AIR TEMPERATURE (C) 15.6 16.3 20.2 24.5 27.4 30.2 30.9 29.0 28.5 26.0 21.8 17.9 24.0 DAYS WITH MINIMUM TEMP. >=21 0 0 12 30 31 30 31 31 30 31 20 6 252 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) 12.0 8.0 17.4 22.0 24.0 24.5 28.5 27.0 26.5 22.4 17.0 11.0 8.0 DAY 22 3 18 1 5 6 30 17 17 27 25 13 MAXIMUM AIR TEMPERATURE (C) 23.9 23.3 25.3 30.7 33.9 33.3 34.0 32.0 34.0 31.7 28.1 24.4 29.5 DAYS WITH MAXIMUM TEMP. >=30 0 0 0 16 29 30 31 31 29 24 7 0 197 DAYS WITH MAXIMUM TEMP. <= 0 0 0 0 0 0 0 0 0 0 0 0 0 0 TEMPERATURE RECORDS HIGHEST(C) 26.6 26.6 28.0 34.8 37.6 37.2 40.0 39.0 37.2 37.6 32.4 26.6 40.0 DAY 7 28 31 3 13 21 17 10 3 11 3 3 DIF. BETWEEN (MAX.-MIN.) (C) 8.3 7.0 5.1 6.2 6.5 3.1 3.1 3.0 5.5 5.7 6.3 6.5 5.5 MEAN DAILY TEMP. (MDT) (C) 19.7 19.8 22.8 27.6 30.6 31.7 32.4 30.5 31.3 28.8 24.9 21.2 26.8 COOLING DEG. DAYS(BASE 21 0C) 4.1 3.4 55.4 197.7 298.8 322.3 354.7 293.3 307.6 242.8 118.7 30.3 2229.3 HEATING DEG. DAYS(BASE 18 0C) 3.5 5.8 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 3.2 12.5 DEWPOINT (MEAN C) 10.9 13.9 15.8 19.6 23.8 28.1 28.6 27.3 25.6 23.4 18.4 15.0 20.9 MIXING RATIO (G/KG) 8.44 10.07 11.42 14.63 19.29 24.63 25.50 23.54 21.27 18.57 13.65 11.00 16.83 VAPOUR PRESSURE (HPA) 13.60 16.15 18.22 23.13 30.16 37.98 39.27 36.48 33.23 29.26 21.75 17.67 26.41 SATURATION DEF. (HPA) 10.66 8.45 10.29 14.21 14.88 9.35 9.88 7.01 13.03 11.00 11.14 8.12 10.67 RELATIVE HUMIDITY (MEAN %) 57 66 64 63 68 80 81 84 73 74 67 68 70 RELATIVE HUMIDITY (MAX. %) 72 77 74 75 82 86 87 90 84 85 77 78 81 RELATIVE HUMIDITY (MIN. %) 45 57 55 51 54 75 75 79 61 63 57 60 61 RELATIVE HUMIDITY (MEAN% 03UTC) 67 74 69 69 71 85 83 88 75 79 73 77 76 RELATIVE HUMIDITY (MEAN% 09UTC) 48 62 62 62 68 79 79 83 73 72 61 62 68 RELATIVE HUMIDITY (MEAN% 15UTC) 62 67 67 62 70 81 83 84 76 78 71 68 72 RH=0 => RELATIVE HUMIDITY < 0.5% AMOUNT OF PRECIPITATION MM. 46.0 65.0 11.0 0.0 0.0 5.0 0.0 0.0 0.0 0.0 43.0 10.0 180.0 DAYS WITH PRECIPITATION >=10 1 3 0 0 0 0 0 0 0 0 1 0 5 DAYS WITH PRECIPITATION >= 5 2 3 1 0 0 0 0 0 0 0 1 0 7 DAYS WITH PRECIPITATION >= 1 2 5 2 0 0 2 0 0 0 0 3 4 18 DAYS WITH PRECIPITATION 2 5 2 0 0 2 0 0 0 0 3 4 18 GREATEST DAILY PRECIPITATION 40.0 25.0 9.0 0.0 0.0 3.0 0.0 0.0 0.0 0.0 38.0 4.0 40.0 DAY 13 16 16 ** ** 6 ** ** ** ** 25 7 DAY WITH THUNDER STORM 0 0 0 0 0 0 0 0 0 0 1 0 1 DAYS WITH SNOW OR SLEET 0 0 0 0 0 0 0 0 0 0 0 0 0 DAYS WITH DUST 6 12 21 21 16 21 31 11 17 15 5 12 188 WIND DIRECTION (PREVAILING) 270 270 270 270 270 135 135 135 270 270 270 90 270 PREVAILING WIND SPEED(KNOTS) 12.6 13.7 13.4 13.0 13.0 14.8 16.0 12.9 12.3 10.3 11.7 14.4 12.5 PREVAILING WIND PERCENT 18.7 20.0 30.3 46.0 45.8 30.0 41.9 43.2 29.3 29.7 24.7 18.7 23.8 CALMS PERCENT OF WIND 5.2 5.0 11.0 12.0 9.0 7.3 1.3 0.0 4.7 14.8 6.7 2.6 6.6 NO. OF WIND OBSERVATION 155 140 155 150 155 150 155 155 150 155 150 155 1825 VECTOR WIND DIRECTION (MEAN) 265 223 248 279 274 145 138 141 239 255 242 112 199 VECTOR WIND MAGNITUDE(KNOTS) 1.9 1.3 2.6 7.5 5.7 7.3 8.9 8.4 3.1 2.4 2.1 1.7 2.1 WIND STEADINESES (MEAN %) 23.5 13.5 27.1 79.8 56.4 64.6 64.5 72.4 36.0 32.9 28.4 18.9 21.6 WIND SPEED (MEAN KNOTS) 8.1 9.6 9.6 9.4 10.1 11.3 13.8 11.6 8.6 7.3 7.4 9.0 9.7 FASTEST WIND DIRECTION 290 270 100 280 270 90 110 120 280 270 270 100 90 FASTEST WIND SPEED (KNOTS) 35 29 27 29 27 37 37 27 27 19 21 31 37 DAY 21 2 26 24 1 5 20 6 30 7 5 2 DAYS WITH SKY CLEAR (0-2)/8 26 12 17 10 30 25 21 15 28 26 18 12 240 DAYS WITH P.CLOUDY (3-6)/8 4 14 12 15 1 5 10 13 2 5 10 14 105 DAYS WITH CLOUDY (7-8)/8 1 2 2 5 0 0 0 3 0 0 2 5 20 DAYS WITH VISIBILITY =< 2 KM 2 0 0 1 3 2 5 3 2 3 0 0 21 DURATION OF SUNSHINE HOURS 259.5 231.8 263.9 228.0 338.5 215.3 177.4 207.5 295.9 283.7 241.2 208.9 2951.6 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION JASK (40893) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 25 38 N LONGITUDE 57 46 E DATA PROCESSING CENTER ELEVATION 5.2 M MEANS AND EXTREMES FOR THE YEAR 1986 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL MEAN QFE PRESSURE IN HPA 1017.3 1014.6 1011.2 1007.2 1004.0 997.3 997.7 1000.6 1005.6 1010.5 1014.4 1018.0 1008.2 MAX. QFE PRESSURE IN HPA 1023.2 1021.3 1017.5 1012.9 1009.0 1008.6 1004.2 1006.2 1012.3 1019.2 1021.3 1022.8 1023.2 DAY-HOUR 25- 6 21- 6 3- 6 15- 6 4- 6 2- 6 31- 6 30- 6 17- 6 20- 6 29- 6 18- 6 MIN. QFE PRESSURE IN HPA 1010.8 1009.2 1006.1 1001.5 998.9 989.1 990.2 993.1 999.3 1002.9 1007.2 1012.3 989.1 DAY-HOUR 20-12 16-12 11-12 24-15 26-15 21-15 18-15 10-12 5-12 9-12 7-12 10-12 MEAN QNH PRESSURE IN HPA 1017.6 1014.9 1011.5 1007.5 1004.4 997.7 998.1 1000.9 1005.9 1010.8 1014.7 1018.3 1008.5 MAX. QNH PRESSURE IN HPA 1023.5 1021.6 1017.8 1013.2 1009.3 1008.9 1004.5 1006.5 1012.6 1019.5 1021.6 1023.1 1023.5 DAY-HOUR 25- 6 21- 6 3- 6 15- 6 4- 6 2- 6 31- 6 30- 6 17- 6 20- 6 29- 6 18- 6 MIN. QNH PRESSURE IN HPA 1011.1 1009.5 1006.4 1001.8 999.2 989.4 990.5 993.4 999.6 1003.2 1007.5 1012.6 989.4 DAY-HOUR 20-12 16-12 11-12 24-15 26-15 21-15 18-15 10-12 5-12 9-12 7-12 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 1017.4 1014.6 1011.2 1007.1 1004.3 997.9 998.2 1001.1 1005.9 1010.6 1014.5 1018.1 1008.4 MAX. QFE PRESSURE IN HPA 1021.5 1019.4 1015.0 1011.9 1007.5 1007.1 1003.2 1005.1 1011.1 1017.3 1019.7 1021.0 1021.5 DAY 25 22 3 15 5 2 31 30 17 20 28 22 MIN. QFE PRESSURE IN HPA 1011.8 1010.1 1006.7 1002.8 1000.6 991.9 991.4 995.0 1000.7 1005.3 1009.0 1013.9 991.4 DAY 20 16 12 25 31 27 19 10 5 9 7 5 MEAN QNH PRESSURE IN HPA 1017.7 1015.0 1011.5 1007.4 1004.6 998.2 998.5 1001.4 1006.2 1010.9 1014.8 1018.4 1008.7 MAX. QNH PRESSURE IN HPA 1021.8 1019.7 1015.3 1012.2 1007.8 1007.4 1003.5 1005.4 1011.4 1017.6 1020.0 1021.3 1021.8 DAY 25 22 3 15 5 2 31 30 17 20 28 22 MIN. QNH PRESSURE IN HPA 1012.1 1010.4 1007.0 1003.1 1000.9 992.2 991.7 995.3 1001.0 1005.6 1009.3 1014.2 991.7 DAY 20 16 12 25 31 27 19 10 5 9 7 5 MEAN QFF PRESSURE IN HPA 1018.0 1015.2 1011.8 1007.7 1004.8 998.5 998.7 1001.7 1006.5 1011.2 1015.1 1018.7 1009.0 MAX. QFF PRESSURE IN HPA 1022.1 1020.0 1015.6 1012.5 1008.1 1007.7 1003.8 1005.7 1011.7 1017.9 1020.3 1021.6 1022.1 DAY 25 22 3 15 5 2 31 30 17 20 28 22 MIN. QFF PRESSURE IN HPA 1012.4 1010.7 1007.3 1003.4 1001.2 992.5 992.0 995.6 1001.3 1005.9 1009.6 1014.5 992.0 DAY 20 16 12 25 31 27 19 10 5 9 7 5 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION JASK (40893) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 25 38 N LONGITUDE 57 46 E DATA PROCESSING CENTER ELEVATION 5.2 M MEANS AND EXTREMES FOR THE YEAR 1986 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 0600 UTC. MEAN QFE PRESSURE IN HPA 1019.3 1016.4 1013.0 1008.7 1005.5 998.7 999.1 1002.2 1007.2 1012.3 1016.1 1019.9 1009.9 MAX. QFE PRESSURE IN HPA 1023.2 1021.3 1017.5 1012.9 1009.0 1008.6 1004.2 1006.2 1012.3 1019.2 1021.3 1022.8 1023.2 DAY 25 21 3 15 4 2 31 30 17 20 29 18 MIN. QFE PRESSURE IN HPA 1013.9 1012.0 1009.0 1004.4 1001.4 993.0 992.1 995.7 1001.8 1006.7 1010.6 1015.3 992.1 DAY 20 16 12 18 31 27 19 10 5 9 7 5 MEAN QNH PRESSURE IN HPA 1019.6 1016.7 1013.3 1009.0 1005.8 999.0 999.4 1002.5 1007.5 1012.6 1016.5 1020.2 1010.2 MAX. QNH PRESSURE IN HPA 1023.5 1021.6 1017.8 1013.2 1009.3 1008.9 1004.5 1006.5 1012.6 1019.5 1021.6 1023.1 1023.5 DAY 25 21 3 15 4 2 31 30 17 20 29 18 MIN. QNH PRESSURE IN HPA 1014.2 1012.3 1009.3 1004.7 1001.7 993.3 992.4 996.0 1002.1 1007.0 1010.9 1015.6 992.4 DAY 20 16 12 18 31 27 19 10 5 9 7 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 1017.3 1015.1 1011.8 1007.9 1004.8 997.9 998.4 1001.3 1006.2 1011.1 1014.7 1018.3 1008.7 MAX. QFE PRESSURE IN HPA 1021.5 1020.4 1015.7 1012.2 1008.5 1007.8 1002.9 1005.5 1011.3 1018.3 1019.9 1021.3 1021.5 DAY 25 21 3 15 4 2 31 30 17 20 29 28 MIN. QFE PRESSURE IN HPA 1012.0 1011.0 1007.9 1003.6 1000.9 992.3 991.8 995.1 1000.9 1004.8 1009.2 1013.4 991.8 DAY 20 16 12 18 27 21 19 10 5 9 7 5 MEAN QNH PRESSURE IN HPA 1017.7 1015.4 1012.2 1008.2 1005.1 998.3 998.7 1001.6 1006.6 1011.4 1015.0 1018.6 1009.1 MAX. QNH PRESSURE IN HPA 1021.8 1020.7 1016.0 1012.5 1008.8 1008.1 1003.2 1005.8 1011.6 1018.6 1020.2 1021.6 1021.8 DAY 25 21 3 15 4 2 31 30 17 20 29 28 MIN. QNH PRESSURE IN HPA 1012.3 1011.3 1008.2 1003.9 1001.2 992.6 992.1 995.4 1001.2 1005.1 1009.5 1013.7 992.1 DAY 20 16 12 18 27 21 19 10 5 9 7 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 1015.9 1013.3 1010.0 1006.1 1002.9 996.2 996.7 999.4 1004.3 1009.1 1013.0 1016.7 1007.0 MAX. QFE PRESSURE IN HPA 1019.6 1018.4 1013.9 1010.5 1006.3 1005.9 1001.5 1003.5 1009.0 1016.3 1018.7 1020.1 1020.1 DAY 25 21 3 14 4 2 31 29 17 20 29 28 MIN. QFE PRESSURE IN HPA 1010.8 1009.2 1006.1 1001.8 998.9 989.7 990.7 993.1 999.3 1002.9 1007.2 1012.3 989.7 DAY 20 16 11 18 27 21 18 10 5 9 7 10 MEAN QNH PRESSURE IN HPA 1016.2 1013.6 1010.3 1006.4 1003.3 996.5 997.0 999.7 1004.7 1009.5 1013.3 1017.0 1007.3 MAX. QNH PRESSURE IN HPA 1019.9 1018.7 1014.2 1010.8 1006.6 1006.2 1001.8 1003.8 1009.3 1016.6 1019.0 1020.4 1020.4 DAY 25 21 3 14 4 2 31 29 17 20 29 28 MIN. QNH PRESSURE IN HPA 1011.1 1009.5 1006.4 1002.1 999.2 990.0 991.0 993.4 999.6 1003.2 1007.5 1012.6 990.0 DAY 20 16 11 18 27 21 18 10 5 9 7 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 JASK (40893) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 25 38 N LONGITUDE 57 46 E DATA PROCESSING CENTER ELEVATION 5.2 M MEANS AND EXTREMES FOR THE YEAR 1986 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 1500 UTC. MEAN QFE PRESSURE IN HPA 1016.6 1013.8 1010.1 1006.1 1002.8 996.0 996.5 999.3 1004.4 1009.4 1013.5 1017.2 1007.1 MAX. QFE PRESSURE IN HPA 1020.3 1018.7 1014.2 1010.6 1006.7 1005.2 1001.5 1003.4 1009.2 1016.1 1019.4 1020.3 1020.3 DAY 24 21 3 15 4 2 31 16 17 20 29 18 MIN. QFE PRESSURE IN HPA 1011.1 1009.9 1006.2 1001.5 998.9 989.1 990.2 993.7 1000.0 1003.7 1007.2 1012.4 989.1 DAY 20 16 11 24 26 21 18 10 5 8 7 5 MEAN QNH PRESSURE IN HPA 1016.9 1014.2 1010.5 1006.5 1003.1 996.3 996.8 999.6 1004.7 1009.7 1013.8 1017.5 1007.5 MAX. QNH PRESSURE IN HPA 1020.6 1019.0 1014.5 1010.9 1007.0 1005.5 1001.8 1003.7 1009.5 1016.4 1019.7 1020.6 1020.6 DAY 24 21 3 15 4 2 31 16 17 20 29 18 MIN. QNH PRESSURE IN HPA 1011.4 1010.2 1006.5 1001.8 999.2 989.4 990.5 994.0 1000.3 1004.0 1007.5 1012.7 989.4 DAY 20 16 11 24 26 21 18 10 5 8 7 5 MEAN QFF PRESSURE IN HPA 1017.2 1014.4 1010.7 1006.7 1003.4 996.5 997.0 999.8 1005.0 1009.9 1014.1 1017.8 1007.7 MAX. QFF PRESSURE IN HPA 1020.9 1019.3 1014.8 1011.2 1007.3 1005.8 1002.1 1004.0 1009.8 1016.7 1020.0 1020.9 1020.9 DAY 24 21 3 15 4 2 31 16 17 20 29 18 MIN. QFF PRESSURE IN HPA 1011.7 1010.5 1006.8 1002.1 999.5 989.7 990.8 994.3 1000.6 1004.3 1007.8 1013.0 989.7 DAY 20 16 11 24 26 21 18 10 5 8 7 5 PRESSURE AT HOUR 1800 UTC. MEAN QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** PRESSURE AT HOUR 2100 UTC. MEAN QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION JASK (40893) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 25 38 N LONGITUDE 57 46 E DATA PROCESSING CENTER ELEVATION 5.2 M MEANS AND EXTREMES FOR THE YEAR 1987 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AIR TEMPERATURE (C) 21.4 21.8 23.7 26.4 30.9 32.7 33.2 32.1 30.5 29.2 26.0 22.1 27.5 MINIMUN AIR TEMPERATURE (C) 17.2 18.1 20.6 23.0 28.0 30.4 30.9 30.0 28.1 25.2 21.5 17.6 24.2 DAYS WITH MINIMUM TEMP. >=21 1 1 18 27 31 30 31 31 30 31 21 2 254 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) 15.0 15.5 14.5 18.5 26.0 29.0 28.4 27.5 26.5 21.5 18.0 13.5 13.5 DAY 17 24 25 1 4 1 15 30 14 18 30 3 MAXIMUM AIR TEMPERATURE (C) 24.3 24.4 26.1 29.3 33.2 35.1 35.1 33.5 32.2 31.7 28.6 24.7 29.9 DAYS WITH MAXIMUM TEMP. >=30 0 0 0 11 30 30 31 31 27 28 6 0 194 DAYS WITH MAXIMUM TEMP. <= 0 0 0 0 0 0 0 0 0 0 0 0 0 0 TEMPERATURE RECORDS HIGHEST(C) 26.6 27.2 29.8 34.0 37.0 39.2 40.5 37.6 40.2 35.8 31.0 26.6 40.5 DAY 28 14 21 21 6 25 10 2 5 8 8 8 DIF. BETWEEN (MAX.-MIN.) (C) 7.1 6.3 5.5 6.3 5.2 4.7 4.2 3.5 4.1 6.5 7.1 7.1 5.7 MEAN DAILY TEMP. (MDT) (C) 20.7 21.2 23.3 26.2 30.6 32.7 33.0 31.7 30.2 28.4 25.1 21.2 27.0 COOLING DEG. DAYS(BASE 21 0C) 11.2 12.4 74.3 154.6 298.1 352.0 372.4 332.6 274.8 230.8 121.6 21.3 2256.3 HEATING DEG. DAYS(BASE 18 0C) 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.6 0.6 DEWPOINT (MEAN C) 12.8 16.1 18.4 21.1 24.9 27.0 26.5 27.6 26.4 19.3 18.4 14.4 21.0 MIXING RATIO (G/KG) 9.42 11.62 13.40 16.08 20.32 23.25 22.83 23.92 22.07 15.49 13.66 10.52 16.88 VAPOUR PRESSURE (HPA) 15.18 18.63 21.32 25.41 31.78 35.98 35.29 36.99 34.43 24.48 21.77 16.91 26.51 SATURATION DEF. (HPA) 10.44 7.68 8.08 9.45 13.14 13.85 15.84 10.96 9.65 16.33 12.21 10.02 11.47 RELATIVE HUMIDITY (MEAN %) 60 71 73 74 72 73 71 78 79 60 65 63 70 RELATIVE HUMIDITY (MAX. %) 72 81 81 84 83 83 80 85 87 73 77 73 80 RELATIVE HUMIDITY (MIN. %) 50 62 66 63 61 63 60 71 72 48 52 54 60 RELATIVE HUMIDITY (MEAN% 03UTC) 66 77 76 79 78 79 71 83 84 66 69 70 75 RELATIVE HUMIDITY (MEAN% 09UTC) 52 67 72 71 70 74 71 75 78 56 58 57 67 RELATIVE HUMIDITY (MEAN% 15UTC) 64 72 73 75 74 72 72 78 80 64 69 65 72 RH=0 => RELATIVE HUMIDITY < 0.5% AMOUNT OF PRECIPITATION MM. 4.0 68.0 98.0 17.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 6.5 193.5 DAYS WITH PRECIPITATION >=10 0 2 3 1 0 0 0 0 0 0 0 0 6 DAYS WITH PRECIPITATION >= 5 0 3 5 2 0 0 0 0 0 0 0 1 11 DAYS WITH PRECIPITATION >= 1 2 3 10 2 0 0 0 0 0 0 0 1 18 DAYS WITH PRECIPITATION 2 3 10 2 0 0 0 0 0 0 0 1 18 GREATEST DAILY PRECIPITATION 3.0 34.0 35.0 10.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 6.5 35.0 DAY 11 21 24 6 ** ** ** ** ** ** ** 31 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 15 18 18 19 19 24 15 6 20 10 9 9 182 WIND DIRECTION (PREVAILING) 270 90 270 270 270 270 270 135 135 270 270 270 270 PREVAILING WIND SPEED(KNOTS) 13.6 14.0 14.0 14.5 10.6 13.2 13.5 13.9 13.2 9.6 9.2 12.1 12.6 PREVAILING WIND PERCENT 29.0 21.4 31.0 35.3 25.8 24.7 29.0 30.3 35.3 31.0 28.0 23.2 24.9 CALMS PERCENT OF WIND 5.2 5.7 4.5 5.3 3.9 0.7 5.8 4.5 1.3 14.8 8.0 16.1 6.4 NO. OF WIND OBSERVATION 155 140 155 150 155 150 155 155 150 155 150 155 1825 VECTOR WIND DIRECTION (MEAN) 292 139 271 281 194 188 161 130 139 237 265 280 214 VECTOR WIND MAGNITUDE(KNOTS) 4.7 1.4 3.1 6.5 2.8 2.9 3.2 8.1 5.2 3.0 2.0 3.6 1.7 WIND STEADINESES (MEAN %) 51.1 14.6 29.2 65.7 31.8 26.9 26.9 66.9 42.6 46.2 29.0 49.3 17.5 WIND SPEED (MEAN KNOTS) 9.2 9.6 10.6 9.9 8.8 10.8 11.9 12.1 12.2 6.5 6.9 7.3 9.7 FASTEST WIND DIRECTION 290 280 290 290 90 80 100 100 120 280 270 280 290 FASTEST WIND SPEED (KNOTS) 33 27 31 29 33 23 29 29 29 21 27 23 33 DAY 30 7 16 1 31 5 4 31 12 9 8 13 DAYS WITH SKY CLEAR (0-2)/8 29 19 12 17 19 28 31 27 28 26 25 21 282 DAYS WITH P.CLOUDY (3-6)/8 0 5 10 10 9 1 0 4 2 5 5 7 58 DAYS WITH CLOUDY (7-8)/8 2 4 9 3 3 1 0 0 0 0 0 3 25 DAYS WITH VISIBILITY =< 2 KM 2 1 0 3 2 0 6 2 0 1 1 0 18 DURATION OF SUNSHINE HOURS 270.6 245.6 188.9 286.1 279.9 244.6 227.6 225.6 271.8 305.5 274.9 207.3 3028.4 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION JASK (40893) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 25 38 N LONGITUDE 57 46 E DATA PROCESSING CENTER ELEVATION 5.2 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 1018.4 1016.2 1011.0 1009.6 1005.6 999.3 998.1 999.3 1005.1 1011.3 1014.1 1017.9 1008.8 MAX. QFE PRESSURE IN HPA 1024.3 1021.3 1018.3 1015.1 1011.6 1006.9 1005.7 1005.6 1012.7 1017.5 1020.5 1025.6 1025.6 DAY-HOUR 17- 6 24- 6 2- 6 7- 6 16- 6 1- 6 29- 6 7- 6 30- 6 24- 6 30- 6 2- 6 MIN. QFE PRESSURE IN HPA 1011.6 1011.0 1003.5 1003.0 999.7 994.0 993.6 993.1 997.8 1004.1 1008.6 1011.1 993.1 DAY-HOUR 2-12 17-12 12-12 30-15 7-12 8-15 25-15 25-12 5-12 9-15 11-12 30-12 MEAN QNH PRESSURE IN HPA 1018.8 1016.5 1011.3 1009.9 1005.9 999.6 998.4 999.7 1005.4 1011.7 1014.5 1018.3 1009.2 MAX. QNH PRESSURE IN HPA 1024.6 1021.6 1018.6 1015.4 1011.9 1007.2 1006.0 1005.9 1013.0 1017.8 1020.8 1025.9 1025.9 DAY-HOUR 17- 6 24- 6 2- 6 7- 6 16- 6 1- 6 29- 6 7- 6 30- 6 24- 6 30- 6 2- 6 MIN. QNH PRESSURE IN HPA 1011.9 1011.3 1003.8 1003.3 1000.0 994.3 993.9 993.4 998.1 1004.4 1008.9 1011.4 993.4 DAY-HOUR 2-12 17-12 12-12 30-15 7-12 8-15 25-15 25-12 5-12 9-15 11-12 30-12 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 1018.4 1016.2 1010.7 1009.6 1005.8 999.7 998.6 999.9 1005.4 1011.7 1014.3 1018.3 1009.1 MAX. QFE PRESSURE IN HPA 1022.4 1019.4 1016.7 1013.6 1010.6 1006.4 1005.2 1004.8 1010.7 1015.5 1018.7 1024.2 1024.2 DAY 17 2 2 7 16 1 29 7 30 24 30 2 MIN. QFE PRESSURE IN HPA 1013.2 1012.1 1005.3 1005.1 1001.0 996.0 995.5 995.4 1000.1 1006.4 1010.4 1014.0 995.4 DAY 3 16 13 26 7 10 26 25 5 4 11 14 MEAN QNH PRESSURE IN HPA 1018.8 1016.5 1011.0 1009.9 1006.1 1000.0 998.9 1000.3 1005.7 1012.0 1014.6 1018.7 1009.4 MAX. QNH PRESSURE IN HPA 1022.7 1019.7 1017.0 1013.9 1010.9 1006.7 1005.5 1005.1 1011.0 1015.8 1019.0 1024.5 1024.5 DAY 17 2 2 7 16 1 29 7 30 24 30 2 MIN. QNH PRESSURE IN HPA 1013.5 1012.4 1005.6 1005.4 1001.3 996.3 995.8 995.7 1000.4 1006.7 1010.7 1014.3 995.7 DAY 3 16 13 26 7 10 26 25 5 4 11 14 MEAN QFF PRESSURE IN HPA 1019.1 1016.8 1011.3 1010.2 1006.4 1000.3 999.2 1000.5 1006.0 1012.2 1014.9 1018.9 1009.6 MAX. QFF PRESSURE IN HPA 1023.0 1020.0 1017.3 1014.2 1011.2 1007.0 1005.8 1005.4 1011.3 1016.1 1019.3 1024.8 1024.8 DAY 17 2 2 7 16 1 29 7 30 24 30 2 MIN. QFF PRESSURE IN HPA 1013.8 1012.7 1005.9 1005.7 1001.6 996.6 996.1 996.0 1000.7 1007.0 1011.0 1014.6 996.0 DAY 3 16 13 30 7 10 26 25 5 4 11 14 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION JASK (40893) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 25 38 N LONGITUDE 57 46 E DATA PROCESSING CENTER ELEVATION 5.2 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 1020.3 1017.8 1012.6 1011.3 1007.1 1000.7 999.4 1000.9 1006.9 1013.2 1015.8 1019.9 1010.5 MAX. QFE PRESSURE IN HPA 1024.3 1021.3 1018.3 1015.1 1011.6 1006.9 1005.7 1005.6 1012.7 1017.5 1020.5 1025.6 1025.6 DAY 17 24 2 7 16 1 29 7 30 24 30 2 MIN. QFE PRESSURE IN HPA 1015.0 1013.2 1007.2 1005.9 1002.2 997.1 996.5 996.2 1001.2 1007.6 1012.1 1014.6 996.2 DAY 2 18 12 30 7 8 26 25 5 4 11 31 MEAN QNH PRESSURE IN HPA 1020.6 1018.2 1012.9 1011.6 1007.4 1001.0 999.7 1001.2 1007.2 1013.5 1016.2 1020.2 1010.8 MAX. QNH PRESSURE IN HPA 1024.6 1021.6 1018.6 1015.4 1011.9 1007.2 1006.0 1005.9 1013.0 1017.8 1020.8 1025.9 1025.9 DAY 17 24 2 7 16 1 29 7 30 24 30 2 MIN. QNH PRESSURE IN HPA 1015.3 1013.5 1007.5 1006.2 1002.5 997.4 996.8 996.5 1001.5 1007.9 1012.4 1014.9 996.5 DAY 2 18 12 30 7 8 26 25 5 4 11 31 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 1018.9 1016.9 1011.8 1010.5 1006.5 1000.1 998.7 1000.0 1006.0 1011.9 1014.6 1018.2 1009.5 MAX. QFE PRESSURE IN HPA 1023.2 1020.6 1017.2 1014.6 1011.2 1006.6 1004.7 1004.6 1011.9 1016.2 1019.5 1024.1 1024.1 DAY 17 24 1 7 10 1 29 7 30 24 30 2 MIN. QFE PRESSURE IN HPA 1013.3 1013.0 1006.7 1005.3 1001.4 996.5 996.0 995.5 1000.0 1006.8 1010.6 1013.3 995.5 DAY 2 18 12 30 7 8 9 25 5 4 11 14 MEAN QNH PRESSURE IN HPA 1019.3 1017.2 1012.2 1010.9 1006.8 1000.4 999.0 1000.3 1006.3 1012.2 1014.9 1018.5 1009.8 MAX. QNH PRESSURE IN HPA 1023.5 1020.9 1017.5 1014.9 1011.5 1006.9 1005.0 1004.9 1012.2 1016.5 1019.8 1024.4 1024.4 DAY 17 24 1 7 10 1 29 7 30 24 30 2 MIN. QNH PRESSURE IN HPA 1013.6 1013.3 1007.0 1005.6 1001.7 996.8 996.3 995.8 1000.3 1007.1 1010.9 1013.6 995.8 DAY 2 18 12 30 7 8 9 25 5 4 11 14 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 1017.0 1014.9 1010.1 1008.4 1004.6 998.3 997.0 998.1 1003.8 1009.9 1012.8 1016.4 1007.6 MAX. QFE PRESSURE IN HPA 1020.9 1018.0 1017.2 1012.1 1009.6 1005.5 1003.0 1002.9 1009.9 1014.1 1018.1 1021.6 1021.6 DAY 17 1 2 7 10 1 29 7 30 23 30 1 MIN. QFE PRESSURE IN HPA 1011.6 1011.0 1003.5 1003.2 999.7 994.3 994.5 993.1 997.8 1004.3 1008.6 1011.1 993.1 DAY 2 17 12 30 7 8 1 25 5 3 11 30 MEAN QNH PRESSURE IN HPA 1017.3 1015.2 1010.4 1008.7 1004.9 998.7 997.3 998.4 1004.1 1010.3 1013.1 1016.7 1007.9 MAX. QNH PRESSURE IN HPA 1021.2 1018.3 1017.5 1012.4 1009.9 1005.8 1003.3 1003.2 1010.2 1014.4 1018.4 1021.9 1021.9 DAY 17 1 2 7 10 1 29 7 30 23 30 1 MIN. QNH PRESSURE IN HPA 1011.9 1011.3 1003.8 1003.5 1000.0 994.6 994.8 993.4 998.1 1004.6 1008.9 1011.4 993.4 DAY 2 17 12 30 7 8 1 25 5 3 11 30 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION JASK (40893) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 25 38 N LONGITUDE 57 46 E DATA PROCESSING CENTER ELEVATION 5.2 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 1017.6 1015.0 1010.0 1008.4 1004.2 997.9 996.6 997.8 1003.6 1010.1 1013.3 1017.0 1007.6 MAX. QFE PRESSURE IN HPA 1021.4 1018.6 1016.9 1011.8 1008.8 1005.3 1002.0 1002.6 1009.9 1014.1 1019.6 1022.5 1022.5 DAY 17 1 2 6 10 1 28 31 30 23 30 1 MIN. QFE PRESSURE IN HPA 1012.1 1011.4 1003.9 1003.0 999.8 994.0 993.6 993.3 997.9 1004.1 1009.0 1011.7 993.3 DAY 2 16 12 30 7 8 25 25 5 9 11 30 MEAN QNH PRESSURE IN HPA 1017.9 1015.4 1010.3 1008.7 1004.5 998.2 996.9 998.1 1003.9 1010.4 1013.6 1017.3 1007.9 MAX. QNH PRESSURE IN HPA 1021.7 1018.9 1017.2 1012.1 1009.1 1005.6 1002.3 1002.9 1010.2 1014.4 1019.9 1022.8 1022.8 DAY 17 1 2 6 10 1 28 31 30 23 30 1 MIN. QNH PRESSURE IN HPA 1012.4 1011.7 1004.2 1003.3 1000.1 994.3 993.9 993.6 998.2 1004.4 1009.3 1012.0 993.6 DAY 2 16 12 30 7 8 25 25 5 9 11 30 MEAN QFF PRESSURE IN HPA 1018.2 1015.6 1010.6 1009.0 1004.7 998.4 997.2 998.4 1004.2 1010.7 1013.9 1017.6 1008.2 MAX. QFF PRESSURE IN HPA 1022.0 1019.2 1017.5 1012.4 1009.4 1005.9 1002.6 1003.2 1010.5 1014.7 1020.2 1023.1 1023.1 DAY 17 1 2 6 10 1 28 31 30 23 30 1 MIN. QFF PRESSURE IN HPA 1012.7 1012.0 1004.5 1003.6 1000.4 994.6 994.2 993.9 998.5 1004.7 1009.6 1012.3 993.9 DAY 2 16 12 30 7 8 25 25 5 9 11 30 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 JASK (40893) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 25 38 N LONGITUDE 57 46 E DATA PROCESSING CENTER ELEVATION 5.2 M MEANS AND EXTREMES FOR THE YEAR 1988 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AIR TEMPERATURE (C) 21.0 21.5 24.3 27.9 30.9 32.5 32.2 31.1 31.0 29.6 26.5 23.6 27.7 MINIMUN AIR TEMPERATURE (C) 16.6 18.3 21.0 24.7 27.3 29.3 30.8 29.4 27.9 25.7 22.0 17.4 24.2 DAYS WITH MINIMUM TEMP. >=21 2 1 17 30 30 30 31 31 30 31 20 4 257 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) 12.0 14.0 18.0 22.0 23.5 27.0 29.0 27.0 26.0 24.0 16.0 14.0 12.0 DAY 21 8 1 4 31 1 20 31 13 31 28 10 MAXIMUM AIR TEMPERATURE (C) 24.0 24.2 27.4 31.4 33.7 35.5 33.7 32.4 32.7 32.1 29.1 26.2 30.2 DAYS WITH MAXIMUM TEMP. >=30 0 0 2 22 30 30 31 30 29 25 10 0 209 DAYS WITH MAXIMUM TEMP. <= 0 0 0 0 0 0 0 0 0 0 0 0 0 0 TEMPERATURE RECORDS HIGHEST(C) 25.6 26.6 31.0 34.6 40.0 39.6 41.2 41.0 39.4 36.0 32.6 28.4 41.2 DAY 14 24 23 18 29 14 31 1 22 26 7 7 DIF. BETWEEN (MAX.-MIN.) (C) 7.4 5.9 6.4 6.7 6.4 6.2 2.9 3.0 4.8 6.4 7.1 8.8 6.0 MEAN DAILY TEMP. (MDT) (C) 20.3 21.2 24.2 28.0 30.5 32.4 32.3 30.9 30.3 28.9 25.6 21.8 27.2 COOLING DEG. DAYS(BASE 21 0C) 9.5 17.2 98.0 205.1 278.2 341.5 349.0 295.9 270.0 229.3 137.1 29.4 2260.5 HEATING DEG. DAYS(BASE 18 0C) 2.2 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 2.2 DEWPOINT (MEAN C) 11.8 14.2 17.0 19.7 24.1 25.3 27.8 26.6 25.7 22.7 19.4 15.9 20.9 MIXING RATIO (G/KG) 8.97 10.56 12.47 14.90 19.50 21.13 24.33 22.58 21.52 18.07 14.48 11.55 16.67 VAPOUR PRESSURE (HPA) 14.43 16.92 19.84 23.54 30.45 32.75 37.48 34.98 33.52 28.47 23.07 18.50 26.16 SATURATION DEF. (HPA) 10.61 8.87 10.72 14.26 14.65 16.35 10.75 10.28 11.73 13.34 11.95 10.96 12.04 RELATIVE HUMIDITY (MEAN %) 58 66 66 63 69 68 78 78 75 69 66 63 68 RELATIVE HUMIDITY (MAX. %) 67 75 77 73 81 78 83 83 85 81 76 77 78 RELATIVE HUMIDITY (MIN. %) 49 56 54 52 58 57 74 73 65 56 56 54 59 RELATIVE HUMIDITY (MEAN% 03UTC) 64 72 72 64 75 74 81 81 80 70 71 76 73 RELATIVE HUMIDITY (MEAN% 09UTC) 53 61 62 62 69 69 77 76 74 66 61 57 66 RELATIVE HUMIDITY (MEAN% 15UTC) 58 66 68 66 68 66 79 80 77 76 70 65 70 RH=0 => RELATIVE HUMIDITY < 0.5% AMOUNT OF PRECIPITATION MM. 3.0 162.0 0.6 0.0 0.0 0.0 2.0 0.0 0.0 0.0 0.0 0.0 167.6 DAYS WITH PRECIPITATION >=10 0 2 0 0 0 0 0 0 0 0 0 0 2 DAYS WITH PRECIPITATION >= 5 0 2 0 0 0 0 0 0 0 0 0 0 2 DAYS WITH PRECIPITATION >= 1 1 7 0 0 0 0 1 0 0 0 0 0 9 DAYS WITH PRECIPITATION 1 7 1 0 0 0 1 0 0 0 0 0 10 GREATEST DAILY PRECIPITATION 3.0 112.0 0.6 0.0 0.0 0.0 2.0 0.0 0.0 0.0 0.0 0.0 112.0 DAY 10 18 3 ** ** ** 20 ** ** ** ** ** 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 7 18 18 23 17 11 20 20 8 2 4 5 153 WIND DIRECTION (PREVAILING) 315 90 270 270 180 270 180 135 135 270 270 270 270 PREVAILING WIND SPEED(KNOTS) 16.3 19.7 16.9 15.9 11.3 9.9 10.1 13.3 13.3 8.4 7.3 8.1 12.3 PREVAILING WIND PERCENT 17.4 20.7 34.2 44.7 37.4 26.0 38.7 42.6 18.7 19.4 22.0 19.5 19.6 CALMS PERCENT OF WIND 5.8 2.8 1.9 1.3 5.2 6.7 1.3 0.6 18.7 16.1 10.7 21.4 7.7 NO. OF WIND OBSERVATION 155 145 155 150 155 150 155 155 150 155 150 154 1829 VECTOR WIND DIRECTION (MEAN) 307 2 279 269 180 247 151 142 178 228 263 294 212 VECTOR WIND MAGNITUDE(KNOTS) 3.5 1.7 6.2 7.9 4.5 2.8 9.1 10.2 3.1 1.7 2.3 1.2 2.1 WIND STEADINESES (MEAN %) 35.4 12.2 51.7 62.7 45.9 31.8 79.8 82.9 34.8 26.6 37.7 16.4 21.2 WIND SPEED (MEAN KNOTS) 9.9 13.9 12.0 12.6 9.8 8.8 11.4 12.3 8.9 6.4 6.1 7.3 9.9 FASTEST WIND DIRECTION 290 120 280 280 170 110 120 100 140 280 300 150 280 FASTEST WIND SPEED (KNOTS) 35 33 45 51 25 23 27 23 27 17 23 29 51 DAY 19 17 24 27 11 16 8 3 10 18 15 9 DAYS WITH SKY CLEAR (0-2)/8 10 9 24 16 30 30 12 23 28 30 23 19 254 DAYS WITH P.CLOUDY (3-6)/8 19 11 4 13 1 0 15 8 2 1 7 12 93 DAYS WITH CLOUDY (7-8)/8 2 9 3 1 0 0 4 0 0 0 0 0 19 DAYS WITH VISIBILITY =< 2 KM 0 0 2 1 0 3 0 0 2 1 0 0 9 DURATION OF SUNSHINE HOURS 265.9 190.6 265.2 263.5 331.2 285.9 161.2 214.3 284.6 293.9 280.0 217.4 3053.7 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION JASK (40893) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 25 38 N LONGITUDE 57 46 E DATA PROCESSING CENTER ELEVATION 5.2 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 1016.7 1014.5 1010.4 1008.1 1002.9 997.9 996.0 999.0 1003.0 1009.8 1015.2 1016.2 1007.5 MAX. QFE PRESSURE IN HPA 1022.6 1019.7 1015.9 1014.7 1009.7 1003.5 1001.9 1006.3 1009.6 1014.7 1019.8 1023.2 1023.2 DAY-HOUR 3- 6 20- 6 17- 6 4- 6 3- 6 1- 6 11- 6 31- 6 14- 6 22- 6 27- 6 3- 6 MIN. QFE PRESSURE IN HPA 1011.1 1009.9 1002.1 1001.6 998.5 992.6 991.1 990.8 995.5 1003.2 1010.0 1009.4 990.8 DAY-HOUR 27-12 12-12 23-15 22-12 11-12 26-15 18-15 2-15 8-12 7-15 22-12 7-12 MEAN QNH PRESSURE IN HPA 1017.0 1014.8 1010.7 1008.4 1003.2 998.2 996.3 999.3 1003.3 1010.1 1015.5 1016.5 1007.8 MAX. QNH PRESSURE IN HPA 1022.9 1020.0 1016.2 1015.0 1010.0 1003.8 1002.2 1006.6 1009.9 1015.0 1020.1 1023.5 1023.5 DAY-HOUR 3- 6 20- 6 17- 6 4- 6 3- 6 1- 6 11- 6 31- 6 14- 6 22- 6 27- 6 3- 6 MIN. QNH PRESSURE IN HPA 1011.4 1010.2 1002.4 1001.9 998.8 992.9 991.4 991.1 995.8 1003.5 1010.3 1009.7 991.1 DAY-HOUR 27-12 12-12 23-15 22-12 11-12 26-15 18-15 2-15 8-12 7-15 22-12 7-12 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY-HOUR **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY-HOUR **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** PRESSURE AT HOUR 0000 UTC. MEAN QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** PRESSURE AT HOUR 0300 UTC. MEAN QFE PRESSURE IN HPA 1016.6 1014.3 1010.5 1008.0 1003.1 998.2 996.9 999.6 1003.6 1010.0 1015.4 1016.3 1007.7 MAX. QFE PRESSURE IN HPA 1021.1 1017.7 1013.6 1012.9 1007.4 1002.8 1001.0 1005.3 1008.8 1012.7 1017.9 1021.5 1021.5 DAY 3 20 1 4 3 1 11 31 14 22 27 3 MIN. QFE PRESSURE IN HPA 1012.5 1011.4 1004.5 1003.5 999.6 992.7 993.6 993.3 999.0 1004.9 1012.0 1010.4 992.7 DAY 27 12 24 19 30 24 18 2 8 7 18 8 MEAN QNH PRESSURE IN HPA 1016.9 1014.6 1010.9 1008.3 1003.4 998.6 997.2 999.9 1003.9 1010.3 1015.7 1016.6 1008.0 MAX. QNH PRESSURE IN HPA 1021.4 1018.0 1013.9 1013.2 1007.7 1003.1 1001.3 1005.6 1009.1 1013.0 1018.2 1021.8 1021.8 DAY 3 20 1 4 3 1 11 31 14 22 27 3 MIN. QNH PRESSURE IN HPA 1012.8 1011.7 1004.8 1003.8 999.9 993.0 993.9 993.6 999.3 1005.2 1012.3 1010.7 993.0 DAY 27 12 24 19 30 24 18 2 8 7 18 8 MEAN QFF PRESSURE IN HPA 1017.2 1014.9 1011.1 1008.6 1003.7 998.8 997.5 1000.2 1004.2 1010.6 1016.0 1016.9 1008.3 MAX. QFF PRESSURE IN HPA 1021.7 1018.3 1014.2 1013.5 1008.0 1003.4 1001.6 1005.9 1009.4 1013.3 1018.5 1022.1 1022.1 DAY 3 20 1 4 3 1 11 31 14 22 27 3 MIN. QFF PRESSURE IN HPA 1013.1 1012.0 1005.1 1004.1 1000.2 993.3 994.2 993.9 999.6 1005.5 1012.6 1011.0 993.3 DAY 27 25 24 19 30 24 18 2 8 7 18 8 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION JASK (40893) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 25 38 N LONGITUDE 57 46 E DATA PROCESSING CENTER ELEVATION 5.2 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 1018.4 1016.2 1012.2 1009.7 1004.4 999.3 997.5 1000.5 1004.7 1011.5 1017.0 1018.0 1009.1 MAX. QFE PRESSURE IN HPA 1022.6 1019.7 1015.9 1014.7 1009.7 1003.5 1001.9 1006.3 1009.6 1014.7 1019.8 1023.2 1023.2 DAY 3 20 17 4 3 1 11 31 14 22 27 3 MIN. QFE PRESSURE IN HPA 1014.4 1013.0 1006.7 1005.2 1000.6 994.7 993.9 993.7 999.7 1006.7 1013.7 1012.0 993.7 DAY 27 12 24 19 30 24 18 2 8 7 18 8 MEAN QNH PRESSURE IN HPA 1018.8 1016.5 1012.5 1010.0 1004.7 999.6 997.8 1000.8 1005.1 1011.8 1017.4 1018.3 1009.4 MAX. QNH PRESSURE IN HPA 1022.9 1020.0 1016.2 1015.0 1010.0 1003.8 1002.2 1006.6 1009.9 1015.0 1020.1 1023.5 1023.5 DAY 3 20 17 4 3 1 11 31 14 22 27 3 MIN. QNH PRESSURE IN HPA 1014.7 1013.3 1007.0 1005.5 1000.9 995.0 994.2 994.0 1000.0 1007.0 1014.0 1012.3 994.0 DAY 27 12 24 19 30 24 18 2 8 7 18 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 1017.3 1015.4 1011.0 1008.9 1003.6 998.6 996.5 999.5 1003.4 1010.1 1015.4 1016.2 1008.0 MAX. QFE PRESSURE IN HPA 1021.4 1018.3 1014.3 1014.6 1008.7 1003.0 1000.8 1005.9 1009.0 1013.1 1018.1 1021.7 1021.7 DAY 3 2 1 4 3 1 11 31 14 27 27 3 MIN. QFE PRESSURE IN HPA 1013.3 1012.5 1005.9 1003.7 999.9 993.9 992.8 992.6 997.6 1005.0 1012.0 1010.4 992.6 DAY 19 12 23 22 30 24 18 2 8 7 22 8 MEAN QNH PRESSURE IN HPA 1017.6 1015.8 1011.3 1009.2 1003.9 998.9 996.8 999.8 1003.7 1010.4 1015.7 1016.5 1008.3 MAX. QNH PRESSURE IN HPA 1021.7 1018.6 1014.6 1014.9 1009.0 1003.3 1001.1 1006.2 1009.3 1013.4 1018.4 1022.0 1022.0 DAY 3 2 1 4 3 1 11 31 14 27 27 3 MIN. QNH PRESSURE IN HPA 1013.6 1012.8 1006.2 1004.0 1000.2 994.2 993.1 992.9 997.9 1005.3 1012.3 1010.7 992.9 DAY 19 12 23 22 30 24 18 2 8 7 22 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 1015.3 1013.1 1009.1 1006.9 1001.9 997.0 994.8 997.7 1001.8 1008.7 1013.7 1014.8 1006.2 MAX. QFE PRESSURE IN HPA 1019.5 1016.2 1012.7 1011.8 1006.0 1001.4 998.6 1003.4 1007.2 1011.8 1016.1 1019.5 1019.5 DAY 3 2 1 4 3 1 11 31 14 27 27 3 MIN. QFE PRESSURE IN HPA 1011.1 1009.9 1003.0 1001.6 998.5 992.8 991.3 991.4 995.5 1003.3 1010.0 1009.4 991.3 DAY 27 12 23 22 11 24 18 1 8 7 22 7 MEAN QNH PRESSURE IN HPA 1015.6 1013.4 1009.4 1007.2 1002.2 997.3 995.1 998.0 1002.1 1009.0 1014.0 1015.2 1006.5 MAX. QNH PRESSURE IN HPA 1019.8 1016.5 1013.0 1012.1 1006.3 1001.7 998.9 1003.7 1007.5 1012.1 1016.4 1019.8 1019.8 DAY 3 2 1 4 3 1 11 31 14 27 27 3 MIN. QNH PRESSURE IN HPA 1011.4 1010.2 1003.3 1001.9 998.8 993.1 991.6 991.7 995.8 1003.6 1010.3 1009.7 991.6 DAY 27 12 23 22 11 24 18 1 8 7 22 7 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** *****