STATION ZARGHAN (40847) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 29 47 N LONGITUDE 52 43 E DATA PROCESSING CENTER ELEVATION 1596.0 M MEANS AND EXTREMES FOR THE YEAR 1989 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AIR TEMPERATURE (C) ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** 12.7 7.1 ***** MINIMUN AIR TEMPERATURE (C) ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** 3.7 -0.2 ***** DAYS WITH MINIMUM TEMP. >=21 **** **** **** **** **** **** **** **** **** **** 0 0 **** DAYS WITH MINIMUM TEMP. <=-4 **** **** **** **** **** **** **** **** **** **** 0 2 **** DAYS WITH FREEZING MIN.<= 0 **** **** **** **** **** **** **** **** **** **** 8 21 **** TEMPERATURE RECORDS LOWEST(C) ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** -1.5 -4.5 ***** DAY ** ** ** ** ** ** ** ** ** ** 24 26 MAXIMUM AIR TEMPERATURE (C) ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** 17.8 11.9 ***** DAYS WITH MAXIMUM TEMP. >=30 **** **** **** **** **** **** **** **** **** **** 0 0 **** DAYS WITH MAXIMUM TEMP. <= 0 **** **** **** **** **** **** **** **** **** **** 0 0 **** TEMPERATURE RECORDS HIGHEST(C)***** ***** ***** ***** ***** ***** ***** ***** ***** ***** 24.4 18.2 ***** DAY ** ** ** ** ** ** ** ** ** ** 1 1 DIF. BETWEEN (MAX.-MIN.) (C) ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** 14.1 12.1 ***** MEAN DAILY TEMP. (MDT) (C) ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** 10.7 5.8 ***** COOLING DEG. DAYS(BASE 21 0C)****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 0.0 0.0 ****** HEATING DEG. DAYS(BASE 18 0C)****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 217.5 377.2 ****** DEWPOINT (MEAN C) ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** 1.2 -0.3 ***** MIXING RATIO (G/KG) ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 5.35 4.63 ****** VAPOUR PRESSURE (HPA) ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 7.19 6.23 ****** SATURATION DEF. (HPA) ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 8.28 4.28 ****** RELATIVE HUMIDITY (MEAN %) *** *** *** *** *** *** *** *** *** *** 53 64 *** RELATIVE HUMIDITY (MAX. %) *** *** *** *** *** *** *** *** *** *** 77 87 *** RELATIVE HUMIDITY (MIN. %) *** *** *** *** *** *** *** *** *** *** 37 45 *** RELATIVE HUMIDITY (MEAN% 03UTC) *** *** *** *** *** *** *** *** *** *** 76 86 *** RELATIVE HUMIDITY (MEAN% 09UTC) *** *** *** *** *** *** *** *** *** *** 43 53 *** RELATIVE HUMIDITY (MEAN% 15UTC) *** *** *** *** *** *** *** *** *** *** 48 60 *** RH=0 => RELATIVE HUMIDITY < 0.5% AMOUNT OF PRECIPITATION MM. ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 37.0 73.2 ****** DAYS WITH PRECIPITATION >=10 **** **** **** **** **** **** **** **** **** **** 2 3 **** DAYS WITH PRECIPITATION >= 5 **** **** **** **** **** **** **** **** **** **** 3 6 **** DAYS WITH PRECIPITATION >= 1 **** **** **** **** **** **** **** **** **** **** 4 7 **** DAYS WITH PRECIPITATION **** **** **** **** **** **** **** **** **** **** 9 7 **** GREATEST DAILY PRECIPITATION ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 11.6 24.0 ****** DAY ** ** ** ** ** ** ** ** ** ** 15 5 DAY WITH THUNDER STORM **** **** **** **** **** **** **** **** **** **** 2 1 **** DAYS WITH SNOW OR SLEET **** **** **** **** **** **** **** **** **** **** 0 0 **** DAYS WITH DUST **** **** **** **** **** **** **** **** **** **** 2 0 **** WIND DIRECTION (PREVAILING) *** *** *** *** *** *** *** *** *** *** 315 225 *** PREVAILING WIND SPEED(KNOTS) **** **** **** **** **** **** **** **** **** **** 18.3 23.3 **** PREVAILING WIND PERCENT ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** 9.4 3.9 ***** CALMS PERCENT OF WIND ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** 75.2 83.1 ***** NO. OF WIND OBSERVATION **** **** **** **** **** **** **** **** **** **** 149 154 303 VECTOR WIND DIRECTION (MEAN) *** *** *** *** *** *** *** *** *** *** 275 206 *** VECTOR WIND MAGNITUDE(KNOTS) **** **** **** **** **** **** **** **** **** **** 2.7 1.2 **** WIND STEADINESES (MEAN %) ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** 67.5 44.4 ***** WIND SPEED (MEAN KNOTS) **** **** **** **** **** **** **** **** **** **** 4.0 2.7 **** FASTEST WIND DIRECTION *** *** *** *** *** *** *** *** *** *** 220 210 *** FASTEST WIND SPEED (KNOTS) *** *** *** *** *** *** *** *** *** *** 39 49 *** DAY ** ** ** ** ** ** ** ** ** ** 16 6 DAYS WITH SKY CLEAR (0-2)/8 **** **** **** **** **** **** **** **** **** **** 10 20 **** DAYS WITH P.CLOUDY (3-6)/8 **** **** **** **** **** **** **** **** **** **** 10 5 **** DAYS WITH CLOUDY (7-8)/8 **** **** **** **** **** **** **** **** **** **** 10 6 **** DAYS WITH VISIBILITY =< 2 KM **** **** **** **** **** **** **** **** **** **** 3 0 **** DURATION OF SUNSHINE HOURS ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 187.6 79.1 ****** ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ZARGHAN (40847) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 29 47 N LONGITUDE 52 43 E DATA PROCESSING CENTER ELEVATION 1596.0 M MEANS AND EXTREMES FOR THE YEAR 1989 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL MEAN QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 844.9 842.7 ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 849.4 848.4 ****** DAY-HOUR **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** 28- 6 2- 6 MIN. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 840.8 838.3 ****** DAY-HOUR **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** 6-12 23-12 MEAN QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1023.8 1021.2 ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1029.0 1027.9 ****** DAY-HOUR **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** 28- 6 2- 6 MIN. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1019.0 1016.1 ****** DAY-HOUR **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** 6-12 23-12 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 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 845.4 843.0 ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 848.8 847.2 ****** DAY ** ** ** ** ** ** ** ** ** ** 29 1 MIN. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 842.6 839.7 ****** DAY ** ** ** ** ** ** ** ** ** ** 6 5 MEAN QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1024.3 1021.6 ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1028.3 1026.5 ****** DAY ** ** ** ** ** ** ** ** ** ** 29 1 MIN. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1021.1 1017.7 ****** DAY ** ** ** ** ** ** ** ** ** ** 6 5 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1021.1 1021.6 ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1027.4 1027.3 ****** DAY ** ** ** ** ** ** ** ** ** ** 26 19 MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1015.5 1012.5 ****** DAY ** ** ** ** ** ** ** ** ** ** 6 5 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ZARGHAN (40847) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 29 47 N LONGITUDE 52 43 E DATA PROCESSING CENTER ELEVATION 1596.0 M MEANS AND EXTREMES FOR THE YEAR 1989 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 0600 UTC. MEAN QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 846.6 844.2 ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 849.4 848.4 ****** DAY ** ** ** ** ** ** ** ** ** ** 28 2 MIN. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 844.2 841.2 ****** DAY ** ** ** ** ** ** ** ** ** ** 6 15 MEAN QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1025.7 1023.0 ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1029.0 1027.9 ****** DAY ** ** ** ** ** ** ** ** ** ** 28 2 MIN. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1023.0 1019.5 ****** DAY ** ** ** ** ** ** ** ** ** ** 6 15 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** PRESSURE AT HOUR 0900 UTC. MEAN QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 844.7 842.6 ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 847.4 847.6 ****** DAY ** ** ** ** ** ** ** ** ** ** 28 2 MIN. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 841.6 839.3 ****** DAY ** ** ** ** ** ** ** ** ** ** 6 23 MEAN QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1023.5 1021.1 ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1026.7 1026.9 ****** DAY ** ** ** ** ** ** ** ** ** ** 28 2 MIN. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1019.9 1017.2 ****** DAY ** ** ** ** ** ** ** ** ** ** 6 23 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** PRESSURE AT HOUR 1200 UTC. MEAN QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 843.8 841.6 ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 847.8 846.4 ****** DAY ** ** ** ** ** ** ** ** ** ** 8 2 MIN. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 840.8 838.3 ****** DAY ** ** ** ** ** ** ** ** ** ** 6 23 MEAN QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1022.4 1019.9 ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1027.2 1025.5 ****** DAY ** ** ** ** ** ** ** ** ** ** 8 2 MIN. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1019.0 1016.1 ****** DAY ** ** ** ** ** ** ** ** ** ** 6 23 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ZARGHAN (40847) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 29 47 N LONGITUDE 52 43 E DATA PROCESSING CENTER ELEVATION 1596.0 M MEANS AND EXTREMES FOR THE YEAR 1989 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 1500 UTC. MEAN QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 844.2 842.1 ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 847.0 846.3 ****** DAY ** ** ** ** ** ** ** ** ** ** 28 3 MIN. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 841.2 838.6 ****** DAY ** ** ** ** ** ** ** ** ** ** 6 31 MEAN QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1023.0 1020.5 ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1026.2 1025.4 ****** DAY ** ** ** ** ** ** ** ** ** ** 28 3 MIN. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1019.5 1016.4 ****** DAY ** ** ** ** ** ** ** ** ** ** 6 31 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1019.6 1020.5 ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1024.9 1024.8 ****** DAY ** ** ** ** ** ** ** ** ** ** 26 18 MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1012.9 1015.0 ****** DAY ** ** ** ** ** ** ** ** ** ** 6 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 ZARGHAN (40847) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 29 47 N LONGITUDE 52 43 E DATA PROCESSING CENTER ELEVATION 1596.0 M MEANS AND EXTREMES FOR THE YEAR 1990 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AIR TEMPERATURE (C) 3.9 7.3 12.5 17.6 ***** ***** ***** 30.1 26.8 19.9 13.6 9.0 ***** MINIMUN AIR TEMPERATURE (C) -2.3 0.4 1.4 6.4 ***** ***** ***** 17.2 12.6 7.1 1.5 -0.1 ***** DAYS WITH MINIMUM TEMP. >=21 0 0 0 0 **** **** **** 1 0 0 0 0 **** DAYS WITH MINIMUM TEMP. <=-4 13 4 1 0 **** **** **** 0 0 0 0 3 **** DAYS WITH FREEZING MIN.<= 0 23 14 13 2 **** **** **** 0 0 0 10 15 **** TEMPERATURE RECORDS LOWEST(C) -7.0 -5.2 -4.0 -0.8 ***** ***** ***** 12.0 9.8 2.5 -1.4 -5.4 ***** DAY 26 27 1 6 ** ** ** 16 29 31 21 29 MAXIMUM AIR TEMPERATURE (C) 8.3 12.0 18.5 23.1 ***** ***** ***** 37.2 34.2 27.4 20.9 15.1 ***** DAYS WITH MAXIMUM TEMP. >=30 0 0 0 0 **** **** **** 31 30 8 0 0 **** DAYS WITH MAXIMUM TEMP. <= 0 0 0 0 0 **** **** **** 0 0 0 0 0 **** TEMPERATURE RECORDS HIGHEST(C) 14.0 16.8 25.5 28.8 ***** ***** ***** 39.6 36.6 31.2 24.8 19.8 ***** DAY 23 18 13 14 ** ** ** 13 2 5 4 8 DIF. BETWEEN (MAX.-MIN.) (C) 10.6 11.6 17.1 16.7 ***** ***** ***** 20.0 21.6 20.3 19.4 15.2 ***** MEAN DAILY TEMP. (MDT) (C) 3.0 6.2 10.0 14.8 ***** ***** ***** 27.2 23.4 17.3 11.2 7.5 ***** COOLING DEG. DAYS(BASE 21 0C) 0.0 0.0 0.0 0.0 ****** ****** ****** 192.9 73.3 0.2 0.0 0.0 ****** HEATING DEG. DAYS(BASE 18 0C) 463.8 331.5 249.1 104.0 ****** ****** ****** 0.0 0.0 37.6 204.5 324.6 ****** DEWPOINT (MEAN C) -2.4 -1.8 -3.0 -0.7 ***** ***** ***** 1.9 -1.8 -2.8 -5.0 -2.8 ***** MIXING RATIO (G/KG) 3.95 4.26 3.88 4.62 ****** ****** ****** 5.41 4.17 3.77 3.31 3.80 ****** VAPOUR PRESSURE (HPA) 5.31 5.70 5.21 6.18 ****** ****** ****** 7.20 5.58 5.08 4.47 5.11 ****** SATURATION DEF. (HPA) 3.12 4.94 10.29 15.39 ****** ****** ****** 38.02 32.32 19.85 12.49 7.17 ****** RELATIVE HUMIDITY (MEAN %) 67 58 40 34 *** *** *** 19 18 25 33 49 *** RELATIVE HUMIDITY (MAX. %) 88 82 72 61 *** *** *** 37 42 51 58 77 *** RELATIVE HUMIDITY (MIN. %) 50 42 22 21 *** *** *** 10 9 12 20 29 *** RELATIVE HUMIDITY (MEAN% 03UTC) 87 82 72 60 *** *** *** 37 42 51 58 76 *** RELATIVE HUMIDITY (MEAN% 09UTC) 58 50 28 25 *** *** *** 11 10 15 23 37 *** RELATIVE HUMIDITY (MEAN% 15UTC) 66 54 32 27 *** *** *** 14 15 20 29 44 *** RH=0 => RELATIVE HUMIDITY < 0.5% AMOUNT OF PRECIPITATION MM. 95.0 117.7 13.2 15.0 ****** ****** ****** 0.0 0.0 0.0 12.0 22.7 ****** DAYS WITH PRECIPITATION >=10 3 4 0 0 **** **** **** 0 0 0 0 1 **** DAYS WITH PRECIPITATION >= 5 7 6 1 2 **** **** **** 0 0 0 1 2 **** DAYS WITH PRECIPITATION >= 1 9 7 2 2 **** **** **** 0 0 0 2 2 **** DAYS WITH PRECIPITATION 10 11 4 2 **** **** **** 0 0 0 2 4 **** GREATEST DAILY PRECIPITATION 35.0 49.0 8.4 9.0 ****** ****** ****** 0.0 0.0 0.0 9.0 13.0 ****** DAY 10 4 18 3 ** ** ** ** ** ** 28 22 DAY WITH THUNDER STORM 0 3 0 1 **** **** **** 0 0 0 0 0 **** DAYS WITH SNOW OR SLEET 4 0 0 0 **** **** **** 0 0 0 0 0 **** DAYS WITH DUST 0 0 2 5 **** **** **** 2 0 1 0 0 **** WIND DIRECTION (PREVAILING) 225 225 225 270 *** *** *** 180 315 270 45 225 *** PREVAILING WIND SPEED(KNOTS) 21.1 25.7 25.0 23.5 **** **** **** 10.6 8.2 13.6 5.4 11.0 **** PREVAILING WIND PERCENT 9.0 15.0 13.5 14.7 ***** ***** ***** 9.0 5.6 7.6 4.7 12.9 ***** CALMS PERCENT OF WIND 72.9 54.3 54.2 48.0 ***** ***** ***** 62.9 72.5 78.8 86.0 74.2 ***** NO. OF WIND OBSERVATION 155 140 155 150 **** **** **** 178 160 170 150 155 1413 VECTOR WIND DIRECTION (MEAN) 255 246 260 266 *** *** *** 191 240 262 203 232 *** VECTOR WIND MAGNITUDE(KNOTS) 2.5 5.2 4.4 5.5 **** **** **** 0.9 0.7 1.4 R< 0.1 1.9 **** WIND STEADINESES (MEAN %) 62.5 64.2 54.3 56.7 ***** ***** ***** 26.5 30.4 70.0 4.0 79.2 ***** WIND SPEED (MEAN KNOTS) 4.0 8.1 8.1 9.7 **** **** **** 3.4 2.3 2.0 0.7 2.4 **** FASTEST WIND DIRECTION 180 220 220 240 *** *** *** 180 290 280 300 220 *** FASTEST WIND SPEED (KNOTS) 39 49 49 49 *** *** *** 29 19 39 23 27 *** DAY 24 10 19 15 ** ** ** 29 8 17 28 25 DAYS WITH SKY CLEAR (0-2)/8 14 16 19 11 **** **** **** 27 29 30 25 25 **** DAYS WITH P.CLOUDY (3-6)/8 10 6 8 14 **** **** **** 3 1 1 4 4 **** DAYS WITH CLOUDY (7-8)/8 7 6 4 5 **** **** **** 1 0 0 1 2 **** DAYS WITH VISIBILITY =< 2 KM 3 0 0 0 **** **** **** 0 0 0 2 1 **** DURATION OF SUNSHINE HOURS ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ZARGHAN (40847) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 29 47 N LONGITUDE 52 43 E DATA PROCESSING CENTER ELEVATION 1596.0 M MEANS AND EXTREMES FOR THE YEAR 1990 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL MEAN QFE PRESSURE IN HPA 842.0 839.2 841.7 839.7 ****** ****** ****** 835.7 838.7 843.3 844.6 843.2 ****** MAX. QFE PRESSURE IN HPA 848.9 846.5 848.8 844.4 ****** ****** ****** 840.3 844.1 849.1 850.8 850.8 ****** DAY-HOUR 26- 6 1- 6 10- 6 3- 6 **-** **-** **-** 4- 6 26- 6 19- 6 23- 6 5- 6 MIN. QFE PRESSURE IN HPA 836.1 832.5 835.0 834.8 ****** ****** ****** 832.3 833.5 837.1 837.0 837.7 ****** DAY-HOUR 17-12 10-12 20-12 9-15 **-** **-** **-** 1-12 4-12 1-12 1-12 25-15 MEAN QNH PRESSURE IN HPA 1020.4 1017.1 1020.0 1017.7 ****** ****** ****** 1013.0 1016.6 1022.0 1023.4 1021.8 ****** MAX. QNH PRESSURE IN HPA 1028.5 1025.7 1028.3 1023.2 ****** ****** ****** 1018.4 1022.9 1028.7 1030.7 1030.7 ****** DAY-HOUR 26- 6 1- 6 10- 6 3- 6 **-** **-** **-** 4- 6 26- 6 19- 6 23- 6 5- 6 MIN. QNH PRESSURE IN HPA 1013.5 1009.3 1012.2 1012.0 ****** ****** ****** 1009.1 1010.5 1014.7 1014.6 1015.4 ****** DAY-HOUR 17-12 10-12 20-12 9-15 **-** **-** **-** 1-12 4-12 1-12 1-12 25-15 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 842.0 839.5 842.0 840.0 ****** ****** ****** 836.6 839.6 844.3 845.3 843.8 ****** MAX. QFE PRESSURE IN HPA 847.5 844.7 847.2 843.0 ****** ****** ****** 839.6 843.2 848.0 849.7 849.1 ****** DAY 20 1 10 13 ** ** ** 4 26 19 24 5 MIN. QFE PRESSURE IN HPA 837.4 835.1 837.0 835.6 ****** ****** ****** 833.9 835.7 839.5 840.0 838.5 ****** DAY 17 16 20 10 ** ** ** 1 4 1 1 26 MEAN QNH PRESSURE IN HPA 1020.5 1017.4 1020.4 1018.1 ****** ****** ****** 1014.1 1017.5 1023.0 1024.3 1022.5 ****** MAX. QNH PRESSURE IN HPA 1026.8 1023.6 1026.5 1021.6 ****** ****** ****** 1017.6 1021.8 1027.4 1029.4 1028.7 ****** DAY 20 1 10 13 ** ** ** 4 26 19 24 5 MIN. QNH PRESSURE IN HPA 1015.0 1012.3 1014.6 1012.9 ****** ****** ****** 1010.9 1013.0 1017.5 1018.1 1016.3 ****** DAY 17 16 20 10 ** ** ** 1 4 1 1 26 MEAN QFF PRESSURE IN HPA 1022.4 1017.2 1017.6 1011.7 ****** ****** ****** 999.9 1006.1 1016.2 1021.7 1022.0 ****** MAX. QFF PRESSURE IN HPA 1031.3 1027.0 1024.3 1016.7 ****** ****** ****** 1003.9 1012.9 1023.1 1029.1 1031.5 ****** DAY 20 1 10 8 ** ** ** 16 27 19 24 29 MIN. QFF PRESSURE IN HPA 1015.1 1009.7 1012.0 1004.9 ****** ****** ****** 996.1 1000.9 1008.0 1013.2 1014.6 ****** DAY 2 6 19 16 ** ** ** 2 4 1 1 26 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ZARGHAN (40847) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 29 47 N LONGITUDE 52 43 E DATA PROCESSING CENTER ELEVATION 1596.0 M MEANS AND EXTREMES FOR THE YEAR 1990 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 0600 UTC. MEAN QFE PRESSURE IN HPA 843.5 840.8 843.3 840.9 ****** ****** ****** 837.2 840.4 845.2 846.4 844.9 ****** MAX. QFE PRESSURE IN HPA 848.9 846.5 848.8 844.4 ****** ****** ****** 840.3 844.1 849.1 850.8 850.8 ****** DAY 26 1 10 3 ** ** ** 4 26 19 23 5 MIN. QFE PRESSURE IN HPA 838.7 836.4 838.0 836.1 ****** ****** ****** 834.3 836.0 840.4 840.4 840.3 ****** DAY 17 16 27 10 ** ** ** 1 4 1 1 25 MEAN QNH PRESSURE IN HPA 1022.1 1018.9 1021.9 1019.1 ****** ****** ****** 1014.8 1018.5 1024.1 1025.6 1023.8 ****** MAX. QNH PRESSURE IN HPA 1028.5 1025.7 1028.3 1023.2 ****** ****** ****** 1018.4 1022.9 1028.7 1030.7 1030.7 ****** DAY 26 1 10 3 ** ** ** 4 26 19 23 5 MIN. QNH PRESSURE IN HPA 1016.5 1013.9 1015.7 1013.5 ****** ****** ****** 1011.4 1013.4 1018.5 1018.5 1018.4 ****** DAY 17 16 27 10 ** ** ** 1 4 1 1 25 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** 1014.1 ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** 1020.0 ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** 19 ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** 1007.0 ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** 1 ** ** PRESSURE AT HOUR 0900 UTC. MEAN QFE PRESSURE IN HPA 842.1 839.4 842.0 839.9 ****** ****** ****** 836.0 838.7 843.3 844.4 843.2 ****** MAX. QFE PRESSURE IN HPA 847.7 844.7 847.5 844.0 ****** ****** ****** 839.0 842.6 847.6 848.9 848.6 ****** DAY 26 1 10 3 ** ** ** 4 26 19 23 5 MIN. QFE PRESSURE IN HPA 837.5 835.0 836.8 835.1 ****** ****** ****** 833.5 834.6 839.5 838.6 838.7 ****** DAY 17 10 20 16 ** ** ** 1 4 1 1 27 MEAN QNH PRESSURE IN HPA 1020.5 1017.3 1020.4 1017.9 ****** ****** ****** 1013.4 1016.6 1021.9 1023.2 1021.8 ****** MAX. QNH PRESSURE IN HPA 1027.1 1023.6 1026.8 1022.7 ****** ****** ****** 1016.9 1021.1 1026.9 1028.5 1028.1 ****** DAY 26 1 10 3 ** ** ** 4 26 19 23 5 MIN. QNH PRESSURE IN HPA 1015.1 1012.2 1014.3 1012.3 ****** ****** ****** 1010.5 1011.8 1017.5 1016.4 1016.5 ****** DAY 17 10 20 16 ** ** ** 1 4 1 1 27 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 841.0 837.8 840.3 838.6 ****** ****** ****** 834.4 837.1 841.8 843.2 841.8 ****** MAX. QFE PRESSURE IN HPA 846.2 842.7 845.6 841.6 ****** ****** ****** 836.7 841.1 845.5 847.6 847.1 ****** DAY 26 3 9 3 ** ** ** 3 26 19 23 5 MIN. QFE PRESSURE IN HPA 836.1 832.5 835.0 834.8 ****** ****** ****** 832.3 833.5 837.1 837.0 837.7 ****** DAY 17 10 20 16 ** ** ** 1 4 1 1 27 MEAN QNH PRESSURE IN HPA 1019.2 1015.4 1018.4 1016.4 ****** ****** ****** 1011.5 1014.7 1020.2 1021.8 1020.2 ****** MAX. QNH PRESSURE IN HPA 1025.3 1021.2 1024.6 1019.9 ****** ****** ****** 1014.2 1019.3 1024.5 1026.9 1026.4 ****** DAY 26 3 9 3 ** ** ** 3 26 19 23 5 MIN. QNH PRESSURE IN HPA 1013.5 1009.3 1012.2 1012.0 ****** ****** ****** 1009.1 1010.5 1014.7 1014.6 1015.4 ****** DAY 17 10 20 16 ** ** ** 1 4 1 1 27 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ZARGHAN (40847) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 29 47 N LONGITUDE 52 43 E DATA PROCESSING CENTER ELEVATION 1596.0 M MEANS AND EXTREMES FOR THE YEAR 1990 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 1500 UTC. MEAN QFE PRESSURE IN HPA 841.6 838.5 840.8 839.0 ****** ****** ****** 834.3 837.1 842.2 843.7 842.5 ****** MAX. QFE PRESSURE IN HPA 846.7 843.4 846.3 842.0 ****** ****** ****** 836.7 840.8 846.0 847.9 847.7 ****** DAY 26 3 8 3 ** ** ** 3 26 29 23 5 MIN. QFE PRESSURE IN HPA 836.6 834.3 835.8 834.8 ****** ****** ****** 832.3 833.7 838.0 837.5 837.7 ****** DAY 17 23 20 9 ** ** ** 1 4 1 1 25 MEAN QNH PRESSURE IN HPA 1019.9 1016.3 1019.0 1016.9 ****** ****** ****** 1011.4 1014.7 1020.7 1022.4 1020.9 ****** MAX. QNH PRESSURE IN HPA 1025.9 1022.0 1025.4 1020.4 ****** ****** ****** 1014.2 1019.0 1025.1 1027.3 1027.1 ****** DAY 26 3 8 3 ** ** ** 3 26 29 23 5 MIN. QNH PRESSURE IN HPA 1014.1 1011.4 1013.2 1012.0 ****** ****** ****** 1009.1 1010.7 1015.7 1015.1 1015.4 ****** DAY 17 23 20 9 ** ** ** 1 4 1 1 25 MEAN QFF PRESSURE IN HPA 1021.8 1015.9 1016.1 1010.5 ****** ****** ****** 997.0 1003.3 1013.9 1019.8 1020.4 ****** MAX. QFF PRESSURE IN HPA 1030.5 1022.3 1022.2 1015.8 ****** ****** ****** 1000.0 1010.1 1019.7 1026.8 1030.1 ****** DAY 26 1 9 3 ** ** ** 31 26 19 23 28 MIN. QFF PRESSURE IN HPA 1015.0 1008.5 1009.4 1004.0 ****** ****** ****** 993.7 998.3 1006.8 1010.6 1014.1 ****** DAY 2 23 19 15 ** ** ** 1 4 1 1 25 PRESSURE AT HOUR 1800 UTC. MEAN QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** 843.2 ****** ****** ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** 846.4 ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** 19 ** ** MIN. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** 839.7 ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** 1 ** ** MEAN QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** 1021.8 ****** ****** ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** 1025.5 ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** 19 ** ** MIN. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** 1017.7 ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** 1 ** ** MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** 1012.1 ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** 1017.8 ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** 19 ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** 1007.2 ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** 1 ** ** 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 ZARGHAN (40847) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 29 47 N LONGITUDE 52 43 E DATA PROCESSING CENTER ELEVATION 1596.0 M MEANS AND EXTREMES FOR THE YEAR 1991 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AIR TEMPERATURE (C) 6.1 6.6 11.8 17.9 23.2 28.8 31.8 30.9 26.8 19.5 13.4 8.0 18.7 MINIMUN AIR TEMPERATURE (C) -0.1 -0.2 4.3 6.8 9.3 13.0 17.0 17.0 13.1 7.8 1.8 2.7 7.7 DAYS WITH MINIMUM TEMP. >=21 0 0 0 0 0 0 1 4 0 0 0 0 5 DAYS WITH MINIMUM TEMP. <=-4 5 5 0 0 0 0 0 0 0 0 0 2 12 DAYS WITH FREEZING MIN.<= 0 19 16 5 0 0 0 0 0 0 0 11 12 63 TEMPERATURE RECORDS LOWEST(C) -6.0 -5.8 -1.8 2.2 3.6 8.5 13.8 10.8 7.8 3.2 -1.6 -4.0 -6.0 DAY 7 16 8 14 24 1 15 25 28 31 28 30 MAXIMUM AIR TEMPERATURE (C) 10.4 11.8 16.9 23.7 29.5 35.2 38.6 37.5 33.7 25.8 20.0 12.0 24.6 DAYS WITH MAXIMUM TEMP. >=30 0 0 0 0 14 30 31 31 26 0 0 0 132 DAYS WITH MAXIMUM TEMP. <= 0 0 0 0 0 0 0 0 0 0 0 0 0 0 TEMPERATURE RECORDS HIGHEST(C) 14.5 16.8 23.5 29.6 35.0 37.4 41.0 39.8 38.4 29.0 24.8 17.0 41.0 DAY 24 28 22 28 31 28 11 9 10 11 2 5 DIF. BETWEEN (MAX.-MIN.) (C) 10.5 12.0 12.6 16.9 20.2 22.2 21.6 20.5 20.6 18.0 18.2 9.3 16.9 MEAN DAILY TEMP. (MDT) (C) 5.2 5.8 10.6 15.2 19.4 24.1 27.8 27.2 23.4 16.8 10.9 7.3 16.1 COOLING DEG. DAYS(BASE 21 0C) 0.0 0.0 0.0 0.0 11.9 92.9 211.2 193.2 80.4 0.0 0.0 0.0 589.7 HEATING DEG. DAYS(BASE 18 0C) 397.3 341.6 230.0 86.2 11.9 0.0 0.0 0.0 0.1 42.6 213.1 330.5 1653.3 DEWPOINT (MEAN C) -0.7 -3.0 2.0 3.0 -0.1 4.0 6.7 2.5 0.3 0.6 -3.9 2.0 1.1 MIXING RATIO (G/KG) 4.61 4.03 5.56 5.84 4.76 6.25 7.59 5.77 4.78 4.98 3.46 5.43 5.26 VAPOUR PRESSURE (HPA) 6.19 5.41 7.43 7.82 6.36 8.31 10.04 7.67 6.40 6.70 4.67 7.28 7.02 SATURATION DEF. (HPA) 3.56 4.79 7.12 14.02 23.60 33.59 39.82 39.57 31.33 17.27 11.81 3.85 19.19 RELATIVE HUMIDITY (MEAN %) 66 57 56 42 25 23 23 19 21 33 33 69 39 RELATIVE HUMIDITY (MAX. %) 85 81 83 74 51 45 44 40 42 60 57 87 62 RELATIVE HUMIDITY (MIN. %) 51 36 36 25 14 15 15 10 11 19 20 53 25 RELATIVE HUMIDITY (MEAN% 03UTC) 84 81 82 74 51 45 44 40 42 60 57 84 62 RELATIVE HUMIDITY (MEAN% 09UTC) 56 47 44 29 17 16 17 12 13 22 24 61 30 RELATIVE HUMIDITY (MEAN% 15UTC) 63 50 49 36 19 19 19 15 18 28 28 68 34 RH=0 => RELATIVE HUMIDITY < 0.5% AMOUNT OF PRECIPITATION MM. 177.3 43.2 55.5 7.7 0.0 0.3 0.0 0.0 3.0 5.0 0.0 81.9 373.9 DAYS WITH PRECIPITATION >=10 5 1 2 0 0 0 0 0 0 0 0 2 10 DAYS WITH PRECIPITATION >= 5 8 2 6 1 0 0 0 0 0 0 0 4 21 DAYS WITH PRECIPITATION >= 1 9 10 8 2 0 0 0 0 1 2 0 12 44 DAYS WITH PRECIPITATION 11 11 12 5 0 2 0 0 1 6 0 17 65 GREATEST DAILY PRECIPITATION 45.0 14.0 14.0 6.0 0.0 0.3 0.0 0.0 3.0 3.0 0.0 33.0 45.0 DAY 14 21 7 5 ** 24 ** ** 30 2 ** 7 DAY WITH THUNDER STORM 4 1 0 1 0 1 0 0 1 3 0 1 12 DAYS WITH SNOW OR SLEET 1 1 0 0 0 0 0 0 0 0 0 1 3 DAYS WITH DUST 0 0 2 0 6 2 2 1 3 1 2 0 19 WIND DIRECTION (PREVAILING) 315 225 270 270 315 270 225 315 315 315 315 180 315 PREVAILING WIND SPEED(KNOTS) 6.2 12.8 12.9 12.1 9.1 9.1 8.2 6.4 7.7 7.2 7.4 14.2 7.7 PREVAILING WIND PERCENT 5.8 8.6 10.3 10.7 17.4 9.3 8.4 5.8 6.7 11.0 8.0 12.9 7.5 CALMS PERCENT OF WIND 78.7 65.0 62.6 60.0 51.6 60.7 74.8 68.4 74.0 72.9 74.0 65.2 67.3 NO. OF WIND OBSERVATION 155 140 155 150 155 150 155 155 150 155 150 155 1825 VECTOR WIND DIRECTION (MEAN) 261 242 241 257 285 308 227 244 293 274 270 206 260 VECTOR WIND MAGNITUDE(KNOTS) 0.8 1.9 1.9 1.9 3.9 1.2 0.5 0.3 0.8 1.5 1.0 2.1 1.3 WIND STEADINESES (MEAN %) 50.0 57.6 51.4 54.3 78.0 40.0 25.0 15.0 40.0 71.4 50.0 61.8 46.4 WIND SPEED (MEAN KNOTS) 1.6 3.3 3.7 3.5 5.0 3.0 2.0 2.0 2.0 2.1 2.0 3.4 2.8 FASTEST WIND DIRECTION 170 210 280 280 290 310 210 290 290 300 280 180 180 FASTEST WIND SPEED (KNOTS) 17 23 27 29 29 19 19 21 21 19 27 31 31 DAY 25 21 7 10 18 3 23 12 25 23 5 14 DAYS WITH SKY CLEAR (0-2)/8 16 13 14 13 21 27 31 31 28 22 26 9 251 DAYS WITH P.CLOUDY (3-6)/8 5 7 10 12 8 3 0 0 2 7 4 10 68 DAYS WITH CLOUDY (7-8)/8 10 8 7 5 2 0 0 0 0 2 0 12 46 DAYS WITH VISIBILITY =< 2 KM 2 2 0 0 0 0 0 0 0 0 0 2 6 DURATION OF SUNSHINE HOURS 142.6 181.2 227.3 276.5 333.3 344.7 355.6 345.6 299.9 264.8 261.7 144.6 3177.8 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ZARGHAN (40847) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 29 47 N LONGITUDE 52 43 E DATA PROCESSING CENTER ELEVATION 1596.0 M MEANS AND EXTREMES FOR THE YEAR 1991 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL MEAN QFE PRESSURE IN HPA 841.8 841.5 839.3 840.7 837.9 835.9 833.5 835.1 839.8 843.5 844.2 842.3 839.6 MAX. QFE PRESSURE IN HPA 848.0 850.3 845.6 846.5 842.8 841.2 838.2 839.8 844.4 848.2 849.1 850.2 850.3 DAY-HOUR 12- 6 16- 6 18- 6 18- 6 9- 6 23- 6 1- 3 31- 6 30- 6 20- 6 14- 6 8- 6 MIN. QFE PRESSURE IN HPA 832.6 834.2 831.4 836.0 833.7 830.9 828.4 831.1 834.0 839.2 838.3 836.0 828.4 DAY-HOUR 25-12 8-12 6-15 11-12 28-12 11-12 14-12 11-12 3-12 15-12 8-12 22- 6 MEAN QNH PRESSURE IN HPA 1020.2 1019.8 1017.2 1018.8 1015.6 1013.3 1010.4 1012.4 1017.8 1022.2 1022.9 1020.7 1017.6 MAX. QNH PRESSURE IN HPA 1027.4 1030.1 1024.6 1025.7 1021.3 1019.5 1016.0 1017.8 1023.2 1027.6 1028.7 1030.0 1030.1 DAY-HOUR 12- 6 16- 6 18- 6 18- 6 9- 6 23- 6 1- 3 31- 6 30- 6 20- 6 14- 6 8- 6 MIN. QNH PRESSURE IN HPA 1009.4 1011.3 1008.0 1013.4 1010.7 1007.4 1004.5 1007.7 1011.1 1017.1 1016.1 1013.4 1004.5 DAY-HOUR 25-12 8-12 6-15 11-12 28-12 11-12 14-12 11-12 3-12 15-12 8-12 22- 6 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 841.9 841.7 839.8 841.3 838.5 836.8 834.5 836.1 840.7 844.2 845.0 842.5 840.2 MAX. QFE PRESSURE IN HPA 846.7 849.5 844.4 845.5 841.9 840.7 838.2 839.5 843.3 846.3 848.4 848.8 849.5 DAY 13 16 18 18 9 23 1 31 28 20 14 8 MIN. QFE PRESSURE IN HPA 834.1 835.9 835.5 838.3 835.0 833.1 830.5 833.9 836.7 841.5 841.3 836.5 830.5 DAY 26 8 1 11 28 12 14 11 3 15 8 22 MEAN QNH PRESSURE IN HPA 1020.2 1020.1 1017.8 1019.6 1016.3 1014.3 1011.6 1013.5 1018.9 1022.9 1023.9 1021.0 1018.3 MAX. QNH PRESSURE IN HPA 1025.9 1029.2 1023.2 1024.5 1020.3 1018.9 1016.0 1017.5 1021.9 1025.4 1027.9 1028.3 1029.2 DAY 13 16 18 18 9 23 1 31 28 20 14 8 MIN. QNH PRESSURE IN HPA 1011.2 1013.3 1012.8 1016.1 1012.2 1010.0 1007.0 1010.9 1014.2 1019.8 1019.6 1014.0 1007.0 DAY 26 8 1 11 28 12 14 11 3 15 8 22 MEAN QFF PRESSURE IN HPA 1020.7 1020.3 1014.5 1013.2 1006.7 1001.4 996.9 999.2 1007.3 1015.9 1020.9 1019.8 1011.4 MAX. QFF PRESSURE IN HPA 1027.8 1032.5 1022.7 1018.4 1011.5 1006.9 1001.6 1004.4 1014.1 1020.2 1026.0 1026.5 1032.5 DAY 7 16 18 18 8 2 1 31 28 28 25 8 MIN. QFF PRESSURE IN HPA 1010.3 1011.7 1008.4 1007.3 1000.7 996.3 992.5 994.1 1001.8 1011.2 1014.4 1012.0 992.5 DAY 26 28 23 28 28 11 13 11 3 15 16 22 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ZARGHAN (40847) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 29 47 N LONGITUDE 52 43 E DATA PROCESSING CENTER ELEVATION 1596.0 M MEANS AND EXTREMES FOR THE YEAR 1991 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 0600 UTC. MEAN QFE PRESSURE IN HPA 843.3 843.0 840.8 842.2 839.2 837.2 835.0 836.8 841.6 845.3 846.0 843.6 841.2 MAX. QFE PRESSURE IN HPA 848.0 850.3 845.6 846.5 842.8 841.2 838.2 839.8 844.4 848.2 849.1 850.2 850.3 DAY 12 16 18 18 9 23 1 31 30 20 14 8 MIN. QFE PRESSURE IN HPA 835.8 836.3 836.5 838.9 835.6 833.6 830.7 834.0 837.7 842.4 841.6 836.0 830.7 DAY 26 8 7 11 29 11 14 11 3 15 8 22 MEAN QNH PRESSURE IN HPA 1021.9 1021.5 1019.0 1020.7 1017.1 1014.8 1012.2 1014.3 1019.9 1024.2 1025.1 1022.3 1019.4 MAX. QNH PRESSURE IN HPA 1027.4 1030.1 1024.6 1025.7 1021.3 1019.5 1016.0 1017.8 1023.2 1027.6 1028.7 1030.0 1030.1 DAY 12 16 18 18 9 23 1 31 30 20 14 8 MIN. QNH PRESSURE IN HPA 1013.2 1013.7 1014.0 1016.8 1012.9 1010.6 1007.2 1011.1 1015.4 1020.9 1019.9 1013.4 1007.2 DAY 26 8 7 11 29 11 14 11 3 15 8 22 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** PRESSURE AT HOUR 0900 UTC. MEAN QFE PRESSURE IN HPA 841.8 841.7 839.5 840.9 838.1 836.2 833.7 835.4 840.1 843.5 844.1 842.3 839.8 MAX. QFE PRESSURE IN HPA 846.3 849.2 844.2 845.2 841.3 840.0 837.1 838.8 843.4 845.7 846.6 849.8 849.8 DAY 13 15 18 18 8 1 1 31 28 20 14 7 MIN. QFE PRESSURE IN HPA 835.2 835.5 835.7 837.2 834.7 832.4 829.9 832.8 835.8 840.2 839.8 836.0 829.9 DAY 25 8 6 10 28 11 14 11 3 15 8 22 MEAN QNH PRESSURE IN HPA 1020.2 1020.0 1017.5 1019.1 1015.8 1013.6 1010.8 1012.7 1018.2 1022.2 1022.9 1020.7 1017.8 MAX. QNH PRESSURE IN HPA 1025.4 1028.8 1023.0 1024.1 1019.6 1018.1 1014.7 1016.7 1022.0 1024.7 1025.8 1029.5 1029.5 DAY 13 15 18 18 8 1 1 31 28 20 14 7 MIN. QNH PRESSURE IN HPA 1012.5 1012.8 1013.0 1014.8 1011.9 1009.2 1006.3 1009.6 1013.2 1018.3 1017.8 1013.4 1006.3 DAY 25 8 6 10 28 11 14 11 3 15 8 22 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** PRESSURE AT HOUR 1200 UTC. MEAN QFE PRESSURE IN HPA 840.7 840.2 838.0 839.4 836.8 834.7 832.2 833.8 838.2 842.1 842.6 841.2 838.3 MAX. QFE PRESSURE IN HPA 845.5 847.9 842.5 843.7 839.8 838.5 835.8 837.1 841.3 844.4 845.2 848.2 848.2 DAY 12 15 18 19 8 1 1 31 30 20 13 7 MIN. QFE PRESSURE IN HPA 832.6 834.2 833.8 836.0 833.7 830.9 828.4 831.1 834.0 839.2 838.3 836.4 828.4 DAY 25 8 6 11 28 11 14 11 3 15 8 25 MEAN QNH PRESSURE IN HPA 1018.9 1018.3 1015.7 1017.3 1014.3 1011.8 1008.9 1010.8 1016.0 1020.5 1021.1 1019.4 1016.1 MAX. QNH PRESSURE IN HPA 1024.5 1027.3 1021.0 1022.4 1017.8 1016.3 1013.2 1014.7 1019.6 1023.2 1024.1 1027.6 1027.6 DAY 12 15 18 19 8 1 1 31 30 20 13 7 MIN. QNH PRESSURE IN HPA 1009.4 1011.3 1010.8 1013.4 1010.7 1007.4 1004.5 1007.7 1011.1 1017.1 1016.1 1013.9 1004.5 DAY 25 8 6 11 28 11 14 11 3 15 8 25 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ZARGHAN (40847) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 29 47 N LONGITUDE 52 43 E DATA PROCESSING CENTER ELEVATION 1596.0 M MEANS AND EXTREMES FOR THE YEAR 1991 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 1500 UTC. MEAN QFE PRESSURE IN HPA 841.3 840.8 838.5 839.6 837.0 834.7 831.9 833.6 838.4 842.6 843.1 841.8 838.6 MAX. QFE PRESSURE IN HPA 846.3 849.0 842.7 844.0 839.8 839.3 835.4 837.1 841.8 845.0 845.7 848.5 849.0 DAY 12 15 17 18 8 23 1 31 29 27 13 7 MIN. QFE PRESSURE IN HPA 833.1 835.1 831.4 836.8 833.7 831.1 828.8 831.3 834.0 839.9 838.8 837.4 828.8 DAY 25 8 6 11 28 10 14 11 3 9 8 25 MEAN QNH PRESSURE IN HPA 1019.6 1019.0 1016.4 1017.5 1014.5 1011.9 1008.6 1010.5 1016.2 1021.1 1021.7 1020.2 1016.4 MAX. QNH PRESSURE IN HPA 1025.4 1028.6 1021.2 1022.7 1017.8 1017.2 1012.7 1014.7 1020.2 1023.9 1024.7 1028.0 1028.6 DAY 12 15 17 18 8 23 1 31 29 27 13 7 MIN. QNH PRESSURE IN HPA 1010.0 1012.3 1008.0 1014.3 1010.7 1007.7 1005.0 1007.9 1011.1 1017.9 1016.7 1015.0 1005.0 DAY 25 8 6 11 28 10 14 11 3 9 8 25 MEAN QFF PRESSURE IN HPA 1020.0 1019.2 1012.9 1011.0 1004.9 998.9 993.7 996.2 1004.7 1014.0 1018.6 1018.9 1009.4 MAX. QFF PRESSURE IN HPA 1028.0 1031.7 1020.6 1016.4 1009.4 1005.3 998.2 1001.4 1011.3 1018.2 1022.6 1025.9 1031.7 DAY 12 15 17 18 8 23 1 31 30 27 27 7 MIN. QFF PRESSURE IN HPA 1008.5 1009.1 1002.8 1005.8 999.3 994.3 990.2 992.1 998.5 1009.7 1013.2 1012.0 990.2 DAY 25 28 6 28 28 11 13 11 3 9 6 14 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 ZARGHAN (40847) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 29 47 N LONGITUDE 52 43 E DATA PROCESSING CENTER ELEVATION 1596.0 M MEANS AND EXTREMES FOR THE YEAR 1992 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AIR TEMPERATURE (C) 2.6 5.9 8.8 15.2 21.1 28.2 31.5 29.7 24.9 19.4 13.5 5.7 17.2 MINIMUN AIR TEMPERATURE (C) -2.7 -1.8 0.4 6.1 10.4 13.2 17.0 16.6 11.0 5.5 2.1 0.3 6.5 DAYS WITH MINIMUM TEMP. >=21 0 0 0 0 0 0 2 3 0 0 0 0 5 DAYS WITH MINIMUM TEMP. <=-4 13 12 3 0 0 0 0 0 0 0 1 3 32 DAYS WITH FREEZING MIN.<= 0 24 20 16 1 0 0 0 0 0 0 10 13 84 TEMPERATURE RECORDS LOWEST(C) -13.6 -8.4 -6.6 0.0 5.0 9.5 13.0 11.3 6.0 1.0 -4.6 -4.8 -13.6 DAY 29 13 12 8 8 21 11 23 12 29 29 10 MAXIMUM AIR TEMPERATURE (C) 6.5 11.3 14.1 20.4 26.4 34.2 37.2 35.4 31.2 26.2 20.1 10.0 22.7 DAYS WITH MAXIMUM TEMP. >=30 0 0 0 0 6 30 31 31 25 1 0 0 124 DAYS WITH MAXIMUM TEMP. <= 0 0 0 0 0 0 0 0 0 0 0 0 0 0 TEMPERATURE RECORDS HIGHEST(C) 12.0 17.5 19.5 26.4 32.0 38.6 39.4 38.0 32.5 30.3 23.5 16.5 39.4 DAY 16 23 30 22 30 30 7 1 20 4 2 2 DIF. BETWEEN (MAX.-MIN.) (C) 9.2 13.1 13.7 14.3 16.0 21.0 20.2 18.8 20.2 20.7 18.0 9.7 16.2 MEAN DAILY TEMP. (MDT) (C) 1.9 4.7 7.2 13.2 18.4 23.7 27.1 26.0 21.1 15.9 11.1 5.2 14.6 COOLING DEG. DAYS(BASE 21 0C) 0.0 0.0 0.0 0.0 5.3 81.4 188.4 155.6 20.5 0.0 0.0 0.0 451.2 HEATING DEG. DAYS(BASE 18 0C) 497.7 385.0 333.5 144.2 26.9 0.0 0.0 0.0 0.5 70.3 207.6 397.9 2063.6 DEWPOINT (MEAN C) -3.1 -5.0 -3.9 1.2 5.5 3.4 5.6 3.9 -0.4 -1.7 -2.3 1.0 0.4 MIXING RATIO (G/KG) 3.80 3.39 3.81 5.26 6.99 6.06 7.06 6.23 4.62 4.27 4.00 5.02 5.04 VAPOUR PRESSURE (HPA) 5.10 4.54 5.10 7.04 9.34 8.06 9.36 8.29 6.19 5.73 5.39 6.74 6.74 SATURATION DEF. (HPA) 2.58 5.26 6.79 11.20 16.86 32.28 38.95 35.40 27.42 18.54 11.20 2.78 17.44 RELATIVE HUMIDITY (MEAN %) 68 51 47 44 41 24 22 22 21 27 38 75 40 RELATIVE HUMIDITY (MAX. %) 85 77 77 71 65 45 43 40 40 48 62 89 62 RELATIVE HUMIDITY (MIN. %) 53 33 29 28 26 14 15 14 13 17 24 61 27 RELATIVE HUMIDITY (MEAN% 03UTC) 82 76 76 70 65 45 43 40 40 46 62 88 61 RELATIVE HUMIDITY (MEAN% 09UTC) 62 41 34 34 33 16 15 15 15 22 27 69 32 RELATIVE HUMIDITY (MEAN% 15UTC) 69 43 40 38 33 19 18 17 17 21 33 73 35 RH=0 => RELATIVE HUMIDITY < 0.5% AMOUNT OF PRECIPITATION MM. 78.6 38.7 28.9 17.3 24.2 0.0 0.0 0.0 0.0 0.0 1.0 160.3 349.0 DAYS WITH PRECIPITATION >=10 2 1 2 0 0 0 0 0 0 0 0 7 12 DAYS WITH PRECIPITATION >= 5 7 2 2 2 2 0 0 0 0 0 0 8 23 DAYS WITH PRECIPITATION >= 1 11 3 5 3 5 0 0 0 0 0 1 13 41 DAYS WITH PRECIPITATION 13 9 10 7 9 0 0 1 0 0 1 16 66 GREATEST DAILY PRECIPITATION 20.0 28.0 13.0 8.0 7.0 0.0 0.0 0.0 0.0 0.0 1.0 39.0 39.0 DAY 21 25 31 26 2 ** ** ** ** ** 26 9 DAY WITH THUNDER STORM 0 0 0 1 0 0 0 0 0 0 0 0 1 DAYS WITH SNOW OR SLEET 3 0 0 0 0 0 0 0 0 0 0 1 4 DAYS WITH DUST 1 1 2 2 2 3 1 2 0 1 0 0 15 WIND DIRECTION (PREVAILING) 225 225 270 270 270 315 225 225 315 180 180 225 225 PREVAILING WIND SPEED(KNOTS) 7.9 10.3 9.1 9.6 7.6 8.9 6.3 5.5 4.8 4.9 4.6 7.8 8.3 PREVAILING WIND PERCENT 10.3 15.2 15.5 10.7 11.0 12.0 8.4 7.1 6.7 8.4 4.7 5.8 7.8 CALMS PERCENT OF WIND 69.7 50.3 56.1 60.0 54.2 54.7 60.0 61.9 75.3 69.7 73.8 79.4 63.8 NO. OF WIND OBSERVATION 155 145 155 150 155 150 155 155 150 155 149 155 1829 VECTOR WIND DIRECTION (MEAN) 228 236 241 265 251 247 229 285 322 237 239 257 246 VECTOR WIND MAGNITUDE(KNOTS) 1.3 2.4 2.5 1.9 1.8 1.8 0.9 0.3 0.4 0.8 0.6 0.8 1.3 WIND STEADINESES (MEAN %) 59.1 54.5 67.6 61.3 52.9 50.0 32.1 12.5 30.8 50.0 37.5 66.7 50.0 WIND SPEED (MEAN KNOTS) 2.2 4.4 3.7 3.1 3.4 3.6 2.8 2.4 1.3 1.6 1.6 1.2 2.6 FASTEST WIND DIRECTION 170 210 240 280 310 300 170 300 220 240 230 240 300 FASTEST WIND SPEED (KNOTS) 19 19 23 17 19 39 19 39 12 12 17 14 39 DAY 3 4 11 16 20 6 13 11 30 1 26 4 DAYS WITH SKY CLEAR (0-2)/8 17 19 13 13 14 27 29 28 30 31 15 13 249 DAYS WITH P.CLOUDY (3-6)/8 4 5 12 10 14 3 2 3 0 0 10 7 70 DAYS WITH CLOUDY (7-8)/8 10 5 6 7 3 0 0 0 0 0 5 11 47 DAYS WITH VISIBILITY =< 2 KM 4 2 0 0 0 0 0 0 0 0 0 7 13 DURATION OF SUNSHINE HOURS 162.4 221.9 215.7 228.7 284.0 341.3 346.5 324.5 314.5 302.6 215.0 145.5 3102.6 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ZARGHAN (40847) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 29 47 N LONGITUDE 52 43 E DATA PROCESSING CENTER ELEVATION 1596.0 M MEANS AND EXTREMES FOR THE YEAR 1992 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL MEAN QFE PRESSURE IN HPA 841.2 839.8 839.9 839.9 840.4 836.3 834.4 836.3 840.5 842.3 844.7 842.6 839.9 MAX. QFE PRESSURE IN HPA 850.9 845.2 848.0 848.0 844.4 841.8 839.2 841.3 844.7 847.5 849.0 849.1 850.9 DAY-HOUR 10- 6 13- 6 13- 6 26- 6 14- 6 6- 3 6- 3 16- 6 21- 6 29- 3 18- 6 12- 3 MIN. QFE PRESSURE IN HPA 835.0 834.0 832.6 833.4 835.8 829.1 829.5 830.2 836.1 836.9 838.7 837.8 829.1 DAY-HOUR 2-15 11-12 31- 3 18-12 4-12 27-15 19-15 1-12 5-15 6-12 27-12 19-12 MEAN QNH PRESSURE IN HPA 1019.5 1017.9 1017.9 1017.9 1018.5 1013.8 1011.5 1013.7 1018.7 1020.7 1023.5 1021.1 1017.9 MAX. QNH PRESSURE IN HPA 1030.8 1024.1 1027.4 1027.4 1023.2 1020.2 1017.1 1019.6 1023.6 1026.8 1028.6 1028.7 1030.8 DAY-HOUR 10- 6 13- 6 13- 6 26- 6 14- 6 6- 3 6- 3 16- 6 21- 6 29- 3 18- 6 12- 3 MIN. QNH PRESSURE IN HPA 1012.2 1011.1 1009.4 1010.4 1013.2 1005.3 1005.8 1006.6 1013.5 1014.4 1016.5 1015.5 1005.3 DAY-HOUR 2-15 11-12 31- 3 18-12 4-12 27-15 19-15 1-12 5-15 6-12 27-12 19-12 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 841.4 840.1 840.3 840.3 841.0 837.2 835.6 837.4 841.6 843.3 845.6 843.1 840.6 MAX. QFE PRESSURE IN HPA 850.6 844.0 845.8 846.8 843.9 841.8 839.2 840.8 844.4 847.5 848.9 849.1 850.6 DAY 10 13 13 26 22 6 6 16 21 29 18 12 MIN. QFE PRESSURE IN HPA 837.0 834.5 832.6 835.3 837.3 831.4 832.2 833.6 839.0 838.6 840.2 838.4 831.4 DAY 25 25 31 18 4 28 19 2 9 7 27 4 MEAN QNH PRESSURE IN HPA 1019.7 1018.2 1018.4 1018.5 1019.2 1014.7 1012.9 1015.0 1019.9 1021.9 1024.6 1021.7 1018.7 MAX. QNH PRESSURE IN HPA 1030.4 1022.7 1024.8 1026.0 1022.6 1020.2 1017.1 1019.0 1023.2 1026.8 1028.5 1028.7 1030.4 DAY 10 13 13 26 22 6 6 16 21 29 18 12 MIN. QNH PRESSURE IN HPA 1014.6 1011.6 1009.4 1012.6 1014.9 1008.0 1008.9 1010.6 1016.9 1016.4 1018.3 1016.2 1008.0 DAY 25 25 31 18 4 28 19 2 9 7 27 4 MEAN QFF PRESSURE IN HPA 1022.3 1019.1 1017.5 1013.1 1009.9 1001.8 997.8 1001.0 1009.6 1015.5 1021.5 1022.1 1012.6 MAX. QFF PRESSURE IN HPA 1035.9 1027.9 1027.0 1020.1 1016.1 1008.9 1001.4 1005.2 1012.9 1023.5 1026.5 1032.3 1035.9 DAY 10 13 13 26 14 7 16 22 21 29 18 12 MIN. QFF PRESSURE IN HPA 1013.7 1008.2 1004.2 1005.3 1005.1 992.5 993.7 995.3 1006.4 1007.7 1014.3 1012.7 992.5 DAY 1 25 31 18 7 28 19 2 17 7 26 4 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ZARGHAN (40847) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 29 47 N LONGITUDE 52 43 E DATA PROCESSING CENTER ELEVATION 1596.0 M MEANS AND EXTREMES FOR THE YEAR 1992 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 0600 UTC. MEAN QFE PRESSURE IN HPA 842.7 841.2 841.4 841.2 841.4 837.4 835.7 837.8 842.2 843.9 846.3 843.9 841.3 MAX. QFE PRESSURE IN HPA 850.9 845.2 848.0 848.0 844.4 841.7 839.0 841.3 844.7 847.5 849.0 848.3 850.9 DAY 10 13 13 26 14 7 6 16 21 30 18 12 MIN. QFE PRESSURE IN HPA 838.0 835.8 834.5 835.6 837.8 831.6 832.0 833.8 839.4 839.3 841.2 839.6 831.6 DAY 25 25 31 18 4 28 19 2 6 7 27 4 MEAN QNH PRESSURE IN HPA 1021.2 1019.5 1019.7 1019.5 1019.7 1015.1 1013.1 1015.5 1020.6 1022.6 1025.4 1022.7 1019.5 MAX. QNH PRESSURE IN HPA 1030.8 1024.1 1027.4 1027.4 1023.2 1020.1 1016.9 1019.6 1023.6 1026.8 1028.6 1027.8 1030.8 DAY 10 13 13 26 14 7 6 16 21 30 18 12 MIN. QNH PRESSURE IN HPA 1015.7 1013.2 1011.6 1012.9 1015.5 1008.2 1008.7 1010.8 1017.4 1017.2 1019.5 1017.6 1008.2 DAY 25 25 31 18 4 28 19 2 6 7 27 4 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** PRESSURE AT HOUR 0900 UTC. MEAN QFE PRESSURE IN HPA 841.2 840.1 840.0 840.1 840.7 836.6 834.8 836.5 840.8 842.2 844.5 842.5 840.0 MAX. QFE PRESSURE IN HPA 849.2 844.2 846.0 846.2 843.5 841.2 838.0 839.9 843.5 846.2 847.8 847.1 849.2 DAY 10 16 13 26 14 6 6 16 21 30 4 11 MIN. QFE PRESSURE IN HPA 836.6 835.5 835.0 834.2 837.1 831.0 831.3 832.3 838.1 837.7 839.9 838.9 831.0 DAY 25 11 31 18 4 27 19 2 6 7 26 9 MEAN QNH PRESSURE IN HPA 1019.5 1018.2 1018.1 1018.1 1018.9 1014.1 1012.0 1014.0 1019.0 1020.7 1023.3 1021.0 1018.1 MAX. QNH PRESSURE IN HPA 1028.8 1023.0 1025.1 1025.3 1022.2 1019.5 1015.7 1017.9 1022.2 1025.3 1027.2 1026.4 1028.8 DAY 10 16 13 26 14 6 6 16 21 30 4 11 MIN. QNH PRESSURE IN HPA 1014.1 1012.8 1012.2 1011.3 1014.7 1007.5 1007.9 1009.1 1015.8 1015.4 1017.9 1016.8 1007.5 DAY 25 11 31 18 4 27 19 2 6 7 26 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 840.1 838.6 838.6 838.8 839.5 835.3 833.2 835.0 839.1 840.8 843.3 841.6 838.7 MAX. QFE PRESSURE IN HPA 847.5 842.4 844.0 844.5 843.6 840.6 836.3 838.7 841.8 844.7 846.5 846.2 847.5 DAY 10 16 13 26 24 6 6 15 21 29 4 11 MIN. QFE PRESSURE IN HPA 835.7 834.0 834.1 833.4 835.8 829.4 830.0 830.2 836.3 836.9 838.7 837.8 829.4 DAY 25 11 31 18 4 27 19 1 6 6 27 19 MEAN QNH PRESSURE IN HPA 1018.2 1016.5 1016.4 1016.7 1017.5 1012.6 1010.1 1012.2 1017.0 1019.0 1021.9 1019.9 1016.5 MAX. QNH PRESSURE IN HPA 1026.8 1020.9 1022.7 1023.3 1022.3 1018.8 1013.7 1016.5 1020.2 1023.6 1025.7 1025.3 1026.8 DAY 10 16 13 26 24 6 6 15 21 29 4 11 MIN. QNH PRESSURE IN HPA 1013.0 1011.1 1011.2 1010.4 1013.2 1005.7 1006.4 1006.6 1013.7 1014.4 1016.5 1015.5 1005.7 DAY 25 11 31 18 4 27 19 1 6 6 27 19 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ZARGHAN (40847) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 29 47 N LONGITUDE 52 43 E DATA PROCESSING CENTER ELEVATION 1596.0 M MEANS AND EXTREMES FOR THE YEAR 1992 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 1500 UTC. MEAN QFE PRESSURE IN HPA 840.7 839.2 839.1 839.0 839.5 835.3 832.9 834.9 839.1 841.1 843.7 842.0 838.9 MAX. QFE PRESSURE IN HPA 847.8 842.7 844.0 844.1 843.6 840.7 836.8 837.7 841.6 845.3 846.7 846.4 847.8 DAY 10 16 13 25 24 6 6 11 21 29 4 11 MIN. QFE PRESSURE IN HPA 835.0 835.4 834.5 833.7 836.1 829.1 829.5 831.0 836.1 837.0 839.3 838.0 829.1 DAY 2 11 21 18 4 27 19 2 5 6 27 19 MEAN QNH PRESSURE IN HPA 1018.9 1017.1 1017.0 1016.9 1017.5 1012.5 1009.7 1012.1 1017.0 1019.3 1022.4 1020.4 1016.7 MAX. QNH PRESSURE IN HPA 1027.2 1021.2 1022.7 1022.9 1022.3 1018.9 1014.3 1015.4 1019.9 1024.3 1025.9 1025.5 1027.2 DAY 10 16 13 25 24 6 6 11 21 29 4 11 MIN. QNH PRESSURE IN HPA 1012.2 1012.7 1011.6 1010.7 1013.5 1005.3 1005.8 1007.5 1013.5 1014.6 1017.2 1015.7 1005.3 DAY 2 11 21 18 4 27 19 2 5 6 27 19 MEAN QFF PRESSURE IN HPA 1021.4 1018.0 1016.0 1011.4 1008.0 999.5 994.7 998.1 1006.6 1012.9 1019.3 1020.6 1010.5 MAX. QFF PRESSURE IN HPA 1032.3 1024.8 1024.7 1017.2 1014.1 1007.2 997.9 1002.3 1009.4 1021.4 1025.1 1028.8 1032.3 DAY 10 12 12 26 14 6 11 31 27 29 29 11 MIN. QFF PRESSURE IN HPA 1010.1 1010.3 1006.8 1004.9 1002.3 990.5 990.8 991.8 1002.7 1006.2 1013.9 1015.2 990.5 DAY 2 25 31 18 31 28 19 1 5 6 15 4 PRESSURE AT HOUR 1800 UTC. MEAN QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** PRESSURE AT HOUR 2100 UTC. MEAN QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ZARGHAN (40847) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 29 47 N LONGITUDE 52 43 E DATA PROCESSING CENTER ELEVATION 1596.0 M MEANS AND EXTREMES FOR THE YEAR 1993 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AIR TEMPERATURE (C) 5.0 7.7 10.4 16.7 23.0 28.8 30.9 30.1 26.3 19.8 14.2 10.4 18.6 MINIMUN AIR TEMPERATURE (C) -0.9 1.1 3.2 7.0 11.2 13.9 18.1 17.4 12.3 8.2 4.1 -0.8 7.9 DAYS WITH MINIMUM TEMP. >=21 0 0 0 0 0 0 1 4 0 0 0 0 5 DAYS WITH MINIMUM TEMP. <=-4 10 5 0 0 0 0 0 0 0 0 0 0 15 DAYS WITH FREEZING MIN.<= 0 18 13 6 0 0 0 0 0 0 0 6 23 66 TEMPERATURE RECORDS LOWEST(C) -6.8 -6.0 -1.8 2.2 2.8 7.6 14.4 14.4 6.0 4.8 -2.4 -3.6 -6.8 DAY 18 8 13 1 8 5 1 4 30 9 30 7 MAXIMUM AIR TEMPERATURE (C) 8.7 12.0 14.9 21.9 28.4 34.7 36.3 35.8 32.7 25.9 20.4 17.2 24.1 DAYS WITH MAXIMUM TEMP. >=30 0 0 0 0 13 30 31 31 27 2 0 0 134 DAYS WITH MAXIMUM TEMP. <= 0 0 0 0 0 0 0 0 0 0 0 0 0 0 TEMPERATURE RECORDS HIGHEST(C) 16.8 19.5 19.0 27.0 33.6 37.2 38.5 37.6 35.5 30.5 25.5 19.5 38.5 DAY 29 28 30 20 28 18 15 15 4 1 1 2 DIF. BETWEEN (MAX.-MIN.) (C) 9.6 10.9 11.7 14.9 17.2 20.8 18.2 18.4 20.4 17.7 16.3 18.0 16.2 MEAN DAILY TEMP. (MDT) (C) 3.9 6.6 9.1 14.4 19.8 24.3 27.2 26.6 22.5 17.0 12.2 8.2 16.0 COOLING DEG. DAYS(BASE 21 0C) 0.0 0.0 0.0 0.0 17.5 102.2 193.4 174.1 56.1 0.0 0.0 0.0 543.5 HEATING DEG. DAYS(BASE 18 0C) 436.1 319.8 277.3 107.5 13.2 0.0 0.0 0.0 0.3 41.2 172.6 304.1 1672.0 DEWPOINT (MEAN C) -1.1 0.0 0.6 3.0 5.6 7.0 5.8 5.0 1.1 -0.3 -0.6 -4.6 1.8 MIXING RATIO (G/KG) 4.38 4.88 5.04 5.86 6.96 7.91 7.06 6.76 5.25 4.64 4.57 3.33 5.55 VAPOUR PRESSURE (HPA) 5.88 6.55 6.76 7.84 9.29 10.49 9.37 9.00 7.01 6.25 6.14 4.49 7.42 SATURATION DEF. (HPA) 3.17 4.35 6.34 12.05 20.30 31.36 37.25 35.56 29.55 18.23 11.05 9.00 18.18 RELATIVE HUMIDITY (MEAN %) 68 63 56 45 36 28 23 24 23 31 41 38 40 RELATIVE HUMIDITY (MAX. %) 86 84 83 75 64 49 44 46 52 53 68 62 64 RELATIVE HUMIDITY (MIN. %) 54 47 40 27 23 19 15 14 11 19 24 23 26 RELATIVE HUMIDITY (MEAN% 03UTC) 84 80 81 75 64 49 44 45 52 53 68 62 63 RELATIVE HUMIDITY (MEAN% 09UTC) 63 55 46 33 27 21 16 16 13 22 30 28 31 RELATIVE HUMIDITY (MEAN% 15UTC) 65 60 49 36 29 23 18 19 17 26 34 32 34 RH=0 => RELATIVE HUMIDITY < 0.5% AMOUNT OF PRECIPITATION MM. 105.3 115.9 97.4 14.3 0.9 0.0 0.0 2.0 0.0 3.2 7.2 0.0 346.2 DAYS WITH PRECIPITATION >=10 4 4 4 0 0 0 0 0 0 0 0 0 12 DAYS WITH PRECIPITATION >= 5 6 9 5 2 0 0 0 0 0 0 1 0 23 DAYS WITH PRECIPITATION >= 1 10 12 9 5 0 0 0 1 0 1 2 0 40 DAYS WITH PRECIPITATION 11 13 14 7 3 0 0 1 0 2 7 0 58 GREATEST DAILY PRECIPITATION 30.0 21.0 29.0 6.0 0.4 0.0 0.0 2.0 0.0 3.2 5.0 0.0 30.0 DAY 9 23 6 25 2 ** ** 26 ** 29 13 ** DAY WITH THUNDER STORM 0 0 0 0 0 0 0 0 0 0 0 0 0 DAYS WITH SNOW OR SLEET 0 1 0 0 0 0 0 0 0 0 0 0 1 DAYS WITH DUST 0 0 3 0 7 0 0 0 1 2 0 0 13 WIND DIRECTION (PREVAILING) 315 315 225 225 225 225 315 270 45 315 225 135 315 PREVAILING WIND SPEED(KNOTS) 5.8 5.0 7.6 8.9 7.6 6.1 5.3 6.2 5.1 6.8 6.4 2.5 5.9 PREVAILING WIND PERCENT 12.9 15.0 9.7 14.0 14.2 12.7 10.3 7.2 6.0 7.1 14.0 2.6 8.8 CALMS PERCENT OF WIND 71.6 57.1 53.5 50.7 51.0 53.3 63.9 73.7 76.7 71.6 68.0 85.8 64.8 NO. OF WIND OBSERVATION 155 140 155 150 155 150 155 152 150 155 150 155 1822 VECTOR WIND DIRECTION (MEAN) 280 257 258 254 255 224 9 287 277 288 245 228 260 VECTOR WIND MAGNITUDE(KNOTS) 1.0 1.0 1.3 1.8 1.6 1.1 0.5 0.7 0.2 0.6 1.3 0.3 0.8 WIND STEADINESES (MEAN %) 55.6 37.0 39.4 54.5 50.0 44.0 25.0 43.8 14.3 40.0 68.4 50.0 38.1 WIND SPEED (MEAN KNOTS) 1.8 2.7 3.3 3.3 3.2 2.5 2.0 1.6 1.4 1.5 1.9 0.6 2.1 FASTEST WIND DIRECTION 240 240 290 240 220 310 330 300 210 300 210 300 240 FASTEST WIND SPEED (KNOTS) 19 29 27 16 16 12 14 16 19 19 14 8 29 DAY 13 6 22 26 13 3 13 11 28 26 11 3 DAYS WITH SKY CLEAR (0-2)/8 12 13 15 14 21 30 25 26 29 23 16 21 245 DAYS WITH P.CLOUDY (3-6)/8 9 4 7 9 8 0 6 5 1 6 12 8 75 DAYS WITH CLOUDY (7-8)/8 10 11 9 7 2 0 0 0 0 2 2 2 45 DAYS WITH VISIBILITY =< 2 KM 3 1 0 0 0 0 0 0 0 0 0 0 4 DURATION OF SUNSHINE HOURS 158.2 171.1 206.4 260.6 313.6 366.6 345.3 334.1 316.7 265.9 240.4 262.5 3241.4 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ZARGHAN (40847) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 29 47 N LONGITUDE 52 43 E DATA PROCESSING CENTER ELEVATION 1596.0 M MEANS AND EXTREMES FOR THE YEAR 1993 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL MEAN QFE PRESSURE IN HPA 841.7 841.6 840.8 840.8 839.7 836.4 835.0 837.3 839.3 844.3 843.4 844.4 840.4 MAX. QFE PRESSURE IN HPA 848.3 847.2 847.3 847.0 843.6 841.1 840.6 842.0 844.2 851.0 848.6 852.0 852.0 DAY-HOUR 27- 6 8- 6 31- 6 17- 6 15- 6 23- 6 28- 6 28- 6 23- 6 17- 6 20- 6 26- 6 MIN. QFE PRESSURE IN HPA 834.9 834.9 831.3 835.8 834.0 832.2 828.8 832.6 834.4 838.1 838.9 837.6 828.8 DAY-HOUR 14- 3 3- 9 12-12 12-12 29-15 14-15 10-15 12-15 3-15 3-15 15-12 4-12 MEAN QNH PRESSURE IN HPA 1020.0 1019.9 1018.9 1018.9 1017.8 1013.9 1012.2 1015.0 1017.3 1023.1 1022.1 1023.3 1018.5 MAX. QNH PRESSURE IN HPA 1027.8 1026.5 1026.6 1026.2 1022.3 1019.3 1018.8 1020.4 1023.0 1030.9 1028.1 1032.1 1032.1 DAY-HOUR 27- 6 8- 6 31- 6 17- 6 15- 6 23- 6 28- 6 28- 6 23- 6 17- 6 20- 6 26- 6 MIN. QNH PRESSURE IN HPA 1012.1 1012.1 1007.9 1013.2 1011.1 1008.9 1005.0 1009.4 1011.5 1015.8 1016.8 1015.3 1005.0 DAY-HOUR 14- 3 3- 9 12-12 12-12 29-15 14-15 10-15 12-15 3-15 3-15 15-12 4-12 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY-HOUR **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY-HOUR **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** PRESSURE AT HOUR 0000 UTC. MEAN QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** PRESSURE AT HOUR 0300 UTC. MEAN QFE PRESSURE IN HPA 842.0 842.0 841.2 841.4 840.4 837.3 836.0 838.3 840.2 845.2 844.2 845.2 841.1 MAX. QFE PRESSURE IN HPA 847.6 847.0 846.6 845.2 843.1 840.6 840.4 841.3 843.2 850.3 847.4 850.1 850.3 DAY 6 8 31 1 15 23 28 29 24 17 2 26 MIN. QFE PRESSURE IN HPA 834.9 835.8 835.9 837.4 837.2 833.7 831.9 834.0 837.5 841.0 841.6 840.6 831.9 DAY 14 3 12 13 30 26 10 13 4 3 10 4 MEAN QNH PRESSURE IN HPA 1020.3 1020.4 1019.4 1019.6 1018.5 1014.9 1013.4 1016.0 1018.3 1024.2 1023.0 1024.1 1019.4 MAX. QNH PRESSURE IN HPA 1026.9 1026.2 1025.8 1024.1 1021.7 1018.8 1018.5 1019.6 1021.8 1030.1 1026.7 1029.9 1030.1 DAY 6 8 31 1 15 23 28 29 24 17 2 26 MIN. QNH PRESSURE IN HPA 1012.1 1013.2 1013.3 1015.0 1014.8 1010.7 1008.6 1011.1 1015.1 1019.2 1019.9 1018.8 1008.6 DAY 14 3 12 13 30 26 10 13 4 3 10 4 MEAN QFF PRESSURE IN HPA 1021.3 1019.7 1016.8 1013.2 1008.4 1001.6 998.4 1001.6 1006.8 1016.9 1018.8 1022.9 1012.2 MAX. QFF PRESSURE IN HPA 1028.5 1030.0 1022.3 1020.0 1014.7 1005.1 1004.7 1008.1 1012.4 1023.2 1023.9 1028.7 1030.0 DAY 27 8 31 1 15 6 28 26 30 31 30 19 MIN. QFF PRESSURE IN HPA 1011.6 1008.0 1010.1 1008.2 1001.0 997.0 992.9 996.9 1000.5 1010.4 1014.0 1016.5 992.9 DAY 9 3 12 27 29 26 15 23 4 3 11 5 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ZARGHAN (40847) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 29 47 N LONGITUDE 52 43 E DATA PROCESSING CENTER ELEVATION 1596.0 M MEANS AND EXTREMES FOR THE YEAR 1993 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 0600 UTC. MEAN QFE PRESSURE IN HPA 842.9 842.9 842.2 842.0 840.9 837.6 836.3 838.8 841.0 846.1 845.0 846.1 841.8 MAX. QFE PRESSURE IN HPA 848.3 847.2 847.3 847.0 843.6 841.1 840.6 842.0 844.2 851.0 848.6 852.0 852.0 DAY 27 8 31 17 15 23 28 28 23 17 20 26 MIN. QFE PRESSURE IN HPA 835.8 835.8 835.9 837.6 837.1 833.9 831.9 834.0 838.2 842.0 842.0 841.4 831.9 DAY 14 3 12 12 29 26 10 2 4 3 10 4 MEAN QNH PRESSURE IN HPA 1021.5 1021.5 1020.6 1020.4 1019.2 1015.3 1013.8 1016.6 1019.2 1025.1 1024.0 1025.2 1020.2 MAX. QNH PRESSURE IN HPA 1027.8 1026.5 1026.6 1026.2 1022.3 1019.3 1018.8 1020.4 1023.0 1030.9 1028.1 1032.1 1032.1 DAY 27 8 31 17 15 23 28 28 23 17 20 26 MIN. QNH PRESSURE IN HPA 1013.2 1013.2 1013.3 1015.3 1014.7 1010.9 1008.6 1011.1 1016.0 1020.4 1020.4 1019.7 1008.6 DAY 14 3 12 12 29 26 10 2 4 3 10 4 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** PRESSURE AT HOUR 0900 UTC. MEAN QFE PRESSURE IN HPA 841.7 841.9 841.1 841.1 840.0 836.8 835.3 837.8 839.7 844.4 843.4 844.5 840.6 MAX. QFE PRESSURE IN HPA 847.3 845.8 846.0 844.9 843.1 839.9 839.5 840.5 843.2 848.4 847.3 850.0 850.0 DAY 6 8 31 17 2 23 28 28 23 17 25 26 MIN. QFE PRESSURE IN HPA 835.3 834.9 833.2 837.1 835.9 832.4 830.9 834.1 836.8 840.1 840.3 839.3 830.9 DAY 14 3 12 13 29 26 10 13 3 3 16 4 MEAN QNH PRESSURE IN HPA 1020.0 1020.3 1019.4 1019.4 1018.1 1014.3 1012.6 1015.5 1017.7 1023.2 1022.1 1023.3 1018.8 MAX. QNH PRESSURE IN HPA 1026.6 1024.8 1025.1 1023.8 1021.7 1017.9 1017.5 1018.6 1021.8 1027.9 1026.6 1029.8 1029.8 DAY 6 8 31 17 2 23 28 28 23 17 25 26 MIN. QNH PRESSURE IN HPA 1012.6 1012.1 1010.1 1014.7 1013.3 1009.2 1007.4 1011.2 1014.3 1018.2 1018.4 1017.2 1007.4 DAY 14 3 12 13 29 26 10 13 3 3 16 4 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** PRESSURE AT HOUR 1200 UTC. MEAN QFE PRESSURE IN HPA 840.8 840.4 839.5 839.6 838.8 835.4 833.9 836.1 838.0 843.0 842.2 843.1 839.2 MAX. QFE PRESSURE IN HPA 846.7 844.4 844.2 843.0 841.1 837.9 837.3 839.0 841.9 847.3 845.4 848.4 848.4 DAY 6 7 31 17 2 9 28 7 30 17 25 26 MIN. QFE PRESSURE IN HPA 835.1 835.5 831.3 835.8 834.6 832.4 829.5 832.8 834.9 838.4 838.9 837.6 829.5 DAY 14 3 12 12 29 26 10 13 3 3 15 4 MEAN QNH PRESSURE IN HPA 1018.9 1018.5 1017.5 1017.6 1016.6 1012.7 1010.9 1013.5 1015.8 1021.6 1020.6 1021.7 1017.2 MAX. QNH PRESSURE IN HPA 1025.9 1023.2 1023.0 1021.6 1019.3 1015.6 1014.9 1016.9 1020.3 1026.6 1024.4 1027.9 1027.9 DAY 6 7 31 17 2 9 28 7 30 17 25 26 MIN. QNH PRESSURE IN HPA 1012.3 1012.8 1007.9 1013.2 1011.8 1009.2 1005.8 1009.6 1012.1 1016.2 1016.8 1015.3 1005.8 DAY 14 3 12 12 29 26 10 13 3 3 15 4 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ZARGHAN (40847) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 29 47 N LONGITUDE 52 43 E DATA PROCESSING CENTER ELEVATION 1596.0 M MEANS AND EXTREMES FOR THE YEAR 1993 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 1500 UTC. MEAN QFE PRESSURE IN HPA 841.1 840.9 839.8 839.8 838.7 835.2 833.4 835.8 837.8 843.1 842.4 843.4 839.3 MAX. QFE PRESSURE IN HPA 846.8 845.4 844.7 843.1 841.0 837.6 836.6 839.4 841.8 847.5 845.3 848.2 848.2 DAY 6 7 20 17 10 9 27 25 30 17 24 26 MIN. QFE PRESSURE IN HPA 835.7 835.5 831.6 836.3 834.0 832.2 828.8 832.6 834.4 838.1 839.4 838.0 828.8 DAY 14 3 12 13 29 14 10 12 3 3 7 4 MEAN QNH PRESSURE IN HPA 1019.4 1019.1 1017.8 1017.9 1016.6 1012.4 1010.4 1013.1 1015.5 1021.7 1020.8 1022.0 1017.2 MAX. QNH PRESSURE IN HPA 1026.0 1024.4 1023.6 1021.7 1019.2 1015.3 1014.1 1017.4 1020.2 1026.8 1024.3 1027.6 1027.6 DAY 6 7 20 17 10 9 27 25 30 17 24 26 MIN. QNH PRESSURE IN HPA 1013.0 1012.8 1008.2 1013.7 1011.1 1008.9 1005.0 1009.4 1011.5 1015.8 1017.4 1015.7 1005.0 DAY 14 3 12 13 29 14 10 12 3 3 7 4 MEAN QFF PRESSURE IN HPA 1020.2 1018.2 1015.1 1011.5 1006.4 998.9 995.4 998.7 1004.1 1014.3 1016.6 1020.6 1010.0 MAX. QFF PRESSURE IN HPA 1026.3 1027.1 1019.5 1016.5 1011.2 1002.8 1000.5 1005.9 1012.1 1020.4 1022.4 1026.0 1027.1 DAY 6 7 31 1 1 1 28 25 30 30 30 26 MIN. QFF PRESSURE IN HPA 1012.7 1009.5 1004.8 1007.2 998.1 994.9 989.6 995.4 997.8 1007.3 1011.6 1013.4 989.6 DAY 9 3 12 27 29 26 10 15 4 3 7 4 PRESSURE AT HOUR 1800 UTC. MEAN QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** PRESSURE AT HOUR 2100 UTC. MEAN QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ZARGHAN (40847) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 29 47 N LONGITUDE 52 43 E DATA PROCESSING CENTER ELEVATION 1596.0 M MEANS AND EXTREMES FOR THE YEAR 1994 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AIR TEMPERATURE (C) 7.7 8.9 11.9 18.1 22.8 29.6 32.9 31.8 24.4 19.3 12.4 5.6 18.8 MINIMUN AIR TEMPERATURE (C) -1.2 -2.0 3.6 7.8 11.6 14.7 19.9 18.7 12.1 8.1 4.8 -0.4 8.1 DAYS WITH MINIMUM TEMP. >=21 0 0 0 0 0 0 11 8 1 0 0 0 20 DAYS WITH MINIMUM TEMP. <=-4 8 5 0 0 0 0 0 0 0 0 0 6 19 DAYS WITH FREEZING MIN.<= 0 19 26 3 0 0 0 0 0 0 0 1 21 70 TEMPERATURE RECORDS LOWEST(C) -7.0 -6.6 -1.0 2.6 6.0 8.0 12.0 14.0 6.0 3.6 0.0 -5.6 -7.0 DAY 11 21 3 4 3 6 1 21 23 13 14 27 MAXIMUM AIR TEMPERATURE (C) 13.4 15.4 17.3 23.6 27.9 35.3 39.2 38.4 30.8 25.7 18.0 10.4 24.6 DAYS WITH MAXIMUM TEMP. >=30 0 0 0 0 10 30 31 31 17 0 0 0 119 DAYS WITH MAXIMUM TEMP. <= 0 0 0 0 0 0 0 0 0 0 0 0 0 0 TEMPERATURE RECORDS HIGHEST(C) 21.0 20.0 23.2 29.0 33.2 37.8 43.8 41.4 36.8 29.7 24.4 16.6 43.8 DAY 2 27 31 28 30 26 13 6 1 1 2 3 DIF. BETWEEN (MAX.-MIN.) (C) 14.6 17.4 13.7 15.8 16.3 20.6 19.3 19.7 18.7 17.6 13.2 10.8 16.5 MEAN DAILY TEMP. (MDT) (C) 6.1 6.7 10.4 15.7 19.8 25.0 29.6 28.5 21.4 16.9 11.4 5.0 16.4 COOLING DEG. DAYS(BASE 21 0C) 0.0 0.0 0.0 0.0 17.4 121.0 265.4 233.9 40.8 0.0 0.0 0.0 678.7 HEATING DEG. DAYS(BASE 18 0C) 368.7 316.6 234.6 76.9 11.9 0.0 0.0 0.0 3.9 42.9 198.5 404.0 1657.9 DEWPOINT (MEAN C) -3.7 -7.3 0.3 3.4 5.4 ***** ***** ***** ***** ***** ***** ***** ***** MIXING RATIO (G/KG) 3.60 2.80 4.92 6.00 6.88 ****** ****** ****** ****** ****** ****** ****** ****** VAPOUR PRESSURE (HPA) 4.84 3.76 6.59 8.04 9.18 ****** ****** ****** ****** ****** ****** ****** ****** SATURATION DEF. (HPA) 6.41 8.40 7.98 13.95 19.96 ****** ****** ****** ****** ****** ****** ****** ****** RELATIVE HUMIDITY (MEAN %) 50 36 51 42 37 *** *** *** *** *** *** *** *** RELATIVE HUMIDITY (MAX. %) 72 61 76 71 62 *** *** *** *** *** *** *** *** RELATIVE HUMIDITY (MIN. %) 32 19 33 26 23 *** *** *** *** *** *** *** *** RELATIVE HUMIDITY (MEAN% 03UTC) 70 59 75 71 61 *** *** *** *** *** *** *** *** RELATIVE HUMIDITY (MEAN% 09UTC) 41 25 44 31 28 *** *** *** *** *** *** *** *** RELATIVE HUMIDITY (MEAN% 15UTC) 44 30 41 33 31 *** *** *** *** *** *** *** *** RH=0 => RELATIVE HUMIDITY < 0.5% AMOUNT OF PRECIPITATION MM. 33.6 2.2 110.8 12.2 37.0 0.0 0.0 0.0 0.0 0.8 106.6 99.9 403.1 DAYS WITH PRECIPITATION >=10 1 0 4 0 1 0 0 0 0 0 4 4 14 DAYS WITH PRECIPITATION >= 5 1 0 7 1 2 0 0 0 0 0 5 5 21 DAYS WITH PRECIPITATION >= 1 3 1 8 3 6 0 0 0 0 0 8 9 38 DAYS WITH PRECIPITATION 5 4 8 4 6 0 0 0 0 1 9 10 47 GREATEST DAILY PRECIPITATION 29.0 1.0 42.0 9.0 27.0 0.0 0.0 0.0 0.0 0.8 44.0 26.0 44.0 DAY 24 25 12 2 6 ** ** ** ** 18 17 19 DAY WITH THUNDER STORM 0 0 0 0 0 0 0 0 0 0 2 0 2 DAYS WITH SNOW OR SLEET 0 0 0 0 0 0 0 0 0 0 0 0 0 DAYS WITH DUST 0 1 0 0 2 0 0 0 0 0 0 0 3 WIND DIRECTION (PREVAILING) 225 225 180 225 315 225 270 225 90 225 180 315 225 PREVAILING WIND SPEED(KNOTS) 6.0 8.3 8.8 6.0 4.8 5.5 5.1 5.1 4.5 6.2 6.2 5.3 6.6 PREVAILING WIND PERCENT 4.5 14.3 10.3 7.3 10.3 10.0 5.8 5.8 5.3 8.4 6.0 3.9 6.5 CALMS PERCENT OF WIND 82.6 62.1 65.2 78.7 65.8 69.3 78.1 78.7 80.7 80.0 80.7 89.7 76.1 NO. OF WIND OBSERVATION 155 140 155 150 155 150 155 155 150 155 150 155 1825 VECTOR WIND DIRECTION (MEAN) 196 222 189 263 258 238 255 261 190 243 222 263 230 VECTOR WIND MAGNITUDE(KNOTS) 0.4 1.9 1.3 0.6 1.2 0.6 0.4 0.1 0.3 0.7 0.5 0.3 0.6 WIND STEADINESES (MEAN %) 50.0 65.5 54.2 50.0 57.1 40.0 36.4 9.1 30.0 58.3 41.7 50.0 42.9 WIND SPEED (MEAN KNOTS) 0.8 2.9 2.4 1.2 2.1 1.5 1.1 1.1 1.0 1.2 1.2 0.6 1.4 FASTEST WIND DIRECTION 220 190 150 240 210 210 180 310 170 240 240 300 150 FASTEST WIND SPEED (KNOTS) 12 19 31 10 12 8 17 12 8 16 19 10 31 DAY 5 1 12 2 1 4 9 8 6 16 18 6 DAYS WITH SKY CLEAR (0-2)/8 18 23 18 15 20 28 27 29 25 22 11 20 256 DAYS WITH P.CLOUDY (3-6)/8 10 4 8 9 10 2 4 2 5 8 13 5 80 DAYS WITH CLOUDY (7-8)/8 3 1 5 6 1 0 0 0 0 1 6 6 29 DAYS WITH VISIBILITY =< 2 KM 1 0 0 0 0 0 0 0 1 0 0 2 4 DURATION OF SUNSHINE HOURS 228.3 244.2 237.6 261.2 316.5 348.9 330.8 334.4 288.1 260.6 190.7 191.2 3232.5 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ZARGHAN (40847) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 29 47 N LONGITUDE 52 43 E DATA PROCESSING CENTER ELEVATION 1596.0 M MEANS AND EXTREMES FOR THE YEAR 1994 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL MEAN QFE PRESSURE IN HPA 842.3 839.6 840.7 841.0 840.0 ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFE PRESSURE IN HPA 849.6 844.9 846.4 847.0 846.4 ****** ****** ****** ****** ****** ****** ****** ****** DAY-HOUR 28- 6 26- 6 31- 6 16- 3 15- 6 **-** **-** **-** **-** **-** **-** **-** MIN. QFE PRESSURE IN HPA 835.2 834.6 832.8 834.9 835.9 ****** ****** ****** ****** ****** ****** ****** ****** DAY-HOUR 25-12 13-12 12-15 3-12 23-15 **-** **-** **-** **-** **-** **-** **-** MEAN QNH PRESSURE IN HPA 1020.7 1017.5 1018.9 1019.3 1018.0 ****** ****** ****** ****** ****** ****** ****** ****** MAX. QNH PRESSURE IN HPA 1029.3 1023.8 1025.5 1026.2 1025.5 ****** ****** ****** ****** ****** ****** ****** ****** DAY-HOUR 28- 6 26- 6 31- 6 16- 3 15- 6 **-** **-** **-** **-** **-** **-** **-** MIN. QNH PRESSURE IN HPA 1012.5 1011.8 1009.6 1012.1 1013.3 ****** ****** ****** ****** ****** ****** ****** ****** DAY-HOUR 25-12 13-12 12-15 3-12 23-15 **-** **-** **-** **-** **-** **-** **-** 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 842.9 840.2 841.2 841.7 840.6 ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFE PRESSURE IN HPA 848.2 844.5 845.0 847.0 846.0 ****** ****** ****** ****** ****** ****** ****** ****** DAY 29 21 31 16 15 ** ** ** ** ** ** ** MIN. QFE PRESSURE IN HPA 836.8 835.4 834.5 836.8 837.5 ****** ****** ****** ****** ****** ****** ****** ****** DAY 25 13 12 3 3 ** ** ** ** ** ** ** MEAN QNH PRESSURE IN HPA 1021.5 1018.3 1019.5 1020.1 1018.7 ****** ****** ****** ****** ****** ****** ****** ****** MAX. QNH PRESSURE IN HPA 1027.6 1023.3 1023.9 1026.2 1025.1 ****** ****** ****** ****** ****** ****** ****** ****** DAY 29 21 31 16 15 ** ** ** ** ** ** ** MIN. QNH PRESSURE IN HPA 1014.3 1012.7 1011.6 1014.3 1015.1 ****** ****** ****** ****** ****** ****** ****** ****** DAY 25 13 12 3 3 ** ** ** ** ** ** ** MEAN QFF PRESSURE IN HPA 1021.0 1017.6 1016.1 1012.9 1008.4 ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA 1029.6 1025.3 1021.6 1019.0 1015.5 ****** ****** ****** ****** ****** ****** ****** ****** DAY 29 21 18 16 15 ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA 1013.8 1008.2 1007.9 1008.2 1004.2 ****** ****** ****** ****** ****** ****** ****** ****** DAY 16 13 12 3 25 ** ** ** ** ** ** ** ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ZARGHAN (40847) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 29 47 N LONGITUDE 52 43 E DATA PROCESSING CENTER ELEVATION 1596.0 M MEANS AND EXTREMES FOR THE YEAR 1994 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 0600 UTC. MEAN QFE PRESSURE IN HPA 843.9 841.3 842.1 842.5 841.2 ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFE PRESSURE IN HPA 849.6 844.9 846.4 846.5 846.4 ****** ****** ****** ****** ****** ****** ****** ****** DAY 28 26 31 16 15 ** ** ** ** ** ** ** MIN. QFE PRESSURE IN HPA 837.5 837.4 835.1 837.1 838.5 ****** ****** ****** ****** ****** ****** ****** ****** DAY 25 13 12 3 3 ** ** ** ** ** ** ** MEAN QNH PRESSURE IN HPA 1022.6 1019.6 1020.5 1021.0 1019.5 ****** ****** ****** ****** ****** ****** ****** ****** MAX. QNH PRESSURE IN HPA 1029.3 1023.8 1025.5 1025.7 1025.5 ****** ****** ****** ****** ****** ****** ****** ****** DAY 28 26 31 16 15 ** ** ** ** ** ** ** MIN. QNH PRESSURE IN HPA 1015.1 1015.0 1012.3 1014.7 1016.3 ****** ****** ****** ****** ****** ****** ****** ****** DAY 25 13 12 3 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 842.5 839.7 841.3 841.3 840.3 ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFE PRESSURE IN HPA 848.8 843.5 845.0 846.0 845.1 ****** ****** ****** ****** ****** ****** ****** ****** DAY 28 20 31 16 15 ** ** ** ** ** ** ** MIN. QFE PRESSURE IN HPA 836.4 835.0 833.9 836.4 837.5 ****** ****** ****** ****** ****** ****** ****** ****** DAY 25 13 12 3 1 ** ** ** ** ** ** ** MEAN QNH PRESSURE IN HPA 1021.0 1017.8 1019.6 1019.6 1018.4 ****** ****** ****** ****** ****** ****** ****** ****** MAX. QNH PRESSURE IN HPA 1028.3 1022.2 1023.9 1025.1 1024.0 ****** ****** ****** ****** ****** ****** ****** ****** DAY 28 20 31 16 15 ** ** ** ** ** ** ** MIN. QNH PRESSURE IN HPA 1013.9 1012.2 1010.9 1013.9 1015.1 ****** ****** ****** ****** ****** ****** ****** ****** DAY 25 13 12 3 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 841.0 838.1 839.4 839.8 838.9 ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFE PRESSURE IN HPA 847.1 841.5 843.3 845.8 844.8 ****** ****** ****** ****** ****** ****** ****** ****** DAY 28 20 31 16 15 ** ** ** ** ** ** ** MIN. QFE PRESSURE IN HPA 835.2 834.6 833.0 834.9 836.2 ****** ****** ****** ****** ****** ****** ****** ****** DAY 25 13 12 3 1 ** ** ** ** ** ** ** MEAN QNH PRESSURE IN HPA 1019.3 1015.8 1017.4 1017.9 1016.8 ****** ****** ****** ****** ****** ****** ****** ****** MAX. QNH PRESSURE IN HPA 1026.4 1019.8 1021.9 1024.8 1023.7 ****** ****** ****** ****** ****** ****** ****** ****** DAY 28 20 31 16 15 ** ** ** ** ** ** ** MIN. QNH PRESSURE IN HPA 1012.5 1011.8 1009.9 1012.1 1013.6 ****** ****** ****** ****** ****** ****** ****** ****** DAY 25 13 12 3 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 ZARGHAN (40847) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 29 47 N LONGITUDE 52 43 E DATA PROCESSING CENTER ELEVATION 1596.0 M MEANS AND EXTREMES FOR THE YEAR 1994 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 1500 UTC. MEAN QFE PRESSURE IN HPA 841.1 838.4 839.6 839.8 838.9 ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFE PRESSURE IN HPA 847.1 841.8 842.7 845.4 844.6 ****** ****** ****** ****** ****** ****** ****** ****** DAY 28 26 18 16 15 ** ** ** ** ** ** ** MIN. QFE PRESSURE IN HPA 835.4 835.2 832.8 835.2 835.9 ****** ****** ****** ****** ****** ****** ****** ****** DAY 25 13 12 3 23 ** ** ** ** ** ** ** MEAN QNH PRESSURE IN HPA 1019.4 1016.2 1017.6 1017.8 1016.8 ****** ****** ****** ****** ****** ****** ****** ****** MAX. QNH PRESSURE IN HPA 1026.4 1020.2 1021.2 1024.4 1023.4 ****** ****** ****** ****** ****** ****** ****** ****** DAY 28 26 18 16 15 ** ** ** ** ** ** ** MIN. QNH PRESSURE IN HPA 1012.7 1012.5 1009.6 1012.5 1013.3 ****** ****** ****** ****** ****** ****** ****** ****** DAY 25 13 12 3 23 ** ** ** ** ** ** ** MEAN QFF PRESSURE IN HPA 1018.8 1015.4 1014.0 1010.6 1006.4 ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA 1028.5 1020.3 1019.2 1017.9 1014.0 ****** ****** ****** ****** ****** ****** ****** ****** DAY 28 20 17 5 15 ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA 1012.4 1008.8 1004.0 1004.4 1000.8 ****** ****** ****** ****** ****** ****** ****** ****** DAY 16 13 12 30 31 ** ** ** ** ** ** ** PRESSURE AT HOUR 1800 UTC. MEAN QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** PRESSURE AT HOUR 2100 UTC. MEAN QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ZARGHAN (40847) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 29 47 N LONGITUDE 52 43 E DATA PROCESSING CENTER ELEVATION 1596.0 M MEANS AND EXTREMES FOR THE YEAR 1995 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AIR TEMPERATURE (C) 6.7 8.0 11.3 15.3 21.6 27.8 31.8 30.1 25.7 19.0 13.4 6.3 18.1 MINIMUN AIR TEMPERATURE (C) -0.9 0.9 3.1 6.0 9.6 13.9 17.9 16.1 12.6 7.1 1.8 0.1 7.3 DAYS WITH MINIMUM TEMP. >=21 0 0 0 0 0 0 4 1 0 0 0 0 5 DAYS WITH MINIMUM TEMP. <=-4 2 0 0 0 0 0 0 0 0 0 2 0 4 DAYS WITH FREEZING MIN.<= 0 25 14 7 0 0 0 0 0 0 0 8 19 73 TEMPERATURE RECORDS LOWEST(C) -5.2 -3.0 -1.4 2.0 2.8 10.0 12.8 12.6 8.0 0.4 -5.6 -3.8 -5.6 DAY 23 11 28 1 11 1 2 10 24 16 28 19 MAXIMUM AIR TEMPERATURE (C) 12.3 12.6 16.6 21.0 27.5 33.8 38.1 36.8 32.4 26.3 21.0 10.7 24.1 DAYS WITH MAXIMUM TEMP. >=30 0 0 0 0 0 25 31 31 27 2 0 0 116 DAYS WITH MAXIMUM TEMP. <= 0 0 0 0 0 0 0 0 0 0 0 0 0 0 TEMPERATURE RECORDS HIGHEST(C) 16.6 17.0 21.0 26.0 29.8 37.0 41.0 38.0 36.4 30.2 25.5 16.0 41.0 DAY 11 22 25 19 21 13 17 7 1 1 1 2 DIF. BETWEEN (MAX.-MIN.) (C) 13.2 11.7 13.5 15.0 17.9 19.9 20.2 20.7 19.8 19.2 19.2 10.6 16.8 MEAN DAILY TEMP. (MDT) (C) 5.7 6.8 9.8 13.5 18.5 23.8 28.0 26.4 22.5 16.7 11.4 5.4 15.7 COOLING DEG. DAYS(BASE 21 0C) 0.0 0.0 0.0 0.0 1.3 90.7 216.6 168.4 58.2 0.0 0.0 0.0 535.3 HEATING DEG. DAYS(BASE 18 0C) 380.8 314.7 253.2 134.8 15.0 0.0 0.0 0.0 0.0 54.3 198.5 389.4 1740.5 DEWPOINT (MEAN C) -0.6 0.3 1.4 5.7 6.5 7.8 5.8 1.4 2.3 0.9 -2.7 0.8 2.5 MIXING RATIO (G/KG) 4.47 4.84 5.26 7.01 7.40 8.20 7.23 5.28 5.46 5.12 3.89 4.90 5.75 VAPOUR PRESSURE (HPA) 6.02 6.48 7.05 9.36 9.89 10.87 9.56 7.03 7.30 6.87 5.23 6.58 7.69 SATURATION DEF. (HPA) 4.28 4.63 6.95 8.87 17.30 28.79 40.30 38.56 27.96 16.91 11.58 3.24 17.45 RELATIVE HUMIDITY (MEAN %) 64 62 56 57 41 31 23 19 25 36 37 70 43 RELATIVE HUMIDITY (MAX. %) 87 87 85 83 73 56 46 44 48 64 69 89 69 RELATIVE HUMIDITY (MIN. %) 44 44 37 40 25 21 13 9 14 21 19 55 29 RELATIVE HUMIDITY (MEAN% 03UTC) 85 86 84 83 73 56 46 44 48 65 69 88 69 RELATIVE HUMIDITY (MEAN% 09UTC) 56 53 46 48 30 23 14 10 16 25 24 60 34 RELATIVE HUMIDITY (MEAN% 15UTC) 60 55 46 49 36 27 18 14 19 31 32 71 38 RH=0 => RELATIVE HUMIDITY < 0.5% AMOUNT OF PRECIPITATION MM. 14.9 151.6 38.4 75.8 4.2 2.1 0.0 0.0 0.0 28.1 0.0 143.8 458.9 DAYS WITH PRECIPITATION >=10 0 4 3 2 0 0 0 0 0 1 0 4 14 DAYS WITH PRECIPITATION >= 5 0 6 4 5 0 0 0 0 0 2 0 5 22 DAYS WITH PRECIPITATION >= 1 4 7 4 8 1 1 0 0 0 2 0 5 32 DAYS WITH PRECIPITATION 9 8 6 10 3 1 0 0 0 3 0 6 46 GREATEST DAILY PRECIPITATION 4.1 51.0 12.2 32.0 4.0 2.1 0.0 0.0 0.0 19.0 0.0 54.0 54.0 DAY 22 6 14 24 30 3 ** ** ** 22 ** 6 DAY WITH THUNDER STORM 0 0 0 3 0 0 0 0 0 1 0 0 4 DAYS WITH SNOW OR SLEET 0 0 0 0 0 0 0 0 0 0 0 0 0 DAYS WITH DUST 0 1 0 0 1 0 0 0 0 0 0 0 2 WIND DIRECTION (PREVAILING) 315 315 225 315 315 225 225 45 225 315 315 225 315 PREVAILING WIND SPEED(KNOTS) 5.3 5.2 6.6 8.2 5.7 7.8 9.2 6.3 4.8 5.3 6.9 7.5 5.9 PREVAILING WIND PERCENT 5.2 7.1 6.5 6.7 7.7 9.3 8.4 5.2 5.3 5.8 5.3 2.6 5.0 CALMS PERCENT OF WIND 80.0 76.4 78.1 82.7 83.9 68.7 67.7 76.8 70.0 76.1 82.7 90.3 77.8 NO. OF WIND OBSERVATION 155 140 155 150 155 150 155 155 150 155 150 155 1825 VECTOR WIND DIRECTION (MEAN) 273 228 227 273 298 223 206 23 244 262 262 236 246 VECTOR WIND MAGNITUDE(KNOTS) 0.7 0.5 0.6 0.7 0.4 1.2 1.0 0.3 0.3 0.6 0.6 0.3 0.5 WIND STEADINESES (MEAN %) 53.8 35.7 50.0 53.8 40.0 54.5 43.5 21.4 20.0 46.2 54.5 50.0 35.7 WIND SPEED (MEAN KNOTS) 1.3 1.4 1.2 1.3 1.0 2.2 2.3 1.4 1.5 1.3 1.1 0.6 1.4 FASTEST WIND DIRECTION 270 240 240 160 200 210 250 80 200 250 300 240 80 FASTEST WIND SPEED (KNOTS) 19 23 14 19 19 25 14 39 12 16 17 25 39 DAY 19 8 16 12 26 7 5 6 21 17 26 17 DAYS WITH SKY CLEAR (0-2)/8 19 17 17 11 20 28 30 29 27 27 27 15 267 DAYS WITH P.CLOUDY (3-6)/8 8 4 8 12 9 2 1 2 3 3 2 8 62 DAYS WITH CLOUDY (7-8)/8 4 7 6 7 2 0 0 0 0 1 1 8 36 DAYS WITH VISIBILITY =< 2 KM 3 0 0 0 0 0 0 0 0 1 0 1 5 DURATION OF SUNSHINE HOURS 198.0 195.9 226.3 226.7 323.5 357.4 353.2 354.4 307.0 293.0 276.2 175.3 3286.9 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ZARGHAN (40847) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 29 47 N LONGITUDE 52 43 E DATA PROCESSING CENTER ELEVATION 1596.0 M MEANS AND EXTREMES FOR THE YEAR 1995 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL MEAN QFE PRESSURE IN HPA 843.9 840.7 840.2 840.5 840.7 836.3 832.5 836.1 839.3 842.8 843.3 843.1 839.9 MAX. QFE PRESSURE IN HPA 848.6 845.4 846.5 846.2 845.6 842.2 836.5 840.4 844.6 848.7 848.6 847.2 848.7 DAY-HOUR 7- 6 2- 6 3- 6 4- 6 27- 6 3- 3 4- 6 25- 6 13- 6 25- 6 15- 6 19- 6 MIN. QFE PRESSURE IN HPA 839.3 834.2 833.7 835.3 834.7 832.4 827.2 831.2 833.7 837.5 836.7 838.2 827.2 DAY-HOUR 9-12 23-15 14-12 24-12 15-15 24-15 16-15 3-15 4-15 20-12 6-12 25-12 MEAN QNH PRESSURE IN HPA 1022.6 1018.9 1018.3 1018.6 1018.8 1013.8 1009.3 1013.5 1017.2 1021.4 1021.9 1021.7 1018.0 MAX. QNH PRESSURE IN HPA 1028.1 1024.4 1025.7 1025.3 1024.6 1020.6 1014.0 1018.5 1023.4 1028.2 1028.1 1026.5 1028.2 DAY-HOUR 7- 6 2- 6 3- 6 4- 6 27- 6 3- 3 4- 6 25- 6 13- 6 25- 6 15- 6 19- 6 MIN. QNH PRESSURE IN HPA 1017.2 1011.3 1010.7 1012.6 1011.9 1009.2 1003.1 1007.8 1010.7 1015.1 1014.2 1016.0 1003.1 DAY-HOUR 9-12 23-15 14-12 24-12 15-15 24-15 16-15 3-15 4-15 20-12 6-12 25-12 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 843.9 841.0 840.4 840.8 841.3 837.2 833.4 837.1 840.1 843.6 843.9 843.4 840.5 MAX. QFE PRESSURE IN HPA 846.8 844.5 844.9 845.9 845.1 842.2 836.5 839.7 843.5 848.1 847.3 845.7 848.1 DAY 7 2 3 4 27 3 29 25 13 27 15 19 MIN. QFE PRESSURE IN HPA 841.2 836.4 835.2 836.4 836.7 833.8 830.0 833.8 836.4 839.8 839.3 838.9 830.0 DAY 22 24 14 25 15 18 20 9 5 15 26 25 MEAN QNH PRESSURE IN HPA 1022.6 1019.2 1018.5 1019.0 1019.6 1014.8 1010.3 1014.7 1018.2 1022.3 1022.6 1022.0 1018.7 MAX. QNH PRESSURE IN HPA 1026.0 1023.3 1023.8 1025.0 1024.0 1020.6 1014.0 1017.7 1022.2 1027.5 1026.6 1024.7 1027.5 DAY 7 2 3 4 27 3 29 25 13 27 15 19 MIN. QNH PRESSURE IN HPA 1019.5 1013.9 1012.5 1013.9 1014.2 1010.8 1006.4 1010.8 1013.9 1017.8 1017.2 1016.8 1006.4 DAY 22 24 14 25 15 18 20 9 5 15 26 25 MEAN QFF PRESSURE IN HPA 1023.1 1018.1 1015.5 1013.4 1010.5 1002.1 995.2 1000.8 1007.1 1015.8 1019.8 1022.3 1012.0 MAX. QFF PRESSURE IN HPA 1027.5 1023.4 1022.6 1018.6 1014.6 1011.5 999.9 1004.3 1011.2 1022.6 1025.7 1027.5 1027.5 DAY 15 2 3 13 26 3 4 25 21 25 30 19 MIN. QFF PRESSURE IN HPA 1018.0 1011.6 1008.6 1008.5 1006.4 997.0 989.2 996.2 1001.5 1011.3 1014.3 1014.3 989.2 DAY 22 23 14 15 15 22 20 9 5 20 7 4 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ZARGHAN (40847) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 29 47 N LONGITUDE 52 43 E DATA PROCESSING CENTER ELEVATION 1596.0 M MEANS AND EXTREMES FOR THE YEAR 1995 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 0600 UTC. MEAN QFE PRESSURE IN HPA 845.4 842.1 841.5 841.6 841.8 837.5 833.6 837.6 840.9 844.4 844.9 844.4 841.3 MAX. QFE PRESSURE IN HPA 848.6 845.4 846.5 846.2 845.6 842.1 836.5 840.4 844.6 848.7 848.6 847.2 848.7 DAY 7 2 3 4 27 1 4 25 13 25 15 19 MIN. QFE PRESSURE IN HPA 841.9 838.0 835.7 837.4 836.9 834.6 830.2 834.0 837.2 840.2 840.2 840.3 830.2 DAY 1 24 14 25 15 18 17 3 5 15 6 25 MEAN QNH PRESSURE IN HPA 1024.3 1020.5 1019.8 1020.0 1020.1 1015.1 1010.6 1015.3 1019.1 1023.2 1023.8 1023.2 1019.6 MAX. QNH PRESSURE IN HPA 1028.1 1024.4 1025.7 1025.3 1024.6 1020.5 1014.0 1018.5 1023.4 1028.2 1028.1 1026.5 1028.2 DAY 7 2 3 4 27 1 4 25 13 25 15 19 MIN. QNH PRESSURE IN HPA 1020.3 1015.7 1013.0 1015.0 1014.4 1011.8 1006.6 1011.1 1014.8 1018.3 1018.3 1018.4 1006.6 DAY 1 24 14 25 15 18 17 3 5 15 6 25 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** PRESSURE AT HOUR 0900 UTC. MEAN QFE PRESSURE IN HPA 844.3 841.1 840.7 840.9 841.0 836.6 833.0 836.6 839.7 843.0 843.4 843.4 840.3 MAX. QFE PRESSURE IN HPA 847.3 844.1 845.3 845.2 844.3 842.1 836.1 839.4 843.2 847.1 847.1 846.5 847.3 DAY 7 1 3 4 27 1 4 25 13 25 15 19 MIN. QFE PRESSURE IN HPA 841.0 837.1 835.1 837.0 836.6 833.8 829.7 833.2 836.2 839.2 838.5 839.4 829.7 DAY 9 23 14 25 15 18 17 3 5 15 6 25 MEAN QNH PRESSURE IN HPA 1023.1 1019.4 1018.9 1019.1 1019.2 1014.1 1009.8 1014.0 1017.7 1021.6 1022.1 1022.0 1018.4 MAX. QNH PRESSURE IN HPA 1026.6 1022.9 1024.3 1024.1 1023.1 1020.5 1013.5 1017.4 1021.8 1026.4 1026.4 1025.7 1026.6 DAY 7 1 3 4 27 1 4 25 13 25 15 19 MIN. QNH PRESSURE IN HPA 1019.2 1014.7 1012.3 1014.6 1014.1 1010.8 1006.0 1010.1 1013.6 1017.1 1016.3 1017.4 1006.0 DAY 9 23 14 25 15 18 17 3 5 15 6 25 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** PRESSURE AT HOUR 1200 UTC. MEAN QFE PRESSURE IN HPA 842.7 839.5 839.1 839.5 839.8 835.4 831.7 834.9 838.0 841.4 842.0 841.9 838.8 MAX. QFE PRESSURE IN HPA 845.9 842.6 843.2 844.5 842.8 840.5 834.8 837.3 841.4 845.5 845.3 844.6 845.9 DAY 7 1 3 12 3 2 4 25 13 24 15 19 MIN. QFE PRESSURE IN HPA 839.3 834.6 833.7 835.3 835.6 832.8 828.1 831.7 834.4 837.5 836.7 838.2 828.1 DAY 9 23 14 24 15 17 20 3 5 20 6 25 MEAN QNH PRESSURE IN HPA 1021.2 1017.5 1017.0 1017.5 1017.8 1012.6 1008.3 1012.1 1015.7 1019.7 1020.4 1020.3 1016.7 MAX. QNH PRESSURE IN HPA 1025.0 1021.1 1021.8 1023.3 1021.3 1018.6 1012.0 1014.9 1019.7 1024.5 1024.3 1023.4 1025.0 DAY 7 1 3 12 3 2 4 25 13 24 15 19 MIN. QNH PRESSURE IN HPA 1017.2 1011.8 1010.7 1012.6 1012.9 1009.6 1004.2 1008.4 1011.5 1015.1 1014.2 1016.0 1004.2 DAY 9 23 14 24 15 17 20 3 5 20 6 25 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ZARGHAN (40847) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 29 47 N LONGITUDE 52 43 E DATA PROCESSING CENTER ELEVATION 1596.0 M MEANS AND EXTREMES FOR THE YEAR 1995 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 1500 UTC. MEAN QFE PRESSURE IN HPA 843.1 839.9 839.2 839.5 839.6 835.0 831.1 834.6 837.9 841.7 842.4 842.3 838.9 MAX. QFE PRESSURE IN HPA 846.1 843.0 843.2 844.3 843.1 841.2 834.5 836.8 841.1 846.5 845.5 845.0 846.5 DAY 19 1 3 12 26 2 7 25 12 24 15 19 MIN. QFE PRESSURE IN HPA 840.0 834.2 834.1 835.3 834.7 832.4 827.2 831.2 833.7 837.8 837.3 838.9 827.2 DAY 9 23 14 24 15 24 16 3 4 15 6 25 MEAN QNH PRESSURE IN HPA 1021.7 1017.9 1017.2 1017.5 1017.6 1012.2 1007.7 1011.7 1015.6 1020.0 1020.9 1020.8 1016.7 MAX. QNH PRESSURE IN HPA 1025.2 1021.6 1021.8 1023.1 1021.7 1019.5 1011.6 1014.3 1019.3 1025.7 1024.5 1023.9 1025.7 DAY 19 1 3 12 26 2 7 25 12 24 15 19 MIN. QNH PRESSURE IN HPA 1018.1 1011.3 1011.2 1012.6 1011.9 1009.2 1003.1 1007.8 1010.7 1015.5 1014.9 1016.8 1003.1 DAY 9 23 14 24 15 24 16 3 4 15 6 25 MEAN QFF PRESSURE IN HPA 1021.8 1016.7 1014.1 1011.7 1008.4 999.3 992.5 997.9 1004.5 1013.5 1018.1 1020.9 1009.9 MAX. QFF PRESSURE IN HPA 1026.2 1020.5 1020.2 1017.0 1012.5 1010.0 997.5 1000.9 1008.3 1021.6 1024.8 1025.6 1026.2 DAY 15 14 3 12 26 2 7 25 21 24 30 19 MIN. QFF PRESSURE IN HPA 1017.6 1008.9 1007.3 1007.6 1003.7 995.2 986.8 993.4 998.6 1008.8 1010.6 1014.9 986.8 DAY 9 23 14 24 15 30 20 8 4 4 6 6 PRESSURE AT HOUR 1800 UTC. MEAN QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** PRESSURE AT HOUR 2100 UTC. MEAN QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ZARGHAN (40847) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 29 47 N LONGITUDE 52 43 E DATA PROCESSING CENTER ELEVATION 1596.0 M MEANS AND EXTREMES FOR THE YEAR 1996 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AIR TEMPERATURE (C) 3.0 8.8 11.2 17.0 23.4 28.8 29.4 28.9 26.2 18.8 12.7 8.9 18.1 MINIMUN AIR TEMPERATURE (C) -2.1 1.7 4.1 7.3 11.6 14.7 17.4 16.5 12.6 5.8 1.8 -1.0 7.5 DAYS WITH MINIMUM TEMP. >=21 0 0 0 0 0 0 2 2 0 0 0 0 4 DAYS WITH MINIMUM TEMP. <=-4 9 0 0 0 0 0 0 0 0 0 0 2 11 DAYS WITH FREEZING MIN.<= 0 24 13 2 0 0 0 0 0 0 1 5 26 71 TEMPERATURE RECORDS LOWEST(C) -9.2 -3.2 0.0 2.0 7.0 10.5 13.5 11.6 8.2 -0.1 -2.0 -4.4 -9.2 DAY 16 14 15 5 1 8 17 5 20 26 13 4 MAXIMUM AIR TEMPERATURE (C) 6.8 13.7 16.4 22.4 29.2 34.9 34.9 35.3 33.5 26.3 19.8 15.9 24.1 DAYS WITH MAXIMUM TEMP. >=30 0 0 0 0 9 30 30 31 28 2 0 0 130 DAYS WITH MAXIMUM TEMP. <= 0 4 0 0 0 0 0 0 0 0 0 0 0 4 TEMPERATURE RECORDS HIGHEST(C) 14.8 20.6 20.0 25.5 34.6 36.2 37.4 36.5 36.7 32.0 26.2 18.0 37.4 DAY 31 10 19 27 31 4 11 23 11 1 1 29 DIF. BETWEEN (MAX.-MIN.) (C) 8.9 12.0 12.3 15.1 17.6 20.2 17.5 18.8 20.9 20.5 18.0 16.9 16.6 MEAN DAILY TEMP. (MDT) (C) 2.4 7.7 10.2 14.9 20.4 24.8 26.2 25.9 23.0 16.1 10.8 7.4 15.8 COOLING DEG. DAYS(BASE 21 0C) 0.0 0.0 0.0 0.0 19.3 113.6 160.3 151.6 66.7 0.5 0.0 0.0 512.2 HEATING DEG. DAYS(BASE 18 0C) 485.0 298.2 240.3 96.9 3.0 0.0 0.0 0.0 0.0 72.9 216.1 327.3 1739.7 DEWPOINT (MEAN C) -1.3 0.4 2.4 4.6 5.7 5.1 7.2 7.4 2.2 -0.3 -2.1 -2.8 2.4 MIXING RATIO (G/KG) 4.30 4.87 5.66 6.59 6.97 6.75 7.80 7.92 5.47 4.62 4.04 3.78 5.73 VAPOUR PRESSURE (HPA) 5.77 6.53 7.55 8.81 9.31 8.98 10.35 10.51 7.31 6.22 5.44 5.10 7.66 SATURATION DEF. (HPA) 2.19 5.22 6.21 11.58 21.02 32.65 32.49 31.31 29.27 17.32 10.31 7.02 17.22 RELATIVE HUMIDITY (MEAN %) 76 60 59 49 36 25 27 29 24 32 41 48 42 RELATIVE HUMIDITY (MAX. %) 90 82 83 77 65 48 48 52 46 58 66 74 66 RELATIVE HUMIDITY (MIN. %) 62 43 40 33 20 16 19 18 13 18 26 29 28 RELATIVE HUMIDITY (MEAN% 03UTC) 88 80 82 76 65 48 48 52 46 58 66 73 65 RELATIVE HUMIDITY (MEAN% 09UTC) 69 51 52 38 25 18 20 21 15 22 30 37 33 RELATIVE HUMIDITY (MEAN% 15UTC) 77 55 54 42 30 20 23 24 21 29 38 43 38 RH=0 => RELATIVE HUMIDITY < 0.5% AMOUNT OF PRECIPITATION MM. 134.0 71.2 129.1 48.7 0.0 1.2 0.0 1.0 0.0 3.0 3.2 6.0 397.4 DAYS WITH PRECIPITATION >=10 4 3 6 2 0 0 0 0 0 0 0 0 15 DAYS WITH PRECIPITATION >= 5 8 5 8 2 0 0 0 0 0 0 0 0 23 DAYS WITH PRECIPITATION >= 1 9 8 13 3 0 1 0 1 0 2 2 2 41 DAYS WITH PRECIPITATION 9 10 14 6 2 2 2 2 0 2 3 2 54 GREATEST DAILY PRECIPITATION 57.0 22.0 23.0 32.0 0.0 1.0 0.0 1.0 0.0 2.0 2.0 3.0 57.0 DAY 12 5 24 14 ** 15 ** 27 ** 17 24 15 DAY WITH THUNDER STORM 0 0 1 0 0 0 1 1 0 0 0 1 4 DAYS WITH SNOW OR SLEET 3 0 0 0 0 0 0 0 0 0 0 0 3 DAYS WITH DUST 0 0 0 0 5 2 3 2 6 2 0 0 20 WIND DIRECTION (PREVAILING) 270 225 225 225 315 225 45 315 315 225 360 315 315 PREVAILING WIND SPEED(KNOTS) 6.3 12.6 10.5 11.0 10.4 11.0 8.1 8.5 9.9 10.1 4.9 7.3 8.7 PREVAILING WIND PERCENT 7.7 9.7 14.2 7.3 8.4 9.3 11.0 8.4 6.0 5.8 6.0 5.2 5.8 CALMS PERCENT OF WIND 80.0 66.2 59.4 66.0 63.2 57.3 61.9 70.3 73.3 69.7 78.7 80.6 68.9 NO. OF WIND OBSERVATION 155 145 155 150 155 150 155 155 150 155 150 155 1830 VECTOR WIND DIRECTION (MEAN) 293 240 232 266 283 234 36 260 293 249 197 285 258 VECTOR WIND MAGNITUDE(KNOTS) 0.9 1.8 2.4 1.4 1.7 1.8 1.2 0.5 0.8 1.0 0.6 0.3 0.9 WIND STEADINESES (MEAN %) 69.2 58.1 60.0 50.0 43.6 42.9 34.3 20.8 30.8 38.5 33.3 21.4 32.1 WIND SPEED (MEAN KNOTS) 1.3 3.1 4.0 2.8 3.9 4.2 3.5 2.4 2.6 2.6 1.8 1.4 2.8 FASTEST WIND DIRECTION 290 180 240 220 250 240 310 300 240 210 220 120 180 FASTEST WIND SPEED (KNOTS) 14 39 39 27 39 35 23 33 29 29 29 16 39 DAY 17 11 13 3 11 2 10 26 19 9 9 14 DAYS WITH SKY CLEAR (0-2)/8 15 13 12 15 18 28 25 25 30 28 19 24 252 DAYS WITH P.CLOUDY (3-6)/8 9 10 14 8 10 2 5 6 0 3 7 7 81 DAYS WITH CLOUDY (7-8)/8 7 6 5 7 3 0 1 0 0 0 4 0 33 DAYS WITH VISIBILITY =< 2 KM 6 2 0 0 0 0 0 0 2 1 0 0 11 DURATION OF SUNSHINE HOURS 170.4 200.3 226.7 272.4 310.1 349.4 331.7 331.0 315.7 298.6 239.5 262.6 3308.4 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ZARGHAN (40847) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 29 47 N LONGITUDE 52 43 E DATA PROCESSING CENTER ELEVATION 1596.0 M MEANS AND EXTREMES FOR THE YEAR 1996 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL MEAN QFE PRESSURE IN HPA 842.1 840.7 838.6 840.7 840.3 836.4 836.0 837.1 838.8 843.2 844.2 844.9 840.3 MAX. QFE PRESSURE IN HPA 848.0 847.5 843.7 845.9 844.7 841.6 842.2 842.1 846.1 848.0 851.1 850.4 851.1 DAY-HOUR 28- 6 8- 6 29- 6 8- 6 7- 6 1- 6 3- 6 30- 6 25- 6 13- 6 19- 6 8- 6 MIN. QFE PRESSURE IN HPA 831.0 832.6 833.9 835.7 836.3 832.2 830.9 832.7 833.0 836.4 839.0 840.7 830.9 DAY-HOUR 12- 3 5- 3 17-12 4-12 28-15 18-15 12-15 7-15 20-12 5-12 29-12 15-12 MEAN QNH PRESSURE IN HPA 1020.5 1018.9 1016.4 1018.9 1018.4 1013.9 1013.4 1014.7 1016.6 1021.8 1023.0 1023.8 1018.4 MAX. QNH PRESSURE IN HPA 1027.4 1026.8 1022.4 1025.0 1023.6 1019.9 1020.6 1020.5 1025.2 1027.4 1031.0 1030.2 1031.0 DAY-HOUR 28- 6 8- 6 29- 6 8- 6 7- 6 1- 6 3- 6 30- 6 25- 6 13- 6 19- 6 8- 6 MIN. QNH PRESSURE IN HPA 1007.5 1009.4 1010.9 1013.0 1013.7 1008.9 1007.4 1009.5 1009.9 1013.9 1016.9 1018.9 1007.4 DAY-HOUR 12- 3 5- 3 17-12 4-12 28-15 18-15 12-15 7-15 20-12 5-12 29-12 15-12 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY-HOUR **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY-HOUR **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** PRESSURE AT HOUR 0000 UTC. MEAN QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** PRESSURE AT HOUR 0300 UTC. MEAN QFE PRESSURE IN HPA 842.1 840.9 838.9 841.2 840.9 837.4 837.1 838.1 839.6 844.0 844.9 845.5 840.9 MAX. QFE PRESSURE IN HPA 847.0 846.0 842.7 844.9 844.0 841.2 841.5 841.8 844.4 847.0 850.1 849.0 850.1 DAY 27 8 29 14 17 3 4 30 26 13 19 28 MIN. QFE PRESSURE IN HPA 831.0 832.6 835.3 838.3 837.7 833.3 833.3 835.7 835.6 838.5 840.3 842.3 831.0 DAY 12 5 17 6 30 20 12 8 20 5 29 15 MEAN QNH PRESSURE IN HPA 1020.5 1019.1 1016.8 1019.4 1019.1 1015.0 1014.7 1015.9 1017.6 1022.7 1023.7 1024.5 1019.1 MAX. QNH PRESSURE IN HPA 1026.2 1025.1 1021.2 1023.8 1022.7 1019.5 1019.8 1020.2 1023.2 1026.2 1029.9 1028.6 1029.9 DAY 27 8 29 14 17 3 4 30 26 13 19 28 MIN. QNH PRESSURE IN HPA 1007.5 1009.4 1012.6 1016.1 1015.4 1010.2 1010.2 1013.0 1012.9 1016.3 1018.4 1020.8 1007.5 DAY 12 5 17 6 30 20 12 8 20 5 29 15 MEAN QFF PRESSURE IN HPA 1022.9 1017.5 1013.7 1012.9 1008.9 1001.7 1000.6 1002.4 1006.6 1016.6 1021.1 1024.1 1012.4 MAX. QFF PRESSURE IN HPA 1031.7 1024.7 1020.4 1019.1 1013.8 1006.8 1005.9 1007.4 1013.6 1022.6 1028.3 1028.6 1031.7 DAY 27 24 1 14 7 3 3 30 25 20 16 4 MIN. QFF PRESSURE IN HPA 1009.0 1006.8 1009.3 1008.2 1003.5 997.4 995.7 998.8 1003.1 1006.2 1015.4 1015.5 995.7 DAY 12 5 8 10 29 20 12 8 5 5 28 15 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ZARGHAN (40847) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 29 47 N LONGITUDE 52 43 E DATA PROCESSING CENTER ELEVATION 1596.0 M MEANS AND EXTREMES FOR THE YEAR 1996 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 0600 UTC. MEAN QFE PRESSURE IN HPA 843.4 842.2 839.7 841.9 841.5 837.7 837.4 838.6 840.4 844.8 845.8 846.6 841.7 MAX. QFE PRESSURE IN HPA 848.0 847.5 843.7 845.9 844.7 841.6 842.2 842.1 846.1 848.0 851.1 850.4 851.1 DAY 28 8 29 8 7 1 3 30 25 13 19 8 MIN. QFE PRESSURE IN HPA 831.5 833.5 835.7 838.9 838.5 834.1 833.3 835.7 836.3 839.0 841.4 842.3 831.5 DAY 12 5 17 4 29 20 12 8 20 5 29 15 MEAN QNH PRESSURE IN HPA 1022.0 1020.6 1017.7 1020.3 1019.8 1015.4 1015.0 1016.5 1018.5 1023.7 1024.9 1025.7 1020.0 MAX. QNH PRESSURE IN HPA 1027.4 1026.8 1022.4 1025.0 1023.6 1019.9 1020.6 1020.5 1025.2 1027.4 1031.0 1030.2 1031.0 DAY 28 8 29 8 7 1 3 30 25 13 19 8 MIN. QNH PRESSURE IN HPA 1008.1 1010.5 1013.0 1016.8 1016.3 1011.2 1010.2 1013.0 1013.7 1016.9 1019.7 1020.8 1008.1 DAY 12 5 17 4 29 20 12 8 20 5 29 15 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** PRESSURE AT HOUR 0900 UTC. MEAN QFE PRESSURE IN HPA 842.3 841.1 839.0 841.1 840.6 836.8 836.5 837.5 839.2 843.4 844.4 845.1 840.6 MAX. QFE PRESSURE IN HPA 847.0 846.0 843.0 844.8 843.8 840.8 841.7 841.1 844.6 846.7 849.7 848.4 849.7 DAY 28 8 1 8 17 1 3 30 25 13 18 28 MIN. QFE PRESSURE IN HPA 831.4 834.1 835.1 838.1 837.8 833.6 832.5 835.0 834.5 838.0 839.7 841.4 831.4 DAY 12 5 17 4 29 19 12 8 20 5 28 15 MEAN QNH PRESSURE IN HPA 1020.8 1019.3 1016.9 1019.4 1018.8 1014.3 1013.9 1015.2 1017.1 1022.0 1023.2 1024.1 1018.8 MAX. QNH PRESSURE IN HPA 1026.2 1025.1 1021.6 1023.7 1022.5 1019.0 1020.1 1019.3 1023.4 1025.9 1029.4 1027.9 1029.4 DAY 28 8 1 8 17 1 3 30 25 13 18 28 MIN. QNH PRESSURE IN HPA 1008.0 1011.2 1012.3 1015.8 1015.5 1010.6 1009.3 1012.2 1011.6 1015.7 1017.7 1019.7 1008.0 DAY 12 5 17 4 29 19 12 8 20 5 28 15 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** PRESSURE AT HOUR 1200 UTC. MEAN QFE PRESSURE IN HPA 841.1 839.6 837.5 839.6 839.2 835.3 834.8 835.8 837.4 841.8 842.9 843.6 839.0 MAX. QFE PRESSURE IN HPA 845.5 845.0 841.2 843.3 842.5 839.2 840.5 838.9 842.8 846.2 847.8 847.2 847.8 DAY 28 8 29 21 17 1 3 30 25 17 15 8 MIN. QFE PRESSURE IN HPA 831.0 834.5 833.9 835.7 836.6 832.4 831.2 833.4 833.0 836.4 839.0 840.7 831.0 DAY 12 5 17 4 28 19 12 7 20 5 29 15 MEAN QNH PRESSURE IN HPA 1019.4 1017.6 1015.1 1017.5 1017.2 1012.5 1012.0 1013.2 1015.0 1020.1 1021.5 1022.3 1016.9 MAX. QNH PRESSURE IN HPA 1024.5 1023.9 1019.5 1021.9 1021.0 1017.1 1018.6 1016.8 1021.3 1025.3 1027.2 1026.5 1027.2 DAY 28 8 29 21 17 1 3 30 25 17 15 8 MIN. QNH PRESSURE IN HPA 1007.5 1011.6 1010.9 1013.0 1014.1 1009.2 1007.8 1010.4 1009.9 1013.9 1016.9 1018.9 1007.5 DAY 12 5 17 4 28 19 12 7 20 5 29 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 ZARGHAN (40847) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 29 47 N LONGITUDE 52 43 E DATA PROCESSING CENTER ELEVATION 1596.0 M MEANS AND EXTREMES FOR THE YEAR 1996 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 1500 UTC. MEAN QFE PRESSURE IN HPA 841.6 839.9 838.0 839.7 839.1 835.0 834.5 835.6 837.4 842.0 843.2 844.0 839.2 MAX. QFE PRESSURE IN HPA 846.1 845.3 841.0 843.4 842.4 839.2 839.7 838.9 842.8 845.0 848.7 847.2 848.7 DAY 26 8 1 8 11 1 3 30 25 17 15 8 MIN. QFE PRESSURE IN HPA 831.5 832.8 834.1 835.7 836.3 832.2 830.9 832.7 833.5 836.4 839.4 840.8 830.9 DAY 12 16 16 4 28 18 12 7 21 5 29 15 MEAN QNH PRESSURE IN HPA 1019.9 1017.9 1015.7 1017.8 1017.0 1012.2 1011.6 1012.9 1015.0 1020.4 1021.8 1022.7 1017.1 MAX. QNH PRESSURE IN HPA 1025.2 1024.3 1019.2 1022.0 1020.9 1017.1 1017.7 1016.8 1021.3 1023.9 1028.2 1026.5 1028.2 DAY 26 8 1 8 11 1 3 30 25 17 15 8 MIN. QNH PRESSURE IN HPA 1008.1 1009.6 1011.2 1013.0 1013.7 1008.9 1007.4 1009.5 1010.5 1013.9 1017.4 1019.0 1007.4 DAY 12 16 16 4 28 18 12 7 21 5 29 15 MEAN QFF PRESSURE IN HPA 1022.0 1016.2 1012.3 1011.1 1006.6 998.8 997.4 999.3 1003.9 1014.2 1019.2 1022.2 1010.3 MAX. QFF PRESSURE IN HPA 1029.9 1022.2 1018.1 1016.9 1013.2 1004.6 1003.5 1004.2 1011.4 1020.4 1026.7 1026.3 1029.9 DAY 26 18 28 14 11 1 3 30 25 20 15 8 MIN. QFF PRESSURE IN HPA 1010.1 1007.8 1007.9 1006.4 1000.7 995.5 992.5 995.9 1000.0 1003.9 1013.7 1016.3 992.5 DAY 12 16 7 10 28 20 12 7 5 5 28 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 ZARGHAN (40847) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 29 47 N LONGITUDE 52 43 E DATA PROCESSING CENTER ELEVATION 1596.0 M MEANS AND EXTREMES FOR THE YEAR 1997 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AIR TEMPERATURE (C) 5.8 8.0 9.6 15.5 21.5 27.5 32.4 30.7 26.0 20.3 10.5 6.6 17.9 MINIMUN AIR TEMPERATURE (C) -2.3 -1.9 1.7 6.5 9.4 14.8 19.3 17.1 12.1 9.2 2.8 0.3 7.4 DAYS WITH MINIMUM TEMP. >=21 0 0 0 0 0 0 10 0 0 0 0 0 10 DAYS WITH MINIMUM TEMP. <=-4 8 12 1 0 0 0 0 0 0 0 0 0 21 DAYS WITH FREEZING MIN.<= 0 26 22 15 1 0 0 0 0 0 0 4 19 87 TEMPERATURE RECORDS LOWEST(C) -5.8 -8.4 -5.5 0.0 4.4 9.4 13.5 11.0 8.6 2.6 -2.0 -2.8 -8.4 DAY 4 8 1 12 6 5 4 30 15 28 25 28 MAXIMUM AIR TEMPERATURE (C) 11.5 14.3 14.9 20.8 27.5 33.7 38.9 37.6 33.1 27.1 15.7 11.4 23.9 DAYS WITH MAXIMUM TEMP. >=30 0 0 0 0 6 29 31 31 30 9 0 0 136 DAYS WITH MAXIMUM TEMP. <= 0 0 0 0 0 0 0 0 0 0 0 0 0 0 TEMPERATURE RECORDS HIGHEST(C) 17.0 21.0 19.8 26.2 32.5 36.8 41.0 40.5 35.6 31.2 21.0 15.4 41.0 DAY 12 21 3 27 28 16 21 1 6 5 1 9 DIF. BETWEEN (MAX.-MIN.) (C) 13.8 16.2 13.2 14.3 18.1 18.9 19.6 20.5 21.0 17.9 12.9 11.1 16.5 MEAN DAILY TEMP. (MDT) (C) 4.6 6.2 8.3 13.7 18.4 24.2 29.1 27.4 22.6 18.1 9.3 5.8 15.6 COOLING DEG. DAYS(BASE 21 0C) 0.0 0.0 0.0 0.0 4.9 97.7 250.5 197.8 50.1 2.5 0.0 0.0 603.6 HEATING DEG. DAYS(BASE 18 0C) 414.6 330.0 300.9 129.6 24.4 0.0 0.0 0.0 0.0 32.3 261.2 377.0 1870.1 DEWPOINT (MEAN C) -3.2 -6.9 -0.7 3.7 3.8 5.9 7.6 5.9 5.7 4.9 3.4 1.2 2.6 MIXING RATIO (G/KG) 3.67 2.99 4.59 6.27 6.09 7.18 8.04 7.13 6.99 6.66 5.95 5.04 5.88 VAPOUR PRESSURE (HPA) 4.93 4.02 6.14 8.37 8.15 9.54 10.63 9.47 9.33 8.94 7.99 6.77 7.86 SATURATION DEF. (HPA) 4.82 7.48 6.36 10.09 19.04 29.25 40.89 37.54 26.68 16.60 5.25 3.35 17.28 RELATIVE HUMIDITY (MEAN %) 57 41 54 50 35 28 24 24 30 40 65 71 43 RELATIVE HUMIDITY (MAX. %) 80 73 80 78 64 53 43 45 50 66 87 91 68 RELATIVE HUMIDITY (MIN. %) 39 21 36 32 22 18 16 13 20 26 47 54 29 RELATIVE HUMIDITY (MEAN% 03UTC) 77 71 78 78 63 53 43 45 50 65 86 90 67 RELATIVE HUMIDITY (MEAN% 09UTC) 48 30 44 40 23 21 17 15 23 29 53 62 34 RELATIVE HUMIDITY (MEAN% 15UTC) 53 31 49 44 32 23 19 20 25 34 63 69 39 RH=0 => RELATIVE HUMIDITY < 0.5% AMOUNT OF PRECIPITATION MM. 46.2 5.3 94.2 43.9 3.9 1.0 0.8 0.0 0.0 0.4 30.3 81.3 307.3 DAYS WITH PRECIPITATION >=10 2 0 2 1 0 0 0 0 0 0 1 3 9 DAYS WITH PRECIPITATION >= 5 3 0 5 2 0 0 0 0 0 0 1 4 15 DAYS WITH PRECIPITATION >= 1 6 2 10 9 2 1 0 0 0 0 6 6 42 DAYS WITH PRECIPITATION 7 5 15 11 5 3 1 0 0 3 9 10 69 GREATEST DAILY PRECIPITATION 23.0 3.8 42.0 11.0 2.0 1.0 0.8 0.0 0.0 0.3 16.0 35.0 42.0 DAY 17 22 25 6 6 23 25 ** ** 21 27 1 DAY WITH THUNDER STORM 0 0 2 1 2 0 0 0 0 0 1 0 6 DAYS WITH SNOW OR SLEET 3 0 1 0 0 0 0 0 0 0 0 1 5 DAYS WITH DUST 1 0 1 1 1 3 2 0 0 0 0 0 9 WIND DIRECTION (PREVAILING) 315 315 315 315 315 315 315 315 315 315 180 315 315 PREVAILING WIND SPEED(KNOTS) 7.0 8.8 8.7 7.7 9.4 10.9 6.9 6.5 7.6 7.3 5.3 4.9 8.1 PREVAILING WIND PERCENT 6.5 14.3 17.4 12.7 16.1 12.7 12.3 5.2 11.3 7.7 4.0 5.8 10.4 CALMS PERCENT OF WIND 73.5 54.3 54.8 64.0 69.0 64.0 57.4 79.4 64.7 76.8 83.3 82.6 68.8 NO. OF WIND OBSERVATION 155 140 155 150 155 150 155 155 150 155 150 155 1825 VECTOR WIND DIRECTION (MEAN) 263 262 271 275 323 300 254 334 303 287 217 273 281 VECTOR WIND MAGNITUDE(KNOTS) 0.8 1.9 2.8 1.7 1.6 1.6 1.2 0.5 1.0 1.0 0.4 0.4 1.1 WIND STEADINESES (MEAN %) 42.1 45.2 65.1 56.7 66.7 53.3 41.4 41.7 45.5 62.5 40.0 44.4 45.8 WIND SPEED (MEAN KNOTS) 1.9 4.2 4.3 3.0 2.4 3.0 2.9 1.2 2.2 1.6 1.0 0.9 2.4 FASTEST WIND DIRECTION 310 180 270 300 320 320 170 320 300 330 310 180 180 FASTEST WIND SPEED (KNOTS) 16 49 25 25 23 39 16 10 17 19 12 10 49 DAY 17 21 25 11 17 1 3 2 24 1 5 9 DAYS WITH SKY CLEAR (0-2)/8 16 19 14 13 20 22 23 30 30 18 12 15 232 DAYS WITH P.CLOUDY (3-6)/8 11 6 10 11 10 8 8 1 0 12 11 11 99 DAYS WITH CLOUDY (7-8)/8 4 3 7 6 1 0 0 0 0 1 7 5 34 DAYS WITH VISIBILITY =< 2 KM 2 0 3 0 0 0 0 0 0 0 0 3 8 DURATION OF SUNSHINE HOURS 222.9 229.9 237.0 259.0 318.2 321.6 330.8 340.2 318.4 260.7 163.9 193.8 3196.4 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ZARGHAN (40847) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 29 47 N LONGITUDE 52 43 E DATA PROCESSING CENTER ELEVATION 1596.0 M MEANS AND EXTREMES FOR THE YEAR 1997 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL MEAN QFE PRESSURE IN HPA 841.8 841.5 839.2 840.2 840.7 836.8 833.0 836.0 840.7 843.8 843.4 842.7 840.0 MAX. QFE PRESSURE IN HPA 847.7 846.4 847.6 844.6 844.8 842.0 836.5 840.0 845.4 847.9 849.2 848.7 849.2 DAY-HOUR 8- 6 17- 6 11- 6 14- 6 12- 6 8- 6 19- 6 10- 6 19- 6 8- 6 8- 6 29- 6 MIN. QFE PRESSURE IN HPA 831.2 837.4 830.3 837.0 837.0 829.2 828.0 831.0 836.3 840.4 838.7 836.7 828.0 DAY-HOUR 17-12 10-12 29-12 3-12 3-15 30-15 16-12 5-12 2-12 24-12 23-12 10-12 MEAN QNH PRESSURE IN HPA 1020.2 1019.8 1017.1 1018.3 1018.9 1014.4 1009.9 1013.3 1018.9 1022.5 1022.0 1021.2 1018.0 MAX. QNH PRESSURE IN HPA 1027.1 1025.5 1026.9 1023.4 1023.7 1020.4 1014.0 1018.1 1024.4 1027.3 1028.8 1028.2 1028.8 DAY-HOUR 8- 6 17- 6 11- 6 14- 6 12- 6 8- 6 19- 6 10- 6 19- 6 8- 6 8- 6 29- 6 MIN. QNH PRESSURE IN HPA 1007.8 1015.0 1006.7 1014.6 1014.6 1005.4 1004.0 1007.5 1013.7 1018.5 1016.5 1014.2 1004.0 DAY-HOUR 17-12 10-12 29-12 3-12 3-15 30-15 16-12 5-12 2-12 24-12 23-12 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 842.3 841.9 839.6 840.8 841.2 837.5 833.8 836.9 841.5 844.5 843.6 842.9 840.5 MAX. QFE PRESSURE IN HPA 846.6 844.7 846.0 844.4 843.8 841.3 836.1 839.6 844.5 847.0 848.0 846.8 848.0 DAY 7 17 11 18 12 8 23 10 19 9 8 29 MIN. QFE PRESSURE IN HPA 834.1 838.2 834.5 838.0 837.5 832.3 829.5 833.0 838.8 841.3 840.0 838.6 829.5 DAY 17 10 25 11 5 20 16 1 3 24 24 11 MEAN QNH PRESSURE IN HPA 1020.7 1020.3 1017.6 1019.0 1019.5 1015.1 1010.8 1014.4 1019.8 1023.4 1022.2 1021.4 1018.7 MAX. QNH PRESSURE IN HPA 1025.8 1023.6 1025.1 1023.2 1022.5 1019.6 1013.5 1017.6 1023.3 1026.2 1027.4 1026.0 1027.4 DAY 7 17 11 18 12 8 23 10 19 9 8 29 MIN. QNH PRESSURE IN HPA 1011.2 1016.0 1011.6 1015.7 1015.1 1009.1 1005.8 1009.9 1016.7 1019.6 1018.1 1016.4 1005.8 DAY 17 10 25 11 5 20 16 1 3 24 24 11 MEAN QFF PRESSURE IN HPA 1021.6 1020.2 1015.8 1013.5 1010.8 1002.6 995.2 1000.1 1008.9 1015.6 1019.9 1021.3 1012.1 MAX. QFF PRESSURE IN HPA 1028.1 1026.0 1026.7 1019.0 1015.4 1008.2 998.8 1004.8 1012.5 1019.1 1025.6 1027.0 1028.1 DAY 7 8 1 14 7 5 25 29 29 28 30 30 MIN. QFF PRESSURE IN HPA 1010.4 1011.2 1008.3 1008.6 1005.3 995.1 990.0 993.5 1003.7 1011.8 1015.3 1013.8 990.0 DAY 17 23 24 28 31 30 16 1 2 23 24 10 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ZARGHAN (40847) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 29 47 N LONGITUDE 52 43 E DATA PROCESSING CENTER ELEVATION 1596.0 M MEANS AND EXTREMES FOR THE YEAR 1997 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 0600 UTC. MEAN QFE PRESSURE IN HPA 843.2 843.0 840.4 841.5 842.0 838.2 834.2 837.5 842.3 845.5 844.8 844.2 841.4 MAX. QFE PRESSURE IN HPA 847.7 846.4 847.6 844.6 844.8 842.0 836.5 840.0 845.4 847.9 849.2 848.7 849.2 DAY 8 17 11 14 12 8 19 10 19 8 8 29 MIN. QFE PRESSURE IN HPA 834.1 839.5 834.6 838.9 838.0 832.6 830.0 834.0 839.5 842.7 841.4 839.5 830.0 DAY 17 27 25 11 5 30 16 1 2 24 20 14 MEAN QNH PRESSURE IN HPA 1021.8 1021.6 1018.5 1019.8 1020.4 1015.9 1011.3 1015.1 1020.8 1024.5 1023.7 1023.0 1019.7 MAX. QNH PRESSURE IN HPA 1027.1 1025.5 1026.9 1023.4 1023.7 1020.4 1014.0 1018.1 1024.4 1027.3 1028.8 1028.2 1028.8 DAY 8 17 11 14 12 8 19 10 19 8 8 29 MIN. QNH PRESSURE IN HPA 1011.2 1017.5 1011.8 1016.8 1015.7 1009.4 1006.4 1011.1 1017.5 1021.2 1019.7 1017.5 1006.4 DAY 17 27 25 11 5 30 16 1 2 24 20 14 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 842.1 841.9 839.6 840.6 841.2 837.3 833.4 836.4 841.2 844.0 843.6 842.9 840.3 MAX. QFE PRESSURE IN HPA 846.5 845.5 846.7 844.0 844.1 841.1 835.7 839.6 844.1 846.7 847.5 847.3 847.5 DAY 19 17 11 14 12 8 22 10 19 8 4 29 MIN. QFE PRESSURE IN HPA 833.4 837.8 833.4 837.8 839.1 831.4 829.5 833.1 838.9 841.5 839.9 837.3 829.5 DAY 17 10 29 7 31 30 16 5 3 24 23 14 MEAN QNH PRESSURE IN HPA 1020.6 1020.3 1017.5 1018.7 1019.4 1014.9 1010.3 1013.9 1019.4 1022.7 1022.3 1021.4 1018.5 MAX. QNH PRESSURE IN HPA 1025.7 1024.5 1025.9 1022.7 1022.9 1019.3 1013.0 1017.6 1022.9 1025.9 1026.8 1026.6 1026.8 DAY 19 17 11 14 12 8 22 10 19 8 4 29 MIN. QNH PRESSURE IN HPA 1010.4 1015.5 1010.4 1015.5 1017.0 1008.0 1005.8 1010.0 1016.8 1019.8 1017.9 1014.9 1005.8 DAY 17 10 29 7 31 30 16 5 3 24 23 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 840.5 840.2 838.0 839.1 839.7 835.8 831.9 834.7 839.3 842.2 842.4 841.6 838.8 MAX. QFE PRESSURE IN HPA 844.9 843.2 846.1 842.0 843.8 839.6 834.0 837.7 842.4 845.0 848.1 845.9 848.1 DAY 19 17 11 13 23 7 19 10 29 8 5 29 MIN. QFE PRESSURE IN HPA 831.2 837.4 830.3 837.0 837.1 829.5 828.0 831.0 836.3 840.4 838.7 836.7 828.0 DAY 17 10 29 3 4 30 16 5 2 24 23 10 MEAN QNH PRESSURE IN HPA 1018.7 1018.3 1015.7 1017.0 1017.8 1013.2 1008.6 1011.8 1017.2 1020.7 1020.9 1019.9 1016.6 MAX. QNH PRESSURE IN HPA 1023.8 1021.8 1025.2 1020.4 1022.5 1017.6 1011.1 1015.4 1020.9 1023.9 1027.5 1025.0 1027.5 DAY 19 17 11 13 23 7 19 10 29 8 5 29 MIN. QNH PRESSURE IN HPA 1007.8 1015.0 1006.7 1014.6 1014.7 1005.8 1004.0 1007.5 1013.7 1018.5 1016.5 1014.2 1004.0 DAY 17 10 29 3 4 30 16 5 2 24 23 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 ZARGHAN (40847) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 29 47 N LONGITUDE 52 43 E DATA PROCESSING CENTER ELEVATION 1596.0 M MEANS AND EXTREMES FOR THE YEAR 1997 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 1500 UTC. MEAN QFE PRESSURE IN HPA 841.0 840.6 838.3 839.2 839.7 835.6 831.8 834.4 839.3 842.7 842.6 842.1 838.9 MAX. QFE PRESSURE IN HPA 844.9 843.4 846.6 842.0 843.0 839.6 834.8 837.6 842.7 845.7 847.5 846.5 847.5 DAY 19 17 11 13 15 7 24 31 29 8 5 29 MIN. QFE PRESSURE IN HPA 832.0 837.9 832.6 837.0 837.0 829.2 828.7 831.0 836.3 840.7 839.2 836.7 828.7 DAY 17 27 29 26 3 30 16 5 2 23 23 10 MEAN QNH PRESSURE IN HPA 1019.2 1018.8 1016.1 1017.1 1017.7 1013.0 1008.5 1011.5 1017.3 1021.2 1021.1 1020.5 1016.8 MAX. QNH PRESSURE IN HPA 1023.8 1022.0 1025.8 1020.4 1021.6 1017.6 1012.0 1015.3 1021.2 1024.7 1026.8 1025.7 1026.8 DAY 19 17 11 13 15 7 24 31 29 8 5 29 MIN. QNH PRESSURE IN HPA 1008.7 1015.6 1009.4 1014.6 1014.6 1005.4 1004.9 1007.5 1013.7 1018.9 1017.1 1014.2 1004.9 DAY 17 27 29 26 3 30 16 5 2 23 23 10 MEAN QFF PRESSURE IN HPA 1019.9 1018.7 1014.1 1011.4 1008.9 1000.3 992.8 997.1 1006.3 1013.4 1018.7 1020.3 1010.1 MAX. QFF PRESSURE IN HPA 1026.9 1023.6 1024.3 1016.8 1013.7 1007.0 996.5 1002.5 1011.0 1017.7 1024.3 1026.6 1026.9 DAY 19 7 11 13 9 7 24 31 29 28 5 28 MIN. QFF PRESSURE IN HPA 1009.2 1011.3 1004.8 1006.5 1003.4 991.4 988.1 991.7 1000.7 1010.0 1014.6 1011.4 988.1 DAY 17 22 29 26 30 30 11 1 2 23 13 10 PRESSURE AT HOUR 1800 UTC. MEAN QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** PRESSURE AT HOUR 2100 UTC. MEAN QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ZARGHAN (40847) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 29 47 N LONGITUDE 52 43 E DATA PROCESSING CENTER ELEVATION 1596.0 M MEANS AND EXTREMES FOR THE YEAR 1998 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AIR TEMPERATURE (C) 4.6 7.3 11.4 16.9 23.3 28.3 31.1 30.0 26.4 20.1 14.3 10.8 18.7 MINIMUN AIR TEMPERATURE (C) -1.7 0.3 3.9 6.4 10.4 14.2 18.7 17.3 13.3 6.9 1.8 -0.2 7.6 DAYS WITH MINIMUM TEMP. >=21 0 0 0 0 0 0 6 3 0 0 0 0 9 DAYS WITH MINIMUM TEMP. <=-4 10 4 0 0 0 0 0 0 0 0 0 1 15 DAYS WITH FREEZING MIN.<= 0 22 17 4 0 0 0 0 0 0 0 3 16 62 TEMPERATURE RECORDS LOWEST(C) -8.2 -5.2 -2.0 0.8 4.8 11.6 16.0 13.8 9.6 3.0 -0.8 -4.0 -8.2 DAY 14 24 6 6 3 2 5 15 20 28 27 9 MAXIMUM AIR TEMPERATURE (C) 9.9 12.8 16.4 23.1 29.3 34.6 37.4 36.5 33.6 27.9 22.5 19.1 25.3 DAYS WITH MAXIMUM TEMP. >=30 0 0 0 0 16 30 31 31 30 8 0 0 146 DAYS WITH MAXIMUM TEMP. <= 0 0 0 0 0 0 0 0 0 0 0 0 0 0 TEMPERATURE RECORDS HIGHEST(C) 14.0 18.0 25.5 27.6 34.0 37.0 42.2 39.2 36.5 32.5 24.2 20.8 42.2 DAY 1 5 29 21 28 30 11 20 3 1 3 23 DIF. BETWEEN (MAX.-MIN.) (C) 11.6 12.5 12.5 16.7 18.9 20.4 18.7 19.2 20.3 21.0 20.7 19.3 17.7 MEAN DAILY TEMP. (MDT) (C) 4.1 6.5 10.2 14.7 19.8 24.4 28.1 26.9 23.4 17.4 12.1 9.4 16.4 COOLING DEG. DAYS(BASE 21 0C) 0.0 0.0 0.0 0.0 12.8 102.4 218.8 183.1 73.7 1.1 0.0 0.0 592.0 HEATING DEG. DAYS(BASE 18 0C) 432.2 321.3 242.7 98.5 14.5 0.0 0.0 0.0 0.0 41.4 176.5 265.2 1592.3 DEWPOINT (MEAN C) -1.3 -0.8 2.6 4.6 4.7 4.7 6.4 5.2 2.5 -2.1 -4.8 -3.8 1.5 MIXING RATIO (G/KG) 4.25 4.57 5.83 6.54 6.52 6.53 7.36 6.84 5.59 3.98 3.26 3.55 5.40 VAPOUR PRESSURE (HPA) 5.71 6.13 7.80 8.75 8.71 8.70 9.76 9.10 7.48 5.36 4.40 4.79 7.22 SATURATION DEF. (HPA) 3.17 4.61 6.30 11.74 21.58 31.97 37.84 35.78 29.25 20.17 13.26 9.25 18.74 RELATIVE HUMIDITY (MEAN %) 68 61 59 49 33 25 24 24 25 26 30 39 39 RELATIVE HUMIDITY (MAX. %) 89 84 83 82 61 48 45 47 49 51 55 62 63 RELATIVE HUMIDITY (MIN. %) 50 44 40 30 20 15 14 13 13 13 16 23 24 RELATIVE HUMIDITY (MEAN% 03UTC) 88 82 81 82 60 48 45 47 49 51 55 61 62 RELATIVE HUMIDITY (MEAN% 09UTC) 61 54 49 38 24 17 16 17 15 16 20 28 30 RELATIVE HUMIDITY (MEAN% 15UTC) 64 53 54 42 27 21 19 16 19 21 26 37 33 RH=0 => RELATIVE HUMIDITY < 0.5% AMOUNT OF PRECIPITATION MM. 87.8 137.9 70.8 39.3 10.2 0.7 1.0 0.0 2.0 0.2 0.0 0.0 349.9 DAYS WITH PRECIPITATION >=10 3 6 2 1 0 0 0 0 0 0 0 0 12 DAYS WITH PRECIPITATION >= 5 5 6 6 4 1 0 0 0 0 0 0 0 22 DAYS WITH PRECIPITATION >= 1 6 8 11 5 2 0 1 0 1 0 0 0 34 DAYS WITH PRECIPITATION 8 9 13 5 3 1 2 0 1 1 0 0 43 GREATEST DAILY PRECIPITATION 37.0 45.0 19.0 16.0 9.0 0.7 1.0 0.0 2.0 0.2 0.0 0.0 45.0 DAY 6 12 18 1 16 19 26 ** 15 12 ** ** DAY WITH THUNDER STORM 0 1 0 0 0 0 0 0 0 0 0 0 1 DAYS WITH SNOW OR SLEET 2 0 0 0 0 0 0 0 0 0 0 0 2 DAYS WITH DUST 0 0 0 0 1 0 0 0 1 0 0 0 2 WIND DIRECTION (PREVAILING) 315 315 270 315 315 360 180 315 45 180 315 270 315 PREVAILING WIND SPEED(KNOTS) 5.4 7.0 8.2 6.0 5.7 5.2 6.2 5.9 5.3 6.3 4.4 5.4 6.1 PREVAILING WIND PERCENT 11.0 12.9 11.6 9.3 14.8 11.3 6.5 10.3 9.3 9.0 6.7 6.5 7.8 CALMS PERCENT OF WIND 67.7 65.0 63.2 68.0 52.3 76.7 70.3 54.2 64.0 66.5 76.7 77.4 66.8 NO. OF WIND OBSERVATION 155 140 155 150 155 150 155 155 150 155 150 155 1825 VECTOR WIND DIRECTION (MEAN) 275 283 264 256 283 329 237 313 348 161 305 252 276 VECTOR WIND MAGNITUDE(KNOTS) 0.9 0.9 1.7 1.0 1.6 0.9 0.3 0.3 0.4 0.7 0.4 0.6 0.6 WIND STEADINESES (MEAN %) 47.4 34.6 60.7 47.6 57.1 64.3 16.7 12.0 17.4 36.8 36.4 42.9 30.0 WIND SPEED (MEAN KNOTS) 1.9 2.6 2.8 2.1 2.8 1.4 1.8 2.5 2.3 1.9 1.1 1.4 2.0 FASTEST WIND DIRECTION 280 330 320 240 240 270 310 330 210 170 250 210 210 FASTEST WIND SPEED (KNOTS) 12 16 16 16 14 16 16 16 27 14 10 16 27 DAY 6 12 25 21 15 13 16 5 14 30 16 21 DAYS WITH SKY CLEAR (0-2)/8 16 16 11 17 23 27 28 26 27 27 27 19 264 DAYS WITH P.CLOUDY (3-6)/8 12 7 10 7 8 3 3 5 3 4 3 12 77 DAYS WITH CLOUDY (7-8)/8 3 5 10 6 0 0 0 0 0 0 0 0 24 DAYS WITH VISIBILITY =< 2 KM 1 0 0 1 0 0 0 0 0 0 0 0 2 DURATION OF SUNSHINE HOURS 206.2 199.9 202.6 263.5 349.4 348.1 320.6 344.7 308.5 306.7 279.2 252.9 3382.3 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ZARGHAN (40847) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 29 47 N LONGITUDE 52 43 E DATA PROCESSING CENTER ELEVATION 1596.0 M MEANS AND EXTREMES FOR THE YEAR 1998 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL MEAN QFE PRESSURE IN HPA 841.0 841.2 841.1 841.1 840.5 837.8 834.6 837.3 839.4 843.0 845.0 846.2 840.7 MAX. QFE PRESSURE IN HPA 848.9 848.2 848.4 849.5 846.5 842.4 840.5 841.8 844.4 848.0 850.7 853.0 853.0 DAY-HOUR 4- 6 5- 6 27- 9 12- 6 8- 6 5- 6 22- 6 29- 6 26- 6 26- 6 21- 6 10- 6 MIN. QFE PRESSURE IN HPA 830.0 834.4 831.4 835.4 834.6 831.8 829.1 833.6 834.8 838.4 840.8 840.5 829.1 DAY-HOUR 13- 9 16- 3 1-12 21-12 30-15 30-15 7-15 21-15 3-12 1-12 1-12 21-12 MEAN QNH PRESSURE IN HPA 1019.2 1019.5 1019.3 1019.3 1018.6 1015.5 1011.7 1014.9 1017.4 1021.6 1023.9 1025.3 1018.8 MAX. QNH PRESSURE IN HPA 1028.5 1027.6 1027.9 1029.2 1025.7 1020.9 1018.6 1020.2 1023.2 1027.4 1030.6 1033.3 1033.3 DAY-HOUR 4- 6 5- 6 27- 9 12- 6 8- 6 5- 6 22- 6 29- 6 26- 6 26- 6 21- 6 10- 6 MIN. QNH PRESSURE IN HPA 1006.4 1011.5 1008.0 1012.7 1011.8 1008.5 1005.3 1010.6 1012.0 1016.2 1019.0 1018.6 1005.3 DAY-HOUR 13- 9 16- 3 1-12 21-12 30-15 30-15 7-15 21-15 3-12 1-12 1-12 21-12 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY-HOUR **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY-HOUR **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** PRESSURE AT HOUR 0000 UTC. MEAN QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** PRESSURE AT HOUR 0300 UTC. MEAN QFE PRESSURE IN HPA 841.0 841.3 841.0 841.1 840.9 838.6 835.4 838.1 840.2 843.8 845.6 846.6 841.1 MAX. QFE PRESSURE IN HPA 847.0 846.7 846.1 847.7 845.1 841.9 839.8 841.2 844.0 847.3 850.0 851.6 851.6 DAY 4 24 28 12 8 5 22 29 26 14 21 10 MIN. QFE PRESSURE IN HPA 830.9 834.4 835.2 836.5 836.7 834.7 830.9 835.4 836.7 840.2 842.9 842.2 830.9 DAY 13 16 2 24 31 30 8 22 4 4 2 21 MEAN QNH PRESSURE IN HPA 1019.2 1019.5 1019.3 1019.3 1019.1 1016.4 1012.6 1015.8 1018.2 1022.5 1024.6 1025.8 1019.4 MAX. QNH PRESSURE IN HPA 1026.2 1025.9 1025.2 1027.1 1024.0 1020.3 1017.8 1019.5 1022.7 1026.6 1029.8 1031.6 1031.6 DAY 4 24 28 12 8 5 22 29 26 14 21 10 MIN. QNH PRESSURE IN HPA 1007.4 1011.5 1012.5 1014.0 1014.2 1011.9 1007.4 1012.7 1014.2 1018.3 1021.5 1020.6 1007.4 DAY 13 16 2 24 31 30 8 22 4 4 2 21 MEAN QFF PRESSURE IN HPA 1020.5 1018.9 1016.0 1013.4 1009.2 1003.5 997.7 1001.6 1006.8 1015.6 1021.6 1024.7 1012.5 MAX. QFF PRESSURE IN HPA 1028.2 1028.8 1021.6 1021.8 1015.3 1009.0 1004.5 1006.6 1011.5 1021.9 1027.1 1033.2 1033.2 DAY 4 24 22 12 3 20 22 29 26 29 21 10 MIN. QFF PRESSURE IN HPA 1006.0 1007.9 1007.0 1006.1 1003.1 997.8 992.1 996.8 1000.6 1008.2 1017.7 1018.0 992.1 DAY 13 12 30 23 30 30 8 21 3 1 2 22 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ZARGHAN (40847) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 29 47 N LONGITUDE 52 43 E DATA PROCESSING CENTER ELEVATION 1596.0 M MEANS AND EXTREMES FOR THE YEAR 1998 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 0600 UTC. MEAN QFE PRESSURE IN HPA 842.3 842.7 842.3 842.3 841.7 839.1 835.8 838.8 841.0 844.7 846.7 847.8 842.1 MAX. QFE PRESSURE IN HPA 848.9 848.2 848.1 849.5 846.5 842.4 840.5 841.8 844.4 848.0 850.7 853.0 853.0 DAY 4 5 27 12 8 5 22 29 26 26 21 10 MIN. QFE PRESSURE IN HPA 831.7 835.5 836.2 837.9 835.7 835.0 831.2 836.2 837.8 841.3 844.2 843.1 831.2 DAY 13 16 1 24 30 30 8 4 3 4 1 21 MEAN QNH PRESSURE IN HPA 1020.7 1021.2 1020.7 1020.8 1020.0 1017.0 1013.2 1016.7 1019.2 1023.5 1025.9 1027.2 1020.5 MAX. QNH PRESSURE IN HPA 1028.5 1027.6 1027.5 1029.2 1025.7 1020.9 1018.6 1020.2 1023.2 1027.4 1030.6 1033.3 1033.3 DAY 4 5 27 12 8 5 22 29 26 26 21 10 MIN. QNH PRESSURE IN HPA 1008.4 1012.8 1013.6 1015.6 1013.0 1012.2 1007.8 1013.6 1015.5 1019.6 1023.0 1021.7 1007.8 DAY 13 16 1 24 30 30 8 4 3 4 1 21 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** PRESSURE AT HOUR 0900 UTC. MEAN QFE PRESSURE IN HPA 841.3 841.8 841.6 841.6 841.0 838.2 835.0 837.8 839.8 843.2 845.1 846.2 841.0 MAX. QFE PRESSURE IN HPA 847.9 847.1 848.4 848.4 845.7 841.8 839.7 840.6 843.1 846.7 848.8 851.1 851.1 DAY 4 23 27 12 8 6 22 29 25 25 21 10 MIN. QFE PRESSURE IN HPA 830.0 835.3 834.2 836.5 835.2 834.1 830.6 835.2 836.6 840.0 842.4 841.2 830.0 DAY 13 16 1 21 30 30 8 22 3 4 1 21 MEAN QNH PRESSURE IN HPA 1019.5 1020.1 1019.9 1019.9 1019.2 1016.0 1012.2 1015.5 1017.9 1021.9 1024.0 1025.3 1019.3 MAX. QNH PRESSURE IN HPA 1027.3 1026.4 1027.9 1027.9 1024.7 1020.2 1017.7 1018.8 1021.7 1025.9 1028.3 1031.0 1031.0 DAY 4 23 27 12 8 6 22 29 25 25 21 10 MIN. QNH PRESSURE IN HPA 1006.4 1012.6 1011.3 1014.0 1012.5 1011.2 1007.1 1012.5 1014.1 1018.1 1020.9 1019.5 1006.4 DAY 13 16 1 21 30 30 8 22 3 4 1 21 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** PRESSURE AT HOUR 1200 UTC. MEAN QFE PRESSURE IN HPA 839.9 840.0 840.0 840.2 839.6 836.8 833.5 836.2 838.2 841.7 843.6 844.8 839.5 MAX. QFE PRESSURE IN HPA 847.2 845.5 846.6 846.3 844.7 841.2 838.0 838.6 841.7 845.0 848.0 849.5 849.5 DAY 4 23 26 12 8 19 22 28 26 25 21 10 MIN. QFE PRESSURE IN HPA 831.3 834.6 831.4 835.4 835.0 832.4 829.2 833.9 834.8 838.4 840.8 840.5 829.2 DAY 13 16 1 21 30 30 8 22 3 1 1 21 MEAN QNH PRESSURE IN HPA 1018.0 1018.1 1018.1 1018.3 1017.6 1014.3 1010.5 1013.6 1016.0 1020.0 1022.3 1023.7 1017.5 MAX. QNH PRESSURE IN HPA 1026.5 1024.5 1025.8 1025.4 1023.6 1019.5 1015.7 1016.4 1020.1 1023.9 1027.4 1029.2 1029.2 DAY 4 23 26 12 8 19 22 28 26 25 21 10 MIN. QNH PRESSURE IN HPA 1007.9 1011.8 1008.0 1012.7 1012.2 1009.2 1005.4 1010.9 1012.0 1016.2 1019.0 1018.6 1005.4 DAY 13 16 1 21 30 30 8 22 3 1 1 21 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ZARGHAN (40847) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 29 47 N LONGITUDE 52 43 E DATA PROCESSING CENTER ELEVATION 1596.0 M MEANS AND EXTREMES FOR THE YEAR 1998 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 1500 UTC. MEAN QFE PRESSURE IN HPA 840.5 840.4 840.4 840.2 839.3 836.4 833.3 835.7 838.0 841.9 843.9 845.4 839.6 MAX. QFE PRESSURE IN HPA 847.8 845.8 847.5 845.4 843.1 840.4 837.1 838.2 841.4 845.0 848.0 850.1 850.1 DAY 4 23 26 12 8 19 22 29 26 25 21 9 MIN. QFE PRESSURE IN HPA 834.4 834.8 833.1 836.2 834.6 831.8 829.1 833.6 834.8 838.5 841.1 841.6 829.1 DAY 13 15 1 21 30 30 7 21 3 3 1 21 MEAN QNH PRESSURE IN HPA 1018.6 1018.5 1018.6 1018.3 1017.2 1013.8 1010.2 1013.1 1015.7 1020.2 1022.6 1024.4 1017.6 MAX. QNH PRESSURE IN HPA 1027.2 1024.8 1026.8 1024.4 1021.7 1018.5 1014.7 1016.0 1019.7 1023.9 1027.4 1029.9 1029.9 DAY 4 23 26 12 8 19 22 29 26 25 21 9 MIN. QNH PRESSURE IN HPA 1011.5 1012.0 1010.0 1013.6 1011.8 1008.5 1005.3 1010.6 1012.0 1016.3 1019.3 1019.9 1005.3 DAY 13 15 1 21 30 30 7 21 3 3 1 21 MEAN QFF PRESSURE IN HPA 1019.8 1017.8 1015.2 1012.1 1007.2 1000.8 995.3 998.9 1004.3 1013.3 1019.6 1023.2 1010.6 MAX. QFF PRESSURE IN HPA 1027.6 1026.4 1023.3 1018.9 1012.6 1005.8 1000.7 1002.9 1008.3 1018.5 1025.1 1031.7 1031.7 DAY 4 23 26 12 7 19 22 28 18 25 27 9 MIN. QFF PRESSURE IN HPA 1013.7 1011.5 1006.3 1005.0 1000.5 994.4 989.4 994.8 998.8 1006.4 1015.4 1017.2 989.4 DAY 13 12 1 21 30 30 12 21 3 1 1 31 PRESSURE AT HOUR 1800 UTC. MEAN QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** PRESSURE AT HOUR 2100 UTC. MEAN QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ZARGHAN (40847) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 29 47 N LONGITUDE 52 43 E DATA PROCESSING CENTER ELEVATION 1596.0 M MEANS AND EXTREMES FOR THE YEAR 1999 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AIR TEMPERATURE (C) 6.5 9.1 11.2 18.4 24.5 29.6 30.3 29.4 26.0 20.1 14.1 8.2 18.9 MINIMUN AIR TEMPERATURE (C) 0.1 2.4 2.5 7.2 10.3 14.7 17.8 17.4 13.0 7.2 3.4 -1.2 7.9 DAYS WITH MINIMUM TEMP. >=21 0 0 0 0 0 0 2 5 1 0 0 0 8 DAYS WITH MINIMUM TEMP. <=-4 5 0 0 0 0 0 0 0 0 0 1 2 8 DAYS WITH FREEZING MIN.<= 0 18 8 9 0 0 0 0 0 0 0 4 23 62 TEMPERATURE RECORDS LOWEST(C) -7.2 -3.8 -2.2 2.0 6.2 11.6 15.0 12.2 7.0 3.5 -4.0 -4.2 -7.2 DAY 5 1 8 10 6 15 17 29 25 23 30 31 MAXIMUM AIR TEMPERATURE (C) 11.4 14.1 16.5 24.4 30.8 36.0 36.7 35.7 33.4 28.0 21.0 15.3 25.3 DAYS WITH MAXIMUM TEMP. >=30 0 0 0 1 22 30 31 31 27 2 0 0 144 DAYS WITH MAXIMUM TEMP. <= 0 0 0 0 0 0 0 0 0 0 0 0 0 0 TEMPERATURE RECORDS HIGHEST(C) 19.5 17.6 23.6 30.2 35.8 38.2 39.8 37.2 37.0 30.5 25.0 20.6 39.8 DAY 1 20 26 21 31 28 6 31 1 5 2 8 DIF. BETWEEN (MAX.-MIN.) (C) 11.3 11.7 14.0 17.2 20.5 21.3 18.9 18.3 20.4 20.8 17.6 16.5 17.4 MEAN DAILY TEMP. (MDT) (C) 5.8 8.2 9.5 15.8 20.6 25.4 27.2 26.6 23.2 17.6 12.2 7.0 16.6 COOLING DEG. DAYS(BASE 21 0C) 0.0 0.0 0.0 0.0 14.9 131.7 193.5 173.0 77.3 0.0 0.0 0.0 590.6 HEATING DEG. DAYS(BASE 18 0C) 379.0 273.3 264.0 71.7 1.4 0.0 0.0 0.0 0.0 28.0 174.2 339.8 1531.3 DEWPOINT (MEAN C) -0.3 2.5 -0.0 1.5 1.3 1.9 7.1 5.6 4.5 1.1 -1.6 -3.0 1.7 MIXING RATIO (G/KG) 4.67 5.70 4.77 5.31 5.20 5.44 7.79 6.96 6.52 5.01 4.30 3.79 5.46 VAPOUR PRESSURE (HPA) 6.27 7.64 6.38 7.11 6.96 7.25 10.31 9.26 8.70 6.74 5.79 5.12 7.29 SATURATION DEF. (HPA) 3.80 4.34 7.72 15.30 25.71 36.70 35.21 33.79 27.33 18.64 11.35 6.56 18.87 RELATIVE HUMIDITY (MEAN %) 66 68 51 37 26 20 27 25 29 32 39 50 39 RELATIVE HUMIDITY (MAX. %) 85 90 80 69 52 43 50 45 54 57 66 76 64 RELATIVE HUMIDITY (MIN. %) 49 49 33 21 13 10 15 14 16 17 21 32 24 RELATIVE HUMIDITY (MEAN% 03UTC) 83 86 79 69 52 43 50 45 54 57 65 75 63 RELATIVE HUMIDITY (MEAN% 09UTC) 56 59 41 25 16 12 18 16 19 21 28 38 29 RELATIVE HUMIDITY (MEAN% 15UTC) 63 65 43 30 20 15 20 21 21 26 34 46 34 RH=0 => RELATIVE HUMIDITY < 0.5% AMOUNT OF PRECIPITATION MM. 79.6 201.7 81.8 3.6 0.0 0.0 0.0 0.3 0.0 0.0 0.5 17.8 385.3 DAYS WITH PRECIPITATION >=10 3 6 2 0 0 0 0 0 0 0 0 1 12 DAYS WITH PRECIPITATION >= 5 5 8 3 0 0 0 0 0 0 0 0 1 17 DAYS WITH PRECIPITATION >= 1 7 12 8 1 0 0 0 0 0 0 0 1 29 DAYS WITH PRECIPITATION 12 13 9 2 0 0 1 2 0 0 4 3 46 GREATEST DAILY PRECIPITATION 38.0 65.0 45.0 3.0 0.0 0.0 0.0 0.3 0.0 0.0 0.4 17.0 65.0 DAY 18 6 2 7 ** ** ** 17 ** ** 11 12 DAY WITH THUNDER STORM 0 2 0 0 0 0 0 0 0 0 0 0 2 DAYS WITH SNOW OR SLEET 1 0 0 0 0 0 0 0 0 0 0 0 1 DAYS WITH DUST 0 0 0 0 0 1 6 3 0 2 0 0 12 WIND DIRECTION (PREVAILING) 270 270 315 270 270 270 270 270 180 270 270 270 270 PREVAILING WIND SPEED(KNOTS) 5.6 5.0 4.5 7.6 7.5 6.9 5.9 6.0 5.8 8.5 8.4 5.8 6.7 PREVAILING WIND PERCENT 11.6 8.6 10.3 18.0 14.2 10.7 10.3 4.5 8.0 7.1 12.0 5.2 9.7 CALMS PERCENT OF WIND 71.0 68.6 54.2 48.7 60.6 62.7 62.6 80.0 64.7 78.7 68.7 85.8 67.2 NO. OF WIND OBSERVATION 155 140 155 150 155 150 155 155 150 155 150 155 1825 VECTOR WIND DIRECTION (MEAN) 265 217 210 236 265 219 201 270 202 256 223 234 230 VECTOR WIND MAGNITUDE(KNOTS) 0.4 0.9 1.0 2.4 1.5 1.1 0.8 0.1 0.7 0.8 1.9 0.5 0.9 WIND STEADINESES (MEAN %) 25.0 50.0 34.5 60.0 60.0 50.0 34.8 10.0 31.8 57.1 67.9 55.6 42.9 WIND SPEED (MEAN KNOTS) 1.6 1.8 2.9 4.0 2.5 2.2 2.3 1.0 2.2 1.4 2.8 0.9 2.1 FASTEST WIND DIRECTION 50 180 120 210 240 280 240 250 140 260 190 190 240 FASTEST WIND SPEED (KNOTS) 10 16 16 16 35 12 23 25 16 19 27 12 35 DAY 2 20 2 2 11 23 25 18 3 27 12 3 DAYS WITH SKY CLEAR (0-2)/8 13 9 14 14 30 30 29 25 26 30 20 22 262 DAYS WITH P.CLOUDY (3-6)/8 12 12 12 16 1 0 1 6 4 1 10 8 83 DAYS WITH CLOUDY (7-8)/8 6 7 5 0 0 0 1 0 0 0 0 1 20 DAYS WITH VISIBILITY =< 2 KM 1 1 0 0 0 0 0 0 0 0 0 2 4 DURATION OF SUNSHINE HOURS 193.5 166.6 243.9 287.5 363.2 368.5 349.3 330.2 309.9 301.8 252.4 242.3 3409.1 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ZARGHAN (40847) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 29 47 N LONGITUDE 52 43 E DATA PROCESSING CENTER ELEVATION 1596.0 M MEANS AND EXTREMES FOR THE YEAR 1999 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL MEAN QFE PRESSURE IN HPA 841.7 842.0 839.1 840.8 838.9 836.7 833.8 836.8 838.4 842.8 843.2 845.4 840.0 MAX. QFE PRESSURE IN HPA 846.4 847.0 844.8 845.4 844.8 842.6 837.8 843.1 845.0 846.8 849.0 851.0 851.0 DAY-HOUR 12- 6 12- 6 31- 6 5- 9 28- 6 1- 6 1- 6 19- 6 30- 6 11- 6 14- 6 6- 6 MIN. QFE PRESSURE IN HPA 835.4 833.5 831.9 836.4 833.2 829.7 828.0 831.9 834.4 838.4 838.8 840.1 828.0 DAY-HOUR 18-12 6- 3 2- 3 19-12 20-15 24-15 12-15 14-15 16-12 8-12 12-12 15-12 MEAN QNH PRESSURE IN HPA 1020.1 1020.4 1017.1 1019.0 1016.8 1014.2 1010.8 1014.3 1016.2 1021.4 1021.8 1024.4 1018.0 MAX. QNH PRESSURE IN HPA 1025.5 1026.2 1023.7 1024.4 1023.7 1021.1 1015.5 1021.7 1023.9 1026.0 1028.6 1030.9 1030.9 DAY-HOUR 12- 6 12- 6 31- 6 5- 9 28- 6 1- 6 1- 6 19- 6 30- 6 11- 6 14- 6 6- 6 MIN. QNH PRESSURE IN HPA 1012.7 1010.5 1008.6 1013.9 1010.1 1006.0 1004.0 1008.6 1011.5 1016.2 1016.7 1018.2 1004.0 DAY-HOUR 18-12 6- 3 2- 3 19-12 20-15 24-15 12-15 14-15 16-12 8-12 12-12 15-12 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY-HOUR **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY-HOUR **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** PRESSURE AT HOUR 0000 UTC. MEAN QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** PRESSURE AT HOUR 0300 UTC. MEAN QFE PRESSURE IN HPA 841.8 842.1 839.4 841.4 839.5 837.4 834.5 837.6 839.1 843.6 843.7 845.6 840.5 MAX. QFE PRESSURE IN HPA 845.0 845.1 843.6 843.7 844.0 842.0 837.4 842.1 843.9 845.8 848.0 849.5 849.5 DAY 12 12 31 5 28 1 1 19 30 11 15 6 MIN. QFE PRESSURE IN HPA 836.4 833.5 831.9 837.4 835.3 831.7 830.6 834.0 836.4 841.9 839.8 842.1 830.6 DAY 19 6 2 8 21 24 12 7 16 20 12 15 MEAN QNH PRESSURE IN HPA 1020.2 1020.6 1017.3 1019.6 1017.5 1015.0 1011.7 1015.2 1017.0 1022.2 1022.3 1024.7 1018.6 MAX. QNH PRESSURE IN HPA 1023.9 1024.0 1022.3 1022.4 1022.7 1020.4 1015.0 1020.5 1022.6 1024.8 1027.4 1029.2 1029.2 DAY 12 12 31 5 28 1 1 19 30 11 15 6 MIN. QNH PRESSURE IN HPA 1013.9 1010.5 1008.6 1015.0 1012.6 1008.4 1007.1 1011.1 1013.9 1020.3 1017.8 1020.5 1007.1 DAY 19 6 2 8 21 24 12 7 16 20 12 15 MEAN QFF PRESSURE IN HPA 1020.1 1018.5 1014.6 1012.9 1007.2 1001.6 997.1 1001.4 1005.8 1015.2 1018.6 1024.6 1011.5 MAX. QFF PRESSURE IN HPA 1026.7 1023.1 1019.4 1019.2 1011.7 1007.2 1000.5 1007.4 1013.8 1018.4 1025.3 1030.4 1030.4 DAY 5 8 8 11 2 1 1 20 30 17 15 6 MIN. QFF PRESSURE IN HPA 1012.6 1009.0 1005.9 1006.3 1001.4 994.9 992.7 996.7 1001.7 1011.7 1010.0 1018.1 992.7 DAY 18 6 2 8 20 24 12 3 1 9 12 3 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ZARGHAN (40847) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 29 47 N LONGITUDE 52 43 E DATA PROCESSING CENTER ELEVATION 1596.0 M MEANS AND EXTREMES FOR THE YEAR 1999 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 0600 UTC. MEAN QFE PRESSURE IN HPA 843.1 843.3 840.4 842.0 840.2 837.8 835.0 838.3 840.0 844.5 844.8 847.1 841.4 MAX. QFE PRESSURE IN HPA 846.4 847.0 844.8 844.7 844.8 842.6 837.8 843.1 845.0 846.8 849.0 851.0 851.0 DAY 12 12 31 5 28 1 1 19 30 11 14 6 MIN. QFE PRESSURE IN HPA 838.0 835.0 833.0 838.1 836.3 831.7 831.0 834.6 837.2 842.3 840.8 843.0 831.0 DAY 18 6 2 8 20 24 12 7 16 8 12 15 MEAN QNH PRESSURE IN HPA 1021.7 1022.0 1018.5 1020.5 1018.3 1015.5 1012.2 1016.0 1018.0 1023.4 1023.6 1026.4 1019.7 MAX. QNH PRESSURE IN HPA 1025.5 1026.2 1023.7 1023.6 1023.7 1021.1 1015.5 1021.7 1023.9 1026.0 1028.6 1030.9 1030.9 DAY 12 12 31 5 28 1 1 19 30 11 14 6 MIN. QNH PRESSURE IN HPA 1015.7 1012.2 1009.9 1015.8 1013.7 1008.4 1007.5 1011.8 1014.8 1020.8 1019.0 1021.6 1007.5 DAY 18 6 2 8 20 24 12 7 16 8 12 15 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** PRESSURE AT HOUR 0900 UTC. MEAN QFE PRESSURE IN HPA 842.1 842.6 839.6 841.1 839.3 837.0 834.2 837.2 838.8 843.1 843.2 845.7 840.3 MAX. QFE PRESSURE IN HPA 845.6 846.0 843.3 845.4 844.0 842.2 836.4 841.8 843.8 845.9 847.5 849.8 849.8 DAY 12 12 31 5 28 1 8 19 30 11 14 6 MIN. QFE PRESSURE IN HPA 835.8 835.7 833.2 836.9 834.6 831.1 830.1 833.6 836.2 840.5 839.0 841.9 830.1 DAY 18 6 2 8 20 24 12 14 16 8 12 15 MEAN QNH PRESSURE IN HPA 1020.5 1021.1 1017.7 1019.3 1017.3 1014.5 1011.3 1014.8 1016.6 1021.7 1021.9 1024.7 1018.4 MAX. QNH PRESSURE IN HPA 1024.6 1025.1 1021.9 1024.4 1022.7 1020.6 1013.9 1020.2 1022.5 1025.0 1026.8 1029.5 1029.5 DAY 12 12 31 5 28 1 8 19 30 11 14 6 MIN. QNH PRESSURE IN HPA 1013.2 1013.0 1010.1 1014.4 1011.8 1007.7 1006.5 1010.6 1013.6 1018.6 1016.9 1020.3 1006.5 DAY 18 6 2 8 20 24 12 14 16 8 12 15 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** PRESSURE AT HOUR 1200 UTC. MEAN QFE PRESSURE IN HPA 840.6 840.9 838.1 839.7 837.9 835.7 832.8 835.6 837.2 841.5 841.9 844.0 838.8 MAX. QFE PRESSURE IN HPA 844.3 844.3 841.5 843.7 842.0 840.7 835.5 839.7 842.4 844.0 846.2 847.8 847.8 DAY 12 12 31 5 28 1 1 19 30 11 14 6 MIN. QFE PRESSURE IN HPA 835.4 835.2 832.0 836.4 833.6 830.0 828.9 832.6 834.4 838.4 838.8 840.1 828.9 DAY 18 6 2 19 20 24 12 14 16 8 12 15 MEAN QNH PRESSURE IN HPA 1018.8 1019.1 1015.8 1017.7 1015.6 1013.1 1009.6 1012.9 1014.7 1019.8 1020.3 1022.8 1016.7 MAX. QNH PRESSURE IN HPA 1023.1 1023.1 1019.8 1022.4 1020.4 1018.9 1012.8 1017.7 1020.9 1022.7 1025.3 1027.2 1027.2 DAY 12 12 31 5 28 1 1 19 30 11 14 6 MIN. QNH PRESSURE IN HPA 1012.7 1012.5 1008.7 1013.9 1010.6 1006.4 1005.1 1009.4 1011.5 1016.2 1016.7 1018.2 1005.1 DAY 18 6 2 19 20 24 12 14 16 8 12 15 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ZARGHAN (40847) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 29 47 N LONGITUDE 52 43 E DATA PROCESSING CENTER ELEVATION 1596.0 M MEANS AND EXTREMES FOR THE YEAR 1999 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 1500 UTC. MEAN QFE PRESSURE IN HPA 841.0 841.3 838.3 839.7 837.6 835.4 832.5 835.2 837.2 841.5 842.5 844.5 838.9 MAX. QFE PRESSURE IN HPA 844.5 844.7 841.9 843.7 841.3 839.8 835.5 839.3 841.9 844.0 847.0 847.8 847.8 DAY 11 7 27 5 27 1 1 19 30 27 14 6 MIN. QFE PRESSURE IN HPA 835.4 836.0 832.8 836.4 833.2 829.7 828.0 831.9 834.4 838.4 839.9 840.7 828.0 DAY 18 5 2 19 20 24 12 14 16 8 23 15 MEAN QNH PRESSURE IN HPA 1019.3 1019.6 1016.1 1017.7 1015.3 1012.7 1009.2 1012.5 1014.8 1019.9 1021.0 1023.4 1016.8 MAX. QNH PRESSURE IN HPA 1023.3 1023.6 1020.3 1022.4 1019.6 1017.8 1012.8 1017.2 1020.3 1022.7 1026.2 1027.2 1027.2 DAY 11 7 27 5 27 1 1 19 30 27 14 6 MIN. QNH PRESSURE IN HPA 1012.7 1013.4 1009.6 1013.9 1010.1 1006.0 1004.0 1008.6 1011.5 1016.2 1017.9 1018.9 1004.0 DAY 18 5 2 19 20 24 12 14 16 8 23 15 MEAN QFF PRESSURE IN HPA 1019.1 1017.4 1013.1 1010.9 1004.9 999.2 994.8 998.6 1003.6 1012.8 1017.3 1023.2 1009.6 MAX. QFF PRESSURE IN HPA 1024.9 1023.6 1017.4 1015.3 1008.6 1004.2 998.6 1003.8 1011.1 1016.8 1025.0 1029.2 1029.2 DAY 5 7 7 5 9 1 1 18 30 27 14 6 MIN. QFF PRESSURE IN HPA 1012.0 1011.5 1006.1 1005.7 999.7 992.8 989.9 994.2 998.6 1007.2 1010.7 1016.8 989.9 DAY 18 5 2 8 20 24 12 3 1 8 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 ZARGHAN (40847) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 29 47 N LONGITUDE 52 43 E DATA PROCESSING CENTER ELEVATION 1596.0 M MEANS AND EXTREMES FOR THE YEAR 2000 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AIR TEMPERATURE (C) 4.3 8.3 12.6 20.4 25.5 29.1 30.5 29.8 26.0 19.7 11.0 7.7 18.7 MINIMUN AIR TEMPERATURE (C) -1.8 -0.6 1.6 8.6 11.2 14.9 17.6 16.4 12.9 8.2 3.5 1.0 7.8 DAYS WITH MINIMUM TEMP. >=21 0 0 0 0 0 0 6 1 0 0 0 0 7 DAYS WITH MINIMUM TEMP. <=-4 8 3 2 0 0 0 0 0 0 0 0 1 14 DAYS WITH FREEZING MIN.<= 0 23 21 14 0 0 0 0 0 0 0 5 14 77 TEMPERATURE RECORDS LOWEST(C) -10.4 -5.2 -4.4 2.8 8.6 11.0 13.0 13.4 8.6 5.0 -1.0 -4.0 -10.4 DAY 20 4 4 1 13 26 21 21 22 30 23 18 MAXIMUM AIR TEMPERATURE (C) 9.3 14.5 19.5 27.0 32.5 35.6 36.7 36.4 33.1 26.7 16.3 12.9 25.0 DAYS WITH MAXIMUM TEMP. >=30 0 0 0 2 29 30 31 31 30 1 0 0 154 DAYS WITH MAXIMUM TEMP. <= 0 1 0 0 0 0 0 0 0 0 0 0 0 1 TEMPERATURE RECORDS HIGHEST(C) 17.6 19.8 25.2 30.0 36.2 39.5 39.8 38.6 36.0 30.8 25.8 20.6 39.8 DAY 5 26 23 15 31 30 10 4 9 1 1 1 DIF. BETWEEN (MAX.-MIN.) (C) 11.1 15.1 17.9 18.4 21.3 20.7 19.1 20.0 20.2 18.5 12.8 11.9 17.2 MEAN DAILY TEMP. (MDT) (C) 3.7 6.9 10.5 17.8 21.9 25.3 27.1 26.4 23.0 17.4 9.9 6.9 16.4 COOLING DEG. DAYS(BASE 21 0C) 0.0 0.0 0.0 1.5 35.2 128.1 190.5 166.0 64.5 0.4 0.0 0.0 586.3 HEATING DEG. DAYS(BASE 18 0C) 443.0 321.0 231.6 29.4 0.0 0.0 0.0 0.0 0.0 28.1 243.1 342.7 1638.8 DEWPOINT (MEAN C) -2.5 -4.4 -6.1 1.0 -0.3 -1.9 -1.5 0.4 -1.6 -0.5 2.4 0.3 -1.2 MIXING RATIO (G/KG) 3.96 3.45 3.36 5.14 4.72 4.16 4.41 4.92 4.22 4.67 5.52 4.80 4.44 VAPOUR PRESSURE (HPA) 5.32 4.64 4.50 6.88 6.31 5.55 5.87 6.56 5.65 6.28 7.41 6.46 5.95 SATURATION DEF. (HPA) 3.55 7.05 11.21 18.67 28.37 37.26 40.23 37.91 30.29 18.20 6.41 4.50 20.30 RELATIVE HUMIDITY (MEAN %) 67 46 33 32 23 17 15 18 20 32 60 64 36 RELATIVE HUMIDITY (MAX. %) 83 76 61 60 46 38 33 38 43 60 85 86 59 RELATIVE HUMIDITY (MIN. %) 51 25 16 16 11 8 8 9 9 17 42 44 21 RELATIVE HUMIDITY (MEAN% 03UTC) 82 75 59 60 46 38 33 38 43 60 83 85 59 RELATIVE HUMIDITY (MEAN% 09UTC) 59 35 24 22 15 9 9 11 11 20 47 53 26 RELATIVE HUMIDITY (MEAN% 15UTC) 65 36 25 23 15 11 11 12 14 25 58 60 30 RH=0 => RELATIVE HUMIDITY < 0.5% AMOUNT OF PRECIPITATION MM. 151.3 7.7 3.3 0.0 0.0 0.0 0.0 0.0 0.0 12.2 57.5 95.1 327.1 DAYS WITH PRECIPITATION >=10 5 0 0 0 0 0 0 0 0 0 2 4 11 DAYS WITH PRECIPITATION >= 5 7 1 0 0 0 0 0 0 0 1 5 4 18 DAYS WITH PRECIPITATION >= 1 8 1 2 0 0 0 0 0 0 2 6 7 26 DAYS WITH PRECIPITATION 9 4 3 1 0 0 0 0 0 3 9 12 41 GREATEST DAILY PRECIPITATION 49.0 7.0 2.0 0.0 0.0 0.0 0.0 0.0 0.0 9.0 22.0 32.0 49.0 DAY 29 14 25 ** ** ** ** ** ** 4 18 11 DAY WITH THUNDER STORM 1 0 0 0 0 0 0 0 0 0 0 0 1 DAYS WITH SNOW OR SLEET 3 0 0 0 0 0 0 0 0 0 0 0 3 DAYS WITH DUST 0 0 0 0 0 1 5 1 0 1 0 0 8 WIND DIRECTION (PREVAILING) 270 270 180 270 270 180 360 270 180 225 270 180 270 PREVAILING WIND SPEED(KNOTS) 6.0 6.4 9.2 7.7 10.0 8.5 6.5 6.6 8.6 9.3 8.0 9.8 8.2 PREVAILING WIND PERCENT 9.0 9.7 13.5 12.7 18.1 10.0 5.2 4.5 10.7 6.5 6.0 7.7 7.9 CALMS PERCENT OF WIND 77.4 64.8 43.2 64.0 66.5 70.0 70.3 76.1 60.7 72.9 84.0 76.1 68.9 NO. OF WIND OBSERVATION 155 145 155 150 155 150 155 155 150 155 150 155 1830 VECTOR WIND DIRECTION (MEAN) 201 217 205 228 261 170 55 304 154 250 234 191 214 VECTOR WIND MAGNITUDE(KNOTS) 0.8 1.4 2.3 1.7 2.2 1.5 0.2 0.5 1.7 1.0 0.7 0.9 1.0 WIND STEADINESES (MEAN %) 42.1 50.0 47.9 60.7 71.0 62.5 10.0 33.3 54.8 47.6 58.3 50.0 40.0 WIND SPEED (MEAN KNOTS) 1.9 2.8 4.8 2.8 3.1 2.4 2.0 1.5 3.1 2.1 1.2 1.8 2.5 FASTEST WIND DIRECTION 140 220 120 180 280 240 350 280 120 250 280 160 120 FASTEST WIND SPEED (KNOTS) 23 27 23 19 19 19 16 17 35 27 23 29 35 DAY 28 14 24 24 10 13 1 31 13 11 3 1 DAYS WITH SKY CLEAR (0-2)/8 18 22 23 18 27 30 27 27 29 26 12 18 277 DAYS WITH P.CLOUDY (3-6)/8 4 6 7 12 3 0 4 4 1 5 12 9 67 DAYS WITH CLOUDY (7-8)/8 9 1 1 0 1 0 0 0 0 0 6 4 22 DAYS WITH VISIBILITY =< 2 KM 4 0 0 0 0 0 0 0 0 0 2 2 8 DURATION OF SUNSHINE HOURS 190.2 253.1 282.1 298.7 363.9 359.5 349.5 340.7 313.8 288.2 194.2 213.3 3447.2 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ZARGHAN (40847) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 29 47 N LONGITUDE 52 43 E DATA PROCESSING CENTER ELEVATION 1596.0 M MEANS AND EXTREMES FOR THE YEAR 2000 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL MEAN QFE PRESSURE IN HPA 841.0 840.6 839.9 840.7 838.3 835.3 835.4 836.7 838.8 843.0 843.8 843.6 839.8 MAX. QFE PRESSURE IN HPA 849.1 847.4 844.8 844.1 843.4 839.8 841.9 841.1 844.9 847.1 850.3 850.1 850.3 DAY-HOUR 31- 6 11- 6 21- 6 2- 6 7- 6 17- 6 30- 6 23- 6 29- 6 30- 6 30- 6 17- 6 MIN. QFE PRESSURE IN HPA 835.0 833.0 835.0 837.6 833.2 831.5 829.2 831.6 830.4 838.1 836.9 835.8 829.2 DAY-HOUR 17-12 7-12 13-12 21-12 27-15 6-15 10-15 30-15 1-12 1-12 6-12 15-12 MEAN QNH PRESSURE IN HPA 1019.3 1018.8 1018.0 1018.9 1016.1 1012.6 1012.7 1014.3 1016.7 1021.5 1022.5 1022.2 1017.8 MAX. QNH PRESSURE IN HPA 1028.7 1026.7 1023.7 1022.9 1022.0 1017.8 1020.3 1019.3 1023.8 1026.4 1030.1 1029.9 1030.1 DAY-HOUR 31- 6 11- 6 21- 6 2- 6 7- 6 17- 6 30- 6 23- 6 29- 6 30- 6 30- 6 17- 6 MIN. QNH PRESSURE IN HPA 1012.2 1009.9 1012.2 1015.3 1010.1 1008.1 1005.4 1008.2 1006.8 1015.8 1014.4 1013.2 1005.4 DAY-HOUR 17-12 7-12 13-12 21-12 27-15 6-15 10-15 30-15 1-12 1-12 6-12 15-12 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY-HOUR **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY-HOUR **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** PRESSURE AT HOUR 0000 UTC. MEAN QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** PRESSURE AT HOUR 0300 UTC. MEAN QFE PRESSURE IN HPA 840.9 840.8 840.3 841.1 838.9 836.0 836.3 837.7 839.4 843.7 844.1 843.9 840.3 MAX. QFE PRESSURE IN HPA 847.2 845.8 844.0 843.1 842.4 838.9 840.9 840.6 843.8 846.3 848.9 848.0 848.9 DAY 31 11 21 2 7 22 31 21 29 30 30 18 MIN. QFE PRESSURE IN HPA 835.2 834.6 837.5 839.0 836.3 833.2 831.3 834.0 832.4 839.5 839.1 836.0 831.3 DAY 17 8 2 21 17 25 12 31 2 2 22 15 MEAN QNH PRESSURE IN HPA 1019.1 1018.9 1018.4 1019.3 1016.8 1013.4 1013.8 1015.4 1017.4 1022.4 1022.9 1022.6 1018.4 MAX. QNH PRESSURE IN HPA 1026.5 1024.8 1022.7 1021.7 1020.9 1016.8 1019.1 1018.8 1022.5 1025.4 1028.5 1027.4 1028.5 DAY 31 11 21 2 7 22 31 21 29 30 30 18 MIN. QNH PRESSURE IN HPA 1012.5 1011.8 1015.1 1016.9 1013.7 1010.1 1007.9 1011.1 1009.2 1017.5 1017.0 1013.4 1007.9 DAY 17 8 2 21 17 25 12 31 2 2 22 15 MEAN QFF PRESSURE IN HPA 1020.4 1018.4 1015.4 1011.5 1005.9 1000.2 999.4 1001.6 1006.5 1015.2 1020.3 1022.1 1011.4 MAX. QFF PRESSURE IN HPA 1029.3 1027.4 1021.5 1016.5 1010.6 1004.2 1006.0 1006.3 1012.5 1019.8 1027.2 1030.8 1030.8 DAY 31 11 4 2 1 17 31 21 23 30 30 18 MIN. QFF PRESSURE IN HPA 1010.0 1009.6 1008.5 1007.0 1001.7 996.3 991.3 996.0 997.7 1008.6 1012.7 1011.0 991.3 DAY 29 7 19 24 27 25 11 4 2 2 2 15 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ZARGHAN (40847) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 29 47 N LONGITUDE 52 43 E DATA PROCESSING CENTER ELEVATION 1596.0 M MEANS AND EXTREMES FOR THE YEAR 2000 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 0600 UTC. MEAN QFE PRESSURE IN HPA 842.5 842.1 841.4 842.1 839.7 836.6 836.9 838.4 840.4 844.6 845.1 845.1 841.2 MAX. QFE PRESSURE IN HPA 849.1 847.4 844.8 844.1 843.4 839.8 841.9 841.1 844.9 847.1 850.3 850.1 850.3 DAY 31 11 21 2 7 17 30 23 29 30 30 17 MIN. QFE PRESSURE IN HPA 836.8 835.0 837.5 839.9 836.9 833.6 831.7 834.9 833.3 840.3 840.0 837.3 831.7 DAY 17 7 2 21 17 26 12 30 1 2 6 15 MEAN QNH PRESSURE IN HPA 1020.9 1020.6 1019.7 1020.5 1017.7 1014.1 1014.4 1016.2 1018.5 1023.5 1024.1 1024.0 1019.5 MAX. QNH PRESSURE IN HPA 1028.7 1026.7 1023.7 1022.9 1022.0 1017.8 1020.3 1019.3 1023.8 1026.4 1030.1 1029.9 1030.1 DAY 31 11 21 2 7 17 30 23 29 30 30 17 MIN. QNH PRESSURE IN HPA 1014.3 1012.2 1015.1 1017.9 1014.4 1010.6 1008.4 1012.1 1010.2 1018.4 1018.1 1014.9 1008.4 DAY 17 7 2 21 17 26 12 30 1 2 6 15 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** PRESSURE AT HOUR 0900 UTC. MEAN QFE PRESSURE IN HPA 841.5 841.3 840.5 841.1 838.7 835.8 835.8 837.2 839.1 843.1 843.9 843.6 840.1 MAX. QFE PRESSURE IN HPA 847.6 845.8 843.7 842.8 842.1 838.6 840.2 840.4 844.1 845.5 848.5 848.6 848.6 DAY 31 11 21 1 6 17 30 23 29 26 30 17 MIN. QFE PRESSURE IN HPA 836.8 834.1 836.6 838.9 835.7 832.9 831.1 833.3 831.9 839.5 838.5 835.9 831.1 DAY 17 7 2 21 27 26 12 30 1 1 6 15 MEAN QNH PRESSURE IN HPA 1019.8 1019.6 1018.6 1019.4 1016.6 1013.2 1013.1 1014.8 1017.1 1021.7 1022.6 1022.3 1018.2 MAX. QNH PRESSURE IN HPA 1026.9 1024.8 1022.4 1021.3 1020.5 1016.4 1018.3 1018.5 1022.9 1024.5 1028.0 1028.1 1028.1 DAY 31 11 21 1 6 17 30 23 29 26 30 17 MIN. QNH PRESSURE IN HPA 1014.3 1011.2 1014.1 1016.8 1013.0 1009.8 1007.7 1010.2 1008.6 1017.5 1016.3 1013.3 1007.7 DAY 17 7 2 21 27 26 12 30 1 1 6 15 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** PRESSURE AT HOUR 1200 UTC. MEAN QFE PRESSURE IN HPA 840.0 839.3 838.6 839.6 837.3 834.4 834.3 835.5 837.7 841.7 842.7 842.4 838.6 MAX. QFE PRESSURE IN HPA 845.6 843.9 842.1 842.6 840.2 837.3 839.1 838.8 842.4 844.3 847.7 847.0 847.7 DAY 30 11 25 24 1 17 30 23 29 25 17 17 MIN. QFE PRESSURE IN HPA 835.0 833.0 835.0 837.6 833.8 831.7 829.6 832.1 830.4 838.1 836.9 835.8 829.6 DAY 17 7 13 21 27 6 12 30 1 1 6 15 MEAN QNH PRESSURE IN HPA 1018.1 1017.2 1016.4 1017.6 1014.9 1011.5 1011.5 1012.8 1015.3 1020.0 1021.2 1020.9 1016.5 MAX. QNH PRESSURE IN HPA 1024.6 1022.6 1020.5 1021.1 1018.3 1014.9 1017.0 1016.7 1020.9 1023.1 1027.1 1026.2 1027.1 DAY 30 11 25 24 1 17 30 23 29 25 17 17 MIN. QNH PRESSURE IN HPA 1012.2 1009.9 1012.2 1015.3 1010.8 1008.4 1005.9 1008.8 1006.8 1015.8 1014.4 1013.2 1005.9 DAY 17 7 13 21 27 6 12 30 1 1 6 15 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ZARGHAN (40847) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 29 47 N LONGITUDE 52 43 E DATA PROCESSING CENTER ELEVATION 1596.0 M MEANS AND EXTREMES FOR THE YEAR 2000 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 1500 UTC. MEAN QFE PRESSURE IN HPA 840.4 839.6 839.0 839.6 837.0 833.7 833.8 834.9 837.4 841.8 843.2 843.0 838.6 MAX. QFE PRESSURE IN HPA 846.0 843.8 843.1 842.1 840.3 836.0 838.4 838.1 842.2 844.3 848.2 847.2 848.2 DAY 30 10 25 24 1 3 30 23 29 25 17 17 MIN. QFE PRESSURE IN HPA 836.2 833.5 836.0 838.0 833.2 831.5 829.2 831.6 830.4 838.4 837.1 837.4 829.2 DAY 10 7 13 17 27 6 10 30 1 1 6 15 MEAN QNH PRESSURE IN HPA 1018.6 1017.6 1016.9 1017.6 1014.5 1010.8 1010.9 1012.1 1015.0 1020.2 1021.8 1021.5 1016.5 MAX. QNH PRESSURE IN HPA 1025.1 1022.5 1021.7 1020.5 1018.4 1013.4 1016.2 1015.8 1020.6 1023.1 1027.6 1026.5 1027.6 DAY 30 10 25 24 1 3 30 23 29 25 17 17 MIN. QNH PRESSURE IN HPA 1013.6 1010.5 1013.4 1015.7 1010.1 1008.1 1005.4 1008.2 1006.8 1016.2 1014.7 1015.0 1005.4 DAY 10 7 13 17 27 6 10 30 1 1 6 15 MEAN QFF PRESSURE IN HPA 1019.8 1016.9 1013.8 1009.6 1003.6 997.5 996.6 998.4 1004.2 1013.1 1019.2 1021.0 1009.5 MAX. QFF PRESSURE IN HPA 1027.1 1024.9 1017.7 1014.6 1009.4 1001.1 1002.7 1003.0 1010.4 1017.3 1025.6 1029.5 1029.5 DAY 25 10 8 1 1 16 29 23 22 25 17 17 MIN. QFF PRESSURE IN HPA 1010.7 1008.8 1007.9 1006.7 997.5 994.6 989.3 994.6 995.3 1006.5 1010.8 1013.7 989.3 DAY 28 7 24 21 27 6 12 4 1 1 6 15 PRESSURE AT HOUR 1800 UTC. MEAN QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** PRESSURE AT HOUR 2100 UTC. MEAN QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ZARGHAN (40847) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 29 47 N LONGITUDE 52 43 E DATA PROCESSING CENTER ELEVATION 1596.0 M MEANS AND EXTREMES FOR THE YEAR 2001 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AIR TEMPERATURE (C) 5.7 7.9 13.5 19.3 25.2 29.5 32.0 30.2 26.5 21.2 12.4 9.6 19.4 MINIMUN AIR TEMPERATURE (C) -2.4 -1.5 3.0 6.7 12.1 15.0 19.5 17.0 14.0 8.6 1.2 4.3 8.1 DAYS WITH MINIMUM TEMP. >=21 0 0 0 0 0 0 12 2 0 0 0 0 14 DAYS WITH MINIMUM TEMP. <=-4 8 5 0 0 0 0 0 0 0 0 2 0 15 DAYS WITH FREEZING MIN.<= 0 25 20 2 0 0 0 0 0 0 0 12 3 62 TEMPERATURE RECORDS LOWEST(C) -10.6 -5.6 0.0 0.4 6.6 11.0 13.2 12.8 11.2 6.2 -4.2 -1.0 -10.6 DAY 29 1 2 15 7 14 31 17 28 18 20 3 MAXIMUM AIR TEMPERATURE (C) 11.8 14.5 19.9 26.4 31.4 36.0 38.1 36.8 33.5 28.8 20.1 14.0 25.9 DAYS WITH MAXIMUM TEMP. >=30 0 0 0 0 21 30 31 31 30 7 0 0 150 DAYS WITH MAXIMUM TEMP. <= 0 0 0 0 0 0 0 0 0 0 0 0 0 0 TEMPERATURE RECORDS HIGHEST(C) 15.6 20.0 25.0 29.0 35.6 38.6 40.8 38.6 36.6 32.8 26.6 18.0 40.8 DAY 1 28 31 25 16 29 12 8 1 1 5 20 DIF. BETWEEN (MAX.-MIN.) (C) 14.2 16.0 16.9 19.7 19.3 21.0 18.6 19.8 19.5 20.2 18.9 9.7 17.8 MEAN DAILY TEMP. (MDT) (C) 4.7 6.5 11.4 16.5 21.7 25.5 28.8 26.9 23.7 18.7 10.7 9.2 17.0 COOLING DEG. DAYS(BASE 21 0C) 0.0 0.0 0.0 0.0 42.3 134.4 241.8 182.7 81.9 1.5 0.0 0.0 684.6 HEATING DEG. DAYS(BASE 18 0C) 411.7 322.6 204.5 53.0 0.4 0.0 0.0 0.0 0.0 6.4 219.7 274.3 1492.7 DEWPOINT (MEAN C) -3.5 -4.3 0.7 1.2 2.9 1.7 3.5 0.6 -0.4 -1.3 -3.5 5.0 0.2 MIXING RATIO (G/KG) 3.62 3.49 4.93 5.09 5.80 5.40 6.17 5.04 4.54 4.24 3.76 6.62 4.89 VAPOUR PRESSURE (HPA) 4.88 4.69 6.61 6.82 7.74 7.17 8.18 6.73 6.09 5.71 5.06 8.90 6.55 SATURATION DEF. (HPA) 4.82 6.66 9.80 17.11 26.24 36.63 41.86 38.94 30.83 21.37 10.67 3.40 20.69 RELATIVE HUMIDITY (MEAN %) 56 48 46 33 27 20 19 18 20 26 40 75 36 RELATIVE HUMIDITY (MAX. %) 81 75 76 61 50 40 35 36 39 48 65 92 58 RELATIVE HUMIDITY (MIN. %) 35 28 28 19 16 11 12 9 11 13 23 59 22 RELATIVE HUMIDITY (MEAN% 03UTC) 79 74 75 61 50 40 35 36 39 48 64 89 58 RELATIVE HUMIDITY (MEAN% 09UTC) 45 39 36 23 19 13 13 11 13 17 29 68 27 RELATIVE HUMIDITY (MEAN% 15UTC) 51 39 36 25 21 15 14 13 15 20 36 74 30 RH=0 => RELATIVE HUMIDITY < 0.5% AMOUNT OF PRECIPITATION MM. 17.5 41.6 8.2 0.0 2.6 0.0 0.0 0.0 0.0 0.0 5.5 129.2 204.6 DAYS WITH PRECIPITATION >=10 1 1 0 0 0 0 0 0 0 0 0 4 6 DAYS WITH PRECIPITATION >= 5 1 1 0 0 0 0 0 0 0 0 0 7 9 DAYS WITH PRECIPITATION >= 1 2 3 4 0 1 0 0 0 0 0 2 13 25 DAYS WITH PRECIPITATION 4 6 6 0 2 0 0 0 0 0 6 15 39 GREATEST DAILY PRECIPITATION 16.0 36.0 4.0 0.0 2.0 0.0 0.0 0.0 0.0 0.0 3.3 48.0 48.0 DAY 9 11 26 ** 3 ** ** ** ** ** 13 13 DAY WITH THUNDER STORM 0 0 1 0 0 0 0 0 0 0 0 1 2 DAYS WITH SNOW OR SLEET 1 0 0 0 0 0 0 0 0 0 0 0 1 DAYS WITH DUST 0 0 0 0 0 0 0 0 0 2 2 0 4 WIND DIRECTION (PREVAILING) 180 180 180 270 180 180 135 270 270 180 180 180 180 PREVAILING WIND SPEED(KNOTS) 10.6 9.3 7.4 9.6 10.1 9.8 8.6 6.5 7.5 7.9 7.0 6.7 9.0 PREVAILING WIND PERCENT 5.8 7.1 8.4 14.7 13.5 11.3 10.3 8.4 10.0 9.7 5.3 3.9 7.8 CALMS PERCENT OF WIND 80.0 71.4 64.5 64.7 60.0 58.0 52.3 60.6 62.0 69.7 81.3 85.8 67.5 NO. OF WIND OBSERVATION 155 140 155 150 155 150 155 155 150 155 150 155 1825 VECTOR WIND DIRECTION (MEAN) 187 205 166 239 220 175 181 242 208 211 203 154 202 VECTOR WIND MAGNITUDE(KNOTS) 1.0 1.0 1.1 2.2 2.5 1.6 1.5 0.1 1.6 1.3 0.9 0.8 1.2 WIND STEADINESES (MEAN %) 62.5 47.6 44.0 68.7 67.6 45.7 34.9 3.3 53.3 52.0 56.3 66.7 44.4 WIND SPEED (MEAN KNOTS) 1.6 2.1 2.5 3.2 3.7 3.5 4.3 3.0 3.0 2.5 1.6 1.2 2.7 FASTEST WIND DIRECTION 160 210 150 270 190 240 90 205 210 250 130 120 210 FASTEST WIND SPEED (KNOTS) 19 29 21 25 29 27 19 21 23 29 19 19 29 DAY 27 21 25 22 6 16 1 12 22 20 18 5 DAYS WITH SKY CLEAR (0-2)/8 22 18 18 18 25 27 27 30 30 27 22 10 274 DAYS WITH P.CLOUDY (3-6)/8 6 9 10 12 6 3 4 1 0 4 8 10 73 DAYS WITH CLOUDY (7-8)/8 3 1 3 0 0 0 0 0 0 0 0 11 18 DAYS WITH VISIBILITY =< 2 KM 2 0 0 0 0 0 0 0 0 0 0 3 5 DURATION OF SUNSHINE HOURS 249.1 236.3 277.0 300.4 343.1 356.8 352.4 348.3 311.6 308.2 247.3 160.6 3491.1 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ZARGHAN (40847) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 29 47 N LONGITUDE 52 43 E DATA PROCESSING CENTER ELEVATION 1596.0 M MEANS AND EXTREMES FOR THE YEAR 2001 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL MEAN QFE PRESSURE IN HPA 842.1 841.3 840.5 840.7 838.2 834.4 834.0 837.7 839.9 843.2 844.2 845.6 840.1 MAX. QFE PRESSURE IN HPA 847.4 847.3 848.3 847.2 843.5 840.9 839.7 842.4 845.7 847.5 849.3 851.0 851.0 DAY-HOUR 15- 6 28- 6 2- 6 1- 6 13- 6 3- 6 29- 6 14- 6 23- 6 28- 6 5- 6 9- 6 MIN. QFE PRESSURE IN HPA 835.1 834.0 830.9 835.9 831.6 829.0 829.3 833.5 835.1 838.4 837.4 838.5 829.0 DAY-HOUR 27-15 21-15 25-15 10-12 25-12 11-15 12-15 28-15 5-15 2-12 17-12 5-12 MEAN QNH PRESSURE IN HPA 1020.5 1019.5 1018.6 1018.9 1016.0 1011.5 1011.0 1015.3 1018.0 1021.7 1022.9 1024.6 1018.2 MAX. QNH PRESSURE IN HPA 1026.7 1026.6 1027.8 1026.5 1022.2 1019.1 1017.7 1020.9 1024.7 1026.8 1028.9 1030.9 1030.9 DAY-HOUR 15- 6 28- 6 2- 6 1- 6 13- 6 3- 6 29- 6 14- 6 23- 6 28- 6 5- 6 9- 6 MIN. QNH PRESSURE IN HPA 1012.3 1011.1 1007.4 1013.3 1008.2 1005.2 1005.6 1010.5 1012.3 1016.2 1015.0 1016.3 1005.2 DAY-HOUR 27-15 21-15 25-15 10-12 25-12 11-15 12-15 28-15 5-15 2-12 17-12 5-12 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY-HOUR **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY-HOUR **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** PRESSURE AT HOUR 0000 UTC. MEAN QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** PRESSURE AT HOUR 0300 UTC. MEAN QFE PRESSURE IN HPA 842.4 841.7 841.1 841.3 838.9 835.3 834.9 838.6 840.6 843.8 844.5 845.6 840.7 MAX. QFE PRESSURE IN HPA 846.5 845.6 847.4 845.9 842.2 839.9 839.1 841.8 845.0 846.4 848.2 849.6 849.6 DAY 16 28 2 1 13 3 29 15 23 11 5 9 MIN. QFE PRESSURE IN HPA 836.7 837.1 833.7 837.3 833.7 832.0 832.0 835.3 837.5 840.2 839.6 840.7 832.0 DAY 27 21 26 10 26 12 12 28 2 1 12 5 MEAN QNH PRESSURE IN HPA 1020.8 1020.0 1019.3 1019.5 1016.8 1012.6 1012.1 1016.5 1018.8 1022.5 1023.4 1024.7 1018.9 MAX. QNH PRESSURE IN HPA 1025.7 1024.6 1026.7 1025.0 1020.6 1017.9 1017.0 1020.2 1023.9 1025.5 1027.6 1029.3 1029.3 DAY 16 28 2 1 13 3 29 15 23 11 5 9 MIN. QNH PRESSURE IN HPA 1014.2 1014.7 1010.7 1014.9 1010.7 1008.7 1008.7 1012.6 1015.1 1018.3 1017.6 1018.9 1008.7 DAY 27 21 26 10 26 12 12 28 2 1 12 5 MEAN QFF PRESSURE IN HPA 1022.0 1019.9 1015.5 1012.7 1005.9 999.1 996.7 1002.5 1007.3 1014.6 1021.0 1022.2 1011.6 MAX. QFF PRESSURE IN HPA 1029.1 1025.0 1024.2 1018.3 1012.4 1005.4 1003.4 1007.4 1015.0 1017.9 1027.6 1029.2 1029.2 DAY 29 1 2 5 12 2 28 15 23 11 21 18 MIN. QFF PRESSURE IN HPA 1012.6 1009.6 1006.5 1008.0 998.2 995.6 991.7 998.5 1001.8 1008.2 1013.6 1014.0 991.7 DAY 27 21 25 26 26 29 5 28 1 1 12 5 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ZARGHAN (40847) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 29 47 N LONGITUDE 52 43 E DATA PROCESSING CENTER ELEVATION 1596.0 M MEANS AND EXTREMES FOR THE YEAR 2001 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 0600 UTC. MEAN QFE PRESSURE IN HPA 843.6 842.7 842.2 842.1 839.6 835.8 835.4 839.3 841.6 844.9 845.8 847.0 841.7 MAX. QFE PRESSURE IN HPA 847.4 847.3 848.3 847.2 843.5 840.9 839.7 842.4 845.7 847.5 849.3 851.0 851.0 DAY 15 28 2 1 13 3 29 14 23 28 5 9 MIN. QFE PRESSURE IN HPA 837.4 837.1 834.9 838.3 834.0 832.4 831.8 836.5 838.2 841.2 841.1 841.8 831.8 DAY 27 21 26 10 26 11 12 28 2 2 18 5 MEAN QNH PRESSURE IN HPA 1022.3 1021.3 1020.6 1020.6 1017.6 1013.2 1012.6 1017.3 1019.9 1023.8 1024.8 1026.2 1020.0 MAX. QNH PRESSURE IN HPA 1026.7 1026.6 1027.8 1026.5 1022.2 1019.1 1017.7 1020.9 1024.7 1026.8 1028.9 1030.9 1030.9 DAY 15 28 2 1 13 3 29 14 23 28 5 9 MIN. QNH PRESSURE IN HPA 1015.0 1014.7 1012.1 1016.1 1011.1 1009.2 1008.5 1014.0 1016.0 1019.5 1019.3 1020.2 1008.5 DAY 27 21 26 10 26 11 12 28 2 2 18 5 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** PRESSURE AT HOUR 0900 UTC. MEAN QFE PRESSURE IN HPA 842.5 841.8 841.0 841.1 838.6 834.7 834.4 838.2 840.3 843.5 844.3 845.8 840.5 MAX. QFE PRESSURE IN HPA 846.4 846.3 846.8 846.8 842.3 840.0 838.6 841.0 844.6 846.2 848.0 850.0 850.0 DAY 14 28 1 1 11 3 27 14 23 10 5 9 MIN. QFE PRESSURE IN HPA 837.0 834.6 833.8 837.5 832.9 831.4 831.2 835.7 837.2 839.8 839.2 840.0 831.2 DAY 27 21 25 13 26 11 12 28 2 2 18 5 MEAN QNH PRESSURE IN HPA 1021.0 1020.1 1019.2 1019.4 1016.4 1011.9 1011.5 1016.0 1018.4 1022.1 1023.1 1024.9 1018.7 MAX. QNH PRESSURE IN HPA 1025.5 1025.4 1026.0 1026.0 1020.8 1018.1 1016.4 1019.2 1023.4 1025.3 1027.4 1029.8 1029.8 DAY 14 28 1 1 11 3 27 14 23 10 5 9 MIN. QNH PRESSURE IN HPA 1014.6 1011.8 1010.8 1015.1 1009.8 1008.0 1007.8 1013.0 1014.8 1017.8 1017.1 1018.1 1007.8 DAY 27 21 25 13 26 11 12 28 2 2 18 5 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** PRESSURE AT HOUR 1200 UTC. MEAN QFE PRESSURE IN HPA 841.0 840.0 839.1 839.5 837.2 833.3 832.9 836.4 838.7 841.8 842.9 844.4 838.9 MAX. QFE PRESSURE IN HPA 844.7 843.9 845.1 844.3 841.0 838.2 837.1 839.5 842.6 844.6 846.1 848.0 848.0 DAY 14 9 1 1 11 3 29 14 22 10 14 9 MIN. QFE PRESSURE IN HPA 835.4 834.3 831.3 835.9 831.6 829.5 829.5 833.9 835.4 838.4 837.4 838.5 829.5 DAY 27 21 25 10 25 11 12 28 2 2 17 5 MEAN QNH PRESSURE IN HPA 1019.3 1018.0 1017.0 1017.5 1014.8 1010.2 1009.8 1013.9 1016.5 1020.1 1021.4 1023.2 1016.8 MAX. QNH PRESSURE IN HPA 1023.6 1022.6 1024.0 1023.1 1019.2 1016.0 1014.7 1017.5 1021.1 1023.4 1025.2 1027.4 1027.4 DAY 14 9 1 1 11 3 29 14 22 10 14 9 MIN. QNH PRESSURE IN HPA 1012.7 1011.4 1007.9 1013.3 1008.2 1005.8 1005.8 1010.9 1012.7 1016.2 1015.0 1016.3 1005.8 DAY 27 21 25 10 25 11 12 28 2 2 17 5 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ZARGHAN (40847) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 29 47 N LONGITUDE 52 43 E DATA PROCESSING CENTER ELEVATION 1596.0 M MEANS AND EXTREMES FOR THE YEAR 2001 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 1500 UTC. MEAN QFE PRESSURE IN HPA 841.2 840.1 839.2 839.6 836.9 832.8 832.5 835.8 838.5 841.9 843.3 845.2 838.9 MAX. QFE PRESSURE IN HPA 845.0 844.5 844.8 844.2 841.0 837.3 836.7 838.3 843.7 844.3 846.3 850.5 850.5 DAY 15 10 1 4 11 3 27 14 22 23 14 8 MIN. QFE PRESSURE IN HPA 835.1 834.0 830.9 836.2 831.9 829.0 829.3 833.5 835.1 838.5 838.6 839.0 829.0 DAY 27 21 25 13 25 11 12 28 5 3 17 5 MEAN QNH PRESSURE IN HPA 1019.4 1018.2 1017.1 1017.6 1014.5 1009.6 1009.3 1013.2 1016.3 1020.3 1022.0 1024.1 1016.8 MAX. QNH PRESSURE IN HPA 1023.9 1023.3 1023.7 1023.0 1019.2 1014.9 1014.2 1016.1 1022.4 1023.1 1025.4 1030.3 1030.3 DAY 15 10 1 4 11 3 27 14 22 23 14 8 MIN. QNH PRESSURE IN HPA 1012.3 1011.1 1007.4 1013.6 1008.6 1005.2 1005.6 1010.5 1012.3 1016.3 1016.4 1016.9 1005.2 DAY 27 21 25 13 25 11 12 28 5 3 17 5 MEAN QFF PRESSURE IN HPA 1020.5 1017.9 1013.1 1010.7 1003.5 996.1 993.9 999.2 1004.9 1012.4 1019.6 1021.5 1009.4 MAX. QFF PRESSURE IN HPA 1027.8 1023.0 1020.9 1016.6 1009.9 1001.8 1000.7 1002.6 1013.0 1015.7 1025.8 1027.4 1027.8 DAY 29 10 1 5 11 1 31 14 22 23 20 18 MIN. QFF PRESSURE IN HPA 1012.3 1007.4 1001.7 1006.9 996.6 992.6 989.3 996.0 999.3 1006.7 1013.5 1011.6 989.3 DAY 27 21 25 19 26 28 12 28 5 2 18 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 ZARGHAN (40847) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 29 47 N LONGITUDE 52 43 E DATA PROCESSING CENTER ELEVATION 1596.0 M MEANS AND EXTREMES FOR THE YEAR 2002 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AIR TEMPERATURE (C) 5.8 8.4 13.2 16.5 24.0 28.7 31.1 30.3 26.8 20.8 12.6 7.7 18.8 MINIMUN AIR TEMPERATURE (C) -0.8 -0.1 4.1 7.2 10.2 14.4 18.1 17.2 13.5 8.2 2.5 0.4 7.9 DAYS WITH MINIMUM TEMP. >=21 0 0 0 0 0 0 1 1 0 0 0 0 2 DAYS WITH MINIMUM TEMP. <=-4 5 7 0 0 0 0 0 0 0 0 0 7 19 DAYS WITH FREEZING MIN.<= 0 20 16 0 0 0 0 0 0 0 0 11 16 63 TEMPERATURE RECORDS LOWEST(C) -6.2 -5.4 0.4 2.0 3.4 11.6 15.4 14.4 9.4 3.0 -3.4 -6.8 -6.8 DAY 26 6 24 23 7 8 2 31 30 25 24 23 MAXIMUM AIR TEMPERATURE (C) 10.8 14.8 19.2 22.1 30.8 35.1 37.4 37.4 34.3 28.6 19.5 13.3 25.3 DAYS WITH MAXIMUM TEMP. >=30 0 0 0 2 20 30 31 31 30 11 0 0 155 DAYS WITH MAXIMUM TEMP. <= 0 0 0 0 0 0 0 0 0 0 0 0 0 0 TEMPERATURE RECORDS HIGHEST(C) 14.6 19.2 23.2 30.6 34.2 37.2 40.0 39.0 36.6 32.0 25.6 16.6 40.0 DAY 1 24 26 28 20 17 20 9 3 7 12 6 DIF. BETWEEN (MAX.-MIN.) (C) 11.6 14.9 15.1 14.9 20.6 20.7 19.3 20.2 20.8 20.4 17.0 12.9 17.4 MEAN DAILY TEMP. (MDT) (C) 5.0 7.3 11.6 14.6 20.5 24.8 27.7 27.3 23.9 18.4 11.0 6.9 16.6 COOLING DEG. DAYS(BASE 21 0C) 0.0 0.0 0.0 0.0 21.2 113.6 208.6 194.5 87.8 1.8 0.0 0.0 627.7 HEATING DEG. DAYS(BASE 18 0C) 403.3 298.3 197.1 108.7 6.3 0.0 0.0 0.0 0.0 25.2 209.9 344.8 1593.6 DEWPOINT (MEAN C) -2.1 -2.7 0.6 4.4 1.6 -0.5 1.3 1.4 1.1 -2.4 -1.8 -0.9 -0.0 MIXING RATIO (G/KG) 4.11 4.08 4.98 6.49 5.35 4.60 5.16 5.21 5.06 3.90 4.19 4.47 4.80 VAPOUR PRESSURE (HPA) 5.52 5.48 6.68 8.67 7.16 6.14 6.88 6.94 6.78 5.25 5.64 6.00 6.43 SATURATION DEF. (HPA) 4.01 6.19 9.30 11.43 24.86 35.52 40.79 39.02 31.10 21.37 9.92 5.05 19.88 RELATIVE HUMIDITY (MEAN %) 61 52 47 50 28 19 17 19 22 24 41 58 37 RELATIVE HUMIDITY (MAX. %) 82 79 76 78 55 42 36 38 45 47 68 82 61 RELATIVE HUMIDITY (MIN. %) 42 32 28 32 14 9 9 9 11 12 24 38 22 RELATIVE HUMIDITY (MEAN% 03UTC) 79 78 75 77 55 41 36 38 45 47 66 81 60 RELATIVE HUMIDITY (MEAN% 09UTC) 52 41 35 39 18 10 11 12 13 15 31 46 27 RELATIVE HUMIDITY (MEAN% 15UTC) 58 45 40 43 20 13 12 12 16 19 35 54 31 RH=0 => RELATIVE HUMIDITY < 0.5% AMOUNT OF PRECIPITATION MM. 157.4 64.0 25.3 59.0 0.5 1.0 0.0 0.0 0.0 0.0 3.7 25.2 336.1 DAYS WITH PRECIPITATION >=10 3 3 0 2 0 0 0 0 0 0 0 0 8 DAYS WITH PRECIPITATION >= 5 3 4 3 2 0 0 0 0 0 0 0 3 15 DAYS WITH PRECIPITATION >= 1 5 7 5 3 0 1 0 0 0 0 1 5 27 DAYS WITH PRECIPITATION 9 7 6 6 3 1 0 0 0 0 4 8 44 GREATEST DAILY PRECIPITATION 69.0 20.0 8.0 37.0 0.5 1.0 0.0 0.0 0.0 0.0 2.0 7.1 69.0 DAY 11 15 19 3 3 27 ** ** ** ** 14 10 DAY WITH THUNDER STORM 1 0 0 2 0 0 0 0 0 0 0 0 3 DAYS WITH SNOW OR SLEET 1 0 0 0 0 0 0 0 0 0 0 0 1 DAYS WITH DUST 0 0 1 4 0 0 0 0 0 0 1 0 6 WIND DIRECTION (PREVAILING) 270 270 180 315 315 180 315 270 90 315 270 225 315 PREVAILING WIND SPEED(KNOTS) 8.4 8.5 9.9 10.1 10.5 9.4 12.1 8.0 6.2 7.9 9.9 9.7 9.6 PREVAILING WIND PERCENT 6.5 7.9 11.0 11.3 21.9 14.0 12.9 6.5 6.0 5.2 6.7 9.0 7.4 CALMS PERCENT OF WIND 83.2 80.0 67.7 58.0 60.0 49.3 52.9 62.6 70.0 77.4 70.7 76.8 67.3 NO. OF WIND OBSERVATION 155 140 155 150 155 150 155 155 150 155 150 155 1825 VECTOR WIND DIRECTION (MEAN) 230 237 219 261 289 231 268 272 149 246 238 253 252 VECTOR WIND MAGNITUDE(KNOTS) 0.7 1.0 1.4 2.2 2.9 2.2 1.4 0.6 0.3 0.2 1.0 1.4 1.1 WIND STEADINESES (MEAN %) 50.0 58.8 51.9 51.2 70.7 45.8 31.8 23.1 14.3 13.3 41.7 73.7 39.3 WIND SPEED (MEAN KNOTS) 1.4 1.7 2.7 4.3 4.1 4.8 4.4 2.6 2.1 1.5 2.4 1.9 2.8 FASTEST WIND DIRECTION 190 160 240 190 280 330 290 330 180 330 270 290 190 FASTEST WIND SPEED (KNOTS) 14 23 19 49 29 29 29 19 16 19 29 27 49 DAY 7 20 26 20 4 6 25 28 19 23 26 22 DAYS WITH SKY CLEAR (0-2)/8 20 17 15 14 25 29 29 28 29 29 21 18 274 DAYS WITH P.CLOUDY (3-6)/8 5 6 12 11 5 1 2 3 1 2 8 11 67 DAYS WITH CLOUDY (7-8)/8 6 5 4 5 1 0 0 0 0 0 1 2 24 DAYS WITH VISIBILITY =< 2 KM 0 0 0 0 0 0 0 0 0 0 0 2 2 DURATION OF SUNSHINE HOURS 233.0 216.5 257.6 263.9 345.0 361.6 356.7 340.3 314.7 304.7 245.1 227.3 3466.4 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ZARGHAN (40847) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 29 47 N LONGITUDE 52 43 E DATA PROCESSING CENTER ELEVATION 1596.0 M MEANS AND EXTREMES FOR THE YEAR 2002 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL MEAN QFE PRESSURE IN HPA 842.7 843.0 841.6 840.1 839.5 836.6 836.0 835.9 840.7 843.6 843.8 842.6 840.5 MAX. QFE PRESSURE IN HPA 848.8 850.3 850.8 846.6 844.1 841.6 840.3 840.7 845.8 848.3 849.3 849.5 850.8 DAY-HOUR 26- 6 6- 6 11- 6 1- 6 10- 6 3- 6 31- 6 29- 6 21- 6 10- 6 18- 6 30- 6 MIN. QFE PRESSURE IN HPA 836.3 836.7 836.8 833.2 836.5 831.6 831.9 832.0 836.2 840.0 839.1 836.0 831.6 DAY-HOUR 21-15 20-12 22-12 3-15 20-15 21-15 22-15 17-12 10-12 29-15 6-12 22- 9 MEAN QNH PRESSURE IN HPA 1021.2 1021.5 1019.9 1018.2 1017.5 1014.1 1013.4 1013.3 1018.8 1022.2 1022.5 1021.1 1018.6 MAX. QNH PRESSURE IN HPA 1028.3 1030.1 1030.7 1025.8 1022.9 1019.9 1018.4 1018.9 1024.8 1027.8 1028.9 1029.2 1030.7 DAY-HOUR 26- 6 6- 6 11- 6 1- 6 10- 6 3- 6 31- 6 29- 6 21- 6 10- 6 18- 6 30- 6 MIN. QNH PRESSURE IN HPA 1013.7 1014.2 1014.3 1010.1 1014.0 1008.2 1008.6 1008.7 1013.6 1018.1 1017.0 1013.4 1008.2 DAY-HOUR 21-15 20-12 22-12 3-15 20-15 21-15 22-15 17-12 10-12 29-15 6-12 22- 9 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY-HOUR **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY-HOUR **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** PRESSURE AT HOUR 0000 UTC. MEAN QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** PRESSURE AT HOUR 0300 UTC. MEAN QFE PRESSURE IN HPA 842.8 843.3 841.9 840.4 840.0 837.3 836.5 836.6 841.3 844.1 844.2 842.7 840.9 MAX. QFE PRESSURE IN HPA 847.1 848.9 849.0 845.5 843.9 841.0 839.5 840.0 844.8 847.5 847.7 847.6 849.0 DAY 27 6 11 2 10 6 31 30 21 11 19 14 MIN. QFE PRESSURE IN HPA 837.2 840.1 838.2 834.2 837.1 833.1 834.0 833.6 838.2 842.1 840.0 836.8 833.1 DAY 22 4 18 4 13 22 22 17 10 14 7 22 MEAN QNH PRESSURE IN HPA 1021.4 1022.0 1020.3 1018.5 1018.0 1014.9 1014.0 1014.1 1019.6 1022.9 1023.0 1021.2 1019.2 MAX. QNH PRESSURE IN HPA 1026.4 1028.5 1028.6 1024.5 1022.6 1019.2 1017.5 1018.1 1023.7 1026.8 1027.1 1026.9 1028.6 DAY 27 6 11 2 10 6 31 30 21 11 19 14 MIN. QNH PRESSURE IN HPA 1014.8 1018.2 1016.0 1011.3 1014.7 1010.0 1011.1 1010.6 1016.0 1020.5 1018.1 1014.3 1010.0 DAY 22 4 18 4 13 22 22 17 10 14 7 22 MEAN QFF PRESSURE IN HPA 1022.0 1021.3 1016.4 1012.4 1008.1 1001.9 999.3 1000.0 1008.0 1015.4 1020.0 1020.7 1012.1 MAX. QFF PRESSURE IN HPA 1030.3 1031.9 1026.2 1020.4 1012.9 1006.6 1004.3 1005.7 1013.3 1019.9 1025.9 1028.8 1031.9 DAY 25 6 11 1 10 7 31 30 30 27 30 30 MIN. QFF PRESSURE IN HPA 1012.6 1013.1 1009.2 1007.2 1003.3 997.6 995.7 995.9 1004.0 1012.3 1013.2 1011.4 995.7 DAY 11 25 28 11 13 20 23 8 6 14 13 22 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ZARGHAN (40847) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 29 47 N LONGITUDE 52 43 E DATA PROCESSING CENTER ELEVATION 1596.0 M MEANS AND EXTREMES FOR THE YEAR 2002 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 0600 UTC. MEAN QFE PRESSURE IN HPA 844.0 844.5 843.0 841.3 840.7 837.8 837.2 837.4 842.2 845.3 845.5 844.1 841.9 MAX. QFE PRESSURE IN HPA 848.8 850.3 850.8 846.6 844.1 841.6 840.3 840.7 845.8 848.3 849.3 849.5 850.8 DAY 26 6 11 1 10 3 31 29 21 10 18 30 MIN. QFE PRESSURE IN HPA 838.2 840.4 838.7 835.0 837.9 833.7 834.6 834.4 838.8 843.0 841.4 837.3 833.7 DAY 22 20 18 4 21 22 22 17 18 14 7 22 MEAN QNH PRESSURE IN HPA 1022.8 1023.3 1021.5 1019.6 1018.8 1015.5 1014.8 1015.1 1020.7 1024.2 1024.4 1022.9 1020.3 MAX. QNH PRESSURE IN HPA 1028.3 1030.1 1030.7 1025.8 1022.9 1019.9 1018.4 1018.9 1024.8 1027.8 1028.9 1029.2 1030.7 DAY 26 6 11 1 10 3 31 29 21 10 18 30 MIN. QNH PRESSURE IN HPA 1016.0 1018.5 1016.5 1012.2 1015.6 1010.7 1011.8 1011.5 1016.7 1021.6 1019.7 1014.9 1010.7 DAY 22 20 18 4 21 22 22 17 18 14 7 22 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** PRESSURE AT HOUR 0900 UTC. MEAN QFE PRESSURE IN HPA 843.1 843.5 842.1 840.5 839.8 837.0 836.4 836.4 841.2 844.0 844.3 842.9 840.9 MAX. QFE PRESSURE IN HPA 848.4 849.7 850.0 846.3 843.1 840.7 838.9 839.6 844.7 846.9 848.5 848.6 850.0 DAY 26 6 11 1 10 5 3 29 21 10 18 30 MIN. QFE PRESSURE IN HPA 837.8 838.2 837.7 834.3 836.9 833.1 833.8 833.9 838.0 841.7 840.9 836.0 833.1 DAY 22 20 18 4 4 22 23 17 10 14 26 22 MEAN QNH PRESSURE IN HPA 1021.6 1022.2 1020.5 1018.7 1017.8 1014.5 1013.9 1013.9 1019.5 1022.7 1023.1 1021.4 1019.2 MAX. QNH PRESSURE IN HPA 1027.9 1029.4 1029.8 1025.4 1021.7 1018.9 1016.8 1017.6 1023.6 1026.1 1028.0 1028.1 1029.8 DAY 26 6 11 1 10 5 3 29 21 10 18 30 MIN. QNH PRESSURE IN HPA 1015.5 1016.0 1015.4 1011.4 1014.4 1010.0 1010.8 1010.9 1015.7 1020.1 1019.1 1013.4 1010.0 DAY 22 20 18 4 4 22 23 17 10 14 26 22 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** PRESSURE AT HOUR 1200 UTC. MEAN QFE PRESSURE IN HPA 841.7 841.7 840.5 839.2 838.7 835.6 835.2 834.8 839.5 842.3 842.6 841.5 839.4 MAX. QFE PRESSURE IN HPA 846.6 847.0 847.7 844.3 841.6 839.2 837.9 838.2 843.3 845.3 846.7 846.6 847.7 DAY 26 6 11 1 10 5 3 29 21 10 18 30 MIN. QFE PRESSURE IN HPA 836.8 836.7 836.8 833.7 836.6 832.0 832.4 832.0 836.2 840.2 839.1 836.9 832.0 DAY 21 20 22 3 13 21 22 17 10 14 6 21 MEAN QNH PRESSURE IN HPA 1020.0 1020.0 1018.7 1017.1 1016.5 1013.0 1012.4 1012.0 1017.4 1020.7 1021.1 1019.8 1017.4 MAX. QNH PRESSURE IN HPA 1025.8 1026.2 1027.1 1023.1 1019.9 1017.1 1015.6 1016.0 1021.9 1024.3 1025.9 1025.8 1027.1 DAY 26 6 11 1 10 5 3 29 21 10 18 30 MIN. QNH PRESSURE IN HPA 1014.3 1014.2 1014.3 1010.7 1014.1 1008.7 1009.2 1008.7 1013.6 1018.3 1017.0 1014.4 1008.7 DAY 21 20 22 3 13 21 22 17 10 14 6 21 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ZARGHAN (40847) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 29 47 N LONGITUDE 52 43 E DATA PROCESSING CENTER ELEVATION 1596.0 M MEANS AND EXTREMES FOR THE YEAR 2002 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 1500 UTC. MEAN QFE PRESSURE IN HPA 842.0 841.9 840.4 839.2 838.4 835.2 834.6 834.4 839.2 842.2 842.7 841.7 839.3 MAX. QFE PRESSURE IN HPA 846.8 846.6 847.4 844.5 841.3 839.0 837.4 838.0 842.5 845.3 847.2 846.7 847.4 DAY 26 1 11 1 10 3 29 29 21 10 18 14 MIN. QFE PRESSURE IN HPA 836.3 838.5 836.9 833.2 836.5 831.6 831.9 832.1 836.2 840.0 839.5 837.0 831.6 DAY 21 20 28 3 20 21 22 6 10 29 6 21 MEAN QNH PRESSURE IN HPA 1020.4 1020.3 1018.6 1017.2 1016.2 1012.5 1011.8 1011.5 1017.1 1020.7 1021.2 1020.0 1017.3 MAX. QNH PRESSURE IN HPA 1026.0 1025.8 1026.7 1023.3 1019.6 1016.9 1015.0 1015.7 1021.0 1024.3 1026.5 1025.9 1026.7 DAY 26 1 11 1 10 3 29 29 21 10 18 14 MIN. QNH PRESSURE IN HPA 1013.7 1016.3 1014.4 1010.1 1014.0 1008.2 1008.6 1008.8 1013.6 1018.1 1017.5 1014.6 1008.2 DAY 21 20 28 3 20 21 22 6 10 29 6 21 MEAN QFF PRESSURE IN HPA 1021.0 1019.5 1014.5 1010.9 1006.2 999.6 997.2 997.5 1005.5 1013.2 1018.3 1019.4 1010.2 MAX. QFF PRESSURE IN HPA 1029.6 1028.2 1024.7 1018.4 1010.4 1004.9 1002.0 1003.3 1010.8 1017.3 1023.8 1028.3 1029.6 DAY 26 5 11 1 9 3 29 29 30 25 18 30 MIN. QFF PRESSURE IN HPA 1012.1 1014.0 1007.6 1003.9 1001.8 995.5 993.9 993.3 1001.5 1010.4 1012.1 1013.3 993.3 DAY 8 25 28 3 20 22 23 9 10 12 6 21 PRESSURE AT HOUR 1800 UTC. MEAN QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** PRESSURE AT HOUR 2100 UTC. MEAN QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ZARGHAN (40847) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 29 47 N LONGITUDE 52 43 E DATA PROCESSING CENTER ELEVATION 1596.0 M MEANS AND EXTREMES FOR THE YEAR 2003 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AIR TEMPERATURE (C) 5.2 8.6 11.7 17.9 22.9 29.4 32.7 30.4 26.8 20.8 12.9 8.8 19.0 MINIMUN AIR TEMPERATURE (C) -1.4 1.2 3.2 7.3 10.3 14.9 20.2 17.6 13.9 8.4 2.0 1.6 8.3 DAYS WITH MINIMUM TEMP. >=21 0 0 0 0 0 0 12 4 0 0 0 0 16 DAYS WITH MINIMUM TEMP. <=-4 4 0 2 0 0 0 0 0 0 0 1 0 7 DAYS WITH FREEZING MIN.<= 0 23 10 4 0 0 0 0 0 0 0 10 13 60 TEMPERATURE RECORDS LOWEST(C) -5.4 -3.6 -4.2 2.8 2.6 11.6 14.4 14.4 10.4 5.0 -4.0 -3.0 -5.4 DAY 18 6 2 30 1 8 3 30 29 27 18 15 MAXIMUM AIR TEMPERATURE (C) 10.9 14.1 17.5 23.9 29.0 36.1 38.9 37.2 33.8 28.3 20.1 14.2 25.3 DAYS WITH MAXIMUM TEMP. >=30 0 0 0 0 11 30 31 31 30 5 0 0 138 DAYS WITH MAXIMUM TEMP. <= 0 0 0 0 0 0 0 0 0 0 0 0 0 0 TEMPERATURE RECORDS HIGHEST(C) 16.6 19.0 21.5 28.5 32.2 39.6 40.5 40.0 36.0 32.0 26.8 19.6 40.5 DAY 15 23 25 10 31 24 10 1 2 1 1 19 DIF. BETWEEN (MAX.-MIN.) (C) 12.3 12.9 14.3 16.6 18.7 21.2 18.7 19.6 19.9 19.9 18.1 12.6 17.0 MEAN DAILY TEMP. (MDT) (C) 4.7 7.7 10.4 15.6 19.6 25.5 29.6 27.4 23.9 18.3 11.0 7.9 16.8 COOLING DEG. DAYS(BASE 21 0C) 0.0 0.0 0.0 0.0 7.8 134.0 265.1 197.2 86.4 2.0 0.0 0.0 692.7 HEATING DEG. DAYS(BASE 18 0C) 410.8 289.7 235.9 73.7 12.3 0.0 0.0 0.0 0.0 15.1 208.5 313.6 1559.6 DEWPOINT (MEAN C) -1.6 -0.5 1.0 4.3 1.4 -0.4 2.6 2.6 0.3 -2.0 -5.1 0.9 0.3 MIXING RATIO (G/KG) 4.18 4.64 5.22 6.42 5.17 4.63 5.72 5.85 4.72 3.99 3.32 4.99 4.90 VAPOUR PRESSURE (HPA) 5.62 6.23 6.98 8.59 6.93 6.18 7.59 7.78 6.32 5.38 4.48 6.71 6.57 SATURATION DEF. (HPA) 3.74 5.47 7.58 13.16 22.55 37.53 44.24 38.34 31.35 21.04 11.63 5.13 20.15 RELATIVE HUMIDITY (MEAN %) 67 58 53 47 28 18 17 20 20 25 33 61 37 RELATIVE HUMIDITY (MAX. %) 89 83 81 79 57 41 34 43 40 50 57 84 62 RELATIVE HUMIDITY (MIN. %) 47 39 34 29 15 9 10 10 11 12 18 43 23 RELATIVE HUMIDITY (MEAN% 03UTC) 86 82 80 78 57 41 34 43 40 50 56 82 61 RELATIVE HUMIDITY (MEAN% 09UTC) 58 48 43 37 18 10 11 13 13 15 22 50 28 RELATIVE HUMIDITY (MEAN% 15UTC) 65 50 43 36 23 13 13 14 15 20 29 58 32 RH=0 => RELATIVE HUMIDITY < 0.5% AMOUNT OF PRECIPITATION MM. 80.6 70.2 96.5 14.7 0.1 0.0 0.0 0.0 0.0 0.0 0.1 50.5 312.7 DAYS WITH PRECIPITATION >=10 4 1 3 1 0 0 0 0 0 0 0 1 10 DAYS WITH PRECIPITATION >= 5 6 4 6 1 0 0 0 0 0 0 0 2 19 DAYS WITH PRECIPITATION >= 1 9 6 8 2 0 0 0 0 0 0 0 3 28 DAYS WITH PRECIPITATION 12 7 12 4 1 0 0 0 0 0 1 6 43 GREATEST DAILY PRECIPITATION 18.0 42.0 36.0 11.0 0.1 0.0 0.0 0.0 0.0 0.0 0.1 44.0 44.0 DAY 23 5 26 14 8 ** ** ** ** ** 30 6 DAY WITH THUNDER STORM 0 0 1 0 0 0 0 0 0 0 0 1 2 DAYS WITH SNOW OR SLEET 5 0 0 0 0 0 0 0 0 0 0 0 5 DAYS WITH DUST 0 0 1 0 1 2 0 0 0 1 0 0 5 WIND DIRECTION (PREVAILING) 180 270 270 270 315 315 225 45 315 225 315 225 315 PREVAILING WIND SPEED(KNOTS) 9.8 10.4 9.4 10.8 9.5 8.1 9.3 7.1 9.4 9.0 9.5 8.7 9.0 PREVAILING WIND PERCENT 5.2 12.9 9.7 8.7 18.7 14.7 9.0 4.5 7.3 7.7 8.0 5.8 7.5 CALMS PERCENT OF WIND 85.2 66.4 63.9 66.0 57.4 59.3 63.2 79.4 68.7 69.7 78.7 84.5 70.2 NO. OF WIND OBSERVATION 155 140 155 150 155 150 155 155 150 155 150 155 1825 VECTOR WIND DIRECTION (MEAN) 241 249 228 247 300 269 239 274 247 277 283 224 257 VECTOR WIND MAGNITUDE(KNOTS) 0.6 2.1 2.0 1.6 2.3 2.0 1.5 0.3 0.8 1.2 0.7 0.8 1.2 WIND STEADINESES (MEAN %) 46.2 65.6 57.1 57.1 63.9 54.1 48.4 17.6 33.3 46.2 41.2 57.1 46.2 WIND SPEED (MEAN KNOTS) 1.3 3.2 3.5 2.8 3.6 3.7 3.1 1.7 2.4 2.6 1.7 1.4 2.6 FASTEST WIND DIRECTION 210 270 160 240 300 180 320 210 330 250 290 180 160 FASTEST WIND SPEED (KNOTS) 19 27 35 23 23 25 19 23 19 19 19 23 35 DAY 16 26 26 1 8 30 8 17 30 26 13 6 DAYS WITH SKY CLEAR (0-2)/8 16 18 16 16 22 29 28 29 30 30 20 21 275 DAYS WITH P.CLOUDY (3-6)/8 8 5 10 9 9 1 3 2 0 1 9 7 64 DAYS WITH CLOUDY (7-8)/8 7 5 5 5 0 0 0 0 0 0 1 3 26 DAYS WITH VISIBILITY =< 2 KM 5 2 1 0 0 0 0 0 0 0 0 0 8 DURATION OF SUNSHINE HOURS 194.0 211.4 236.3 256.6 332.3 351.5 331.6 337.5 321.5 307.3 255.2 211.5 3346.7 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ZARGHAN (40847) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 29 47 N LONGITUDE 52 43 E DATA PROCESSING CENTER ELEVATION 1596.0 M MEANS AND EXTREMES FOR THE YEAR 2003 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL MEAN QFE PRESSURE IN HPA 843.0 840.6 840.7 841.5 840.3 835.9 833.3 836.7 839.4 843.7 843.9 844.4 840.3 MAX. QFE PRESSURE IN HPA 850.4 847.3 848.2 848.8 846.0 842.6 839.5 840.8 844.4 848.2 852.0 849.1 852.0 DAY-HOUR 7- 6 6- 6 3- 6 8- 6 11- 6 2- 6 3- 6 12- 6 27- 6 30- 6 25- 6 14- 6 MIN. QFE PRESSURE IN HPA 834.3 833.0 834.3 837.5 836.2 829.0 828.4 831.7 834.1 838.8 838.4 836.5 828.4 DAY-HOUR 28-15 17-12 26-12 17-12 29-12 30-15 25-15 1-15 7-12 6-12 14-12 6-12 MEAN QNH PRESSURE IN HPA 1021.6 1018.7 1018.9 1019.9 1018.4 1013.3 1010.3 1014.2 1017.4 1022.4 1022.6 1023.1 1018.4 MAX. QNH PRESSURE IN HPA 1030.2 1026.6 1027.6 1028.3 1025.1 1021.1 1017.5 1019.0 1023.2 1027.6 1032.1 1028.7 1032.1 DAY-HOUR 7- 6 6- 6 3- 6 8- 6 11- 6 2- 6 3- 6 12- 6 27- 6 30- 6 25- 6 14- 6 MIN. QNH PRESSURE IN HPA 1011.4 1009.9 1011.4 1015.1 1013.6 1005.2 1004.5 1008.4 1011.2 1016.7 1016.2 1014.0 1004.5 DAY-HOUR 28-15 17-12 26-12 17-12 29-12 30-15 25-15 1-15 7-12 6-12 14-12 6-12 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 843.1 840.8 841.1 841.7 840.7 836.7 834.3 837.6 840.1 844.2 844.2 844.5 840.7 MAX. QFE PRESSURE IN HPA 848.7 845.1 846.9 847.8 843.6 842.5 839.0 839.8 843.7 847.2 850.0 847.3 850.0 DAY 7 7 3 8 10 2 3 12 27 30 25 22 MIN. QFE PRESSURE IN HPA 838.0 835.2 836.9 838.4 837.0 831.9 830.8 834.2 836.5 841.2 840.7 838.8 830.8 DAY 29 19 17 14 29 21 26 1 7 6 14 6 MEAN QNH PRESSURE IN HPA 1021.6 1019.0 1019.3 1020.0 1018.9 1014.2 1011.3 1015.3 1018.2 1023.0 1023.0 1023.3 1018.9 MAX. QNH PRESSURE IN HPA 1028.2 1024.0 1026.1 1027.2 1022.3 1021.0 1016.9 1017.8 1022.4 1026.5 1029.8 1026.6 1029.8 DAY 7 7 3 8 10 2 3 12 27 30 25 22 MIN. QNH PRESSURE IN HPA 1015.7 1012.5 1014.4 1016.2 1014.6 1008.6 1007.3 1011.3 1014.0 1019.5 1018.9 1016.7 1007.3 DAY 29 19 17 14 29 21 26 1 7 6 14 6 MEAN QFF PRESSURE IN HPA 1022.6 1017.6 1016.2 1013.3 1009.5 1001.0 995.5 1001.0 1006.5 1015.5 1020.4 1022.1 1011.8 MAX. QFF PRESSURE IN HPA 1029.7 1026.0 1027.9 1019.6 1014.9 1010.1 1003.1 1004.6 1012.1 1020.6 1030.6 1028.8 1030.6 DAY 7 6 3 8 1 1 3 12 27 30 25 15 MIN. QFF PRESSURE IN HPA 1014.1 1010.5 1007.7 1008.1 1003.6 994.8 991.4 994.8 1000.6 1010.0 1012.8 1012.9 991.4 DAY 29 19 17 21 29 30 26 1 7 1 2 6 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ZARGHAN (40847) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 29 47 N LONGITUDE 52 43 E DATA PROCESSING CENTER ELEVATION 1596.0 M MEANS AND EXTREMES FOR THE YEAR 2003 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 0600 UTC. MEAN QFE PRESSURE IN HPA 844.4 841.9 842.2 842.9 841.6 837.1 834.7 838.3 841.0 845.4 845.6 845.9 841.7 MAX. QFE PRESSURE IN HPA 850.4 847.3 848.2 848.8 846.0 842.6 839.5 840.8 844.4 848.2 852.0 849.1 852.0 DAY 7 6 3 8 11 2 3 12 27 30 25 14 MIN. QFE PRESSURE IN HPA 839.2 836.1 837.4 839.5 837.4 832.3 831.2 834.2 837.0 842.2 841.8 838.0 831.2 DAY 29 19 26 17 29 21 25 1 7 6 14 6 MEAN QNH PRESSURE IN HPA 1023.2 1020.3 1020.6 1021.4 1019.9 1014.7 1011.8 1016.0 1019.3 1024.3 1024.6 1025.0 1020.1 MAX. QNH PRESSURE IN HPA 1030.2 1026.6 1027.6 1028.3 1025.1 1021.1 1017.5 1019.0 1023.2 1027.6 1032.1 1028.7 1032.1 DAY 7 6 3 8 11 2 3 12 27 30 25 14 MIN. QNH PRESSURE IN HPA 1017.1 1013.5 1015.0 1017.5 1015.0 1009.1 1007.8 1011.3 1014.6 1020.6 1020.2 1015.7 1007.8 DAY 29 19 26 17 29 21 25 1 7 6 14 6 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** PRESSURE AT HOUR 0900 UTC. MEAN QFE PRESSURE IN HPA 843.5 841.0 841.2 842.1 840.7 836.3 833.8 837.2 839.9 844.0 844.1 844.5 840.7 MAX. QFE PRESSURE IN HPA 849.1 846.9 846.8 847.6 843.8 842.1 838.7 839.3 843.2 846.7 850.6 848.0 850.6 DAY 7 6 3 7 11 1 3 11 27 15 25 14 MIN. QFE PRESSURE IN HPA 838.3 834.7 836.5 838.8 836.8 831.1 830.3 833.6 835.8 840.7 839.9 837.3 830.3 DAY 16 17 12 17 29 30 26 1 7 6 14 6 MEAN QNH PRESSURE IN HPA 1022.1 1019.3 1019.4 1020.5 1018.9 1013.7 1010.8 1014.8 1018.0 1022.7 1022.9 1023.3 1018.9 MAX. QNH PRESSURE IN HPA 1028.7 1026.1 1026.0 1026.9 1022.5 1020.5 1016.5 1017.2 1021.8 1025.9 1030.4 1027.4 1030.4 DAY 7 6 3 7 11 1 3 11 27 15 25 14 MIN. QNH PRESSURE IN HPA 1016.1 1011.9 1014.0 1016.7 1014.3 1007.7 1006.7 1010.6 1013.2 1018.9 1017.9 1014.9 1006.7 DAY 16 17 12 17 29 30 26 1 7 6 14 6 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** PRESSURE AT HOUR 1200 UTC. MEAN QFE PRESSURE IN HPA 842.0 839.4 839.5 840.6 839.4 834.8 832.2 835.4 838.1 842.4 842.6 843.1 839.1 MAX. QFE PRESSURE IN HPA 847.6 845.7 844.6 846.3 844.1 840.9 837.2 837.7 841.5 845.0 849.1 846.3 849.1 DAY 12 6 3 7 10 1 3 11 26 15 25 29 MIN. QFE PRESSURE IN HPA 836.4 833.0 834.3 837.5 836.2 829.2 828.5 832.0 834.1 838.8 838.4 836.5 828.5 DAY 28 17 26 17 29 30 25 1 7 6 14 6 MEAN QNH PRESSURE IN HPA 1020.4 1017.3 1017.5 1018.7 1017.3 1012.0 1008.9 1012.7 1015.9 1020.8 1021.1 1021.7 1017.0 MAX. QNH PRESSURE IN HPA 1026.9 1024.7 1023.4 1025.4 1022.9 1019.1 1014.8 1015.4 1019.8 1023.9 1028.7 1025.4 1028.7 DAY 12 6 3 7 10 1 3 11 26 15 25 29 MIN. QNH PRESSURE IN HPA 1013.9 1009.9 1011.4 1015.1 1013.6 1005.4 1004.6 1008.7 1011.2 1016.7 1016.2 1014.0 1004.6 DAY 28 17 26 17 29 30 25 1 7 6 14 6 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ZARGHAN (40847) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 29 47 N LONGITUDE 52 43 E DATA PROCESSING CENTER ELEVATION 1596.0 M MEANS AND EXTREMES FOR THE YEAR 2003 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 1500 UTC. MEAN QFE PRESSURE IN HPA 842.3 839.7 839.6 840.5 839.1 834.6 831.9 835.1 838.0 842.5 843.0 843.8 839.2 MAX. QFE PRESSURE IN HPA 847.7 845.2 844.4 846.2 843.7 840.7 836.4 837.2 841.3 845.4 849.4 847.5 849.4 DAY 6 6 2 7 10 1 3 11 26 15 25 29 MIN. QFE PRESSURE IN HPA 834.3 833.8 834.4 837.9 836.2 829.0 828.4 831.7 834.6 839.1 839.7 839.0 828.4 DAY 28 17 12 27 29 30 25 1 7 6 8 6 MEAN QNH PRESSURE IN HPA 1020.7 1017.7 1017.6 1018.6 1017.0 1011.8 1008.6 1012.4 1015.7 1021.0 1021.6 1022.6 1017.1 MAX. QNH PRESSURE IN HPA 1027.1 1024.1 1023.2 1025.3 1022.4 1018.9 1013.9 1014.8 1019.6 1024.4 1029.0 1026.8 1029.0 DAY 6 6 2 7 10 1 3 11 26 15 25 29 MIN. QNH PRESSURE IN HPA 1011.4 1010.8 1011.5 1015.6 1013.6 1005.2 1004.5 1008.4 1011.8 1017.0 1017.7 1016.9 1004.5 DAY 28 17 12 27 29 30 25 1 7 6 8 6 MEAN QFF PRESSURE IN HPA 1021.6 1016.2 1014.3 1011.8 1007.5 998.7 992.8 998.2 1004.0 1013.5 1019.0 1021.3 1009.9 MAX. QFF PRESSURE IN HPA 1028.0 1025.6 1024.7 1017.9 1013.8 1007.3 999.7 1001.6 1009.5 1018.3 1029.1 1028.6 1029.1 DAY 6 6 2 7 10 1 3 11 26 29 25 14 MIN. QFF PRESSURE IN HPA 1010.5 1010.3 1004.8 1008.2 1002.4 991.4 988.5 991.2 998.8 1007.9 1011.7 1012.5 988.5 DAY 28 25 12 28 28 30 26 1 7 1 2 6 PRESSURE AT HOUR 1800 UTC. MEAN QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** PRESSURE AT HOUR 2100 UTC. MEAN QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ZARGHAN (40847) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 29 47 N LONGITUDE 52 43 E DATA PROCESSING CENTER ELEVATION 1596.0 M MEANS AND EXTREMES FOR THE YEAR 2004 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AIR TEMPERATURE (C) 6.9 9.9 14.8 16.4 23.4 29.1 30.5 31.0 25.7 20.2 13.8 5.1 18.9 MINIMUN AIR TEMPERATURE (C) 1.4 0.7 4.2 7.0 10.5 15.5 18.5 18.0 12.7 7.7 4.6 -0.2 8.4 DAYS WITH MINIMUM TEMP. >=21 0 0 0 0 0 3 3 2 0 0 0 0 8 DAYS WITH MINIMUM TEMP. <=-4 1 0 0 0 0 0 0 0 0 0 0 2 3 DAYS WITH FREEZING MIN.<= 0 13 12 4 0 0 0 0 0 0 0 4 20 53 TEMPERATURE RECORDS LOWEST(C) -4.4 -3.0 -3.4 1.4 6.0 10.8 14.6 15.2 5.4 3.4 -2.4 -6.0 -6.0 DAY 22 9 17 19 15 4 20 15 29 24 30 30 MAXIMUM AIR TEMPERATURE (C) 11.1 16.2 21.3 22.0 29.5 35.6 36.5 37.9 32.8 27.9 20.3 9.5 25.0 DAYS WITH MAXIMUM TEMP. >=30 0 0 0 0 15 30 31 31 25 9 0 0 141 DAYS WITH MAXIMUM TEMP. <= 0 0 0 0 0 0 0 0 0 0 0 0 0 0 TEMPERATURE RECORDS HIGHEST(C) 15.0 22.5 26.0 28.0 33.6 37.5 39.0 40.5 36.0 31.5 24.8 16.2 40.5 DAY 25 14 10 22 22 27 28 17 7 12 8 6 DIF. BETWEEN (MAX.-MIN.) (C) 9.7 15.5 17.1 15.0 19.0 20.1 18.0 19.9 20.1 20.2 15.7 9.7 16.6 MEAN DAILY TEMP. (MDT) (C) 6.3 8.4 12.8 14.5 20.0 25.6 27.5 28.0 22.7 17.8 12.4 4.7 16.7 COOLING DEG. DAYS(BASE 21 0C) 0.0 0.0 0.0 0.0 15.2 137.4 201.0 215.9 66.4 0.6 0.0 0.0 636.7 HEATING DEG. DAYS(BASE 18 0C) 363.6 277.6 162.4 106.8 8.2 0.0 0.0 0.0 0.8 35.4 167.1 413.5 1535.3 DEWPOINT (MEAN C) 0.8 -1.9 -0.2 5.0 1.7 3.5 1.7 3.0 0.8 -2.0 0.8 -0.1 1.1 MIXING RATIO (G/KG) 5.03 4.14 4.64 6.71 5.37 6.06 5.40 5.86 4.98 4.02 4.95 4.70 5.16 VAPOUR PRESSURE (HPA) 6.74 5.57 6.24 8.96 7.18 8.06 7.19 7.80 6.67 5.43 6.66 6.32 6.90 SATURATION DEF. (HPA) 3.47 7.35 11.79 10.67 23.44 34.51 38.63 39.94 28.79 20.12 10.11 2.82 19.31 RELATIVE HUMIDITY (MEAN %) 69 50 41 51 28 22 19 19 23 27 45 72 39 RELATIVE HUMIDITY (MAX. %) 88 79 71 78 55 45 38 37 45 52 70 90 62 RELATIVE HUMIDITY (MIN. %) 53 30 23 35 16 13 10 11 12 13 28 56 25 RELATIVE HUMIDITY (MEAN% 03UTC) 87 79 71 77 55 45 37 37 45 52 69 88 62 RELATIVE HUMIDITY (MEAN% 09UTC) 59 37 30 42 19 15 12 13 14 16 33 67 30 RELATIVE HUMIDITY (MEAN% 15UTC) 65 42 33 45 22 16 14 14 17 20 43 70 33 RH=0 => RELATIVE HUMIDITY < 0.5% AMOUNT OF PRECIPITATION MM. 234.1 13.5 7.2 39.3 5.4 0.1 5.1 0.0 0.0 0.0 26.6 311.3 642.6 DAYS WITH PRECIPITATION >=10 6 0 0 1 0 0 0 0 0 0 1 8 16 DAYS WITH PRECIPITATION >= 5 8 2 0 2 1 0 0 0 0 0 2 9 24 DAYS WITH PRECIPITATION >= 1 11 4 3 4 1 0 2 0 0 0 4 9 38 DAYS WITH PRECIPITATION 15 7 4 10 2 1 2 0 0 0 4 11 56 GREATEST DAILY PRECIPITATION 63.0 5.0 3.5 30.0 5.0 0.1 4.0 0.0 0.0 0.0 13.0 68.0 68.0 DAY 9 2 19 5 4 23 13 ** ** ** 23 16 DAY WITH THUNDER STORM 0 0 0 1 2 0 0 0 0 0 1 2 6 DAYS WITH SNOW OR SLEET 0 0 0 0 0 0 0 0 0 0 0 1 1 DAYS WITH DUST 0 0 1 0 0 0 0 0 0 1 0 0 2 WIND DIRECTION (PREVAILING) 315 315 315 315 315 180 135 315 180 180 225 315 315 PREVAILING WIND SPEED(KNOTS) 6.9 8.1 10.5 8.1 12.0 10.6 8.7 7.1 8.3 8.7 6.8 6.2 8.7 PREVAILING WIND PERCENT 5.8 10.3 8.4 10.7 12.9 10.0 7.1 10.3 5.3 8.4 6.7 14.8 8.4 CALMS PERCENT OF WIND 80.0 70.3 70.3 57.3 56.8 60.7 64.5 59.4 72.7 71.6 72.7 72.3 67.4 NO. OF WIND OBSERVATION 155 145 155 150 155 150 155 155 150 155 150 155 1830 VECTOR WIND DIRECTION (MEAN) 233 257 262 264 267 219 236 295 190 182 254 335 254 VECTOR WIND MAGNITUDE(KNOTS) 0.7 1.8 1.4 1.5 2.9 1.6 0.7 0.7 0.4 0.7 0.9 0.8 1.0 WIND STEADINESES (MEAN %) 38.9 64.3 45.2 37.5 59.2 41.0 23.3 26.9 22.2 35.0 47.4 47.1 35.7 WIND SPEED (MEAN KNOTS) 1.8 2.8 3.1 4.0 4.9 3.9 3.0 2.6 1.8 2.0 1.9 1.7 2.8 FASTEST WIND DIRECTION 210 210 210 300 270 270 240 220 240 160 180 320 160 FASTEST WIND SPEED (KNOTS) 29 23 29 29 29 29 23 19 17 43 23 14 43 DAY 7 15 14 1 5 22 10 1 22 23 23 16 DAYS WITH SKY CLEAR (0-2)/8 17 20 21 12 26 25 23 30 27 30 15 16 262 DAYS WITH P.CLOUDY (3-6)/8 5 6 7 12 5 5 8 1 3 1 13 8 74 DAYS WITH CLOUDY (7-8)/8 9 3 3 6 0 0 0 0 0 0 2 7 30 DAYS WITH VISIBILITY =< 2 KM 0 0 0 0 0 0 0 0 0 0 0 6 6 DURATION OF SUNSHINE HOURS 182.4 243.3 272.7 232.3 338.6 337.2 311.7 345.2 290.2 303.4 227.4 171.9 3256.3 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ZARGHAN (40847) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 29 47 N LONGITUDE 52 43 E DATA PROCESSING CENTER ELEVATION 1596.0 M MEANS AND EXTREMES FOR THE YEAR 2004 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL MEAN QFE PRESSURE IN HPA 841.0 842.9 842.5 840.3 838.9 836.1 836.0 835.9 840.8 844.8 844.1 842.7 840.5 MAX. QFE PRESSURE IN HPA 848.0 849.0 848.8 844.4 844.0 842.9 840.8 840.4 846.6 849.1 848.1 851.0 851.0 DAY-HOUR 11-15 10- 6 9- 6 4- 6 4- 6 2- 6 18- 6 29- 6 26- 6 15- 6 2- 6 4- 6 MIN. QFE PRESSURE IN HPA 834.1 837.6 835.5 834.1 831.9 829.7 831.8 830.0 835.0 839.8 839.1 836.4 829.7 DAY-HOUR 27- 3 15-12 15-12 17-12 13-12 19-15 10-15 2-15 1-15 3-12 23-12 21-12 MEAN QNH PRESSURE IN HPA 1019.2 1021.5 1021.0 1018.4 1016.7 1013.5 1013.3 1013.2 1019.0 1023.6 1022.8 1021.2 1018.6 MAX. QNH PRESSURE IN HPA 1027.4 1028.6 1028.3 1023.2 1022.7 1021.5 1019.0 1018.5 1025.8 1028.7 1027.5 1030.9 1030.9 DAY-HOUR 11-15 10- 6 9- 6 4- 6 4- 6 2- 6 18- 6 29- 6 26- 6 15- 6 2- 6 4- 6 MIN. QNH PRESSURE IN HPA 1011.2 1015.3 1012.8 1011.2 1008.6 1006.0 1008.5 1006.4 1012.2 1017.8 1017.0 1013.9 1006.0 DAY-HOUR 27- 3 15-12 15-12 17-12 13-12 19-15 10-15 2-15 1-15 3-12 23-12 21-12 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY-HOUR **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY-HOUR **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** PRESSURE AT HOUR 0000 UTC. MEAN QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** PRESSURE AT HOUR 0300 UTC. MEAN QFE PRESSURE IN HPA 840.8 843.0 842.9 840.5 839.3 836.8 836.7 836.7 841.6 845.4 844.5 842.7 840.9 MAX. QFE PRESSURE IN HPA 846.7 847.6 847.4 843.4 842.8 841.7 840.1 839.8 846.1 847.8 846.8 849.6 849.6 DAY 12 10 9 24 18 1 18 29 27 15 2 4 MIN. QFE PRESSURE IN HPA 834.1 838.7 836.2 835.1 833.1 831.8 833.4 833.4 836.9 842.4 839.8 837.3 831.8 DAY 27 19 15 17 13 19 11 5 12 3 24 27 MEAN QNH PRESSURE IN HPA 1019.0 1021.6 1021.4 1018.6 1017.2 1014.3 1014.2 1014.2 1019.9 1024.4 1023.3 1021.2 1019.1 MAX. QNH PRESSURE IN HPA 1025.9 1026.9 1026.7 1022.0 1021.3 1020.1 1018.2 1017.8 1025.2 1027.2 1026.0 1029.3 1029.3 DAY 12 10 9 24 18 1 18 29 27 15 2 4 MIN. QNH PRESSURE IN HPA 1011.2 1016.5 1013.6 1012.3 1010.0 1008.5 1010.4 1010.4 1014.4 1020.9 1017.8 1014.9 1008.5 DAY 27 19 15 17 13 19 11 5 12 3 24 27 MEAN QFF PRESSURE IN HPA 1018.4 1020.1 1016.8 1012.5 1007.3 1001.1 999.6 999.7 1008.9 1017.2 1019.4 1021.8 1011.9 MAX. QFF PRESSURE IN HPA 1025.6 1027.1 1024.1 1016.7 1013.6 1009.5 1004.9 1004.5 1016.9 1021.9 1025.8 1031.5 1031.5 DAY 12 10 24 6 18 1 18 29 27 27 30 4 MIN. QFF PRESSURE IN HPA 1008.2 1013.7 1007.3 1005.7 999.6 993.9 995.3 994.9 1001.7 1011.8 1014.1 1014.8 993.9 DAY 27 19 15 17 13 20 10 4 12 3 24 16 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ZARGHAN (40847) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 29 47 N LONGITUDE 52 43 E DATA PROCESSING CENTER ELEVATION 1596.0 M MEANS AND EXTREMES FOR THE YEAR 2004 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 0600 UTC. MEAN QFE PRESSURE IN HPA 842.2 844.3 844.1 841.6 840.0 837.5 837.4 837.4 842.6 846.6 845.8 844.1 842.0 MAX. QFE PRESSURE IN HPA 847.5 849.0 848.8 844.4 844.0 842.9 840.8 840.4 846.6 849.1 848.1 851.0 851.0 DAY 12 10 9 4 4 2 18 29 26 15 2 4 MIN. QFE PRESSURE IN HPA 835.5 840.2 837.8 834.6 833.4 832.4 834.2 833.7 837.9 843.0 841.3 838.8 832.4 DAY 27 19 15 17 13 19 11 2 12 3 24 21 MEAN QNH PRESSURE IN HPA 1020.7 1023.1 1022.8 1019.9 1018.1 1015.1 1015.1 1015.0 1021.1 1025.8 1024.8 1022.8 1020.4 MAX. QNH PRESSURE IN HPA 1026.8 1028.6 1028.3 1023.2 1022.7 1021.5 1019.0 1018.5 1025.8 1028.7 1027.5 1030.9 1030.9 DAY 12 10 9 4 4 2 18 29 26 15 2 4 MIN. QNH PRESSURE IN HPA 1012.8 1018.3 1015.5 1011.8 1010.4 1009.2 1011.3 1010.7 1015.6 1021.6 1019.6 1016.7 1009.2 DAY 27 19 15 17 13 19 11 2 12 3 24 21 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** PRESSURE AT HOUR 0900 UTC. MEAN QFE PRESSURE IN HPA 841.3 843.5 843.1 840.8 839.3 836.5 836.4 836.4 841.2 845.1 844.2 843.1 840.9 MAX. QFE PRESSURE IN HPA 846.7 848.2 847.4 843.6 843.0 841.7 839.9 839.6 845.2 847.5 846.2 849.4 849.4 DAY 12 10 9 27 4 1 18 30 27 15 29 4 MIN. QFE PRESSURE IN HPA 835.6 839.6 836.8 834.7 832.8 831.3 833.7 832.6 836.6 841.3 840.4 837.6 831.3 DAY 27 19 15 17 13 18 11 2 12 3 24 21 MEAN QNH PRESSURE IN HPA 1019.6 1022.1 1021.7 1019.0 1017.2 1013.9 1013.9 1013.9 1019.5 1024.0 1023.0 1021.7 1019.1 MAX. QNH PRESSURE IN HPA 1025.9 1027.6 1026.7 1022.3 1021.6 1020.1 1017.9 1017.6 1024.1 1026.8 1025.3 1029.0 1029.0 DAY 12 10 9 27 4 1 18 30 27 15 29 4 MIN. QNH PRESSURE IN HPA 1012.9 1017.6 1014.3 1011.9 1009.6 1007.9 1010.7 1009.4 1014.1 1019.6 1018.5 1015.3 1007.9 DAY 27 19 15 17 13 18 11 2 12 3 24 21 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** PRESSURE AT HOUR 1200 UTC. MEAN QFE PRESSURE IN HPA 840.1 841.8 841.2 839.2 837.9 835.0 834.9 834.6 839.5 843.3 842.8 841.5 839.3 MAX. QFE PRESSURE IN HPA 846.5 846.6 845.5 842.9 840.5 840.2 837.6 837.6 843.5 845.7 845.0 847.8 847.8 DAY 11 10 8 27 3 1 17 29 26 14 3 4 MIN. QFE PRESSURE IN HPA 835.2 837.6 835.5 834.1 831.9 829.9 832.5 830.7 835.2 839.8 839.1 836.4 829.9 DAY 23 15 15 17 13 19 3 2 12 3 23 21 MEAN QNH PRESSURE IN HPA 1018.1 1020.2 1019.5 1017.2 1015.6 1012.2 1012.1 1011.8 1017.5 1021.9 1021.3 1019.9 1017.3 MAX. QNH PRESSURE IN HPA 1025.7 1025.8 1024.5 1021.5 1018.6 1018.3 1015.3 1015.3 1022.2 1024.7 1023.9 1027.2 1027.2 DAY 11 10 8 27 3 1 17 29 26 14 3 4 MIN. QNH PRESSURE IN HPA 1012.5 1015.3 1012.8 1011.2 1008.6 1006.3 1009.3 1007.2 1012.5 1017.8 1017.0 1013.9 1006.3 DAY 23 15 15 17 13 19 3 2 12 3 23 21 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ZARGHAN (40847) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 29 47 N LONGITUDE 52 43 E DATA PROCESSING CENTER ELEVATION 1596.0 M MEANS AND EXTREMES FOR THE YEAR 2004 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 1500 UTC. MEAN QFE PRESSURE IN HPA 840.4 842.1 841.3 839.4 837.9 834.8 834.4 834.3 839.2 843.5 843.2 842.1 839.4 MAX. QFE PRESSURE IN HPA 848.0 846.6 845.2 843.5 843.0 839.8 837.0 837.1 843.4 847.6 845.4 848.1 848.1 DAY 11 10 8 27 3 2 17 30 26 23 3 3 MIN. QFE PRESSURE IN HPA 836.1 838.1 835.6 834.4 832.1 829.7 831.8 830.0 835.0 840.0 840.6 836.7 829.7 DAY 14 18 15 17 13 19 10 2 1 3 27 26 MEAN QNH PRESSURE IN HPA 1018.6 1020.6 1019.6 1017.4 1015.6 1012.0 1011.5 1011.4 1017.2 1022.1 1021.8 1020.5 1017.4 MAX. QNH PRESSURE IN HPA 1027.4 1025.8 1024.1 1022.2 1021.6 1017.8 1014.6 1014.7 1022.0 1026.9 1024.4 1027.5 1027.5 DAY 11 10 8 27 3 2 17 30 26 23 3 3 MIN. QNH PRESSURE IN HPA 1013.5 1015.8 1012.9 1011.5 1008.8 1006.0 1008.5 1006.4 1012.2 1018.1 1018.8 1014.2 1006.0 DAY 14 18 15 17 13 19 10 2 1 3 27 26 MEAN QFF PRESSURE IN HPA 1017.9 1018.9 1014.9 1011.1 1005.6 998.7 997.0 996.8 1006.2 1015.0 1017.9 1021.0 1010.1 MAX. QFF PRESSURE IN HPA 1026.9 1025.2 1021.7 1015.9 1014.4 1006.8 1001.2 1001.4 1014.3 1022.0 1024.3 1029.9 1029.9 DAY 11 10 23 7 3 1 18 30 30 23 29 4 MIN. QFF PRESSURE IN HPA 1009.3 1011.2 1005.8 1004.2 999.8 991.5 992.8 989.9 999.6 1009.2 1013.3 1013.3 989.9 DAY 14 15 15 1 13 19 10 2 11 3 27 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 ZARGHAN (40847) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 29 47 N LONGITUDE 52 43 E DATA PROCESSING CENTER ELEVATION 1596.0 M MEANS AND EXTREMES FOR THE YEAR 2005 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AIR TEMPERATURE (C) 4.9 7.5 13.1 19.1 22.5 29.1 31.5 30.5 26.9 20.5 12.6 9.7 19.0 MINIMUN AIR TEMPERATURE (C) -1.5 -0.0 4.4 8.0 10.1 14.6 18.6 17.7 13.3 7.7 4.2 1.5 8.2 DAYS WITH MINIMUM TEMP. >=21 0 0 0 0 0 0 5 1 0 0 0 0 6 DAYS WITH MINIMUM TEMP. <=-4 8 2 0 0 0 0 0 0 0 0 0 0 10 DAYS WITH FREEZING MIN.<= 0 22 14 5 0 0 0 0 0 0 0 3 12 56 TEMPERATURE RECORDS LOWEST(C) -5.6 -6.4 -1.6 1.2 5.0 11.4 14.6 13.2 8.6 3.4 -2.8 -2.6 -6.4 DAY 27 10 27 6 7 3 1 19 30 25 11 28 MAXIMUM AIR TEMPERATURE (C) 9.9 12.6 19.0 25.3 28.5 35.4 37.7 37.1 34.1 27.9 18.3 15.7 25.1 DAYS WITH MAXIMUM TEMP. >=30 0 0 0 1 11 30 31 31 30 7 0 0 141 DAYS WITH MAXIMUM TEMP. <= 0 0 0 0 0 0 0 0 0 0 0 0 0 0 TEMPERATURE RECORDS HIGHEST(C) 17.4 20.6 24.0 30.4 31.5 39.8 40.6 40.5 36.8 30.5 25.8 20.5 40.6 DAY 3 21 31 24 29 26 17 9 9 1 3 6 DIF. BETWEEN (MAX.-MIN.) (C) 11.4 12.6 14.6 17.3 18.4 20.8 19.1 19.4 20.8 20.2 14.1 14.2 16.9 MEAN DAILY TEMP. (MDT) (C) 4.2 6.3 11.7 16.7 19.3 25.0 28.2 27.4 23.7 17.8 11.3 8.6 16.7 COOLING DEG. DAYS(BASE 21 0C) 0.0 0.0 0.0 1.2 3.2 120.5 222.7 198.0 83.9 0.0 0.0 0.0 629.6 HEATING DEG. DAYS(BASE 18 0C) 427.5 328.3 196.7 56.3 15.6 0.0 0.0 0.0 0.0 27.9 201.5 290.0 1543.7 DEWPOINT (MEAN C) -1.9 -1.9 0.4 2.3 1.7 1.6 4.2 4.0 0.9 0.9 2.6 0.7 1.3 MIXING RATIO (G/KG) 4.08 4.19 5.08 5.64 5.33 5.27 6.45 6.27 5.01 4.92 5.77 4.86 5.24 VAPOUR PRESSURE (HPA) 5.48 5.61 6.80 7.56 7.13 7.02 8.57 8.35 6.70 6.62 7.75 6.54 7.01 SATURATION DEF. (HPA) 3.55 5.33 9.04 16.03 21.72 35.88 40.36 37.89 31.32 19.35 7.79 6.20 19.54 RELATIVE HUMIDITY (MEAN %) 65 57 48 37 29 20 21 22 22 31 57 57 39 RELATIVE HUMIDITY (MAX. %) 84 83 76 67 58 44 43 43 44 57 80 82 63 RELATIVE HUMIDITY (MIN. %) 47 39 29 21 16 11 12 12 11 18 40 37 24 RELATIVE HUMIDITY (MEAN% 03UTC) 82 82 76 66 58 44 43 43 44 57 79 81 63 RELATIVE HUMIDITY (MEAN% 09UTC) 56 47 38 28 21 13 14 14 14 20 47 46 30 RELATIVE HUMIDITY (MEAN% 15UTC) 63 50 38 28 21 15 14 16 15 24 57 55 33 RH=0 => RELATIVE HUMIDITY < 0.5% AMOUNT OF PRECIPITATION MM. 91.6 28.0 35.0 2.1 3.2 0.0 0.4 0.0 0.0 0.0 80.6 42.7 283.6 DAYS WITH PRECIPITATION >=10 3 0 1 0 0 0 0 0 0 0 3 2 9 DAYS WITH PRECIPITATION >= 5 7 3 3 0 0 0 0 0 0 0 5 2 20 DAYS WITH PRECIPITATION >= 1 7 6 4 1 1 0 0 0 0 0 5 3 27 DAYS WITH PRECIPITATION 10 8 6 3 2 0 3 0 0 0 8 4 44 GREATEST DAILY PRECIPITATION 35.0 8.9 18.0 2.0 3.0 0.0 0.3 0.0 0.0 0.0 34.0 25.0 35.0 DAY 23 26 14 30 1 ** 21 ** ** ** 14 26 DAY WITH THUNDER STORM 0 0 0 0 0 0 1 0 0 0 0 0 1 DAYS WITH SNOW OR SLEET 0 1 0 0 0 0 0 0 0 0 0 1 2 DAYS WITH DUST 0 0 0 0 4 0 2 4 0 0 0 0 10 WIND DIRECTION (PREVAILING) 315 315 315 270 315 315 135 45 180 225 315 180 315 PREVAILING WIND SPEED(KNOTS) 6.8 11.0 11.0 7.6 8.9 8.5 7.4 7.5 11.9 8.3 9.4 9.4 9.3 PREVAILING WIND PERCENT 12.3 10.0 13.5 10.0 10.3 10.0 8.4 7.1 6.7 5.2 4.7 4.5 7.8 CALMS PERCENT OF WIND 74.8 70.7 59.4 60.0 69.7 62.7 63.2 67.1 66.0 80.6 84.0 83.9 70.2 NO. OF WIND OBSERVATION 155 140 155 150 155 150 155 155 150 155 150 155 1825 VECTOR WIND DIRECTION (MEAN) 259 283 276 278 291 248 169 311 217 228 287 227 267 VECTOR WIND MAGNITUDE(KNOTS) 1.2 1.5 2.3 1.4 1.1 0.9 0.5 0.6 0.5 0.4 0.6 0.8 0.9 WIND STEADINESES (MEAN %) 54.5 60.0 60.5 43.7 42.3 28.1 16.1 22.2 16.7 28.6 46.2 57.1 36.0 WIND SPEED (MEAN KNOTS) 2.2 2.5 3.8 3.2 2.6 3.2 3.1 2.7 3.0 1.4 1.3 1.4 2.5 FASTEST WIND DIRECTION 180 240 250 300 210 220 170 300 330 330 300 180 180 FASTEST WIND SPEED (KNOTS) 29 23 29 23 29 23 19 29 29 16 16 29 29 DAY 6 5 26 7 5 10 6 30 15 28 3 25 DAYS WITH SKY CLEAR (0-2)/8 20 11 16 19 26 30 23 30 30 31 19 21 276 DAYS WITH P.CLOUDY (3-6)/8 6 12 9 8 4 0 8 1 0 0 6 5 59 DAYS WITH CLOUDY (7-8)/8 5 5 6 3 1 0 0 0 0 0 5 5 30 DAYS WITH VISIBILITY =< 2 KM 0 2 1 0 0 0 0 0 0 0 1 0 4 DURATION OF SUNSHINE HOURS 222.0 200.0 244.6 284.3 326.4 360.3 340.7 337.5 318.6 312.8 217.0 219.0 3383.2 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ZARGHAN (40847) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 29 47 N LONGITUDE 52 43 E DATA PROCESSING CENTER ELEVATION 1596.0 M MEANS AND EXTREMES FOR THE YEAR 2005 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL MEAN QFE PRESSURE IN HPA 841.7 839.6 840.6 842.0 839.5 836.0 834.9 836.0 839.1 844.4 844.1 844.4 840.2 MAX. QFE PRESSURE IN HPA 847.4 845.5 845.9 846.6 843.5 841.5 839.3 840.4 843.3 850.0 850.1 849.3 850.1 DAY-HOUR 1- 6 15- 6 11- 6 14- 6 17- 6 6- 6 19- 6 29- 6 26- 6 12- 6 23- 6 8- 6 MIN. QFE PRESSURE IN HPA 833.8 833.4 833.6 835.5 833.9 828.5 828.9 831.0 834.0 838.9 839.2 839.6 828.5 DAY-HOUR 23- 3 8-12 24- 3 29-12 6-12 28-12 5-15 7-15 5-15 4-15 8-12 25-12 MEAN QNH PRESSURE IN HPA 1020.1 1017.6 1018.8 1020.4 1017.4 1013.4 1012.1 1013.4 1017.1 1023.2 1022.8 1023.2 1018.3 MAX. QNH PRESSURE IN HPA 1026.7 1024.5 1025.0 1025.8 1022.2 1019.8 1017.2 1018.5 1021.9 1029.8 1029.9 1028.9 1029.9 DAY-HOUR 1- 6 15- 6 11- 6 14- 6 17- 6 6- 6 19- 6 29- 6 26- 6 12- 6 23- 6 8- 6 MIN. QNH PRESSURE IN HPA 1010.8 1010.4 1010.6 1012.8 1010.9 1004.6 1005.1 1007.5 1011.1 1016.8 1017.1 1017.6 1004.6 DAY-HOUR 23- 3 8-12 24- 3 29-12 6-12 28-12 5-15 7-15 5-15 4-15 8-12 25-12 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 841.7 839.7 840.9 842.4 840.1 836.9 835.7 836.8 839.8 845.0 844.4 844.5 840.7 MAX. QFE PRESSURE IN HPA 846.0 844.0 844.5 845.4 842.5 840.7 838.2 839.6 842.5 848.9 848.4 847.9 848.9 DAY 1 15 12 15 17 7 28 27 26 12 23 8 MIN. QFE PRESSURE IN HPA 833.8 835.3 833.6 836.3 835.6 831.2 831.2 832.9 836.4 840.2 840.7 840.4 831.2 DAY 23 7 24 30 6 28 6 8 5 4 9 24 MEAN QNH PRESSURE IN HPA 1020.1 1017.7 1019.1 1020.8 1018.2 1014.4 1013.0 1014.3 1017.8 1024.0 1023.2 1023.4 1018.8 MAX. QNH PRESSURE IN HPA 1025.1 1022.7 1023.3 1024.4 1021.0 1018.9 1016.0 1017.6 1021.0 1028.5 1027.9 1027.3 1028.5 DAY 1 15 12 15 17 7 28 27 26 12 23 8 MIN. QNH PRESSURE IN HPA 1010.8 1012.6 1010.6 1013.7 1012.9 1007.8 1007.8 1009.8 1013.9 1018.3 1018.9 1018.5 1007.8 DAY 23 7 24 30 6 28 6 8 5 4 9 24 MEAN QFF PRESSURE IN HPA 1021.3 1017.1 1015.1 1013.4 1008.8 1001.1 997.8 999.9 1006.2 1016.5 1019.8 1021.9 1011.6 MAX. QFF PRESSURE IN HPA 1027.8 1024.9 1019.9 1018.8 1012.0 1008.0 1002.4 1004.8 1010.9 1021.0 1024.0 1028.5 1028.5 DAY 13 15 29 9 8 4 28 19 30 31 23 28 MIN. QFF PRESSURE IN HPA 1011.9 1011.4 1003.6 1004.4 1004.2 993.6 993.0 994.7 1000.4 1008.9 1014.2 1015.0 993.0 DAY 23 5 24 27 5 28 6 8 6 4 8 26 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ZARGHAN (40847) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 29 47 N LONGITUDE 52 43 E DATA PROCESSING CENTER ELEVATION 1596.0 M MEANS AND EXTREMES FOR THE YEAR 2005 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 0600 UTC. MEAN QFE PRESSURE IN HPA 843.2 841.0 842.1 843.4 840.9 837.3 836.4 837.5 840.8 846.2 845.7 846.1 841.7 MAX. QFE PRESSURE IN HPA 847.4 845.5 845.9 846.6 843.5 841.5 839.3 840.4 843.3 850.0 850.1 849.3 850.1 DAY 1 15 11 14 17 6 19 29 26 12 23 8 MIN. QFE PRESSURE IN HPA 835.5 836.0 834.6 836.6 836.3 831.3 831.4 833.5 837.3 841.3 842.2 841.5 831.3 DAY 23 7 24 30 6 28 5 8 5 4 9 24 MEAN QNH PRESSURE IN HPA 1021.8 1019.3 1020.5 1022.0 1019.1 1014.9 1013.8 1015.2 1019.0 1025.3 1024.7 1025.2 1020.1 MAX. QNH PRESSURE IN HPA 1026.7 1024.5 1025.0 1025.8 1022.2 1019.8 1017.2 1018.5 1021.9 1029.8 1029.9 1028.9 1029.9 DAY 1 15 11 14 17 6 19 29 26 12 23 8 MIN. QNH PRESSURE IN HPA 1012.8 1013.4 1011.8 1014.1 1013.7 1007.9 1008.0 1010.5 1014.9 1019.6 1020.6 1019.8 1007.9 DAY 23 7 24 30 6 28 5 8 5 4 9 24 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** PRESSURE AT HOUR 0900 UTC. MEAN QFE PRESSURE IN HPA 842.1 840.1 841.1 842.5 839.9 836.4 835.4 836.5 839.6 844.7 844.3 844.7 840.6 MAX. QFE PRESSURE IN HPA 846.0 845.4 844.8 845.9 843.0 841.2 838.7 839.1 842.0 848.8 848.4 847.7 848.8 DAY 1 15 14 14 17 6 19 27 26 12 23 8 MIN. QFE PRESSURE IN HPA 836.0 835.1 834.2 836.1 835.0 830.1 830.7 832.6 836.4 840.1 840.6 841.3 830.1 DAY 6 7 24 30 6 28 5 8 5 4 10 25 MEAN QNH PRESSURE IN HPA 1020.5 1018.2 1019.3 1020.9 1018.0 1013.9 1012.6 1013.9 1017.6 1023.5 1023.0 1023.6 1018.8 MAX. QNH PRESSURE IN HPA 1025.1 1024.4 1023.7 1025.0 1021.6 1019.5 1016.5 1017.0 1020.4 1028.3 1027.9 1027.1 1028.3 DAY 1 15 14 14 17 6 19 27 26 12 23 8 MIN. QNH PRESSURE IN HPA 1013.4 1012.3 1011.3 1013.5 1012.2 1006.5 1007.2 1009.4 1013.9 1018.2 1018.8 1019.6 1006.5 DAY 6 7 24 30 6 28 5 8 5 4 10 25 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** PRESSURE AT HOUR 1200 UTC. MEAN QFE PRESSURE IN HPA 840.7 838.4 839.4 840.8 838.4 834.9 833.9 834.8 837.8 843.0 842.9 843.2 839.0 MAX. QFE PRESSURE IN HPA 844.5 843.5 843.8 843.5 841.4 839.9 836.5 837.7 840.3 846.9 846.5 846.3 846.9 DAY 9 15 14 14 17 6 19 27 22 12 13 7 MIN. QFE PRESSURE IN HPA 835.4 833.4 834.0 835.5 833.9 828.5 829.2 831.3 834.7 839.0 839.2 839.6 828.5 DAY 3 8 24 29 6 28 5 8 5 4 8 25 MEAN QNH PRESSURE IN HPA 1018.9 1016.2 1017.4 1019.0 1016.2 1012.1 1010.9 1012.0 1015.5 1021.6 1021.4 1021.8 1016.9 MAX. QNH PRESSURE IN HPA 1023.3 1022.2 1022.5 1022.2 1019.7 1017.9 1014.0 1015.4 1018.4 1026.1 1025.7 1025.4 1026.1 DAY 9 15 14 14 17 6 19 27 22 12 13 7 MIN. QNH PRESSURE IN HPA 1012.7 1010.4 1011.1 1012.8 1010.9 1004.6 1005.4 1007.9 1011.9 1016.9 1017.1 1017.6 1004.6 DAY 3 8 24 29 6 28 5 8 5 4 8 25 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ZARGHAN (40847) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 29 47 N LONGITUDE 52 43 E DATA PROCESSING CENTER ELEVATION 1596.0 M MEANS AND EXTREMES FOR THE YEAR 2005 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 1500 UTC. MEAN QFE PRESSURE IN HPA 841.1 838.7 839.7 840.9 838.1 834.5 833.3 834.4 837.8 843.1 843.3 843.7 839.0 MAX. QFE PRESSURE IN HPA 845.1 844.1 844.5 843.8 841.0 839.0 836.4 837.5 840.8 846.7 847.8 846.7 847.8 DAY 1 15 13 17 17 6 15 29 30 12 13 7 MIN. QFE PRESSURE IN HPA 836.8 834.2 835.3 835.7 834.3 828.8 828.9 831.0 834.0 838.9 840.1 840.1 828.8 DAY 3 8 1 29 6 28 5 7 5 4 10 25 MEAN QNH PRESSURE IN HPA 1019.3 1016.5 1017.7 1019.1 1015.8 1011.7 1010.3 1011.5 1015.4 1021.7 1021.9 1022.4 1016.9 MAX. QNH PRESSURE IN HPA 1024.0 1022.9 1023.3 1022.5 1019.2 1016.9 1013.9 1015.1 1019.0 1025.9 1027.2 1025.9 1027.2 DAY 1 15 13 17 17 6 15 29 30 12 13 7 MIN. QNH PRESSURE IN HPA 1014.3 1011.3 1012.6 1013.0 1011.4 1005.0 1005.1 1007.5 1011.1 1016.8 1018.2 1018.2 1005.0 DAY 3 8 1 29 6 28 5 7 5 4 10 25 MEAN QFF PRESSURE IN HPA 1020.4 1015.8 1013.6 1011.7 1006.3 998.3 995.1 997.1 1003.8 1014.2 1018.4 1020.9 1009.6 MAX. QFF PRESSURE IN HPA 1026.5 1024.4 1018.2 1016.1 1009.7 1005.4 999.2 1002.0 1010.2 1018.3 1025.9 1026.5 1026.5 DAY 13 15 27 9 8 3 29 18 30 30 13 27 MIN. QFF PRESSURE IN HPA 1013.5 1010.4 1007.4 1004.4 1003.0 990.7 990.5 992.1 997.9 1007.8 1013.2 1014.3 990.5 DAY 10 28 24 27 5 28 5 8 5 3 8 25 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 ZARGHAN (40847) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 29 47 N LONGITUDE 52 43 E DATA PROCESSING CENTER ELEVATION 1596.0 M CLIMATOLOGICAL NORMALS FOR THE PERIOD 1989-2005 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AIR TEMPERATURE (C) 5.3 8.0 11.8 17.4 23.2 28.8 31.4 30.2 26.1 20.0 12.9 8.0 18.6 MINIMUN AIR TEMPERATURE (C) -1.3 0.0 3.0 7.0 10.5 14.4 18.4 17.2 12.8 7.6 2.8 0.5 7.8 DAYS WITH MINIMUM TEMP. >=21 0.0 0.0 0.0 0.0 0.0 0.2 5.2 2.6 0.1 0.0 0.0 0.0 8.1 DAYS WITH MINIMUM TEMP. <=-4 7.3 4.0 0.6 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.4 1.8 14.1 DAYS WITH FREEZING MIN.<= 0 21.5 16.0 6.8 0.3 0.0 0.0 0.0 0.0 0.0 0.1 6.8 16.8 68.3 TEMPERATURE RECORDS LOWEST(C) -13.6 -8.4 -6.6 -0.8 2.6 7.6 12.0 10.8 5.4 -0.1 -5.6 -6.8 -13.6 YEAR-DAY 92-29 92-13 92-12 90- 6 3- 1 93- 5 94- 1 91-25 4-29 96-26 95-28 2-23 92-29 MAXIMUM AIR TEMPERATURE (C) 10.2 13.5 17.4 23.2 29.2 35.1 37.5 36.8 33.1 27.2 19.5 13.5 24.7 DAYS WITH MAXIMUM TEMP. >=30 0.0 0.0 0.0 0.4 13.5 29.6 30.9 31.0 27.6 4.6 0.0 0.0 137.6 DAYS WITH MAXIMUM TEMP. <= 0 0.3 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.3 TEMPERATURE RECORDS HIGHEST(C) 21.0 22.5 26.0 30.6 36.2 39.8 43.8 41.4 38.4 32.8 26.8 20.8 43.8 YEAR-DAY 94- 2 4-14 4-10 2-28 0-31 5-26 94-13 94- 6 91-10 1- 1 3- 1 98-23 94-13 DIF. BETWEEN (MAX.-MIN.) (C) 11.5 13.5 14.4 16.2 18.7 20.7 19.1 19.6 20.3 19.6 16.7 13.0 16.9 MEAN DAILY TEMP. (MDT) (C) 4.5 6.8 10.2 15.1 19.9 24.8 27.9 27.0 23.0 17.4 11.2 7.0 16.2 STANDARD DEVIATION OF MDT(C) 1.27 0.94 1.34 1.22 1.05 0.63 0.97 0.69 0.82 0.81 0.82 1.46 1.00 COOLING DEG. DAYS(BASE 21 0C) 0.0 0.0 0.0 0.2 15.4 113.5 215.2 186.1 66.8 0.7 0.0 0.0 597.9 HEATING DEG. DAYS(BASE 18 0C) 419.7 316.9 240.9 92.4 11.0 0.0 0.0 0.0 0.3 37.6 205.3 342.1 1666.2 DEWPOINT (MEAN C) -1.8 -2.3 -0.1 3.0 3.1 3.1 4.6 3.4 1.2 -0.5 -1.4 -0.4 1.0 MIXING RATIO (G/KG) 4.17 4.15 4.84 5.92 5.97 6.03 6.66 6.10 5.16 4.59 4.35 4.61 5.21 VAPOUR PRESSURE (HPA) 5.60 5.56 6.49 7.93 7.98 8.02 8.83 8.11 6.90 6.17 5.86 6.20 6.97 SATURATION DEF. (HPA) 3.77 5.75 8.17 13.20 22.17 33.85 39.20 37.17 29.65 19.00 10.19 5.23 18.95 RELATIVE HUMIDITY (MEAN %) 65 54 50 44 32 23 22 21 23 30 43 60 38 RELATIVE HUMIDITY (MAX. %) 85 80 78 73 59 46 42 42 45 55 68 82 63 RELATIVE HUMIDITY (MIN. %) 47 36 32 27 18 14 13 12 12 16 27 43 25 RELATIVE HUMIDITY (MEAN% 03UTC) 83 78 77 72 58 45 42 42 45 55 67 81 62 RELATIVE HUMIDITY (MEAN% 09UTC) 56 45 40 33 22 15 15 14 14 20 32 50 30 RELATIVE HUMIDITY (MEAN% 15UTC) 62 47 42 36 25 18 17 16 18 24 39 57 33 RH=0 => RELATIVE HUMIDITY < 0.5% AMOUNT OF PRECIPITATION MM. 99.0 69.4 56.0 24.6 6.1 0.4 0.5 0.2 0.3 3.3 21.9 78.9 360.6 DAYS WITH PRECIPITATION >=10 3.1 2.1 1.9 0.6 0.1 0.0 0.0 0.0 0.0 0.1 0.8 2.6 11.3 DAYS WITH PRECIPITATION >= 5 5.1 3.7 3.7 1.6 0.4 0.0 0.0 0.0 0.0 0.2 1.4 3.6 19.7 DAYS WITH PRECIPITATION >= 1 7.2 6.1 6.5 3.2 1.3 0.3 0.2 0.1 0.1 0.6 2.5 5.7 33.8 DAYS WITH PRECIPITATION 9.6 8.2 8.9 5.2 2.7 0.7 0.7 0.4 0.1 1.3 4.5 7.7 50.0 GREATEST DAILY PRECIPITATION 69.0 65.0 45.0 37.0 27.0 2.1 4.0 2.0 3.0 19.0 44.0 68.0 69.0 YEAR-DAY 2-11 99- 6 99- 2 2- 3 94- 6 95- 3 4-13 93-26 91-30 95-22 94-17 4-16 2 DAY WITH THUNDER STORM 0.4 0.4 0.3 0.6 0.3 0.1 0.1 0.1 0.1 0.3 0.4 0.4 3.5 DAYS WITH SNOW OR SLEET 1.7 0.2 0.1 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.3 2.3 DAYS WITH DUST 0.1 0.2 0.8 0.8 2.0 0.9 1.4 0.9 0.7 0.9 0.4 0.0 9.1 WIND DIRECTION (PREVAILING) 315 315 225 270 315 315 180 315 315 225 225 225 315 PREVAILING WIND SPEED(KNOTS) 6.6 7.6 11.0 10.5 8.3 8.6 7.8 7.7 6.9 8.0 8.5 9.7 7.8 PREVAILING WIND PERCENT 5.8 7.8 8.2 9.3 11.7 7.5 5.7 5.5 5.0 4.9 4.4 4.1 6.3 CALMS PERCENT OF WIND 76.8 65.2 60.6 62.3 61.5 61.8 64.2 69.4 69.8 73.9 77.6 80.8 68.7 NO. OF WIND OBSERVATION 155.0 141.2 155.0 150.0 155.0 150.0 155.0 156.2 150.6 155.9 149.9 154.9 1828.7 VECTOR WIND DIRECTION (MEAN) 249 244 242 257 274 239 230 282 232 250 249 229 250 VECTOR WIND MAGNITUDE(KNOTS) 0.8 1.6 1.7 1.8 1.8 1.1 0.5 0.3 0.4 0.7 0.8 0.7 1.0 WIND STEADINESES (MEAN %) 44.4 51.6 48.6 52.9 56.2 36.7 18.5 14.3 19.0 38.9 47.1 46.7 40.0 WIND SPEED (MEAN KNOTS) 1.8 3.1 3.5 3.4 3.2 3.0 2.7 2.1 2.1 1.8 1.7 1.5 2.5 FASTEST WIND DIRECTION 180 220 220 240 250 300 290 300 120 160 220 210 220 FASTEST WIND SPEED (KNOTS) 39 49 49 49 39 39 29 39 35 43 39 49 49 YEAR-DAY 90-24 90-10 90-19 90-15 96-11 92- 6 2-25 92-11 0-13 4-23 89-16 89- 6 90 DAYS WITH SKY CLEAR (0-2)/8 16.8 16.5 16.0 14.6 22.5 27.8 26.9 28.1 28.5 26.9 18.6 18.1 261.3 DAYS WITH P.CLOUDY (3-6)/8 7.7 6.8 9.6 10.7 7.3 2.2 3.9 2.8 1.5 3.6 8.4 7.9 72.4 DAYS WITH CLOUDY (7-8)/8 6.4 4.9 5.4 4.7 1.1 0.0 0.1 0.1 0.0 0.4 3.0 5.0 31.1 DAYS WITH VISIBILITY =< 2 KM 2.3 0.8 0.3 0.1 0.0 0.0 0.0 0.0 0.2 0.1 0.5 1.8 6.1 DURATION OF SUNSHINE HOURS 196.9 211.4 239.6 264.8 330.7 351.6 340.4 339.2 309.9 292.0 230.8 197.1 3304.4 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ZARGHAN (40847) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 29 47 N LONGITUDE 52 43 E DATA PROCESSING CENTER ELEVATION 1596.0 M CLIMATOLOGICAL NORMALS FOR THE PERIOD 1989-2005 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL MEAN QFE PRESSURE IN HPA 841.9 841.0 840.4 840.7 839.6 836.2 834.5 836.4 839.6 843.4 844.0 843.8 840.1 MAX. QFE PRESSURE IN HPA 850.9 850.3 850.8 849.5 846.5 842.9 842.2 843.1 846.6 851.0 852.0 853.0 853.0 YEAR-DAY 92-10 91-16 2-11 98-12 98- 8 4- 2 96- 3 99-19 4-26 93-17 3-25 98-10 98-10 MIN. QFE PRESSURE IN HPA 830.0 832.5 830.3 833.2 831.6 828.5 827.2 830.0 830.4 836.4 836.7 835.8 827.2 YEAR-DAY 98-13 90-10 97-29 2- 3 1-25 5-28 95-16 4- 2 0- 1 96- 5 95- 6 0-15 95-16 MEAN QNH PRESSURE IN HPA 1020.3 1019.2 1018.5 1018.8 1017.6 1013.6 1011.6 1013.9 1017.6 1022.1 1022.8 1022.5 1018.2 MAX. QNH PRESSURE IN HPA 1030.8 1030.1 1030.7 1029.2 1025.7 1021.5 1020.6 1021.7 1025.8 1030.9 1032.1 1033.3 1033.3 YEAR-DAY 92-10 91-16 2-11 98-12 98- 8 4- 2 96- 3 99-19 4-26 93-17 3-25 98-10 98-10 MIN. QNH PRESSURE IN HPA 1006.4 1009.3 1006.7 1010.1 1008.2 1004.6 1003.1 1006.4 1006.8 1013.9 1014.2 1013.2 1003.1 YEAR-DAY 98-13 90-10 97-29 2- 3 1-25 5-28 95-16 4- 2 0- 1 96- 5 95- 6 0-15 95-16 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 0.0 MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** YEAR-DAY **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** YEAR-DAY **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** PRESSURE AT HOUR 0000 UTC. MEAN QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 0.0 MAX. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** YEAR-DAY **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** MIN. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** YEAR-DAY **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** MEAN QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 0.0 MAX. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** YEAR-DAY **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** MIN. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** YEAR-DAY **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 0.0 MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** YEAR-DAY **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** YEAR-DAY **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** PRESSURE AT HOUR 0300 UTC. MEAN QFE PRESSURE IN HPA 842.1 841.3 840.7 841.1 840.1 837.0 835.3 837.4 840.4 844.2 844.6 844.1 840.7 MAX. QFE PRESSURE IN HPA 850.6 849.5 849.0 847.8 846.0 842.5 841.5 842.1 846.1 850.3 850.1 851.6 851.6 YEAR-DAY 92-10 91-16 2-11 3- 8 94-15 3- 2 96- 4 99-19 4-27 93-17 96-19 98-10 98-10 MIN. QFE PRESSURE IN HPA 830.9 832.6 831.9 834.2 833.1 831.2 829.5 832.9 832.4 838.5 839.1 836.0 829.5 YEAR-DAY 98-13 96- 5 99- 2 2- 4 4-13 5-28 97-16 5- 8 0- 2 96- 5 0-22 0-15 97-16 MEAN QNH PRESSURE IN HPA 1020.5 1019.5 1018.9 1019.3 1018.2 1014.6 1012.6 1015.0 1018.5 1023.0 1023.4 1022.9 1018.9 MAX. QNH PRESSURE IN HPA 1030.4 1029.2 1028.6 1027.2 1025.1 1021.0 1019.8 1020.5 1025.2 1030.1 1029.9 1031.6 1031.6 YEAR-DAY 92-10 91-16 2-11 3- 8 94-15 3- 2 96- 4 99-19 4-27 93-17 96-19 98-10 98-10 MIN. QNH PRESSURE IN HPA 1007.4 1009.4 1008.6 1011.3 1010.0 1007.8 1005.8 1009.8 1009.2 1016.3 1017.0 1013.4 1005.8 YEAR-DAY 98-13 96- 5 99- 2 2- 4 4-13 5-28 97-16 5- 8 0- 2 96- 5 0-22 0-15 97-16 MEAN QFF PRESSURE IN HPA 1021.4 1018.8 1015.8 1012.9 1008.4 1001.5 997.7 1000.8 1007.2 1015.9 1020.4 1022.3 1011.9 MAX. QFF PRESSURE IN HPA 1035.9 1032.5 1027.9 1021.8 1016.1 1011.5 1006.0 1008.1 1016.9 1023.5 1030.6 1033.2 1035.9 YEAR-DAY 92-10 91-16 3- 3 98-12 92-14 95- 3 0-31 93-26 4-27 92-29 3-25 98-10 92-10 MIN. QFF PRESSURE IN HPA 1006.0 1006.8 1003.6 1004.4 998.2 992.5 989.2 993.5 997.7 1006.2 1010.0 1011.0 989.2 YEAR-DAY 98-13 96- 5 5-24 5-27 1-26 92-28 95-20 97- 1 0- 2 96- 5 99-12 0-15 95-20 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ZARGHAN (40847) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 29 47 N LONGITUDE 52 43 E DATA PROCESSING CENTER ELEVATION 1596.0 M CLIMATOLOGICAL NORMALS FOR THE PERIOD 1989-2005 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 0600 UTC. MEAN QFE PRESSURE IN HPA 843.3 842.4 841.8 842.0 840.8 837.5 835.8 838.0 841.2 845.2 845.7 845.3 841.6 MAX. QFE PRESSURE IN HPA 850.9 850.3 850.8 849.5 846.5 842.9 842.2 843.1 846.6 851.0 852.0 853.0 853.0 YEAR-DAY 92-10 91-16 2-11 98-12 98- 8 4- 2 96- 3 99-19 4-26 93-17 3-25 98-10 98-10 MIN. QFE PRESSURE IN HPA 831.5 833.5 833.0 834.6 833.4 831.3 830.0 833.5 833.3 839.0 840.0 836.0 830.0 YEAR-DAY 96-12 96- 5 99- 2 4-17 4-13 5-28 97-16 5- 8 0- 1 96- 5 0- 6 91-22 97-16 MEAN QNH PRESSURE IN HPA 1022.0 1020.9 1020.2 1020.4 1019.0 1015.1 1013.1 1015.7 1019.5 1024.1 1024.7 1024.3 1019.9 MAX. QNH PRESSURE IN HPA 1030.8 1030.1 1030.7 1029.2 1025.7 1021.5 1020.6 1021.7 1025.8 1030.9 1032.1 1033.3 1033.3 YEAR-DAY 92-10 91-16 2-11 98-12 98- 8 4- 2 96- 3 99-19 4-26 93-17 3-25 98-10 98-10 MIN. QNH PRESSURE IN HPA 1008.1 1010.5 1009.9 1011.8 1010.4 1007.9 1006.4 1010.5 1010.2 1016.9 1018.1 1013.4 1006.4 YEAR-DAY 96-12 96- 5 99- 2 4-17 4-13 5-28 97-16 5- 8 0- 1 96- 5 0- 6 91-22 97-16 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** 1014.1 ****** ****** 1014.1 MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** 1020.0 ****** ****** 1020.0 YEAR-DAY **-** **-** **-** **-** **-** **-** **-** **-** **-** 90-19 **-** **-** 90-19 MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** 1007.0 ****** ****** 1007.0 YEAR-DAY **-** **-** **-** **-** **-** **-** **-** **-** **-** 90- 1 **-** **-** 90- 1 PRESSURE AT HOUR 0900 UTC. MEAN QFE PRESSURE IN HPA 842.2 841.4 840.8 841.0 839.9 836.6 834.9 836.9 840.0 843.6 844.1 843.9 840.4 MAX. QFE PRESSURE IN HPA 849.2 849.7 850.0 848.4 845.7 842.2 841.7 841.8 845.2 848.8 850.6 851.1 851.1 YEAR-DAY 92-10 2- 6 2-11 98-12 98- 8 99- 1 96- 3 99-19 4-27 5-12 3-25 98-10 98-10 MIN. QFE PRESSURE IN HPA 830.0 834.1 833.2 834.2 832.8 830.1 829.5 832.3 831.9 837.7 838.5 835.9 829.5 YEAR-DAY 98-13 96- 5 93-12 92-18 4-13 5-28 97-16 92- 2 0- 1 92- 7 95- 6 0-15 97-16 MEAN QNH PRESSURE IN HPA 1020.7 1019.7 1019.0 1019.3 1018.0 1014.1 1012.0 1014.4 1018.0 1022.3 1022.9 1022.7 1018.6 MAX. QNH PRESSURE IN HPA 1028.8 1029.4 1029.8 1027.9 1024.7 1020.6 1020.1 1020.2 1024.1 1028.3 1030.4 1031.0 1031.0 YEAR-DAY 92-10 2- 6 2-11 98-12 98- 8 99- 1 96- 3 99-19 4-27 5-12 3-25 98-10 98-10 MIN. QNH PRESSURE IN HPA 1006.4 1011.2 1010.1 1011.3 1009.6 1006.5 1005.8 1009.1 1008.6 1015.4 1016.3 1013.3 1005.8 YEAR-DAY 98-13 96- 5 93-12 92-18 4-13 5-28 97-16 92- 2 0- 1 92- 7 95- 6 0-15 97-16 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 0.0 MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** YEAR-DAY **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** YEAR-DAY **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** PRESSURE AT HOUR 1200 UTC. MEAN QFE PRESSURE IN HPA 840.9 839.7 839.2 839.6 838.6 835.2 833.4 835.2 838.3 842.0 842.8 842.6 838.9 MAX. QFE PRESSURE IN HPA 847.6 847.9 847.7 846.3 844.8 841.2 840.5 839.7 843.5 847.3 849.1 849.5 849.5 YEAR-DAY 3-12 91-15 2-11 98-12 94-15 98-19 96- 3 99-19 4-26 93-17 3-25 98-10 98-10 MIN. QFE PRESSURE IN HPA 831.0 832.5 830.3 833.4 831.6 828.5 828.0 830.2 830.4 836.4 836.7 835.8 828.0 YEAR-DAY 96-12 90-10 97-29 92-18 1-25 5-28 97-16 92- 1 0- 1 96- 5 95- 6 0-15 97-16 MEAN QNH PRESSURE IN HPA 1019.1 1017.7 1017.1 1017.6 1016.4 1012.4 1010.3 1012.5 1016.0 1020.5 1021.3 1021.1 1016.8 MAX. QNH PRESSURE IN HPA 1026.9 1027.3 1027.1 1025.4 1023.7 1019.5 1018.6 1017.7 1022.2 1026.6 1028.7 1029.2 1029.2 YEAR-DAY 3-12 91-15 2-11 98-12 94-15 98-19 96- 3 99-19 4-26 93-17 3-25 98-10 98-10 MIN. QNH PRESSURE IN HPA 1007.5 1009.3 1006.7 1010.4 1008.2 1004.6 1004.0 1006.6 1006.8 1013.9 1014.2 1013.2 1004.0 YEAR-DAY 96-12 90-10 97-29 92-18 1-25 5-28 97-16 92- 1 0- 1 96- 5 95- 6 0-15 97-16 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 0.0 MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** YEAR-DAY **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** YEAR-DAY **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ZARGHAN (40847) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 29 47 N LONGITUDE 52 43 E DATA PROCESSING CENTER ELEVATION 1596.0 M CLIMATOLOGICAL NORMALS FOR THE PERIOD 1989-2005 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 1500 UTC. MEAN QFE PRESSURE IN HPA 841.3 840.1 839.4 839.7 838.4 834.9 833.0 834.9 838.1 842.3 843.2 843.1 839.0 MAX. QFE PRESSURE IN HPA 848.0 849.0 847.5 846.2 844.6 841.2 839.7 839.4 843.7 847.6 849.4 850.5 850.5 YEAR-DAY 4-11 91-15 98-26 3- 7 94-15 95- 2 96- 3 93-25 1-22 4-23 3-25 1- 8 1- 8 MIN. QFE PRESSURE IN HPA 831.5 832.8 830.9 833.2 831.9 828.8 827.2 830.0 830.4 836.4 837.1 836.7 827.2 YEAR-DAY 96-12 96-16 1-25 2- 3 1-25 5-28 95-16 4- 2 0- 1 96- 5 0- 6 97-10 95-16 MEAN QNH PRESSURE IN HPA 1019.6 1018.2 1017.4 1017.7 1016.2 1012.1 1009.9 1012.1 1015.9 1020.7 1021.8 1021.7 1016.9 MAX. QNH PRESSURE IN HPA 1027.4 1028.6 1026.8 1025.3 1023.4 1019.5 1017.7 1017.4 1022.4 1026.9 1029.0 1030.3 1030.3 YEAR-DAY 4-11 91-15 98-26 3- 7 94-15 95- 2 96- 3 93-25 1-22 4-23 3-25 1- 8 1- 8 MIN. QNH PRESSURE IN HPA 1008.1 1009.6 1007.4 1010.1 1008.6 1005.0 1003.1 1006.4 1006.8 1013.9 1014.7 1014.2 1003.1 YEAR-DAY 96-12 96-16 1-25 2- 3 1-25 5-28 95-16 4- 2 0- 1 96- 5 0- 6 97-10 95-16 MEAN QFF PRESSURE IN HPA 1020.4 1017.4 1014.2 1011.1 1006.3 998.9 994.9 997.9 1004.7 1013.6 1018.7 1021.0 1009.9 MAX. QFF PRESSURE IN HPA 1032.3 1031.7 1024.7 1018.9 1014.4 1010.0 1003.5 1005.9 1014.3 1022.0 1029.1 1031.7 1032.3 YEAR-DAY 92-10 91-15 3- 2 98-12 4- 3 95- 2 96- 3 93-25 4-30 4-23 3-25 98- 9 92-10 MIN. QFF PRESSURE IN HPA 1008.5 1007.4 1001.7 1003.9 996.6 990.5 986.8 989.9 995.3 1003.9 1010.6 1011.4 986.8 YEAR-DAY 91-25 1-21 1-25 2- 3 1-26 92-28 95-20 4- 2 0- 1 96- 5 95- 6 97-10 95-20 PRESSURE AT HOUR 1800 UTC. MEAN QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** 843.2 ****** ****** 843.2 MAX. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** 846.4 ****** ****** 846.4 YEAR-DAY **-** **-** **-** **-** **-** **-** **-** **-** **-** 90-19 **-** **-** 90-19 MIN. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** 839.7 ****** ****** 839.7 YEAR-DAY **-** **-** **-** **-** **-** **-** **-** **-** **-** 90- 1 **-** **-** 90- 1 MEAN QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** 1021.8 ****** ****** 1021.8 MAX. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** 1025.5 ****** ****** 1025.5 YEAR-DAY **-** **-** **-** **-** **-** **-** **-** **-** **-** 90-19 **-** **-** 90-19 MIN. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** 1017.7 ****** ****** 1017.7 YEAR-DAY **-** **-** **-** **-** **-** **-** **-** **-** **-** 90- 1 **-** **-** 90- 1 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** 1012.1 ****** ****** 1012.1 MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** 1017.8 ****** ****** 1017.8 YEAR-DAY **-** **-** **-** **-** **-** **-** **-** **-** **-** 90-19 **-** **-** 90-19 MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** 1007.2 ****** ****** 1007.2 YEAR-DAY **-** **-** **-** **-** **-** **-** **-** **-** **-** 90- 1 **-** **-** 90- 1 PRESSURE AT HOUR 2100 UTC. MEAN QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 0.0 MAX. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** YEAR-DAY **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** MIN. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** YEAR-DAY **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** MEAN QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 0.0 MAX. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** YEAR-DAY **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** MIN. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** YEAR-DAY **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 0.0 MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** YEAR-DAY **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** YEAR-DAY **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION ZARGHAN (40847) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) FORM 1 LATITUDE 29 47 N LONGITUDE 52 43 E DATA PROCESSING CENTER ELEVATION 1596.0 M AVERAGE OF DRY BULB TEMPERATURE IN C. YEAR JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL 1989 ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** 12.7 7.1 ****** 1990 3.9 7.3 12.5 17.6 ***** ***** ***** 30.1 26.8 19.9 13.6 9.0 ****** 1991 6.1 6.6 11.8 17.9 23.2 28.8 31.8 30.9 26.8 19.5 13.4 8.0 18.7 1992 2.6 5.9 8.8 15.2 21.1 28.2 31.5 29.7 24.9 19.4 13.5 5.7 17.2 1993 5.0 7.7 10.4 16.7 23.0 28.8 30.9 30.1 26.3 19.8 14.2 10.4 18.6 1994 7.7 8.9 11.9 18.1 22.8 29.6 32.9 31.8 24.4 19.3 12.4 5.6 18.8 1995 6.7 8.0 11.3 15.3 21.6 27.8 31.8 30.1 25.7 19.0 13.4 6.3 18.1 1996 3.0 8.8 11.2 17.0 23.4 28.8 29.4 28.9 26.2 18.8 12.7 8.9 18.1 1997 5.8 8.0 9.6 15.5 21.5 27.5 32.4 30.7 26.0 20.3 10.5 6.6 17.9 1998 4.6 7.3 11.4 16.9 23.3 28.3 31.1 30.0 26.4 20.1 14.3 10.8 18.7 1999 6.5 9.1 11.2 18.4 24.5 29.6 30.3 29.4 26.0 20.1 14.1 8.2 18.9 2000 4.3 8.3 12.6 20.4 25.5 29.1 30.5 29.8 26.0 19.7 11.0 7.7 18.7 2001 5.7 7.9 13.5 19.3 25.2 29.5 32.0 30.2 26.5 21.2 12.4 9.6 19.4 2002 5.8 8.4 13.2 16.5 24.0 28.7 31.1 30.3 26.8 20.8 12.6 7.7 18.8 2003 5.2 8.6 11.7 17.9 22.9 29.4 32.7 30.4 26.8 20.8 12.9 8.8 19.0 2004 6.9 9.9 14.8 16.4 23.4 29.1 30.5 31.0 25.7 20.2 13.8 5.1 18.9 2005 4.9 7.5 13.1 19.1 22.5 29.1 31.5 30.5 26.9 20.5 12.6 9.7 19.0 MEAN 5.3 8.0 11.8 17.4 23.2 28.8 31.4 30.2 26.1 20.0 12.9 8.0 18.6 =============================================================================================== TEHRAN 2006,MAY M.(S & A) STATION ZARGHAN (40847) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) FORM 2 LATITUDE 29 47 N LONGITUDE 52 43 E DATA PROCESSING CENTER ELEVATION 1596.0 M AVERAGE OF MINIMUM TEMPERATURE IN C. YEAR JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL 1989 ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** 3.7 -0.2 ****** 1990 -2.3 0.4 1.4 6.4 ***** ***** ***** 17.2 12.6 7.1 1.5 -0.1 ****** 1991 -0.1 -0.2 4.3 6.8 9.3 13.0 17.0 17.0 13.1 7.8 1.8 2.7 7.7 1992 -2.7 -1.8 0.4 6.1 10.4 13.2 17.0 16.6 11.0 5.5 2.1 0.3 6.5 1993 -0.9 1.1 3.2 7.0 11.2 13.9 18.1 17.4 12.3 8.2 4.1 -0.8 7.9 1994 -1.2 -2.0 3.6 7.8 11.6 14.7 19.9 18.7 12.1 8.1 4.8 -0.4 8.1 1995 -0.9 0.9 3.1 6.0 9.6 13.9 17.9 16.1 12.6 7.1 1.8 0.1 7.3 1996 -2.1 1.7 4.1 7.3 11.6 14.7 17.4 16.5 12.6 5.8 1.8 -1.0 7.5 1997 -2.3 -1.9 1.7 6.5 9.4 14.8 19.3 17.1 12.1 9.2 2.8 0.3 7.4 1998 -1.7 0.3 3.9 6.4 10.4 14.2 18.7 17.3 13.3 6.9 1.8 -0.2 7.6 1999 0.1 2.4 2.5 7.2 10.3 14.7 17.8 17.4 13.0 7.2 3.4 -1.2 7.9 2000 -1.8 -0.6 1.6 8.6 11.2 14.9 17.6 16.4 12.9 8.2 3.5 1.0 7.8 2001 -2.4 -1.5 3.0 6.7 12.1 15.0 19.5 17.0 14.0 8.6 1.2 4.3 8.1 2002 -0.8 -0.1 4.1 7.2 10.2 14.4 18.1 17.2 13.5 8.2 2.5 0.4 7.9 2003 -1.4 1.2 3.2 7.3 10.3 14.9 20.2 17.6 13.9 8.4 2.0 1.6 8.3 2004 1.4 0.7 4.2 7.0 10.5 15.5 18.5 18.0 12.7 7.7 4.6 -0.2 8.4 2005 -1.5 -0.0 4.4 8.0 10.1 14.6 18.6 17.7 13.3 7.7 4.2 1.5 8.2 MEAN -1.3 0.0 3.0 7.0 10.5 14.4 18.4 17.2 12.8 7.6 2.8 0.5 7.8 =============================================================================================== TEHRAN 2006,MAY M.(S & A) STATION ZARGHAN (40847) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) FORM 3 LATITUDE 29 47 N LONGITUDE 52 43 E DATA PROCESSING CENTER ELEVATION 1596.0 M AVERAGE OF MAXIMUM TEMPERATURE IN C. YEAR JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL 1989 ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** 17.8 11.9 ****** 1990 8.3 12.0 18.5 23.1 ***** ***** ***** 37.2 34.2 27.4 20.9 15.1 ****** 1991 10.4 11.8 16.9 23.7 29.5 35.2 38.6 37.5 33.7 25.8 20.0 12.0 24.6 1992 6.5 11.3 14.1 20.4 26.4 34.2 37.2 35.4 31.2 26.2 20.1 10.0 22.7 1993 8.7 12.0 14.9 21.9 28.4 34.7 36.3 35.8 32.7 25.9 20.4 17.2 24.1 1994 13.4 15.4 17.3 23.6 27.9 35.3 39.2 38.4 30.8 25.7 18.0 10.4 24.6 1995 12.3 12.6 16.6 21.0 27.5 33.8 38.1 36.8 32.4 26.3 21.0 10.7 24.1 1996 6.8 13.7 16.4 22.4 29.2 34.9 34.9 35.3 33.5 26.3 19.8 15.9 24.1 1997 11.5 14.3 14.9 20.8 27.5 33.7 38.9 37.6 33.1 27.1 15.7 11.4 23.9 1998 9.9 12.8 16.4 23.1 29.3 34.6 37.4 36.5 33.6 27.9 22.5 19.1 25.3 1999 11.4 14.1 16.5 24.4 30.8 36.0 36.7 35.7 33.4 28.0 21.0 15.3 25.3 2000 9.3 14.5 19.5 27.0 32.5 35.6 36.7 36.4 33.1 26.7 16.3 12.9 25.0 2001 11.8 14.5 19.9 26.4 31.4 36.0 38.1 36.8 33.5 28.8 20.1 14.0 25.9 2002 10.8 14.8 19.2 22.1 30.8 35.1 37.4 37.4 34.3 28.6 19.5 13.3 25.3 2003 10.9 14.1 17.5 23.9 29.0 36.1 38.9 37.2 33.8 28.3 20.1 14.2 25.3 2004 11.1 16.2 21.3 22.0 29.5 35.6 36.5 37.9 32.8 27.9 20.3 9.5 25.0 2005 9.9 12.6 19.0 25.3 28.5 35.4 37.7 37.1 34.1 27.9 18.3 15.7 25.1 MEAN 10.2 13.5 17.4 23.2 29.2 35.1 37.5 36.8 33.1 27.2 19.5 13.5 24.7 =============================================================================================== TEHRAN 2006,MAY M.(S & A) STATION ZARGHAN (40847) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) FORM 4 LATITUDE 29 47 N LONGITUDE 52 43 E DATA PROCESSING CENTER ELEVATION 1596.0 M DIFFERENCE BETWEEN AVERAGE MAXIMUM AND MINIMUM TEMPERATURE IN C. YEAR JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL 1989 ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** 14.1 12.1 ****** 1990 10.6 11.6 17.1 16.7 ***** ***** ***** 20.0 21.6 20.3 19.4 15.2 ****** 1991 10.5 12.0 12.6 16.9 20.2 22.2 21.6 20.5 20.6 18.0 18.2 9.3 16.9 1992 9.2 13.1 13.7 14.3 16.0 21.0 20.2 18.8 20.2 20.7 18.0 9.7 16.2 1993 9.6 10.9 11.7 14.9 17.2 20.8 18.2 18.4 20.4 17.7 16.3 18.0 16.2 1994 14.6 17.4 13.7 15.8 16.3 20.6 19.3 19.7 18.7 17.6 13.2 10.8 16.5 1995 13.2 11.7 13.5 15.0 17.9 19.9 20.2 20.7 19.8 19.2 19.2 10.6 16.8 1996 8.9 12.0 12.3 15.1 17.6 20.2 17.5 18.8 20.9 20.5 18.0 16.9 16.6 1997 13.8 16.2 13.2 14.3 18.1 18.9 19.6 20.5 21.0 17.9 12.9 11.1 16.5 1998 11.6 12.5 12.5 16.7 18.9 20.4 18.7 19.2 20.3 21.0 20.7 19.3 17.7 1999 11.3 11.7 14.0 17.2 20.5 21.3 18.9 18.3 20.4 20.8 17.6 16.5 17.4 2000 11.1 15.1 17.9 18.4 21.3 20.7 19.1 20.0 20.2 18.5 12.8 11.9 17.2 2001 14.2 16.0 16.9 19.7 19.3 21.0 18.6 19.8 19.5 20.2 18.9 9.7 17.8 2002 11.6 14.9 15.1 14.9 20.6 20.7 19.3 20.2 20.8 20.4 17.0 12.9 17.4 2003 12.3 12.9 14.3 16.6 18.7 21.2 18.7 19.6 19.9 19.9 18.1 12.6 17.0 2004 9.7 15.5 17.1 15.0 19.0 20.1 18.0 19.9 20.1 20.2 15.7 9.7 16.6 2005 11.4 12.6 14.6 17.3 18.4 20.8 19.1 19.4 20.8 20.2 14.1 14.2 16.9 MEAN 11.5 13.5 14.4 16.2 18.7 20.7 19.1 19.6 20.3 19.6 16.7 13.0 16.9 =============================================================================================== TEHRAN 2006,MAY M.(S & A) STATION ZARGHAN (40847) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) FORM 5 LATITUDE 29 47 N LONGITUDE 52 43 E DATA PROCESSING CENTER ELEVATION 1596.0 M AVERAGE OF MEAN DAILY TEMPERATURE IN C. YEAR JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL 1989 ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** 10.7 5.8 ****** 1990 3.0 6.2 10.0 14.8 ***** ***** ***** 27.2 23.4 17.3 11.2 7.5 ****** 1991 5.2 5.8 10.6 15.2 19.4 24.1 27.8 27.2 23.4 16.8 10.9 7.3 16.1 1992 1.9 4.7 7.2 13.2 18.4 23.7 27.1 26.0 21.1 15.9 11.1 5.2 14.6 1993 3.9 6.6 9.1 14.4 19.8 24.3 27.2 26.6 22.5 17.0 12.2 8.2 16.0 1994 6.1 6.7 10.4 15.7 19.8 25.0 29.6 28.5 21.4 16.9 11.4 5.0 16.4 1995 5.7 6.8 9.8 13.5 18.5 23.8 28.0 26.4 22.5 16.7 11.4 5.4 15.7 1996 2.4 7.7 10.2 14.9 20.4 24.8 26.2 25.9 23.0 16.1 10.8 7.4 15.8 1997 4.6 6.2 8.3 13.7 18.4 24.2 29.1 27.4 22.6 18.1 9.3 5.8 15.6 1998 4.1 6.5 10.2 14.7 19.8 24.4 28.1 26.9 23.4 17.4 12.1 9.4 16.4 1999 5.8 8.2 9.5 15.8 20.6 25.4 27.2 26.6 23.2 17.6 12.2 7.0 16.6 2000 3.7 6.9 10.5 17.8 21.9 25.3 27.1 26.4 23.0 17.4 9.9 6.9 16.4 2001 4.7 6.5 11.4 16.5 21.7 25.5 28.8 26.9 23.7 18.7 10.7 9.2 17.0 2002 5.0 7.3 11.6 14.6 20.5 24.8 27.7 27.3 23.9 18.4 11.0 6.9 16.6 2003 4.7 7.7 10.4 15.6 19.6 25.5 29.6 27.4 23.9 18.3 11.0 7.9 16.8 2004 6.3 8.4 12.8 14.5 20.0 25.6 27.5 28.0 22.7 17.8 12.4 4.7 16.7 2005 4.2 6.3 11.7 16.7 19.3 25.0 28.2 27.4 23.7 17.8 11.3 8.6 16.7 MEAN 4.5 6.8 10.2 15.1 19.9 24.8 27.9 27.0 23.0 17.4 11.2 7.0 16.2 SD 1.27 0.94 1.34 1.22 1.05 0.63 0.97 0.69 0.82 0.81 0.82 1.46 1.00 =============================================================================================== TEHRAN 2006,MAY M.(S & A) STATION ZARGHAN (40847) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) FORM 6 LATITUDE 29 47 N LONGITUDE 52 43 E DATA PROCESSING CENTER ELEVATION 1596.0 M TEMPERATURE RECORDS LOWEST IN C. YEAR JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL 1989 ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** -1.5 -4.5 ****** DAY ** ** ** ** ** ** ** ** ** ** 24 26 1990 -7.0 -5.2 -4.0 -0.8 ***** ***** ***** 12.0 9.8 2.5 -1.4 -5.4 ****** DAY 26 27 1 6 ** ** ** 16 29 31 21 29 1991 -6.0 -5.8 -1.8 2.2 3.6 8.5 13.8 10.8 7.8 3.2 -1.6 -4.0 -6.0 DAY 7 16 8 14 24 1 15 25 28 31 28 30 1992 -13.6 -8.4 -6.6 0.0 5.0 9.5 13.0 11.3 6.0 1.0 -4.6 -4.8 -13.6 DAY 29 13 12 8 8 21 11 23 12 29 29 10 1993 -6.8 -6.0 -1.8 2.2 2.8 7.6 14.4 14.4 6.0 4.8 -2.4 -3.6 -6.8 DAY 18 8 13 1 8 5 1 4 30 9 30 7 1994 -7.0 -6.6 -1.0 2.6 6.0 8.0 12.0 14.0 6.0 3.6 0.0 -5.6 -7.0 DAY 11 21 3 4 3 6 1 21 23 13 14 27 1995 -5.2 -3.0 -1.4 2.0 2.8 10.0 12.8 12.6 8.0 0.4 -5.6 -3.8 -5.6 DAY 23 11 28 1 11 1 2 10 24 16 28 19 1996 -9.2 -3.2 0.0 2.0 7.0 10.5 13.5 11.6 8.2 -0.1 -2.0 -4.4 -9.2 DAY 16 14 15 5 1 8 17 5 20 26 13 4 1997 -5.8 -8.4 -5.5 0.0 4.4 9.4 13.5 11.0 8.6 2.6 -2.0 -2.8 -8.4 DAY 4 8 1 12 6 5 4 30 15 28 25 28 1998 -8.2 -5.2 -2.0 0.8 4.8 11.6 16.0 13.8 9.6 3.0 -0.8 -4.0 -8.2 DAY 14 24 6 6 3 2 5 15 20 28 27 9 1999 -7.2 -3.8 -2.2 2.0 6.2 11.6 15.0 12.2 7.0 3.5 -4.0 -4.2 -7.2 DAY 5 1 8 10 6 15 17 29 25 23 30 31 2000 -10.4 -5.2 -4.4 2.8 8.6 11.0 13.0 13.4 8.6 5.0 -1.0 -4.0 -10.4 DAY 20 4 4 1 13 26 21 21 22 30 23 18 2001 -10.6 -5.6 0.0 0.4 6.6 11.0 13.2 12.8 11.2 6.2 -4.2 -1.0 -10.6 DAY 29 1 2 15 7 14 31 17 28 18 20 3 2002 -6.2 -5.4 0.4 2.0 3.4 11.6 15.4 14.4 9.4 3.0 -3.4 -6.8 -6.8 DAY 26 6 24 23 7 8 2 31 30 25 24 23 2003 -5.4 -3.6 -4.2 2.8 2.6 11.6 14.4 14.4 10.4 5.0 -4.0 -3.0 -5.4 DAY 18 6 2 30 1 8 3 30 29 27 18 15 2004 -4.4 -3.0 -3.4 1.4 6.0 10.8 14.6 15.2 5.4 3.4 -2.4 -6.0 -6.0 DAY 22 9 17 19 15 4 20 15 29 24 30 30 2005 -5.6 -6.4 -1.6 1.2 5.0 11.4 14.6 13.2 8.6 3.4 -2.8 -2.6 -6.4 DAY 27 10 27 6 7 3 1 19 30 25 11 28 1989-2005 -13.6 -8.4 -6.6 -0.8 2.6 7.6 12.0 10.8 5.4 -0.1 -5.6 -6.8 -13.6 YEAR-DAY 92-29 92-13 92-12 90- 6 3- 1 93- 5 94- 1 91-25 4-29 96-26 95-28 2-23 92 =============================================================================================== TEHRAN 2006,MAY M.(S & A) STATION ZARGHAN (40847) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) FORM 7 LATITUDE 29 47 N LONGITUDE 52 43 E DATA PROCESSING CENTER ELEVATION 1596.0 M TEMPERATURE RECORDS HIGHEST IN C. YEAR JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL 1989 ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** 24.4 18.2 ****** DAY ** ** ** ** ** ** ** ** ** ** 1 1 1990 14.0 16.8 25.5 28.8 ***** ***** ***** 39.6 36.6 31.2 24.8 19.8 ****** DAY 23 18 13 14 ** ** ** 13 2 5 4 8 1991 14.5 16.8 23.5 29.6 35.0 37.4 41.0 39.8 38.4 29.0 24.8 17.0 41.0 DAY 24 28 22 28 31 28 11 9 10 11 2 5 1992 12.0 17.5 19.5 26.4 32.0 38.6 39.4 38.0 32.5 30.3 23.5 16.5 39.4 DAY 16 23 30 22 30 30 7 1 20 4 2 2 1993 16.8 19.5 19.0 27.0 33.6 37.2 38.5 37.6 35.5 30.5 25.5 19.5 38.5 DAY 29 28 30 20 28 18 15 15 4 1 1 2 1994 21.0 20.0 23.2 29.0 33.2 37.8 43.8 41.4 36.8 29.7 24.4 16.6 43.8 DAY 2 27 31 28 30 26 13 6 1 1 2 3 1995 16.6 17.0 21.0 26.0 29.8 37.0 41.0 38.0 36.4 30.2 25.5 16.0 41.0 DAY 11 22 25 19 21 13 17 7 1 1 1 2 1996 14.8 20.6 20.0 25.5 34.6 36.2 37.4 36.5 36.7 32.0 26.2 18.0 37.4 DAY 31 10 19 27 31 4 11 23 11 1 1 29 1997 17.0 21.0 19.8 26.2 32.5 36.8 41.0 40.5 35.6 31.2 21.0 15.4 41.0 DAY 12 21 3 27 28 16 21 1 6 5 1 9 1998 14.0 18.0 25.5 27.6 34.0 37.0 42.2 39.2 36.5 32.5 24.2 20.8 42.2 DAY 1 5 29 21 28 30 11 20 3 1 3 23 1999 19.5 17.6 23.6 30.2 35.8 38.2 39.8 37.2 37.0 30.5 25.0 20.6 39.8 DAY 1 20 26 21 31 28 6 31 1 5 2 8 2000 17.6 19.8 25.2 30.0 36.2 39.5 39.8 38.6 36.0 30.8 25.8 20.6 39.8 DAY 5 26 23 15 31 30 10 4 9 1 1 1 2001 15.6 20.0 25.0 29.0 35.6 38.6 40.8 38.6 36.6 32.8 26.6 18.0 40.8 DAY 1 28 31 25 16 29 12 8 1 1 5 20 2002 14.6 19.2 23.2 30.6 34.2 37.2 40.0 39.0 36.6 32.0 25.6 16.6 40.0 DAY 1 24 26 28 20 17 20 9 3 7 12 6 2003 16.6 19.0 21.5 28.5 32.2 39.6 40.5 40.0 36.0 32.0 26.8 19.6 40.5 DAY 15 23 25 10 31 24 10 1 2 1 1 19 2004 15.0 22.5 26.0 28.0 33.6 37.5 39.0 40.5 36.0 31.5 24.8 16.2 40.5 DAY 25 14 10 22 22 27 28 17 7 12 8 6 2005 17.4 20.6 24.0 30.4 31.5 39.8 40.6 40.5 36.8 30.5 25.8 20.5 40.6 DAY 3 21 31 24 29 26 17 9 9 1 3 6 1989-2005 21.0 22.5 26.0 30.6 36.2 39.8 43.8 41.4 38.4 32.8 26.8 20.8 43.8 YEAR-DAY 94- 2 4-14 4-10 2-28 0-31 5-26 94-13 94- 6 91-10 1- 1 3- 1 98-23 94 =============================================================================================== TEHRAN 2006,MAY M.(S & A) STATION ZARGHAN (40847) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) FORM 8 LATITUDE 29 47 N LONGITUDE 52 43 E DATA PROCESSING CENTER ELEVATION 1596.0 M 0C COOLING DEGREE DAYS (BASE 21) YEAR JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL 1989 ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** 0.0 0.0 ****** 1990 0.0 0.0 0.0 0.0 ***** ***** ***** 192.9 73.3 0.2 0.0 0.0 ****** 1991 0.0 0.0 0.0 0.0 11.9 92.9 211.2 193.2 80.4 0.0 0.0 0.0 589.7 1992 0.0 0.0 0.0 0.0 5.3 81.4 188.4 155.6 20.5 0.0 0.0 0.0 451.2 1993 0.0 0.0 0.0 0.0 17.5 102.2 193.4 174.1 56.1 0.0 0.0 0.0 543.5 1994 0.0 0.0 0.0 0.0 17.4 121.0 265.4 233.9 40.8 0.0 0.0 0.0 678.7 1995 0.0 0.0 0.0 0.0 1.3 90.7 216.6 168.4 58.2 0.0 0.0 0.0 535.3 1996 0.0 0.0 0.0 0.0 19.3 113.6 160.3 151.6 66.7 0.5 0.0 0.0 512.2 1997 0.0 0.0 0.0 0.0 4.9 97.7 250.5 197.8 50.1 2.5 0.0 0.0 603.6 1998 0.0 0.0 0.0 0.0 12.8 102.4 218.8 183.1 73.7 1.1 0.0 0.0 592.0 1999 0.0 0.0 0.0 0.0 14.9 131.7 193.5 173.0 77.3 0.0 0.0 0.0 590.6 2000 0.0 0.0 0.0 1.5 35.2 128.1 190.5 166.0 64.5 0.4 0.0 0.0 586.3 2001 0.0 0.0 0.0 0.0 42.3 134.4 241.8 182.7 81.9 1.5 0.0 0.0 684.6 2002 0.0 0.0 0.0 0.0 21.2 113.6 208.6 194.5 87.8 1.8 0.0 0.0 627.7 2003 0.0 0.0 0.0 0.0 7.8 134.0 265.1 197.2 86.4 2.0 0.0 0.0 692.7 2004 0.0 0.0 0.0 0.0 15.2 137.4 201.0 215.9 66.4 0.6 0.0 0.0 636.7 2005 0.0 0.0 0.0 1.2 3.2 120.5 222.7 198.0 83.9 0.0 0.0 0.0 629.6 MEAN 0.0 0.0 0.0 0.2 15.4 113.5 215.2 186.1 66.8 0.7 0.0 0.0 597.9 =============================================================================================== TEHRAN 2006,MAY M.(S & A) STATION ZARGHAN (40847) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) FORM 9 LATITUDE 29 47 N LONGITUDE 52 43 E DATA PROCESSING CENTER ELEVATION 1596.0 M 0C HEATING DEGREE DAYS (BASE 18) YEAR JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL 1989 ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** 217.5 377.2 ****** 1990 463.8 331.5 249.1 104.0 ***** ***** ***** 0.0 0.0 37.6 204.5 324.6 ****** 1991 397.3 341.6 230.0 86.2 11.9 0.0 0.0 0.0 0.1 42.6 213.1 330.5 1653.3 1992 497.7 385.0 333.5 144.2 26.9 0.0 0.0 0.0 0.5 70.3 207.6 397.9 2063.6 1993 436.1 319.8 277.3 107.5 13.2 0.0 0.0 0.0 0.3 41.2 172.6 304.1 1672.0 1994 368.7 316.6 234.6 76.9 11.9 0.0 0.0 0.0 3.9 42.9 198.5 404.0 1657.9 1995 380.8 314.7 253.2 134.8 15.0 0.0 0.0 0.0 0.0 54.3 198.5 389.4 1740.5 1996 485.0 298.2 240.3 96.9 3.0 0.0 0.0 0.0 0.0 72.9 216.1 327.3 1739.7 1997 414.6 330.0 300.9 129.6 24.4 0.0 0.0 0.0 0.0 32.3 261.2 377.0 1870.1 1998 432.2 321.3 242.7 98.5 14.5 0.0 0.0 0.0 0.0 41.4 176.5 265.2 1592.3 1999 379.0 273.3 264.0 71.7 1.4 0.0 0.0 0.0 0.0 28.0 174.2 339.8 1531.3 2000 443.0 321.0 231.6 29.4 0.0 0.0 0.0 0.0 0.0 28.1 243.1 342.7 1638.8 2001 411.7 322.6 204.5 53.0 0.4 0.0 0.0 0.0 0.0 6.4 219.7 274.3 1492.7 2002 403.3 298.3 197.1 108.7 6.3 0.0 0.0 0.0 0.0 25.2 209.9 344.8 1593.6 2003 410.8 289.7 235.9 73.7 12.3 0.0 0.0 0.0 0.0 15.1 208.5 313.6 1559.6 2004 363.6 277.6 162.4 106.8 8.2 0.0 0.0 0.0 0.8 35.4 167.1 413.5 1535.3 2005 427.5 328.3 196.7 56.3 15.6 0.0 0.0 0.0 0.0 27.9 201.5 290.0 1543.7 MEAN 419.7 316.9 240.9 92.4 11.0 0.0 0.0 0.0 0.3 37.6 205.3 342.1 1666.2 =============================================================================================== TEHRAN 2006,MAY M.(S & A) STATION ZARGHAN (40847) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) FORM 10 LATITUDE 29 47 N LONGITUDE 52 43 E DATA PROCESSING CENTER ELEVATION 1596.0 M AVERAGE OF DEW POINT TEMPERATURE IN C. YEAR JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL 1989 ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** 1.2 -0.3 ****** 1990 -2.4 -1.8 -3.0 -0.7 ***** ***** ***** 1.9 -1.8 -2.8 -5.0 -2.8 ****** 1991 -0.7 -3.0 2.0 3.0 -0.1 4.0 6.7 2.5 0.3 0.6 -3.9 2.0 1.1 1992 -3.1 -5.0 -3.9 1.2 5.5 3.4 5.6 3.9 -0.4 -1.7 -2.3 1.0 0.4 1993 -1.1 0.0 0.6 3.0 5.6 7.0 5.8 5.0 1.1 -0.3 -0.6 -4.6 1.8 1994 -3.7 -7.3 0.3 3.4 5.4 ***** ***** ***** ***** ***** ***** ***** ****** 1995 -0.6 0.3 1.4 5.7 6.5 7.8 5.8 1.4 2.3 0.9 -2.7 0.8 2.5 1996 -1.3 0.4 2.4 4.6 5.7 5.1 7.2 7.4 2.2 -0.3 -2.1 -2.8 2.4 1997 -3.2 -6.9 -0.7 3.7 3.8 5.9 7.6 5.9 5.7 4.9 3.4 1.2 2.6 1998 -1.3 -0.8 2.6 4.6 4.7 4.7 6.4 5.2 2.5 -2.1 -4.8 -3.8 1.5 1999 -0.3 2.5 -0.0 1.5 1.3 1.9 7.1 5.6 4.5 1.1 -1.6 -3.0 1.7 2000 -2.5 -4.4 -6.1 1.0 -0.3 -1.9 -1.5 0.4 -1.6 -0.5 2.4 0.3 -1.2 2001 -3.5 -4.3 0.7 1.2 2.9 1.7 3.5 0.6 -0.4 -1.3 -3.5 5.0 0.2 2002 -2.1 -2.7 0.6 4.4 1.6 -0.5 1.3 1.4 1.1 -2.4 -1.8 -0.9 -0.0 2003 -1.6 -0.5 1.0 4.3 1.4 -0.4 2.6 2.6 0.3 -2.0 -5.1 0.9 0.3 2004 0.8 -1.9 -0.2 5.0 1.7 3.5 1.7 3.0 0.8 -2.0 0.8 -0.1 1.1 2005 -1.9 -1.9 0.4 2.3 1.7 1.6 4.2 4.0 0.9 0.9 2.6 0.7 1.3 MEAN -1.8 -2.3 -0.1 3.0 3.1 3.1 4.6 3.4 1.2 -0.5 -1.4 -0.4 1.0 =============================================================================================== TEHRAN 2006,MAY M.(S & A) STATION ZARGHAN (40847) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) FORM 11 LATITUDE 29 47 N LONGITUDE 52 43 E DATA PROCESSING CENTER ELEVATION 1596.0 M AVERAGE OF MIXING RATIO IN G/KG YEAR JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL 1989 ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** 5.35 4.63 ***** 1990 3.95 4.26 3.88 4.62 ***** ***** ***** 5.41 4.17 3.77 3.31 3.80 ***** 1991 4.61 4.03 5.56 5.84 4.76 6.25 7.59 5.77 4.78 4.98 3.46 5.43 5.26 1992 3.80 3.39 3.81 5.26 6.99 6.06 7.06 6.23 4.62 4.27 4.00 5.02 5.04 1993 4.38 4.88 5.04 5.86 6.96 7.91 7.06 6.76 5.25 4.64 4.57 3.33 5.55 1994 3.60 2.80 4.92 6.00 6.88 ***** ***** ***** ***** ***** ***** ***** ***** 1995 4.47 4.84 5.26 7.01 7.40 8.20 7.23 5.28 5.46 5.12 3.89 4.90 5.75 1996 4.30 4.87 5.66 6.59 6.97 6.75 7.80 7.92 5.47 4.62 4.04 3.78 5.73 1997 3.67 2.99 4.59 6.27 6.09 7.18 8.04 7.13 6.99 6.66 5.95 5.04 5.88 1998 4.25 4.57 5.83 6.54 6.52 6.53 7.36 6.84 5.59 3.98 3.26 3.55 5.40 1999 4.67 5.70 4.77 5.31 5.20 5.44 7.79 6.96 6.52 5.01 4.30 3.79 5.46 2000 3.96 3.45 3.36 5.14 4.72 4.16 4.41 4.92 4.22 4.67 5.52 4.80 4.44 2001 3.62 3.49 4.93 5.09 5.80 5.40 6.17 5.04 4.54 4.24 3.76 6.62 4.89 2002 4.11 4.08 4.98 6.49 5.35 4.60 5.16 5.21 5.06 3.90 4.19 4.47 4.80 2003 4.18 4.64 5.22 6.42 5.17 4.63 5.72 5.85 4.72 3.99 3.32 4.99 4.90 2004 5.03 4.14 4.64 6.71 5.37 6.06 5.40 5.86 4.98 4.02 4.95 4.70 5.16 2005 4.08 4.19 5.08 5.64 5.33 5.27 6.45 6.27 5.01 4.92 5.77 4.86 5.24 MEAN 4.17 4.15 4.84 5.92 5.97 6.03 6.66 6.10 5.16 4.59 4.35 4.61 5.21 =============================================================================================== TEHRAN 2006,MAY M.(S & A) STATION ZARGHAN (40847) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) FORM 12 LATITUDE 29 47 N LONGITUDE 52 43 E DATA PROCESSING CENTER ELEVATION 1596.0 M AVERAGE OF VAPOUR PRESSURE IN HPA YEAR JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL 1989 ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** 7.19 6.23 ***** 1990 5.31 5.70 5.21 6.18 ***** ***** ***** 7.20 5.58 5.08 4.47 5.11 ***** 1991 6.19 5.41 7.43 7.82 6.36 8.31 10.04 7.67 6.40 6.70 4.67 7.28 7.02 1992 5.10 4.54 5.10 7.04 9.34 8.06 9.36 8.29 6.19 5.73 5.39 6.74 6.74 1993 5.88 6.55 6.76 7.84 9.29 10.49 9.37 9.00 7.01 6.25 6.14 4.49 7.42 1994 4.84 3.76 6.59 8.04 9.18 ***** ***** ***** ***** ***** ***** ***** ***** 1995 6.02 6.48 7.05 9.36 9.89 10.87 9.56 7.03 7.30 6.87 5.23 6.58 7.69 1996 5.77 6.53 7.55 8.81 9.31 8.98 10.35 10.51 7.31 6.22 5.44 5.10 7.66 1997 4.93 4.02 6.14 8.37 8.15 9.54 10.63 9.47 9.33 8.94 7.99 6.77 7.86 1998 5.71 6.13 7.80 8.75 8.71 8.70 9.76 9.10 7.48 5.36 4.40 4.79 7.22 1999 6.27 7.64 6.38 7.11 6.96 7.25 10.31 9.26 8.70 6.74 5.79 5.12 7.29 2000 5.32 4.64 4.50 6.88 6.31 5.55 5.87 6.56 5.65 6.28 7.41 6.46 5.95 2001 4.88 4.69 6.61 6.82 7.74 7.17 8.18 6.73 6.09 5.71 5.06 8.90 6.55 2002 5.52 5.48 6.68 8.67 7.16 6.14 6.88 6.94 6.78 5.25 5.64 6.00 6.43 2003 5.62 6.23 6.98 8.59 6.93 6.18 7.59 7.78 6.32 5.38 4.48 6.71 6.57 2004 6.74 5.57 6.24 8.96 7.18 8.06 7.19 7.80 6.67 5.43 6.66 6.32 6.90 2005 5.48 5.61 6.80 7.56 7.13 7.02 8.57 8.35 6.70 6.62 7.75 6.54 7.01 MEAN 5.60 5.56 6.49 7.93 7.98 8.02 8.83 8.11 6.90 6.17 5.86 6.20 6.97 =============================================================================================== TEHRAN 2006,MAY M.(S & A) STATION ZARGHAN (40847) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) FORM 13 LATITUDE 29 47 N LONGITUDE 52 43 E DATA PROCESSING CENTER ELEVATION 1596.0 M AVERAGE OF SATURATION DEFICIT PRESSURE IN HPA YEAR JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL 1989 ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** 8.28 4.28 ***** 1990 3.12 4.94 10.29 15.39 ***** ***** ***** 38.02 32.32 19.85 12.49 7.17 ***** 1991 3.56 4.79 7.12 14.02 23.60 33.59 39.82 39.57 31.33 17.27 11.81 3.85 19.19 1992 2.58 5.26 6.79 11.20 16.86 32.28 38.95 35.40 27.42 18.54 11.20 2.78 17.44 1993 3.17 4.35 6.34 12.05 20.30 31.36 37.25 35.56 29.55 18.23 11.05 9.00 18.18 1994 6.41 8.40 7.98 13.95 19.96 ***** ***** ***** ***** ***** ***** ***** ***** 1995 4.28 4.63 6.95 8.87 17.30 28.79 40.30 38.56 27.96 16.91 11.58 3.24 17.45 1996 2.19 5.22 6.21 11.58 21.02 32.65 32.49 31.31 29.27 17.32 10.31 7.02 17.22 1997 4.82 7.48 6.36 10.09 19.04 29.25 40.89 37.54 26.68 16.60 5.25 3.35 17.28 1998 3.17 4.61 6.30 11.74 21.58 31.97 37.84 35.78 29.25 20.17 13.26 9.25 18.74 1999 3.80 4.34 7.72 15.30 25.71 36.70 35.21 33.79 27.33 18.64 11.35 6.56 18.87 2000 3.55 7.05 11.21 18.67 28.37 37.26 40.23 37.91 30.29 18.20 6.41 4.50 20.30 2001 4.82 6.66 9.80 17.11 26.24 36.63 41.86 38.94 30.83 21.37 10.67 3.40 20.69 2002 4.01 6.19 9.30 11.43 24.86 35.52 40.79 39.02 31.10 21.37 9.92 5.05 19.88 2003 3.74 5.47 7.58 13.16 22.55 37.53 44.24 38.34 31.35 21.04 11.63 5.13 20.15 2004 3.47 7.35 11.79 10.67 23.44 34.51 38.63 39.94 28.79 20.12 10.11 2.82 19.31 2005 3.55 5.33 9.04 16.03 21.72 35.88 40.36 37.89 31.32 19.35 7.79 6.20 19.54 MEAN 3.77 5.75 8.17 13.20 22.17 33.85 39.20 37.17 29.65 19.00 10.19 5.23 18.95 =============================================================================================== TEHRAN 2006,MAY M.(S & A) STATION ZARGHAN (40847) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) FORM 14 LATITUDE 29 47 N LONGITUDE 52 43 E DATA PROCESSING CENTER ELEVATION 1596.0 M AVERAGE OF RELATIVE HUMIDITY IN PERCENT YEAR JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL 1989 *** *** *** *** *** *** *** *** *** *** 53 64 *** 1990 67 58 40 34 *** *** *** 19 18 25 33 49 *** 1991 66 57 56 42 25 23 23 19 21 33 33 69 39 1992 68 51 47 44 41 24 22 22 21 27 38 75 40 1993 68 63 56 45 36 28 23 24 23 31 41 38 40 1994 50 36 51 42 37 *** *** *** *** *** *** *** *** 1995 64 62 56 57 41 31 23 19 25 36 37 70 43 1996 76 60 59 49 36 25 27 29 24 32 41 48 42 1997 57 41 54 50 35 28 24 24 30 40 65 71 43 1998 68 61 59 49 33 25 24 24 25 26 30 39 39 1999 66 68 51 37 26 20 27 25 29 32 39 50 39 2000 67 46 33 32 23 17 15 18 20 32 60 64 36 2001 56 48 46 33 27 20 19 18 20 26 40 75 36 2002 61 52 47 50 28 19 17 19 22 24 41 58 37 2003 67 58 53 47 28 18 17 20 20 25 33 61 37 2004 69 50 41 51 28 22 19 19 23 27 45 72 39 2005 65 57 48 37 29 20 21 22 22 31 57 57 39 MEAN 65 54 50 44 32 23 22 21 23 30 43 60 38 =============================================================================================== TEHRAN 2006,MAY M.(S & A) STATION ZARGHAN (40847) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) FORM 15 LATITUDE 29 47 N LONGITUDE 52 43 E DATA PROCESSING CENTER ELEVATION 1596.0 M AVERAGE OF MAXIMUM RELATIVE HUMIDITY IN PERCENT YEAR JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL 1989 *** *** *** *** *** *** *** *** *** *** 77 87 *** 1990 88 82 72 61 *** *** *** 37 42 51 58 77 *** 1991 85 81 83 74 51 45 44 40 42 60 57 87 62 1992 85 77 77 71 65 45 43 40 40 48 62 89 62 1993 86 84 83 75 64 49 44 46 52 53 68 62 64 1994 72 61 76 71 62 *** *** *** *** *** *** *** *** 1995 87 87 85 83 73 56 46 44 48 64 69 89 69 1996 90 82 83 77 65 48 48 52 46 58 66 74 66 1997 80 73 80 78 64 53 43 45 50 66 87 91 68 1998 89 84 83 82 61 48 45 47 49 51 55 62 63 1999 85 90 80 69 52 43 50 45 54 57 66 76 64 2000 83 76 61 60 46 38 33 38 43 60 85 86 59 2001 81 75 76 61 50 40 35 36 39 48 65 92 58 2002 82 79 76 78 55 42 36 38 45 47 68 82 61 2003 89 83 81 79 57 41 34 43 40 50 57 84 62 2004 88 79 71 78 55 45 38 37 45 52 70 90 62 2005 84 83 76 67 58 44 43 43 44 57 80 82 63 MEAN 85 80 78 73 59 46 42 42 45 55 68 82 63 =============================================================================================== TEHRAN 2006,MAY M.(S & A) STATION ZARGHAN (40847) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) FORM 16 LATITUDE 29 47 N LONGITUDE 52 43 E DATA PROCESSING CENTER ELEVATION 1596.0 M AVERAGE OF MINIMUM RELATIVE HUMIDITY IN PERCENT YEAR JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL 1989 *** *** *** *** *** *** *** *** *** *** 37 45 *** 1990 50 42 22 21 *** *** *** 10 9 12 20 29 *** 1991 51 36 36 25 14 15 15 10 11 19 20 53 25 1992 53 33 29 28 26 14 15 14 13 17 24 61 27 1993 54 47 40 27 23 19 15 14 11 19 24 23 26 1994 32 19 33 26 23 *** *** *** *** *** *** *** *** 1995 44 44 37 40 25 21 13 9 14 21 19 55 29 1996 62 43 40 33 20 16 19 18 13 18 26 29 28 1997 39 21 36 32 22 18 16 13 20 26 47 54 29 1998 50 44 40 30 20 15 14 13 13 13 16 23 24 1999 49 49 33 21 13 10 15 14 16 17 21 32 24 2000 51 25 16 16 11 8 8 9 9 17 42 44 21 2001 35 28 28 19 16 11 12 9 11 13 23 59 22 2002 42 32 28 32 14 9 9 9 11 12 24 38 22 2003 47 39 34 29 15 9 10 10 11 12 18 43 23 2004 53 30 23 35 16 13 10 11 12 13 28 56 25 2005 47 39 29 21 16 11 12 12 11 18 40 37 24 MEAN 47 36 32 27 18 14 13 12 12 16 27 43 25 RH=0 =====> RELATIVE HUMIDITY < 0.5% =============================================================================================== TEHRAN 2006,MAY M.(S & A) STATION ZARGHAN (40847) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) FORM 17 LATITUDE 29 47 N LONGITUDE 52 43 E DATA PROCESSING CENTER ELEVATION 1596.0 M AVERAGE OF RELATIVE HUMIDITY AT 03 UTC. IN PERCENT YEAR JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL 1989 *** *** *** *** *** *** *** *** *** *** 76 86 *** 1990 87 82 72 60 *** *** *** 37 42 51 58 76 *** 1991 84 81 82 74 51 45 44 40 42 60 57 84 62 1992 82 76 76 70 65 45 43 40 40 46 62 88 61 1993 84 80 81 75 64 49 44 45 52 53 68 62 63 1994 70 59 75 71 61 *** *** *** *** *** *** *** *** 1995 85 86 84 83 73 56 46 44 48 65 69 88 69 1996 88 80 82 76 65 48 48 52 46 58 66 73 65 1997 77 71 78 78 63 53 43 45 50 65 86 90 67 1998 88 82 81 82 60 48 45 47 49 51 55 61 62 1999 83 86 79 69 52 43 50 45 54 57 65 75 63 2000 82 75 59 60 46 38 33 38 43 60 83 85 59 2001 79 74 75 61 50 40 35 36 39 48 64 89 58 2002 79 78 75 77 55 41 36 38 45 47 66 81 60 2003 86 82 80 78 57 41 34 43 40 50 56 82 61 2004 87 79 71 77 55 45 37 37 45 52 69 88 62 2005 82 82 76 66 58 44 43 43 44 57 79 81 63 MEAN 83 78 77 72 58 45 42 42 45 55 67 81 62 =============================================================================================== TEHRAN 2006,MAY M.(S & A) STATION ZARGHAN (40847) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) FORM 18 LATITUDE 29 47 N LONGITUDE 52 43 E DATA PROCESSING CENTER ELEVATION 1596.0 M AVERAGE OF RELATIVE HUMIDITY AT 09 UTC. IN PERCENT YEAR JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL 1989 *** *** *** *** *** *** *** *** *** *** 43 53 *** 1990 58 50 28 25 *** *** *** 11 10 15 23 37 *** 1991 56 47 44 29 17 16 17 12 13 22 24 61 30 1992 62 41 34 34 33 16 15 15 15 22 27 69 32 1993 63 55 46 33 27 21 16 16 13 22 30 28 31 1994 41 25 44 31 28 *** *** *** *** *** *** *** *** 1995 56 53 46 48 30 23 14 10 16 25 24 60 34 1996 69 51 52 38 25 18 20 21 15 22 30 37 33 1997 48 30 44 40 23 21 17 15 23 29 53 62 34 1998 61 54 49 38 24 17 16 17 15 16 20 28 30 1999 56 59 41 25 16 12 18 16 19 21 28 38 29 2000 59 35 24 22 15 9 9 11 11 20 47 53 26 2001 45 39 36 23 19 13 13 11 13 17 29 68 27 2002 52 41 35 39 18 10 11 12 13 15 31 46 27 2003 58 48 43 37 18 10 11 13 13 15 22 50 28 2004 59 37 30 42 19 15 12 13 14 16 33 67 30 2005 56 47 38 28 21 13 14 14 14 20 47 46 30 MEAN 56 45 40 33 22 15 15 14 14 20 32 50 30 =============================================================================================== TEHRAN 2006,MAY M.(S & A) STATION ZARGHAN (40847) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) FORM 19 LATITUDE 29 47 N LONGITUDE 52 43 E DATA PROCESSING CENTER ELEVATION 1596.0 M AVERAGE OF RELATIVE HUMIDITY AT 15 UTC. IN PERCENT YEAR JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL 1989 *** *** *** *** *** *** *** *** *** *** 48 60 *** 1990 66 54 32 27 *** *** *** 14 15 20 29 44 *** 1991 63 50 49 36 19 19 19 15 18 28 28 68 34 1992 69 43 40 38 33 19 18 17 17 21 33 73 35 1993 65 60 49 36 29 23 18 19 17 26 34 32 34 1994 44 30 41 33 31 *** *** *** *** *** *** *** *** 1995 60 55 46 49 36 27 18 14 19 31 32 71 38 1996 77 55 54 42 30 20 23 24 21 29 38 43 38 1997 53 31 49 44 32 23 19 20 25 34 63 69 39 1998 64 53 54 42 27 21 19 16 19 21 26 37 33 1999 63 65 43 30 20 15 20 21 21 26 34 46 34 2000 65 36 25 23 15 11 11 12 14 25 58 60 30 2001 51 39 36 25 21 15 14 13 15 20 36 74 30 2002 58 45 40 43 20 13 12 12 16 19 35 54 31 2003 65 50 43 36 23 13 13 14 15 20 29 58 32 2004 65 42 33 45 22 16 14 14 17 20 43 70 33 2005 63 50 38 28 21 15 14 16 15 24 57 55 33 MEAN 62 47 42 36 25 18 17 16 18 24 39 57 33 =============================================================================================== TEHRAN 2006,MAY M.(S & A) STATION ZARGHAN (40847) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) FORM 20 LATITUDE 29 47 N LONGITUDE 52 43 E DATA PROCESSING CENTER ELEVATION 1596.0 M NO. OF DAYS WITH MAXIMUM TEMPERATURE EQUAL 30 AND ABOVE YEAR JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL 1989 *** *** *** *** *** *** *** *** *** *** 0 0 *** 1990 0 0 0 0 *** *** *** 31 30 8 0 0 *** 1991 0 0 0 0 14 30 31 31 26 0 0 0 132 1992 0 0 0 0 6 30 31 31 25 1 0 0 124 1993 0 0 0 0 13 30 31 31 27 2 0 0 134 1994 0 0 0 0 10 30 31 31 17 0 0 0 119 1995 0 0 0 0 0 25 31 31 27 2 0 0 116 1996 0 0 0 0 9 30 30 31 28 2 0 0 130 1997 0 0 0 0 6 29 31 31 30 9 0 0 136 1998 0 0 0 0 16 30 31 31 30 8 0 0 146 1999 0 0 0 1 22 30 31 31 27 2 0 0 144 2000 0 0 0 2 29 30 31 31 30 1 0 0 154 2001 0 0 0 0 21 30 31 31 30 7 0 0 150 2002 0 0 0 2 20 30 31 31 30 11 0 0 155 2003 0 0 0 0 11 30 31 31 30 5 0 0 138 2004 0 0 0 0 15 30 31 31 25 9 0 0 141 2005 0 0 0 1 11 30 31 31 30 7 0 0 141 MEAN 0.0 0.0 0.0 0.4 13.5 29.6 30.9 31.0 27.6 4.6 0.0 0.0 137.6 =============================================================================================== TEHRAN 2006,MAY M.(S & A) STATION ZARGHAN (40847) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) FORM 21 LATITUDE 29 47 N LONGITUDE 52 43 E DATA PROCESSING CENTER ELEVATION 1596.0 M NO. OF DAYS WITH MAXIMUM TEMPERATURE EQUAL 00 AND BELOW YEAR JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL 1989 *** *** *** *** *** *** *** *** *** *** 0 0 *** 1990 0 0 0 0 *** *** *** 0 0 0 0 0 *** 1991 0 0 0 0 0 0 0 0 0 0 0 0 0 1992 0 0 0 0 0 0 0 0 0 0 0 0 0 1993 0 0 0 0 0 0 0 0 0 0 0 0 0 1994 0 0 0 0 0 0 0 0 0 0 0 0 0 1995 0 0 0 0 0 0 0 0 0 0 0 0 0 1996 4 0 0 0 0 0 0 0 0 0 0 0 4 1997 0 0 0 0 0 0 0 0 0 0 0 0 0 1998 0 0 0 0 0 0 0 0 0 0 0 0 0 1999 0 0 0 0 0 0 0 0 0 0 0 0 0 2000 1 0 0 0 0 0 0 0 0 0 0 0 1 2001 0 0 0 0 0 0 0 0 0 0 0 0 0 2002 0 0 0 0 0 0 0 0 0 0 0 0 0 2003 0 0 0 0 0 0 0 0 0 0 0 0 0 2004 0 0 0 0 0 0 0 0 0 0 0 0 0 2005 0 0 0 0 0 0 0 0 0 0 0 0 0 MEAN 0.3 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.3 =============================================================================================== TEHRAN 2006,MAY M.(S & A) STATION ZARGHAN (40847) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) FORM 22 LATITUDE 29 47 N LONGITUDE 52 43 E DATA PROCESSING CENTER ELEVATION 1596.0 M NO. OF DAYS WITH MINIMUM TEMPERATURE EQUAL 21 AND ABOVE YEAR JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL 1989 *** *** *** *** *** *** *** *** *** *** 0 0 *** 1990 0 0 0 0 *** *** *** 1 0 0 0 0 *** 1991 0 0 0 0 0 0 1 4 0 0 0 0 5 1992 0 0 0 0 0 0 2 3 0 0 0 0 5 1993 0 0 0 0 0 0 1 4 0 0 0 0 5 1994 0 0 0 0 0 0 11 8 1 0 0 0 20 1995 0 0 0 0 0 0 4 1 0 0 0 0 5 1996 0 0 0 0 0 0 2 2 0 0 0 0 4 1997 0 0 0 0 0 0 10 0 0 0 0 0 10 1998 0 0 0 0 0 0 6 3 0 0 0 0 9 1999 0 0 0 0 0 0 2 5 1 0 0 0 8 2000 0 0 0 0 0 0 6 1 0 0 0 0 7 2001 0 0 0 0 0 0 12 2 0 0 0 0 14 2002 0 0 0 0 0 0 1 1 0 0 0 0 2 2003 0 0 0 0 0 0 12 4 0 0 0 0 16 2004 0 0 0 0 0 3 3 2 0 0 0 0 8 2005 0 0 0 0 0 0 5 1 0 0 0 0 6 MEAN 0.0 0.0 0.0 0.0 0.0 0.2 5.2 2.6 0.1 0.0 0.0 0.0 8.1 =============================================================================================== TEHRAN 2006,MAY M.(S & A) STATION ZARGHAN (40847) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) FORM 23 LATITUDE 29 47 N LONGITUDE 52 43 E DATA PROCESSING CENTER ELEVATION 1596.0 M NO. OF DAYS WITH MINIMUM TEMPERATURE EQUAL -4 AND BELOW YEAR JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL 1989 *** *** *** *** *** *** *** *** *** *** 0 2 *** 1990 13 4 1 0 *** *** *** 0 0 0 0 3 *** 1991 5 5 0 0 0 0 0 0 0 0 0 2 12 1992 13 12 3 0 0 0 0 0 0 0 1 3 32 1993 10 5 0 0 0 0 0 0 0 0 0 0 15 1994 8 5 0 0 0 0 0 0 0 0 0 6 19 1995 2 0 0 0 0 0 0 0 0 0 2 0 4 1996 9 0 0 0 0 0 0 0 0 0 0 2 11 1997 8 12 1 0 0 0 0 0 0 0 0 0 21 1998 10 4 0 0 0 0 0 0 0 0 0 1 15 1999 5 0 0 0 0 0 0 0 0 0 1 2 8 2000 8 3 2 0 0 0 0 0 0 0 0 1 14 2001 8 5 0 0 0 0 0 0 0 0 2 0 15 2002 5 7 0 0 0 0 0 0 0 0 0 7 19 2003 4 0 2 0 0 0 0 0 0 0 1 0 7 2004 1 0 0 0 0 0 0 0 0 0 0 2 3 2005 8 2 0 0 0 0 0 0 0 0 0 0 10 MEAN 7.3 4.0 0.6 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.4 1.8 14.1 =============================================================================================== TEHRAN 2006,MAY M.(S & A) STATION ZARGHAN (40847) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) FORM 24 LATITUDE 29 47 N LONGITUDE 52 43 E DATA PROCESSING CENTER ELEVATION 1596.0 M NO. OF DAYS WITH MINIMUM TEMPERATURE EQUAL 00 AND BELOW YEAR JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL 1989 *** *** *** *** *** *** *** *** *** *** 8 21 *** 1990 23 14 13 2 *** *** *** 0 0 0 10 15 *** 1991 19 16 5 0 0 0 0 0 0 0 11 12 63 1992 24 20 16 1 0 0 0 0 0 0 10 13 84 1993 18 13 6 0 0 0 0 0 0 0 6 23 66 1994 19 26 3 0 0 0 0 0 0 0 1 21 70 1995 25 14 7 0 0 0 0 0 0 0 8 19 73 1996 24 13 2 0 0 0 0 0 0 1 5 26 71 1997 26 22 15 1 0 0 0 0 0 0 4 19 87 1998 22 17 4 0 0 0 0 0 0 0 3 16 62 1999 18 8 9 0 0 0 0 0 0 0 4 23 62 2000 23 21 14 0 0 0 0 0 0 0 5 14 77 2001 25 20 2 0 0 0 0 0 0 0 12 3 62 2002 20 16 0 0 0 0 0 0 0 0 11 16 63 2003 23 10 4 0 0 0 0 0 0 0 10 13 60 2004 13 12 4 0 0 0 0 0 0 0 4 20 53 2005 22 14 5 0 0 0 0 0 0 0 3 12 56 MEAN 21.5 16.0 6.8 0.3 0.0 0.0 0.0 0.0 0.0 0.1 6.8 16.8 68.3 =============================================================================================== TEHRAN 2006,MAY M.(S & A) STATION ZARGHAN (40847) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) FORM 25 LATITUDE 29 47 N LONGITUDE 52 43 E DATA PROCESSING CENTER ELEVATION 1596.0 M MONTHLY TOTAL OF PRECIPITATION IN MM. YEAR JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL 1989 ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** 37.0 73.2 ****** 1990 95.0 117.7 13.2 15.0 ***** ***** ***** 0.0 0.0 0.0 12.0 22.7 ****** 1991 177.3 43.2 55.5 7.7 0.0 0.3 0.0 0.0 3.0 5.0 0.0 81.9 373.9 1992 78.6 38.7 28.9 17.3 24.2 0.0 0.0 0.0 0.0 0.0 1.0 160.3 349.0 1993 105.3 115.9 97.4 14.3 0.9 0.0 0.0 2.0 0.0 3.2 7.2 0.0 346.2 1994 33.6 2.2 110.8 12.2 37.0 0.0 0.0 0.0 0.0 0.8 106.6 99.9 403.1 1995 14.9 151.6 38.4 75.8 4.2 2.1 0.0 0.0 0.0 28.1 0.0 143.8 458.9 1996 134.0 71.2 129.1 48.7 0.0 1.2 0.0 1.0 0.0 3.0 3.2 6.0 397.4 1997 46.2 5.3 94.2 43.9 3.9 1.0 0.8 0.0 0.0 0.4 30.3 81.3 307.3 1998 87.8 137.9 70.8 39.3 10.2 0.7 1.0 0.0 2.0 0.2 0.0 0.0 349.9 1999 79.6 201.7 81.8 3.6 0.0 0.0 0.0 0.3 0.0 0.0 0.5 17.8 385.3 2000 151.3 7.7 3.3 0.0 0.0 0.0 0.0 0.0 0.0 12.2 57.5 95.1 327.1 2001 17.5 41.6 8.2 0.0 2.6 0.0 0.0 0.0 0.0 0.0 5.5 129.2 204.6 2002 157.4 64.0 25.3 59.0 0.5 1.0 0.0 0.0 0.0 0.0 3.7 25.2 336.1 2003 80.6 70.2 96.5 14.7 0.1 0.0 0.0 0.0 0.0 0.0 0.1 50.5 312.7 2004 234.1 13.5 7.2 39.3 5.4 0.1 5.1 0.0 0.0 0.0 26.6 311.3 642.6 2005 91.6 28.0 35.0 2.1 3.2 0.0 0.4 0.0 0.0 0.0 80.6 42.7 283.6 MEAN 99.0 69.4 56.0 24.6 6.1 0.4 0.5 0.2 0.3 3.3 21.9 78.9 360.6 =============================================================================================== TEHRAN 2006,MAY M.(S & A) STATION ZARGHAN (40847) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) FORM 26 LATITUDE 29 47 N LONGITUDE 52 43 E DATA PROCESSING CENTER ELEVATION 1596.0 M GREATEST DAILY OF PRECIPITATION IN MM. YEAR JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL 1989 ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** 11.6 24.0 ****** DAY ** ** ** ** ** ** ** ** ** ** 15 5 1990 35.0 49.0 8.4 9.0 ***** ***** ***** 0.0 0.0 0.0 9.0 13.0 ****** DAY 10 4 18 3 ** ** ** ** ** ** 28 22 1991 45.0 14.0 14.0 6.0 0.0 0.3 0.0 0.0 3.0 3.0 0.0 33.0 45.0 DAY 14 21 7 5 ** 24 ** ** 30 2 ** 7 1992 20.0 28.0 13.0 8.0 7.0 0.0 0.0 0.0 0.0 0.0 1.0 39.0 39.0 DAY 21 25 31 26 2 ** ** ** ** ** 26 9 1993 30.0 21.0 29.0 6.0 0.4 0.0 0.0 2.0 0.0 3.2 5.0 0.0 30.0 DAY 9 23 6 25 2 ** ** 26 ** 29 13 ** 1994 29.0 1.0 42.0 9.0 27.0 0.0 0.0 0.0 0.0 0.8 44.0 26.0 44.0 DAY 24 25 12 2 6 ** ** ** ** 18 17 19 1995 4.1 51.0 12.2 32.0 4.0 2.1 0.0 0.0 0.0 19.0 0.0 54.0 54.0 DAY 22 6 14 24 30 3 ** ** ** 22 ** 6 1996 57.0 22.0 23.0 32.0 0.0 1.0 0.0 1.0 0.0 2.0 2.0 3.0 57.0 DAY 12 5 24 14 ** 15 ** 27 ** 17 24 15 1997 23.0 3.8 42.0 11.0 2.0 1.0 0.8 0.0 0.0 0.3 16.0 35.0 42.0 DAY 17 22 25 6 6 23 25 ** ** 21 27 1 1998 37.0 45.0 19.0 16.0 9.0 0.7 1.0 0.0 2.0 0.2 0.0 0.0 45.0 DAY 6 12 18 1 16 19 26 ** 15 12 ** ** 1999 38.0 65.0 45.0 3.0 0.0 0.0 0.0 0.3 0.0 0.0 0.4 17.0 65.0 DAY 18 6 2 7 ** ** ** 17 ** ** 11 12 2000 49.0 7.0 2.0 0.0 0.0 0.0 0.0 0.0 0.0 9.0 22.0 32.0 49.0 DAY 29 14 25 ** ** ** ** ** ** 4 18 11 2001 16.0 36.0 4.0 0.0 2.0 0.0 0.0 0.0 0.0 0.0 3.3 48.0 48.0 DAY 9 11 26 ** 3 ** ** ** ** ** 13 13 2002 69.0 20.0 8.0 37.0 0.5 1.0 0.0 0.0 0.0 0.0 2.0 7.1 69.0 DAY 11 15 19 3 3 27 ** ** ** ** 14 10 2003 18.0 42.0 36.0 11.0 0.1 0.0 0.0 0.0 0.0 0.0 0.1 44.0 44.0 DAY 23 5 26 14 8 ** ** ** ** ** 30 6 2004 63.0 5.0 3.5 30.0 5.0 0.1 4.0 0.0 0.0 0.0 13.0 68.0 68.0 DAY 9 2 19 5 4 23 13 ** ** ** 23 16 2005 35.0 8.9 18.0 2.0 3.0 0.0 0.3 0.0 0.0 0.0 34.0 25.0 35.0 DAY 23 26 14 30 1 ** 21 ** ** ** 14 26 1989-2005 69.0 65.0 45.0 37.0 27.0 2.1 4.0 2.0 3.0 19.0 44.0 68.0 69.0 YEAR-DAY 2-11 99- 6 99- 2 2- 3 94- 6 95- 3 4-13 93-26 91-30 95-22 94-17 4-16 2 =============================================================================================== TEHRAN 2006,MAY M.(S & A) STATION ZARGHAN (40847) I.R OF IRA