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. 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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