STATION LAR (40873) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 27 41 N LONGITUDE 54 17 E DATA PROCESSING CENTER ELEVATION 792.0 M MEANS AND EXTREMES FOR THE YEAR 1989 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AIR TEMPERATURE (C) ***** ***** ***** ***** ***** ***** ***** 35.3 31.9 27.0 20.7 13.4 ***** MINIMUN AIR TEMPERATURE (C) ***** ***** ***** ***** ***** ***** ***** 25.2 21.1 14.4 10.9 6.0 ***** DAYS WITH MINIMUM TEMP. >=21 **** **** **** **** **** **** **** 25 18 0 0 0 **** DAYS WITH MINIMUM TEMP. <=-4 **** **** **** **** **** **** **** 0 0 0 0 0 **** DAYS WITH FREEZING MIN.<= 0 **** **** **** **** **** **** **** 0 0 0 0 0 **** TEMPERATURE RECORDS LOWEST(C) ***** ***** ***** ***** ***** ***** ***** 21.6 16.6 8.8 5.5 1.8 ***** DAY ** ** ** ** ** ** ** 7 30 31 26 26 MAXIMUM AIR TEMPERATURE (C) ***** ***** ***** ***** ***** ***** ***** 41.5 38.2 34.0 27.1 18.8 ***** DAYS WITH MAXIMUM TEMP. >=30 **** **** **** **** **** **** **** 24 30 31 4 0 **** DAYS WITH MAXIMUM TEMP. <= 0 **** **** **** **** **** **** **** 0 0 0 0 0 **** TEMPERATURE RECORDS HIGHEST(C)***** ***** ***** ***** ***** ***** ***** 43.4 41.5 38.5 32.5 26.0 ***** DAY ** ** ** ** ** ** ** 28 7 10 1 1 DIF. BETWEEN (MAX.-MIN.) (C) ***** ***** ***** ***** ***** ***** ***** 16.3 17.1 19.6 16.2 12.8 ***** MEAN DAILY TEMP. (MDT) (C) ***** ***** ***** ***** ***** ***** ***** 33.3 29.6 24.2 19.0 12.4 ***** COOLING DEG. DAYS(BASE 21 0C)****** ****** ****** ****** ****** ****** ****** 297.1 258.6 101.5 4.7 0.0 ****** HEATING DEG. DAYS(BASE 18 0C)****** ****** ****** ****** ****** ****** ****** 0.0 0.0 0.0 14.9 173.6 ****** DEWPOINT (MEAN C) ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** MIXING RATIO (G/KG) ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** VAPOUR PRESSURE (HPA) ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** SATURATION DEF. (HPA) ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** RELATIVE HUMIDITY (MEAN %) *** *** *** *** *** *** *** *** *** *** *** *** *** RELATIVE HUMIDITY (MAX. %) *** *** *** *** *** *** *** *** *** *** *** *** *** RELATIVE HUMIDITY (MIN. %) *** *** *** *** *** *** *** *** *** *** *** *** *** RELATIVE HUMIDITY (MEAN% 03UTC) *** *** *** *** *** *** *** *** *** *** *** *** *** RELATIVE HUMIDITY (MEAN% 09UTC) *** *** *** *** *** *** *** *** *** *** *** *** *** RELATIVE HUMIDITY (MEAN% 15UTC) *** *** *** *** *** *** *** *** *** *** *** *** *** RH=0 => RELATIVE HUMIDITY < 0.5% AMOUNT OF PRECIPITATION MM. ****** ****** ****** ****** ****** ****** ****** 0.8 1.0 0.0 7.0 79.0 ****** DAYS WITH PRECIPITATION >=10 **** **** **** **** **** **** **** 0 0 0 0 4 **** DAYS WITH PRECIPITATION >= 5 **** **** **** **** **** **** **** 0 0 0 0 4 **** DAYS WITH PRECIPITATION >= 1 **** **** **** **** **** **** **** 0 1 0 2 6 **** DAYS WITH PRECIPITATION **** **** **** **** **** **** **** 3 1 0 2 6 **** GREATEST DAILY PRECIPITATION ****** ****** ****** ****** ****** ****** ****** 0.6 1.0 0.0 4.0 29.0 ****** DAY ** ** ** ** ** ** ** 8 4 ** 9 5 DAY WITH THUNDER STORM **** **** **** **** **** **** **** 4 1 0 0 2 **** DAYS WITH SNOW OR SLEET **** **** **** **** **** **** **** 0 0 0 0 0 **** DAYS WITH DUST **** **** **** **** **** **** **** 6 0 0 0 0 **** WIND DIRECTION (PREVAILING) *** *** *** *** *** *** *** 90 270 45 270 90 *** PREVAILING WIND SPEED(KNOTS) **** **** **** **** **** **** **** 10.0 5.7 7.2 7.8 9.1 **** PREVAILING WIND PERCENT ***** ***** ***** ***** ***** ***** ***** 17.6 15.3 6.5 14.0 5.8 ***** CALMS PERCENT OF WIND ***** ***** ***** ***** ***** ***** ***** 48.0 53.3 67.7 68.7 87.1 ***** NO. OF WIND OBSERVATION **** **** **** **** **** **** **** 125 150 155 150 155 735 VECTOR WIND DIRECTION (MEAN) *** *** *** *** *** *** *** 141 240 105 267 92 *** VECTOR WIND MAGNITUDE(KNOTS) **** **** **** **** **** **** **** 1.2 1.5 0.4 1.5 0.4 **** WIND STEADINESES (MEAN %) ***** ***** ***** ***** ***** ***** ***** 24.5 50.0 19.0 71.4 44.4 ***** WIND SPEED (MEAN KNOTS) **** **** **** **** **** **** **** 4.9 3.0 2.1 2.1 0.9 **** FASTEST WIND DIRECTION *** *** *** *** *** *** *** 270 240 40 260 90 *** FASTEST WIND SPEED (KNOTS) *** *** *** *** *** *** *** 47 14 14 19 14 *** DAY ** ** ** ** ** ** ** 17 9 19 18 15 DAYS WITH SKY CLEAR (0-2)/8 **** **** **** **** **** **** **** 17 30 31 22 20 **** DAYS WITH P.CLOUDY (3-6)/8 **** **** **** **** **** **** **** 8 0 0 7 7 **** DAYS WITH CLOUDY (7-8)/8 **** **** **** **** **** **** **** 0 0 0 1 4 **** DAYS WITH VISIBILITY =< 2 KM **** **** **** **** **** **** **** 1 0 0 0 3 **** DURATION OF SUNSHINE HOURS ****** ****** ****** ****** ****** ****** ****** 238.2 299.2 319.1 248.4 225.2 ****** ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION LAR (40873) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 27 41 N LONGITUDE 54 17 E DATA PROCESSING CENTER ELEVATION 792.0 M MEANS AND EXTREMES FOR THE YEAR 1989 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL MEAN QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY-HOUR **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** MIN. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY-HOUR **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** MEAN QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY-HOUR **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** MIN. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY-HOUR **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY-HOUR **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY-HOUR **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** PRESSURE AT HOUR 0000 UTC. MEAN QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** PRESSURE AT HOUR 0300 UTC. MEAN QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION LAR (40873) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 27 41 N LONGITUDE 54 17 E DATA PROCESSING CENTER ELEVATION 792.0 M MEANS AND EXTREMES FOR THE YEAR 1989 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 0600 UTC. MEAN QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** PRESSURE AT HOUR 0900 UTC. MEAN QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** PRESSURE AT HOUR 1200 UTC. MEAN QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION LAR (40873) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 27 41 N LONGITUDE 54 17 E DATA PROCESSING CENTER ELEVATION 792.0 M MEANS AND EXTREMES FOR THE YEAR 1989 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 1500 UTC. MEAN QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** PRESSURE AT HOUR 1800 UTC. MEAN QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** PRESSURE AT HOUR 2100 UTC. MEAN QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION LAR (40873) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 27 41 N LONGITUDE 54 17 E DATA PROCESSING CENTER ELEVATION 792.0 M MEANS AND EXTREMES FOR THE YEAR 1990 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AIR TEMPERATURE (C) 11.7 14.1 20.1 25.8 33.5 36.2 ***** 36.4 33.4 27.1 20.7 15.8 ***** MINIMUN AIR TEMPERATURE (C) 5.3 5.9 8.8 15.0 20.3 22.4 ***** 26.1 21.6 15.4 9.1 4.8 ***** DAYS WITH MINIMUM TEMP. >=21 0 0 0 1 13 21 **** 31 20 0 0 0 **** DAYS WITH MINIMUM TEMP. <=-4 0 0 0 0 0 0 **** 0 0 0 0 0 **** DAYS WITH FREEZING MIN.<= 0 0 0 0 0 0 0 **** 0 0 0 0 3 **** TEMPERATURE RECORDS LOWEST(C) 0.2 0.5 2.0 7.6 15.0 18.0 ***** 21.0 17.0 12.2 5.0 -3.0 ***** DAY 31 1 2 10 14 2 ** 29 29 31 21 30 MAXIMUM AIR TEMPERATURE (C) 17.0 19.7 26.9 31.9 39.5 42.6 ***** 42.5 40.0 33.5 27.9 23.3 ***** DAYS WITH MAXIMUM TEMP. >=30 0 0 6 20 31 30 **** 31 30 31 8 0 **** DAYS WITH MAXIMUM TEMP. <= 0 0 0 0 0 0 0 **** 0 0 0 0 0 **** TEMPERATURE RECORDS HIGHEST(C) 19.8 24.0 33.0 37.0 43.2 45.4 ***** 45.4 43.0 38.0 31.4 26.8 ***** DAY 24 5 13 14 23 20 ** 13 3 6 6 7 DIF. BETWEEN (MAX.-MIN.) (C) 11.7 13.8 18.1 16.9 19.2 20.2 ***** 16.4 18.4 18.1 18.8 18.5 ***** MEAN DAILY TEMP. (MDT) (C) 11.2 12.8 17.8 23.5 29.9 32.5 ***** 34.3 30.8 24.5 18.5 14.1 ***** COOLING DEG. DAYS(BASE 21 0C) 0.0 0.0 3.0 94.8 277.2 345.2 ****** 410.8 294.7 107.3 1.4 0.0 ****** HEATING DEG. DAYS(BASE 18 0C) 212.3 132.1 36.5 3.0 0.0 0.0 ****** 0.0 0.0 0.0 18.8 122.4 ****** DEWPOINT (MEAN C) ***** ***** ***** 5.5 8.8 3.9 ***** 15.6 15.0 5.8 1.9 1.8 ***** MIXING RATIO (G/KG) ****** ****** ****** 6.70 9.67 6.01 ****** 12.80 12.12 6.64 4.85 5.19 ****** VAPOUR PRESSURE (HPA) ****** ****** ****** 9.80 13.90 8.73 ****** 18.39 17.51 9.75 7.17 7.65 ****** SATURATION DEF. (HPA) ****** ****** ****** 25.69 40.49 54.53 ****** 44.64 36.34 28.12 18.88 11.61 ****** RELATIVE HUMIDITY (MEAN %) *** *** *** 32 27 16 *** 32 36 29 32 43 *** RELATIVE HUMIDITY (MAX. %) *** *** 58 51 40 27 *** 46 58 52 54 64 *** RELATIVE HUMIDITY (MIN. %) *** *** 19 22 20 10 *** 21 23 17 19 29 *** RELATIVE HUMIDITY (MEAN% 03UTC) *** *** 59 50 40 27 *** 45 58 52 54 64 *** RELATIVE HUMIDITY (MEAN% 09UTC) *** *** 26 24 22 12 *** 27 27 20 24 35 *** RELATIVE HUMIDITY (MEAN% 15UTC) *** *** 24 27 24 12 *** 25 30 22 25 36 *** RH=0 => RELATIVE HUMIDITY < 0.5% AMOUNT OF PRECIPITATION MM. 29.8 36.0 4.6 3.4 0.0 0.0 ****** 0.2 4.0 0.0 0.0 0.0 ****** DAYS WITH PRECIPITATION >=10 1 1 0 0 0 0 **** 0 0 0 0 0 **** DAYS WITH PRECIPITATION >= 5 3 2 0 0 0 0 **** 0 0 0 0 0 **** DAYS WITH PRECIPITATION >= 1 7 3 1 1 0 0 **** 0 1 0 0 0 **** DAYS WITH PRECIPITATION 9 5 1 4 0 0 **** 1 2 0 0 0 **** GREATEST DAILY PRECIPITATION 10.3 27.0 4.6 2.0 0.0 0.0 ****** 0.2 4.0 0.0 0.0 0.0 ****** DAY 4 10 25 3 ** ** ** 4 15 ** ** ** DAY WITH THUNDER STORM 0 2 0 0 0 0 **** 1 1 0 0 0 **** DAYS WITH SNOW OR SLEET 0 0 0 0 0 0 **** 0 0 0 0 0 **** DAYS WITH DUST 0 1 2 8 0 2 **** 3 1 3 0 1 **** WIND DIRECTION (PREVAILING) 270 270 270 270 270 270 *** 225 225 225 225 315 *** PREVAILING WIND SPEED(KNOTS) 8.0 11.1 8.7 11.5 9.1 8.4 **** 7.4 7.2 6.4 4.0 7.3 **** PREVAILING WIND PERCENT 6.5 9.1 12.3 29.3 16.1 14.7 ***** 12.3 12.7 11.6 2.0 6.5 ***** CALMS PERCENT OF WIND 84.5 75.0 67.1 51.3 63.2 55.3 ***** 54.2 52.7 58.7 95.3 82.6 ***** NO. OF WIND OBSERVATION 155 132 155 150 155 150 **** 155 150 155 148 155 1660 VECTOR WIND DIRECTION (MEAN) 302 265 251 268 270 253 *** 134 222 206 117 287 *** VECTOR WIND MAGNITUDE(KNOTS) 0.5 1.2 2.3 4.7 1.8 1.5 **** 0.7 1.5 0.9 R< 0.1 0.8 **** WIND STEADINESES (MEAN %) 41.7 48.0 74.2 87.0 50.0 39.5 ***** 19.4 42.9 32.1 11.2 66.7 ***** WIND SPEED (MEAN KNOTS) 1.2 2.5 3.1 5.4 3.6 3.8 **** 3.6 3.5 2.8 0.3 1.2 **** FASTEST WIND DIRECTION 80 240 300 250 160 10 *** 60 310 210 90 300 *** FASTEST WIND SPEED (KNOTS) 16 19 19 25 19 17 *** 29 16 16 12 19 *** DAY 5 24 24 18 30 4 ** 3 4 9 23 25 DAYS WITH SKY CLEAR (0-2)/8 15 20 22 17 27 30 **** 29 27 31 27 25 **** DAYS WITH P.CLOUDY (3-6)/8 12 6 4 10 4 0 **** 2 3 0 3 6 **** DAYS WITH CLOUDY (7-8)/8 4 2 5 3 0 0 **** 0 0 0 0 0 **** DAYS WITH VISIBILITY =< 2 KM 0 1 0 1 0 0 **** 0 0 0 0 0 **** DURATION OF SUNSHINE HOURS 218.6 216.2 288.6 268.0 358.4 ****** ****** ****** ****** ****** ****** ****** ****** ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION LAR (40873) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 27 41 N LONGITUDE 54 17 E DATA PROCESSING CENTER ELEVATION 792.0 M MEANS AND EXTREMES FOR THE YEAR 1990 JAN. 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QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** PRESSURE AT HOUR 0300 UTC. MEAN QFE PRESSURE IN HPA ****** ****** 923.1 921.7 917.7 914.7 ****** 914.8 918.0 924.5 927.0 927.0 ****** MAX. QFE PRESSURE IN HPA ****** ****** 926.6 926.0 920.1 918.4 ****** 917.4 921.6 928.0 931.4 932.0 ****** DAY ** ** 23 3 18 2 ** 16 22 20 24 5 MIN. QFE PRESSURE IN HPA ****** ****** 920.5 917.0 914.3 911.0 ****** 912.0 914.1 919.3 920.0 923.2 ****** DAY ** ** 20 16 30 26 ** 1 4 1 1 10 MEAN QNH PRESSURE IN HPA ****** ****** 1014.5 1013.0 1008.7 1005.5 ****** 1005.5 1009.1 1016.1 1018.7 1018.7 ****** MAX. QNH PRESSURE IN HPA ****** ****** 1018.3 1017.7 1011.3 1009.5 ****** 1008.4 1012.9 1019.8 1023.5 1024.1 ****** DAY ** ** 23 3 18 2 ** 16 22 20 24 5 MIN. QNH PRESSURE IN HPA ****** ****** 1011.7 1007.9 1005.0 1001.5 ****** 1002.5 1004.8 1010.4 1011.2 1014.6 ****** DAY ** ** 20 16 30 26 ** 1 4 1 1 10 MEAN QFF PRESSURE IN HPA ****** ****** 1012.2 1009.0 1002.3 998.5 ****** 997.9 1002.3 1011.7 1016.6 1018.1 ****** MAX. QFF PRESSURE IN HPA ****** ****** 1016.7 1014.6 1005.5 1003.6 ****** 1001.0 1006.8 1016.5 1022.5 1023.6 ****** DAY ** ** 23 2 15 2 ** 16 26 20 24 6 MIN. QFF PRESSURE IN HPA ****** ****** 1008.6 1003.1 998.5 993.8 ****** 994.7 997.9 1005.2 1008.2 1013.8 ****** DAY ** ** 20 16 30 30 ** 13 4 1 1 15 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION LAR (40873) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 27 41 N LONGITUDE 54 17 E DATA PROCESSING CENTER ELEVATION 792.0 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. 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QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** PRESSURE AT HOUR 0900 UTC. MEAN QFE PRESSURE IN HPA ****** ****** 923.2 921.6 917.2 914.3 ****** 914.2 917.5 924.0 926.5 926.9 ****** MAX. QFE PRESSURE IN HPA ****** ****** 927.3 925.3 919.8 918.0 ****** 916.6 920.9 928.1 930.6 931.9 ****** DAY ** ** 23 3 16 1 ** 31 26 19 23 5 MIN. QFE PRESSURE IN HPA ****** ****** 920.8 917.0 913.9 910.2 ****** 911.7 913.9 918.5 919.2 923.5 ****** DAY ** ** 20 16 30 30 ** 1 4 1 1 10 MEAN QNH PRESSURE IN HPA ****** ****** 1014.6 1012.9 1008.2 1005.0 ****** 1004.9 1008.4 1015.4 1018.2 1018.6 ****** MAX. QNH PRESSURE IN HPA ****** ****** 1019.1 1016.9 1011.0 1009.0 ****** 1007.5 1012.1 1019.9 1022.6 1024.0 ****** DAY ** ** 23 3 16 1 ** 31 26 19 23 5 MIN. QNH PRESSURE IN HPA ****** ****** 1012.0 1007.9 1004.6 1000.6 ****** 1002.2 1004.6 1009.6 1010.3 1015.0 ****** DAY ** ** 20 16 30 30 ** 1 4 1 1 10 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** PRESSURE AT HOUR 1200 UTC. MEAN QFE PRESSURE IN HPA ****** ****** 921.4 919.9 915.5 912.6 ****** 912.7 915.8 922.2 924.9 925.1 ****** MAX. QFE PRESSURE IN HPA ****** ****** 925.0 923.6 917.8 916.4 ****** 915.2 920.2 926.3 928.9 929.7 ****** DAY ** ** 25 3 16 2 ** 16 26 19 23 5 MIN. QFE PRESSURE IN HPA ****** ****** 918.9 916.4 912.8 908.3 ****** 909.8 912.6 916.9 917.6 921.8 ****** DAY ** ** 27 30 30 30 ** 1 5 1 1 9 MEAN QNH PRESSURE IN HPA ****** ****** 1012.7 1011.0 1006.3 1003.2 ****** 1003.3 1006.6 1013.6 1016.4 1016.7 ****** MAX. QNH PRESSURE IN HPA ****** ****** 1016.6 1015.1 1008.8 1007.3 ****** 1006.0 1011.4 1018.0 1020.8 1021.6 ****** DAY ** ** 25 3 16 2 ** 16 26 19 23 5 MIN. QNH PRESSURE IN HPA ****** ****** 1010.0 1007.3 1003.4 998.5 ****** 1000.2 1003.2 1007.8 1008.6 1013.1 ****** DAY ** ** 27 30 30 30 ** 1 5 1 1 9 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION LAR (40873) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 27 41 N LONGITUDE 54 17 E DATA PROCESSING CENTER ELEVATION 792.0 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 ****** ****** 921.6 920.0 915.3 912.1 ****** 912.7 915.9 922.5 925.4 925.6 ****** MAX. QFE PRESSURE IN HPA ****** ****** 925.0 923.7 917.4 915.6 ****** 915.3 920.2 926.3 929.5 930.4 ****** DAY ** ** 24 3 16 1 ** 31 26 19 22 5 MIN. 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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 LAR (40873) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 27 41 N LONGITUDE 54 17 E DATA PROCESSING CENTER ELEVATION 792.0 M MEANS AND EXTREMES FOR THE YEAR 1991 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AIR TEMPERATURE (C) 13.3 13.7 17.8 26.3 30.7 35.6 36.6 35.9 32.0 25.8 19.2 14.1 25.1 MINIMUN AIR TEMPERATURE (C) 5.2 5.8 10.0 14.9 18.5 21.2 24.1 25.3 21.5 15.2 8.8 8.4 14.9 DAYS WITH MINIMUM TEMP. >=21 0 0 0 0 8 16 27 31 21 0 0 0 103 DAYS WITH MINIMUM TEMP. <=-4 1 0 0 0 0 0 0 0 0 0 0 0 1 DAYS WITH FREEZING MIN.<= 0 4 4 0 0 0 0 0 0 0 0 0 0 8 TEMPERATURE RECORDS LOWEST(C) -4.8 -1.0 5.0 9.6 10.2 18.4 19.0 21.0 16.4 10.4 5.8 1.4 -4.8 DAY 8 16 10 15 6 1 1 28 30 25 30 31 MAXIMUM AIR TEMPERATURE (C) 18.8 19.3 23.3 32.6 37.3 43.9 44.7 43.2 39.0 33.7 26.6 19.4 31.8 DAYS WITH MAXIMUM TEMP. >=30 0 0 0 22 31 30 31 31 30 29 4 0 208 DAYS WITH MAXIMUM TEMP. <= 0 0 0 0 0 0 0 0 0 0 0 0 0 0 TEMPERATURE RECORDS HIGHEST(C) 25.0 26.0 29.6 37.4 43.0 46.6 47.0 47.8 43.6 36.8 33.0 24.6 47.8 DAY 21 3 22 29 31 3 2 9 10 30 1 1 DIF. BETWEEN (MAX.-MIN.) (C) 13.6 13.5 13.3 17.7 18.8 22.7 20.6 17.9 17.5 18.5 17.8 11.0 16.9 MEAN DAILY TEMP. (MDT) (C) 12.0 12.6 16.7 23.8 27.9 32.6 34.4 34.3 30.3 24.5 17.7 13.9 23.4 COOLING DEG. DAYS(BASE 21 0C) 0.0 0.0 2.8 89.2 213.5 347.4 416.0 410.8 277.8 107.7 1.7 0.0 1867.1 HEATING DEG. DAYS(BASE 18 0C) 185.6 152.2 63.7 0.0 0.0 0.0 0.0 0.0 0.0 0.0 31.9 126.0 559.3 DEWPOINT (MEAN C) 3.0 4.9 7.8 2.9 7.0 3.2 11.4 10.9 10.1 5.9 5.6 9.4 6.8 MIXING RATIO (G/KG) 5.67 6.19 7.42 5.36 7.51 5.59 9.70 9.64 9.18 6.60 6.42 8.26 7.29 VAPOUR PRESSURE (HPA) 8.35 9.11 10.87 7.88 10.91 8.13 13.97 13.90 13.33 9.69 9.47 12.14 10.65 SATURATION DEF. (HPA) 7.70 7.31 10.53 28.52 35.52 52.94 50.49 47.89 36.62 25.44 14.27 4.44 26.81 RELATIVE HUMIDITY (MEAN %) 55 59 56 26 25 16 25 26 31 31 46 76 39 RELATIVE HUMIDITY (MAX. %) 77 85 83 52 40 29 42 47 57 51 70 94 61 RELATIVE HUMIDITY (MIN. %) 38 41 37 14 17 9 15 13 16 18 30 58 26 RELATIVE HUMIDITY (MEAN% 03UTC) 75 84 83 52 38 29 42 47 55 51 69 93 60 RELATIVE HUMIDITY (MEAN% 09UTC) 45 50 45 17 22 11 19 19 22 24 37 66 31 RELATIVE HUMIDITY (MEAN% 15UTC) 49 51 47 18 21 10 18 18 24 24 36 76 33 RH=0 => RELATIVE HUMIDITY < 0.5% AMOUNT OF PRECIPITATION MM. 45.4 60.9 48.2 0.0 0.0 0.0 0.0 3.3 11.0 52.0 13.0 110.0 343.8 DAYS WITH PRECIPITATION >=10 2 1 2 0 0 0 0 0 0 1 1 5 12 DAYS WITH PRECIPITATION >= 5 3 2 3 0 0 0 0 0 0 1 1 7 17 DAYS WITH PRECIPITATION >= 1 4 4 5 0 0 0 0 2 4 1 1 9 30 DAYS WITH PRECIPITATION 7 9 7 0 0 0 0 3 4 1 1 9 41 GREATEST DAILY PRECIPITATION 22.0 45.0 24.0 0.0 0.0 0.0 0.0 2.0 4.0 52.0 13.0 31.0 52.0 DAY 15 28 7 ** ** ** ** 30 30 1 24 6 DAY WITH THUNDER STORM 0 1 1 0 0 0 0 1 2 0 1 3 9 DAYS WITH SNOW OR SLEET 0 0 0 0 0 0 0 0 0 0 0 0 0 DAYS WITH DUST 0 1 0 3 6 4 17 18 18 12 8 0 87 WIND DIRECTION (PREVAILING) 90 270 270 270 270 225 45 90 90 270 270 90 270 PREVAILING WIND SPEED(KNOTS) 9.5 7.8 11.7 12.3 11.0 6.1 6.9 8.5 9.7 8.0 9.1 12.9 10.0 PREVAILING WIND PERCENT 12.4 11.4 19.4 17.3 21.9 12.7 11.0 10.3 11.3 4.5 8.7 12.9 10.4 CALMS PERCENT OF WIND 71.2 59.3 52.3 61.3 52.9 44.7 43.2 52.9 49.3 81.3 80.0 74.2 60.2 NO. OF WIND OBSERVATION 153 140 155 150 155 150 155 155 150 155 150 155 1823 VECTOR WIND DIRECTION (MEAN) 32 242 270 267 257 174 176 158 273 332 333 79 258 VECTOR WIND MAGNITUDE(KNOTS) 0.8 0.4 1.6 2.6 3.8 0.4 0.2 0.8 0.3 0.2 0.2 1.5 0.6 WIND STEADINESES (MEAN %) 28.6 11.8 34.8 70.3 86.4 10.0 4.3 21.6 7.7 18.2 11.1 57.7 17.6 WIND SPEED (MEAN KNOTS) 2.8 3.4 4.6 3.7 4.4 4.0 4.6 3.7 3.9 1.1 1.8 2.6 3.4 FASTEST WIND DIRECTION 290 80 270 280 240 60 290 150 70 260 270 90 270 FASTEST WIND SPEED (KNOTS) 23 23 35 27 17 19 19 23 19 14 16 23 35 DAY 22 21 10 6 22 18 3 5 11 24 16 18 DAYS WITH SKY CLEAR (0-2)/8 16 10 14 22 24 28 30 30 29 28 25 15 271 DAYS WITH P.CLOUDY (3-6)/8 12 12 11 5 7 2 1 1 1 3 5 7 67 DAYS WITH CLOUDY (7-8)/8 3 6 6 3 0 0 0 0 0 0 0 9 27 DAYS WITH VISIBILITY =< 2 KM 0 0 0 0 1 0 0 1 1 0 1 17 21 DURATION OF SUNSHINE HOURS 189.6 173.4 228.3 280.8 326.8 341.1 338.1 ****** 266.8 237.3 270.8 184.8 ****** ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION LAR (40873) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 27 41 N LONGITUDE 54 17 E DATA PROCESSING CENTER ELEVATION 792.0 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 926.3 926.1 922.7 922.0 917.6 913.5 911.0 912.9 918.6 924.0 926.8 926.7 920.7 MAX. QFE PRESSURE IN HPA 932.5 935.4 928.6 927.2 922.1 919.0 916.6 917.7 924.8 929.3 932.5 932.9 935.4 DAY-HOUR 12- 6 16- 6 18- 6 3- 6 9- 6 1- 6 1- 6 30- 6 30- 6 17- 6 14- 6 7-15 MIN. QFE PRESSURE IN HPA 917.6 917.8 918.1 916.8 912.4 908.8 906.3 908.6 912.5 919.7 921.0 921.2 906.3 DAY-HOUR 25-12 8-12 16-12 27-12 28-12 11-15 14-15 3-12 3-12 8-15 8-12 19-12 MEAN QNH PRESSURE IN HPA 1018.0 1017.7 1014.1 1013.3 1008.6 1004.1 1001.5 1003.5 1009.7 1015.5 1018.5 1018.4 1011.9 MAX. QNH PRESSURE IN HPA 1024.7 1027.8 1020.5 1019.0 1013.4 1010.1 1007.5 1008.7 1016.4 1021.2 1024.7 1025.1 1027.8 DAY-HOUR 12- 6 16- 6 18- 6 3- 6 9- 6 1- 6 1- 6 30- 6 30- 6 17- 6 14- 6 7-15 MIN. QNH PRESSURE IN HPA 1008.6 1008.8 1009.1 1007.7 1003.0 999.1 996.4 998.9 1003.1 1010.9 1012.3 1012.5 996.4 DAY-HOUR 25-12 8-12 16-12 27-12 28-12 11-15 14-15 3-12 3-12 8-15 8-12 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 926.5 926.4 923.3 922.7 918.2 914.4 912.0 914.0 919.5 924.4 927.4 926.8 921.3 MAX. QFE PRESSURE IN HPA 930.6 934.2 928.0 926.4 921.2 918.4 916.3 916.9 924.0 928.0 931.0 931.3 934.2 DAY 12 16 18 4 9 1 1 31 29 17 14 8 MIN. QFE PRESSURE IN HPA 918.8 919.8 919.7 919.3 914.4 911.0 909.1 910.6 913.7 921.3 923.3 922.7 909.1 DAY 26 8 1 27 28 11 14 3 11 7 8 19 MEAN QNH PRESSURE IN HPA 1018.2 1018.1 1014.8 1014.1 1009.2 1005.1 1002.5 1004.7 1010.6 1015.9 1019.1 1018.5 1012.6 MAX. QNH PRESSURE IN HPA 1022.6 1026.5 1019.8 1018.1 1012.5 1009.5 1007.2 1007.8 1015.5 1019.8 1023.1 1023.4 1026.5 DAY 12 16 18 4 9 1 1 31 29 17 14 8 MIN. QNH PRESSURE IN HPA 1009.9 1011.0 1010.9 1010.4 1005.1 1001.5 999.4 1001.0 1004.4 1012.6 1014.7 1014.1 999.4 DAY 26 8 1 27 28 11 14 3 11 7 8 19 MEAN QFF PRESSURE IN HPA 1017.9 1017.6 1012.8 1010.0 1003.6 998.2 994.9 997.1 1004.3 1011.9 1017.3 1017.6 1008.6 MAX. QFF PRESSURE IN HPA 1023.6 1027.7 1018.5 1015.0 1007.7 1003.1 1000.7 1001.5 1010.8 1016.5 1021.3 1022.3 1027.7 DAY 8 16 18 4 8 1 1 30 29 17 27 8 MIN. QFF PRESSURE IN HPA 1007.7 1009.0 1008.6 1005.2 998.9 994.4 991.6 993.5 997.8 1008.0 1011.9 1013.9 991.6 DAY 26 8 26 27 29 12 14 1 11 7 6 22 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION LAR (40873) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 27 41 N LONGITUDE 54 17 E DATA PROCESSING CENTER ELEVATION 792.0 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 928.0 927.7 924.0 923.6 919.2 915.0 912.7 914.5 920.4 925.8 928.7 928.3 922.3 MAX. QFE PRESSURE IN HPA 932.5 935.4 928.6 927.2 922.1 919.0 916.6 917.7 924.8 929.3 932.5 932.4 935.4 DAY 12 16 18 3 9 1 1 30 30 17 14 7 MIN. QFE PRESSURE IN HPA 921.4 920.6 920.4 919.7 915.2 911.4 909.5 910.8 915.0 923.3 924.4 924.2 909.5 DAY 26 8 16 27 28 11 14 3 11 10 8 19 MEAN QNH PRESSURE IN HPA 1019.8 1019.5 1015.5 1015.1 1010.3 1005.7 1003.3 1005.3 1011.6 1017.4 1020.6 1020.1 1013.7 MAX. QNH PRESSURE IN HPA 1024.7 1027.8 1020.5 1019.0 1013.4 1010.1 1007.5 1008.7 1016.4 1021.2 1024.7 1024.6 1027.8 DAY 12 16 18 3 9 1 1 30 30 17 14 7 MIN. QNH PRESSURE IN HPA 1012.7 1011.8 1011.6 1010.9 1006.0 1001.9 999.8 1001.2 1005.8 1014.7 1015.9 1015.7 999.8 DAY 26 8 16 27 28 11 14 3 11 10 8 19 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 926.6 926.4 922.9 922.2 918.1 913.9 911.5 913.3 919.1 924.4 927.1 926.9 921.0 MAX. QFE PRESSURE IN HPA 931.0 934.0 927.8 926.2 920.9 918.1 915.5 917.1 923.9 927.8 930.1 932.1 934.0 DAY 12 15 18 4 8 1 1 30 29 19 14 7 MIN. QFE PRESSURE IN HPA 920.2 919.4 918.2 918.9 914.3 910.4 908.8 909.6 913.6 921.6 922.5 923.3 908.8 DAY 25 8 7 27 28 11 14 3 11 5 8 19 MEAN QNH PRESSURE IN HPA 1018.3 1018.0 1014.3 1013.6 1009.2 1004.6 1002.0 1004.0 1010.2 1015.9 1018.8 1018.6 1012.3 MAX. QNH PRESSURE IN HPA 1023.1 1026.3 1019.6 1017.9 1012.1 1009.1 1006.3 1008.0 1015.4 1019.6 1022.1 1024.2 1026.3 DAY 12 15 18 4 8 1 1 30 29 19 14 7 MIN. QNH PRESSURE IN HPA 1011.4 1010.5 1009.2 1010.0 1005.0 1000.8 999.1 999.9 1004.3 1012.9 1013.9 1014.7 999.1 DAY 25 8 7 27 28 11 14 3 11 5 8 19 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 925.1 924.6 921.6 920.7 916.5 912.3 909.7 911.4 917.2 922.8 925.4 925.5 919.4 MAX. QFE PRESSURE IN HPA 931.0 932.1 926.4 924.9 919.4 915.5 914.1 914.6 922.9 926.5 928.4 931.4 932.1 DAY 13 15 5 18 8 1 1 30 29 19 13 7 MIN. QFE PRESSURE IN HPA 917.6 917.8 918.1 916.8 912.4 909.0 906.8 908.6 912.5 920.0 921.0 921.2 906.8 DAY 25 8 16 27 28 11 14 3 3 6 8 19 MEAN QNH PRESSURE IN HPA 1016.7 1016.2 1012.9 1011.9 1007.4 1002.8 1000.0 1001.9 1008.1 1014.2 1017.0 1017.1 1010.5 MAX. QNH PRESSURE IN HPA 1023.1 1024.2 1018.1 1016.5 1010.5 1006.3 1004.8 1005.3 1014.3 1018.2 1020.2 1023.5 1024.2 DAY 13 15 5 18 8 1 1 30 29 19 13 7 MIN. QNH PRESSURE IN HPA 1008.6 1008.8 1009.1 1007.7 1003.0 999.3 996.9 998.9 1003.1 1011.2 1012.3 1012.5 996.9 DAY 25 8 16 27 28 11 14 3 3 6 8 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 LAR (40873) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 27 41 N LONGITUDE 54 17 E DATA PROCESSING CENTER ELEVATION 792.0 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 925.6 925.2 921.6 920.9 916.1 911.9 909.1 911.1 917.0 922.6 925.6 926.0 919.4 MAX. QFE PRESSURE IN HPA 931.3 932.2 926.4 924.9 919.4 915.5 912.7 914.5 922.2 925.8 928.9 932.9 932.9 DAY 13 15 5 18 8 1 1 30 30 16 13 7 MIN. QFE PRESSURE IN HPA 917.8 919.2 918.1 916.8 912.4 908.8 906.3 908.6 912.8 919.7 921.5 922.2 906.3 DAY 25 8 16 27 28 11 14 3 11 8 6 19 MEAN QNH PRESSURE IN HPA 1017.2 1016.8 1012.9 1012.1 1007.0 1002.5 999.4 1001.6 1007.9 1014.0 1017.2 1017.7 1010.5 MAX. QNH PRESSURE IN HPA 1023.4 1024.4 1018.1 1016.5 1010.5 1006.3 1003.3 1005.2 1013.6 1017.4 1020.8 1025.1 1025.1 DAY 13 15 5 18 8 1 1 30 30 16 13 7 MIN. QNH PRESSURE IN HPA 1008.8 1010.3 1009.1 1007.7 1003.0 999.1 996.4 998.9 1003.4 1010.9 1012.8 1013.6 996.4 DAY 25 8 16 27 28 11 14 3 11 8 6 19 MEAN QFF PRESSURE IN HPA 1016.8 1016.2 1010.8 1008.0 1001.3 995.5 991.8 994.1 1001.7 1009.9 1015.4 1016.7 1006.5 MAX. QFF PRESSURE IN HPA 1023.0 1025.2 1017.1 1013.1 1005.9 999.5 996.9 998.6 1010.3 1013.4 1019.6 1023.7 1025.2 DAY 12 15 5 3 8 1 1 30 30 16 27 7 MIN. QFF PRESSURE IN HPA 1006.6 1008.8 1006.6 1002.2 996.7 992.1 988.6 990.7 996.6 1006.0 1009.7 1012.8 988.6 DAY 25 8 24 27 28 11 14 3 3 8 6 22 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 LAR (40873) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 27 41 N LONGITUDE 54 17 E DATA PROCESSING CENTER ELEVATION 792.0 M MEANS AND EXTREMES FOR THE YEAR 1992 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AIR TEMPERATURE (C) 8.9 12.2 15.3 22.5 30.2 35.4 36.5 34.9 31.6 26.1 20.0 13.6 23.9 MINIMUN AIR TEMPERATURE (C) 3.6 5.0 7.0 11.5 18.7 21.9 24.5 24.8 19.4 14.0 8.7 7.1 13.8 DAYS WITH MINIMUM TEMP. >=21 0 0 0 0 7 22 30 29 6 0 0 0 94 DAYS WITH MINIMUM TEMP. <=-4 0 0 0 0 0 0 0 0 0 0 0 0 0 DAYS WITH FREEZING MIN.<= 0 8 4 0 0 0 0 0 0 0 0 0 1 13 TEMPERATURE RECORDS LOWEST(C) -1.0 -1.4 1.0 6.6 12.0 20.0 20.0 20.2 13.0 10.8 3.8 -1.0 -1.4 DAY 6 13 1 7 13 3 12 17 11 30 23 8 MAXIMUM AIR TEMPERATURE (C) 13.6 17.8 21.3 29.6 37.0 42.9 44.3 41.6 38.1 33.0 27.4 18.5 30.4 DAYS WITH MAXIMUM TEMP. >=30 0 0 0 16 30 30 31 31 30 30 4 0 202 DAYS WITH MAXIMUM TEMP. <= 0 0 0 0 0 0 0 0 0 0 0 0 0 0 TEMPERATURE RECORDS HIGHEST(C) 19.0 22.8 26.8 37.0 44.6 48.6 47.0 46.6 42.0 38.0 34.2 25.0 48.6 DAY 20 23 30 22 30 25 23 2 27 1 14 3 DIF. BETWEEN (MAX.-MIN.) (C) 10.0 12.8 14.3 18.1 18.3 21.0 19.8 16.8 18.7 19.0 18.7 11.4 16.6 MEAN DAILY TEMP. (MDT) (C) 8.6 11.4 14.1 20.5 27.8 32.4 34.4 33.2 28.7 23.5 18.1 12.8 22.1 COOLING DEG. DAYS(BASE 21 0C) 0.0 0.0 0.0 38.8 211.4 341.7 414.9 378.6 232.4 78.9 1.7 0.0 1698.5 HEATING DEG. DAYS(BASE 18 0C) 291.4 191.4 120.6 17.6 0.0 0.0 0.0 0.0 0.0 0.0 30.3 160.6 811.8 DEWPOINT (MEAN C) 4.6 4.7 5.8 8.5 7.0 9.4 11.3 11.8 7.4 6.0 3.1 5.8 7.1 MIXING RATIO (G/KG) 5.92 6.07 6.60 7.91 7.55 8.85 9.74 10.13 7.62 6.68 5.40 6.58 7.42 VAPOUR PRESSURE (HPA) 8.73 8.94 9.68 11.55 10.99 12.79 14.04 14.63 11.10 9.79 7.98 9.69 10.83 SATURATION DEF. (HPA) 3.08 5.91 8.52 17.58 34.28 47.72 49.82 43.49 37.69 26.07 17.20 6.48 24.82 RELATIVE HUMIDITY (MEAN %) 76 64 57 46 28 23 25 28 25 30 35 66 42 RELATIVE HUMIDITY (MAX. %) 93 89 82 72 44 37 40 45 41 47 51 89 61 RELATIVE HUMIDITY (MIN. %) 59 46 40 31 19 16 15 17 16 21 25 48 29 RELATIVE HUMIDITY (MEAN% 03UTC) 92 89 81 71 43 36 38 44 40 45 48 87 60 RELATIVE HUMIDITY (MEAN% 09UTC) 68 51 47 35 23 19 19 22 20 24 29 56 34 RELATIVE HUMIDITY (MEAN% 15UTC) 73 59 52 40 23 19 21 23 19 22 29 58 37 RH=0 => RELATIVE HUMIDITY < 0.5% AMOUNT OF PRECIPITATION MM. 84.2 27.8 28.9 25.0 5.6 0.0 13.0 13.6 0.0 0.0 0.0 200.3 398.4 DAYS WITH PRECIPITATION >=10 4 0 1 2 0 0 1 0 0 0 0 5 13 DAYS WITH PRECIPITATION >= 5 5 4 2 2 1 0 1 1 0 0 0 7 23 DAYS WITH PRECIPITATION >= 1 10 5 5 2 1 0 1 4 0 0 0 10 38 DAYS WITH PRECIPITATION 10 5 8 2 2 0 1 5 0 0 0 11 44 GREATEST DAILY PRECIPITATION 21.0 7.8 12.0 14.0 5.0 0.0 13.0 8.0 0.0 0.0 0.0 61.0 61.0 DAY 22 4 21 1 12 ** 25 14 ** ** ** 22 DAY WITH THUNDER STORM 3 0 1 2 1 0 1 5 1 0 0 4 18 DAYS WITH SNOW OR SLEET 0 0 0 0 0 0 0 0 0 0 0 0 0 DAYS WITH DUST 0 3 3 11 21 21 29 22 18 12 4 0 144 WIND DIRECTION (PREVAILING) 90 270 270 270 270 270 270 225 90 270 270 90 270 PREVAILING WIND SPEED(KNOTS) 9.8 11.8 10.3 11.4 11.7 10.7 13.6 11.8 13.4 10.5 10.8 12.3 11.3 PREVAILING WIND PERCENT 11.0 11.0 13.5 15.3 26.5 20.7 14.2 16.1 7.3 7.1 6.7 5.2 10.9 CALMS PERCENT OF WIND 74.8 71.0 70.3 71.3 46.5 54.7 54.2 52.9 68.7 78.7 82.7 85.8 67.6 NO. OF WIND OBSERVATION 155 145 155 150 155 150 155 155 150 155 150 155 1830 VECTOR WIND DIRECTION (MEAN) 45 264 256 269 273 249 222 155 87 217 197 1 250 VECTOR WIND MAGNITUDE(KNOTS) 0.8 1.1 1.7 2.4 3.9 3.4 2.5 1.2 0.3 0.6 0.3 0.2 1.1 WIND STEADINESES (MEAN %) 32.0 37.9 54.8 77.4 65.0 66.7 43.1 20.3 9.1 24.0 14.3 12.5 29.7 WIND SPEED (MEAN KNOTS) 2.5 2.9 3.1 3.1 6.0 5.1 5.8 5.9 3.3 2.5 2.1 1.6 3.7 FASTEST WIND DIRECTION 300 280 260 270 90 210 160 150 90 220 110 110 150 FASTEST WIND SPEED (KNOTS) 23 21 23 23 19 21 31 35 29 16 19 19 35 DAY 28 11 10 24 11 21 24 8 30 1 17 21 DAYS WITH SKY CLEAR (0-2)/8 15 20 14 15 16 29 26 20 29 31 18 12 245 DAYS WITH P.CLOUDY (3-6)/8 8 6 10 10 15 1 5 10 1 0 12 10 88 DAYS WITH CLOUDY (7-8)/8 8 3 7 5 0 0 0 1 0 0 0 9 33 DAYS WITH VISIBILITY =< 2 KM 14 8 5 3 1 0 1 1 1 0 0 10 44 DURATION OF SUNSHINE HOURS 160.5 218.8 210.6 248.7 282.8 343.2 315.2 285.2 307.5 306.1 252.7 166.6 3097.9 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION LAR (40873) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 27 41 N LONGITUDE 54 17 E DATA PROCESSING CENTER ELEVATION 792.0 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 927.2 925.2 924.1 921.6 919.8 914.1 911.7 914.0 918.8 922.9 927.0 926.9 921.1 MAX. QFE PRESSURE IN HPA 935.0 930.9 930.9 926.8 925.8 920.5 918.1 917.8 924.7 929.7 931.7 932.4 935.0 DAY-HOUR 10- 6 13- 6 13- 6 12- 6 10- 6 7- 6 6- 6 16- 6 21- 6 30- 6 24- 6 29- 6 MIN. QFE PRESSURE IN HPA 921.7 921.0 917.9 915.3 914.7 906.4 906.7 908.5 913.7 917.6 921.6 921.5 906.4 DAY-HOUR 28-12 4-12 30-12 18-12 27-12 27-15 18-15 2-15 8-12 5-12 15-12 19-12 MEAN QNH PRESSURE IN HPA 1019.0 1016.8 1015.6 1012.8 1010.9 1004.9 1002.3 1004.7 1009.9 1014.4 1018.7 1018.6 1012.4 MAX. QNH PRESSURE IN HPA 1027.4 1022.9 1022.9 1018.5 1017.4 1011.7 1009.1 1008.8 1016.3 1021.6 1023.8 1024.6 1027.4 DAY-HOUR 10- 6 13- 6 13- 6 12- 6 10- 6 7- 6 6- 6 16- 6 21- 6 30- 6 24- 6 29- 6 MIN. QNH PRESSURE IN HPA 1013.0 1012.3 1008.9 1006.1 1005.5 996.5 996.8 998.8 1004.4 1008.6 1012.9 1012.8 996.5 DAY-HOUR 28-12 4-12 30-12 18-12 27-12 27-15 18-15 2-15 8-12 5-12 15-12 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 927.1 925.2 924.3 921.8 920.4 915.1 912.8 915.0 919.7 923.6 927.5 927.1 921.6 MAX. QFE PRESSURE IN HPA 933.2 929.2 928.9 925.5 923.6 920.0 917.6 917.4 923.6 928.3 930.8 930.4 933.2 DAY 10 13 13 13 14 2 6 16 21 30 30 12 MIN. QFE PRESSURE IN HPA 923.2 921.7 918.8 916.5 916.7 908.9 909.3 911.5 916.5 919.4 924.4 922.2 908.9 DAY 3 4 22 18 27 28 19 1 9 6 17 22 MEAN QNH PRESSURE IN HPA 1018.9 1016.8 1015.9 1013.1 1011.6 1005.9 1003.4 1005.7 1010.8 1015.1 1019.2 1018.8 1012.9 MAX. QNH PRESSURE IN HPA 1025.4 1021.1 1020.8 1017.1 1015.1 1011.2 1008.6 1008.4 1015.1 1020.1 1022.8 1022.4 1025.4 DAY 10 13 13 13 14 2 6 16 21 30 30 12 MIN. QNH PRESSURE IN HPA 1014.6 1013.0 1009.9 1007.4 1007.6 999.2 999.6 1002.0 1007.4 1010.5 1015.9 1013.6 999.2 DAY 3 4 22 18 27 28 19 1 9 6 17 22 MEAN QFF PRESSURE IN HPA 1019.6 1016.8 1014.9 1010.1 1006.2 998.9 996.0 998.7 1005.2 1011.3 1017.4 1018.2 1009.4 MAX. QFF PRESSURE IN HPA 1027.6 1023.2 1020.5 1014.2 1011.2 1004.9 1000.8 1001.9 1009.6 1017.5 1022.0 1023.0 1027.6 DAY 10 13 13 13 14 2 6 16 21 30 24 12 MIN. QFF PRESSURE IN HPA 1012.5 1011.5 1006.9 1003.0 1001.5 992.3 991.7 994.4 1001.6 1005.4 1013.0 1011.4 991.7 DAY 3 4 31 18 27 28 23 1 4 6 16 22 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION LAR (40873) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 27 41 N LONGITUDE 54 17 E DATA PROCESSING CENTER ELEVATION 792.0 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 928.8 926.8 925.7 923.2 921.4 915.5 913.2 915.6 920.7 924.8 928.8 928.6 922.8 MAX. QFE PRESSURE IN HPA 935.0 930.9 930.9 926.8 925.8 920.5 918.1 917.8 924.7 929.7 931.7 932.4 935.0 DAY 10 13 13 12 10 7 6 16 21 30 24 29 MIN. QFE PRESSURE IN HPA 924.5 923.0 920.1 918.0 917.0 909.2 909.3 912.2 917.6 920.6 925.5 924.8 909.2 DAY 28 4 31 18 27 28 19 1 9 6 16 22 MEAN QNH PRESSURE IN HPA 1020.6 1018.5 1017.4 1014.7 1012.7 1006.4 1003.8 1006.5 1011.9 1016.4 1020.7 1020.4 1014.2 MAX. QNH PRESSURE IN HPA 1027.4 1022.9 1022.9 1018.5 1017.4 1011.7 1009.1 1008.8 1016.3 1021.6 1023.8 1024.6 1027.4 DAY 10 13 13 12 10 7 6 16 21 30 24 29 MIN. QNH PRESSURE IN HPA 1016.0 1014.4 1011.3 1009.0 1007.9 999.5 999.6 1002.8 1008.6 1011.8 1017.1 1016.4 999.5 DAY 28 4 31 18 27 28 19 1 9 6 16 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 927.6 925.8 924.8 922.2 920.2 914.6 912.2 914.6 919.2 923.1 927.2 927.0 921.5 MAX. QFE PRESSURE IN HPA 933.2 929.7 929.7 925.8 924.3 919.7 916.6 917.3 922.6 927.5 930.6 930.6 933.2 DAY 10 13 13 12 14 2 6 23 21 29 29 29 MIN. QFE PRESSURE IN HPA 923.5 922.5 920.1 917.2 916.3 908.1 908.9 911.0 916.0 919.1 923.3 923.5 908.1 DAY 21 11 31 18 27 28 19 1 8 6 16 19 MEAN QNH PRESSURE IN HPA 1019.4 1017.4 1016.4 1013.5 1011.4 1005.4 1002.7 1005.4 1010.3 1014.5 1018.9 1018.8 1012.8 MAX. QNH PRESSURE IN HPA 1025.4 1021.6 1021.6 1017.4 1015.8 1010.9 1007.5 1008.3 1014.0 1019.3 1022.6 1022.6 1025.4 DAY 10 13 13 12 14 2 6 23 21 29 29 29 MIN. QNH PRESSURE IN HPA 1015.0 1013.9 1011.3 1008.2 1007.2 998.3 999.2 1001.5 1006.9 1010.2 1014.7 1015.0 998.3 DAY 21 11 31 18 27 28 19 1 8 6 16 19 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 926.1 923.9 922.9 920.3 918.5 913.0 910.4 912.6 917.3 921.5 925.5 925.7 919.8 MAX. QFE PRESSURE IN HPA 931.0 927.7 927.7 924.0 922.5 917.8 914.6 915.1 921.0 925.9 930.1 928.7 931.0 DAY 10 13 13 12 14 2 6 4 21 29 29 11 MIN. QFE PRESSURE IN HPA 921.7 921.0 917.9 915.3 914.7 906.7 907.2 908.9 913.7 917.6 921.6 921.5 906.7 DAY 28 4 30 18 27 27 18 2 8 5 15 19 MEAN QNH PRESSURE IN HPA 1017.7 1015.4 1014.3 1011.5 1009.5 1003.6 1000.8 1003.2 1008.2 1012.8 1017.1 1017.3 1011.0 MAX. QNH PRESSURE IN HPA 1023.1 1019.5 1019.5 1015.5 1013.9 1008.8 1005.3 1005.9 1012.3 1017.5 1022.1 1020.6 1023.1 DAY 10 13 13 12 14 2 6 4 21 29 29 11 MIN. QNH PRESSURE IN HPA 1013.0 1012.3 1008.9 1006.1 1005.5 996.8 997.4 999.2 1004.4 1008.6 1012.9 1012.8 996.8 DAY 28 4 30 18 27 27 18 2 8 5 15 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 LAR (40873) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 27 41 N LONGITUDE 54 17 E DATA PROCESSING CENTER ELEVATION 792.0 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 926.7 924.3 923.0 920.3 918.4 912.6 910.2 912.4 917.2 921.8 926.0 926.3 919.9 MAX. QFE PRESSURE IN HPA 931.4 927.7 927.7 923.7 921.9 917.4 914.2 915.3 921.0 926.5 931.1 929.4 931.4 DAY 10 13 13 12 14 5 6 31 21 29 29 28 MIN. QFE PRESSURE IN HPA 922.6 921.4 918.3 915.5 915.0 906.4 906.7 908.5 913.7 917.6 922.4 922.4 906.4 DAY 28 18 30 18 27 27 18 2 8 5 15 19 MEAN QNH PRESSURE IN HPA 1018.4 1015.8 1014.4 1011.5 1009.4 1003.1 1000.6 1003.0 1008.2 1013.1 1017.7 1018.0 1011.1 MAX. QNH PRESSURE IN HPA 1023.5 1019.5 1019.5 1015.2 1013.2 1008.4 1004.9 1006.1 1012.3 1018.2 1023.2 1021.3 1023.5 DAY 10 13 13 12 14 5 6 31 21 29 29 28 MIN. QNH PRESSURE IN HPA 1014.0 1012.7 1009.3 1006.3 1005.8 996.5 996.8 998.8 1004.4 1008.6 1013.8 1013.8 996.5 DAY 28 18 30 18 27 27 18 2 8 5 15 19 MEAN QFF PRESSURE IN HPA 1019.2 1015.7 1013.4 1008.3 1003.9 996.0 993.1 996.0 1002.5 1009.3 1015.8 1017.4 1007.5 MAX. QFF PRESSURE IN HPA 1025.5 1021.0 1019.4 1012.5 1008.9 1002.1 997.4 1000.0 1006.7 1015.3 1023.1 1021.5 1025.5 DAY 10 13 1 12 14 2 6 31 21 29 29 11 MIN. QFF PRESSURE IN HPA 1013.4 1012.0 1007.5 1002.1 999.6 989.2 988.4 991.2 998.5 1003.1 1010.8 1011.9 988.4 DAY 2 18 30 18 27 27 23 2 4 5 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 LAR (40873) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 27 41 N LONGITUDE 54 17 E DATA PROCESSING CENTER ELEVATION 792.0 M MEANS AND EXTREMES FOR THE YEAR 1993 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AIR TEMPERATURE (C) 11.5 14.3 18.0 24.1 31.2 35.6 37.0 35.9 32.2 26.7 21.3 16.1 25.3 MINIMUN AIR TEMPERATURE (C) 6.0 8.0 8.8 13.4 19.0 22.1 25.7 24.5 21.3 14.8 9.8 5.2 14.9 DAYS WITH MINIMUM TEMP. >=21 0 0 0 0 9 27 31 30 18 0 0 0 115 DAYS WITH MINIMUM TEMP. <=-4 0 0 0 0 0 0 0 0 0 0 0 0 0 DAYS WITH FREEZING MIN.<= 0 0 0 0 0 0 0 0 0 0 0 0 0 0 TEMPERATURE RECORDS LOWEST(C) 0.8 3.0 4.8 9.4 13.4 16.0 22.8 20.0 14.6 11.0 5.8 2.0 0.8 DAY 16 8 24 7 9 5 2 1 30 28 25 14 MAXIMUM AIR TEMPERATURE (C) 16.3 19.4 23.8 30.0 37.3 41.7 42.9 42.0 38.5 32.8 27.5 23.5 31.3 DAYS WITH MAXIMUM TEMP. >=30 0 0 0 17 30 30 31 31 30 30 6 0 205 DAYS WITH MAXIMUM TEMP. <= 0 0 0 0 0 0 0 0 0 0 0 0 0 0 TEMPERATURE RECORDS HIGHEST(C) 24.2 26.8 28.0 34.0 42.6 44.2 45.6 43.6 42.4 37.0 32.6 27.0 45.6 DAY 30 21 31 19 26 18 16 20 1 1 1 2 DIF. BETWEEN (MAX.-MIN.) (C) 10.3 11.4 15.0 16.6 18.3 19.6 17.2 17.5 17.2 18.0 17.7 18.3 16.4 MEAN DAILY TEMP. (MDT) (C) 11.2 13.7 16.3 21.7 28.1 31.9 34.3 33.2 29.9 23.8 18.7 14.3 23.1 COOLING DEG. DAYS(BASE 21 0C) 0.0 0.0 0.0 42.9 221.0 325.9 412.6 379.2 268.0 87.6 13.0 0.0 1750.2 HEATING DEG. DAYS(BASE 18 0C) 211.2 120.5 59.1 0.7 0.0 0.0 0.0 0.0 0.0 0.0 21.3 113.7 526.5 DEWPOINT (MEAN C) 4.6 7.1 4.9 8.8 12.7 15.3 17.5 18.1 13.3 7.3 5.2 1.6 9.7 MIXING RATIO (G/KG) 6.19 7.47 6.19 8.16 10.36 12.34 14.11 14.75 11.75 7.15 6.32 4.78 9.13 VAPOUR PRESSURE (HPA) 9.12 10.97 9.10 11.92 15.04 17.77 20.22 21.17 16.93 10.50 9.30 7.07 13.26 SATURATION DEF. (HPA) 4.97 6.02 12.45 19.51 33.31 43.30 45.01 40.46 33.50 26.55 17.77 12.53 24.62 RELATIVE HUMIDITY (MEAN %) 68 69 47 42 35 32 33 37 37 32 38 41 43 RELATIVE HUMIDITY (MAX. %) 92 90 78 71 56 47 48 53 62 52 56 65 64 RELATIVE HUMIDITY (MIN. %) 47 51 28 27 24 23 25 27 21 20 26 25 29 RELATIVE HUMIDITY (MEAN% 03UTC) 92 88 77 71 58 47 48 53 61 51 56 64 64 RELATIVE HUMIDITY (MEAN% 09UTC) 57 58 35 32 27 28 29 32 28 26 31 33 35 RELATIVE HUMIDITY (MEAN% 15UTC) 64 64 37 32 28 25 27 29 28 22 29 32 35 RH=0 => RELATIVE HUMIDITY < 0.5% AMOUNT OF PRECIPITATION MM. 84.0 274.0 11.0 8.0 0.0 0.0 0.0 0.0 31.0 0.0 0.0 12.0 420.0 DAYS WITH PRECIPITATION >=10 3 4 0 0 0 0 0 0 1 0 0 1 9 DAYS WITH PRECIPITATION >= 5 4 6 0 1 0 0 0 0 1 0 0 1 13 DAYS WITH PRECIPITATION >= 1 8 10 4 1 0 0 0 0 2 0 0 1 26 DAYS WITH PRECIPITATION 9 10 4 1 0 0 0 0 2 1 0 1 28 GREATEST DAILY PRECIPITATION 36.0 102.0 4.0 8.0 0.0 0.0 0.0 0.0 27.0 0.0 0.0 12.0 102.0 DAY 5 4 19 12 ** ** ** ** 4 ** ** 25 DAY WITH THUNDER STORM 0 1 2 1 0 0 0 0 3 0 0 0 7 DAYS WITH SNOW OR SLEET 0 0 0 0 0 0 0 0 0 0 0 0 0 DAYS WITH DUST 0 0 13 2 25 21 28 12 0 1 0 1 103 WIND DIRECTION (PREVAILING) 90 90 270 270 270 270 90 225 180 90 270 90 270 PREVAILING WIND SPEED(KNOTS) 11.2 13.3 12.4 12.9 11.6 11.5 10.9 12.2 11.9 10.6 12.6 13.0 12.1 PREVAILING WIND PERCENT 7.7 8.6 14.2 24.7 20.6 14.0 13.5 9.0 9.3 9.0 4.7 6.5 10.0 CALMS PERCENT OF WIND 80.0 76.4 55.5 56.0 60.0 60.7 54.8 57.4 62.7 79.4 84.0 85.8 67.7 NO. OF WIND OBSERVATION 155 140 155 150 155 150 155 155 150 155 150 155 1825 VECTOR WIND DIRECTION (MEAN) 8 29 252 268 275 244 110 201 194 130 255 91 248 VECTOR WIND MAGNITUDE(KNOTS) 0.4 0.2 1.5 4.1 3.5 1.7 0.7 1.6 1.6 0.4 0.4 0.3 0.9 WIND STEADINESES (MEAN %) 18.2 7.1 28.3 74.5 77.8 36.2 13.7 33.3 38.1 18.2 22.2 17.6 24.3 WIND SPEED (MEAN KNOTS) 2.2 2.8 5.3 5.5 4.5 4.7 5.1 4.8 4.2 2.2 1.8 1.7 3.7 FASTEST WIND DIRECTION 90 270 210 310 270 160 330 180 190 120 270 90 190 FASTEST WIND SPEED (KNOTS) 17 23 23 23 19 19 33 23 58 17 19 19 58 DAY 4 22 12 11 14 8 20 27 3 5 29 13 DAYS WITH SKY CLEAR (0-2)/8 12 13 19 13 21 30 25 26 30 27 23 24 263 DAYS WITH P.CLOUDY (3-6)/8 10 6 9 9 9 0 6 5 0 4 7 6 71 DAYS WITH CLOUDY (7-8)/8 9 9 3 8 1 0 0 0 0 0 0 1 31 DAYS WITH VISIBILITY =< 2 KM 7 5 0 0 1 0 0 0 4 0 0 3 20 DURATION OF SUNSHINE HOURS 183.2 182.0 248.3 257.5 330.7 361.6 319.8 309.7 286.2 290.3 274.9 270.3 3314.5 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION LAR (40873) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 27 41 N LONGITUDE 54 17 E DATA PROCESSING CENTER ELEVATION 792.0 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 926.8 926.2 923.9 922.4 919.0 914.4 911.8 914.5 917.5 924.7 925.6 927.3 921.2 MAX. QFE PRESSURE IN HPA 933.2 932.2 928.7 928.6 924.7 918.4 916.6 919.0 922.0 930.3 931.2 933.6 933.6 DAY-HOUR 27- 6 7- 6 5- 6 1- 6 13- 6 9- 6 28- 6 8- 6 23- 6 17- 6 25- 6 26- 6 MIN. QFE PRESSURE IN HPA 919.8 920.6 915.8 917.3 911.0 910.0 906.5 909.0 912.2 917.4 921.6 922.0 906.5 DAY-HOUR 14-12 3-12 12-15 12-15 29-15 14-15 10-15 12-15 1-15 3-12 5-12 4-12 MEAN QNH PRESSURE IN HPA 1018.6 1017.8 1015.3 1013.8 1010.1 1005.1 1002.4 1005.2 1008.5 1016.3 1017.3 1019.1 1012.5 MAX. QNH PRESSURE IN HPA 1025.4 1024.4 1020.6 1020.5 1016.3 1009.5 1007.5 1010.1 1013.3 1022.3 1023.3 1025.9 1025.9 DAY-HOUR 27- 6 7- 6 5- 6 1- 6 13- 6 9- 6 28- 6 8- 6 23- 6 17- 6 25- 6 26- 6 MIN. QNH PRESSURE IN HPA 1011.0 1011.8 1006.6 1008.3 1001.5 1000.4 996.6 999.3 1002.8 1008.4 1012.9 1013.3 996.6 DAY-HOUR 14-12 3-12 12-15 12-15 29-15 14-15 10-15 12-15 1-15 3-12 5-12 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 926.8 926.3 923.7 922.9 919.6 915.2 912.7 915.4 918.4 925.5 926.2 927.7 921.7 MAX. QFE PRESSURE IN HPA 932.0 931.0 926.4 926.0 922.8 917.6 916.4 918.3 921.3 929.2 930.4 932.6 932.6 DAY 27 8 8 1 14 9 25 7 30 30 25 26 MIN. QFE PRESSURE IN HPA 920.9 921.6 919.4 919.4 912.8 911.3 909.6 912.1 916.0 920.5 923.0 924.0 909.6 DAY 14 5 10 13 30 26 10 13 1 3 7 4 MEAN QNH PRESSURE IN HPA 1018.5 1018.0 1015.2 1014.3 1010.7 1006.0 1003.3 1006.2 1009.5 1017.1 1017.9 1019.5 1013.0 MAX. QNH PRESSURE IN HPA 1024.1 1023.1 1018.1 1017.7 1014.2 1008.6 1007.3 1009.3 1012.6 1021.1 1022.4 1024.8 1024.8 DAY 27 8 8 1 14 9 25 7 30 30 25 26 MIN. QNH PRESSURE IN HPA 1012.1 1012.9 1010.5 1010.5 1003.4 1001.8 999.9 1002.6 1006.9 1011.7 1014.4 1015.5 999.9 DAY 14 5 10 13 30 26 10 13 1 3 7 4 MEAN QFF PRESSURE IN HPA 1018.5 1017.2 1013.4 1010.6 1005.0 998.9 995.5 998.8 1003.1 1012.9 1015.4 1018.8 1009.0 MAX. QFF PRESSURE IN HPA 1025.0 1024.0 1016.1 1014.9 1009.9 1001.8 999.4 1002.7 1008.4 1016.9 1021.2 1024.6 1025.0 DAY 27 8 18 1 14 5 25 28 30 17 25 26 MIN. QFF PRESSURE IN HPA 1011.4 1010.4 1007.7 1006.1 996.6 994.7 992.2 995.3 998.7 1006.7 1011.1 1013.9 992.2 DAY 9 23 10 28 30 26 10 12 2 3 7 3 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION LAR (40873) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 27 41 N LONGITUDE 54 17 E DATA PROCESSING CENTER ELEVATION 792.0 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 928.4 927.8 925.7 924.1 920.6 915.8 913.3 916.2 919.4 926.7 927.4 929.2 922.9 MAX. QFE PRESSURE IN HPA 933.2 932.2 928.7 928.6 924.7 918.4 916.6 919.0 922.0 930.3 931.2 933.6 933.6 DAY 27 7 5 1 13 9 28 8 23 17 25 26 MIN. QFE PRESSURE IN HPA 922.7 922.8 920.5 920.8 913.9 912.2 909.7 913.0 916.6 921.7 924.4 925.3 909.7 DAY 14 23 10 12 30 26 14 12 1 3 6 3 MEAN QNH PRESSURE IN HPA 1020.3 1019.6 1017.3 1015.6 1011.8 1006.7 1003.9 1007.1 1010.5 1018.4 1019.2 1021.1 1014.3 MAX. QNH PRESSURE IN HPA 1025.4 1024.4 1020.6 1020.5 1016.3 1009.5 1007.5 1010.1 1013.3 1022.3 1023.3 1025.9 1025.9 DAY 27 7 5 1 13 9 28 8 23 17 25 26 MIN. QNH PRESSURE IN HPA 1014.1 1014.2 1011.7 1012.0 1004.6 1002.8 1000.1 1003.6 1007.5 1013.0 1015.9 1016.9 1000.1 DAY 14 23 10 12 30 26 14 12 1 3 6 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 927.2 926.7 924.7 923.0 919.4 914.9 912.3 914.9 918.0 924.9 925.9 927.7 921.6 MAX. QFE PRESSURE IN HPA 931.6 931.4 928.1 928.6 923.4 917.4 915.3 917.8 921.8 928.6 929.7 933.0 933.0 DAY 27 7 18 1 13 8 27 7 30 30 25 26 MIN. QFE PRESSURE IN HPA 920.2 922.2 919.1 919.7 913.5 911.8 908.3 911.6 915.0 919.8 922.8 924.0 908.3 DAY 14 3 10 12 29 26 10 12 1 3 7 3 MEAN QNH PRESSURE IN HPA 1018.9 1018.4 1016.2 1014.4 1010.5 1005.7 1002.9 1005.7 1009.0 1016.5 1017.5 1019.4 1012.9 MAX. QNH PRESSURE IN HPA 1023.7 1023.5 1019.9 1020.5 1014.8 1008.4 1006.1 1008.8 1013.1 1020.5 1021.6 1025.2 1025.2 DAY 27 7 18 1 13 8 27 7 30 30 25 26 MIN. QNH PRESSURE IN HPA 1011.4 1013.6 1010.2 1010.9 1004.2 1002.3 998.5 1002.1 1005.8 1011.0 1014.2 1015.5 998.5 DAY 14 3 10 12 29 26 10 12 1 3 7 3 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** PRESSURE AT HOUR 1200 UTC. MEAN QFE PRESSURE IN HPA 925.5 924.8 922.6 921.1 918.0 913.5 910.8 913.2 916.0 923.2 924.2 925.9 919.9 MAX. QFE PRESSURE IN HPA 930.0 930.6 925.4 925.8 922.9 916.4 914.3 916.0 921.0 926.5 927.8 931.0 931.0 DAY 26 7 31 1 13 9 20 7 30 30 24 26 MIN. QFE PRESSURE IN HPA 919.8 920.6 916.9 917.8 912.0 910.2 907.0 909.8 912.9 917.4 921.6 922.0 907.0 DAY 14 3 12 12 29 25 10 12 1 3 5 4 MEAN QNH PRESSURE IN HPA 1017.1 1016.4 1014.0 1012.4 1009.0 1004.1 1001.2 1003.8 1006.9 1014.6 1015.7 1017.6 1011.1 MAX. QNH PRESSURE IN HPA 1022.0 1022.6 1017.0 1017.4 1014.3 1007.3 1005.0 1006.9 1012.3 1018.2 1019.6 1023.1 1023.1 DAY 26 7 31 1 13 9 20 7 30 30 24 26 MIN. QNH PRESSURE IN HPA 1011.0 1011.8 1007.8 1008.8 1002.5 1000.6 997.1 1000.2 1003.5 1008.4 1012.9 1013.3 997.1 DAY 14 3 12 12 29 25 10 12 1 3 5 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 LAR (40873) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 27 41 N LONGITUDE 54 17 E DATA PROCESSING CENTER ELEVATION 792.0 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 926.3 925.2 922.7 921.2 917.6 912.7 910.2 912.8 916.0 923.4 924.5 926.2 919.9 MAX. QFE PRESSURE IN HPA 930.4 931.2 925.2 924.4 921.8 915.5 914.0 916.0 921.0 928.0 928.0 930.8 931.2 DAY 26 7 17 1 13 9 28 7 30 29 24 26 MIN. QFE PRESSURE IN HPA 920.8 920.6 915.8 917.3 911.0 910.0 906.5 909.0 912.2 917.4 921.6 922.6 906.5 DAY 14 3 12 12 29 14 10 12 1 3 5 4 MEAN QNH PRESSURE IN HPA 1018.0 1016.8 1014.1 1012.5 1008.6 1003.3 1000.6 1003.4 1006.8 1014.8 1016.0 1017.9 1011.1 MAX. QNH PRESSURE IN HPA 1022.4 1023.3 1016.8 1015.9 1013.1 1006.3 1004.7 1006.9 1012.3 1019.8 1019.8 1022.8 1023.3 DAY 26 7 17 1 13 9 28 7 30 29 24 26 MIN. QNH PRESSURE IN HPA 1012.0 1011.8 1006.6 1008.3 1001.5 1000.4 996.6 999.3 1002.8 1008.4 1012.9 1014.0 996.6 DAY 14 3 12 12 29 14 10 12 1 3 5 4 MEAN QFF PRESSURE IN HPA 1017.9 1015.8 1012.3 1008.8 1002.7 996.1 992.6 995.8 1000.5 1010.6 1013.5 1017.1 1007.0 MAX. QFF PRESSURE IN HPA 1023.3 1023.6 1015.1 1013.5 1008.4 999.1 997.3 999.3 1007.7 1016.2 1018.5 1021.9 1023.6 DAY 26 7 18 1 13 1 28 18 30 29 24 26 MIN. QFF PRESSURE IN HPA 1012.2 1011.0 1005.4 1004.7 994.7 992.6 988.5 991.7 995.0 1003.5 1008.5 1012.7 988.5 DAY 8 4 12 12 29 25 10 12 1 3 5 3 PRESSURE AT HOUR 1800 UTC. MEAN QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** PRESSURE AT HOUR 2100 UTC. MEAN QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION LAR (40873) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 27 41 N LONGITUDE 54 17 E DATA PROCESSING CENTER ELEVATION 792.0 M MEANS AND EXTREMES FOR THE YEAR 1994 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AIR TEMPERATURE (C) 12.4 15.5 18.0 26.4 31.5 36.4 37.4 35.8 30.8 25.9 21.0 13.8 25.4 MINIMUN AIR TEMPERATURE (C) 3.8 4.6 10.3 15.8 20.9 24.4 28.5 27.1 20.5 15.9 11.3 4.6 15.6 DAYS WITH MINIMUM TEMP. >=21 0 0 0 1 16 30 31 31 14 2 0 0 125 DAYS WITH MINIMUM TEMP. <=-4 0 0 0 0 0 0 0 0 0 0 0 0 0 DAYS WITH FREEZING MIN.<= 0 3 1 0 0 0 0 0 0 0 0 0 7 11 TEMPERATURE RECORDS LOWEST(C) -2.0 -0.2 3.2 11.2 17.4 21.4 24.0 21.2 13.6 10.8 6.0 -3.6 -3.6 DAY 12 21 6 5 21 7 1 30 24 31 27 9 MAXIMUM AIR TEMPERATURE (C) 20.6 22.3 23.8 32.0 37.1 42.3 42.9 41.6 36.4 31.7 26.9 20.1 31.5 DAYS WITH MAXIMUM TEMP. >=30 0 0 0 21 30 30 31 31 30 27 3 0 203 DAYS WITH MAXIMUM TEMP. <= 0 0 0 0 0 0 0 0 0 0 0 0 0 0 TEMPERATURE RECORDS HIGHEST(C) 27.2 26.6 29.0 38.0 42.0 46.0 45.2 45.6 41.4 37.0 30.8 26.2 46.0 DAY 4 1 31 29 31 27 26 9 1 2 3 3 DIF. BETWEEN (MAX.-MIN.) (C) 16.8 17.7 13.5 16.2 16.2 17.9 14.4 14.5 15.9 15.8 15.6 15.5 15.9 MEAN DAILY TEMP. (MDT) (C) 12.2 13.4 17.1 23.9 29.0 33.3 35.7 34.4 28.5 23.8 19.1 12.4 23.6 COOLING DEG. DAYS(BASE 21 0C) 0.0 0.0 0.0 89.6 246.7 370.3 455.6 414.0 223.6 87.6 4.3 0.0 1891.7 HEATING DEG. DAYS(BASE 18 0C) 179.7 127.7 39.7 0.0 0.0 0.0 0.0 0.0 0.0 0.0 6.7 175.4 529.2 DEWPOINT (MEAN C) -1.1 -2.8 4.1 4.5 9.4 11.8 21.0 19.0 13.8 11.7 11.4 1.7 8.7 MIXING RATIO (G/KG) 4.08 3.57 6.04 5.94 8.35 9.84 18.34 15.61 11.52 9.75 9.56 5.05 8.97 VAPOUR PRESSURE (HPA) 6.02 5.27 8.87 8.71 12.16 14.19 25.97 22.31 16.67 14.25 14.00 7.46 12.99 SATURATION DEF. (HPA) 9.50 13.53 12.82 27.80 36.28 49.68 40.31 38.65 29.97 20.92 12.04 9.48 25.08 RELATIVE HUMIDITY (MEAN %) 45 32 48 28 28 24 41 40 39 45 58 48 40 RELATIVE HUMIDITY (MAX. %) 72 55 79 48 45 36 58 62 59 71 78 76 62 RELATIVE HUMIDITY (MIN. %) 22 18 28 17 19 17 31 26 25 29 43 29 25 RELATIVE HUMIDITY (MEAN% 03UTC) 69 54 75 48 44 36 58 61 58 70 78 74 60 RELATIVE HUMIDITY (MEAN% 09UTC) 32 24 39 21 23 21 37 33 31 34 49 36 32 RELATIVE HUMIDITY (MEAN% 15UTC) 30 22 35 20 23 18 34 33 31 36 54 40 31 RH=0 => RELATIVE HUMIDITY < 0.5% AMOUNT OF PRECIPITATION MM. 9.0 2.0 71.2 2.0 2.0 0.0 6.0 5.6 3.5 8.6 1.4 6.0 117.3 DAYS WITH PRECIPITATION >=10 0 0 2 0 0 0 0 0 0 0 0 0 2 DAYS WITH PRECIPITATION >= 5 1 0 5 0 0 0 1 0 0 0 0 0 7 DAYS WITH PRECIPITATION >= 1 2 2 12 2 1 0 1 3 2 3 0 2 30 DAYS WITH PRECIPITATION 2 2 12 2 1 0 1 4 4 4 3 2 37 GREATEST DAILY PRECIPITATION 6.0 1.0 19.0 1.0 2.0 0.0 6.0 2.0 2.0 3.0 0.7 4.0 19.0 DAY 24 3 27 2 6