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 ** 13 9 6 10 17 5 DAY WITH THUNDER STORM 0 0 4 0 0 0 0 6 5 3 1 0 19 DAYS WITH SNOW OR SLEET 0 0 0 0 0 0 0 0 0 0 0 0 0 DAYS WITH DUST 0 4 6 11 14 10 18 12 8 5 5 4 97 WIND DIRECTION (PREVAILING) 270 270 90 270 270 270 90 90 90 90 270 270 270 PREVAILING WIND SPEED(KNOTS) 10.9 12.4 12.4 11.8 12.4 12.4 12.3 14.5 12.5 11.5 11.2 10.9 11.6 PREVAILING WIND PERCENT 8.7 15.7 10.3 13.3 23.2 13.3 17.4 16.8 10.0 9.0 9.3 18.7 11.1 CALMS PERCENT OF WIND 78.4 69.3 70.3 67.3 58.1 68.0 65.8 61.3 70.0 73.5 66.7 66.5 68.3 NO. OF WIND OBSERVATION 218 140 155 150 155 150 155 155 150 155 150 155 1888 VECTOR WIND DIRECTION (MEAN) 282 261 149 289 268 270 81 114 184 138 262 264 255 VECTOR WIND MAGNITUDE(KNOTS) 0.6 2.6 0.3 1.5 3.7 1.6 0.6 1.9 1.0 0.7 1.2 2.6 0.9 WIND STEADINESES (MEAN %) 25.0 72.2 9.4 38.5 74.0 43.2 14.3 40.4 26.3 23.3 31.6 74.3 23.7 WIND SPEED (MEAN KNOTS) 2.4 3.6 3.2 3.9 5.0 3.7 4.2 4.7 3.8 3.0 3.8 3.5 3.8 FASTEST WIND DIRECTION 170 250 90 70 220 270 270 90 270 230 310 270 90 FASTEST WIND SPEED (KNOTS) 19 23 27 21 27 23 21 43 29 25 27 19 43 DAY 10 12 26 5 9 4 20 19 3 18 8 17 DAYS WITH SKY CLEAR (0-2)/8 17 23 14 17 19 30 18 19 27 24 16 24 248 DAYS WITH P.CLOUDY (3-6)/8 11 4 8 11 10 0 12 12 3 7 14 5 97 DAYS WITH CLOUDY (7-8)/8 3 1 9 2 2 0 1 0 0 0 0 2 20 DAYS WITH VISIBILITY =< 2 KM 3 0 6 0 3 2 3 3 1 0 1 2 24 DURATION OF SUNSHINE HOURS 249.1 266.1 203.4 288.9 302.3 353.6 318.0 309.3 287.4 295.0 271.0 271.7 3415.8 ======================================================================================================================= 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 1994 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL MEAN QFE PRESSURE IN HPA 926.1 923.7 924.2 921.5 919.0 911.8 909.3 911.8 919.6 924.4 926.6 928.2 920.5 MAX. QFE PRESSURE IN HPA 934.1 929.1 929.4 929.0 925.0 916.3 913.6 917.1 928.4 929.6 931.2 932.8 934.1 DAY-HOUR 28- 6 21- 6 4- 6 16- 9 14- 6 1- 6 3- 6 15- 6 24- 6 10- 6 24- 6 28- 6 MIN. QFE PRESSURE IN HPA 920.3 917.6 919.8 916.4 913.8 907.0 904.8 906.1 909.7 918.7 921.8 919.0 904.8 DAY-HOUR 25-12 12-12 21-15 12-15 31-15 27-15 31-15 1-12 1-15 4-12 13-12 4-12 MEAN QNH PRESSURE IN HPA 1017.8 1015.1 1015.7 1012.8 1010.1 1002.3 999.6 1002.3 1010.7 1015.9 1018.3 1020.1 1011.7 MAX. QNH PRESSURE IN HPA 1026.4 1021.0 1021.3 1020.9 1016.6 1007.2 1004.3 1008.0 1020.2 1021.5 1023.3 1025.0 1026.4 DAY-HOUR 28- 6 21- 6 4- 6 16- 9 14- 6 1- 6 3- 6 15- 6 24- 6 10- 6 24- 6 28- 6 MIN. QNH PRESSURE IN HPA 1011.5 1008.6 1011.0 1007.3 1004.5 997.1 994.8 996.2 1000.1 1009.8 1013.1 1010.1 994.8 DAY-HOUR 25-12 12-12 21-15 12-15 31-15 27-15 31-15 1-12 1-15 4-12 13-12 4-12 MEAN QFF PRESSURE IN HPA 1017.0 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA 1025.6 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY-HOUR 28- 3 **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** MIN. QFF PRESSURE IN HPA 1010.2 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY-HOUR 6- 0 **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** PRESSURE AT HOUR 0000 UTC. MEAN QFE PRESSURE IN HPA 926.3 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFE PRESSURE IN HPA 929.2 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY 20 ** ** ** ** ** ** ** ** ** ** ** MIN. QFE PRESSURE IN HPA 921.6 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY 6 ** ** ** ** ** ** ** ** ** ** ** MEAN QNH PRESSURE IN HPA 1018.0 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QNH PRESSURE IN HPA 1021.1 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY 20 ** ** ** ** ** ** ** ** ** ** ** MIN. QNH PRESSURE IN HPA 1012.9 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY 6 ** ** ** ** ** ** ** ** ** ** ** MEAN QFF PRESSURE IN HPA 1016.8 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA 1020.7 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY 20 ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA 1010.2 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY 6 ** ** ** ** ** ** ** ** ** ** ** PRESSURE AT HOUR 0300 UTC. MEAN QFE PRESSURE IN HPA 926.3 923.9 924.1 922.0 919.6 912.7 910.4 912.7 920.2 925.1 927.0 928.4 921.0 MAX. QFE PRESSURE IN HPA 932.0 927.4 928.5 926.2 924.4 915.8 912.6 916.2 927.0 928.5 929.6 931.0 932.0 DAY 28 21 1 6 15 1 3 15 23 10 24 28 MIN. QFE PRESSURE IN HPA 921.5 919.2 920.0 918.6 916.1 909.4 907.9 908.5 912.4 921.1 923.8 920.0 907.9 DAY 6 12 12 12 28 28 31 1 1 4 13 4 MEAN QNH PRESSURE IN HPA 1017.9 1015.4 1015.6 1013.3 1010.7 1003.3 1000.8 1003.3 1011.4 1016.7 1018.8 1020.2 1012.3 MAX. QNH PRESSURE IN HPA 1024.1 1019.2 1020.4 1017.9 1015.9 1006.6 1003.2 1007.1 1018.7 1020.4 1021.5 1023.1 1024.1 DAY 28 21 1 6 15 1 3 15 23 10 24 28 MIN. QNH PRESSURE IN HPA 1012.8 1010.3 1011.2 1009.7 1007.0 999.7 998.1 998.8 1003.0 1012.4 1015.3 1011.2 998.1 DAY 6 12 12 12 28 28 31 1 1 4 13 4 MEAN QFF PRESSURE IN HPA 1017.7 1014.6 1013.5 1009.0 1004.8 995.9 992.3 995.5 1005.4 1012.5 1016.2 1020.1 1008.1 MAX. QFF PRESSURE IN HPA 1025.6 1019.9 1019.0 1014.5 1009.7 999.4 995.3 999.3 1014.4 1017.0 1019.4 1024.9 1025.6 DAY 28 21 1 6 15 1 3 15 24 10 22 28 MIN. QFF PRESSURE IN HPA 1010.7 1009.0 1009.1 1005.2 1000.1 991.7 989.2 990.6 995.5 1006.9 1012.4 1007.5 989.2 DAY 6 12 12 30 28 28 31 1 1 4 26 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 1994 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 0600 UTC. MEAN QFE PRESSURE IN HPA 927.8 925.6 925.8 923.3 920.5 913.3 910.9 913.6 921.2 926.3 928.4 930.0 922.2 MAX. QFE PRESSURE IN HPA 934.1 929.1 929.4 928.6 925.0 916.3 913.6 917.1 928.4 929.6 931.2 932.8 934.1 DAY 28 21 4 16 14 1 3 15 24 10 24 28 MIN. QFE PRESSURE IN HPA 923.0 920.7 923.0 919.8 916.6 910.1 908.4 909.4 913.2 922.0 925.0 921.0 908.4 DAY 25 12 12 3 28 28 21 3 1 17 13 4 MEAN QNH PRESSURE IN HPA 1019.6 1017.2 1017.5 1014.7 1011.7 1004.0 1001.3 1004.2 1012.5 1018.0 1020.3 1021.9 1013.6 MAX. QNH PRESSURE IN HPA 1026.4 1021.0 1021.3 1020.5 1016.6 1007.2 1004.3 1008.0 1020.2 1021.5 1023.3 1025.0 1026.4 DAY 28 21 4 16 14 1 3 15 24 10 24 28 MIN. QNH PRESSURE IN HPA 1014.4 1011.9 1014.4 1011.0 1007.5 1000.5 998.7 999.7 1003.8 1013.3 1016.6 1012.3 998.7 DAY 25 12 12 3 28 28 21 3 1 17 13 4 MEAN QFF PRESSURE IN HPA 1019.2 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA 1023.4 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY 19 ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA 1013.7 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY 6 ** ** ** ** ** ** ** ** ** ** ** PRESSURE AT HOUR 0900 UTC. MEAN QFE PRESSURE IN HPA 926.6 924.3 925.1 922.2 919.5 912.3 909.8 912.3 920.1 924.7 926.6 928.5 921.0 MAX. QFE PRESSURE IN HPA 933.4 927.8 928.0 929.0 924.6 914.8 912.6 915.1 927.0 928.2 929.6 931.1 933.4 DAY 28 20 4 16 14 1 3 14 23 10 24 29 MIN. QFE PRESSURE IN HPA 922.1 919.4 921.0 918.3 915.8 908.8 907.0 907.8 912.4 921.2 922.9 920.0 907.0 DAY 25 12 12 3 28 27 30 1 1 3 13 4 MEAN QNH PRESSURE IN HPA 1018.3 1015.8 1016.6 1013.6 1010.6 1002.8 1000.2 1002.8 1011.2 1016.2 1018.3 1020.3 1012.2 MAX. QNH PRESSURE IN HPA 1025.6 1019.6 1019.8 1020.9 1016.1 1005.6 1003.2 1005.9 1018.7 1020.0 1021.5 1023.2 1025.6 DAY 28 20 4 16 14 1 3 14 23 10 24 29 MIN. QNH PRESSURE IN HPA 1013.4 1010.5 1012.3 1009.3 1006.6 999.1 997.1 998.0 1003.0 1012.5 1014.3 1011.2 997.1 DAY 25 12 12 3 28 27 30 1 1 3 13 4 MEAN QFF PRESSURE IN HPA 1017.2 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA 1021.2 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY 19 ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA 1012.6 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY 6 ** ** ** ** ** ** ** ** ** ** ** PRESSURE AT HOUR 1200 UTC. MEAN QFE PRESSURE IN HPA 924.7 922.2 923.1 920.3 917.8 910.6 908.1 910.2 918.1 922.8 925.1 926.8 919.2 MAX. QFE PRESSURE IN HPA 933.4 926.0 926.0 926.6 923.0 912.8 910.4 913.4 925.6 926.6 927.1 929.6 933.4 DAY 28 28 4 16 14 14 3 14 23 18 24 28 MIN. QFE PRESSURE IN HPA 920.3 917.6 920.0 916.7 914.0 907.8 905.2 906.1 910.2 918.7 921.8 919.0 905.2 DAY 25 12 12 3 27 27 31 1 1 4 13 4 MEAN QNH PRESSURE IN HPA 1016.2 1013.6 1014.5 1011.5 1008.8 1001.1 998.3 1000.6 1009.2 1014.2 1016.7 1018.6 1010.3 MAX. QNH PRESSURE IN HPA 1025.6 1017.7 1017.7 1018.3 1014.4 1003.4 1000.8 1004.1 1017.2 1018.3 1018.8 1021.5 1025.6 DAY 28 28 4 16 14 14 3 14 23 18 24 28 MIN. QNH PRESSURE IN HPA 1011.5 1008.6 1011.2 1007.6 1004.7 998.0 995.2 996.2 1000.6 1009.8 1013.1 1010.1 995.2 DAY 25 12 12 3 27 27 31 1 1 4 13 4 MEAN QFF PRESSURE IN HPA 1015.3 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA 1019.3 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY 19 ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA 1011.1 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY 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 1994 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 1500 UTC. MEAN QFE PRESSURE IN HPA 925.0 922.4 923.0 920.1 917.6 910.1 907.5 910.1 918.3 923.1 925.9 927.5 919.2 MAX. QFE PRESSURE IN HPA 932.0 925.8 926.9 925.6 922.2 912.0 909.8 913.1 925.4 927.7 928.7 929.9 932.0 DAY 28 20 16 16 14 14 3 14 23 18 8 27 MIN. QFE PRESSURE IN HPA 920.3 918.0 919.8 916.4 913.8 907.0 904.8 906.1 909.7 918.7 922.4 921.0 904.8 DAY 25 12 21 12 31 27 31 1 1 4 13 4 MEAN QNH PRESSURE IN HPA 1016.6 1013.7 1014.4 1011.2 1008.6 1000.5 997.7 1000.5 1009.4 1014.5 1017.5 1019.3 1010.3 MAX. QNH PRESSURE IN HPA 1024.1 1017.4 1018.6 1017.2 1013.6 1002.5 1000.2 1003.7 1017.0 1019.5 1020.6 1021.9 1024.1 DAY 28 20 16 16 14 14 3 14 23 18 8 27 MIN. QNH PRESSURE IN HPA 1011.5 1009.0 1011.0 1007.3 1004.5 997.1 994.8 996.2 1000.1 1009.8 1013.8 1012.3 994.8 DAY 25 12 21 12 31 27 31 1 1 4 13 4 MEAN QFF PRESSURE IN HPA 1016.3 1013.0 1012.2 1006.9 1002.5 993.0 989.0 992.6 1003.4 1010.3 1014.8 1019.2 1006.1 MAX. QFF PRESSURE IN HPA 1025.1 1017.9 1017.8 1013.5 1007.6 995.5 992.0 995.9 1012.4 1016.0 1018.3 1023.6 1025.1 DAY 28 20 16 16 14 14 3 14 23 18 22 27 MIN. QFF PRESSURE IN HPA 1011.4 1007.7 1008.3 1001.6 997.2 988.8 985.8 988.0 992.5 1004.5 1010.6 1009.9 985.8 DAY 31 12 21 30 31 27 21 1 1 4 13 4 PRESSURE AT HOUR 1800 UTC. MEAN QFE PRESSURE IN HPA 926.2 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFE PRESSURE IN HPA 928.8 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY 19 ** ** ** ** ** ** ** ** ** ** ** MIN. QFE PRESSURE IN HPA 923.4 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY 16 ** ** ** ** ** ** ** ** ** ** ** MEAN QNH PRESSURE IN HPA 1017.8 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QNH PRESSURE IN HPA 1020.7 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY 19 ** ** ** ** ** ** ** ** ** ** ** MIN. QNH PRESSURE IN HPA 1014.8 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY 16 ** ** ** ** ** ** ** ** ** ** ** MEAN QFF PRESSURE IN HPA 1017.3 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA 1021.0 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY 19 ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA 1013.9 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY 6 ** ** ** ** ** ** ** ** ** ** ** PRESSURE AT HOUR 2100 UTC. MEAN QFE PRESSURE IN HPA 926.4 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFE PRESSURE IN HPA 929.2 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY 19 ** ** ** ** ** ** ** ** ** ** ** MIN. QFE PRESSURE IN HPA 922.0 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY 6 ** ** ** ** ** ** ** ** ** ** ** MEAN QNH PRESSURE IN HPA 1018.0 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QNH PRESSURE IN HPA 1021.1 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY 19 ** ** ** ** ** ** ** ** ** ** ** MIN. QNH PRESSURE IN HPA 1013.3 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY 6 ** ** ** ** ** ** ** ** ** ** ** MEAN QFF PRESSURE IN HPA 1016.7 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA 1020.7 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY 19 ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA 1011.6 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY 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 1995 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AIR TEMPERATURE (C) 14.6 15.5 17.5 23.4 31.1 35.2 36.0 35.5 31.3 26.3 20.0 13.0 25.0 MINIMUN AIR TEMPERATURE (C) 4.6 8.2 9.8 13.7 18.9 21.9 25.8 25.8 19.6 14.1 8.3 8.0 14.9 DAYS WITH MINIMUM TEMP. >=21 0 0 0 0 4 23 30 31 12 0 0 0 100 DAYS WITH MINIMUM TEMP. <=-4 0 0 0 0 0 0 0 0 0 0 0 0 0 DAYS WITH FREEZING MIN.<= 0 0 0 0 0 0 0 0 0 0 0 0 0 0 TEMPERATURE RECORDS LOWEST(C) 1.0 2.8 5.8 8.8 13.8 20.0 20.4 22.8 15.4 9.8 0.6 3.8 0.6 DAY 2 12 2 8 11 1 25 31 27 16 28 31 MAXIMUM AIR TEMPERATURE (C) 21.0 20.1 22.2 28.8 36.4 40.9 42.0 41.4 37.7 32.9 26.9 16.8 30.6 DAYS WITH MAXIMUM TEMP. >=30 0 0 0 11 31 30 31 31 30 29 7 0 200 DAYS WITH MAXIMUM TEMP. <= 0 0 0 0 0 0 0 0 0 0 0 0 0 0 TEMPERATURE RECORDS HIGHEST(C) 22.4 24.6 28.2 32.4 39.0 44.6 45.6 43.8 42.6 35.2 31.4 22.2 45.6 DAY 19 4 26 20 28 13 9 8 1 3 4 2 DIF. BETWEEN (MAX.-MIN.) (C) 16.4 11.9 12.4 15.1 17.5 19.0 16.2 15.6 18.1 18.8 18.6 8.8 15.7 MEAN DAILY TEMP. (MDT) (C) 12.8 14.2 16.0 21.3 27.7 31.4 33.9 33.6 28.7 23.5 17.6 12.4 22.7 COOLING DEG. DAYS(BASE 21 0C) 0.0 0.0 0.2 28.1 206.6 312.3 399.7 390.6 230.2 77.6 1.6 0.0 1646.9 HEATING DEG. DAYS(BASE 18 0C) 161.6 108.2 66.7 0.7 0.0 0.0 0.0 0.0 0.0 0.0 49.1 174.1 560.4 DEWPOINT (MEAN C) 2.9 6.1 7.8 12.2 9.6 18.5 18.2 14.9 11.9 8.7 2.9 8.2 10.2 MIXING RATIO (G/KG) 5.24 6.63 7.51 10.13 8.97 16.50 15.30 12.44 9.93 8.41 5.37 7.51 9.49 VAPOUR PRESSURE (HPA) 7.75 9.74 11.01 14.74 13.04 23.49 21.79 17.87 14.41 12.27 7.91 11.06 13.76 SATURATION DEF. (HPA) 9.79 8.46 9.83 15.35 34.01 36.05 40.55 42.17 33.80 24.21 17.35 4.30 22.99 RELATIVE HUMIDITY (MEAN %) 49 58 58 53 30 41 39 35 35 37 35 75 45 RELATIVE HUMIDITY (MAX. %) 74 85 87 77 47 51 57 65 64 59 57 93 68 RELATIVE HUMIDITY (MIN. %) 32 39 41 40 21 34 27 18 20 25 22 59 32 RELATIVE HUMIDITY (MEAN% 03UTC) 73 83 86 75 47 50 56 65 62 59 57 92 67 RELATIVE HUMIDITY (MEAN% 09UTC) 39 49 47 43 25 37 32 25 23 28 27 66 37 RELATIVE HUMIDITY (MEAN% 15UTC) 41 49 50 49 27 43 38 24 30 32 31 76 41 RH=0 => RELATIVE HUMIDITY < 0.5% AMOUNT OF PRECIPITATION MM. 5.0 62.6 53.8 18.6 0.0 0.0 108.0 21.8 8.4 0.0 0.0 162.3 440.5 DAYS WITH PRECIPITATION >=10 0 2 2 1 0 0 3 1 0 0 0 5 14 DAYS WITH PRECIPITATION >= 5 0 3 4 1 0 0 5 1 1 0 0 6 21 DAYS WITH PRECIPITATION >= 1 2 5 6 1 0 0 6 1 2 0 0 9 32 DAYS WITH PRECIPITATION 2 8 8 2 0 0 6 2 3 0 0 10 41 GREATEST DAILY PRECIPITATION 4.0 38.0 20.0 18.0 0.0 0.0 40.0 21.0 5.0 0.0 0.0 75.0 75.0 DAY 26 9 14 24 ** ** 24 23 16 ** ** 12 DAY WITH THUNDER STORM 0 1 1 1 1 0 6 4 3 1 0 4 22 DAYS WITH SNOW OR SLEET 0 0 0 0 0 0 0 0 0 0 0 0 0 DAYS WITH DUST 7 3 4 5 7 4 13 18 4 8 3 0 76 WIND DIRECTION (PREVAILING) 270 270 90 270 270 270 270 90 225 270 270 90 270 PREVAILING WIND SPEED(KNOTS) 11.0 12.0 12.3 12.8 12.7 11.2 11.6 12.6 10.6 10.4 12.3 11.4 11.5 PREVAILING WIND PERCENT 13.5 15.7 13.5 22.0 20.6 14.7 10.3 11.0 13.3 11.0 8.0 16.1 11.7 CALMS PERCENT OF WIND 71.6 59.3 58.1 55.3 51.0 58.7 65.8 56.8 68.7 64.5 83.3 76.1 64.1 NO. OF WIND OBSERVATION 155 140 155 150 155 150 155 155 150 155 150 155 1825 VECTOR WIND DIRECTION (MEAN) 280 246 133 250 257 233 226 159 212 199 260 83 233 VECTOR WIND MAGNITUDE(KNOTS) 1.6 0.6 1.3 3.3 3.2 2.0 1.1 0.7 1.3 1.2 0.8 1.4 1.0 WIND STEADINESES (MEAN %) 53.3 12.5 27.1 61.1 52.5 41.7 26.8 14.3 35.1 31.6 44.4 56.0 24.4 WIND SPEED (MEAN KNOTS) 3.0 4.8 4.8 5.4 6.1 4.8 4.1 4.9 3.7 3.8 1.8 2.5 4.1 FASTEST WIND DIRECTION 280 280 60 270 280 140 340 270 120 270 90 90 340 FASTEST WIND SPEED (KNOTS) 19 21 17 23 23 21 58 37 43 23 23 21 58 DAY 1 9 3 21 9 20 21 22 12 14 7 25 DAYS WITH SKY CLEAR (0-2)/8 26 15 16 13 29 30 20 30 29 30 28 11 277 DAYS WITH P.CLOUDY (3-6)/8 4 7 7 12 2 0 9 1 1 1 2 8 54 DAYS WITH CLOUDY (7-8)/8 1 6 8 5 0 0 2 0 0 0 0 12 34 DAYS WITH VISIBILITY =< 2 KM 1 2 5 1 0 0 1 2 1 0 0 18 31 DURATION OF SUNSHINE HOURS 280.9 207.7 241.8 267.0 355.7 370.1 324.8 324.7 321.6 316.8 294.1 156.6 3461.8 ======================================================================================================================= 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 1995 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL MEAN QFE PRESSURE IN HPA 927.5 924.7 923.6 921.9 919.4 914.2 909.4 912.7 918.2 923.0 925.3 927.3 920.6 MAX. QFE PRESSURE IN HPA 932.9 930.0 929.7 928.1 924.7 921.8 913.8 918.4 924.6 929.7 930.7 931.5 932.9 DAY-HOUR 18- 6 1- 6 3- 6 4- 6 27- 6 2- 6 4- 6 19- 6 13- 6 25- 6 30- 6 19- 6 MIN. QFE PRESSURE IN HPA 922.1 919.7 918.1 916.8 912.9 908.6 903.1 905.7 911.5 917.2 918.2 922.7 903.1 DAY-HOUR 9-12 27-12 14-12 15-12 15-15 18-15 20-12 8-15 4-15 15-12 6-12 25-12 MEAN QNH PRESSURE IN HPA 1019.2 1016.3 1015.1 1013.2 1010.5 1004.9 999.7 1003.3 1009.2 1014.4 1016.9 1019.0 1011.8 MAX. QNH PRESSURE IN HPA 1025.1 1022.0 1021.6 1019.9 1016.3 1013.1 1004.5 1009.5 1016.1 1021.6 1022.7 1023.6 1025.1 DAY-HOUR 18- 6 1- 6 3- 6 4- 6 27- 6 2- 6 4- 6 19- 6 13- 6 25- 6 30- 6 19- 6 MIN. QNH PRESSURE IN HPA 1013.4 1010.9 1009.1 1007.7 1003.5 998.9 992.9 995.7 1002.0 1008.2 1009.2 1014.1 992.9 DAY-HOUR 9-12 27-12 14-12 15-12 15-15 18-15 20-12 8-15 4-15 15-12 6-12 25-12 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY-HOUR **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY-HOUR **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** PRESSURE AT HOUR 0000 UTC. MEAN QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** PRESSURE AT HOUR 0300 UTC. MEAN QFE PRESSURE IN HPA 927.7 924.8 923.7 922.3 920.2 915.1 910.4 913.8 918.9 923.5 925.8 927.3 921.1 MAX. QFE PRESSURE IN HPA 931.0 928.4 928.1 926.8 924.2 921.0 913.6 917.6 923.2 928.0 929.6 929.9 931.0 DAY 19 1 3 4 27 3 4 19 13 29 30 19 MIN. QFE PRESSURE IN HPA 925.2 921.0 918.2 917.0 915.8 911.5 905.9 909.9 914.6 920.1 921.0 922.9 905.9 DAY 9 28 14 17 15 18 17 4 1 15 6 25 MEAN QNH PRESSURE IN HPA 1019.5 1016.3 1015.2 1013.6 1011.4 1005.9 1000.8 1004.5 1010.0 1015.0 1017.4 1019.0 1012.4 MAX. QNH PRESSURE IN HPA 1023.1 1020.2 1019.9 1018.5 1015.7 1012.3 1004.3 1008.6 1014.6 1019.8 1021.5 1021.9 1023.1 DAY 19 1 3 4 27 3 4 19 13 29 30 19 MIN. QNH PRESSURE IN HPA 1016.8 1012.3 1009.2 1007.9 1006.6 1002.0 996.0 1000.3 1005.3 1011.3 1012.3 1014.3 996.0 DAY 9 28 14 17 15 18 17 4 1 15 6 25 MEAN QFF PRESSURE IN HPA 1019.1 1015.0 1013.4 1010.1 1005.8 998.6 993.1 996.8 1004.2 1011.1 1015.7 1018.5 1008.4 MAX. QFF PRESSURE IN HPA 1022.7 1019.1 1018.9 1015.6 1010.1 1005.5 997.9 1002.0 1010.8 1017.0 1021.9 1021.9 1022.7 DAY 16 1 3 3 27 2 29 19 13 29 28 19 MIN. QFF PRESSURE IN HPA 1015.8 1010.6 1008.3 1004.4 1002.1 994.8 987.4 992.4 997.8 1007.0 1009.1 1013.0 987.4 DAY 22 23 27 17 16 23 17 3 1 14 6 25 ======================================================================================================================= 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 1995 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 0600 UTC. MEAN QFE PRESSURE IN HPA 929.3 926.4 925.2 923.6 921.0 915.6 910.8 914.4 919.9 924.9 927.0 928.7 922.2 MAX. QFE PRESSURE IN HPA 932.9 930.0 929.7 928.1 924.7 921.8 913.8 918.4 924.6 929.7 930.7 931.5 932.9 DAY 18 1 3 4 27 2 4 19 13 25 30 19 MIN. QFE PRESSURE IN HPA 926.3 922.7 919.8 918.3 916.6 912.1 906.6 910.3 915.0 921.3 921.5 923.1 906.6 DAY 13 27 14 17 15 18 17 8 1 15 6 25 MEAN QNH PRESSURE IN HPA 1021.2 1018.1 1016.8 1015.0 1012.2 1006.4 1001.2 1005.1 1011.1 1016.4 1018.8 1020.5 1013.6 MAX. QNH PRESSURE IN HPA 1025.1 1022.0 1021.6 1019.9 1016.3 1013.1 1004.5 1009.5 1016.1 1021.6 1022.7 1023.6 1025.1 DAY 18 1 3 4 27 2 4 19 13 25 30 19 MIN. QNH PRESSURE IN HPA 1018.0 1014.1 1011.0 1009.3 1007.5 1002.6 996.7 1000.7 1005.8 1012.6 1012.8 1014.5 996.7 DAY 13 27 14 17 15 18 17 8 1 15 6 25 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** PRESSURE AT HOUR 0900 UTC. MEAN QFE PRESSURE IN HPA 927.8 925.2 924.2 922.5 919.8 914.6 909.7 913.2 918.5 923.2 925.4 927.6 921.0 MAX. QFE PRESSURE IN HPA 931.1 928.6 928.6 926.2 923.6 920.8 912.9 917.0 923.0 928.0 930.2 930.8 931.1 DAY 18 1 3 4 27 2 28 11 13 29 30 19 MIN. QFE PRESSURE IN HPA 924.4 921.5 919.2 918.3 915.0 910.6 905.2 908.4 913.2 919.2 919.8 924.0 905.2 DAY 9 27 14 17 15 18 20 8 1 15 6 25 MEAN QNH PRESSURE IN HPA 1019.6 1016.8 1015.7 1013.9 1011.0 1005.3 1000.0 1003.8 1009.6 1014.6 1017.0 1019.4 1012.2 MAX. QNH PRESSURE IN HPA 1023.2 1020.5 1020.5 1017.9 1015.1 1012.0 1003.5 1007.9 1014.4 1019.8 1022.2 1022.8 1023.2 DAY 18 1 3 4 27 2 28 11 13 29 30 19 MIN. QNH PRESSURE IN HPA 1015.9 1012.8 1010.3 1009.3 1005.8 1001.0 995.2 998.7 1003.8 1010.3 1011.0 1015.5 995.2 DAY 9 27 14 17 15 18 20 8 1 15 6 25 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** PRESSURE AT HOUR 1200 UTC. MEAN QFE PRESSURE IN HPA 926.0 923.4 922.4 920.6 918.2 913.0 908.0 911.4 916.6 921.6 923.8 926.1 919.3 MAX. QFE PRESSURE IN HPA 929.7 926.8 926.2 924.6 921.3 919.0 911.0 915.0 920.6 926.0 929.0 929.0 929.7 DAY 18 1 3 12 26 1 4 11 13 25 30 19 MIN. QFE PRESSURE IN HPA 922.1 919.7 918.1 916.8 913.0 909.0 903.1 906.8 911.9 917.2 918.2 922.7 903.1 DAY 9 27 14 15 15 18 20 8 2 15 6 25 MEAN QNH PRESSURE IN HPA 1017.7 1014.8 1013.8 1011.9 1009.2 1003.6 998.2 1001.9 1007.5 1012.9 1015.3 1017.7 1010.4 MAX. QNH PRESSURE IN HPA 1021.6 1018.5 1017.9 1016.1 1012.6 1010.1 1001.5 1005.8 1011.8 1017.7 1020.9 1020.9 1021.6 DAY 18 1 3 12 26 1 4 11 13 25 30 19 MIN. QNH PRESSURE IN HPA 1013.4 1010.9 1009.1 1007.7 1003.6 999.3 992.9 996.9 1002.4 1008.2 1009.2 1014.1 992.9 DAY 9 27 14 15 15 18 20 8 2 15 6 25 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION 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 1995 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 1500 UTC. MEAN QFE PRESSURE IN HPA 926.6 923.9 922.6 920.7 917.9 912.6 908.1 911.1 916.9 921.9 924.3 926.8 919.4 MAX. QFE PRESSURE IN HPA 930.1 926.8 926.3 925.2 921.8 919.0 912.3 914.8 923.6 926.6 929.6 929.7 930.1 DAY 18 1 2 12 26 2 28 11 12 24 30 19 MIN. QFE PRESSURE IN HPA 922.8 919.7 918.8 916.8 912.9 908.6 904.0 905.7 911.5 917.7 919.2 923.5 904.0 DAY 9 27 14 16 15 18 17 8 4 15 6 25 MEAN QNH PRESSURE IN HPA 1018.3 1015.4 1014.0 1011.9 1008.9 1003.2 998.3 1001.5 1007.8 1013.2 1015.8 1018.6 1010.6 MAX. QNH PRESSURE IN HPA 1022.1 1018.5 1018.0 1016.8 1013.1 1010.1 1002.9 1005.6 1015.1 1018.3 1021.5 1021.6 1022.1 DAY 18 1 2 12 26 2 28 11 12 24 30 19 MIN. QNH PRESSURE IN HPA 1014.2 1010.9 1009.9 1007.7 1003.5 998.9 993.9 995.7 1002.0 1008.7 1010.3 1015.0 993.9 DAY 9 27 14 16 15 18 17 8 4 15 6 25 MEAN QFF PRESSURE IN HPA 1017.9 1014.1 1012.1 1008.1 1003.2 995.5 990.4 994.1 1002.1 1009.2 1014.0 1017.9 1006.6 MAX. QFF PRESSURE IN HPA 1021.1 1017.3 1017.2 1013.0 1007.3 1002.8 996.5 998.4 1011.1 1015.1 1021.1 1021.4 1021.4 DAY 18 1 2 12 26 2 28 18 12 24 30 19 MIN. QFF PRESSURE IN HPA 1013.8 1009.3 1007.3 1003.5 998.4 990.8 984.9 988.3 995.2 1004.3 1007.2 1013.8 984.9 DAY 9 27 26 15 15 23 17 8 1 14 5 25 PRESSURE AT HOUR 1800 UTC. MEAN QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** PRESSURE AT HOUR 2100 UTC. MEAN QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION 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 1996 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AIR TEMPERATURE (C) 11.5 14.9 16.9 24.5 31.6 35.4 36.9 35.6 33.2 26.5 18.9 15.2 25.1 MINIMUN AIR TEMPERATURE (C) 5.2 7.7 10.7 12.9 18.2 22.2 24.9 24.9 21.4 14.4 7.1 3.0 14.4 DAYS WITH MINIMUM TEMP. >=21 0 0 0 0 4 25 31 29 19 1 0 0 109 DAYS WITH MINIMUM TEMP. <=-4 0 0 0 0 0 0 0 0 0 0 0 0 0 DAYS WITH FREEZING MIN.<= 0 1 0 0 0 0 0 0 0 0 0 0 1 2 TEMPERATURE RECORDS LOWEST(C) -0.4 2.8 6.0 7.0 13.0 18.0 21.2 19.4 17.8 8.4 3.6 0.0 -0.4 DAY 15 24 15 7 1 7 7 27 20 22 16 7 MAXIMUM AIR TEMPERATURE (C) 16.0 19.8 21.2 30.4 37.3 41.1 42.3 41.7 39.7 33.1 25.8 22.7 30.9 DAYS WITH MAXIMUM TEMP. >=30 0 0 0 16 31 30 31 31 30 28 6 0 203 DAYS WITH MAXIMUM TEMP. <= 0 0 0 0 0 0 0 0 0 0 0 0 0 0 TEMPERATURE RECORDS HIGHEST(C) 21.2 25.6 26.4 35.4 42.0 43.6 45.0 44.2 43.0 38.0 31.4 24.0 45.0 DAY 31 9 31 23 31 5 11 12 11 1 1 14 DIF. BETWEEN (MAX.-MIN.) (C) 10.8 12.1 10.5 17.5 19.1 18.9 17.4 16.8 18.3 18.7 18.7 19.7 16.5 MEAN DAILY TEMP. (MDT) (C) 10.6 13.8 15.9 21.6 27.8 31.6 33.6 33.3 30.5 23.7 16.5 12.9 22.7 COOLING DEG. DAYS(BASE 21 0C) 0.0 0.0 0.0 44.7 209.6 319.1 391.4 380.6 286.0 88.4 0.0 0.0 1719.9 HEATING DEG. DAYS(BASE 18 0C) 229.3 122.4 68.2 2.7 0.0 0.0 0.0 0.0 0.0 0.0 61.3 159.2 643.1 DEWPOINT (MEAN C) 5.7 7.8 11.1 8.9 7.8 10.2 10.1 12.8 10.8 6.3 0.8 1.2 7.8 MIXING RATIO (G/KG) 6.39 7.41 9.26 8.03 7.37 9.18 8.77 10.82 9.31 6.84 4.64 4.66 7.72 VAPOUR PRESSURE (HPA) 9.41 10.87 13.51 11.73 10.76 13.27 12.67 15.60 13.50 10.03 6.84 6.90 11.26 SATURATION DEF. (HPA) 4.71 6.68 6.32 20.92 38.02 46.68 52.19 45.12 40.10 26.78 16.84 11.61 26.33 RELATIVE HUMIDITY (MEAN %) 71 67 72 42 26 26 22 30 30 31 34 42 41 RELATIVE HUMIDITY (MAX. %) 94 93 94 74 53 52 42 55 53 54 58 67 66 RELATIVE HUMIDITY (MIN. %) 51 45 54 26 15 15 14 16 17 18 21 27 27 RELATIVE HUMIDITY (MEAN% 03UTC) 93 92 94 74 53 52 42 55 53 53 55 67 65 RELATIVE HUMIDITY (MEAN% 09UTC) 59 56 62 29 16 18 16 20 21 21 25 32 31 RELATIVE HUMIDITY (MEAN% 15UTC) 70 62 68 39 21 20 18 25 23 27 33 39 37 RH=0 => RELATIVE HUMIDITY < 0.5% AMOUNT OF PRECIPITATION MM. 93.7 65.8 133.3 0.0 0.0 31.0 9.0 15.2 5.0 0.0 1.0 0.0 354.0 DAYS WITH PRECIPITATION >=10 2 2 4 0 0 1 0 1 0 0 0 0 10 DAYS WITH PRECIPITATION >= 5 7 5 5 0 0 3 0 1 1 0 0 0 22 DAYS WITH PRECIPITATION >= 1 8 5 9 0 0 3 3 3 1 0 1 0 33 DAYS WITH PRECIPITATION 8 8 12 1 0 3 3 4 1 0 1 0 41 GREATEST DAILY PRECIPITATION 44.0 29.0 63.4 0.0 0.0 19.0 4.0 10.0 5.0 0.0 1.0 0.0 63.4 DAY 12 21 13 ** ** 13 6 25 6 ** 28 ** DAY WITH THUNDER STORM 0 1 3 0 0 3 2 5 1 0 0 0 15 DAYS WITH SNOW OR SLEET 0 0 0 0 0 0 0 0 0 0 0 0 0 DAYS WITH DUST 0 1 0 4 2 0 3 1 7 1 0 2 21 WIND DIRECTION (PREVAILING) 90 90 90 270 225 270 90 225 225 270 90 90 270 PREVAILING WIND SPEED(KNOTS) 12.2 10.4 11.5 10.7 11.1 10.5 11.6 12.5 10.9 10.0 9.7 9.3 10.7 PREVAILING WIND PERCENT 18.7 11.7 14.2 28.0 17.4 17.3 11.6 10.3 14.7 10.3 12.0 11.6 10.4 CALMS PERCENT OF WIND 73.5 71.0 69.7 58.0 54.2 51.3 50.3 52.9 64.7 61.9 73.3 78.1 63.2 NO. OF WIND OBSERVATION 155 145 155 150 155 150 155 155 150 155 150 155 1830 VECTOR WIND DIRECTION (MEAN) 76 75 101 275 246 246 64 242 243 253 74 14 252 VECTOR WIND MAGNITUDE(KNOTS) 1.7 0.4 0.5 2.7 3.7 2.4 0.8 0.6 2.1 1.0 0.6 0.4 0.7 WIND STEADINESES (MEAN %) 56.7 13.8 15.2 58.7 71.2 46.2 14.0 11.1 58.3 26.3 23.1 18.2 17.5 WIND SPEED (MEAN KNOTS) 3.0 2.9 3.3 4.6 5.2 5.2 5.7 5.4 3.6 3.8 2.6 2.2 4.0 FASTEST WIND DIRECTION 80 210 90 90 220 310 260 270 260 320 290 270 270 FASTEST WIND SPEED (KNOTS) 19 17 23 19 23 25 27 39 35 21 17 21 39 DAY 12 11 4 13 5 15 6 23 5 16 9 11 DAYS WITH SKY CLEAR (0-2)/8 19 13 11 20 20 26 25 25 30 31 22 27 269 DAYS WITH P.CLOUDY (3-6)/8 8 12 10 8 10 4 6 6 0 0 5 4 73 DAYS WITH CLOUDY (7-8)/8 4 4 10 2 1 0 0 0 0 0 3 0 24 DAYS WITH VISIBILITY =< 2 KM 8 8 8 0 0 0 0 0 3 0 1 0 28 DURATION OF SUNSHINE HOURS 222.1 215.7 201.3 298.8 335.6 354.6 335.2 321.6 315.6 322.4 266.8 289.4 3479.1 ======================================================================================================================= 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 1996 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL MEAN QFE PRESSURE IN HPA 926.1 924.0 921.9 921.1 918.7 913.9 912.2 914.0 916.5 923.1 925.9 927.8 920.4 MAX. QFE PRESSURE IN HPA 931.9 928.8 926.2 927.4 923.6 919.7 918.7 919.0 924.8 928.0 933.1 933.4 933.4 DAY-HOUR 27- 6 19- 6 2- 6 8- 6 4- 6 1- 6 3- 6 27- 6 25- 6 13- 6 16- 6 8- 6 MIN. QFE PRESSURE IN HPA 917.4 918.1 917.2 916.4 911.8 908.0 907.5 908.8 911.7 917.0 921.1 922.5 907.5 DAY-HOUR 12- 3 5-12 17-12 28-12 29-15 19-15 12-15 14-12 19-12 4-12 1-12 15-12 MEAN QNH PRESSURE IN HPA 1017.8 1015.5 1013.3 1012.4 1009.7 1004.6 1002.8 1004.7 1007.4 1014.5 1017.6 1019.6 1011.6 MAX. QNH PRESSURE IN HPA 1024.0 1020.7 1017.9 1019.2 1015.1 1010.9 1009.8 1010.1 1016.4 1019.8 1025.3 1025.6 1025.6 DAY-HOUR 27- 6 19- 6 2- 6 8- 6 4- 6 1- 6 3- 6 27- 6 25- 6 13- 6 16- 6 8- 6 MIN. QNH PRESSURE IN HPA 1008.4 1009.1 1008.2 1007.3 1002.3 998.2 997.7 999.1 1002.2 1007.9 1012.4 1013.9 997.7 DAY-HOUR 12- 3 5-12 17-12 28-12 29-15 19-15 12-15 14-12 19-12 4-12 1-12 15-12 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY-HOUR **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY-HOUR **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** PRESSURE AT HOUR 0000 UTC. MEAN QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** PRESSURE AT HOUR 0300 UTC. MEAN QFE PRESSURE IN HPA 925.9 924.0 922.0 921.5 919.5 915.0 913.2 915.0 917.4 923.9 926.3 928.2 921.0 MAX. QFE PRESSURE IN HPA 930.1 926.8 925.4 926.6 922.6 919.4 918.5 918.6 923.3 927.0 932.0 932.0 932.0 DAY 28 8 2 8 17 1 3 27 25 14 16 8 MIN. QFE PRESSURE IN HPA 917.4 919.0 918.4 919.0 915.0 910.6 910.1 910.8 914.2 919.0 923.0 925.5 910.1 DAY 12 5 17 28 29 20 12 14 19 5 2 15 MEAN QNH PRESSURE IN HPA 1017.6 1015.5 1013.3 1012.8 1010.6 1005.8 1003.8 1005.8 1008.4 1015.3 1018.0 1020.1 1012.2 MAX. QNH PRESSURE IN HPA 1022.1 1018.5 1017.0 1018.3 1014.0 1010.5 1009.6 1009.7 1014.7 1018.7 1024.1 1024.1 1024.1 DAY 28 8 2 8 17 1 3 27 25 14 16 8 MIN. QNH PRESSURE IN HPA 1008.4 1010.1 1009.5 1010.1 1005.8 1001.0 1000.5 1001.2 1004.9 1010.1 1014.4 1017.1 1000.5 DAY 12 5 17 28 29 20 12 14 19 5 2 15 MEAN QFF PRESSURE IN HPA 1017.7 1014.6 1011.5 1009.4 1005.0 998.6 996.2 998.5 1002.1 1011.5 1016.7 1020.1 1008.5 MAX. QFF PRESSURE IN HPA 1023.3 1018.2 1015.9 1015.7 1008.5 1003.8 1002.3 1004.8 1008.7 1015.8 1023.9 1025.0 1025.0 DAY 28 24 2 8 17 1 3 27 25 22 16 8 MIN. QFF PRESSURE IN HPA 1008.4 1008.1 1008.4 1006.1 998.9 994.0 992.5 993.5 998.3 1005.2 1011.9 1016.5 992.5 DAY 12 5 20 28 30 20 12 14 19 5 2 16 ======================================================================================================================= 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 1996 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 0600 UTC. MEAN QFE PRESSURE IN HPA 927.8 925.5 923.3 922.7 920.3 915.5 913.7 915.6 918.3 924.9 927.7 929.7 922.1 MAX. QFE PRESSURE IN HPA 931.9 928.8 926.2 927.4 923.6 919.7 918.7 919.0 924.8 928.0 933.1 933.4 933.4 DAY 27 19 2 8 4 1 3 27 25 13 16 8 MIN. QFE PRESSURE IN HPA 919.7 919.9 920.0 920.1 915.2 911.2 910.3 911.4 915.2 920.1 924.2 927.0 910.3 DAY 12 5 17 28 29 20 12 14 15 5 1 15 MEAN QNH PRESSURE IN HPA 1019.6 1017.2 1014.8 1014.1 1011.5 1006.3 1004.3 1006.4 1009.4 1016.5 1019.4 1021.7 1013.4 MAX. QNH PRESSURE IN HPA 1024.0 1020.7 1017.9 1019.2 1015.1 1010.9 1009.8 1010.1 1016.4 1019.8 1025.3 1025.6 1025.6 DAY 27 19 2 8 4 1 3 27 25 13 16 8 MIN. QNH PRESSURE IN HPA 1010.9 1011.1 1011.2 1011.3 1006.0 1001.7 1000.7 1001.9 1006.0 1011.3 1015.7 1018.7 1000.7 DAY 12 5 17 28 29 20 12 14 15 5 1 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 926.5 924.4 922.5 921.7 919.1 914.3 912.7 914.4 916.9 923.3 926.1 927.9 920.8 MAX. QFE PRESSURE IN HPA 930.8 928.1 925.2 926.6 922.6 918.3 917.9 917.7 923.0 926.6 931.8 931.4 931.8 DAY 27 19 1 8 4 1 3 27 25 20 15 8 MIN. QFE PRESSURE IN HPA 918.1 919.5 918.8 918.0 914.0 910.3 909.5 910.8 913.5 918.2 922.6 924.7 909.5 DAY 12 5 17 28 29 20 12 3 19 5 10 15 MEAN QNH PRESSURE IN HPA 1018.2 1015.9 1013.8 1013.0 1010.2 1005.0 1003.2 1005.1 1007.8 1014.7 1017.7 1019.7 1012.0 MAX. QNH PRESSURE IN HPA 1022.8 1019.9 1016.8 1018.3 1014.0 1009.3 1008.9 1008.7 1014.4 1018.3 1023.9 1023.5 1023.9 DAY 27 19 1 8 4 1 3 27 25 20 15 8 MIN. QNH PRESSURE IN HPA 1009.1 1010.6 1009.9 1009.0 1004.7 1000.7 999.8 1001.2 1004.2 1009.2 1014.0 1016.3 999.8 DAY 12 5 17 28 29 20 12 3 19 5 10 15 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** PRESSURE AT HOUR 1200 UTC. MEAN QFE PRESSURE IN HPA 924.9 922.8 920.8 919.8 917.3 912.5 911.0 912.3 914.9 921.6 924.5 926.3 919.1 MAX. QFE PRESSURE IN HPA 929.4 927.0 924.0 924.2 920.6 916.6 916.2 915.7 921.0 924.6 930.0 930.2 930.2 DAY 28 18 22 8 17 1 3 27 25 13 15 8 MIN. QFE PRESSURE IN HPA 917.7 918.1 917.2 916.4 912.0 909.0 907.8 908.8 911.7 917.0 921.1 922.5 907.8 DAY 12 5 17 28 29 19 12 14 19 4 1 15 MEAN QNH PRESSURE IN HPA 1016.5 1014.1 1012.1 1011.0 1008.3 1003.1 1001.5 1002.9 1005.7 1012.9 1016.1 1018.0 1010.2 MAX. QNH PRESSURE IN HPA 1021.3 1018.7 1015.5 1015.7 1011.8 1007.5 1007.1 1006.5 1012.3 1016.1 1022.0 1022.2 1022.2 DAY 28 18 22 8 17 1 3 27 25 13 15 8 MIN. QNH PRESSURE IN HPA 1008.7 1009.1 1008.2 1007.3 1002.5 999.3 998.0 999.1 1002.2 1007.9 1012.4 1013.9 998.0 DAY 12 5 17 28 29 19 12 14 19 4 1 15 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION 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 1996 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 1500 UTC. MEAN QFE PRESSURE IN HPA 925.4 923.3 921.2 919.9 917.2 912.4 910.6 912.6 915.0 922.0 925.0 926.9 919.3 MAX. QFE PRESSURE IN HPA 929.9 927.2 924.0 924.0 920.2 916.4 915.1 918.6 921.4 925.0 931.0 930.8 931.0 DAY 28 18 1 7 17 1 3 26 25 13 15 7 MIN. QFE PRESSURE IN HPA 919.4 919.1 917.2 916.8 911.8 908.0 907.5 909.0 912.1 917.0 921.6 923.1 907.5 DAY 12 22 17 4 29 19 12 14 18 4 1 15 MEAN QNH PRESSURE IN HPA 1017.1 1014.7 1012.5 1011.1 1008.1 1002.9 1001.1 1003.2 1005.8 1013.3 1016.6 1018.6 1010.4 MAX. QNH PRESSURE IN HPA 1021.9 1019.0 1015.5 1015.5 1011.4 1007.3 1005.9 1009.7 1012.7 1016.6 1023.1 1022.8 1023.1 DAY 28 18 1 7 17 1 3 26 25 13 15 7 MIN. QNH PRESSURE IN HPA 1010.5 1010.2 1008.2 1007.7 1002.3 998.2 997.7 999.3 1002.6 1007.9 1012.9 1014.5 997.7 DAY 12 22 17 4 29 19 12 14 18 4 1 15 MEAN QFF PRESSURE IN HPA 1017.1 1013.7 1010.6 1007.5 1002.5 995.9 993.4 996.0 999.5 1009.4 1015.3 1018.5 1006.6 MAX. QFF PRESSURE IN HPA 1022.9 1017.8 1013.9 1013.4 1006.1 1000.6 998.3 1004.1 1007.0 1014.4 1022.6 1023.5 1023.5 DAY 28 18 2 7 4 1 3 26 25 21 15 7 MIN. QFF PRESSURE IN HPA 1010.4 1009.1 1007.4 1003.7 995.4 991.1 989.8 991.5 995.9 1003.2 1010.4 1013.6 989.8 DAY 12 5 17 28 29 19 12 14 18 5 1 15 PRESSURE AT HOUR 1800 UTC. MEAN QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** PRESSURE AT HOUR 2100 UTC. MEAN QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION 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 1997 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AIR TEMPERATURE (C) 13.0 15.9 16.4 22.6 30.5 35.3 37.6 36.2 33.1 27.2 18.7 14.2 25.1 MINIMUN AIR TEMPERATURE (C) 3.7 6.5 8.9 12.8 18.3 23.2 27.5 25.4 20.5 17.0 10.4 6.1 15.0 DAYS WITH MINIMUM TEMP. >=21 0 0 0 0 6 25 31 30 12 2 0 0 106 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) 0.2 0.8 3.2 9.0 13.2 20.0 23.6 20.0 17.4 8.8 5.2 2.6 0.2 DAY 5 8 2 13 7 7 3 8 16 28 26 16 MAXIMUM AIR TEMPERATURE (C) 19.0 22.0 21.2 28.0 35.9 40.9 43.5 42.5 39.8 33.5 24.0 19.8 30.8 DAYS WITH MAXIMUM TEMP. >=30 0 0 0 6 31 30 31 31 30 23 0 0 182 DAYS WITH MAXIMUM TEMP. <= 0 0 0 0 0 0 0 0 0 0 0 0 0 0 TEMPERATURE RECORDS HIGHEST(C) 23.4 28.4 25.4 32.0 41.0 44.8 46.6 45.8 42.6 38.8 28.8 23.0 46.6 DAY 14 22 5 28 31 16 20 1 5 1 11 8 DIF. BETWEEN (MAX.-MIN.) (C) 15.3 15.5 12.3 15.2 17.6 17.7 16.0 17.1 19.3 16.5 13.6 13.7 15.8 MEAN DAILY TEMP. (MDT) (C) 11.4 14.2 15.1 20.4 27.1 32.0 35.5 34.0 30.1 25.2 17.2 13.0 22.9 COOLING DEG. DAYS(BASE 21 0C) 0.0 0.4 0.0 13.9 189.0 330.2 449.0 402.3 273.9 136.0 1.3 0.0 1796.1 HEATING DEG. DAYS(BASE 18 0C) 205.3 114.1 91.4 3.4 0.0 0.0 0.0 0.0 0.0 0.0 47.1 156.4 617.6 DEWPOINT (MEAN C) 3.5 2.2 7.2 9.0 8.2 12.2 16.3 16.1 9.6 9.2 8.7 6.4 9.1 MIXING RATIO (G/KG) 5.44 5.04 7.22 8.12 7.58 10.05 13.57 13.25 8.43 8.20 7.87 6.66 8.45 VAPOUR PRESSURE (HPA) 8.01 7.44 10.57 11.87 11.07 14.52 19.39 19.01 12.27 12.02 11.56 9.80 12.29 SATURATION DEF. (HPA) 7.90 11.85 8.76 16.83 34.94 45.37 47.65 43.63 41.21 26.38 10.94 6.93 25.20 RELATIVE HUMIDITY (MEAN %) 56 44 60 46 28 27 32 34 26 37 55 63 42 RELATIVE HUMIDITY (MAX. %) 81 75 86 77 52 47 51 58 44 58 78 89 66 RELATIVE HUMIDITY (MIN. %) 39 27 42 30 17 18 21 21 16 23 40 42 28 RELATIVE HUMIDITY (MEAN% 03UTC) 79 74 82 76 52 47 51 57 44 57 78 87 65 RELATIVE HUMIDITY (MEAN% 09UTC) 46 31 48 35 20 20 26 25 19 28 44 52 33 RELATIVE HUMIDITY (MEAN% 15UTC) 53 36 56 40 22 23 27 29 22 32 50 60 38 RH=0 => RELATIVE HUMIDITY < 0.5% AMOUNT OF PRECIPITATION MM. 62.1 3.0 130.0 26.7 0.0 9.0 0.8 12.0 0.0 3.4 4.5 14.4 265.9 DAYS WITH PRECIPITATION >=10 3 0 4 1 0 0 0 1 0 0 0 0 9 DAYS WITH PRECIPITATION >= 5 3 0 7 2 0 1 0 1 0 0 0 1 15 DAYS WITH PRECIPITATION >= 1 5 1 10 3 0 2 0 1 0 1 1 4 28 DAYS WITH PRECIPITATION 6 1 14 3 0 2 2 2 0 3 7 8 48 GREATEST DAILY PRECIPITATION 28.0 3.0 44.0 17.7 0.0 5.0 0.4 12.0 0.0 3.0 4.0 7.0 44.0 DAY 26 12 11 24 ** 23 14 8 ** 19 28 21 DAY WITH THUNDER STORM 0 0 0 0 0 2 4 2 0 3 0 0 11 DAYS WITH SNOW OR SLEET 0 0 0 0 0 0 0 0 0 0 0 0 0 DAYS WITH DUST 3 6 1 6 12 11 11 8 3 2 2 0 65 WIND DIRECTION (PREVAILING) 90 270 270 270 270 225 225 225 270 270 90 315 270 PREVAILING WIND SPEED(KNOTS) 11.7 11.8 11.4 11.2 12.2 10.8 11.4 13.3 10.1 9.0 8.8 9.3 11.0 PREVAILING WIND PERCENT 12.3 20.7 16.1 24.7 28.4 16.7 18.7 16.1 22.7 16.1 12.0 3.9 16.1 CALMS PERCENT OF WIND 74.2 57.9 54.8 49.3 43.9 43.3 32.9 45.8 52.0 58.7 60.7 84.5 54.8 NO. OF WIND OBSERVATION 155 140 155 150 155 150 155 155 150 155 150 155 1825 VECTOR WIND DIRECTION (MEAN) 76 270 278 256 273 243 243 244 255 268 71 311 261 VECTOR WIND MAGNITUDE(KNOTS) 0.5 3.5 1.6 3.2 4.6 2.3 2.1 2.3 3.2 2.2 0.5 0.3 2.0 WIND STEADINESES (MEAN %) 17.2 67.3 32.0 54.2 66.7 34.3 27.6 36.5 62.7 56.4 19.2 23.1 40.8 WIND SPEED (MEAN KNOTS) 2.9 5.2 5.0 5.9 6.9 6.7 7.6 6.3 5.1 3.9 2.6 1.3 4.9 FASTEST WIND DIRECTION 210 320 280 90 210 90 320 320 90 290 330 230 90 FASTEST WIND SPEED (KNOTS) 19 23 23 23 25 33 29 31 19 23 31 17 33 DAY 16 9 26 24 31 21 27 17 16 18 11 14 DAYS WITH SKY CLEAR (0-2)/8 21 22 9 16 24 23 22 26 30 19 12 12 236 DAYS WITH P.CLOUDY (3-6)/8 5 4 11 10 7 7 9 4 0 8 10 16 91 DAYS WITH CLOUDY (7-8)/8 5 2 11 4 0 0 0 1 0 4 8 3 38 DAYS WITH VISIBILITY =< 2 KM 3 0 5 0 0 0 0 2 0 0 3 5 18 DURATION OF SUNSHINE HOURS 248.6 259.7 219.0 280.5 357.2 339.1 335.6 329.4 323.9 283.2 207.4 220.7 3404.3 ======================================================================================================================= 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 1997 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL MEAN QFE PRESSURE IN HPA 925.5 925.0 922.5 921.5 919.3 914.0 910.0 913.0 918.6 924.0 925.6 926.5 920.5 MAX. QFE PRESSURE IN HPA 931.0 929.0 931.0 926.2 924.2 920.7 914.2 918.8 925.1 928.2 930.6 932.8 932.8 DAY-HOUR 7- 6 8- 6 11- 6 14- 6 1- 6 4- 6 22- 6 31- 6 19- 6 31- 6 4- 6 29- 6 MIN. QFE PRESSURE IN HPA 913.6 921.7 915.3 918.0 913.5 905.1 904.4 907.6 913.8 919.2 920.4 920.6 904.4 DAY-HOUR 17-12 26-15 25-12 3-12 30-15 29-15 11-12 4-15 2-12 1-12 24-12 11-12 MEAN QNH PRESSURE IN HPA 1017.2 1016.6 1013.9 1012.8 1010.5 1004.7 1000.3 1003.6 1009.7 1015.5 1017.2 1018.1 1011.7 MAX. QNH PRESSURE IN HPA 1023.1 1020.9 1023.1 1017.9 1015.7 1011.9 1004.9 1009.9 1016.7 1020.0 1022.6 1025.0 1025.0 DAY-HOUR 7- 6 8- 6 11- 6 14- 6 1- 6 4- 6 22- 6 31- 6 19- 6 31- 6 4- 6 29- 6 MIN. QNH PRESSURE IN HPA 1004.3 1013.0 1006.1 1009.0 1004.2 995.1 994.3 997.8 1004.5 1010.3 1011.6 1011.8 994.3 DAY-HOUR 17-12 26-15 25-12 3-12 30-15 29-15 11-12 4-15 2-12 1-12 24-12 11-12 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY-HOUR **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY-HOUR **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** PRESSURE AT HOUR 0000 UTC. MEAN QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** PRESSURE AT HOUR 0300 UTC. MEAN QFE PRESSURE IN HPA 925.8 924.9 922.7 921.8 920.1 914.9 911.1 913.9 919.4 924.8 925.9 926.6 921.0 MAX. QFE PRESSURE IN HPA 930.0 926.6 929.8 925.0 923.5 919.9 914.0 917.6 924.2 927.5 929.4 931.3 931.3 DAY 11 7 12 15 12 5 22 31 19 13 8 30 MIN. QFE PRESSURE IN HPA 918.5 922.5 917.6 920.0 916.3 908.4 907.5 909.5 916.6 921.0 921.9 921.9 907.5 DAY 17 27 25 29 31 29 11 1 2 1 24 11 MEAN QNH PRESSURE IN HPA 1017.5 1016.4 1014.1 1013.1 1011.3 1005.7 1001.5 1004.6 1010.6 1016.4 1017.5 1018.3 1012.3 MAX. QNH PRESSURE IN HPA 1022.0 1018.3 1021.8 1016.6 1015.0 1011.1 1004.7 1008.6 1015.7 1019.3 1021.3 1023.4 1023.4 DAY 11 7 12 15 12 5 22 31 19 13 8 30 MIN. QNH PRESSURE IN HPA 1009.6 1013.9 1008.6 1011.2 1007.2 998.7 997.7 999.8 1007.5 1012.3 1013.2 1013.2 997.7 DAY 17 27 25 29 31 29 11 1 2 1 24 11 MEAN QFF PRESSURE IN HPA 1017.5 1015.5 1012.6 1009.9 1005.8 998.5 993.3 996.9 1004.5 1011.9 1015.5 1017.8 1008.3 MAX. QFF PRESSURE IN HPA 1022.3 1019.0 1020.7 1014.5 1010.0 1004.8 996.4 1001.4 1010.3 1015.8 1019.8 1023.3 1023.3 DAY 8 8 12 12 13 5 22 31 19 28 30 30 MIN. QFF PRESSURE IN HPA 1008.7 1010.7 1005.8 1006.6 1000.4 990.5 989.1 991.8 1000.6 1006.9 1011.7 1013.0 989.1 DAY 17 23 25 29 31 29 16 1 5 1 24 10 ======================================================================================================================= 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 1997 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 0600 UTC. MEAN QFE PRESSURE IN HPA 927.4 926.8 924.2 923.0 920.9 915.5 911.5 914.6 920.5 926.0 927.3 928.2 922.2 MAX. QFE PRESSURE IN HPA 931.0 929.0 931.0 926.2 924.2 920.7 914.2 918.8 925.1 928.2 930.6 932.8 932.8 DAY 7 8 11 14 1 4 22 31 19 31 4 29 MIN. QFE PRESSURE IN HPA 919.0 923.6 918.1 921.0 917.4 909.0 907.8 910.1 917.2 922.4 923.3 923.2 907.8 DAY 17 27 25 2 31 29 11 1 2 1 24 11 MEAN QNH PRESSURE IN HPA 1019.1 1018.5 1015.7 1014.4 1012.2 1006.4 1002.0 1005.4 1011.7 1017.6 1019.1 1020.0 1013.5 MAX. QNH PRESSURE IN HPA 1023.1 1020.9 1023.1 1017.9 1015.7 1011.9 1004.9 1009.9 1016.7 1020.0 1022.6 1025.0 1025.0 DAY 7 8 11 14 1 4 22 31 19 31 4 29 MIN. QNH PRESSURE IN HPA 1010.1 1015.1 1009.1 1012.3 1008.4 999.3 998.0 1000.5 1008.2 1013.8 1014.7 1014.6 998.0 DAY 17 27 25 2 31 29 11 1 2 1 24 11 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 925.7 925.6 923.1 922.0 919.9 914.5 910.4 913.5 919.2 924.1 925.7 926.5 920.8 MAX. QFE PRESSURE IN HPA 930.0 927.5 931.0 925.2 923.1 919.9 912.9 917.6 923.5 926.2 929.5 931.2 931.2 DAY 8 7 11 14 8 4 22 31 18 31 4 29 MIN. QFE PRESSURE IN HPA 914.2 923.1 917.6 919.8 916.0 907.8 906.5 909.7 915.7 920.9 921.9 921.6 906.5 DAY 17 23 25 3 30 30 11 4 2 1 24 11 MEAN QNH PRESSURE IN HPA 1017.3 1017.2 1014.5 1013.4 1011.0 1005.2 1000.8 1004.1 1010.3 1015.6 1017.3 1018.2 1012.1 MAX. QNH PRESSURE IN HPA 1022.0 1019.3 1023.1 1016.8 1014.5 1011.1 1003.5 1008.6 1015.0 1017.9 1021.4 1023.3 1023.3 DAY 8 7 11 14 8 4 22 31 18 31 4 29 MIN. QNH PRESSURE IN HPA 1004.9 1014.5 1008.6 1011.0 1006.9 998.0 996.6 1000.1 1006.5 1012.1 1013.2 1012.9 996.6 DAY 17 23 25 3 30 30 11 4 2 1 24 11 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** PRESSURE AT HOUR 1200 UTC. MEAN QFE PRESSURE IN HPA 924.1 923.7 921.2 920.2 917.9 912.6 908.5 911.4 917.0 922.3 924.2 925.1 919.0 MAX. QFE PRESSURE IN HPA 928.2 925.6 929.7 923.8 921.4 917.7 911.2 915.5 921.8 924.8 928.9 930.8 930.8 DAY 8 21 11 23 12 4 21 31 18 27 4 29 MIN. QFE PRESSURE IN HPA 913.6 921.8 915.3 918.0 913.8 905.9 904.4 908.2 913.8 919.2 920.4 920.6 904.4 DAY 17 9 25 3 30 29 11 1 2 1 24 11 MEAN QNH PRESSURE IN HPA 1015.6 1015.1 1012.5 1011.4 1008.9 1003.2 998.7 1001.9 1008.0 1013.7 1015.7 1016.7 1010.1 MAX. QNH PRESSURE IN HPA 1020.0 1017.2 1021.6 1015.3 1012.7 1008.7 1001.7 1006.3 1013.1 1016.4 1020.8 1022.8 1022.8 DAY 8 21 11 23 12 4 21 31 18 27 4 29 MIN. QNH PRESSURE IN HPA 1004.3 1013.1 1006.1 1009.0 1004.5 996.0 994.3 998.4 1004.5 1010.3 1011.6 1011.8 994.3 DAY 17 9 25 3 30 29 11 1 2 1 24 11 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION 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 1997 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 1500 UTC. MEAN QFE PRESSURE IN HPA 924.8 924.1 921.5 920.3 917.9 912.4 908.5 911.5 917.1 922.8 924.8 925.9 919.3 MAX. QFE PRESSURE IN HPA 928.5 926.0 930.0 923.6 921.8 917.4 911.0 915.5 921.8 926.1 930.1 931.7 931.7 DAY 10 21 11 23 8 7 21 31 18 31 4 29 MIN. QFE PRESSURE IN HPA 916.2 921.7 915.3 918.1 913.5 905.1 904.9 907.6 914.0 919.4 921.4 922.2 904.9 DAY 17 26 25 27 30 29 11 4 2 1 24 11 MEAN QNH PRESSURE IN HPA 1016.4 1015.6 1012.7 1011.5 1008.9 1002.9 998.8 1002.0 1008.1 1014.2 1016.3 1017.6 1010.4 MAX. QNH PRESSURE IN HPA 1020.4 1017.7 1022.0 1015.1 1013.1 1008.4 1001.5 1006.3 1013.1 1017.8 1022.1 1023.8 1023.8 DAY 10 21 11 23 8 7 21 31 18 31 4 29 MIN. QNH PRESSURE IN HPA 1007.1 1013.0 1006.1 1009.1 1004.2 995.1 994.9 997.8 1004.7 1010.5 1012.7 1013.6 994.9 DAY 17 26 25 27 30 29 11 4 2 1 24 11 MEAN QFF PRESSURE IN HPA 1016.4 1014.7 1011.2 1008.3 1003.4 995.7 990.5 994.3 1001.9 1009.7 1014.3 1017.0 1006.5 MAX. QFF PRESSURE IN HPA 1020.7 1017.7 1020.4 1013.1 1008.4 1001.8 993.6 999.2 1007.4 1014.3 1019.7 1022.9 1022.9 DAY 10 6 11 12 8 7 27 31 18 31 4 29 MIN. QFF PRESSURE IN HPA 1006.0 1010.1 1003.7 1004.8 997.4 987.1 986.3 989.6 997.7 1005.2 1011.0 1013.0 986.3 DAY 17 23 25 28 30 29 11 2 5 1 24 11 PRESSURE AT HOUR 1800 UTC. MEAN QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** PRESSURE AT HOUR 2100 UTC. MEAN QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION 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 1998 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AIR TEMPERATURE (C) 11.8 14.7 19.2 26.7 33.0 36.6 37.7 36.6 33.5 28.0 21.6 18.4 26.5 MINIMUN AIR TEMPERATURE (C) 5.1 6.4 11.2 15.1 20.0 23.3 26.9 26.3 22.4 15.8 9.2 6.0 15.6 DAYS WITH MINIMUM TEMP. >=21 0 0 0 1 14 29 30 31 22 1 0 0 128 DAYS WITH MINIMUM TEMP. <=-4 0 0 0 0 0 0 0 0 0 0 0 0 0 DAYS WITH FREEZING MIN.<= 0 2 0 0 0 0 0 0 0 0 0 0 0 2 TEMPERATURE RECORDS LOWEST(C) -1.6 2.0 4.8 9.8 14.4 20.8 20.6 23.0 18.0 12.2 5.0 0.4 -1.6 DAY 15 14 4 7 3 14 19 14 21 31 29 10 MAXIMUM AIR TEMPERATURE (C) 16.7 20.3 24.2 32.4 38.5 42.2 43.5 42.4 39.7 34.5 28.9 26.4 32.5 DAYS WITH MAXIMUM TEMP. >=30 0 0 4 25 31 30 31 31 30 31 5 1 219 DAYS WITH MAXIMUM TEMP. <= 0 0 0 0 0 0 0 0 0 0 0 0 0 0 TEMPERATURE RECORDS HIGHEST(C) 20.0 25.6 34.2 36.0 43.2 45.0 47.0 45.0 41.8 39.4 31.0 30.6 47.0 DAY 21 7 29 22 28 30 11 20 2 1 4 13 DIF. BETWEEN (MAX.-MIN.) (C) 11.6 13.9 13.0 17.3 18.5 18.9 16.6 16.1 17.3 18.7 19.7 20.4 16.9 MEAN DAILY TEMP. (MDT) (C) 10.9 13.3 17.7 23.8 29.2 32.8 35.2 34.4 31.0 25.2 19.1 16.2 24.1 COOLING DEG. DAYS(BASE 21 0C) 0.0 0.0 13.9 89.6 255.0 353.4 440.5 414.5 301.2 129.9 0.8 0.0 1998.8 HEATING DEG. DAYS(BASE 18 0C) 219.8 131.3 51.4 0.0 0.0 0.0 0.0 0.0 0.0 0.0 4.7 58.8 466.0 DEWPOINT (MEAN C) 5.7 5.9 9.1 9.1 12.5 12.7 17.1 15.8 14.3 8.3 2.7 1.0 9.5 MIXING RATIO (G/KG) 6.47 6.53 8.16 8.34 10.35 10.34 14.04 12.81 11.65 7.62 5.15 4.64 8.84 VAPOUR PRESSURE (HPA) 9.52 9.60 11.95 12.17 15.02 14.95 20.07 18.42 16.83 11.15 7.60 6.86 12.84 SATURATION DEF. (HPA) 4.81 8.05 11.69 24.72 37.88 49.00 47.62 45.39 37.36 29.18 20.07 15.93 27.64 RELATIVE HUMIDITY (MEAN %) 70 59 57 36 31 26 32 32 34 31 31 34 39 RELATIVE HUMIDITY (MAX. %) 93 88 85 61 50 40 51 52 55 50 50 50 60 RELATIVE HUMIDITY (MIN. %) 50 38 37 24 22 17 22 20 22 21 20 21 26 RELATIVE HUMIDITY (MEAN% 03UTC) 92 87 85 59 50 40 51 52 55 50 50 50 60 RELATIVE HUMIDITY (MEAN% 09UTC) 58 47 45 28 25 21 26 24 26 23 24 26 31 RELATIVE HUMIDITY (MEAN% 15UTC) 66 53 51 31 27 22 28 28 27 26 26 31 35 RH=0 => RELATIVE HUMIDITY < 0.5% AMOUNT OF PRECIPITATION MM. 94.8 48.0 33.6 0.4 0.0 0.0 20.0 1.3 0.0 0.0 0.0 0.0 198.1 DAYS WITH PRECIPITATION >=10 4 2 1 0 0 0 1 0 0 0 0 0 8 DAYS WITH PRECIPITATION >= 5 6 2 2 0 0 0 1 0 0 0 0 0 11 DAYS WITH PRECIPITATION >= 1 8 3 4 0 0 0 2 1 0 0 0 0 18 DAYS WITH PRECIPITATION 10 3 8 1 0 0 2 2 0 0 0 0 26 GREATEST DAILY PRECIPITATION 26.0 28.0 20.0 0.4 0.0 0.0 17.0 1.0 0.0 0.0 0.0 0.0 28.0 DAY 2 13 19 23 ** ** 19 28 ** ** ** ** DAY WITH THUNDER STORM 4 1 1 0 0 0 3 3 2 0 0 0 14 DAYS WITH SNOW OR SLEET 0 0 0 0 0 0 0 0 0 0 0 0 0 DAYS WITH DUST 0 0 2 6 4 0 6 4 7 3 0 0 32 WIND DIRECTION (PREVAILING) 270 90 270 270 270 315 225 90 270 270 270 90 270 PREVAILING WIND SPEED(KNOTS) 7.8 10.9 10.1 12.6 11.8 12.9 9.3 9.2 10.3 9.4 9.3 8.3 10.3 PREVAILING WIND PERCENT 15.5 9.3 12.3 15.3 16.1 11.3 7.1 11.0 13.3 7.1 6.0 5.2 9.6 CALMS PERCENT OF WIND 52.9 64.3 68.4 56.7 57.4 54.7 67.7 56.1 61.3 74.8 81.3 86.5 65.2 NO. OF WIND OBSERVATION 155 140 155 150 155 150 155 155 150 155 150 155 1825 VECTOR WIND DIRECTION (MEAN) 300 318 291 279 289 283 199 124 276 253 274 353 280 VECTOR WIND MAGNITUDE(KNOTS) 0.5 0.6 1.2 3.2 4.3 1.1 0.8 0.8 2.0 1.0 0.4 0.2 1.1 WIND STEADINESES (MEAN %) 16.1 15.8 34.3 62.7 79.6 21.2 25.0 17.4 50.0 40.0 22.2 18.2 30.6 WIND SPEED (MEAN KNOTS) 3.1 3.8 3.5 5.1 5.4 5.2 3.2 4.6 4.0 2.5 1.8 1.1 3.6 FASTEST WIND DIRECTION 320 90 310 210 280 270 120 60 240 240 90 110 120 FASTEST WIND SPEED (KNOTS) 27 16 23 19 27 21 45 23 19 19 14 14 45 DAY 13 8 31 21 30 2 18 8 2 4 7 6 DAYS WITH SKY CLEAR (0-2)/8 11 20 14 17 24 28 24 24 28 31 29 25 275 DAYS WITH P.CLOUDY (3-6)/8 14 6 9 9 7 2 7 7 2 0 1 5 69 DAYS WITH CLOUDY (7-8)/8 6 2 8 4 0 0 0 0 0 0 0 1 21 DAYS WITH VISIBILITY =< 2 KM 7 1 3 0 0 0 1 0 0 0 0 0 12 DURATION OF SUNSHINE HOURS 202.0 249.4 234.0 296.8 361.3 352.7 332.2 326.0 310.8 323.7 295.6 270.2 3554.7 ======================================================================================================================= 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 1998 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL MEAN QFE PRESSURE IN HPA 925.6 924.8 923.6 921.3 919.1 914.2 910.8 913.8 917.4 922.2 925.7 927.4 920.5 MAX. QFE PRESSURE IN HPA 932.8 931.0 929.7 928.8 925.2 920.6 916.6 918.6 922.5 929.0 930.3 933.0 933.0 DAY-HOUR 4- 6 4- 6 26- 6 12- 6 8- 6 5- 6 22- 6 24- 6 26- 6 25- 6 21- 6 10- 6 MIN. QFE PRESSURE IN HPA 917.6 917.5 917.0 916.2 912.8 907.0 905.0 909.2 912.3 916.4 921.3 922.0 905.0 DAY-HOUR 13- 3 12-12 1-12 21-15 30-12 30-15 8-15 13-12 3-12 1-12 17-12 21-12 MEAN QNH PRESSURE IN HPA 1017.2 1016.4 1015.1 1012.6 1010.2 1004.9 1001.2 1004.5 1008.4 1013.5 1017.4 1019.1 1011.7 MAX. QNH PRESSURE IN HPA 1025.0 1023.1 1021.6 1020.7 1016.8 1011.8 1007.5 1009.7 1013.9 1020.9 1022.3 1025.2 1025.2 DAY-HOUR 4- 6 4- 6 26- 6 12- 6 8- 6 5- 6 22- 6 24- 6 26- 6 25- 6 21- 6 10- 6 MIN. QNH PRESSURE IN HPA 1008.6 1008.5 1007.9 1007.1 1003.4 997.1 995.0 999.5 1002.9 1007.3 1012.6 1013.3 995.0 DAY-HOUR 13- 3 12-12 1-12 21-15 30-12 30-15 8-15 13-12 3-12 1-12 17-12 21-12 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY-HOUR **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY-HOUR **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** PRESSURE AT HOUR 0000 UTC. MEAN QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** PRESSURE AT HOUR 0300 UTC. MEAN QFE PRESSURE IN HPA 925.6 925.0 923.8 921.7 919.9 915.3 911.8 914.9 918.4 922.9 926.3 927.8 921.1 MAX. QFE PRESSURE IN HPA 930.8 929.8 926.2 927.6 924.2 919.6 915.7 917.9 921.8 927.6 929.2 931.6 931.6 DAY 4 4 22 12 8 5 22 29 26 25 21 10 MIN. QFE PRESSURE IN HPA 917.6 919.7 919.0 917.6 915.1 909.7 907.3 911.8 915.5 918.8 923.6 924.0 907.3 DAY 13 13 15 24 31 30 8 14 3 1 17 21 MEAN QNH PRESSURE IN HPA 1017.2 1016.6 1015.2 1013.0 1011.0 1006.1 1002.4 1005.7 1009.5 1014.3 1018.0 1019.6 1012.4 MAX. QNH PRESSURE IN HPA 1022.8 1021.8 1017.9 1019.4 1015.7 1010.7 1006.5 1008.9 1013.1 1019.4 1021.1 1023.7 1023.7 DAY 4 4 22 12 8 5 22 29 26 25 21 10 MIN. QNH PRESSURE IN HPA 1008.6 1010.9 1010.1 1008.6 1005.9 1000.1 997.5 1002.3 1006.3 1009.9 1015.1 1015.5 997.5 DAY 13 13 15 24 31 30 8 14 3 1 17 21 MEAN QFF PRESSURE IN HPA 1017.2 1015.9 1013.0 1008.7 1004.8 998.6 994.3 997.9 1002.9 1009.9 1015.8 1018.5 1008.1 MAX. QFF PRESSURE IN HPA 1021.8 1021.1 1016.3 1016.9 1010.0 1003.0 999.3 1002.8 1007.1 1015.7 1019.3 1023.8 1023.8 DAY 15 4 12 12 8 5 19 29 26 25 21 10 MIN. QFF PRESSURE IN HPA 1007.6 1009.4 1007.2 1002.5 998.2 992.0 988.9 994.6 999.0 1003.2 1012.5 1013.9 988.9 DAY 13 12 30 23 30 30 8 13 3 1 17 19 ======================================================================================================================= 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 1998 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 0600 UTC. MEAN QFE PRESSURE IN HPA 927.2 926.6 925.2 922.9 920.8 915.7 912.3 915.6 919.2 924.0 927.6 929.3 922.2 MAX. QFE PRESSURE IN HPA 932.8 931.0 929.7 928.8 925.2 920.6 916.6 918.6 922.5 929.0 930.3 933.0 933.0 DAY 4 4 26 12 8 5 22 24 26 25 21 10 MIN. QFE PRESSURE IN HPA 919.3 920.6 920.1 919.0 915.2 910.2 907.5 912.2 915.9 919.8 925.0 925.1 907.5 DAY 13 13 15 24 30 30 8 13 3 1 17 21 MEAN QNH PRESSURE IN HPA 1019.0 1018.3 1016.8 1014.4 1012.0 1006.6 1002.9 1006.4 1010.3 1015.5 1019.4 1021.2 1013.6 MAX. QNH PRESSURE IN HPA 1025.0 1023.1 1021.6 1020.7 1016.8 1011.8 1007.5 1009.7 1013.9 1020.9 1022.3 1025.2 1025.2 DAY 4 4 26 12 8 5 22 24 26 25 21 10 MIN. QNH PRESSURE IN HPA 1010.4 1011.8 1011.3 1010.1 1006.0 1000.6 997.7 1002.8 1006.8 1011.0 1016.6 1016.7 997.7 DAY 13 13 15 24 30 30 8 13 3 1 17 21 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** PRESSURE AT HOUR 0900 UTC. MEAN QFE PRESSURE IN HPA 925.9 925.3 924.2 921.9 919.6 914.7 911.3 914.2 917.8 922.4 925.9 927.6 920.9 MAX. QFE PRESSURE IN HPA 931.1 929.8 928.1 927.8 924.0 919.8 915.2 916.8 921.0 927.2 928.8 931.0 931.1 DAY 4 4 26 12 7 5 22 24 25 25 21 10 MIN. QFE PRESSURE IN HPA 920.1 918.9 919.3 918.0 913.8 909.0 907.0 911.2 914.4 918.0 923.3 923.1 907.0 DAY 13 12 15 21 30 30 8 13 3 1 17 21 MEAN QNH PRESSURE IN HPA 1017.5 1016.9 1015.7 1013.2 1010.8 1005.4 1001.7 1004.9 1008.8 1013.7 1017.6 1019.3 1012.1 MAX. QNH PRESSURE IN HPA 1023.2 1021.8 1019.9 1019.6 1015.5 1011.0 1006.0 1007.7 1012.3 1019.0 1020.7 1023.1 1023.2 DAY 4 4 26 12 7 5 22 24 25 25 21 10 MIN. QNH PRESSURE IN HPA 1011.3 1010.0 1010.4 1009.0 1004.5 999.3 997.1 1001.7 1005.1 1009.0 1014.7 1014.5 997.1 DAY 13 12 15 21 30 30 8 13 3 1 17 21 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** PRESSURE AT HOUR 1200 UTC. MEAN QFE PRESSURE IN HPA 924.4 923.4 922.3 920.0 917.9 913.0 909.4 912.2 915.8 920.6 924.2 925.9 919.1 MAX. QFE PRESSURE IN HPA 929.4 927.9 926.2 925.4 922.0 917.8 913.6 916.2 919.0 925.8 927.0 929.8 929.8 DAY 4 4 27 12 7 5 22 28 25 25 21 10 MIN. QFE PRESSURE IN HPA 919.4 917.5 917.0 916.4 912.8 907.5 905.3 909.2 912.3 916.4 921.3 922.0 905.3 DAY 13 12 1 21 30 30 8 13 3 1 17 21 MEAN QNH PRESSURE IN HPA 1015.9 1014.9 1013.6 1011.2 1008.9 1003.6 999.7 1002.8 1006.7 1011.8 1015.7 1017.5 1010.2 MAX. QNH PRESSURE IN HPA 1021.3 1019.7 1017.9 1017.0 1013.3 1008.8 1004.3 1007.1 1010.1 1017.4 1018.7 1021.8 1021.8 DAY 4 4 27 12 7 5 22 28 25 25 21 10 MIN. QNH PRESSURE IN HPA 1010.5 1008.5 1007.9 1007.3 1003.4 997.7 995.3 999.5 1002.9 1007.3 1012.6 1013.3 995.3 DAY 13 12 1 21 30 30 8 13 3 1 17 21 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION 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 1998 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 1500 UTC. MEAN QFE PRESSURE IN HPA 924.9 923.9 922.9 919.9 917.5 912.6 909.3 912.2 915.9 920.9 924.6 926.4 919.3 MAX. QFE PRESSURE IN HPA 931.0 928.5 926.2 924.9 921.8 917.4 913.6 916.4 918.9 926.0 927.6 930.0 931.0 DAY 4 3 26 2 7 16 29 28 25 25 30 10 MIN. QFE PRESSURE IN HPA 920.4 920.0 917.5 916.2 914.0 907.0 905.0 909.4 912.9 916.8 922.0 922.7 905.0 DAY 13 15 15 21 29 30 8 12 3 3 17 21 MEAN QNH PRESSURE IN HPA 1016.5 1015.4 1014.3 1011.1 1008.5 1003.2 999.6 1002.8 1006.8 1012.1 1016.2 1018.1 1010.4 MAX. QNH PRESSURE IN HPA 1023.1 1020.4 1017.9 1016.5 1013.1 1008.4 1004.3 1007.3 1010.0 1017.7 1019.4 1022.0 1023.1 DAY 4 3 26 2 7 16 29 28 25 25 30 10 MIN. QNH PRESSURE IN HPA 1011.6 1011.2 1008.5 1007.1 1004.7 997.1 995.0 999.7 1003.5 1007.7 1013.3 1014.1 995.0 DAY 13 15 15 21 29 30 8 12 3 3 17 21 MEAN QFF PRESSURE IN HPA 1016.4 1014.6 1011.9 1006.7 1002.1 995.6 991.4 995.0 1000.1 1007.7 1014.0 1016.9 1006.0 MAX. QFF PRESSURE IN HPA 1021.5 1019.6 1015.7 1012.7 1007.5 1002.0 996.9 1000.6 1003.9 1013.8 1017.8 1021.8 1021.8 DAY 4 3 7 12 7 16 29 28 25 25 30 10 MIN. QFF PRESSURE IN HPA 1011.9 1009.9 1006.2 1001.4 997.0 988.9 985.6 991.4 996.0 1001.5 1010.5 1012.2 985.6 DAY 13 12 15 21 29 30 8 12 3 1 1 19 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 1999 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AIR TEMPERATURE (C) 13.6 16.3 18.8 27.9 33.4 37.4 37.2 36.4 33.2 28.2 21.5 15.2 26.6 MINIMUN AIR TEMPERATURE (C) 5.7 9.3 9.0 15.2 20.0 24.4 26.8 25.4 22.7 16.5 10.5 2.9 15.7 DAYS WITH MINIMUM TEMP. >=21 0 0 0 0 8 30 31 31 21 0 0 0 121 DAYS WITH MINIMUM TEMP. <=-4 0 0 0 0 0 0 0 0 0 0 0 0 0 DAYS WITH FREEZING MIN.<= 0 3 0 0 0 0 0 0 0 0 0 0 8 11 TEMPERATURE RECORDS LOWEST(C) -2.0 5.0 3.8 10.4 15.0 21.6 23.4 21.4 18.6 13.0 3.0 -1.0 -2.0 DAY 5 1 9 12 5 1 3 24 24 25 30 21 MAXIMUM AIR TEMPERATURE (C) 19.2 21.4 24.6 34.0 39.2 43.4 42.6 42.3 39.3 34.6 28.0 23.3 32.7 DAYS WITH MAXIMUM TEMP. >=30 0 0 5 27 31 30 31 31 30 31 9 0 225 DAYS WITH MAXIMUM TEMP. <= 0 0 0 0 0 0 0 0 0 0 0 0 0 0 TEMPERATURE RECORDS HIGHEST(C) 26.0 26.0 33.0 38.8 41.8 44.6 45.2 44.0 42.4 37.0 32.4 25.6 45.2 DAY 1 28 26 28 13 3 18 9 4 2 1 11 DIF. BETWEEN (MAX.-MIN.) (C) 13.5 12.1 15.6 18.8 19.2 19.0 15.8 16.9 16.6 18.1 17.5 20.4 17.0 MEAN DAILY TEMP. (MDT) (C) 12.4 15.3 16.8 24.6 29.6 33.9 34.7 33.9 31.0 25.5 19.2 13.1 24.2 COOLING DEG. DAYS(BASE 21 0C) 0.0 0.0 2.9 110.1 267.4 386.7 426.1 399.5 299.6 141.0 12.1 0.0 2045.4 HEATING DEG. DAYS(BASE 18 0C) 172.6 77.9 66.6 0.0 0.0 0.0 0.0 0.0 0.0 0.0 15.9 151.9 484.9 DEWPOINT (MEAN C) 3.7 9.3 3.8 6.0 11.6 10.3 15.9 15.5 15.7 9.7 8.5 0.0 9.2 MIXING RATIO (G/KG) 5.69 8.17 5.68 6.71 9.83 8.92 13.16 12.47 12.66 8.34 7.80 4.36 8.65 VAPOUR PRESSURE (HPA) 8.38 12.00 8.33 9.82 14.23 12.90 18.84 17.93 18.26 12.20 11.45 6.46 12.57 SATURATION DEF. (HPA) 7.91 7.20 14.89 30.25 39.70 54.30 46.78 45.23 35.16 28.16 15.90 12.21 28.14 RELATIVE HUMIDITY (MEAN %) 56 67 43 28 29 21 32 32 38 34 45 38 39 RELATIVE HUMIDITY (MAX. %) 79 90 74 49 42 34 49 50 60 52 61 58 58 RELATIVE HUMIDITY (MIN. %) 38 48 25 16 20 14 22 21 25 22 34 25 26 RELATIVE HUMIDITY (MEAN% 03UTC) 78 90 74 49 42 34 49 50 60 52 61 58 58 RELATIVE HUMIDITY (MEAN% 09UTC) 50 59 32 19 23 16 25 23 29 26 38 31 31 RELATIVE HUMIDITY (MEAN% 15UTC) 48 59 34 23 25 17 24 27 31 29 43 37 33 RH=0 => RELATIVE HUMIDITY < 0.5% AMOUNT OF PRECIPITATION MM. 39.2 46.3 34.0 0.0 0.0 0.0 0.0 3.8 0.3 0.0 0.0 0.0 123.6 DAYS WITH PRECIPITATION >=10 1 3 1 0 0 0 0 0 0 0 0 0 5 DAYS WITH PRECIPITATION >= 5 2 4 2 0 0 0 0 0 0 0 0 0 8 DAYS WITH PRECIPITATION >= 1 5 7 4 0 0 0 0 1 0 0 0 0 17 DAYS WITH PRECIPITATION 5 10 4 0 0 0 0 2 1 0 0 0 22 GREATEST DAILY PRECIPITATION 24.0 15.0 23.0 0.0 0.0 0.0 0.0 3.0 0.3 0.0 0.0 0.0 24.0 DAY 18 21 2 ** ** ** ** 16 28 ** ** ** DAY WITH THUNDER STORM 0 0 0 0 0 0 0 3 1 0 0 0 4 DAYS WITH SNOW OR SLEET 0 0 0 0 0 0 0 0 0 0 0 0 0 DAYS WITH DUST 2 0 4 7 18 17 21 22 14 10 3 1 119 WIND DIRECTION (PREVAILING) 90 90 270 270 315 270 90 270 270 270 315 90 270 PREVAILING WIND SPEED(KNOTS) 10.1 10.5 11.3 13.1 11.8 10.5 9.9 9.1 10.2 9.6 12.5 9.5 10.9 PREVAILING WIND PERCENT 7.7 10.7 12.9 22.0 20.0 17.3 17.4 10.3 12.0 9.0 14.7 9.0 11.3 CALMS PERCENT OF WIND 71.6 72.1 58.1 45.3 45.2 48.7 46.5 54.2 62.7 74.8 64.0 76.1 59.9 NO. OF WIND OBSERVATION 155 140 155 150 155 150 155 155 150 155 150 155 1825 VECTOR WIND DIRECTION (MEAN) 24 159 285 282 310 281 153 168 268 259 293 88 282 VECTOR WIND MAGNITUDE(KNOTS) 0.5 0.6 1.3 5.4 3.4 2.8 1.4 0.7 0.9 1.1 2.8 0.5 1.3 WIND STEADINESES (MEAN %) 17.9 20.0 27.7 81.8 52.3 52.8 25.0 14.3 22.5 45.8 70.0 21.7 30.2 WIND SPEED (MEAN KNOTS) 2.8 3.0 4.7 6.6 6.5 5.3 5.6 4.9 4.0 2.4 4.0 2.3 4.3 FASTEST WIND DIRECTION 110 330 270 280 90 290 180 110 120 290 300 270 120 FASTEST WIND SPEED (KNOTS) 21 17 23 23 23 19 23 25 27 17 19 17 27 DAY 18 19 23 6 28 5 3 16 1 25 3 3 DAYS WITH SKY CLEAR (0-2)/8 15 8 23 28 30 30 28 27 28 30 25 28 300 DAYS WITH P.CLOUDY (3-6)/8 12 14 3 2 1 0 3 4 2 1 4 3 49 DAYS WITH CLOUDY (7-8)/8 4 6 5 0 0 0 0 0 0 0 1 0 16 DAYS WITH VISIBILITY =< 2 KM 6 2 0 0 1 0 0 0 0 0 0 0 9 DURATION OF SUNSHINE HOURS 209.3 165.6 279.8 336.0 368.6 361.0 337.9 313.7 290.6 304.9 276.3 288.9 3532.6 ======================================================================================================================= 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 1999 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL MEAN QFE PRESSURE IN HPA 925.0 925.5 921.6 920.9 916.6 913.6 910.6 913.2 916.5 922.0 924.9 927.6 919.8 MAX. QFE PRESSURE IN HPA 929.0 930.1 926.2 925.0 922.2 921.0 915.6 919.0 923.6 926.4 930.1 931.9 931.9 DAY-HOUR 12- 6 12- 9 20- 6 4- 6 1- 6 1- 6 8- 6 18- 6 30- 6 29- 6 14- 6 24- 6 MIN. QFE PRESSURE IN HPA 916.5 919.0 916.5 916.4 910.1 908.0 906.0 908.0 912.2 917.2 919.2 922.7 906.0 DAY-HOUR 18- 3 6-12 2-12 27-15 20-15 23-15 12-12 6-15 16-12 8-12 1-12 15-12 MEAN QNH PRESSURE IN HPA 1016.6 1017.1 1012.9 1012.2 1007.5 1004.3 1001.0 1003.8 1007.4 1013.3 1016.5 1019.4 1011.0 MAX. QNH PRESSURE IN HPA 1020.9 1022.1 1017.9 1016.6 1013.6 1012.3 1006.4 1010.1 1015.1 1018.1 1022.1 1024.0 1024.0 DAY-HOUR 12- 6 12- 9 20- 6 4- 6 1- 6 1- 6 8- 6 18- 6 30- 6 29- 6 14- 6 24- 6 MIN. QNH PRESSURE IN HPA 1007.4 1010.1 1007.4 1007.3 1000.5 998.2 996.1 998.2 1002.8 1008.2 1010.3 1014.1 996.1 DAY-HOUR 18- 3 6-12 2-12 27-15 20-15 23-15 12-12 6-15 16-12 8-12 1-12 15-12 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY-HOUR **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY-HOUR **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** PRESSURE AT HOUR 0000 UTC. MEAN QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** PRESSURE AT HOUR 0300 UTC. MEAN QFE PRESSURE IN HPA 925.1 925.7 921.9 921.3 917.6 914.6 911.7 914.2 917.3 922.7 925.4 928.0 920.5 MAX. QFE PRESSURE IN HPA 927.9 928.1 924.9 924.0 921.0 920.1 914.6 918.3 922.2 924.8 929.2 930.3 930.3 DAY 12 12 20 5 1 2 1 19 30 16 15 23 MIN. QFE PRESSURE IN HPA 916.5 920.0 917.0 918.8 913.9 909.9 909.0 910.4 914.8 920.2 922.0 924.4 909.0 DAY 18 6 2 8 21 24 12 7 16 8 1 27 MEAN QNH PRESSURE IN HPA 1016.6 1017.4 1013.2 1012.6 1008.6 1005.3 1002.2 1005.0 1008.3 1014.1 1017.0 1019.9 1011.7 MAX. QNH PRESSURE IN HPA 1019.7 1019.9 1016.5 1015.5 1012.3 1011.3 1005.3 1009.3 1013.6 1016.4 1021.1 1022.3 1022.3 DAY 12 12 20 5 1 2 1 19 30 16 15 23 MIN. QNH PRESSURE IN HPA 1007.4 1011.2 1007.9 1009.9 1004.6 1000.3 999.3 1000.8 1005.6 1011.4 1013.3 1015.9 999.3 DAY 18 6 2 8 21 24 12 7 16 8 1 27 MEAN QFF PRESSURE IN HPA 1016.2 1015.8 1011.2 1008.1 1002.2 997.7 994.1 997.4 1001.7 1009.5 1014.5 1019.8 1007.4 MAX. QFF PRESSURE IN HPA 1020.2 1018.8 1015.4 1012.0 1005.9 1004.3 997.5 1003.7 1007.8 1012.6 1018.5 1023.5 1023.5 DAY 12 8 8 11 2 1 1 24 30 28 15 23 MIN. QFF PRESSURE IN HPA 1006.0 1009.6 1004.8 1004.5 998.1 992.8 990.6 992.8 998.6 1006.3 1009.4 1015.6 990.6 DAY 18 6 2 28 21 24 12 7 10 8 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 1999 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 0600 UTC. MEAN QFE PRESSURE IN HPA 926.5 927.1 923.3 922.7 918.4 915.1 912.2 914.9 918.2 923.9 926.7 929.5 921.5 MAX. QFE PRESSURE IN HPA 929.0 929.9 926.2 925.0 922.2 921.0 915.6 919.0 923.6 926.4 930.1 931.9 931.9 DAY 12 12 20 4 1 1 8 18 30 29 14 24 MIN. QFE PRESSURE IN HPA 919.7 921.8 918.8 920.3 914.6 910.2 909.2 910.6 915.7 921.0 923.4 926.2 909.2 DAY 18 6 2 8 21 24 12 7 16 8 1 15 MEAN QNH PRESSURE IN HPA 1018.2 1018.8 1014.8 1014.0 1009.5 1005.9 1002.8 1005.6 1009.2 1015.4 1018.4 1021.5 1012.8 MAX. QNH PRESSURE IN HPA 1020.9 1021.9 1017.9 1016.6 1013.6 1012.3 1006.4 1010.1 1015.1 1018.1 1022.1 1024.0 1024.0 DAY 12 12 20 4 1 1 8 18 30 29 14 24 MIN. QNH PRESSURE IN HPA 1010.9 1013.1 1009.9 1011.5 1005.3 1000.6 999.5 1001.0 1006.5 1012.3 1014.8 1017.9 999.5 DAY 18 6 2 8 21 24 12 7 16 8 1 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 925.5 926.0 922.3 921.6 917.1 913.9 911.0 913.6 916.9 922.2 925.1 927.9 920.2 MAX. QFE PRESSURE IN HPA 928.3 930.1 925.0 923.8 920.8 920.0 913.4 918.0 922.0 924.7 929.0 930.8 930.8 DAY 14 12 19 11 1 1 1 19 30 23 14 24 MIN. QFE PRESSURE IN HPA 919.7 920.2 918.2 919.0 913.0 909.0 908.0 909.6 914.2 919.5 921.0 924.4 908.0 DAY 18 6 2 27 21 24 12 7 15 3 1 15 MEAN QNH PRESSURE IN HPA 1017.1 1017.6 1013.6 1012.9 1008.0 1004.6 1001.4 1004.2 1007.8 1013.5 1016.7 1019.7 1011.4 MAX. QNH PRESSURE IN HPA 1020.1 1022.1 1016.6 1015.3 1012.0 1011.2 1004.1 1009.0 1013.3 1016.3 1020.9 1022.8 1022.8 DAY 14 12 19 11 1 1 1 19 30 23 14 24 MIN. QNH PRESSURE IN HPA 1010.9 1011.4 1009.2 1010.1 1003.6 999.3 998.2 999.9 1004.9 1010.6 1012.3 1015.9 998.2 DAY 18 6 2 27 21 24 12 7 15 3 1 15 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** PRESSURE AT HOUR 1200 UTC. MEAN QFE PRESSURE IN HPA 923.8 924.0 920.3 919.6 915.1 912.3 909.2 911.6 914.8 920.4 923.4 926.2 918.4 MAX. QFE PRESSURE IN HPA 926.8 927.2 923.0 922.0 919.0 918.5 912.0 915.9 920.0 922.9 927.5 929.0 929.0 DAY 12 12 19 4 1 1 1 18 30 23 14 24 MIN. QFE PRESSURE IN HPA 918.1 919.0 916.5 917.0 910.8 908.0 906.0 908.0 912.2 917.2 919.2 922.7 906.0 DAY 18 6 2 27 20 24 12 7 16 8 1 15 MEAN QNH PRESSURE IN HPA 1015.3 1015.5 1011.5 1010.7 1005.9 1002.9 999.5 1002.1 1005.5 1011.6 1014.9 1017.9 1009.4 MAX. QNH PRESSURE IN HPA 1018.5 1019.0 1014.4 1013.3 1010.1 1009.6 1002.5 1006.8 1011.2 1014.3 1019.3 1020.9 1020.9 DAY 12 12 19 4 1 1 1 18 30 23 14 24 MIN. QNH PRESSURE IN HPA 1009.1 1010.1 1007.4 1007.9 1001.2 998.2 996.1 998.2 1002.8 1008.2 1010.3 1014.1 996.1 DAY 18 6 2 27 20 24 12 7 16 8 1 15 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION 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 1999 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 1500 UTC. MEAN QFE PRESSURE IN HPA 924.2 924.6 920.5 919.5 914.7 912.1 909.0 911.7 915.2 920.7 924.0 926.5 918.6 MAX. QFE PRESSURE IN HPA 927.0 928.0 923.0 922.5 918.6 917.9 912.2 918.0 920.2 923.2 928.2 929.5 929.5 DAY 13 22 19 4 1 1 1 23 30 27 14 24 MIN. QFE PRESSURE IN HPA 918.1 921.0 916.8 916.4 910.1 908.0 906.6 908.0 912.3 917.6 920.1 923.1 906.6 DAY 18 6 2 27 20 23 11 6 18 8 4 15 MEAN QNH PRESSURE IN HPA 1015.7 1016.1 1011.7 1010.7 1005.5 1002.6 999.3 1002.2 1006.0 1011.9 1015.5 1018.2 1009.6 MAX. QNH PRESSURE IN HPA 1018.7 1019.8 1014.4 1013.9 1009.7 1008.9 1002.8 1009.0 1011.4 1014.6 1020.0 1021.4 1021.4 DAY 13 22 19 4 1 1 1 23 30 27 14 24 MIN. QNH PRESSURE IN HPA 1009.1 1012.3 1007.7 1007.3 1000.5 998.2 996.7 998.2 1002.9 1008.6 1011.3 1014.5 996.7 DAY 18 6 2 27 20 23 11 6 18 8 4 15 MEAN QFF PRESSURE IN HPA 1015.2 1014.5 1009.8 1006.1 998.9 994.9 991.2 994.6 999.4 1007.2 1012.9 1018.1 1005.2 MAX. QFF PRESSURE IN HPA 1018.7 1018.2 1013.0 1009.7 1003.0 1001.8 995.0 1003.0 1005.7 1010.6 1017.2 1022.2 1022.2 DAY 11 22 8 11 1 1 1 23 30 23 14 24 MIN. QFF PRESSURE IN HPA 1007.4 1010.4 1005.7 1001.1 993.8 990.5 988.0 990.2 996.1 1003.5 1007.4 1012.9 988.0 DAY 18 6 2 27 20 24 20 7 18 8 1 15 PRESSURE AT HOUR 1800 UTC. MEAN QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** PRESSURE AT HOUR 2100 UTC. MEAN QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION 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 2000 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AIR TEMPERATURE (C) 14.3 16.0 20.5 29.4 34.0 36.2 37.3 36.3 32.6 27.2 19.0 14.9 26.5 MINIMUN AIR TEMPERATURE (C) 5.5 5.4 8.9 16.6 20.2 22.7 25.5 25.5 21.4 15.9 10.6 6.6 15.4 DAYS WITH MINIMUM TEMP. >=21 0 0 0 1 10 26 31 30 17 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) 0.2 1.0 4.0 9.0 18.2 18.0 22.2 20.6 17.2 12.4 4.6 1.4 0.2 DAY 3 10 8 1 4 16 21 23 23 23 23 30 MAXIMUM AIR TEMPERATURE (C) 20.0 22.6 27.2 35.4 40.1 41.9 42.8 41.7 38.4 33.5 24.7 20.8 32.4 DAYS WITH MAXIMUM TEMP. >=30 0 0 5 29 31 30 31 31 30 30 4 0 221 DAYS WITH MAXIMUM TEMP. <= 0 0 0 0 0 0 0 0 0 0 0 0 0 0 TEMPERATURE RECORDS HIGHEST(C) 23.0 29.4 32.2 38.6 43.2 45.0 45.0 43.4 42.0 37.8 32.6 27.0 45.0 DAY 3 27 22 21 29 30 8 9 9 1 1 4 DIF. BETWEEN (MAX.-MIN.) (C) 14.5 17.2 18.3 18.8 19.9 19.2 17.3 16.2 17.0 17.6 14.1 14.2 17.0 MEAN DAILY TEMP. (MDT) (C) 12.8 14.0 18.0 26.0 30.2 32.3 34.1 33.6 29.9 24.7 17.6 13.7 23.9 COOLING DEG. DAYS(BASE 21 0C) 0.0 0.0 4.8 152.4 284.7 340.2 407.6 391.5 267.1 115.2 9.7 0.0 1973.2 HEATING DEG. DAYS(BASE 18 0C) 162.4 121.3 36.3 0.0 0.0 0.0 0.0 0.0 0.0 0.0 40.5 137.9 498.3 DEWPOINT (MEAN C) 4.4 2.0 0.7 8.7 10.6 13.2 15.2 14.9 13.7 9.5 7.3 5.7 8.8 MIXING RATIO (G/KG) 5.99 4.91 4.58 7.95 9.48 10.84 12.30 12.14 11.24 8.24 7.20 6.34 8.43 VAPOUR PRESSURE (HPA) 8.81 7.24 6.74 11.61 13.73 15.62 17.67 17.47 16.25 12.05 10.58 9.34 12.26 SATURATION DEF. (HPA) 8.19 12.23 19.12 31.74 42.12 47.12 48.52 45.18 35.30 25.94 12.51 8.68 28.05 RELATIVE HUMIDITY (MEAN %) 55 41 29 30 27 27 29 30 35 35 50 58 37 RELATIVE HUMIDITY (MAX. %) 75 63 43 46 38 43 45 47 54 52 73 80 55 RELATIVE HUMIDITY (MIN. %) 40 26 20 20 19 19 20 20 22 24 33 41 25 RELATIVE HUMIDITY (MEAN% 03UTC) 75 63 42 46 38 42 44 47 54 52 71 79 54 RELATIVE HUMIDITY (MEAN% 09UTC) 48 32 23 24 22 21 23 24 28 28 40 49 30 RELATIVE HUMIDITY (MEAN% 15UTC) 50 36 26 27 24 23 26 26 27 31 48 54 33 RH=0 => RELATIVE HUMIDITY < 0.5% AMOUNT OF PRECIPITATION MM. 20.8 0.0 0.0 0.0 0.0 0.0 4.0 0.6 0.0 0.0 12.6 64.1 102.1 DAYS WITH PRECIPITATION >=10 1 0 0 0 0 0 0 0 0 0 0 2 3 DAYS WITH PRECIPITATION >= 5 2 0 0 0 0 0 0 0 0 0 1 2 5 DAYS WITH PRECIPITATION >= 1 2 0 0 0 0 0 1 0 0 0 4 2 9 DAYS WITH PRECIPITATION 4 0 0 0 0 0 1 1 0 1 4 3 14 GREATEST DAILY PRECIPITATION 14.0 0.0 0.0 0.0 0.0 0.0 4.0 0.6 0.0 0.0 5.0 36.0 36.0 DAY 17 ** ** ** ** ** 14 19 ** ** 10 11 DAY WITH THUNDER STORM 0 0 0 0 0 0 2 2 1 1 0 1 7 DAYS WITH SNOW OR SLEET 0 0 0 0 0 0 0 0 0 0 0 0 0 DAYS WITH DUST 0 1 11 11 15 24 23 22 15 2 8 1 133 WIND DIRECTION (PREVAILING) 270 270 270 315 270 270 270 315 225 135 315 45 270 PREVAILING WIND SPEED(KNOTS) 9.4 10.6 11.9 14.6 11.0 10.8 11.9 12.3 11.3 12.3 12.2 9.5 11.2 PREVAILING WIND PERCENT 10.3 26.2 27.1 26.0 17.4 19.3 9.0 9.7 12.7 8.4 7.3 9.7 12.5 CALMS PERCENT OF WIND 67.1 53.1 39.4 46.0 48.4 49.3 52.9 52.9 55.3 68.4 71.3 80.0 57.0 NO. OF WIND OBSERVATION 155 145 155 150 155 150 155 155 150 155 150 155 1830 VECTOR WIND DIRECTION (MEAN) 212 282 277 302 293 261 277 254 260 193 304 358 283 VECTOR WIND MAGNITUDE(KNOTS) 0.4 3.2 5.1 5.4 3.4 2.7 0.8 0.9 1.2 0.5 0.3 1.2 1.9 WIND STEADINESES (MEAN %) 11.1 62.7 68.0 77.1 57.6 48.2 15.7 16.1 25.0 14.3 9.1 60.0 38.8 WIND SPEED (MEAN KNOTS) 3.6 5.1 7.5 7.0 5.9 5.6 5.1 5.6 4.8 3.5 3.3 2.0 4.9 FASTEST WIND DIRECTION 240 300 260 310 330 120 330 280 110 250 240 310 330 FASTEST WIND SPEED (KNOTS) 23 21 23 27 21 19 31 27 21 19 19 17 31 DAY 19 2 26 6 2 21 15 17 5 1 6 6 DAYS WITH SKY CLEAR (0-2)/8 17 21 23 23 27 30 26 28 30 29 15 22 291 DAYS WITH P.CLOUDY (3-6)/8 9 8 8 7 4 0 5 3 0 2 12 4 62 DAYS WITH CLOUDY (7-8)/8 5 0 0 0 0 0 0 0 0 0 3 5 13 DAYS WITH VISIBILITY =< 2 KM 4 1 0 0 0 0 2 2 0 0 0 6 15 DURATION OF SUNSHINE HOURS 225.1 264.8 302.4 311.7 368.3 347.8 323.0 325.0 310.6 310.5 224.4 242.8 3556.4 ======================================================================================================================= 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 2000 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL MEAN QFE PRESSURE IN HPA 925.2 924.4 922.4 920.2 916.0 912.5 911.7 913.5 917.2 922.5 925.7 926.5 919.8 MAX. QFE PRESSURE IN HPA 931.2 929.9 926.4 925.8 922.2 917.7 917.0 918.0 924.0 927.0 932.5 932.3 932.5 DAY-HOUR 31- 6 4- 6 21- 6 1- 6 1- 6 17- 6 26- 6 13- 6 29- 6 16- 6 30- 6 17- 6 MIN. QFE PRESSURE IN HPA 919.0 918.0 917.9 916.0 910.8 907.8 905.3 908.8 908.6 917.0 919.9 921.0 905.3 DAY-HOUR 10-12 7-12 13-12 21-12 27-15 30-15 9-15 10-12 1-15 1-12 6-12 15-12 MEAN QNH PRESSURE IN HPA 1016.7 1015.9 1013.8 1011.4 1006.9 1003.1 1002.2 1004.1 1008.2 1013.9 1017.4 1018.1 1011.0 MAX. QNH PRESSURE IN HPA 1023.3 1021.9 1018.1 1017.4 1013.6 1008.7 1007.9 1009.0 1015.5 1018.7 1024.7 1024.5 1024.7 DAY-HOUR 31- 6 4- 6 21- 6 1- 6 1- 6 17- 6 26- 6 13- 6 29- 6 16- 6 30- 6 17- 6 MIN. QNH PRESSURE IN HPA 1010.1 1009.0 1008.9 1006.9 1001.2 998.0 995.3 999.1 998.9 1007.9 1011.1 1012.3 995.3 DAY-HOUR 10-12 7-12 13-12 21-12 27-15 30-15 9-15 10-12 1-15 1-12 6-12 15-12 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY-HOUR **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY-HOUR **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** PRESSURE AT HOUR 0000 UTC. MEAN QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** PRESSURE AT HOUR 0300 UTC. MEAN QFE PRESSURE IN HPA 925.2 924.7 922.9 920.9 916.9 913.6 912.8 914.7 918.1 923.1 926.0 926.7 920.5 MAX. QFE PRESSURE IN HPA 929.9 929.0 924.8 924.2 921.0 916.6 916.6 917.9 923.1 925.7 930.8 930.8 930.8 DAY 31 11 4 2 1 17 30 14 29 30 30 18 MIN. QFE PRESSURE IN HPA 920.1 920.5 920.5 918.0 914.0 911.2 908.5 911.9 910.9 919.2 920.6 922.0 908.5 DAY 17 8 13 21 27 6 12 31 1 1 7 15 MEAN QNH PRESSURE IN HPA 1016.8 1016.3 1014.3 1012.1 1007.8 1004.3 1003.4 1005.4 1009.1 1014.5 1017.6 1018.4 1011.7 MAX. QNH PRESSURE IN HPA 1021.9 1020.9 1016.4 1015.7 1012.3 1007.5 1007.5 1008.9 1014.5 1017.3 1022.8 1022.8 1022.8 DAY 31 11 4 2 1 17 30 14 29 30 30 18 MIN. QNH PRESSURE IN HPA 1011.3 1011.7 1011.7 1009.0 1004.7 1001.7 998.8 1002.4 1001.4 1010.3 1011.8 1013.3 998.8 DAY 17 8 13 21 27 6 12 31 1 1 7 15 MEAN QFF PRESSURE IN HPA 1016.3 1015.4 1012.0 1007.1 1001.3 997.0 995.6 997.8 1002.7 1010.1 1015.7 1017.7 1007.4 MAX. QFF PRESSURE IN HPA 1021.9 1021.3 1015.5 1012.9 1006.2 1001.1 999.9 1001.5 1008.7 1013.4 1021.7 1023.9 1023.9 DAY 31 11 4 1 1 17 30 14 23 30 30 18 MIN. QFF PRESSURE IN HPA 1010.8 1010.3 1009.7 1003.4 997.5 994.2 990.2 994.4 994.6 1004.7 1010.2 1011.4 990.2 DAY 17 7 19 21 28 6 12 30 1 1 7 11 ======================================================================================================================= 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 2000 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 0600 UTC. MEAN QFE PRESSURE IN HPA 926.7 926.2 924.2 922.0 917.6 914.2 913.3 915.2 919.0 924.4 927.4 928.2 921.5 MAX. QFE PRESSURE IN HPA 931.2 929.9 926.4 925.8 922.2 917.7 917.0 918.0 924.0 927.0 932.5 932.3 932.5 DAY 31 4 21 1 1 17 26 13 29 16 30 17 MIN. QFE PRESSURE IN HPA 922.0 921.3 922.0 919.0 914.8 911.8 909.0 912.2 911.7 919.7 921.9 923.0 909.0 DAY 17 7 13 21 27 6 12 11 1 1 7 15 MEAN QNH PRESSURE IN HPA 1018.5 1017.9 1015.7 1013.3 1008.6 1004.9 1003.9 1006.0 1010.1 1015.9 1019.2 1020.0 1012.8 MAX. QNH PRESSURE IN HPA 1023.3 1021.9 1018.1 1017.4 1013.6 1008.7 1007.9 1009.0 1015.5 1018.7 1024.7 1024.5 1024.7 DAY 31 4 21 1 1 17 26 13 29 16 30 17 MIN. QNH PRESSURE IN HPA 1013.3 1012.6 1013.3 1010.1 1005.6 1002.3 999.3 1002.8 1002.2 1010.9 1013.2 1014.4 999.3 DAY 17 7 13 21 27 6 12 11 1 1 7 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 925.5 925.0 923.1 920.8 916.6 913.1 912.1 914.0 917.6 922.8 925.9 926.5 920.2 MAX. QFE PRESSURE IN HPA 930.1 929.0 925.0 925.0 921.0 916.1 916.0 916.8 922.2 925.2 930.6 931.0 931.0 DAY 31 4 8 1 1 17 30 13 29 26 30 17 MIN. QFE PRESSURE IN HPA 921.0 919.6 920.5 918.0 913.5 910.6 907.5 911.2 910.5 918.5 921.0 922.0 907.5 DAY 10 7 13 21 28 26 9 10 1 1 7 15 MEAN QNH PRESSURE IN HPA 1017.1 1016.6 1014.5 1012.0 1007.5 1003.7 1002.6 1004.7 1008.6 1014.2 1017.5 1018.2 1011.4 MAX. QNH PRESSURE IN HPA 1022.1 1020.9 1016.6 1016.6 1012.3 1007.0 1006.9 1007.7 1013.6 1016.8 1022.6 1023.1 1023.1 DAY 31 4 8 1 1 17 30 13 29 26 30 17 MIN. QNH PRESSURE IN HPA 1012.3 1010.7 1011.7 1009.0 1004.2 1001.0 997.7 1001.7 1000.9 1009.6 1012.3 1013.3 997.7 DAY 10 7 13 21 28 26 9 10 1 1 7 15 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** PRESSURE AT HOUR 1200 UTC. MEAN QFE PRESSURE IN HPA 924.0 923.0 921.0 918.7 914.6 911.2 910.2 911.9 915.7 921.1 924.4 925.1 918.4 MAX. QFE PRESSURE IN HPA 927.9 926.8 922.9 922.2 918.8 914.5 914.4 915.0 920.3 923.8 929.0 929.8 929.8 DAY 31 11 25 1 3 17 30 13 29 26 30 17 MIN. QFE PRESSURE IN HPA 919.0 918.0 917.9 916.0 911.0 908.8 905.5 908.8 908.8 917.0 919.9 921.0 905.5 DAY 10 7 13 21 27 30 9 10 1 1 6 15 MEAN QNH PRESSURE IN HPA 1015.5 1014.4 1012.2 1009.7 1005.4 1001.7 1000.6 1002.5 1006.6 1012.3 1016.0 1016.7 1009.5 MAX. QNH PRESSURE IN HPA 1019.7 1018.5 1014.3 1013.6 1009.9 1005.2 1005.1 1005.8 1011.5 1015.3 1020.9 1021.8 1021.8 DAY 31 11 25 1 3 17 30 13 29 26 30 17 MIN. QNH PRESSURE IN HPA 1010.1 1009.0 1008.9 1006.9 1001.5 999.1 995.5 999.1 999.1 1007.9 1011.1 1012.3 995.5 DAY 10 7 13 21 27 30 9 10 1 1 6 15 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION 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 2000 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 1500 UTC. MEAN QFE PRESSURE IN HPA 924.4 923.2 921.1 918.7 914.3 910.7 910.0 911.6 915.7 921.3 925.1 925.8 918.5 MAX. QFE PRESSURE IN HPA 928.1 926.8 922.4 922.0 918.2 914.0 914.0 915.1 920.1 924.0 929.5 930.0 930.0 DAY 25 10 7 1 3 16 30 17 29 25 30 17 MIN. QFE PRESSURE IN HPA 919.6 918.6 918.3 916.0 910.8 907.8 905.3 908.8 908.6 917.2 919.9 922.5 905.3 DAY 10 7 13 21 27 30 9 11 1 1 6 11 MEAN QNH PRESSURE IN HPA 1016.0 1014.7 1012.3 1009.8 1005.0 1001.1 1000.4 1002.1 1006.6 1012.6 1016.7 1017.5 1009.6 MAX. QNH PRESSURE IN HPA 1019.9 1018.5 1013.8 1013.3 1009.2 1004.7 1004.7 1005.9 1011.3 1015.5 1021.4 1022.0 1022.0 DAY 25 10 7 1 3 16 30 17 29 25 30 17 MIN. QNH PRESSURE IN HPA 1010.7 1009.7 1009.3 1006.9 1001.2 998.0 995.3 999.1 998.9 1008.2 1011.1 1013.9 995.3 DAY 10 7 13 21 27 30 9 11 1 1 6 11 MEAN QFF PRESSURE IN HPA 1015.4 1013.7 1010.0 1004.5 998.2 993.7 992.4 994.4 1000.1 1008.2 1014.7 1016.7 1005.2 MAX. QFF PRESSURE IN HPA 1020.1 1018.9 1012.7 1010.3 1003.2 998.2 997.2 998.6 1005.5 1011.7 1020.3 1022.5 1022.5 DAY 25 11 7 1 3 16 30 17 22 26 30 17 MIN. QFF PRESSURE IN HPA 1009.0 1008.1 1007.6 1000.9 993.4 989.4 986.9 991.3 992.4 1002.7 1008.1 1011.8 986.9 DAY 10 7 13 21 28 30 11 30 1 1 1 11 PRESSURE AT HOUR 1800 UTC. MEAN QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** PRESSURE AT HOUR 2100 UTC. MEAN QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION 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 2001 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AIR TEMPERATURE (C) 12.1 15.4 21.2 28.2 34.2 36.6 37.9 35.7 33.0 28.3 20.2 18.0 26.7 MINIMUN AIR TEMPERATURE (C) 2.3 5.0 10.4 15.1 21.1 24.1 27.0 24.4 21.9 16.1 8.7 9.1 15.4 DAYS WITH MINIMUM TEMP. >=21 0 0 0 1 13 30 31 31 22 0 0 0 128 DAYS WITH MINIMUM TEMP. <=-4 1 0 0 0 0 0 0 0 0 0 0 0 1 DAYS WITH FREEZING MIN.<= 0 3 2 0 0 0 0 0 0 0 0 0 0 5 TEMPERATURE RECORDS LOWEST(C) -4.0 -2.0 5.4 11.0 18.0 21.2 24.0 21.4 17.4 12.8 3.8 4.6 -4.0 DAY 29 1 1 15 7 13 1 15 20 18 22 29 MAXIMUM AIR TEMPERATURE (C) 18.9 22.1 27.3 34.1 39.9 42.1 43.5 41.8 39.1 34.9 27.2 23.8 32.9 DAYS WITH MAXIMUM TEMP. >=30 0 0 4 30 31 30 31 31 30 31 8 0 226 DAYS WITH MAXIMUM TEMP. <= 0 0 0 0 0 0 0 0 0 0 0 0 0 0 TEMPERATURE RECORDS HIGHEST(C) 21.8 26.0 31.2 38.6 43.4 44.2 46.2 43.6 43.4 38.8 32.2 27.8 46.2 DAY 16 28 31 28 18 22 9 4 1 2 5 8 DIF. BETWEEN (MAX.-MIN.) (C) 16.6 17.1 16.9 19.0 18.8 18.0 16.5 17.4 17.2 18.8 18.5 14.7 17.5 MEAN DAILY TEMP. (MDT) (C) 10.6 13.5 18.8 24.6 30.5 33.1 35.3 33.1 30.5 25.5 18.0 16.4 24.2 COOLING DEG. DAYS(BASE 21 0C) 0.0 0.0 2.1 108.9 294.3 362.5 442.9 375.9 285.8 139.7 1.5 0.0 2013.6 HEATING DEG. DAYS(BASE 18 0C) 230.0 125.4 10.4 0.0 0.0 0.0 0.0 0.0 0.0 0.0 25.8 51.0 442.6 DEWPOINT (MEAN C) 2.4 1.7 7.3 4.8 9.8 10.8 14.3 14.9 14.0 8.4 4.3 8.6 8.5 MIXING RATIO (G/KG) 5.05 4.81 7.20 6.00 8.59 9.16 11.73 12.18 11.18 7.70 5.85 7.74 8.10 VAPOUR PRESSURE (HPA) 7.45 7.09 10.55 8.79 12.47 13.21 16.83 17.53 16.20 11.28 8.62 11.41 11.79 SATURATION DEF. (HPA) 7.48 11.50 16.07 31.72 44.02 50.89 51.58 43.58 36.61 29.41 16.73 10.21 29.15 RELATIVE HUMIDITY (MEAN %) 56 43 44 25 24 23 27 33 34 31 39 58 36 RELATIVE HUMIDITY (MAX. %) 83 66 66 41 37 38 44 56 54 48 58 80 56 RELATIVE HUMIDITY (MIN. %) 35 27 29 16 17 15 18 20 22 20 25 41 24 RELATIVE HUMIDITY (MEAN% 03UTC) 83 65 66 41 37 38 44 56 54 48 58 79 56 RELATIVE HUMIDITY (MEAN% 09UTC) 42 33 36 19 20 18 21 24 26 24 30 49 29 RELATIVE HUMIDITY (MEAN% 15UTC) 49 36 36 18 21 20 22 25 28 28 37 52 31 RH=0 => RELATIVE HUMIDITY < 0.5% AMOUNT OF PRECIPITATION MM. 11.0 0.3 8.0 0.0 0.0 0.0 0.0 16.4 0.2 0.0 5.3 14.1 55.3 DAYS WITH PRECIPITATION >=10 0 0 0 0 0 0 0 0 0 0 0 0 0 DAYS WITH PRECIPITATION >= 5 2 0 0 0 0 0 0 3 0 0 1 1 7 DAYS WITH PRECIPITATION >= 1 2 0 4 0 0 0 0 3 0 0 1 2 12 DAYS WITH PRECIPITATION 2 1 4 0 0 1 0 4 1 0 2 4 19 GREATEST DAILY PRECIPITATION 6.0 0.3 4.0 0.0 0.0 0.0 0.0 6.0 0.2 0.0 5.0 9.0 9.0 DAY 10 22 16 ** ** ** ** 11 19 ** 14 16 DAY WITH THUNDER STORM 0 0 0 0 0 0 1 1 1 0 0 1 4 DAYS WITH SNOW OR SLEET 0 0 0 0 0 0 0 0 0 0 0 0 0 DAYS WITH DUST 2 5 10 10 25 22 28 12 13 3 1 0 131 WIND DIRECTION (PREVAILING) 45 270 270 270 270 270 270 270 270 225 270 270 270 PREVAILING WIND SPEED(KNOTS) 10.0 10.0 12.2 12.2 10.6 9.4 11.0 9.8 11.9 7.9 11.3 10.4 10.9 PREVAILING WIND PERCENT 5.8 15.7 11.6 36.7 36.1 13.3 15.5 11.6 14.0 11.0 12.0 9.0 15.6 CALMS PERCENT OF WIND 74.8 63.6 69.0 48.0 43.9 54.7 48.4 53.5 52.0 70.3 71.3 76.1 60.5 NO. OF WIND OBSERVATION 155 140 155 150 155 150 155 155 150 155 150 155 1825 VECTOR WIND DIRECTION (MEAN) 60 308 309 267 261 209 220 233 224 230 254 249 255 VECTOR WIND MAGNITUDE(KNOTS) 0.7 1.2 0.8 5.2 4.1 0.6 1.2 0.9 2.3 1.0 1.2 0.9 1.4 WIND STEADINESES (MEAN %) 26.9 32.4 22.2 81.3 69.5 14.0 21.1 19.6 42.6 38.5 42.9 39.1 34.1 WIND SPEED (MEAN KNOTS) 2.6 3.7 3.6 6.4 5.9 4.3 5.7 4.6 5.4 2.6 2.8 2.3 4.1 FASTEST WIND DIRECTION 250 350 260 310 310 60 240 80 80 280 250 280 80 FASTEST WIND SPEED (KNOTS) 19 21 25 27 25 19 29 43 25 17 23 17 43 DAY 27 12 10 17 1 22 6 10 19 2 1 21 DAYS WITH SKY CLEAR (0-2)/8 25 20 18 23 27 28 24 29 28 31 22 16 291 DAYS WITH P.CLOUDY (3-6)/8 5 4 12 7 3 2 7 2 2 0 7 11 62 DAYS WITH CLOUDY (7-8)/8 1 4 1 0 1 0 0 0 0 0 1 4 12 DAYS WITH VISIBILITY =< 2 KM 1 0 0 0 0 0 0 0 0 0 0 4 5 DURATION OF SUNSHINE HOURS 271.3 244.5 262.8 332.1 356.8 347.4 333.0 342.5 306.4 321.8 280.1 228.9 3627.6 ======================================================================================================================= 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 2001 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL MEAN QFE PRESSURE IN HPA 926.3 924.7 922.6 920.5 915.9 911.3 910.8 914.4 918.1 922.6 925.7 928.1 920.1 MAX. QFE PRESSURE IN HPA 932.0 930.1 931.0 928.1 921.5 916.9 915.1 919.4 924.7 927.2 930.6 933.7 933.7 DAY-HOUR 30- 6 9- 6 2- 6 1- 6 5- 6 3- 6 27- 6 15- 6 22- 6 16- 6 21- 6 28- 6 MIN. QFE PRESSURE IN HPA 922.2 919.0 915.8 916.0 909.7 907.1 906.0 910.1 911.0 916.5 920.0 922.8 906.0 DAY-HOUR 27-12 5-12 25-15 13-12 26-15 17-15 9-12 3-12 1-12 2-12 11-12 5-12 MEAN QNH PRESSURE IN HPA 1017.9 1016.2 1014.0 1011.7 1006.8 1001.8 1001.2 1005.1 1009.1 1013.9 1017.3 1019.9 1011.2 MAX. QNH PRESSURE IN HPA 1024.1 1022.1 1023.1 1019.9 1012.8 1007.8 1005.9 1010.5 1016.3 1019.0 1022.6 1026.0 1026.0 DAY-HOUR 30- 6 9- 6 2- 6 1- 6 5- 6 3- 6 27- 6 15- 6 22- 6 16- 6 21- 6 28- 6 MIN. QNH PRESSURE IN HPA 1013.6 1010.1 1006.6 1006.9 1000.1 997.2 996.1 1000.5 1001.5 1007.4 1011.2 1014.2 996.1 DAY-HOUR 27-12 5-12 25-15 13-12 26-15 17-15 9-12 3-12 1-12 2-12 11-12 5-12 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY-HOUR **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY-HOUR **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** PRESSURE AT HOUR 0000 UTC. MEAN QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** PRESSURE AT HOUR 0300 UTC. MEAN QFE PRESSURE IN HPA 926.3 924.9 923.1 921.2 916.8 912.5 911.9 915.5 919.0 923.2 926.0 928.3 920.7 MAX. QFE PRESSURE IN HPA 930.1 928.0 929.6 926.8 920.3 916.2 914.6 918.8 924.0 925.8 929.4 931.9 931.9 DAY 30 1 1 1 1 3 27 15 23 24 21 28 MIN. QFE PRESSURE IN HPA 924.0 920.1 918.0 917.9 911.7 909.7 909.2 912.7 913.0 919.0 922.0 924.2 909.2 DAY 20 22 26 10 26 18 4 3 1 1 12 5 MEAN QNH PRESSURE IN HPA 1018.0 1016.5 1014.5 1012.4 1007.8 1003.0 1002.5 1006.4 1010.1 1014.7 1017.6 1020.1 1012.0 MAX. QNH PRESSURE IN HPA 1022.1 1019.8 1021.5 1018.5 1011.5 1007.1 1005.3 1009.9 1015.5 1017.4 1021.3 1024.0 1024.0 DAY 30 1 1 1 1 3 27 15 23 24 21 28 MIN. QNH PRESSURE IN HPA 1015.5 1011.3 1009.0 1008.9 1002.2 1000.1 999.5 1003.3 1003.6 1010.1 1013.3 1015.7 999.5 DAY 20 22 26 10 26 18 4 3 1 1 12 5 MEAN QFF PRESSURE IN HPA 1018.5 1015.9 1011.8 1007.8 1001.2 995.5 994.3 999.0 1003.7 1010.2 1015.8 1018.4 1007.7 MAX. QFF PRESSURE IN HPA 1024.3 1020.8 1020.2 1014.9 1006.1 1000.1 997.9 1003.0 1010.0 1013.7 1021.1 1023.0 1024.3 DAY 30 1 1 1 1 3 31 15 23 16 21 28 MIN. QFF PRESSURE IN HPA 1015.0 1009.8 1005.6 1003.1 995.8 992.7 990.9 995.7 995.6 1004.5 1010.8 1013.5 990.9 DAY 27 22 23 26 26 18 9 3 1 1 12 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 2001 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 0600 UTC. MEAN QFE PRESSURE IN HPA 927.9 926.4 924.5 922.3 917.6 912.8 912.3 916.2 919.9 924.5 927.4 929.8 921.8 MAX. QFE PRESSURE IN HPA 932.0 930.1 931.0 928.1 921.5 916.9 915.1 919.4 924.7 927.2 930.6 933.7 933.7 DAY 30 9 2 1 5 3 27 15 22 16 21 28 MIN. QFE PRESSURE IN HPA 925.1 922.8 920.0 919.2 912.3 910.8 909.0 913.5 914.2 920.1 923.2 925.9 909.0 DAY 27 5 23 10 26 18 4 3 1 3 12 5 MEAN QNH PRESSURE IN HPA 1019.8 1018.1 1016.0 1013.7 1008.6 1003.4 1002.9 1007.1 1011.1 1016.0 1019.2 1021.8 1013.1 MAX. QNH PRESSURE IN HPA 1024.1 1022.1 1023.1 1019.9 1012.8 1007.8 1005.9 1010.5 1016.3 1019.0 1022.6 1026.0 1026.0 DAY 30 9 2 1 5 3 27 15 22 16 21 28 MIN. QNH PRESSURE IN HPA 1016.7 1014.2 1011.2 1010.3 1002.9 1001.2 999.3 1004.2 1004.9 1011.3 1014.6 1017.5 999.3 DAY 27 5 23 10 26 18 4 3 1 3 12 5 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** PRESSURE AT HOUR 0900 UTC. MEAN QFE PRESSURE IN HPA 926.7 925.2 923.3 921.0 916.4 911.6 911.2 914.8 918.5 923.0 925.9 928.3 920.5 MAX. QFE PRESSURE IN HPA 930.0 928.8 929.1 927.0 920.3 915.7 914.4 917.9 923.1 926.0 929.1 931.3 931.3 DAY 29 9 1 1 1 2 31 15 22 23 20 28 MIN. QFE PRESSURE IN HPA 923.8 921.3 919.0 917.9 911.2 909.8 908.0 912.1 912.8 919.0 921.6 924.0 908.0 DAY 27 5 26 10 26 17 9 3 1 1 11 5 MEAN QNH PRESSURE IN HPA 1018.4 1016.8 1014.8 1012.3 1007.3 1002.1 1001.7 1005.6 1009.5 1014.4 1017.5 1020.1 1011.7 MAX. QNH PRESSURE IN HPA 1022.0 1020.7 1021.0 1018.7 1011.5 1006.5 1005.1 1008.9 1014.5 1017.7 1021.0 1023.4 1023.4 DAY 29 9 1 1 1 2 31 15 22 23 20 28 MIN. QNH PRESSURE IN HPA 1015.3 1012.6 1010.1 1008.9 1001.7 1000.2 998.2 1002.6 1003.4 1010.1 1012.9 1015.5 998.2 DAY 27 5 26 10 26 17 9 3 1 1 11 5 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** PRESSURE AT HOUR 1200 UTC. MEAN QFE PRESSURE IN HPA 924.9 923.2 921.0 918.9 914.5 910.0 909.5 912.7 916.6 921.0 924.2 926.7 918.6 MAX. QFE PRESSURE IN HPA 927.9 926.9 927.0 924.7 918.1 914.0 912.8 915.3 921.8 924.0 927.0 930.0 930.0 DAY 29 9 1 1 1 2 31 14 22 23 20 18 MIN. QFE PRESSURE IN HPA 922.2 919.0 917.0 916.0 909.9 907.6 906.0 910.1 911.0 916.5 920.0 922.8 906.0 DAY 27 5 25 13 26 17 9 3 1 2 11 5 MEAN QNH PRESSURE IN HPA 1016.5 1014.6 1012.3 1010.0 1005.3 1000.3 999.8 1003.3 1007.5 1012.3 1015.7 1018.4 1009.7 MAX. QNH PRESSURE IN HPA 1019.7 1018.6 1018.7 1016.3 1009.1 1004.7 1003.4 1006.1 1013.1 1015.5 1018.7 1022.0 1022.0 DAY 29 9 1 1 1 2 31 14 22 23 20 18 MIN. QNH PRESSURE IN HPA 1013.6 1010.1 1007.9 1006.9 1000.3 997.8 996.1 1000.5 1001.5 1007.4 1011.2 1014.2 996.1 DAY 27 5 25 13 26 17 9 3 1 2 11 5 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION 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 2001 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 1500 UTC. MEAN QFE PRESSURE IN HPA 925.5 923.7 921.1 919.0 914.4 909.7 909.2 912.5 916.7 921.1 924.9 927.3 918.7 MAX. QFE PRESSURE IN HPA 929.2 926.9 927.0 924.4 918.3 914.4 912.4 915.0 923.1 924.4 929.0 930.5 930.5 DAY 29 9 1 1 1 2 14 5 22 23 13 28 MIN. QFE PRESSURE IN HPA 922.2 920.0 915.8 916.0 909.7 907.1 906.0 910.1 911.0 917.0 920.2 923.3 906.0 DAY 27 4 25 13 26 17 9 3 1 1 11 5 MEAN QNH PRESSURE IN HPA 1017.1 1015.1 1012.3 1010.1 1005.1 1000.0 999.5 1003.1 1007.6 1012.4 1016.4 1019.1 1009.8 MAX. QNH PRESSURE IN HPA 1021.1 1018.6 1018.7 1015.9 1009.3 1005.1 1003.0 1005.8 1014.5 1015.9 1020.9 1022.5 1022.5 DAY 29 9 1 1 1 2 14 5 22 23 13 28 MIN. QNH PRESSURE IN HPA 1013.6 1011.2 1006.6 1006.9 1000.1 997.2 996.1 1000.5 1001.5 1007.9 1011.4 1014.7 996.1 DAY 27 4 25 13 26 17 9 3 1 1 11 5 MEAN QFF PRESSURE IN HPA 1017.5 1014.3 1009.5 1005.4 998.4 992.4 991.3 995.7 1001.1 1007.8 1014.5 1017.3 1005.5 MAX. QFF PRESSURE IN HPA 1023.3 1018.4 1017.4 1012.0 1003.8 998.3 995.3 998.6 1008.9 1011.3 1019.6 1021.4 1023.3 DAY 29 9 1 1 1 2 14 9 22 23 13 28 MIN. QFF PRESSURE IN HPA 1013.5 1009.7 1004.2 1000.7 993.6 989.2 987.4 992.5 993.4 1002.1 1009.3 1012.4 987.4 DAY 27 21 25 28 26 17 9 3 1 2 11 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 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 2002 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AIR TEMPERATURE (C) 12.7 15.7 21.2 26.2 33.8 36.4 37.6 36.8 33.0 28.3 20.4 14.5 26.4 MINIMUN AIR TEMPERATURE (C) 5.3 6.4 11.1 15.5 20.5 23.5 25.7 26.2 21.8 16.6 10.1 6.6 15.8 DAYS WITH MINIMUM TEMP. >=21 0 0 0 1 14 28 31 30 19 1 0 0 124 DAYS WITH MINIMUM TEMP. <=-4 0 0 0 0 0 0 0 0 0 0 0 0 0 DAYS WITH FREEZING MIN.<= 0 0 0 0 0 0 0 0 0 0 0 0 1 1 TEMPERATURE RECORDS LOWEST(C) 0.2 0.4 6.4 10.6 15.4 18.4 22.8 20.2 18.4 12.0 4.0 -1.8 -1.8 DAY 28 6 2 6 7 1 2 29 21 28 24 31 MAXIMUM AIR TEMPERATURE (C) 17.9 21.7 27.0 31.6 39.4 41.8 43.3 42.5 39.4 34.8 26.4 19.8 32.1 DAYS WITH MAXIMUM TEMP. >=30 0 0 5 21 31 30 31 31 30 31 0 0 210 DAYS WITH MAXIMUM TEMP. <= 0 0 0 0 0 0 0 0 0 0 0 0 0 0 TEMPERATURE RECORDS HIGHEST(C) 23.0 27.0 31.6 39.4 42.6 44.4 45.8 45.0 42.2 37.8 29.8 24.6 45.8 DAY 5 25 27 28 24 16 5 5 4 5 13 9 DIF. BETWEEN (MAX.-MIN.) (C) 12.6 15.3 15.9 16.1 18.9 18.3 17.6 16.3 17.6 18.2 16.3 13.2 16.3 MEAN DAILY TEMP. (MDT) (C) 11.6 14.1 19.0 23.5 29.9 32.7 34.5 34.4 30.6 25.7 18.3 13.2 24.0 COOLING DEG. DAYS(BASE 21 0C) 0.0 0.0 5.1 86.8 277.4 349.7 417.7 414.7 288.8 146.3 7.6 0.0 1994.1 HEATING DEG. DAYS(BASE 18 0C) 198.6 111.7 8.6 0.0 0.0 0.0 0.0 0.0 0.0 0.0 34.0 148.9 501.8 DEWPOINT (MEAN C) 4.6 4.8 5.9 8.3 7.3 11.0 12.2 13.9 11.6 7.5 4.4 6.7 8.2 MIXING RATIO (G/KG) 6.05 6.25 6.55 7.73 7.29 9.47 10.05 11.52 9.81 7.22 5.95 6.98 7.91 VAPOUR PRESSURE (HPA) 8.92 9.19 9.61 11.29 10.61 13.67 14.51 16.57 14.25 10.58 8.76 10.27 11.52 SATURATION DEF. (HPA) 6.38 9.73 16.83 25.04 44.77 49.92 53.27 48.04 38.81 30.18 16.62 7.08 28.89 RELATIVE HUMIDITY (MEAN %) 62 53 41 35 22 24 24 29 31 29 37 63 38 RELATIVE HUMIDITY (MAX. %) 87 78 68 57 37 38 39 49 52 49 55 84 58 RELATIVE HUMIDITY (MIN. %) 43 35 26 23 14 16 15 18 18 18 25 45 25 RELATIVE HUMIDITY (MEAN% 03UTC) 86 78 67 57 37 38 39 49 51 49 54 84 57 RELATIVE HUMIDITY (MEAN% 09UTC) 51 43 31 27 16 19 18 22 23 22 30 53 30 RELATIVE HUMIDITY (MEAN% 15UTC) 58 44 32 28 17 19 19 21 23 24 34 62 32 RH=0 => RELATIVE HUMIDITY < 0.5% AMOUNT OF PRECIPITATION MM. 67.7 8.8 12.2 8.2 0.0 0.0 0.0 5.0 6.0 0.0 0.0 33.3 141.2 DAYS WITH PRECIPITATION >=10 3 0 0 0 0 0 0 0 0 0 0 2 5 DAYS WITH PRECIPITATION >= 5 3 1 1 1 0 0 0 1 0 0 0 3 10 DAYS WITH PRECIPITATION >= 1 6 3 4 1 0 0 0 1 2 0 0 5 22 DAYS WITH PRECIPITATION 7 6 5 2 0 0 0 1 2 0 0 8 31 GREATEST DAILY PRECIPITATION 30.4 5.0 6.0 8.0 0.0 0.0 0.0 5.0 3.0 0.0 0.0 12.4 30.4 DAY 12 20 22 12 ** ** ** 29 29 ** ** 13 DAY WITH THUNDER STORM 1 1 0 0 0 0 0 1 1 2 0 1 7 DAYS WITH SNOW OR SLEET 0 0 0 0 0 0 0 0 0 0 0 0 0 DAYS WITH DUST 2 0 4 10 8 7 5 1 6 2 0 5 50 WIND DIRECTION (PREVAILING) 270 225 270 270 270 225 270 270 225 225 225 225 270 PREVAILING WIND SPEED(KNOTS) 9.4 8.2 9.9 10.5 10.7 10.8 13.6 10.7 10.2 10.2 9.7 8.8 10.3 PREVAILING WIND PERCENT 11.6 12.1 19.4 28.7 31.6 18.7 14.8 16.8 20.7 8.4 8.0 9.0 15.1 CALMS PERCENT OF WIND 67.7 59.3 56.1 43.3 38.7 38.0 45.2 41.3 42.7 65.2 66.7 76.8 53.4 NO. OF WIND OBSERVATION 155 140 155 150 155 150 155 155 150 155 150 155 1825 VECTOR WIND DIRECTION (MEAN) 267 219 247 249 265 213 214 214 197 235 243 245 235 VECTOR WIND MAGNITUDE(KNOTS) 0.5 1.1 2.1 4.2 4.7 2.8 2.5 1.0 2.6 1.3 0.2 1.5 1.9 WIND STEADINESES (MEAN %) 17.9 32.4 45.7 68.9 72.3 44.4 39.7 16.9 48.1 40.6 6.3 75.0 41.3 WIND SPEED (MEAN KNOTS) 2.8 3.4 4.6 6.1 6.5 6.3 6.3 5.9 5.4 3.2 3.2 2.0 4.6 FASTEST WIND DIRECTION 210 190 140 210 240 150 90 270 10 240 50 240 10 FASTEST WIND SPEED (KNOTS) 19 19 25 27 25 21 35 25 39 23 19 17 39 DAY 2 20 18 3 5 26 21 14 2 1 19 25 DAYS WITH SKY CLEAR (0-2)/8 19 15 17 19 27 30 31 28 29 30 26 20 291 DAYS WITH P.CLOUDY (3-6)/8 5 9 10 8 3 0 0 3 1 1 3 8 51 DAYS WITH CLOUDY (7-8)/8 7 4 4 3 1 0 0 0 0 0 1 3 23 DAYS WITH VISIBILITY =< 2 KM 7 0 0 0 0 0 0 0 0 0 0 2 9 DURATION OF SUNSHINE HOURS 238.6 231.5 264.0 301.8 354.0 359.0 360.8 330.9 311.3 304.5 275.8 231.9 3564.1 ======================================================================================================================= 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 2002 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL MEAN QFE PRESSURE IN HPA 926.8 926.4 923.3 920.5 917.2 913.5 912.8 912.7 918.7 922.7 925.6 926.4 920.6 MAX. QFE PRESSURE IN HPA 932.0 933.4 931.4 927.6 922.7 918.7 916.1 919.9 925.0 927.3 930.2 933.2 933.4 DAY-HOUR 26- 6 2- 6 12- 6 2- 6 10- 6 3- 6 31- 6 29- 6 21- 6 26- 6 19- 6 14- 6 MIN. QFE PRESSURE IN HPA 921.8 921.0 918.6 914.5 912.0 908.0 909.0 907.8 913.6 918.0 920.1 920.0 907.8 DAY-HOUR 22-12 25-12 21-12 3-12 28-15 20-15 22-15 9-15 10-12 12-12 7-12 22-12 MEAN QNH PRESSURE IN HPA 1018.6 1018.1 1014.8 1011.7 1008.2 1004.1 1003.4 1003.3 1009.7 1014.1 1017.2 1018.1 1011.8 MAX. QNH PRESSURE IN HPA 1024.1 1025.6 1023.5 1019.4 1014.1 1009.8 1007.0 1011.1 1016.6 1019.1 1022.2 1025.4 1025.6 DAY-HOUR 26- 6 2- 6 12- 6 2- 6 10- 6 3- 6 31- 6 29- 6 21- 6 26- 6 19- 6 14- 6 MIN. QNH PRESSURE IN HPA 1013.1 1012.3 1009.7 1005.2 1002.5 998.2 999.3 998.0 1004.3 1009.0 1011.3 1011.2 998.0 DAY-HOUR 22-12 25-12 21-12 3-12 28-15 20-15 22-15 9-15 10-12 12-12 7-12 22-12 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 926.9 926.6 923.6 921.0 917.9 914.1 913.6 913.7 919.4 923.4 926.0 926.4 921.0 MAX. QFE PRESSURE IN HPA 930.1 931.7 929.8 926.8 921.2 917.6 916.0 918.9 924.0 926.0 929.2 931.7 931.7 DAY 27 2 11 2 16 29 3 30 21 10 19 14 MIN. QFE PRESSURE IN HPA 922.0 921.4 920.1 916.0 914.4 910.4 911.0 910.3 916.1 920.4 921.4 921.0 910.3 DAY 22 25 26 4 28 21 22 7 6 13 7 22 MEAN QNH PRESSURE IN HPA 1018.6 1018.3 1015.1 1012.2 1008.9 1004.8 1004.3 1004.4 1010.6 1014.9 1017.6 1018.1 1012.3 MAX. QNH PRESSURE IN HPA 1022.1 1023.8 1021.8 1018.5 1012.5 1008.6 1006.9 1010.0 1015.5 1017.7 1021.1 1023.8 1023.8 DAY 27 2 11 2 16 29 3 30 21 10 19 14 MIN. QNH PRESSURE IN HPA 1013.3 1012.7 1011.3 1006.9 1005.1 1000.8 1001.5 1000.7 1007.0 1011.6 1012.7 1012.3 1000.7 DAY 22 25 26 4 28 21 22 7 6 13 7 22 MEAN QFF PRESSURE IN HPA 1018.5 1017.4 1012.4 1008.0 1002.5 997.4 996.4 996.5 1004.2 1010.3 1015.4 1017.4 1008.0 MAX. QFF PRESSURE IN HPA 1023.2 1024.2 1019.7 1014.3 1006.7 1001.5 999.2 1002.3 1010.3 1014.0 1019.6 1023.1 1024.2 DAY 27 2 11 2 16 29 3 30 21 26 29 14 MIN. QFF PRESSURE IN HPA 1012.7 1010.2 1007.4 1003.1 997.9 993.2 993.6 992.5 999.8 1006.5 1008.9 1010.4 992.5 DAY 12 25 29 4 28 20 22 14 6 13 7 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 2002 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 0600 UTC. MEAN QFE PRESSURE IN HPA 928.5 928.3 925.1 922.2 918.8 914.9 914.2 914.5 920.5 924.6 927.5 928.2 922.3 MAX. QFE PRESSURE IN HPA 932.0 933.4 931.4 927.6 922.7 918.7 916.1 919.9 925.0 927.3 930.2 933.2 933.4 DAY 26 2 12 2 10 3 31 29 21 26 19 14 MIN. QFE PRESSURE IN HPA 923.8 923.8 922.0 918.0 915.1 911.0 912.1 911.2 917.0 922.1 923.6 923.0 911.0 DAY 22 25 22 4 28 22 22 7 10 13 7 22 MEAN QNH PRESSURE IN HPA 1020.4 1020.1 1016.7 1013.5 1009.9 1005.6 1004.9 1005.2 1011.7 1016.1 1019.2 1020.0 1013.6 MAX. QNH PRESSURE IN HPA 1024.1 1025.6 1023.5 1019.4 1014.1 1009.8 1007.0 1011.1 1016.6 1019.1 1022.2 1025.4 1025.6 DAY 26 2 12 2 10 3 31 29 21 26 19 14 MIN. QNH PRESSURE IN HPA 1015.3 1015.3 1013.3 1009.0 1005.9 1001.5 1002.6 1001.7 1007.9 1013.4 1015.1 1014.4 1001.5 DAY 22 25 22 4 28 22 22 7 10 13 7 22 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** PRESSURE AT HOUR 0900 UTC. MEAN QFE PRESSURE IN HPA 927.1 927.0 923.9 921.2 917.8 913.9 913.3 913.2 919.2 923.0 925.8 926.8 921.0 MAX. QFE PRESSURE IN HPA 931.0 932.0 930.4 927.0 921.6 917.7 915.0 918.0 923.4 925.9 929.0 932.0 932.0 DAY 26 1 11 1 10 3 3 31 21 26 19 14 MIN. QFE PRESSURE IN HPA 923.0 922.6 920.3 917.2 914.0 910.0 911.0 910.0 915.8 920.1 922.4 921.0 910.0 DAY 22 25 22 3 28 22 22 9 10 12 7 22 MEAN QNH PRESSURE IN HPA 1018.8 1018.7 1015.4 1012.5 1008.8 1004.6 1003.9 1003.9 1010.3 1014.4 1017.5 1018.5 1012.3 MAX. QNH PRESSURE IN HPA 1023.1 1024.1 1022.4 1018.7 1012.9 1008.7 1005.8 1009.0 1014.8 1017.5 1020.9 1024.1 1024.1 DAY 26 1 11 1 10 3 3 31 21 26 19 14 MIN. QNH PRESSURE IN HPA 1014.4 1014.0 1011.5 1008.2 1004.7 1000.4 1001.5 1000.4 1006.6 1011.3 1013.8 1012.3 1000.4 DAY 22 25 22 3 28 22 22 9 10 12 7 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 925.6 925.0 922.0 919.2 916.0 912.4 911.7 911.2 917.1 921.1 924.2 925.1 919.2 MAX. QFE PRESSURE IN HPA 929.0 930.0 928.6 925.8 919.0 916.0 913.0 916.2 921.3 924.0 927.7 930.3 930.3 DAY 26 1 11 1 10 29 3 29 21 26 18 30 MIN. QFE PRESSURE IN HPA 921.8 921.0 918.6 914.5 912.8 908.8 909.5 908.2 913.6 918.0 920.1 920.0 908.2 DAY 22 25 21 3 28 22 7 6 10 12 7 22 MEAN QNH PRESSURE IN HPA 1017.2 1016.5 1013.3 1010.3 1006.9 1003.0 1002.2 1001.7 1008.1 1012.4 1015.7 1016.7 1010.3 MAX. QNH PRESSURE IN HPA 1020.9 1022.0 1020.5 1017.4 1010.1 1006.9 1003.6 1007.1 1012.6 1015.5 1019.5 1022.3 1022.3 DAY 26 1 11 1 10 29 3 29 21 26 18 30 MIN. QNH PRESSURE IN HPA 1013.1 1012.3 1009.7 1005.2 1003.4 999.1 999.8 998.4 1004.3 1009.0 1011.3 1011.2 998.4 DAY 22 25 21 3 28 22 7 6 10 12 7 22 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 2002 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 1500 UTC. MEAN QFE PRESSURE IN HPA 926.2 925.4 922.1 919.1 915.6 911.9 911.3 911.0 917.1 921.5 924.5 925.6 919.3 MAX. QFE PRESSURE IN HPA 930.0 930.6 928.1 925.6 919.0 915.3 913.0 915.8 921.5 925.0 927.2 931.1 931.1 DAY 26 1 12 1 10 28 3 29 20 31 18 13 MIN. QFE PRESSURE IN HPA 922.1 921.4 918.6 914.5 912.0 908.0 909.0 907.8 913.7 918.0 921.0 921.2 907.8 DAY 22 25 21 3 28 20 22 9 10 12 7 22 MEAN QNH PRESSURE IN HPA 1017.8 1017.0 1013.5 1010.2 1006.4 1002.5 1001.7 1001.5 1008.1 1012.8 1016.1 1017.3 1010.4 MAX. QNH PRESSURE IN HPA 1022.0 1022.6 1019.9 1017.2 1010.1 1006.1 1003.6 1006.6 1012.8 1016.6 1019.0 1023.2 1023.2 DAY 26 1 12 1 10 28 3 29 20 31 18 13 MIN. QNH PRESSURE IN HPA 1013.4 1012.7 1009.7 1005.2 1002.5 998.2 999.3 998.0 1004.4 1009.0 1012.3 1012.5 998.0 DAY 22 25 21 3 28 20 22 9 10 12 7 22 MEAN QFF PRESSURE IN HPA 1017.7 1016.0 1010.7 1005.9 1000.0 995.0 993.8 993.7 1001.8 1008.2 1013.8 1016.5 1006.1 MAX. QFF PRESSURE IN HPA 1022.8 1023.0 1017.8 1013.6 1004.2 999.2 996.0 999.2 1007.4 1013.2 1017.9 1022.6 1023.0 DAY 26 1 12 1 9 28 10 29 20 31 29 30 MIN. QFF PRESSURE IN HPA 1012.8 1010.1 1006.3 1000.7 995.2 989.9 991.1 989.6 998.0 1003.8 1008.5 1011.1 989.6 DAY 11 25 26 30 28 20 22 9 8 12 7 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 2003 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AIR TEMPERATURE (C) 12.9 16.4 19.9 26.0 32.2 37.3 36.8 36.6 33.2 27.9 19.7 15.2 26.2 MINIMUN AIR TEMPERATURE (C) 4.4 8.7 10.3 15.1 20.2 23.9 28.1 26.5 21.8 16.2 8.7 6.0 15.8 DAYS WITH MINIMUM TEMP. >=21 0 0 0 0 14 30 31 31 21 0 0 0 127 DAYS WITH MINIMUM TEMP. <=-4 0 0 0 0 0 0 0 0 0 0 0 0 0 DAYS WITH FREEZING MIN.<= 0 0 0 0 0 0 0 0 0 0 0 0 0 0 TEMPERATURE RECORDS LOWEST(C) 1.0 2.4 2.6 11.0 16.0 21.4 23.6 23.6 18.2 11.8 2.2 0.4 0.4 DAY 18 2 3 15 1 8 2 30 20 29 27 15 MAXIMUM AIR TEMPERATURE (C) 19.0 21.7 25.6 32.1 37.5 43.0 42.1 42.2 39.1 34.1 26.2 21.0 32.0 DAYS WITH MAXIMUM TEMP. >=30 0 0 3 23 31 30 31 31 30 31 2 0 212 DAYS WITH MAXIMUM TEMP. <= 0 0 0 0 0 0 0 0 0 0 0 0 0 0 TEMPERATURE RECORDS HIGHEST(C) 24.0 25.8 31.6 36.8 40.2 45.0 45.6 43.4 41.4 37.4 32.0 25.4 45.6 DAY 9 13 25 9 22 24 4 9 3 1 1 6 DIF. BETWEEN (MAX.-MIN.) (C) 14.6 13.0 15.3 17.0 17.3 19.1 14.0 15.7 17.3 17.9 17.5 15.0 16.2 MEAN DAILY TEMP. (MDT) (C) 11.7 15.2 18.0 23.6 28.8 33.5 35.1 34.3 30.5 25.1 17.4 13.5 23.9 COOLING DEG. DAYS(BASE 21 0C) 0.0 0.0 5.8 82.5 242.8 374.2 437.9 413.8 284.3 128.3 2.7 0.0 1972.3 HEATING DEG. DAYS(BASE 18 0C) 194.9 82.9 36.8 0.0 0.0 0.0 0.0 0.0 0.0 0.0 43.7 139.2 497.5 DEWPOINT (MEAN C) 4.8 6.3 6.1 9.7 11.2 12.1 18.0 17.2 13.2 8.5 2.0 5.4 9.5 MIXING RATIO (G/KG) 6.00 6.85 6.84 8.45 9.33 10.02 14.77 13.94 10.74 7.79 5.05 6.31 8.84 VAPOUR PRESSURE (HPA) 8.84 10.05 10.03 12.35 13.57 14.45 21.10 20.01 15.55 11.42 7.45 9.31 12.84 SATURATION DEF. (HPA) 6.86 9.33 14.57 23.47 36.55 52.17 42.96 43.36 37.71 28.31 17.11 8.87 26.77 RELATIVE HUMIDITY (MEAN %) 62 56 46 41 29 24 36 35 32 32 33 56 40 RELATIVE HUMIDITY (MAX. %) 88 80 76 69 44 38 56 55 49 53 51 83 62 RELATIVE HUMIDITY (MIN. %) 41 38 29 25 22 17 24 23 22 20 22 37 27 RELATIVE HUMIDITY (MEAN% 03UTC) 86 80 76 69 44 38 55 55 49 53 51 83 62 RELATIVE HUMIDITY (MEAN% 09UTC) 52 46 35 30 24 19 29 28 25 25 26 46 32 RELATIVE HUMIDITY (MEAN% 15UTC) 56 50 38 34 26 20 29 28 28 25 29 48 34 RH=0 => RELATIVE HUMIDITY < 0.5% AMOUNT OF PRECIPITATION MM. 22.6 55.9 63.3 19.6 0.0 0.0 8.2 3.2 0.0 0.0 0.0 19.3 192.1 DAYS WITH PRECIPITATION >=10 0 3 2 1 0 0 0 0 0 0 0 1 7 DAYS WITH PRECIPITATION >= 5 1 5 3 1 0 0 0 0 0 0 0 1 11 DAYS WITH PRECIPITATION >= 1 6 6 4 5 0 0 3 1 0 0 0 3 28 DAYS WITH PRECIPITATION 9 8 5 8 0 0 4 2 0 0 0 4 40 GREATEST DAILY PRECIPITATION 8.7 16.0 30.0 11.0 0.0 0.0 4.0 3.0 0.0 0.0 0.0 12.0 30.0 DAY 17 24 27 17 ** ** 11 3 ** ** ** 7 DAY WITH THUNDER STORM 0 2 2 3 0 0 3 2 0 1 0 0 13 DAYS WITH SNOW OR SLEET 0 0 0 0 0 0 0 0 0 0 0 0 0 DAYS WITH DUST 1 1 7 3 25 15 26 12 4 2 5 0 101 WIND DIRECTION (PREVAILING) 225 270 270 270 270 270 90 225 225 225 270 90 270 PREVAILING WIND SPEED(KNOTS) 6.6 10.7 9.9 11.3 13.2 12.1 12.5 12.4 10.6 10.2 11.1 11.2 11.2 PREVAILING WIND PERCENT 9.0 15.7 10.3 23.3 31.6 20.0 16.8 14.2 16.0 12.9 16.0 10.3 14.7 CALMS PERCENT OF WIND 70.3 54.3 56.8 54.0 43.9 44.7 32.9 50.3 50.7 61.3 58.0 74.2 54.3 NO. OF WIND OBSERVATION 155 140 155 150 155 150 155 155 150 155 150 155 1825 VECTOR WIND DIRECTION (MEAN) 151 239 205 254 272 237 174 206 239 225 301 81 241 VECTOR WIND MAGNITUDE(KNOTS) 0.6 0.7 0.9 3.3 5.6 3.9 1.5 1.8 2.7 1.2 1.0 0.7 1.6 WIND STEADINESES (MEAN %) 26.1 14.3 18.0 70.2 80.0 60.9 19.5 34.6 51.9 30.8 21.7 26.9 32.0 WIND SPEED (MEAN KNOTS) 2.3 4.9 5.0 4.7 7.0 6.4 7.7 5.2 5.2 3.9 4.6 2.6 5.0 FASTEST WIND DIRECTION 280 240 190 270 300 290 90 350 90 90 270 80 270 FASTEST WIND SPEED (KNOTS) 23 25 23 27 27 21 27 27 19 19 23 17 27 DAY 30 17 13 16 23 1 24 16 1 2 13 6 DAYS WITH SKY CLEAR (0-2)/8 16 11 17 19 28 28 20 30 29 31 23 18 270 DAYS WITH P.CLOUDY (3-6)/8 11 11 10 5 3 2 11 1 1 0 6 10 71 DAYS WITH CLOUDY (7-8)/8 4 6 4 6 0 0 0 0 0 0 1 3 24 DAYS WITH VISIBILITY =< 2 KM 2 1 1 1 2 0 0 0 0 0 0 3 10 DURATION OF SUNSHINE HOURS 228.5 204.5 261.1 263.3 341.6 350.9 291.0 331.4 311.3 311.1 269.2 245.6 3409.5 ======================================================================================================================= 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 2003 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL MEAN QFE PRESSURE IN HPA 926.8 923.9 923.4 921.9 918.8 912.7 910.5 913.5 917.7 923.5 926.0 928.0 920.6 MAX. QFE PRESSURE IN HPA 933.1 930.1 932.2 928.4 923.9 920.8 916.8 917.2 923.4 930.0 934.7 933.2 934.7 DAY-HOUR 12- 6 3- 6 3- 6 8- 6 10- 6 1- 6 3- 6 17- 6 27- 6 29- 6 25- 6 14- 6 MIN. QFE PRESSURE IN HPA 920.4 916.7 915.9 917.5 914.0 906.1 905.7 909.5 912.0 917.6 920.8 922.2 905.7 DAY-HOUR 24-15 17-15 13-12 13-12 18-15 30-15 25-15 2-15 3-15 6-12 1-12 6-12 MEAN QNH PRESSURE IN HPA 1018.5 1015.4 1014.8 1013.2 1009.9 1003.3 1000.9 1004.1 1008.7 1015.0 1017.6 1019.8 1011.8 MAX. QNH PRESSURE IN HPA 1025.3 1022.1 1024.4 1020.2 1015.4 1012.0 1007.7 1008.2 1014.8 1022.0 1027.0 1025.4 1027.0 DAY-HOUR 12- 6 3- 6 3- 6 8- 6 10- 6 1- 6 3- 6 17- 6 27- 6 29- 6 25- 6 14- 6 MIN. QNH PRESSURE IN HPA 1011.6 1007.6 1006.8 1008.5 1004.7 996.2 995.7 999.8 1002.5 1008.6 1012.0 1013.6 995.7 DAY-HOUR 24-15 17-15 13-12 13-12 18-15 30-15 25-15 2-15 3-15 6-12 1-12 6-12 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY-HOUR **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY-HOUR **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** PRESSURE AT HOUR 0000 UTC. MEAN QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** PRESSURE AT HOUR 0300 UTC. MEAN QFE PRESSURE IN HPA 926.7 924.1 923.8 922.1 919.6 913.8 911.7 914.7 918.6 924.2 926.3 928.1 921.1 MAX. QFE PRESSURE IN HPA 931.1 928.0 930.7 928.0 923.0 920.5 916.2 916.7 922.8 928.8 932.2 931.7 932.2 DAY 12 6 3 8 10 1 3 5 27 29 25 30 MIN. QFE PRESSURE IN HPA 922.0 920.0 917.8 918.0 916.4 909.0 909.0 912.5 915.2 919.8 922.7 925.0 909.0 DAY 25 16 13 14 29 21 1 21 1 6 2 4 MEAN QNH PRESSURE IN HPA 1018.5 1015.6 1015.3 1013.5 1010.7 1004.4 1002.2 1005.4 1009.7 1015.7 1018.0 1019.9 1012.4 MAX. QNH PRESSURE IN HPA 1023.2 1019.8 1022.7 1019.8 1014.4 1011.7 1007.1 1007.6 1014.2 1020.7 1024.4 1023.8 1024.4 DAY 12 6 3 8 10 1 3 5 27 29 25 30 MIN. QNH PRESSURE IN HPA 1013.3 1011.2 1008.8 1009.0 1007.3 999.3 999.3 1003.1 1006.0 1011.0 1014.1 1016.6 999.3 DAY 25 16 13 14 29 21 1 21 1 6 2 4 MEAN QFF PRESSURE IN HPA 1018.4 1014.2 1012.9 1009.3 1004.6 996.9 993.9 997.5 1003.3 1011.2 1016.2 1019.2 1008.1 MAX. QFF PRESSURE IN HPA 1023.4 1019.8 1023.0 1015.3 1008.9 1004.8 999.9 1000.3 1008.5 1017.7 1023.9 1024.4 1024.4 DAY 7 1 3 8 3 1 3 17 27 29 25 14 MIN. QFF PRESSURE IN HPA 1011.9 1008.7 1003.9 1004.3 1000.2 991.6 991.1 994.9 998.5 1005.6 1010.9 1015.5 991.1 DAY 29 15 13 14 29 30 30 21 1 6 2 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 2003 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 0600 UTC. MEAN QFE PRESSURE IN HPA 928.6 925.6 925.0 923.4 920.4 914.2 912.1 915.2 919.5 925.4 927.8 929.8 922.3 MAX. QFE PRESSURE IN HPA 933.1 930.1 932.2 928.4 923.9 920.8 916.8 917.2 923.4 930.0 934.7 933.2 934.7 DAY 12 3 3 8 10 1 3 17 27 29 25 14 MIN. QFE PRESSURE IN HPA 923.2 921.0 918.5 920.1 916.7 909.3 909.3 913.0 915.5 920.6 924.1 925.3 909.3 DAY 29 19 13 13 29 21 25 1 6 6 2 6 MEAN QNH PRESSURE IN HPA 1020.5 1017.2 1016.6 1014.8 1011.6 1004.9 1002.6 1006.0 1010.7 1017.0 1019.6 1021.7 1013.6 MAX. QNH PRESSURE IN HPA 1025.3 1022.1 1024.4 1020.2 1015.4 1012.0 1007.7 1008.2 1014.8 1022.0 1027.0 1025.4 1027.0 DAY 12 3 3 8 10 1 3 17 27 29 25 14 MIN. QNH PRESSURE IN HPA 1014.6 1012.3 1009.6 1011.3 1007.6 999.6 999.6 1003.6 1006.3 1011.8 1015.6 1016.9 999.6 DAY 29 19 13 13 29 21 25 1 6 6 2 6 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** PRESSURE AT HOUR 0900 UTC. MEAN QFE PRESSURE IN HPA 927.1 924.4 924.0 922.5 919.4 913.2 910.9 914.0 918.2 923.9 926.3 928.3 921.0 MAX. QFE PRESSURE IN HPA 932.2 929.9 930.9 928.0 922.8 920.0 914.9 916.2 922.4 928.0 932.6 932.4 932.6 DAY 7 3 3 7 11 1 3 5 27 29 25 14 MIN. QFE PRESSURE IN HPA 922.0 919.8 917.7 918.7 916.4 908.4 908.5 911.8 914.8 918.9 922.6 924.3 908.4 DAY 25 17 13 13 18 30 25 1 6 6 2 6 MEAN QNH PRESSURE IN HPA 1018.8 1015.9 1015.5 1013.9 1010.5 1003.8 1001.4 1004.7 1009.2 1015.4 1017.9 1020.1 1012.3 MAX. QNH PRESSURE IN HPA 1024.4 1021.9 1022.9 1019.8 1014.2 1011.2 1005.7 1007.1 1013.8 1019.8 1024.8 1024.6 1024.8 DAY 7 3 3 7 11 1 3 5 27 29 25 14 MIN. QNH PRESSURE IN HPA 1013.3 1011.0 1008.7 1009.8 1007.3 998.7 998.8 1002.3 1005.6 1010.0 1014.0 1015.8 998.7 DAY 25 17 13 13 18 30 25 1 6 6 2 6 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** PRESSURE AT HOUR 1200 UTC. MEAN QFE PRESSURE IN HPA 925.5 922.5 921.9 920.9 917.6 911.4 909.1 912.0 916.2 922.1 924.6 926.7 919.2 MAX. QFE PRESSURE IN HPA 930.2 927.2 929.3 926.5 921.0 918.3 913.0 914.2 920.2 926.4 932.0 930.0 932.0 DAY 6 3 3 7 3 1 3 17 26 29 25 14 MIN. QFE PRESSURE IN HPA 920.5 917.2 915.9 917.5 914.6 906.6 906.4 910.0 912.2 917.6 920.8 922.2 906.4 DAY 24 17 13 13 18 30 25 1 6 6 1 6 MEAN QNH PRESSURE IN HPA 1017.1 1013.8 1013.3 1012.1 1008.6 1001.9 999.4 1002.5 1007.1 1013.4 1016.2 1018.4 1010.3 MAX. QNH PRESSURE IN HPA 1022.2 1019.0 1021.2 1018.2 1012.3 1009.3 1003.6 1004.9 1011.4 1018.1 1024.1 1022.0 1024.1 DAY 6 3 3 7 3 1 3 17 26 29 25 14 MIN. QNH PRESSURE IN HPA 1011.7 1008.2 1006.8 1008.5 1005.3 996.7 996.5 1000.4 1002.8 1008.6 1012.0 1013.6 996.5 DAY 24 17 13 13 18 30 25 1 6 6 1 6 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION 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 2003 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 1500 UTC. MEAN QFE PRESSURE IN HPA 926.0 922.9 922.1 920.6 917.2 910.9 908.7 911.5 916.0 922.3 925.0 927.3 919.2 MAX. QFE PRESSURE IN HPA 930.8 927.7 929.3 926.5 920.2 917.7 912.2 914.5 920.4 926.1 932.3 931.4 932.3 DAY 6 3 3 7 10 1 3 17 26 29 25 29 MIN. QFE PRESSURE IN HPA 920.4 916.7 917.5 917.9 914.0 906.1 905.7 909.5 912.0 918.0 920.8 923.8 905.7 DAY 24 17 12 13 18 30 25 2 3 6 1 6 MEAN QNH PRESSURE IN HPA 1017.6 1014.3 1013.4 1011.8 1008.1 1001.4 999.0 1002.0 1006.8 1013.6 1016.6 1019.1 1010.3 MAX. QNH PRESSURE IN HPA 1022.8 1019.5 1021.2 1018.2 1011.4 1008.7 1002.8 1005.2 1011.6 1017.8 1024.5 1023.5 1024.5 DAY 6 3 3 7 10 1 3 17 26 29 25 29 MIN. QNH PRESSURE IN HPA 1011.6 1007.6 1008.5 1008.9 1004.7 996.2 995.7 999.8 1002.5 1009.0 1012.0 1015.3 995.7 DAY 24 17 12 13 18 30 25 2 3 6 1 6 MEAN QFF PRESSURE IN HPA 1017.5 1012.8 1011.0 1007.6 1001.8 993.7 990.8 994.1 1000.3 1009.1 1014.7 1018.3 1006.0 MAX. QFF PRESSURE IN HPA 1022.9 1019.2 1021.3 1014.0 1006.2 1001.5 995.4 997.4 1005.5 1014.6 1024.3 1024.1 1024.3 DAY 6 3 3 7 3 1 22 16 26 29 25 14 MIN. QFF PRESSURE IN HPA 1010.0 1006.8 1004.5 1003.5 998.0 988.6 987.2 991.3 995.0 1003.7 1008.4 1012.6 987.2 DAY 24 17 13 10 18 30 25 2 3 6 1 6 PRESSURE AT HOUR 1800 UTC. MEAN QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** PRESSURE AT HOUR 2100 UTC. MEAN QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION 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 2004 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AIR TEMPERATURE (C) 14.3 17.7 22.8 26.3 32.7 35.9 37.1 36.6 32.4 27.8 21.2 13.8 26.5 MINIMUN AIR TEMPERATURE (C) 7.0 7.6 11.6 15.7 20.1 22.7 26.1 26.4 21.6 15.8 11.0 6.9 16.0 DAYS WITH MINIMUM TEMP. >=21 0 0 1 0 10 28 31 31 18 0 0 0 119 DAYS WITH MINIMUM TEMP. <=-4 0 0 0 0 0 0 0 0 0 0 0 0 0 DAYS WITH FREEZING MIN.<= 0 0 0 0 0 0 0 0 0 0 0 0 0 0 TEMPERATURE RECORDS LOWEST(C) 1.2 0.4 5.4 10.6 16.4 19.6 21.2 23.0 14.8 13.0 4.2 0.4 0.4 DAY 30 10 17 3 7 1 20 27 30 30 30 30 MAXIMUM AIR TEMPERATURE (C) 19.3 24.2 28.9 31.8 38.4 41.7 42.7 42.7 38.6 34.3 27.7 18.8 32.4 DAYS WITH MAXIMUM TEMP. >=30 0 0 14 23 31 30 31 31 30 30 6 0 226 DAYS WITH MAXIMUM TEMP. <= 0 0 0 0 0 0 0 0 0 0 0 0 0 0 TEMPERATURE RECORDS HIGHEST(C) 22.8 28.6 33.6 36.6 42.0 43.8 45.4 45.6 41.8 37.4 30.2 23.8 45.6 DAY 7 24 9 30 22 27 6 12 11 7 8 1 DIF. BETWEEN (MAX.-MIN.) (C) 12.3 16.6 17.3 16.1 18.3 19.0 16.6 16.3 17.0 18.5 16.7 11.9 16.4 MEAN DAILY TEMP. (MDT) (C) 13.2 15.9 20.2 23.7 29.2 32.2 34.4 34.5 30.1 25.0 19.3 12.8 24.2 COOLING DEG. DAYS(BASE 21 0C) 0.0 0.0 25.9 83.2 255.2 335.9 414.7 419.0 271.7 125.3 0.8 0.0 1931.7 HEATING DEG. DAYS(BASE 18 0C) 149.0 64.3 10.1 0.0 0.0 0.0 0.0 0.0 0.0 0.0 12.5 160.8 396.7 DEWPOINT (MEAN C) 6.6 2.7 4.0 7.0 8.1 10.5 15.3 16.9 10.6 6.8 6.2 5.5 8.3 MIXING RATIO (G/KG) 6.90 5.20 5.74 7.06 7.57 8.96 12.49 13.88 9.17 6.88 6.59 6.44 8.07 VAPOUR PRESSURE (HPA) 10.14 7.67 8.45 10.34 11.03 12.96 17.94 19.90 13.33 10.11 9.70 9.48 11.75 SATURATION DEF. (HPA) 6.77 13.89 21.17 25.60 40.91 48.96 47.64 43.84 37.69 29.37 16.95 6.89 28.31 RELATIVE HUMIDITY (MEAN %) 63 41 33 32 24 23 30 35 29 29 41 62 37 RELATIVE HUMIDITY (MAX. %) 87 69 53 52 38 38 46 57 50 48 66 85 57 RELATIVE HUMIDITY (MIN. %) 44 24 21 22 16 16 20 20 15 17 24 42 23 RELATIVE HUMIDITY (MEAN% 03UTC) 87 68 52 51 38 38 46 57 49 48 65 84 57 RELATIVE HUMIDITY (MEAN% 09UTC) 54 32 26 25 19 18 24 28 22 23 33 49 29 RELATIVE HUMIDITY (MEAN% 15UTC) 56 31 28 27 20 19 25 27 24 23 34 62 31 RH=0 => RELATIVE HUMIDITY < 0.5% AMOUNT OF PRECIPITATION MM. 50.6 0.5 8.4 3.0 0.0 0.0 2.0 8.0 0.0 0.0 5.9 130.4 208.8 DAYS WITH PRECIPITATION >=10 2 0 0 0 0 0 0 0 0 0 0 4 6 DAYS WITH PRECIPITATION >= 5 3 0 1 0 0 0 0 1 0 0 0 6 11 DAYS WITH PRECIPITATION >= 1 4 0 1 1 0 0 1 2 0 0 2 6 17 DAYS WITH PRECIPITATION 5 1 2 1 0 0 1 2 0 0 3 6 21 GREATEST DAILY PRECIPITATION 23.0 0.5 8.0 3.0 0.0 0.0 2.0 7.0 0.0 0.0 4.0 64.0 64.0 DAY 10 4 20 5 ** ** 12 23 ** ** 24 26 DAY WITH THUNDER STORM 3 0 0 0 1 0 3 3 2 1 0 2 15 DAYS WITH SNOW OR SLEET 0 0 0 0 0 0 0 0 0 0 0 0 0 DAYS WITH DUST 1 4 2 10 14 12 23 24 15 12 3 5 125 WIND DIRECTION (PREVAILING) 270 270 270 270 270 225 90 270 90 270 270 270 270 PREVAILING WIND SPEED(KNOTS) 9.6 11.6 11.3 14.0 13.3 11.1 10.9 12.3 12.9 8.4 10.2 9.7 11.6 PREVAILING WIND PERCENT 10.3 20.7 25.8 34.0 28.4 22.7 12.9 14.8 12.0 16.8 12.7 9.0 17.0 CALMS PERCENT OF WIND 69.7 53.1 51.6 42.0 40.6 42.0 45.8 50.3 58.7 67.1 74.0 70.3 55.5 NO. OF WIND OBSERVATION 155 145 155 150 155 150 155 155 150 155 150 155 1830 VECTOR WIND DIRECTION (MEAN) 269 273 264 264 268 231 197 231 150 249 266 211 252 VECTOR WIND MAGNITUDE(KNOTS) 1.3 3.1 3.5 6.1 5.4 4.5 1.1 2.1 2.0 1.6 1.6 0.3 2.4 WIND STEADINESES (MEAN %) 43.3 62.0 67.3 81.3 76.1 70.3 18.3 36.8 44.4 59.3 69.6 10.3 49.0 WIND SPEED (MEAN KNOTS) 3.0 5.0 5.2 7.5 7.1 6.4 6.0 5.7 4.5 2.7 2.3 2.9 4.9 FASTEST WIND DIRECTION 320 270 270 280 280 270 10 30 130 230 180 310 10 FASTEST WIND SPEED (KNOTS) 23 23 23 25 27 19 39 29 25 16 17 23 39 DAY 9 25 31 8 16 8 12 22 12 19 2 13 DAYS WITH SKY CLEAR (0-2)/8 16 22 24 11 27 28 21 29 30 31 23 19 281 DAYS WITH P.CLOUDY (3-6)/8 9 6 4 13 4 2 10 2 0 0 4 4 58 DAYS WITH CLOUDY (7-8)/8 6 1 3 6 0 0 0 0 0 0 3 8 27 DAYS WITH VISIBILITY =< 2 KM 5 0 0 0 1 0 0 0 0 1 1 5 13 DURATION OF SUNSHINE HOURS 217.6 282.9 295.2 260.8 349.3 362.0 330.6 328.1 301.8 306.8 269.9 210.6 3515.6 ======================================================================================================================= 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 2004 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL MEAN QFE PRESSURE IN HPA 924.9 926.1 924.0 921.0 917.2 913.7 912.5 912.8 918.9 924.3 925.9 926.3 920.6 MAX. QFE PRESSURE IN HPA 931.0 931.4 929.6 927.4 922.6 921.2 916.6 917.7 925.2 929.0 931.0 933.6 933.6 DAY-HOUR 10- 6 10- 6 6- 6 5- 6 3- 6 2- 6 18- 6 29- 6 27- 6 23- 6 28- 6 4- 6 MIN. QFE PRESSURE IN HPA 919.2 921.0 918.0 915.2 910.9 906.6 908.0 907.1 911.8 919.0 922.0 919.0 906.6 DAY-HOUR 27- 3 18-12 31-12 17-15 13-12 18-15 28-15 4-15 11-15 2-12 24-12 27-12 MEAN QNH PRESSURE IN HPA 1016.4 1017.8 1015.5 1012.3 1008.1 1004.4 1003.1 1003.4 1010.0 1015.9 1017.6 1018.0 1011.9 MAX. QNH PRESSURE IN HPA 1023.1 1023.5 1021.5 1019.2 1014.0 1012.5 1007.5 1008.7 1016.8 1020.9 1023.1 1025.9 1025.9 DAY-HOUR 10- 6 10- 6 6- 6 5- 6 3- 6 2- 6 18- 6 29- 6 27- 6 23- 6 28- 6 4- 6 MIN. QNH PRESSURE IN HPA 1010.3 1012.3 1009.0 1006.0 1001.4 996.7 998.2 997.2 1002.3 1010.1 1013.3 1010.1 996.7 DAY-HOUR 27- 3 18-12 31-12 17-15 13-12 18-15 28-15 4-15 11-15 2-12 24-12 27-12 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 924.8 926.2 924.3 921.5 918.0 914.7 913.5 913.9 919.7 925.1 926.5 926.3 921.2 MAX. QFE PRESSURE IN HPA 929.8 930.2 928.0 926.3 921.8 920.3 915.4 917.0 924.6 927.8 929.2 931.8 931.8 DAY 10 9 7 5 3 2 17 23 27 27 29 4 MIN. QFE PRESSURE IN HPA 919.2 921.8 919.8 917.5 913.2 909.3 911.0 910.8 914.0 921.5 923.5 920.2 909.3 DAY 27 19 15 18 13 18 28 3 12 8 24 27 MEAN QNH PRESSURE IN HPA 1016.4 1017.8 1015.8 1012.8 1009.0 1005.5 1004.2 1004.6 1010.8 1016.7 1018.2 1018.0 1012.5 MAX. QNH PRESSURE IN HPA 1021.8 1022.2 1019.8 1018.0 1013.1 1011.5 1006.2 1007.9 1016.1 1019.6 1021.1 1023.9 1023.9 DAY 10 9 7 5 3 2 17 23 27 27 29 4 MIN. QNH PRESSURE IN HPA 1010.3 1013.1 1011.0 1008.5 1003.8 999.6 1001.5 1001.2 1004.7 1012.8 1015.0 1011.4 999.6 DAY 27 19 15 18 13 18 28 3 12 8 24 27 MEAN QFF PRESSURE IN HPA 1015.7 1016.4 1012.8 1008.5 1002.9 998.3 996.3 996.7 1004.6 1012.3 1015.7 1017.6 1008.2 MAX. QFF PRESSURE IN HPA 1021.3 1022.2 1018.2 1013.4 1007.5 1004.7 998.7 1001.4 1011.5 1016.1 1019.7 1024.3 1024.3 DAY 1 9 24 5 3 2 23 27 27 27 30 30 MIN. QFF PRESSURE IN HPA 1007.9 1011.8 1006.1 1004.4 997.8 992.6 993.6 993.0 997.6 1007.8 1011.1 1011.5 992.6 DAY 27 19 15 18 13 19 28 3 12 3 24 27 ======================================================================================================================= 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 2004 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 0600 UTC. MEAN QFE PRESSURE IN HPA 926.3 927.7 925.8 922.7 918.8 915.3 914.1 914.6 920.8 926.3 927.8 927.9 922.4 MAX. QFE PRESSURE IN HPA 931.0 931.4 929.6 927.4 922.6 921.2 916.6 917.7 925.2 929.0 931.0 933.6 933.6 DAY 10 10 6 5 3 2 18 29 27 23 28 4 MIN. QFE PRESSURE IN HPA 920.4 923.6 921.2 918.7 913.9 909.7 911.8 911.2 914.8 922.4 925.0 921.6 909.7 DAY 27 19 15 17 13 18 28 3 12 3 24 27 MEAN QNH PRESSURE IN HPA 1018.0 1019.4 1017.4 1014.1 1009.9 1006.1 1004.9 1005.3 1012.0 1018.0 1019.6 1019.7 1013.7 MAX. QNH PRESSURE IN HPA 1023.1 1023.5 1021.5 1019.2 1014.0 1012.5 1007.5 1008.7 1016.8 1020.9 1023.1 1025.9 1025.9 DAY 10 10 6 5 3 2 18 29 27 23 28 4 MIN. QNH PRESSURE IN HPA 1011.6 1015.1 1012.5 1009.8 1004.6 1000.1 1002.3 1001.7 1005.6 1013.8 1016.6 1012.9 1000.1 DAY 27 19 15 17 13 18 28 3 12 3 24 27 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** PRESSURE AT HOUR 0900 UTC. MEAN QFE PRESSURE IN HPA 925.4 926.8 924.7 921.6 917.7 914.1 913.0 913.4 919.3 924.7 926.3 926.7 921.1 MAX. QFE PRESSURE IN HPA 930.0 930.6 928.7 925.0 921.4 920.7 915.4 916.8 923.8 927.6 929.8 931.8 931.8 DAY 10 9 6 5 3 2 18 29 27 31 28 4 MIN. QFE PRESSURE IN HPA 921.1 923.0 920.2 917.8 912.5 908.6 910.2 910.1 913.4 920.8 923.1 920.2 908.6 DAY 27 19 31 17 13 18 28 3 12 3 24 27 MEAN QNH PRESSURE IN HPA 1017.0 1018.5 1016.2 1012.9 1008.7 1004.8 1003.6 1004.0 1010.5 1016.2 1017.9 1018.5 1012.4 MAX. QNH PRESSURE IN HPA 1022.0 1022.6 1020.6 1016.6 1012.7 1011.9 1006.2 1007.7 1015.3 1019.4 1021.8 1023.9 1023.9 DAY 10 9 6 5 3 2 18 29 27 31 28 4 MIN. QNH PRESSURE IN HPA 1012.4 1014.4 1011.4 1008.8 1003.1 998.9 1000.6 1000.5 1004.1 1012.0 1014.5 1011.4 998.9 DAY 27 19 31 17 13 18 28 3 12 3 24 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 923.7 924.9 922.6 919.7 915.9 912.4 911.3 911.3 917.4 922.7 924.4 925.0 919.3 MAX. QFE PRESSURE IN HPA 928.0 929.0 926.4 923.6 919.4 918.6 913.2 915.1 922.0 925.0 927.9 930.0 930.0 DAY 10 10 6 7 3 2 17 22 27 22 28 4 MIN. QFE PRESSURE IN HPA 919.8 921.0 918.0 915.7 910.9 906.8 908.8 908.0 912.0 919.0 922.0 919.0 906.8 DAY 27 18 31 17 13 18 28 4 12 2 24 27 MEAN QNH PRESSURE IN HPA 1015.1 1016.5 1014.0 1010.9 1006.7 1003.0 1001.7 1001.8 1008.3 1014.1 1016.0 1016.6 1010.4 MAX. QNH PRESSURE IN HPA 1019.8 1020.9 1018.1 1015.1 1010.5 1009.7 1003.8 1005.9 1013.3 1016.6 1019.7 1022.0 1022.0 DAY 10 10 6 7 3 2 17 22 27 22 28 4 MIN. QNH PRESSURE IN HPA 1011.0 1012.3 1009.0 1006.5 1001.4 996.9 999.1 998.2 1002.5 1010.1 1013.3 1010.1 996.9 DAY 27 18 31 17 13 18 28 4 12 2 24 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 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 2004 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 1500 UTC. MEAN QFE PRESSURE IN HPA 924.2 925.1 922.7 919.7 915.4 911.9 910.7 910.9 917.3 922.9 924.8 925.8 919.3 MAX. QFE PRESSURE IN HPA 930.2 929.0 926.1 924.3 919.0 917.7 912.3 916.0 922.0 925.4 928.2 930.6 930.6 DAY 9 10 23 4 3 1 16 22 27 31 28 4 MIN. QFE PRESSURE IN HPA 920.1 921.1 918.1 915.2 911.0 906.6 908.0 907.1 911.8 919.0 922.8 919.8 906.6 DAY 23 18 15 17 12 18 28 4 11 2 10 21 MEAN QNH PRESSURE IN HPA 1015.7 1016.7 1014.1 1010.8 1006.3 1002.5 1001.1 1001.4 1008.2 1014.3 1016.3 1017.4 1010.4 MAX. QNH PRESSURE IN HPA 1022.2 1020.9 1017.8 1015.8 1010.1 1008.7 1002.9 1006.9 1013.3 1017.0 1020.0 1022.6 1022.6 DAY 9 10 23 4 3 1 16 22 27 31 28 4 MIN. QNH PRESSURE IN HPA 1011.3 1012.4 1009.1 1006.0 1001.5 996.7 998.2 997.2 1002.3 1010.1 1014.2 1011.0 996.7 DAY 23 18 15 17 12 18 28 4 11 2 10 21 MEAN QFF PRESSURE IN HPA 1015.0 1015.3 1010.9 1006.4 1000.0 995.2 993.2 993.6 1002.1 1009.9 1013.9 1016.9 1006.0 MAX. QFF PRESSURE IN HPA 1020.7 1020.4 1015.6 1011.9 1004.8 1002.3 995.2 999.7 1008.5 1014.0 1017.6 1022.7 1022.7 DAY 9 10 23 4 17 1 21 22 27 31 28 4 MIN. QFF PRESSURE IN HPA 1009.9 1011.4 1004.0 1001.9 995.4 989.6 990.1 988.9 995.3 1004.4 1011.3 1010.5 988.9 DAY 14 18 15 28 12 18 28 4 11 2 9 21 PRESSURE AT HOUR 1800 UTC. MEAN QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** PRESSURE AT HOUR 2100 UTC. MEAN QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION 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 2005 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AIR TEMPERATURE (C) 11.7 13.4 19.2 27.4 31.1 36.4 37.2 36.6 33.3 27.6 20.4 17.2 26.0 MINIMUN AIR TEMPERATURE (C) 4.5 6.3 10.0 15.1 18.7 23.0 26.6 25.4 20.8 15.4 10.6 6.3 15.2 DAYS WITH MINIMUM TEMP. >=21 0 0 0 0 5 25 31 31 15 0 0 0 107 DAYS WITH MINIMUM TEMP. <=-4 0 0 0 0 0 0 0 0 0 0 0 0 0 DAYS WITH FREEZING MIN.<= 0 1 1 0 0 0 0 0 0 0 0 0 0 2 TEMPERATURE RECORDS LOWEST(C) -0.6 -0.4 5.8 9.0 13.4 19.0 22.2 22.6 14.6 12.0 4.6 1.8 -0.6 DAY 14 11 26 9 7 1 25 23 30 25 11 28 MAXIMUM AIR TEMPERATURE (C) 17.0 18.5 24.9 33.4 36.5 42.2 42.8 42.4 39.8 33.8 26.6 24.0 31.8 DAYS WITH MAXIMUM TEMP. >=30 0 0 1 28 31 30 31 31 30 31 6 0 219 DAYS WITH MAXIMUM TEMP. <= 0 0 0 0 0 0 0 0 0 0 0 0 0 0 TEMPERATURE RECORDS HIGHEST(C) 23.2 22.2 31.0 37.0 39.6 47.0 44.6 45.2 42.4 37.0 32.8 27.6 47.0 DAY 2 28 31 25 19 25 16 5 4 11 1 7 DIF. BETWEEN (MAX.-MIN.) (C) 12.5 12.2 14.9 18.3 17.8 19.2 16.2 17.0 19.0 18.4 16.0 17.7 16.6 MEAN DAILY TEMP. (MDT) (C) 10.8 12.4 17.4 24.3 27.6 32.6 34.7 33.9 30.3 24.6 18.6 15.2 23.5 COOLING DEG. DAYS(BASE 21 0C) 0.0 0.0 2.0 103.5 204.0 347.7 425.2 399.9 279.1 110.9 8.0 0.0 1880.3 HEATING DEG. DAYS(BASE 18 0C) 224.7 157.5 38.7 0.0 0.0 0.0 0.0 0.0 0.0 0.0 24.8 88.1 533.7 DEWPOINT (MEAN C) 4.9 5.8 8.7 7.1 5.6 8.3 16.0 15.3 12.2 8.6 7.0 3.4 8.6 MIXING RATIO (G/KG) 6.03 6.54 7.92 7.09 6.57 7.81 13.16 12.47 10.18 7.80 7.00 5.42 8.17 VAPOUR PRESSURE (HPA) 8.88 9.60 11.61 10.39 9.59 11.30 18.86 17.92 14.74 11.44 10.30 8.01 11.89 SATURATION DEF. (HPA) 5.46 6.38 11.93 28.12 37.82 52.66 46.80 46.08 39.14 27.62 15.16 12.82 27.50 RELATIVE HUMIDITY (MEAN %) 67 64 56 31 23 20 32 31 30 32 46 43 40 RELATIVE HUMIDITY (MAX. %) 91 90 85 56 43 35 52 49 48 52 68 66 61 RELATIVE HUMIDITY (MIN. %) 45 45 37 18 14 13 21 21 19 22 30 27 26 RELATIVE HUMIDITY (MEAN% 03UTC) 90 90 85 56 43 35 52 49 47 52 66 64 61 RELATIVE HUMIDITY (MEAN% 09UTC) 56 53 43 21 17 15 24 25 23 24 34 34 31 RELATIVE HUMIDITY (MEAN% 15UTC) 62 55 49 25 18 17 26 24 25 29 43 39 34 RH=0 => RELATIVE HUMIDITY < 0.5% AMOUNT OF PRECIPITATION MM. 60.0 31.6 38.7 0.0 0.0 0.0 5.4 0.0 0.0 0.0 3.6 1.0 140.3 DAYS WITH PRECIPITATION >=10 3 2 2 0 0 0 0 0 0 0 0 0 7 DAYS WITH PRECIPITATION >= 5 3 2 4 0 0 0 0 0 0 0 0 0 9 DAYS WITH PRECIPITATION >= 1 5 5 5 0 0 0 2 0 0 0 1 1 19 DAYS WITH PRECIPITATION 5 8 6 0 0 0 3 0 0 0 3 1 26 GREATEST DAILY PRECIPITATION 23.0 12.0 14.0 0.0 0.0 0.0 3.0 0.0 0.0 0.0 3.0 1.0 23.0 DAY 19 14 17 ** ** ** 24 ** ** ** 17 31 DAY WITH THUNDER STORM 0 2 2 0 0 0 4 0 0 0 2 1 11 DAYS WITH SNOW OR SLEET 0 0 0 0 0 0 0 0 0 0 0 0 0 DAYS WITH DUST 1 2 0 5 11 11 22 10 1 0 1 2 66 WIND DIRECTION (PREVAILING) 270 270 270 270 270 225 225 225 270 90 270 90 270 PREVAILING WIND SPEED(KNOTS) 7.8 8.0 8.3 9.7 8.6 8.3 8.8 8.6 8.5 7.3 7.8 6.8 8.3 PREVAILING WIND PERCENT 10.3 13.6 24.5 19.3 21.3 22.0 15.5 13.5 16.0 5.8 18.7 9.7 13.8 CALMS PERCENT OF WIND 71.0 71.4 56.8 56.7 52.3 50.0 49.0 54.2 52.0 75.5 71.3 71.0 60.9 NO. OF WIND OBSERVATION 155 140 155 150 155 150 155 155 150 155 150 155 1825 VECTOR WIND DIRECTION (MEAN) 145 264 261 245 246 235 195 227 225 199 265 101 239 VECTOR WIND MAGNITUDE(KNOTS) 0.2 1.0 2.2 2.7 2.9 2.3 0.8 1.9 2.1 0.5 1.5 0.5 1.4 WIND STEADINESES (MEAN %) 7.7 45.5 64.7 69.2 72.5 62.2 20.0 52.8 53.8 27.8 68.2 27.8 45.2 WIND SPEED (MEAN KNOTS) 2.6 2.2 3.4 3.9 4.0 3.7 4.0 3.6 3.9 1.8 2.2 1.8 3.1 FASTEST WIND DIRECTION 210 270 270 270 290 210 90 270 270 90 240 90 90 FASTEST WIND SPEED (KNOTS) 21 16 17 19 16 17 23 17 16 14 21 16 23 DAY 6 5 9 7 3 12 20 30 6 25 9 31 DAYS WITH SKY CLEAR (0-2)/8 21 13 14 20 24 29 27 31 29 31 20 23 282 DAYS WITH P.CLOUDY (3-6)/8 6 9 12 10 4 0 4 0 1 0 7 6 59 DAYS WITH CLOUDY (7-8)/8 4 6 5 0 3 1 0 0 0 0 3 2 24 DAYS WITH VISIBILITY =< 2 KM 6 3 3 0 0 0 4 0 0 0 1 1 18 DURATION OF SUNSHINE HOURS 239.5 189.9 233.0 311.0 327.9 353.9 322.4 335.7 306.8 320.7 242.4 266.7 3449.9 ======================================================================================================================= 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 2005 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL MEAN QFE PRESSURE IN HPA 926.0 924.0 923.9 922.9 918.5 913.0 911.6 913.0 917.2 923.8 925.9 926.9 920.6 MAX. QFE PRESSURE IN HPA 930.7 929.1 927.8 927.6 923.6 919.6 917.2 918.2 922.4 928.8 931.0 931.2 931.2 DAY-HOUR 8- 6 1- 6 5- 6 14- 6 9- 6 4- 6 19- 6 27- 6 26- 6 29- 6 23- 6 28- 6 MIN. QFE PRESSURE IN HPA 921.0 919.0 919.0 915.6 915.0 904.2 905.6 906.2 911.0 918.8 922.0 922.4 904.2 DAY-HOUR 23-12 28-12 1-12 30-15 5-15 28-15 5-15 7-15 11-15 4-12 1-15 1-12 MEAN QNH PRESSURE IN HPA 1017.7 1015.5 1015.3 1014.3 1009.6 1003.6 1002.1 1003.6 1008.1 1015.3 1017.5 1018.6 1011.8 MAX. QNH PRESSURE IN HPA 1022.7 1021.0 1019.6 1019.4 1015.1 1010.7 1008.2 1009.2 1013.8 1020.7 1023.1 1023.3 1023.3 DAY-HOUR 8- 6 1- 6 5- 6 14- 6 9- 6 4- 6 19- 6 27- 6 26- 6 29- 6 23- 6 28- 6 MIN. QNH PRESSURE IN HPA 1012.3 1010.1 1010.1 1006.4 1005.8 994.1 995.6 996.3 1001.5 1009.9 1013.3 1013.8 994.1 DAY-HOUR 23-12 28-12 1-12 30-15 5-15 28-15 5-15 7-15 11-15 4-12 1-15 1-12 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY-HOUR **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY-HOUR **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** PRESSURE AT HOUR 0000 UTC. MEAN QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** PRESSURE AT HOUR 0300 UTC. MEAN QFE PRESSURE IN HPA 926.1 923.8 923.9 923.3 919.4 914.0 912.8 914.0 918.0 924.5 926.3 927.2 921.1 MAX. QFE PRESSURE IN HPA 929.0 927.5 926.8 926.4 922.4 918.6 916.2 917.6 921.0 926.8 929.8 930.0 930.0 DAY 9 1 6 21 9 4 19 27 26 29 23 28 MIN. QFE PRESSURE IN HPA 921.2 920.0 919.8 918.0 916.6 907.8 909.0 909.1 914.6 920.2 923.7 924.0 907.8 DAY 23 8 1 30 21 28 5 7 5 4 9 1 MEAN QNH PRESSURE IN HPA 1017.7 1015.3 1015.4 1014.8 1010.5 1004.7 1003.4 1004.7 1009.0 1016.0 1018.0 1019.0 1012.4 MAX. QNH PRESSURE IN HPA 1020.9 1019.3 1018.5 1018.1 1013.8 1009.7 1007.1 1008.6 1012.3 1018.5 1021.8 1022.0 1022.0 DAY 9 1 6 21 9 4 19 27 26 29 23 28 MIN. QNH PRESSURE IN HPA 1012.5 1011.2 1011.0 1009.0 1007.5 998.0 999.3 999.4 1005.3 1011.4 1015.2 1015.5 998.0 DAY 23 8 1 30 21 28 5 7 5 4 9 1 MEAN QFF PRESSURE IN HPA 1017.9 1014.8 1013.3 1010.4 1004.9 997.5 995.4 997.0 1002.7 1011.7 1015.7 1017.9 1008.3 MAX. QFF PRESSURE IN HPA 1021.8 1019.2 1017.7 1013.8 1009.1 1003.5 998.4 1000.9 1007.1 1015.3 1019.5 1022.6 1022.6 DAY 13 1 6 9 9 4 25 29 28 30 22 28 MIN. QFF PRESSURE IN HPA 1011.9 1010.3 1008.9 1004.1 1000.6 990.5 991.9 991.1 998.2 1006.7 1012.0 1013.9 990.5 DAY 23 5 1 30 21 28 5 7 5 4 9 1 ======================================================================================================================= 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 2005 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 0600 UTC. MEAN QFE PRESSURE IN HPA 927.7 925.7 925.3 924.7 920.3 914.6 913.2 914.7 918.9 925.7 927.6 928.8 922.3 MAX. QFE PRESSURE IN HPA 930.7 929.1 927.8 927.6 923.6 919.6 917.2 918.2 922.4 928.8 931.0 931.2 931.2 DAY 8 1 5 14 9 4 19 27 26 29 23 28 MIN. QFE PRESSURE IN HPA 922.0 921.4 921.2 919.0 917.2 908.0 909.4 909.8 915.2 921.2 924.8 925.8 908.0 DAY 23 8 1 30 21 28 5 7 5 4 9 1 MEAN QNH PRESSURE IN HPA 1019.5 1017.3 1016.9 1016.3 1011.5 1005.3 1003.9 1005.5 1010.0 1017.3 1019.4 1020.7 1013.6 MAX. QNH PRESSURE IN HPA 1022.7 1021.0 1019.6 1019.4 1015.1 1010.7 1008.2 1009.2 1013.8 1020.7 1023.1 1023.3 1023.3 DAY 8 1 5 14 9 4 19 27 26 29 23 28 MIN. QNH PRESSURE IN HPA 1013.3 1012.7 1012.5 1010.1 1008.2 998.2 999.7 1000.2 1006.0 1012.5 1016.4 1017.4 998.2 DAY 23 8 1 30 21 28 5 7 5 4 9 1 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** PRESSURE AT HOUR 0900 UTC. MEAN QFE PRESSURE IN HPA 926.6 924.7 924.4 923.5 919.0 913.5 912.1 913.6 917.7 924.3 926.3 927.3 921.1 MAX. QFE PRESSURE IN HPA 929.6 928.1 927.0 926.6 922.0 918.0 915.8 917.2 921.0 927.4 929.6 930.0 930.0 DAY 9 1 10 14 9 4 19 27 26 29 22 8 MIN. QFE PRESSURE IN HPA 922.0 920.6 919.8 917.1 916.0 907.0 908.3 908.7 914.0 920.3 923.5 924.4 907.0 DAY 23 8 1 29 21 28 5 7 11 4 9 1 MEAN QNH PRESSURE IN HPA 1018.3 1016.3 1016.0 1014.9 1010.1 1004.1 1002.6 1004.2 1008.7 1015.8 1017.9 1019.1 1012.3 MAX. QNH PRESSURE IN HPA 1021.5 1019.9 1018.7 1018.3 1013.3 1009.0 1006.6 1008.2 1012.3 1019.2 1021.5 1022.0 1022.0 DAY 9 1 10 14 9 4 19 27 26 29 22 8 MIN. QNH PRESSURE IN HPA 1013.3 1011.8 1011.0 1008.0 1006.9 997.1 998.5 999.0 1004.7 1011.5 1015.0 1015.9 997.1 DAY 23 8 1 29 21 28 5 7 11 4 9 1 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** PRESSURE AT HOUR 1200 UTC. MEAN QFE PRESSURE IN HPA 924.8 922.8 922.8 921.6 917.3 911.9 910.2 911.6 915.8 922.4 924.5 925.4 919.2 MAX. QFE PRESSURE IN HPA 927.9 927.0 925.7 925.0 920.2 916.7 914.0 915.2 919.3 926.0 928.2 928.1 928.2 DAY 21 15 5 9 9 6 19 27 30 29 22 28 MIN. QFE PRESSURE IN HPA 921.0 919.0 919.0 916.0 915.0 905.0 906.2 907.0 911.2 918.8 922.0 922.4 905.0 DAY 23 28 1 29 21 28 5 7 11 4 8 1 MEAN QNH PRESSURE IN HPA 1016.3 1014.2 1014.2 1012.9 1008.3 1002.4 1000.6 1002.1 1006.6 1013.7 1016.1 1017.0 1010.4 MAX. QNH PRESSURE IN HPA 1019.7 1018.7 1017.3 1016.6 1011.4 1007.6 1004.7 1006.0 1010.4 1017.7 1020.0 1019.9 1020.0 DAY 21 15 5 9 9 6 19 27 30 29 22 28 MIN. QNH PRESSURE IN HPA 1012.3 1010.1 1010.1 1006.9 1005.8 995.0 996.3 997.1 1001.7 1009.9 1013.3 1013.8 995.0 DAY 23 28 1 29 21 28 5 7 11 4 8 1 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION 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 2005 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 1500 UTC. MEAN QFE PRESSURE IN HPA 925.1 923.0 922.9 921.2 916.7 911.1 909.7 911.1 915.5 922.3 924.7 925.9 919.1 MAX. QFE PRESSURE IN HPA 928.0 927.4 926.0 925.0 919.8 915.7 916.5 914.8 919.6 926.0 928.8 928.8 928.8 DAY 9 15 5 14 9 6 20 27 30 29 21 7 MIN. QFE PRESSURE IN HPA 921.8 919.0 919.0 915.6 915.0 904.2 905.6 906.2 911.0 918.8 922.0 922.4 904.2 DAY 28 28 24 30 5 28 5 7 11 4 1 1 MEAN QNH PRESSURE IN HPA 1016.7 1014.4 1014.3 1012.5 1007.6 1001.6 1000.1 1001.6 1006.3 1013.7 1016.3 1017.5 1010.2 MAX. QNH PRESSURE IN HPA 1019.8 1019.2 1017.7 1016.6 1011.0 1006.5 1007.4 1005.6 1010.7 1017.7 1020.7 1020.7 1020.7 DAY 9 15 5 14 9 6 20 27 30 29 21 7 MIN. QNH PRESSURE IN HPA 1013.1 1010.1 1010.1 1006.4 1005.8 994.1 995.6 996.3 1001.5 1009.9 1013.3 1013.8 994.1 DAY 28 28 24 30 5 28 5 7 11 4 1 1 MEAN QFF PRESSURE IN HPA 1016.9 1013.9 1012.1 1008.1 1002.0 994.3 992.1 993.8 999.9 1009.3 1014.0 1016.5 1006.1 MAX. QFF PRESSURE IN HPA 1020.0 1019.1 1016.3 1013.2 1006.1 999.5 1000.4 997.9 1005.3 1014.3 1019.6 1020.7 1020.7 DAY 21 15 5 9 9 1 20 27 30 29 21 28 MIN. QFF PRESSURE IN HPA 1012.8 1008.2 1007.4 1001.5 999.3 986.6 988.3 987.7 994.6 1005.0 1009.6 1012.3 986.6 DAY 23 28 24 30 21 28 5 7 11 4 1 1 PRESSURE AT HOUR 1800 UTC. MEAN QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** PRESSURE AT HOUR 2100 UTC. MEAN QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION LAR (40873) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 27 41 N LONGITUDE 54 17 E DATA PROCESSING CENTER ELEVATION 792.0 M CLIMATOLOGICAL NORMALS FOR THE PERIOD 1989-2005 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AIR TEMPERATURE (C) 12.5 15.1 18.9 25.9 32.2 36.1 37.1 36.1 32.6 27.2 20.3 15.1 25.7 MINIMUN AIR TEMPERATURE (C) 4.8 6.7 9.8 14.6 19.6 22.9 26.3 25.6 21.3 15.5 9.6 6.1 15.2 DAYS WITH MINIMUM TEMP. >=21 0.0 0.0 0.1 0.4 9.7 25.9 30.5 30.2 17.4 0.4 0.0 0.0 114.6 DAYS WITH MINIMUM TEMP. <=-4 0.1 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.1 DAYS WITH FREEZING MIN.<= 0 1.6 0.8 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 1.2 3.6 TEMPERATURE RECORDS LOWEST(C) -4.8 -2.0 1.0 6.6 10.2 16.0 19.0 19.4 13.0 8.4 0.6 -3.6 -4.8 YEAR-DAY 91- 8 1- 1 92- 1 92- 7 91- 6 93- 5 91- 1 96-27 92-11 96-22 95-28 94- 9 91- 8 MAXIMUM AIR TEMPERATURE (C) 18.1 20.8 24.6 31.8 38.0 42.2 43.1 42.1 38.9 33.7 26.8 21.2 31.8 DAYS WITH MAXIMUM TEMP. >=30 0.0 0.0 2.9 20.9 30.8 30.0 31.0 30.6 30.0 29.6 4.8 0.1 210.7 DAYS WITH MAXIMUM TEMP. <= 0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 TEMPERATURE RECORDS HIGHEST(C) 27.2 29.4 34.2 39.4 44.6 48.6 47.0 47.8 43.6 39.4 34.2 30.6 48.6 YEAR-DAY 94- 4 0-27 98-29 2-28 92-30 92-25 91- 2 91- 9 91-10 98- 1 92-14 98-13 92-25 DIF. BETWEEN (MAX.-MIN.) (C) 13.3 14.1 14.8 17.2 18.4 19.3 16.8 16.5 17.6 18.2 17.2 15.1 16.6 MEAN DAILY TEMP. (MDT) (C) 11.5 13.7 17.2 23.2 28.8 32.5 34.7 33.9 30.1 24.6 18.2 13.7 23.5 STANDARD DEVIATION OF MDT(C) 1.13 1.15 1.54 1.59 1.08 0.67 0.60 0.49 0.79 0.74 0.81 1.25 0.99 COOLING DEG. DAYS(BASE 21 0C) 0.0 0.0 4.3 78.7 241.0 346.4 423.5 393.7 271.9 112.3 4.3 0.0 1876.1 HEATING DEG. DAYS(BASE 18 0C) 201.8 121.3 50.3 1.8 0.0 0.0 0.0 0.0 0.0 0.0 28.4 135.2 538.8 DEWPOINT (MEAN C) 4.0 4.6 6.3 7.6 9.2 10.8 15.3 15.2 12.3 8.0 5.1 4.5 8.6 MIXING RATIO (G/KG) 5.81 6.11 6.86 7.48 8.52 9.62 12.75 12.55 10.40 7.62 6.31 6.06 8.34 VAPOUR PRESSURE (HPA) 8.56 8.98 10.06 10.94 12.38 13.87 18.26 18.04 15.07 11.16 9.29 8.93 12.13 SATURATION DEF. (HPA) 6.77 9.21 13.03 24.55 38.16 48.83 47.41 44.17 36.69 27.04 16.02 9.38 26.77 RELATIVE HUMIDITY (MEAN %) 61 54 50 36 27 25 31 32 33 33 41 54 39 RELATIVE HUMIDITY (MAX. %) 84 80 75 60 44 39 48 53 54 53 62 76 61 RELATIVE HUMIDITY (MIN. %) 42 37 32 23 19 17 21 20 20 21 27 37 26 RELATIVE HUMIDITY (MEAN% 03UTC) 83 79 74 59 44 39 48 53 53 53 61 76 60 RELATIVE HUMIDITY (MEAN% 09UTC) 50 44 39 27 22 20 25 25 25 25 33 45 32 RELATIVE HUMIDITY (MEAN% 15UTC) 55 47 41 30 23 20 25 26 26 27 36 50 34 RH=0 => RELATIVE HUMIDITY < 0.5% AMOUNT OF PRECIPITATION MM. 48.7 45.2 42.4 7.2 0.5 2.5 11.8 6.5 4.1 3.8 3.2 49.8 225.7 DAYS WITH PRECIPITATION >=10 1.8 1.2 1.3 0.3 0.0 0.1 0.3 0.2 0.1 0.1 0.1 1.7 7.2 DAYS WITH PRECIPITATION >= 5 3.0 2.2 2.4 0.5 0.1 0.3 0.5 0.5 0.2 0.1 0.2 2.3 12.3 DAYS WITH PRECIPITATION >= 1 5.2 3.7 4.9 1.1 0.1 0.3 1.3 1.4 0.9 0.3 0.8 3.5 23.5 DAYS WITH PRECIPITATION 6.2 5.3 6.2 1.7 0.2 0.4 1.6 2.2 1.2 0.6 1.5 4.3 31.4 GREATEST DAILY PRECIPITATION 44.0 102.0 63.4 18.0 5.0 19.0 40.0 21.0 27.0 52.0 13.0 75.0 102.0 YEAR-DAY 96-12 93- 4 96-13 95-24 92-12 96-13 95-24 95-23 93- 4 91- 1 91-24 95-12 93 DAY WITH THUNDER STORM 0.7 0.8 1.1 0.4 0.2 0.3 1.9 2.5 1.5 0.7 0.2 1.1 11.4 DAYS WITH SNOW OR SLEET 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 DAYS WITH DUST 1.2 2.0 4.3 7.0 12.9 11.3 18.2 12.2 7.9 4.6 2.5 1.3 85.4 WIND DIRECTION (PREVAILING) 90 270 270 270 270 270 90 225 225 270 270 90 270 PREVAILING WIND SPEED(KNOTS) 10.2 10.6 10.7 11.9 11.5 10.4 11.2 10.9 10.0 9.3 9.9 10.5 10.7 PREVAILING WIND PERCENT 8.6 13.4 15.2 23.2 23.3 15.3 10.4 10.5 11.1 8.2 9.1 6.5 12.4 CALMS PERCENT OF WIND 72.3 64.3 59.6 53.9 50.0 51.2 50.4 52.7 57.5 69.5 73.7 78.3 61.1 NO. OF WIND OBSERVATION 158.8 140.7 155.0 150.0 155.0 150.0 155.0 153.2 150.0 155.0 149.9 155.0 1827.6 VECTOR WIND DIRECTION (MEAN) 348 268 263 268 270 244 204 196 228 231 274 334 255 VECTOR WIND MAGNITUDE(KNOTS) 0.2 1.1 1.4 3.6 3.7 2.1 0.9 0.9 1.4 0.7 0.7 0.1 1.3 WIND STEADINESES (MEAN %) 7.4 29.7 31.8 67.9 66.1 41.2 16.7 18.0 33.3 25.0 28.0 5.0 31.7 WIND SPEED (MEAN KNOTS) 2.7 3.7 4.4 5.3 5.6 5.1 5.4 5.0 4.2 2.8 2.5 2.0 4.1 FASTEST WIND DIRECTION 320 240 270 280 220 90 340 270 190 230 330 90 340 FASTEST WIND SPEED (KNOTS) 27 25 35 27 27 33 58 47 58 25 31 23 58 YEAR-DAY 98-13 3-17 91-10 91- 6 94- 9 97-21 95-21 89-17 93- 3 94-18 97-11 91-18 95 DAYS WITH SKY CLEAR (0-2)/8 17.6 16.6 16.8 18.3 24.6 28.6 24.5 26.4 28.9 29.2 22.1 20.1 273.7 DAYS WITH P.CLOUDY (3-6)/8 8.8 7.7 8.6 8.5 5.8 1.4 6.3 4.2 1.1 1.6 6.4 7.1 67.5 DAYS WITH CLOUDY (7-8)/8 4.6 3.9 5.6 3.2 0.6 0.1 0.2 0.1 0.0 0.2 1.5 3.9 23.9 DAYS WITH VISIBILITY =< 2 KM 4.6 2.0 2.2 0.4 0.6 0.1 0.8 0.7 0.6 0.1 0.5 4.6 17.2 DURATION OF SUNSHINE HOURS 224.0 223.3 248.3 287.7 342.3 353.2 327.8 316.8 303.6 304.6 263.7 235.7 3431.0 ======================================================================================================================= 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 CLIMATOLOGICAL NORMALS FOR THE PERIOD 1989-2005 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL MEAN QFE PRESSURE IN HPA 926.1 925.0 923.2 921.4 918.1 913.4 911.1 913.3 917.9 923.3 925.9 927.2 920.5 MAX. QFE PRESSURE IN HPA 935.0 935.4 932.2 929.0 925.8 921.8 918.7 919.9 928.4 930.3 934.7 933.7 935.4 YEAR-DAY 92-10 91-16 3- 3 94-16 92-10 95- 2 96- 3 2-29 94-24 93-17 3-25 1-28 91-16 MIN. QFE PRESSURE IN HPA 913.6 916.7 915.3 914.5 909.7 904.2 903.1 905.7 908.6 916.4 917.6 919.0 903.1 YEAR-DAY 97-17 3-17 97-25 2- 3 1-26 5-28 95-20 95- 8 0- 1 98- 1 90- 1 94- 4 95-20 MEAN QNH PRESSURE IN HPA 1017.8 1016.5 1014.6 1012.7 1009.1 1004.0 1001.6 1004.0 1008.9 1014.8 1017.6 1018.9 1011.7 MAX. QNH PRESSURE IN HPA 1027.4 1027.8 1024.4 1020.9 1017.4 1013.1 1009.8 1011.1 1020.2 1022.3 1027.0 1026.0 1027.8 YEAR-DAY 92-10 91-16 3- 3 94-16 92-10 95- 2 96- 3 2-29 94-24 93-17 3-25 1-28 91-16 MIN. QNH PRESSURE IN HPA 1004.3 1007.6 1006.1 1005.2 1000.1 994.1 992.9 995.7 998.9 1007.3 1008.6 1010.1 992.9 YEAR-DAY 97-17 3-17 97-25 2- 3 1-26 5-28 95-20 95- 8 0- 1 98- 1 90- 1 94- 4 95-20 MEAN QFF PRESSURE IN HPA 1017.0 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1017.0 MAX. QFF PRESSURE IN HPA 1025.6 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1025.6 YEAR-DAY 94-28 **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** 94-28 MIN. QFF PRESSURE IN HPA 1010.2 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1010.2 YEAR-DAY 94- 6 **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** 94- 6 PRESSURE AT HOUR 0000 UTC. MEAN QFE PRESSURE IN HPA 926.3 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 926.3 MAX. QFE PRESSURE IN HPA 929.2 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 929.2 YEAR-DAY 94-20 **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** 94-20 MIN. QFE PRESSURE IN HPA 921.6 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 921.6 YEAR-DAY 94- 6 **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** 94- 6 MEAN QNH PRESSURE IN HPA 1018.0 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1018.0 MAX. QNH PRESSURE IN HPA 1021.1 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1021.1 YEAR-DAY 94-20 **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** 94-20 MIN. QNH PRESSURE IN HPA 1012.9 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1012.9 YEAR-DAY 94- 6 **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** 94- 6 MEAN QFF PRESSURE IN HPA 1016.8 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1016.8 MAX. QFF PRESSURE IN HPA 1020.7 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1020.7 YEAR-DAY 94-20 **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** 94-20 MIN. QFF PRESSURE IN HPA 1010.2 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1010.2 YEAR-DAY 94- 6 **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** 94- 6 PRESSURE AT HOUR 0300 UTC. MEAN QFE PRESSURE IN HPA 926.2 925.1 923.4 921.9 918.8 914.4 912.2 914.4 918.8 924.0 926.4 927.4 921.1 MAX. QFE PRESSURE IN HPA 933.2 934.2 930.7 928.0 924.4 921.0 918.5 918.9 927.0 929.2 932.2 932.6 934.2 YEAR-DAY 92-10 91-16 3- 3 3- 8 94-15 95- 3 96- 3 2-30 94-23 93-30 3-25 93-26 91-16 MIN. QFE PRESSURE IN HPA 916.5 919.0 917.0 916.0 911.7 907.8 905.9 908.5 910.9 918.8 920.0 920.0 905.9 YEAR-DAY 99-18 96- 5 99- 2 2- 4 1-26 5-28 95-17 94- 1 0- 1 98- 1 90- 1 94- 4 95-17 MEAN QNH PRESSURE IN HPA 1017.9 1016.7 1014.8 1013.2 1009.9 1005.1 1002.7 1005.1 1009.8 1015.5 1018.0 1019.1 1012.3 MAX. QNH PRESSURE IN HPA 1025.4 1026.5 1022.7 1019.8 1015.9 1012.3 1009.6 1010.0 1018.7 1021.1 1024.4 1024.8 1026.5 YEAR-DAY 92-10 91-16 3- 3 3- 8 94-15 95- 3 96- 3 2-30 94-23 93-30 3-25 93-26 91-16 MIN. QNH PRESSURE IN HPA 1007.4 1010.1 1007.9 1006.9 1002.2 998.0 996.0 998.8 1001.4 1009.9 1011.2 1011.2 996.0 YEAR-DAY 99-18 96- 5 99- 2 2- 4 1-26 5-28 95-17 94- 1 0- 1 98- 1 90- 1 94- 4 95-17 MEAN QFF PRESSURE IN HPA 1017.8 1015.8 1012.7 1009.1 1003.9 997.8 994.8 997.5 1003.6 1011.2 1016.0 1018.5 1008.2 MAX. QFF PRESSURE IN HPA 1027.6 1027.7 1023.0 1016.9 1011.2 1005.5 1002.3 1004.8 1014.4 1017.7 1023.9 1025.0 1027.7 YEAR-DAY 92-10 91-16 3- 3 98-12 92-14 95- 2 96- 3 96-27 94-24 3-29 96-16 96- 8 91-16 MIN. QFF PRESSURE IN HPA 1006.0 1008.1 1003.9 1002.5 995.8 990.5 987.4 990.6 994.6 1003.2 1008.2 1007.5 987.4 YEAR-DAY 99-18 96- 5 3-13 98-23 1-26 97-29 95-17 94- 1 0- 1 98- 1 90- 1 94- 4 95-17 ======================================================================================================================= 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 CLIMATOLOGICAL NORMALS FOR THE PERIOD 1989-2005 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 0600 UTC. MEAN QFE PRESSURE IN HPA 927.8 926.7 924.8 923.1 919.7 914.9 912.7 915.1 919.7 925.3 927.7 928.9 922.2 MAX. QFE PRESSURE IN HPA 935.0 935.4 932.2 928.8 925.8 921.8 918.7 919.9 928.4 930.3 934.7 933.7 935.4 YEAR-DAY 92-10 91-16 3- 3 98-12 92-10 95- 2 96- 3 2-29 94-24 93-17 3-25 1-28 91-16 MIN. QFE PRESSURE IN HPA 919.0 919.9 918.1 918.0 912.3 908.0 906.6 909.4 911.7 919.7 921.3 921.0 906.6 YEAR-DAY 97-17 96- 5 97-25 90-16 1-26 5-28 95-17 94- 3 0- 1 0- 1 90- 1 94- 4 95-17 MEAN QNH PRESSURE IN HPA 1019.6 1018.4 1016.4 1014.5 1010.9 1005.7 1003.2 1005.8 1010.9 1016.8 1019.5 1020.8 1013.5 MAX. QNH PRESSURE IN HPA 1027.4 1027.8 1024.4 1020.7 1017.4 1013.1 1009.8 1011.1 1020.2 1022.3 1027.0 1026.0 1027.8 YEAR-DAY 92-10 91-16 3- 3 98-12 92-10 95- 2 96- 3 2-29 94-24 93-17 3-25 1-28 91-16 MIN. QNH PRESSURE IN HPA 1010.1 1011.1 1009.1 1009.0 1002.9 998.2 996.7 999.7 1002.2 1010.9 1012.6 1012.3 996.7 YEAR-DAY 97-17 96- 5 97-25 90-16 1-26 5-28 95-17 94- 3 0- 1 0- 1 90- 1 94- 4 95-17 MEAN QFF PRESSURE IN HPA 1019.2 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1019.2 MAX. QFF PRESSURE IN HPA 1023.4 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1023.4 YEAR-DAY 94-19 **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** 94-19 MIN. QFF PRESSURE IN HPA 1013.7 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1013.7 YEAR-DAY 94- 6 **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** 94- 6 PRESSURE AT HOUR 0900 UTC. MEAN QFE PRESSURE IN HPA 926.5 925.5 923.8 922.0 918.6 913.8 911.6 913.8 918.3 923.6 926.1 927.4 920.9 MAX. QFE PRESSURE IN HPA 933.4 934.0 931.0 929.0 924.6 920.8 917.9 918.0 927.0 928.6 932.6 933.0 934.0 YEAR-DAY 94-28 91-15 97-11 94-16 94-14 95- 2 96- 3 99-19 94-23 93-30 3-25 93-26 91-15 MIN. QFE PRESSURE IN HPA 914.2 918.9 917.6 917.0 911.2 907.0 905.2 907.8 910.5 918.0 919.2 920.0 905.2 YEAR-DAY 97-17 98-12 97-25 90-16 1-26 5-28 95-20 94- 1 0- 1 98- 1 90- 1 94- 4 95-20 MEAN QNH PRESSURE IN HPA 1018.2 1017.1 1015.2 1013.3 1009.6 1004.5 1002.1 1004.5 1009.4 1015.1 1017.8 1019.2 1012.2 MAX. QNH PRESSURE IN HPA 1025.6 1026.3 1023.1 1020.9 1016.1 1012.0 1008.9 1009.0 1018.7 1020.5 1024.8 1025.2 1026.3 YEAR-DAY 94-28 91-15 97-11 94-16 94-14 95- 2 96- 3 99-19 94-23 93-30 3-25 93-26 91-15 MIN. QNH PRESSURE IN HPA 1004.9 1010.0 1008.6 1007.9 1001.7 997.1 995.2 998.0 1000.9 1009.0 1010.3 1011.2 995.2 YEAR-DAY 97-17 98-12 97-25 90-16 1-26 5-28 95-20 94- 1 0- 1 98- 1 90- 1 94- 4 95-20 MEAN QFF PRESSURE IN HPA 1017.2 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1017.2 MAX. QFF PRESSURE IN HPA 1021.2 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1021.2 YEAR-DAY 94-19 **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** 94-19 MIN. QFF PRESSURE IN HPA 1012.6 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1012.6 YEAR-DAY 94- 6 **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** 94- 6 PRESSURE AT HOUR 1200 UTC. MEAN QFE PRESSURE IN HPA 924.9 923.6 921.9 920.1 916.8 912.2 909.8 911.9 916.4 921.8 924.5 925.8 919.1 MAX. QFE PRESSURE IN HPA 933.4 932.1 929.7 926.6 923.0 919.0 916.2 916.2 925.6 926.6 932.0 931.4 933.4 YEAR-DAY 94-28 91-15 97-11 94-16 94-14 95- 1 96- 3 98-28 94-23 94-18 3-25 91- 7 94-28 MIN. QFE PRESSURE IN HPA 913.6 917.2 915.3 914.5 909.9 905.0 903.1 906.1 908.8 916.4 917.6 919.0 903.1 YEAR-DAY 97-17 3-17 97-25 2- 3 1-26 5-28 95-20 94- 1 0- 1 98- 1 90- 1 94- 4 95-20 MEAN QNH PRESSURE IN HPA 1016.4 1015.1 1013.2 1011.3 1007.7 1002.7 1000.2 1002.4 1007.3 1013.2 1016.0 1017.4 1010.2 MAX. QNH PRESSURE IN HPA 1025.6 1024.2 1021.6 1018.3 1014.4 1010.1 1007.1 1007.1 1017.2 1018.3 1024.1 1023.5 1025.6 YEAR-DAY 94-28 91-15 97-11 94-16 94-14 95- 1 96- 3 98-28 94-23 94-18 3-25 91- 7 94-28 MIN. QNH PRESSURE IN HPA 1004.3 1008.2 1006.1 1005.2 1000.3 995.0 992.9 996.2 999.1 1007.3 1008.6 1010.1 992.9 YEAR-DAY 97-17 3-17 97-25 2- 3 1-26 5-28 95-20 94- 1 0- 1 98- 1 90- 1 94- 4 95-20 MEAN QFF PRESSURE IN HPA 1015.3 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1015.3 MAX. QFF PRESSURE IN HPA 1019.3 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1019.3 YEAR-DAY 94-19 **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** 94-19 MIN. QFF PRESSURE IN HPA 1011.1 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1011.1 YEAR-DAY 94- 5 **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** 94- 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 CLIMATOLOGICAL NORMALS FOR THE PERIOD 1989-2005 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 1500 UTC. MEAN QFE PRESSURE IN HPA 925.4 924.0 922.0 920.1 916.5 911.7 909.5 911.7 916.4 922.1 924.9 926.4 919.2 MAX. QFE PRESSURE IN HPA 932.0 932.2 930.0 926.5 922.2 919.0 916.5 918.6 925.4 928.0 932.3 932.9 932.9 YEAR-DAY 94-28 91-15 97-11 3- 7 94-14 95- 2 5-20 96-26 94-23 93-29 3-25 91- 7 91- 7 MIN. QFE PRESSURE IN HPA 916.2 916.7 915.3 914.5 909.7 904.2 904.0 905.7 908.6 916.8 917.9 919.8 904.0 YEAR-DAY 97-17 3-17 97-25 2- 3 1-26 5-28 95-17 95- 8 0- 1 98- 3 90- 1 4-21 95-17 MEAN QNH PRESSURE IN HPA 1017.0 1015.5 1013.4 1011.2 1007.4 1002.3 999.8 1002.2 1007.3 1013.4 1016.5 1018.1 1010.3 MAX. QNH PRESSURE IN HPA 1024.1 1024.4 1022.0 1018.2 1013.6 1010.1 1007.4 1009.7 1017.0 1019.8 1024.5 1025.1 1025.1 YEAR-DAY 94-28 91-15 97-11 3- 7 94-14 95- 2 5-20 96-26 94-23 93-29 3-25 91- 7 91- 7 MIN. QNH PRESSURE IN HPA 1007.1 1007.6 1006.1 1005.2 1000.1 994.1 993.9 995.7 998.9 1007.7 1008.9 1011.0 993.9 YEAR-DAY 97-17 3-17 97-25 2- 3 1-26 5-28 95-17 95- 8 0- 1 98- 3 90- 1 4-21 95-17 MEAN QFF PRESSURE IN HPA 1016.9 1014.6 1011.2 1007.1 1001.3 994.9 991.8 994.6 1001.0 1009.1 1014.4 1017.4 1006.2 MAX. QFF PRESSURE IN HPA 1025.5 1025.2 1021.3 1014.0 1008.9 1002.8 1000.4 1004.1 1012.4 1016.2 1024.3 1024.1 1025.5 YEAR-DAY 92-10 91-15 3- 3 3- 7 92-14 95- 2 5-20 96-26 94-23 93-29 3-25 3-14 92-10 MIN. QFF PRESSURE IN HPA 1006.0 1006.8 1003.7 1000.7 993.4 986.6 984.9 987.7 992.4 1001.5 1006.0 1009.9 984.9 YEAR-DAY 97-17 3-17 97-25 1-28 0-28 5-28 95-17 5- 7 0- 1 98- 1 90- 1 94- 4 95-17 PRESSURE AT HOUR 1800 UTC. MEAN QFE PRESSURE IN HPA 926.2 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 926.2 MAX. QFE PRESSURE IN HPA 928.8 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 928.8 YEAR-DAY 94-19 **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** 94-19 MIN. QFE PRESSURE IN HPA 923.4 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 923.4 YEAR-DAY 94-16 **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** 94-16 MEAN QNH PRESSURE IN HPA 1017.8 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1017.8 MAX. QNH PRESSURE IN HPA 1020.7 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1020.7 YEAR-DAY 94-19 **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** 94-19 MIN. QNH PRESSURE IN HPA 1014.8 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1014.8 YEAR-DAY 94-16 **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** 94-16 MEAN QFF PRESSURE IN HPA 1017.3 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1017.3 MAX. QFF PRESSURE IN HPA 1021.0 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1021.0 YEAR-DAY 94-19 **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** 94-19 MIN. QFF PRESSURE IN HPA 1013.9 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1013.9 YEAR-DAY 94- 6 **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** 94- 6 PRESSURE AT HOUR 2100 UTC. MEAN QFE PRESSURE IN HPA 926.4 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 926.4 MAX. QFE PRESSURE IN HPA 929.2 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 929.2 YEAR-DAY 94-19 **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** 94-19 MIN. QFE PRESSURE IN HPA 922.0 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 922.0 YEAR-DAY 94- 6 **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** 94- 6 MEAN QNH PRESSURE IN HPA 1018.0 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1018.0 MAX. QNH PRESSURE IN HPA 1021.1 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1021.1 YEAR-DAY 94-19 **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** 94-19 MIN. QNH PRESSURE IN HPA 1013.3 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1013.3 YEAR-DAY 94- 6 **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** 94- 6 MEAN QFF PRESSURE IN HPA 1016.7 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1016.7 MAX. QFF PRESSURE IN HPA 1020.7 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1020.7 YEAR-DAY 94-19 **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** 94-19 MIN. QFF PRESSURE IN HPA 1011.6 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1011.6 YEAR-DAY 94- 5 **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** 94- 5 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION LAR (40873) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) FORM 1 LATITUDE 27 41 N LONGITUDE 54 17 E DATA PROCESSING CENTER ELEVATION 792.0 M AVERAGE OF DRY BULB TEMPERATURE IN C. YEAR JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL 1989 ***** ***** ***** ***** ***** ***** ***** 35.3 31.9 27.0 20.7 13.4 ****** 1990 11.7 14.1 20.1 25.8 33.5 36.2 ***** 36.4 33.4 27.1 20.7 15.8 ****** 1991 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 1992 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 1993 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 1994 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 1995 14.6 15.5 17.5 23.4 31.1 35.2 36.0 35.5 31.3 26.3 20.0 13.0 25.0 1996 11.5 14.9 16.9 24.5 31.6 35.4 36.9 35.6 33.2 26.5 18.9 15.2 25.1 1997 13.0 15.9 16.4 22.6 30.5 35.3 37.6 36.2 33.1 27.2 18.7 14.2 25.1 1998 11.8 14.7 19.2 26.7 33.0 36.6 37.7 36.6 33.5 28.0 21.6 18.4 26.5 1999 13.6 16.3 18.8 27.9 33.4 37.4 37.2 36.4 33.2 28.2 21.5 15.2 26.6 2000 14.3 16.0 20.5 29.4 34.0 36.2 37.3 36.3 32.6 27.2 19.0 14.9 26.5 2001 12.1 15.4 21.2 28.2 34.2 36.6 37.9 35.7 33.0 28.3 20.2 18.0 26.7 2002 12.7 15.7 21.2 26.2 33.8 36.4 37.6 36.8 33.0 28.3 20.4 14.5 26.4 2003 12.9 16.4 19.9 26.0 32.2 37.3 36.8 36.6 33.2 27.9 19.7 15.2 26.2 2004 14.3 17.7 22.8 26.3 32.7 35.9 37.1 36.6 32.4 27.8 21.2 13.8 26.5 2005 11.7 13.4 19.2 27.4 31.1 36.4 37.2 36.6 33.3 27.6 20.4 17.2 26.0 MEAN 12.5 15.1 18.9 25.9 32.2 36.1 37.1 36.1 32.6 27.2 20.3 15.1 25.7 =============================================================================================== TEHRAN 2006,MAY M.(S & A) STATION LAR (40873) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) FORM 2 LATITUDE 27 41 N LONGITUDE 54 17 E DATA PROCESSING CENTER ELEVATION 792.0 M AVERAGE OF MINIMUM TEMPERATURE IN C. YEAR JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL 1989 ***** ***** ***** ***** ***** ***** ***** 25.2 21.1 14.4 10.9 6.0 ****** 1990 5.3 5.9 8.8 15.0 20.3 22.4 ***** 26.1 21.6 15.4 9.1 4.8 ****** 1991 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 1992 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 1993 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 1994 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 1995 4.6 8.2 9.8 13.7 18.9 21.9 25.8 25.8 19.6 14.1 8.3 8.0 14.9 1996 5.2 7.7 10.7 12.9 18.2 22.2 24.9 24.9 21.4 14.4 7.1 3.0 14.4 1997 3.7 6.5 8.9 12.8 18.3 23.2 27.5 25.4 20.5 17.0 10.4 6.1 15.0 1998 5.1 6.4 11.2 15.1 20.0 23.3 26.9 26.3 22.4 15.8 9.2 6.0 15.6 1999 5.7 9.3 9.0 15.2 20.0 24.4 26.8 25.4 22.7 16.5 10.5 2.9 15.7 2000 5.5 5.4 8.9 16.6 20.2 22.7 25.5 25.5 21.4 15.9 10.6 6.6 15.4 2001 2.3 5.0 10.4 15.1 21.1 24.1 27.0 24.4 21.9 16.1 8.7 9.1 15.4 2002 5.3 6.4 11.1 15.5 20.5 23.5 25.7 26.2 21.8 16.6 10.1 6.6 15.8 2003 4.4 8.7 10.3 15.1 20.2 23.9 28.1 26.5 21.8 16.2 8.7 6.0 15.8 2004 7.0 7.6 11.6 15.7 20.1 22.7 26.1 26.4 21.6 15.8 11.0 6.9 16.0 2005 4.5 6.3 10.0 15.1 18.7 23.0 26.6 25.4 20.8 15.4 10.6 6.3 15.2 MEAN 4.8 6.7 9.8 14.6 19.6 22.9 26.3 25.6 21.3 15.5 9.6 6.1 15.2 =============================================================================================== TEHRAN 2006,MAY M.(S & A) STATION LAR (40873) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) FORM 3 LATITUDE 27 41 N LONGITUDE 54 17 E DATA PROCESSING CENTER ELEVATION 792.0 M AVERAGE OF MAXIMUM TEMPERATURE IN C. YEAR JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL 1989 ***** ***** ***** ***** ***** ***** ***** 41.5 38.2 34.0 27.1 18.8 ****** 1990 17.0 19.7 26.9 31.9 39.5 42.6 ***** 42.5 40.0 33.5 27.9 23.3 ****** 1991 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 1992 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 1993 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 1994 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 1995 21.0 20.1 22.2 28.8 36.4 40.9 42.0 41.4 37.7 32.9 26.9 16.8 30.6 1996 16.0 19.8 21.2 30.4 37.3 41.1 42.3 41.7 39.7 33.1 25.8 22.7 30.9 1997 19.0 22.0 21.2 28.0 35.9 40.9 43.5 42.5 39.8 33.5 24.0 19.8 30.8 1998 16.7 20.3 24.2 32.4 38.5 42.2 43.5 42.4 39.7 34.5 28.9 26.4 32.5 1999 19.2 21.4 24.6 34.0 39.2 43.4 42.6 42.3 39.3 34.6 28.0 23.3 32.7 2000 20.0 22.6 27.2 35.4 40.1 41.9 42.8 41.7 38.4 33.5 24.7 20.8 32.4 2001 18.9 22.1 27.3 34.1 39.9 42.1 43.5 41.8 39.1 34.9 27.2 23.8 32.9 2002 17.9 21.7 27.0 31.6 39.4 41.8 43.3 42.5 39.4 34.8 26.4 19.8 32.1 2003 19.0 21.7 25.6 32.1 37.5 43.0 42.1 42.2 39.1 34.1 26.2 21.0 32.0 2004 19.3 24.2 28.9 31.8 38.4 41.7 42.7 42.7 38.6 34.3 27.7 18.8 32.4 2005 17.0 18.5 24.9 33.4 36.5 42.2 42.8 42.4 39.8 33.8 26.6 24.0 31.8 MEAN 18.1 20.8 24.6 31.8 38.0 42.2 43.1 42.1 38.9 33.7 26.8 21.2 31.8 =============================================================================================== TEHRAN 2006,MAY M.(S & A) STATION LAR (40873) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) FORM 4 LATITUDE 27 41 N LONGITUDE 54 17 E DATA PROCESSING CENTER ELEVATION 792.0 M DIFFERENCE BETWEEN AVERAGE MAXIMUM AND MINIMUM TEMPERATURE IN C. YEAR JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL 1989 ***** ***** ***** ***** ***** ***** ***** 16.3 17.1 19.6 16.2 12.8 ****** 1990 11.7 13.8 18.1 16.9 19.2 20.2 ***** 16.4 18.4 18.1 18.8 18.5 ****** 1991 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 1992 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 1993 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 1994 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 1995 16.4 11.9 12.4 15.1 17.5 19.0 16.2 15.6 18.1 18.8 18.6 8.8 15.7 1996 10.8 12.1 10.5 17.5 19.1 18.9 17.4 16.8 18.3 18.7 18.7 19.7 16.5 1997 15.3 15.5 12.3 15.2 17.6 17.7 16.0 17.1 19.3 16.5 13.6 13.7 15.8 1998 11.6 13.9 13.0 17.3 18.5 18.9 16.6 16.1 17.3 18.7 19.7 20.4 16.9 1999 13.5 12.1 15.6 18.8 19.2 19.0 15.8 16.9 16.6 18.1 17.5 20.4 17.0 2000 14.5 17.2 18.3 18.8 19.9 19.2 17.3 16.2 17.0 17.6 14.1 14.2 17.0 2001 16.6 17.1 16.9 19.0 18.8 18.0 16.5 17.4 17.2 18.8 18.5 14.7 17.5 2002 12.6 15.3 15.9 16.1 18.9 18.3 17.6 16.3 17.6 18.2 16.3 13.2 16.3 2003 14.6 13.0 15.3 17.0 17.3 19.1 14.0 15.7 17.3 17.9 17.5 15.0 16.2 2004 12.3 16.6 17.3 16.1 18.3 19.0 16.6 16.3 17.0 18.5 16.7 11.9 16.4 2005 12.5 12.2 14.9 18.3 17.8 19.2 16.2 17.0 19.0 18.4 16.0 17.7 16.6 MEAN 13.3 14.1 14.8 17.2 18.4 19.3 16.8 16.5 17.6 18.2 17.2 15.1 16.6 =============================================================================================== TEHRAN 2006,MAY M.(S & A) STATION LAR (40873) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) FORM 5 LATITUDE 27 41 N LONGITUDE 54 17 E DATA PROCESSING CENTER ELEVATION 792.0 M AVERAGE OF MEAN DAILY TEMPERATURE IN C. YEAR JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL 1989 ***** ***** ***** ***** ***** ***** ***** 33.3 29.6 24.2 19.0 12.4 ****** 1990 11.2 12.8 17.8 23.5 29.9 32.5 ***** 34.3 30.8 24.5 18.5 14.1 ****** 1991 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 1992 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 1993 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 1994 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 1995 12.8 14.2 16.0 21.3 27.7 31.4 33.9 33.6 28.7 23.5 17.6 12.4 22.7 1996 10.6 13.8 15.9 21.6 27.8 31.6 33.6 33.3 30.5 23.7 16.5 12.9 22.7 1997 11.4 14.2 15.1 20.4 27.1 32.0 35.5 34.0 30.1 25.2 17.2 13.0 22.9 1998 10.9 13.3 17.7 23.8 29.2 32.8 35.2 34.4 31.0 25.2 19.1 16.2 24.1 1999 12.4 15.3 16.8 24.6 29.6 33.9 34.7 33.9 31.0 25.5 19.2 13.1 24.2 2000 12.8 14.0 18.0 26.0 30.2 32.3 34.1 33.6 29.9 24.7 17.6 13.7 23.9 2001 10.6 13.5 18.8 24.6 30.5 33.1 35.3 33.1 30.5 25.5 18.0 16.4 24.2 2002 11.6 14.1 19.0 23.5 29.9 32.7 34.5 34.4 30.6 25.7 18.3 13.2 24.0 2003 11.7 15.2 18.0 23.6 28.8 33.5 35.1 34.3 30.5 25.1 17.4 13.5 23.9 2004 13.2 15.9 20.2 23.7 29.2 32.2 34.4 34.5 30.1 25.0 19.3 12.8 24.2 2005 10.8 12.4 17.4 24.3 27.6 32.6 34.7 33.9 30.3 24.6 18.6 15.2 23.5 MEAN 11.5 13.7 17.2 23.2 28.8 32.5 34.7 33.9 30.1 24.6 18.2 13.7 23.5 SD 1.13 1.15 1.54 1.59 1.08 0.67 0.60 0.49 0.79 0.74 0.81 1.25 0.99 =============================================================================================== TEHRAN 2006,MAY M.(S & A) STATION LAR (40873) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) FORM 6 LATITUDE 27 41 N LONGITUDE 54 17 E DATA PROCESSING CENTER ELEVATION 792.0 M TEMPERATURE RECORDS LOWEST IN C. YEAR JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL 1989 ***** ***** ***** ***** ***** ***** ***** 21.6 16.6 8.8 5.5 1.8 ****** DAY ** ** ** ** ** ** ** 7 30 31 26 26 1990 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 1991 -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 1992 -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 1993 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 1994 -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 1995 1.0 2.8 5.8 8.8 13.8 20.0 20.4 22.8 15.4 9.8 0.6 3.8 0.6 DAY 2 12 2 8 11 1 25 31 27 16 28 31 1996 -0.4 2.8 6.0 7.0 13.0 18.0 21.2 19.4 17.8 8.4 3.6 0.0 -0.4 DAY 15 24 15 7 1 7 7 27 20 22 16 7 1997 0.2 0.8 3.2 9.0 13.2 20.0 23.6 20.0 17.4 8.8 5.2 2.6 0.2 DAY 5 8 2 13 7 7 3 8 16 28 26 16 1998 -1.6 2.0 4.8 9.8 14.4 20.8 20.6 23.0 18.0 12.2 5.0 0.4 -1.6 DAY 15 14 4 7 3 14 19 14 21 31 29 10 1999 -2.0 5.0 3.8 10.4 15.0 21.6 23.4 21.4 18.6 13.0 3.0 -1.0 -2.0 DAY 5 1 9 12 5 1 3 24 24 25 30 21 2000 0.2 1.0 4.0 9.0 18.2 18.0 22.2 20.6 17.2 12.4 4.6 1.4 0.2 DAY 3 10 8 1 4 16 21 23 23 23 23 30 2001 -4.0 -2.0 5.4 11.0 18.0 21.2 24.0 21.4 17.4 12.8 3.8 4.6 -4.0 DAY 29 1 1 15 7 13 1 15 20 18 22 29 2002 0.2 0.4 6.4 10.6 15.4 18.4 22.8 20.2 18.4 12.0 4.0 -1.8 -1.8 DAY 28 6 2 6 7 1 2 29 21 28 24 31 2003 1.0 2.4 2.6 11.0 16.0 21.4 23.6 23.6 18.2 11.8 2.2 0.4 0.4 DAY 18 2 3 15 1 8 2 30 20 29 27 15 2004 1.2 0.4 5.4 10.6 16.4 19.6 21.2 23.0 14.8 13.0 4.2 0.4 0.4 DAY 30 10 17 3 7 1 20 27 30 30 30 30 2005 -0.6 -0.4 5.8 9.0 13.4 19.0 22.2 22.6 14.6 12.0 4.6 1.8 -0.6 DAY 14 11 26 9 7 1 25 23 30 25 11 28 1989-2005 -4.8 -2.0 1.0 6.6 10.2 16.0 19.0 19.4 13.0 8.4 0.6 -3.6 -4.8 YEAR-DAY 91- 8 1- 1 92- 1 92- 7 91- 6 93- 5 91- 1 96-27 92-11 96-22 95-28 94- 9 91 =============================================================================================== TEHRAN 2006,MAY M.(S & A) STATION LAR (40873) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) FORM 7 LATITUDE 27 41 N LONGITUDE 54 17 E DATA PROCESSING CENTER ELEVATION 792.0 M TEMPERATURE RECORDS HIGHEST IN C. YEAR JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL 1989 ***** ***** ***** ***** ***** ***** ***** 43.4 41.5 38.5 32.5 26.0 ****** DAY ** ** ** ** ** ** ** 28 7 10 1 1 1990 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 1991 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 1992 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 1993 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 1994 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 1995 22.4 24.6 28.2 32.4 39.0 44.6 45.6 43.8 42.6 35.2 31.4 22.2 45.6 DAY 19 4 26 20 28 13 9 8 1 3 4 2 1996 21.2 25.6 26.4 35.4 42.0 43.6 45.0 44.2 43.0 38.0 31.4 24.0 45.0 DAY 31 9 31 23 31 5 11 12 11 1 1 14 1997 23.4 28.4 25.4 32.0 41.0 44.8 46.6 45.8 42.6 38.8 28.8 23.0 46.6 DAY 14 22 5 28 31 16 20 1 5 1 11 8 1998 20.0 25.6 34.2 36.0 43.2 45.0 47.0 45.0 41.8 39.4 31.0 30.6 47.0 DAY 21 7 29 22 28 30 11 20 2 1 4 13 1999 26.0 26.0 33.0 38.8 41.8 44.6 45.2 44.0 42.4 37.0 32.4 25.6 45.2 DAY 1 28 26 28 13 3 18 9 4 2 1 11 2000 23.0 29.4 32.2 38.6 43.2 45.0 45.0 43.4 42.0 37.8 32.6 27.0 45.0 DAY 3 27 22 21 29 30 8 9 9 1 1 4 2001 21.8 26.0 31.2 38.6 43.4 44.2 46.2 43.6 43.4 38.8 32.2 27.8 46.2 DAY 16 28 31 28 18 22 9 4 1 2 5 8 2002 23.0 27.0 31.6 39.4 42.6 44.4 45.8 45.0 42.2 37.8 29.8 24.6 45.8 DAY 5 25 27 28 24 16 5 5 4 5 13 9 2003 24.0 25.8 31.6 36.8 40.2 45.0 45.6 43.4 41.4 37.4 32.0 25.4 45.6 DAY 9 13 25 9 22 24 4 9 3 1 1 6 2004 22.8 28.6 33.6 36.6 42.0 43.8 45.4 45.6 41.8 37.4 30.2 23.8 45.6 DAY 7 24 9 30 22 27 6 12 11 7 8 1 2005 23.2 22.2 31.0 37.0 39.6 47.0 44.6 45.2 42.4 37.0 32.8 27.6 47.0 DAY 2 28 31 25 19 25 16 5 4 11 1 7 1989-2005 27.2 29.4 34.2 39.4 44.6 48.6 47.0 47.8 43.6 39.4 34.2 30.6 48.6 YEAR-DAY 94- 4 0-27 98-29 2-28 92-30 92-25 91- 2 91- 9 91-10 98- 1 92-14 98-13 92 =============================================================================================== TEHRAN 2006,MAY M.(S & A) STATION LAR (40873) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) FORM 8 LATITUDE 27 41 N LONGITUDE 54 17 E DATA PROCESSING CENTER ELEVATION 792.0 M 0C COOLING DEGREE DAYS (BASE 21) YEAR JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL 1989 ***** ***** ***** ***** ***** ***** ***** 297.1 258.6 101.5 4.7 0.0 ****** 1990 0.0 0.0 3.0 94.8 277.2 345.2 ***** 410.8 294.7 107.3 1.4 0.0 ****** 1991 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 1992 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 1993 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 1994 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 1995 0.0 0.0 0.2 28.1 206.6 312.3 399.7 390.6 230.2 77.6 1.6 0.0 1646.9 1996 0.0 0.0 0.0 44.7 209.6 319.1 391.4 380.6 286.0 88.4 0.0 0.0 1719.9 1997 0.0 0.4 0.0 13.9 189.0 330.2 449.0 402.3 273.9 136.0 1.3 0.0 1796.1 1998 0.0 0.0 13.9 89.6 255.0 353.4 440.5 414.5 301.2 129.9 0.8 0.0 1998.8 1999 0.0 0.0 2.9 110.1 267.4 386.7 426.1 399.5 299.6 141.0 12.1 0.0 2045.4 2000 0.0 0.0 4.8 152.4 284.7 340.2 407.6 391.5 267.1 115.2 9.7 0.0 1973.2 2001 0.0 0.0 2.1 108.9 294.3 362.5 442.9 375.9 285.8 139.7 1.5 0.0 2013.6 2002 0.0 0.0 5.1 86.8 277.4 349.7 417.7 414.7 288.8 146.3 7.6 0.0 1994.1 2003 0.0 0.0 5.8 82.5 242.8 374.2 437.9 413.8 284.3 128.3 2.7 0.0 1972.3 2004 0.0 0.0 25.9 83.2 255.2 335.9 414.7 419.0 271.7 125.3 0.8 0.0 1931.7 2005 0.0 0.0 2.0 103.5 204.0 347.7 425.2 399.9 279.1 110.9 8.0 0.0 1880.3 MEAN 0.0 0.0 4.3 78.7 241.0 346.4 423.5 393.7 271.9 112.3 4.3 0.0 1876.1 =============================================================================================== TEHRAN 2006,MAY M.(S & A) STATION LAR (40873) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) FORM 9 LATITUDE 27 41 N LONGITUDE 54 17 E DATA PROCESSING CENTER ELEVATION 792.0 M 0C HEATING DEGREE DAYS (BASE 18) YEAR JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL 1989 ***** ***** ***** ***** ***** ***** ***** 0.0 0.0 0.0 14.9 173.6 ****** 1990 212.3 132.1 36.5 3.0 0.0 0.0 ***** 0.0 0.0 0.0 18.8 122.4 ****** 1991 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 1992 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 1993 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 1994 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 1995 161.6 108.2 66.7 0.7 0.0 0.0 0.0 0.0 0.0 0.0 49.1 174.1 560.4 1996 229.3 122.4 68.2 2.7 0.0 0.0 0.0 0.0 0.0 0.0 61.3 159.2 643.1 1997 205.3 114.1 91.4 3.4 0.0 0.0 0.0 0.0 0.0 0.0 47.1 156.4 617.6 1998 219.8 131.3 51.4 0.0 0.0 0.0 0.0 0.0 0.0 0.0 4.7 58.8 466.0 1999 172.6 77.9 66.6 0.0 0.0 0.0 0.0 0.0 0.0 0.0 15.9 151.9 484.9 2000 162.4 121.3 36.3 0.0 0.0 0.0 0.0 0.0 0.0 0.0 40.5 137.9 498.3 2001 230.0 125.4 10.4 0.0 0.0 0.0 0.0 0.0 0.0 0.0 25.8 51.0 442.6 2002 198.6 111.7 8.6 0.0 0.0 0.0 0.0 0.0 0.0 0.0 34.0 148.9 501.8 2003 194.9 82.9 36.8 0.0 0.0 0.0 0.0 0.0 0.0 0.0 43.7 139.2 497.5 2004 149.0 64.3 10.1 0.0 0.0 0.0 0.0 0.0 0.0 0.0 12.5 160.8 396.7 2005 224.7 157.5 38.7 0.0 0.0 0.0 0.0 0.0 0.0 0.0 24.8 88.1 533.7 MEAN 201.8 121.3 50.3 1.8 0.0 0.0 0.0 0.0 0.0 0.0 28.4 135.2 538.8 =============================================================================================== TEHRAN 2006,MAY M.(S & A) STATION LAR (40873) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) FORM 10 LATITUDE 27 41 N LONGITUDE 54 17 E DATA PROCESSING CENTER ELEVATION 792.0 M AVERAGE OF DEW POINT TEMPERATURE IN C. YEAR JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL 1989 ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** ****** 1990 ***** ***** ***** 5.5 8.8 3.9 ***** 15.6 15.0 5.8 1.9 1.8 ****** 1991 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 1992 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 1993 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 1994 -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 1995 2.9 6.1 7.8 12.2 9.6 18.5 18.2 14.9 11.9 8.7 2.9 8.2 10.2 1996 5.7 7.8 11.1 8.9 7.8 10.2 10.1 12.8 10.8 6.3 0.8 1.2 7.8 1997 3.5 2.2 7.2 9.0 8.2 12.2 16.3 16.1 9.6 9.2 8.7 6.4 9.1 1998 5.7 5.9 9.1 9.1 12.5 12.7 17.1 15.8 14.3 8.3 2.7 1.0 9.5 1999 3.7 9.3 3.8 6.0 11.6 10.3 15.9 15.5 15.7 9.7 8.5 0.0 9.2 2000 4.4 2.0 0.7 8.7 10.6 13.2 15.2 14.9 13.7 9.5 7.3 5.7 8.8 2001 2.4 1.7 7.3 4.8 9.8 10.8 14.3 14.9 14.0 8.4 4.3 8.6 8.5 2002 4.6 4.8 5.9 8.3 7.3 11.0 12.2 13.9 11.6 7.5 4.4 6.7 8.2 2003 4.8 6.3 6.1 9.7 11.2 12.1 18.0 17.2 13.2 8.5 2.0 5.4 9.5 2004 6.6 2.7 4.0 7.0 8.1 10.5 15.3 16.9 10.6 6.8 6.2 5.5 8.3 2005 4.9 5.8 8.7 7.1 5.6 8.3 16.0 15.3 12.2 8.6 7.0 3.4 8.6 MEAN 4.0 4.6 6.3 7.6 9.2 10.8 15.3 15.2 12.3 8.0 5.1 4.5 8.6 =============================================================================================== TEHRAN 2006,MAY M.(S & A) STATION LAR (40873) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) FORM 11 LATITUDE 27 41 N LONGITUDE 54 17 E DATA PROCESSING CENTER ELEVATION 792.0 M AVERAGE OF MIXING RATIO IN G/KG YEAR JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL 1989 ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** 1990 ***** ***** ***** 6.70 9.67 6.01 ***** 12.80 12.12 6.64 4.85 5.19 ***** 1991 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 1992 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 1993 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 1994 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 1995 5.24 6.63 7.51 10.13 8.97 16.50 15.30 12.44 9.93 8.41 5.37 7.51 9.49 1996 6.39 7.41 9.26 8.03 7.37 9.18 8.77 10.82 9.31 6.84 4.64 4.66 7.72 1997 5.44 5.04 7.22 8.12 7.58 10.05 13.57 13.25 8.43 8.20 7.87 6.66 8.45 1998 6.47 6.53 8.16 8.34 10.35 10.34 14.04 12.81 11.65 7.62 5.15 4.64 8.84 1999 5.69 8.17 5.68 6.71 9.83 8.92 13.16 12.47 12.66 8.34 7.80 4.36 8.65 2000 5.99 4.91 4.58 7.95 9.48 10.84 12.30 12.14 11.24 8.24 7.20 6.34 8.43 2001 5.05 4.81 7.20 6.00 8.59 9.16 11.73 12.18 11.18 7.70 5.85 7.74 8.10 2002 6.05 6.25 6.55 7.73 7.29 9.47 10.05 11.52 9.81 7.22 5.95 6.98 7.91 2003 6.00 6.85 6.84 8.45 9.33 10.02 14.77 13.94 10.74 7.79 5.05 6.31 8.84 2004 6.90 5.20 5.74 7.06 7.57 8.96 12.49 13.88 9.17 6.88 6.59 6.44 8.07 2005 6.03 6.54 7.92 7.09 6.57 7.81 13.16 12.47 10.18 7.80 7.00 5.42 8.17 MEAN 5.81 6.11 6.86 7.48 8.52 9.62 12.75 12.55 10.40 7.62 6.31 6.06 8.34 =============================================================================================== TEHRAN 2006,MAY M.(S & A) STATION LAR (40873) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) FORM 12 LATITUDE 27 41 N LONGITUDE 54 17 E DATA PROCESSING CENTER ELEVATION 792.0 M AVERAGE OF VAPOUR PRESSURE IN HPA YEAR JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL 1989 ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** 1990 ***** ***** ***** 9.80 13.90 8.73 ***** 18.39 17.51 9.75 7.17 7.65 ***** 1991 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 1992 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 1993 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 1994 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 1995 7.75 9.74 11.01 14.74 13.04 23.49 21.79 17.87 14.41 12.27 7.91 11.06 13.76 1996 9.41 10.87 13.51 11.73 10.76 13.27 12.67 15.60 13.50 10.03 6.84 6.90 11.26 1997 8.01 7.44 10.57 11.87 11.07 14.52 19.39 19.01 12.27 12.02 11.56 9.80 12.29 1998 9.52 9.60 11.95 12.17 15.02 14.95 20.07 18.42 16.83 11.15 7.60 6.86 12.84 1999 8.38 12.00 8.33 9.82 14.23 12.90 18.84 17.93 18.26 12.20 11.45 6.46 12.57 2000 8.81 7.24 6.74 11.61 13.73 15.62 17.67 17.47 16.25 12.05 10.58 9.34 12.26 2001 7.45 7.09 10.55 8.79 12.47 13.21 16.83 17.53 16.20 11.28 8.62 11.41 11.79 2002 8.92 9.19 9.61 11.29 10.61 13.67 14.51 16.57 14.25 10.58 8.76 10.27 11.52 2003 8.84 10.05 10.03 12.35 13.57 14.45 21.10 20.01 15.55 11.42 7.45 9.31 12.84 2004 10.14 7.67 8.45 10.34 11.03 12.96 17.94 19.90 13.33 10.11 9.70 9.48 11.75 2005 8.88 9.60 11.61 10.39 9.59 11.30 18.86 17.92 14.74 11.44 10.30 8.01 11.89 MEAN 8.56 8.98 10.06 10.94 12.38 13.87 18.26 18.04 15.07 11.16 9.29 8.93 12.13 =============================================================================================== TEHRAN 2006,MAY M.(S & A) STATION LAR (40873) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) FORM 13 LATITUDE 27 41 N LONGITUDE 54 17 E DATA PROCESSING CENTER ELEVATION 792.0 M AVERAGE OF SATURATION DEFICIT PRESSURE IN HPA YEAR JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL 1989 ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** 1990 ***** ***** ***** 25.69 40.49 54.53 ***** 44.64 36.34 28.12 18.88 11.61 ***** 1991 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 1992 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 1993 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 1994 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 1995 9.79 8.46 9.83 15.35 34.01 36.05 40.55 42.17 33.80 24.21 17.35 4.30 22.99 1996 4.71 6.68 6.32 20.92 38.02 46.68 52.19 45.12 40.10 26.78 16.84 11.61 26.33 1997 7.90 11.85 8.76 16.83 34.94 45.37 47.65 43.63 41.21 26.38 10.94 6.93 25.20 1998 4.81 8.05 11.69 24.72 37.88 49.00 47.62 45.39 37.36 29.18 20.07 15.93 27.64 1999 7.91 7.20 14.89 30.25 39.70 54.30 46.78 45.23 35.16 28.16 15.90 12.21 28.14 2000 8.19 12.23 19.12 31.74 42.12 47.12 48.52 45.18 35.30 25.94 12.51 8.68 28.05 2001 7.48 11.50 16.07 31.72 44.02 50.89 51.58 43.58 36.61 29.41 16.73 10.21 29.15 2002 6.38 9.73 16.83 25.04 44.77 49.92 53.27 48.04 38.81 30.18 16.62 7.08 28.89 2003 6.86 9.33 14.57 23.47 36.55 52.17 42.96 43.36 37.71 28.31 17.11 8.87 26.77 2004 6.77 13.89 21.17 25.60 40.91 48.96 47.64 43.84 37.69 29.37 16.95 6.89 28.31 2005 5.46 6.38 11.93 28.12 37.82 52.66 46.80 46.08 39.14 27.62 15.16 12.82 27.50 MEAN 6.77 9.21 13.03 24.55 38.16 48.83 47.41 44.17 36.69 27.04 16.02 9.38 26.77 =============================================================================================== TEHRAN 2006,MAY M.(S & A) STATION LAR (40873) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) FORM 14 LATITUDE 27 41 N LONGITUDE 54 17 E DATA PROCESSING CENTER ELEVATION 792.0 M AVERAGE OF RELATIVE HUMIDITY IN PERCENT YEAR JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL 1989 *** *** *** *** *** *** *** *** *** *** *** *** *** 1990 *** *** *** 32 27 16 *** 32 36 29 32 43 *** 1991 55 59 56 26 25 16 25 26 31 31 46 76 39 1992 76 64 57 46 28 23 25 28 25 30 35 66 42 1993 68 69 47 42 35 32 33 37 37 32 38 41 43 1994 45 32 48 28 28 24 41 40 39 45 58 48 40 1995 49 58 58 53 30 41 39 35 35 37 35 75 45 1996 71 67 72 42 26 26 22 30 30 31 34 42 41 1997 56 44 60 46 28 27 32 34 26 37 55 63 42 1998 70 59 57 36 31 26 32 32 34 31 31 34 39 1999 56 67 43 28 29 21 32 32 38 34 45 38 39 2000 55 41 29 30 27 27 29 30 35 35 50 58 37 2001 56 43 44 25 24 23 27 33 34 31 39 58 36 2002 62 53 41 35 22 24 24 29 31 29 37 63 38 2003 62 56 46 41 29 24 36 35 32 32 33 56 40 2004 63 41 33 32 24 23 30 35 29 29 41 62 37 2005 67 64 56 31 23 20 32 31 30 32 46 43 40 MEAN 61 54 50 36 27 25 31 32 33 33 41 54 39 =============================================================================================== TEHRAN 2006,MAY M.(S & A) STATION LAR (40873) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) FORM 15 LATITUDE 27 41 N LONGITUDE 54 17 E DATA PROCESSING CENTER ELEVATION 792.0 M AVERAGE OF MAXIMUM RELATIVE HUMIDITY IN PERCENT YEAR JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL 1989 *** *** *** *** *** *** *** *** *** *** *** *** *** 1990 *** *** 58 51 40 27 *** 46 58 52 54 64 *** 1991 77 85 83 52 40 29 42 47 57 51 70 94 61 1992 93 89 82 72 44 37 40 45 41 47 51 89 61 1993 92 90 78 71 56 47 48 53 62 52 56 65 64 1994 72 55 79 48 45 36 58 62 59 71 78 76 62 1995 74 85 87 77 47 51 57 65 64 59 57 93 68 1996 94 93 94 74 53 52 42 55 53 54 58 67 66 1997 81 75 86 77 52 47 51 58 44 58 78 89 66 1998 93 88 85 61 50 40 51 52 55 50 50 50 60 1999 79 90 74 49 42 34 49 50 60 52 61 58 58 2000 75 63 43 46 38 43 45 47 54 52 73 80 55 2001 83 66 66 41 37 38 44 56 54 48 58 80 56 2002 87 78 68 57 37 38 39 49 52 49 55 84 58 2003 88 80 76 69 44 38 56 55 49 53 51 83 62 2004 87 69 53 52 38 38 46 57 50 48 66 85 57 2005 91 90 85 56 43 35 52 49 48 52 68 66 61 MEAN 84 80 75 60 44 39 48 53 54 53 62 76 61 =============================================================================================== TEHRAN 2006,MAY M.(S & A) STATION LAR (40873) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) FORM 16 LATITUDE 27 41 N LONGITUDE 54 17 E DATA PROCESSING CENTER ELEVATION 792.0 M AVERAGE OF MINIMUM RELATIVE HUMIDITY IN PERCENT YEAR JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL 1989 *** *** *** *** *** *** *** *** *** *** *** *** *** 1990 *** *** 19 22 20 10 *** 21 23 17 19 29 *** 1991 38 41 37 14 17 9 15 13 16 18 30 58 26 1992 59 46 40 31 19 16 15 17 16 21 25 48 29 1993 47 51 28 27 24 23 25 27 21 20 26 25 29 1994 22 18 28 17 19 17 31 26 25 29 43 29 25 1995 32 39 41 40 21 34 27 18 20 25 22 59 32 1996 51 45 54 26 15 15 14 16 17 18 21 27 27 1997 39 27 42 30 17 18 21 21 16 23 40 42 28 1998 50 38 37 24 22 17 22 20 22 21 20 21 26 1999 38 48 25 16 20 14 22 21 25 22 34 25 26 2000 40 26 20 20 19 19 20 20 22 24 33 41 25 2001 35 27 29 16 17 15 18 20 22 20 25 41 24 2002 43 35 26 23 14 16 15 18 18 18 25 45 25 2003 41 38 29 25 22 17 24 23 22 20 22 37 27 2004 44 24 21 22 16 16 20 20 15 17 24 42 23 2005 45 45 37 18 14 13 21 21 19 22 30 27 26 MEAN 42 37 32 23 19 17 21 20 20 21 27 37 26 RH=0 =====> RELATIVE HUMIDITY < 0.5% =============================================================================================== TEHRAN 2006,MAY M.(S & A) STATION LAR (40873) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) FORM 17 LATITUDE 27 41 N LONGITUDE 54 17 E DATA PROCESSING CENTER ELEVATION 792.0 M AVERAGE OF RELATIVE HUMIDITY AT 03 UTC. IN PERCENT YEAR JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL 1989 *** *** *** *** *** *** *** *** *** *** *** *** *** 1990 *** *** 59 50 40 27 *** 45 58 52 54 64 *** 1991 75 84 83 52 38 29 42 47 55 51 69 93 60 1992 92 89 81 71 43 36 38 44 40 45 48 87 60 1993 92 88 77 71 58 47 48 53 61 51 56 64 64 1994 69 54 75 48 44 36 58 61 58 70 78 74 60 1995 73 83 86 75 47 50 56 65 62 59 57 92 67 1996 93 92 94 74 53 52 42 55 53 53 55 67 65 1997 79 74 82 76 52 47 51 57 44 57 78 87 65 1998 92 87 85 59 50 40 51 52 55 50 50 50 60 1999 78 90 74 49 42 34 49 50 60 52 61 58 58 2000 75 63 42 46 38 42 44 47 54 52 71 79 54 2001 83 65 66 41 37 38 44 56 54 48 58 79 56 2002 86 78 67 57 37 38 39 49 51 49 54 84 57 2003 86 80 76 69 44 38 55 55 49 53 51 83 62 2004 87 68 52 51 38 38 46 57 49 48 65 84 57 2005 90 90 85 56 43 35 52 49 47 52 66 64 61 MEAN 83 79 74 59 44 39 48 53 53 53 61 76 60 =============================================================================================== TEHRAN 2006,MAY M.(S & A) STATION LAR (40873) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) FORM 18 LATITUDE 27 41 N LONGITUDE 54 17 E DATA PROCESSING CENTER ELEVATION 792.0 M AVERAGE OF RELATIVE HUMIDITY AT 09 UTC. IN PERCENT YEAR JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL 1989 *** *** *** *** *** *** *** *** *** *** *** *** *** 1990 *** *** 26 24 22 12 *** 27 27 20 24 35 *** 1991 45 50 45 17 22 11 19 19 22 24 37 66 31 1992 68 51 47 35 23 19 19 22 20 24 29 56 34 1993 57 58 35 32 27 28 29 32 28 26 31 33 35 1994 32 24 39 21 23 21 37 33 31 34 49 36 32 1995 39 49 47 43 25 37 32 25 23 28 27 66 37 1996 59 56 62 29 16 18 16 20 21 21 25 32 31 1997 46 31 48 35 20 20 26 25 19 28 44 52 33 1998 58 47 45 28 25 21 26 24 26 23 24 26 31 1999 50 59 32 19 23 16 25 23 29 26 38 31 31 2000 48 32 23 24 22 21 23 24 28 28 40 49 30 2001 42 33 36 19 20 18 21 24 26 24 30 49 29 2002 51 43 31 27 16 19 18 22 23 22 30 53 30 2003 52 46 35 30 24 19 29 28 25 25 26 46 32 2004 54 32 26 25 19 18 24 28 22 23 33 49 29 2005 56 53 43 21 17 15 24 25 23 24 34 34 31 MEAN 50 44 39 27 22 20 25 25 25 25 33 45 32 =============================================================================================== TEHRAN 2006,MAY M.(S & A) STATION LAR (40873) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) FORM 19 LATITUDE 27 41 N LONGITUDE 54 17 E DATA PROCESSING CENTER ELEVATION 792.0 M AVERAGE OF RELATIVE HUMIDITY AT 15 UTC. IN PERCENT YEAR JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL 1989 *** *** *** *** *** *** *** *** *** *** *** *** *** 1990 *** *** 24 27 24 12 *** 25 30 22 25 36 *** 1991 49 51 47 18 21 10 18 18 24 24 36 76 33 1992 73 59 52 40 23 19 21 23 19 22 29 58 37 1993 64 64 37 32 28 25 27 29 28 22 29 32 35 1994 30 22 35 20 23 18 34 33 31 36 54 40 31 1995 41 49 50 49 27 43 38 24 30 32 31 76 41 1996 70 62 68 39 21 20 18 25 23 27 33 39 37 1997 53 36 56 40 22 23 27 29 22 32 50 60 38 1998 66 53 51 31 27 22 28 28 27 26 26 31 35 1999 48 59 34 23 25 17 24 27 31 29 43 37 33 2000 50 36 26 27 24 23 26 26 27 31 48 54 33 2001 49 36 36 18 21 20 22 25 28 28 37 52 31 2002 58 44 32 28 17 19 19 21 23 24 34 62 32 2003 56 50 38 34 26 20 29 28 28 25 29 48 34 2004 56 31 28 27 20 19 25 27 24 23 34 62 31 2005 62 55 49 25 18 17 26 24 25 29 43 39 34 MEAN 55 47 41 30 23 20 25 26 26 27 36 50 34 =============================================================================================== TEHRAN 2006,MAY M.(S & A) STATION LAR (40873) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) FORM 20 LATITUDE 27 41 N LONGITUDE 54 17 E DATA PROCESSING CENTER ELEVATION 792.0 M NO. OF DAYS WITH MAXIMUM TEMPERATURE EQUAL 30 AND ABOVE YEAR JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL 1989 *** *** *** *** *** *** *** 24 30 31 4 0 *** 1990 0 0 6 20 31 30 *** 31 30 31 8 0 *** 1991 0 0 0 22 31 30 31 31 30 29 4 0 208 1992 0 0 0 16 30 30 31 31 30 30 4 0 202 1993 0 0 0 17 30 30 31 31 30 30 6 0 205 1994 0 0 0 21 30 30 31 31 30 27 3 0 203 1995 0 0 0 11 31 30 31 31 30 29 7 0 200 1996 0 0 0 16 31 30 31 31 30 28 6 0 203 1997 0 0 0 6 31 30 31 31 30 23 0 0 182 1998 0 0 4 25 31 30 31 31 30 31 5 1 219 1999 0 0 5 27 31 30 31 31 30 31 9 0 225 2000 0 0 5 29 31 30 31 31 30 30 4 0 221 2001 0 0 4 30 31 30 31 31 30 31 8 0 226 2002 0 0 5 21 31 30 31 31 30 31 0 0 210 2003 0 0 3 23 31 30 31 31 30 31 2 0 212 2004 0 0 14 23 31 30 31 31 30 30 6 0 226 2005 0 0 1 28 31 30 31 31 30 31 6 0 219 MEAN 0.0 0.0 2.9 20.9 30.8 30.0 31.0 30.6 30.0 29.6 4.8 0.1 210.7 =============================================================================================== TEHRAN 2006,MAY M.(S & A) STATION LAR (40873) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) FORM 21 LATITUDE 27 41 N LONGITUDE 54 17 E DATA PROCESSING CENTER ELEVATION 792.0 M NO. OF DAYS WITH MAXIMUM TEMPERATURE EQUAL 00 AND BELOW YEAR JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL 1989 *** *** *** *** *** *** *** 0 0 0 0 0 *** 1990 0 0 0 0 0 0 *** 0 0 0 0 0 *** 1991 0 0 0 0 0 0 0 0 0 0 0 0 0 1992 0 0 0 0 0 0 0 0 0 0 0 0 0 1993 0 0 0 0 0 0 0 0 0 0 0 0 0 1994 0 0 0 0 0 0 0 0 0 0 0 0 0 1995 0 0 0 0 0 0 0 0 0 0 0 0 0 1996 0 0 0 0 0 0 0 0 0 0 0 0 0 1997 0 0 0 0 0 0 0 0 0 0 0 0 0 1998 0 0 0 0 0 0 0 0 0 0 0 0 0 1999 0 0 0 0 0 0 0 0 0 0 0 0 0 2000 0 0 0 0 0 0 0 0 0 0 0 0 0 2001 0 0 0 0 0 0 0 0 0 0 0 0 0 2002 0 0 0 0 0 0 0 0 0 0 0 0 0 2003 0 0 0 0 0 0 0 0 0 0 0 0 0 2004 0 0 0 0 0 0 0 0 0 0 0 0 0 2005 0 0 0 0 0 0 0 0 0 0 0 0 0 MEAN 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 =============================================================================================== TEHRAN 2006,MAY M.(S & A) STATION LAR (40873) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) FORM 22 LATITUDE 27 41 N LONGITUDE 54 17 E DATA PROCESSING CENTER ELEVATION 792.0 M NO. OF DAYS WITH MINIMUM TEMPERATURE EQUAL 21 AND ABOVE YEAR JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL 1989 *** *** *** *** *** *** *** 25 18 0 0 0 *** 1990 0 0 0 1 13 21 *** 31 20 0 0 0 *** 1991 0 0 0 0 8 16 27 31 21 0 0 0 103 1992 0 0 0 0 7 22 30 29 6 0 0 0 94 1993 0 0 0 0 9 27 31 30 18 0 0 0 115 1994 0 0 0 1 16 30 31 31 14 2 0 0 125 1995 0 0 0 0 4 23 30 31 12 0 0 0 100 1996 0 0 0 0 4 25 31 29 19 1 0 0 109 1997 0 0 0 0 6 25 31 30 12 2 0 0 106 1998 0 0 0 1 14 29 30 31 22 1 0 0 128 1999 0 0 0 0 8 30 31 31 21 0 0 0 121 2000 0 0 0 1 10 26 31 30 17 0 0 0 115 2001 0 0 0 1 13 30 31 31 22 0 0 0 128 2002 0 0 0 1 14 28 31 30 19 1 0 0 124 2003 0 0 0 0 14 30 31 31 21 0 0 0 127 2004 0 0 1 0 10 28 31 31 18 0 0 0 119 2005 0 0 0 0 5 25 31 31 15 0 0 0 107 MEAN 0.0 0.0 0.1 0.4 9.7 25.9 30.5 30.2 17.4 0.4 0.0 0.0 114.6 =============================================================================================== TEHRAN 2006,MAY M.(S & A) STATION LAR (40873) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) FORM 23 LATITUDE 27 41 N LONGITUDE 54 17 E DATA PROCESSING CENTER ELEVATION 792.0 M NO. OF DAYS WITH MINIMUM TEMPERATURE EQUAL -4 AND BELOW YEAR JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL 1989 *** *** *** *** *** *** *** 0 0 0 0 0 *** 1990 0 0 0 0 0 0 *** 0 0 0 0 0 *** 1991 1 0 0 0 0 0 0 0 0 0 0 0 1 1992 0 0 0 0 0 0 0 0 0 0 0 0 0 1993 0 0 0 0 0 0 0 0 0 0 0 0 0 1994 0 0 0 0 0 0 0 0 0 0 0 0 0 1995 0 0 0 0 0 0 0 0 0 0 0 0 0 1996 0 0 0 0 0 0 0 0 0 0 0 0 0 1997 0 0 0 0 0 0 0 0 0 0 0 0 0 1998 0 0 0 0 0 0 0 0 0 0 0 0 0 1999 0 0 0 0 0 0 0 0 0 0 0 0 0 2000 0 0 0 0 0 0 0 0 0 0 0 0 0 2001 1 0 0 0 0 0 0 0 0 0 0 0 1 2002 0 0 0 0 0 0 0 0 0 0 0 0 0 2003 0 0 0 0 0 0 0 0 0 0 0 0 0 2004 0 0 0 0 0 0 0 0 0 0 0 0 0 2005 0 0 0 0 0 0 0 0 0 0 0 0 0 MEAN 0.1 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.1 =============================================================================================== TEHRAN 2006,MAY M.(S & A) STATION LAR (40873) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) FORM 24 LATITUDE 27 41 N LONGITUDE 54 17 E DATA PROCESSING CENTER ELEVATION 792.0 M NO. OF DAYS WITH MINIMUM TEMPERATURE EQUAL 00 AND BELOW YEAR JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL 1989 *** *** *** *** *** *** *** 0 0 0 0 0 *** 1990 0 0 0 0 0 0 *** 0 0 0 0 3 *** 1991 4 4 0 0 0 0 0 0 0 0 0 0 8 1992 8 4 0 0 0 0 0 0 0 0 0 1 13 1993 0 0 0 0 0 0 0 0 0 0 0 0 0 1994 3 1 0 0 0 0 0 0 0 0 0 7 11 1995 0 0 0 0 0 0 0 0 0 0 0 0 0 1996 1 0 0 0 0 0 0 0 0 0 0 1 2 1997 0 0 0 0 0 0 0 0 0 0 0 0 0 1998 2 0 0 0 0 0 0 0 0 0 0 0 2 1999 3 0 0 0 0 0 0 0 0 0 0 8 11 2000 0 0 0 0 0 0 0 0 0 0 0 0 0 2001 3 2 0 0 0 0 0 0 0 0 0 0 5 2002 0 0 0 0 0 0 0 0 0 0 0 1 1 2003 0 0 0 0 0 0 0 0 0 0 0 0 0 2004 0 0 0 0 0 0 0 0 0 0 0 0 0 2005 1 1 0 0 0 0 0 0 0 0 0 0 2 MEAN 1.6 0.8 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 1.2 3.6 =============================================================================================== TEHRAN 2006,MAY M.(S & A) STATION LAR (40873) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) FORM 25 LATITUDE 27 41 N LONGITUDE 54 17 E DATA PROCESSING CENTER ELEVATION 792.0 M MONTHLY TOTAL OF PRECIPITATION IN MM. YEAR JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL 1989 ***** ***** ***** ***** ***** ***** ***** 0.8 1.0 0.0 7.0 79.0 ****** 1990 29.8 36.0 4.6 3.4 0.0 0.0 ***** 0.2 4.0 0.0 0.0 0.0 ****** 1991 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 1992 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 1993 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 1994 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 1995 5.0 62.6 53.8 18.6 0.0 0.0 108.0 21.8 8.4 0.0 0.0 162.3 440.5 1996 93.7 65.8 133.3 0.0 0.0 31.0 9.0 15.2 5.0 0.0 1.0 0.0 354.0 1997 62.1 3.0 130.0 26.7 0.0 9.0 0.8 12.0 0.0 3.4 4.5 14.4 265.9 1998 94.8 48.0 33.6 0.4 0.0 0.0 20.0 1.3 0.0 0.0 0.0 0.0 198.1 1999 39.2 46.3 34.0 0.0 0.0 0.0 0.0 3.8 0.3 0.0 0.0 0.0 123.6 2000 20.8 0.0 0.0 0.0 0.0 0.0 4.0 0.6 0.0 0.0 12.6 64.1 102.1 2001 11.0 0.3 8.0 0.0 0.0 0.0 0.0 16.4 0.2 0.0 5.3 14.1 55.3 2002 67.7 8.8 12.2 8.2 0.0 0.0 0.0 5.0 6.0 0.0 0.0 33.3 141.2 2003 22.6 55.9 63.3 19.6 0.0 0.0 8.2 3.2 0.0 0.0 0.0 19.3 192.1 2004 50.6 0.5 8.4 3.0 0.0 0.0 2.0 8.0 0.0 0.0 5.9 130.4 208.8 2005 60.0 31.6 38.7 0.0 0.0 0.0 5.4 0.0 0.0 0.0 3.6 1.0 140.3 MEAN 48.7 45.2 42.4 7.2 0.5 2.5 11.8 6.5 4.1 3.8 3.2 49.8 225.7 =============================================================================================== TEHRAN 2006,MAY M.(S & A) STATION LAR (40873) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) FORM 26 LATITUDE 27 41 N LONGITUDE 54 17 E DATA PROCESSING CENTER ELEVATION 792.0 M GREATEST DAILY OF PRECIPITATION IN MM. YEAR JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL 1989 ***** ***** ***** ***** ***** ***** ***** 0.6 1.0 0.0 4.0 29.0 ****** DAY ** ** ** ** ** ** ** 8 4 ** 9 5 1990 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 ** ** ** 1991 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 1992 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 1993 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 1994 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 ** 13 9 6 10 17 5 1995 4.0 38.0 20.0 18.0 0.0 0.0 40.0 21.0 5.0 0.0 0.0 75.0 75.0 DAY 26 9 14 24 ** ** 24 23 16 ** ** 12 1996 44.0 29.0 63.4 0.0 0.0 19.0 4.0 10.0 5.0 0.0 1.0 0.0 63.4 DAY 12 21 13 ** ** 13 6 25 6 ** 28 ** 1997 28.0 3.0 44.0 17.7 0.0 5.0 0.4 12.0 0.0 3.0 4.0 7.0 44.0 DAY 26 12 11 24 ** 23 14 8 ** 19 28 21 1998 26.0 28.0 20.0 0.4 0.0 0.0 17.0 1.0 0.0 0.0 0.0 0.0 28.0 DAY 2 13 19 23 ** ** 19 28 ** ** ** ** 1999 24.0 15.0 23.0 0.0 0.0 0.0 0.0 3.0 0.3 0.0 0.0 0.0 24.0 DAY 18 21 2 ** ** ** ** 16 28 ** ** ** 2000 14.0 0.0 0.0 0.0 0.0 0.0 4.0 0.6 0.0 0.0 5.0 36.0 36.0 DAY 17 ** ** ** ** ** 14 19 ** ** 10 11 2001 6.0 0.3 4.0 0.0 0.0 0.0 0.0 6.0 0.2 0.0 5.0 9.0 9.0 DAY 10 22 16 ** ** ** ** 11 19 ** 14 16 2002 30.4 5.0 6.0 8.0 0.0 0.0 0.0 5.0 3.0 0.0 0.0 12.4 30.4 DAY 12 20 22 12 ** ** ** 29 29 ** ** 13 2003 8.7 16.0 30.0 11.0 0.0 0.0 4.0 3.0 0.0 0.0 0.0 12.0 30.0 DAY 17 24 27 17 ** ** 11 3 ** ** ** 7 2004 23.0 0.5 8.0 3.0 0.0 0.0 2.0 7.0 0.0 0.0 4.0 64.0 64.0 DAY 10 4 20 5 ** ** 12 23 ** ** 24 26 2005 23.0 12.0 14.0 0.0 0.0 0.0 3.0 0.0 0.0 0.0 3.0 1.0 23.0 DAY 19 14 17 ** ** ** 24 ** ** ** 17 31 1989-2005 44.0 102.0 63.4 18.0 5.0 19.0 40.0 21.0 27.0 52.0 13.0 75.0 102.0 YEAR-DAY 96-12 93- 4 96-13 95-24 92-12 96-13 95-24 95-23 93- 4 91- 1 91-24 95-12 93 =============================================================================================== TEHRAN 2006,MAY M.(S & A) STATION LAR (40873) I.R OF IR