STATION NAEIN (40801) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 32 51 N LONGITUDE 53 5 E DATA PROCESSING CENTER ELEVATION 1549.0 M MEANS AND EXTREMES FOR THE YEAR 1992 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AIR TEMPERATURE (C) ***** ***** 7.7 16.5 20.1 28.9 32.3 28.4 24.7 18.6 13.9 6.3 ***** MINIMUN AIR TEMPERATURE (C) ***** ***** 0.7 8.1 12.1 18.3 20.7 18.4 13.7 8.3 5.3 0.1 ***** DAYS WITH MINIMUM TEMP. >=21 **** **** 0 0 0 6 14 3 0 0 0 0 **** DAYS WITH MINIMUM TEMP. <=-4 **** **** 3 0 0 0 0 0 0 0 2 2 **** DAYS WITH FREEZING MIN.<= 0 **** **** 15 0 0 0 0 0 0 0 3 19 **** TEMPERATURE RECORDS LOWEST(C) ***** ***** -8.0 2.0 6.0 14.4 17.0 13.5 9.4 5.4 -6.2 -7.0 ***** DAY ** ** 13 2 3 9 27 31 12 29 27 29 MAXIMUM AIR TEMPERATURE (C) ***** ***** 12.4 21.3 24.2 33.0 36.1 32.7 29.1 23.6 18.7 10.1 ***** DAYS WITH MAXIMUM TEMP. >=30 **** **** 0 0 5 27 31 27 14 0 0 0 **** DAYS WITH MAXIMUM TEMP. <= 0 **** **** 0 0 0 0 0 0 0 0 0 0 **** TEMPERATURE RECORDS HIGHEST(C)***** ***** 18.5 27.4 31.0 38.0 40.0 37.4 33.2 27.2 22.6 17.0 ***** DAY ** ** 29 15 18 30 5 6 25 4 1 16 DIF. BETWEEN (MAX.-MIN.) (C) ***** ***** 11.7 13.2 12.1 14.7 15.4 14.3 15.4 15.3 13.4 10.0 ***** MEAN DAILY TEMP. (MDT) (C) ***** ***** 6.5 14.7 18.2 25.7 28.4 25.5 21.4 15.9 12.0 5.1 ***** COOLING DEG. DAYS(BASE 21 0C)****** ****** 0.0 0.4 11.4 135.5 230.0 142.4 35.9 0.0 0.0 0.0 ****** HEATING DEG. DAYS(BASE 18 0C)****** ****** 355.9 96.8 46.6 0.0 0.0 0.0 0.8 66.8 181.0 399.4 ****** DEWPOINT (MEAN C) ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** -1.9 -0.9 ***** MIXING RATIO (G/KG) ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 4.19 4.40 ****** VAPOUR PRESSURE (HPA) ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 5.66 5.92 ****** SATURATION DEF. (HPA) ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 10.99 4.04 ****** RELATIVE HUMIDITY (MEAN %) *** *** *** *** *** *** *** *** *** *** 36 63 *** RELATIVE HUMIDITY (MAX. %) *** *** *** *** *** *** *** *** *** *** 50 75 *** RELATIVE HUMIDITY (MIN. %) *** *** *** *** *** *** *** *** *** *** 28 51 *** RELATIVE HUMIDITY (MEAN% 03UTC) *** *** *** *** *** *** *** *** *** *** 50 72 *** RELATIVE HUMIDITY (MEAN% 09UTC) *** *** *** *** *** *** *** *** *** *** 30 57 *** RELATIVE HUMIDITY (MEAN% 15UTC) *** *** *** *** *** *** *** *** *** *** 37 67 *** RH=0 => RELATIVE HUMIDITY < 0.5% AMOUNT OF PRECIPITATION MM. ****** ****** 17.0 19.9 20.3 0.7 0.0 0.0 0.0 0.0 0.0 25.0 ****** DAYS WITH PRECIPITATION >=10 **** **** 1 1 0 0 0 0 0 0 0 1 **** DAYS WITH PRECIPITATION >= 5 **** **** 1 2 1 0 0 0 0 0 0 1 **** DAYS WITH PRECIPITATION >= 1 **** **** 2 3 6 0 0 0 0 0 0 6 **** DAYS WITH PRECIPITATION **** **** 2 5 7 1 0 0 0 0 0 8 **** GREATEST DAILY PRECIPITATION ****** ****** 14.0 11.0 8.0 0.7 0.0 0.0 0.0 0.0 0.0 11.0 ****** DAY ** ** 21 7 7 8 ** ** ** ** ** 4 DAY WITH THUNDER STORM **** **** 0 3 3 1 0 0 0 0 0 0 **** DAYS WITH SNOW OR SLEET **** **** 0 0 0 0 0 0 0 0 0 2 **** DAYS WITH DUST **** **** 0 7 6 4 1 2 2 2 7 5 **** WIND DIRECTION (PREVAILING) *** *** 90 270 90 270 90 90 270 45 90 180 *** PREVAILING WIND SPEED(KNOTS) **** **** 8.0 8.9 4.8 7.3 6.6 6.4 7.6 6.6 6.3 10.5 **** PREVAILING WIND PERCENT ***** ***** 11.0 23.3 20.0 24.0 36.1 35.1 20.7 20.8 13.3 18.7 ***** CALMS PERCENT OF WIND ***** ***** 61.3 12.7 27.1 16.7 14.2 12.3 20.7 31.8 32.0 34.8 ***** NO. OF WIND OBSERVATION **** **** 155 150 155 150 155 154 150 154 150 155 1528 VECTOR WIND DIRECTION (MEAN) *** *** 218 227 258 309 48 42 339 3 206 183 *** VECTOR WIND MAGNITUDE(KNOTS) **** **** 1.1 3.4 1.3 0.9 2.7 3.5 1.6 1.6 2.4 1.9 **** WIND STEADINESES (MEAN %) ***** ***** 27.5 41.5 22.4 17.3 42.9 57.4 26.7 34.0 38.7 36.5 ***** WIND SPEED (MEAN KNOTS) **** **** 4.0 8.2 5.8 5.2 6.3 6.1 6.0 4.7 6.2 5.2 **** FASTEST WIND DIRECTION *** *** 270 270 280 220 290 10 210 360 180 210 *** FASTEST WIND SPEED (KNOTS) *** *** 27 29 39 19 19 21 23 16 29 23 *** DAY ** ** 7 22 4 8 12 11 25 15 25 27 DAYS WITH SKY CLEAR (0-2)/8 **** **** 18 8 6 25 23 28 28 30 16 12 **** DAYS WITH P.CLOUDY (3-6)/8 **** **** 12 18 20 2 8 3 2 1 13 13 **** DAYS WITH CLOUDY (7-8)/8 **** **** 1 4 5 3 0 0 0 0 1 6 **** DAYS WITH VISIBILITY =< 2 KM **** **** 0 0 1 0 0 0 0 0 2 1 **** DURATION OF SUNSHINE HOURS ****** ****** ****** ****** ****** ****** ****** 352.1 321.6 298.6 215.8 175.7 ****** ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION NAEIN (40801) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 32 51 N LONGITUDE 53 5 E DATA PROCESSING CENTER ELEVATION 1549.0 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 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 845.8 843.2 ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 853.7 849.0 ****** DAY-HOUR **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** 4- 6 1- 6 MIN. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 835.7 837.8 ****** DAY-HOUR **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** 26- 3 19-12 MEAN QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1019.2 1016.1 ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1028.3 1022.9 ****** DAY-HOUR **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** 4- 6 1- 6 MIN. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1007.4 1009.8 ****** DAY-HOUR **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** 26- 3 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 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 846.1 843.2 ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 852.2 847.8 ****** DAY ** ** ** ** ** ** ** ** ** ** 4 1 MIN. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 835.7 839.1 ****** DAY ** ** ** ** ** ** ** ** ** ** 26 28 MEAN QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1019.5 1016.2 ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1026.6 1021.5 ****** DAY ** ** ** ** ** ** ** ** ** ** 4 1 MIN. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1007.4 1011.4 ****** DAY ** ** ** ** ** ** ** ** ** ** 26 28 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1015.9 1016.4 ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1023.6 1026.7 ****** DAY ** ** ** ** ** ** ** ** ** ** 18 29 MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1002.0 1010.3 ****** DAY ** ** ** ** ** ** ** ** ** ** 26 4 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION NAEIN (40801) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 32 51 N LONGITUDE 53 5 E DATA PROCESSING CENTER ELEVATION 1549.0 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 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 847.0 844.3 ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 853.7 849.0 ****** DAY ** ** ** ** ** ** ** ** ** ** 4 1 MIN. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 837.6 840.6 ****** DAY ** ** ** ** ** ** ** ** ** ** 26 28 MEAN QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1020.6 1017.4 ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1028.3 1022.9 ****** DAY ** ** ** ** ** ** ** ** ** ** 4 1 MIN. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1009.6 1013.1 ****** DAY ** ** ** ** ** ** ** ** ** ** 26 28 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 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 845.7 843.1 ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 852.5 847.7 ****** DAY ** ** ** ** ** ** ** ** ** ** 4 1 MIN. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 836.7 839.4 ****** DAY ** ** ** ** ** ** ** ** ** ** 26 22 MEAN QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1019.0 1016.0 ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1026.9 1021.4 ****** DAY ** ** ** ** ** ** ** ** ** ** 4 1 MIN. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1008.6 1011.7 ****** DAY ** ** ** ** ** ** ** ** ** ** 26 22 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** PRESSURE AT HOUR 1200 UTC. MEAN QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 844.7 842.2 ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 851.0 846.4 ****** DAY ** ** ** ** ** ** ** ** ** ** 4 11 MIN. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 836.9 837.8 ****** DAY ** ** ** ** ** ** ** ** ** ** 26 19 MEAN QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1017.9 1015.0 ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1025.2 1019.9 ****** DAY ** ** ** ** ** ** ** ** ** ** 4 11 MIN. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1008.8 1009.8 ****** DAY ** ** ** ** ** ** ** ** ** ** 26 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 NAEIN (40801) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 32 51 N LONGITUDE 53 5 E DATA PROCESSING CENTER ELEVATION 1549.0 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 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 845.6 843.1 ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 851.6 847.5 ****** DAY ** ** ** ** ** ** ** ** ** ** 4 1 MIN. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 838.8 838.5 ****** DAY ** ** ** ** ** ** ** ** ** ** 25 19 MEAN QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1018.9 1016.0 ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1025.9 1021.1 ****** DAY ** ** ** ** ** ** ** ** ** ** 4 1 MIN. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1011.0 1010.7 ****** DAY ** ** ** ** ** ** ** ** ** ** 25 19 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1015.3 1016.2 ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1022.6 1023.3 ****** DAY ** ** ** ** ** ** ** ** ** ** 4 29 MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1004.8 1010.7 ****** DAY ** ** ** ** ** ** ** ** ** ** 25 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 NAEIN (40801) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 32 51 N LONGITUDE 53 5 E DATA PROCESSING CENTER ELEVATION 1549.0 M MEANS AND EXTREMES FOR THE YEAR 1993 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AIR TEMPERATURE (C) 2.5 6.8 10.0 18.0 20.5 26.5 28.0 27.0 23.8 16.7 11.1 8.0 16.6 MINIMUN AIR TEMPERATURE (C) -2.8 0.2 2.8 9.5 13.4 17.6 20.0 18.6 15.5 7.8 3.7 -0.4 8.8 DAYS WITH MINIMUM TEMP. >=21 0 0 0 0 0 1 9 2 0 0 0 0 12 DAYS WITH MINIMUM TEMP. <=-4 12 3 0 0 0 0 0 0 0 0 2 2 19 DAYS WITH FREEZING MIN.<= 0 28 13 8 0 0 0 0 0 0 0 7 18 74 TEMPERATURE RECORDS LOWEST(C) -9.0 -7.5 -3.6 4.2 8.0 14.0 16.4 14.4 12.0 1.5 -6.0 -5.2 -9.0 DAY 21 18 14 4 1 6 19 4 29 9 30 1 MAXIMUM AIR TEMPERATURE (C) 6.4 11.5 14.3 22.8 27.3 34.0 34.7 34.2 31.6 22.0 15.6 13.2 22.3 DAYS WITH MAXIMUM TEMP. >=30 0 0 0 0 10 27 31 29 24 2 0 0 123 DAYS WITH MAXIMUM TEMP. <= 0 2 0 0 0 0 0 0 0 0 0 0 0 2 TEMPERATURE RECORDS HIGHEST(C) 16.0 19.5 20.6 29.0 33.6 38.6 38.6 38.4 35.2 31.8 24.2 18.8 38.6 DAY 28 28 31 21 27 18 4 22 3 1 1 18 DIF. BETWEEN (MAX.-MIN.) (C) 9.2 11.3 11.5 13.3 13.9 16.4 14.7 15.6 16.1 14.2 11.9 13.6 13.5 MEAN DAILY TEMP. (MDT) (C) 1.8 5.8 8.5 16.2 20.3 25.8 27.3 26.4 23.6 14.9 9.7 6.4 15.6 COOLING DEG. DAYS(BASE 21 0C) 0.0 0.0 0.0 1.5 32.3 144.1 196.7 167.3 79.1 1.3 0.0 0.0 622.4 HEATING DEG. DAYS(BASE 18 0C) 501.1 341.0 292.9 71.6 14.0 0.0 0.0 0.0 0.0 104.6 250.9 358.9 1935.1 DEWPOINT (MEAN C) -4.1 -2.8 -5.9 -0.3 4.0 0.1 2.9 1.2 -2.1 -3.0 -4.0 -6.2 -1.7 MIXING RATIO (G/KG) 3.48 3.96 3.17 4.73 6.20 4.82 5.74 5.09 4.08 3.82 3.67 2.95 4.31 VAPOUR PRESSURE (HPA) 4.69 5.32 4.26 6.34 8.31 6.45 7.66 6.82 5.48 5.16 4.95 3.99 5.79 SATURATION DEF. (HPA) 3.07 5.04 8.65 15.18 17.06 29.90 31.61 30.60 25.81 14.95 9.17 7.26 16.53 RELATIVE HUMIDITY (MEAN %) 66 54 36 33 37 20 21 20 20 28 38 39 34 RELATIVE HUMIDITY (MAX. %) 76 69 51 51 57 31 31 30 31 38 54 55 48 RELATIVE HUMIDITY (MIN. %) 56 43 25 23 22 12 14 13 12 21 27 27 25 RELATIVE HUMIDITY (MEAN% 03UTC) 74 66 49 50 48 28 29 28 26 37 51 52 45 RELATIVE HUMIDITY (MEAN% 09UTC) 61 47 29 27 26 15 16 14 13 23 32 30 28 RELATIVE HUMIDITY (MEAN% 15UTC) 67 52 33 28 28 14 15 14 15 27 40 43 31 RH=0 => RELATIVE HUMIDITY < 0.5% AMOUNT OF PRECIPITATION MM. 52.0 30.4 7.9 6.6 8.4 0.0 0.1 0.0 0.0 0.0 5.0 0.7 111.1 DAYS WITH PRECIPITATION >=10 3 2 0 0 0 0 0 0 0 0 0 0 5 DAYS WITH PRECIPITATION >= 5 5 3 0 0 0 0 0 0 0 0 0 0 8 DAYS WITH PRECIPITATION >= 1 8 5 2 3 2 0 0 0 0 0 2 0 22 DAYS WITH PRECIPITATION 13 7 4 6 6 0 1 0 0 0 2 1 40 GREATEST DAILY PRECIPITATION 12.0 11.0 4.0 2.0 3.0 0.0 0.1 0.0 0.0 0.0 3.0 0.7 12.0 DAY 7 3 18 23 5 ** 28 ** ** ** 26 16 DAY WITH THUNDER STORM 0 0 0 1 3 0 0 0 0 0 0 0 4 DAYS WITH SNOW OR SLEET 8 2 0 0 0 0 0 0 0 0 0 0 10 DAYS WITH DUST 0 1 9 4 11 10 7 2 1 2 5 0 52 WIND DIRECTION (PREVAILING) 270 270 270 270 270 270 270 270 270 270 270 45 270 PREVAILING WIND SPEED(KNOTS) 9.4 8.4 9.0 9.6 8.9 8.9 7.8 6.7 7.2 6.8 7.8 6.1 8.1 PREVAILING WIND PERCENT 16.8 17.9 20.6 22.0 29.1 25.8 23.4 24.2 30.0 21.5 12.0 18.1 22.7 CALMS PERCENT OF WIND 42.6 31.4 18.1 28.0 23.1 27.1 27.4 26.6 27.9 41.2 44.0 43.9 30.8 NO. OF WIND OBSERVATION 155 140 155 150 247 240 248 248 240 177 150 155 2305 VECTOR WIND DIRECTION (MEAN) 231 217 218 231 259 312 354 3 332 339 206 18 264 VECTOR WIND MAGNITUDE(KNOTS) 1.8 2.0 3.0 3.7 2.7 2.0 3.0 2.2 1.1 0.7 2.7 0.8 1.1 WIND STEADINESES (MEAN %) 34.0 33.9 36.1 52.9 38.0 33.9 50.8 41.5 21.2 16.7 46.6 20.5 19.0 WIND SPEED (MEAN KNOTS) 5.3 5.9 8.3 7.0 7.1 5.9 5.9 5.3 5.2 4.2 5.8 3.9 5.8 FASTEST WIND DIRECTION 180 210 200 180 240 240 60 280 270 210 180 180 200 FASTEST WIND SPEED (KNOTS) 25 23 29 29 23 23 19 21 17 17 29 23 29 DAY 8 12 8 27 2 1 4 23 14 1 12 24 DAYS WITH SKY CLEAR (0-2)/8 14 12 10 8 6 25 26 27 29 20 16 17 210 DAYS WITH P.CLOUDY (3-6)/8 9 10 13 16 23 5 5 4 1 11 11 12 120 DAYS WITH CLOUDY (7-8)/8 8 6 8 6 2 0 0 0 0 0 3 2 35 DAYS WITH VISIBILITY =< 2 KM 5 1 0 0 1 2 0 0 0 0 0 0 9 DURATION OF SUNSHINE HOURS 185.0 184.2 100.0 ****** ****** ****** ****** ****** ****** 281.3 217.3 235.7 ****** ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION NAEIN (40801) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 32 51 N LONGITUDE 53 5 E DATA PROCESSING CENTER ELEVATION 1549.0 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 843.2 842.3 841.7 841.3 841.9 839.4 838.9 840.8 842.4 847.6 844.8 846.0 842.5 MAX. QFE PRESSURE IN HPA 851.8 849.0 849.7 848.5 847.1 847.5 844.6 845.6 848.5 853.5 851.1 853.0 853.5 DAY-HOUR 6- 6 9- 6 31- 6 1- 6 9- 6 23- 6 27- 6 31- 6 23- 6 17- 6 21- 6 26- 6 MIN. QFE PRESSURE IN HPA 832.3 834.4 834.0 834.6 836.2 834.1 833.1 833.5 837.5 841.2 835.9 838.3 832.3 DAY-HOUR 8-12 3-12 12-12 13-12 7-12 3-15 12-15 12-15 3-15 3-12 14- 3 4-12 MEAN QNH PRESSURE IN HPA 1016.1 1015.1 1014.4 1013.9 1014.7 1011.7 1011.1 1013.4 1015.2 1021.2 1018.0 1019.4 1015.4 MAX. QNH PRESSURE IN HPA 1026.1 1022.9 1023.7 1022.3 1020.7 1021.1 1017.8 1018.9 1022.3 1028.1 1025.3 1027.5 1028.1 DAY-HOUR 6- 6 9- 6 31- 6 1- 6 9- 6 23- 6 27- 6 31- 6 23- 6 17- 6 21- 6 26- 6 MIN. QNH PRESSURE IN HPA 1003.4 1005.9 1005.4 1006.1 1008.0 1005.5 1004.4 1004.8 1009.5 1013.8 1007.6 1010.4 1003.4 DAY-HOUR 8-12 3-12 12-12 13-12 7-12 3-15 12-15 12-15 3-15 3-12 14- 3 4-12 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** 1004.3 997.9 996.4 999.3 1003.1 ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** 1013.8 1010.0 1003.8 1006.9 1011.1 ****** ****** ****** ****** DAY-HOUR **-** **-** **-** **-** 9- 3 23- 3 28- 3 25- 3 23- 6 **-** **-** **-** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** 998.2 991.8 988.9 989.7 995.5 ****** ****** ****** ****** DAY-HOUR **-** **-** **-** **-** 31-12 18-15 13-15 12-15 3-12 **-** **-** **-** PRESSURE AT HOUR 0000 UTC. MEAN QFE PRESSURE IN HPA ****** ****** ****** ****** 841.8 839.3 838.7 840.5 842.2 ****** ****** ****** ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** ****** 845.2 846.5 843.0 844.5 846.5 ****** ****** ****** ****** DAY ** ** ** ** 9 23 28 31 24 ** ** ** MIN. QFE PRESSURE IN HPA ****** ****** ****** ****** 838.7 835.4 833.7 835.1 838.9 ****** ****** ****** ****** DAY ** ** ** ** 7 4 13 13 14 ** ** ** MEAN QNH PRESSURE IN HPA ****** ****** ****** ****** 1014.5 1011.6 1010.9 1013.0 1014.9 ****** ****** ****** ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** ****** 1018.5 1020.0 1015.9 1017.6 1020.0 ****** ****** ****** ****** DAY ** ** ** ** 9 23 28 31 24 ** ** ** MIN. QNH PRESSURE IN HPA ****** ****** ****** ****** 1010.9 1007.1 1005.1 1006.7 1011.1 ****** ****** ****** ****** DAY ** ** ** ** 7 4 13 13 14 ** ** ** MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** 1004.2 998.3 996.4 999.1 1002.7 ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** 1011.6 1009.3 1002.3 1004.7 1009.4 ****** ****** ****** ****** DAY ** ** ** ** 10 23 28 25 24 ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** 999.5 993.5 989.4 990.8 997.4 ****** ****** ****** ****** DAY ** ** ** ** 21 19 13 23 4 ** ** ** PRESSURE AT HOUR 0300 UTC. MEAN QFE PRESSURE IN HPA 843.2 842.5 841.9 842.1 842.6 840.1 839.4 841.4 842.8 848.2 845.0 846.2 843.0 MAX. QFE PRESSURE IN HPA 850.1 847.4 848.7 847.7 846.6 847.3 843.7 844.9 847.1 852.7 850.2 852.2 852.7 DAY 6 9 31 1 9 23 27 25 23 17 21 27 MIN. QFE PRESSURE IN HPA 832.7 835.1 834.4 836.8 838.7 836.9 834.5 836.1 839.5 843.0 835.9 840.2 832.7 DAY 9 3 22 13 7 4 13 12 14 3 14 5 MEAN QNH PRESSURE IN HPA 1016.1 1015.3 1014.6 1014.8 1015.4 1012.6 1011.8 1014.0 1015.7 1022.0 1018.3 1019.7 1015.8 MAX. QNH PRESSURE IN HPA 1024.2 1021.0 1022.5 1021.4 1020.1 1020.9 1016.7 1018.1 1020.7 1027.2 1024.3 1026.6 1027.2 DAY 6 9 31 1 9 23 27 25 23 17 21 27 MIN. QNH PRESSURE IN HPA 1003.9 1006.7 1005.9 1008.7 1010.9 1008.8 1006.0 1007.9 1011.8 1015.9 1007.6 1012.6 1003.9 DAY 9 3 22 13 7 4 13 12 14 3 14 5 MEAN QFF PRESSURE IN HPA 1019.2 1015.5 1012.8 1007.8 1005.7 999.2 997.5 1000.7 1004.4 1016.4 1016.2 1020.3 1009.6 MAX. QFF PRESSURE IN HPA 1027.6 1023.8 1021.6 1016.5 1013.8 1010.0 1003.8 1006.9 1010.6 1023.8 1026.8 1026.7 1027.6 DAY 6 9 17 1 9 23 28 25 23 8 30 7 MIN. QFF PRESSURE IN HPA 1003.2 1002.6 1002.9 1001.3 999.7 994.8 990.3 992.9 998.7 1007.2 1001.6 1014.9 990.3 DAY 9 3 21 22 29 19 13 12 14 3 14 28 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION NAEIN (40801) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 32 51 N LONGITUDE 53 5 E DATA PROCESSING CENTER ELEVATION 1549.0 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 844.1 843.5 843.0 842.8 843.1 840.7 840.1 842.1 843.8 849.2 845.9 847.3 843.8 MAX. QFE PRESSURE IN HPA 851.8 849.0 849.7 848.5 847.1 847.5 844.6 845.6 848.5 853.5 851.1 853.0 853.5 DAY 6 9 31 1 9 23 27 31 23 17 21 26 MIN. QFE PRESSURE IN HPA 834.0 837.2 835.1 837.7 839.3 837.1 835.3 836.7 840.3 843.8 837.8 840.7 834.0 DAY 8 3 22 13 7 3 13 12 14 3 14 5 MEAN QNH PRESSURE IN HPA 1017.2 1016.5 1015.9 1015.6 1016.0 1013.2 1012.5 1014.9 1016.9 1023.2 1019.2 1020.9 1016.8 MAX. QNH PRESSURE IN HPA 1026.1 1022.9 1023.7 1022.3 1020.7 1021.1 1017.8 1018.9 1022.3 1028.1 1025.3 1027.5 1028.1 DAY 6 9 31 1 9 23 27 31 23 17 21 26 MIN. QNH PRESSURE IN HPA 1005.4 1009.1 1006.7 1009.7 1011.6 1009.0 1006.9 1008.6 1012.8 1016.8 1009.8 1013.2 1005.4 DAY 8 3 22 13 7 3 13 12 14 3 14 5 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** 1005.3 998.8 997.0 1000.2 1004.1 ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** 1013.6 1008.8 1002.6 1006.3 1011.1 ****** ****** ****** ****** DAY ** ** ** ** 9 23 27 25 23 ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** 999.0 994.9 990.4 992.9 998.5 ****** ****** ****** ****** DAY ** ** ** ** 29 18 13 12 14 ** ** ** PRESSURE AT HOUR 0900 UTC. MEAN QFE PRESSURE IN HPA 843.3 842.5 842.0 841.6 842.1 839.8 839.3 841.3 842.9 848.0 844.6 845.8 842.8 MAX. QFE PRESSURE IN HPA 851.3 848.0 848.6 846.7 846.0 846.5 844.3 844.6 847.5 852.6 850.0 851.5 852.6 DAY 6 9 31 1 9 23 27 31 23 17 21 26 MIN. QFE PRESSURE IN HPA 832.7 836.4 834.5 836.1 837.7 836.2 833.9 835.9 839.5 842.3 837.8 838.8 832.7 DAY 8 23 22 13 7 3 13 12 14 3 14 5 MEAN QNH PRESSURE IN HPA 1016.2 1015.3 1014.8 1014.3 1014.8 1012.2 1011.6 1014.0 1015.7 1021.7 1017.8 1019.1 1015.6 MAX. QNH PRESSURE IN HPA 1025.5 1021.7 1022.4 1020.2 1019.4 1020.0 1017.4 1017.8 1021.1 1027.1 1024.0 1025.8 1027.1 DAY 6 9 31 1 9 23 27 31 23 17 21 26 MIN. QNH PRESSURE IN HPA 1003.9 1008.2 1006.0 1007.9 1009.7 1008.0 1005.3 1007.6 1011.8 1015.1 1009.8 1011.0 1003.9 DAY 8 23 22 13 7 3 13 12 14 3 14 5 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** 1004.2 998.6 996.7 999.7 1003.5 ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** 1012.6 1008.0 1003.5 1004.8 1010.3 ****** ****** ****** ****** DAY ** ** ** ** 9 23 27 25 23 ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** 999.5 994.3 989.8 991.9 997.7 ****** ****** ****** ****** DAY ** ** ** ** 23 13 13 12 14 ** ** ** PRESSURE AT HOUR 1200 UTC. MEAN QFE PRESSURE IN HPA 842.3 841.1 840.6 840.0 841.0 838.4 838.1 839.8 841.3 846.8 844.0 845.0 841.5 MAX. QFE PRESSURE IN HPA 850.5 846.6 847.0 845.4 844.9 845.0 843.0 843.0 846.3 851.5 849.3 850.6 851.5 DAY 6 9 31 16 9 23 27 30 23 17 21 26 MIN. QFE PRESSURE IN HPA 832.3 834.4 834.0 834.6 836.2 834.6 833.1 834.0 837.7 841.2 838.0 838.3 832.3 DAY 8 3 12 13 7 3 13 12 3 3 13 4 MEAN QNH PRESSURE IN HPA 1015.0 1013.7 1013.1 1012.4 1013.5 1010.5 1010.1 1012.2 1014.0 1020.3 1017.0 1018.2 1014.2 MAX. QNH PRESSURE IN HPA 1024.6 1020.1 1020.6 1018.7 1018.1 1018.2 1015.9 1015.9 1019.7 1025.8 1023.2 1024.7 1025.8 DAY 6 9 31 16 9 23 27 30 23 17 21 26 MIN. QNH PRESSURE IN HPA 1003.4 1005.9 1005.4 1006.1 1008.0 1006.1 1004.4 1005.4 1009.7 1013.8 1010.1 1010.4 1003.4 DAY 8 3 12 13 7 3 13 12 3 3 13 4 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** 1003.1 997.0 995.6 998.2 1001.7 ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** 1011.2 1007.3 1002.2 1003.7 1009.0 ****** ****** ****** ****** DAY ** ** ** ** 9 23 27 25 23 ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** 998.2 992.5 989.1 990.6 995.5 ****** ****** ****** ****** DAY ** ** ** ** 31 16 13 12 3 ** ** ** ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION NAEIN (40801) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 32 51 N LONGITUDE 53 5 E DATA PROCESSING CENTER ELEVATION 1549.0 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 843.1 841.9 841.0 840.2 840.8 837.9 837.8 839.5 841.3 847.2 844.7 846.0 841.8 MAX. QFE PRESSURE IN HPA 851.0 847.4 846.9 845.9 844.9 844.6 842.5 843.2 846.5 851.7 849.4 851.5 851.7 DAY 6 9 30 16 9 22 27 30 23 16 21 26 MIN. QFE PRESSURE IN HPA 832.8 835.1 834.5 835.2 836.7 834.1 833.1 833.5 837.5 841.8 838.2 838.9 832.8 DAY 8 4 21 13 7 3 12 12 3 3 10 4 MEAN QNH PRESSURE IN HPA 1016.1 1014.7 1013.6 1012.7 1013.3 1010.0 1009.8 1011.8 1013.9 1020.8 1017.9 1019.3 1014.5 MAX. QNH PRESSURE IN HPA 1025.2 1021.0 1020.4 1019.3 1018.1 1017.8 1015.3 1016.1 1020.0 1026.0 1023.3 1025.8 1026.0 DAY 6 9 30 16 9 22 27 30 23 16 21 26 MIN. QNH PRESSURE IN HPA 1004.0 1006.7 1006.0 1006.8 1008.6 1005.5 1004.4 1004.8 1009.5 1014.5 1010.3 1011.1 1004.0 DAY 8 4 21 13 7 3 12 12 3 3 10 4 MEAN QFF PRESSURE IN HPA 1019.1 1014.7 1011.6 1005.6 1003.4 996.5 995.5 998.4 1002.5 1015.1 1015.9 1019.8 1008.2 MAX. QFF PRESSURE IN HPA 1028.8 1023.5 1020.9 1012.6 1011.6 1006.2 1002.3 1003.4 1009.8 1021.9 1026.1 1026.1 1028.8 DAY 6 9 23 3 9 23 27 25 23 8 30 26 MIN. QFF PRESSURE IN HPA 1004.9 1003.5 1002.6 998.8 998.5 991.8 988.9 989.7 996.5 1005.6 1003.5 1011.2 988.9 DAY 8 21 8 20 20 18 13 12 13 2 10 4 PRESSURE AT HOUR 1800 UTC. MEAN QFE PRESSURE IN HPA ****** ****** ****** ****** 842.1 839.3 839.0 840.8 842.6 ****** ****** ****** ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** ****** 845.6 845.9 844.1 845.0 847.5 ****** ****** ****** ****** DAY ** ** ** ** 9 22 27 30 23 ** ** ** MIN. QFE PRESSURE IN HPA ****** ****** ****** ****** 839.1 835.0 834.0 834.8 838.8 ****** ****** ****** ****** DAY ** ** ** ** 31 3 13 12 3 ** ** ** MEAN QNH PRESSURE IN HPA ****** ****** ****** ****** 1014.9 1011.6 1011.3 1013.4 1015.4 ****** ****** ****** ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** ****** 1018.9 1019.3 1017.2 1018.2 1021.1 ****** ****** ****** ****** DAY ** ** ** ** 9 22 27 30 23 ** ** ** MIN. QNH PRESSURE IN HPA ****** ****** ****** ****** 1011.4 1006.6 1005.4 1006.4 1011.0 ****** ****** ****** ****** DAY ** ** ** ** 31 3 13 12 3 ** ** ** MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** 1004.2 997.1 995.9 998.7 1002.6 ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** 1012.0 1006.8 1002.3 1004.0 1009.4 ****** ****** ****** ****** DAY ** ** ** ** 9 22 27 25 23 ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** 999.0 992.1 989.2 990.4 996.5 ****** ****** ****** ****** DAY ** ** ** ** 20 18 13 22 3 ** ** ** PRESSURE AT HOUR 2100 UTC. MEAN QFE PRESSURE IN HPA ****** ****** ****** ****** 842.2 839.6 839.2 841.2 842.5 ****** ****** ****** ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** ****** 846.1 846.5 843.7 845.0 846.9 ****** ****** ****** ****** DAY ** ** ** ** 9 22 27 30 23 ** ** ** MIN. QFE PRESSURE IN HPA ****** ****** ****** ****** 839.0 835.8 834.2 835.7 838.5 ****** ****** ****** ****** DAY ** ** ** ** 31 3 12 12 13 ** ** ** MEAN QNH PRESSURE IN HPA ****** ****** ****** ****** 1015.0 1011.9 1011.4 1013.8 1015.3 ****** ****** ****** ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** ****** 1019.5 1020.0 1016.7 1018.2 1020.4 ****** ****** ****** ****** DAY ** ** ** ** 9 22 27 30 23 ** ** ** MIN. QNH PRESSURE IN HPA ****** ****** ****** ****** 1011.2 1007.5 1005.7 1007.4 1010.7 ****** ****** ****** ****** DAY ** ** ** ** 31 3 12 12 13 ** ** ** MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** 1004.3 998.2 996.6 999.5 1003.2 ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** 1012.7 1008.2 1002.4 1005.1 1009.8 ****** ****** ****** ****** DAY ** ** ** ** 9 22 27 25 23 ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** 998.8 993.2 989.7 990.3 996.4 ****** ****** ****** ****** DAY ** ** ** ** 20 18 13 22 13 ** ** ** ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION NAEIN (40801) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 32 51 N LONGITUDE 53 5 E DATA PROCESSING CENTER ELEVATION 1549.0 M MEANS AND EXTREMES FOR THE YEAR 1994 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AIR TEMPERATURE (C) 6.9 7.0 12.9 18.7 23.3 29.4 32.3 31.9 22.9 17.5 14.2 5.1 18.5 MINIMUN AIR TEMPERATURE (C) -0.8 -1.3 4.8 10.2 14.3 19.0 22.4 21.1 12.8 10.0 7.0 -3.0 9.7 DAYS WITH MINIMUM TEMP. >=21 0 0 0 0 0 4 24 13 0 0 0 0 41 DAYS WITH MINIMUM TEMP. <=-4 6 9 0 0 0 0 0 0 0 0 0 14 29 DAYS WITH FREEZING MIN.<= 0 22 21 1 0 0 0 0 0 0 0 1 20 65 TEMPERATURE RECORDS LOWEST(C) -6.7 -6.2 0.0 1.0 9.8 15.0 19.5 17.8 7.5 4.6 0.0 -13.0 -13.0 DAY 11 4 16 5 2 9 2 22 22 10 14 8 MAXIMUM AIR TEMPERATURE (C) 11.8 11.9 17.5 23.2 27.8 34.2 37.0 36.7 27.6 22.1 18.7 10.6 23.2 DAYS WITH MAXIMUM TEMP. >=30 0 0 0 1 8 29 31 31 6 0 0 0 106 DAYS WITH MAXIMUM TEMP. <= 0 0 0 0 0 0 0 0 0 0 0 0 1 1 TEMPERATURE RECORDS HIGHEST(C) 19.5 18.5 24.0 30.4 31.4 38.0 40.2 40.5 33.0 27.6 23.2 18.0 40.5 DAY 3 28 30 25 31 26 7 5 1 1 4 3 DIF. BETWEEN (MAX.-MIN.) (C) 12.6 13.2 12.7 13.0 13.5 15.2 14.6 15.6 14.8 12.1 11.7 13.6 13.5 MEAN DAILY TEMP. (MDT) (C) 5.5 5.3 11.1 16.7 21.0 26.6 29.7 28.9 20.2 16.0 12.9 3.8 16.5 COOLING DEG. DAYS(BASE 21 0C) 0.0 0.0 0.0 5.0 27.8 167.3 269.8 244.4 21.7 0.3 0.0 0.0 736.4 HEATING DEG. DAYS(BASE 18 0C) 388.3 355.8 213.2 70.0 1.9 0.0 0.0 0.0 9.8 67.6 154.2 440.8 1701.5 DEWPOINT (MEAN C) -6.7 -9.3 -3.2 -0.8 -0.3 3.0 8.9 0.9 -1.9 2.1 -2.3 -9.4 -1.6 MIXING RATIO (G/KG) 2.91 2.47 3.84 4.46 4.68 5.92 8.88 5.26 4.11 5.66 4.25 2.45 4.58 VAPOUR PRESSURE (HPA) 3.93 3.32 5.16 6.00 6.28 7.88 11.75 7.02 5.54 7.62 5.72 3.31 6.13 SATURATION DEF. (HPA) 6.65 7.35 10.38 16.84 23.18 34.60 38.35 41.81 23.56 12.97 11.08 6.25 19.42 RELATIVE HUMIDITY (MEAN %) 41 35 37 30 24 20 25 15 21 40 37 36 30 RELATIVE HUMIDITY (MAX. %) 58 52 56 47 39 30 33 25 30 59 55 52 45 RELATIVE HUMIDITY (MIN. %) 28 23 25 21 15 15 20 11 15 28 24 25 21 RELATIVE HUMIDITY (MEAN% 03UTC) 54 48 54 46 38 30 33 24 30 58 51 48 43 RELATIVE HUMIDITY (MEAN% 09UTC) 33 27 31 24 19 17 23 13 18 32 29 29 25 RELATIVE HUMIDITY (MEAN% 15UTC) 43 36 35 26 20 16 22 13 19 41 37 38 29 RH=0 => RELATIVE HUMIDITY < 0.5% AMOUNT OF PRECIPITATION MM. 6.0 11.2 26.7 18.4 5.0 0.0 0.0 0.0 0.0 11.8 8.0 0.0 87.1 DAYS WITH PRECIPITATION >=10 0 0 1 1 0 0 0 0 0 0 0 0 2 DAYS WITH PRECIPITATION >= 5 1 1 2 1 0 0 0 0 0 0 1 0 6 DAYS WITH PRECIPITATION >= 1 2 3 5 1 2 0 0 0 0 5 3 0 21 DAYS WITH PRECIPITATION 3 4 7 4 3 0 0 0 0 9 3 0 33 GREATEST DAILY PRECIPITATION 5.0 5.0 13.0 18.0 4.0 0.0 0.0 0.0 0.0 4.0 6.0 0.0 18.0 DAY 24 19 12 11 1 ** ** ** ** 22 17 ** DAY WITH THUNDER STORM 0 0 0 0 3 0 0 0 0 0 0 0 3 DAYS WITH SNOW OR SLEET 2 1 0 0 0 0 0 0 0 0 0 0 3 DAYS WITH DUST 4 4 6 8 11 9 3 1 1 0 3 4 54 WIND DIRECTION (PREVAILING) 270 270 270 270 270 270 45 45 45 45 180 270 270 PREVAILING WIND SPEED(KNOTS) 7.0 7.1 9.6 8.6 9.5 9.1 9.8 9.3 8.6 6.1 12.5 8.1 8.2 PREVAILING WIND PERCENT 19.4 22.9 14.8 16.0 21.3 22.7 33.5 29.7 27.3 21.3 24.7 12.9 17.8 CALMS PERCENT OF WIND 40.6 31.4 36.8 26.7 25.8 20.7 16.8 14.8 30.7 31.6 24.0 43.2 28.6 NO. OF WIND OBSERVATION 155 140 155 150 155 150 155 155 150 155 150 155 1825 VECTOR WIND DIRECTION (MEAN) 235 243 233 275 256 326 35 36 15 334 205 210 288 VECTOR WIND MAGNITUDE(KNOTS) 1.7 2.3 2.0 1.5 1.8 2.1 4.5 4.0 2.8 1.5 4.6 2.8 0.7 WIND STEADINESES (MEAN %) 35.4 36.5 34.5 25.0 26.1 30.9 56.3 53.3 52.8 32.6 59.7 46.7 11.1 WIND SPEED (MEAN KNOTS) 4.8 6.3 5.8 6.0 6.9 6.8 8.0 7.5 5.3 4.6 7.7 6.0 6.3 FASTEST WIND DIRECTION 210 210 210 210 260 220 10 30 280 280 230 180 230 FASTEST WIND SPEED (KNOTS) 23 31 25 27 27 19 19 19 16 17 39 39 39 DAY 5 1 7 2 6 3 9 4 5 31 30 2 DAYS WITH SKY CLEAR (0-2)/8 12 17 17 11 15 27 27 30 25 7 12 23 223 DAYS WITH P.CLOUDY (3-6)/8 14 9 11 14 15 3 4 1 5 21 14 5 116 DAYS WITH CLOUDY (7-8)/8 5 2 3 5 1 0 0 0 0 3 4 3 26 DAYS WITH VISIBILITY =< 2 KM 0 2 0 0 0 0 0 0 0 1 0 0 3 DURATION OF SUNSHINE HOURS 201.4 228.9 256.4 229.9 295.2 352.3 358.8 360.0 312.4 229.9 187.0 245.4 3257.6 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION NAEIN (40801) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 32 51 N LONGITUDE 53 5 E DATA PROCESSING CENTER ELEVATION 1549.0 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 843.5 840.4 841.3 842.8 841.7 837.0 835.7 837.7 845.1 847.1 844.4 844.6 841.8 MAX. QFE PRESSURE IN HPA 852.6 847.7 847.6 851.7 846.6 843.0 840.2 842.4 853.3 853.1 851.7 851.0 853.3 DAY-HOUR 10- 6 20- 6 18- 6 5- 6 15- 3 9- 6 13- 6 16- 6 23- 6 10- 6 2- 6 22- 6 MIN. QFE PRESSURE IN HPA 831.8 832.0 832.6 834.4 834.1 831.2 830.8 832.5 837.8 840.9 834.3 831.6 830.8 DAY-HOUR 16-12 12-12 12- 3 2-12 1-12 28-15 7-15 2-15 2-15 2-12 26- 3 4-12 MEAN QNH PRESSURE IN HPA 1016.4 1012.9 1013.9 1015.6 1014.4 1008.9 1007.3 1009.7 1018.4 1020.6 1017.5 1017.8 1014.5 MAX. QNH PRESSURE IN HPA 1027.1 1021.4 1021.2 1026.0 1020.1 1015.9 1012.6 1015.2 1027.9 1027.6 1026.0 1025.2 1027.9 DAY-HOUR 10- 6 20- 6 18- 6 5- 6 15- 3 9- 6 13- 6 16- 6 23- 6 10- 6 2- 6 22- 6 MIN. QNH PRESSURE IN HPA 1002.9 1003.1 1003.8 1005.9 1005.5 1002.2 1001.7 1003.7 1009.8 1013.5 1005.8 1002.6 1001.7 DAY-HOUR 16-12 12-12 12- 3 2-12 1-12 28-15 7-15 2-15 2-15 2-12 26- 3 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 843.7 840.6 841.6 843.4 842.4 837.9 836.4 838.3 845.5 847.4 844.6 844.7 842.2 MAX. QFE PRESSURE IN HPA 851.8 846.6 846.4 849.8 846.6 842.3 839.8 842.0 852.1 852.4 850.4 850.2 852.4 DAY 10 20 18 5 15 9 3 16 23 10 2 22 MIN. QFE PRESSURE IN HPA 835.8 832.3 832.6 837.6 836.6 833.5 832.6 833.9 839.1 844.1 834.3 832.2 832.2 DAY 16 12 12 3 1 22 8 2 1 2 26 4 MEAN QNH PRESSURE IN HPA 1016.8 1013.2 1014.2 1016.3 1015.1 1009.9 1008.2 1010.4 1018.8 1021.0 1017.7 1017.9 1015.0 MAX. QNH PRESSURE IN HPA 1026.1 1020.1 1019.9 1023.8 1020.1 1015.1 1012.2 1014.7 1026.5 1026.8 1024.5 1024.3 1026.8 DAY 10 20 18 5 15 9 3 16 23 10 2 22 MIN. QNH PRESSURE IN HPA 1007.5 1003.4 1003.8 1009.6 1008.4 1004.8 1003.8 1005.3 1011.4 1017.2 1005.8 1003.3 1003.3 DAY 16 12 12 3 1 22 8 2 1 2 26 4 MEAN QFF PRESSURE IN HPA 1017.5 1013.6 1010.7 1009.1 1005.0 995.9 992.5 995.5 1009.5 1014.7 1013.4 1020.3 1008.1 MAX. QFF PRESSURE IN HPA 1029.7 1025.6 1018.4 1021.7 1009.5 1002.6 998.2 1000.5 1020.0 1023.4 1019.6 1031.4 1031.4 DAY 10 20 18 5 15 9 3 23 23 10 10 8 MIN. QFF PRESSURE IN HPA 1005.2 997.5 999.2 1001.1 1000.1 988.8 987.1 989.9 998.4 1007.6 1001.9 999.5 987.1 DAY 16 1 12 27 13 22 8 2 1 2 26 4 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION NAEIN (40801) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 32 51 N LONGITUDE 53 5 E DATA PROCESSING CENTER ELEVATION 1549.0 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 844.8 841.8 842.6 844.1 842.8 838.3 836.8 838.9 846.4 848.3 845.6 845.7 843.0 MAX. QFE PRESSURE IN HPA 852.6 847.7 847.6 851.7 846.4 843.0 840.2 842.4 853.3 853.1 851.7 851.0 853.3 DAY 10 20 18 5 15 9 13 16 23 10 2 22 MIN. QFE PRESSURE IN HPA 836.6 833.4 833.8 838.3 837.3 833.8 832.6 834.5 840.3 844.7 837.3 833.7 832.6 DAY 16 12 12 2 1 29 8 2 1 2 26 4 MEAN QNH PRESSURE IN HPA 1018.0 1014.5 1015.5 1017.2 1015.7 1010.5 1008.6 1011.1 1019.8 1022.1 1018.9 1019.1 1015.9 MAX. QNH PRESSURE IN HPA 1027.1 1021.4 1021.2 1026.0 1019.9 1015.9 1012.6 1015.2 1027.9 1027.6 1026.0 1025.2 1027.9 DAY 10 20 18 5 15 9 13 16 23 10 2 22 MIN. QNH PRESSURE IN HPA 1008.4 1004.7 1005.2 1010.4 1009.3 1005.2 1003.8 1006.0 1012.8 1017.9 1009.3 1005.1 1003.8 DAY 16 12 12 2 1 29 8 2 1 2 26 4 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** PRESSURE AT HOUR 0900 UTC. MEAN QFE PRESSURE IN HPA 843.4 840.6 841.7 843.0 842.0 837.4 836.2 838.2 845.5 847.2 844.3 844.6 842.0 MAX. QFE PRESSURE IN HPA 851.0 846.9 846.8 851.7 846.0 842.5 839.4 842.0 852.3 852.2 850.8 849.4 852.3 DAY 10 20 18 5 15 8 13 15 23 10 2 22 MIN. QFE PRESSURE IN HPA 833.2 833.2 834.0 836.0 836.1 832.5 832.5 833.8 839.6 843.0 837.2 832.0 832.0 DAY 16 12 12 2 1 29 8 2 1 2 26 4 MEAN QNH PRESSURE IN HPA 1016.4 1013.1 1014.4 1015.9 1014.7 1009.4 1007.9 1010.3 1018.8 1020.8 1017.4 1017.8 1014.7 MAX. QNH PRESSURE IN HPA 1025.2 1020.4 1020.3 1026.0 1019.4 1015.3 1011.7 1014.7 1026.7 1026.6 1025.0 1023.3 1026.7 DAY 10 20 18 5 15 8 13 15 23 10 2 22 MIN. QNH PRESSURE IN HPA 1004.5 1004.5 1005.4 1007.7 1007.9 1003.7 1003.7 1005.2 1011.9 1015.9 1009.1 1003.1 1003.1 DAY 16 12 12 2 1 29 8 2 1 2 26 4 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** PRESSURE AT HOUR 1200 UTC. MEAN QFE PRESSURE IN HPA 842.3 839.2 840.2 841.6 840.8 835.9 834.8 836.7 844.1 846.1 843.4 843.5 840.7 MAX. QFE PRESSURE IN HPA 850.0 845.8 845.2 850.4 844.0 841.0 838.4 840.1 851.0 850.8 849.5 848.8 851.0 DAY 9 20 18 5 18 8 13 15 23 10 2 7 MIN. QFE PRESSURE IN HPA 831.8 832.0 832.8 834.4 834.1 831.9 831.6 832.9 838.3 840.9 837.8 831.6 831.6 DAY 16 12 12 2 1 29 7 1 1 2 26 4 MEAN QNH PRESSURE IN HPA 1015.1 1011.5 1012.6 1014.3 1013.4 1007.6 1006.3 1008.6 1017.2 1019.4 1016.3 1016.5 1013.2 MAX. QNH PRESSURE IN HPA 1024.0 1019.2 1018.5 1024.5 1017.1 1013.6 1010.5 1012.5 1025.2 1025.0 1023.5 1022.6 1025.2 DAY 9 20 18 5 18 8 13 15 23 10 2 7 MIN. QNH PRESSURE IN HPA 1002.9 1003.1 1004.0 1005.9 1005.5 1003.0 1002.6 1004.1 1010.4 1013.5 1009.8 1002.6 1002.6 DAY 16 12 12 2 1 29 7 1 1 2 26 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 NAEIN (40801) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 32 51 N LONGITUDE 53 5 E DATA PROCESSING CENTER ELEVATION 1549.0 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 843.0 839.9 840.5 841.8 840.7 835.4 834.3 836.4 844.1 846.5 844.0 844.4 840.9 MAX. QFE PRESSURE IN HPA 851.0 845.7 845.6 850.4 843.8 840.5 838.4 839.6 851.0 850.9 849.7 849.6 851.0 DAY 9 20 18 5 18 9 13 22 23 9 2 7 MIN. QFE PRESSURE IN HPA 832.2 833.8 832.8 835.4 834.4 831.2 830.8 832.5 837.8 841.6 838.6 831.9 830.8 DAY 16 12 12 2 1 28 7 2 2 2 25 4 MEAN QNH PRESSURE IN HPA 1015.9 1012.3 1013.0 1014.5 1013.2 1007.0 1005.7 1008.2 1017.2 1020.0 1017.0 1017.6 1013.5 MAX. QNH PRESSURE IN HPA 1025.2 1019.0 1018.9 1024.5 1016.8 1013.0 1010.5 1011.9 1025.2 1025.1 1023.7 1023.6 1025.2 DAY 9 20 18 5 18 9 13 22 23 9 2 7 MIN. QNH PRESSURE IN HPA 1003.3 1005.2 1004.0 1007.1 1005.9 1002.2 1001.7 1003.7 1009.8 1014.3 1010.8 1003.0 1001.7 DAY 16 12 12 2 1 28 7 2 2 2 25 4 MEAN QFF PRESSURE IN HPA 1016.5 1012.6 1009.3 1007.3 1002.9 992.8 989.7 993.3 1007.8 1013.6 1012.7 1019.9 1006.5 MAX. QFF PRESSURE IN HPA 1027.2 1023.3 1016.5 1023.1 1007.6 1000.4 995.6 998.0 1018.4 1021.4 1019.6 1032.5 1032.5 DAY 9 19 3 5 7 8 13 23 23 10 19 7 MIN. QFF PRESSURE IN HPA 999.6 1002.8 1000.1 999.7 996.9 985.6 983.7 987.8 996.7 1004.7 1005.0 1000.1 983.7 DAY 16 1 12 2 1 22 7 2 2 2 25 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 NAEIN (40801) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 32 51 N LONGITUDE 53 5 E DATA PROCESSING CENTER ELEVATION 1549.0 M MEANS AND EXTREMES FOR THE YEAR 1995 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AIR TEMPERATURE (C) 7.6 7.9 11.9 17.1 21.9 27.8 33.2 31.6 26.3 18.6 13.7 3.7 18.4 MINIMUN AIR TEMPERATURE (C) -0.9 0.1 3.2 9.7 13.4 18.4 22.7 20.3 15.7 8.8 3.3 -3.3 9.3 DAYS WITH MINIMUM TEMP. >=21 0 0 0 0 0 2 26 10 0 0 0 0 38 DAYS WITH MINIMUM TEMP. <=-4 6 3 1 0 0 0 0 0 0 0 4 12 26 DAYS WITH FREEZING MIN.<= 0 22 17 7 0 0 0 0 0 0 0 6 29 81 TEMPERATURE RECORDS LOWEST(C) -7.0 -7.0 -4.4 3.5 9.0 11.8 19.0 16.4 9.5 3.6 -8.0 -10.4 -10.4 DAY 25 26 6 8 10 1 27 10 23 27 28 13 MAXIMUM AIR TEMPERATURE (C) 12.7 12.6 16.5 21.7 26.2 32.4 37.9 36.5 31.3 23.6 19.2 7.9 23.2 DAYS WITH MAXIMUM TEMP. >=30 0 0 0 0 3 23 31 31 25 3 0 0 116 DAYS WITH MAXIMUM TEMP. <= 0 0 0 0 0 0 0 0 0 0 0 0 0 0 TEMPERATURE RECORDS HIGHEST(C) 19.0 18.5 24.0 27.4 31.0 38.0 40.8 39.2 36.0 30.5 24.5 14.0 40.8 DAY 17 22 25 3 7 22 13 6 9 3 3 22 DIF. BETWEEN (MAX.-MIN.) (C) 13.6 12.5 13.3 12.0 12.8 14.0 15.2 16.2 15.6 14.8 15.9 11.2 13.9 MEAN DAILY TEMP. (MDT) (C) 5.9 6.4 9.9 15.7 19.8 25.4 30.3 28.4 23.5 16.2 11.3 2.3 16.2 COOLING DEG. DAYS(BASE 21 0C) 0.0 0.0 0.0 0.0 14.5 134.9 287.5 229.9 84.5 4.7 0.0 0.0 756.1 HEATING DEG. DAYS(BASE 18 0C) 375.2 325.7 252.5 75.8 15.4 0.0 0.0 0.0 0.5 86.9 201.6 486.5 1820.2 DEWPOINT (MEAN C) -2.1 -2.0 -5.2 -1.4 0.1 4.0 2.7 0.5 -1.0 -2.0 -4.5 -4.8 -1.3 MIXING RATIO (G/KG) 4.12 4.09 3.39 4.60 4.89 6.30 5.79 5.01 4.38 4.04 3.47 3.29 4.45 VAPOUR PRESSURE (HPA) 5.55 5.49 4.56 6.16 6.57 8.41 7.70 6.70 5.89 5.46 4.69 4.45 5.97 SATURATION DEF. (HPA) 5.40 5.66 10.05 14.12 20.70 30.41 44.91 41.52 29.99 17.52 12.24 3.85 19.70 RELATIVE HUMIDITY (MEAN %) 52 52 35 35 29 24 16 15 19 28 30 58 33 RELATIVE HUMIDITY (MAX. %) 65 68 54 56 46 40 26 22 31 43 44 72 47 RELATIVE HUMIDITY (MIN. %) 42 41 24 23 19 16 11 11 13 19 22 46 24 RELATIVE HUMIDITY (MEAN% 03UTC) 61 65 53 53 45 40 26 21 30 42 44 68 46 RELATIVE HUMIDITY (MEAN% 09UTC) 46 46 28 30 22 20 14 13 15 22 24 51 28 RELATIVE HUMIDITY (MEAN% 15UTC) 55 50 31 31 25 18 12 13 16 25 29 63 31 RH=0 => RELATIVE HUMIDITY < 0.5% AMOUNT OF PRECIPITATION MM. 0.0 0.6 16.6 43.1 32.1 0.6 0.0 0.0 1.1 0.0 0.0 32.4 126.5 DAYS WITH PRECIPITATION >=10 0 0 1 2 1 0 0 0 0 0 0 1 5 DAYS WITH PRECIPITATION >= 5 0 0 1 3 2 0 0 0 0 0 0 3 9 DAYS WITH PRECIPITATION >= 1 0 0 3 7 4 0 0 0 0 0 0 4 18 DAYS WITH PRECIPITATION 1 4 4 8 4 1 0 0 2 0 0 6 30 GREATEST DAILY PRECIPITATION 0.0 0.6 10.0 18.0 19.0 0.6 0.0 0.0 0.6 0.0 0.0 13.0 19.0 DAY ** 7 22 22 29 4 ** ** 16 ** ** 12 DAY WITH THUNDER STORM 0 0 0 2 2 0 0 0 0 0 0 0 4 DAYS WITH SNOW OR SLEET 0 0 0 0 0 0 0 0 0 0 0 3 3 DAYS WITH DUST 1 6 5 5 5 3 4 2 2 1 4 0 38 WIND DIRECTION (PREVAILING) 45 270 270 270 270 270 360 45 45 45 270 270 270 PREVAILING WIND SPEED(KNOTS) 6.6 8.3 8.0 9.3 8.4 9.6 9.6 9.2 7.9 7.1 7.6 6.5 8.2 PREVAILING WIND PERCENT 13.5 15.7 21.9 18.0 21.3 22.7 23.9 22.6 24.0 19.4 16.0 18.1 18.7 CALMS PERCENT OF WIND 44.5 32.1 32.9 24.7 16.8 8.7 6.5 17.4 11.3 25.8 39.3 60.6 26.7 NO. OF WIND OBSERVATION 155 140 155 150 155 150 155 155 150 155 150 155 1825 VECTOR WIND DIRECTION (MEAN) 211 204 252 211 278 338 354 22 45 311 216 292 307 VECTOR WIND MAGNITUDE(KNOTS) 0.8 2.0 1.5 2.2 1.9 1.8 4.4 3.2 1.3 0.9 1.4 0.5 0.7 WIND STEADINESES (MEAN %) 17.4 28.6 23.4 31.4 24.7 21.2 48.4 43.8 16.7 16.1 29.8 20.0 10.8 WIND SPEED (MEAN KNOTS) 4.6 7.0 6.4 7.0 7.7 8.5 9.1 7.3 7.8 5.6 4.7 2.5 6.5 FASTEST WIND DIRECTION 170 190 240 210 220 190 200 30 210 210 190 160 190 FASTEST WIND SPEED (KNOTS) 23 35 31 19 23 19 19 17 23 23 23 16 35 DAY 17 5 26 3 8 15 2 8 20 12 24 31 DAYS WITH SKY CLEAR (0-2)/8 23 13 17 4 11 24 29 30 26 28 23 14 242 DAYS WITH P.CLOUDY (3-6)/8 5 9 10 16 16 6 2 1 4 2 7 8 86 DAYS WITH CLOUDY (7-8)/8 3 6 4 10 4 0 0 0 0 1 0 9 37 DAYS WITH VISIBILITY =< 2 KM 0 0 0 0 0 0 0 0 0 0 0 0 0 DURATION OF SUNSHINE HOURS 110.3 ****** 248.3 204.6 249.6 319.5 359.1 360.9 ****** 305.8 269.1 177.7 ****** ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION NAEIN (40801) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 32 51 N LONGITUDE 53 5 E DATA PROCESSING CENTER ELEVATION 1549.0 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 844.8 842.2 842.0 841.2 843.1 838.8 835.2 839.2 841.7 845.4 844.9 845.5 842.0 MAX. QFE PRESSURE IN HPA 853.0 848.0 850.5 846.0 848.3 845.4 840.0 843.9 848.2 853.7 851.8 849.8 853.7 DAY-HOUR 7- 6 14- 6 3- 6 4- 6 26- 6 1- 6 4- 6 25- 6 13- 6 27- 6 16- 6 10- 6 MIN. QFE PRESSURE IN HPA 839.0 832.8 834.0 834.9 837.6 831.4 830.1 835.0 837.5 839.5 836.8 839.1 830.1 DAY-HOUR 11-12 23-12 26-12 24-15 10-15 22-15 16-15 22-15 19-12 12-12 25-15 4-12 MEAN QNH PRESSURE IN HPA 1018.0 1015.0 1014.7 1013.8 1016.0 1011.0 1006.8 1011.5 1014.4 1018.7 1018.1 1018.8 1014.7 MAX. QNH PRESSURE IN HPA 1027.5 1021.7 1024.6 1019.4 1022.1 1018.7 1012.4 1016.9 1021.9 1028.3 1026.1 1023.8 1028.3 DAY-HOUR 7- 6 14- 6 3- 6 4- 6 26- 6 1- 6 4- 6 25- 6 13- 6 27- 6 16- 6 10- 6 MIN. QNH PRESSURE IN HPA 1011.2 1004.0 1005.4 1006.5 1009.6 1002.4 1000.9 1006.6 1009.5 1011.8 1008.7 1011.4 1000.9 DAY-HOUR 11-12 23-12 26-12 24-15 10-15 22-15 16-15 22-15 19-12 12-12 25-15 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 844.9 842.5 842.1 841.6 843.6 839.6 835.7 839.6 842.3 845.7 845.3 845.8 842.4 MAX. QFE PRESSURE IN HPA 851.6 847.1 848.9 845.1 847.5 844.5 839.4 843.0 847.1 852.8 851.3 849.3 852.8 DAY 7 14 3 1 26 1 4 25 13 27 16 10 MIN. QFE PRESSURE IN HPA 840.5 836.5 835.7 837.2 839.9 835.3 832.0 836.2 838.8 840.5 838.3 841.3 832.0 DAY 17 5 27 24 11 22 17 23 19 13 26 4 MEAN QNH PRESSURE IN HPA 1018.1 1015.3 1014.9 1014.2 1016.6 1011.9 1007.5 1011.9 1015.1 1019.0 1018.5 1019.1 1015.2 MAX. QNH PRESSURE IN HPA 1025.9 1020.7 1022.8 1018.3 1021.1 1017.6 1011.7 1015.9 1020.7 1027.3 1025.5 1023.2 1027.3 DAY 7 14 3 1 26 1 4 25 13 27 16 10 MIN. QNH PRESSURE IN HPA 1013.0 1008.3 1007.4 1009.1 1012.3 1006.9 1003.1 1008.0 1011.0 1013.0 1010.4 1013.9 1003.1 DAY 17 5 27 24 11 22 17 23 19 13 26 4 MEAN QFF PRESSURE IN HPA 1018.4 1014.9 1012.3 1007.7 1007.1 998.7 991.4 997.2 1003.7 1012.5 1015.4 1021.6 1008.4 MAX. QFF PRESSURE IN HPA 1027.0 1022.7 1022.4 1013.8 1013.3 1010.7 996.2 1002.3 1012.8 1024.8 1024.9 1027.3 1027.3 DAY 7 26 3 1 29 1 4 25 22 27 28 20 MIN. QFF PRESSURE IN HPA 1007.8 1003.1 999.8 1003.2 1001.5 990.2 985.8 992.6 998.7 1003.5 1007.9 1012.9 985.8 DAY 17 5 26 19 7 22 11 23 20 13 26 4 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION NAEIN (40801) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 32 51 N LONGITUDE 53 5 E DATA PROCESSING CENTER ELEVATION 1549.0 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 846.1 843.4 843.2 842.6 844.1 840.1 836.2 840.3 843.1 846.7 846.2 846.6 843.2 MAX. QFE PRESSURE IN HPA 853.0 848.0 850.5 846.0 848.3 845.4 840.0 843.9 848.2 853.7 851.8 849.8 853.7 DAY 7 14 3 4 26 1 4 25 13 27 16 10 MIN. QFE PRESSURE IN HPA 841.3 835.6 837.7 838.2 840.7 835.3 832.9 837.2 839.9 841.4 840.1 841.3 832.9 DAY 17 5 26 24 11 22 11 23 19 13 26 4 MEAN QNH PRESSURE IN HPA 1019.5 1016.3 1016.1 1015.4 1017.2 1012.5 1008.0 1012.8 1016.0 1020.2 1019.6 1020.1 1016.1 MAX. QNH PRESSURE IN HPA 1027.5 1021.7 1024.6 1019.4 1022.1 1018.7 1012.4 1016.9 1021.9 1028.3 1026.1 1023.8 1028.3 DAY 7 14 3 4 26 1 4 25 13 27 16 10 MIN. QNH PRESSURE IN HPA 1013.9 1007.3 1009.7 1010.3 1013.2 1006.9 1004.1 1009.1 1012.3 1014.0 1012.5 1013.9 1004.1 DAY 17 5 26 24 11 22 11 23 19 13 26 4 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** PRESSURE AT HOUR 0900 UTC. MEAN QFE PRESSURE IN HPA 845.0 842.6 842.3 841.6 843.4 839.2 835.6 839.8 842.2 845.6 845.0 845.7 842.3 MAX. QFE PRESSURE IN HPA 851.8 847.2 849.5 845.5 848.3 845.3 839.1 843.1 847.0 852.1 850.3 849.8 852.1 DAY 7 14 3 13 26 1 28 25 13 27 16 10 MIN. QFE PRESSURE IN HPA 840.3 836.9 834.5 836.7 839.8 834.3 832.4 836.8 839.1 841.2 839.2 839.9 832.4 DAY 11 9 26 24 11 22 11 8 19 12 26 4 MEAN QNH PRESSURE IN HPA 1018.3 1015.5 1015.1 1014.3 1016.3 1011.5 1007.3 1012.1 1014.9 1019.0 1018.2 1019.0 1015.1 MAX. QNH PRESSURE IN HPA 1026.1 1020.8 1023.5 1018.8 1022.1 1018.6 1011.4 1016.0 1020.6 1026.5 1024.4 1023.8 1026.5 DAY 7 14 3 13 26 1 28 25 13 27 16 10 MIN. QNH PRESSURE IN HPA 1012.8 1008.8 1006.0 1008.6 1012.2 1005.8 1003.6 1008.7 1011.4 1013.8 1011.5 1012.3 1003.6 DAY 11 9 26 24 11 22 11 8 19 12 26 4 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** PRESSURE AT HOUR 1200 UTC. MEAN QFE PRESSURE IN HPA 843.7 841.1 841.0 840.1 842.2 837.8 834.4 838.4 840.5 844.4 843.9 844.4 841.0 MAX. QFE PRESSURE IN HPA 851.0 845.9 847.9 844.4 846.9 843.8 837.9 841.9 845.3 851.6 849.1 848.0 851.6 DAY 7 1 3 13 26 1 28 11 13 27 15 10 MIN. QFE PRESSURE IN HPA 839.0 832.8 834.0 835.0 838.2 831.9 830.9 835.2 837.5 839.5 837.0 839.1 830.9 DAY 11 23 26 24 10 22 16 22 19 12 25 4 MEAN QNH PRESSURE IN HPA 1016.8 1013.7 1013.6 1012.6 1015.0 1009.8 1005.9 1010.5 1013.0 1017.5 1016.9 1017.5 1013.6 MAX. QNH PRESSURE IN HPA 1025.2 1019.3 1021.6 1017.5 1020.4 1016.8 1010.0 1014.6 1018.6 1025.9 1023.0 1021.7 1025.9 DAY 7 1 3 13 26 1 28 11 13 27 15 10 MIN. QNH PRESSURE IN HPA 1011.2 1004.0 1005.4 1006.6 1010.3 1003.0 1001.8 1006.8 1009.5 1011.8 1008.9 1011.4 1001.8 DAY 11 23 26 24 10 22 16 22 19 12 25 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 NAEIN (40801) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 32 51 N LONGITUDE 53 5 E DATA PROCESSING CENTER ELEVATION 1549.0 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 844.5 841.6 841.2 840.2 842.1 837.3 834.0 838.0 840.6 844.7 844.4 845.0 841.1 MAX. QFE PRESSURE IN HPA 851.3 846.6 847.5 844.2 846.7 843.2 837.8 841.7 845.0 852.1 850.2 849.4 852.1 DAY 7 1 3 13 26 1 28 11 13 27 15 10 MIN. QFE PRESSURE IN HPA 839.4 832.8 834.4 834.9 837.6 831.4 830.1 835.0 837.8 839.6 836.8 840.5 830.1 DAY 11 23 26 24 10 22 16 22 19 12 25 4 MEAN QNH PRESSURE IN HPA 1017.6 1014.2 1013.8 1012.6 1014.9 1009.2 1005.4 1010.1 1013.1 1017.9 1017.5 1018.3 1013.7 MAX. QNH PRESSURE IN HPA 1025.5 1020.1 1021.1 1017.3 1020.2 1016.1 1009.8 1014.4 1018.2 1026.5 1024.3 1023.3 1026.5 DAY 7 1 3 13 26 1 28 11 13 27 15 10 MIN. QNH PRESSURE IN HPA 1011.7 1004.0 1005.9 1006.5 1009.6 1002.4 1000.9 1006.6 1009.8 1011.9 1008.7 1013.0 1000.9 DAY 11 23 26 24 10 22 16 22 19 12 25 4 MEAN QFF PRESSURE IN HPA 1017.8 1013.8 1011.0 1006.0 1005.5 995.9 989.3 995.3 1001.7 1011.3 1014.4 1020.6 1006.9 MAX. QFF PRESSURE IN HPA 1027.1 1020.1 1020.7 1011.6 1012.5 1007.0 994.6 1000.5 1009.4 1023.5 1024.6 1027.1 1027.1 DAY 7 12 3 7 29 1 31 11 22 27 28 13 MIN. QFF PRESSURE IN HPA 1006.4 999.4 999.4 1001.0 1000.1 986.1 983.7 991.4 996.6 1002.0 1004.3 1013.0 983.7 DAY 17 23 26 24 7 22 10 23 9 12 25 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 NAEIN (40801) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 32 51 N LONGITUDE 53 5 E DATA PROCESSING CENTER ELEVATION 1549.0 M MEANS AND EXTREMES FOR THE YEAR 1996 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AIR TEMPERATURE (C) 1.4 8.0 9.6 17.8 23.2 29.1 29.3 30.0 28.2 18.8 10.6 8.8 17.9 MINIMUN AIR TEMPERATURE (C) -5.6 1.7 3.3 9.6 14.5 19.0 20.0 19.4 17.0 8.8 2.1 0.5 9.2 DAYS WITH MINIMUM TEMP. >=21 0 0 0 0 0 4 12 4 0 0 0 0 20 DAYS WITH MINIMUM TEMP. <=-4 16 0 0 0 0 0 0 0 0 0 1 2 19 DAYS WITH FREEZING MIN.<= 0 28 9 2 0 0 0 0 0 0 0 5 16 60 TEMPERATURE RECORDS LOWEST(C) -19.2 -3.5 -1.8 1.4 10.2 15.0 16.5 14.6 14.0 2.8 -5.6 -5.0 -19.2 DAY 15 6 1 5 3 18 14 4 28 20 19 4 MAXIMUM AIR TEMPERATURE (C) 5.9 12.5 13.9 22.2 27.5 33.7 33.4 34.5 33.1 23.9 15.0 13.9 22.5 DAYS WITH MAXIMUM TEMP. >=30 0 0 0 0 10 30 31 30 27 0 0 0 128 DAYS WITH MAXIMUM TEMP. <= 0 7 0 0 0 0 0 0 0 0 0 0 0 7 TEMPERATURE RECORDS HIGHEST(C) 13.5 22.5 22.2 27.6 35.6 37.8 36.5 37.5 37.0 29.2 22.5 22.0 37.8 DAY 7 9 30 21 31 9 3 23 9 14 3 27 DIF. BETWEEN (MAX.-MIN.) (C) 11.5 10.8 10.6 12.6 13.0 14.7 13.4 15.1 16.1 15.1 12.9 13.4 13.3 MEAN DAILY TEMP. (MDT) (C) 0.1 7.1 8.6 15.9 21.0 26.3 26.7 26.9 25.1 16.4 8.6 7.2 15.8 COOLING DEG. DAYS(BASE 21 0C) 0.0 0.0 0.0 0.0 42.7 160.3 177.1 183.2 121.9 1.4 0.0 0.0 686.7 HEATING DEG. DAYS(BASE 18 0C) 554.1 315.0 291.0 75.4 6.1 0.0 0.0 0.0 0.0 60.4 283.1 334.8 1919.9 DEWPOINT (MEAN C) -6.2 -1.5 -0.6 0.3 6.4 6.8 7.3 7.6 3.7 1.4 -4.8 -5.4 1.3 MIXING RATIO (G/KG) 3.00 4.19 4.52 4.87 7.31 7.84 8.14 8.15 6.12 5.22 3.24 3.21 5.48 VAPOUR PRESSURE (HPA) 4.05 5.62 6.05 6.54 9.78 10.43 10.84 10.86 8.19 7.03 4.40 4.34 7.34 SATURATION DEF. (HPA) 3.39 5.67 6.49 14.86 20.04 31.14 31.02 33.04 31.76 15.77 9.16 7.55 17.49 RELATIVE HUMIDITY (MEAN %) 60 56 54 33 37 27 27 26 22 34 36 39 38 RELATIVE HUMIDITY (MAX. %) 74 72 74 51 56 37 38 36 32 49 50 53 52 RELATIVE HUMIDITY (MIN. %) 48 42 41 24 27 21 22 21 17 26 27 28 29 RELATIVE HUMIDITY (MEAN% 03UTC) 72 69 73 50 56 37 38 35 32 49 49 51 51 RELATIVE HUMIDITY (MEAN% 09UTC) 53 48 46 27 31 25 24 23 20 28 28 31 32 RELATIVE HUMIDITY (MEAN% 15UTC) 63 54 48 29 34 25 24 23 20 32 37 41 36 RH=0 => RELATIVE HUMIDITY < 0.5% AMOUNT OF PRECIPITATION MM. 18.8 39.2 40.5 2.4 35.4 10.1 0.0 0.0 0.0 3.0 0.0 6.0 155.4 DAYS WITH PRECIPITATION >=10 1 2 1 0 0 0 0 0 0 0 0 0 4 DAYS WITH PRECIPITATION >= 5 1 3 3 0 4 1 0 0 0 0 0 0 12 DAYS WITH PRECIPITATION >= 1 4 7 7 0 7 1 0 0 0 1 0 2 29 DAYS WITH PRECIPITATION 7 12 10 5 9 3 0 0 0 1 0 2 49 GREATEST DAILY PRECIPITATION 11.0 14.0 17.0 0.7 9.0 9.0 0.0 0.0 0.0 3.0 0.0 4.0 17.0 DAY 12 5 4 15 7 29 ** ** ** 17 ** 23 DAY WITH THUNDER STORM 0 0 1 0 3 0 0 0 0 0 0 0 4 DAYS WITH SNOW OR SLEET 2 2 2 0 0 0 0 0 0 0 0 0 6 DAYS WITH DUST 1 0 4 5 2 0 0 0 2 1 0 0 15 WIND DIRECTION (PREVAILING) 270 270 45 180 270 45 360 45 270 270 45 270 270 PREVAILING WIND SPEED(KNOTS) 7.3 8.7 6.3 12.3 7.0 8.4 9.2 8.5 8.4 8.7 6.7 7.2 7.9 PREVAILING WIND PERCENT 23.9 23.4 11.6 14.1 20.8 20.0 25.8 21.3 22.0 19.4 22.0 16.1 18.2 CALMS PERCENT OF WIND 43.2 29.0 38.1 28.9 34.4 20.0 18.7 28.4 32.7 30.3 38.7 38.1 31.7 NO. OF WIND OBSERVATION 155 145 155 149 154 150 155 155 150 155 150 155 1828 VECTOR WIND DIRECTION (MEAN) 237 230 196 244 318 354 5 5 354 341 19 182 319 VECTOR WIND MAGNITUDE(KNOTS) 1.7 2.0 2.3 2.2 0.8 1.6 4.4 2.9 1.0 0.9 1.3 0.7 0.7 WIND STEADINESES (MEAN %) 37.8 29.0 37.1 30.1 16.7 21.6 61.1 50.9 17.5 15.0 30.2 14.6 11.9 WIND SPEED (MEAN KNOTS) 4.5 6.9 6.2 7.3 4.8 7.4 7.2 5.7 5.7 6.0 4.3 4.8 5.9 FASTEST WIND DIRECTION 200 210 180 260 240 240 210 30 210 210 200 190 210 FASTEST WIND SPEED (KNOTS) 17 29 29 27 19 23 19 19 19 21 19 23 29 DAY 5 2 2 10 1 6 8 26 22 27 8 29 DAYS WITH SKY CLEAR (0-2)/8 15 8 10 12 13 24 24 25 30 29 20 17 227 DAYS WITH P.CLOUDY (3-6)/8 6 13 12 13 17 6 7 6 0 2 4 12 98 DAYS WITH CLOUDY (7-8)/8 10 8 9 5 1 0 0 0 0 0 6 2 41 DAYS WITH VISIBILITY =< 2 KM 3 4 2 1 0 0 0 0 0 0 0 0 10 DURATION OF SUNSHINE HOURS 181.8 173.3 187.2 257.6 286.8 361.4 367.4 343.0 302.7 305.5 231.3 240.3 3238.3 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION NAEIN (40801) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 32 51 N LONGITUDE 53 5 E DATA PROCESSING CENTER ELEVATION 1549.0 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 844.4 841.3 839.7 842.4 842.4 839.3 840.3 840.5 840.9 845.3 847.7 846.4 842.5 MAX. QFE PRESSURE IN HPA 851.4 847.5 845.6 847.3 846.3 843.5 845.9 847.1 849.2 853.1 856.9 852.4 856.9 DAY-HOUR 26- 6 24- 6 29- 6 8- 6 17- 6 3- 6 4- 6 30- 6 25- 6 2- 6 18- 6 8- 6 MIN. QFE PRESSURE IN HPA 837.8 831.0 833.7 835.2 836.0 833.2 832.9 834.2 834.2 837.7 841.6 840.5 831.0 DAY-HOUR 6-15 5- 3 13-12 3-12 29-15 19-12 7-15 8-12 20-12 27-12 28-12 16-12 MEAN QNH PRESSURE IN HPA 1017.5 1013.9 1012.1 1015.2 1015.2 1011.6 1012.7 1013.0 1013.5 1018.5 1021.4 1019.8 1015.4 MAX. QNH PRESSURE IN HPA 1025.7 1021.1 1018.9 1020.9 1019.7 1016.5 1019.3 1020.7 1023.1 1027.6 1032.1 1026.8 1032.1 DAY-HOUR 26- 6 24- 6 29- 6 8- 6 17- 6 3- 6 4- 6 30- 6 25- 6 2- 6 18- 6 8- 6 MIN. QNH PRESSURE IN HPA 1009.8 1001.9 1005.1 1006.8 1007.7 1004.5 1004.1 1005.7 1005.7 1009.7 1014.3 1013.0 1001.9 DAY-HOUR 6-15 5- 3 13-12 3-12 29-15 19-12 7-15 8-12 20-12 27-12 28-12 16-12 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 844.3 841.0 840.0 842.8 843.1 840.0 840.9 841.0 841.5 845.7 847.9 846.5 842.9 MAX. QFE PRESSURE IN HPA 850.3 846.8 845.2 846.8 845.9 842.6 845.5 846.5 847.8 852.1 856.0 851.8 856.0 DAY 26 24 29 10 7 3 4 30 25 2 19 8 MIN. QFE PRESSURE IN HPA 839.1 831.0 833.8 838.5 839.5 837.0 835.7 837.2 836.6 840.2 842.5 841.5 831.0 DAY 19 5 13 13 30 19 7 8 20 6 29 25 MEAN QNH PRESSURE IN HPA 1017.4 1013.6 1012.4 1015.7 1016.0 1012.4 1013.4 1013.6 1014.1 1019.0 1021.7 1020.0 1015.8 MAX. QNH PRESSURE IN HPA 1024.4 1020.3 1018.5 1020.3 1019.3 1015.4 1018.8 1020.0 1021.5 1026.5 1031.0 1026.1 1031.0 DAY 26 24 29 10 7 3 4 30 25 2 19 8 MIN. QNH PRESSURE IN HPA 1011.4 1001.9 1005.2 1010.7 1011.8 1008.9 1007.4 1009.1 1008.4 1012.6 1015.3 1014.2 1001.9 DAY 19 5 13 13 30 19 7 8 20 6 29 25 MEAN QFF PRESSURE IN HPA 1021.4 1012.5 1010.4 1008.7 1005.8 998.5 999.4 999.5 1001.6 1012.5 1020.3 1019.7 1009.2 MAX. QFF PRESSURE IN HPA 1031.4 1022.2 1017.4 1019.3 1012.5 1002.6 1003.8 1008.3 1011.1 1022.1 1034.5 1028.8 1034.5 DAY 15 24 29 5 8 27 4 31 25 20 19 4 MIN. QFF PRESSURE IN HPA 1011.1 1000.0 1002.2 999.5 998.0 994.1 993.0 994.6 996.4 1004.6 1012.0 1011.3 993.0 DAY 6 11 13 13 30 6 7 24 19 6 3 15 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION NAEIN (40801) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 32 51 N LONGITUDE 53 5 E DATA PROCESSING CENTER ELEVATION 1549.0 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 845.4 842.4 840.8 843.6 843.5 840.5 841.4 841.7 842.2 846.6 848.9 847.6 843.7 MAX. QFE PRESSURE IN HPA 851.4 847.5 845.6 847.3 846.3 843.5 845.9 847.1 849.2 853.1 856.9 852.4 856.9 DAY 26 24 29 8 17 3 4 30 25 2 18 8 MIN. QFE PRESSURE IN HPA 839.7 831.3 834.1 839.3 840.3 837.0 836.1 836.8 837.0 841.1 843.7 842.3 831.3 DAY 19 5 13 3 29 6 7 8 20 6 29 25 MEAN QNH PRESSURE IN HPA 1018.7 1015.2 1013.4 1016.6 1016.5 1013.0 1014.0 1014.3 1015.0 1020.1 1022.8 1021.2 1016.7 MAX. QNH PRESSURE IN HPA 1025.7 1021.1 1018.9 1020.9 1019.7 1016.5 1019.3 1020.7 1023.1 1027.6 1032.1 1026.8 1032.1 DAY 26 24 29 8 17 3 4 30 25 2 18 8 MIN. QNH PRESSURE IN HPA 1012.1 1002.3 1005.5 1011.6 1012.8 1008.9 1007.9 1008.7 1008.9 1013.7 1016.7 1015.1 1002.3 DAY 19 5 13 3 29 6 7 8 20 6 29 25 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** PRESSURE AT HOUR 0900 UTC. MEAN QFE PRESSURE IN HPA 844.7 841.7 840.1 842.7 842.8 839.8 840.8 841.0 841.4 845.4 847.9 846.5 842.9 MAX. QFE PRESSURE IN HPA 850.5 847.0 844.8 846.1 846.3 842.6 845.8 846.7 848.1 852.1 856.1 851.4 856.1 DAY 26 24 29 8 17 3 3 30 25 2 18 2 MIN. QFE PRESSURE IN HPA 838.9 831.0 834.6 836.0 838.3 836.0 834.5 835.7 835.8 839.1 842.4 841.7 831.0 DAY 12 5 13 3 29 19 7 8 20 27 28 25 MEAN QNH PRESSURE IN HPA 1017.9 1014.3 1012.5 1015.5 1015.7 1012.2 1013.3 1013.5 1014.1 1018.7 1021.5 1020.0 1015.8 MAX. QNH PRESSURE IN HPA 1024.6 1020.6 1018.0 1019.5 1019.7 1015.4 1019.2 1020.2 1021.8 1026.5 1031.1 1025.7 1031.1 DAY 26 24 29 8 17 3 3 30 25 2 18 2 MIN. QNH PRESSURE IN HPA 1011.1 1001.9 1006.1 1007.7 1010.4 1007.7 1006.0 1007.4 1007.5 1011.4 1015.2 1014.4 1001.9 DAY 12 5 13 3 29 19 7 8 20 27 28 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 843.6 840.4 838.7 841.3 841.5 838.3 839.4 839.6 839.8 844.1 846.8 845.3 841.6 MAX. QFE PRESSURE IN HPA 849.1 845.8 842.5 845.4 845.0 840.8 845.5 844.6 846.6 850.1 855.1 850.2 855.1 DAY 26 8 29 10 17 3 3 29 25 2 18 7 MIN. QFE PRESSURE IN HPA 838.1 831.0 833.7 835.2 836.9 833.2 833.7 834.2 834.2 837.7 841.6 840.5 831.0 DAY 12 5 13 3 29 19 7 8 20 27 28 16 MEAN QNH PRESSURE IN HPA 1016.5 1012.9 1010.9 1013.9 1014.1 1010.4 1011.7 1012.0 1012.2 1017.2 1020.3 1018.6 1014.2 MAX. QNH PRESSURE IN HPA 1023.0 1019.2 1015.3 1018.7 1018.2 1013.3 1018.8 1017.8 1020.1 1024.2 1030.0 1024.3 1030.0 DAY 26 8 29 10 17 3 3 29 25 2 18 7 MIN. QNH PRESSURE IN HPA 1010.2 1001.9 1005.1 1006.8 1008.8 1004.5 1005.1 1005.7 1005.7 1009.7 1014.3 1013.0 1001.9 DAY 12 5 13 3 29 19 7 8 20 27 28 16 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION NAEIN (40801) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 32 51 N LONGITUDE 53 5 E DATA PROCESSING CENTER ELEVATION 1549.0 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 844.0 840.9 839.0 841.6 841.3 837.8 839.1 839.3 839.7 844.5 847.3 846.0 841.7 MAX. QFE PRESSURE IN HPA 849.8 846.7 842.5 845.9 845.9 841.0 844.0 844.8 846.8 850.9 855.8 850.8 855.8 DAY 26 8 29 10 7 28 3 31 25 2 18 7 MIN. QFE PRESSURE IN HPA 837.8 832.2 834.2 835.9 836.0 833.3 832.9 834.2 834.5 838.6 842.2 841.5 832.2 DAY 6 5 13 18 29 19 7 8 21 27 28 25 MEAN QNH PRESSURE IN HPA 1017.1 1013.5 1011.2 1014.2 1013.9 1009.9 1011.3 1011.6 1012.1 1017.7 1020.9 1019.3 1014.4 MAX. QNH PRESSURE IN HPA 1023.8 1020.2 1015.3 1019.3 1019.3 1013.6 1017.1 1018.0 1020.3 1025.1 1030.8 1025.0 1030.8 DAY 26 8 29 10 7 28 3 31 25 2 18 7 MIN. QNH PRESSURE IN HPA 1009.8 1003.3 1005.7 1007.6 1007.7 1004.6 1004.1 1005.7 1006.0 1010.8 1015.0 1014.2 1003.3 DAY 6 5 13 18 29 19 7 8 21 27 28 25 MEAN QFF PRESSURE IN HPA 1021.0 1012.4 1009.0 1007.2 1003.5 995.7 997.2 997.3 999.4 1011.1 1019.4 1018.9 1007.7 MAX. QFF PRESSURE IN HPA 1032.1 1021.5 1014.9 1016.8 1013.3 1001.3 1002.1 1006.1 1009.2 1020.6 1033.1 1027.8 1033.1 DAY 14 13 15 4 7 28 3 31 25 19 18 3 MIN. QFF PRESSURE IN HPA 1006.9 1001.5 1001.4 998.4 993.4 990.7 988.7 991.5 994.1 1003.1 1011.6 1011.8 988.7 DAY 6 10 25 18 29 9 7 8 19 27 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 NAEIN (40801) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 32 51 N LONGITUDE 53 5 E DATA PROCESSING CENTER ELEVATION 1549.0 M MEANS AND EXTREMES FOR THE YEAR 1997 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AIR TEMPERATURE (C) 6.8 7.0 9.5 17.3 23.0 28.6 33.7 31.6 26.4 21.2 11.0 6.7 18.6 MINIMUN AIR TEMPERATURE (C) -0.7 -2.4 2.1 8.5 13.8 19.4 23.7 20.1 16.1 12.5 4.2 -0.2 9.8 DAYS WITH MINIMUM TEMP. >=21 0 0 0 0 0 6 29 13 1 1 0 0 50 DAYS WITH MINIMUM TEMP. <=-4 5 12 3 0 0 0 0 0 0 0 0 3 23 DAYS WITH FREEZING MIN.<= 0 19 21 7 2 0 0 0 0 0 0 2 19 70 TEMPERATURE RECORDS LOWEST(C) -5.6 -12.2 -6.0 -2.4 6.0 16.5 18.4 14.0 12.4 7.2 -1.2 -6.6 -12.2 DAY 19 8 9 12 6 2 1 30 10 28 30 28 MAXIMUM AIR TEMPERATURE (C) 11.2 12.1 13.8 21.9 27.5 32.8 38.6 36.5 31.4 25.7 15.0 11.2 23.1 DAYS WITH MAXIMUM TEMP. >=30 0 0 0 0 9 28 31 31 21 4 0 0 124 DAYS WITH MAXIMUM TEMP. <= 0 0 0 0 0 0 0 0 0 0 0 0 0 0 TEMPERATURE RECORDS HIGHEST(C) 16.4 21.6 19.2 28.5 33.5 36.6 41.2 41.0 36.2 31.8 21.4 17.6 41.2 DAY 7 22 31 28 28 16 14 15 1 3 4 8 DIF. BETWEEN (MAX.-MIN.) (C) 11.9 14.5 11.7 13.4 13.7 13.4 14.9 16.4 15.3 13.2 10.8 11.4 13.3 MEAN DAILY TEMP. (MDT) (C) 5.3 4.8 7.9 15.2 20.6 26.1 31.2 28.3 23.8 19.1 9.6 5.5 16.5 COOLING DEG. DAYS(BASE 21 0C) 0.0 0.0 0.0 0.5 31.6 152.5 315.2 226.6 86.6 18.2 0.0 0.0 831.4 HEATING DEG. DAYS(BASE 18 0C) 394.3 368.6 312.2 94.3 9.0 0.0 0.0 0.0 0.0 21.5 251.4 387.2 1838.7 DEWPOINT (MEAN C) -4.7 -12.8 -6.1 -1.1 5.1 6.1 9.0 -2.1 -2.0 -0.8 -2.1 -3.7 -1.3 MIXING RATIO (G/KG) 3.34 1.85 3.15 4.51 6.77 7.22 8.84 4.19 4.10 4.44 4.02 3.55 4.66 VAPOUR PRESSURE (HPA) 4.50 2.50 4.22 6.04 9.06 9.63 11.71 5.61 5.52 5.99 5.43 4.78 6.25 SATURATION DEF. (HPA) 5.86 8.38 8.23 14.81 20.29 30.56 42.43 42.88 30.55 20.36 8.16 5.54 19.84 RELATIVE HUMIDITY (MEAN %) 48 26 38 32 33 26 23 13 17 26 44 52 32 RELATIVE HUMIDITY (MAX. %) 63 39 55 50 47 38 31 19 27 40 64 71 45 RELATIVE HUMIDITY (MIN. %) 36 17 26 22 25 19 18 9 12 18 31 37 23 RELATIVE HUMIDITY (MEAN% 03UTC) 61 38 53 47 46 38 31 19 27 40 64 67 44 RELATIVE HUMIDITY (MEAN% 09UTC) 39 21 31 27 28 22 20 10 14 20 33 42 26 RELATIVE HUMIDITY (MEAN% 15UTC) 49 22 35 28 30 23 20 10 15 25 42 55 30 RH=0 => RELATIVE HUMIDITY < 0.5% AMOUNT OF PRECIPITATION MM. 5.6 0.0 13.8 9.1 10.7 3.8 0.0 0.0 0.0 6.5 5.9 24.2 79.6 DAYS WITH PRECIPITATION >=10 0 0 0 0 0 0 0 0 0 0 0 1 1 DAYS WITH PRECIPITATION >= 5 0 0 1 1 1 0 0 0 0 1 1 2 7 DAYS WITH PRECIPITATION >= 1 2 0 4 2 2 1 0 0 0 2 1 5 19 DAYS WITH PRECIPITATION 3 0 6 5 3 4 0 0 0 3 3 7 34 GREATEST DAILY PRECIPITATION 4.0 0.0 6.0 5.0 9.0 2.0 0.0 0.0 0.0 5.0 5.0 16.0 16.0 DAY 17 ** 13 24 21 19 ** ** ** 24 13 21 DAY WITH THUNDER STORM 0 0 0 0 1 0 0 0 0 1 0 0 2 DAYS WITH SNOW OR SLEET 1 0 2 0 0 0 0 0 0 0 0 2 5 DAYS WITH DUST 1 2 3 5 1 1 1 0 1 2 0 0 17 WIND DIRECTION (PREVAILING) 270 270 180 225 270 270 45 45 270 270 270 270 270 PREVAILING WIND SPEED(KNOTS) 7.5 9.0 14.0 14.4 9.4 9.5 9.7 10.1 9.5 8.6 6.0 7.8 8.4 PREVAILING WIND PERCENT 22.6 22.1 16.1 20.7 22.6 28.7 38.1 29.0 22.7 23.9 14.0 16.1 20.0 CALMS PERCENT OF WIND 24.5 18.6 29.7 26.0 20.6 16.7 15.5 19.4 21.3 29.7 46.0 49.7 26.5 NO. OF WIND OBSERVATION 155 140 155 150 155 150 155 155 150 155 150 155 1825 VECTOR WIND DIRECTION (MEAN) 220 227 206 222 269 306 29 12 327 291 33 222 279 VECTOR WIND MAGNITUDE(KNOTS) 1.5 3.0 3.5 3.6 2.2 2.9 4.3 4.0 1.9 1.8 0.2 1.0 1.0 WIND STEADINESES (MEAN %) 22.1 34.1 47.3 42.9 28.9 38.2 58.1 55.6 26.8 29.0 4.9 24.4 14.5 WIND SPEED (MEAN KNOTS) 6.8 8.8 7.4 8.4 7.6 7.6 7.4 7.2 7.1 6.2 4.1 4.1 6.9 FASTEST WIND DIRECTION 190 240 210 200 260 300 260 30 230 250 210 190 210 FASTEST WIND SPEED (KNOTS) 29 29 33 31 29 23 19 19 19 23 23 23 33 DAY 16 22 25 10 19 12 6 2 2 2 5 1 DAYS WITH SKY CLEAR (0-2)/8 17 24 11 14 12 20 25 31 30 19 10 17 230 DAYS WITH P.CLOUDY (3-6)/8 9 3 15 13 16 9 6 0 0 10 12 9 102 DAYS WITH CLOUDY (7-8)/8 5 1 5 3 3 1 0 0 0 2 8 5 33 DAYS WITH VISIBILITY =< 2 KM 0 0 1 0 0 0 0 0 0 0 0 1 2 DURATION OF SUNSHINE HOURS 217.0 273.3 227.4 269.3 295.4 299.4 337.3 372.2 327.2 257.0 180.0 205.0 3260.5 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION NAEIN (40801) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 32 51 N LONGITUDE 53 5 E DATA PROCESSING CENTER ELEVATION 1549.0 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 842.3 842.2 838.9 840.6 842.7 839.6 835.7 839.4 843.0 845.5 845.8 843.7 841.6 MAX. QFE PRESSURE IN HPA 849.6 849.7 851.7 846.6 849.3 848.9 839.7 843.4 848.7 850.9 855.0 851.3 855.0 DAY-HOUR 19- 6 17- 6 11- 6 13- 6 12- 6 18- 6 9- 6 25- 6 19- 6 9- 6 8- 6 28- 6 MIN. QFE PRESSURE IN HPA 832.2 835.8 829.0 832.9 835.3 833.5 830.5 833.4 837.2 840.7 840.8 834.4 829.0 DAY-HOUR 17-12 27-12 25-12 10-12 4-15 30-15 16-15 5-15 2-15 23-12 19-12 10-12 MEAN QNH PRESSURE IN HPA 1015.1 1015.0 1011.1 1013.1 1015.6 1012.0 1007.4 1011.7 1015.9 1018.8 1019.2 1016.7 1014.3 MAX. QNH PRESSURE IN HPA 1023.6 1023.7 1026.0 1020.1 1023.2 1022.8 1012.1 1016.4 1022.5 1025.1 1029.9 1025.5 1029.9 DAY-HOUR 19- 6 17- 6 11- 6 13- 6 12- 6 18- 6 9- 6 25- 6 19- 6 9- 6 8- 6 28- 6 MIN. QNH PRESSURE IN HPA 1003.3 1007.5 999.6 1004.1 1006.9 1004.8 1001.4 1004.7 1009.1 1013.2 1013.3 1005.9 999.6 DAY-HOUR 17-12 27-12 25-12 10-12 4-15 30-15 16-15 5-15 2-15 23-12 19-12 10-12 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY-HOUR **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY-HOUR **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** PRESSURE AT HOUR 0000 UTC. MEAN QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** PRESSURE AT HOUR 0300 UTC. MEAN QFE PRESSURE IN HPA 842.6 842.1 839.2 841.1 843.4 840.3 836.3 839.9 843.6 845.9 845.9 843.8 842.0 MAX. QFE PRESSURE IN HPA 847.9 848.6 849.2 845.8 848.1 848.1 839.2 842.6 847.6 849.7 854.0 850.0 854.0 DAY 24 17 11 14 12 18 9 29 19 9 8 28 MIN. QFE PRESSURE IN HPA 833.7 837.2 832.6 834.6 836.1 835.8 832.0 836.0 839.2 842.7 842.4 837.2 832.0 DAY 16 27 25 10 5 30 16 6 3 23 20 10 MEAN QNH PRESSURE IN HPA 1015.4 1014.8 1011.5 1013.7 1016.4 1012.8 1008.1 1012.3 1016.6 1019.3 1019.3 1016.9 1014.8 MAX. QNH PRESSURE IN HPA 1021.6 1022.4 1023.1 1019.2 1021.8 1021.8 1011.5 1015.4 1021.2 1023.7 1028.7 1024.0 1028.7 DAY 24 17 11 14 12 18 9 29 19 9 8 28 MIN. QNH PRESSURE IN HPA 1005.1 1009.1 1003.8 1006.1 1007.9 1007.5 1003.1 1007.7 1011.5 1015.5 1015.2 1009.1 1003.1 DAY 16 27 25 10 5 30 16 6 3 23 20 10 MEAN QFF PRESSURE IN HPA 1015.8 1015.5 1009.7 1007.3 1006.3 999.2 991.6 997.9 1005.2 1010.9 1016.9 1017.4 1007.8 MAX. QFF PRESSURE IN HPA 1025.4 1027.1 1023.9 1017.4 1015.7 1006.6 995.6 1003.7 1010.9 1015.3 1026.9 1029.6 1029.6 DAY 19 8 11 13 7 18 9 29 19 9 8 28 MIN. QFF PRESSURE IN HPA 1000.8 1004.4 998.3 997.9 996.0 994.0 986.3 992.3 997.6 1005.2 1011.5 1006.0 986.3 DAY 16 22 25 10 5 30 16 6 3 7 12 10 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION NAEIN (40801) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 32 51 N LONGITUDE 53 5 E DATA PROCESSING CENTER ELEVATION 1549.0 M MEANS AND EXTREMES FOR THE YEAR 1997 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 0600 UTC. MEAN QFE PRESSURE IN HPA 843.6 843.5 840.2 841.8 844.1 840.8 836.9 840.6 844.5 846.8 847.0 845.0 842.9 MAX. QFE PRESSURE IN HPA 849.6 849.7 851.7 846.6 849.3 848.9 839.7 843.4 848.7 850.9 855.0 851.3 855.0 DAY 19 17 11 13 12 18 9 25 19 9 8 28 MIN. QFE PRESSURE IN HPA 834.2 838.3 832.1 834.9 837.9 836.3 833.2 836.5 840.5 843.5 843.3 838.0 832.1 DAY 16 27 25 11 5 30 16 5 3 23 20 10 MEAN QNH PRESSURE IN HPA 1016.6 1016.5 1012.7 1014.5 1017.1 1013.4 1008.8 1013.2 1017.6 1020.3 1020.6 1018.2 1015.8 MAX. QNH PRESSURE IN HPA 1023.6 1023.7 1026.0 1020.1 1023.2 1022.8 1012.1 1016.4 1022.5 1025.1 1029.9 1025.5 1029.9 DAY 19 17 11 13 12 18 9 25 19 9 8 28 MIN. QNH PRESSURE IN HPA 1005.7 1010.4 1003.2 1006.5 1010.0 1008.1 1004.5 1008.3 1013.0 1016.5 1016.2 1010.1 1003.2 DAY 16 27 25 11 5 30 16 5 3 23 20 10 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** PRESSURE AT HOUR 0900 UTC. MEAN QFE PRESSURE IN HPA 842.4 842.7 839.4 840.9 843.1 839.9 836.3 839.9 843.5 845.7 845.9 843.7 841.9 MAX. QFE PRESSURE IN HPA 848.9 848.9 850.7 845.9 848.1 847.9 839.4 843.2 847.6 850.5 853.8 850.8 853.8 DAY 19 17 11 13 12 18 28 28 19 8 8 28 MIN. QFE PRESSURE IN HPA 832.5 836.9 830.4 833.9 837.6 835.4 831.9 835.4 839.5 842.3 842.3 835.7 830.4 DAY 16 27 29 11 5 30 16 5 2 23 19 10 MEAN QNH PRESSURE IN HPA 1015.2 1015.5 1011.7 1013.5 1016.0 1012.3 1008.1 1012.2 1016.5 1019.0 1019.2 1016.7 1014.7 MAX. QNH PRESSURE IN HPA 1022.8 1022.8 1024.9 1019.3 1021.8 1021.6 1011.7 1016.1 1021.2 1024.6 1028.5 1025.0 1028.5 DAY 19 17 11 13 12 18 28 28 19 8 8 28 MIN. QNH PRESSURE IN HPA 1003.7 1008.8 1001.2 1005.3 1009.6 1007.1 1003.0 1007.1 1011.8 1015.1 1015.1 1007.4 1001.2 DAY 16 27 29 11 5 30 16 5 2 23 19 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 841.1 841.2 837.7 839.5 841.6 838.6 834.9 838.5 841.8 844.2 844.8 842.6 840.5 MAX. QFE PRESSURE IN HPA 847.2 846.8 848.5 845.1 845.9 846.9 837.9 841.7 845.9 848.4 852.7 849.4 852.7 DAY 19 7 11 13 12 18 28 28 19 8 8 28 MIN. QFE PRESSURE IN HPA 832.2 835.8 829.0 832.9 835.5 833.8 830.6 833.7 837.5 840.7 840.8 834.4 829.0 DAY 17 27 25 10 5 30 16 5 2 23 19 10 MEAN QNH PRESSURE IN HPA 1013.7 1013.8 1009.7 1011.8 1014.3 1010.8 1006.4 1010.6 1014.5 1017.3 1018.0 1015.5 1013.0 MAX. QNH PRESSURE IN HPA 1020.8 1020.3 1022.3 1018.3 1019.3 1020.4 1010.0 1014.4 1019.3 1022.2 1027.2 1023.3 1027.2 DAY 19 7 11 13 12 18 28 28 19 8 8 28 MIN. QNH PRESSURE IN HPA 1003.3 1007.5 999.6 1004.1 1007.2 1005.2 1001.5 1005.1 1009.5 1013.2 1013.3 1005.9 999.6 DAY 17 27 25 10 5 30 16 5 2 23 19 10 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION NAEIN (40801) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 32 51 N LONGITUDE 53 5 E DATA PROCESSING CENTER ELEVATION 1549.0 M MEANS AND EXTREMES FOR THE YEAR 1997 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 1500 UTC. MEAN QFE PRESSURE IN HPA 841.8 841.8 838.1 839.6 841.6 838.5 834.4 838.4 841.9 844.7 845.6 843.5 840.8 MAX. QFE PRESSURE IN HPA 847.5 847.8 849.5 845.7 845.2 846.6 837.5 841.7 845.5 849.1 853.3 850.0 853.3 DAY 19 7 11 13 16 18 28 28 19 8 7 28 MIN. QFE PRESSURE IN HPA 833.4 836.6 830.0 833.6 835.3 833.5 830.5 833.4 837.2 842.0 841.9 836.5 830.0 DAY 17 22 25 10 4 30 16 5 2 23 19 10 MEAN QNH PRESSURE IN HPA 1014.5 1014.5 1010.2 1012.0 1014.2 1010.6 1005.8 1010.5 1014.6 1017.9 1018.9 1016.4 1013.3 MAX. QNH PRESSURE IN HPA 1021.1 1021.5 1023.5 1019.0 1018.5 1020.1 1009.5 1014.4 1018.8 1023.0 1027.9 1024.0 1027.9 DAY 19 7 11 13 16 18 28 28 19 8 7 28 MIN. QNH PRESSURE IN HPA 1004.7 1008.4 1000.8 1005.0 1006.9 1004.8 1001.4 1004.7 1009.1 1014.7 1014.6 1008.3 1000.8 DAY 17 22 25 10 4 30 16 5 2 23 19 10 MEAN QFF PRESSURE IN HPA 1014.8 1015.1 1008.2 1005.4 1004.0 997.0 989.1 996.1 1003.1 1009.5 1016.6 1016.9 1006.3 MAX. QFF PRESSURE IN HPA 1024.2 1027.6 1024.2 1016.6 1012.1 1005.5 993.3 1002.2 1009.4 1014.5 1025.8 1028.8 1028.8 DAY 19 7 11 13 6 18 8 28 15 8 7 28 MIN. QFF PRESSURE IN HPA 1002.3 1001.2 995.5 997.9 995.8 990.7 984.4 989.5 995.3 1003.2 1011.3 1004.2 984.4 DAY 16 22 29 10 4 30 16 5 2 6 12 9 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 NAEIN (40801) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 32 51 N LONGITUDE 53 5 E DATA PROCESSING CENTER ELEVATION 1549.0 M MEANS AND EXTREMES FOR THE YEAR 1998 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AIR TEMPERATURE (C) 4.8 6.5 12.2 19.8 23.6 29.1 31.6 30.5 27.0 19.9 15.9 12.1 19.4 MINIMUN AIR TEMPERATURE (C) -1.9 -0.3 4.9 10.4 14.1 18.0 22.0 20.6 16.5 9.7 5.8 3.7 10.3 DAYS WITH MINIMUM TEMP. >=21 0 0 0 0 0 0 20 13 0 0 0 0 33 DAYS WITH MINIMUM TEMP. <=-4 10 4 1 0 0 0 0 0 0 0 0 0 15 DAYS WITH FREEZING MIN.<= 0 21 19 7 0 0 0 0 0 0 0 0 2 49 TEMPERATURE RECORDS LOWEST(C) -6.6 -6.6 -5.0 3.4 5.8 15.4 17.5 17.4 12.4 5.8 2.0 -2.4 -6.6 DAY 14 17 3 8 3 1 26 8 17 23 25 23 MAXIMUM AIR TEMPERATURE (C) 9.2 10.6 16.9 24.8 28.4 33.5 36.1 35.3 31.9 24.9 21.1 17.7 24.2 DAYS WITH MAXIMUM TEMP. >=30 0 0 0 2 13 30 29 31 23 7 0 0 135 DAYS WITH MAXIMUM TEMP. <= 0 0 0 0 0 0 0 0 0 0 0 0 0 0 TEMPERATURE RECORDS HIGHEST(C) 14.8 20.2 25.8 30.5 33.0 36.6 41.5 38.8 36.8 32.2 24.0 24.0 41.5 DAY 26 8 28 15 11 29 11 17 5 1 8 17 DIF. BETWEEN (MAX.-MIN.) (C) 11.1 10.9 12.0 14.4 14.3 15.5 14.1 14.7 15.4 15.2 15.3 14.0 13.9 MEAN DAILY TEMP. (MDT) (C) 3.7 5.2 10.9 17.6 21.2 25.8 29.0 27.9 24.2 17.3 13.5 10.7 17.2 COOLING DEG. DAYS(BASE 21 0C) 0.0 0.0 0.0 6.6 46.3 142.6 249.3 214.7 97.1 11.9 0.0 0.0 768.6 HEATING DEG. DAYS(BASE 18 0C) 443.9 359.1 221.0 55.6 21.1 0.0 0.0 0.0 0.0 58.0 135.7 226.0 1520.4 DEWPOINT (MEAN C) -5.3 -5.0 -5.0 -5.9 -1.3 -3.5 3.1 3.4 -0.4 -5.0 -7.9 -9.1 -3.5 MIXING RATIO (G/KG) 3.16 3.29 3.52 3.17 4.34 3.68 5.90 6.04 4.61 3.35 2.63 2.69 3.87 VAPOUR PRESSURE (HPA) 4.25 4.43 4.73 4.26 5.83 4.94 7.87 8.09 6.19 4.53 3.56 3.65 5.19 SATURATION DEF. (HPA) 4.69 5.86 10.57 20.19 24.76 36.49 40.33 37.17 31.12 20.36 15.28 11.11 21.49 RELATIVE HUMIDITY (MEAN %) 52 49 38 21 24 13 18 20 19 22 21 29 27 RELATIVE HUMIDITY (MAX. %) 73 70 59 38 42 23 29 31 30 37 35 42 42 RELATIVE HUMIDITY (MIN. %) 36 35 25 11 14 9 13 14 13 14 14 18 18 RELATIVE HUMIDITY (MEAN% 03UTC) 70 68 57 37 41 23 29 31 30 37 34 39 41 RELATIVE HUMIDITY (MEAN% 09UTC) 42 42 30 16 17 11 15 16 15 17 15 22 22 RELATIVE HUMIDITY (MEAN% 15UTC) 55 44 34 16 19 10 15 17 15 20 22 33 25 RH=0 => RELATIVE HUMIDITY < 0.5% AMOUNT OF PRECIPITATION MM. 19.8 37.7 21.5 3.0 17.0 0.0 1.1 1.7 0.1 0.9 0.0 5.0 107.8 DAYS WITH PRECIPITATION >=10 0 2 0 0 0 0 0 0 0 0 0 0 2 DAYS WITH PRECIPITATION >= 5 2 3 2 0 2 0 0 0 0 0 0 0 9 DAYS WITH PRECIPITATION >= 1 4 3 6 2 4 0 0 1 0 0 0 3 23 DAYS WITH PRECIPITATION 5 5 7 2 4 0 2 2 1 1 0 3 32 GREATEST DAILY PRECIPITATION 9.0 18.0 7.0 2.0 6.0 0.0 0.6 1.0 0.1 0.9 0.0 2.0 18.0 DAY 5 12 9 6 3 ** 17 4 14 11 ** 3 DAY WITH THUNDER STORM 0 0 0 0 1 0 0 0 0 0 0 0 1 DAYS WITH SNOW OR SLEET 0 2 2 0 0 0 0 0 0 0 0 0 4 DAYS WITH DUST 0 2 1 2 2 0 0 0 0 0 0 0 7 WIND DIRECTION (PREVAILING) 90 270 225 270 270 45 45 45 45 270 270 45 270 PREVAILING WIND SPEED(KNOTS) 6.4 7.6 14.7 9.3 9.2 9.7 9.0 9.4 8.8 8.1 9.4 7.5 8.7 PREVAILING WIND PERCENT 13.5 12.9 15.5 20.7 16.1 23.3 18.7 20.6 16.7 21.9 18.7 15.5 15.8 CALMS PERCENT OF WIND 40.6 37.9 32.9 26.0 21.3 18.0 27.7 23.2 37.3 33.5 36.0 49.7 32.0 NO. OF WIND OBSERVATION 155 140 155 150 155 150 155 155 150 155 150 155 1825 VECTOR WIND DIRECTION (MEAN) 205 242 222 241 271 33 4 7 31 360 239 136 313 VECTOR WIND MAGNITUDE(KNOTS) 0.9 1.5 3.4 3.4 1.8 3.5 2.9 3.7 1.4 1.5 1.0 0.6 0.7 WIND STEADINESES (MEAN %) 16.4 24.2 48.6 42.5 23.7 49.3 43.3 53.6 24.6 27.3 16.1 14.0 10.9 WIND SPEED (MEAN KNOTS) 5.5 6.2 7.0 8.0 7.6 7.1 6.7 6.9 5.7 5.5 6.2 4.3 6.4 FASTEST WIND DIRECTION 270 240 180 260 220 270 200 320 180 220 130 190 240 FASTEST WIND SPEED (KNOTS) 23 29 29 29 29 19 27 27 23 19 23 29 29 DAY 13 8 18 24 29 4 17 2 5 7 14 24 DAYS WITH SKY CLEAR (0-2)/8 20 13 13 16 20 26 24 24 27 28 22 14 247 DAYS WITH P.CLOUDY (3-6)/8 8 10 8 13 10 4 7 7 3 3 8 14 95 DAYS WITH CLOUDY (7-8)/8 3 5 10 1 1 0 0 0 0 0 0 3 23 DAYS WITH VISIBILITY =< 2 KM 1 2 1 0 0 0 0 0 0 0 0 0 4 DURATION OF SUNSHINE HOURS 248.8 189.6 230.7 292.0 318.2 358.9 345.5 337.0 306.2 307.0 255.4 210.9 3400.2 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION NAEIN (40801) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 32 51 N LONGITUDE 53 5 E DATA PROCESSING CENTER ELEVATION 1549.0 M MEANS AND EXTREMES FOR THE YEAR 1998 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL MEAN QFE PRESSURE IN HPA 841.1 841.8 841.1 841.9 842.4 841.5 837.9 841.0 842.1 845.8 846.8 847.3 842.6 MAX. QFE PRESSURE IN HPA 849.4 853.9 848.8 851.9 849.9 847.2 845.5 845.7 847.2 851.9 853.2 853.8 853.9 DAY-HOUR 4- 6 23- 6 28- 6 12- 6 8- 6 6- 6 20- 6 25- 6 13- 6 10- 6 21- 6 9- 6 MIN. QFE PRESSURE IN HPA 828.1 830.8 832.2 833.7 833.7 835.9 829.6 835.1 836.1 838.8 841.5 839.9 828.1 DAY-HOUR 13- 9 15-12 15-12 21-15 30-12 29-15 8-15 22-15 4-15 1-12 1-12 21-12 MEAN QNH PRESSURE IN HPA 1013.7 1014.5 1013.7 1014.6 1015.2 1014.2 1010.0 1013.6 1014.8 1019.1 1020.3 1020.9 1015.4 MAX. QNH PRESSURE IN HPA 1023.3 1028.6 1022.6 1026.2 1023.9 1020.8 1018.8 1019.0 1020.8 1026.2 1027.8 1028.5 1028.6 DAY-HOUR 4- 6 23- 6 28- 6 12- 6 8- 6 6- 6 20- 6 25- 6 13- 6 10- 6 21- 6 9- 6 MIN. QNH PRESSURE IN HPA 998.6 1001.7 1003.3 1005.1 1005.1 1007.6 1000.3 1006.7 1007.9 1011.0 1014.2 1012.3 998.6 DAY-HOUR 13- 9 15-12 15-12 21-15 30-12 29-15 8-15 22-15 4-15 1-12 1-12 21-12 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY-HOUR **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY-HOUR **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** PRESSURE AT HOUR 0000 UTC. MEAN QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** PRESSURE AT HOUR 0300 UTC. MEAN QFE PRESSURE IN HPA 841.2 842.1 841.4 842.3 843.1 842.3 838.7 841.7 842.8 846.2 847.0 847.5 843.0 MAX. QFE PRESSURE IN HPA 847.7 852.4 847.2 851.2 848.8 846.5 844.5 844.7 846.8 851.3 851.9 853.2 853.2 DAY 4 23 28 12 8 6 20 25 13 10 21 10 MIN. QFE PRESSURE IN HPA 829.0 831.7 833.8 835.6 836.1 839.1 831.9 837.2 838.0 841.2 843.4 841.6 829.0 DAY 13 16 15 24 30 29 8 22 5 1 11 21 MEAN QNH PRESSURE IN HPA 1013.8 1014.8 1014.0 1015.1 1016.0 1015.1 1010.9 1014.4 1015.7 1019.6 1020.6 1021.1 1015.9 MAX. QNH PRESSURE IN HPA 1021.4 1026.8 1020.8 1025.4 1022.6 1020.0 1017.6 1017.9 1020.3 1025.5 1026.2 1027.8 1027.8 DAY 4 23 28 12 8 6 20 25 13 10 21 10 MIN. QNH PRESSURE IN HPA 999.6 1002.7 1005.2 1007.3 1007.9 1011.4 1003.0 1009.1 1010.1 1013.8 1016.4 1014.3 999.6 DAY 13 16 15 24 30 29 8 22 5 1 11 21 MEAN QFF PRESSURE IN HPA 1015.4 1015.0 1010.8 1007.3 1005.6 1001.7 995.6 1000.1 1003.9 1012.4 1016.2 1018.8 1008.6 MAX. QFF PRESSURE IN HPA 1024.9 1030.6 1019.1 1019.6 1018.0 1007.3 1004.9 1005.2 1010.7 1020.2 1023.1 1025.6 1030.6 DAY 4 23 4 7 3 17 21 8 13 10 25 9 MIN. QFF PRESSURE IN HPA 1000.5 998.8 997.6 997.1 995.2 996.1 985.6 993.0 996.4 1002.4 1011.0 1011.1 985.6 DAY 13 8 30 24 30 29 8 22 5 1 11 24 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION NAEIN (40801) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 32 51 N LONGITUDE 53 5 E DATA PROCESSING CENTER ELEVATION 1549.0 M MEANS AND EXTREMES FOR THE YEAR 1998 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 0600 UTC. MEAN QFE PRESSURE IN HPA 842.3 843.1 842.5 843.2 843.7 842.7 839.1 842.3 843.5 847.0 848.1 848.6 843.8 MAX. QFE PRESSURE IN HPA 849.4 853.9 848.8 851.9 849.9 847.2 845.5 845.7 847.2 851.9 853.2 853.8 853.9 DAY 4 23 28 12 8 6 20 25 13 10 21 9 MIN. QFE PRESSURE IN HPA 828.4 833.2 834.1 836.1 836.1 839.2 832.3 837.8 838.6 841.5 844.7 842.3 828.4 DAY 13 16 15 24 30 29 8 22 5 1 11 21 MEAN QNH PRESSURE IN HPA 1015.0 1016.0 1015.3 1016.2 1016.7 1015.6 1011.3 1015.1 1016.4 1020.6 1021.8 1022.4 1016.9 MAX. QNH PRESSURE IN HPA 1023.3 1028.6 1022.6 1026.2 1023.9 1020.8 1018.8 1019.0 1020.8 1026.2 1027.8 1028.5 1028.6 DAY 4 23 28 12 8 6 20 25 13 10 21 9 MIN. QNH PRESSURE IN HPA 998.9 1004.5 1005.5 1007.9 1007.9 1011.5 1003.4 1009.8 1010.8 1014.2 1017.9 1015.1 998.9 DAY 13 16 15 24 30 29 8 22 5 1 11 21 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** PRESSURE AT HOUR 0900 UTC. MEAN QFE PRESSURE IN HPA 841.3 842.1 841.5 842.3 842.9 842.0 838.3 841.4 842.5 846.1 846.9 847.3 842.9 MAX. QFE PRESSURE IN HPA 848.2 853.0 847.8 851.6 849.0 846.2 844.7 844.8 845.8 850.7 852.1 853.3 853.3 DAY 4 23 26 12 8 6 20 25 12 10 21 29 MIN. QFE PRESSURE IN HPA 828.1 832.5 834.0 835.0 834.9 838.3 831.8 836.7 837.6 840.8 843.2 840.9 828.1 DAY 13 15 15 24 30 29 8 22 5 1 1 21 MEAN QNH PRESSURE IN HPA 1013.9 1014.8 1014.2 1015.1 1015.7 1014.7 1010.5 1014.0 1015.3 1019.5 1020.4 1020.9 1015.8 MAX. QNH PRESSURE IN HPA 1021.9 1027.5 1021.5 1025.9 1022.9 1019.6 1017.9 1018.0 1019.2 1024.9 1026.5 1027.9 1027.9 DAY 4 23 26 12 8 6 20 25 12 10 21 29 MIN. QNH PRESSURE IN HPA 998.6 1003.7 1005.4 1006.6 1006.5 1010.4 1002.9 1008.6 1009.6 1013.3 1016.1 1013.5 998.6 DAY 13 15 15 24 30 29 8 22 5 1 1 21 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** PRESSURE AT HOUR 1200 UTC. MEAN QFE PRESSURE IN HPA 840.1 840.7 839.9 840.7 841.4 840.5 837.0 840.0 840.9 844.6 845.6 846.2 841.5 MAX. QFE PRESSURE IN HPA 847.4 850.9 846.4 850.0 847.6 844.7 843.2 843.3 844.3 849.2 850.8 852.4 852.4 DAY 4 23 26 12 8 6 20 29 12 14 21 29 MIN. QFE PRESSURE IN HPA 829.1 830.8 832.2 834.1 833.7 836.9 830.3 835.5 836.4 838.8 841.5 839.9 829.1 DAY 13 15 15 23 30 29 8 22 4 1 1 21 MEAN QNH PRESSURE IN HPA 1012.5 1013.2 1012.3 1013.2 1014.0 1013.0 1008.9 1012.5 1013.4 1017.8 1019.0 1019.6 1014.1 MAX. QNH PRESSURE IN HPA 1021.0 1025.1 1019.9 1024.0 1021.2 1017.9 1016.1 1016.2 1017.4 1023.1 1025.0 1026.8 1026.8 DAY 4 23 26 12 8 6 20 29 12 14 21 29 MIN. QNH PRESSURE IN HPA 999.7 1001.7 1003.3 1005.5 1005.1 1008.8 1001.1 1007.2 1008.2 1011.0 1014.2 1012.3 999.7 DAY 13 15 15 23 30 29 8 22 4 1 1 21 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION NAEIN (40801) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 32 51 N LONGITUDE 53 5 E DATA PROCESSING CENTER ELEVATION 1549.0 M MEANS AND EXTREMES FOR THE YEAR 1998 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 1500 UTC. MEAN QFE PRESSURE IN HPA 840.9 841.3 840.3 840.8 841.1 840.1 836.6 839.8 841.0 845.1 846.2 847.0 841.7 MAX. QFE PRESSURE IN HPA 847.8 850.9 846.4 849.0 847.5 844.3 843.2 842.7 844.5 849.6 851.5 853.5 853.5 DAY 4 23 26 12 8 6 20 29 12 14 21 29 MIN. QFE PRESSURE IN HPA 831.1 831.1 833.0 833.7 834.7 835.9 829.6 835.1 836.1 839.3 841.5 840.5 829.6 DAY 13 15 1 21 29 29 8 22 4 3 1 31 MEAN QNH PRESSURE IN HPA 1013.4 1013.9 1012.7 1013.3 1013.7 1012.5 1008.4 1012.2 1013.5 1018.3 1019.6 1020.5 1014.3 MAX. QNH PRESSURE IN HPA 1021.5 1025.1 1019.9 1022.9 1021.1 1017.4 1016.1 1015.5 1017.6 1023.6 1025.8 1028.1 1028.1 DAY 4 23 26 12 8 6 20 29 12 14 21 29 MIN. QNH PRESSURE IN HPA 1002.0 1002.0 1004.3 1005.1 1006.2 1007.6 1000.3 1006.7 1007.9 1011.6 1014.2 1013.0 1000.3 DAY 13 15 1 21 29 29 8 22 4 3 1 31 MEAN QFF PRESSURE IN HPA 1015.1 1014.1 1009.3 1005.5 1003.4 999.1 993.2 997.9 1001.7 1011.1 1015.2 1018.1 1007.0 MAX. QFF PRESSURE IN HPA 1024.4 1028.2 1017.5 1016.6 1015.5 1004.8 1003.3 1002.0 1007.6 1018.3 1021.4 1026.8 1028.2 DAY 4 23 4 7 2 17 20 8 12 25 21 29 MIN. QFF PRESSURE IN HPA 1005.3 1000.0 999.6 994.0 992.6 992.4 982.6 991.1 994.1 1000.6 1008.2 1007.8 982.6 DAY 13 8 18 21 29 29 8 22 4 2 1 31 PRESSURE AT HOUR 1800 UTC. MEAN QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** PRESSURE AT HOUR 2100 UTC. MEAN QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION NAEIN (40801) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 32 51 N LONGITUDE 53 5 E DATA PROCESSING CENTER ELEVATION 1549.0 M MEANS AND EXTREMES FOR THE YEAR 1999 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AIR TEMPERATURE (C) 4.6 10.7 11.0 18.2 25.3 31.0 30.4 30.3 27.4 21.3 11.8 7.9 19.2 MINIMUN AIR TEMPERATURE (C) -1.5 2.9 4.2 9.7 14.7 20.0 21.1 19.3 16.8 11.4 4.4 -0.3 10.2 DAYS WITH MINIMUM TEMP. >=21 0 0 0 0 0 10 15 2 0 0 0 0 27 DAYS WITH MINIMUM TEMP. <=-4 5 0 0 0 0 0 0 0 0 0 1 2 8 DAYS WITH FREEZING MIN.<= 0 21 6 3 0 0 0 0 0 0 0 2 19 51 TEMPERATURE RECORDS LOWEST(C) -15.0 -2.0 -2.4 4.0 10.0 17.4 16.8 16.6 10.0 6.8 -5.2 -5.2 -15.0 DAY 4 23 19 12 23 7 29 28 29 27 30 1 MAXIMUM AIR TEMPERATURE (C) 8.5 15.5 14.9 23.1 29.8 35.7 34.9 34.8 32.3 26.2 16.2 12.8 23.7 DAYS WITH MAXIMUM TEMP. >=30 0 0 0 0 16 30 29 31 23 3 0 0 132 DAYS WITH MAXIMUM TEMP. <= 0 1 0 0 0 0 0 0 0 0 0 0 0 1 TEMPERATURE RECORDS HIGHEST(C) 16.0 21.6 22.2 27.5 35.0 39.6 40.5 37.0 36.6 30.2 22.6 17.8 40.5 DAY 9 8 31 8 31 29 4 30 1 5 19 29 DIF. BETWEEN (MAX.-MIN.) (C) 10.0 12.6 10.7 13.4 15.1 15.7 13.8 15.5 15.5 14.8 11.8 13.1 13.5 MEAN DAILY TEMP. (MDT) (C) 3.5 9.2 9.5 16.4 22.3 27.9 28.0 27.1 24.6 18.8 10.3 6.3 17.0 COOLING DEG. DAYS(BASE 21 0C) 0.0 0.0 0.0 0.0 55.6 206.4 218.5 188.3 114.1 3.6 0.0 0.0 786.7 HEATING DEG. DAYS(BASE 18 0C) 450.7 246.0 262.4 58.8 0.4 0.0 0.0 0.0 0.0 17.1 230.2 364.1 1629.7 DEWPOINT (MEAN C) -3.9 -6.4 -4.3 -2.0 -3.5 -4.0 3.1 -0.1 0.2 -2.2 -3.2 -7.3 -2.8 MIXING RATIO (G/KG) 3.57 3.06 3.61 4.31 3.64 3.58 5.99 4.58 4.76 3.93 3.77 2.77 3.96 VAPOUR PRESSURE (HPA) 4.81 4.11 4.84 5.80 4.89 4.80 7.98 6.14 6.38 5.30 5.08 3.76 5.33 SATURATION DEF. (HPA) 4.05 9.28 9.09 16.01 28.78 41.54 37.06 38.31 31.97 21.23 9.44 7.42 21.18 RELATIVE HUMIDITY (MEAN %) 58 34 42 30 16 12 20 15 19 22 39 37 29 RELATIVE HUMIDITY (MAX. %) 77 58 63 50 28 20 31 23 30 34 57 53 44 RELATIVE HUMIDITY (MIN. %) 44 21 30 18 11 8 14 11 14 15 28 26 20 RELATIVE HUMIDITY (MEAN% 03UTC) 73 56 61 48 28 20 31 23 29 34 56 50 42 RELATIVE HUMIDITY (MEAN% 09UTC) 50 24 34 25 13 9 18 12 15 17 31 27 23 RELATIVE HUMIDITY (MEAN% 15UTC) 57 31 38 27 12 9 15 12 16 22 40 41 27 RH=0 => RELATIVE HUMIDITY < 0.5% AMOUNT OF PRECIPITATION MM. 50.2 10.1 85.6 22.8 0.0 0.0 0.0 0.0 0.8 0.0 6.7 5.0 181.2 DAYS WITH PRECIPITATION >=10 2 1 3 1 0 0 0 0 0 0 0 0 7 DAYS WITH PRECIPITATION >= 5 3 1 6 2 0 0 0 0 0 0 1 0 13 DAYS WITH PRECIPITATION >= 1 7 1 6 4 0 0 0 0 0 0 1 1 20 DAYS WITH PRECIPITATION 10 1 8 5 0 0 1 0 1 1 2 3 32 GREATEST DAILY PRECIPITATION 17.0 10.1 35.1 11.0 0.0 0.0 0.0 0.0 0.8 0.0 6.0 4.2 35.1 DAY 25 6 2 10 ** ** ** ** 28 ** 9 12 DAY WITH THUNDER STORM 0 0 0 0 0 0 0 0 0 0 0 0 0 DAYS WITH SNOW OR SLEET 2 0 0 0 0 0 0 0 0 0 0 0 2 DAYS WITH DUST 0 1 0 1 4 1 0 0 0 0 0 0 7 WIND DIRECTION (PREVAILING) 90 225 270 270 270 270 45 360 90 45 45 45 270 PREVAILING WIND SPEED(KNOTS) 6.4 13.9 7.9 9.4 11.1 11.2 8.8 9.0 8.7 7.7 8.4 7.4 8.9 PREVAILING WIND PERCENT 11.0 20.0 15.5 16.7 18.7 24.0 24.5 21.9 16.7 23.9 18.0 15.5 16.4 CALMS PERCENT OF WIND 56.8 25.0 32.3 26.0 23.9 24.7 22.6 23.2 30.7 32.9 40.0 47.7 32.2 NO. OF WIND OBSERVATION 155 140 155 150 155 150 155 155 150 155 150 155 1825 VECTOR WIND DIRECTION (MEAN) 197 227 225 275 315 293 18 8 30 331 5 32 332 VECTOR WIND MAGNITUDE(KNOTS) 0.2 3.6 1.2 1.5 1.1 1.6 3.8 3.7 1.6 1.7 0.4 1.0 0.9 WIND STEADINESES (MEAN %) 5.6 46.8 18.2 19.7 14.5 20.3 56.7 57.8 27.1 30.4 7.7 26.3 14.5 WIND SPEED (MEAN KNOTS) 3.6 7.7 6.6 7.6 7.6 7.9 6.7 6.4 5.9 5.6 5.2 3.8 6.2 FASTEST WIND DIRECTION 170 230 200 180 230 240 80 360 20 220 190 180 230 FASTEST WIND SPEED (KNOTS) 27 35 29 29 33 27 19 19 19 23 23 19 35 DAY 9 19 26 8 14 5 13 3 2 31 27 14 DAYS WITH SKY CLEAR (0-2)/8 9 15 15 13 27 30 27 28 30 28 16 18 256 DAYS WITH P.CLOUDY (3-6)/8 14 11 7 15 4 0 4 3 0 3 12 10 83 DAYS WITH CLOUDY (7-8)/8 8 2 9 2 0 0 0 0 0 0 2 3 26 DAYS WITH VISIBILITY =< 2 KM 1 0 0 0 0 0 0 0 0 0 0 0 1 DURATION OF SUNSHINE HOURS 162.2 221.9 207.9 266.3 353.6 369.8 362.0 352.5 328.5 293.6 236.4 228.3 3383.0 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION NAEIN (40801) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 32 51 N LONGITUDE 53 5 E DATA PROCESSING CENTER ELEVATION 1549.0 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 844.1 842.1 840.8 842.0 841.3 838.7 837.3 840.4 841.0 845.1 844.8 847.7 842.1 MAX. QFE PRESSURE IN HPA 854.5 849.5 848.7 846.8 848.5 844.9 842.7 847.5 847.6 848.8 851.2 854.6 854.6 DAY-HOUR 2- 6 12- 6 31- 6 11- 6 28- 6 1- 6 19- 6 20- 6 30- 6 27- 6 14- 6 6- 6 MIN. QFE PRESSURE IN HPA 835.8 832.6 833.2 833.5 831.6 830.2 832.4 835.7 835.8 840.0 838.1 839.7 830.2 DAY-HOUR 18-12 6- 3 2-12 8-12 20-15 24-15 14-15 14-15 15-15 31-12 26-12 15-12 MEAN QNH PRESSURE IN HPA 1017.2 1014.9 1013.3 1014.7 1013.9 1010.8 1009.3 1012.9 1013.5 1018.3 1018.0 1021.3 1014.8 MAX. QNH PRESSURE IN HPA 1029.3 1023.5 1022.5 1020.3 1022.3 1018.1 1015.5 1021.1 1021.2 1022.6 1025.4 1029.4 1029.4 DAY-HOUR 2- 6 12- 6 31- 6 11- 6 28- 6 1- 6 19- 6 20- 6 30- 6 27- 6 14- 6 6- 6 MIN. QNH PRESSURE IN HPA 1007.5 1003.8 1004.5 1004.8 1002.6 1001.0 1003.6 1007.4 1007.5 1012.4 1010.2 1012.1 1001.0 DAY-HOUR 18-12 6- 3 2-12 8-12 20-15 24-15 14-15 14-15 15-15 31-12 26-12 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 844.2 842.3 840.9 842.5 842.1 839.5 838.0 841.0 841.6 845.5 845.0 847.8 842.5 MAX. QFE PRESSURE IN HPA 852.0 848.0 847.5 845.5 847.6 844.3 842.3 846.6 846.6 848.2 849.6 853.6 853.6 DAY 2 12 31 11 28 1 19 20 30 16 14 6 MIN. QFE PRESSURE IN HPA 837.5 832.6 835.6 837.5 836.8 831.1 835.3 837.4 836.5 842.1 840.4 840.8 831.1 DAY 18 6 3 8 20 25 23 14 16 31 1 16 MEAN QNH PRESSURE IN HPA 1017.3 1015.1 1013.5 1015.3 1014.8 1011.8 1010.1 1013.5 1014.2 1018.8 1018.2 1021.5 1015.3 MAX. QNH PRESSURE IN HPA 1026.4 1021.7 1021.1 1018.8 1021.2 1017.4 1015.1 1020.1 1020.1 1021.9 1023.6 1028.2 1028.2 DAY 2 12 31 11 28 1 19 20 30 16 14 6 MIN. QNH PRESSURE IN HPA 1009.5 1003.8 1007.3 1009.5 1008.7 1002.0 1006.9 1009.4 1008.3 1014.9 1012.9 1013.3 1002.0 DAY 18 6 3 8 20 25 23 14 16 31 1 16 MEAN QFF PRESSURE IN HPA 1018.6 1013.0 1010.7 1008.5 1003.7 997.3 995.3 999.8 1002.1 1010.8 1015.5 1021.8 1008.1 MAX. QFF PRESSURE IN HPA 1032.5 1021.6 1021.9 1016.9 1009.0 1003.3 1001.1 1006.9 1012.7 1018.7 1026.9 1031.5 1032.5 DAY 3 12 19 11 12 1 29 20 29 27 30 6 MIN. QFF PRESSURE IN HPA 1008.0 999.6 1002.5 1001.8 995.4 986.7 989.6 995.5 993.9 1007.2 1004.5 1009.8 986.7 DAY 18 21 22 14 20 25 5 14 16 31 1 16 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION NAEIN (40801) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 32 51 N LONGITUDE 53 5 E DATA PROCESSING CENTER ELEVATION 1549.0 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 845.2 843.5 842.0 843.3 842.6 840.0 838.5 841.6 842.3 846.5 846.0 848.8 843.3 MAX. QFE PRESSURE IN HPA 854.5 849.5 848.7 846.8 848.5 844.9 842.7 847.5 847.6 848.8 851.2 854.6 854.6 DAY 2 12 31 11 28 1 19 20 30 27 14 6 MIN. QFE PRESSURE IN HPA 838.2 835.1 836.1 837.6 836.4 831.6 835.9 838.1 837.7 842.7 840.4 842.8 831.6 DAY 18 6 2 8 20 25 23 7 16 31 26 14 MEAN QNH PRESSURE IN HPA 1018.4 1016.5 1014.7 1016.2 1015.4 1012.4 1010.6 1014.3 1015.1 1019.9 1019.4 1022.6 1016.3 MAX. QNH PRESSURE IN HPA 1029.3 1023.5 1022.5 1020.3 1022.3 1018.1 1015.5 1021.1 1021.2 1022.6 1025.4 1029.4 1029.4 DAY 2 12 31 11 28 1 19 20 30 27 14 6 MIN. QNH PRESSURE IN HPA 1010.3 1006.7 1007.9 1009.6 1008.2 1002.6 1007.6 1010.2 1009.7 1015.5 1012.9 1015.7 1002.6 DAY 18 6 2 8 20 25 23 7 16 31 26 14 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** PRESSURE AT HOUR 0900 UTC. MEAN QFE PRESSURE IN HPA 844.4 842.5 841.3 842.4 841.7 839.2 837.9 840.9 841.3 845.2 844.9 847.6 842.5 MAX. QFE PRESSURE IN HPA 854.2 848.3 847.8 846.3 847.3 844.4 842.2 846.2 847.1 847.2 849.8 853.1 854.2 DAY 2 12 31 11 28 1 19 20 30 1 14 6 MIN. QFE PRESSURE IN HPA 836.6 836.0 834.7 835.8 835.3 831.4 834.6 837.6 837.1 841.1 838.8 841.2 831.4 DAY 18 6 2 8 20 25 14 14 16 31 26 15 MEAN QNH PRESSURE IN HPA 1017.6 1015.3 1013.9 1015.2 1014.4 1011.5 1009.9 1013.5 1014.0 1018.5 1018.1 1021.3 1015.3 MAX. QNH PRESSURE IN HPA 1028.9 1022.1 1021.5 1019.7 1020.9 1017.5 1015.0 1019.6 1020.7 1020.8 1023.8 1027.6 1028.9 DAY 2 12 31 11 28 1 19 20 30 1 14 6 MIN. QNH PRESSURE IN HPA 1008.4 1007.7 1006.2 1007.5 1006.9 1002.4 1006.1 1009.6 1009.0 1013.7 1011.0 1013.8 1002.4 DAY 18 6 2 8 20 25 14 14 16 31 26 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 843.2 840.8 839.7 840.9 840.2 837.6 836.3 839.5 839.8 843.8 843.7 846.7 841.0 MAX. QFE PRESSURE IN HPA 852.7 846.8 845.7 845.2 845.4 842.6 840.1 844.5 846.2 846.0 848.9 852.0 852.7 DAY 2 12 31 22 28 1 28 19 30 2 14 6 MIN. QFE PRESSURE IN HPA 835.8 833.5 833.2 833.5 832.8 830.6 832.9 836.1 835.8 840.0 838.1 839.7 830.6 DAY 18 20 2 8 20 25 14 14 16 31 26 15 MEAN QNH PRESSURE IN HPA 1016.1 1013.3 1012.1 1013.4 1012.6 1009.7 1008.1 1011.8 1012.2 1016.9 1016.8 1020.3 1013.6 MAX. QNH PRESSURE IN HPA 1027.2 1020.3 1019.0 1018.5 1018.7 1015.4 1012.5 1017.6 1019.6 1019.4 1022.8 1026.4 1027.2 DAY 2 12 31 22 28 1 28 19 30 2 14 6 MIN. QNH PRESSURE IN HPA 1007.5 1004.8 1004.5 1004.8 1004.0 1001.5 1004.1 1007.9 1007.5 1012.4 1010.2 1012.1 1001.5 DAY 18 20 2 8 20 25 14 14 16 31 26 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 NAEIN (40801) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 32 51 N LONGITUDE 53 5 E DATA PROCESSING CENTER ELEVATION 1549.0 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 843.8 841.5 840.0 840.8 839.8 837.0 835.9 839.3 839.9 844.3 844.5 847.4 841.2 MAX. QFE PRESSURE IN HPA 852.8 847.2 845.4 846.2 845.1 841.8 839.5 844.0 846.5 846.9 849.8 852.2 852.8 DAY 2 12 30 22 28 1 28 19 30 27 30 6 MIN. QFE PRESSURE IN HPA 836.6 834.8 834.4 834.1 831.6 830.2 832.4 835.7 835.8 840.6 839.0 839.7 830.2 DAY 18 20 2 8 20 24 14 14 15 31 26 15 MEAN QNH PRESSURE IN HPA 1016.8 1014.1 1012.5 1013.4 1012.2 1009.0 1007.6 1011.6 1012.3 1017.4 1017.6 1021.0 1013.8 MAX. QNH PRESSURE IN HPA 1027.3 1020.8 1018.7 1019.6 1018.3 1014.5 1011.8 1017.1 1020.0 1020.4 1023.8 1026.6 1027.3 DAY 2 12 30 22 28 1 28 19 30 27 30 6 MIN. QNH PRESSURE IN HPA 1008.4 1006.4 1005.9 1005.5 1002.6 1001.0 1003.6 1007.4 1007.5 1013.1 1011.2 1012.1 1001.0 DAY 18 20 2 8 20 24 14 14 15 31 26 15 MEAN QFF PRESSURE IN HPA 1018.2 1012.0 1009.6 1006.4 1001.0 994.4 992.9 997.8 1000.2 1009.3 1015.1 1021.2 1006.5 MAX. QFF PRESSURE IN HPA 1032.4 1020.6 1018.2 1015.0 1006.3 1000.2 999.3 1003.7 1010.9 1016.8 1028.3 1029.5 1032.4 DAY 2 12 19 22 23 1 28 20 30 27 30 6 MIN. QFF PRESSURE IN HPA 1008.0 1000.9 1000.6 997.5 989.2 986.2 988.6 993.3 993.3 1004.8 1005.0 1009.5 986.2 DAY 18 20 21 14 20 25 5 14 16 31 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 NAEIN (40801) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 32 51 N LONGITUDE 53 5 E DATA PROCESSING CENTER ELEVATION 1549.0 M MEANS AND EXTREMES FOR THE YEAR 2000 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AIR TEMPERATURE (C) 5.5 7.2 12.3 22.0 27.4 27.7 28.1 29.5 27.5 18.6 9.6 7.2 18.6 MINIMUN AIR TEMPERATURE (C) -2.1 -0.9 3.4 11.8 16.3 18.2 19.7 19.3 17.6 9.3 3.1 0.8 9.7 DAYS WITH MINIMUM TEMP. >=21 0 0 0 0 1 3 16 7 4 0 0 0 31 DAYS WITH MINIMUM TEMP. <=-4 11 5 2 0 0 0 0 0 0 0 0 2 20 DAYS WITH FREEZING MIN.<= 0 22 22 9 0 0 0 0 0 0 0 5 14 72 TEMPERATURE RECORDS LOWEST(C) -10.2 -6.8 -5.0 7.0 11.6 10.5 14.5 15.2 13.0 4.4 -1.0 -4.6 -10.2 DAY 15 9 10 1 12 14 20 21 26 5 29 17 MAXIMUM AIR TEMPERATURE (C) 10.3 12.3 17.1 26.9 32.3 34.3 35.1 35.0 32.2 23.5 13.4 11.4 23.6 DAYS WITH MAXIMUM TEMP. >=30 0 0 0 4 26 26 31 31 27 0 0 0 145 DAYS WITH MAXIMUM TEMP. <= 0 0 0 0 0 0 0 0 0 0 0 0 0 0 TEMPERATURE RECORDS HIGHEST(C) 16.5 17.6 25.4 31.2 36.4 40.5 39.5 37.8 35.5 29.2 22.0 16.8 40.5 DAY 1 24 24 15 26 24 8 3 1 1 3 21 DIF. BETWEEN (MAX.-MIN.) (C) 12.4 13.2 13.7 15.1 16.0 16.1 15.4 15.7 14.6 14.2 10.3 10.6 13.9 MEAN DAILY TEMP. (MDT) (C) 4.1 5.7 10.3 19.4 24.3 26.2 27.4 27.1 24.9 16.4 8.3 6.1 16.7 COOLING DEG. DAYS(BASE 21 0C) 0.0 0.0 0.0 11.0 103.2 160.9 197.8 190.2 118.6 0.6 0.0 0.0 782.4 HEATING DEG. DAYS(BASE 18 0C) 430.9 357.1 240.4 19.7 0.0 0.0 0.0 0.0 0.0 57.7 291.6 368.9 1766.3 DEWPOINT (MEAN C) -8.5 -8.3 -10.1 -4.9 -7.2 -2.5 2.0 5.1 3.1 -0.4 -1.7 -2.7 -3.0 MIXING RATIO (G/KG) 2.58 2.60 2.34 3.38 2.84 4.02 5.68 6.88 6.11 4.61 4.14 3.98 4.10 VAPOUR PRESSURE (HPA) 3.48 3.50 3.15 4.55 3.82 5.37 7.59 9.18 8.16 6.22 5.60 5.36 5.50 SATURATION DEF. (HPA) 6.18 7.27 12.01 23.03 34.20 33.86 32.06 33.70 29.98 16.29 6.85 5.15 20.05 RELATIVE HUMIDITY (MEAN %) 40 37 24 18 11 16 20 22 23 32 49 55 29 RELATIVE HUMIDITY (MAX. %) 57 60 44 31 19 22 28 30 33 48 71 72 43 RELATIVE HUMIDITY (MIN. %) 27 23 13 11 6 10 13 18 17 22 37 42 20 RELATIVE HUMIDITY (MEAN% 03UTC) 53 58 43 31 19 21 27 30 33 48 70 70 42 RELATIVE HUMIDITY (MEAN% 09UTC) 33 28 17 14 9 12 15 20 19 25 41 46 23 RELATIVE HUMIDITY (MEAN% 15UTC) 42 32 18 14 8 11 15 20 20 30 49 58 26 RH=0 => RELATIVE HUMIDITY < 0.5% AMOUNT OF PRECIPITATION MM. 19.2 2.9 2.0 0.0 0.0 0.0 0.0 0.0 0.0 2.6 14.8 24.7 66.2 DAYS WITH PRECIPITATION >=10 1 0 0 0 0 0 0 0 0 0 0 1 2 DAYS WITH PRECIPITATION >= 5 1 0 0 0 0 0 0 0 0 0 1 3 5 DAYS WITH PRECIPITATION >= 1 3 1 1 0 0 0 0 0 0 1 4 4 14 DAYS WITH PRECIPITATION 5 5 1 0 0 0 0 0 0 1 7 9 28 GREATEST DAILY PRECIPITATION 14.0 1.0 2.0 0.0 0.0 0.0 0.0 0.0 0.0 2.6 8.0 12.0 14.0 DAY 29 8 25 ** ** ** ** ** ** 4 6 10 DAY WITH THUNDER STORM 0 0 0 0 0 0 0 0 0 0 1 0 1 DAYS WITH SNOW OR SLEET 1 2 0 0 0 0 0 0 0 0 1 0 4 DAYS WITH DUST 0 0 6 4 2 0 0 0 0 0 0 0 12 WIND DIRECTION (PREVAILING) 270 270 270 270 270 90 45 45 90 90 90 90 270 PREVAILING WIND SPEED(KNOTS) 6.3 8.7 10.1 11.9 12.2 8.2 9.1 8.7 8.1 7.4 5.6 7.3 9.1 PREVAILING WIND PERCENT 12.9 17.9 18.7 26.7 19.4 16.5 21.8 25.0 18.0 16.8 10.0 9.0 13.4 CALMS PERCENT OF WIND 40.0 36.6 23.9 22.0 25.2 29.7 35.1 26.7 30.7 48.4 65.3 63.2 36.8 NO. OF WIND OBSERVATION 155 145 155 150 155 212 248 180 150 155 150 155 2010 VECTOR WIND DIRECTION (MEAN) 201 236 245 269 292 20 31 42 26 28 351 210 316 VECTOR WIND MAGNITUDE(KNOTS) 2.4 1.4 2.8 4.0 2.1 2.6 3.2 3.3 1.5 1.2 0.5 1.6 0.7 WIND STEADINESES (MEAN %) 43.6 25.0 34.6 50.0 28.0 44.8 55.2 54.1 26.3 30.8 21.7 43.2 12.3 WIND SPEED (MEAN KNOTS) 5.5 5.6 8.1 8.0 7.5 5.8 5.8 6.1 5.7 3.9 2.3 3.7 5.7 FASTEST WIND DIRECTION 250 230 200 250 260 30 60 80 280 320 210 210 210 FASTEST WIND SPEED (KNOTS) 27 23 31 31 29 19 23 19 19 19 35 27 35 DAY 22 7 25 15 1 3 6 5 2 15 27 25 DAYS WITH SKY CLEAR (0-2)/8 16 20 19 15 28 30 26 31 25 25 16 15 266 DAYS WITH P.CLOUDY (3-6)/8 9 7 9 15 1 0 5 0 5 5 7 14 77 DAYS WITH CLOUDY (7-8)/8 6 2 3 0 2 0 0 0 0 1 7 2 23 DAYS WITH VISIBILITY =< 2 KM 0 0 1 0 0 0 0 0 0 0 0 2 3 DURATION OF SUNSHINE HOURS 208.7 251.6 263.5 288.5 343.8 367.7 369.3 355.5 292.8 280.0 188.6 208.1 3418.1 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION NAEIN (40801) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 32 51 N LONGITUDE 53 5 E DATA PROCESSING CENTER ELEVATION 1549.0 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 842.0 842.3 841.2 842.1 839.8 838.3 839.5 840.2 841.0 845.3 846.5 844.3 841.9 MAX. QFE PRESSURE IN HPA 850.6 850.2 846.9 847.7 845.0 844.2 846.1 845.0 847.8 850.6 855.8 851.6 855.8 DAY-HOUR 31- 6 11- 6 21- 6 2- 6 4- 6 3- 6 30- 6 23- 6 29- 6 16- 6 17- 6 4- 6 MIN. QFE PRESSURE IN HPA 834.2 830.8 834.4 838.0 834.7 831.1 832.8 833.1 832.0 839.0 840.3 834.4 830.8 DAY-HOUR 21-12 7-12 13-15 21-15 26-15 24-15 11-15 31-15 1-15 1-12 21-12 15-12 MEAN QNH PRESSURE IN HPA 1014.8 1015.0 1013.8 1014.9 1012.2 1010.4 1011.8 1012.7 1013.6 1018.5 1019.9 1017.4 1014.6 MAX. QNH PRESSURE IN HPA 1024.7 1024.3 1020.4 1021.4 1018.2 1017.3 1019.5 1018.2 1021.5 1024.7 1030.8 1025.9 1030.8 DAY-HOUR 31- 6 11- 6 21- 6 2- 6 4- 6 3- 6 30- 6 23- 6 29- 6 16- 6 17- 6 4- 6 MIN. QNH PRESSURE IN HPA 1005.7 1001.7 1005.9 1010.1 1006.2 1002.0 1004.0 1004.4 1003.1 1011.2 1012.8 1005.9 1001.7 DAY-HOUR 21-12 7-12 13-15 21-15 26-15 24-15 11-15 31-15 1-15 1-12 21-12 15-12 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** 996.5 997.0 ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** 1006.7 1005.3 ****** ****** ****** ****** ****** ****** DAY-HOUR **-** **-** **-** **-** **-** 14- 3 31- 3 **-** **-** **-** **-** **-** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** 985.4 987.8 ****** ****** ****** ****** ****** ****** DAY-HOUR **-** **-** **-** **-** **-** 24-18 11-12 **-** **-** **-** **-** **-** PRESSURE AT HOUR 0000 UTC. MEAN QFE PRESSURE IN HPA ****** ****** ****** ****** ****** 838.4 839.4 ****** ****** ****** ****** ****** ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** 842.4 844.5 ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** 17 31 ** ** ** ** ** MIN. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** 832.8 833.8 ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** 25 12 ** ** ** ** ** MEAN QNH PRESSURE IN HPA ****** ****** ****** ****** ****** 1010.6 1011.7 ****** ****** ****** ****** ****** ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** 1015.2 1017.6 ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** 17 31 ** ** ** ** ** MIN. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** 1004.0 1005.2 ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** 25 12 ** ** ** ** ** MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** 996.9 997.1 ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** 1006.5 1003.9 ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** 14 23 ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** 987.0 988.4 ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** 25 12 ** ** ** ** ** PRESSURE AT HOUR 0300 UTC. MEAN QFE PRESSURE IN HPA 842.3 842.4 841.8 842.7 840.8 839.1 840.0 841.0 841.6 845.7 846.6 844.5 842.4 MAX. QFE PRESSURE IN HPA 849.4 849.8 845.8 845.9 844.7 843.1 845.4 844.0 846.9 849.5 854.3 850.2 854.3 DAY 31 11 21 2 7 3 31 20 30 16 17 4 MIN. QFE PRESSURE IN HPA 835.3 832.4 836.4 839.6 837.1 833.9 834.6 835.5 834.7 841.7 841.2 836.6 832.4 DAY 21 7 2 22 27 26 12 31 1 1 22 15 MEAN QNH PRESSURE IN HPA 1015.0 1015.2 1014.5 1015.6 1013.4 1011.3 1012.4 1013.5 1014.3 1019.0 1020.1 1017.6 1015.2 MAX. QNH PRESSURE IN HPA 1023.3 1023.8 1019.2 1019.3 1017.9 1016.0 1018.7 1017.1 1020.4 1023.5 1029.0 1024.3 1029.0 DAY 31 11 21 2 7 3 31 20 30 16 17 4 MIN. QNH PRESSURE IN HPA 1006.9 1003.6 1008.2 1011.9 1009.0 1005.3 1006.1 1007.2 1006.2 1014.4 1013.8 1008.4 1003.6 DAY 21 7 2 22 27 26 12 31 1 1 22 15 MEAN QFF PRESSURE IN HPA 1016.3 1015.5 1011.5 1006.9 1001.2 997.7 998.2 999.7 1001.9 1012.4 1018.7 1017.7 1008.1 MAX. QFF PRESSURE IN HPA 1026.0 1027.0 1019.5 1014.0 1007.5 1006.7 1005.3 1005.0 1010.2 1020.8 1028.7 1025.6 1028.7 DAY 31 11 4 2 4 14 31 21 26 5 17 17 MIN. QFF PRESSURE IN HPA 1005.3 1001.0 1000.8 1002.2 994.2 989.3 990.4 993.1 991.8 1004.5 1011.1 1008.1 989.3 DAY 21 7 25 21 27 25 12 31 2 1 6 15 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION NAEIN (40801) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 32 51 N LONGITUDE 53 5 E DATA PROCESSING CENTER ELEVATION 1549.0 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 843.4 843.5 842.7 843.5 841.3 839.5 840.5 841.6 842.4 846.5 847.6 845.4 843.2 MAX. QFE PRESSURE IN HPA 850.6 850.2 846.9 847.7 845.0 844.2 846.1 845.0 847.8 850.6 855.8 851.6 855.8 DAY 31 11 21 2 4 3 30 23 29 16 17 4 MIN. QFE PRESSURE IN HPA 836.0 832.2 836.8 840.1 838.0 833.5 835.4 836.2 835.0 841.4 841.9 837.3 832.2 DAY 21 7 2 21 27 26 11 31 1 1 6 15 MEAN QNH PRESSURE IN HPA 1016.4 1016.5 1015.6 1016.5 1013.9 1011.9 1013.0 1014.2 1015.2 1020.0 1021.2 1018.7 1016.1 MAX. QNH PRESSURE IN HPA 1024.7 1024.3 1020.4 1021.4 1018.2 1017.3 1019.5 1018.2 1021.5 1024.7 1030.8 1025.9 1030.8 DAY 31 11 21 2 4 3 30 23 29 16 17 4 MIN. QNH PRESSURE IN HPA 1007.7 1003.3 1008.7 1012.5 1010.1 1004.8 1007.1 1008.0 1006.6 1014.0 1014.6 1009.3 1003.3 DAY 21 7 2 21 27 26 11 31 1 1 6 15 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** 997.5 997.5 ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** 1006.0 1004.7 ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** 14 30 ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** 989.0 989.6 ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** 26 11 ** ** ** ** ** PRESSURE AT HOUR 0900 UTC. MEAN QFE PRESSURE IN HPA 842.2 842.7 841.6 842.5 840.3 838.8 839.9 840.8 841.4 845.4 846.5 844.2 842.2 MAX. QFE PRESSURE IN HPA 848.7 848.3 845.7 846.5 844.2 843.3 845.3 844.8 847.0 849.5 854.6 850.5 854.6 DAY 31 11 21 2 4 3 30 23 29 16 17 4 MIN. QFE PRESSURE IN HPA 835.1 831.1 835.5 839.6 837.0 833.3 834.7 835.1 834.1 840.5 841.2 835.1 831.1 DAY 21 7 2 22 26 26 11 31 1 1 6 15 MEAN QNH PRESSURE IN HPA 1014.9 1015.5 1014.3 1015.4 1012.8 1011.0 1012.2 1013.4 1014.1 1018.7 1019.9 1017.3 1015.0 MAX. QNH PRESSURE IN HPA 1022.5 1022.1 1019.0 1020.0 1017.3 1016.2 1018.6 1018.0 1020.6 1023.5 1029.4 1024.6 1029.4 DAY 31 11 21 2 4 3 30 23 29 16 17 4 MIN. QNH PRESSURE IN HPA 1006.7 1002.0 1007.2 1011.9 1008.9 1004.6 1006.2 1006.7 1005.5 1013.0 1013.8 1006.7 1002.0 DAY 21 7 2 22 26 26 11 31 1 1 6 15 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** 997.1 997.3 ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** 1005.5 1004.5 ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** 14 30 ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** 988.7 989.3 ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** 24 11 ** ** ** ** ** PRESSURE AT HOUR 1200 UTC. MEAN QFE PRESSURE IN HPA 840.9 841.1 839.9 841.0 838.6 837.3 838.6 839.3 839.9 844.1 845.6 843.4 840.8 MAX. QFE PRESSURE IN HPA 847.5 847.2 843.8 844.9 842.8 841.6 844.3 843.1 845.7 848.2 853.4 849.2 853.4 DAY 30 10 27 2 4 16 30 20 29 16 17 4 MIN. QFE PRESSURE IN HPA 834.2 830.8 834.9 838.4 835.3 831.9 833.2 833.3 832.3 839.0 840.3 834.4 830.8 DAY 21 7 24 22 26 26 12 31 1 1 21 15 MEAN QNH PRESSURE IN HPA 1013.5 1013.7 1012.3 1013.5 1010.7 1009.3 1010.8 1011.5 1012.3 1017.2 1018.9 1016.4 1013.3 MAX. QNH PRESSURE IN HPA 1021.1 1020.8 1016.8 1018.1 1015.7 1014.3 1017.4 1016.0 1019.0 1021.9 1028.0 1023.1 1028.0 DAY 30 10 27 2 4 16 30 20 29 16 17 4 MIN. QNH PRESSURE IN HPA 1005.7 1001.7 1006.5 1010.5 1006.9 1003.0 1004.5 1004.6 1003.4 1011.2 1012.8 1005.9 1001.7 DAY 21 7 24 22 26 26 12 31 1 1 21 15 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** 995.9 996.1 ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** 1003.3 1003.8 ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** 16 30 ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** 987.6 987.8 ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** 24 11 ** ** ** ** ** ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION NAEIN (40801) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 32 51 N LONGITUDE 53 5 E DATA PROCESSING CENTER ELEVATION 1549.0 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 841.4 841.6 840.1 840.8 838.2 836.7 838.3 839.1 839.8 844.7 846.2 844.2 840.9 MAX. QFE PRESSURE IN HPA 849.0 847.8 843.8 844.5 841.8 841.3 844.2 843.0 845.7 848.5 853.1 849.9 853.1 DAY 30 10 28 2 3 16 30 20 29 16 17 4 MIN. QFE PRESSURE IN HPA 834.5 832.9 834.4 838.0 834.7 831.1 832.8 833.1 832.0 839.5 841.0 835.6 831.1 DAY 21 7 13 21 26 24 11 31 1 1 21 15 MEAN QNH PRESSURE IN HPA 1014.1 1014.3 1012.6 1013.4 1010.4 1008.6 1010.4 1011.4 1012.2 1017.9 1019.6 1017.3 1013.5 MAX. QNH PRESSURE IN HPA 1022.9 1021.5 1016.8 1017.6 1014.5 1013.9 1017.3 1015.9 1019.0 1022.3 1027.6 1023.9 1027.6 DAY 30 10 28 2 3 16 30 20 29 16 17 4 MIN. QNH PRESSURE IN HPA 1006.0 1004.1 1005.9 1010.1 1006.2 1002.0 1004.0 1004.4 1003.1 1011.8 1013.6 1007.3 1002.0 DAY 21 7 13 21 26 24 11 31 1 1 21 15 MEAN QFF PRESSURE IN HPA 1015.3 1014.6 1009.5 1004.5 998.1 994.9 996.2 997.2 999.8 1011.3 1018.3 1017.3 1006.4 MAX. QFF PRESSURE IN HPA 1025.3 1024.6 1016.6 1012.0 1004.9 1003.1 1003.9 1003.6 1008.3 1018.1 1028.4 1024.2 1028.4 DAY 30 10 3 2 3 16 30 20 29 5 17 18 MIN. QFF PRESSURE IN HPA 1004.0 1003.7 999.2 1000.2 991.8 986.5 988.2 989.7 989.0 1002.2 1010.9 1007.3 986.5 DAY 21 7 24 21 26 24 10 31 1 1 2 15 PRESSURE AT HOUR 1800 UTC. MEAN QFE PRESSURE IN HPA ****** ****** ****** ****** ****** 838.1 839.5 ****** ****** ****** ****** ****** ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** 842.4 845.4 ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** 16 30 ** ** ** ** ** MIN. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** 831.9 834.1 ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** 24 11 ** ** ** ** ** MEAN QNH PRESSURE IN HPA ****** ****** ****** ****** ****** 1010.2 1011.9 ****** ****** ****** ****** ****** ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** 1015.2 1018.7 ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** 16 30 ** ** ** ** ** MIN. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** 1003.0 1005.5 ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** 24 11 ** ** ** ** ** MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** 995.6 996.5 ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** 1004.6 1004.2 ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** 13 30 ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** 985.4 988.5 ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** 24 11 ** ** ** ** ** PRESSURE AT HOUR 2100 UTC. MEAN QFE PRESSURE IN HPA ****** ****** ****** ****** ****** 838.6 839.8 ****** ****** ****** ****** ****** ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** 843.0 845.7 ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** 16 30 ** ** ** ** ** MIN. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** 831.9 834.7 ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** 24 11 ** ** ** ** ** MEAN QNH PRESSURE IN HPA ****** ****** ****** ****** ****** 1010.8 1012.2 ****** ****** ****** ****** ****** ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** 1015.9 1019.0 ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** 16 30 ** ** ** ** ** MIN. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** 1003.0 1006.2 ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** 24 11 ** ** ** ** ** MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** 996.4 997.3 ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** 1005.8 1005.0 ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** 13 30 ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** 985.6 989.7 ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** 24 11 ** ** ** ** ** ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION NAEIN (40801) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 32 51 N LONGITUDE 53 5 E DATA PROCESSING CENTER ELEVATION 1549.0 M MEANS AND EXTREMES FOR THE YEAR 2001 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AIR TEMPERATURE (C) 4.2 8.3 14.5 21.5 25.7 29.7 31.1 30.5 26.4 21.3 13.2 9.2 19.6 MINIMUN AIR TEMPERATURE (C) -3.1 -0.1 5.7 11.3 15.6 19.0 21.7 19.7 16.4 11.8 4.4 2.8 10.4 DAYS WITH MINIMUM TEMP. >=21 0 0 0 0 1 9 18 10 0 0 0 0 38 DAYS WITH MINIMUM TEMP. <=-4 7 2 0 0 0 0 0 0 0 0 1 0 10 DAYS WITH FREEZING MIN.<= 0 25 17 2 0 0 0 0 0 0 0 4 5 53 TEMPERATURE RECORDS LOWEST(C) -18.0 -5.6 -2.4 6.4 10.2 14.4 14.0 15.0 11.4 7.0 -5.0 -3.6 -18.0 DAY 29 1 12 11 5 13 31 14 21 28 20 18 MAXIMUM AIR TEMPERATURE (C) 8.8 13.3 19.1 26.5 30.6 34.2 35.7 35.3 31.2 26.3 18.2 13.5 24.4 DAYS WITH MAXIMUM TEMP. >=30 0 0 0 1 18 25 31 30 22 2 0 0 129 DAYS WITH MAXIMUM TEMP. <= 0 2 0 0 0 0 0 0 0 0 0 0 0 2 TEMPERATURE RECORDS HIGHEST(C) 17.6 19.6 26.2 30.4 36.4 39.8 41.4 38.2 36.0 31.6 25.4 20.5 41.4 DAY 14 20 31 28 15 29 10 24 10 1 7 29 DIF. BETWEEN (MAX.-MIN.) (C) 11.9 13.4 13.4 15.2 15.0 15.2 14.0 15.6 14.8 14.5 13.8 10.7 14.0 MEAN DAILY TEMP. (MDT) (C) 2.8 6.6 12.4 18.9 23.1 26.6 28.7 27.5 23.8 19.1 11.3 8.1 17.4 COOLING DEG. DAYS(BASE 21 0C) 0.0 0.0 0.0 3.4 72.7 169.1 239.3 202.3 93.2 3.5 0.0 0.0 783.7 HEATING DEG. DAYS(BASE 18 0C) 470.5 319.5 174.9 13.3 0.0 0.0 0.0 0.0 0.2 10.0 200.8 305.6 1494.9 DEWPOINT (MEAN C) -7.1 -7.0 -3.1 -3.7 0.9 4.2 3.0 1.4 -1.6 -2.4 -5.4 -0.1 -1.8 MIXING RATIO (G/KG) 2.80 2.80 3.78 3.59 5.12 6.74 5.94 5.29 4.13 3.93 3.18 4.77 4.34 VAPOUR PRESSURE (HPA) 3.78 3.78 5.08 4.82 6.85 8.96 7.92 7.09 5.56 5.30 4.29 6.43 5.82 SATURATION DEF. (HPA) 5.11 7.73 12.43 21.93 27.66 34.62 39.02 38.49 30.63 21.20 11.76 5.66 21.35 RELATIVE HUMIDITY (MEAN %) 49 38 35 20 23 23 19 17 17 23 30 57 29 RELATIVE HUMIDITY (MAX. %) 65 58 55 34 37 32 28 27 27 37 43 70 43 RELATIVE HUMIDITY (MIN. %) 37 24 24 13 15 19 14 12 13 15 21 46 21 RELATIVE HUMIDITY (MEAN% 03UTC) 64 57 53 34 36 31 28 26 27 37 41 69 42 RELATIVE HUMIDITY (MEAN% 09UTC) 41 31 29 16 19 21 16 15 14 18 24 50 25 RELATIVE HUMIDITY (MEAN% 15UTC) 50 31 31 16 18 21 15 15 15 20 32 58 27 RH=0 => RELATIVE HUMIDITY < 0.5% AMOUNT OF PRECIPITATION MM. 14.1 1.6 22.7 0.0 1.7 0.3 0.0 0.0 0.0 0.0 0.6 14.0 55.0 DAYS WITH PRECIPITATION >=10 0 0 0 0 0 0 0 0 0 0 0 0 0 DAYS WITH PRECIPITATION >= 5 1 0 2 0 0 0 0 0 0 0 0 1 4 DAYS WITH PRECIPITATION >= 1 2 1 5 0 1 0 0 0 0 0 0 4 13 DAYS WITH PRECIPITATION 4 2 6 0 2 1 0 0 0 0 1 9 25 GREATEST DAILY PRECIPITATION 9.0 1.3 8.0 0.0 1.0 0.3 0.0 0.0 0.0 0.0 0.6 7.0 9.0 DAY 27 11 11 ** 3 16 ** ** ** ** 29 2 DAY WITH THUNDER STORM 0 0 0 0 0 0 0 0 0 0 0 0 0 DAYS WITH SNOW OR SLEET 2 2 1 0 0 0 0 0 0 0 0 0 5 DAYS WITH DUST 0 0 0 0 0 0 0 0 0 0 0 0 0 WIND DIRECTION (PREVAILING) 90 90 270 270 270 360 45 45 45 270 90 90 90 PREVAILING WIND SPEED(KNOTS) 5.7 8.3 9.8 10.6 13.4 10.6 10.9 9.0 9.4 12.5 8.8 8.6 9.2 PREVAILING WIND PERCENT 12.3 10.7 13.5 20.7 23.2 18.7 27.1 19.4 19.3 18.7 15.3 12.3 12.4 CALMS PERCENT OF WIND 72.3 47.9 47.1 30.0 25.8 26.0 13.5 29.0 32.7 23.9 38.0 47.7 36.1 NO. OF WIND OBSERVATION 155 140 155 150 155 150 155 155 150 155 150 155 1825 VECTOR WIND DIRECTION (MEAN) 353 252 257 253 267 7 31 20 18 260 228 187 316 VECTOR WIND MAGNITUDE(KNOTS) 0.6 1.7 1.0 2.6 3.9 3.2 5.5 2.6 1.8 2.0 1.0 2.3 0.9 WIND STEADINESES (MEAN %) 28.6 28.3 19.2 34.2 42.4 43.2 60.4 38.2 27.7 24.1 15.2 40.4 13.4 WIND SPEED (MEAN KNOTS) 2.1 6.0 5.2 7.6 9.2 7.4 9.1 6.8 6.5 8.3 6.6 5.7 6.7 FASTEST WIND DIRECTION 330 230 260 250 190 280 280 330 70 280 190 200 250 FASTEST WIND SPEED (KNOTS) 19 29 27 33 31 19 23 29 23 23 31 27 33 DAY 27 4 17 12 11 1 13 11 18 21 18 21 DAYS WITH SKY CLEAR (0-2)/8 19 21 20 21 23 27 28 28 27 27 21 14 276 DAYS WITH P.CLOUDY (3-6)/8 8 5 9 7 6 3 3 3 3 4 8 9 68 DAYS WITH CLOUDY (7-8)/8 4 2 2 2 2 0 0 0 0 0 1 8 21 DAYS WITH VISIBILITY =< 2 KM 1 0 0 1 0 0 0 0 0 0 0 2 4 DURATION OF SUNSHINE HOURS 226.2 238.6 260.1 284.5 312.4 359.0 349.9 345.6 303.4 289.7 231.2 173.7 3374.3 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION NAEIN (40801) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 32 51 N LONGITUDE 53 5 E DATA PROCESSING CENTER ELEVATION 1549.0 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 844.5 842.4 841.9 841.6 839.9 837.7 837.5 840.9 842.6 845.0 844.9 845.8 842.1 MAX. QFE PRESSURE IN HPA 848.8 851.0 850.6 849.9 844.6 845.5 844.0 845.9 849.7 852.9 852.3 851.2 852.9 DAY-HOUR 10- 6 9- 6 1- 6 2- 6 11- 9 2- 6 29- 6 14- 6 22- 6 10- 6 2- 6 28- 6 MIN. QFE PRESSURE IN HPA 839.0 829.8 830.8 834.5 833.4 831.5 830.8 834.3 836.7 839.9 833.8 838.0 829.8 DAY-HOUR 19-12 21-12 25-15 9-15 25-15 6-15 10-15 27-12 5-12 1-12 18-12 5-12 MEAN QNH PRESSURE IN HPA 1017.7 1015.2 1014.6 1014.3 1012.3 1009.7 1009.5 1013.5 1015.5 1018.3 1018.1 1019.2 1014.8 MAX. QNH PRESSURE IN HPA 1022.6 1025.2 1024.7 1023.9 1017.8 1018.8 1017.1 1019.3 1023.7 1027.4 1026.7 1025.4 1027.4 DAY-HOUR 10- 6 9- 6 1- 6 2- 6 11- 9 2- 6 29- 6 14- 6 22- 6 10- 6 2- 6 28- 6 MIN. QNH PRESSURE IN HPA 1011.2 1000.5 1001.7 1006.0 1004.7 1002.5 1001.7 1005.8 1008.6 1012.3 1005.2 1010.1 1000.5 DAY-HOUR 19-12 21-12 25-15 9-15 25-15 6-15 10-15 27-12 5-12 1-12 18-12 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 844.5 842.7 842.3 842.3 840.7 838.4 838.1 841.6 843.2 845.5 845.1 845.9 842.5 MAX. QFE PRESSURE IN HPA 847.9 849.6 849.7 849.2 844.1 844.6 843.5 845.4 848.5 851.6 850.5 850.0 851.6 DAY 10 10 2 2 17 2 29 14 22 10 2 18 MIN. QFE PRESSURE IN HPA 839.9 834.0 831.2 837.8 835.8 833.0 832.1 836.6 838.3 841.9 837.0 839.1 831.2 DAY 24 22 26 13 30 18 18 27 6 1 18 5 MEAN QNH PRESSURE IN HPA 1017.6 1015.6 1015.0 1015.1 1013.2 1010.5 1010.1 1014.2 1016.1 1018.8 1018.4 1019.3 1015.3 MAX. QNH PRESSURE IN HPA 1021.6 1023.6 1023.7 1023.1 1017.2 1017.8 1016.5 1018.7 1022.3 1025.9 1024.6 1024.0 1025.9 DAY 10 10 2 2 17 2 29 14 22 10 2 18 MIN. QNH PRESSURE IN HPA 1012.3 1005.4 1002.2 1009.8 1007.5 1004.3 1003.2 1008.4 1010.4 1014.6 1008.9 1011.4 1002.2 DAY 24 22 26 13 30 18 18 27 6 1 18 5 MEAN QFF PRESSURE IN HPA 1020.1 1015.2 1010.6 1006.4 1001.7 996.5 995.2 1000.3 1004.7 1010.5 1015.2 1018.0 1007.9 MAX. QFF PRESSURE IN HPA 1030.4 1024.6 1023.7 1014.8 1007.6 1005.9 1003.7 1007.6 1014.8 1019.2 1025.8 1025.9 1030.4 DAY 29 9 12 2 12 2 29 14 22 11 20 18 MIN. QFF PRESSURE IN HPA 1012.9 1000.3 996.4 1000.6 993.0 989.7 986.7 993.7 997.2 1004.4 1003.8 1009.2 986.7 DAY 4 21 25 26 30 7 11 27 6 1 18 5 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION NAEIN (40801) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 32 51 N LONGITUDE 53 5 E DATA PROCESSING CENTER ELEVATION 1549.0 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 845.5 843.7 843.1 843.0 841.2 838.9 838.5 842.2 844.0 846.4 846.1 846.9 843.3 MAX. QFE PRESSURE IN HPA 848.8 851.0 850.6 849.9 844.6 845.5 844.0 845.9 849.7 852.9 852.3 851.2 852.9 DAY 10 9 1 2 17 2 29 14 22 10 2 28 MIN. QFE PRESSURE IN HPA 841.1 833.7 832.6 838.4 836.6 833.5 832.9 836.6 839.3 842.6 837.2 840.1 832.6 DAY 4 21 26 13 25 18 18 27 6 1 18 5 MEAN QNH PRESSURE IN HPA 1018.9 1016.7 1016.1 1015.9 1013.8 1011.1 1010.7 1014.9 1017.0 1019.9 1019.6 1020.5 1016.2 MAX. QNH PRESSURE IN HPA 1022.6 1025.2 1024.7 1023.9 1017.8 1018.8 1017.1 1019.3 1023.7 1027.4 1026.7 1025.4 1027.4 DAY 10 9 1 2 17 2 29 14 22 10 2 28 MIN. QNH PRESSURE IN HPA 1013.7 1005.1 1003.8 1010.5 1008.4 1004.8 1004.1 1008.4 1011.6 1015.4 1009.1 1012.5 1003.8 DAY 4 21 26 13 25 18 18 27 6 1 18 5 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** PRESSURE AT HOUR 0900 UTC. MEAN QFE PRESSURE IN HPA 844.7 842.9 842.3 842.0 840.4 838.2 838.0 841.5 843.0 845.3 844.9 845.9 842.4 MAX. QFE PRESSURE IN HPA 847.6 850.5 850.1 849.1 844.6 844.7 843.6 845.2 848.8 852.2 851.7 850.2 852.2 DAY 10 9 1 2 11 2 29 14 22 10 2 9 MIN. QFE PRESSURE IN HPA 840.0 832.0 833.2 837.7 835.4 833.0 832.7 835.8 838.4 841.5 835.1 839.2 832.0 DAY 19 21 26 9 30 18 18 27 5 1 18 5 MEAN QNH PRESSURE IN HPA 1017.8 1015.8 1015.0 1014.7 1012.8 1010.3 1010.0 1014.1 1015.9 1018.6 1018.1 1019.3 1015.2 MAX. QNH PRESSURE IN HPA 1021.2 1024.6 1024.2 1023.0 1017.8 1017.9 1016.6 1018.5 1022.6 1026.6 1026.0 1024.3 1026.6 DAY 10 9 1 2 11 2 29 14 22 10 2 9 MIN. QNH PRESSURE IN HPA 1012.4 1003.1 1004.5 1009.7 1007.1 1004.3 1003.9 1007.5 1010.5 1014.2 1006.7 1011.5 1003.1 DAY 19 21 26 9 30 18 18 27 5 1 18 5 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** PRESSURE AT HOUR 1200 UTC. MEAN QFE PRESSURE IN HPA 843.6 841.2 840.7 840.4 838.7 836.9 836.6 839.9 841.5 843.9 843.8 844.9 841.0 MAX. QFE PRESSURE IN HPA 846.8 849.5 848.9 846.9 841.9 842.8 841.7 843.6 847.1 850.7 850.0 849.2 850.7 DAY 29 9 1 2 13 2 28 14 22 10 2 9 MIN. QFE PRESSURE IN HPA 839.0 829.8 831.9 834.9 833.9 832.1 831.6 834.3 836.7 839.9 833.8 838.0 829.8 DAY 19 21 25 9 25 18 10 27 5 1 18 5 MEAN QNH PRESSURE IN HPA 1016.6 1013.8 1013.3 1012.8 1010.9 1008.7 1008.5 1012.3 1014.2 1016.9 1016.9 1018.1 1013.6 MAX. QNH PRESSURE IN HPA 1020.3 1023.5 1022.8 1020.4 1014.6 1015.7 1014.4 1016.6 1020.7 1024.9 1024.0 1023.1 1024.9 DAY 29 9 1 2 13 2 28 14 22 10 2 9 MIN. QNH PRESSURE IN HPA 1011.2 1000.5 1003.0 1006.5 1005.3 1003.2 1002.6 1005.8 1008.6 1012.3 1005.2 1010.1 1000.5 DAY 19 21 25 9 25 18 10 27 5 1 18 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 NAEIN (40801) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 32 51 N LONGITUDE 53 5 E DATA PROCESSING CENTER ELEVATION 1549.0 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 844.3 841.7 841.0 840.3 838.4 836.3 836.2 839.6 841.6 844.1 844.5 845.6 841.1 MAX. QFE PRESSURE IN HPA 847.3 849.8 849.0 847.3 841.6 842.3 841.9 843.3 847.1 851.0 850.3 849.8 851.0 DAY 29 9 1 2 13 2 28 14 22 10 2 9 MIN. QFE PRESSURE IN HPA 839.9 831.1 830.8 834.5 833.4 831.5 830.8 834.3 836.7 840.3 834.6 839.1 830.8 DAY 19 21 25 9 25 6 10 27 5 1 18 5 MEAN QNH PRESSURE IN HPA 1017.4 1014.4 1013.6 1012.8 1010.6 1008.1 1008.0 1012.0 1014.2 1017.2 1017.7 1018.9 1013.7 MAX. QNH PRESSURE IN HPA 1020.9 1023.8 1022.9 1020.9 1014.3 1015.1 1014.6 1016.2 1020.7 1025.2 1024.4 1023.8 1025.2 DAY 29 9 1 2 13 2 28 14 22 10 2 9 MIN. QNH PRESSURE IN HPA 1012.3 1002.0 1001.7 1006.0 1004.7 1002.5 1001.7 1005.8 1008.6 1012.8 1006.1 1011.4 1001.7 DAY 19 21 25 9 25 6 10 27 5 1 18 5 MEAN QFF PRESSURE IN HPA 1019.9 1013.8 1009.0 1004.1 998.9 993.8 993.0 997.9 1002.8 1008.9 1014.6 1017.4 1006.2 MAX. QFF PRESSURE IN HPA 1030.0 1025.2 1022.5 1012.9 1003.8 1002.4 1001.8 1004.3 1012.2 1018.3 1027.2 1025.4 1030.0 DAY 29 9 11 2 1 2 29 14 22 10 20 22 MIN. QFF PRESSURE IN HPA 1013.5 997.9 995.5 996.6 991.3 987.0 985.1 990.5 994.5 1001.7 1001.4 1007.7 985.1 DAY 4 21 25 9 25 6 10 27 5 1 18 5 PRESSURE AT HOUR 1800 UTC. MEAN QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** PRESSURE AT HOUR 2100 UTC. MEAN QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION NAEIN (40801) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 32 51 N LONGITUDE 53 5 E DATA PROCESSING CENTER ELEVATION 1549.0 M MEANS AND EXTREMES FOR THE YEAR 2002 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AIR TEMPERATURE (C) 5.3 9.3 14.3 18.1 24.8 29.2 30.8 31.8 28.4 22.4 11.5 5.7 19.3 MINIMUN AIR TEMPERATURE (C) -1.4 1.1 4.5 10.8 15.0 19.3 21.4 21.2 17.0 12.4 4.5 -0.6 10.4 DAYS WITH MINIMUM TEMP. >=21 0 0 0 0 1 8 24 19 0 0 0 0 52 DAYS WITH MINIMUM TEMP. <=-4 11 1 0 0 0 0 0 0 0 0 0 10 22 DAYS WITH FREEZING MIN.<= 0 21 14 6 0 0 0 0 0 0 0 6 20 67 TEMPERATURE RECORDS LOWEST(C) -10.0 -4.8 -2.6 3.4 8.2 14.4 18.0 18.0 12.6 8.2 -2.0 -8.0 -10.0 DAY 22 5 11 6 5 9 31 1 30 26 30 24 MAXIMUM AIR TEMPERATURE (C) 10.1 14.0 19.4 22.4 29.6 33.7 35.8 36.8 33.5 27.4 15.9 10.1 24.1 DAYS WITH MAXIMUM TEMP. >=30 0 0 0 2 17 28 31 31 27 7 0 0 143 DAYS WITH MAXIMUM TEMP. <= 0 0 0 0 0 0 0 0 0 0 0 0 0 0 TEMPERATURE RECORDS HIGHEST(C) 18.6 20.0 25.0 33.0 35.0 38.0 40.0 40.6 37.0 31.2 24.0 17.5 40.6 DAY 7 25 27 28 24 30 18 23 4 4 11 21 DIF. BETWEEN (MAX.-MIN.) (C) 11.5 12.9 14.9 11.6 14.6 14.4 14.4 15.6 16.5 15.0 11.4 10.7 13.7 MEAN DAILY TEMP. (MDT) (C) 4.3 7.6 12.0 16.6 22.3 26.5 28.6 29.0 25.3 19.9 10.2 4.7 17.2 COOLING DEG. DAYS(BASE 21 0C) 0.0 0.0 0.0 9.0 62.5 165.2 235.3 248.7 127.9 12.1 0.0 0.0 860.7 HEATING DEG. DAYS(BASE 18 0C) 423.9 292.5 187.4 75.2 3.4 0.0 0.0 0.0 0.0 9.6 232.7 411.3 1636.0 DEWPOINT (MEAN C) -5.5 -7.0 -7.1 1.3 -1.2 -3.2 0.6 1.3 3.0 -0.9 -1.5 -5.1 -2.1 MIXING RATIO (G/KG) 3.16 2.83 2.98 5.22 4.35 3.76 4.90 5.30 5.74 4.35 4.28 3.25 4.18 VAPOUR PRESSURE (HPA) 4.26 3.82 4.00 6.99 5.83 5.04 6.56 7.08 7.71 5.88 5.78 4.39 5.61 SATURATION DEF. (HPA) 5.25 8.61 13.29 15.02 27.00 37.02 39.41 41.65 32.68 22.45 8.63 5.27 21.36 RELATIVE HUMIDITY (MEAN %) 50 35 26 37 21 13 16 16 20 23 45 49 29 RELATIVE HUMIDITY (MAX. %) 71 53 42 56 36 21 25 25 28 33 65 68 44 RELATIVE HUMIDITY (MIN. %) 36 24 17 26 13 9 11 11 17 17 32 34 21 RELATIVE HUMIDITY (MEAN% 03UTC) 69 53 41 53 35 21 25 25 28 33 64 65 43 RELATIVE HUMIDITY (MEAN% 09UTC) 41 29 21 31 15 11 13 13 18 18 36 40 24 RELATIVE HUMIDITY (MEAN% 15UTC) 50 31 22 33 19 10 12 13 19 21 44 48 27 RH=0 => RELATIVE HUMIDITY < 0.5% AMOUNT OF PRECIPITATION MM. 26.0 7.2 5.3 22.5 0.4 0.0 0.0 0.0 0.0 0.0 21.3 9.0 91.7 DAYS WITH PRECIPITATION >=10 1 0 0 1 0 0 0 0 0 0 1 0 3 DAYS WITH PRECIPITATION >= 5 3 1 0 3 0 0 0 0 0 0 1 1 9 DAYS WITH PRECIPITATION >= 1 4 1 1 3 0 0 0 0 0 0 6 2 17 DAYS WITH PRECIPITATION 5 3 3 5 1 0 0 0 0 0 7 2 26 GREATEST DAILY PRECIPITATION 11.0 7.0 4.3 10.0 0.4 0.0 0.0 0.0 0.0 0.0 11.0 8.0 11.0 DAY 12 20 21 12 3 ** ** ** ** ** 7 2 DAY WITH THUNDER STORM 0 0 0 0 0 0 0 0 0 0 0 0 0 DAYS WITH SNOW OR SLEET 2 1 0 0 0 0 0 0 0 0 0 0 3 DAYS WITH DUST 0 0 0 0 0 0 0 0 0 0 0 1 1 WIND DIRECTION (PREVAILING) 225 270 225 270 225 270 90 90 90 270 90 225 270 PREVAILING WIND SPEED(KNOTS) 12.5 11.7 14.6 13.6 14.4 12.1 10.9 11.0 9.1 7.6 7.0 15.6 11.0 PREVAILING WIND PERCENT 11.6 15.7 21.3 17.3 12.9 10.7 12.9 22.6 18.0 12.3 8.0 11.0 11.1 CALMS PERCENT OF WIND 52.9 45.0 31.6 40.7 56.1 42.7 61.3 41.9 48.0 58.1 60.7 71.0 50.9 NO. OF WIND OBSERVATION 155 140 155 150 155 150 155 155 150 155 150 155 1825 VECTOR WIND DIRECTION (MEAN) 214 248 241 233 249 286 36 70 55 274 280 220 243 VECTOR WIND MAGNITUDE(KNOTS) 2.3 3.4 4.4 4.9 2.7 1.7 2.1 2.8 0.9 0.7 0.4 2.2 1.3 WIND STEADINESES (MEAN %) 45.1 50.0 50.6 63.6 50.9 27.0 52.5 47.5 20.9 23.3 14.3 61.1 24.5 WIND SPEED (MEAN KNOTS) 5.1 6.8 8.7 7.7 5.3 6.3 4.0 5.9 4.3 3.0 2.8 3.6 5.3 FASTEST WIND DIRECTION 210 270 240 170 250 250 70 60 180 330 230 220 220 FASTEST WIND SPEED (KNOTS) 23 25 29 29 25 29 23 23 23 27 27 33 33 DAY 7 27 20 3 16 6 21 11 11 22 13 21 DAYS WITH SKY CLEAR (0-2)/8 21 22 21 13 27 27 30 31 30 28 14 15 279 DAYS WITH P.CLOUDY (3-6)/8 8 4 6 12 4 3 1 0 0 3 12 9 62 DAYS WITH CLOUDY (7-8)/8 2 2 4 5 0 0 0 0 0 0 4 7 24 DAYS WITH VISIBILITY =< 2 KM 0 1 0 1 0 0 0 0 0 0 0 1 3 DURATION OF SUNSHINE HOURS 225.4 232.9 253.3 221.0 291.9 360.3 341.4 343.0 310.0 276.5 208.0 200.5 3264.2 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION NAEIN (40801) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 32 51 N LONGITUDE 53 5 E DATA PROCESSING CENTER ELEVATION 1549.0 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 843.7 843.5 842.3 840.2 840.5 839.0 839.1 838.4 843.3 845.6 846.4 843.2 842.1 MAX. QFE PRESSURE IN HPA 851.3 852.7 854.5 848.7 845.5 845.3 844.7 843.6 848.6 851.2 854.8 852.8 854.8 DAY-HOUR 26- 6 6- 6 11- 6 1- 6 17- 6 25- 6 29- 6 31- 6 22- 6 10- 6 18- 6 3- 6 MIN. QFE PRESSURE IN HPA 836.6 834.8 834.8 829.7 835.3 830.8 832.7 832.4 838.3 841.0 839.7 830.9 829.7 DAY-HOUR 8-12 25-12 22-12 3-12 4-12 20-15 24-15 17-15 18-12 21-12 12-12 21-12 MEAN QNH PRESSURE IN HPA 1016.7 1016.5 1015.1 1012.6 1012.9 1011.2 1011.4 1010.6 1016.3 1018.9 1019.8 1016.1 1014.8 MAX. QNH PRESSURE IN HPA 1025.5 1027.2 1029.3 1022.5 1018.8 1018.6 1017.9 1016.6 1022.4 1025.4 1029.6 1027.3 1029.6 DAY-HOUR 26- 6 6- 6 11- 6 1- 6 17- 6 25- 6 29- 6 31- 6 22- 6 10- 6 18- 6 3- 6 MIN. QNH PRESSURE IN HPA 1008.4 1006.4 1006.4 1000.4 1006.9 1001.7 1003.9 1003.6 1010.4 1013.6 1012.1 1001.8 1000.4 DAY-HOUR 8-12 25-12 22-12 3-12 4-12 20-15 24-15 17-15 18-12 21-12 12-12 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 843.7 843.5 842.6 840.6 841.1 839.7 839.9 839.1 843.7 845.9 846.6 843.2 842.5 MAX. QFE PRESSURE IN HPA 850.3 851.1 852.9 847.2 844.4 844.4 844.2 842.5 847.6 849.9 854.1 851.0 854.1 DAY 26 6 11 1 17 25 30 1 22 10 18 3 MIN. QFE PRESSURE IN HPA 836.7 837.5 836.5 832.1 837.4 833.7 835.8 834.0 839.7 842.4 841.2 833.1 832.1 DAY 12 25 29 4 13 21 25 18 18 22 13 22 MEAN QNH PRESSURE IN HPA 1016.7 1016.5 1015.4 1013.0 1013.7 1012.0 1012.3 1011.3 1016.7 1019.3 1020.1 1016.1 1015.3 MAX. QNH PRESSURE IN HPA 1024.4 1025.3 1027.4 1020.8 1017.5 1017.5 1017.3 1015.3 1021.2 1023.9 1028.8 1025.2 1028.8 DAY 26 6 11 1 17 25 30 1 22 10 18 3 MIN. QNH PRESSURE IN HPA 1008.6 1009.5 1008.3 1003.2 1009.4 1005.1 1007.5 1005.4 1012.1 1015.2 1013.8 1004.4 1003.2 DAY 12 25 29 4 13 21 25 18 18 22 13 22 MEAN QFF PRESSURE IN HPA 1017.9 1015.3 1011.3 1005.7 1003.0 998.4 997.6 996.4 1004.2 1010.6 1017.3 1017.0 1007.9 MAX. QFF PRESSURE IN HPA 1028.7 1027.2 1028.5 1017.4 1008.4 1005.1 1005.1 1002.4 1011.0 1014.2 1030.0 1027.5 1030.0 DAY 25 5 11 1 14 25 31 1 30 26 18 30 MIN. QFF PRESSURE IN HPA 1003.2 1004.4 1001.4 998.9 996.2 989.6 992.0 989.8 999.5 1006.4 1005.7 1001.9 989.6 DAY 8 25 28 4 20 19 25 18 18 22 12 22 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION NAEIN (40801) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 32 51 N LONGITUDE 53 5 E DATA PROCESSING CENTER ELEVATION 1549.0 M MEANS AND EXTREMES FOR THE YEAR 2002 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 0600 UTC. MEAN QFE PRESSURE IN HPA 844.8 844.8 843.6 841.4 841.7 840.3 840.5 839.7 844.7 847.0 847.6 844.4 843.4 MAX. QFE PRESSURE IN HPA 851.3 852.7 854.5 848.7 845.5 845.3 844.7 843.6 848.6 851.2 854.8 852.8 854.8 DAY 26 6 11 1 17 25 29 31 22 10 18 3 MIN. QFE PRESSURE IN HPA 838.3 837.9 838.0 832.4 837.6 834.0 836.7 834.9 841.0 844.0 842.5 834.9 832.4 DAY 8 25 21 4 21 20 25 17 10 22 12 21 MEAN QNH PRESSURE IN HPA 1018.0 1017.9 1016.6 1014.0 1014.4 1012.7 1013.0 1012.1 1017.8 1020.6 1021.3 1017.6 1016.3 MAX. QNH PRESSURE IN HPA 1025.5 1027.2 1029.3 1022.5 1018.8 1018.6 1017.9 1016.6 1022.4 1025.4 1029.6 1027.3 1029.6 DAY 26 6 11 1 17 25 29 31 22 10 18 3 MIN. QNH PRESSURE IN HPA 1010.4 1010.0 1010.1 1003.6 1009.6 1005.4 1008.6 1006.5 1013.6 1017.1 1015.3 1006.5 1003.6 DAY 8 25 21 4 21 20 25 17 10 22 12 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 844.0 844.0 842.8 840.5 840.8 839.5 839.7 839.0 843.8 845.9 846.5 843.3 842.5 MAX. QFE PRESSURE IN HPA 850.5 851.2 852.8 848.3 844.6 845.1 843.8 842.7 847.9 850.6 853.8 852.2 853.8 DAY 26 6 11 1 17 25 29 31 21 10 18 3 MIN. QFE PRESSURE IN HPA 837.6 837.0 836.9 832.1 836.7 833.0 835.5 834.2 840.3 842.8 841.4 833.6 832.1 DAY 8 25 28 3 13 20 24 17 10 21 12 21 MEAN QNH PRESSURE IN HPA 1017.0 1017.0 1015.6 1013.0 1013.4 1011.8 1012.1 1011.2 1016.9 1019.3 1020.0 1016.3 1015.3 MAX. QNH PRESSURE IN HPA 1024.6 1025.4 1027.3 1022.1 1017.8 1018.3 1016.8 1015.5 1021.6 1024.7 1028.5 1026.6 1028.5 DAY 26 6 11 1 17 25 29 31 21 10 18 3 MIN. QNH PRESSURE IN HPA 1009.6 1008.9 1008.8 1003.2 1008.6 1004.3 1007.2 1005.7 1012.8 1015.7 1014.0 1005.0 1003.2 DAY 8 25 28 3 13 20 24 17 10 21 12 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 842.7 842.4 841.1 839.2 839.3 838.0 838.0 837.4 842.2 844.5 845.4 842.3 841.0 MAX. QFE PRESSURE IN HPA 849.2 850.0 850.6 846.2 843.6 843.4 841.9 841.5 846.3 849.2 852.7 851.1 852.7 DAY 27 6 11 1 17 25 29 31 21 10 18 3 MIN. QFE PRESSURE IN HPA 836.6 834.8 834.8 829.7 835.3 831.6 833.7 832.6 838.3 841.0 839.7 830.9 829.7 DAY 8 25 22 3 4 20 24 17 18 21 12 21 MEAN QNH PRESSURE IN HPA 1015.5 1015.1 1013.7 1011.4 1011.6 1010.0 1010.1 1009.4 1015.0 1017.7 1018.7 1015.0 1013.6 MAX. QNH PRESSURE IN HPA 1023.1 1024.0 1024.7 1019.6 1016.6 1016.4 1014.6 1014.2 1019.7 1023.1 1027.2 1025.3 1027.2 DAY 27 6 11 1 17 25 29 31 21 10 18 3 MIN. QNH PRESSURE IN HPA 1008.4 1006.4 1006.4 1000.4 1006.9 1002.6 1005.1 1003.8 1010.4 1013.6 1012.1 1001.8 1000.4 DAY 8 25 22 3 4 20 24 17 18 21 12 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 NAEIN (40801) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 32 51 N LONGITUDE 53 5 E DATA PROCESSING CENTER ELEVATION 1549.0 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 843.3 843.0 841.5 839.3 839.4 837.4 837.6 837.1 842.2 844.7 845.8 842.8 841.2 MAX. QFE PRESSURE IN HPA 850.3 850.4 850.6 846.4 843.2 842.4 841.7 841.5 846.6 849.2 852.7 851.4 852.7 DAY 27 6 10 1 17 25 30 31 29 10 18 3 MIN. QFE PRESSURE IN HPA 837.0 836.3 834.8 830.6 835.9 830.8 832.7 832.4 838.3 841.1 840.0 832.2 830.6 DAY 8 25 22 3 12 20 24 17 18 21 12 21 MEAN QNH PRESSURE IN HPA 1016.2 1015.9 1014.1 1011.6 1011.7 1009.4 1009.6 1009.0 1015.0 1017.9 1019.2 1015.7 1013.8 MAX. QNH PRESSURE IN HPA 1024.4 1024.5 1024.7 1019.9 1016.1 1015.2 1014.4 1014.2 1020.1 1023.1 1027.2 1025.7 1027.2 DAY 27 6 10 1 17 25 30 31 29 10 18 3 MIN. QNH PRESSURE IN HPA 1008.9 1008.1 1006.4 1001.5 1007.6 1001.7 1003.9 1003.6 1010.4 1013.7 1012.4 1003.3 1001.5 DAY 8 25 22 3 12 20 24 17 18 21 12 21 MEAN QFF PRESSURE IN HPA 1017.5 1014.6 1009.9 1004.2 1000.9 995.7 995.0 994.1 1002.3 1009.1 1016.6 1016.6 1006.4 MAX. QFF PRESSURE IN HPA 1026.2 1025.4 1024.6 1015.2 1007.0 1003.1 1001.8 1000.3 1010.3 1012.9 1028.0 1026.9 1028.0 DAY 27 5 11 1 2 24 30 31 29 10 18 4 MIN. QFF PRESSURE IN HPA 1005.0 1002.9 1000.1 995.6 995.1 987.3 989.2 987.9 997.2 1005.0 1004.0 1000.2 987.3 DAY 7 25 28 3 20 20 24 17 10 14 12 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 NAEIN (40801) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 32 51 N LONGITUDE 53 5 E DATA PROCESSING CENTER ELEVATION 1549.0 M MEANS AND EXTREMES FOR THE YEAR 2003 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AIR TEMPERATURE (C) 6.3 9.4 11.9 19.2 22.2 29.6 34.3 30.1 26.2 22.1 11.3 6.3 19.1 MINIMUN AIR TEMPERATURE (C) -0.4 1.3 3.8 10.7 12.6 19.3 24.2 20.0 15.7 12.5 2.4 0.0 10.2 DAYS WITH MINIMUM TEMP. >=21 0 0 0 0 0 7 31 6 0 0 0 0 44 DAYS WITH MINIMUM TEMP. <=-4 3 1 2 0 0 0 0 0 0 0 2 7 15 DAYS WITH FREEZING MIN.<= 0 15 12 7 0 0 0 0 0 0 0 10 16 60 TEMPERATURE RECORDS LOWEST(C) -13.0 -7.2 -6.8 3.2 5.4 14.6 21.0 15.4 11.4 9.6 -5.0 -10.4 -13.0 DAY 20 18 3 2 2 7 2 31 28 24 25 14 MAXIMUM AIR TEMPERATURE (C) 11.0 14.6 16.8 24.0 26.8 34.6 39.0 35.0 31.2 26.9 16.2 10.6 23.9 DAYS WITH MAXIMUM TEMP. >=30 0 0 0 3 4 29 31 31 21 3 0 0 122 DAYS WITH MAXIMUM TEMP. <= 0 0 0 0 0 0 0 0 0 0 0 0 0 0 TEMPERATURE RECORDS HIGHEST(C) 21.0 20.6 23.4 30.6 31.0 40.5 41.0 37.6 35.2 30.8 24.4 20.0 41.0 DAY 13 20 19 10 22 24 29 7 9 2 1 18 DIF. BETWEEN (MAX.-MIN.) (C) 11.4 13.3 13.0 13.3 14.2 15.3 14.8 15.0 15.5 14.4 13.8 10.6 13.7 MEAN DAILY TEMP. (MDT) (C) 5.3 8.0 10.3 17.4 19.7 26.9 31.6 27.5 23.4 19.7 9.3 5.3 17.0 COOLING DEG. DAYS(BASE 21 0C) 0.0 0.0 0.0 9.2 16.6 178.4 328.3 201.3 81.1 9.1 0.0 0.0 824.1 HEATING DEG. DAYS(BASE 18 0C) 394.0 281.0 238.0 55.8 17.2 0.0 0.0 0.0 0.0 0.7 260.3 393.2 1640.2 DEWPOINT (MEAN C) -6.7 -6.9 -4.4 0.2 -1.9 2.0 1.4 4.6 -1.0 -5.0 -6.6 -3.8 -2.3 MIXING RATIO (G/KG) 2.98 2.92 3.55 4.91 4.25 5.41 5.27 6.53 4.38 3.23 3.04 3.65 4.18 VAPOUR PRESSURE (HPA) 4.01 3.91 4.76 6.59 5.71 7.22 7.01 8.72 5.89 4.37 4.11 4.92 5.60 SATURATION DEF. (HPA) 6.23 8.53 10.00 17.01 22.26 36.06 48.66 35.45 29.75 23.22 10.21 5.27 21.05 RELATIVE HUMIDITY (MEAN %) 48 35 36 33 22 18 14 21 18 17 31 53 29 RELATIVE HUMIDITY (MAX. %) 62 54 55 54 35 28 21 30 28 27 46 68 42 RELATIVE HUMIDITY (MIN. %) 36 21 24 22 16 13 10 17 13 11 21 42 21 RELATIVE HUMIDITY (MEAN% 03UTC) 59 53 52 53 35 28 21 30 28 27 45 65 41 RELATIVE HUMIDITY (MEAN% 09UTC) 41 27 29 26 17 16 12 19 15 13 24 47 24 RELATIVE HUMIDITY (MEAN% 15UTC) 48 30 30 29 19 14 11 18 15 16 30 53 26 RH=0 => RELATIVE HUMIDITY < 0.5% AMOUNT OF PRECIPITATION MM. 25.3 2.5 3.0 15.0 1.6 0.0 0.0 0.0 0.0 0.0 0.0 12.0 59.4 DAYS WITH PRECIPITATION >=10 0 0 0 0 0 0 0 0 0 0 0 0 0 DAYS WITH PRECIPITATION >= 5 3 0 0 1 0 0 0 0 0 0 0 0 4 DAYS WITH PRECIPITATION >= 1 6 1 1 4 1 0 0 0 0 0 0 5 18 DAYS WITH PRECIPITATION 7 4 4 5 2 0 0 0 0 0 0 6 28 GREATEST DAILY PRECIPITATION 7.0 1.0 1.9 7.0 1.4 0.0 0.0 0.0 0.0 0.0 0.0 4.0 7.0 DAY 19 5 26 23 29 ** ** ** ** ** ** 6 DAY WITH THUNDER STORM 0 0 0 0 0 0 0 0 0 0 0 0 0 DAYS WITH SNOW OR SLEET 2 0 0 0 0 0 0 0 0 0 0 1 3 DAYS WITH DUST 0 0 0 0 0 0 0 0 0 0 0 0 0 WIND DIRECTION (PREVAILING) 270 225 270 225 90 270 90 90 90 270 90 270 270 PREVAILING WIND SPEED(KNOTS) 10.0 16.3 14.1 16.2 11.0 11.7 9.2 10.9 8.8 9.4 8.8 7.2 10.3 PREVAILING WIND PERCENT 12.9 18.6 17.4 11.3 11.0 12.0 15.5 14.2 16.7 14.2 8.7 7.7 9.8 CALMS PERCENT OF WIND 68.4 47.9 53.5 54.7 55.5 51.3 47.1 58.1 44.7 47.7 57.3 66.5 54.5 NO. OF WIND OBSERVATION 155 140 155 150 155 150 155 155 150 155 150 155 1825 VECTOR WIND DIRECTION (MEAN) 244 227 255 220 11 340 56 44 33 254 270 226 270 VECTOR WIND MAGNITUDE(KNOTS) 2.2 4.2 3.1 2.4 1.5 1.3 2.1 2.4 2.1 1.8 0.4 0.7 0.6 WIND STEADINESES (MEAN %) 66.7 61.8 50.8 42.9 32.6 24.1 43.7 61.5 43.7 36.0 10.5 21.9 12.5 WIND SPEED (MEAN KNOTS) 3.3 6.8 6.1 5.6 4.6 5.4 4.8 3.9 4.8 5.0 3.8 3.2 4.8 FASTEST WIND DIRECTION 210 220 290 230 270 350 190 90 210 260 210 240 290 FASTEST WIND SPEED (KNOTS) 27 27 31 31 31 27 19 19 17 19 21 23 31 DAY 28 14 8 1 8 25 2 28 18 27 10 20 DAYS WITH SKY CLEAR (0-2)/8 15 17 15 8 16 26 29 31 30 23 21 16 247 DAYS WITH P.CLOUDY (3-6)/8 7 9 10 11 15 3 2 0 0 8 7 7 79 DAYS WITH CLOUDY (7-8)/8 9 2 6 11 0 1 0 0 0 0 2 8 39 DAYS WITH VISIBILITY =< 2 KM 2 0 0 0 0 0 0 0 0 0 0 6 8 DURATION OF SUNSHINE HOURS 194.2 225.7 237.1 201.8 301.4 333.0 333.1 357.9 324.6 269.2 247.5 186.1 3211.6 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION NAEIN (40801) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 32 51 N LONGITUDE 53 5 E DATA PROCESSING CENTER ELEVATION 1549.0 M MEANS AND EXTREMES FOR THE YEAR 2003 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL MEAN QFE PRESSURE IN HPA 843.5 839.8 840.9 842.2 842.7 838.1 835.6 840.4 842.2 845.3 846.1 846.1 841.9 MAX. QFE PRESSURE IN HPA 850.9 847.7 850.2 849.2 849.6 843.8 842.4 844.3 849.4 850.6 855.5 854.6 855.5 DAY-HOUR 12- 6 6- 6 2- 6 8- 6 2- 6 2- 3 3- 6 4- 6 27- 6 15- 6 25- 6 12- 6 MIN. QFE PRESSURE IN HPA 829.7 828.6 830.8 836.6 836.4 829.5 830.2 836.0 836.8 840.4 838.0 837.3 828.6 DAY-HOUR 28-15 19-12 26-15 17-12 29-12 30-15 25-15 1- 3 7-15 27-15 14-12 6-12 MEAN QNH PRESSURE IN HPA 1016.4 1012.2 1013.5 1014.9 1015.6 1010.2 1007.3 1012.8 1014.9 1018.5 1019.5 1019.5 1014.6 MAX. QNH PRESSURE IN HPA 1025.1 1021.4 1024.3 1023.1 1023.6 1016.8 1015.2 1017.4 1023.3 1024.7 1030.4 1029.4 1030.4 DAY-HOUR 12- 6 6- 6 2- 6 8- 6 2- 6 2- 3 3- 6 4- 6 27- 6 15- 6 25- 6 12- 6 MIN. QNH PRESSURE IN HPA 1000.4 999.1 1001.7 1008.4 1008.2 1000.2 1001.0 1007.7 1008.7 1012.9 1010.1 1009.3 999.1 DAY-HOUR 28-15 19-12 26-15 17-12 29-12 30-15 25-15 1- 3 7-15 27-15 14-12 6-12 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY-HOUR **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY-HOUR **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** PRESSURE AT HOUR 0000 UTC. MEAN QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** PRESSURE AT HOUR 0300 UTC. MEAN QFE PRESSURE IN HPA 843.5 840.0 841.2 842.6 843.5 838.9 836.1 840.9 842.6 845.6 846.2 845.9 842.2 MAX. QFE PRESSURE IN HPA 849.7 845.5 849.4 849.0 848.7 843.8 841.8 843.5 848.3 849.8 853.4 853.4 853.4 DAY 12 7 3 8 2 2 3 4 27 16 25 12 MIN. QFE PRESSURE IN HPA 835.3 830.8 833.6 837.6 838.7 832.0 831.4 836.0 838.0 841.7 840.5 840.2 830.8 DAY 29 19 27 14 29 30 1 1 7 27 14 6 MEAN QNH PRESSURE IN HPA 1016.5 1012.4 1013.8 1015.4 1016.4 1011.1 1007.8 1013.4 1015.5 1018.9 1019.7 1019.3 1015.0 MAX. QNH PRESSURE IN HPA 1023.7 1018.8 1023.3 1022.9 1022.5 1016.8 1014.5 1016.5 1022.1 1023.8 1028.0 1028.0 1028.0 DAY 12 7 3 8 2 2 3 4 27 16 25 12 MIN. QNH PRESSURE IN HPA 1006.9 1001.7 1005.0 1009.6 1010.9 1003.1 1002.4 1007.7 1010.1 1014.4 1013.0 1012.6 1001.7 DAY 29 19 27 14 29 30 1 1 7 27 14 6 MEAN QFF PRESSURE IN HPA 1017.0 1010.8 1010.7 1007.9 1007.2 997.2 991.3 999.3 1004.2 1010.2 1017.6 1019.8 1007.8 MAX. QFF PRESSURE IN HPA 1022.7 1019.9 1028.1 1014.9 1017.9 1004.7 999.2 1003.8 1013.8 1016.0 1030.9 1034.6 1034.6 DAY 21 7 3 3 2 1 3 31 27 16 25 12 MIN. QFF PRESSURE IN HPA 1003.7 1000.7 999.4 999.7 1001.0 987.2 985.7 990.9 998.4 1005.4 1008.2 1008.1 985.7 DAY 16 19 27 28 23 30 30 1 10 2 14 19 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION NAEIN (40801) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 32 51 N LONGITUDE 53 5 E DATA PROCESSING CENTER ELEVATION 1549.0 M MEANS AND EXTREMES FOR THE YEAR 2003 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 0600 UTC. MEAN QFE PRESSURE IN HPA 844.7 841.2 842.5 843.3 844.0 839.4 836.6 841.6 843.5 846.6 847.4 847.2 843.2 MAX. QFE PRESSURE IN HPA 850.9 847.7 850.2 849.2 849.6 843.7 842.4 844.3 849.4 850.6 855.5 854.6 855.5 DAY 12 6 2 8 2 3 3 4 27 15 25 12 MIN. QFE PRESSURE IN HPA 837.6 831.3 835.0 838.3 839.0 832.3 832.4 836.9 838.8 842.4 841.5 840.0 831.3 DAY 28 19 13 14 29 30 1 1 7 27 14 6 MEAN QNH PRESSURE IN HPA 1017.8 1013.8 1015.3 1016.3 1017.1 1011.7 1008.5 1014.2 1016.5 1020.0 1021.1 1020.8 1016.1 MAX. QNH PRESSURE IN HPA 1025.1 1021.4 1024.3 1023.1 1023.6 1016.7 1015.2 1017.4 1023.3 1024.7 1030.4 1029.4 1030.4 DAY 12 6 2 8 2 3 3 4 27 15 25 12 MIN. QNH PRESSURE IN HPA 1009.6 1002.3 1006.6 1010.4 1011.2 1003.4 1003.6 1008.8 1011.0 1015.2 1014.2 1012.4 1002.3 DAY 28 19 13 14 29 30 1 1 7 27 14 6 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** PRESSURE AT HOUR 0900 UTC. MEAN QFE PRESSURE IN HPA 843.7 840.2 841.6 842.6 843.1 838.6 836.1 841.0 842.7 845.6 846.3 846.2 842.3 MAX. QFE PRESSURE IN HPA 849.9 846.8 849.9 848.1 849.0 842.8 842.1 843.7 848.5 850.2 855.0 853.2 855.0 DAY 12 6 2 8 2 3 3 4 23 15 25 12 MIN. QFE PRESSURE IN HPA 835.1 829.6 834.5 837.8 838.2 831.7 832.2 836.7 838.2 841.6 839.6 839.3 829.6 DAY 28 19 13 14 29 30 26 1 7 27 14 6 MEAN QNH PRESSURE IN HPA 1016.7 1012.7 1014.2 1015.4 1016.0 1010.8 1007.9 1013.5 1015.5 1019.0 1019.7 1019.6 1015.1 MAX. QNH PRESSURE IN HPA 1023.9 1020.3 1023.9 1021.8 1022.9 1015.7 1014.9 1016.7 1022.3 1024.3 1029.9 1027.8 1029.9 DAY 12 6 2 8 2 3 3 4 23 15 25 12 MIN. QNH PRESSURE IN HPA 1006.7 1000.3 1006.0 1009.8 1010.3 1002.7 1003.3 1008.6 1010.3 1014.3 1011.9 1011.6 1000.3 DAY 28 19 13 14 29 30 26 1 7 27 14 6 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** PRESSURE AT HOUR 1200 UTC. MEAN QFE PRESSURE IN HPA 842.5 838.6 839.6 841.1 841.7 837.0 834.8 839.4 841.0 844.2 845.1 845.3 840.9 MAX. QFE PRESSURE IN HPA 848.7 845.4 848.9 847.4 847.4 841.4 840.2 842.3 847.1 849.0 854.0 851.6 854.0 DAY 12 12 2 8 2 3 3 11 27 15 25 12 MIN. QFE PRESSURE IN HPA 830.7 828.6 831.9 836.6 836.4 830.1 831.3 836.3 837.0 840.8 838.0 837.3 828.6 DAY 28 19 26 17 29 30 26 1 7 26 14 6 MEAN QNH PRESSURE IN HPA 1015.3 1010.8 1012.0 1013.7 1014.4 1008.9 1006.4 1011.7 1013.6 1017.3 1018.3 1018.5 1013.4 MAX. QNH PRESSURE IN HPA 1022.5 1018.7 1022.8 1021.0 1021.0 1014.0 1012.6 1015.1 1020.7 1022.9 1028.7 1025.9 1028.7 DAY 12 12 2 8 2 3 3 11 27 15 25 12 MIN. QNH PRESSURE IN HPA 1001.6 999.1 1003.0 1008.4 1008.2 1000.9 1002.3 1008.1 1008.9 1013.3 1010.1 1009.3 999.1 DAY 28 19 26 17 29 30 26 1 7 26 14 6 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION NAEIN (40801) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 32 51 N LONGITUDE 53 5 E DATA PROCESSING CENTER ELEVATION 1549.0 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 843.0 839.0 839.8 841.4 841.5 836.5 834.3 839.0 841.0 844.4 845.7 846.0 841.0 MAX. QFE PRESSURE IN HPA 849.4 846.1 849.6 847.1 847.2 841.4 839.5 841.9 846.9 849.4 854.8 852.4 854.8 DAY 12 6 2 8 2 3 3 11 27 15 25 11 MIN. QFE PRESSURE IN HPA 829.7 830.2 830.8 837.4 837.2 829.5 830.2 836.1 836.8 840.4 838.6 837.3 829.5 DAY 28 19 26 14 23 30 25 1 7 27 14 6 MEAN QNH PRESSURE IN HPA 1015.9 1011.3 1012.2 1014.0 1014.2 1008.4 1005.8 1011.2 1013.6 1017.5 1019.0 1019.4 1013.5 MAX. QNH PRESSURE IN HPA 1023.3 1019.5 1023.6 1020.7 1020.8 1014.0 1011.8 1014.6 1020.4 1023.3 1029.6 1026.8 1029.6 DAY 12 6 2 8 2 3 3 11 27 15 25 11 MIN. QNH PRESSURE IN HPA 1000.4 1001.0 1001.7 1009.4 1009.1 1000.2 1001.0 1007.9 1008.7 1012.9 1010.8 1009.3 1000.2 DAY 28 19 26 14 23 30 25 1 7 27 14 6 MEAN QFF PRESSURE IN HPA 1016.2 1009.7 1008.8 1006.4 1004.9 994.3 989.2 997.0 1002.3 1008.8 1017.0 1019.9 1006.2 MAX. QFF PRESSURE IN HPA 1022.9 1019.6 1027.7 1012.4 1015.9 1001.7 996.4 1001.4 1012.3 1015.3 1032.4 1033.6 1033.6 DAY 21 12 2 3 2 1 3 30 27 15 25 12 MIN. QFF PRESSURE IN HPA 997.6 997.0 994.3 998.8 998.3 984.9 984.0 991.4 995.6 1004.3 1006.8 1007.2 984.0 DAY 28 20 26 28 23 30 30 1 10 2 14 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 NAEIN (40801) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 32 51 N LONGITUDE 53 5 E DATA PROCESSING CENTER ELEVATION 1549.0 M MEANS AND EXTREMES FOR THE YEAR 2004 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AIR TEMPERATURE (C) 6.8 10.8 14.6 17.2 23.7 29.7 29.9 31.5 25.9 20.1 13.7 5.0 19.1 MINIMUN AIR TEMPERATURE (C) 1.1 2.5 6.7 9.3 14.4 19.5 20.5 20.8 15.5 10.3 5.8 -1.1 10.4 DAYS WITH MINIMUM TEMP. >=21 0 0 0 0 0 8 16 14 0 0 0 0 38 DAYS WITH MINIMUM TEMP. <=-4 2 0 0 0 0 0 0 0 0 0 1 8 11 DAYS WITH FREEZING MIN.<= 0 13 10 3 0 0 0 0 0 0 0 4 18 48 TEMPERATURE RECORDS LOWEST(C) -4.4 -2.4 -2.6 3.0 9.4 14.4 15.4 18.0 9.0 5.4 -4.8 -6.4 -6.4 DAY 1 4 16 18 15 1 22 28 28 29 29 4 MAXIMUM AIR TEMPERATURE (C) 11.4 15.9 19.0 22.0 28.9 34.5 34.7 36.7 30.7 25.1 18.6 9.2 23.9 DAYS WITH MAXIMUM TEMP. >=30 0 0 0 0 11 28 28 31 15 2 0 0 115 DAYS WITH MAXIMUM TEMP. <= 0 0 0 0 0 0 0 0 0 0 0 0 0 0 TEMPERATURE RECORDS HIGHEST(C) 16.0 25.0 27.4 28.0 32.4 37.0 38.6 40.6 36.2 30.6 23.6 16.0 40.6 DAY 6 14 6 22 21 25 27 12 7 13 2 13 DIF. BETWEEN (MAX.-MIN.) (C) 10.3 13.4 12.3 12.7 14.5 15.0 14.2 15.9 15.2 14.8 12.8 10.3 13.5 MEAN DAILY TEMP. (MDT) (C) 6.2 9.2 12.9 15.6 21.6 27.0 27.6 28.8 23.1 17.7 12.2 4.0 17.2 COOLING DEG. DAYS(BASE 21 0C) 0.0 0.0 0.0 1.9 41.9 179.0 205.5 240.8 78.6 2.6 0.0 0.0 750.3 HEATING DEG. DAYS(BASE 18 0C) 365.2 255.2 165.2 81.2 4.9 0.0 0.0 0.0 0.0 39.6 174.7 432.6 1518.6 DEWPOINT (MEAN C) -2.1 -8.2 -4.0 -2.9 -0.3 -0.8 3.7 2.6 0.4 -3.4 -2.8 -6.7 -2.0 MIXING RATIO (G/KG) 4.13 2.71 3.57 3.90 4.65 4.47 6.18 5.83 4.85 3.65 4.02 2.99 4.25 VAPOUR PRESSURE (HPA) 5.55 3.65 4.81 5.24 6.23 5.98 8.25 7.77 6.52 4.94 5.43 4.02 5.70 SATURATION DEF. (HPA) 4.63 9.99 13.25 15.31 24.37 37.12 35.49 40.42 28.61 19.84 11.07 5.08 20.43 RELATIVE HUMIDITY (MEAN %) 58 30 35 29 23 15 21 17 20 22 35 48 29 RELATIVE HUMIDITY (MAX. %) 77 49 53 50 40 24 31 25 28 34 51 67 44 RELATIVE HUMIDITY (MIN. %) 40 19 26 18 15 11 16 13 16 16 25 32 21 RELATIVE HUMIDITY (MEAN% 03UTC) 73 46 52 48 39 24 31 25 28 34 50 65 43 RELATIVE HUMIDITY (MEAN% 09UTC) 48 23 29 22 19 13 18 15 18 17 28 38 24 RELATIVE HUMIDITY (MEAN% 15UTC) 60 27 32 25 19 13 18 14 18 20 33 47 27 RH=0 => RELATIVE HUMIDITY < 0.5% AMOUNT OF PRECIPITATION MM. 35.8 3.0 21.6 3.0 2.0 0.0 6.0 0.0 0.0 0.0 3.6 16.1 91.1 DAYS WITH PRECIPITATION >=10 1 0 0 0 0 0 0 0 0 0 0 0 1 DAYS WITH PRECIPITATION >= 5 3 0 3 0 0 0 0 0 0 0 0 1 7 DAYS WITH PRECIPITATION >= 1 7 1 3 3 1 0 2 0 0 0 2 3 22 DAYS WITH PRECIPITATION 11 2 7 4 1 0 2 0 0 0 3 9 39 GREATEST DAILY PRECIPITATION 11.0 3.0 8.0 1.0 2.0 0.0 4.0 0.0 0.0 0.0 2.0 7.0 11.0 DAY 8 7 15 4 5 ** 13 ** ** ** 14 15 DAY WITH THUNDER STORM 0 0 0 0 0 0 1 0 0 0 0 0 1 DAYS WITH SNOW OR SLEET 1 0 0 0 0 0 0 0 0 0 0 1 2 DAYS WITH DUST 0 0 0 1 0 1 1 0 0 1 1 0 5 WIND DIRECTION (PREVAILING) 270 225 270 225 270 45 90 90 45 45 270 90 90 PREVAILING WIND SPEED(KNOTS) 8.3 14.2 9.5 16.5 11.6 10.5 9.5 9.2 9.0 7.5 8.6 6.8 8.7 PREVAILING WIND PERCENT 9.0 17.9 8.4 10.7 13.5 19.3 19.4 24.5 22.0 14.8 18.0 12.9 11.6 CALMS PERCENT OF WIND 58.1 47.6 58.7 67.3 47.7 40.0 42.6 31.0 34.7 32.9 30.7 40.0 44.3 NO. OF WIND OBSERVATION 155 145 155 150 155 150 155 155 150 155 150 155 1830 VECTOR WIND DIRECTION (MEAN) 204 213 235 232 234 11 37 68 37 344 231 213 248 VECTOR WIND MAGNITUDE(KNOTS) 1.2 3.9 1.0 2.1 2.4 2.3 2.5 2.4 3.2 1.0 2.7 0.8 0.3 WIND STEADINESES (MEAN %) 27.9 62.9 24.4 50.0 38.1 39.7 46.3 37.5 55.2 17.5 40.3 17.0 5.5 WIND SPEED (MEAN KNOTS) 4.3 6.2 4.1 4.2 6.3 5.8 5.4 6.4 5.8 5.7 6.7 4.7 5.5 FASTEST WIND DIRECTION 190 200 190 240 210 330 300 210 70 220 190 200 240 FASTEST WIND SPEED (KNOTS) 19 27 25 31 29 17 19 16 14 21 19 23 31 DAY 3 11 14 17 17 18 12 9 12 22 23 16 DAYS WITH SKY CLEAR (0-2)/8 13 20 11 10 22 22 16 28 28 27 15 16 228 DAYS WITH P.CLOUDY (3-6)/8 14 9 14 14 8 8 15 3 2 4 13 8 112 DAYS WITH CLOUDY (7-8)/8 4 0 6 6 1 0 0 0 0 0 2 7 26 DAYS WITH VISIBILITY =< 2 KM 2 0 2 0 0 0 0 0 0 0 0 2 6 DURATION OF SUNSHINE HOURS 196.8 237.6 209.0 225.3 304.3 326.8 313.4 347.1 314.9 291.4 221.8 190.6 3179.0 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION NAEIN (40801) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 32 51 N LONGITUDE 53 5 E DATA PROCESSING CENTER ELEVATION 1549.0 M MEANS AND EXTREMES FOR THE YEAR 2004 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL MEAN QFE PRESSURE IN HPA 841.3 842.9 844.1 841.4 840.2 839.1 839.5 838.9 844.1 847.4 845.0 844.0 842.3 MAX. QFE PRESSURE IN HPA 847.9 849.5 851.2 847.3 845.3 846.1 845.6 844.4 849.8 852.4 849.9 854.1 854.1 DAY-HOUR 12- 6 10- 6 9- 6 12- 6 18- 6 6- 6 18- 6 18- 6 27- 6 27- 6 1- 6 4- 6 MIN. QFE PRESSURE IN HPA 833.6 834.6 835.0 830.0 829.1 832.3 831.5 832.5 838.6 841.0 835.1 836.2 829.1 DAY-HOUR 27- 3 15-12 31-12 17- 9 13-12 17-15 10-15 4-15 11-15 3-12 23-12 16-12 MEAN QNH PRESSURE IN HPA 1014.0 1015.8 1017.2 1014.0 1012.6 1011.4 1011.8 1011.2 1017.2 1021.0 1018.2 1017.0 1015.1 MAX. QNH PRESSURE IN HPA 1021.6 1023.5 1025.4 1020.9 1018.6 1019.5 1018.9 1017.5 1023.8 1026.8 1023.9 1028.8 1028.8 DAY-HOUR 12- 6 10- 6 9- 6 12- 6 18- 6 6- 6 18- 6 18- 6 27- 6 27- 6 1- 6 4- 6 MIN. QNH PRESSURE IN HPA 1005.0 1006.1 1006.6 1000.8 999.7 1003.4 1002.5 1003.7 1010.8 1013.6 1006.7 1008.0 999.7 DAY-HOUR 27- 3 15-12 31-12 17- 9 13-12 17-15 10-15 4-15 11-15 3-12 23-12 16-12 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY-HOUR **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY-HOUR **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** PRESSURE AT HOUR 0000 UTC. MEAN QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** PRESSURE AT HOUR 0300 UTC. MEAN QFE PRESSURE IN HPA 841.3 842.9 844.2 841.6 840.9 839.8 839.9 839.3 844.3 847.5 844.9 843.8 842.5 MAX. QFE PRESSURE IN HPA 847.7 848.6 850.0 846.4 844.7 845.7 844.6 843.6 849.2 851.4 849.0 853.5 853.5 DAY 12 10 24 29 18 6 18 18 27 27 29 4 MIN. QFE PRESSURE IN HPA 833.6 835.8 838.0 832.5 832.7 834.2 835.6 835.2 839.6 843.6 837.0 837.1 832.5 DAY 27 15 15 17 13 18 11 4 12 3 24 16 MEAN QNH PRESSURE IN HPA 1013.9 1015.8 1017.3 1014.3 1013.5 1012.1 1012.3 1011.6 1017.4 1021.1 1018.1 1016.8 1015.4 MAX. QNH PRESSURE IN HPA 1021.4 1022.4 1024.0 1019.9 1017.9 1019.0 1017.8 1016.6 1023.1 1025.7 1022.9 1028.1 1028.1 DAY 12 10 24 29 18 6 18 18 27 27 29 4 MIN. QNH PRESSURE IN HPA 1005.0 1007.5 1010.1 1003.7 1003.9 1005.7 1007.3 1006.8 1011.9 1016.6 1008.9 1009.0 1003.7 DAY 27 15 15 17 13 18 11 4 12 3 24 16 MEAN QFF PRESSURE IN HPA 1013.8 1013.7 1012.7 1007.8 1003.0 998.3 998.1 996.8 1006.3 1013.8 1014.2 1018.3 1008.1 MAX. QFF PRESSURE IN HPA 1024.7 1021.7 1022.3 1014.7 1008.0 1006.7 1005.6 1003.4 1014.7 1020.6 1026.1 1032.4 1032.4 DAY 1 10 22 11 18 1 18 30 30 27 29 4 MIN. QFF PRESSURE IN HPA 1002.4 999.3 1003.1 994.6 991.9 990.0 992.1 991.0 998.7 1007.9 1002.7 1006.8 990.0 DAY 27 15 31 17 13 18 10 12 12 4 23 15 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION NAEIN (40801) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 32 51 N LONGITUDE 53 5 E DATA PROCESSING CENTER ELEVATION 1549.0 M MEANS AND EXTREMES FOR THE YEAR 2004 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 0600 UTC. MEAN QFE PRESSURE IN HPA 842.4 844.0 845.4 842.5 841.5 840.4 840.6 840.1 845.5 848.6 846.2 845.1 843.5 MAX. QFE PRESSURE IN HPA 847.9 849.5 851.2 847.3 845.3 846.1 845.6 844.4 849.8 852.4 849.9 854.1 854.1 DAY 12 10 9 12 18 6 18 18 27 27 1 4 MIN. QFE PRESSURE IN HPA 834.6 837.0 838.5 830.5 832.9 834.8 835.6 835.8 841.0 844.0 838.6 838.0 830.5 DAY 27 2 31 17 13 18 10 4 12 3 23 16 MEAN QNH PRESSURE IN HPA 1015.2 1017.1 1018.7 1015.3 1014.2 1012.8 1013.1 1012.5 1018.8 1022.4 1019.6 1018.3 1016.5 MAX. QNH PRESSURE IN HPA 1021.6 1023.5 1025.4 1020.9 1018.6 1019.5 1018.9 1017.5 1023.8 1026.8 1023.9 1028.8 1028.8 DAY 12 10 9 12 18 6 18 18 27 27 1 4 MIN. QNH PRESSURE IN HPA 1006.1 1008.9 1010.7 1001.4 1004.1 1006.4 1007.3 1007.5 1013.6 1017.1 1010.8 1010.1 1001.4 DAY 27 2 31 17 13 18 10 4 12 3 23 16 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** PRESSURE AT HOUR 0900 UTC. MEAN QFE PRESSURE IN HPA 841.5 843.5 844.7 841.7 840.5 839.6 840.0 839.7 844.7 847.7 845.3 844.3 842.8 MAX. QFE PRESSURE IN HPA 846.6 849.2 850.4 846.8 843.8 845.5 845.2 843.8 849.0 851.9 849.2 854.0 854.0 DAY 12 10 23 12 27 6 18 18 25 27 1 3 MIN. QFE PRESSURE IN HPA 834.8 836.8 837.7 830.0 831.0 834.8 834.0 834.9 840.6 842.5 837.3 837.0 830.0 DAY 27 15 31 17 13 17 10 4 12 3 23 16 MEAN QNH PRESSURE IN HPA 1014.2 1016.4 1017.8 1014.3 1013.0 1012.0 1012.4 1012.0 1017.9 1021.4 1018.5 1017.4 1015.6 MAX. QNH PRESSURE IN HPA 1020.1 1023.1 1024.5 1020.3 1016.8 1018.8 1018.5 1016.8 1022.9 1026.2 1023.1 1028.7 1028.7 DAY 12 10 23 12 27 6 18 18 25 27 1 3 MIN. QNH PRESSURE IN HPA 1006.4 1008.7 1009.7 1000.8 1001.9 1006.4 1005.4 1006.5 1013.1 1015.3 1009.3 1008.9 1000.8 DAY 27 15 31 17 13 17 10 4 12 3 23 16 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** PRESSURE AT HOUR 1200 UTC. MEAN QFE PRESSURE IN HPA 840.5 841.9 843.2 840.6 839.1 838.3 838.7 838.0 843.2 846.4 843.9 843.1 841.4 MAX. QFE PRESSURE IN HPA 846.0 848.1 849.0 846.6 843.3 845.0 843.8 842.1 848.1 850.2 848.1 853.1 853.1 DAY 12 10 23 11 18 6 18 30 27 27 30 3 MIN. QFE PRESSURE IN HPA 834.2 834.6 835.0 830.5 829.1 833.6 832.4 833.6 839.0 841.0 835.1 836.2 829.1 DAY 27 15 31 17 13 17 10 4 11 3 23 16 MEAN QNH PRESSURE IN HPA 1013.0 1014.6 1016.1 1013.1 1011.3 1010.4 1010.9 1010.1 1016.1 1019.8 1017.0 1016.0 1014.0 MAX. QNH PRESSURE IN HPA 1019.4 1021.8 1022.9 1020.1 1016.2 1018.2 1016.8 1014.9 1021.8 1024.3 1021.8 1027.6 1027.6 DAY 12 10 23 11 18 6 18 30 27 27 30 3 MIN. QNH PRESSURE IN HPA 1005.7 1006.1 1006.6 1001.4 999.7 1005.0 1003.6 1005.0 1011.2 1013.6 1006.7 1008.0 999.7 DAY 27 15 31 17 13 17 10 4 11 3 23 16 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION NAEIN (40801) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 32 51 N LONGITUDE 53 5 E DATA PROCESSING CENTER ELEVATION 1549.0 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 841.1 842.1 843.3 840.5 838.8 837.7 838.2 837.7 843.0 846.7 844.5 843.7 841.4 MAX. QFE PRESSURE IN HPA 847.2 848.1 849.0 846.2 843.5 844.5 843.2 841.9 848.1 850.2 848.2 853.9 853.9 DAY 12 10 23 11 22 6 18 30 27 27 1 3 MIN. QFE PRESSURE IN HPA 834.6 835.2 835.4 830.8 829.4 832.3 831.5 832.5 838.6 841.4 836.1 837.4 829.4 DAY 23 15 31 17 13 17 10 4 11 3 23 16 MEAN QNH PRESSURE IN HPA 1013.6 1014.9 1016.2 1013.0 1011.1 1009.7 1010.3 1009.7 1015.9 1020.2 1017.6 1016.7 1014.1 MAX. QNH PRESSURE IN HPA 1020.8 1021.8 1022.9 1019.6 1016.5 1017.6 1016.1 1014.6 1021.8 1024.3 1021.9 1028.6 1028.6 DAY 12 10 23 11 22 6 18 30 27 27 1 3 MIN. QNH PRESSURE IN HPA 1006.1 1006.8 1007.1 1001.7 1000.1 1003.4 1002.5 1003.7 1010.8 1014.0 1007.9 1009.4 1000.1 DAY 23 15 31 17 13 17 10 4 11 3 23 16 MEAN QFF PRESSURE IN HPA 1013.4 1012.6 1011.5 1006.5 1000.6 995.7 996.0 994.8 1004.6 1012.8 1013.7 1018.1 1006.7 MAX. QFF PRESSURE IN HPA 1021.0 1022.0 1021.7 1015.3 1007.7 1005.4 1004.2 1002.0 1013.3 1019.4 1024.3 1032.3 1032.3 DAY 1 8 22 11 4 6 18 30 27 27 29 3 MIN. QFF PRESSURE IN HPA 1005.9 1000.5 999.6 994.7 987.4 988.2 986.1 987.5 997.2 1005.0 1000.9 1007.2 986.1 DAY 27 15 31 17 13 17 10 4 11 3 23 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 NAEIN (40801) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 32 51 N LONGITUDE 53 5 E DATA PROCESSING CENTER ELEVATION 1549.0 M MEANS AND EXTREMES FOR THE YEAR 2005 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AIR TEMPERATURE (C) 4.6 5.5 14.1 19.2 22.8 29.6 32.6 30.4 27.9 21.1 11.4 9.5 19.0 MINIMUN AIR TEMPERATURE (C) -1.9 -1.0 5.9 10.5 14.0 19.3 23.1 20.6 17.4 11.6 3.7 1.9 10.4 DAYS WITH MINIMUM TEMP. >=21 0 0 0 0 0 10 25 16 0 0 0 0 51 DAYS WITH MINIMUM TEMP. <=-4 6 10 0 0 0 0 0 0 0 0 0 4 20 DAYS WITH FREEZING MIN.<= 0 20 18 3 2 0 0 0 0 0 0 3 7 53 TEMPERATURE RECORDS LOWEST(C) -11.0 -7.8 -2.0 -1.4 7.4 14.2 18.8 16.2 14.0 2.8 -0.8 -8.2 -11.0 DAY 13 11 27 7 7 1 30 31 28 25 26 31 MAXIMUM AIR TEMPERATURE (C) 9.1 9.7 18.8 24.3 27.5 34.2 37.4 35.3 33.2 26.1 16.1 14.5 23.8 DAYS WITH MAXIMUM TEMP. >=30 0 0 0 4 4 26 31 30 30 1 0 0 126 DAYS WITH MAXIMUM TEMP. <= 0 1 1 0 0 0 0 0 0 0 0 0 0 2 TEMPERATURE RECORDS HIGHEST(C) 17.6 19.8 23.8 31.6 30.8 40.0 41.4 40.4 36.4 30.0 23.6 22.0 41.4 DAY 1 20 11 25 16 22 16 8 5 9 2 4 DIF. BETWEEN (MAX.-MIN.) (C) 11.0 10.7 12.9 13.8 13.5 14.9 14.3 14.7 15.8 14.5 12.4 12.6 13.4 MEAN DAILY TEMP. (MDT) (C) 3.6 4.4 12.4 17.4 20.7 26.7 30.3 27.9 25.3 18.8 9.9 8.2 17.1 COOLING DEG. DAYS(BASE 21 0C) 0.0 0.0 0.0 15.2 22.0 171.9 286.9 214.2 129.6 7.9 0.0 0.0 847.7 HEATING DEG. DAYS(BASE 18 0C) 445.5 381.8 177.1 70.1 3.2 0.0 0.0 0.0 0.0 35.5 243.2 303.4 1659.7 DEWPOINT (MEAN C) -5.9 -5.5 -6.4 -3.5 -0.2 0.8 3.7 1.8 0.3 -2.8 -3.1 -5.4 -2.2 MIXING RATIO (G/KG) 3.08 3.13 3.23 3.79 4.73 5.06 6.08 5.34 4.81 3.78 3.74 3.19 4.16 VAPOUR PRESSURE (HPA) 4.15 4.21 4.34 5.10 6.35 6.76 8.11 7.15 6.45 5.11 5.05 4.31 5.59 SATURATION DEF. (HPA) 4.86 5.47 12.57 18.93 22.39 36.52 42.86 37.99 32.76 21.23 9.18 8.34 21.09 RELATIVE HUMIDITY (MEAN %) 53 50 28 25 24 17 17 18 18 21 40 38 29 RELATIVE HUMIDITY (MAX. %) 73 73 46 40 40 26 25 26 26 30 60 56 43 RELATIVE HUMIDITY (MIN. %) 37 34 17 16 16 13 13 13 14 16 28 26 20 RELATIVE HUMIDITY (MEAN% 03UTC) 70 72 45 39 40 26 25 26 26 30 59 56 43 RELATIVE HUMIDITY (MEAN% 09UTC) 42 41 22 20 20 15 15 15 15 18 31 29 24 RELATIVE HUMIDITY (MEAN% 15UTC) 54 44 22 21 19 13 15 14 15 18 36 34 25 RH=0 => RELATIVE HUMIDITY < 0.5% AMOUNT OF PRECIPITATION MM. 23.9 10.2 0.2 3.0 5.6 0.0 0.8 0.9 0.0 0.0 4.0 4.0 52.6 DAYS WITH PRECIPITATION >=10 1 0 0 0 0 0 0 0 0 0 0 0 1 DAYS WITH PRECIPITATION >= 5 2 1 0 0 0 0 0 0 0 0 0 0 3 DAYS WITH PRECIPITATION >= 1 4 3 0 1 2 0 0 0 0 0 3 2 15 DAYS WITH PRECIPITATION 6 8 4 4 6 0 2 2 0 0 5 2 39 GREATEST DAILY PRECIPITATION 11.1 5.0 0.2 2.0 3.0 0.0 0.8 0.6 0.0 0.0 2.0 3.0 11.1 DAY 12 27 14 12 15 ** 24 12 ** ** 9 18 DAY WITH THUNDER STORM 0 0 0 1 3 0 1 0 0 0 0 0 5 DAYS WITH SNOW OR SLEET 3 2 0 0 0 0 0 0 0 0 0 0 5 DAYS WITH DUST 0 2 5 4 5 0 2 1 0 3 1 2 25 WIND DIRECTION (PREVAILING) 270 90 270 270 270 45 45 90 90 270 90 90 90 PREVAILING WIND SPEED(KNOTS) 7.8 7.7 9.2 9.8 9.6 8.9 9.2 8.4 8.5 8.0 6.7 8.0 8.1 PREVAILING WIND PERCENT 16.8 15.0 18.7 14.7 16.1 25.3 21.3 26.5 22.0 20.6 19.3 18.7 15.7 CALMS PERCENT OF WIND 45.2 38.6 22.6 25.3 21.3 14.7 14.8 16.1 18.7 25.8 38.7 19.4 25.0 NO. OF WIND OBSERVATION 155 140 155 150 155 150 155 155 150 155 150 155 1825 VECTOR WIND DIRECTION (MEAN) 255 159 240 292 310 24 21 52 38 274 3 220 354 VECTOR WIND MAGNITUDE(KNOTS) 1.7 0.1 3.5 0.8 1.7 2.5 3.9 3.7 2.5 0.9 0.6 0.5 0.8 WIND STEADINESES (MEAN %) 35.4 1.9 45.5 11.3 22.4 31.6 48.7 52.1 37.3 15.5 14.0 7.1 12.1 WIND SPEED (MEAN KNOTS) 4.8 5.2 7.7 7.1 7.6 7.9 8.0 7.1 6.7 5.8 4.3 7.0 6.6 FASTEST WIND DIRECTION 230 190 220 220 220 80 280 90 210 220 210 220 220 FASTEST WIND SPEED (KNOTS) 29 23 27 33 23 17 19 16 14 23 16 29 33 DAY 23 1 24 3 4 19 7 4 29 20 17 24 DAYS WITH SKY CLEAR (0-2)/8 20 10 12 15 15 30 26 28 27 30 16 16 245 DAYS WITH P.CLOUDY (3-6)/8 8 14 14 7 16 0 5 3 3 1 11 10 92 DAYS WITH CLOUDY (7-8)/8 3 4 5 8 0 0 0 0 0 0 3 5 28 DAYS WITH VISIBILITY =< 2 KM 0 0 2 2 0 0 0 0 0 0 0 0 4 DURATION OF SUNSHINE HOURS 230.5 197.0 239.0 255.4 286.0 372.4 340.0 347.4 312.1 304.4 211.0 229.3 3324.5 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION NAEIN (40801) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 32 51 N LONGITUDE 53 5 E DATA PROCESSING CENTER ELEVATION 1549.0 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 842.6 841.1 840.7 843.8 841.6 838.9 838.1 839.3 841.4 846.4 846.2 846.2 842.2 MAX. QFE PRESSURE IN HPA 850.0 849.1 846.4 850.7 846.0 844.8 843.1 844.1 845.2 853.3 850.8 852.6 853.3 DAY-HOUR 9- 6 15- 6 29- 6 6- 6 12- 6 16- 6 28- 6 17- 6 22- 6 12- 6 23- 6 29- 6 MIN. QFE PRESSURE IN HPA 828.4 834.9 828.8 836.6 831.8 831.2 830.4 832.9 836.0 838.7 839.6 835.9 828.4 DAY-HOUR 23- 3 5- 3 24-12 27-12 5-15 20-15 6-15 8-15 5-12 4-15 8-12 24- 3 MEAN QNH PRESSURE IN HPA 1015.4 1013.7 1013.2 1016.8 1014.3 1011.1 1010.2 1011.5 1014.0 1019.8 1019.6 1019.6 1014.9 MAX. QNH PRESSURE IN HPA 1024.0 1023.0 1019.9 1024.9 1019.4 1018.0 1016.0 1017.2 1018.5 1027.9 1025.0 1027.1 1027.9 DAY-HOUR 9- 6 15- 6 29- 6 6- 6 12- 6 16- 6 28- 6 17- 6 22- 6 12- 6 23- 6 29- 6 MIN. QNH PRESSURE IN HPA 998.9 1006.5 999.4 1008.4 1002.9 1002.2 1001.2 1004.1 1007.7 1010.9 1011.9 1007.6 998.9 DAY-HOUR 23- 3 5- 3 24-12 27-12 5-15 20-15 6-15 8-15 5-12 4-15 8-12 24- 3 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY-HOUR **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY-HOUR **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** PRESSURE AT HOUR 0000 UTC. MEAN QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** PRESSURE AT HOUR 0300 UTC. MEAN QFE PRESSURE IN HPA 842.3 841.0 841.0 844.3 842.3 839.6 838.4 839.8 841.8 846.7 846.4 846.1 842.5 MAX. QFE PRESSURE IN HPA 848.0 848.0 845.7 849.1 845.5 844.0 841.9 843.4 844.5 852.2 849.6 851.6 852.2 DAY 8 15 29 6 19 16 28 17 22 12 29 29 MIN. QFE PRESSURE IN HPA 828.4 834.9 831.6 837.4 833.0 833.5 832.1 834.2 837.9 841.1 841.1 835.9 828.4 DAY 23 5 24 30 6 20 6 8 5 5 6 24 MEAN QNH PRESSURE IN HPA 1015.1 1013.5 1013.5 1017.4 1015.1 1012.0 1010.6 1012.1 1014.5 1020.2 1019.8 1019.6 1015.3 MAX. QNH PRESSURE IN HPA 1021.7 1021.7 1019.0 1023.0 1018.8 1017.1 1014.6 1016.4 1017.6 1026.6 1023.6 1025.9 1026.6 DAY 8 15 29 6 19 16 28 17 22 12 29 29 MIN. QNH PRESSURE IN HPA 998.9 1006.5 1002.6 1009.4 1004.3 1004.8 1003.2 1005.7 1010.0 1013.7 1013.7 1007.6 998.9 DAY 23 5 24 30 6 20 6 8 5 5 6 24 MEAN QFF PRESSURE IN HPA 1016.9 1014.4 1009.0 1010.1 1005.3 998.2 994.8 997.9 1002.2 1012.2 1017.6 1018.5 1008.1 MAX. QFF PRESSURE IN HPA 1028.9 1026.4 1018.2 1022.4 1009.2 1004.5 1001.5 1004.3 1006.2 1022.0 1022.9 1030.9 1030.9 DAY 13 15 27 6 8 9 29 17 22 24 29 29 MIN. QFF PRESSURE IN HPA 998.4 1004.2 995.2 997.5 994.9 988.9 987.1 989.4 996.2 1003.6 1005.6 1002.6 987.1 DAY 23 2 24 27 6 21 6 8 5 5 6 24 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION NAEIN (40801) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 32 51 N LONGITUDE 53 5 E DATA PROCESSING CENTER ELEVATION 1549.0 M MEANS AND EXTREMES FOR THE YEAR 2005 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 0600 UTC. MEAN QFE PRESSURE IN HPA 843.6 842.3 842.1 845.2 842.8 840.1 839.1 840.4 842.7 847.7 847.4 847.3 843.4 MAX. QFE PRESSURE IN HPA 850.0 849.1 846.4 850.7 846.0 844.8 843.1 844.1 845.2 853.3 850.8 852.6 853.3 DAY 9 15 29 6 12 16 28 17 22 12 23 29 MIN. QFE PRESSURE IN HPA 831.0 836.5 832.0 838.5 834.1 834.2 832.7 834.9 838.7 841.9 842.2 836.3 831.0 DAY 23 5 24 30 6 20 6 8 5 4 6 24 MEAN QNH PRESSURE IN HPA 1016.6 1015.1 1014.8 1018.4 1015.7 1012.5 1011.3 1012.9 1015.5 1021.4 1021.0 1020.9 1016.3 MAX. QNH PRESSURE IN HPA 1024.0 1023.0 1019.9 1024.9 1019.4 1018.0 1016.0 1017.2 1018.5 1027.9 1025.0 1027.1 1027.9 DAY 9 15 29 6 12 16 28 17 22 12 23 29 MIN. QNH PRESSURE IN HPA 1001.9 1008.3 1003.1 1010.7 1005.5 1005.7 1003.9 1006.5 1010.9 1014.6 1015.0 1008.1 1001.9 DAY 23 5 24 30 6 20 6 8 5 4 6 24 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** PRESSURE AT HOUR 0900 UTC. MEAN QFE PRESSURE IN HPA 843.0 841.7 841.2 844.3 841.9 839.4 838.8 839.9 842.0 846.7 846.3 846.4 842.6 MAX. QFE PRESSURE IN HPA 850.0 848.5 845.0 850.0 845.1 844.2 842.4 843.8 844.3 852.2 850.0 852.6 852.6 DAY 9 15 27 6 12 16 28 17 22 11 29 29 MIN. QFE PRESSURE IN HPA 831.1 836.7 830.1 838.0 833.4 833.0 832.0 834.2 837.9 840.9 841.6 838.6 830.1 DAY 23 7 24 30 6 20 6 8 5 4 6 24 MEAN QNH PRESSURE IN HPA 1015.8 1014.4 1013.8 1017.4 1014.6 1011.7 1011.0 1012.3 1014.7 1020.2 1019.8 1019.8 1015.4 MAX. QNH PRESSURE IN HPA 1024.0 1022.3 1018.2 1024.0 1018.3 1017.3 1015.2 1016.8 1017.4 1026.6 1024.0 1027.1 1027.1 DAY 9 15 27 6 12 16 28 17 22 11 29 29 MIN. QNH PRESSURE IN HPA 1002.0 1008.6 1000.9 1010.1 1004.7 1004.3 1003.1 1005.7 1010.0 1013.5 1014.3 1010.8 1000.9 DAY 23 7 24 30 6 20 6 8 5 4 6 24 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** PRESSURE AT HOUR 1200 UTC. MEAN QFE PRESSURE IN HPA 841.8 840.0 839.5 842.7 840.7 838.0 837.4 838.3 840.3 845.3 845.2 845.2 841.2 MAX. QFE PRESSURE IN HPA 848.8 846.7 844.0 848.0 843.8 842.8 841.2 842.3 842.7 851.2 849.1 850.9 851.2 DAY 9 16 27 6 18 16 28 17 22 11 23 29 MIN. QFE PRESSURE IN HPA 832.3 835.0 828.8 836.6 832.4 831.6 830.7 833.0 836.0 839.0 839.6 837.7 828.8 DAY 23 7 24 27 5 20 6 8 5 4 8 24 MEAN QNH PRESSURE IN HPA 1014.5 1012.5 1011.8 1015.5 1013.2 1010.0 1009.4 1010.5 1012.8 1018.6 1018.4 1018.4 1013.8 MAX. QNH PRESSURE IN HPA 1022.6 1020.2 1017.1 1021.7 1016.8 1015.7 1013.8 1015.1 1015.5 1025.4 1023.0 1025.1 1025.4 DAY 9 16 27 6 18 16 28 17 22 11 23 29 MIN. QNH PRESSURE IN HPA 1003.4 1006.6 999.4 1008.4 1003.6 1002.6 1001.6 1004.3 1007.7 1011.2 1011.9 1009.7 999.4 DAY 23 7 24 27 5 20 6 8 5 4 8 24 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION NAEIN (40801) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 32 51 N LONGITUDE 53 5 E DATA PROCESSING CENTER ELEVATION 1549.0 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 842.3 840.6 839.7 842.7 840.6 837.5 836.9 838.0 840.2 845.6 845.8 845.9 841.3 MAX. QFE PRESSURE IN HPA 849.3 847.2 844.4 848.1 845.0 842.4 840.9 841.9 842.6 851.2 850.3 851.0 851.2 DAY 9 16 28 6 18 16 28 16 22 11 23 29 MIN. QFE PRESSURE IN HPA 834.2 835.9 830.1 836.7 831.8 831.2 830.4 832.9 836.0 838.7 840.0 839.1 830.1 DAY 23 7 24 27 5 20 6 8 5 4 8 25 MEAN QNH PRESSURE IN HPA 1015.1 1013.1 1012.0 1015.5 1013.1 1009.5 1008.8 1010.1 1012.6 1019.0 1019.2 1019.3 1013.9 MAX. QNH PRESSURE IN HPA 1023.2 1020.8 1017.5 1021.8 1018.2 1015.2 1013.5 1014.6 1015.4 1025.4 1024.4 1025.2 1025.4 DAY 9 16 28 6 18 16 28 16 22 11 23 29 MIN. QNH PRESSURE IN HPA 1005.7 1007.6 1000.9 1008.6 1002.9 1002.2 1001.2 1004.1 1007.7 1010.9 1012.4 1011.4 1000.9 DAY 23 7 24 27 5 20 6 8 5 4 8 25 MEAN QFF PRESSURE IN HPA 1016.8 1013.9 1007.5 1008.1 1003.2 995.5 993.0 995.8 1000.2 1011.0 1016.9 1018.4 1006.7 MAX. QFF PRESSURE IN HPA 1029.7 1024.3 1016.9 1022.0 1008.6 1001.7 1000.3 1002.3 1003.7 1019.9 1022.7 1031.5 1031.5 DAY 13 15 27 6 14 9 28 17 22 24 27 31 MIN. QFF PRESSURE IN HPA 1000.8 1003.2 995.2 997.4 994.4 986.2 984.3 987.8 993.6 1001.1 1009.3 1007.6 984.3 DAY 3 21 24 27 5 20 6 8 5 4 8 24 PRESSURE AT HOUR 1800 UTC. MEAN QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** PRESSURE AT HOUR 2100 UTC. MEAN QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION NAEIN (40801) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 32 51 N LONGITUDE 53 5 E DATA PROCESSING CENTER ELEVATION 1549.0 M CLIMATOLOGICAL NORMALS FOR THE PERIOD 1992-2005 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AIR TEMPERATURE (C) 5.2 8.0 11.9 18.6 23.4 29.0 31.3 30.4 26.4 19.9 12.3 7.3 18.6 MINIMUN AIR TEMPERATURE (C) -1.7 0.3 4.0 10.0 14.2 18.9 21.7 19.9 16.0 10.4 4.3 0.1 9.8 DAYS WITH MINIMUM TEMP. >=21 0.0 0.0 0.0 0.0 0.2 5.6 19.9 9.4 0.4 0.1 0.0 0.0 35.6 DAYS WITH MINIMUM TEMP. <=-4 7.7 3.8 0.9 0.0 0.0 0.0 0.0 0.0 0.0 0.0 1.0 4.9 18.3 DAYS WITH FREEZING MIN.<= 0 21.3 15.3 5.7 0.3 0.0 0.0 0.0 0.0 0.0 0.0 4.1 15.9 62.6 TEMPERATURE RECORDS LOWEST(C) -19.2 -12.2 -8.0 -2.4 5.4 10.5 14.0 13.5 7.5 1.5 -8.0 -13.0 -19.2 YEAR-DAY 96-15 97- 8 92-13 97-12 3- 2 0-14 1-31 92-31 94-22 93- 9 95-28 94- 8 96-15 MAXIMUM AIR TEMPERATURE (C) 9.7 12.8 16.5 23.4 28.2 33.9 36.2 35.4 31.5 24.8 17.0 11.9 23.4 DAYS WITH MAXIMUM TEMP. >=30 0.0 0.0 0.0 1.2 11.0 27.6 30.5 30.4 21.8 2.4 0.0 0.0 124.9 DAYS WITH MAXIMUM TEMP. <= 0 1.0 0.1 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.1 1.2 TEMPERATURE RECORDS HIGHEST(C) 21.0 25.0 27.4 33.0 36.4 40.5 41.5 41.0 37.0 32.2 25.4 24.0 41.5 YEAR-DAY 3-13 4-14 4- 6 2-28 0-26 0-24 98-11 97-15 96- 9 98- 1 1- 7 98-17 98-11 DIF. BETWEEN (MAX.-MIN.) (C) 11.4 12.5 12.5 13.4 14.0 15.0 14.5 15.5 15.5 14.4 12.7 11.8 13.6 MEAN DAILY TEMP. (MDT) (C) 4.0 6.6 10.2 16.7 21.2 26.4 28.9 27.7 23.7 17.6 10.6 6.0 16.6 STANDARD DEVIATION OF MDT(C) 1.73 1.58 1.87 1.33 1.53 0.65 1.49 1.00 1.45 1.63 1.58 2.13 1.50 COOLING DEG. DAYS(BASE 21 0C) 0.0 0.0 0.0 4.6 41.5 162.0 245.5 206.8 90.7 5.5 0.0 0.0 756.6 HEATING DEG. DAYS(BASE 18 0C) 433.7 323.0 241.7 65.2 10.2 0.0 0.0 0.0 0.8 45.4 220.8 372.4 1713.2 DEWPOINT (MEAN C) -5.3 -6.4 -5.0 -1.9 0.0 1.0 4.0 2.2 0.1 -1.9 -3.7 -5.0 -1.8 MIXING RATIO (G/KG) 3.25 3.07 3.43 4.26 4.91 5.29 6.41 5.65 4.78 4.15 3.69 3.37 4.36 VAPOUR PRESSURE (HPA) 4.38 4.13 4.61 5.72 6.58 7.07 8.53 7.56 6.42 5.61 4.98 4.54 5.85 SATURATION DEF. (HPA) 5.03 7.30 10.54 17.17 24.05 34.60 38.71 37.93 29.94 19.03 10.23 6.27 20.07 RELATIVE HUMIDITY (MEAN %) 52 41 36 29 25 19 20 18 19 26 37 47 30 RELATIVE HUMIDITY (MAX. %) 69 60 54 47 40 29 29 27 29 39 53 62 45 RELATIVE HUMIDITY (MIN. %) 39 28 24 19 16 13 15 13 14 18 26 34 22 RELATIVE HUMIDITY (MEAN% 03UTC) 66 58 53 45 39 28 29 26 29 39 52 60 44 RELATIVE HUMIDITY (MEAN% 09UTC) 44 33 29 23 20 16 17 15 16 21 29 39 25 RELATIVE HUMIDITY (MEAN% 15UTC) 53 37 31 25 21 15 16 15 17 24 36 49 28 RH=0 => RELATIVE HUMIDITY < 0.5% AMOUNT OF PRECIPITATION MM. 22.8 12.0 20.3 12.1 10.0 1.1 0.6 0.2 0.1 1.8 5.0 12.7 98.7 DAYS WITH PRECIPITATION >=10 0.8 0.5 0.5 0.4 0.1 0.0 0.0 0.0 0.0 0.0 0.1 0.3 2.7 DAYS WITH PRECIPITATION >= 5 1.9 1.0 1.5 0.9 0.7 0.1 0.0 0.0 0.0 0.1 0.4 0.9 7.5 DAYS WITH PRECIPITATION >= 1 4.1 2.1 3.3 2.4 2.3 0.1 0.1 0.1 0.0 0.6 1.6 2.9 19.6 DAYS WITH PRECIPITATION 6.2 4.4 5.2 4.1 3.4 0.7 0.6 0.3 0.3 1.1 2.4 4.8 33.5 GREATEST DAILY PRECIPITATION 17.0 18.0 35.1 18.0 19.0 9.0 4.0 1.0 0.8 5.0 11.0 16.0 35.1 YEAR-DAY 99-25 98-12 99- 2 94-11 95-29 96-29 4-13 98- 4 99-28 97-24 2- 7 97-21 99 DAY WITH THUNDER STORM 0.0 0.0 0.1 0.5 1.4 0.1 0.1 0.0 0.0 0.1 0.1 0.0 2.4 DAYS WITH SNOW OR SLEET 2.0 1.1 0.5 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.1 0.6 4.3 DAYS WITH DUST 0.5 1.4 2.8 3.3 3.5 2.1 1.4 0.6 0.6 0.9 1.5 0.9 19.5 WIND DIRECTION (PREVAILING) 270 270 270 270 270 270 45 45 45 270 270 270 270 PREVAILING WIND SPEED(KNOTS) 8.0 8.8 9.9 10.2 10.3 9.3 9.3 8.8 8.3 8.3 7.9 7.3 8.8 PREVAILING WIND PERCENT 14.4 16.3 15.3 17.1 19.0 18.2 21.3 21.2 16.9 18.2 13.1 12.3 15.7 CALMS PERCENT OF WIND 48.4 36.1 37.1 31.3 30.0 25.7 26.4 26.3 30.0 35.3 42.2 48.2 34.7 NO. OF WIND OBSERVATION 155.0 141.2 155.0 149.9 161.5 160.9 168.3 163.4 156.4 156.5 150.0 155.0 1873.1 VECTOR WIND DIRECTION (MEAN) 226 229 231 240 273 347 22 30 19 317 223 205 293 VECTOR WIND MAGNITUDE(KNOTS) 1.3 2.3 2.3 2.6 1.7 1.8 3.4 3.0 1.6 1.0 1.0 0.9 0.7 WIND STEADINESES (MEAN %) 28.3 34.8 35.4 36.6 25.0 26.5 50.7 47.6 27.1 18.9 19.6 20.0 11.7 WIND SPEED (MEAN KNOTS) 4.6 6.6 6.5 7.1 6.8 6.8 6.7 6.3 5.9 5.3 5.1 4.5 6.0 FASTEST WIND DIRECTION 190 190 210 250 280 250 200 330 210 330 230 180 280 FASTEST WIND SPEED (KNOTS) 29 35 33 33 39 29 27 29 23 27 39 39 39 YEAR-DAY 97-16 95- 5 97-25 1-12 92- 4 2- 6 98-17 1-11 92-25 2-22 94-30 94- 2 92 DAYS WITH SKY CLEAR (0-2)/8 16.5 16.3 14.9 12.0 17.2 25.9 25.7 28.6 28.0 24.9 17.0 16.0 243.0 DAYS WITH P.CLOUDY (3-6)/8 9.2 8.7 10.7 13.1 12.2 3.7 5.3 2.4 2.0 5.6 9.9 10.0 92.8 DAYS WITH CLOUDY (7-8)/8 5.4 3.2 5.4 4.9 1.6 0.4 0.0 0.0 0.0 0.5 3.1 5.0 29.5 DAYS WITH VISIBILITY =< 2 KM 1.2 0.8 0.6 0.4 0.1 0.1 0.0 0.0 0.0 0.1 0.1 1.1 4.5 DURATION OF SUNSHINE HOURS 199.1 221.2 224.6 249.7 303.2 348.4 348.1 351.9 313.0 285.0 221.5 207.7 3273.4 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION NAEIN (40801) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 32 51 N LONGITUDE 53 5 E DATA PROCESSING CENTER ELEVATION 1549.0 M CLIMATOLOGICAL NORMALS FOR THE PERIOD 1992-2005 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL MEAN QFE PRESSURE IN HPA 843.2 841.9 841.3 841.8 841.6 838.9 837.7 839.8 842.4 845.9 845.7 845.3 842.1 MAX. QFE PRESSURE IN HPA 854.5 853.9 854.5 851.9 849.9 848.9 846.1 847.5 853.3 853.7 856.9 854.6 856.9 YEAR-DAY 99- 2 98-23 2-11 98-12 98- 8 97-18 0-30 99-20 94-23 95-27 96-18 99- 6 96-18 MIN. QFE PRESSURE IN HPA 828.1 828.6 828.8 829.7 829.1 829.5 829.6 832.4 832.0 837.7 833.8 830.9 828.1 YEAR-DAY 98-13 3-19 5-24 2- 3 4-13 3-30 98- 8 2-17 0- 1 96-27 1-18 2-21 98-13 MEAN QNH PRESSURE IN HPA 1016.1 1014.6 1013.9 1014.5 1014.2 1011.1 1009.7 1012.2 1015.2 1019.3 1019.1 1018.5 1014.9 MAX. QNH PRESSURE IN HPA 1029.3 1028.6 1029.3 1026.2 1023.9 1022.8 1019.5 1021.1 1027.9 1028.3 1032.1 1029.4 1032.1 YEAR-DAY 99- 2 98-23 2-11 98-12 98- 8 97-18 0-30 99-20 94-23 95-27 96-18 99- 6 96-18 MIN. QNH PRESSURE IN HPA 998.6 999.1 999.4 1000.4 999.7 1000.2 1000.3 1003.6 1003.1 1009.7 1005.2 1001.8 998.6 YEAR-DAY 98-13 3-19 5-24 2- 3 4-13 3-30 98- 8 2-17 0- 1 96-27 1-18 2-21 98-13 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** 1004.3 997.2 996.7 999.3 1003.1 ****** ****** ****** 1000.1 MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** 1013.8 1010.0 1005.3 1006.9 1011.1 ****** ****** ****** 1013.8 YEAR-DAY **-** **-** **-** **-** 93- 9 93-23 0-31 93-25 93-23 **-** **-** **-** 93- 9 MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** 998.2 985.4 987.8 989.7 995.5 ****** ****** ****** 985.4 YEAR-DAY **-** **-** **-** **-** 93-31 0-24 0-11 93-12 93- 3 **-** **-** **-** 0-24 PRESSURE AT HOUR 0000 UTC. MEAN QFE PRESSURE IN HPA ****** ****** ****** ****** 841.8 838.9 839.1 840.5 842.2 ****** ****** ****** 840.5 MAX. QFE PRESSURE IN HPA ****** ****** ****** ****** 845.2 846.5 844.5 844.5 846.5 ****** ****** ****** 846.5 YEAR-DAY **-** **-** **-** **-** 93- 9 93-23 0-31 93-31 93-24 **-** **-** **-** 93-23 MIN. QFE PRESSURE IN HPA ****** ****** ****** ****** 838.7 832.8 833.7 835.1 838.9 ****** ****** ****** 832.8 YEAR-DAY **-** **-** **-** **-** 93- 7 0-25 93-13 93-13 93-14 **-** **-** **-** 0-25 MEAN QNH PRESSURE IN HPA ****** ****** ****** ****** 1014.5 1011.1 1011.3 1013.0 1014.9 ****** ****** ****** 1013.0 MAX. QNH PRESSURE IN HPA ****** ****** ****** ****** 1018.5 1020.0 1017.6 1017.6 1020.0 ****** ****** ****** 1020.0 YEAR-DAY **-** **-** **-** **-** 93- 9 93-23 0-31 93-31 93-24 **-** **-** **-** 93-23 MIN. QNH PRESSURE IN HPA ****** ****** ****** ****** 1010.9 1004.0 1005.1 1006.7 1011.1 ****** ****** ****** 1004.0 YEAR-DAY **-** **-** **-** **-** 93- 7 0-25 93-13 93-13 93-14 **-** **-** **-** 0-25 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** 1004.2 997.6 996.8 999.1 1002.7 ****** ****** ****** 1000.1 MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** 1011.6 1009.3 1003.9 1004.7 1009.4 ****** ****** ****** 1011.6 YEAR-DAY **-** **-** **-** **-** 93-10 93-23 0-23 93-25 93-24 **-** **-** **-** 93-10 MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** 999.5 987.0 988.4 990.8 997.4 ****** ****** ****** 987.0 YEAR-DAY **-** **-** **-** **-** 93-21 0-25 0-12 93-23 93- 4 **-** **-** **-** 0-25 PRESSURE AT HOUR 0300 UTC. MEAN QFE PRESSURE IN HPA 843.2 842.0 841.6 842.3 842.3 839.6 838.3 840.3 842.9 846.3 845.9 845.4 842.5 MAX. QFE PRESSURE IN HPA 852.0 852.4 852.9 851.2 848.8 848.1 845.5 846.6 852.1 852.8 856.0 853.6 856.0 YEAR-DAY 99- 2 98-23 2-11 98-12 98- 8 97-18 96- 4 99-20 94-23 95-27 96-19 99- 6 96-19 MIN. QFE PRESSURE IN HPA 828.4 830.8 831.2 832.1 832.7 831.1 831.4 833.9 834.7 840.2 834.3 832.2 828.4 YEAR-DAY 5-23 3-19 1-26 2- 4 4-13 99-25 3- 1 94- 2 0- 1 96- 6 94-26 94- 4 5-23 MEAN QNH PRESSURE IN HPA 1016.1 1014.7 1014.2 1015.1 1015.1 1012.0 1010.4 1012.8 1015.7 1019.7 1019.3 1018.6 1015.3 MAX. QNH PRESSURE IN HPA 1026.4 1026.8 1027.4 1025.4 1022.6 1021.8 1018.8 1020.1 1026.5 1027.3 1031.0 1028.2 1031.0 YEAR-DAY 99- 2 98-23 2-11 98-12 98- 8 97-18 96- 4 99-20 94-23 95-27 96-19 99- 6 96-19 MIN. QNH PRESSURE IN HPA 998.9 1001.7 1002.2 1003.2 1003.9 1002.0 1002.4 1005.3 1006.2 1012.6 1005.8 1003.3 998.9 YEAR-DAY 5-23 3-19 1-26 2- 4 4-13 99-25 3- 1 94- 2 0- 1 96- 6 94-26 94- 4 5-23 MEAN QFF PRESSURE IN HPA 1017.6 1014.2 1011.0 1007.8 1004.7 998.2 995.3 998.6 1004.1 1012.3 1016.5 1019.0 1008.3 MAX. QFF PRESSURE IN HPA 1032.5 1030.6 1028.5 1022.4 1018.0 1010.7 1005.6 1008.3 1020.0 1024.8 1034.5 1034.6 1034.6 YEAR-DAY 99- 3 98-23 2-11 5- 6 98- 3 95- 1 4-18 96-31 94-23 95-27 96-19 3-12 3-12 MIN. QFF PRESSURE IN HPA 998.4 997.5 995.2 994.6 991.9 986.7 985.6 989.4 991.8 1002.4 1001.6 999.5 985.6 YEAR-DAY 5-23 94- 1 5-24 4-17 4-13 99-25 98- 8 5- 8 0- 2 98- 1 93-14 94- 4 98- 8 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION NAEIN (40801) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 32 51 N LONGITUDE 53 5 E DATA PROCESSING CENTER ELEVATION 1549.0 M CLIMATOLOGICAL NORMALS FOR THE PERIOD 1992-2005 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 0600 UTC. MEAN QFE PRESSURE IN HPA 844.3 843.1 842.6 843.1 842.8 840.1 838.8 841.0 843.7 847.2 846.9 846.4 843.3 MAX. QFE PRESSURE IN HPA 854.5 853.9 854.5 851.9 849.9 848.9 846.1 847.5 853.3 853.7 856.9 854.6 856.9 YEAR-DAY 99- 2 98-23 2-11 98-12 98- 8 97-18 0-30 99-20 94-23 95-27 96-18 99- 6 96-18 MIN. QFE PRESSURE IN HPA 828.4 831.3 832.0 830.5 832.9 831.6 832.3 834.5 835.0 841.1 837.2 833.7 828.4 YEAR-DAY 98-13 96- 5 5-24 4-17 4-13 99-25 98- 8 94- 2 0- 1 96- 6 1-18 94- 4 98-13 MEAN QNH PRESSURE IN HPA 1017.4 1016.1 1015.4 1016.0 1015.7 1012.6 1011.0 1013.6 1016.7 1020.8 1020.5 1019.9 1016.3 MAX. QNH PRESSURE IN HPA 1029.3 1028.6 1029.3 1026.2 1023.9 1022.8 1019.5 1021.1 1027.9 1028.3 1032.1 1029.4 1032.1 YEAR-DAY 99- 2 98-23 2-11 98-12 98- 8 97-18 0-30 99-20 94-23 95-27 96-18 99- 6 96-18 MIN. QNH PRESSURE IN HPA 998.9 1002.3 1003.1 1001.4 1004.1 1002.6 1003.4 1006.0 1006.6 1013.7 1009.1 1005.1 998.9 YEAR-DAY 98-13 96- 5 5-24 4-17 4-13 99-25 98- 8 94- 2 0- 1 96- 6 1-18 94- 4 98-13 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** 1005.3 998.2 997.3 1000.2 1004.1 ****** ****** ****** 1001.0 MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** 1013.6 1008.8 1004.7 1006.3 1011.1 ****** ****** ****** 1013.6 YEAR-DAY **-** **-** **-** **-** 93- 9 93-23 0-30 93-25 93-23 **-** **-** **-** 93- 9 MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** 999.0 989.0 989.6 992.9 998.5 ****** ****** ****** 989.0 YEAR-DAY **-** **-** **-** **-** 93-29 0-26 0-11 93-12 93-14 **-** **-** **-** 0-26 PRESSURE AT HOUR 0900 UTC. MEAN QFE PRESSURE IN HPA 843.4 842.3 841.7 842.2 841.9 839.3 838.2 840.3 842.8 846.1 845.8 845.3 842.4 MAX. QFE PRESSURE IN HPA 854.2 853.0 852.8 851.7 849.0 847.9 845.8 846.7 852.3 852.6 856.1 854.0 856.1 YEAR-DAY 99- 2 98-23 2-11 94- 5 98- 8 97-18 96- 3 96-30 94-23 93-17 96-18 4- 3 96-18 MIN. QFE PRESSURE IN HPA 828.1 829.6 830.1 830.0 831.0 831.4 831.8 833.8 834.1 839.1 835.1 832.0 828.1 YEAR-DAY 98-13 3-19 5-24 4-17 4-13 99-25 98- 8 94- 2 0- 1 96-27 1-18 94- 4 98-13 MEAN QNH PRESSURE IN HPA 1016.3 1015.0 1014.4 1014.9 1014.6 1011.6 1010.3 1012.8 1015.7 1019.6 1019.1 1018.6 1015.3 MAX. QNH PRESSURE IN HPA 1028.9 1027.5 1027.3 1026.0 1022.9 1021.6 1019.2 1020.2 1026.7 1027.1 1031.1 1028.7 1031.1 YEAR-DAY 99- 2 98-23 2-11 94- 5 98- 8 97-18 96- 3 96-30 94-23 93-17 96-18 4- 3 96-18 MIN. QNH PRESSURE IN HPA 998.6 1000.3 1000.9 1000.8 1001.9 1002.4 1002.9 1005.2 1005.5 1011.4 1006.7 1003.1 998.6 YEAR-DAY 98-13 3-19 5-24 4-17 4-13 99-25 98- 8 94- 2 0- 1 96-27 1-18 94- 4 98-13 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** 1004.2 997.8 997.0 999.7 1003.5 ****** ****** ****** 1000.4 MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** 1012.6 1008.0 1004.5 1004.8 1010.3 ****** ****** ****** 1012.6 YEAR-DAY **-** **-** **-** **-** 93- 9 93-23 0-30 93-25 93-23 **-** **-** **-** 93- 9 MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** 999.5 988.7 989.3 991.9 997.7 ****** ****** ****** 988.7 YEAR-DAY **-** **-** **-** **-** 93-23 0-24 0-11 93-12 93-14 **-** **-** **-** 0-24 PRESSURE AT HOUR 1200 UTC. MEAN QFE PRESSURE IN HPA 842.2 840.8 840.2 840.7 840.5 837.9 836.8 838.8 841.3 844.8 844.7 844.3 841.1 MAX. QFE PRESSURE IN HPA 852.7 850.9 850.6 850.4 847.6 846.9 845.5 844.6 851.0 851.6 855.1 853.1 855.1 YEAR-DAY 99- 2 98-23 2-11 94- 5 98- 8 97-18 96- 3 96-29 94-23 95-27 96-18 4- 3 96-18 MIN. QFE PRESSURE IN HPA 829.1 828.6 828.8 829.7 829.1 830.1 830.3 832.6 832.3 837.7 833.8 830.9 828.6 YEAR-DAY 98-13 3-19 5-24 2- 3 4-13 3-30 98- 8 2-17 0- 1 96-27 1-18 2-21 3-19 MEAN QNH PRESSURE IN HPA 1014.9 1013.3 1012.6 1013.2 1013.0 1009.9 1008.7 1011.1 1013.9 1018.0 1017.9 1017.4 1013.7 MAX. QNH PRESSURE IN HPA 1027.2 1025.1 1024.7 1024.5 1021.2 1020.4 1018.8 1017.8 1025.2 1025.9 1030.0 1027.6 1030.0 YEAR-DAY 99- 2 98-23 2-11 94- 5 98- 8 97-18 96- 3 96-29 94-23 95-27 96-18 4- 3 96-18 MIN. QNH PRESSURE IN HPA 999.7 999.1 999.4 1000.4 999.7 1000.9 1001.1 1003.8 1003.4 1009.7 1005.2 1001.8 999.1 YEAR-DAY 98-13 3-19 5-24 2- 3 4-13 3-30 98- 8 2-17 0- 1 96-27 1-18 2-21 3-19 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** 1003.1 996.5 995.9 998.2 1001.7 ****** ****** ****** 999.1 MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** 1011.2 1007.3 1003.8 1003.7 1009.0 ****** ****** ****** 1011.2 YEAR-DAY **-** **-** **-** **-** 93- 9 93-23 0-30 93-25 93-23 **-** **-** **-** 93- 9 MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** 998.2 987.6 987.8 990.6 995.5 ****** ****** ****** 987.6 YEAR-DAY **-** **-** **-** **-** 93-31 0-24 0-11 93-12 93- 3 **-** **-** **-** 0-24 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION NAEIN (40801) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 32 51 N LONGITUDE 53 5 E DATA PROCESSING CENTER ELEVATION 1549.0 M CLIMATOLOGICAL NORMALS FOR THE PERIOD 1992-2005 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 1500 UTC. MEAN QFE PRESSURE IN HPA 842.8 841.3 840.4 840.8 840.3 837.4 836.4 838.5 841.3 845.2 845.3 845.0 841.2 MAX. QFE PRESSURE IN HPA 852.8 850.9 850.6 850.4 847.5 846.6 844.2 844.8 851.0 852.1 855.8 853.9 855.8 YEAR-DAY 99- 2 98-23 2-10 94- 5 98- 8 97-18 0-30 96-31 94-23 95-27 96-18 4- 3 96-18 MIN. QFE PRESSURE IN HPA 829.7 830.2 830.0 830.6 829.4 829.5 829.6 832.4 832.0 838.6 834.6 831.9 829.4 YEAR-DAY 3-28 3-19 97-25 2- 3 4-13 3-30 98- 8 2-17 0- 1 96-27 1-18 94- 4 4-13 MEAN QNH PRESSURE IN HPA 1015.7 1013.9 1012.9 1013.3 1012.8 1009.4 1008.2 1010.7 1013.9 1018.4 1018.6 1018.3 1013.8 MAX. QNH PRESSURE IN HPA 1027.3 1025.1 1024.7 1024.5 1021.1 1020.1 1017.3 1018.0 1025.2 1026.5 1030.8 1028.6 1030.8 YEAR-DAY 99- 2 98-23 2-10 94- 5 98- 8 97-18 0-30 96-31 94-23 95-27 96-18 4- 3 96-18 MIN. QNH PRESSURE IN HPA 1000.4 1001.0 1000.8 1001.5 1000.1 1000.2 1000.3 1003.6 1003.1 1010.8 1006.1 1003.0 1000.1 YEAR-DAY 3-28 3-19 97-25 2- 3 4-13 3-30 98- 8 2-17 0- 1 96-27 1-18 94- 4 4-13 MEAN QFF PRESSURE IN HPA 1017.0 1013.4 1009.6 1005.9 1002.3 995.5 993.0 996.4 1002.2 1011.0 1015.8 1018.5 1006.7 MAX. QFF PRESSURE IN HPA 1032.4 1028.2 1027.7 1023.1 1015.9 1007.0 1004.2 1006.1 1018.4 1023.5 1033.1 1033.6 1033.6 YEAR-DAY 99- 2 98-23 3- 2 94- 5 3- 2 95- 1 4-18 96-31 94-23 95-27 96-18 3-12 3-12 MIN. QFF PRESSURE IN HPA 997.6 997.0 994.3 994.0 987.4 984.9 982.6 987.5 989.0 1000.6 1000.9 1000.1 982.6 YEAR-DAY 3-28 3-20 3-26 98-21 4-13 3-30 98- 8 4- 4 0- 1 98- 2 4-23 94- 3 98- 8 PRESSURE AT HOUR 1800 UTC. MEAN QFE PRESSURE IN HPA ****** ****** ****** ****** 842.1 838.7 839.3 840.8 842.6 ****** ****** ****** 840.7 MAX. QFE PRESSURE IN HPA ****** ****** ****** ****** 845.6 845.9 845.4 845.0 847.5 ****** ****** ****** 847.5 YEAR-DAY **-** **-** **-** **-** 93- 9 93-22 0-30 93-30 93-23 **-** **-** **-** 93-23 MIN. QFE PRESSURE IN HPA ****** ****** ****** ****** 839.1 831.9 834.0 834.8 838.8 ****** ****** ****** 831.9 YEAR-DAY **-** **-** **-** **-** 93-31 0-24 93-13 93-12 93- 3 **-** **-** **-** 0-24 MEAN QNH PRESSURE IN HPA ****** ****** ****** ****** 1014.9 1010.9 1011.6 1013.4 1015.4 ****** ****** ****** 1013.2 MAX. QNH PRESSURE IN HPA ****** ****** ****** ****** 1018.9 1019.3 1018.7 1018.2 1021.1 ****** ****** ****** 1021.1 YEAR-DAY **-** **-** **-** **-** 93- 9 93-22 0-30 93-30 93-23 **-** **-** **-** 93-23 MIN. QNH PRESSURE IN HPA ****** ****** ****** ****** 1011.4 1003.0 1005.4 1006.4 1011.0 ****** ****** ****** 1003.0 YEAR-DAY **-** **-** **-** **-** 93-31 0-24 93-13 93-12 93- 3 **-** **-** **-** 0-24 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** 1004.2 996.4 996.2 998.7 1002.6 ****** ****** ****** 999.6 MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** 1012.0 1006.8 1004.2 1004.0 1009.4 ****** ****** ****** 1012.0 YEAR-DAY **-** **-** **-** **-** 93- 9 93-22 0-30 93-25 93-23 **-** **-** **-** 93- 9 MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** 999.0 985.4 988.5 990.4 996.5 ****** ****** ****** 985.4 YEAR-DAY **-** **-** **-** **-** 93-20 0-24 0-11 93-22 93- 3 **-** **-** **-** 0-24 PRESSURE AT HOUR 2100 UTC. MEAN QFE PRESSURE IN HPA ****** ****** ****** ****** 842.2 839.1 839.5 841.2 842.5 ****** ****** ****** 840.9 MAX. QFE PRESSURE IN HPA ****** ****** ****** ****** 846.1 846.5 845.7 845.0 846.9 ****** ****** ****** 846.9 YEAR-DAY **-** **-** **-** **-** 93- 9 93-22 0-30 93-30 93-23 **-** **-** **-** 93-23 MIN. QFE PRESSURE IN HPA ****** ****** ****** ****** 839.0 831.9 834.2 835.7 838.5 ****** ****** ****** 831.9 YEAR-DAY **-** **-** **-** **-** 93-31 0-24 93-12 93-12 93-13 **-** **-** **-** 0-24 MEAN QNH PRESSURE IN HPA ****** ****** ****** ****** 1015.0 1011.3 1011.8 1013.8 1015.3 ****** ****** ****** 1013.4 MAX. QNH PRESSURE IN HPA ****** ****** ****** ****** 1019.5 1020.0 1019.0 1018.2 1020.4 ****** ****** ****** 1020.4 YEAR-DAY **-** **-** **-** **-** 93- 9 93-22 0-30 93-30 93-23 **-** **-** **-** 93-23 MIN. QNH PRESSURE IN HPA ****** ****** ****** ****** 1011.2 1003.0 1005.7 1007.4 1010.7 ****** ****** ****** 1003.0 YEAR-DAY **-** **-** **-** **-** 93-31 0-24 93-12 93-12 93-13 **-** **-** **-** 0-24 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** 1004.3 997.3 997.0 999.5 1003.2 ****** ****** ****** 1000.3 MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** 1012.7 1008.2 1005.0 1005.1 1009.8 ****** ****** ****** 1012.7 YEAR-DAY **-** **-** **-** **-** 93- 9 93-22 0-30 93-25 93-23 **-** **-** **-** 93- 9 MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** 998.8 985.6 989.7 990.3 996.4 ****** ****** ****** 985.6 YEAR-DAY **-** **-** **-** **-** 93-20 0-24 0-11 93-22 93-13 **-** **-** **-** 0-24 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION NAEIN (40801) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) FORM 1 LATITUDE 32 51 N LONGITUDE 53 5 E DATA PROCESSING CENTER ELEVATION 1549.0 M AVERAGE OF DRY BULB TEMPERATURE IN C. YEAR JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL 1992 ***** ***** 7.7 16.5 20.1 28.9 32.3 28.4 24.7 18.6 13.9 6.3 ****** 1993 2.5 6.8 10.0 18.0 20.5 26.5 28.0 27.0 23.8 16.7 11.1 8.0 16.6 1994 6.9 7.0 12.9 18.7 23.3 29.4 32.3 31.9 22.9 17.5 14.2 5.1 18.5 1995 7.6 7.9 11.9 17.1 21.9 27.8 33.2 31.6 26.3 18.6 13.7 3.7 18.4 1996 1.4 8.0 9.6 17.8 23.2 29.1 29.3 30.0 28.2 18.8 10.6 8.8 17.9 1997 6.8 7.0 9.5 17.3 23.0 28.6 33.7 31.6 26.4 21.2 11.0 6.7 18.6 1998 4.8 6.5 12.2 19.8 23.6 29.1 31.6 30.5 27.0 19.9 15.9 12.1 19.4 1999 4.6 10.7 11.0 18.2 25.3 31.0 30.4 30.3 27.4 21.3 11.8 7.9 19.2 2000 5.5 7.2 12.3 22.0 27.4 27.7 28.1 29.5 27.5 18.6 9.6 7.2 18.6 2001 4.2 8.3 14.5 21.5 25.7 29.7 31.1 30.5 26.4 21.3 13.2 9.2 19.6 2002 5.3 9.3 14.3 18.1 24.8 29.2 30.8 31.8 28.4 22.4 11.5 5.7 19.3 2003 6.3 9.4 11.9 19.2 22.2 29.6 34.3 30.1 26.2 22.1 11.3 6.3 19.1 2004 6.8 10.8 14.6 17.2 23.7 29.7 29.9 31.5 25.9 20.1 13.7 5.0 19.1 2005 4.6 5.5 14.1 19.2 22.8 29.6 32.6 30.4 27.9 21.1 11.4 9.5 19.0 MEAN 5.2 8.0 11.9 18.6 23.4 29.0 31.3 30.4 26.4 19.9 12.3 7.3 18.6 =============================================================================================== TEHRAN 2006,MAY M.(S & A) STATION NAEIN (40801) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) FORM 2 LATITUDE 32 51 N LONGITUDE 53 5 E DATA PROCESSING CENTER ELEVATION 1549.0 M AVERAGE OF MINIMUM TEMPERATURE IN C. YEAR JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL 1992 ***** ***** 0.7 8.1 12.1 18.3 20.7 18.4 13.7 8.3 5.3 0.1 ****** 1993 -2.8 0.2 2.8 9.5 13.4 17.6 20.0 18.6 15.5 7.8 3.7 -0.4 8.8 1994 -0.8 -1.3 4.8 10.2 14.3 19.0 22.4 21.1 12.8 10.0 7.0 -3.0 9.7 1995 -0.9 0.1 3.2 9.7 13.4 18.4 22.7 20.3 15.7 8.8 3.3 -3.3 9.3 1996 -5.6 1.7 3.3 9.6 14.5 19.0 20.0 19.4 17.0 8.8 2.1 0.5 9.2 1997 -0.7 -2.4 2.1 8.5 13.8 19.4 23.7 20.1 16.1 12.5 4.2 -0.2 9.8 1998 -1.9 -0.3 4.9 10.4 14.1 18.0 22.0 20.6 16.5 9.7 5.8 3.7 10.3 1999 -1.5 2.9 4.2 9.7 14.7 20.0 21.1 19.3 16.8 11.4 4.4 -0.3 10.2 2000 -2.1 -0.9 3.4 11.8 16.3 18.2 19.7 19.3 17.6 9.3 3.1 0.8 9.7 2001 -3.1 -0.1 5.7 11.3 15.6 19.0 21.7 19.7 16.4 11.8 4.4 2.8 10.4 2002 -1.4 1.1 4.5 10.8 15.0 19.3 21.4 21.2 17.0 12.4 4.5 -0.6 10.4 2003 -0.4 1.3 3.8 10.7 12.6 19.3 24.2 20.0 15.7 12.5 2.4 0.0 10.2 2004 1.1 2.5 6.7 9.3 14.4 19.5 20.5 20.8 15.5 10.3 5.8 -1.1 10.4 2005 -1.9 -1.0 5.9 10.5 14.0 19.3 23.1 20.6 17.4 11.6 3.7 1.9 10.4 MEAN -1.7 0.3 4.0 10.0 14.2 18.9 21.7 19.9 16.0 10.4 4.3 0.1 9.8 =============================================================================================== TEHRAN 2006,MAY M.(S & A) STATION NAEIN (40801) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) FORM 3 LATITUDE 32 51 N LONGITUDE 53 5 E DATA PROCESSING CENTER ELEVATION 1549.0 M AVERAGE OF MAXIMUM TEMPERATURE IN C. YEAR JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL 1992 ***** ***** 12.4 21.3 24.2 33.0 36.1 32.7 29.1 23.6 18.7 10.1 ****** 1993 6.4 11.5 14.3 22.8 27.3 34.0 34.7 34.2 31.6 22.0 15.6 13.2 22.3 1994 11.8 11.9 17.5 23.2 27.8 34.2 37.0 36.7 27.6 22.1 18.7 10.6 23.2 1995 12.7 12.6 16.5 21.7 26.2 32.4 37.9 36.5 31.3 23.6 19.2 7.9 23.2 1996 5.9 12.5 13.9 22.2 27.5 33.7 33.4 34.5 33.1 23.9 15.0 13.9 22.5 1997 11.2 12.1 13.8 21.9 27.5 32.8 38.6 36.5 31.4 25.7 15.0 11.2 23.1 1998 9.2 10.6 16.9 24.8 28.4 33.5 36.1 35.3 31.9 24.9 21.1 17.7 24.2 1999 8.5 15.5 14.9 23.1 29.8 35.7 34.9 34.8 32.3 26.2 16.2 12.8 23.7 2000 10.3 12.3 17.1 26.9 32.3 34.3 35.1 35.0 32.2 23.5 13.4 11.4 23.6 2001 8.8 13.3 19.1 26.5 30.6 34.2 35.7 35.3 31.2 26.3 18.2 13.5 24.4 2002 10.1 14.0 19.4 22.4 29.6 33.7 35.8 36.8 33.5 27.4 15.9 10.1 24.1 2003 11.0 14.6 16.8 24.0 26.8 34.6 39.0 35.0 31.2 26.9 16.2 10.6 23.9 2004 11.4 15.9 19.0 22.0 28.9 34.5 34.7 36.7 30.7 25.1 18.6 9.2 23.9 2005 9.1 9.7 18.8 24.3 27.5 34.2 37.4 35.3 33.2 26.1 16.1 14.5 23.8 MEAN 9.7 12.8 16.5 23.4 28.2 33.9 36.2 35.4 31.5 24.8 17.0 11.9 23.4 =============================================================================================== TEHRAN 2006,MAY M.(S & A) STATION NAEIN (40801) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) FORM 4 LATITUDE 32 51 N LONGITUDE 53 5 E DATA PROCESSING CENTER ELEVATION 1549.0 M DIFFERENCE BETWEEN AVERAGE MAXIMUM AND MINIMUM TEMPERATURE IN C. YEAR JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL 1992 ***** ***** 11.7 13.2 12.1 14.7 15.4 14.3 15.4 15.3 13.4 10.0 ****** 1993 9.2 11.3 11.5 13.3 13.9 16.4 14.7 15.6 16.1 14.2 11.9 13.6 13.5 1994 12.6 13.2 12.7 13.0 13.5 15.2 14.6 15.6 14.8 12.1 11.7 13.6 13.5 1995 13.6 12.5 13.3 12.0 12.8 14.0 15.2 16.2 15.6 14.8 15.9 11.2 13.9 1996 11.5 10.8 10.6 12.6 13.0 14.7 13.4 15.1 16.1 15.1 12.9 13.4 13.3 1997 11.9 14.5 11.7 13.4 13.7 13.4 14.9 16.4 15.3 13.2 10.8 11.4 13.3 1998 11.1 10.9 12.0 14.4 14.3 15.5 14.1 14.7 15.4 15.2 15.3 14.0 13.9 1999 10.0 12.6 10.7 13.4 15.1 15.7 13.8 15.5 15.5 14.8 11.8 13.1 13.5 2000 12.4 13.2 13.7 15.1 16.0 16.1 15.4 15.7 14.6 14.2 10.3 10.6 13.9 2001 11.9 13.4 13.4 15.2 15.0 15.2 14.0 15.6 14.8 14.5 13.8 10.7 14.0 2002 11.5 12.9 14.9 11.6 14.6 14.4 14.4 15.6 16.5 15.0 11.4 10.7 13.7 2003 11.4 13.3 13.0 13.3 14.2 15.3 14.8 15.0 15.5 14.4 13.8 10.6 13.7 2004 10.3 13.4 12.3 12.7 14.5 15.0 14.2 15.9 15.2 14.8 12.8 10.3 13.5 2005 11.0 10.7 12.9 13.8 13.5 14.9 14.3 14.7 15.8 14.5 12.4 12.6 13.4 MEAN 11.4 12.5 12.5 13.4 14.0 15.0 14.5 15.5 15.5 14.4 12.7 11.8 13.6 =============================================================================================== TEHRAN 2006,MAY M.(S & A) STATION NAEIN (40801) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) FORM 5 LATITUDE 32 51 N LONGITUDE 53 5 E DATA PROCESSING CENTER ELEVATION 1549.0 M AVERAGE OF MEAN DAILY TEMPERATURE IN C. YEAR JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL 1992 ***** ***** 6.5 14.7 18.2 25.7 28.4 25.5 21.4 15.9 12.0 5.1 ****** 1993 1.8 5.8 8.5 16.2 20.3 25.8 27.3 26.4 23.6 14.9 9.7 6.4 15.6 1994 5.5 5.3 11.1 16.7 21.0 26.6 29.7 28.9 20.2 16.0 12.9 3.8 16.5 1995 5.9 6.4 9.9 15.7 19.8 25.4 30.3 28.4 23.5 16.2 11.3 2.3 16.2 1996 0.1 7.1 8.6 15.9 21.0 26.3 26.7 26.9 25.1 16.4 8.6 7.2 15.8 1997 5.3 4.8 7.9 15.2 20.6 26.1 31.2 28.3 23.8 19.1 9.6 5.5 16.5 1998 3.7 5.2 10.9 17.6 21.2 25.8 29.0 27.9 24.2 17.3 13.5 10.7 17.2 1999 3.5 9.2 9.5 16.4 22.3 27.9 28.0 27.1 24.6 18.8 10.3 6.3 17.0 2000 4.1 5.7 10.3 19.4 24.3 26.2 27.4 27.1 24.9 16.4 8.3 6.1 16.7 2001 2.8 6.6 12.4 18.9 23.1 26.6 28.7 27.5 23.8 19.1 11.3 8.1 17.4 2002 4.3 7.6 12.0 16.6 22.3 26.5 28.6 29.0 25.3 19.9 10.2 4.7 17.2 2003 5.3 8.0 10.3 17.4 19.7 26.9 31.6 27.5 23.4 19.7 9.3 5.3 17.0 2004 6.2 9.2 12.9 15.6 21.6 27.0 27.6 28.8 23.1 17.7 12.2 4.0 17.2 2005 3.6 4.4 12.4 17.4 20.7 26.7 30.3 27.9 25.3 18.8 9.9 8.2 17.1 MEAN 4.0 6.6 10.2 16.7 21.2 26.4 28.9 27.7 23.7 17.6 10.6 6.0 16.6 SD 1.73 1.58 1.87 1.33 1.53 0.65 1.49 1.00 1.45 1.63 1.58 2.13 1.50 =============================================================================================== TEHRAN 2006,MAY M.(S & A) STATION NAEIN (40801) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) FORM 6 LATITUDE 32 51 N LONGITUDE 53 5 E DATA PROCESSING CENTER ELEVATION 1549.0 M TEMPERATURE RECORDS LOWEST IN C. YEAR JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL 1992 ***** ***** -8.0 2.0 6.0 14.4 17.0 13.5 9.4 5.4 -6.2 -7.0 ****** DAY ** ** 13 2 3 9 27 31 12 29 27 29 1993 -9.0 -7.5 -3.6 4.2 8.0 14.0 16.4 14.4 12.0 1.5 -6.0 -5.2 -9.0 DAY 21 18 14 4 1 6 19 4 29 9 30 1 1994 -6.7 -6.2 0.0 1.0 9.8 15.0 19.5 17.8 7.5 4.6 0.0 -13.0 -13.0 DAY 11 4 16 5 2 9 2 22 22 10 14 8 1995 -7.0 -7.0 -4.4 3.5 9.0 11.8 19.0 16.4 9.5 3.6 -8.0 -10.4 -10.4 DAY 25 26 6 8 10 1 27 10 23 27 28 13 1996 -19.2 -3.5 -1.8 1.4 10.2 15.0 16.5 14.6 14.0 2.8 -5.6 -5.0 -19.2 DAY 15 6 1 5 3 18 14 4 28 20 19 4 1997 -5.6 -12.2 -6.0 -2.4 6.0 16.5 18.4 14.0 12.4 7.2 -1.2 -6.6 -12.2 DAY 19 8 9 12 6 2 1 30 10 28 30 28 1998 -6.6 -6.6 -5.0 3.4 5.8 15.4 17.5 17.4 12.4 5.8 2.0 -2.4 -6.6 DAY 14 17 3 8 3 1 26 8 17 23 25 23 1999 -15.0 -2.0 -2.4 4.0 10.0 17.4 16.8 16.6 10.0 6.8 -5.2 -5.2 -15.0 DAY 4 23 19 12 23 7 29 28 29 27 30 1 2000 -10.2 -6.8 -5.0 7.0 11.6 10.5 14.5 15.2 13.0 4.4 -1.0 -4.6 -10.2 DAY 15 9 10 1 12 14 20 21 26 5 29 17 2001 -18.0 -5.6 -2.4 6.4 10.2 14.4 14.0 15.0 11.4 7.0 -5.0 -3.6 -18.0 DAY 29 1 12 11 5 13 31 14 21 28 20 18 2002 -10.0 -4.8 -2.6 3.4 8.2 14.4 18.0 18.0 12.6 8.2 -2.0 -8.0 -10.0 DAY 22 5 11 6 5 9 31 1 30 26 30 24 2003 -13.0 -7.2 -6.8 3.2 5.4 14.6 21.0 15.4 11.4 9.6 -5.0 -10.4 -13.0 DAY 20 18 3 2 2 7 2 31 28 24 25 14 2004 -4.4 -2.4 -2.6 3.0 9.4 14.4 15.4 18.0 9.0 5.4 -4.8 -6.4 -6.4 DAY 1 4 16 18 15 1 22 28 28 29 29 4 2005 -11.0 -7.8 -2.0 -1.4 7.4 14.2 18.8 16.2 14.0 2.8 -0.8 -8.2 -11.0 DAY 13 11 27 7 7 1 30 31 28 25 26 31 1992-2005 -19.2 -12.2 -8.0 -2.4 5.4 10.5 14.0 13.5 7.5 1.5 -8.0 -13.0 -19.2 YEAR-DAY 96-15 97- 8 92-13 97-12 3- 2 0-14 1-31 92-31 94-22 93- 9 95-28 94- 8 96 =============================================================================================== TEHRAN 2006,MAY M.(S & A) STATION NAEIN (40801) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) FORM 7 LATITUDE 32 51 N LONGITUDE 53 5 E DATA PROCESSING CENTER ELEVATION 1549.0 M TEMPERATURE RECORDS HIGHEST IN C. YEAR JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL 1992 ***** ***** 18.5 27.4 31.0 38.0 40.0 37.4 33.2 27.2 22.6 17.0 ****** DAY ** ** 29 15 18 30 5 6 25 4 1 16 1993 16.0 19.5 20.6 29.0 33.6 38.6 38.6 38.4 35.2 31.8 24.2 18.8 38.6 DAY 28 28 31 21 27 18 4 22 3 1 1 18 1994 19.5 18.5 24.0 30.4 31.4 38.0 40.2 40.5 33.0 27.6 23.2 18.0 40.5 DAY 3 28 30 25 31 26 7 5 1 1 4 3 1995 19.0 18.5 24.0 27.4 31.0 38.0 40.8 39.2 36.0 30.5 24.5 14.0 40.8 DAY 17 22 25 3 7 22 13 6 9 3 3 22 1996 13.5 22.5 22.2 27.6 35.6 37.8 36.5 37.5 37.0 29.2 22.5 22.0 37.8 DAY 7 9 30 21 31 9 3 23 9 14 3 27 1997 16.4 21.6 19.2 28.5 33.5 36.6 41.2 41.0 36.2 31.8 21.4 17.6 41.2 DAY 7 22 31 28 28 16 14 15 1 3 4 8 1998 14.8 20.2 25.8 30.5 33.0 36.6 41.5 38.8 36.8 32.2 24.0 24.0 41.5 DAY 26 8 28 15 11 29 11 17 5 1 8 17 1999 16.0 21.6 22.2 27.5 35.0 39.6 40.5 37.0 36.6 30.2 22.6 17.8 40.5 DAY 9 8 31 8 31 29 4 30 1 5 19 29 2000 16.5 17.6 25.4 31.2 36.4 40.5 39.5 37.8 35.5 29.2 22.0 16.8 40.5 DAY 1 24 24 15 26 24 8 3 1 1 3 21 2001 17.6 19.6 26.2 30.4 36.4 39.8 41.4 38.2 36.0 31.6 25.4 20.5 41.4 DAY 14 20 31 28 15 29 10 24 10 1 7 29 2002 18.6 20.0 25.0 33.0 35.0 38.0 40.0 40.6 37.0 31.2 24.0 17.5 40.6 DAY 7 25 27 28 24 30 18 23 4 4 11 21 2003 21.0 20.6 23.4 30.6 31.0 40.5 41.0 37.6 35.2 30.8 24.4 20.0 41.0 DAY 13 20 19 10 22 24 29 7 9 2 1 18 2004 16.0 25.0 27.4 28.0 32.4 37.0 38.6 40.6 36.2 30.6 23.6 16.0 40.6 DAY 6 14 6 22 21 25 27 12 7 13 2 13 2005 17.6 19.8 23.8 31.6 30.8 40.0 41.4 40.4 36.4 30.0 23.6 22.0 41.4 DAY 1 20 11 25 16 22 16 8 5 9 2 4 1992-2005 21.0 25.0 27.4 33.0 36.4 40.5 41.5 41.0 37.0 32.2 25.4 24.0 41.5 YEAR-DAY 3-13 4-14 4- 6 2-28 0-26 0-24 98-11 97-15 96- 9 98- 1 1- 7 98-17 98 =============================================================================================== TEHRAN 2006,MAY M.(S & A) STATION NAEIN (40801) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) FORM 8 LATITUDE 32 51 N LONGITUDE 53 5 E DATA PROCESSING CENTER ELEVATION 1549.0 M 0C COOLING DEGREE DAYS (BASE 21) YEAR JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL 1992 ***** ***** 0.0 0.4 11.4 135.5 230.0 142.4 35.9 0.0 0.0 0.0 ****** 1993 0.0 0.0 0.0 1.5 32.3 144.1 196.7 167.3 79.1 1.3 0.0 0.0 622.4 1994 0.0 0.0 0.0 5.0 27.8 167.3 269.8 244.4 21.7 0.3 0.0 0.0 736.4 1995 0.0 0.0 0.0 0.0 14.5 134.9 287.5 229.9 84.5 4.7 0.0 0.0 756.1 1996 0.0 0.0 0.0 0.0 42.7 160.3 177.1 183.2 121.9 1.4 0.0 0.0 686.7 1997 0.0 0.0 0.0 0.5 31.6 152.5 315.2 226.6 86.6 18.2 0.0 0.0 831.4 1998 0.0 0.0 0.0 6.6 46.3 142.6 249.3 214.7 97.1 11.9 0.0 0.0 768.6 1999 0.0 0.0 0.0 0.0 55.6 206.4 218.5 188.3 114.1 3.6 0.0 0.0 786.7 2000 0.0 0.0 0.0 11.0 103.2 160.9 197.8 190.2 118.6 0.6 0.0 0.0 782.4 2001 0.0 0.0 0.0 3.4 72.7 169.1 239.3 202.3 93.2 3.5 0.0 0.0 783.7 2002 0.0 0.0 0.0 9.0 62.5 165.2 235.3 248.7 127.9 12.1 0.0 0.0 860.7 2003 0.0 0.0 0.0 9.2 16.6 178.4 328.3 201.3 81.1 9.1 0.0 0.0 824.1 2004 0.0 0.0 0.0 1.9 41.9 179.0 205.5 240.8 78.6 2.6 0.0 0.0 750.3 2005 0.0 0.0 0.0 15.2 22.0 171.9 286.9 214.2 129.6 7.9 0.0 0.0 847.7 MEAN 0.0 0.0 0.0 4.6 41.5 162.0 245.5 206.8 90.7 5.5 0.0 0.0 756.6 =============================================================================================== TEHRAN 2006,MAY M.(S & A) STATION NAEIN (40801) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) FORM 9 LATITUDE 32 51 N LONGITUDE 53 5 E DATA PROCESSING CENTER ELEVATION 1549.0 M 0C HEATING DEGREE DAYS (BASE 18) YEAR JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL 1992 ***** ***** 355.9 96.8 46.6 0.0 0.0 0.0 0.8 66.8 181.0 399.4 ****** 1993 501.1 341.0 292.9 71.6 14.0 0.0 0.0 0.0 0.0 104.6 250.9 358.9 1935.1 1994 388.3 355.8 213.2 70.0 1.9 0.0 0.0 0.0 9.8 67.6 154.2 440.8 1701.5 1995 375.2 325.7 252.5 75.8 15.4 0.0 0.0 0.0 0.5 86.9 201.6 486.5 1820.2 1996 554.1 315.0 291.0 75.4 6.1 0.0 0.0 0.0 0.0 60.4 283.1 334.8 1919.9 1997 394.3 368.6 312.2 94.3 9.0 0.0 0.0 0.0 0.0 21.5 251.4 387.2 1838.7 1998 443.9 359.1 221.0 55.6 21.1 0.0 0.0 0.0 0.0 58.0 135.7 226.0 1520.4 1999 450.7 246.0 262.4 58.8 0.4 0.0 0.0 0.0 0.0 17.1 230.2 364.1 1629.7 2000 430.9 357.1 240.4 19.7 0.0 0.0 0.0 0.0 0.0 57.7 291.6 368.9 1766.3 2001 470.5 319.5 174.9 13.3 0.0 0.0 0.0 0.0 0.2 10.0 200.8 305.6 1494.9 2002 423.9 292.5 187.4 75.2 3.4 0.0 0.0 0.0 0.0 9.6 232.7 411.3 1636.0 2003 394.0 281.0 238.0 55.8 17.2 0.0 0.0 0.0 0.0 0.7 260.3 393.2 1640.2 2004 365.2 255.2 165.2 81.2 4.9 0.0 0.0 0.0 0.0 39.6 174.7 432.6 1518.6 2005 445.5 381.8 177.1 70.1 3.2 0.0 0.0 0.0 0.0 35.5 243.2 303.4 1659.7 MEAN 433.7 323.0 241.7 65.2 10.2 0.0 0.0 0.0 0.8 45.4 220.8 372.4 1713.2 =============================================================================================== TEHRAN 2006,MAY M.(S & A) STATION NAEIN (40801) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) FORM 10 LATITUDE 32 51 N LONGITUDE 53 5 E DATA PROCESSING CENTER ELEVATION 1549.0 M AVERAGE OF DEW POINT TEMPERATURE IN C. YEAR JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL 1992 ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** -1.9 -0.9 ****** 1993 -4.1 -2.8 -5.9 -0.3 4.0 0.1 2.9 1.2 -2.1 -3.0 -4.0 -6.2 -1.7 1994 -6.7 -9.3 -3.2 -0.8 -0.3 3.0 8.9 0.9 -1.9 2.1 -2.3 -9.4 -1.6 1995 -2.1 -2.0 -5.2 -1.4 0.1 4.0 2.7 0.5 -1.0 -2.0 -4.5 -4.8 -1.3 1996 -6.2 -1.5 -0.6 0.3 6.4 6.8 7.3 7.6 3.7 1.4 -4.8 -5.4 1.3 1997 -4.7 -12.8 -6.1 -1.1 5.1 6.1 9.0 -2.1 -2.0 -0.8 -2.1 -3.7 -1.3 1998 -5.3 -5.0 -5.0 -5.9 -1.3 -3.5 3.1 3.4 -0.4 -5.0 -7.9 -9.1 -3.5 1999 -3.9 -6.4 -4.3 -2.0 -3.5 -4.0 3.1 -0.1 0.2 -2.2 -3.2 -7.3 -2.8 2000 -8.5 -8.3 -10.1 -4.9 -7.2 -2.5 2.0 5.1 3.1 -0.4 -1.7 -2.7 -3.0 2001 -7.1 -7.0 -3.1 -3.7 0.9 4.2 3.0 1.4 -1.6 -2.4 -5.4 -0.1 -1.8 2002 -5.5 -7.0 -7.1 1.3 -1.2 -3.2 0.6 1.3 3.0 -0.9 -1.5 -5.1 -2.1 2003 -6.7 -6.9 -4.4 0.2 -1.9 2.0 1.4 4.6 -1.0 -5.0 -6.6 -3.8 -2.3 2004 -2.1 -8.2 -4.0 -2.9 -0.3 -0.8 3.7 2.6 0.4 -3.4 -2.8 -6.7 -2.0 2005 -5.9 -5.5 -6.4 -3.5 -0.2 0.8 3.7 1.8 0.3 -2.8 -3.1 -5.4 -2.2 MEAN -5.3 -6.4 -5.0 -1.9 0.0 1.0 4.0 2.2 0.1 -1.9 -3.7 -5.0 -1.8 =============================================================================================== TEHRAN 2006,MAY M.(S & A) STATION NAEIN (40801) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) FORM 11 LATITUDE 32 51 N LONGITUDE 53 5 E DATA PROCESSING CENTER ELEVATION 1549.0 M AVERAGE OF MIXING RATIO IN G/KG YEAR JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL 1992 ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** 4.19 4.40 ***** 1993 3.48 3.96 3.17 4.73 6.20 4.82 5.74 5.09 4.08 3.82 3.67 2.95 4.31 1994 2.91 2.47 3.84 4.46 4.68 5.92 8.88 5.26 4.11 5.66 4.25 2.45 4.58 1995 4.12 4.09 3.39 4.60 4.89 6.30 5.79 5.01 4.38 4.04 3.47 3.29 4.45 1996 3.00 4.19 4.52 4.87 7.31 7.84 8.14 8.15 6.12 5.22 3.24 3.21 5.48 1997 3.34 1.85 3.15 4.51 6.77 7.22 8.84 4.19 4.10 4.44 4.02 3.55 4.66 1998 3.16 3.29 3.52 3.17 4.34 3.68 5.90 6.04 4.61 3.35 2.63 2.69 3.87 1999 3.57 3.06 3.61 4.31 3.64 3.58 5.99 4.58 4.76 3.93 3.77 2.77 3.96 2000 2.58 2.60 2.34 3.38 2.84 4.02 5.68 6.88 6.11 4.61 4.14 3.98 4.10 2001 2.80 2.80 3.78 3.59 5.12 6.74 5.94 5.29 4.13 3.93 3.18 4.77 4.34 2002 3.16 2.83 2.98 5.22 4.35 3.76 4.90 5.30 5.74 4.35 4.28 3.25 4.18 2003 2.98 2.92 3.55 4.91 4.25 5.41 5.27 6.53 4.38 3.23 3.04 3.65 4.18 2004 4.13 2.71 3.57 3.90 4.65 4.47 6.18 5.83 4.85 3.65 4.02 2.99 4.25 2005 3.08 3.13 3.23 3.79 4.73 5.06 6.08 5.34 4.81 3.78 3.74 3.19 4.16 MEAN 3.25 3.07 3.43 4.26 4.91 5.29 6.41 5.65 4.78 4.15 3.69 3.37 4.36 =============================================================================================== TEHRAN 2006,MAY M.(S & A) STATION NAEIN (40801) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) FORM 12 LATITUDE 32 51 N LONGITUDE 53 5 E DATA PROCESSING CENTER ELEVATION 1549.0 M AVERAGE OF VAPOUR PRESSURE IN HPA YEAR JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL 1992 ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** 5.66 5.92 ***** 1993 4.69 5.32 4.26 6.34 8.31 6.45 7.66 6.82 5.48 5.16 4.95 3.99 5.79 1994 3.93 3.32 5.16 6.00 6.28 7.88 11.75 7.02 5.54 7.62 5.72 3.31 6.13 1995 5.55 5.49 4.56 6.16 6.57 8.41 7.70 6.70 5.89 5.46 4.69 4.45 5.97 1996 4.05 5.62 6.05 6.54 9.78 10.43 10.84 10.86 8.19 7.03 4.40 4.34 7.34 1997 4.50 2.50 4.22 6.04 9.06 9.63 11.71 5.61 5.52 5.99 5.43 4.78 6.25 1998 4.25 4.43 4.73 4.26 5.83 4.94 7.87 8.09 6.19 4.53 3.56 3.65 5.19 1999 4.81 4.11 4.84 5.80 4.89 4.80 7.98 6.14 6.38 5.30 5.08 3.76 5.33 2000 3.48 3.50 3.15 4.55 3.82 5.37 7.59 9.18 8.16 6.22 5.60 5.36 5.50 2001 3.78 3.78 5.08 4.82 6.85 8.96 7.92 7.09 5.56 5.30 4.29 6.43 5.82 2002 4.26 3.82 4.00 6.99 5.83 5.04 6.56 7.08 7.71 5.88 5.78 4.39 5.61 2003 4.01 3.91 4.76 6.59 5.71 7.22 7.01 8.72 5.89 4.37 4.11 4.92 5.60 2004 5.55 3.65 4.81 5.24 6.23 5.98 8.25 7.77 6.52 4.94 5.43 4.02 5.70 2005 4.15 4.21 4.34 5.10 6.35 6.76 8.11 7.15 6.45 5.11 5.05 4.31 5.59 MEAN 4.38 4.13 4.61 5.72 6.58 7.07 8.53 7.56 6.42 5.61 4.98 4.54 5.85 =============================================================================================== TEHRAN 2006,MAY M.(S & A) STATION NAEIN (40801) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) FORM 13 LATITUDE 32 51 N LONGITUDE 53 5 E DATA PROCESSING CENTER ELEVATION 1549.0 M AVERAGE OF SATURATION DEFICIT PRESSURE IN HPA YEAR JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL 1992 ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** 10.99 4.04 ***** 1993 3.07 5.04 8.65 15.18 17.06 29.90 31.61 30.60 25.81 14.95 9.17 7.26 16.53 1994 6.65 7.35 10.38 16.84 23.18 34.60 38.35 41.81 23.56 12.97 11.08 6.25 19.42 1995 5.40 5.66 10.05 14.12 20.70 30.41 44.91 41.52 29.99 17.52 12.24 3.85 19.70 1996 3.39 5.67 6.49 14.86 20.04 31.14 31.02 33.04 31.76 15.77 9.16 7.55 17.49 1997 5.86 8.38 8.23 14.81 20.29 30.56 42.43 42.88 30.55 20.36 8.16 5.54 19.84 1998 4.69 5.86 10.57 20.19 24.76 36.49 40.33 37.17 31.12 20.36 15.28 11.11 21.49 1999 4.05 9.28 9.09 16.01 28.78 41.54 37.06 38.31 31.97 21.23 9.44 7.42 21.18 2000 6.18 7.27 12.01 23.03 34.20 33.86 32.06 33.70 29.98 16.29 6.85 5.15 20.05 2001 5.11 7.73 12.43 21.93 27.66 34.62 39.02 38.49 30.63 21.20 11.76 5.66 21.35 2002 5.25 8.61 13.29 15.02 27.00 37.02 39.41 41.65 32.68 22.45 8.63 5.27 21.36 2003 6.23 8.53 10.00 17.01 22.26 36.06 48.66 35.45 29.75 23.22 10.21 5.27 21.05 2004 4.63 9.99 13.25 15.31 24.37 37.12 35.49 40.42 28.61 19.84 11.07 5.08 20.43 2005 4.86 5.47 12.57 18.93 22.39 36.52 42.86 37.99 32.76 21.23 9.18 8.34 21.09 MEAN 5.03 7.30 10.54 17.17 24.05 34.60 38.71 37.93 29.94 19.03 10.23 6.27 20.07 =============================================================================================== TEHRAN 2006,MAY M.(S & A) STATION NAEIN (40801) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) FORM 14 LATITUDE 32 51 N LONGITUDE 53 5 E DATA PROCESSING CENTER ELEVATION 1549.0 M AVERAGE OF RELATIVE HUMIDITY IN PERCENT YEAR JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL 1992 *** *** *** *** *** *** *** *** *** *** 36 63 *** 1993 66 54 36 33 37 20 21 20 20 28 38 39 34 1994 41 35 37 30 24 20 25 15 21 40 37 36 30 1995 52 52 35 35 29 24 16 15 19 28 30 58 33 1996 60 56 54 33 37 27 27 26 22 34 36 39 38 1997 48 26 38 32 33 26 23 13 17 26 44 52 32 1998 52 49 38 21 24 13 18 20 19 22 21 29 27 1999 58 34 42 30 16 12 20 15 19 22 39 37 29 2000 40 37 24 18 11 16 20 22 23 32 49 55 29 2001 49 38 35 20 23 23 19 17 17 23 30 57 29 2002 50 35 26 37 21 13 16 16 20 23 45 49 29 2003 48 35 36 33 22 18 14 21 18 17 31 53 29 2004 58 30 35 29 23 15 21 17 20 22 35 48 29 2005 53 50 28 25 24 17 17 18 18 21 40 38 29 MEAN 52 41 36 29 25 19 20 18 19 26 37 47 30 =============================================================================================== TEHRAN 2006,MAY M.(S & A) STATION NAEIN (40801) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) FORM 15 LATITUDE 32 51 N LONGITUDE 53 5 E DATA PROCESSING CENTER ELEVATION 1549.0 M AVERAGE OF MAXIMUM RELATIVE HUMIDITY IN PERCENT YEAR JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL 1992 *** *** *** *** *** *** *** *** *** *** 50 75 *** 1993 76 69 51 51 57 31 31 30 31 38 54 55 48 1994 58 52 56 47 39 30 33 25 30 59 55 52 45 1995 65 68 54 56 46 40 26 22 31 43 44 72 47 1996 74 72 74 51 56 37 38 36 32 49 50 53 52 1997 63 39 55 50 47 38 31 19 27 40 64 71 45 1998 73 70 59 38 42 23 29 31 30 37 35 42 42 1999 77 58 63 50 28 20 31 23 30 34 57 53 44 2000 57 60 44 31 19 22 28 30 33 48 71 72 43 2001 65 58 55 34 37 32 28 27 27 37 43 70 43 2002 71 53 42 56 36 21 25 25 28 33 65 68 44 2003 62 54 55 54 35 28 21 30 28 27 46 68 42 2004 77 49 53 50 40 24 31 25 28 34 51 67 44 2005 73 73 46 40 40 26 25 26 26 30 60 56 43 MEAN 69 60 54 47 40 29 29 27 29 39 53 62 45 =============================================================================================== TEHRAN 2006,MAY M.(S & A) STATION NAEIN (40801) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) FORM 16 LATITUDE 32 51 N LONGITUDE 53 5 E DATA PROCESSING CENTER ELEVATION 1549.0 M AVERAGE OF MINIMUM RELATIVE HUMIDITY IN PERCENT YEAR JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL 1992 *** *** *** *** *** *** *** *** *** *** 28 51 *** 1993 56 43 25 23 22 12 14 13 12 21 27 27 25 1994 28 23 25 21 15 15 20 11 15 28 24 25 21 1995 42 41 24 23 19 16 11 11 13 19 22 46 24 1996 48 42 41 24 27 21 22 21 17 26 27 28 29 1997 36 17 26 22 25 19 18 9 12 18 31 37 23 1998 36 35 25 11 14 9 13 14 13 14 14 18 18 1999 44 21 30 18 11 8 14 11 14 15 28 26 20 2000 27 23 13 11 6 10 13 18 17 22 37 42 20 2001 37 24 24 13 15 19 14 12 13 15 21 46 21 2002 36 24 17 26 13 9 11 11 17 17 32 34 21 2003 36 21 24 22 16 13 10 17 13 11 21 42 21 2004 40 19 26 18 15 11 16 13 16 16 25 32 21 2005 37 34 17 16 16 13 13 13 14 16 28 26 20 MEAN 39 28 24 19 16 13 15 13 14 18 26 34 22 RH=0 =====> RELATIVE HUMIDITY < 0.5% =============================================================================================== TEHRAN 2006,MAY M.(S & A) STATION NAEIN (40801) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) FORM 17 LATITUDE 32 51 N LONGITUDE 53 5 E DATA PROCESSING CENTER ELEVATION 1549.0 M AVERAGE OF RELATIVE HUMIDITY AT 03 UTC. IN PERCENT YEAR JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL 1992 *** *** *** *** *** *** *** *** *** *** 50 72 *** 1993 74 66 49 50 48 28 29 28 26 37 51 52 45 1994 54 48 54 46 38 30 33 24 30 58 51 48 43 1995 61 65 53 53 45 40 26 21 30 42 44 68 46 1996 72 69 73 50 56 37 38 35 32 49 49 51 51 1997 61 38 53 47 46 38 31 19 27 40 64 67 44 1998 70 68 57 37 41 23 29 31 30 37 34 39 41 1999 73 56 61 48 28 20 31 23 29 34 56 50 42 2000 53 58 43 31 19 21 27 30 33 48 70 70 42 2001 64 57 53 34 36 31 28 26 27 37 41 69 42 2002 69 53 41 53 35 21 25 25 28 33 64 65 43 2003 59 53 52 53 35 28 21 30 28 27 45 65 41 2004 73 46 52 48 39 24 31 25 28 34 50 65 43 2005 70 72 45 39 40 26 25 26 26 30 59 56 43 MEAN 66 58 53 45 39 28 29 26 29 39 52 60 44 =============================================================================================== TEHRAN 2006,MAY M.(S & A) STATION NAEIN (40801) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) FORM 18 LATITUDE 32 51 N LONGITUDE 53 5 E DATA PROCESSING CENTER ELEVATION 1549.0 M AVERAGE OF RELATIVE HUMIDITY AT 09 UTC. IN PERCENT YEAR JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL 1992 *** *** *** *** *** *** *** *** *** *** 30 57 *** 1993 61 47 29 27 26 15 16 14 13 23 32 30 28 1994 33 27 31 24 19 17 23 13 18 32 29 29 25 1995 46 46 28 30 22 20 14 13 15 22 24 51 28 1996 53 48 46 27 31 25 24 23 20 28 28 31 32 1997 39 21 31 27 28 22 20 10 14 20 33 42 26 1998 42 42 30 16 17 11 15 16 15 17 15 22 22 1999 50 24 34 25 13 9 18 12 15 17 31 27 23 2000 33 28 17 14 9 12 15 20 19 25 41 46 23 2001 41 31 29 16 19 21 16 15 14 18 24 50 25 2002 41 29 21 31 15 11 13 13 18 18 36 40 24 2003 41 27 29 26 17 16 12 19 15 13 24 47 24 2004 48 23 29 22 19 13 18 15 18 17 28 38 24 2005 42 41 22 20 20 15 15 15 15 18 31 29 24 MEAN 44 33 29 23 20 16 17 15 16 21 29 39 25 =============================================================================================== TEHRAN 2006,MAY M.(S & A) STATION NAEIN (40801) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) FORM 19 LATITUDE 32 51 N LONGITUDE 53 5 E DATA PROCESSING CENTER ELEVATION 1549.0 M AVERAGE OF RELATIVE HUMIDITY AT 15 UTC. IN PERCENT YEAR JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL 1992 *** *** *** *** *** *** *** *** *** *** 37 67 *** 1993 67 52 33 28 28 14 15 14 15 27 40 43 31 1994 43 36 35 26 20 16 22 13 19 41 37 38 29 1995 55 50 31 31 25 18 12 13 16 25 29 63 31 1996 63 54 48 29 34 25 24 23 20 32 37 41 36 1997 49 22 35 28 30 23 20 10 15 25 42 55 30 1998 55 44 34 16 19 10 15 17 15 20 22 33 25 1999 57 31 38 27 12 9 15 12 16 22 40 41 27 2000 42 32 18 14 8 11 15 20 20 30 49 58 26 2001 50 31 31 16 18 21 15 15 15 20 32 58 27 2002 50 31 22 33 19 10 12 13 19 21 44 48 27 2003 48 30 30 29 19 14 11 18 15 16 30 53 26 2004 60 27 32 25 19 13 18 14 18 20 33 47 27 2005 54 44 22 21 19 13 15 14 15 18 36 34 25 MEAN 53 37 31 25 21 15 16 15 17 24 36 49 28 =============================================================================================== TEHRAN 2006,MAY M.(S & A) STATION NAEIN (40801) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) FORM 20 LATITUDE 32 51 N LONGITUDE 53 5 E DATA PROCESSING CENTER ELEVATION 1549.0 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 1992 *** *** 0 0 5 27 31 27 14 0 0 0 *** 1993 0 0 0 0 10 27 31 29 24 2 0 0 123 1994 0 0 0 1 8 29 31 31 6 0 0 0 106 1995 0 0 0 0 3 23 31 31 25 3 0 0 116 1996 0 0 0 0 10 30 31 30 27 0 0 0 128 1997 0 0 0 0 9 28 31 31 21 4 0 0 124 1998 0 0 0 2 13 30 29 31 23 7 0 0 135 1999 0 0 0 0 16 30 29 31 23 3 0 0 132 2000 0 0 0 4 26 26 31 31 27 0 0 0 145 2001 0 0 0 1 18 25 31 30 22 2 0 0 129 2002 0 0 0 2 17 28 31 31 27 7 0 0 143 2003 0 0 0 3 4 29 31 31 21 3 0 0 122 2004 0 0 0 0 11 28 28 31 15 2 0 0 115 2005 0 0 0 4 4 26 31 30 30 1 0 0 126 MEAN 0.0 0.0 0.0 1.2 11.0 27.6 30.5 30.4 21.8 2.4 0.0 0.0 124.9 =============================================================================================== TEHRAN 2006,MAY M.(S & A) STATION NAEIN (40801) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) FORM 21 LATITUDE 32 51 N LONGITUDE 53 5 E DATA PROCESSING CENTER ELEVATION 1549.0 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 1992 *** *** 0 0 0 0 0 0 0 0 0 0 *** 1993 2 0 0 0 0 0 0 0 0 0 0 0 2 1994 0 0 0 0 0 0 0 0 0 0 0 1 1 1995 0 0 0 0 0 0 0 0 0 0 0 0 0 1996 7 0 0 0 0 0 0 0 0 0 0 0 7 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 1 0 0 0 0 0 0 0 0 0 0 0 1 2000 0 0 0 0 0 0 0 0 0 0 0 0 0 2001 2 0 0 0 0 0 0 0 0 0 0 0 2 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 1 1 0 0 0 0 0 0 0 0 0 0 2 MEAN 1.0 0.1 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.1 1.2 =============================================================================================== TEHRAN 2006,MAY M.(S & A) STATION NAEIN (40801) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) FORM 22 LATITUDE 32 51 N LONGITUDE 53 5 E DATA PROCESSING CENTER ELEVATION 1549.0 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 1992 *** *** 0 0 0 6 14 3 0 0 0 0 *** 1993 0 0 0 0 0 1 9 2 0 0 0 0 12 1994 0 0 0 0 0 4 24 13 0 0 0 0 41 1995 0 0 0 0 0 2 26 10 0 0 0 0 38 1996 0 0 0 0 0 4 12 4 0 0 0 0 20 1997 0 0 0 0 0 6 29 13 1 1 0 0 50 1998 0 0 0 0 0 0 20 13 0 0 0 0 33 1999 0 0 0 0 0 10 15 2 0 0 0 0 27 2000 0 0 0 0 1 3 16 7 4 0 0 0 31 2001 0 0 0 0 1 9 18 10 0 0 0 0 38 2002 0 0 0 0 1 8 24 19 0 0 0 0 52 2003 0 0 0 0 0 7 31 6 0 0 0 0 44 2004 0 0 0 0 0 8 16 14 0 0 0 0 38 2005 0 0 0 0 0 10 25 16 0 0 0 0 51 MEAN 0.0 0.0 0.0 0.0 0.2 5.6 19.9 9.4 0.4 0.1 0.0 0.0 35.6 =============================================================================================== TEHRAN 2006,MAY M.(S & A) STATION NAEIN (40801) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) FORM 23 LATITUDE 32 51 N LONGITUDE 53 5 E DATA PROCESSING CENTER ELEVATION 1549.0 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 1992 *** *** 3 0 0 0 0 0 0 0 2 2 *** 1993 12 3 0 0 0 0 0 0 0 0 2 2 19 1994 6 9 0 0 0 0 0 0 0 0 0 14 29 1995 6 3 1 0 0 0 0 0 0 0 4 12 26 1996 16 0 0 0 0 0 0 0 0 0 1 2 19 1997 5 12 3 0 0 0 0 0 0 0 0 3 23 1998 10 4 1 0 0 0 0 0 0 0 0 0 15 1999 5 0 0 0 0 0 0 0 0 0 1 2 8 2000 11 5 2 0 0 0 0 0 0 0 0 2 20 2001 7 2 0 0 0 0 0 0 0 0 1 0 10 2002 11 1 0 0 0 0 0 0 0 0 0 10 22 2003 3 1 2 0 0 0 0 0 0 0 2 7 15 2004 2 0 0 0 0 0 0 0 0 0 1 8 11 2005 6 10 0 0 0 0 0 0 0 0 0 4 20 MEAN 7.7 3.8 0.9 0.0 0.0 0.0 0.0 0.0 0.0 0.0 1.0 4.9 18.3 =============================================================================================== TEHRAN 2006,MAY M.(S & A) STATION NAEIN (40801) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) FORM 24 LATITUDE 32 51 N LONGITUDE 53 5 E DATA PROCESSING CENTER ELEVATION 1549.0 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 1992 *** *** 15 0 0 0 0 0 0 0 3 19 *** 1993 28 13 8 0 0 0 0 0 0 0 7 18 74 1994 22 21 1 0 0 0 0 0 0 0 1 20 65 1995 22 17 7 0 0 0 0 0 0 0 6 29 81 1996 28 9 2 0 0 0 0 0 0 0 5 16 60 1997 19 21 7 2 0 0 0 0 0 0 2 19 70 1998 21 19 7 0 0 0 0 0 0 0 0 2 49 1999 21 6 3 0 0 0 0 0 0 0 2 19 51 2000 22 22 9 0 0 0 0 0 0 0 5 14 72 2001 25 17 2 0 0 0 0 0 0 0 4 5 53 2002 21 14 6 0 0 0 0 0 0 0 6 20 67 2003 15 12 7 0 0 0 0 0 0 0 10 16 60 2004 13 10 3 0 0 0 0 0 0 0 4 18 48 2005 20 18 3 2 0 0 0 0 0 0 3 7 53 MEAN 21.3 15.3 5.7 0.3 0.0 0.0 0.0 0.0 0.0 0.0 4.1 15.9 62.6 =============================================================================================== TEHRAN 2006,MAY M.(S & A) STATION NAEIN (40801) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) FORM 25 LATITUDE 32 51 N LONGITUDE 53 5 E DATA PROCESSING CENTER ELEVATION 1549.0 M MONTHLY TOTAL OF PRECIPITATION IN MM. YEAR JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL 1992 ***** ***** 17.0 19.9 20.3 0.7 0.0 0.0 0.0 0.0 0.0 25.0 ****** 1993 52.0 30.4 7.9 6.6 8.4 0.0 0.1 0.0 0.0 0.0 5.0 0.7 111.1 1994 6.0 11.2 26.7 18.4 5.0 0.0 0.0 0.0 0.0 11.8 8.0 0.0 87.1 1995 0.0 0.6 16.6 43.1 32.1 0.6 0.0 0.0 1.1 0.0 0.0 32.4 126.5 1996 18.8 39.2 40.5 2.4 35.4 10.1 0.0 0.0 0.0 3.0 0.0 6.0 155.4 1997 5.6 0.0 13.8 9.1 10.7 3.8 0.0 0.0 0.0 6.5 5.9 24.2 79.6 1998 19.8 37.7 21.5 3.0 17.0 0.0 1.1 1.7 0.1 0.9 0.0 5.0 107.8 1999 50.2 10.1 85.6 22.8 0.0 0.0 0.0 0.0 0.8 0.0 6.7 5.0 181.2 2000 19.2 2.9 2.0 0.0 0.0 0.0 0.0 0.0 0.0 2.6 14.8 24.7 66.2 2001 14.1 1.6 22.7 0.0 1.7 0.3 0.0 0.0 0.0 0.0 0.6 14.0 55.0 2002 26.0 7.2 5.3 22.5 0.4 0.0 0.0 0.0 0.0 0.0 21.3 9.0 91.7 2003 25.3 2.5 3.0 15.0 1.6 0.0 0.0 0.0 0.0 0.0 0.0 12.0 59.4 2004 35.8 3.0 21.6 3.0 2.0 0.0 6.0 0.0 0.0 0.0 3.6 16.1 91.1 2005 23.9 10.2 0.2 3.0 5.6 0.0 0.8 0.9 0.0 0.0 4.0 4.0 52.6 MEAN 22.8 12.0 20.3 12.1 10.0 1.1 0.6 0.2 0.1 1.8 5.0 12.7 98.7 =============================================================================================== TEHRAN 2006,MAY M.(S & A) STATION NAEIN (40801) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) FORM 26 LATITUDE 32 51 N LONGITUDE 53 5 E DATA PROCESSING CENTER ELEVATION 1549.0 M GREATEST DAILY OF PRECIPITATION IN MM. YEAR JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL 1992 ***** ***** 14.0 11.0 8.0 0.7 0.0 0.0 0.0 0.0 0.0 11.0 ****** DAY ** ** 21 7 7 8 ** ** ** ** ** 4 1993 12.0 11.0 4.0 2.0 3.0 0.0 0.1 0.0 0.0 0.0 3.0 0.7 12.0 DAY 7 3 18 23 5 ** 28 ** ** ** 26 16 1994 5.0 5.0 13.0 18.0 4.0 0.0 0.0 0.0 0.0 4.0 6.0 0.0 18.0 DAY 24 19 12 11 1 ** ** ** ** 22 17 ** 1995 0.0 0.6 10.0 18.0 19.0 0.6 0.0 0.0 0.6 0.0 0.0 13.0 19.0 DAY ** 7 22 22 29 4 ** ** 16 ** ** 12 1996 11.0 14.0 17.0 0.7 9.0 9.0 0.0 0.0 0.0 3.0 0.0 4.0 17.0 DAY 12 5 4 15 7 29 ** ** ** 17 ** 23 1997 4.0 0.0 6.0 5.0 9.0 2.0 0.0 0.0 0.0 5.0 5.0 16.0 16.0 DAY 17 ** 13 24 21 19 ** ** ** 24 13 21 1998 9.0 18.0 7.0 2.0 6.0 0.0 0.6 1.0 0.1 0.9 0.0 2.0 18.0 DAY 5 12 9 6 3 ** 17 4 14 11 ** 3 1999 17.0 10.1 35.1 11.0 0.0 0.0 0.0 0.0 0.8 0.0 6.0 4.2 35.1 DAY 25 6 2 10 ** ** ** ** 28 ** 9 12 2000 14.0 1.0 2.0 0.0 0.0 0.0 0.0 0.0 0.0 2.6 8.0 12.0 14.0 DAY 29 8 25 ** ** ** ** ** ** 4 6 10 2001 9.0 1.3 8.0 0.0 1.0 0.3 0.0 0.0 0.0 0.0 0.6 7.0 9.0 DAY 27 11 11 ** 3 16 ** ** ** ** 29 2 2002 11.0 7.0 4.3 10.0 0.4 0.0 0.0 0.0 0.0 0.0 11.0 8.0 11.0 DAY 12 20 21 12 3 ** ** ** ** ** 7 2 2003 7.0 1.0 1.9 7.0 1.4 0.0 0.0 0.0 0.0 0.0 0.0 4.0 7.0 DAY 19 5 26 23 29 ** ** ** ** ** ** 6 2004 11.0 3.0 8.0 1.0 2.0 0.0 4.0 0.0 0.0 0.0 2.0 7.0 11.0 DAY 8 7 15 4 5 ** 13 ** ** ** 14 15 2005 11.1 5.0 0.2 2.0 3.0 0.0 0.8 0.6 0.0 0.0 2.0 3.0 11.1 DAY 12 27 14 12 15 ** 24 12 ** ** 9 18 1992-2005 17.0 18.0 35.1 18.0 19.0 9.0 4.0 1.0 0.8 5.0 11.0 16.0 35.1 YEAR-DAY 99-25 98-12 99- 2 94-11 95-29 96-29 4-13 98- 4 99-28 97-24 2- 7 97-21 99 =============================================================================================== TEHRAN 2006,MAY M.(S & A) STATION NAEIN (40801) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) FORM 27 LATITUDE 32 51 N LONGITUDE 53 5 E DATA PROCESSING CENTER ELEVATION 1549.0 M NO. OF DAYS WITH PRECIPITATION EQUAL TO OR GREATER THAN 10 MM. YEAR JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL 1992 *** *** 1 1 0 0 0 0 0 0 0 1 *** 1993 3 2 0 0 0 0 0 0 0 0 0 0 5 1994 0 0 1 1 0 0 0 0 0 0 0 0 2 1995 0 0 1 2 1 0 0 0 0 0 0 1 5 1996 1 2 1 0 0 0 0 0 0 0 0 0 4 1997 0 0 0 0 0 0 0 0 0 0 0 1 1 1998 0 2 0 0 0 0 0 0 0 0 0 0 2 1999 2 1 3 1 0 0 0 0 0 0 0 0 7 2000 1 0 0 0 0 0 0 0 0 0 0 1 2 2001 0 0 0 0 0 0 0 0 0 0 0 0 0 2002 1 0 0 1 0 0 0 0 0 0 1 0 3 2003 0 0 0 0 0 0 0 0 0 0 0 0 0 2004 1 0 0 0 0 0 0 0 0 0 0 0 1 2005 1 0 0 0 0 0 0 0 0 0 0 0 1 MEAN 0.8 0.5 0.5 0.4 0.1 0.0 0.0 0.0 0.0 0.0 0.1 0.3 2.7 =============================================================================================== TEHRAN 2006,MAY M.(S & A) STATION NAEIN (40801) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) FORM 28 LATITUDE 32 51 N LONGITUDE 53 5 E DATA PROCESSING CENTER ELEVATION 1549.0 M NO. OF DAYS WITH PRECIPITATION EQUAL TO OR GREATER THAN 5 MM. YEAR JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL 1992 *** *** 1 2 1 0 0 0 0 0 0 1 *** 1993 5 3 0 0 0 0 0 0 0 0 0 0 8 1994 1 1 2 1 0 0 0 0 0 0 1 0 6 1995 0 0 1 3 2 0 0 0 0 0 0 3 9 1996 1 3 3 0 4 1 0 0 0 0 0 0 12 1997 0 0 1 1 1 0 0 0 0 1 1 2 7 1998 2 3 2 0 2 0 0 0 0 0 0 0 9 1999 3 1 6 2 0 0 0 0 0 0 1 0 13 2000 1 0 0 0 0 0 0 0 0 0 1 3 5 2001 1 0 2 0 0 0 0 0 0 0 0 1 4 2002 3 1 0 3 0 0 0 0 0 0 1 1 9 2003 3 0 0 1 0 0 0 0 0 0 0 0 4 2004 3 0 3 0 0 0 0 0 0 0 0 1 7 2005 2 1 0 0 0 0 0 0 0 0 0 0 3 MEAN 1.9 1.0 1.5 0.9 0.7 0.1 0.0 0.0 0.0 0.1 0.4 0.9 7.5 =============================================================================================== TEHRAN 2006,MAY M.(S & A) STATION NAEIN (40801) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) FORM 29 LATITUDE 32 51 N LONGITUDE 53 5 E DATA PROCESSING CENTER ELEVATION 1549.0 M NO. OF DAYS WITH PRECIPITATION EQUAL TO OR GREATER THAN 1 MM. YEAR JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL 1992 *** *** 2 3 6 0 0 0 0 0 0 6 *** 1993 8 5 2 3 2 0 0 0 0 0 2 0 22 1994 2 3 5 1 2 0 0 0 0 5 3 0 21 1995 0 0 3 7 4 0 0 0 0 0 0 4 18 1996 4 7 7 0 7 1 0 0 0 1 0 2 29 1997 2 0 4 2 2 1 0 0 0 2 1 5 19 1998 4 3 6 2 4 0 0 1 0 0 0 3 23 1999 7 1 6 4 0 0 0 0 0 0 1 1 20 2000 3 1 1 0 0 0 0 0 0 1 4 4 14 2001 2 1 5 0 1 0 0 0 0 0 0 4 13 2002 4 1 1 3 0 0 0 0 0 0 6 2 17 2003 6 1 1 4 1 0 0 0 0 0 0 5 18 2004 7 1 3 3 1 0 2 0 0 0 2 3 22 2005 4 3 0 1 2 0 0 0 0 0 3 2 15 MEAN 4.1 2.1 3.3 2.4 2.3 0.1 0.1 0.1 0.0 0.6 1.6 2.9 19.6 =============================================================================================== TEHRAN 2006,MAY M.(S & A) STATION NAEIN (40801) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) FORM 30 LATITUDE 32 51 N LONGITUDE 53 5 E DATA PROCESSING CENTER ELEVATION 1549.0 M NO. OF DAYS WITH PRECIPITATION YEAR JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL 1992 *** *** 2 5 7 1 0 0 0 0 0 8 *** 1993 13 7 4 6 6 0 1 0 0 0 2 1 40 1994 3 4 7 4 3 0 0 0 0 9 3 0 33 1995 1 4 4 8 4 1 0 0 2 0 0 6 30 1996 7 12 10 5 9 3 0 0 0 1 0 2 49 1997 3 0 6 5 3 4 0 0 0 3 3 7 34 1998 5 5 7 2 4 0 2 2 1 1 0 3 32 1999 10 1 8 5 0 0 1 0 1 1 2 3 32 2000 5 5 1 0 0 0 0 0 0 1 7 9 28 2001 4 2 6 0 2 1 0 0 0 0 1 9 25 2002 5 3 3 5 1 0 0 0 0 0 7 2 26 2003 7 4 4 5 2 0 0 0 0 0 0 6 28 2004 11 2 7 4 1 0 2 0 0 0 3 9 39 2005 6 8 4 4 6 0 2 2 0 0 5 2 39 MEAN 6.2 4.4 5.2 4.1 3.4 0.7 0.6 0.3 0.3 1.1 2.4 4.8 33.5 =============================================================================================== TEHRAN 2006,MAY M.(S & A) STATION NAEIN (40801) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) FORM 31 LATITUDE 32 51 N LONGITUDE 53 5 E DATA PROCESSING CENTER ELEVATION 1549.0 M NO. OF DAYS WITH THUNDER STORM YEAR JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL 1992 *** *** 0 3 3 1 0 0 0 0 0 0 *** 1993 0 0 0 1 3 0 0 0 0 0 0 0 4 1994 0 0 0 0 3 0 0 0 0 0 0 0 3 1995 0 0 0 2 2 0 0 0 0 0 0 0 4 1996 0 0 1 0 3 0 0 0 0 0 0 0 4 1997 0 0 0 0 1 0 0 0 0 1 0 0 2 1998 0 0 0 0 1 0 0 0 0 0 0 0 1 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 1 0 1 2001 0 0 0 0 0 0 0 0 0 0 0 0 0 2002 0 0 0 0 0 0 0 0 0 0 0 0 0 2003 0 0 0 0 0 0 0 0 0 0 0 0 0 2004 0 0 0 0 0 0 1 0 0 0 0 0 1 2005 0 0 0 1 3 0 1 0 0 0 0 0 5 MEAN 0.0 0.0 0.1 0.5 1.4 0.1 0.1 0.0 0.0 0.1 0.1 0.0 2.4 =============================================================================================== TEHRAN 2006,MAY M.(S & A) STATION NAEIN (40801) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) FORM 32 LATITUDE 32 51 N LONGITUDE 53 5 E DATA PROCESSING CENTER ELEVATION 1549.0 M NO. OF DAYS WITH SNOW OR SLEET YEAR JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL 1992 *** *** 0 0 0 0 0 0 0 0 0 2 *** 1993 8 2 0 0 0 0 0 0 0 0 0 0 10 1994 2 1 0 0 0 0 0 0 0 0 0 0 3 1995 0 0 0 0 0 0 0 0 0 0 0 3 3 1996 2 2 2 0 0 0 0 0 0 0 0 0 6 1997 1 0 2 0 0 0 0 0 0 0 0 2 5 1998 0 2 2 0 0 0 0 0 0 0 0 0 4 1999 2 0 0 0 0 0 0 0 0 0 0 0 2 2000 1 2 0 0 0 0 0 0 0 0 1 0 4 2001 2 2 1 0 0 0 0 0 0 0 0 0 5 2002 2 1 0 0 0 0 0 0 0 0 0 0 3 2003 2 0 0 0 0 0 0 0 0 0 0 1 3 2004 1 0 0 0 0 0 0 0 0 0 0 1 2 2005 3 2 0 0 0 0 0 0 0 0 0 0 5 MEAN 2.0 1.1 0.5 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.1 0.6 4.3 =============================================================================================== TEHRAN 2006,MAY M.(S & A) STATION NAEIN (40801) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) FORM 33 LATITUDE 32 51 N LONGITUDE 53 5 E DATA PROCESSING CENTER ELEVATION 1549.0 M NO. OF DAYS WITH DUST YEAR JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL 1992 *** *** 0 7 6 4 1 2 2 2 7 5 *** 1993 0 1 9 4 11 10 7 2 1 2 5 0 52 1994 4 4 6 8 11 9 3 1 1 0 3 4 54 1995 1 6 5 5 5 3 4 2 2 1 4 0 38 1996 1 0 4 5 2 0 0 0 2 1 0 0 15 1997 1 2 3 5 1 1 1 0 1 2 0 0 17 1998 0 2 1 2 2 0 0 0 0 0 0 0 7 1999 0 1 0 1 4 1 0 0 0 0 0 0 7 2000 0 0 6 4 2 0 0 0 0 0 0 0 12 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 1 1 2003 0 0 0 0 0 0 0 0 0 0 0 0 0 2004 0 0 0 1 0 1 1 0 0 1 1 0 5 2005 0 2 5 4 5 0 2 1 0 3 1 2 25 MEAN 0.5 1.4 2.8 3.3 3.5 2.1 1.4 0.6 0.6 0.9 1.5 0.9 19.5 =============================================================================================== TEHRAN 2006,MAY M.(S & A) STATION NAEIN (40801) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) FORM 34 LATITUDE 32 51 N LONGITUDE 53 5 E DATA PROCESSING CENTER ELEVATION 1549.0 M PREVAILING WIND DIRECTION , SPEED (IN KNOTS) AND PERCENT YEAR JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL 1992 *** *** 90 270 90 270 90 90 270 45 90 180 *** PREVAIL. DIRECT. ***** ***** 8.0 8.9 4.8 7.3 6.6 6.4 7.6 6.6 6.3 10.5 ***** PREVAIL. SPEED ***** ***** 11.0 23.3 20.0 24.0 36.1 35.1 20.7 20.8 13.3 18.7 ***** PREVAIL. PERCENT ***** ***** 61.3 12.7 27.1 16.7 14.2 12.3 20.7 31.8 32.0 34.8 ***** CALMS PERCENT **** **** 155 150 155 150 155 154 150 154 150 155 1528 WIND OBSER. NO. 1993 270 270 270 270 270 270 270 270 270 270 270 45 270 PREVAIL. DIRECT. 9.4 8.4 9.0 9.6 8.9 8.9 7.8 6.7 7.2 6.8 7.8 6.1 8.1 PREVAIL. SPEED 16.8 17.9 20.6 22.0 29.1 25.8 23.4 24.2 30.0 21.5 12.0 18.1 22.7 PREVAIL. PERCENT 42.6 31.4 18.1 28.0 23.1 27.1 27.4 26.6 27.9 41.2 44.0 43.9 30.8 CALMS PERCENT 155 140 155 150 247 240 248 248 240 177 150 155 2305 WIND OBSER. NO. 1994 270 270 270 270 270 270 45 45 45 45 180 270 270 PREVAIL. DIRECT. 7.0 7.1 9.6 8.6 9.5 9.1 9.8 9.3 8.6 6.1 12.5 8.1 8.2 PREVAIL. SPEED 19.4 22.9 14.8 16.0 21.3 22.7 33.5 29.7 27.3 21.3 24.7 12.9 17.8 PREVAIL. PERCENT 40.6 31.4 36.8 26.7 25.8 20.7 16.8 14.8 30.7 31.6 24.0 43.2 28.6 CALMS PERCENT 155 140 155 150 155 150 155 155 150 155 150 155 1825 WIND OBSER. NO. 1995 45 270 270 270 270 270 360 45 45 45 270 270 270 PREVAIL. DIRECT. 6.6 8.3 8.0 9.3 8.4 9.6 9.6 9.2 7.9 7.1 7.6 6.5 8.2 PREVAIL. SPEED 13.5 15.7 21.9 18.0 21.3 22.7 23.9 22.6 24.0 19.4 16.0 18.1 18.7 PREVAIL. PERCENT 44.5 32.1 32.9 24.7 16.8 8.7 6.5 17.4 11.3 25.8 39.3 60.6 26.7 CALMS PERCENT 155 140 155 150 155 150 155 155 150 155 150 155 1825 WIND OBSER. NO. 1996 270 270 45 180 270 45 360 45 270 270 45 270 270 PREVAIL. DIRECT. 7.3 8.7 6.3 12.3 7.0 8.4 9.2 8.5 8.4 8.7 6.7 7.2 7.9 PREVAIL. SPEED 23.9 23.4 11.6 14.1 20.8 20.0 25.8 21.3 22.0 19.4 22.0 16.1 18.2 PREVAIL. PERCENT 43.2 29.0 38.1 28.9 34.4 20.0 18.7 28.4 32.7 30.3 38.7 38.1 31.7 CALMS PERCENT 155 145 155 149 154 150 155 155 150 155 150 155 1828 WIND OBSER. NO. 1997 270 270 180 225 270 270 45 45 270 270 270 270 270 PREVAIL. DIRECT. 7.5 9.0 14.0 14.4 9.4 9.5 9.7 10.1 9.5 8.6 6.0 7.8 8.4 PREVAIL. SPEED 22.6 22.1 16.1 20.7 22.6 28.7 38.1 29.0 22.7 23.9 14.0 16.1 20.0 PREVAIL. PERCENT 24.5 18.6 29.7 26.0 20.6 16.7 15.5 19.4 21.3 29.7 46.0 49.7 26.5 CALMS PERCENT 155 140 155 150 155 150 155 155 150 155 150 155 1825 WIND OBSER. NO. 1998 90 270 225 270 270 45 45 45 45 270 270 45 270 PREVAIL. DIRECT. 6.4 7.6 14.7 9.3 9.2 9.7 9.0 9.4 8.8 8.1 9.4 7.5 8.7 PREVAIL. SPEED 13.5 12.9 15.5 20.7 16.1 23.3 18.7 20.6 16.7 21.9 18.7 15.5 15.8 PREVAIL. PERCENT 40.6 37.9 32.9 26.0 21.3 18.0 27.7 23.2 37.3 33.5 36.0 49.7 32.0 CALMS PERCENT 155 140 155 150 155 150 155 155 150 155 150 155 1825 WIND OBSER. NO. 1999 90 225 270 270 270 270 45 360 90 45 45 45 270 PREVAIL. DIRECT. 6.4 13.9 7.9 9.4 11.1 11.2 8.8 9.0 8.7 7.7 8.4 7.4 8.9 PREVAIL. SPEED 11.0 20.0 15.5 16.7 18.7 24.0 24.5 21.9 16.7 23.9 18.0 15.5 16.4 PREVAIL. PERCENT 56.8 25.0 32.3 26.0 23.9 24.7 22.6 23.2 30.7 32.9 40.0 47.7 32.2 CALMS PERCENT 155 140 155 150 155 150 155 155 150 155 150 155 1825 WIND OBSER. NO. 2000 270 270 270 270 270 90 45 45 90 90 90 90 270 PREVAIL. DIRECT. 6.3 8.7 10.1 11.9 12.2 8.2 9.1 8.7 8.1 7.4 5.6 7.3 9.1 PREVAIL. SPEED 12.9 17.9 18.7 26.7 19.4 16.5 21.8 25.0 18.0 16.8 10.0 9.0 13.4 PREVAIL. PERCENT 40.0 36.6 23.9 22.0 25.2 29.7 35.1 26.7 30.7 48.4 65.3 63.2 36.8 CALMS PERCENT 155 145 155 150 155 212 248 180 150 155 150 155 2010 WIND OBSER. NO. 2001 90 90 270 270 270 360 45 45 45 270 90 90 90 PREVAIL. DIRECT. 5.7 8.3 9.8 10.6 13.4 10.6 10.9 9.0 9.4 12.5 8.8 8.6 9.2 PREVAIL. SPEED 12.3 10.7 13.5 20.7 23.2 18.7 27.1 19.4 19.3 18.7 15.3 12.3 12.4 PREVAIL. PERCENT 72.3 47.9 47.1 30.0 25.8 26.0 13.5 29.0 32.7 23.9 38.0 47.7 36.1 CALMS PERCENT 155 140 155 150 155 150 155 155 150 155 150 155 1825 WIND OBSER. NO. 2002 225 270 225 270 225 270 90 90 90 270 90 225 270 PREVAIL. DIRECT. 12.5 11.7 14.6 13.6 14.4 12.1 10.9 11.0 9.1 7.6 7.0 15.6 11.0 PREVAIL. SPEED 11.6 15.7 21.3 17.3 12.9 10.7 12.9 22.6 18.0 12.3 8.0 11.0 11.1 PREVAIL. PERCENT 52.9 45.0 31.6 40.7 56.1 42.7 61.3 41.9 48.0 58.1 60.7 71.0 50.9 CALMS PERCENT 155 140 155 150 155 150 155 155 150 155 150 155 1825 WIND OBSER. NO. 2003 270 225 270 225 90 270 90 90 90 270 90 270 270 PREVAIL. DIRECT. 10.0 16.3 14.1 16.2 11.0 11.7 9.2 10.9 8.8 9.4 8.8 7.2 10.3 PREVAIL. SPEED 12.9 18.6 17.4 11.3 11.0 12.0 15.5 14.2 16.7 14.2 8.7 7.7 9.8 PREVAIL. PERCENT 68.4 47.9 53.5 54.7 55.5 51.3 47.1 58.1 44.7 47.7 57.3 66.5 54.5 CALMS PERCENT 155 140 155 150 155 150 155 155 150 155 150 155 1825 WIND OBSER. NO. 2004 270 225 270 225 270 45 90 90 45 45 270 90 90 PREVAIL. DIRECT. 8.3 14.2 9.5 16.5 11.6 10.5 9.5 9.2 9.0 7.5 8.6 6.8 8.7 PREVAIL. SPEED 9.0 17.9 8.4 10.7 13.5 19.3 19.4 24.5 22.0 14.8 18.0 12.9 11.6 PREVAIL. PERCENT 58.1 47.6 58.7 67.3 47.7 40.0 42.6 31.0 34.7 32.9 30.7 40.0 44.3 CALMS PERCENT 155 145 155 150 155 150 155 155 150 155 150 155 1830 WIND OBSER. NO. 2005 270 90 270 270 270 45 45 90 90 270 90 90 90 PREVAIL. DIRECT. 7.8 7.7 9.2 9.8 9.6 8.9 9.2 8.4 8.5 8.0 6.7 8.0 8.1 PREVAIL. SPEED 16.8 15.0 18.7 14.7 16.1 25.3 21.3 26.5 22.0 20.6 19.3 18.7 15.7 PREVAIL. PERCENT 45.2 38.6 22.6 25.3 21.3 14.7 14.8 16.1 18.7 25.8 38.7 19.4 25.0 CALMS PERCENT 155 140 155 150 155 150 155 155 150 155 150 155 1825 WIND OBSER. NO. 1992-2005 270 270 270 270 270 270 45 45 45 270 270 270 270 PREVAIL. DIRECT. 8.0 8.8 9.9 10.2 10.3 9.3 9.3 8.8 8.3 8.3 7.9 7.3 8.8 PREVAIL. SPEED 14.4 16.3 15.3 17.1 19.0 18.2 21.3 21.2 16.9 18.2 13.1 12.3 15.7 PREVAIL. PERCENT MEAN 48.4 36.1 37.1 31.3 30.0 25.7 26.4 26.3 30.0 35.3 42.2 48.2 34.7 CALMS PERCENT MEAN 155.0 141.2 155.0 149.9 161.5 160.9 168.3 163.4 156.4 156.5 150.0 155.0 1873.1 WIND OBSER. NO. =============================================================================================== TEHRAN 2006,MAY M.(S & A) STATION NAEIN (40801) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) FORM 35 LATITUDE 32 51 N LONGITUDE 53 5 E DATA PROCESSING CENTER ELEVATION 1549.0 M VECTOR WIND DIRECTION , MAGNITUDE (IN KNOTS) AND WIND STEADINESES (%) YEAR JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL 1992 *** *** 218 227 258 309 48 42 339 3 206 183 *** VECTOR DIRECT. **** **** 1.1 3.4 1.3 0.9 2.7 3.5 1.6 1.6 2.4 1.9 **** WIND MAGNITUDE ***** ***** 27.5 41.5 22.4 17.3 42.9 57.4 26.7 34.0 38.7 36.5 ***** STEADINESES(%) 1993 231 217 218 231 259 312 354 3 332 339 206 18 264 VECTOR DIRECT. 1.8 2.0 3.0 3.7 2.7 2.0 3.0 2.2 1.1 0.7 2.7 0.8 1.1 WIND MAGNITUDE 34.0 33.9 36.1 52.9 38.0 33.9 50.8 41.5 21.2 16.7 46.6 20.5 19.0 STEADINESES(%) 1994 235 243 233 275 256 326 35 36 15 334 205 210 288 VECTOR DIRECT. 1.7 2.3 2.0 1.5 1.8 2.1 4.5 4.0 2.8 1.5 4.6 2.8 0.7 WIND MAGNITUDE 35.4 36.5 34.5 25.0 26.1 30.9 56.3 53.3 52.8 32.6 59.7 46.7 11.1 STEADINESES(%) 1995 211 204 252 211 278 338 354 22 45 311 216 292 307 VECTOR DIRECT. 0.8 2.0 1.5 2.2 1.9 1.8 4.4 3.2 1.3 0.9 1.4 0.5 0.7 WIND MAGNITUDE 17.4 28.6 23.4 31.4 24.7 21.2 48.4 43.8 16.7 16.1 29.8 20.0 10.8 STEADINESES(%) 1996 237 230 196 244 318 354 5 5 354 341 19 182 319 VECTOR DIRECT. 1.7 2.0 2.3 2.2 0.8 1.6 4.4 2.9 1.0 0.9 1.3 0.7 0.7 WIND MAGNITUDE 37.8 29.0 37.1 30.1 16.7 21.6 61.1 50.9 17.5 15.0 30.2 14.6 11.9 STEADINESES(%) 1997 220 227 206 222 269 306 29 12 327 291 33 222 279 VECTOR DIRECT. 1.5 3.0 3.5 3.6 2.2 2.9 4.3 4.0 1.9 1.8 0.2 1.0 1.0 WIND MAGNITUDE 22.1 34.1 47.3 42.9 28.9 38.2 58.1 55.6 26.8 29.0 4.9 24.4 14.5 STEADINESES(%) 1998 205 242 222 241 271 33 4 7 31 360 239 136 313 VECTOR DIRECT. 0.9 1.5 3.4 3.4 1.8 3.5 2.9 3.7 1.4 1.5 1.0 0.6 0.7 WIND MAGNITUDE 16.4 24.2 48.6 42.5 23.7 49.3 43.3 53.6 24.6 27.3 16.1 14.0 10.9 STEADINESES(%) 1999 197 227 225 275 315 293 18 8 30 331 5 32 332 VECTOR DIRECT. 0.2 3.6 1.2 1.5 1.1 1.6 3.8 3.7 1.6 1.7 0.4 1.0 0.9 WIND MAGNITUDE 5.6 46.8 18.2 19.7 14.5 20.3 56.7 57.8 27.1 30.4 7.7 26.3 14.5 STEADINESES(%) 2000 201 236 245 269 292 20 31 42 26 28 351 210 316 VECTOR DIRECT. 2.4 1.4 2.8 4.0 2.1 2.6 3.2 3.3 1.5 1.2 0.5 1.6 0.7 WIND MAGNITUDE 43.6 25.0 34.6 50.0 28.0 44.8 55.2 54.1 26.3 30.8 21.7 43.2 12.3 STEADINESES(%) 2001 353 252 257 253 267 7 31 20 18 260 228 187 316 VECTOR DIRECT. 0.6 1.7 1.0 2.6 3.9 3.2 5.5 2.6 1.8 2.0 1.0 2.3 0.9 WIND MAGNITUDE 28.6 28.3 19.2 34.2 42.4 43.2 60.4 38.2 27.7 24.1 15.2 40.4 13.4 STEADINESES(%) 2002 214 248 241 233 249 286 36 70 55 274 280 220 243 VECTOR DIRECT. 2.3 3.4 4.4 4.9 2.7 1.7 2.1 2.8 0.9 0.7 0.4 2.2 1.3 WIND MAGNITUDE 45.1 50.0 50.6 63.6 50.9 27.0 52.5 47.5 20.9 23.3 14.3 61.1 24.5 STEADINESES(%) 2003 244 227 255 220 11 340 56 44 33 254 270 226 270 VECTOR DIRECT. 2.2 4.2 3.1 2.4 1.5 1.3 2.1 2.4 2.1 1.8 0.4 0.7 0.6 WIND MAGNITUDE 66.7 61.8 50.8 42.9 32.6 24.1 43.7 61.5 43.7 36.0 10.5 21.9 12.5 STEADINESES(%) 2004 204 213 235 232 234 11 37 68 37 344 231 213 248 VECTOR DIRECT. 1.2 3.9 1.0 2.1 2.4 2.3 2.5 2.4 3.2 1.0 2.7 0.8 0.3 WIND MAGNITUDE 27.9 62.9 24.4 50.0 38.1 39.7 46.3 37.5 55.2 17.5 40.3 17.0 5.5 STEADINESES(%) 2005 255 159 240 292 310 24 21 52 38 274 3 220 354 VECTOR DIRECT. 1.7 0.1 3.5 0.8 1.7 2.5 3.9 3.7 2.5 0.9 0.6 0.5 0.8 WIND MAGNITUDE 35.4 1.9 45.5 11.3 22.4 31.6 48.7 52.1 37.3 15.5 14.0 7.1 12.1 STEADINESES(%) 1992-2005 226 229 231 240 273 347 22 30 19 317 223 205 293 VECTOR DIRECT. 1.3 2.3 2.3 2.6 1.7 1.8 3.4 3.0 1.6 1.0 1.0 0.9 0.7 WIND MAGNITUDE 28.3 34.8 35.4 36.6 25.0 26.5 50.7 47.6 27.1 18.9 19.6 20.0 11.7 STEADINESES(%) =============================================================================================== TEHRAN 2006,MAY M.(S & A) STATION NAEIN (40801) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) FORM 36 LATITUDE 32 51 N LONGITUDE 53 5 E DATA PROCESSING CENTER ELEVATION 1549.0 M AVERAGE OF WIND SPEED IN KNOTS YEAR JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL 1992 ***** ***** 4.0 8.2 5.8 5.2 6.3 6.1 6.0 4.7 6.2 5.2 ****** 1993 5.3 5.9 8.3 7.0 7.1 5.9 5.9 5.3 5.2 4.2 5.8 3.9 5.8 1994 4.8 6.3 5.8 6.0 6.9 6.8 8.0 7.5 5.3 4.6 7.7 6.0 6.3 1995 4.6 7.0 6.4 7.0 7.7 8.5 9.1 7.3 7.8 5.6 4.7 2.5 6.5 1996 4.5 6.9 6.2 7.3 4.8 7.4 7.2 5.7 5.7 6.0 4.3 4.8 5.9 1997 6.8 8.8 7.4 8.4 7.6 7.6 7.4 7.2 7.1 6.2 4.1 4.1 6.9 1998 5.5 6.2 7.0 8.0 7.6 7.1 6.7 6.9 5.7 5.5 6.2 4.3 6.4 1999 3.6 7.7 6.6 7.6 7.6 7.9 6.7 6.4 5.9 5.6 5.2 3.8 6.2 2000 5.5 5.6 8.1 8.0 7.5 5.8 5.8 6.1 5.7 3.9 2.3 3.7 5.7 2001 2.1 6.0 5.2 7.6 9.2 7.4 9.1 6.8 6.5 8.3 6.6 5.7 6.7 2002 5.1 6.8 8.7 7.7 5.3 6.3 4.0 5.9 4.3 3.0 2.8 3.6 5.3 2003 3.3 6.8 6.1 5.6 4.6 5.4 4.8 3.9 4.8 5.0 3.8 3.2 4.8 2004 4.3 6.2 4.1 4.2 6.3 5.8 5.4 6.4 5.8 5.7 6.7 4.7 5.5 2005 4.8 5.2 7.7 7.1 7.6 7.9 8.0 7.1 6.7 5.8 4.3 7.0 6.6 MEAN 4.6 6.6 6.5 7.1 6.8 6.8 6.7 6.3 5.9 5.3 5.1 4.5 6.0 =============================================================================================== TEHRAN 2006,MAY M.(S & A) STATION NAEIN (40801) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) FORM 37 LATITUDE 32 51 N LONGITUDE 53 5 E DATA PROCESSING CENTER ELEVATION 1549.0 M FASTEST WIND DIRECTION AND SPEED IN KNOTS YEAR JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL 1992 *** *** 270 270 280 220 290 10 210 360 180 210 *** DIRECTION ** ** 27 29 39 19 19 21 23 16 29 23 ** SPEED ** ** 7 22 4 8 12 11 25 15 25 27 DAY 1993 180 210 200 180 240 240 60 280 270 210 180 180 200 DIRECTION 25 23 29 29 23 23 19 21 17 17 29 23 29 SPEED 8 12 8 27 2 1 4 23 14 1 12 24 DAY 1994 210 210 210 210 260 220 10 30 280 280 230 180 230 DIRECTION 23 31 25 27 27 19 19 19 16 17 39 39 39 SPEED 5 1 7 2 6 3 9 4 5 31 30 2 DAY 1995 170 190 240 210 220 190 200 30 210 210 190 160 190 DIRECTION 23 35 31 19 23 19 19 17 23 23 23 16 35 SPEED 17 5 26 3 8 15 2 8 20 12 24 31 DAY 1996 200 210 180 260 240 240 210 30 210 210 200 190 210 DIRECTION 17 29 29 27 19 23 19 19 19 21 19 23 29 SPEED 5 2 2 10 1 6 8 26 22 27 8 29 DAY 1997 190 240 210 200 260 300 260 30 230 250 210 190 210 DIRECTION 29 29 33 31 29 23 19 19 19 23 23 23 33 SPEED 16 22 25 10 19 12 6 2 2 2 5 1 DAY 1998 270 240 180 260 220 270 200 320 180 220 130 190 240 DIRECTION 23 29 29 29 29 19 27 27 23 19 23 29 29 SPEED 13 8 18 24 29 4 17 2 5 7 14 24 DAY 1999 170 230 200 180 230 240 80 360 20 220 190 180 230 DIRECTION 27 35 29 29 33 27 19 19 19 23 23 19 35 SPEED 9 19 26 8 14 5 13 3 2 31 27 14 DAY 2000 250 230 200 250 260 30 60 80 280 320 210 210 210 DIRECTION 27 23 31 31 29 19 23 19 19 19 35 27 35 SPEED 22 7 25 15 1 3 6 5 2 15 27 25 DAY 2001 330 230 260 250 190 280 280 330 70 280 190 200 250 DIRECTION 19 29 27 33 31 19 23 29 23 23 31 27 33 SPEED 27 4 17 12 11 1 13 11 18 21 18 21 DAY 2002 210 270 240 170 250 250 70 60 180 330 230 220 220 DIRECTION 23 25 29 29 25 29 23 23 23 27 27 33 33 SPEED 7 27 20 3 16 6 21 11 11 22 13 21 DAY 2003 210 220 290 230 270 350 190 90 210 260 210 240 290 DIRECTION 27 27 31 31 31 27 19 19 17 19 21 23 31 SPEED 28 14 8 1 8 25 2 28 18 27 10 20 DAY 2004 190 200 190 240 210 330 300 210 70 220 190 200 240 DIRECTION 19 27 25 31 29 17 19 16 14 21 19 23 31 SPEED 3 11 14 17 17 18 12 9 12 22 23 16 DAY 2005 230 190 220 220 220 80 280 90 210 220 210 220 220 DIRECTION 29 23 27 33 23 17 19 16 14 23 16 29 33 SPEED 23 1 24 3 4 19 7 4 29 20 17 24 DAY 1992-2005 190 190 210 250 280 250 200 330 210 330 230 180 280 DIRECTION 29 35 33 33 39 29 27 29 23 27 39 39 39 SPEED 97-16 95- 5 97-25 1-12 92- 4 2- 6 98-17 1-11 92-25 2-22 94-30 94- 2 92 YEAR-DAY =============================================================================================== TEHRAN 2006,MAY M.(S & A) STATION NAEIN (40801) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) FORM 38 LATITUDE 32 51 N LONGITUDE 53 5 E DATA PROCESSING CENTER ELEVATION 1549.0 M NO. OF CLEAR DAYS (0-2)/8 YEAR JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL 1992 *** *** 18 8 6 25 23 28 28 30 16 12 *** 1993 14 12 10 8 6 25 26 27 29 20 16 17 210 1994 12 17 17 11 15 27 27 30 25 7 12 23 223 1995 23 13 17 4 11 24 29 30 26 28 23 14 242 1996 15 8 10 12 13 24 24 25 30 29 20 17 227 1997 17 24 11 14 12 20 25 31 30 19 10 17 230 1998 20 13 13 16 20 26 24 24 27 28 22 14 247 1999 9 15 15 13 27 30 27 28 30 28 16 18 256 2000 16 20 19 15 28 30 26 31 25 25 16 15 266 2001 19 21 20 21 23 27 28 28 27 27 21 14 276 2002 21 22 21 13 27 27 30 31 30 28 14 15 279 2003 15 17 15 8 16 26 29 31 30 23 21 16 247 2004 13 20 11 10 22 22 16 28 28 27 15 16 228 2005 20 10 12 15 15 30 26 28 27 30 16 16 245 MEAN 16.5 16.3 14.9 12.0 17.2 25.9 25.7 28.6 28.0 24.9 17.0 16.0 243.0 =============================================================================================== TEHRAN 2006,MAY M.(S & A) STATION NAEIN (40801) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) FORM 39 LATITUDE 32 51 N LONGITUDE 53 5 E DATA PROCESSING CENTER ELEVATION 1549.0 M NO. OF PARTLY CLOUDY DAYS (3-6)/8 YEAR JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL 1992 *** *** 12 18 20 2 8 3 2 1 13 13 *** 1993 9 10 13 16 23 5 5 4 1 11 11 12 120 1994 14 9 11 14 15 3 4 1 5 21 14 5 116 1995 5 9 10 16 16 6 2 1 4 2 7 8 86 1996 6 13 12 13 17 6 7 6 0 2 4 12 98 1997 9 3 15 13 16 9 6 0 0 10 12 9 102 1998 8 10 8 13 10 4 7 7 3 3 8 14 95 1999 14 11 7 15 4 0 4 3 0 3 12 10 83 2000 9 7 9 15 1 0 5 0 5 5 7 14 77 2001 8 5 9 7 6 3 3 3 3 4 8 9 68 2002 8 4 6 12 4 3 1 0 0 3 12 9 62 2003 7 9 10 11 15 3 2 0 0 8 7 7 79 2004 14 9 14 14 8 8 15 3 2 4 13 8 112 2005 8 14 14 7 16 0 5 3 3 1 11 10 92 MEAN 9.2 8.7 10.7 13.1 12.2 3.7 5.3 2.4 2.0 5.6 9.9 10.0 92.8 =============================================================================================== TEHRAN 2006,MAY M.(S & A) STATION NAEIN (40801) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) FORM 40 LATITUDE 32 51 N LONGITUDE 53 5 E DATA PROCESSING CENTER ELEVATION 1549.0 M NO. OF CLOUDY DAYS (7-8)/8 YEAR JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL 1992 *** *** 1 4 5 3 0 0 0 0 1 6 *** 1993 8 6 8 6 2 0 0 0 0 0 3 2 35 1994 5 2 3 5 1 0 0 0 0 3 4 3 26 1995 3 6 4 10 4 0 0 0 0 1 0 9 37 1996 10 8 9 5 1 0 0 0 0 0 6 2 41 1997 5 1 5 3 3 1 0 0 0 2 8 5 33 1998 3 5 10 1 1 0 0 0 0 0 0 3 23 1999 8 2 9 2 0 0 0 0 0 0 2 3 26 2000 6 2 3 0 2 0 0 0 0 1 7 2 23 2001 4 2 2 2 2 0 0 0 0 0 1 8 21 2002 2 2 4 5 0 0 0 0 0 0 4 7 24 2003 9 2 6 11 0 1 0 0 0 0 2 8 39 2004 4 0 6 6 1 0 0 0 0 0 2 7 26 2005 3 4 5 8 0 0 0 0 0 0 3 5 28 MEAN 5.4 3.2 5.4 4.9 1.6 0.4 0.0 0.0 0.0 0.5 3.1 5.0 29.5 =============================================================================================== TEHRAN 2006,MAY M.(S & A) STATION NAEIN (40801) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) FORM 41 LATITUDE 32 51 N LONGITUDE 53 5 E DATA PROCESSING CENTER ELEVATION 1549.0 M NO. OF DAYS WITH VISIBILITY LESS THAN OR EQUAL 2 KM YEAR JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL 1992 *** *** 0 0 1 0 0 0 0 0 2 1 *** 1993 5 1 0 0 1 2 0 0 0 0 0 0 9 1994 0 2 0 0 0 0 0 0 0 1 0 0 3 1995 0 0 0 0 0 0 0 0 0 0 0 0 0 1996 3 4 2 1 0 0 0 0 0 0 0 0 10 1997 0 0 1 0 0 0 0 0 0 0 0 1 2 1998 1 2 1 0 0 0 0 0 0 0 0 0 4 1999 1 0 0 0 0 0 0 0 0 0 0 0 1 2000 0 0 1 0 0 0 0 0 0 0 0 2 3 2001 1 0 0 1 0 0 0 0 0 0 0 2 4 2002 0 1 0 1 0 0 0 0 0 0 0 1 3 2003 2 0 0 0 0 0 0 0 0 0 0 6 8 2004 2 0 2 0 0 0 0 0 0 0 0 2 6 2005 0 0 2 2 0 0 0 0 0 0 0 0 4 MEAN 1.2 0.8 0.6 0.4 0.1 0.1 0.0 0.0 0.0 0.1 0.1 1.1 4.5 =============================================================================================== TEHRAN 2006,MAY M.(S & A) STATION NAEIN (40801) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) FORM 42 LATITUDE 32 51 N LONGITUDE 53 5 E DATA PROCESSING CENTER ELEVATION 1549.0 M MONTHLY TOTAL OF SUNSHINE HOURS YEAR JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL 1992 ***** ***** ***** ***** ***** ***** ***** 352.1 321.6 298.6 215.8 175.7 ****** 1993 185.0 184.2 100.0 ***** ***** ***** ***** ***** ***** 281.3 217.3 235.7 ****** 1994 201.4 228.9 256.4 229.9 295.2 352.3 358.8 360.0 312.4 229.9 187.0 245.4 3257.6 1995 110.3 ***** 248.3 204.6 249.6 319.5 359.1 360.9 ***** 305.8 269.1 177.7 ****** 1996 181.8 173.3 187.2 257.6 286.8 361.4 367.4 343.0 302.7 305.5 231.3 240.3 3238.3 1997 217.0 273.3 227.4 269.3 295.4 299.4 337.3 372.2 327.2 257.0 180.0 205.0 3260.5 1998 248.8 189.6 230.7 292.0 318.2 358.9 345.5 337.0 306.2 307.0 255.4 210.9 3400.2 1999 162.2 221.9 207.9 266.3 353.6 369.8 362.0 352.5 328.5 293.6 236.4 228.3 3383.0 2000 208.7 251.6 263.5 288.5 343.8 367.7 369.3 355.5 292.8 280.0 188.6 208.1 3418.1 2001 226.2 238.6 260.1 284.5 312.4 359.0 349.9 345.6 303.4 289.7 231.2 173.7 3374.3 2002 225.4 232.9 253.3 221.0 291.9 360.3 341.4 343.0 310.0 276.5 208.0 200.5 3264.2 2003 194.2 225.7 237.1 201.8 301.4 333.0 333.1 357.9 324.6 269.2 247.5 186.1 3211.6 2004 196.8 237.6 209.0 225.3 304.3 326.8 313.4 347.1 314.9 291.4 221.8 190.6 3179.0 2005 230.5 197.0 239.0 255.4 286.0 372.4 340.0 347.4 312.1 304.4 211.0 229.3 3324.5 MEAN 199.1 221.2 224.6 249.7 303.2 348.4 348.1 351.9 313.0 285.0 221.5 207.7 3273.4 =============================================================================================== TEHRAN 2006,MAY M.(S & A) STATION NAEIN (40801) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) FORM 43 LATITUDE 32 51 N LONGITUDE 53 5 E DATA PROCESSING CENTER ELEVATION 1549.0 M AVERAGE OF QFE PRESSURE IN HPA YEAR JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL 1992 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 845.8 843.2 ****** 1993 843.2 842.3 841.7 841.3 841.9 839.4 838.9 840.8 842.4 847.6 844.8 846.0 842.5 1994 843.5 840.4 841.3 842.8 841.7 837.0 835.7 837.7 845.1 847.1 844.4 844.6 841.8 1995 844.8 842.2 842.0 841.2 843.1 838.8 835.2 839.2 841.7 845.4 844.9 845.5 842.0 1996 844.4 841.3 839.7 842.4 842.4 839.3 840.3 840.5 840.9 845.3 847.7 846.4 842.5 1997 842.3 842.2 838.9 840.6 842.7 839.6 835.7 839.4 843.0 845.5 845.8 843.7 841.6 1998 841.1 841.8 841.1 841.9 842.4 841.5 837.9 841.0 842.1 845.8 846.8 847.3 842.6 1999 844.1 842.1 840.8 842.0 841.3 838.7 837.3 840.4 841.0 845.1 844.8 847.7 842.1 2000 842.0 842.3 841.2 842.1 839.8 838.3 839.5 840.2 841.0 845.3 846.5 844.3 841.9 2001 844.5 842.4 841.9 841.6 839.9 837.7 837.5 840.9 842.6 845.0 844.9 845.8 842.1 2002 843.7 843.5 842.3 840.2 840.5 839.0 839.1 838.4 843.3 845.6 846.4 843.2 842.1 2003 843.5 839.8 840.9 842.2 842.7 838.1 835.6 840.4 842.2 845.3 846.1 846.1 841.9 2004 841.3 842.9 844.1 841.4 840.2 839.1 839.5 838.9 844.1 847.4 845.0 844.0 842.3 2005 842.6 841.1 840.7 843.8 841.6 838.9 838.1 839.3 841.4 846.4 846.2 846.2 842.2 MEAN 843.2 841.9 841.3 841.8 841.6 838.9 837.7 839.8 842.4 845.9 845.7 845.3 842.1 =============================================================================================== TEHRAN 2006,MAY M.(S & A) STATION NAEIN (40801) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) FORM 44 LATITUDE 32 51 N LONGITUDE 53 5 E DATA PROCESSING CENTER ELEVATION 1549.0 M MAX. OF QFE PRESSURE IN HPA YEAR JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL 1992 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 853.7 849.0 ****** DAY-HOUR **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** 4- 6 1- 6 1993 851.8 849.0 849.7 848.5 847.1 847.5 844.6 845.6 848.5 853.5 851.1 853.0 853.5 DAY-HOUR 6- 6 9- 6 31- 6 1- 6 9- 6 23- 6 27- 6 31- 6 23- 6 17- 6 21- 6 26- 6 1994 852.6 847.7 847.6 851.7 846.6 843.0 840.2 842.4 853.3 853.1 851.7 851.0 853.3 DAY-HOUR 10- 6 20- 6 18- 6 5- 6 15- 3 9- 6 13- 6 16- 6 23- 6 10- 6 2- 6 22- 6 1995 853.0 848.0 850.5 846.0 848.3 845.4 840.0 843.9 848.2 853.7 851.8 849.8 853.7 DAY-HOUR 7- 6 14- 6 3- 6 4- 6 26- 6 1- 6 4- 6 25- 6 13- 6 27- 6 16- 6 10- 6 1996 851.4 847.5 845.6 847.3 846.3 843.5 845.9 847.1 849.2 853.1 856.9 852.4 856.9 DAY-HOUR 26- 6 24- 6 29- 6 8- 6 17- 6 3- 6 4- 6 30- 6 25- 6 2- 6 18- 6 8- 6 1997 849.6 849.7 851.7 846.6 849.3 848.9 839.7 843.4 848.7 850.9 855.0 851.3 855.0 DAY-HOUR 19- 6 17- 6 11- 6 13- 6 12- 6 18- 6 9- 6 25- 6 19- 6 9- 6 8- 6 28- 6 1998 849.4 853.9 848.8 851.9 849.9 847.2 845.5 845.7 847.2 851.9 853.2 853.8 853.9 DAY-HOUR 4- 6 23- 6 28- 6 12- 6 8- 6 6- 6 20- 6 25- 6 13- 6 10- 6 21- 6 9- 6 1999 854.5 849.5 848.7 846.8 848.5 844.9 842.7 847.5 847.6 848.8 851.2 854.6 854.6 DAY-HOUR 2- 6 12- 6 31- 6 11- 6 28- 6 1- 6 19- 6 20- 6 30- 6 27- 6 14- 6 6- 6 2000 850.6 850.2 846.9 847.7 845.0 844.2 846.1 845.0 847.8 850.6 855.8 851.6 855.8 DAY-HOUR 31- 6 11- 6 21- 6 2- 6 4- 6 3- 6 30- 6 23- 6 29- 6 16- 6 17- 6 4- 6 2001 848.8 851.0 850.6 849.9 844.6 845.5 844.0 845.9 849.7 852.9 852.3 851.2 852.9 DAY-HOUR 10- 6 9- 6 1- 6 2- 6 11- 9 2- 6 29- 6 14- 6 22- 6 10- 6 2- 6 28- 6 2002 851.3 852.7 854.5 848.7 845.5 845.3 844.7 843.6 848.6 851.2 854.8 852.8 854.8 DAY-HOUR 26- 6 6- 6 11- 6 1- 6 17- 6 25- 6 29- 6 31- 6 22- 6 10- 6 18- 6 3- 6 2003 850.9 847.7 850.2 849.2 849.6 843.8 842.4 844.3 849.4 850.6 855.5 854.6 855.5 DAY-HOUR 12- 6 6- 6 2- 6 8- 6 2- 6 2- 3 3- 6 4- 6 27- 6 15- 6 25- 6 12- 6 2004 847.9 849.5 851.2 847.3 845.3 846.1 845.6 844.4 849.8 852.4 849.9 854.1 854.1 DAY-HOUR 12- 6 10- 6 9- 6 12- 6 18- 6 6- 6 18- 6 18- 6 27- 6 27- 6 1- 6 4- 6 2005 850.0 849.1 846.4 850.7 846.0 844.8 843.1 844.1 845.2 853.3 850.8 852.6 853.3 DAY-HOUR 9- 6 15- 6 29- 6 6- 6 12- 6 16- 6 28- 6 17- 6 22- 6 12- 6 23- 6 29- 6 1992-2005 854.5 853.9 854.5 851.9 849.9 848.9 846.1 847.5 853.3 853.7 856.9 854.6 856.9 YEAR-DAY 99- 2 98-23 2-11 98-12 98- 8 97-18 0-30 99-20 94-23 95-27 96-18 99- 6 96-18 =============================================================================================== TEHRAN 2006,MAY M.(S & A) STATION NAEIN (40801) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) FORM 45 LATITUDE 32 51 N LONGITUDE 53 5 E DATA PROCESSING CENTER ELEVATION 1549.0 M MIN. OF QFE PRESSURE IN HPA YEAR JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL 1992 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 835.7 837.8 ****** DAY-HOUR **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** 26- 3 19-12 1993 832.3 834.4 834.0 834.6 836.2 834.1 833.1 833.5 837.5 841.2 835.9 838.3 832.3 DAY-HOUR 8-12 3-12 12-12 13-12 7-12 3-15 12-15 12-15 3-15 3-12 14- 3 4-12 1994 831.8 832.0 832.6 834.4 834.1 831.2 830.8 832.5 837.8 840.9 834.3 831.6 830.8 DAY-HOUR 16-12 12-12 12- 3 2-12 1-12 28-15 7-15 2-15 2-15 2-12 26- 3 4-12 1995 839.0 832.8 834.0 834.9 837.6 831.4 830.1 835.0 837.5 839.5 836.8 839.1 830.1 DAY-HOUR 11-12 23-12 26-12 24-15 10-15 22-15 16-15 22-15 19-12 12-12 25-15 4-12 1996 837.8 831.0 833.7 835.2 836.0 833.2 832.9 834.2 834.2 837.7 841.6 840.5 831.0 DAY-HOUR 6-15 5- 3 13-12 3-12 29-15 19-12 7-15 8-12 20-12 27-12 28-12 16-12 1997 832.2 835.8 829.0 832.9 835.3 833.5 830.5 833.4 837.2 840.7 840.8 834.4 829.0 DAY-HOUR 17-12 27-12 25-12 10-12 4-15 30-15 16-15 5-15 2-15 23-12 19-12 10-12 1998 828.1 830.8 832.2 833.7 833.7 835.9 829.6 835.1 836.1 838.8 841.5 839.9 828.1 DAY-HOUR 13- 9 15-12 15-12 21-15 30-12 29-15 8-15 22-15 4-15 1-12 1-12 21-12 1999 835.8 832.6 833.2 833.5 831.6 830.2 832.4 835.7 835.8 840.0 838.1 839.7 830.2 DAY-HOUR 18-12 6- 3 2-12 8-12 20-15 24-15 14-15 14-15 15-15 31-12 26-12 15-12 2000 834.2 830.8 834.4 838.0 834.7 831.1 832.8 833.1 832.0 839.0 840.3 834.4 830.8 DAY-HOUR 21-12 7-12 13-15 21-15 26-15 24-15 11-15 31-15 1-15 1-12 21-12 15-12 2001 839.0 829.8 830.8 834.5 833.4 831.5 830.8 834.3 836.7 839.9 833.8 838.0 829.8 DAY-HOUR 19-12 21-12 25-15 9-15 25-15 6-15 10-15 27-12 5-12 1-12 18-12 5-12 2002 836.6 834.8 834.8 829.7 835.3 830.8 832.7 832.4 838.3 841.0 839.7 830.9 829.7 DAY-HOUR 8-12 25-12 22-12 3-12 4-12 20-15 24-15 17-15 18-12 21-12 12-12 21-12 2003 829.7 828.6 830.8 836.6 836.4 829.5 830.2 836.0 836.8 840.4 838.0 837.3 828.6 DAY-HOUR 28-15 19-12 26-15 17-12 29-12 30-15 25-15 1- 3 7-15 27-15 14-12 6-12 2004 833.6 834.6 835.0 830.0 829.1 832.3 831.5 832.5 838.6 841.0 835.1 836.2 829.1 DAY-HOUR 27- 3 15-12 31-12 17- 9 13-12 17-15 10-15 4-15 11-15 3-12 23-12 16-12 2005 828.4 834.9 828.8 836.6 831.8 831.2 830.4 832.9 836.0 838.7 839.6 835.9 828.4 DAY-HOUR 23- 3 5- 3 24-12 27-12 5-15 20-15 6-15 8-15 5-12 4-15 8-12 24- 3 1992-2005 828.1 828.6 828.8 829.7 829.1 829.5 829.6 832.4 832.0 837.7 833.8 830.9 828.1 YEAR-DAY 98-13 3-19 5-24 2- 3 4-13 3-30 98- 8 2-17 0- 1 96-27 1-18 2-21 98-13 =============================================================================================== TEHRAN 2006,MAY M.(S & A) STATION NAEIN (40801) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) FORM 46 LATITUDE 32 51 N LONGITUDE 53 5 E DATA PROCESSING CENTER ELEVATION 1549.0 M AVERAGE OF QNH PRESSURE IN HPA YEAR JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL 1992 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1019.2 1016.1 ****** 1993 1016.1 1015.1 1014.4 1013.9 1014.7 1011.7 1011.1 1013.4 1015.2 1021.2 1018.0 1019.4 1015.4 1994 1016.4 1012.9 1013.9 1015.6 1014.4 1008.9 1007.3 1009.7 1018.4 1020.6 1017.5 1017.8 1014.5 1995 1018.0 1015.0 1014.7 1013.8 1016.0 1011.0 1006.8 1011.5 1014.4 1018.7 1018.1 1018.8 1014.7 1996 1017.5 1013.9 1012.1 1015.2 1015.2 1011.6 1012.7 1013.0 1013.5 1018.5 1021.4 1019.8 1015.4 1997 1015.1 1015.0 1011.1 1013.1 1015.6 1012.0 1007.4 1011.7 1015.9 1018.8 1019.2 1016.7 1014.3 1998 1013.7 1014.5 1013.7 1014.6 1015.2 1014.2 1010.0 1013.6 1014.8 1019.1 1020.3 1020.9 1015.4 1999 1017.2 1014.9 1013.3 1014.7 1013.9 1010.8 1009.3 1012.9 1013.5 1018.3 1018.0 1021.3 1014.8 2000 1014.8 1015.0 1013.8 1014.9 1012.2 1010.4 1011.8 1012.7 1013.6 1018.5 1019.9 1017.4 1014.6 2001 1017.7 1015.2 1014.6 1014.3 1012.3 1009.7 1009.5 1013.5 1015.5 1018.3 1018.1 1019.2 1014.8 2002 1016.7 1016.5 1015.1 1012.6 1012.9 1011.2 1011.4 1010.6 1016.3 1018.9 1019.8 1016.1 1014.8 2003 1016.4 1012.2 1013.5 1014.9 1015.6 1010.2 1007.3 1012.8 1014.9 1018.5 1019.5 1019.5 1014.6 2004 1014.0 1015.8 1017.2 1014.0 1012.6 1011.4 1011.8 1011.2 1017.2 1021.0 1018.2 1017.0 1015.1 2005 1015.4 1013.7 1013.2 1016.8 1014.3 1011.1 1010.2 1011.5 1014.0 1019.8 1019.6 1019.6 1014.9 MEAN 1016.1 1014.6 1013.9 1014.5 1014.2 1011.1 1009.7 1012.2 1015.2 1019.3 1019.1 1018.5 1014.9 =============================================================================================== TEHRAN 2006,MAY M.(S & A) STATION NAEIN (40801) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) FORM 47 LATITUDE 32 51 N LONGITUDE 53 5 E DATA PROCESSING CENTER ELEVATION 1549.0 M MAX. OF QNH PRESSURE IN HPA YEAR JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL 1992 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1028.3 1022.9 ****** DAY-HOUR **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** 4- 6 1- 6 1993 1026.1 1022.9 1023.7 1022.3 1020.7 1021.1 1017.8 1018.9 1022.3 1028.1 1025.3 1027.5 1028.1 DAY-HOUR 6- 6 9- 6 31- 6 1- 6 9- 6 23- 6 27- 6 31- 6 23- 6 17- 6 21- 6 26- 6 1994 1027.1 1021.4 1021.2 1026.0 1020.1 1015.9 1012.6 1015.2 1027.9 1027.6 1026.0 1025.2 1027.9 DAY-HOUR 10- 6 20- 6 18- 6 5- 6 15- 3 9- 6 13- 6 16- 6 23- 6 10- 6 2- 6 22- 6 1995 1027.5 1021.7 1024.6 1019.4 1022.1 1018.7 1012.4 1016.9 1021.9 1028.3 1026.1 1023.8 1028.3 DAY-HOUR 7- 6 14- 6 3- 6 4- 6 26- 6 1- 6 4- 6 25- 6 13- 6 27- 6 16- 6 10- 6 1996 1025.7 1021.1 1018.9 1020.9 1019.7 1016.5 1019.3 1020.7 1023.1 1027.6 1032.1 1026.8 1032.1 DAY-HOUR 26- 6 24- 6 29- 6 8- 6 17- 6 3- 6 4- 6 30- 6 25- 6 2- 6 18- 6 8- 6 1997 1023.6 1023.7 1026.0 1020.1 1023.2 1022.8 1012.1 1016.4 1022.5 1025.1 1029.9 1025.5 1029.9 DAY-HOUR 19- 6 17- 6 11- 6 13- 6 12- 6 18- 6 9- 6 25- 6 19- 6 9- 6 8- 6 28- 6 1998 1023.3 1028.6 1022.6 1026.2 1023.9 1020.8 1018.8 1019.0 1020.8 1026.2 1027.8 1028.5 1028.6 DAY-HOUR 4- 6 23- 6 28- 6 12- 6 8- 6 6- 6 20- 6 25- 6 13- 6 10- 6 21- 6 9- 6 1999 1029.3 1023.5 1022.5 1020.3 1022.3 1018.1 1015.5 1021.1 1021.2 1022.6 1025.4 1029.4 1029.4 DAY-HOUR 2- 6 12- 6 31- 6 11- 6 28- 6 1- 6 19- 6 20- 6 30- 6 27- 6 14- 6 6- 6 2000 1024.7 1024.3 1020.4 1021.4 1018.2 1017.3 1019.5 1018.2 1021.5 1024.7 1030.8 1025.9 1030.8 DAY-HOUR 31- 6 11- 6 21- 6 2- 6 4- 6 3- 6 30- 6 23- 6 29- 6 16- 6 17- 6 4- 6 2001 1022.6 1025.2 1024.7 1023.9 1017.8 1018.8 1017.1 1019.3 1023.7 1027.4 1026.7 1025.4 1027.4 DAY-HOUR 10- 6 9- 6 1- 6 2- 6 11- 9 2- 6 29- 6 14- 6 22- 6 10- 6 2- 6 28- 6 2002 1025.5 1027.2 1029.3 1022.5 1018.8 1018.6 1017.9 1016.6 1022.4 1025.4 1029.6 1027.3 1029.6 DAY-HOUR 26- 6 6- 6 11- 6 1- 6 17- 6 25- 6 29- 6 31- 6 22- 6 10- 6 18- 6 3- 6 2003 1025.1 1021.4 1024.3 1023.1 1023.6 1016.8 1015.2 1017.4 1023.3 1024.7 1030.4 1029.4 1030.4 DAY-HOUR 12- 6 6- 6 2- 6 8- 6 2- 6 2- 3 3- 6 4- 6 27- 6 15- 6 25- 6 12- 6 2004 1021.6 1023.5 1025.4 1020.9 1018.6 1019.5 1018.9 1017.5 1023.8 1026.8 1023.9 1028.8 1028.8 DAY-HOUR 12- 6 10- 6 9- 6 12- 6 18- 6 6- 6 18- 6 18- 6 27- 6 27- 6 1- 6 4- 6 2005 1024.0 1023.0 1019.9 1024.9 1019.4 1018.0 1016.0 1017.2 1018.5 1027.9 1025.0 1027.1 1027.9 DAY-HOUR 9- 6 15- 6 29- 6 6- 6 12- 6 16- 6 28- 6 17- 6 22- 6 12- 6 23- 6 29- 6 1992-2005 1029.3 1028.6 1029.3 1026.2 1023.9 1022.8 1019.5 1021.1 1027.9 1028.3 1032.1 1029.4 1032.1 YEAR-DAY 99- 2 98-23 2-11 98-12 98- 8 97-18 0-30 99-20 94-23 95-27 96-18 99- 6 96-18 =============================================================================================== TEHRAN 2006,MAY M.(S & A) STATION NAEIN (40801) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) FORM 48 LATITUDE 32 51 N LONGITUDE 53 5 E DATA PROCESSING CENTER ELEVATION 1549.0 M MIN. OF QNH PRESSURE IN HPA YEAR JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL 1992 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1007.4 1009.8 ****** DAY-HOUR **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** 26- 3 19-12 1993 1003.4 1005.9 1005.4 1006.1 1008.0 1005.5 1004.4 1004.8 1009.5 1013.8 1007.6 1010.4 1003.4 DAY-HOUR 8-12 3-12 12-12 13-12 7-12 3-15 12-15 12-15 3-15 3-12 14- 3 4-12 1994 1002.9 1003.1 1003.8 1005.9 1005.5 1002.2 1001.7 1003.7 1009.8 1013.5 1005.8 1002.6 1001.7 DAY-HOUR 16-12 12-12 12- 3 2-12 1-12 28-15 7-15 2-15 2-15 2-12 26- 3 4-12 1995 1011.2 1004.0 1005.4 1006.5 1009.6 1002.4 1000.9 1006.6 1009.5 1011.8 1008.7 1011.4 1000.9 DAY-HOUR 11-12 23-12 26-12 24-15 10-15 22-15 16-15 22-15 19-12 12-12 25-15 4-12 1996 1009.8 1001.9 1005.1 1006.8 1007.7 1004.5 1004.1 1005.7 1005.7 1009.7 1014.3 1013.0 1001.9 DAY-HOUR 6-15 5- 3 13-12 3-12 29-15 19-12 7-15 8-12 20-12 27-12 28-12 16-12 1997 1003.3 1007.5 999.6 1004.1 1006.9 1004.8 1001.4 1004.7 1009.1 1013.2 1013.3 1005.9 999.6 DAY-HOUR 17-12 27-12 25-12 10-12 4-15 30-15 16-15 5-15 2-15 23-12 19-12 10-12 1998 998.6 1001.7 1003.3 1005.1 1005.1 1007.6 1000.3 1006.7 1007.9 1011.0 1014.2 1012.3 998.6 DAY-HOUR 13- 9 15-12 15-12 21-15 30-12 29-15 8-15 22-15 4-15 1-12 1-12 21-12 1999 1007.5 1003.8 1004.5 1004.8 1002.6 1001.0 1003.6 1007.4 1007.5 1012.4 1010.2 1012.1 1001.0 DAY-HOUR 18-12 6- 3 2-12 8-12 20-15 24-15 14-15 14-15 15-15 31-12 26-12 15-12 2000 1005.7 1001.7 1005.9 1010.1 1006.2 1002.0 1004.0 1004.4 1003.1 1011.2 1012.8 1005.9 1001.7 DAY-HOUR 21-12 7-12 13-15 21-15 26-15 24-15 11-15 31-15 1-15 1-12 21-12 15-12 2001 1011.2 1000.5 1001.7 1006.0 1004.7 1002.5 1001.7 1005.8 1008.6 1012.3 1005.2 1010.1 1000.5 DAY-HOUR 19-12 21-12 25-15 9-15 25-15 6-15 10-15 27-12 5-12 1-12 18-12 5-12 2002 1008.4 1006.4 1006.4 1000.4 1006.9 1001.7 1003.9 1003.6 1010.4 1013.6 1012.1 1001.8 1000.4 DAY-HOUR 8-12 25-12 22-12 3-12 4-12 20-15 24-15 17-15 18-12 21-12 12-12 21-12 2003 1000.4 999.1 1001.7 1008.4 1008.2 1000.2 1001.0 1007.7 1008.7 1012.9 1010.1 1009.3 999.1 DAY-HOUR 28-15 19-12 26-15 17-12 29-12 30-15 25-15 1- 3 7-15 27-15 14-12 6-12 2004 1005.0 1006.1 1006.6 1000.8 999.7 1003.4 1002.5 1003.7 1010.8 1013.6 1006.7 1008.0 999.7 DAY-HOUR 27- 3 15-12 31-12 17- 9 13-12 17-15 10-15 4-15 11-15 3-12 23-12 16-12 2005 998.9 1006.5 999.4 1008.4 1002.9 1002.2 1001.2 1004.1 1007.7 1010.9 1011.9 1007.6 998.9 DAY-HOUR 23- 3 5- 3 24-12 27-12 5-15 20-15 6-15 8-15 5-12 4-15 8-12 24- 3 1992-2005 998.6 999.1 999.4 1000.4 999.7 1000.2 1000.3 1003.6 1003.1 1009.7 1005.2 1001.8 998.6 YEAR-DAY 98-13 3-19 5-24 2- 3 4-13 3-30 98- 8 2-17 0- 1 96-27 1-18 2-21 98-13 =============================================================================================== TEHRAN 2006,MAY M.(S & A) STATION NAEIN (40801) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) FORM 49 LATITUDE 32 51 N LONGITUDE 53 5 E DATA PROCESSING CENTER ELEVATION 1549.0 M AVERAGE OF QFF PRESSURE IN HPA YEAR JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL 1992 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1015.6 1017.1 ****** 1993 1019.6 1015.9 1013.0 1007.5 1005.3 998.9 997.7 1000.4 1003.9 1015.5 1016.1 1020.1 1009.5 1994 1017.6 1013.7 1010.8 1008.8 1004.6 995.7 992.9 995.8 1009.4 1014.7 1013.3 1019.8 1008.1 1995 1018.6 1015.1 1012.1 1007.6 1007.0 998.6 991.9 997.7 1003.2 1011.8 1015.0 1021.8 1008.4 1996 1022.1 1013.5 1010.5 1008.1 1005.6 998.6 999.0 998.5 1000.6 1011.4 1019.6 1018.8 1008.9 1997 1015.0 1015.3 1008.9 1006.2 1005.2 998.4 990.6 996.7 1003.9 1010.1 1016.5 1016.9 1007.0 1998 1014.9 1014.6 1010.1 1006.5 1004.9 1000.6 994.5 999.1 1002.6 1011.3 1015.1 1017.9 1007.7 1999 1018.3 1012.3 1010.1 1007.4 1002.5 995.9 994.4 998.7 1001.1 1009.6 1014.6 1020.9 1007.1 2000 1015.7 1014.7 1010.3 1005.7 999.8 996.6 997.3 998.4 1001.0 1011.2 1018.1 1016.9 1007.1 2001 1019.5 1014.3 1009.6 1005.1 1000.3 995.3 994.0 998.9 1003.4 1009.2 1014.3 1017.6 1006.8 2002 1017.4 1014.9 1010.4 1004.9 1001.8 997.2 996.4 995.2 1003.1 1009.6 1016.7 1016.4 1007.0 2003 1016.4 1009.8 1009.8 1006.7 1005.7 995.5 990.0 998.1 1003.0 1009.3 1016.9 1019.4 1006.7 2004 1013.4 1013.1 1012.0 1006.9 1001.6 997.0 997.2 995.9 1005.4 1012.9 1013.5 1017.9 1007.2 2005 1016.7 1014.1 1008.1 1008.7 1003.8 996.7 993.8 996.6 1000.8 1011.1 1016.6 1017.8 1007.1 MEAN 1017.3 1013.9 1010.4 1006.9 1003.7 997.3 994.6 997.7 1003.2 1011.4 1015.8 1018.5 1007.6 =============================================================================================== TEHRAN 2006,MAY M.(S & A) STATION NAEIN (40801) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) FORM 50 LATITUDE 32 51 N LONGITUDE 53 5 E DATA PROCESSING CENTER ELEVATION 1549.0 M MAX. OF QFF PRESSURE IN HPA YEAR JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL 1992 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1025.0 1028.5 ****** DAY-HOUR **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** 4- 6 29- 6 1993 1030.7 1026.4 1023.6 1017.2 1015.0 1012.0 1004.8 1007.9 1012.0 1024.7 1028.0 1028.4 1030.7 DAY-HOUR 6- 6 9- 6 23- 6 1- 3 9- 3 23- 9 28- 3 25- 3 23- 6 8- 3 30- 6 26- 6 1994 1031.1 1026.6 1020.0 1025.1 1012.9 1003.6 999.3 1001.3 1020.9 1024.4 1020.9 1033.2 1033.2 DAY-HOUR 10- 6 19- 6 18- 6 5- 9 19- 3 9- 6 3- 3 23- 3 23- 3 10- 3 10- 3 7-15 1995 1028.8 1024.6 1023.4 1014.6 1014.8 1011.9 997.8 1003.4 1014.0 1026.0 1028.2 1028.4 1028.8 DAY-HOUR 7- 6 12- 6 3- 3 7- 3 29- 3 1- 3 4- 3 25- 3 22- 3 27- 3 28- 6 20- 3 1996 1033.4 1023.2 1018.6 1020.5 1014.7 1005.2 1005.4 1008.4 1011.6 1022.6 1034.5 1029.2 1034.5 DAY-HOUR 14- 6 13- 6 29- 3 5- 3 7-15 28- 6 4- 3 31- 3 25- 6 20- 3 19- 3 4- 6 1997 1026.4 1027.6 1025.6 1018.7 1015.8 1007.6 998.7 1003.8 1011.2 1016.1 1027.8 1031.5 1031.5 DAY-HOUR 19- 6 7-15 11- 6 13- 3 7- 3 18- 6 9- 3 29- 3 19- 3 9- 6 8- 6 28- 6 1998 1026.7 1031.7 1020.2 1021.3 1018.7 1007.4 1005.2 1005.4 1010.7 1020.7 1023.7 1026.9 1031.7 DAY-HOUR 4- 6 23- 6 4- 6 7- 6 3- 6 6- 6 21- 3 8- 3 13- 3 10- 6 25- 3 29-15 1999 1033.7 1022.5 1022.1 1017.0 1009.3 1004.6 1002.6 1007.0 1013.5 1019.1 1029.9 1031.7 1033.7 DAY-HOUR 2- 9 12- 6 19- 3 11- 3 12- 3 17- 3 28- 6 20- 3 29- 3 27- 3 30- 3 6- 6 2000 1027.4 1027.2 1019.3 1014.7 1007.9 1007.7 1006.1 1005.7 1010.8 1020.9 1030.9 1025.7 1030.9 DAY-HOUR 31- 6 11- 6 4- 3 2- 6 4- 3 14- 3 31- 3 20- 9 26- 3 5- 3 17- 6 17- 6 2001 1032.9 1025.7 1023.7 1016.2 1008.0 1005.7 1003.6 1007.6 1015.0 1019.1 1027.2 1025.9 1032.9 DAY-HOUR 29- 6 10- 6 12- 3 1- 6 1- 3 2- 3 29- 3 14- 3 22- 3 10- 9 20-15 22-15 2002 1028.7 1028.1 1028.6 1017.8 1011.6 1006.3 1005.3 1002.6 1010.9 1014.7 1030.0 1028.1 1030.0 DAY-HOUR 25- 3 5- 6 11- 3 1- 6 9- 6 25- 6 31- 3 1- 3 30- 3 10- 6 18- 3 5- 3 2003 1024.8 1021.8 1028.6 1015.3 1017.9 1004.6 998.9 1003.7 1014.0 1016.2 1032.5 1035.4 1035.4 DAY-HOUR 8- 6 6- 6 2-15 2- 3 2- 3 1- 3 3- 3 31- 3 27- 6 16- 3 25-15 12- 6 2004 1025.5 1022.3 1022.3 1015.2 1008.6 1006.7 1005.8 1003.4 1014.7 1021.2 1026.1 1033.0 1033.0 DAY-HOUR 1- 3 8- 6 22- 3 11-15 18- 6 1- 3 18- 9 30- 3 27- 3 27- 6 29- 3 4- 6 2005 1032.1 1026.5 1018.2 1023.1 1009.3 1004.5 1001.6 1004.3 1006.2 1022.0 1023.7 1031.5 1032.1 DAY-HOUR 13- 6 15- 3 27- 3 6- 6 8- 3 9- 3 29- 3 17- 3 22- 3 24- 3 29- 6 31-15 1992-2005 1033.7 1031.7 1028.6 1025.1 1018.7 1012.0 1006.1 1008.4 1020.9 1026.0 1034.5 1035.4 1035.4 YEAR-DAY 99- 2 98-23 2-11 94- 5 98- 3 93-23 0-31 96-31 94-23 95-27 96-19 3-12 3-12 =============================================================================================== TEHRAN 2006,MAY M.(S & A) STATION NAEIN (40801) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) FORM 51 LATITUDE 32 51 N LONGITUDE 53 5 E DATA PROCESSING CENTER ELEVATION 1549.0 M MIN. OF QFF PRESSURE IN HPA YEAR JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL 1992 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1002.7 1010.1 ****** DAY-HOUR **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** 26- 3 13-12 1993 1003.5 1002.7 1002.8 998.4 999.3 993.0 990.3 990.9 996.4 1004.5 1002.2 1010.6 990.3 DAY-HOUR 8-12 21-12 8-12 21-12 7-12 18-15 12-15 12-15 3-12 1-12 14- 3 5- 9 1994 999.3 998.4 997.7 997.9 996.2 987.0 985.7 989.2 997.2 1005.5 1002.9 999.3 985.7 DAY-HOUR 16-12 1- 3 7-12 2-12 1-12 22-15 7-15 2-15 2-15 1-12 26- 3 4- 9 1995 1005.5 1000.0 998.1 1000.9 999.8 987.6 985.5 992.6 996.6 1000.7 1003.7 1012.1 985.5 DAY-HOUR 17-12 23-12 26-12 19-12 7-12 22-12 16-15 22-15 20-12 12-12 25-12 4-12 1996 1008.0 1000.7 1001.0 998.8 994.4 991.4 990.0 990.7 993.5 1000.0 1010.0 1009.6 990.0 DAY-HOUR 6-15 11- 3 13-12 10-12 29-15 19-12 7-15 8-12 21-12 27-12 2-15 25-12 1997 998.2 1000.0 993.9 995.3 995.9 990.5 984.0 989.0 994.8 1002.4 1009.1 1001.3 984.0 DAY-HOUR 16- 9 22-12 25-12 10-12 4-12 30-12 16-12 5-12 2-12 6-12 19-12 10-12 1998 998.8 998.2 995.8 994.4 992.8 991.8 982.5 991.2 993.9 998.7 1006.8 1006.2 982.5 DAY-HOUR 13- 9 8-12 18-12 21-15 29-15 29-15 8-15 22-12 4-12 1-12 1-12 18-12 1999 1006.2 999.5 1000.0 995.7 989.1 985.9 988.6 993.2 993.2 1004.0 1002.2 1007.9 985.9 DAY-HOUR 18-12 20-12 21-12 8-12 20-15 25-15 5-15 13-12 16-15 31-12 1-12 15-12 2000 1004.0 999.0 996.8 1000.2 991.5 985.2 988.0 990.4 989.5 1000.8 1008.5 1004.6 985.2 DAY-HOUR 21-15 7-12 24-12 23-12 26-15 24-18 12-12 30-12 1-12 1-12 2-12 11-12 2001 1010.7 995.5 995.5 995.7 991.5 987.0 985.1 989.5 994.2 1000.2 998.7 1005.3 985.1 DAY-HOUR 4- 9 21-12 25-15 9-12 25-15 6-15 10-15 27-12 5-12 1-12 18-12 5-12 2002 1004.4 999.1 997.1 993.0 991.1 987.0 988.3 987.0 997.0 1004.2 1003.5 997.7 987.0 DAY-HOUR 8-12 25-12 28-12 3-12 20-12 20-15 23-15 17-12 10-12 14-12 12-12 21-12 2003 997.7 994.0 994.3 996.3 997.2 984.8 983.9 989.7 995.0 1001.8 1004.7 1005.6 983.9 DAY-HOUR 28-15 19-12 26-15 28-12 23-12 30-12 30-15 1- 3 10-12 5-12 14-12 19-12 2004 1002.2 997.7 997.2 990.4 987.3 988.3 986.2 987.7 996.7 1003.2 998.9 1005.4 986.2 DAY-HOUR 27- 3 15-12 31-12 17- 9 13-15 17-15 10-15 4-15 11-12 3-12 23-12 16- 9 2005 997.1 1003.0 991.5 995.9 993.7 985.9 984.3 986.5 992.7 1000.9 1004.7 1002.6 984.3 DAY-HOUR 3-12 21-12 24-12 27-12 5-12 20-12 6-15 8- 9 5-12 4-12 6-12 24- 3 1992-2005 997.1 994.0 991.5 990.4 987.3 984.8 982.5 986.5 989.5 998.7 998.7 997.7 982.5 YEAR-DAY 5- 3 3-19 5-24 4-17 4-13 3-30 98- 8 5- 8 0- 1 98- 1 1-18 2-21 98- 8 =============================================================================================== TEHRAN 2006,MAY M.(S & A) STATION NAEIN (40801) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) FORM 52 LATITUDE 32 51 N LONGITUDE 53 5 E DATA PROCESSING CENTER ELEVATION 1549.0 M AVERAGE OF COMPUTED QFF PRESSURE IN HPA YEAR JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL 1992 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1993 ****** ****** ****** ****** 1004.3 997.9 996.4 999.3 1003.1 ****** ****** ****** ****** 1994 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1995 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1996 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1997 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1998 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1999 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 2000 ****** ****** ****** ****** ****** 996.5 997.0 ****** ****** ****** ****** ****** ****** 2001 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 2002 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 2003 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 2004 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 2005 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MEAN ****** ****** ****** ****** 1004.3 997.2 996.7 999.3 1003.1 ****** ****** ****** 1000.1 =============================================================================================== TEHRAN 2006,MAY M.(S & A) STATION NAEIN (40801) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) FORM 53 LATITUDE 32 51 N LONGITUDE 53 5 E DATA PROCESSING CENTER ELEVATION 1549.0 M MAX. OF COMPUTED QFF PRESSURE IN HPA YEAR JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL 1992 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY-HOUR **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** 1993 ****** ****** ****** ****** 1013.8 1010.0 1003.8 1006.9 1011.1 ****** ****** ****** ****** DAY-HOUR **-** **-** **-** **-** 9- 3 23- 3 28- 3 25- 3 23- 6 **-** **-** **-** 1994 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY-HOUR **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** 1995 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY-HOUR **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** 1996 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY-HOUR **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** 1997 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY-HOUR **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** 1998 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY-HOUR **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** 1999 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY-HOUR **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** 2000 ****** ****** ****** ****** ****** 1006.7 1005.3 ****** ****** ****** ****** ****** ****** DAY-HOUR **-** **-** **-** **-** **-** 14- 3 31- 3 **-** **-** **-** **-** **-** 2001 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY-HOUR **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** 2002 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY-HOUR **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** 2003 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY-HOUR **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** 2004 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY-HOUR **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** 2005 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY-HOUR **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** 1992-2005 ****** ****** ****** ****** 1013.8 1010.0 1005.3 1006.9 1011.1 ****** ****** ****** 1013.8 YEAR-DAY **-** **-** **-** **-** 93- 9 93-23 0-31 93-25 93-23 **-** **-** **-** 93- 9 =============================================================================================== TEHRAN 2006,MAY M.(S & A) STATION NAEIN (40801) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) FORM 54 LATITUDE 32 51 N LONGITUDE 53 5 E DATA PROCESSING CENTER ELEVATION 1549.0 M MIN. OF COMPUTED QFF PRESSURE IN HPA YEAR JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL 1992 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY-HOUR **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** 1993 ****** ****** ****** ****** 998.2 991.8 988.9 989.7 995.5 ****** ****** ****** ****** DAY-HOUR **-** **-** **-** **-** 31-12 18-15 13-15 12-15 3-12 **-** **-** **-** 1994 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY-HOUR **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** 1995 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY-HOUR **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** 1996 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY-HOUR **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** 1997 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY-HOUR **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** 1998 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY-HOUR **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** 1999 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY-HOUR **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** 2000 ****** ****** ****** ****** ****** 985.4 987.8 ****** ****** ****** ****** ****** ****** DAY-HOUR **-** **-** **-** **-** **-** 24-18 11-12 **-** **-** **-** **-** **-** 2001 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY-HOUR **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** 2002 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY-HOUR **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** 2003 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY-HOUR **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** 2004 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY-HOUR **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** 2005 ****** ****** *****