STATION NATANZ (99421) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 33 32 N LONGITUDE 51 54 E DATA PROCESSING CENTER ELEVATION 1684.9 M MEANS AND EXTREMES FOR THE YEAR 1992 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AIR TEMPERATURE (C) -1.1 2.4 4.6 14.0 16.6 25.5 30.4 26.1 22.8 17.3 11.7 3.3 14.5 MINIMUN AIR TEMPERATURE (C) -5.6 -2.8 -0.5 8.1 11.0 18.8 23.7 19.6 16.3 11.1 6.3 -0.4 8.8 DAYS WITH MINIMUM TEMP. >=21 0 0 0 0 0 7 27 8 0 0 0 0 42 DAYS WITH MINIMUM TEMP. <=-4 18 14 6 0 0 0 0 0 0 0 1 4 43 DAYS WITH FREEZING MIN.<= 0 31 26 17 0 0 0 0 0 0 0 4 17 95 TEMPERATURE RECORDS LOWEST(C) -14.0 -6.5 -8.0 2.0 2.5 15.0 19.0 14.0 10.0 7.0 -6.0 -8.5 -14.0 DAY 26 27 12 1 5 9 12 31 30 8 27 29 MAXIMUM AIR TEMPERATURE (C) 2.4 7.0 8.3 17.7 20.0 28.9 33.7 29.7 26.0 20.6 14.9 5.8 17.9 DAYS WITH MAXIMUM TEMP. >=30 0 0 0 0 0 11 27 17 1 0 0 0 56 DAYS WITH MAXIMUM TEMP. <= 0 9 0 2 0 0 0 0 0 0 0 0 2 13 TEMPERATURE RECORDS HIGHEST(C) 9.0 15.0 19.0 24.5 27.5 35.0 37.6 34.0 31.0 24.0 19.5 15.8 37.6 DAY 2 24 30 22 29 30 5 1 25 4 7 12 DIF. BETWEEN (MAX.-MIN.) (C) 8.0 9.8 8.8 9.6 9.0 10.1 10.0 10.1 9.7 9.5 8.6 6.2 9.1 MEAN DAILY TEMP. (MDT) (C) -1.6 2.1 3.9 12.9 15.5 23.8 28.7 24.7 21.2 15.8 10.6 2.7 13.4 COOLING DEG. DAYS(BASE 21 0C) 0.0 0.0 0.0 0.0 3.8 75.0 221.1 104.9 26.8 0.0 0.0 0.0 431.7 HEATING DEG. DAYS(BASE 18 0C) 583.6 461.4 437.3 155.2 99.4 0.0 0.0 0.0 4.9 70.4 221.3 427.6 2461.2 DEWPOINT (MEAN C) ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** MIXING RATIO (G/KG) ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** VAPOUR PRESSURE (HPA) ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** SATURATION DEF. (HPA) ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** RELATIVE HUMIDITY (MEAN %) *** *** *** *** *** *** *** *** *** *** *** *** *** RELATIVE HUMIDITY (MAX. %) *** *** *** *** *** *** *** *** *** *** *** *** *** RELATIVE HUMIDITY (MIN. %) *** *** *** *** *** *** *** *** *** *** *** *** *** RELATIVE HUMIDITY (MEAN% 03UTC) *** *** *** *** *** *** *** *** *** *** *** *** *** RELATIVE HUMIDITY (MEAN% 09UTC) *** *** *** *** *** *** *** *** *** *** *** *** *** RELATIVE HUMIDITY (MEAN% 15UTC) *** *** *** *** *** *** *** *** *** *** *** *** *** RH=0 => RELATIVE HUMIDITY < 0.5% AMOUNT OF PRECIPITATION MM. 47.8 16.0 47.9 33.5 84.7 1.0 0.0 3.0 0.0 0.0 0.0 20.1 254.0 DAYS WITH PRECIPITATION >=10 1 1 2 1 4 0 0 0 0 0 0 0 9 DAYS WITH PRECIPITATION >= 5 3 1 4 3 5 0 0 0 0 0 0 2 18 DAYS WITH PRECIPITATION >= 1 7 2 6 5 13 1 0 1 0 0 0 4 39 DAYS WITH PRECIPITATION 8 2 8 8 15 1 1 1 0 0 0 9 53 GREATEST DAILY PRECIPITATION 20.0 13.0 15.0 16.0 26.0 1.0 0.0 3.0 0.0 0.0 0.0 8.0 26.0 DAY 25 25 18 25 7 15 ** 13 ** ** ** 9 DAY WITH THUNDER STORM 0 0 0 1 2 1 0 0 0 0 0 0 4 DAYS WITH SNOW OR SLEET 6 2 3 0 0 0 0 0 0 0 0 7 18 DAYS WITH DUST 1 0 0 0 0 0 0 0 0 0 2 1 4 WIND DIRECTION (PREVAILING) 45 45 45 360 360 45 45 90 360 45 225 90 45 PREVAILING WIND SPEED(KNOTS) 5.3 6.3 6.3 7.5 6.8 6.1 7.5 5.4 4.6 5.0 10.4 4.4 5.6 PREVAILING WIND PERCENT 13.5 11.0 9.0 23.3 25.8 21.3 22.6 21.9 19.3 18.1 20.0 11.4 15.3 CALMS PERCENT OF WIND 66.5 56.6 61.3 24.0 29.7 20.7 21.9 34.8 38.0 36.8 34.7 58.6 40.2 NO. OF WIND OBSERVATION 155 145 155 150 155 150 155 155 150 155 150 140 1815 VECTOR WIND DIRECTION (MEAN) 70 161 343 348 13 10 43 77 52 39 208 78 34 VECTOR WIND MAGNITUDE(KNOTS) 0.5 0.6 0.8 1.8 1.8 2.1 2.5 2.1 1.2 1.4 1.5 0.3 0.9 WIND STEADINESES (MEAN %) 27.8 18.8 28.6 29.5 35.3 36.8 47.2 60.0 38.7 46.7 31.9 15.0 23.1 WIND SPEED (MEAN KNOTS) 1.8 3.2 2.8 6.1 5.1 5.7 5.3 3.5 3.1 3.0 4.7 2.0 3.9 FASTEST WIND DIRECTION 180 180 270 260 220 320 220 270 180 90 220 200 220 FASTEST WIND SPEED (KNOTS) 16 27 19 29 23 17 16 16 16 14 33 16 33 DAY 2 24 30 14 23 14 2 12 25 27 25 13 DAYS WITH SKY CLEAR (0-2)/8 14 22 15 12 11 26 26 29 30 30 15 11 241 DAYS WITH P.CLOUDY (3-6)/8 11 5 14 14 16 3 5 2 0 1 13 11 95 DAYS WITH CLOUDY (7-8)/8 6 2 2 4 4 1 0 0 0 0 2 5 26 DAYS WITH VISIBILITY =< 2 KM 3 2 2 1 4 0 0 0 0 0 1 5 18 DURATION OF SUNSHINE HOURS ****** ****** ****** ****** ****** ****** ****** ****** 314.0 296.1 196.4 143.3 ****** ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION NATANZ (99421) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 33 32 N LONGITUDE 51 54 E DATA PROCESSING CENTER ELEVATION 1684.9 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 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY-HOUR **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** MIN. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY-HOUR **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** MEAN QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY-HOUR **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** MIN. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY-HOUR **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY-HOUR **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY-HOUR **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** PRESSURE AT HOUR 0000 UTC. MEAN QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** PRESSURE AT HOUR 0300 UTC. MEAN QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION NATANZ (99421) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 33 32 N LONGITUDE 51 54 E DATA PROCESSING CENTER ELEVATION 1684.9 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 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** PRESSURE AT HOUR 0900 UTC. MEAN QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** PRESSURE AT HOUR 1200 UTC. MEAN QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION NATANZ (99421) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 33 32 N LONGITUDE 51 54 E DATA PROCESSING CENTER ELEVATION 1684.9 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 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** PRESSURE AT HOUR 1800 UTC. MEAN QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** PRESSURE AT HOUR 2100 UTC. MEAN QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION NATANZ (99421) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 33 32 N LONGITUDE 51 54 E DATA PROCESSING CENTER ELEVATION 1684.9 M MEANS AND EXTREMES FOR THE YEAR 1993 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AIR TEMPERATURE (C) -0.0 3.8 7.6 15.7 20.1 26.9 28.5 28.0 25.9 16.0 8.3 6.3 15.6 MINIMUN AIR TEMPERATURE (C) -3.9 -0.8 2.4 9.7 13.5 19.6 21.5 20.7 18.9 9.8 3.8 1.4 9.7 DAYS WITH MINIMUM TEMP. >=21 0 0 0 0 0 12 21 16 11 0 0 0 60 DAYS WITH MINIMUM TEMP. <=-4 21 5 1 0 0 0 0 0 0 0 1 0 28 DAYS WITH FREEZING MIN.<= 0 28 17 7 0 0 0 0 0 0 0 7 10 69 TEMPERATURE RECORDS LOWEST(C) -9.0 -9.0 -4.0 6.0 7.0 15.0 19.0 17.0 13.5 5.0 -4.5 -3.2 -9.0 DAY 21 6 23 14 1 5 31 3 28 8 30 1 MAXIMUM AIR TEMPERATURE (C) 2.6 7.4 11.2 19.2 23.7 30.5 32.3 31.8 29.5 19.2 11.9 9.9 19.1 DAYS WITH MAXIMUM TEMP. >=30 0 0 0 0 0 18 29 27 15 0 0 0 89 DAYS WITH MAXIMUM TEMP. <= 0 12 0 0 0 0 0 0 0 0 0 0 0 12 TEMPERATURE RECORDS HIGHEST(C) 12.6 17.8 18.6 27.4 29.2 35.0 36.2 35.8 34.4 28.0 22.0 16.0 36.2 DAY 29 28 31 20 31 30 3 14 3 1 1 18 DIF. BETWEEN (MAX.-MIN.) (C) 6.5 8.2 8.8 9.5 10.2 10.9 10.8 11.1 10.6 9.4 8.1 8.5 9.4 MEAN DAILY TEMP. (MDT) (C) -0.6 3.3 6.8 14.4 18.6 25.1 26.9 26.3 24.2 14.5 7.8 5.7 14.4 COOLING DEG. DAYS(BASE 21 0C) 0.0 0.0 0.0 0.4 13.5 122.9 182.8 163.1 100.1 2.3 0.0 0.0 585.3 HEATING DEG. DAYS(BASE 18 0C) 577.8 410.8 347.9 114.9 34.3 0.0 0.0 0.0 0.0 119.2 305.1 382.4 2292.5 DEWPOINT (MEAN C) ***** ***** -5.2 0.1 2.4 -0.0 3.3 1.3 -2.5 -5.5 -2.6 -4.2 ***** MIXING RATIO (G/KG) ****** ****** 3.36 4.97 5.63 4.74 6.01 5.23 3.96 3.24 4.03 3.43 ****** VAPOUR PRESSURE (HPA) ****** ****** 4.45 6.57 7.45 6.27 7.93 6.92 5.26 4.33 5.36 4.57 ****** SATURATION DEF. (HPA) ****** ****** 6.41 11.79 16.78 30.00 31.67 31.55 29.00 14.27 6.19 5.23 ****** RELATIVE HUMIDITY (MEAN %) *** *** 44 41 33 19 21 19 17 25 50 50 *** RELATIVE HUMIDITY (MAX. %) *** *** 59 53 46 27 32 29 24 34 64 61 *** RELATIVE HUMIDITY (MIN. %) *** *** 33 32 26 14 15 14 12 18 41 40 *** RELATIVE HUMIDITY (MEAN% 03UTC) *** *** 52 48 43 26 31 29 23 33 59 58 *** RELATIVE HUMIDITY (MEAN% 09UTC) *** *** 41 37 30 17 18 16 14 21 45 44 *** RELATIVE HUMIDITY (MEAN% 15UTC) *** *** 46 41 32 16 17 16 17 27 53 55 *** RH=0 => RELATIVE HUMIDITY < 0.5% AMOUNT OF PRECIPITATION MM. 21.1 40.8 48.1 30.7 10.3 0.0 0.0 0.2 0.3 0.0 25.4 0.3 177.2 DAYS WITH PRECIPITATION >=10 0 2 1 0 0 0 0 0 0 0 1 0 4 DAYS WITH PRECIPITATION >= 5 2 4 3 2 1 0 0 0 0 0 1 0 13 DAYS WITH PRECIPITATION >= 1 6 8 7 7 2 0 0 0 0 0 4 0 34 DAYS WITH PRECIPITATION 9 9 10 7 7 0 0 1 1 0 5 1 50 GREATEST DAILY PRECIPITATION 7.2 10.0 20.0 9.5 8.0 0.0 0.0 0.2 0.3 0.0 16.0 0.3 20.0 DAY 7 3 9 27 6 ** ** 28 27 ** 12 16 DAY WITH THUNDER STORM 0 0 0 3 2 0 0 1 0 0 1 0 7 DAYS WITH SNOW OR SLEET 7 2 2 0 0 0 0 0 0 0 0 0 11 DAYS WITH DUST 0 1 0 0 0 0 1 0 0 0 0 0 2 WIND DIRECTION (PREVAILING) 45 45 45 45 360 45 45 45 45 45 45 45 45 PREVAILING WIND SPEED(KNOTS) 4.7 5.8 5.5 5.2 4.9 5.8 8.6 7.3 5.8 5.9 5.4 3.7 5.9 PREVAILING WIND PERCENT 17.4 12.9 16.1 14.7 20.6 21.3 22.6 23.2 17.3 18.7 12.7 11.6 17.2 CALMS PERCENT OF WIND 46.5 47.9 34.2 43.3 36.8 40.7 29.0 40.6 44.0 47.7 54.7 74.2 44.9 NO. OF WIND OBSERVATION 155 140 155 150 155 150 155 155 150 155 150 155 1825 VECTOR WIND DIRECTION (MEAN) 59 33 259 349 10 40 52 67 79 59 244 46 51 VECTOR WIND MAGNITUDE(KNOTS) 0.8 0.5 0.2 0.6 1.1 2.5 3.5 3.0 1.7 1.5 0.5 0.6 1.2 WIND STEADINESES (MEAN %) 32.0 14.3 4.0 16.2 27.5 62.5 64.8 69.8 40.5 48.4 13.2 50.0 32.4 WIND SPEED (MEAN KNOTS) 2.5 3.5 5.0 3.7 4.0 4.0 5.4 4.3 4.2 3.1 3.8 1.2 3.7 FASTEST WIND DIRECTION 360 240 260 260 260 330 30 90 240 100 220 330 260 FASTEST WIND SPEED (KNOTS) 12 31 39 19 23 16 23 19 27 19 33 16 39 DAY 8 12 8 7 3 1 7 5 24 31 12 1 DAYS WITH SKY CLEAR (0-2)/8 16 9 12 9 8 29 28 27 28 18 14 17 215 DAYS WITH P.CLOUDY (3-6)/8 6 10 11 10 15 1 3 4 2 12 12 11 97 DAYS WITH CLOUDY (7-8)/8 9 9 8 11 8 0 0 0 0 1 3 3 52 DAYS WITH VISIBILITY =< 2 KM 6 7 0 0 0 0 0 0 0 0 4 1 18 DURATION OF SUNSHINE HOURS 159.4 167.6 202.6 208.4 239.0 367.9 374.6 303.9 ****** ****** ****** ****** ****** ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION NATANZ (99421) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 33 32 N LONGITUDE 51 54 E DATA PROCESSING CENTER ELEVATION 1684.9 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 ****** ****** 830.5 830.4 831.3 829.2 829.0 830.7 831.9 837.0 833.5 834.9 ****** MAX. QFE PRESSURE IN HPA ****** ****** 838.3 836.7 836.0 836.8 834.7 835.1 837.9 842.3 839.8 841.2 ****** DAY-HOUR **-** **-** 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 ****** ****** 822.3 824.2 826.8 823.7 823.8 824.3 827.1 830.1 823.7 827.1 ****** DAY-HOUR **-** **-** 5-15 13-12 7-12 3-15 12-12 12-15 3-12 28-12 14- 3 4-12 MEAN QNH PRESSURE IN HPA ****** ****** 1017.6 1017.5 1018.6 1016.1 1015.9 1017.8 1019.2 1025.3 1021.2 1022.8 ****** MAX. QNH PRESSURE IN HPA ****** ****** 1026.8 1024.9 1024.1 1025.1 1022.6 1023.1 1026.4 1031.5 1028.6 1030.3 ****** DAY-HOUR **-** **-** 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 ****** ****** 1008.0 1010.2 1013.3 1009.6 1009.7 1010.3 1013.6 1017.2 1009.6 1013.6 ****** DAY-HOUR **-** **-** 5-15 13-12 7-12 3-15 12-12 12-15 3-12 28-12 14- 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 ****** ****** 830.7 830.9 831.7 829.9 829.5 831.1 832.1 837.2 833.4 835.0 ****** MAX. QFE PRESSURE IN HPA ****** ****** 837.4 836.5 835.7 836.4 833.8 834.2 836.7 841.7 839.2 840.5 ****** DAY ** ** 31 1 9 23 27 31 16 17 21 27 MIN. QFE PRESSURE IN HPA ****** ****** 822.8 826.3 827.8 826.5 825.1 826.1 829.0 832.4 823.7 828.1 ****** DAY ** ** 22 27 7 4 13 12 3 3 14 5 MEAN QNH PRESSURE IN HPA ****** ****** 1017.8 1018.1 1019.1 1016.9 1016.5 1018.3 1019.6 1025.6 1021.0 1023.0 ****** MAX. QNH PRESSURE IN HPA ****** ****** 1025.8 1024.7 1023.8 1024.6 1021.5 1022.0 1024.9 1030.8 1027.9 1029.4 ****** DAY ** ** 31 1 9 23 27 31 16 17 21 27 MIN. QNH PRESSURE IN HPA ****** ****** 1008.6 1012.7 1014.4 1012.9 1011.3 1012.4 1015.9 1019.9 1009.6 1014.8 ****** DAY ** ** 22 27 7 4 13 12 3 3 14 5 MEAN QFF PRESSURE IN HPA ****** ****** 1016.3 1010.7 1008.7 1002.1 1000.3 1003.1 1006.0 1018.8 1018.9 1023.1 ****** MAX. QFF PRESSURE IN HPA ****** ****** 1025.3 1018.3 1017.9 1012.8 1005.6 1008.6 1013.3 1024.4 1029.5 1029.6 ****** DAY ** ** 23 1 9 23 27 25 16 8 30 7 MIN. QFF PRESSURE IN HPA ****** ****** 1007.9 1003.3 1003.4 998.0 995.0 996.3 998.9 1008.9 1004.2 1015.9 ****** DAY ** ** 22 21 29 16 13 12 3 3 14 2 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION NATANZ (99421) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 33 32 N LONGITUDE 51 54 E DATA PROCESSING CENTER ELEVATION 1684.9 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 ****** ****** 831.4 831.4 832.2 830.3 830.0 831.8 833.1 838.0 834.4 835.7 ****** MAX. QFE PRESSURE IN HPA ****** ****** 838.3 836.7 836.0 836.8 834.7 835.1 837.9 842.3 839.8 841.2 ****** DAY ** ** 31 1 9 23 27 31 23 17 21 26 MIN. QFE PRESSURE IN HPA ****** ****** 824.3 826.4 828.0 827.0 825.8 826.8 829.6 832.9 826.6 828.9 ****** DAY ** ** 22 13 7 3 12 12 3 28 14 5 MEAN QNH PRESSURE IN HPA ****** ****** 1018.7 1018.7 1019.6 1017.4 1017.1 1019.2 1020.7 1026.5 1022.2 1023.7 ****** MAX. QNH PRESSURE IN HPA ****** ****** 1026.8 1024.9 1024.1 1025.1 1022.6 1023.1 1026.4 1031.5 1028.6 1030.3 ****** DAY ** ** 31 1 9 23 27 31 23 17 21 26 MIN. QNH PRESSURE IN HPA ****** ****** 1010.3 1012.8 1014.7 1013.5 1012.1 1013.3 1016.6 1020.5 1013.0 1015.7 ****** DAY ** ** 22 13 7 3 12 12 3 28 14 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 ****** ****** 830.8 830.6 831.5 829.7 829.4 831.1 832.2 837.1 833.6 834.6 ****** MAX. QFE PRESSURE IN HPA ****** ****** 837.5 836.1 835.2 835.7 834.2 834.4 836.9 841.5 838.9 839.7 ****** DAY ** ** 31 16 9 23 27 30 23 17 21 26 MIN. QFE PRESSURE IN HPA ****** ****** 823.8 825.3 827.5 826.1 825.2 826.4 828.6 831.7 826.7 827.7 ****** DAY ** ** 12 13 7 3 12 12 3 28 11 5 MEAN QNH PRESSURE IN HPA ****** ****** 1017.9 1017.8 1018.8 1016.6 1016.3 1018.3 1019.7 1025.4 1021.3 1022.5 ****** MAX. QNH PRESSURE IN HPA ****** ****** 1025.9 1024.2 1023.2 1023.8 1022.0 1022.2 1025.2 1030.6 1027.5 1028.5 ****** DAY ** ** 31 16 9 23 27 30 23 17 21 26 MIN. QNH PRESSURE IN HPA ****** ****** 1009.7 1011.5 1014.1 1012.4 1011.4 1012.8 1015.4 1019.0 1013.2 1014.3 ****** DAY ** ** 12 13 7 3 12 12 3 28 11 5 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** PRESSURE AT HOUR 1200 UTC. MEAN QFE PRESSURE IN HPA ****** ****** 829.6 829.5 830.5 828.2 828.2 829.8 830.9 836.2 833.1 834.3 ****** MAX. QFE PRESSURE IN HPA ****** ****** 835.9 835.1 835.0 834.6 833.2 832.9 835.7 840.9 838.4 839.7 ****** DAY ** ** 30 16 9 22 27 30 23 17 21 26 MIN. QFE PRESSURE IN HPA ****** ****** 823.9 824.2 826.8 823.9 823.8 824.5 827.1 830.1 825.7 827.1 ****** DAY ** ** 12 13 7 3 12 12 3 28 11 4 MEAN QNH PRESSURE IN HPA ****** ****** 1016.6 1016.4 1017.7 1014.9 1015.0 1016.8 1018.2 1024.4 1020.7 1022.1 ****** MAX. QNH PRESSURE IN HPA ****** ****** 1024.0 1023.1 1022.9 1022.5 1020.8 1020.5 1023.8 1029.9 1026.9 1028.5 ****** DAY ** ** 30 16 9 22 27 30 23 17 21 26 MIN. QNH PRESSURE IN HPA ****** ****** 1009.9 1010.2 1013.3 1009.9 1009.7 1010.6 1013.6 1017.2 1012.0 1013.6 ****** DAY ** ** 12 13 7 3 12 12 3 28 11 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 NATANZ (99421) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 33 32 N LONGITUDE 51 54 E DATA PROCESSING CENTER ELEVATION 1684.9 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 ****** ****** 830.0 829.8 830.6 828.1 827.9 829.6 831.0 836.5 833.4 834.8 ****** MAX. QFE PRESSURE IN HPA ****** ****** 836.1 835.5 834.2 834.5 832.7 833.0 835.8 840.9 838.4 840.3 ****** DAY ** ** 30 16 9 22 27 30 23 16 21 26 MIN. QFE PRESSURE IN HPA ****** ****** 822.3 824.5 827.2 823.7 823.8 824.3 827.7 830.8 825.5 827.6 ****** DAY ** ** 5 12 7 3 12 12 3 28 13 4 MEAN QNH PRESSURE IN HPA ****** ****** 1017.0 1016.8 1017.7 1014.8 1014.6 1016.6 1018.2 1024.7 1021.0 1022.7 ****** MAX. QNH PRESSURE IN HPA ****** ****** 1024.2 1023.5 1022.0 1022.4 1020.2 1020.6 1023.9 1029.9 1026.9 1029.2 ****** DAY ** ** 30 16 9 22 27 30 23 16 21 26 MIN. QNH PRESSURE IN HPA ****** ****** 1008.0 1010.6 1013.7 1009.6 1009.7 1010.3 1014.3 1018.0 1011.7 1014.2 ****** DAY ** ** 5 12 7 3 12 12 3 28 13 4 MEAN QFF PRESSURE IN HPA ****** ****** 1015.3 1009.3 1007.2 999.9 998.6 1001.4 1004.6 1017.9 1019.0 1022.7 ****** MAX. QFF PRESSURE IN HPA ****** ****** 1025.1 1015.3 1015.7 1011.1 1004.7 1006.6 1011.4 1023.5 1029.3 1029.7 ****** DAY ** ** 23 16 9 22 27 25 23 8 30 6 MIN. QFF PRESSURE IN HPA ****** ****** 1004.3 1000.3 1001.9 994.8 993.4 994.5 997.2 1006.9 1005.2 1015.3 ****** DAY ** ** 5 20 20 15 12 12 3 2 11 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 NATANZ (99421) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 33 32 N LONGITUDE 51 54 E DATA PROCESSING CENTER ELEVATION 1684.9 M MEANS AND EXTREMES FOR THE YEAR 1994 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AIR TEMPERATURE (C) 4.8 4.6 10.5 16.9 21.0 27.2 30.4 30.6 21.9 15.9 12.3 2.7 16.6 MINIMUN AIR TEMPERATURE (C) 0.2 -0.9 5.0 10.7 14.4 19.7 23.3 23.3 15.5 10.9 7.0 -2.1 10.6 DAYS WITH MINIMUM TEMP. >=21 0 0 0 0 0 10 28 29 0 0 0 0 67 DAYS WITH MINIMUM TEMP. <=-4 1 4 0 0 0 0 0 0 0 0 0 12 17 DAYS WITH FREEZING MIN.<= 0 18 21 3 0 0 0 0 0 0 0 0 20 62 TEMPERATURE RECORDS LOWEST(C) -6.0 -8.5 0.0 2.0 8.0 12.0 18.0 19.4 8.4 8.0 1.4 -11.6 -11.6 DAY 25 19 15 5 7 5 1 26 20 30 10 7 MAXIMUM AIR TEMPERATURE (C) 8.1 8.6 14.0 20.4 24.7 31.1 34.4 34.4 25.3 18.8 15.5 5.9 20.1 DAYS WITH MAXIMUM TEMP. >=30 0 0 0 0 0 20 29 31 2 0 0 0 82 DAYS WITH MAXIMUM TEMP. <= 0 0 1 0 0 0 0 0 0 0 0 0 3 4 TEMPERATURE RECORDS HIGHEST(C) 17.0 14.8 20.2 28.0 29.8 36.0 39.0 37.4 30.6 23.8 20.4 14.8 39.0 DAY 4 1 30 24 31 20 30 3 2 1 4 20 DIF. BETWEEN (MAX.-MIN.) (C) 7.9 9.5 9.0 9.7 10.3 11.4 11.1 11.1 9.8 7.9 8.5 8.0 9.5 MEAN DAILY TEMP. (MDT) (C) 4.2 3.8 9.5 15.5 19.5 25.4 28.9 28.9 20.4 14.9 11.3 1.9 15.3 COOLING DEG. DAYS(BASE 21 0C) 0.0 0.0 0.0 2.0 16.8 133.6 243.8 244.1 21.7 0.0 0.0 0.0 662.2 HEATING DEG. DAYS(BASE 18 0C) 428.5 396.8 263.3 93.4 19.3 0.0 0.0 0.0 7.8 100.1 202.0 498.0 2009.2 DEWPOINT (MEAN C) -4.2 -6.8 -3.7 -0.8 0.2 -0.5 4.3 1.0 -4.1 2.9 -1.2 -8.9 -1.8 MIXING RATIO (G/KG) 3.47 2.90 3.74 4.56 4.91 4.71 6.49 5.35 3.66 5.98 4.48 2.58 4.40 VAPOUR PRESSURE (HPA) 4.62 3.84 4.95 6.06 6.50 6.21 8.52 7.05 4.87 7.95 5.95 3.43 5.83 SATURATION DEF. (HPA) 4.29 4.99 8.13 13.94 18.94 30.49 35.95 37.49 21.85 10.39 8.69 4.38 16.63 RELATIVE HUMIDITY (MEAN %) 55 47 42 33 28 18 21 17 19 46 42 45 34 RELATIVE HUMIDITY (MAX. %) 67 61 56 48 41 26 29 23 28 58 56 57 46 RELATIVE HUMIDITY (MIN. %) 45 36 32 23 20 13 15 12 14 37 33 35 26 RELATIVE HUMIDITY (MEAN% 03UTC) 60 57 54 44 37 25 29 23 27 55 51 51 43 RELATIVE HUMIDITY (MEAN% 09UTC) 51 43 37 27 24 16 19 15 16 40 36 38 30 RELATIVE HUMIDITY (MEAN% 15UTC) 61 50 42 34 27 15 17 14 18 49 46 52 35 RH=0 => RELATIVE HUMIDITY < 0.5% AMOUNT OF PRECIPITATION MM. 14.4 39.4 50.5 10.6 11.4 0.0 0.0 0.0 0.0 16.9 18.4 5.6 167.2 DAYS WITH PRECIPITATION >=10 0 1 1 0 0 0 0 0 0 0 1 0 3 DAYS WITH PRECIPITATION >= 5 1 2 3 0 1 0 0 0 0 0 2 0 9 DAYS WITH PRECIPITATION >= 1 3 3 6 3 3 0 0 0 0 6 2 2 28 DAYS WITH PRECIPITATION 3 4 8 8 6 0 0 0 0 9 4 5 47 GREATEST DAILY PRECIPITATION 7.0 29.0 28.3 3.2 5.0 0.0 0.0 0.0 0.0 4.8 10.7 2.0 29.0 DAY 5 1 27 18 16 ** ** ** ** 16 17 3 DAY WITH THUNDER STORM 0 0 1 2 4 0 0 1 0 3 0 0 11 DAYS WITH SNOW OR SLEET 1 2 0 0 0 0 0 0 0 0 0 2 5 DAYS WITH DUST 0 0 0 3 2 0 2 0 0 0 0 0 7 WIND DIRECTION (PREVAILING) 45 45 45 225 360 45 45 45 45 45 225 225 45 PREVAILING WIND SPEED(KNOTS) 5.2 5.5 5.0 12.3 5.9 6.2 7.4 6.6 6.6 5.8 12.1 17.3 5.9 PREVAILING WIND PERCENT 10.3 15.0 11.6 11.3 11.6 16.7 16.1 16.8 12.7 7.1 12.0 6.5 11.5 CALMS PERCENT OF WIND 70.3 55.0 54.2 46.7 45.8 46.0 40.6 50.3 53.3 74.2 62.7 78.1 56.5 NO. OF WIND OBSERVATION 155 140 155 150 155 150 155 155 150 155 150 155 1825 VECTOR WIND DIRECTION (MEAN) 22 360 271 298 274 49 81 88 70 350 210 216 67 VECTOR WIND MAGNITUDE(KNOTS) 0.5 0.6 0.3 1.3 0.7 1.9 2.6 2.4 1.9 0.3 2.1 0.8 0.4 WIND STEADINESES (MEAN %) 27.8 17.6 8.8 27.7 15.9 45.2 57.8 66.7 59.4 18.8 56.8 42.1 11.8 WIND SPEED (MEAN KNOTS) 1.8 3.4 3.4 4.7 4.4 4.2 4.5 3.6 3.2 1.6 3.7 1.9 3.4 FASTEST WIND DIRECTION 30 210 240 240 280 190 160 100 330 210 270 210 240 FASTEST WIND SPEED (KNOTS) 19 31 39 27 27 23 16 16 19 19 29 31 39 DAY 1 1 7 2 4 4 20 19 28 19 23 20 DAYS WITH SKY CLEAR (0-2)/8 14 18 13 13 14 28 29 31 26 10 14 20 230 DAYS WITH P.CLOUDY (3-6)/8 11 8 11 10 12 2 2 0 4 17 9 6 92 DAYS WITH CLOUDY (7-8)/8 6 2 7 7 5 0 0 0 0 4 7 5 43 DAYS WITH VISIBILITY =< 2 KM 1 2 0 0 0 0 0 0 0 0 0 0 3 DURATION OF SUNSHINE HOURS 99.2 212.2 227.5 226.0 274.7 353.5 362.1 355.3 303.4 195.6 186.0 214.1 3009.6 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION NATANZ (99421) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 33 32 N LONGITUDE 51 54 E DATA PROCESSING CENTER ELEVATION 1684.9 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 832.6 829.3 830.4 832.1 831.2 827.0 825.9 827.7 834.7 836.3 832.9 833.0 831.1 MAX. QFE PRESSURE IN HPA 840.7 836.0 836.2 840.6 836.1 832.5 830.1 832.9 842.1 841.7 840.5 838.4 842.1 DAY-HOUR 10- 6 20- 6 18- 6 5- 6 18- 6 9- 6 2- 6 15- 6 23- 6 9- 6 2- 6 22- 6 MIN. QFE PRESSURE IN HPA 824.7 821.0 820.7 823.8 824.4 821.9 822.1 823.1 828.2 831.0 824.2 819.8 819.8 DAY-HOUR 25-12 1- 6 12-12 2-12 1-12 4-15 7-15 2-12 1-15 2-12 26- 3 4-12 MEAN QNH PRESSURE IN HPA 1020.1 1016.3 1017.5 1019.5 1018.5 1013.5 1012.2 1014.3 1022.6 1024.5 1020.5 1020.6 1018.3 MAX. QNH PRESSURE IN HPA 1029.7 1024.1 1024.4 1029.5 1024.2 1020.0 1017.2 1020.5 1031.3 1030.8 1029.4 1026.9 1031.3 DAY-HOUR 10- 6 20- 6 18- 6 5- 6 18- 6 9- 6 2- 6 15- 6 23- 6 9- 6 2- 6 22- 6 MIN. QNH PRESSURE IN HPA 1010.8 1006.4 1006.1 1009.7 1010.4 1007.5 1007.7 1008.9 1014.9 1018.2 1010.2 1005.0 1005.0 DAY-HOUR 25-12 1- 6 12-12 2-12 1-12 4-15 7-15 2-12 1-15 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 832.8 829.5 830.5 832.5 831.7 827.7 826.4 828.1 834.9 836.4 833.1 833.1 831.4 MAX. QFE PRESSURE IN HPA 840.0 835.0 835.2 838.6 835.7 831.6 829.6 831.7 841.2 840.8 839.2 838.0 841.2 DAY 10 19 18 5 18 9 2 15 23 10 2 22 MIN. QFE PRESSURE IN HPA 825.2 821.4 822.1 826.3 826.1 824.0 822.3 824.1 829.3 833.3 824.2 820.5 820.5 DAY 26 1 12 2 1 22 8 2 2 16 26 4 MEAN QNH PRESSURE IN HPA 1020.3 1016.4 1017.7 1020.0 1019.0 1014.4 1012.8 1014.8 1022.8 1024.6 1020.7 1020.6 1018.7 MAX. QNH PRESSURE IN HPA 1028.8 1022.9 1023.2 1027.2 1023.8 1018.9 1016.6 1019.0 1030.3 1029.8 1027.9 1026.5 1030.3 DAY 10 19 18 5 18 9 2 15 23 10 2 22 MIN. QNH PRESSURE IN HPA 1011.4 1006.9 1007.7 1012.7 1012.4 1010.0 1008.0 1010.1 1016.2 1020.9 1010.2 1005.8 1005.8 DAY 26 1 12 2 1 22 8 2 2 16 26 4 MEAN QFF PRESSURE IN HPA 1021.0 1017.4 1014.4 1012.0 1008.3 999.2 995.5 997.7 1011.7 1017.3 1016.2 1023.3 1011.2 MAX. QFF PRESSURE IN HPA 1031.9 1030.6 1021.3 1024.9 1015.0 1004.9 1002.7 1002.3 1021.8 1023.7 1023.5 1035.4 1035.4 DAY 10 19 17 5 18 8 2 22 23 10 10 7 MIN. QFF PRESSURE IN HPA 1012.6 1001.3 1002.8 1003.1 1003.9 993.5 989.4 990.6 1001.5 1010.3 1005.8 1003.1 989.4 DAY 3 1 7 26 13 22 31 1 1 2 26 4 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION NATANZ (99421) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 33 32 N LONGITUDE 51 54 E DATA PROCESSING CENTER ELEVATION 1684.9 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 833.6 830.1 831.4 833.1 832.2 828.2 826.9 828.8 835.8 837.2 834.0 833.9 832.1 MAX. QFE PRESSURE IN HPA 840.7 836.0 836.2 840.6 836.1 832.5 830.1 832.9 842.1 841.7 840.5 838.4 842.1 DAY 10 20 18 5 18 9 2 15 23 9 2 22 MIN. QFE PRESSURE IN HPA 826.2 821.0 823.2 826.3 826.8 824.3 823.7 824.8 830.6 833.6 825.7 821.3 821.0 DAY 26 1 7 2 1 29 8 2 2 2 26 4 MEAN QNH PRESSURE IN HPA 1021.3 1017.2 1018.7 1020.7 1019.6 1014.9 1013.4 1015.7 1023.9 1025.6 1021.7 1021.6 1019.5 MAX. QNH PRESSURE IN HPA 1029.7 1024.1 1024.4 1029.5 1024.2 1020.0 1017.2 1020.5 1031.3 1030.8 1029.4 1026.9 1031.3 DAY 10 20 18 5 18 9 2 15 23 9 2 22 MIN. QNH PRESSURE IN HPA 1012.6 1006.4 1009.0 1012.7 1013.3 1010.3 1009.6 1010.9 1017.8 1021.3 1012.0 1006.8 1006.4 DAY 26 1 7 2 1 29 8 2 2 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 832.4 829.4 830.6 832.3 831.5 827.4 826.3 828.1 835.1 836.3 832.8 832.9 831.3 MAX. QFE PRESSURE IN HPA 838.9 835.7 835.8 840.4 835.4 832.2 829.6 831.9 841.7 840.7 839.6 837.3 841.7 DAY 9 20 18 5 18 8 13 15 23 9 2 7 MIN. QFE PRESSURE IN HPA 825.5 822.2 821.4 824.9 826.0 823.3 823.7 824.3 829.6 832.0 825.7 820.3 820.3 DAY 26 12 7 2 1 29 30 2 1 2 26 4 MEAN QNH PRESSURE IN HPA 1019.9 1016.3 1017.8 1019.8 1018.9 1013.9 1012.7 1014.8 1023.0 1024.5 1020.3 1020.4 1018.5 MAX. QNH PRESSURE IN HPA 1027.5 1023.8 1023.9 1029.3 1023.4 1019.6 1016.6 1019.3 1030.8 1029.7 1028.4 1025.7 1030.8 DAY 9 20 18 5 18 8 13 15 23 9 2 7 MIN. QNH PRESSURE IN HPA 1011.7 1007.8 1006.9 1011.0 1012.3 1009.1 1009.6 1010.3 1016.6 1019.4 1012.0 1005.6 1005.6 DAY 26 12 7 2 1 29 30 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 831.8 828.5 829.5 831.3 830.4 826.0 825.0 826.8 833.9 835.6 832.2 832.4 830.3 MAX. QFE PRESSURE IN HPA 838.8 834.5 834.5 839.4 833.9 830.9 828.7 830.4 840.4 840.0 838.6 837.3 840.4 DAY 9 20 18 5 18 8 13 15 23 10 2 7 MIN. QFE PRESSURE IN HPA 824.7 822.1 820.7 823.8 824.4 822.3 822.4 823.1 828.3 831.0 826.5 819.8 819.8 DAY 25 12 12 2 1 4 20 2 2 2 26 4 MEAN QNH PRESSURE IN HPA 1019.2 1015.3 1016.5 1018.6 1017.6 1012.3 1011.1 1013.2 1021.7 1023.6 1019.7 1019.9 1017.4 MAX. QNH PRESSURE IN HPA 1027.4 1022.4 1022.4 1028.1 1021.6 1018.1 1015.5 1017.5 1029.3 1028.8 1027.2 1025.7 1029.3 DAY 9 20 18 5 18 8 13 15 23 10 2 7 MIN. QNH PRESSURE IN HPA 1010.8 1007.7 1006.1 1009.7 1010.4 1008.0 1008.1 1008.9 1015.0 1018.2 1012.9 1005.0 1005.0 DAY 25 12 12 2 1 4 20 2 2 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 NATANZ (99421) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 33 32 N LONGITUDE 51 54 E DATA PROCESSING CENTER ELEVATION 1684.9 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 832.4 829.3 829.9 831.5 830.5 825.8 824.8 826.7 834.0 835.9 832.6 833.0 830.5 MAX. QFE PRESSURE IN HPA 839.7 835.0 834.6 839.2 833.7 830.5 828.6 830.1 840.5 840.0 839.0 838.2 840.5 DAY 9 18 18 5 18 8 13 15 23 9 2 7 MIN. QFE PRESSURE IN HPA 824.9 824.1 821.0 824.0 824.8 821.9 822.1 823.2 828.2 831.5 825.3 820.4 820.4 DAY 25 12 7 2 1 4 7 2 1 2 25 4 MEAN QNH PRESSURE IN HPA 1019.9 1016.2 1016.9 1018.8 1017.6 1012.1 1010.9 1013.2 1021.8 1024.0 1020.1 1020.6 1017.7 MAX. QNH PRESSURE IN HPA 1028.5 1022.9 1022.5 1027.9 1021.4 1017.6 1015.4 1017.2 1029.4 1028.8 1027.7 1026.7 1029.4 DAY 9 18 18 5 18 8 13 15 23 9 2 7 MIN. QNH PRESSURE IN HPA 1011.0 1010.1 1006.4 1010.0 1010.9 1007.5 1007.7 1009.0 1014.9 1018.8 1011.5 1005.7 1005.7 DAY 25 12 7 2 1 4 7 2 1 2 25 4 MEAN QFF PRESSURE IN HPA 1020.5 1017.0 1013.4 1010.7 1006.8 997.0 993.5 996.1 1010.8 1016.7 1015.5 1023.2 1010.1 MAX. QFF PRESSURE IN HPA 1031.5 1029.2 1020.4 1026.5 1013.0 1003.3 1000.5 1001.2 1020.7 1023.1 1022.8 1036.7 1036.7 DAY 9 19 17 5 7 8 2 22 23 9 10 7 MIN. QFF PRESSURE IN HPA 1011.9 1008.7 999.4 1001.8 1001.5 991.7 988.6 990.2 1000.7 1008.7 1006.0 1002.4 988.6 DAY 4 1 7 26 13 25 31 2 1 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 NATANZ (99421) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 33 32 N LONGITUDE 51 54 E DATA PROCESSING CENTER ELEVATION 1684.9 M MEANS AND EXTREMES FOR THE YEAR 1995 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AIR TEMPERATURE (C) 5.9 6.1 10.5 15.4 20.1 25.4 31.2 31.2 24.3 16.9 12.1 2.4 16.8 MINIMUN AIR TEMPERATURE (C) 0.4 0.9 4.2 9.8 13.9 18.4 24.6 23.9 17.7 10.6 6.0 -1.5 10.7 DAYS WITH MINIMUM TEMP. >=21 0 0 0 0 0 9 31 29 6 0 0 0 75 DAYS WITH MINIMUM TEMP. <=-4 3 0 0 0 0 0 0 0 0 0 1 5 9 DAYS WITH FREEZING MIN.<= 0 15 11 3 0 0 0 0 0 0 0 5 25 59 TEMPERATURE RECORDS LOWEST(C) -4.0 -3.0 -1.0 4.4 7.6 10.0 21.0 20.0 9.0 5.2 -4.2 -6.0 -6.0 DAY 21 26 6 7 9 1 1 10 22 18 29 21 MAXIMUM AIR TEMPERATURE (C) 9.2 9.4 14.2 18.7 23.6 29.1 34.9 34.8 28.2 20.5 16.0 5.0 20.3 DAYS WITH MAXIMUM TEMP. >=30 0 0 0 0 0 15 31 31 12 0 0 0 89 DAYS WITH MAXIMUM TEMP. <= 0 0 0 0 0 0 0 0 0 0 0 0 1 1 TEMPERATURE RECORDS HIGHEST(C) 14.0 13.0 22.6 24.0 29.6 35.2 38.6 37.0 31.8 28.8 22.2 10.0 38.6 DAY 17 4 25 3 7 21 16 5 12 4 10 29 DIF. BETWEEN (MAX.-MIN.) (C) 8.8 8.5 10.0 8.9 9.7 10.7 10.3 10.9 10.5 9.9 10.0 6.5 9.6 MEAN DAILY TEMP. (MDT) (C) 4.8 5.1 9.2 14.3 18.8 23.8 29.8 29.4 22.9 15.5 11.0 1.8 15.5 COOLING DEG. DAYS(BASE 21 0C) 0.0 0.0 0.0 0.0 9.5 95.6 272.1 259.3 78.6 2.7 0.0 0.0 717.8 HEATING DEG. DAYS(BASE 18 0C) 410.5 359.9 272.3 114.7 29.8 2.2 0.0 0.0 3.1 97.0 210.1 503.5 2003.2 DEWPOINT (MEAN C) -6.0 -5.1 -6.7 0.8 3.4 4.5 6.4 -0.7 2.0 -1.7 -6.1 -4.5 -1.1 MIXING RATIO (G/KG) 3.07 3.29 3.12 5.26 6.15 6.58 7.59 4.56 5.44 4.18 3.08 3.37 4.64 VAPOUR PRESSURE (HPA) 4.09 4.37 4.14 6.95 8.14 8.67 9.95 6.03 7.21 5.57 4.10 4.50 6.14 SATURATION DEF. (HPA) 5.40 5.27 8.97 10.99 16.07 24.51 36.30 39.97 24.10 14.56 10.81 2.96 16.66 RELATIVE HUMIDITY (MEAN %) 45 48 34 42 38 29 23 14 25 30 29 64 35 RELATIVE HUMIDITY (MAX. %) 58 63 49 57 49 40 29 19 32 40 38 74 46 RELATIVE HUMIDITY (MIN. %) 33 36 25 33 31 22 18 10 20 24 24 56 28 RELATIVE HUMIDITY (MEAN% 03UTC) 52 57 46 53 48 39 29 18 31 39 35 66 43 RELATIVE HUMIDITY (MEAN% 09UTC) 38 43 30 36 34 26 21 13 24 25 27 61 32 RELATIVE HUMIDITY (MEAN% 15UTC) 50 50 34 44 36 25 19 13 24 31 31 71 36 RH=0 => RELATIVE HUMIDITY < 0.5% AMOUNT OF PRECIPITATION MM. 2.0 22.3 32.0 49.7 59.0 7.3 0.0 0.0 0.3 0.0 0.0 19.8 192.4 DAYS WITH PRECIPITATION >=10 0 0 1 1 2 0 0 0 0 0 0 0 4 DAYS WITH PRECIPITATION >= 5 0 3 1 4 4 1 0 0 0 0 0 2 15 DAYS WITH PRECIPITATION >= 1 1 4 3 7 5 1 0 0 0 0 0 6 27 DAYS WITH PRECIPITATION 1 9 3 10 5 3 0 0 1 0 0 11 43 GREATEST DAILY PRECIPITATION 2.0 8.0 27.0 15.0 25.0 6.0 0.0 0.0 0.3 0.0 0.0 5.4 27.0 DAY 1 24 21 13 29 6 ** ** 22 ** ** 12 DAY WITH THUNDER STORM 0 1 0 2 1 1 0 0 0 0 0 0 5 DAYS WITH SNOW OR SLEET 0 1 0 0 0 0 0 0 0 0 0 5 6 DAYS WITH DUST 0 0 1 0 0 0 0 0 1 0 0 0 2 WIND DIRECTION (PREVAILING) 45 45 45 225 45 360 45 45 45 45 225 45 45 PREVAILING WIND SPEED(KNOTS) 4.6 5.2 6.3 9.8 5.5 6.8 6.3 8.0 6.0 5.4 11.6 4.8 6.2 PREVAILING WIND PERCENT 6.5 9.3 14.2 6.0 11.0 14.7 14.8 16.8 7.3 9.0 10.0 5.2 9.4 CALMS PERCENT OF WIND 79.4 62.1 53.5 63.3 58.7 59.3 62.6 52.3 70.7 67.7 70.7 87.1 65.6 NO. OF WIND OBSERVATION 155 140 155 150 155 150 155 155 150 155 150 155 1825 VECTOR WIND DIRECTION (MEAN) 39 230 334 255 340 359 44 84 78 150 231 8 48 VECTOR WIND MAGNITUDE(KNOTS) 0.6 0.4 0.3 0.3 0.1 1.2 1.5 2.3 0.2 0.4 1.2 0.3 0.3 WIND STEADINESES (MEAN %) 60.0 14.8 8.1 10.3 3.2 38.7 60.0 60.5 8.7 16.7 44.4 42.9 11.5 WIND SPEED (MEAN KNOTS) 1.0 2.7 3.7 2.9 3.1 3.1 2.5 3.8 2.3 2.4 2.7 0.7 2.6 FASTEST WIND DIRECTION 30 210 220 270 210 270 40 110 240 200 240 320 220 FASTEST WIND SPEED (KNOTS) 14 29 33 19 27 19 14 16 31 23 23 14 33 DAY 3 5 17 3 2 4 14 4 20 12 11 4 DAYS WITH SKY CLEAR (0-2)/8 21 13 18 5 14 23 30 31 25 27 22 12 241 DAYS WITH P.CLOUDY (3-6)/8 8 11 7 13 10 7 1 0 5 4 7 7 80 DAYS WITH CLOUDY (7-8)/8 2 4 6 12 7 0 0 0 0 0 1 12 44 DAYS WITH VISIBILITY =< 2 KM 0 1 0 0 1 0 0 0 0 0 0 4 6 DURATION OF SUNSHINE HOURS 235.2 ****** 158.7 ****** ****** 192.8 376.8 357.9 305.0 296.4 250.2 146.5 ****** ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION NATANZ (99421) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 33 32 N LONGITUDE 51 54 E DATA PROCESSING CENTER ELEVATION 1684.9 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 833.5 830.9 830.7 830.3 832.5 828.7 825.7 829.0 831.4 834.6 833.7 833.9 831.2 MAX. QFE PRESSURE IN HPA 841.2 836.1 838.8 834.8 837.2 834.3 830.2 833.7 837.6 842.2 840.0 838.2 842.2 DAY-HOUR 7- 6 1- 6 3- 6 13- 6 26- 6 1- 6 4- 6 25- 6 13- 6 25- 6 16- 3 10- 6 MIN. QFE PRESSURE IN HPA 827.5 821.4 821.3 825.4 827.8 821.6 820.9 824.2 824.6 827.4 824.7 829.3 820.9 DAY-HOUR 11-12 5- 3 17-12 24-15 10-12 22-12 16-15 22-15 20-12 12-12 25-12 4- 3 MEAN QNH PRESSURE IN HPA 1021.2 1018.1 1017.9 1017.3 1020.0 1015.5 1011.9 1015.9 1018.7 1022.5 1021.4 1021.7 1018.5 MAX. QNH PRESSURE IN HPA 1030.3 1024.2 1027.4 1022.7 1025.5 1022.1 1017.3 1021.4 1026.0 1031.4 1028.8 1026.7 1031.4 DAY-HOUR 7- 6 1- 6 3- 6 13- 6 26- 6 1- 6 4- 6 25- 6 13- 6 25- 6 16- 3 10- 6 MIN. QNH PRESSURE IN HPA 1014.1 1006.9 1006.8 1011.6 1014.4 1007.1 1006.3 1010.2 1010.7 1014.0 1010.8 1016.2 1006.3 DAY-HOUR 11-12 5- 3 17-12 24-15 10-12 22-12 16-15 22-15 20-12 12-12 25-12 4- 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 833.6 831.1 830.8 830.5 832.9 829.3 826.0 829.2 831.8 834.9 833.9 834.0 831.5 MAX. QFE PRESSURE IN HPA 839.7 835.3 837.6 833.8 836.5 833.7 829.7 832.8 836.6 841.6 840.0 837.2 841.6 DAY 7 14 3 13 26 1 4 25 13 27 16 10 MIN. QFE PRESSURE IN HPA 828.8 821.4 824.5 826.4 829.8 824.4 822.5 826.1 828.3 830.4 827.3 829.3 821.4 DAY 12 5 26 25 11 22 17 22 19 12 26 4 MEAN QNH PRESSURE IN HPA 1021.3 1018.3 1018.0 1017.7 1020.5 1016.3 1012.3 1016.1 1019.2 1022.9 1021.7 1021.8 1018.8 MAX. QNH PRESSURE IN HPA 1028.5 1023.3 1026.0 1021.5 1024.7 1021.4 1016.7 1020.3 1024.8 1030.7 1028.8 1025.5 1030.7 DAY 7 14 3 13 26 1 4 25 13 27 16 10 MIN. QNH PRESSURE IN HPA 1015.6 1006.9 1010.6 1012.8 1016.8 1010.4 1008.2 1012.4 1015.0 1017.5 1013.9 1016.2 1006.9 DAY 12 5 26 25 11 22 17 22 19 12 26 4 MEAN QFF PRESSURE IN HPA 1021.9 1018.0 1014.8 1010.5 1009.7 1002.3 994.4 998.9 1006.3 1015.6 1017.8 1024.3 1011.2 MAX. QFF PRESSURE IN HPA 1030.1 1023.3 1025.1 1016.9 1015.7 1013.3 999.9 1004.4 1016.9 1026.9 1027.7 1029.4 1030.1 DAY 7 14 3 7 29 1 4 25 22 27 28 20 MIN. QFF PRESSURE IN HPA 1011.5 1001.7 1001.9 1004.2 1003.8 992.5 988.2 994.0 1001.1 1005.6 1009.1 1016.3 988.2 DAY 17 5 26 30 7 22 17 22 20 12 11 4 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION NATANZ (99421) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 33 32 N LONGITUDE 51 54 E DATA PROCESSING CENTER ELEVATION 1684.9 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 834.5 831.8 831.8 831.2 833.5 829.7 826.7 830.1 832.5 835.7 834.6 834.8 832.3 MAX. QFE PRESSURE IN HPA 841.2 836.1 838.8 834.8 837.2 834.3 830.2 833.7 837.6 842.2 840.0 838.2 842.2 DAY 7 1 3 13 26 1 4 25 13 25 16 10 MIN. QFE PRESSURE IN HPA 829.8 823.3 824.7 826.9 830.3 824.3 823.3 827.2 828.8 830.6 828.6 830.2 823.3 DAY 11 5 26 24 15 22 16 22 20 12 26 4 MEAN QNH PRESSURE IN HPA 1022.3 1019.2 1019.1 1018.4 1021.2 1016.7 1013.1 1017.2 1020.0 1023.8 1022.5 1022.7 1019.7 MAX. QNH PRESSURE IN HPA 1030.3 1024.2 1027.4 1022.7 1025.5 1022.1 1017.3 1021.4 1026.0 1031.4 1028.8 1026.7 1031.4 DAY 7 1 3 13 26 1 4 25 13 25 16 10 MIN. QNH PRESSURE IN HPA 1016.8 1009.1 1010.8 1013.4 1017.4 1010.3 1009.1 1013.7 1015.6 1017.8 1015.4 1017.3 1009.1 DAY 11 5 26 24 15 22 16 22 20 12 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 833.4 831.0 831.0 830.5 832.8 829.0 826.1 829.5 831.7 834.7 833.5 833.8 831.4 MAX. QFE PRESSURE IN HPA 840.2 835.5 838.3 834.6 837.1 833.8 829.4 833.1 836.9 841.4 838.8 837.5 841.4 DAY 7 12 3 12 26 1 4 25 13 25 15 10 MIN. QFE PRESSURE IN HPA 828.2 824.2 824.0 826.7 829.4 823.5 822.6 826.4 826.9 829.3 827.1 829.4 822.6 DAY 11 5 26 24 7 22 16 22 20 12 25 4 MEAN QNH PRESSURE IN HPA 1021.1 1018.3 1018.3 1017.6 1020.3 1015.9 1012.5 1016.5 1019.0 1022.6 1021.1 1021.5 1018.7 MAX. QNH PRESSURE IN HPA 1029.1 1023.5 1026.8 1022.5 1025.4 1021.5 1016.3 1020.7 1025.2 1030.5 1027.4 1025.9 1030.5 DAY 7 12 3 12 26 1 4 25 13 25 15 10 MIN. QNH PRESSURE IN HPA 1014.9 1010.2 1010.0 1013.2 1016.3 1009.4 1008.3 1012.8 1013.4 1016.2 1013.6 1016.3 1008.3 DAY 11 5 26 24 7 22 16 22 20 12 25 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 832.8 830.1 829.8 829.5 831.7 827.7 824.9 828.2 830.4 833.8 832.9 833.2 830.4 MAX. QFE PRESSURE IN HPA 839.4 835.1 836.9 833.7 835.6 832.8 828.5 831.2 835.5 841.0 838.6 837.0 841.0 DAY 7 1 3 12 26 1 31 24 13 25 15 10 MIN. QFE PRESSURE IN HPA 827.5 822.9 821.3 825.5 827.8 821.6 821.1 824.7 824.6 827.4 824.7 829.3 821.1 DAY 11 23 17 17 10 22 16 22 20 12 25 4 MEAN QNH PRESSURE IN HPA 1020.3 1017.2 1016.8 1016.4 1019.1 1014.4 1011.0 1014.9 1017.5 1021.5 1020.4 1020.8 1017.5 MAX. QNH PRESSURE IN HPA 1028.1 1023.1 1025.2 1021.4 1023.7 1020.3 1015.3 1018.5 1023.5 1030.0 1027.2 1025.3 1030.0 DAY 7 1 3 12 26 1 31 24 13 25 15 10 MIN. QNH PRESSURE IN HPA 1014.1 1008.7 1006.8 1011.7 1014.4 1007.1 1006.6 1010.8 1010.7 1014.0 1010.8 1016.2 1006.6 DAY 11 23 17 17 10 22 16 22 20 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 NATANZ (99421) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 33 32 N LONGITUDE 51 54 E DATA PROCESSING CENTER ELEVATION 1684.9 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 833.4 830.6 830.2 829.6 831.7 827.5 824.7 828.1 830.6 834.2 833.5 833.9 830.7 MAX. QFE PRESSURE IN HPA 839.7 835.9 836.6 833.9 836.1 832.8 828.7 831.2 835.2 841.2 839.4 837.6 841.2 DAY 7 1 3 12 26 1 31 24 13 25 15 10 MIN. QFE PRESSURE IN HPA 828.7 824.7 822.4 825.4 828.2 822.3 820.9 824.2 827.3 828.5 824.9 830.4 820.9 DAY 11 5 26 24 10 22 16 22 19 12 25 4 MEAN QNH PRESSURE IN HPA 1021.0 1017.8 1017.3 1016.6 1019.1 1014.1 1010.8 1014.8 1017.7 1022.0 1021.2 1021.7 1017.8 MAX. QNH PRESSURE IN HPA 1028.5 1024.0 1024.8 1021.6 1024.2 1020.3 1015.5 1018.5 1023.2 1030.3 1028.1 1026.0 1030.3 DAY 7 1 3 12 26 1 31 24 13 25 15 10 MIN. QNH PRESSURE IN HPA 1015.5 1010.8 1008.1 1011.6 1014.9 1008.0 1006.3 1010.2 1013.9 1015.3 1011.0 1017.5 1006.3 DAY 11 5 26 24 10 22 16 22 19 12 25 4 MEAN QFF PRESSURE IN HPA 1021.5 1017.5 1013.9 1009.2 1008.4 1000.0 992.8 997.6 1004.8 1014.6 1017.4 1024.1 1010.2 MAX. QFF PRESSURE IN HPA 1030.5 1023.0 1023.6 1015.4 1015.8 1010.5 997.7 1002.3 1012.7 1025.9 1027.3 1028.8 1030.5 DAY 7 12 3 12 29 1 31 24 22 25 27 10 MIN. QFF PRESSURE IN HPA 1013.1 1006.5 1000.9 1004.3 1002.8 990.9 986.2 992.1 1000.1 1003.7 1006.1 1019.7 986.2 DAY 17 5 26 16 6 22 16 22 5 12 11 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 NATANZ (99421) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 33 32 N LONGITUDE 51 54 E DATA PROCESSING CENTER ELEVATION 1684.9 M MEANS AND EXTREMES FOR THE YEAR 1996 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AIR TEMPERATURE (C) -0.1 5.2 6.4 14.7 21.4 27.0 27.9 28.7 26.2 17.3 8.8 7.1 15.9 MINIMUN AIR TEMPERATURE (C) -4.5 0.8 2.1 8.5 15.0 19.8 21.5 22.1 19.9 10.9 3.9 1.9 10.2 DAYS WITH MINIMUM TEMP. >=21 0 0 0 0 1 11 20 24 12 0 0 0 68 DAYS WITH MINIMUM TEMP. <=-4 17 2 0 0 0 0 0 0 0 0 0 0 19 DAYS WITH FREEZING MIN.<= 0 23 13 6 1 0 0 0 0 0 0 4 8 55 TEMPERATURE RECORDS LOWEST(C) -13.4 -5.6 -2.0 -0.4 10.4 15.6 16.6 18.2 15.0 5.4 -2.0 -3.6 -13.4 DAY 16 6 1 5 13 28 15 4 24 17 13 3 MAXIMUM AIR TEMPERATURE (C) 3.1 8.6 9.6 18.8 24.8 30.6 31.3 32.1 29.7 20.9 11.8 10.6 19.3 DAYS WITH MAXIMUM TEMP. >=30 0 0 0 0 4 17 22 27 18 0 0 0 88 DAYS WITH MAXIMUM TEMP. <= 0 9 0 0 0 0 0 0 0 0 0 0 0 9 TEMPERATURE RECORDS HIGHEST(C) 12.6 19.6 20.4 25.0 32.2 36.2 34.8 35.6 33.4 25.8 19.2 17.8 36.2 DAY 5 10 31 22 31 4 2 22 5 13 8 28 DIF. BETWEEN (MAX.-MIN.) (C) 7.6 7.8 7.5 10.3 9.8 10.8 9.8 10.0 9.8 10.0 7.9 8.7 9.1 MEAN DAILY TEMP. (MDT) (C) -0.7 4.7 5.8 13.7 19.9 25.2 26.4 27.1 24.8 15.9 7.8 6.3 14.7 COOLING DEG. DAYS(BASE 21 0C) 0.0 0.0 0.0 0.0 33.3 125.7 166.6 189.7 116.8 0.0 0.0 0.0 632.1 HEATING DEG. DAYS(BASE 18 0C) 579.8 384.6 377.5 133.2 20.1 0.0 0.0 0.0 0.0 73.2 304.5 363.9 2236.8 DEWPOINT (MEAN C) -6.6 -0.9 -0.5 3.4 8.4 5.5 4.7 3.6 2.9 0.3 -4.1 -5.7 0.9 MIXING RATIO (G/KG) 2.97 4.43 4.59 6.11 8.46 7.12 6.58 6.15 5.80 4.85 3.50 3.14 5.31 VAPOUR PRESSURE (HPA) 3.95 5.87 6.06 8.08 11.15 9.37 8.69 8.12 7.68 6.45 4.68 4.19 7.02 SATURATION DEF. (HPA) 2.54 3.39 3.94 9.45 15.23 27.09 29.41 31.94 27.03 13.84 7.08 6.20 14.76 RELATIVE HUMIDITY (MEAN %) 64 69 66 49 46 28 24 22 23 34 42 42 42 RELATIVE HUMIDITY (MAX. %) 75 81 81 62 58 36 33 30 28 42 54 51 53 RELATIVE HUMIDITY (MIN. %) 54 59 55 39 38 22 18 17 20 28 33 34 35 RELATIVE HUMIDITY (MEAN% 03UTC) 69 72 73 59 55 35 33 29 27 41 52 49 50 RELATIVE HUMIDITY (MEAN% 09UTC) 59 67 61 43 42 26 21 19 21 31 35 36 38 RELATIVE HUMIDITY (MEAN% 15UTC) 70 72 70 52 46 26 20 19 24 34 44 46 44 RH=0 => RELATIVE HUMIDITY < 0.5% AMOUNT OF PRECIPITATION MM. 40.0 60.3 121.5 14.0 21.9 4.4 0.0 0.0 0.0 0.1 0.7 8.0 270.9 DAYS WITH PRECIPITATION >=10 2 2 6 0 0 0 0 0 0 0 0 0 10 DAYS WITH PRECIPITATION >= 5 3 4 8 0 1 0 0 0 0 0 0 1 17 DAYS WITH PRECIPITATION >= 1 6 8 12 5 6 1 0 0 0 0 0 2 40 DAYS WITH PRECIPITATION 6 12 16 8 13 2 0 0 0 3 1 2 63 GREATEST DAILY PRECIPITATION 15.0 21.0 35.0 3.1 8.0 4.0 0.0 0.0 0.0 0.1 0.7 5.0 35.0 DAY 13 5 4 4 22 28 ** ** ** 15 22 15 DAY WITH THUNDER STORM 0 1 1 0 5 1 0 0 0 0 0 0 8 DAYS WITH SNOW OR SLEET 2 6 3 0 0 0 0 0 0 0 0 0 11 DAYS WITH DUST 0 0 0 0 0 1 0 0 2 0 0 0 3 WIND DIRECTION (PREVAILING) 45 225 225 225 45 135 90 90 45 270 90 90 90 PREVAILING WIND SPEED(KNOTS) 5.2 9.6 11.3 13.6 5.2 8.0 7.0 6.7 5.4 8.8 4.8 3.9 6.0 PREVAILING WIND PERCENT 6.5 6.9 7.7 10.7 9.7 10.7 20.6 19.4 16.7 8.4 5.3 14.2 8.2 CALMS PERCENT OF WIND 82.6 70.3 68.4 55.3 72.3 57.3 45.2 36.1 60.0 59.4 78.7 71.6 63.1 NO. OF WIND OBSERVATION 155 145 155 150 155 150 155 155 150 155 150 155 1830 VECTOR WIND DIRECTION (MEAN) 148 224 253 246 24 112 109 98 66 246 44 131 112 VECTOR WIND MAGNITUDE(KNOTS) 0.5 0.7 0.8 0.9 0.7 1.0 2.2 2.1 1.3 0.7 0.5 0.4 0.4 WIND STEADINESES (MEAN %) 33.3 29.2 30.8 23.1 38.9 31.3 56.4 53.8 56.5 25.9 50.0 26.7 15.4 WIND SPEED (MEAN KNOTS) 1.5 2.4 2.6 3.9 1.8 3.2 3.9 3.9 2.3 2.7 1.0 1.5 2.6 FASTEST WIND DIRECTION 210 180 240 240 300 240 160 240 160 270 10 240 210 FASTEST WIND SPEED (KNOTS) 31 23 23 29 16 16 19 14 14 19 12 16 31 DAY 6 10 2 13 4 5 10 7 1 13 3 14 DAYS WITH SKY CLEAR (0-2)/8 9 8 8 12 10 25 25 25 29 27 19 13 210 DAYS WITH P.CLOUDY (3-6)/8 13 11 10 9 15 5 6 6 1 4 5 14 99 DAYS WITH CLOUDY (7-8)/8 8 10 13 9 6 0 0 0 0 0 6 4 56 DAYS WITH VISIBILITY =< 2 KM 5 7 8 0 0 0 0 0 1 0 0 0 21 DURATION OF SUNSHINE HOURS 178.1 148.4 154.9 247.7 262.4 360.0 360.2 346.8 304.5 286.4 196.5 222.8 3068.7 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION NATANZ (99421) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 33 32 N LONGITUDE 51 54 E DATA PROCESSING CENTER ELEVATION 1684.9 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 832.7 829.9 828.4 831.0 831.9 829.1 830.3 830.2 830.5 834.3 836.5 834.8 831.6 MAX. QFE PRESSURE IN HPA 839.2 835.7 833.5 835.5 836.2 833.3 835.8 837.5 838.2 842.5 845.4 840.2 845.4 DAY-HOUR 26- 6 13- 6 29- 6 4- 6 17- 6 27- 6 4- 6 29- 6 25- 6 2- 6 18- 6 2- 6 MIN. QFE PRESSURE IN HPA 824.4 819.4 822.8 823.5 826.1 823.4 823.3 824.3 824.5 826.4 830.8 829.4 819.4 DAY-HOUR 6-12 5- 3 13-12 10-12 29-12 19-12 7-15 8-15 20-12 27-12 29-12 25- 3 MEAN QNH PRESSURE IN HPA 1020.2 1017.0 1015.2 1018.2 1019.2 1015.9 1017.4 1017.3 1017.7 1022.2 1024.7 1022.7 1019.0 MAX. QNH PRESSURE IN HPA 1027.9 1023.8 1021.2 1023.5 1024.4 1020.9 1023.9 1025.9 1026.7 1031.8 1035.2 1029.1 1035.2 DAY-HOUR 26- 6 13- 6 29- 6 4- 6 17- 6 27- 6 4- 6 29- 6 25- 6 2- 6 18- 6 2- 6 MIN. QNH PRESSURE IN HPA 1010.4 1004.5 1008.6 1009.4 1012.4 1009.3 1009.1 1010.3 1010.6 1012.8 1018.0 1016.3 1004.5 DAY-HOUR 6-12 5- 3 13-12 10-12 29-12 19-12 7-15 8-15 20-12 27-12 29-12 25- 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 832.6 829.8 828.5 831.2 832.3 829.7 830.8 830.6 830.9 834.6 836.6 834.8 831.9 MAX. QFE PRESSURE IN HPA 838.4 835.2 833.2 834.8 835.1 832.6 835.6 836.9 837.2 841.8 843.7 839.8 843.7 DAY 26 24 29 8 17 27 4 30 25 2 19 8 MIN. QFE PRESSURE IN HPA 826.7 819.4 822.9 825.2 829.3 824.4 824.6 825.6 825.8 828.3 831.3 829.4 819.4 DAY 19 5 13 10 29 19 7 8 20 27 29 25 MEAN QNH PRESSURE IN HPA 1020.1 1016.8 1015.3 1018.5 1019.8 1016.7 1018.0 1017.7 1018.1 1022.5 1024.8 1022.7 1019.3 MAX. QNH PRESSURE IN HPA 1026.9 1023.2 1020.8 1022.7 1023.1 1020.1 1023.7 1025.2 1025.5 1031.0 1033.2 1028.6 1033.2 DAY 26 24 29 8 17 27 4 30 25 2 19 8 MIN. QNH PRESSURE IN HPA 1013.2 1004.5 1008.7 1011.4 1016.2 1010.4 1010.7 1011.9 1012.1 1015.0 1018.6 1016.3 1004.5 DAY 19 5 13 10 29 19 7 8 20 27 29 25 MEAN QFF PRESSURE IN HPA 1024.8 1016.8 1014.5 1011.9 1008.3 1001.6 1002.5 1001.8 1004.2 1014.6 1022.8 1022.3 1012.2 MAX. QFF PRESSURE IN HPA 1032.6 1026.0 1020.6 1024.1 1014.0 1009.0 1006.6 1012.1 1014.5 1023.7 1035.1 1031.7 1035.1 DAY 26 24 29 5 8 28 4 30 25 19 19 4 MIN. QFF PRESSURE IN HPA 1013.5 1004.9 1005.9 1000.3 1001.8 994.5 994.3 995.5 998.5 1005.3 1015.5 1015.2 994.3 DAY 6 11 26 13 29 19 7 8 20 27 3 15 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION NATANZ (99421) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 33 32 N LONGITUDE 51 54 E DATA PROCESSING CENTER ELEVATION 1684.9 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 833.6 830.7 829.1 831.9 832.7 830.1 831.3 831.3 831.7 835.4 837.5 835.8 832.6 MAX. QFE PRESSURE IN HPA 839.2 835.7 833.5 835.5 836.2 833.3 835.8 837.5 838.2 842.5 845.4 840.2 845.4 DAY 26 13 29 4 17 27 4 29 25 2 18 2 MIN. QFE PRESSURE IN HPA 827.5 820.0 823.8 825.3 829.0 824.3 824.8 826.0 826.3 828.1 832.0 830.9 820.0 DAY 19 5 13 10 29 19 7 8 22 27 29 25 MEAN QNH PRESSURE IN HPA 1021.3 1017.9 1016.0 1019.3 1020.3 1017.2 1018.5 1018.5 1019.1 1023.4 1025.9 1023.9 1020.1 MAX. QNH PRESSURE IN HPA 1027.9 1023.8 1021.2 1023.5 1024.4 1020.9 1023.9 1025.9 1026.7 1031.8 1035.2 1029.1 1035.2 DAY 26 13 29 4 17 27 4 29 25 2 18 2 MIN. QNH PRESSURE IN HPA 1014.1 1005.3 1009.7 1011.5 1015.9 1010.3 1010.9 1012.3 1012.7 1014.8 1019.4 1018.1 1005.3 DAY 19 5 13 10 29 19 7 8 22 27 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 832.6 830.0 828.6 831.2 832.2 829.5 830.7 830.6 830.9 834.4 836.4 834.8 831.8 MAX. QFE PRESSURE IN HPA 838.3 835.0 832.7 835.1 835.5 832.3 835.3 836.8 837.4 841.4 844.3 839.5 844.3 DAY 26 8 29 4 17 3 3 29 25 2 18 4 MIN. QFE PRESSURE IN HPA 825.9 819.6 823.8 824.6 827.1 824.2 824.6 825.6 825.6 827.0 831.0 830.0 819.6 DAY 6 5 13 10 29 19 7 8 20 27 29 25 MEAN QNH PRESSURE IN HPA 1020.1 1017.0 1015.4 1018.5 1019.6 1016.4 1017.9 1017.8 1018.1 1022.2 1024.6 1022.7 1019.2 MAX. QNH PRESSURE IN HPA 1026.8 1022.9 1020.2 1023.1 1023.5 1019.8 1023.3 1025.1 1025.8 1030.5 1033.9 1028.2 1033.9 DAY 26 8 29 4 17 3 3 29 25 2 18 4 MIN. QNH PRESSURE IN HPA 1012.2 1004.8 1009.7 1010.7 1013.6 1010.2 1010.7 1011.9 1011.9 1013.5 1018.2 1017.0 1004.8 DAY 6 5 13 10 29 19 7 8 20 27 29 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 832.0 829.3 827.7 830.2 831.0 828.1 829.4 829.4 829.6 833.5 835.7 834.1 830.8 MAX. QFE PRESSURE IN HPA 837.6 834.8 831.2 834.1 834.3 831.0 834.2 834.9 836.3 839.9 843.3 838.8 843.3 DAY 26 8 29 4 17 3 3 29 25 2 18 7 MIN. QFE PRESSURE IN HPA 824.4 820.5 822.8 823.5 826.1 823.4 823.7 824.4 824.5 826.4 830.8 829.9 820.5 DAY 6 5 13 10 29 19 6 8 20 27 29 16 MEAN QNH PRESSURE IN HPA 1019.4 1016.2 1014.4 1017.3 1018.3 1014.8 1016.4 1016.4 1016.6 1021.1 1023.8 1021.9 1018.0 MAX. QNH PRESSURE IN HPA 1026.0 1022.7 1018.5 1021.9 1022.1 1018.2 1022.0 1022.8 1024.5 1028.7 1032.7 1027.4 1032.7 DAY 26 8 29 4 17 3 3 29 25 2 18 7 MIN. QNH PRESSURE IN HPA 1010.4 1005.8 1008.6 1009.4 1012.4 1009.3 1009.6 1010.4 1010.6 1012.8 1018.0 1016.9 1005.8 DAY 6 5 13 10 29 19 6 8 20 27 29 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 NATANZ (99421) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 33 32 N LONGITUDE 51 54 E DATA PROCESSING CENTER ELEVATION 1684.9 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 832.6 829.9 828.1 830.4 831.2 828.1 829.3 829.3 829.6 833.9 836.3 834.6 831.1 MAX. QFE PRESSURE IN HPA 837.7 835.4 832.0 834.4 835.0 832.1 834.2 834.7 836.3 840.2 844.3 839.3 844.3 DAY 25 8 29 4 4 27 3 29 25 2 18 7 MIN. QFE PRESSURE IN HPA 826.8 822.4 823.5 824.0 826.2 823.7 823.3 824.3 824.5 827.9 831.3 829.9 822.4 DAY 6 5 13 10 29 19 7 8 20 27 28 24 MEAN QNH PRESSURE IN HPA 1020.1 1016.9 1014.9 1017.5 1018.4 1014.8 1016.2 1016.2 1016.6 1021.6 1024.4 1022.4 1018.3 MAX. QNH PRESSURE IN HPA 1026.1 1023.4 1019.4 1022.2 1022.9 1019.5 1022.0 1022.6 1024.5 1029.1 1033.9 1028.0 1033.9 DAY 25 8 29 4 4 27 3 29 25 2 18 7 MIN. QNH PRESSURE IN HPA 1013.3 1008.1 1009.4 1010.0 1012.6 1009.6 1009.1 1010.3 1010.6 1014.6 1018.6 1016.9 1008.1 DAY 6 5 13 10 29 19 7 8 20 27 28 24 MEAN QFF PRESSURE IN HPA 1024.6 1016.9 1013.7 1010.8 1006.8 999.6 1000.9 1000.2 1002.5 1013.9 1022.4 1021.9 1011.2 MAX. QFF PRESSURE IN HPA 1032.3 1025.6 1019.2 1023.2 1013.1 1008.6 1004.5 1009.5 1012.8 1023.6 1033.8 1031.5 1033.8 DAY 25 23 28 4 7 27 21 30 25 19 15 3 MIN. QFF PRESSURE IN HPA 1010.8 1001.9 1006.3 1000.9 997.9 993.2 994.2 993.4 997.7 1004.6 1015.8 1011.7 993.2 DAY 6 10 25 13 29 19 6 8 20 27 6 29 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 NATANZ (99421) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 33 32 N LONGITUDE 51 54 E DATA PROCESSING CENTER ELEVATION 1684.9 M MEANS AND EXTREMES FOR THE YEAR 1997 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AIR TEMPERATURE (C) 5.2 4.4 7.2 15.6 20.8 26.7 31.5 30.8 24.4 19.6 9.3 4.8 16.7 MINIMUN AIR TEMPERATURE (C) 0.1 -2.0 1.7 9.4 14.3 20.7 24.7 23.4 17.6 13.9 5.1 0.9 10.8 DAYS WITH MINIMUM TEMP. >=21 0 0 0 0 1 15 31 29 4 0 0 0 80 DAYS WITH MINIMUM TEMP. <=-4 2 11 1 0 0 0 0 0 0 0 0 1 15 DAYS WITH FREEZING MIN.<= 0 14 17 8 1 0 0 0 0 0 0 0 13 53 TEMPERATURE RECORDS LOWEST(C) -8.2 -9.8 -5.6 -2.0 7.0 16.5 21.0 19.0 11.4 7.0 0.8 -4.0 -9.8 DAY 29 7 9 12 6 20 7 29 15 25 28 29 MAXIMUM AIR TEMPERATURE (C) 8.5 8.2 10.7 19.5 24.5 30.0 35.4 34.5 27.9 22.7 11.8 7.5 20.1 DAYS WITH MAXIMUM TEMP. >=30 0 0 0 0 0 17 31 31 6 1 0 0 86 DAYS WITH MAXIMUM TEMP. <= 0 0 0 1 0 0 0 0 0 0 0 0 0 1 TEMPERATURE RECORDS HIGHEST(C) 15.6 17.8 16.8 26.6 29.4 35.0 38.2 38.6 33.2 30.2 19.2 13.2 38.6 DAY 7 22 23 27 30 16 30 14 2 6 4 9 DIF. BETWEEN (MAX.-MIN.) (C) 8.4 10.2 9.0 10.1 10.2 9.3 10.7 11.1 10.3 8.8 6.7 6.6 9.3 MEAN DAILY TEMP. (MDT) (C) 4.3 3.1 6.2 14.4 19.4 25.3 30.0 29.0 22.8 18.3 8.4 4.2 15.5 COOLING DEG. DAYS(BASE 21 0C) 0.0 0.0 0.0 1.3 22.1 130.0 280.0 246.6 63.2 10.7 0.0 0.0 754.1 HEATING DEG. DAYS(BASE 18 0C) 423.5 417.3 366.8 117.5 18.6 0.0 0.0 0.0 1.4 35.8 286.8 427.5 2095.3 DEWPOINT (MEAN C) -6.4 -12.3 -5.2 -3.0 1.9 5.6 7.3 1.2 1.6 1.7 -1.2 -2.0 -0.9 MIXING RATIO (G/KG) 2.94 2.00 3.37 4.00 5.47 7.08 8.03 5.17 5.23 5.32 4.35 4.04 4.75 VAPOUR PRESSURE (HPA) 3.91 2.66 4.45 5.30 7.25 9.33 10.52 6.84 6.95 7.07 5.79 5.37 6.29 SATURATION DEF. (HPA) 5.23 6.21 6.14 13.21 18.08 26.32 36.62 38.46 24.29 16.44 6.18 3.44 16.72 RELATIVE HUMIDITY (MEAN %) 46 30 46 30 31 27 24 16 23 32 51 64 35 RELATIVE HUMIDITY (MAX. %) 57 40 61 45 43 35 30 23 30 42 64 77 46 RELATIVE HUMIDITY (MIN. %) 37 24 37 21 23 22 19 12 19 26 42 53 28 RELATIVE HUMIDITY (MEAN% 03UTC) 51 38 58 39 40 34 30 22 30 39 60 69 43 RELATIVE HUMIDITY (MEAN% 09UTC) 42 28 42 27 28 25 22 14 21 27 44 58 32 RELATIVE HUMIDITY (MEAN% 15UTC) 48 28 43 33 30 27 21 14 23 35 54 72 36 RH=0 => RELATIVE HUMIDITY < 0.5% AMOUNT OF PRECIPITATION MM. 4.2 1.1 45.4 11.7 16.6 7.3 0.0 0.0 0.0 12.7 5.9 29.4 134.3 DAYS WITH PRECIPITATION >=10 0 0 1 0 0 0 0 0 0 1 0 1 3 DAYS WITH PRECIPITATION >= 5 0 0 3 1 0 0 0 0 0 1 0 3 8 DAYS WITH PRECIPITATION >= 1 2 1 9 2 6 1 0 0 0 2 2 4 29 DAYS WITH PRECIPITATION 3 2 11 6 13 9 0 0 0 7 7 9 67 GREATEST DAILY PRECIPITATION 2.0 1.0 10.1 8.0 4.0 4.0 0.0 0.0 0.0 11.0 2.4 16.0 16.0 DAY 16 1 13 5 19 14 ** ** ** 24 1 21 DAY WITH THUNDER STORM 0 0 0 0 2 2 0 0 0 1 0 0 5 DAYS WITH SNOW OR SLEET 3 1 4 0 0 0 0 0 0 0 0 2 10 DAYS WITH DUST 0 0 0 1 0 0 0 0 0 0 0 0 1 WIND DIRECTION (PREVAILING) 90 90 225 45 90 45 135 135 45 45 90 225 90 PREVAILING WIND SPEED(KNOTS) 5.0 5.1 11.4 6.9 6.2 6.8 6.5 6.5 5.2 6.0 4.8 9.4 5.8 PREVAILING WIND PERCENT 13.5 20.0 12.3 13.3 8.4 14.0 13.5 14.8 10.0 7.1 3.3 4.5 9.4 CALMS PERCENT OF WIND 61.3 45.0 51.0 48.0 61.9 56.7 58.7 53.5 66.0 72.9 85.3 89.7 62.6 NO. OF WIND OBSERVATION 155 140 155 150 155 150 155 155 150 155 150 155 1825 VECTOR WIND DIRECTION (MEAN) 218 250 255 18 14 74 106 119 77 276 217 221 114 VECTOR WIND MAGNITUDE(KNOTS) 0.4 0.3 1.2 0.8 0.2 1.0 1.6 2.1 1.0 0.3 0.4 0.3 0.3 WIND STEADINESES (MEAN %) 14.8 7.7 27.3 19.0 6.5 31.3 61.5 63.6 50.0 14.3 36.4 42.9 10.7 WIND SPEED (MEAN KNOTS) 2.7 3.9 4.4 4.2 3.1 3.2 2.6 3.3 2.0 2.1 1.1 0.7 2.8 FASTEST WIND DIRECTION 240 260 240 250 300 60 160 110 120 270 190 220 300 FASTEST WIND SPEED (KNOTS) 23 25 29 29 35 25 14 16 12 33 19 19 35 DAY 16 22 28 10 19 14 19 17 7 7 5 9 DAYS WITH SKY CLEAR (0-2)/8 19 25 10 16 8 17 23 31 30 19 9 14 221 DAYS WITH P.CLOUDY (3-6)/8 9 2 15 10 19 9 8 0 0 9 13 10 104 DAYS WITH CLOUDY (7-8)/8 3 1 6 4 4 4 0 0 0 3 8 7 40 DAYS WITH VISIBILITY =< 2 KM 0 0 1 0 1 0 0 0 0 0 0 2 4 DURATION OF SUNSHINE HOURS 215.3 264.7 211.8 281.1 280.9 287.1 330.3 369.9 320.4 255.2 161.8 184.7 3163.2 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION NATANZ (99421) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 33 32 N LONGITUDE 51 54 E DATA PROCESSING CENTER ELEVATION 1684.9 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 830.7 830.6 827.3 829.4 832.1 829.1 826.0 829.3 832.8 834.8 834.7 832.3 830.8 MAX. QFE PRESSURE IN HPA 837.1 837.5 839.7 835.7 837.9 833.6 830.3 833.5 838.6 839.8 843.8 839.5 843.8 DAY-HOUR 19- 6 17- 6 11- 6 23- 6 12- 6 11- 6 19- 6 28- 6 19- 6 9- 6 8- 6 28- 6 MIN. QFE PRESSURE IN HPA 819.4 824.7 816.4 821.0 824.0 823.8 821.1 823.4 827.2 830.7 830.4 824.2 816.4 DAY-HOUR 16- 3 5-15 29-12 9-15 4-15 24-15 16-15 5-15 3-12 23-12 19-12 10- 3 MEAN QNH PRESSURE IN HPA 1017.9 1017.8 1013.8 1016.4 1019.6 1016.0 1012.3 1016.2 1020.3 1022.7 1022.6 1019.7 1017.9 MAX. QNH PRESSURE IN HPA 1025.4 1025.9 1028.5 1023.8 1026.4 1021.3 1017.4 1021.2 1027.2 1028.6 1033.3 1028.2 1033.3 DAY-HOUR 19- 6 17- 6 11- 6 23- 6 12- 6 11- 6 19- 6 28- 6 19- 6 9- 6 8- 6 28- 6 MIN. QNH PRESSURE IN HPA 1004.5 1010.8 1001.0 1006.4 1010.0 1009.7 1006.6 1009.3 1013.7 1017.9 1017.5 1010.2 1001.0 DAY-HOUR 16- 3 5-15 29-12 9-15 4-15 24-15 16-15 5-15 3-12 23-12 19-12 10- 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 830.7 830.6 827.5 829.7 832.7 829.7 826.4 829.5 833.3 835.1 834.8 832.2 831.0 MAX. QFE PRESSURE IN HPA 836.3 836.7 838.1 834.8 837.1 833.1 829.6 832.2 838.1 838.9 842.9 837.9 842.9 DAY 24 17 11 24 12 8 9 10 19 9 8 28 MIN. QFE PRESSURE IN HPA 819.4 825.6 821.2 822.7 826.2 825.6 822.2 825.0 829.2 831.9 831.5 824.2 819.4 DAY 16 27 25 5 5 30 16 6 13 23 20 10 MEAN QNH PRESSURE IN HPA 1017.9 1017.7 1014.1 1016.7 1020.2 1016.7 1012.8 1016.5 1020.9 1023.1 1022.7 1019.7 1018.3 MAX. QNH PRESSURE IN HPA 1024.5 1024.9 1026.6 1022.7 1025.4 1020.7 1016.6 1019.6 1026.6 1027.5 1032.3 1026.4 1032.3 DAY 24 17 11 24 12 8 9 10 19 9 8 28 MIN. QNH PRESSURE IN HPA 1004.5 1011.9 1006.7 1008.4 1012.6 1011.9 1007.8 1011.1 1016.1 1019.3 1018.8 1010.2 1004.5 DAY 16 27 25 5 5 30 16 6 13 23 20 10 MEAN QFF PRESSURE IN HPA 1018.6 1019.2 1012.9 1009.7 1009.6 1001.9 994.8 999.5 1008.3 1013.5 1020.1 1020.4 1010.7 MAX. QFF PRESSURE IN HPA 1027.5 1028.5 1027.3 1021.5 1017.2 1005.7 1000.3 1005.0 1015.5 1017.9 1030.4 1031.0 1031.0 DAY 19 8 11 12 7 8 9 29 15 9 8 29 MIN. QFF PRESSURE IN HPA 999.6 1006.2 1001.0 1000.9 1003.8 996.4 989.4 993.1 1001.0 1007.3 1015.1 1007.3 989.4 DAY 16 22 25 5 4 30 16 6 3 6 5 10 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION NATANZ (99421) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 33 32 N LONGITUDE 51 54 E DATA PROCESSING CENTER ELEVATION 1684.9 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 831.7 831.7 828.4 830.4 833.2 830.2 827.0 830.3 833.9 835.8 835.6 833.2 831.8 MAX. QFE PRESSURE IN HPA 837.1 837.5 839.7 835.7 837.9 833.6 830.3 833.5 838.6 839.8 843.8 839.5 843.8 DAY 19 17 11 23 12 11 19 28 19 9 8 28 MIN. QFE PRESSURE IN HPA 821.9 826.6 819.8 823.2 827.0 825.8 822.8 825.8 829.9 832.7 832.2 824.9 819.8 DAY 16 27 25 11 5 30 16 5 3 23 19 10 MEAN QNH PRESSURE IN HPA 1019.1 1019.0 1015.1 1017.6 1020.9 1017.3 1013.5 1017.4 1021.6 1023.9 1023.7 1020.8 1019.2 MAX. QNH PRESSURE IN HPA 1025.4 1025.9 1028.5 1023.8 1026.4 1021.3 1017.4 1021.2 1027.2 1028.6 1033.3 1028.2 1033.3 DAY 19 17 11 23 12 11 19 28 19 9 8 28 MIN. QNH PRESSURE IN HPA 1007.5 1013.0 1005.0 1009.0 1013.5 1012.1 1008.6 1012.1 1016.9 1020.2 1019.6 1011.0 1005.0 DAY 16 27 25 11 5 30 16 5 3 23 19 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 830.7 830.9 827.5 829.8 832.5 829.4 826.5 829.8 833.0 834.8 834.6 832.0 830.9 MAX. QFE PRESSURE IN HPA 836.5 836.4 838.4 834.9 837.0 832.6 829.9 832.8 837.1 839.7 842.8 838.3 842.8 DAY 19 17 11 23 12 8 19 28 19 9 8 28 MIN. QFE PRESSURE IN HPA 822.0 825.7 818.0 821.9 826.3 824.9 822.6 824.7 828.8 831.2 830.9 824.2 818.0 DAY 17 27 29 10 5 30 16 5 3 23 19 10 MEAN QNH PRESSURE IN HPA 1017.9 1018.1 1014.1 1016.8 1020.0 1016.4 1012.9 1016.8 1020.5 1022.7 1022.4 1019.4 1018.2 MAX. QNH PRESSURE IN HPA 1024.7 1024.6 1026.9 1022.8 1025.3 1020.1 1016.9 1020.3 1025.4 1028.5 1032.1 1026.8 1032.1 DAY 19 17 11 23 12 8 19 28 19 9 8 28 MIN. QNH PRESSURE IN HPA 1007.6 1012.0 1002.9 1007.5 1012.7 1011.0 1008.3 1010.8 1015.6 1018.5 1018.1 1010.2 1002.9 DAY 17 27 29 10 5 30 16 5 3 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 829.8 829.8 826.3 828.5 831.1 828.3 825.1 828.4 831.8 833.9 834.0 831.7 829.9 MAX. QFE PRESSURE IN HPA 835.6 835.1 836.9 833.9 835.2 832.2 828.2 831.8 835.6 838.6 841.9 838.3 841.9 DAY 19 7 11 13 16 14 19 24 18 10 8 28 MIN. QFE PRESSURE IN HPA 821.6 824.8 816.4 821.3 824.6 823.8 821.2 823.6 827.2 830.7 830.4 824.6 816.4 DAY 17 5 29 10 4 30 11 5 3 23 19 10 MEAN QNH PRESSURE IN HPA 1016.9 1016.8 1012.7 1015.3 1018.4 1015.0 1011.3 1015.2 1019.1 1021.6 1021.8 1019.0 1016.9 MAX. QNH PRESSURE IN HPA 1023.7 1023.1 1025.2 1021.6 1023.2 1019.6 1014.9 1019.2 1023.7 1027.2 1031.1 1026.8 1031.1 DAY 19 7 11 13 16 14 19 24 18 10 8 28 MIN. QNH PRESSURE IN HPA 1007.1 1010.9 1001.0 1006.8 1010.7 1009.7 1006.7 1009.5 1013.7 1017.9 1017.5 1010.7 1001.0 DAY 17 5 29 10 4 30 11 5 3 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 NATANZ (99421) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 33 32 N LONGITUDE 51 54 E DATA PROCESSING CENTER ELEVATION 1684.9 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 830.6 830.1 826.8 828.8 831.2 828.1 824.8 828.4 831.9 834.3 834.7 832.3 830.2 MAX. QFE PRESSURE IN HPA 835.9 835.4 837.6 834.3 835.4 833.6 827.5 831.6 835.6 838.9 842.3 838.7 842.3 DAY 12 7 11 13 11 14 28 24 18 8 7 28 MIN. QFE PRESSURE IN HPA 822.6 824.7 817.6 821.0 824.0 823.8 821.1 823.4 827.3 831.5 831.2 825.5 817.6 DAY 17 5 29 9 4 24 16 5 2 6 19 10 MEAN QNH PRESSURE IN HPA 1017.7 1017.2 1013.3 1015.6 1018.5 1014.8 1011.0 1015.2 1019.3 1022.1 1022.6 1019.7 1017.2 MAX. QNH PRESSURE IN HPA 1024.0 1023.4 1026.0 1022.1 1023.4 1021.3 1014.1 1018.9 1023.7 1027.5 1031.5 1027.3 1031.5 DAY 12 7 11 13 11 14 28 24 18 8 7 28 MIN. QNH PRESSURE IN HPA 1008.3 1010.8 1002.4 1006.4 1010.0 1009.7 1006.6 1009.3 1013.9 1018.8 1018.5 1011.7 1002.4 DAY 17 5 29 9 4 24 16 5 2 6 19 10 MEAN QFF PRESSURE IN HPA 1018.3 1018.7 1011.8 1008.5 1007.7 999.8 992.8 998.2 1006.7 1012.6 1020.0 1020.4 1009.6 MAX. QFF PRESSURE IN HPA 1027.4 1031.5 1025.5 1019.7 1015.8 1007.4 997.3 1003.7 1014.7 1017.9 1028.9 1031.5 1031.5 DAY 19 7 11 13 6 14 8 28 15 8 8 28 MIN. QFF PRESSURE IN HPA 1005.5 1005.9 997.9 998.5 998.2 994.0 987.9 990.7 998.2 1004.8 1014.0 1009.1 987.9 DAY 16 22 29 9 4 30 16 5 2 6 5 10 PRESSURE AT HOUR 1800 UTC. MEAN QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** PRESSURE AT HOUR 2100 UTC. MEAN QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION NATANZ (99421) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 33 32 N LONGITUDE 51 54 E DATA PROCESSING CENTER ELEVATION 1684.9 M MEANS AND EXTREMES FOR THE YEAR 1998 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AIR TEMPERATURE (C) 1.4 3.6 9.4 17.2 21.4 28.2 29.6 28.9 25.2 17.9 14.3 10.0 17.3 MINIMUN AIR TEMPERATURE (C) -2.8 -1.0 3.7 10.6 14.3 20.5 23.2 22.6 18.8 11.8 8.7 4.7 11.3 DAYS WITH MINIMUM TEMP. >=21 0 0 0 0 0 13 24 23 7 0 0 0 67 DAYS WITH MINIMUM TEMP. <=-4 11 6 2 0 0 0 0 0 0 0 0 0 19 DAYS WITH FREEZING MIN.<= 0 28 22 6 0 0 0 0 0 0 0 0 0 56 TEMPERATURE RECORDS LOWEST(C) -7.4 -8.2 -5.8 2.8 6.8 15.0 18.0 18.0 14.4 4.0 4.0 1.0 -8.2 DAY 14 17 2 6 3 3 25 4 12 10 25 5 MAXIMUM AIR TEMPERATURE (C) 4.2 7.1 13.2 21.2 25.1 31.6 33.5 32.5 28.6 21.3 17.8 13.3 20.8 DAYS WITH MAXIMUM TEMP. >=30 0 0 0 0 5 24 28 25 9 0 0 0 91 DAYS WITH MAXIMUM TEMP. <= 0 1 2 1 0 0 0 0 0 0 0 0 0 4 TEMPERATURE RECORDS HIGHEST(C) 9.6 18.0 22.4 28.2 32.2 35.6 38.2 38.0 33.4 29.0 22.2 19.0 38.2 DAY 30 7 29 17 29 28 11 20 3 2 20 14 DIF. BETWEEN (MAX.-MIN.) (C) 7.0 8.1 9.5 10.6 10.8 11.1 10.3 9.9 9.8 9.5 9.1 8.6 9.5 MEAN DAILY TEMP. (MDT) (C) 0.7 3.0 8.4 15.9 19.7 26.0 28.3 27.6 23.7 16.5 13.2 9.0 16.0 COOLING DEG. DAYS(BASE 21 0C) 0.0 0.0 0.0 5.0 27.9 151.3 227.1 204.2 84.0 7.3 0.0 0.0 706.8 HEATING DEG. DAYS(BASE 18 0C) 536.2 419.5 296.6 86.9 28.7 0.0 0.0 0.0 0.0 77.2 142.6 277.8 1865.5 DEWPOINT (MEAN C) -4.6 -3.9 -2.1 0.8 4.8 0.7 4.0 3.0 0.2 -1.1 -5.8 -5.2 -0.8 MIXING RATIO (G/KG) 3.37 3.56 4.19 5.12 6.61 5.13 6.37 6.05 4.95 4.38 3.11 3.28 4.68 VAPOUR PRESSURE (HPA) 4.47 4.72 5.55 6.77 8.74 6.80 8.40 7.99 6.57 5.84 4.15 4.38 6.20 SATURATION DEF. (HPA) 2.43 3.66 7.01 13.80 17.75 32.01 34.08 32.88 26.08 15.61 12.47 8.25 17.17 RELATIVE HUMIDITY (MEAN %) 67 62 49 36 37 19 21 22 22 31 27 38 36 RELATIVE HUMIDITY (MAX. %) 81 78 65 50 48 26 30 31 30 40 35 47 47 RELATIVE HUMIDITY (MIN. %) 53 50 39 27 29 14 16 16 17 25 21 31 28 RELATIVE HUMIDITY (MEAN% 03UTC) 76 74 61 47 46 26 30 31 28 38 30 42 44 RELATIVE HUMIDITY (MEAN% 09UTC) 63 55 43 32 33 17 19 19 18 28 24 34 32 RELATIVE HUMIDITY (MEAN% 15UTC) 69 65 49 35 35 16 18 20 22 33 31 42 36 RH=0 => RELATIVE HUMIDITY < 0.5% AMOUNT OF PRECIPITATION MM. 20.6 61.3 85.2 7.4 21.3 0.0 0.5 9.4 0.2 12.0 0.2 2.9 221.0 DAYS WITH PRECIPITATION >=10 0 2 3 0 0 0 0 0 0 0 0 0 5 DAYS WITH PRECIPITATION >= 5 2 3 6 0 2 0 0 1 0 1 0 0 15 DAYS WITH PRECIPITATION >= 1 7 7 9 3 5 0 0 2 0 2 0 1 36 DAYS WITH PRECIPITATION 9 12 9 6 7 0 1 4 2 4 1 4 59 GREATEST DAILY PRECIPITATION 5.0 30.0 26.0 3.0 8.0 0.0 0.5 5.0 0.2 8.0 0.2 2.0 30.0 DAY 13 10 18 6 14 ** 25 4 14 10 13 4 DAY WITH THUNDER STORM 0 0 0 2 2 0 0 1 2 0 0 0 7 DAYS WITH SNOW OR SLEET 5 6 2 0 0 0 0 0 0 0 0 0 13 DAYS WITH DUST 0 0 1 1 1 2 0 0 0 0 0 0 5 WIND DIRECTION (PREVAILING) 90 315 45 45 45 90 90 45 45 90 90 90 45 PREVAILING WIND SPEED(KNOTS) 5.0 12.4 5.1 6.2 5.9 5.6 5.5 5.6 5.9 4.7 4.8 4.5 5.4 PREVAILING WIND PERCENT 5.2 5.7 11.6 11.3 16.1 22.7 17.4 19.4 20.0 16.8 10.0 7.7 11.8 CALMS PERCENT OF WIND 84.5 73.6 59.4 50.7 50.3 36.7 40.0 41.3 52.0 65.2 69.3 76.1 58.2 NO. OF WIND OBSERVATION 155 140 155 150 155 150 155 155 150 155 150 155 1825 VECTOR WIND DIRECTION (MEAN) 15 275 240 215 37 93 80 74 54 63 80 93 75 VECTOR WIND MAGNITUDE(KNOTS) 0.1 0.7 1.4 0.5 0.9 2.6 1.9 2.4 1.9 1.2 0.4 0.4 0.7 WIND STEADINESES (MEAN %) 11.1 24.1 29.8 10.2 28.1 70.3 54.3 68.6 65.5 70.6 23.5 33.3 24.1 WIND SPEED (MEAN KNOTS) 0.9 2.9 4.7 4.9 3.2 3.7 3.5 3.5 2.9 1.7 1.7 1.2 2.9 FASTEST WIND DIRECTION 230 240 270 300 220 120 270 70 360 180 180 220 270 FASTEST WIND SPEED (KNOTS) 14 39 58 35 27 12 17 14 12 10 12 16 58 DAY 30 8 30 6 29 12 17 2 4 11 10 1 DAYS WITH SKY CLEAR (0-2)/8 15 10 13 12 16 23 16 19 24 28 15 10 201 DAYS WITH P.CLOUDY (3-6)/8 10 10 10 13 11 7 15 12 6 1 12 14 121 DAYS WITH CLOUDY (7-8)/8 6 8 8 5 4 0 0 0 0 2 3 7 43 DAYS WITH VISIBILITY =< 2 KM 4 3 2 0 0 0 0 0 0 0 0 1 10 DURATION OF SUNSHINE HOURS 208.3 176.2 219.4 264.6 296.4 357.0 329.8 340.6 285.4 287.0 235.8 200.5 3201.0 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION NATANZ (99421) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 33 32 N LONGITUDE 51 54 E DATA PROCESSING CENTER ELEVATION 1684.9 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 829.8 830.5 829.8 831.1 831.8 831.2 828.0 831.0 831.7 835.1 835.6 835.9 831.8 MAX. QFE PRESSURE IN HPA 837.8 842.2 837.3 841.0 839.3 837.0 836.4 836.0 835.9 841.0 841.7 842.6 842.6 DAY-HOUR 4- 6 23- 6 28- 6 12- 6 8- 6 17- 3 20- 6 25- 6 29- 6 10- 6 21- 6 9- 6 MIN. QFE PRESSURE IN HPA 816.6 820.4 819.8 823.3 823.5 826.1 819.9 826.5 826.7 828.6 830.5 828.5 816.6 DAY-HOUR 13- 3 15- 9 18-15 23-15 29-12 29-15 8-15 22-15 3-15 1-12 1-12 24- 3 MEAN QNH PRESSURE IN HPA 1016.8 1017.6 1016.9 1018.3 1019.1 1018.5 1014.6 1018.3 1019.1 1023.1 1023.7 1024.0 1019.2 MAX. QNH PRESSURE IN HPA 1026.2 1031.4 1025.7 1030.0 1028.0 1025.3 1024.6 1024.1 1024.0 1030.0 1030.8 1031.9 1031.9 DAY-HOUR 4- 6 23- 6 28- 6 12- 6 8- 6 17- 3 20- 6 25- 6 29- 6 10- 6 21- 6 9- 6 MIN. QNH PRESSURE IN HPA 1001.2 1005.7 1005.0 1009.1 1009.4 1012.4 1005.1 1012.9 1013.2 1015.4 1017.6 1015.3 1001.2 DAY-HOUR 13- 3 15- 9 18-15 23-15 29-12 29-15 8-15 22-15 3-15 1-12 1-12 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 829.6 830.4 830.0 831.4 832.2 831.8 828.5 831.5 832.0 835.1 835.7 835.8 832.0 MAX. QFE PRESSURE IN HPA 836.3 841.1 836.7 840.1 838.3 837.0 835.9 835.0 835.2 840.0 841.0 841.5 841.5 DAY 4 23 28 12 8 17 20 25 13 10 21 10 MIN. QFE PRESSURE IN HPA 816.6 820.7 821.9 825.0 825.6 828.0 822.3 828.3 826.8 829.5 831.9 828.5 816.6 DAY 13 14 15 24 30 29 8 22 4 1 11 24 MEAN QNH PRESSURE IN HPA 1016.5 1017.5 1017.0 1018.7 1019.7 1019.2 1015.2 1018.8 1019.4 1023.1 1023.8 1023.9 1019.4 MAX. QNH PRESSURE IN HPA 1024.5 1030.1 1024.9 1029.0 1026.8 1025.3 1024.0 1022.9 1023.2 1028.8 1030.0 1030.6 1030.6 DAY 4 23 28 12 8 17 20 25 13 10 21 10 MIN. QNH PRESSURE IN HPA 1001.2 1006.1 1007.5 1011.1 1011.9 1014.7 1008.0 1015.0 1013.3 1016.5 1019.3 1015.3 1001.2 DAY 13 14 15 24 30 29 8 22 4 1 11 24 MEAN QFF PRESSURE IN HPA 1019.6 1019.1 1014.3 1010.6 1008.4 1003.6 998.5 1002.9 1006.0 1015.2 1018.7 1021.2 1011.5 MAX. QFF PRESSURE IN HPA 1028.1 1035.0 1022.4 1022.8 1019.3 1011.2 1009.1 1007.7 1012.8 1024.5 1024.3 1028.6 1035.0 DAY 4 23 4 7 3 17 20 8 13 10 25 29 MIN. QFF PRESSURE IN HPA 1003.9 1000.3 1001.7 1002.6 998.8 996.6 990.3 998.0 997.7 1004.5 1011.7 1010.9 990.3 DAY 13 8 15 24 30 29 5 21 4 1 11 24 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION NATANZ (99421) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 33 32 N LONGITUDE 51 54 E DATA PROCESSING CENTER ELEVATION 1684.9 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 830.5 831.4 830.8 832.2 832.9 832.3 829.1 832.1 832.9 836.3 836.6 836.9 832.8 MAX. QFE PRESSURE IN HPA 837.8 842.2 837.3 841.0 839.3 836.5 836.4 836.0 835.9 841.0 841.7 842.6 842.6 DAY 4 23 28 12 8 17 20 25 29 10 21 9 MIN. QFE PRESSURE IN HPA 818.6 821.1 823.1 825.4 825.8 828.2 823.0 828.8 828.2 830.5 832.9 829.9 818.6 DAY 13 15 15 24 30 29 8 22 4 1 11 24 MEAN QNH PRESSURE IN HPA 1017.7 1018.7 1017.9 1019.6 1020.5 1019.7 1015.9 1019.5 1020.4 1024.5 1024.8 1025.2 1020.4 MAX. QNH PRESSURE IN HPA 1026.2 1031.4 1025.7 1030.0 1028.0 1024.7 1024.6 1024.1 1024.0 1030.0 1030.8 1031.9 1031.9 DAY 4 23 28 12 8 17 20 25 29 10 21 9 MIN. QNH PRESSURE IN HPA 1003.6 1006.6 1008.9 1011.6 1012.1 1014.9 1008.8 1015.6 1014.9 1017.6 1020.5 1016.9 1003.6 DAY 13 15 15 24 30 29 8 22 4 1 11 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 829.7 830.5 830.2 831.4 832.1 831.6 828.4 831.5 832.1 835.3 835.6 835.8 832.0 MAX. QFE PRESSURE IN HPA 836.7 841.3 836.2 840.9 838.8 835.4 834.7 835.2 835.5 840.2 840.9 841.5 841.5 DAY 4 23 27 12 8 5 20 25 12 14 21 29 MIN. QFE PRESSURE IN HPA 817.5 820.4 823.0 825.0 825.0 828.0 822.6 827.6 827.7 829.9 831.5 829.6 817.5 DAY 13 15 15 23 30 29 8 22 4 1 1 21 MEAN QNH PRESSURE IN HPA 1016.7 1017.6 1017.3 1018.7 1019.6 1018.9 1015.2 1018.8 1019.5 1023.3 1023.6 1023.9 1019.4 MAX. QNH PRESSURE IN HPA 1024.9 1030.4 1024.4 1029.9 1027.4 1023.4 1022.6 1023.2 1023.5 1029.1 1029.9 1030.6 1030.6 DAY 4 23 27 12 8 5 20 25 12 14 21 29 MIN. QNH PRESSURE IN HPA 1002.3 1005.7 1008.8 1011.1 1011.1 1014.7 1008.3 1014.2 1014.3 1016.9 1018.8 1016.6 1002.3 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 ** ** ** ** ** ** ** ** ** ** ** ** PRESSURE AT HOUR 1200 UTC. MEAN QFE PRESSURE IN HPA 829.3 829.8 829.0 830.2 830.9 830.4 827.1 830.3 830.9 834.3 834.8 835.2 831.0 MAX. QFE PRESSURE IN HPA 835.9 840.3 835.3 839.4 837.6 834.2 833.4 833.6 834.5 838.7 840.4 841.4 841.4 DAY 4 23 26 12 8 6 20 25 12 9 21 9 MIN. QFE PRESSURE IN HPA 818.5 821.1 821.2 823.9 823.5 826.8 821.0 826.6 826.9 828.6 830.5 829.3 818.5 DAY 13 15 18 23 29 29 5 22 4 1 1 31 MEAN QNH PRESSURE IN HPA 1016.2 1016.9 1015.9 1017.3 1018.1 1017.5 1013.7 1017.4 1018.1 1022.1 1022.7 1023.2 1018.2 MAX. QNH PRESSURE IN HPA 1024.0 1029.2 1023.3 1028.1 1026.0 1022.0 1021.1 1021.3 1022.4 1027.3 1029.3 1030.5 1030.5 DAY 4 23 26 12 8 6 20 25 12 9 21 9 MIN. QNH PRESSURE IN HPA 1003.5 1006.6 1006.7 1009.9 1009.4 1013.3 1006.4 1013.0 1013.4 1015.4 1017.6 1016.2 1003.5 DAY 13 15 18 23 29 29 5 22 4 1 1 31 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION NATANZ (99421) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 33 32 N LONGITUDE 51 54 E DATA PROCESSING CENTER ELEVATION 1684.9 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 829.8 830.4 829.3 830.2 830.8 830.0 826.8 830.0 830.9 834.7 835.4 835.9 831.2 MAX. QFE PRESSURE IN HPA 836.0 840.0 835.6 838.6 837.1 833.8 833.0 832.7 834.5 840.0 840.9 842.1 842.1 DAY 22 23 27 12 8 5 20 29 12 9 21 29 MIN. QFE PRESSURE IN HPA 820.6 821.6 819.8 823.3 824.1 826.1 819.9 826.5 826.7 829.0 831.0 830.4 819.8 DAY 13 13 18 23 29 29 8 22 3 1 1 31 MEAN QNH PRESSURE IN HPA 1016.8 1017.5 1016.2 1017.2 1018.0 1017.0 1013.3 1017.0 1018.1 1022.6 1023.4 1024.0 1018.4 MAX. QNH PRESSURE IN HPA 1024.1 1028.8 1023.7 1027.2 1025.4 1021.5 1020.6 1020.2 1022.4 1028.8 1029.9 1031.3 1031.3 DAY 22 23 27 12 8 5 20 29 12 9 21 29 MIN. QNH PRESSURE IN HPA 1006.0 1007.1 1005.0 1009.1 1010.1 1012.4 1005.1 1012.9 1013.2 1015.9 1018.2 1017.5 1005.0 DAY 13 13 18 23 29 29 8 22 3 1 1 31 MEAN QFF PRESSURE IN HPA 1019.8 1019.0 1013.4 1008.9 1006.5 1001.4 996.6 1001.1 1004.8 1014.6 1018.2 1021.4 1010.5 MAX. QFF PRESSURE IN HPA 1028.1 1032.8 1021.7 1019.3 1017.0 1006.9 1007.1 1006.6 1011.6 1024.0 1025.3 1029.8 1032.8 DAY 22 23 4 7 2 17 20 3 12 10 24 29 MIN. QFF PRESSURE IN HPA 1010.9 1003.8 997.1 1001.2 996.6 994.5 987.4 996.4 996.9 1003.1 1011.1 1013.7 987.4 DAY 13 8 18 17 29 29 8 21 3 1 1 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 NATANZ (99421) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 33 32 N LONGITUDE 51 54 E DATA PROCESSING CENTER ELEVATION 1684.9 M MEANS AND EXTREMES FOR THE YEAR 1999 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AIR TEMPERATURE (C) 2.7 8.4 9.0 16.1 23.4 28.7 28.0 29.6 25.0 19.6 9.3 6.0 17.1 MINIMUN AIR TEMPERATURE (C) -1.1 2.7 4.1 9.9 16.1 21.2 21.7 23.0 18.5 14.0 4.7 1.4 11.3 DAYS WITH MINIMUM TEMP. >=21 0 0 0 0 1 16 21 29 7 0 0 0 74 DAYS WITH MINIMUM TEMP. <=-4 7 0 0 0 0 0 0 0 0 0 1 0 8 DAYS WITH FREEZING MIN.<= 0 19 5 1 0 0 0 0 0 0 0 2 10 37 TEMPERATURE RECORDS LOWEST(C) -7.6 -2.0 -3.0 4.6 10.6 17.2 16.0 20.4 12.4 5.8 -4.2 -3.4 -7.6 DAY 3 22 19 9 21 17 28 20 28 27 30 1 MAXIMUM AIR TEMPERATURE (C) 5.6 12.2 12.3 19.9 27.4 32.4 31.8 33.0 28.6 22.9 12.6 9.3 20.7 DAYS WITH MAXIMUM TEMP. >=30 0 0 0 0 5 27 21 31 16 0 0 0 100 DAYS WITH MAXIMUM TEMP. <= 0 0 0 0 0 0 0 0 0 0 0 0 0 0 TEMPERATURE RECORDS HIGHEST(C) 13.8 16.2 20.6 23.2 33.0 37.4 38.4 34.8 32.8 28.6 19.0 16.2 38.4 DAY 9 8 31 30 31 28 4 29 11 12 1 30 DIF. BETWEEN (MAX.-MIN.) (C) 6.7 9.5 8.2 10.0 11.3 11.2 10.1 10.0 10.1 8.9 7.9 7.9 9.4 MEAN DAILY TEMP. (MDT) (C) 2.2 7.5 8.2 14.9 21.7 26.8 26.8 28.0 23.5 18.4 8.6 5.3 16.0 COOLING DEG. DAYS(BASE 21 0C) 0.0 0.0 0.0 0.0 47.3 173.9 179.5 215.9 92.0 7.0 0.0 0.0 715.6 HEATING DEG. DAYS(BASE 18 0C) 488.5 295.3 303.5 95.9 1.8 0.0 0.0 0.0 2.0 33.9 280.7 392.2 1893.8 DEWPOINT (MEAN C) -4.0 -6.4 -4.6 0.4 -2.0 -2.3 3.5 2.6 1.4 -2.3 -1.4 -4.6 -1.6 MIXING RATIO (G/KG) 3.61 3.00 3.46 5.00 4.15 4.08 6.30 5.69 5.25 3.98 4.31 3.42 4.35 VAPOUR PRESSURE (HPA) 4.79 3.99 4.58 6.62 5.51 5.40 8.30 7.53 6.94 5.30 5.73 4.56 5.77 SATURATION DEF. (HPA) 2.84 7.32 7.41 12.05 24.13 34.70 30.60 34.45 25.59 18.22 6.44 5.06 17.40 RELATIVE HUMIDITY (MEAN %) 65 38 44 37 20 15 24 19 23 25 51 51 34 RELATIVE HUMIDITY (MAX. %) 78 51 55 49 29 22 34 25 30 32 63 63 44 RELATIVE HUMIDITY (MIN. %) 54 29 35 28 15 10 17 15 18 20 42 41 27 RELATIVE HUMIDITY (MEAN% 03UTC) 71 47 51 47 29 22 34 25 29 31 60 56 42 RELATIVE HUMIDITY (MEAN% 09UTC) 60 34 40 33 17 13 21 16 20 22 45 44 30 RELATIVE HUMIDITY (MEAN% 15UTC) 68 38 44 36 18 11 20 17 23 27 56 59 35 RH=0 => RELATIVE HUMIDITY < 0.5% AMOUNT OF PRECIPITATION MM. 48.1 2.3 71.9 13.6 1.0 0.0 4.0 0.0 0.0 0.0 18.4 15.9 175.2 DAYS WITH PRECIPITATION >=10 2 0 3 0 0 0 0 0 0 0 0 0 5 DAYS WITH PRECIPITATION >= 5 2 0 4 1 0 0 0 0 0 0 2 2 11 DAYS WITH PRECIPITATION >= 1 8 2 6 4 1 0 2 0 0 0 4 3 30 DAYS WITH PRECIPITATION 13 5 11 10 1 0 2 0 0 0 6 6 54 GREATEST DAILY PRECIPITATION 19.0 1.0 29.0 5.0 1.0 0.0 3.0 0.0 0.0 0.0 8.0 9.0 29.0 DAY 25 6 2 29 14 ** 28 ** ** ** 9 12 DAY WITH THUNDER STORM 1 0 0 3 1 0 1 0 0 0 0 0 6 DAYS WITH SNOW OR SLEET 5 0 2 0 0 0 0 0 0 0 0 0 7 DAYS WITH DUST 0 0 0 1 2 1 0 0 0 1 0 0 5 WIND DIRECTION (PREVAILING) 90 45 90 45 90 90 90 90 45 45 90 90 90 PREVAILING WIND SPEED(KNOTS) 4.1 4.7 5.5 6.2 6.3 6.1 6.1 5.7 6.5 5.8 4.9 4.3 5.5 PREVAILING WIND PERCENT 9.7 12.1 14.2 14.0 19.4 16.0 20.0 23.2 20.0 14.2 13.3 9.7 14.5 CALMS PERCENT OF WIND 74.8 57.1 55.5 49.3 41.9 43.3 33.5 38.1 47.3 54.8 66.0 77.4 53.3 NO. OF WIND OBSERVATION 155 140 155 150 155 150 155 155 150 155 150 155 1825 VECTOR WIND DIRECTION (MEAN) 70 301 193 56 65 75 89 101 58 49 78 90 77 VECTOR WIND MAGNITUDE(KNOTS) 0.5 0.2 0.5 0.7 1.7 1.4 2.6 2.7 2.3 1.2 0.7 0.6 1.1 WIND STEADINESES (MEAN %) 35.7 6.3 12.8 17.9 37.0 37.8 59.1 73.0 71.9 46.2 35.0 60.0 35.5 WIND SPEED (MEAN KNOTS) 1.4 3.2 3.9 3.9 4.6 3.7 4.4 3.7 3.2 2.6 2.0 1.0 3.1 FASTEST WIND DIRECTION 220 260 250 250 260 270 150 130 360 240 270 170 250 FASTEST WIND SPEED (KNOTS) 19 49 58 29 58 19 16 12 16 16 23 10 58 DAY 9 20 26 2 14 12 22 1 27 6 26 2 DAYS WITH SKY CLEAR (0-2)/8 8 17 12 11 25 26 27 25 29 26 13 15 234 DAYS WITH P.CLOUDY (3-6)/8 10 8 7 14 6 4 4 6 1 4 10 9 83 DAYS WITH CLOUDY (7-8)/8 13 3 12 5 0 0 0 0 0 1 7 7 48 DAYS WITH VISIBILITY =< 2 KM 7 2 0 0 0 0 0 0 0 0 2 1 12 DURATION OF SUNSHINE HOURS 147.2 219.7 202.1 256.3 349.6 364.1 361.2 355.6 321.4 270.3 223.6 206.8 3277.9 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION NATANZ (99421) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 33 32 N LONGITUDE 51 54 E DATA PROCESSING CENTER ELEVATION 1684.9 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 832.3 830.6 829.5 831.1 830.8 828.5 827.4 830.3 830.8 834.2 833.6 836.3 831.3 MAX. QFE PRESSURE IN HPA 842.4 837.5 836.8 835.4 838.7 834.4 832.7 836.9 836.9 837.7 839.1 842.2 842.4 DAY-HOUR 2- 6 12- 6 31- 6 30- 9 28- 6 1- 6 19- 6 20- 6 30- 6 1- 6 14- 6 6- 6 MIN. QFE PRESSURE IN HPA 823.9 820.6 823.3 822.6 821.3 820.7 823.3 825.5 825.8 829.1 826.2 828.9 820.6 DAY-HOUR 9- 9 20-15 21-12 8-12 20-15 24-15 22-15 14-15 11-15 31-12 26- 9 15-15 MEAN QNH PRESSURE IN HPA 1019.8 1017.7 1016.5 1018.3 1017.9 1015.3 1014.0 1017.4 1018.0 1022.0 1021.2 1024.4 1018.5 MAX. QNH PRESSURE IN HPA 1031.7 1025.9 1025.1 1023.4 1027.3 1022.2 1020.2 1025.2 1025.2 1026.1 1027.8 1031.4 1031.7 DAY-HOUR 2- 6 12- 6 31- 6 30- 9 28- 6 1- 6 19- 6 20- 6 30- 6 1- 6 14- 6 6- 6 MIN. QNH PRESSURE IN HPA 1009.9 1006.0 1009.1 1008.3 1006.8 1006.1 1009.1 1011.7 1012.1 1016.0 1012.6 1015.7 1006.0 DAY-HOUR 9- 9 20-15 21-12 8-12 20-15 24-15 22-15 14-15 11-15 31-12 26- 9 15-15 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY-HOUR **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY-HOUR **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** PRESSURE AT HOUR 0000 UTC. MEAN QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** PRESSURE AT HOUR 0300 UTC. MEAN QFE PRESSURE IN HPA 832.1 830.5 829.5 831.6 831.4 829.2 827.9 830.6 831.0 834.4 833.5 836.1 831.5 MAX. QFE PRESSURE IN HPA 840.6 836.2 836.3 834.4 837.4 834.0 832.5 836.2 835.5 836.5 837.6 841.3 841.3 DAY 2 12 31 11 28 1 19 20 30 27 14 6 MIN. QFE PRESSURE IN HPA 825.3 821.3 824.7 825.6 826.0 821.8 823.9 827.0 826.6 830.1 827.4 829.2 821.3 DAY 9 6 3 8 20 25 23 14 16 31 26 16 MEAN QNH PRESSURE IN HPA 1019.5 1017.6 1016.5 1018.9 1018.7 1016.1 1014.5 1017.7 1018.3 1022.2 1021.2 1024.2 1018.8 MAX. QNH PRESSURE IN HPA 1029.5 1024.4 1024.5 1022.2 1025.8 1021.8 1020.0 1024.4 1023.5 1024.7 1026.0 1030.4 1030.4 DAY 2 12 31 11 28 1 19 20 30 27 14 6 MIN. QNH PRESSURE IN HPA 1011.5 1006.8 1010.8 1011.9 1012.3 1007.4 1009.9 1013.5 1013.0 1017.2 1014.0 1016.1 1006.8 DAY 9 6 3 8 20 25 23 14 16 31 26 16 MEAN QFF PRESSURE IN HPA 1021.4 1015.9 1014.0 1011.5 1006.4 1000.2 998.8 1001.4 1005.2 1013.0 1018.8 1024.7 1010.9 MAX. QFF PRESSURE IN HPA 1035.3 1024.3 1024.6 1018.4 1012.0 1007.2 1005.0 1009.2 1014.4 1021.0 1029.6 1033.6 1035.3 DAY 3 12 19 11 2 17 28 20 28 27 30 6 MIN. QFF PRESSURE IN HPA 1008.7 1001.8 1006.8 1003.1 997.6 991.0 991.4 997.0 997.7 1007.6 1008.0 1013.8 991.0 DAY 9 21 22 14 20 25 23 7 16 31 26 16 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION NATANZ (99421) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 33 32 N LONGITUDE 51 54 E DATA PROCESSING CENTER ELEVATION 1684.9 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 833.1 831.6 830.5 832.2 831.9 829.7 828.5 831.4 831.9 835.4 834.5 837.2 832.3 MAX. QFE PRESSURE IN HPA 842.4 837.5 836.8 835.3 838.7 834.4 832.7 836.9 836.9 837.7 839.1 842.2 842.4 DAY 2 12 31 11 28 1 19 20 30 1 14 6 MIN. QFE PRESSURE IN HPA 825.3 824.2 825.4 825.9 825.7 821.8 824.7 827.8 827.4 831.2 827.4 831.2 821.8 DAY 9 20 21 8 20 25 14 14 16 31 26 14 MEAN QNH PRESSURE IN HPA 1020.7 1018.9 1017.7 1019.6 1019.3 1016.7 1015.3 1018.7 1019.3 1023.5 1022.3 1025.5 1019.8 MAX. QNH PRESSURE IN HPA 1031.7 1025.9 1025.1 1023.3 1027.3 1022.2 1020.2 1025.2 1025.2 1026.1 1027.8 1031.4 1031.7 DAY 2 12 31 11 28 1 19 20 30 1 14 6 MIN. QNH PRESSURE IN HPA 1011.5 1010.2 1011.6 1012.2 1012.0 1007.4 1010.8 1014.4 1014.0 1018.5 1014.0 1018.5 1007.4 DAY 9 20 21 8 20 25 14 14 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 832.5 830.9 829.9 831.5 831.2 828.9 827.9 830.8 831.1 834.4 833.5 836.3 831.6 MAX. QFE PRESSURE IN HPA 841.9 836.8 836.1 835.4 837.6 833.6 831.9 835.9 836.5 836.9 838.6 841.4 841.9 DAY 2 12 31 30 28 1 19 20 30 1 14 6 MIN. QFE PRESSURE IN HPA 823.9 823.3 824.7 823.6 824.1 821.4 823.9 826.7 826.7 829.7 826.2 829.7 821.4 DAY 9 20 2 8 20 25 14 14 16 31 26 15 MEAN QNH PRESSURE IN HPA 1019.9 1018.1 1016.9 1018.8 1018.4 1015.8 1014.5 1018.0 1018.3 1022.2 1021.2 1024.5 1018.9 MAX. QNH PRESSURE IN HPA 1031.1 1025.1 1024.2 1023.4 1026.0 1021.3 1019.3 1024.0 1024.7 1025.2 1027.2 1030.5 1031.1 DAY 2 12 31 30 28 1 19 20 30 1 14 6 MIN. QNH PRESSURE IN HPA 1009.9 1009.1 1010.8 1009.5 1010.1 1006.9 1009.9 1013.2 1013.2 1016.7 1012.6 1016.7 1006.9 DAY 9 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 ** ** ** ** ** ** ** ** ** ** ** ** PRESSURE AT HOUR 1200 UTC. MEAN QFE PRESSURE IN HPA 831.7 829.8 828.7 830.1 829.8 827.6 826.5 829.6 829.9 833.4 832.9 835.7 830.5 MAX. QFE PRESSURE IN HPA 841.0 835.9 834.3 833.8 836.0 832.3 829.8 834.1 835.7 835.5 837.9 840.6 841.0 DAY 2 12 30 30 28 1 28 20 30 1 30 6 MIN. QFE PRESSURE IN HPA 823.9 822.3 823.3 822.6 821.8 820.9 823.6 826.0 825.9 829.1 826.6 829.0 820.9 DAY 9 20 21 8 20 25 14 14 15 31 1 15 MEAN QNH PRESSURE IN HPA 1019.0 1016.8 1015.5 1017.2 1016.8 1014.2 1013.0 1016.5 1017.0 1021.0 1020.5 1023.7 1017.6 MAX. QNH PRESSURE IN HPA 1030.0 1024.0 1022.1 1021.5 1024.1 1019.8 1016.8 1021.9 1023.8 1023.5 1026.4 1029.5 1030.0 DAY 2 12 30 30 28 1 28 20 30 1 30 6 MIN. QNH PRESSURE IN HPA 1009.9 1008.0 1009.1 1008.3 1007.4 1006.3 1009.5 1012.3 1012.2 1016.0 1013.0 1015.9 1006.3 DAY 9 20 21 8 20 25 14 14 15 31 1 15 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION NATANZ (99421) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 33 32 N LONGITUDE 51 54 E DATA PROCESSING CENTER ELEVATION 1684.9 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 832.2 830.2 829.1 830.2 829.6 827.2 826.2 829.3 830.1 833.7 833.5 836.2 830.6 MAX. QFE PRESSURE IN HPA 840.9 836.2 834.7 833.7 835.2 831.6 829.5 833.5 835.7 835.8 838.9 840.9 840.9 DAY 2 12 30 11 28 1 18 19 30 1 30 5 MIN. QFE PRESSURE IN HPA 824.8 820.6 824.0 822.6 821.3 820.7 823.3 825.5 825.8 829.8 828.5 828.9 820.6 DAY 9 20 21 8 20 24 22 14 11 31 1 15 MEAN QNH PRESSURE IN HPA 1019.7 1017.2 1016.0 1017.2 1016.6 1013.8 1012.6 1016.2 1017.1 1021.4 1021.1 1024.4 1017.8 MAX. QNH PRESSURE IN HPA 1029.9 1024.4 1022.6 1021.4 1023.2 1018.9 1016.5 1021.2 1023.8 1023.9 1027.5 1029.9 1029.9 DAY 2 12 30 11 28 1 18 19 30 1 30 5 MIN. QNH PRESSURE IN HPA 1010.9 1006.0 1010.0 1008.3 1006.8 1006.1 1009.1 1011.7 1012.1 1016.8 1015.3 1015.7 1006.0 DAY 9 20 21 8 20 24 22 14 11 31 1 15 MEAN QFF PRESSURE IN HPA 1021.6 1015.4 1013.4 1009.7 1004.3 998.0 996.9 999.9 1004.0 1012.1 1018.8 1024.6 1009.9 MAX. QFF PRESSURE IN HPA 1035.4 1023.6 1022.2 1017.0 1009.3 1003.2 1003.8 1006.4 1013.9 1019.5 1032.7 1032.2 1035.4 DAY 2 12 19 10 22 8 28 20 30 26 30 5 MIN. QFF PRESSURE IN HPA 1006.0 1000.6 1003.3 1000.3 992.5 989.2 990.2 995.5 996.9 1007.6 1008.9 1014.8 989.2 DAY 9 20 21 8 20 24 23 13 11 12 25 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 NATANZ (99421) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 33 32 N LONGITUDE 51 54 E DATA PROCESSING CENTER ELEVATION 1684.9 M MEANS AND EXTREMES FOR THE YEAR 2000 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AIR TEMPERATURE (C) 3.4 5.0 10.1 19.6 24.8 27.8 29.2 29.2 25.5 16.3 7.6 4.8 16.9 MINIMUN AIR TEMPERATURE (C) -1.4 -0.6 3.8 12.8 17.2 20.1 22.3 22.4 19.4 10.9 3.8 1.0 11.0 DAYS WITH MINIMUM TEMP. >=21 0 0 0 0 1 13 20 24 9 0 0 0 67 DAYS WITH MINIMUM TEMP. <=-4 10 4 0 0 0 0 0 0 0 0 0 0 14 DAYS WITH FREEZING MIN.<= 0 20 18 8 0 0 0 0 0 0 0 1 7 54 TEMPERATURE RECORDS LOWEST(C) -7.4 -6.2 -3.4 7.6 12.6 11.4 18.8 15.5 15.0 6.0 0.0 -2.0 -7.4 DAY 18 9 4 2 2 14 20 20 25 5 19 27 MAXIMUM AIR TEMPERATURE (C) 7.0 8.8 13.8 23.5 28.9 31.9 32.9 33.0 29.4 19.8 9.9 7.7 20.5 DAYS WITH MAXIMUM TEMP. >=30 0 0 0 0 11 21 29 30 14 0 0 0 105 DAYS WITH MAXIMUM TEMP. <= 0 1 1 0 0 0 0 0 0 0 0 0 0 2 TEMPERATURE RECORDS HIGHEST(C) 13.4 15.2 20.4 27.2 33.8 38.4 37.4 36.2 34.4 25.8 17.8 13.8 38.4 DAY 3 24 24 15 26 24 11 3 10 26 3 25 DIF. BETWEEN (MAX.-MIN.) (C) 8.4 9.4 10.0 10.7 11.7 11.8 10.6 10.6 10.0 8.9 6.1 6.7 9.5 MEAN DAILY TEMP. (MDT) (C) 2.8 4.1 8.8 18.1 23.0 26.0 27.6 27.7 24.4 15.4 6.9 4.3 15.8 COOLING DEG. DAYS(BASE 21 0C) 0.0 0.0 0.0 1.2 71.0 157.0 204.8 206.2 102.5 0.0 0.0 0.0 742.8 HEATING DEG. DAYS(BASE 18 0C) 470.7 402.9 285.6 27.6 0.0 0.6 0.0 0.0 0.0 90.5 333.2 423.4 2034.4 DEWPOINT (MEAN C) -8.0 -7.9 -8.1 -1.2 1.8 1.2 2.1 0.8 2.6 2.8 0.1 -1.2 -1.3 MIXING RATIO (G/KG) 2.67 2.68 2.66 4.47 5.41 5.30 5.61 5.05 5.72 5.75 4.77 4.34 4.54 VAPOUR PRESSURE (HPA) 3.55 3.56 3.53 5.93 7.15 6.99 7.41 6.68 7.57 7.64 6.35 5.77 6.01 SATURATION DEF. (HPA) 4.62 5.52 9.33 17.46 24.94 31.67 33.88 34.61 25.82 11.46 4.32 2.93 17.21 RELATIVE HUMIDITY (MEAN %) 46 43 29 26 23 20 19 17 24 45 62 69 35 RELATIVE HUMIDITY (MAX. %) 58 58 43 35 30 27 26 24 30 55 75 80 45 RELATIVE HUMIDITY (MIN. %) 36 33 21 20 19 15 14 13 19 37 53 57 28 RELATIVE HUMIDITY (MEAN% 03UTC) 50 55 42 34 29 27 26 24 30 53 70 72 43 RELATIVE HUMIDITY (MEAN% 09UTC) 43 39 25 23 21 18 17 15 21 40 58 66 32 RELATIVE HUMIDITY (MEAN% 15UTC) 50 42 27 26 22 17 15 15 23 46 68 74 35 RH=0 => RELATIVE HUMIDITY < 0.5% AMOUNT OF PRECIPITATION MM. 26.8 9.7 2.2 2.9 0.0 0.0 0.0 0.0 0.0 35.8 56.8 59.9 194.1 DAYS WITH PRECIPITATION >=10 2 0 0 0 0 0 0 0 0 1 2 2 7 DAYS WITH PRECIPITATION >= 5 2 1 0 0 0 0 0 0 0 1 2 3 9 DAYS WITH PRECIPITATION >= 1 2 3 1 1 0 0 0 0 0 1 6 10 24 DAYS WITH PRECIPITATION 6 4 2 5 0 0 0 0 1 5 7 11 41 GREATEST DAILY PRECIPITATION 16.0 5.5 2.0 2.0 0.0 0.0 0.0 0.0 0.0 33.0 37.0 20.5 37.0 DAY 29 14 25 18 ** ** ** ** ** 4 6 11 DAY WITH THUNDER STORM 0 0 0 0 0 0 0 0 1 0 0 1 2 DAYS WITH SNOW OR SLEET 1 2 0 0 0 0 0 0 0 0 0 2 5 DAYS WITH DUST 0 0 2 1 4 1 0 0 0 0 0 0 8 WIND DIRECTION (PREVAILING) 90 90 90 90 90 90 90 90 90 90 90 90 90 PREVAILING WIND SPEED(KNOTS) 4.9 4.9 5.6 6.3 5.7 5.5 6.1 5.6 5.2 5.0 5.0 4.0 5.5 PREVAILING WIND PERCENT 12.3 10.3 16.1 27.3 18.7 22.7 28.4 24.5 22.0 13.5 16.7 15.5 19.0 CALMS PERCENT OF WIND 56.8 60.0 40.0 37.3 37.4 38.7 35.5 40.0 44.0 54.2 62.7 56.1 46.8 NO. OF WIND OBSERVATION 155 145 155 150 155 150 155 155 150 155 150 155 1830 VECTOR WIND DIRECTION (MEAN) 258 49 301 52 47 93 119 117 97 64 94 165 89 VECTOR WIND MAGNITUDE(KNOTS) 0.8 0.9 1.1 2.2 1.5 2.6 3.1 2.4 1.8 0.5 1.1 0.3 1.1 WIND STEADINESES (MEAN %) 22.9 36.0 17.5 44.9 33.3 65.0 77.5 68.6 52.9 16.7 55.0 11.1 29.7 WIND SPEED (MEAN KNOTS) 3.5 2.5 6.3 4.9 4.5 4.0 4.0 3.5 3.4 3.0 2.0 2.7 3.7 FASTEST WIND DIRECTION 280 250 240 270 270 180 180 220 270 250 10 240 240 FASTEST WIND SPEED (KNOTS) 27 16 43 31 29 12 14 16 31 19 12 19 43 DAY 27 25 24 10 1 3 1 7 30 17 6 11 DAYS WITH SKY CLEAR (0-2)/8 18 19 20 18 25 28 28 26 21 21 11 11 246 DAYS WITH P.CLOUDY (3-6)/8 6 6 8 9 4 2 3 5 8 6 9 10 76 DAYS WITH CLOUDY (7-8)/8 7 4 3 3 2 0 0 0 1 4 10 10 44 DAYS WITH VISIBILITY =< 2 KM 2 1 3 0 0 0 0 0 0 2 5 4 17 DURATION OF SUNSHINE HOURS 203.8 231.4 250.3 259.5 346.3 364.4 364.7 348.0 283.1 248.6 160.9 155.7 3216.7 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION NATANZ (99421) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 33 32 N LONGITUDE 51 54 E DATA PROCESSING CENTER ELEVATION 1684.9 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 830.3 830.9 829.9 831.4 829.5 828.1 829.3 830.1 830.8 834.6 835.4 833.0 831.1 MAX. QFE PRESSURE IN HPA 837.8 837.6 836.0 836.7 834.3 834.1 836.3 834.8 837.1 839.1 843.6 840.0 843.6 DAY-HOUR 31- 6 11- 6 27- 6 2- 6 4- 6 17- 6 30- 6 23- 6 29- 6 16- 6 17- 6 4- 6 MIN. QFE PRESSURE IN HPA 822.0 819.7 821.2 827.4 824.2 821.4 821.9 822.7 822.9 829.5 830.1 824.3 819.7 DAY-HOUR 21-12 7- 3 24-12 10-12 26-15 24-12 11-15 30-15 1-12 1-12 21-12 15- 9 MEAN QNH PRESSURE IN HPA 1017.4 1018.2 1016.9 1018.7 1016.4 1014.8 1016.2 1017.2 1018.0 1022.4 1023.5 1020.6 1018.4 MAX. QNH PRESSURE IN HPA 1026.2 1026.0 1024.1 1024.9 1022.1 1021.9 1024.5 1022.7 1025.4 1027.8 1033.1 1028.8 1033.1 DAY-HOUR 31- 6 11- 6 27- 6 2- 6 4- 6 17- 6 30- 6 23- 6 29- 6 16- 6 17- 6 4- 6 MIN. QNH PRESSURE IN HPA 1007.6 1004.9 1006.7 1014.0 1010.2 1006.9 1007.5 1008.4 1008.7 1016.5 1017.2 1010.3 1004.9 DAY-HOUR 21-12 7- 3 24-12 10-12 26-15 24-12 11-15 30-15 1-12 1-12 21-12 15- 9 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY-HOUR **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY-HOUR **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** PRESSURE AT HOUR 0000 UTC. MEAN QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** PRESSURE AT HOUR 0300 UTC. MEAN QFE PRESSURE IN HPA 830.4 830.9 830.1 831.6 830.3 828.7 829.8 830.6 831.2 834.7 835.3 832.9 831.4 MAX. QFE PRESSURE IN HPA 837.3 837.4 834.8 835.3 833.6 833.2 836.0 833.6 835.5 838.4 842.5 839.0 842.5 DAY 31 11 27 2 4 17 31 20 29 16 17 4 MIN. QFE PRESSURE IN HPA 823.4 819.7 823.9 828.1 827.1 823.9 824.1 824.4 824.0 830.1 830.3 825.5 819.7 DAY 21 7 2 21 27 26 11 31 1 1 22 15 MEAN QNH PRESSURE IN HPA 1017.5 1018.1 1017.2 1019.0 1017.4 1015.5 1016.8 1017.8 1018.4 1022.5 1023.3 1020.4 1018.7 MAX. QNH PRESSURE IN HPA 1025.7 1025.8 1022.7 1023.3 1021.3 1020.8 1024.1 1021.3 1023.5 1026.9 1031.8 1027.7 1031.8 DAY 31 11 27 2 4 17 31 20 29 16 17 4 MIN. QNH PRESSURE IN HPA 1009.3 1004.9 1009.9 1014.8 1013.6 1009.9 1010.1 1010.4 1010.0 1017.2 1017.4 1011.7 1004.9 DAY 21 7 2 21 27 26 11 31 1 1 22 15 MEAN QFF PRESSURE IN HPA 1019.3 1018.9 1014.4 1009.6 1004.3 1000.3 1000.4 1001.9 1004.8 1015.2 1021.8 1021.0 1011.0 MAX. QFF PRESSURE IN HPA 1028.6 1029.3 1022.5 1017.2 1009.0 1009.5 1009.2 1007.3 1012.4 1023.5 1031.5 1028.1 1031.5 DAY 31 11 1 2 11 14 31 20 30 5 17 29 MIN. QFF PRESSURE IN HPA 1008.6 1003.6 1003.4 1002.2 998.1 992.8 992.1 994.2 994.2 1005.1 1014.9 1012.3 992.1 DAY 21 7 24 21 27 24 11 31 1 1 3 15 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION NATANZ (99421) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 33 32 N LONGITUDE 51 54 E DATA PROCESSING CENTER ELEVATION 1684.9 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 831.5 831.9 831.0 832.6 830.8 829.3 830.3 831.4 832.1 835.6 836.3 833.7 832.2 MAX. QFE PRESSURE IN HPA 837.8 837.6 836.0 836.7 834.3 834.1 836.3 834.8 837.1 839.1 843.6 840.0 843.6 DAY 31 11 27 2 4 17 30 23 29 16 17 4 MIN. QFE PRESSURE IN HPA 823.6 819.9 823.7 828.8 827.3 824.1 824.3 825.7 825.2 831.1 831.6 825.2 819.9 DAY 21 7 2 22 20 26 11 31 1 1 6 11 MEAN QNH PRESSURE IN HPA 1018.8 1019.3 1018.2 1020.1 1018.0 1016.2 1017.4 1018.6 1019.5 1023.7 1024.5 1021.5 1019.6 MAX. QNH PRESSURE IN HPA 1026.2 1026.0 1024.1 1024.9 1022.1 1021.9 1024.5 1022.7 1025.4 1027.8 1033.1 1028.8 1033.1 DAY 31 11 27 2 4 17 30 23 29 16 17 4 MIN. QNH PRESSURE IN HPA 1009.5 1005.1 1009.6 1015.6 1013.9 1010.1 1010.3 1012.0 1011.4 1018.3 1018.9 1011.4 1005.1 DAY 21 7 2 22 20 26 11 31 1 1 6 11 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** PRESSURE AT HOUR 0900 UTC. MEAN QFE PRESSURE IN HPA 830.3 831.2 830.3 831.7 829.8 828.6 829.8 830.6 831.2 834.6 835.4 832.8 831.4 MAX. QFE PRESSURE IN HPA 836.6 837.1 835.0 835.8 833.5 833.5 835.9 834.3 836.8 838.0 842.8 839.1 842.8 DAY 31 11 27 2 5 17 30 23 29 16 17 4 MIN. QFE PRESSURE IN HPA 822.4 820.6 822.0 828.4 826.4 823.6 823.4 824.6 824.1 829.9 830.7 824.3 820.6 DAY 21 7 24 10 20 26 11 31 1 1 6 15 MEAN QNH PRESSURE IN HPA 1017.4 1018.5 1017.3 1019.0 1016.8 1015.4 1016.9 1017.8 1018.5 1022.4 1023.4 1020.4 1018.6 MAX. QNH PRESSURE IN HPA 1024.8 1025.4 1022.9 1023.9 1021.2 1021.2 1024.0 1022.1 1025.1 1026.5 1032.1 1027.8 1032.1 DAY 31 11 27 2 5 17 30 23 29 16 17 4 MIN. QNH PRESSURE IN HPA 1008.1 1006.0 1007.6 1015.2 1012.8 1009.5 1009.3 1010.7 1010.1 1016.9 1017.9 1010.3 1006.0 DAY 21 7 24 10 20 26 11 31 1 1 6 15 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** PRESSURE AT HOUR 1200 UTC. MEAN QFE PRESSURE IN HPA 829.4 830.1 828.8 830.4 828.3 827.2 828.6 829.2 829.9 833.8 834.8 832.4 830.2 MAX. QFE PRESSURE IN HPA 836.2 836.0 833.2 834.4 832.2 831.7 835.0 833.1 835.7 837.7 841.7 838.3 841.7 DAY 30 10 27 2 5 16 30 20 29 16 17 4 MIN. QFE PRESSURE IN HPA 822.0 821.2 821.2 827.4 824.9 821.4 822.2 823.1 822.9 829.5 830.1 824.3 821.2 DAY 21 7 24 10 26 24 11 31 1 1 21 15 MEAN QNH PRESSURE IN HPA 1016.4 1017.2 1015.6 1017.6 1015.1 1013.7 1015.3 1016.1 1016.9 1021.5 1022.7 1019.8 1017.3 MAX. QNH PRESSURE IN HPA 1024.4 1024.1 1020.8 1022.2 1019.6 1019.0 1022.9 1020.7 1023.8 1026.1 1030.8 1026.8 1030.8 DAY 30 10 27 2 5 16 30 20 29 16 17 4 MIN. QNH PRESSURE IN HPA 1007.6 1006.7 1006.7 1014.0 1011.0 1006.9 1007.8 1008.9 1008.7 1016.5 1017.2 1010.3 1006.7 DAY 21 7 24 10 26 24 11 31 1 1 21 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 NATANZ (99421) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 33 32 N LONGITUDE 51 54 E DATA PROCESSING CENTER ELEVATION 1684.9 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 830.0 830.6 829.3 830.6 828.3 826.8 828.2 828.9 829.9 834.3 835.4 833.1 830.5 MAX. QFE PRESSURE IN HPA 837.4 836.7 833.4 833.7 831.7 831.3 835.0 833.2 836.1 838.0 841.8 838.8 841.8 DAY 30 10 27 2 5 16 30 20 29 15 17 4 MIN. QFE PRESSURE IN HPA 823.1 822.8 821.2 827.7 824.2 821.4 821.9 822.7 823.5 830.1 830.6 825.8 821.2 DAY 21 7 24 10 26 24 11 30 1 1 21 15 MEAN QNH PRESSURE IN HPA 1017.0 1017.8 1016.2 1017.7 1015.0 1013.3 1014.9 1015.8 1017.0 1022.2 1023.5 1020.7 1017.6 MAX. QNH PRESSURE IN HPA 1025.8 1024.9 1021.1 1021.4 1019.0 1018.6 1022.9 1020.8 1024.2 1026.5 1031.0 1027.4 1031.0 DAY 30 10 27 2 5 16 30 20 29 15 17 4 MIN. QNH PRESSURE IN HPA 1008.9 1008.6 1006.7 1014.3 1010.2 1006.9 1007.5 1008.4 1009.4 1017.2 1017.8 1012.1 1006.7 DAY 21 7 24 10 26 24 11 30 1 1 21 15 MEAN QFF PRESSURE IN HPA 1018.8 1018.5 1013.2 1008.2 1001.7 998.0 998.7 999.8 1003.3 1014.8 1022.0 1021.2 1009.9 MAX. QFF PRESSURE IN HPA 1028.4 1028.8 1022.4 1015.0 1007.2 1007.6 1008.0 1006.9 1013.1 1021.7 1031.2 1027.6 1031.2 DAY 30 10 3 2 2 13 30 20 29 4 17 18 MIN. QFF PRESSURE IN HPA 1008.0 1009.2 997.0 1002.3 993.3 988.8 989.3 991.9 994.1 1005.8 1013.7 1012.5 988.8 DAY 6 7 24 10 26 24 11 30 1 1 2 11 PRESSURE AT HOUR 1800 UTC. MEAN QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** PRESSURE AT HOUR 2100 UTC. MEAN QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION NATANZ (99421) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 33 32 N LONGITUDE 51 54 E DATA PROCESSING CENTER ELEVATION 1684.9 M MEANS AND EXTREMES FOR THE YEAR 2001 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AIR TEMPERATURE (C) 2.6 5.9 12.6 19.5 23.4 27.9 28.8 29.7 24.8 19.1 11.2 7.2 17.7 MINIMUN AIR TEMPERATURE (C) -2.1 0.3 6.5 12.6 16.2 20.8 22.3 23.0 18.5 13.0 5.7 3.1 11.7 DAYS WITH MINIMUM TEMP. >=21 0 0 0 0 2 18 24 25 5 0 0 0 74 DAYS WITH MINIMUM TEMP. <=-4 6 1 0 0 0 0 0 0 0 0 1 0 8 DAYS WITH FREEZING MIN.<= 0 23 15 2 0 0 0 0 0 0 0 3 4 47 TEMPERATURE RECORDS LOWEST(C) -12.0 -4.8 -1.4 7.6 8.0 12.2 18.0 17.4 12.4 7.4 -4.5 -1.2 -12.0 DAY 28 1 12 14 4 13 19 12 22 28 20 22 MAXIMUM AIR TEMPERATURE (C) 5.8 9.4 16.1 23.6 27.3 31.6 32.9 33.3 28.6 23.0 14.7 10.4 21.4 DAYS WITH MAXIMUM TEMP. >=30 0 0 0 0 7 22 30 28 12 0 0 0 99 DAYS WITH MAXIMUM TEMP. <= 0 5 0 0 0 0 0 0 0 0 0 0 0 5 TEMPERATURE RECORDS HIGHEST(C) 13.8 16.0 24.0 27.0 33.4 37.4 39.2 36.2 33.2 28.5 22.6 18.0 39.2 DAY 15 28 31 4 15 28 10 21 5 6 7 29 DIF. BETWEEN (MAX.-MIN.) (C) 7.9 9.1 9.6 11.0 11.1 10.8 10.6 10.3 10.1 10.0 9.0 7.3 9.7 MEAN DAILY TEMP. (MDT) (C) 1.9 4.9 11.3 18.1 21.8 26.2 27.6 28.2 23.5 18.0 10.2 6.8 16.5 COOLING DEG. DAYS(BASE 21 0C) 0.0 0.0 0.0 1.0 55.0 165.4 204.2 221.8 88.9 2.1 0.0 0.0 738.6 HEATING DEG. DAYS(BASE 18 0C) 499.6 367.3 208.1 25.1 8.6 1.8 0.0 0.0 2.2 28.2 234.9 348.2 1724.0 DEWPOINT (MEAN C) -5.8 -6.1 -3.9 -4.3 -1.9 -0.3 3.7 -0.4 -0.9 0.6 -4.9 -0.6 -2.1 MIXING RATIO (G/KG) 3.10 3.04 3.60 3.49 4.30 4.84 6.29 4.77 4.40 4.88 3.39 4.61 4.23 VAPOUR PRESSURE (HPA) 4.13 4.04 4.78 4.64 5.69 6.38 8.28 6.32 5.85 6.50 4.51 6.13 5.60 SATURATION DEF. (HPA) 3.61 5.53 10.47 18.61 23.95 32.52 32.14 36.17 26.35 16.18 9.41 4.31 18.27 RELATIVE HUMIDITY (MEAN %) 58 45 36 21 22 19 22 16 20 31 36 62 32 RELATIVE HUMIDITY (MAX. %) 70 59 48 32 31 26 31 22 26 38 47 72 42 RELATIVE HUMIDITY (MIN. %) 49 36 28 15 16 15 16 12 15 25 28 53 26 RELATIVE HUMIDITY (MEAN% 03UTC) 63 54 46 31 30 26 31 21 26 38 43 65 40 RELATIVE HUMIDITY (MEAN% 09UTC) 53 41 32 19 19 17 20 15 17 27 31 59 29 RELATIVE HUMIDITY (MEAN% 15UTC) 66 47 35 20 20 17 17 14 19 31 39 67 33 RH=0 => RELATIVE HUMIDITY < 0.5% AMOUNT OF PRECIPITATION MM. 41.7 12.1 10.7 0.0 12.9 9.9 2.0 0.0 0.2 0.0 7.0 17.6 114.1 DAYS WITH PRECIPITATION >=10 2 0 0 0 1 0 0 0 0 0 0 0 3 DAYS WITH PRECIPITATION >= 5 3 2 1 0 1 1 0 0 0 0 1 1 10 DAYS WITH PRECIPITATION >= 1 6 2 3 0 2 3 1 0 0 0 1 5 23 DAYS WITH PRECIPITATION 7 4 5 0 4 5 1 1 1 0 3 7 38 GREATEST DAILY PRECIPITATION 20.0 6.0 7.0 0.0 11.0 6.0 2.0 0.0 0.2 0.0 7.0 5.0 20.0 DAY 27 19 10 ** 3 14 19 ** 20 ** 13 1 DAY WITH THUNDER STORM 0 1 0 0 1 1 0 0 0 0 0 0 3 DAYS WITH SNOW OR SLEET 7 1 0 0 0 0 0 0 0 0 0 0 8 DAYS WITH DUST 0 0 0 2 1 0 2 1 0 0 1 1 8 WIND DIRECTION (PREVAILING) 90 90 90 90 90 90 90 90 90 90 90 225 90 PREVAILING WIND SPEED(KNOTS) 4.9 6.4 6.2 6.7 6.1 6.2 5.8 6.1 5.6 6.3 5.6 11.6 6.0 PREVAILING WIND PERCENT 14.8 17.9 24.5 23.3 18.7 21.3 25.8 18.1 14.7 14.8 9.3 4.5 17.2 CALMS PERCENT OF WIND 51.0 43.6 36.8 26.7 29.7 32.0 30.3 41.9 55.3 56.8 63.3 83.9 46.0 NO. OF WIND OBSERVATION 155 140 155 150 155 150 155 155 150 155 150 155 1825 VECTOR WIND DIRECTION (MEAN) 106 70 82 29 298 88 114 103 96 89 273 270 90 VECTOR WIND MAGNITUDE(KNOTS) 0.7 0.5 1.7 1.0 1.3 2.9 2.9 1.7 1.7 1.2 0.3 0.9 0.9 WIND STEADINESES (MEAN %) 30.4 12.5 37.0 14.9 18.3 61.7 65.9 47.2 65.4 42.9 8.8 52.9 22.5 WIND SPEED (MEAN KNOTS) 2.3 4.0 4.6 6.7 7.1 4.7 4.4 3.6 2.6 2.8 3.4 1.7 4.0 FASTEST WIND DIRECTION 230 290 260 30 270 90 120 250 240 260 270 300 270 FASTEST WIND SPEED (KNOTS) 10 29 27 37 29 16 16 17 23 17 45 29 45 DAY 4 21 25 9 3 30 9 24 26 26 18 20 DAYS WITH SKY CLEAR (0-2)/8 14 19 17 16 18 26 29 25 27 22 16 13 242 DAYS WITH P.CLOUDY (3-6)/8 11 5 7 9 11 4 2 6 3 9 12 10 89 DAYS WITH CLOUDY (7-8)/8 6 4 7 5 2 0 0 0 0 0 2 8 34 DAYS WITH VISIBILITY =< 2 KM 5 0 0 1 1 0 0 0 0 0 0 5 12 DURATION OF SUNSHINE HOURS 192.8 209.7 250.6 275.6 311.5 354.0 358.3 337.0 293.6 277.5 215.9 154.8 3231.3 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION NATANZ (99421) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 33 32 N LONGITUDE 51 54 E DATA PROCESSING CENTER ELEVATION 1684.9 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 833.2 831.1 830.9 831.0 829.4 827.7 827.8 830.7 832.4 834.3 833.7 834.3 831.4 MAX. QFE PRESSURE IN HPA 836.8 839.6 839.2 838.6 833.8 835.0 834.5 835.1 838.5 841.8 840.9 839.6 841.8 DAY-HOUR 10- 6 10- 6 1- 6 2- 6 13- 6 2- 6 29- 6 5- 6 22- 6 10- 6 2- 6 28- 6 MIN. QFE PRESSURE IN HPA 828.0 818.0 819.6 824.4 823.4 821.6 821.5 825.0 826.8 829.2 820.3 826.6 818.0 DAY-HOUR 19-12 21-12 25-15 13-15 29-15 6-15 9-15 27-12 5-12 31-12 18-12 5-12 MEAN QNH PRESSURE IN HPA 1020.8 1018.3 1018.1 1018.2 1016.3 1014.3 1014.4 1017.9 1019.8 1022.1 1021.4 1022.2 1018.6 MAX. QNH PRESSURE IN HPA 1025.1 1028.4 1027.9 1027.2 1021.5 1022.9 1022.4 1023.1 1027.1 1031.0 1029.9 1028.4 1031.0 DAY-HOUR 10- 6 10- 6 1- 6 2- 6 13- 6 2- 6 29- 6 5- 6 22- 6 10- 6 2- 6 28- 6 MIN. QNH PRESSURE IN HPA 1014.7 1002.9 1004.8 1010.4 1009.3 1007.1 1007.0 1011.1 1013.3 1016.1 1005.6 1013.0 1002.9 DAY-HOUR 19-12 21-12 25-15 13-15 29-15 6-15 9-15 27-12 5-12 31-12 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 833.0 831.1 831.0 831.5 830.0 828.2 828.3 831.1 832.7 834.6 833.7 834.4 831.6 MAX. QFE PRESSURE IN HPA 836.1 838.8 838.1 838.5 833.8 834.2 833.7 834.3 837.6 840.6 839.0 838.1 840.6 DAY 10 10 1 2 17 2 29 5 22 10 2 28 MIN. QFE PRESSURE IN HPA 828.2 821.7 820.3 827.1 824.6 822.8 822.9 826.4 828.7 831.4 824.2 827.1 820.3 DAY 4 22 25 9 30 18 11 27 5 1 18 5 MEAN QNH PRESSURE IN HPA 1020.5 1018.3 1018.3 1018.9 1017.1 1014.9 1015.0 1018.3 1020.3 1022.4 1021.4 1022.2 1019.0 MAX. QNH PRESSURE IN HPA 1024.2 1027.4 1026.6 1027.1 1021.5 1022.0 1021.4 1022.1 1026.0 1029.5 1027.7 1026.6 1029.5 DAY 10 10 1 2 17 2 29 5 22 10 2 28 MIN. QNH PRESSURE IN HPA 1014.9 1007.3 1005.6 1013.6 1010.7 1008.6 1008.7 1012.8 1015.5 1018.7 1010.2 1013.6 1005.6 DAY 4 22 25 9 30 18 11 27 5 1 18 5 MEAN QFF PRESSURE IN HPA 1023.3 1018.4 1013.5 1009.4 1004.8 999.6 998.8 1002.0 1007.3 1013.4 1017.9 1021.2 1010.8 MAX. QFF PRESSURE IN HPA 1032.3 1028.1 1025.5 1018.2 1010.2 1009.9 1006.2 1008.3 1017.8 1021.5 1029.3 1027.6 1032.3 DAY 30 10 12 2 1 2 29 12 22 28 20 18 MIN. QFF PRESSURE IN HPA 1013.9 1004.1 997.6 1001.9 996.0 992.8 989.9 994.6 1000.0 1006.9 1003.4 1010.9 989.9 DAY 4 21 25 26 30 6 11 24 5 1 18 20 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION NATANZ (99421) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 33 32 N LONGITUDE 51 54 E DATA PROCESSING CENTER ELEVATION 1684.9 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 833.9 832.2 831.9 832.1 830.5 828.8 828.9 831.9 833.6 835.4 834.6 835.4 832.4 MAX. QFE PRESSURE IN HPA 836.8 839.6 839.2 838.6 833.8 835.0 834.5 835.1 838.5 841.8 840.9 839.6 841.8 DAY 10 10 1 2 13 2 29 5 22 10 2 28 MIN. QFE PRESSURE IN HPA 830.0 821.8 821.9 826.5 825.3 823.6 823.9 826.9 829.6 832.2 824.7 828.0 821.8 DAY 4 21 25 9 30 18 18 27 5 1 18 5 MEAN QNH PRESSURE IN HPA 1021.7 1019.6 1019.3 1019.5 1017.7 1015.7 1015.7 1019.2 1021.3 1023.5 1022.5 1023.4 1019.9 MAX. QNH PRESSURE IN HPA 1025.1 1028.4 1027.9 1027.2 1021.5 1022.9 1022.4 1023.1 1027.1 1031.0 1029.9 1028.4 1031.0 DAY 10 10 1 2 13 2 29 5 22 10 2 28 MIN. QNH PRESSURE IN HPA 1017.0 1007.4 1007.5 1012.9 1011.5 1009.5 1009.9 1013.4 1016.6 1019.6 1010.8 1014.7 1007.4 DAY 4 21 25 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 0900 UTC. MEAN QFE PRESSURE IN HPA 833.3 831.3 831.2 831.4 829.7 828.2 828.3 831.2 832.8 834.4 833.7 834.3 831.6 MAX. QFE PRESSURE IN HPA 835.8 839.3 839.1 837.9 833.1 834.4 833.8 834.8 838.3 841.3 840.1 839.1 841.3 DAY 17 9 1 1 13 2 29 14 22 10 2 9 MIN. QFE PRESSURE IN HPA 829.2 819.3 820.6 825.6 824.1 823.1 823.0 826.2 828.1 830.6 821.9 827.4 819.3 DAY 4 21 25 13 30 18 18 27 5 31 18 5 MEAN QNH PRESSURE IN HPA 1020.9 1018.6 1018.5 1018.7 1016.6 1014.9 1015.0 1018.5 1020.3 1022.3 1021.4 1022.2 1019.0 MAX. QNH PRESSURE IN HPA 1023.9 1028.0 1027.8 1026.4 1020.7 1022.2 1021.5 1022.7 1026.8 1030.4 1029.0 1027.8 1030.4 DAY 17 9 1 1 13 2 29 14 22 10 2 9 MIN. QNH PRESSURE IN HPA 1016.1 1004.4 1006.0 1011.9 1010.1 1008.9 1008.8 1012.6 1014.8 1017.8 1007.5 1014.0 1004.4 DAY 4 21 25 13 30 18 18 27 5 31 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 832.5 830.2 830.0 830.0 828.3 826.8 826.9 829.8 831.4 833.3 832.9 833.5 830.5 MAX. QFE PRESSURE IN HPA 835.2 838.6 837.8 836.7 831.3 832.6 832.2 833.6 836.8 840.2 838.9 838.1 840.2 DAY 9 9 1 2 16 2 29 14 22 10 2 9 MIN. QFE PRESSURE IN HPA 828.0 818.0 820.1 824.5 823.8 821.8 821.8 825.0 826.8 829.2 820.3 826.6 818.0 DAY 19 21 25 13 9 17 10 27 5 31 18 5 MEAN QNH PRESSURE IN HPA 1020.0 1017.3 1017.0 1017.0 1015.1 1013.3 1013.4 1016.9 1018.7 1020.9 1020.5 1021.2 1017.6 MAX. QNH PRESSURE IN HPA 1023.2 1027.2 1026.2 1024.9 1018.6 1020.1 1019.6 1021.3 1025.1 1029.1 1027.5 1026.6 1029.1 DAY 9 9 1 2 16 2 29 14 22 10 2 9 MIN. QNH PRESSURE IN HPA 1014.7 1002.9 1005.4 1010.6 1009.7 1007.4 1007.4 1011.1 1013.3 1016.1 1005.6 1013.0 1002.9 DAY 19 21 25 13 9 17 10 27 5 31 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 NATANZ (99421) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 33 32 N LONGITUDE 51 54 E DATA PROCESSING CENTER ELEVATION 1684.9 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 833.2 830.7 830.2 829.9 828.4 826.5 826.6 829.6 831.4 833.7 833.7 834.2 830.7 MAX. QFE PRESSURE IN HPA 836.0 839.0 838.3 836.8 832.2 832.0 831.7 833.3 836.8 840.3 839.4 838.6 840.3 DAY 9 9 1 1 16 2 28 14 22 10 4 9 MIN. QFE PRESSURE IN HPA 829.0 819.0 819.6 824.4 823.4 821.6 821.5 825.3 826.8 829.4 820.7 827.2 819.0 DAY 19 21 25 13 29 6 9 27 5 31 18 5 MEAN QNH PRESSURE IN HPA 1020.8 1017.8 1017.3 1017.0 1015.1 1012.9 1013.0 1016.6 1018.7 1021.4 1021.4 1022.0 1017.8 MAX. QNH PRESSURE IN HPA 1024.1 1027.7 1026.8 1025.1 1019.6 1019.4 1019.0 1020.9 1025.1 1029.2 1028.1 1027.2 1029.2 DAY 9 9 1 1 16 2 28 14 22 10 4 9 MIN. QNH PRESSURE IN HPA 1015.9 1004.1 1004.8 1010.4 1009.3 1007.1 1007.0 1011.5 1013.3 1016.3 1006.1 1013.7 1004.1 DAY 19 21 25 13 29 6 9 27 5 31 18 5 MEAN QFF PRESSURE IN HPA 1023.5 1017.7 1012.4 1007.4 1002.7 997.5 996.8 1000.3 1005.8 1012.3 1018.0 1020.7 1009.6 MAX. QFF PRESSURE IN HPA 1032.3 1028.2 1026.0 1015.7 1008.1 1007.6 1004.4 1006.4 1016.1 1021.3 1029.4 1027.6 1032.3 DAY 28 9 11 1 5 12 29 14 22 10 20 22 MIN. QFF PRESSURE IN HPA 1016.3 1001.2 999.4 999.9 994.2 989.8 988.0 993.2 997.8 1006.4 999.9 1010.4 988.0 DAY 4 21 25 26 29 6 9 24 5 6 18 20 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 NATANZ (99421) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 33 32 N LONGITUDE 51 54 E DATA PROCESSING CENTER ELEVATION 1684.9 M MEANS AND EXTREMES FOR THE YEAR 2002 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AIR TEMPERATURE (C) 3.1 7.6 12.2 14.9 22.0 26.8 28.9 30.1 27.1 21.3 9.9 3.2 17.3 MINIMUN AIR TEMPERATURE (C) -1.3 1.8 5.4 9.4 15.2 19.4 21.7 23.2 20.4 15.6 5.8 -1.1 11.3 DAYS WITH MINIMUM TEMP. >=21 0 0 0 0 0 9 19 27 11 0 0 0 66 DAYS WITH MINIMUM TEMP. <=-4 9 0 0 0 0 0 0 0 0 0 0 7 16 DAYS WITH FREEZING MIN.<= 0 21 11 3 0 0 0 0 0 0 0 1 19 55 TEMPERATURE RECORDS LOWEST(C) -7.8 -3.5 -0.6 2.8 8.4 14.8 19.0 18.6 15.2 9.4 -1.4 -5.4 -7.8 DAY 14 5 7 4 5 7 9 14 26 23 30 24 MAXIMUM AIR TEMPERATURE (C) 6.3 11.4 16.5 18.7 26.0 30.6 33.0 34.0 30.8 24.7 12.7 6.2 20.9 DAYS WITH MAXIMUM TEMP. >=30 0 0 0 0 9 17 28 29 24 0 0 0 107 DAYS WITH MAXIMUM TEMP. <= 0 1 0 0 0 0 0 0 0 0 0 0 1 2 TEMPERATURE RECORDS HIGHEST(C) 15.7 19.0 24.2 29.4 33.4 35.4 37.5 37.8 34.4 28.4 22.0 12.8 37.8 DAY 7 25 27 28 29 18 17 10 11 3 12 8 DIF. BETWEEN (MAX.-MIN.) (C) 7.6 9.6 11.1 9.3 10.8 11.2 11.3 10.8 10.4 9.1 6.9 7.3 9.6 MEAN DAILY TEMP. (MDT) (C) 2.5 6.6 11.0 14.1 20.6 25.0 27.4 28.6 25.6 20.1 9.3 2.6 16.1 COOLING DEG. DAYS(BASE 21 0C) 0.0 0.0 0.0 1.5 43.5 119.8 197.1 234.8 138.4 25.0 0.0 0.0 760.2 HEATING DEG. DAYS(BASE 18 0C) 480.9 319.8 218.8 129.0 21.0 0.0 0.0 0.0 0.0 15.2 262.1 478.7 1925.6 DEWPOINT (MEAN C) -5.6 -7.9 -6.6 1.7 1.6 1.3 2.7 1.9 -2.6 -2.0 0.2 -5.5 -1.7 MIXING RATIO (G/KG) 3.18 2.66 3.12 5.48 5.29 5.16 5.79 5.56 3.92 4.04 4.82 3.30 4.36 VAPOUR PRESSURE (HPA) 4.23 3.54 4.14 7.23 7.00 6.82 7.64 7.33 5.21 5.39 6.42 4.38 5.78 SATURATION DEF. (HPA) 3.80 7.41 10.67 10.65 20.44 29.25 33.07 36.17 31.29 20.55 6.28 3.55 17.76 RELATIVE HUMIDITY (MEAN %) 56 36 31 47 28 20 21 18 15 22 55 57 34 RELATIVE HUMIDITY (MAX. %) 68 46 45 62 38 28 31 25 20 28 67 70 44 RELATIVE HUMIDITY (MIN. %) 45 28 20 35 23 15 15 14 11 18 47 46 26 RELATIVE HUMIDITY (MEAN% 03UTC) 62 44 41 57 37 28 31 25 20 27 62 66 42 RELATIVE HUMIDITY (MEAN% 09UTC) 51 32 24 44 26 18 18 17 13 19 50 51 30 RELATIVE HUMIDITY (MEAN% 15UTC) 62 37 31 46 26 17 16 15 15 24 61 59 34 RH=0 => RELATIVE HUMIDITY < 0.5% AMOUNT OF PRECIPITATION MM. 58.4 5.6 14.0 131.2 2.0 0.0 0.0 0.0 0.0 0.6 43.3 8.2 263.3 DAYS WITH PRECIPITATION >=10 2 0 0 4 0 0 0 0 0 0 2 0 8 DAYS WITH PRECIPITATION >= 5 4 1 1 6 0 0 0 0 0 0 4 0 16 DAYS WITH PRECIPITATION >= 1 4 1 4 6 1 0 0 0 0 0 7 3 26 DAYS WITH PRECIPITATION 6 2 7 13 2 0 0 0 0 1 10 6 47 GREATEST DAILY PRECIPITATION 33.0 5.0 6.0 50.0 2.0 0.0 0.0 0.0 0.0 0.6 14.6 3.0 50.0 DAY 8 20 28 3 3 ** ** ** ** 22 16 10 DAY WITH THUNDER STORM 0 0 0 1 0 0 0 0 0 0 1 0 2 DAYS WITH SNOW OR SLEET 2 1 0 0 0 0 0 0 0 0 1 0 4 DAYS WITH DUST 0 1 2 1 1 0 1 0 0 0 0 0 6 WIND DIRECTION (PREVAILING) 90 45 90 90 90 135 135 135 90 90 90 135 90 PREVAILING WIND SPEED(KNOTS) 5.2 6.6 6.4 5.8 5.5 5.7 6.8 6.2 4.9 6.0 5.1 4.4 5.8 PREVAILING WIND PERCENT 8.4 10.0 16.1 12.0 18.1 13.3 14.8 16.1 14.7 18.7 11.3 9.0 12.8 CALMS PERCENT OF WIND 71.6 55.7 44.5 46.7 34.2 49.3 49.0 40.0 50.0 55.5 65.3 63.9 52.1 NO. OF WIND OBSERVATION 155 140 155 150 155 150 155 155 150 155 150 155 1825 VECTOR WIND DIRECTION (MEAN) 97 318 258 304 44 91 138 121 93 84 72 260 102 VECTOR WIND MAGNITUDE(KNOTS) 0.2 0.3 0.9 1.0 1.2 0.8 2.5 1.9 1.1 0.9 0.9 0.6 0.5 WIND STEADINESES (MEAN %) 10.5 8.6 18.4 22.2 25.0 22.2 65.8 48.7 39.3 33.3 47.4 21.4 14.7 WIND SPEED (MEAN KNOTS) 1.9 3.5 4.9 4.5 4.8 3.6 3.8 3.9 2.8 2.7 1.9 2.8 3.4 FASTEST WIND DIRECTION 250 270 250 250 300 250 180 180 260 270 270 250 250 FASTEST WIND SPEED (KNOTS) 23 25 25 27 29 23 17 17 16 16 12 35 35 DAY 7 27 20 20 24 5 12 1 11 21 1 21 DAYS WITH SKY CLEAR (0-2)/8 13 18 16 7 19 26 27 28 25 22 10 12 223 DAYS WITH P.CLOUDY (3-6)/8 13 7 12 13 11 4 4 3 5 8 13 14 107 DAYS WITH CLOUDY (7-8)/8 5 3 3 10 1 0 0 0 0 1 7 5 35 DAYS WITH VISIBILITY =< 2 KM 1 1 0 4 0 0 0 0 0 0 2 3 11 DURATION OF SUNSHINE HOURS 188.7 233.0 254.5 194.0 334.2 358.2 359.1 356.7 321.3 282.6 179.8 178.1 3240.2 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION NATANZ (99421) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 33 32 N LONGITUDE 51 54 E DATA PROCESSING CENTER ELEVATION 1684.9 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 832.2 832.1 831.0 829.0 829.9 828.8 829.1 828.3 833.0 835.0 835.3 831.7 831.3 MAX. QFE PRESSURE IN HPA 839.0 841.4 841.6 837.1 834.9 835.7 834.4 834.0 838.3 840.9 843.0 841.2 843.0 DAY-HOUR 26- 6 6- 6 11- 6 1- 6 17- 6 25- 6 29- 6 31- 6 21- 6 10- 6 18- 6 3- 6 MIN. QFE PRESSURE IN HPA 824.5 823.1 822.6 818.2 825.1 821.4 821.8 822.8 828.2 829.4 828.5 819.9 818.2 DAY-HOUR 8-12 25-12 28-12 3-12 12-15 20-15 24-15 17-12 10-15 21-15 12-12 21-12 MEAN QNH PRESSURE IN HPA 1019.6 1019.6 1018.3 1015.8 1016.9 1015.6 1016.0 1015.0 1020.6 1022.9 1023.3 1019.1 1018.6 MAX. QNH PRESSURE IN HPA 1027.7 1030.5 1030.7 1025.4 1022.8 1023.8 1022.2 1021.8 1026.8 1029.9 1032.4 1030.3 1032.4 DAY-HOUR 26- 6 6- 6 11- 6 1- 6 17- 6 25- 6 29- 6 31- 6 21- 6 10- 6 18- 6 3- 6 MIN. QNH PRESSURE IN HPA 1010.6 1008.9 1008.3 1003.1 1011.3 1006.9 1007.4 1008.6 1014.9 1016.3 1015.3 1005.1 1003.1 DAY-HOUR 8-12 25-12 28-12 3-12 12-15 20-15 24-15 17-12 10-15 21-15 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 832.0 832.1 831.3 829.2 830.3 829.4 829.7 828.6 833.2 835.2 835.3 831.6 831.5 MAX. QFE PRESSURE IN HPA 838.2 840.0 841.1 835.8 834.4 835.2 834.1 832.8 837.5 839.8 841.8 839.6 841.8 DAY 26 6 11 1 17 25 30 31 22 10 18 3 MIN. QFE PRESSURE IN HPA 824.6 825.5 825.3 820.9 826.6 823.9 825.6 824.5 829.5 831.5 830.2 821.9 820.9 DAY 8 25 29 4 13 19 25 17 18 30 13 22 MEAN QNH PRESSURE IN HPA 1019.4 1019.6 1018.6 1016.1 1017.4 1016.3 1016.7 1015.4 1020.8 1023.2 1023.4 1018.9 1018.8 MAX. QNH PRESSURE IN HPA 1026.7 1028.8 1030.1 1023.9 1022.2 1023.2 1021.9 1020.3 1025.9 1028.6 1031.0 1028.4 1031.0 DAY 26 6 11 1 17 25 30 31 22 10 18 3 MIN. QNH PRESSURE IN HPA 1010.7 1011.7 1011.5 1006.3 1013.0 1009.9 1011.9 1010.6 1016.5 1018.8 1017.3 1007.5 1006.3 DAY 8 25 29 4 13 19 25 17 18 30 13 22 MEAN QFF PRESSURE IN HPA 1021.4 1018.5 1014.3 1009.2 1005.8 1001.6 1000.6 998.7 1006.6 1012.8 1020.3 1020.8 1010.9 MAX. QFF PRESSURE IN HPA 1031.0 1029.2 1028.7 1020.5 1011.5 1010.6 1008.3 1005.6 1011.8 1016.9 1031.2 1031.2 1031.2 DAY 25 5 11 1 14 25 30 31 30 26 18 5 MIN. QFF PRESSURE IN HPA 1006.3 1006.5 1003.3 1002.2 998.7 992.9 994.2 992.5 1001.4 1008.2 1009.2 1006.0 992.5 DAY 8 27 28 29 20 19 25 7 11 14 12 22 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION NATANZ (99421) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 33 32 N LONGITUDE 51 54 E DATA PROCESSING CENTER ELEVATION 1684.9 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 833.0 833.1 832.1 829.8 830.9 829.9 830.3 829.4 834.1 836.1 836.3 832.6 832.3 MAX. QFE PRESSURE IN HPA 839.0 841.4 841.6 837.1 834.9 835.7 834.4 834.0 838.3 840.9 843.0 841.2 843.0 DAY 26 6 11 1 17 25 29 31 21 10 18 3 MIN. QFE PRESSURE IN HPA 825.9 825.7 826.0 820.8 827.0 824.3 825.6 824.9 830.2 832.6 830.2 822.0 820.8 DAY 8 25 22 4 13 20 24 17 10 30 13 21 MEAN QNH PRESSURE IN HPA 1020.6 1020.7 1019.5 1016.8 1018.1 1017.0 1017.4 1016.4 1021.9 1024.3 1024.5 1020.2 1019.8 MAX. QNH PRESSURE IN HPA 1027.7 1030.5 1030.7 1025.4 1022.8 1023.8 1022.2 1021.8 1026.8 1029.9 1032.4 1030.3 1032.4 DAY 26 6 11 1 17 25 29 31 21 10 18 3 MIN. QNH PRESSURE IN HPA 1012.2 1012.0 1012.3 1006.2 1013.5 1010.3 1011.9 1011.0 1017.3 1020.1 1017.3 1007.6 1006.2 DAY 8 25 22 4 13 20 24 17 10 30 13 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 832.3 832.5 831.4 829.3 830.3 829.3 829.7 828.7 833.4 835.1 835.3 831.8 831.6 MAX. QFE PRESSURE IN HPA 838.6 840.3 841.3 836.8 834.7 835.3 833.4 833.2 837.7 840.0 842.3 840.6 842.3 DAY 27 6 11 1 17 25 29 31 21 10 18 3 MIN. QFE PRESSURE IN HPA 825.5 824.5 824.5 820.5 826.7 823.2 824.6 824.3 829.8 831.3 829.1 821.3 820.5 DAY 8 25 22 3 20 20 24 17 10 21 12 21 MEAN QNH PRESSURE IN HPA 1019.7 1019.9 1018.7 1016.2 1017.4 1016.2 1016.7 1015.5 1021.1 1023.0 1023.3 1019.1 1018.9 MAX. QNH PRESSURE IN HPA 1027.2 1029.2 1030.4 1025.1 1022.6 1023.3 1021.1 1020.8 1026.1 1028.8 1031.5 1029.5 1031.5 DAY 27 6 11 1 17 25 29 31 21 10 18 3 MIN. QNH PRESSURE IN HPA 1011.7 1010.6 1010.6 1005.8 1013.2 1009.0 1010.7 1010.3 1016.8 1018.6 1016.0 1006.8 1005.8 DAY 8 25 22 3 20 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 831.4 831.2 830.1 828.3 829.1 827.8 828.2 827.4 832.2 834.1 834.6 831.1 830.4 MAX. QFE PRESSURE IN HPA 838.3 839.1 839.4 835.3 833.3 833.3 832.1 831.6 836.1 839.2 841.4 839.8 841.4 DAY 27 6 11 1 17 25 29 31 21 10 18 3 MIN. QFE PRESSURE IN HPA 824.5 823.1 822.6 818.2 825.3 821.7 822.9 822.8 828.7 830.3 828.5 819.9 818.2 DAY 8 25 28 3 12 20 24 17 10 21 12 21 MEAN QNH PRESSURE IN HPA 1018.7 1018.5 1017.1 1015.0 1016.0 1014.5 1014.9 1013.9 1019.6 1021.9 1022.4 1018.3 1017.6 MAX. QNH PRESSURE IN HPA 1026.8 1027.8 1028.1 1023.3 1020.9 1020.9 1019.5 1018.9 1024.2 1027.9 1030.5 1028.6 1030.5 DAY 27 6 11 1 17 25 29 31 21 10 18 3 MIN. QNH PRESSURE IN HPA 1010.6 1008.9 1008.3 1003.1 1011.5 1007.3 1008.7 1008.6 1015.5 1017.4 1015.3 1005.1 1003.1 DAY 8 25 28 3 12 20 24 17 10 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 NATANZ (99421) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 33 32 N LONGITUDE 51 54 E DATA PROCESSING CENTER ELEVATION 1684.9 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 832.1 831.7 830.3 828.5 829.0 827.4 827.8 827.2 832.2 834.4 835.1 831.7 830.6 MAX. QFE PRESSURE IN HPA 838.5 839.1 839.3 835.0 833.3 832.9 832.2 831.6 836.2 839.4 841.8 840.2 841.8 DAY 27 6 10 1 17 24 29 31 29 10 18 3 MIN. QFE PRESSURE IN HPA 826.5 824.8 823.0 820.2 825.1 821.4 821.8 822.8 828.2 829.4 829.7 819.9 819.9 DAY 7 25 22 3 12 20 24 17 10 21 13 21 MEAN QNH PRESSURE IN HPA 1019.5 1019.1 1017.4 1015.2 1015.9 1014.0 1014.5 1013.8 1019.6 1022.3 1023.0 1019.1 1017.8 MAX. QNH PRESSURE IN HPA 1027.1 1027.8 1028.0 1022.9 1020.9 1020.5 1019.6 1018.9 1024.4 1028.1 1031.0 1029.1 1031.0 DAY 27 6 10 1 17 24 29 31 29 10 18 3 MIN. QNH PRESSURE IN HPA 1012.9 1010.9 1008.8 1005.5 1011.3 1006.9 1007.4 1008.6 1014.9 1016.3 1016.7 1005.1 1005.1 DAY 7 25 22 3 12 20 24 17 10 21 13 21 MEAN QFF PRESSURE IN HPA 1021.5 1018.0 1013.1 1008.2 1004.1 999.2 998.5 997.1 1005.3 1011.8 1020.0 1020.9 1009.8 MAX. QFF PRESSURE IN HPA 1032.1 1028.6 1026.9 1017.4 1009.6 1007.7 1005.5 1004.7 1011.5 1016.4 1031.0 1030.8 1032.1 DAY 14 4 10 1 2 25 29 31 30 31 18 5 MIN. QFF PRESSURE IN HPA 1007.7 1005.9 1002.4 1001.2 997.4 990.8 990.7 990.5 999.6 1006.0 1009.4 1003.9 990.5 DAY 7 25 28 3 29 19 24 8 11 21 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 NATANZ (99421) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 33 32 N LONGITUDE 51 54 E DATA PROCESSING CENTER ELEVATION 1684.9 M MEANS AND EXTREMES FOR THE YEAR 2003 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AIR TEMPERATURE (C) 4.6 5.8 9.0 16.1 20.1 26.6 30.6 27.3 22.9 19.6 9.1 4.0 16.3 MINIMUN AIR TEMPERATURE (C) -0.1 0.4 3.0 10.6 13.1 19.7 25.3 21.5 17.6 14.9 3.7 0.3 10.8 DAYS WITH MINIMUM TEMP. >=21 0 0 0 0 0 12 30 17 3 0 0 0 62 DAYS WITH MINIMUM TEMP. <=-4 5 1 3 0 0 0 0 0 0 0 0 5 14 DAYS WITH FREEZING MIN.<= 0 17 12 5 0 0 0 0 0 0 0 7 15 56 TEMPERATURE RECORDS LOWEST(C) -8.6 -6.2 -8.5 1.2 5.0 13.2 20.6 18.6 12.6 11.8 -3.0 -8.0 -8.6 DAY 20 18 1 18 1 7 1 31 28 28 24 12 MAXIMUM AIR TEMPERATURE (C) 7.8 9.5 12.8 19.8 23.9 30.8 35.7 32.7 28.3 24.3 12.5 6.8 20.4 DAYS WITH MAXIMUM TEMP. >=30 0 0 0 0 0 19 31 31 12 0 0 0 93 DAYS WITH MAXIMUM TEMP. <= 0 4 1 0 0 0 0 0 0 0 0 0 2 7 TEMPERATURE RECORDS HIGHEST(C) 18.2 16.0 20.6 28.2 28.4 36.4 39.6 35.8 33.0 29.0 20.4 17.4 39.6 DAY 12 3 25 6 22 23 17 6 7 3 11 19 DIF. BETWEEN (MAX.-MIN.) (C) 7.9 9.1 9.8 9.2 10.8 11.1 10.4 11.2 10.7 9.4 8.8 6.5 9.6 MEAN DAILY TEMP. (MDT) (C) 3.8 5.0 7.9 15.2 18.5 25.3 30.5 27.1 22.9 19.6 8.1 3.5 15.6 COOLING DEG. DAYS(BASE 21 0C) 0.0 0.0 0.0 5.2 6.9 131.3 294.1 189.0 74.9 8.8 0.0 0.0 710.3 HEATING DEG. DAYS(BASE 18 0C) 439.1 364.8 314.1 111.5 30.8 0.0 0.0 0.0 0.0 2.3 296.2 448.1 2006.9 DEWPOINT (MEAN C) -6.0 -5.8 -5.0 1.4 -0.9 1.7 2.7 0.4 -1.0 -2.8 -5.1 -3.0 -2.0 MIXING RATIO (G/KG) 3.10 3.16 3.37 5.34 4.57 5.33 5.83 4.91 4.48 3.84 3.30 3.91 4.26 VAPOUR PRESSURE (HPA) 4.12 4.19 4.46 7.07 6.07 7.03 7.67 6.50 5.95 5.12 4.40 5.21 5.65 SATURATION DEF. (HPA) 4.85 5.38 7.50 12.19 18.13 28.61 37.06 30.54 22.76 18.16 7.65 3.31 16.34 RELATIVE HUMIDITY (MEAN %) 54 48 40 43 27 21 18 19 23 23 39 65 35 RELATIVE HUMIDITY (MAX. %) 62 61 59 59 38 30 25 26 30 30 51 74 45 RELATIVE HUMIDITY (MIN. %) 47 36 28 34 19 15 13 13 16 17 31 57 27 RELATIVE HUMIDITY (MEAN% 03UTC) 57 57 55 53 38 30 24 25 28 27 49 71 43 RELATIVE HUMIDITY (MEAN% 09UTC) 50 43 38 39 23 19 17 16 19 19 33 60 31 RELATIVE HUMIDITY (MEAN% 15UTC) 59 46 36 45 22 17 14 14 20 23 40 70 34 RH=0 => RELATIVE HUMIDITY < 0.5% AMOUNT OF PRECIPITATION MM. 56.6 17.9 36.2 39.7 8.5 0.0 0.0 0.0 0.0 0.0 10.3 44.6 213.8 DAYS WITH PRECIPITATION >=10 2 0 1 2 0 0 0 0 0 0 0 1 6 DAYS WITH PRECIPITATION >= 5 5 1 3 3 1 0 0 0 0 0 1 4 18 DAYS WITH PRECIPITATION >= 1 6 4 8 5 2 0 0 0 0 0 2 8 35 DAYS WITH PRECIPITATION 7 9 8 10 3 0 0 0 0 0 2 12 51 GREATEST DAILY PRECIPITATION 24.0 7.0 16.0 13.0 6.0 0.0 0.0 0.0 0.0 0.0 7.0 13.0 24.0 DAY 19 25 26 23 30 ** ** ** ** ** 29 4 DAY WITH THUNDER STORM 0 0 1 2 3 1 0 0 0 0 0 0 7 DAYS WITH SNOW OR SLEET 3 2 0 0 0 0 0 0 0 0 0 4 9 DAYS WITH DUST 0 0 2 0 0 0 0 0 0 1 0 0 3 WIND DIRECTION (PREVAILING) 135 90 90 270 90 45 45 90 315 315 90 135 90 PREVAILING WIND SPEED(KNOTS) 4.6 6.3 5.8 12.7 7.3 7.5 7.5 6.7 5.5 7.2 5.0 5.3 6.3 PREVAILING WIND PERCENT 6.5 14.3 14.2 12.7 16.1 16.5 14.9 12.1 12.5 13.7 13.1 7.7 11.0 CALMS PERCENT OF WIND 67.7 46.4 49.7 48.0 51.6 48.3 44.8 50.0 51.3 48.4 63.4 66.5 52.4 NO. OF WIND OBSERVATION 155 140 155 150 155 176 248 248 240 248 175 155 2245 VECTOR WIND DIRECTION (MEAN) 256 310 250 313 89 78 91 135 136 291 57 105 63 VECTOR WIND MAGNITUDE(KNOTS) 0.7 1.0 1.3 1.0 1.8 2.0 1.2 1.0 0.3 1.4 0.3 0.2 0.2 WIND STEADINESES (MEAN %) 29.2 19.6 27.1 21.7 48.6 50.0 30.0 32.3 11.1 35.9 14.3 7.7 5.6 WIND SPEED (MEAN KNOTS) 2.4 5.1 4.8 4.6 3.7 4.0 4.0 3.1 2.7 3.9 2.1 2.6 3.6 FASTEST WIND DIRECTION 260 270 270 270 270 30 270 240 320 270 290 260 270 FASTEST WIND SPEED (KNOTS) 29 39 35 29 23 19 19 16 12 27 23 19 39 DAY 28 4 19 27 8 4 17 27 7 29 11 6 DAYS WITH SKY CLEAR (0-2)/8 15 12 13 9 16 26 26 31 30 22 19 13 232 DAYS WITH P.CLOUDY (3-6)/8 5 13 13 6 12 2 5 0 0 9 7 7 79 DAYS WITH CLOUDY (7-8)/8 11 3 5 15 3 2 0 0 0 0 4 11 54 DAYS WITH VISIBILITY =< 2 KM 4 3 0 2 0 0 0 0 0 0 2 9 20 DURATION OF SUNSHINE HOURS 175.6 201.9 227.7 189.6 294.5 339.3 341.5 366.0 322.3 261.6 221.8 153.0 3094.8 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION NATANZ (99421) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 33 32 N LONGITUDE 51 54 E DATA PROCESSING CENTER ELEVATION 1684.9 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 832.1 828.5 829.6 831.4 832.3 827.8 825.9 830.5 832.0 834.5 834.9 834.7 831.2 MAX. QFE PRESSURE IN HPA 838.9 835.1 838.6 838.0 838.3 833.3 832.8 834.4 838.6 840.1 843.9 842.5 843.9 DAY-HOUR 8- 6 6- 6 2- 6 8- 3 2- 6 3- 6 3- 6 30- 6 27- 6 15- 6 25- 6 12- 6 MIN. QFE PRESSURE IN HPA 818.0 817.2 816.9 826.3 827.4 820.6 821.2 825.4 826.7 829.2 827.7 824.9 816.9 DAY-HOUR 28-12 20-12 26-12 20-15 23-12 30-15 1- 0 1- 0 7-12 27-12 14-12 6-12 MEAN QNH PRESSURE IN HPA 1019.5 1015.3 1016.6 1018.7 1019.7 1014.5 1012.2 1017.7 1019.4 1022.3 1022.9 1022.6 1018.4 MAX. QNH PRESSURE IN HPA 1027.5 1023.1 1027.2 1026.5 1026.8 1020.9 1020.3 1022.2 1027.2 1029.0 1033.4 1031.8 1033.4 DAY-HOUR 8- 6 6- 6 2- 6 8- 3 2- 6 3- 6 3- 6 30- 6 27- 6 15- 6 25- 6 12- 6 MIN. QNH PRESSURE IN HPA 1002.9 1001.9 1001.6 1012.7 1014.0 1006.0 1006.7 1011.6 1013.2 1016.1 1014.3 1011.0 1001.6 DAY-HOUR 28-12 20-12 26-12 20-15 23-12 30-15 1- 0 1- 0 7-12 27-12 14-12 6-12 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** 994.0 1001.7 1006.3 1011.4 ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** 1003.8 1007.6 1016.7 1018.7 ****** ****** ****** DAY-HOUR **-** **-** **-** **-** **-** **-** 3- 6 3-18 27- 6 15- 3 **-** **-** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** 989.1 994.0 997.1 1004.8 ****** ****** ****** DAY-HOUR **-** **-** **-** **-** **-** **-** 18-15 1- 0 7-15 27-12 **-** **-** PRESSURE AT HOUR 0000 UTC. MEAN QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** 825.4 830.2 831.8 834.2 ****** ****** ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** 831.0 833.6 837.6 838.2 ****** ****** ****** DAY ** ** ** ** ** ** 4 4 27 15 ** ** MIN. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** 821.2 825.4 827.3 830.2 ****** ****** ****** DAY ** ** ** ** ** ** 1 1 7 29 ** ** MEAN QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** 1011.6 1017.3 1019.1 1022.0 ****** ****** ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** 1018.2 1021.3 1026.0 1026.7 ****** ****** ****** DAY ** ** ** ** ** ** 4 4 27 15 ** ** MIN. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** 1006.7 1011.6 1013.9 1017.3 ****** ****** ****** DAY ** ** ** ** ** ** 1 1 7 29 ** ** MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** 993.2 1001.0 1005.7 1010.8 ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** 1001.2 1005.8 1016.1 1016.0 ****** ****** ****** DAY ** ** ** ** ** ** 3 31 27 24 ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** 989.2 994.0 998.1 1005.1 ****** ****** ****** DAY ** ** ** ** ** ** 25 1 8 2 ** ** PRESSURE AT HOUR 0300 UTC. MEAN QFE PRESSURE IN HPA 832.0 828.5 829.7 831.4 832.7 828.7 826.1 830.7 832.2 834.6 834.9 834.5 831.3 MAX. QFE PRESSURE IN HPA 838.4 834.2 837.0 838.0 837.3 832.5 832.1 833.6 838.1 839.2 842.0 841.6 842.0 DAY 8 7 2 8 2 2 4 30 27 15 25 12 MIN. QFE PRESSURE IN HPA 824.3 817.9 821.5 826.7 828.4 822.2 822.5 826.2 827.3 830.6 829.9 827.5 817.9 DAY 29 19 13 14 29 30 1 1 7 27 14 6 MEAN QNH PRESSURE IN HPA 1019.4 1015.3 1016.6 1018.7 1020.2 1015.5 1012.5 1017.9 1019.7 1022.5 1022.8 1022.3 1018.6 MAX. QNH PRESSURE IN HPA 1026.9 1022.0 1025.3 1026.5 1025.7 1020.0 1019.5 1021.3 1026.6 1027.9 1031.2 1030.7 1031.2 DAY 8 7 2 8 2 2 4 30 27 15 25 12 MIN. QNH PRESSURE IN HPA 1010.3 1002.8 1007.0 1013.2 1015.2 1007.8 1008.2 1012.6 1013.9 1017.8 1016.9 1014.1 1002.8 DAY 29 19 13 14 29 30 1 1 7 27 14 6 MEAN QFF PRESSURE IN HPA 1020.3 1014.8 1014.2 1011.2 1010.1 1000.8 994.4 1002.4 1007.0 1012.3 1020.8 1023.4 1011.0 MAX. QFF PRESSURE IN HPA 1027.0 1022.7 1030.5 1017.5 1020.2 1008.1 1003.2 1006.6 1016.7 1018.7 1034.0 1038.9 1038.9 DAY 23 7 2 30 2 7 4 30 27 15 25 12 MIN. QFF PRESSURE IN HPA 1009.3 1004.5 1002.1 1002.0 1002.9 990.7 990.5 995.4 998.5 1006.3 1012.0 1009.7 990.5 DAY 16 20 21 28 23 30 25 1 7 2 1 19 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION NATANZ (99421) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 33 32 N LONGITUDE 51 54 E DATA PROCESSING CENTER ELEVATION 1684.9 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 832.9 829.5 830.7 832.2 833.2 829.4 826.9 831.5 833.1 835.6 835.9 835.6 832.2 MAX. QFE PRESSURE IN HPA 838.9 835.1 838.6 837.9 838.3 833.3 832.8 834.4 838.6 840.1 843.9 842.5 843.9 DAY 8 6 2 8 2 3 3 30 27 15 25 12 MIN. QFE PRESSURE IN HPA 824.5 818.1 822.6 826.8 828.8 823.1 823.2 827.7 828.2 831.4 830.5 826.3 818.1 DAY 28 19 13 14 29 30 1 1 7 27 14 6 MEAN QNH PRESSURE IN HPA 1020.5 1016.4 1017.8 1019.7 1020.8 1016.3 1013.4 1018.9 1020.7 1023.6 1024.0 1023.7 1019.7 MAX. QNH PRESSURE IN HPA 1027.5 1023.1 1027.2 1026.4 1026.8 1020.9 1020.3 1022.2 1027.2 1029.0 1033.4 1031.8 1033.4 DAY 8 6 2 8 2 3 3 30 27 15 25 12 MIN. QNH PRESSURE IN HPA 1010.6 1003.0 1008.3 1013.3 1015.6 1008.9 1009.0 1014.3 1014.9 1018.7 1017.6 1012.7 1003.0 DAY 28 19 13 14 29 30 1 1 7 27 14 6 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** 995.5 1002.8 1007.6 1012.6 ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** 1003.8 1007.3 1016.7 1018.1 ****** ****** ****** DAY ** ** ** ** ** ** 3 30 27 15 ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** 990.9 997.1 999.9 1007.5 ****** ****** ****** DAY ** ** ** ** ** ** 30 1 7 27 ** ** PRESSURE AT HOUR 0900 UTC. MEAN QFE PRESSURE IN HPA 832.2 829.0 830.1 831.8 832.7 828.9 826.6 831.1 832.6 834.8 835.1 834.8 831.6 MAX. QFE PRESSURE IN HPA 838.2 834.9 838.6 837.2 837.9 832.8 832.5 834.2 838.2 839.8 843.2 841.4 843.2 DAY 12 12 2 8 2 3 3 30 27 15 25 12 MIN. QFE PRESSURE IN HPA 821.7 818.4 821.1 826.8 827.8 822.7 823.0 827.7 827.9 830.7 828.8 825.5 818.4 DAY 28 19 26 14 8 30 1 1 7 27 14 6 MEAN QNH PRESSURE IN HPA 1019.6 1015.8 1017.1 1019.2 1020.2 1015.7 1013.1 1018.3 1020.1 1022.8 1023.0 1022.7 1019.0 MAX. QNH PRESSURE IN HPA 1026.7 1022.8 1027.2 1025.5 1026.4 1020.3 1020.0 1022.0 1026.7 1028.6 1032.6 1030.5 1032.6 DAY 12 12 2 8 2 3 3 30 27 15 25 12 MIN. QNH PRESSURE IN HPA 1007.3 1003.4 1006.6 1013.3 1014.4 1008.4 1008.8 1014.3 1014.6 1017.9 1015.6 1011.7 1003.4 DAY 28 19 26 14 8 30 1 1 7 27 14 6 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** 994.8 1002.1 1006.8 1011.6 ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** 1003.4 1006.7 1016.1 1017.4 ****** ****** ****** DAY ** ** ** ** ** ** 3 30 27 15 ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** 990.5 996.5 998.8 1007.0 ****** ****** ****** DAY ** ** ** ** ** ** 30 1 7 26 ** ** PRESSURE AT HOUR 1200 UTC. MEAN QFE PRESSURE IN HPA 831.3 827.6 828.6 830.7 831.6 827.5 825.3 829.8 831.2 833.7 834.2 834.0 830.5 MAX. QFE PRESSURE IN HPA 837.3 834.0 838.1 837.2 836.5 831.5 831.0 832.4 836.9 838.7 842.5 839.6 842.5 DAY 11 12 2 8 2 3 3 11 27 15 25 12 MIN. QFE PRESSURE IN HPA 818.0 817.2 816.9 826.8 827.4 821.2 821.9 827.0 826.7 829.2 827.7 824.9 816.9 DAY 28 20 26 14 23 30 25 1 7 27 14 6 MEAN QNH PRESSURE IN HPA 1018.6 1014.2 1015.4 1017.9 1018.9 1014.1 1011.5 1016.8 1018.5 1021.4 1022.0 1021.8 1017.6 MAX. QNH PRESSURE IN HPA 1025.7 1021.8 1026.6 1025.5 1024.7 1018.8 1018.2 1019.9 1025.2 1027.3 1031.8 1028.4 1031.8 DAY 11 12 2 8 2 3 3 11 27 15 25 12 MIN. QNH PRESSURE IN HPA 1002.9 1001.9 1001.6 1013.3 1014.0 1006.7 1007.5 1013.5 1013.2 1016.1 1014.3 1011.0 1001.6 DAY 28 20 26 14 23 30 25 1 7 27 14 6 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** 993.1 1000.5 1005.1 1010.2 ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** 1001.4 1004.2 1015.0 1016.4 ****** ****** ****** DAY ** ** ** ** ** ** 3 30 27 15 ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** 989.6 995.8 997.2 1004.8 ****** ****** ****** DAY ** ** ** ** ** ** 30 1 7 27 ** ** ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION NATANZ (99421) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 33 32 N LONGITUDE 51 54 E DATA PROCESSING CENTER ELEVATION 1684.9 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 832.0 828.1 829.0 830.9 831.4 827.1 824.8 829.4 831.1 833.9 834.8 834.8 830.6 MAX. QFE PRESSURE IN HPA 837.9 834.6 838.1 836.8 836.3 831.9 830.2 832.1 836.8 838.7 842.9 841.5 842.9 DAY 11 6 2 8 2 3 3 30 26 15 25 11 MIN. QFE PRESSURE IN HPA 819.0 818.4 819.3 826.3 827.4 820.6 821.4 826.8 826.7 829.5 828.4 826.6 818.4 DAY 28 20 26 20 23 30 24 1 7 27 14 6 MEAN QNH PRESSURE IN HPA 1019.4 1014.8 1015.9 1018.1 1018.7 1013.6 1010.9 1016.3 1018.4 1021.7 1022.8 1022.7 1017.8 MAX. QNH PRESSURE IN HPA 1026.4 1022.5 1026.6 1025.1 1024.5 1019.3 1017.3 1019.5 1025.1 1027.3 1032.3 1030.6 1032.3 DAY 11 6 2 8 2 3 3 30 26 15 25 11 MIN. QNH PRESSURE IN HPA 1004.1 1003.4 1004.4 1012.7 1014.0 1006.0 1006.9 1013.3 1013.2 1016.5 1015.2 1013.0 1003.4 DAY 28 20 26 20 23 30 24 1 7 27 14 6 MEAN QFF PRESSURE IN HPA 1020.3 1014.4 1013.3 1010.4 1008.5 998.9 992.9 1000.8 1005.6 1011.4 1020.9 1023.7 1010.1 MAX. QFF PRESSURE IN HPA 1026.2 1023.4 1031.7 1016.8 1019.5 1006.7 1000.6 1005.7 1015.7 1017.7 1034.5 1037.5 1037.5 DAY 22 12 2 18 1 3 3 30 26 15 25 12 MIN. QFF PRESSURE IN HPA 1003.4 998.2 997.5 1001.9 1001.9 989.9 989.1 996.0 997.1 1005.2 1011.7 1011.0 989.1 DAY 28 20 26 27 23 30 18 1 7 2 1 19 PRESSURE AT HOUR 1800 UTC. MEAN QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** 825.9 830.7 832.2 834.6 ****** ****** ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** 831.0 833.8 837.8 839.2 ****** ****** ****** DAY ** ** ** ** ** ** 3 3 26 15 ** ** MIN. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** 822.3 827.8 828.1 830.2 ****** ****** ****** DAY ** ** ** ** ** ** 25 1 6 27 ** ** MEAN QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** 1012.2 1017.8 1019.6 1022.5 ****** ****** ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** 1018.2 1021.5 1026.2 1027.9 ****** ****** ****** DAY ** ** ** ** ** ** 3 3 26 15 ** ** MIN. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** 1008.0 1014.4 1014.8 1017.3 ****** ****** ****** DAY ** ** ** ** ** ** 25 1 6 27 ** ** MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** 994.3 1001.9 1006.5 1011.5 ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** 1000.7 1007.6 1016.2 1017.1 ****** ****** ****** DAY ** ** ** ** ** ** 3 3 26 15 ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** 989.9 997.2 999.4 1006.0 ****** ****** ****** DAY ** ** ** ** ** ** 24 1 7 27 ** ** PRESSURE AT HOUR 2100 UTC. MEAN QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** 826.0 830.8 832.0 834.5 ****** ****** ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** 831.0 834.3 837.6 839.0 ****** ****** ****** DAY ** ** ** ** ** ** 3 3 22 15 ** ** MIN. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** 822.4 828.3 827.6 830.9 ****** ****** ****** DAY ** ** ** ** ** ** 30 6 6 25 ** ** MEAN QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** 1012.3 1018.0 1019.4 1022.4 ****** ****** ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** 1018.2 1022.1 1026.0 1027.7 ****** ****** ****** DAY ** ** ** ** ** ** 3 3 22 15 ** ** MIN. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** 1008.1 1015.0 1014.2 1018.1 ****** ****** ****** DAY ** ** ** ** ** ** 30 6 6 25 ** ** MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** 994.0 1001.9 1006.1 1011.3 ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** 1000.7 1007.2 1015.8 1016.3 ****** ****** ****** DAY ** ** ** ** ** ** 2 30 26 15 ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** 989.6 996.8 998.8 1006.6 ****** ****** ****** DAY ** ** ** ** ** ** 24 6 6 1 ** ** ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION NATANZ (99421) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 33 32 N LONGITUDE 51 54 E DATA PROCESSING CENTER ELEVATION 1684.9 M MEANS AND EXTREMES FOR THE YEAR 2004 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AIR TEMPERATURE (C) 4.3 8.2 12.6 13.8 20.8 27.6 28.1 29.9 24.7 18.7 11.3 2.7 16.9 MINIMUN AIR TEMPERATURE (C) 0.0 1.9 7.1 9.0 14.3 20.9 21.8 23.1 18.7 12.5 6.1 -1.7 11.1 DAYS WITH MINIMUM TEMP. >=21 0 0 0 0 1 15 22 27 10 0 0 0 75 DAYS WITH MINIMUM TEMP. <=-4 0 1 0 0 0 0 0 0 0 0 1 5 7 DAYS WITH FREEZING MIN.<= 0 18 12 4 0 0 0 0 0 0 0 6 24 64 TEMPERATURE RECORDS LOWEST(C) -3.6 -4.6 -3.0 1.8 8.2 16.0 15.0 18.6 14.2 8.0 -4.4 -5.6 -5.6 DAY 1 24 16 18 14 1 13 28 29 29 29 3 MAXIMUM AIR TEMPERATURE (C) 7.4 12.0 15.9 18.1 25.3 31.7 32.3 34.3 28.3 22.0 14.7 6.0 20.7 DAYS WITH MAXIMUM TEMP. >=30 0 0 0 0 0 24 26 31 13 0 0 0 94 DAYS WITH MAXIMUM TEMP. <= 0 0 0 1 0 0 0 0 0 0 0 0 0 1 TEMPERATURE RECORDS HIGHEST(C) 13.0 21.2 25.2 26.0 29.6 35.2 36.0 36.8 34.0 27.0 20.4 14.6 36.8 DAY 24 14 7 22 28 25 27 8 3 11 1 31 DIF. BETWEEN (MAX.-MIN.) (C) 7.4 10.1 8.8 9.1 11.0 10.8 10.5 11.2 9.6 9.5 8.6 7.7 9.6 MEAN DAILY TEMP. (MDT) (C) 3.7 7.0 11.5 13.6 19.8 26.3 27.0 28.7 23.5 17.2 10.4 2.2 15.9 COOLING DEG. DAYS(BASE 21 0C) 0.0 0.0 0.0 0.0 20.5 158.3 188.1 238.3 86.6 2.7 0.0 0.0 694.5 HEATING DEG. DAYS(BASE 18 0C) 442.6 320.1 204.8 137.7 17.7 0.0 0.0 0.0 0.0 49.2 227.7 491.0 1890.8 DEWPOINT (MEAN C) -2.2 -6.3 -2.8 0.0 2.3 1.0 3.8 1.8 -1.1 -0.8 -0.3 -4.8 -0.8 MIXING RATIO (G/KG) 4.06 2.98 3.84 4.80 5.62 5.07 6.28 5.45 4.40 4.45 4.81 3.40 4.60 VAPOUR PRESSURE (HPA) 5.38 3.97 5.11 6.36 7.43 6.71 8.29 7.19 5.86 5.94 6.39 4.52 6.09 SATURATION DEF. (HPA) 3.07 7.36 10.69 10.05 18.00 31.03 30.63 36.01 26.34 16.16 7.52 3.10 16.66 RELATIVE HUMIDITY (MEAN %) 65 38 42 43 33 19 23 18 20 29 47 62 37 RELATIVE HUMIDITY (MAX. %) 78 50 51 60 46 27 32 25 27 37 60 75 47 RELATIVE HUMIDITY (MIN. %) 53 28 35 32 23 14 18 14 16 23 38 49 29 RELATIVE HUMIDITY (MEAN% 03UTC) 71 46 48 53 45 26 32 24 26 36 57 70 45 RELATIVE HUMIDITY (MEAN% 09UTC) 60 34 40 40 28 17 21 16 18 25 41 54 33 RELATIVE HUMIDITY (MEAN% 15UTC) 72 38 41 40 29 16 19 14 19 29 53 69 37 RH=0 => RELATIVE HUMIDITY < 0.5% AMOUNT OF PRECIPITATION MM. 40.6 8.9 32.7 36.6 15.2 0.0 0.0 0.0 0.0 0.0 11.5 37.2 182.7 DAYS WITH PRECIPITATION >=10 0 0 1 2 1 0 0 0 0 0 0 1 5 DAYS WITH PRECIPITATION >= 5 4 0 3 2 1 0 0 0 0 0 0 3 13 DAYS WITH PRECIPITATION >= 1 7 4 7 7 3 0 0 0 0 0 3 7 38 DAYS WITH PRECIPITATION 10 4 8 9 4 0 1 0 0 0 9 9 54 GREATEST DAILY PRECIPITATION 9.8 4.0 10.0 11.0 11.0 0.0 0.0 0.0 0.0 0.0 4.0 14.0 14.0 DAY 13 7 15 4 4 ** ** ** ** ** 9 9 DAY WITH THUNDER STORM 1 0 1 1 1 0 0 0 0 0 0 0 4 DAYS WITH SNOW OR SLEET 2 1 2 0 0 0 0 0 0 0 0 5 10 DAYS WITH DUST 0 1 0 1 1 0 0 0 0 0 0 0 3 WIND DIRECTION (PREVAILING) 135 135 90 90 90 45 180 135 135 135 90 225 135 PREVAILING WIND SPEED(KNOTS) 6.0 5.7 6.6 6.4 7.5 6.9 5.9 7.2 5.7 5.6 5.8 10.4 6.2 PREVAILING WIND PERCENT 7.7 13.8 12.3 11.4 18.1 14.7 14.2 18.7 14.0 19.4 7.3 4.5 10.2 CALMS PERCENT OF WIND 66.5 48.3 52.3 43.8 40.6 47.3 52.9 47.7 44.7 54.8 70.7 76.1 53.5 NO. OF WIND OBSERVATION 155 145 155 210 155 150 155 155 150 155 150 155 1890 VECTOR WIND DIRECTION (MEAN) 179 260 18 275 61 102 150 155 133 88 285 186 140 VECTOR WIND MAGNITUDE(KNOTS) 0.1 1.7 0.5 0.8 0.6 2.2 1.5 2.4 1.5 1.1 0.7 0.1 0.5 WIND STEADINESES (MEAN %) 4.3 32.1 13.5 17.0 11.8 55.0 46.9 63.2 40.5 35.5 25.9 6.3 13.9 WIND SPEED (MEAN KNOTS) 2.3 5.3 3.7 4.7 5.1 4.0 3.2 3.8 3.7 3.1 2.7 1.6 3.6 FASTEST WIND DIRECTION 260 240 300 250 220 130 270 270 250 340 280 240 240 FASTEST WIND SPEED (KNOTS) 39 45 27 29 29 29 16 16 16 29 35 19 45 DAY 13 23 13 4 13 30 12 26 3 22 23 12 DAYS WITH SKY CLEAR (0-2)/8 15 19 7 6 18 21 19 23 28 25 14 14 209 DAYS WITH P.CLOUDY (3-6)/8 10 7 16 15 13 8 12 8 2 6 11 12 120 DAYS WITH CLOUDY (7-8)/8 6 3 8 9 0 1 0 0 0 0 5 5 37 DAYS WITH VISIBILITY =< 2 KM 6 0 2 1 1 0 0 0 0 0 0 5 15 DURATION OF SUNSHINE HOURS 179.4 241.1 176.0 215.4 297.9 291.4 265.6 339.0 311.8 281.3 192.8 180.6 2972.3 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION NATANZ (99421) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 33 32 N LONGITUDE 51 54 E DATA PROCESSING CENTER ELEVATION 1684.9 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 829.9 831.4 833.0 830.3 829.6 829.2 829.3 829.0 833.8 836.6 833.7 832.6 831.5 MAX. QFE PRESSURE IN HPA 835.9 837.8 840.1 836.3 834.5 836.2 834.8 833.8 838.9 841.5 838.7 842.1 842.1 DAY-HOUR 12- 6 10- 6 9- 6 11- 6 22-12 6- 6 18- 6 18- 6 25- 6 27- 6 1- 6 3- 6 MIN. QFE PRESSURE IN HPA 822.4 822.9 823.1 819.5 818.0 823.0 823.2 823.6 828.7 831.0 823.2 825.2 818.0 DAY-HOUR 23-15 15-12 31-15 17-12 13-12 17-15 10-12 4-15 11-15 21-12 23-12 16-12 MEAN QNH PRESSURE IN HPA 1016.9 1018.7 1020.6 1017.4 1016.6 1016.1 1016.2 1015.8 1021.6 1024.8 1021.4 1020.1 1018.9 MAX. QNH PRESSURE IN HPA 1024.0 1026.2 1029.0 1024.5 1022.4 1024.4 1022.7 1021.5 1027.5 1030.6 1027.3 1031.3 1031.3 DAY-HOUR 12- 6 10- 6 9- 6 11- 6 22-12 6- 6 18- 6 18- 6 25- 6 27- 6 1- 6 3- 6 MIN. QNH PRESSURE IN HPA 1008.1 1008.7 1008.9 1004.7 1002.9 1008.8 1009.0 1009.5 1015.5 1018.2 1009.0 1011.4 1002.9 DAY-HOUR 23-15 15-12 31-15 17-12 13-12 17-15 10-12 4-15 11-15 21-12 23-12 16-12 MEAN QFF PRESSURE IN HPA ****** ****** ****** 1010.2 ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** 1018.2 ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY-HOUR **-** **-** **-** 8- 6 **-** **-** **-** **-** **-** **-** **-** **-** MIN. QFF PRESSURE IN HPA ****** ****** ****** 996.3 ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY-HOUR **-** **-** **-** 17- 3 **-** **-** **-** **-** **-** **-** **-** **-** PRESSURE AT HOUR 0000 UTC. MEAN QFE PRESSURE IN HPA ****** ****** ****** 829.7 ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** 834.7 ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** 11 ** ** ** ** ** ** ** ** MIN. QFE PRESSURE IN HPA ****** ****** ****** 821.0 ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** 17 ** ** ** ** ** ** ** ** MEAN QNH PRESSURE IN HPA ****** ****** ****** 1016.7 ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** 1022.6 ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** 11 ** ** ** ** ** ** ** ** MIN. QNH PRESSURE IN HPA ****** ****** ****** 1006.4 ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** 17 ** ** ** ** ** ** ** ** MEAN QFF PRESSURE IN HPA ****** ****** ****** 1009.4 ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** 1016.7 ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** 11 ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** 996.4 ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** 17 ** ** ** ** ** ** ** ** PRESSURE AT HOUR 0300 UTC. MEAN QFE PRESSURE IN HPA 829.8 831.4 833.1 830.5 830.2 829.8 829.6 829.4 834.0 836.6 833.7 832.5 831.7 MAX. QFE PRESSURE IN HPA 835.2 836.4 838.6 835.4 834.0 835.3 834.2 832.6 838.3 840.2 838.0 841.5 841.5 DAY 1 10 9 28 18 6 18 30 27 27 1 4 MIN. QFE PRESSURE IN HPA 823.1 825.2 826.8 820.5 821.9 825.6 825.3 824.9 829.6 831.7 823.6 825.9 820.5 DAY 27 2 31 17 13 17 11 4 12 22 23 16 MEAN QNH PRESSURE IN HPA 1016.8 1018.6 1020.6 1017.6 1017.2 1016.8 1016.6 1016.3 1021.8 1024.8 1021.4 1019.9 1019.0 MAX. QNH PRESSURE IN HPA 1023.2 1024.6 1027.2 1023.4 1021.8 1023.3 1022.0 1020.1 1026.8 1029.1 1026.5 1030.6 1030.6 DAY 1 10 9 28 18 6 18 30 27 27 1 4 MIN. QNH PRESSURE IN HPA 1008.9 1011.4 1013.3 1005.8 1007.5 1011.9 1011.5 1011.0 1016.6 1019.0 1009.5 1012.2 1005.8 DAY 27 2 31 17 13 17 11 4 12 22 23 16 MEAN QFF PRESSURE IN HPA 1017.5 1017.1 1015.7 1010.9 1006.5 1001.5 1000.9 999.7 1008.8 1016.1 1017.7 1022.4 1011.2 MAX. QFF PRESSURE IN HPA 1027.3 1024.1 1025.6 1017.8 1012.6 1009.9 1007.5 1005.4 1016.4 1022.8 1028.9 1035.8 1035.8 DAY 1 10 22 11 18 6 18 31 30 27 29 4 MIN. QFF PRESSURE IN HPA 1008.6 1003.5 1004.7 996.3 994.1 996.0 995.2 994.0 1000.9 1008.2 1002.3 1011.8 994.0 DAY 27 15 31 17 13 18 10 4 12 22 23 16 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION NATANZ (99421) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 33 32 N LONGITUDE 51 54 E DATA PROCESSING CENTER ELEVATION 1684.9 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 830.8 832.4 834.0 831.1 830.5 830.3 830.3 830.0 835.1 837.7 834.7 833.5 832.5 MAX. QFE PRESSURE IN HPA 835.9 837.8 840.1 836.3 834.4 836.2 834.8 833.8 838.9 841.5 838.7 842.1 842.1 DAY 12 10 9 11 18 6 18 18 25 27 1 3 MIN. QFE PRESSURE IN HPA 824.3 826.2 826.8 820.5 821.9 826.0 825.7 825.3 831.1 832.8 824.8 826.6 820.5 DAY 27 15 31 17 13 17 10 4 12 21 23 16 MEAN QNH PRESSURE IN HPA 1018.0 1019.9 1021.8 1018.3 1017.7 1017.4 1017.4 1017.1 1023.0 1026.2 1022.6 1021.2 1020.1 MAX. QNH PRESSURE IN HPA 1024.0 1026.2 1029.0 1024.5 1022.2 1024.4 1022.7 1021.5 1027.5 1030.6 1027.3 1031.3 1031.3 DAY 12 10 9 11 18 6 18 18 25 27 1 3 MIN. QNH PRESSURE IN HPA 1010.3 1012.6 1013.3 1005.8 1007.5 1012.3 1012.0 1011.5 1018.3 1020.3 1010.9 1013.0 1005.8 DAY 27 15 31 17 13 17 10 4 12 21 23 16 MEAN QFF PRESSURE IN HPA ****** ****** ****** 1011.1 ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** 1018.2 ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** 8 ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** 999.0 ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** 17 ** ** ** ** ** ** ** ** PRESSURE AT HOUR 0900 UTC. MEAN QFE PRESSURE IN HPA 830.1 831.8 833.5 830.8 829.9 829.8 829.8 829.6 834.3 836.8 833.7 832.7 831.9 MAX. QFE PRESSURE IN HPA 835.9 837.7 839.2 836.1 833.6 835.6 834.7 833.4 838.4 840.7 837.9 841.8 841.8 DAY 12 10 9 12 27 6 18 18 27 27 1 3 MIN. QFE PRESSURE IN HPA 823.7 824.5 825.4 821.5 819.9 825.9 824.5 824.8 830.3 831.7 824.5 825.5 819.9 DAY 23 15 31 17 13 17 10 4 11 21 23 16 MEAN QNH PRESSURE IN HPA 1017.1 1019.2 1021.2 1018.0 1016.9 1016.8 1016.8 1016.6 1022.1 1025.1 1021.4 1020.3 1019.3 MAX. QNH PRESSURE IN HPA 1024.0 1026.1 1027.9 1024.2 1021.3 1023.7 1022.6 1021.1 1026.9 1029.7 1026.4 1031.0 1031.0 DAY 12 10 9 12 27 6 18 18 27 27 1 3 MIN. QNH PRESSURE IN HPA 1009.6 1010.6 1011.6 1007.0 1005.1 1012.2 1010.6 1010.9 1017.4 1019.0 1010.6 1011.7 1005.1 DAY 23 15 31 17 13 17 10 4 11 21 23 16 MEAN QFF PRESSURE IN HPA ****** ****** ****** 1010.5 ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** 1017.5 ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** 11 ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** 1003.0 ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** 17 ** ** ** ** ** ** ** ** PRESSURE AT HOUR 1200 UTC. MEAN QFE PRESSURE IN HPA 829.2 830.6 832.2 829.6 828.7 828.4 828.6 828.2 832.9 835.7 832.9 831.8 830.7 MAX. QFE PRESSURE IN HPA 834.6 836.3 837.7 835.0 834.5 834.2 833.4 832.1 837.5 839.6 836.7 840.9 840.9 DAY 12 10 9 11 22 6 18 30 27 27 1 3 MIN. QFE PRESSURE IN HPA 822.6 822.9 823.7 819.5 818.0 823.6 823.2 823.8 829.0 831.0 823.2 825.2 818.0 DAY 23 15 31 17 13 17 10 4 11 21 23 16 MEAN QNH PRESSURE IN HPA 1016.0 1017.7 1019.6 1016.6 1015.6 1015.1 1015.4 1014.9 1020.5 1023.8 1020.5 1019.2 1017.9 MAX. QNH PRESSURE IN HPA 1022.5 1024.5 1026.1 1022.9 1022.4 1022.0 1021.1 1019.5 1025.9 1028.4 1024.9 1029.9 1029.9 DAY 12 10 9 11 22 6 18 30 27 27 1 3 MIN. QNH PRESSURE IN HPA 1008.3 1008.7 1009.6 1004.7 1002.9 1009.5 1009.0 1009.7 1015.9 1018.2 1009.0 1011.4 1002.9 DAY 23 15 31 17 13 17 10 4 11 21 23 16 MEAN QFF PRESSURE IN HPA ****** ****** ****** 1009.0 ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** 1016.9 ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** 11 ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** 997.6 ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** 17 ** ** ** ** ** ** ** ** ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION NATANZ (99421) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 33 32 N LONGITUDE 51 54 E DATA PROCESSING CENTER ELEVATION 1684.9 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 829.9 830.9 832.4 829.7 828.9 827.9 828.1 827.8 832.9 836.1 833.6 832.4 830.9 MAX. QFE PRESSURE IN HPA 835.4 836.3 837.9 834.8 834.5 833.1 832.6 831.9 837.3 839.8 837.2 841.5 841.5 DAY 11 10 23 11 22 6 18 30 26 27 1 3 MIN. QFE PRESSURE IN HPA 822.4 822.9 823.1 821.1 818.9 823.0 823.4 823.6 828.7 831.4 824.2 826.1 818.9 DAY 23 15 31 17 13 17 10 4 11 21 23 15 MEAN QNH PRESSURE IN HPA 1016.9 1018.1 1019.9 1016.7 1015.7 1014.5 1014.8 1014.5 1020.5 1024.3 1021.2 1019.9 1018.1 MAX. QNH PRESSURE IN HPA 1023.4 1024.5 1026.4 1022.7 1022.4 1020.7 1020.1 1019.3 1025.7 1028.6 1025.5 1030.6 1030.6 DAY 11 10 23 11 22 6 18 30 26 27 1 3 MIN. QNH PRESSURE IN HPA 1008.1 1008.7 1008.9 1006.6 1004.0 1008.8 1009.3 1009.5 1015.5 1018.7 1010.2 1012.4 1004.0 DAY 23 15 31 17 13 17 10 4 11 21 23 15 MEAN QFF PRESSURE IN HPA 1017.5 1016.3 1014.8 1009.9 1004.9 999.2 999.1 997.9 1007.5 1015.6 1017.6 1022.2 1010.2 MAX. QFF PRESSURE IN HPA 1024.1 1025.0 1024.7 1017.2 1012.6 1007.1 1006.0 1004.5 1015.4 1022.6 1028.2 1035.5 1035.5 DAY 12 8 22 11 4 6 18 30 30 27 29 3 MIN. QFF PRESSURE IN HPA 1006.9 1002.4 1000.7 1000.6 991.2 993.3 993.3 992.2 999.1 1008.7 1003.2 1011.7 991.2 DAY 23 15 31 16 13 17 10 4 11 3 23 15 PRESSURE AT HOUR 1800 UTC. MEAN QFE PRESSURE IN HPA ****** ****** ****** 830.5 ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** 835.4 ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** 10 ** ** ** ** ** ** ** ** MIN. QFE PRESSURE IN HPA ****** ****** ****** 823.0 ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** 16 ** ** ** ** ** ** ** ** MEAN QNH PRESSURE IN HPA ****** ****** ****** 1017.7 ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** 1023.4 ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** 10 ** ** ** ** ** ** ** ** MIN. QNH PRESSURE IN HPA ****** ****** ****** 1008.8 ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** 16 ** ** ** ** ** ** ** ** MEAN QFF PRESSURE IN HPA ****** ****** ****** 1010.6 ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** 1017.2 ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** 10 ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** 998.9 ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** 16 ** ** ** ** ** ** ** ** PRESSURE AT HOUR 2100 UTC. MEAN QFE PRESSURE IN HPA ****** ****** ****** 830.5 ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** 835.4 ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** 10 ** ** ** ** ** ** ** ** MIN. QFE PRESSURE IN HPA ****** ****** ****** 822.1 ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** 16 ** ** ** ** ** ** ** ** MEAN QNH PRESSURE IN HPA ****** ****** ****** 1017.6 ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** 1023.4 ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** 10 ** ** ** ** ** ** ** ** MIN. QNH PRESSURE IN HPA ****** ****** ****** 1007.7 ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** 16 ** ** ** ** ** ** ** ** MEAN QFF PRESSURE IN HPA ****** ****** ****** 1010.5 ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** 1017.5 ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** 10 ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** 998.0 ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** 16 ** ** ** ** ** ** ** ** ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION NATANZ (99421) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 33 32 N LONGITUDE 51 54 E DATA PROCESSING CENTER ELEVATION 1684.9 M MEANS AND EXTREMES FOR THE YEAR 2005 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AIR TEMPERATURE (C) 2.3 2.9 11.5 16.7 20.4 27.4 30.8 28.7 25.9 19.7 9.5 8.3 17.0 MINIMUN AIR TEMPERATURE (C) -2.4 -2.0 5.1 10.4 13.8 20.3 24.5 22.2 18.9 13.4 4.6 3.6 11.0 DAYS WITH MINIMUM TEMP. >=21 0 0 0 0 0 13 30 21 5 0 0 0 69 DAYS WITH MINIMUM TEMP. <=-4 7 10 0 0 0 0 0 0 0 0 0 3 20 DAYS WITH FREEZING MIN.<= 0 26 20 3 1 0 0 0 0 0 0 0 5 55 TEMPERATURE RECORDS LOWEST(C) -9.2 -14.0 -2.0 0.0 8.0 13.6 20.0 16.0 15.0 4.4 1.2 -5.4 -14.0 DAY 13 11 27 6 6 9 29 31 30 24 12 31 MAXIMUM AIR TEMPERATURE (C) 6.1 6.2 15.5 20.5 24.4 31.4 34.6 32.8 29.9 23.2 12.5 11.7 20.7 DAYS WITH MAXIMUM TEMP. >=30 0 0 0 0 0 20 31 26 16 0 0 0 93 DAYS WITH MAXIMUM TEMP. <= 0 1 6 0 0 0 0 0 0 0 0 0 0 7 TEMPERATURE RECORDS HIGHEST(C) 16.6 17.4 22.0 29.6 27.4 39.0 39.8 38.4 34.6 27.6 21.4 19.0 39.8 DAY 1 21 10 26 17 22 18 7 3 8 5 4 DIF. BETWEEN (MAX.-MIN.) (C) 8.5 8.2 10.4 10.1 10.6 11.1 10.1 10.6 11.0 9.8 7.9 8.1 9.7 MEAN DAILY TEMP. (MDT) (C) 1.8 2.1 10.3 15.5 19.1 25.9 29.6 27.5 24.4 18.3 8.5 7.6 15.9 COOLING DEG. DAYS(BASE 21 0C) 0.0 0.0 0.0 5.9 3.4 149.7 265.5 201.6 101.4 4.9 0.0 0.0 732.4 HEATING DEG. DAYS(BASE 18 0C) 500.8 445.3 239.2 103.3 14.5 0.0 0.0 0.0 0.0 42.8 283.6 321.6 1951.0 DEWPOINT (MEAN C) -6.0 -4.5 -2.4 0.5 1.6 3.1 4.8 4.0 1.5 -0.5 -0.5 -2.4 -0.1 MIXING RATIO (G/KG) 3.05 3.37 4.08 5.13 5.35 5.98 6.65 6.41 5.27 4.49 4.54 3.98 4.86 VAPOUR PRESSURE (HPA) 4.05 4.47 5.40 6.81 7.09 7.89 8.77 8.46 6.98 5.99 6.04 5.31 6.44 SATURATION DEF. (HPA) 3.54 3.64 8.65 13.51 17.47 29.61 36.57 32.15 27.10 17.86 6.27 6.18 16.88 RELATIVE HUMIDITY (MEAN %) 59 62 41 37 31 23 21 23 22 27 53 49 37 RELATIVE HUMIDITY (MAX. %) 76 74 57 51 44 30 28 31 28 34 66 62 48 RELATIVE HUMIDITY (MIN. %) 46 52 30 29 22 18 16 18 17 22 45 38 29 RELATIVE HUMIDITY (MEAN% 03UTC) 65 71 55 48 43 30 28 31 28 33 65 58 46 RELATIVE HUMIDITY (MEAN% 09UTC) 52 56 35 32 26 21 19 21 19 24 48 43 33 RELATIVE HUMIDITY (MEAN% 15UTC) 68 64 40 34 27 19 17 19 20 28 54 53 37 RH=0 => RELATIVE HUMIDITY < 0.5% AMOUNT OF PRECIPITATION MM. 53.7 27.1 7.3 19.0 12.5 0.0 0.3 0.3 0.2 0.0 34.1 19.0 173.5 DAYS WITH PRECIPITATION >=10 2 0 0 1 0 0 0 0 0 0 1 1 5 DAYS WITH PRECIPITATION >= 5 4 2 0 2 0 0 0 0 0 0 2 2 12 DAYS WITH PRECIPITATION >= 1 6 6 5 4 5 0 0 0 0 0 7 3 36 DAYS WITH PRECIPITATION 8 9 6 6 12 0 1 1 1 0 7 4 55 GREATEST DAILY PRECIPITATION 23.3 9.3 2.6 11.0 3.0 0.0 0.3 0.3 0.2 0.0 15.0 11.0 23.3 DAY 12 8 14 17 27 ** 24 11 1 ** 8 18 DAY WITH THUNDER STORM 0 0 0 1 7 0 0 0 0 0 0 0 8 DAYS WITH SNOW OR SLEET 6 9 0 0 0 0 0 0 0 0 0 0 15 DAYS WITH DUST 0 1 0 3 3 0 1 0 0 0 1 0 9 WIND DIRECTION (PREVAILING) 45 360 45 360 315 360 45 360 360 315 45 45 45 PREVAILING WIND SPEED(KNOTS) 5.8 6.2 6.1 7.3 7.6 7.4 8.0 7.0 7.3 7.4 5.6 6.3 6.6 PREVAILING WIND PERCENT 6.5 9.3 11.6 14.0 16.1 14.7 18.7 13.5 9.3 12.9 16.0 20.6 11.2 CALMS PERCENT OF WIND 73.5 63.6 47.7 45.3 39.4 48.7 40.6 58.1 61.3 58.7 40.0 44.5 51.7 NO. OF WIND OBSERVATION 155 140 155 150 155 150 155 155 150 155 150 155 1825 VECTOR WIND DIRECTION (MEAN) 286 276 263 291 341 24 30 39 18 314 60 72 16 VECTOR WIND MAGNITUDE(KNOTS) 0.4 0.4 0.7 0.8 0.8 1.9 2.8 1.6 1.2 0.1 1.0 0.6 0.7 WIND STEADINESES (MEAN %) 18.2 14.3 15.9 15.7 16.7 50.0 59.6 50.0 40.0 2.8 26.3 14.6 18.4 WIND SPEED (MEAN KNOTS) 2.2 2.8 4.4 5.1 4.8 3.8 4.7 3.2 3.0 3.6 3.8 4.1 3.8 FASTEST WIND DIRECTION 240 220 210 270 210 310 330 180 240 90 90 220 210 FASTEST WIND SPEED (KNOTS) 33 27 31 35 39 14 14 14 17 19 27 25 39 DAY 3 1 24 2 5 8 7 6 18 28 5 24 DAYS WITH SKY CLEAR (0-2)/8 18 5 13 14 18 29 22 29 30 26 15 14 233 DAYS WITH P.CLOUDY (3-6)/8 11 15 12 8 13 1 9 2 0 5 11 12 99 DAYS WITH CLOUDY (7-8)/8 2 8 6 8 0 0 0 0 0 0 4 5 33 DAYS WITH VISIBILITY =< 2 KM 6 3 0 0 1 0 0 0 0 0 0 0 10 DURATION OF SUNSHINE HOURS 211.1 157.4 233.2 254.4 280.0 355.7 338.5 348.7 314.2 281.4 205.6 207.1 3187.3 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION NATANZ (99421) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 33 32 N LONGITUDE 51 54 E DATA PROCESSING CENTER ELEVATION 1684.9 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 831.1 829.9 829.6 833.0 831.1 828.9 828.5 829.5 831.4 835.7 835.0 834.8 831.5 MAX. QFE PRESSURE IN HPA 838.4 837.3 834.7 839.8 835.8 834.3 833.5 833.9 834.9 842.0 839.3 840.8 842.0 DAY-HOUR 9- 6 17- 9 30- 6 6- 6 18- 9 16- 6 28- 6 27- 6 10- 6 12- 6 23-15 29- 6 MIN. QFE PRESSURE IN HPA 817.9 824.2 818.4 827.0 821.6 821.1 820.7 823.8 826.4 828.6 828.2 824.6 817.9 DAY-HOUR 23- 3 5- 3 24-12 27-12 5-12 20-15 6-15 7-15 5-15 20-12 8-12 24- 3 MEAN QNH PRESSURE IN HPA 1018.4 1016.9 1016.6 1020.6 1018.4 1015.7 1015.2 1016.4 1018.7 1023.8 1023.0 1022.7 1018.9 MAX. QNH PRESSURE IN HPA 1026.9 1025.7 1022.6 1028.6 1023.9 1022.1 1021.2 1021.6 1022.8 1031.2 1028.0 1029.8 1031.2 DAY-HOUR 9- 6 17- 9 30- 6 6- 6 18- 9 16- 6 28- 6 27- 6 10- 6 12- 6 23-15 29- 6 MIN. QNH PRESSURE IN HPA 1002.8 1010.2 1003.4 1013.5 1007.1 1006.6 1006.1 1009.7 1012.8 1015.4 1014.9 1010.7 1002.8 DAY-HOUR 23- 3 5- 3 24-12 27-12 5-12 20-15 6-15 7-15 5-15 20-12 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 830.9 829.6 829.8 833.4 831.6 829.4 828.7 829.8 831.7 835.9 835.1 834.7 831.7 MAX. QFE PRESSURE IN HPA 836.5 836.6 833.6 838.3 835.3 833.4 833.0 833.3 834.2 840.9 838.2 839.7 840.9 DAY 9 18 29 6 19 16 28 27 10 12 29 8 MIN. QFE PRESSURE IN HPA 817.9 824.2 821.3 827.1 822.8 823.9 822.0 824.4 827.9 830.7 829.8 824.6 817.9 DAY 23 5 24 30 6 20 6 8 5 21 6 24 MEAN QNH PRESSURE IN HPA 1018.1 1016.6 1016.8 1021.0 1018.9 1016.4 1015.6 1016.8 1019.1 1024.0 1023.0 1022.6 1019.1 MAX. QNH PRESSURE IN HPA 1024.7 1024.8 1021.3 1026.8 1023.3 1021.1 1020.6 1020.9 1022.0 1029.9 1026.7 1028.5 1029.9 DAY 9 18 29 6 19 16 28 27 10 12 29 8 MIN. QNH PRESSURE IN HPA 1002.8 1010.2 1006.8 1013.6 1008.6 1009.9 1007.6 1010.4 1014.6 1017.9 1016.8 1010.7 1002.8 DAY 23 5 24 30 6 20 6 8 5 21 6 24 MEAN QFF PRESSURE IN HPA 1020.9 1018.6 1012.7 1013.2 1008.5 1001.2 998.1 1000.8 1005.5 1014.6 1020.4 1020.9 1011.3 MAX. QFF PRESSURE IN HPA 1033.1 1029.9 1020.6 1026.4 1013.5 1008.7 1005.5 1005.9 1009.1 1024.7 1025.6 1033.2 1033.2 DAY 13 15 27 6 19 10 28 17 28 24 25 29 MIN. QFF PRESSURE IN HPA 1005.7 1005.8 1001.0 1001.6 1000.9 992.9 989.1 991.7 999.5 1006.6 1010.3 1005.2 989.1 DAY 23 2 24 27 6 20 6 8 5 21 6 24 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION NATANZ (99421) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 33 32 N LONGITUDE 51 54 E DATA PROCESSING CENTER ELEVATION 1684.9 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 832.0 830.8 830.7 834.0 832.1 830.0 829.4 830.5 832.6 836.9 836.0 835.9 832.6 MAX. QFE PRESSURE IN HPA 838.4 837.2 834.7 839.8 835.6 834.3 833.5 833.9 834.9 842.0 839.2 840.8 842.0 DAY 9 15 30 6 19 16 28 27 10 12 23 29 MIN. QFE PRESSURE IN HPA 820.2 825.3 820.8 827.5 824.1 824.3 822.8 825.3 828.7 831.4 830.7 827.6 820.2 DAY 23 7 24 30 6 20 6 8 5 4 6 24 MEAN QNH PRESSURE IN HPA 1019.4 1018.0 1017.9 1021.7 1019.6 1017.1 1016.3 1017.7 1020.1 1025.1 1024.1 1024.0 1020.1 MAX. QNH PRESSURE IN HPA 1026.9 1025.5 1022.6 1028.6 1023.7 1022.1 1021.2 1021.6 1022.8 1031.2 1027.9 1029.8 1031.2 DAY 9 15 30 6 19 16 28 27 10 12 23 29 MIN. QNH PRESSURE IN HPA 1005.5 1011.5 1006.2 1014.1 1010.1 1010.3 1008.6 1011.5 1015.5 1018.7 1017.9 1014.2 1005.5 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 0900 UTC. MEAN QFE PRESSURE IN HPA 831.3 830.3 830.0 833.4 831.5 829.4 829.0 830.1 831.8 836.0 835.2 835.0 831.9 MAX. QFE PRESSURE IN HPA 837.5 837.3 833.7 839.2 835.8 833.7 832.7 833.4 834.1 841.5 838.9 840.0 841.5 DAY 9 17 28 6 18 15 28 17 9 11 23 29 MIN. QFE PRESSURE IN HPA 819.8 824.8 819.5 827.7 823.9 823.7 822.6 825.3 828.2 830.0 830.5 827.8 819.5 DAY 23 7 24 30 6 20 6 8 5 20 8 24 MEAN QNH PRESSURE IN HPA 1018.5 1017.4 1017.0 1021.1 1018.8 1016.3 1015.9 1017.1 1019.2 1024.2 1023.1 1022.9 1019.3 MAX. QNH PRESSURE IN HPA 1025.9 1025.7 1021.4 1027.9 1023.9 1021.4 1020.2 1021.1 1021.9 1030.6 1027.5 1028.8 1030.6 DAY 9 17 28 6 18 15 28 17 9 11 23 29 MIN. QNH PRESSURE IN HPA 1005.0 1010.9 1004.7 1014.3 1009.9 1009.6 1008.3 1011.5 1014.9 1017.0 1017.6 1014.4 1004.7 DAY 23 7 24 30 6 20 6 8 5 20 8 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 830.5 829.1 828.6 832.2 830.3 828.0 827.9 828.7 830.4 834.8 834.3 834.1 830.7 MAX. QFE PRESSURE IN HPA 836.2 835.9 832.8 837.6 835.2 832.4 831.6 832.2 832.7 840.4 838.4 839.2 840.4 DAY 9 16 28 6 18 16 28 16 9 11 23 29 MIN. QFE PRESSURE IN HPA 820.4 824.6 818.4 827.0 821.6 822.1 821.0 824.2 826.8 828.6 828.2 826.7 818.4 DAY 23 7 24 27 5 20 6 8 5 20 8 25 MEAN QNH PRESSURE IN HPA 1017.6 1016.0 1015.4 1019.7 1017.3 1014.7 1014.5 1015.5 1017.5 1022.7 1022.1 1021.8 1017.9 MAX. QNH PRESSURE IN HPA 1024.4 1024.0 1020.3 1026.0 1023.2 1019.9 1018.9 1019.6 1020.2 1029.3 1026.9 1027.9 1029.3 DAY 9 16 28 6 18 16 28 16 9 11 23 29 MIN. QNH PRESSURE IN HPA 1005.7 1010.7 1003.4 1013.5 1007.1 1007.7 1006.4 1010.2 1013.3 1015.4 1014.9 1013.2 1003.4 DAY 23 7 24 27 5 20 6 8 5 20 8 25 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION NATANZ (99421) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 33 32 N LONGITUDE 51 54 E DATA PROCESSING CENTER ELEVATION 1684.9 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 831.0 829.6 829.0 832.1 830.3 827.5 827.3 828.4 830.4 835.0 834.8 834.6 830.8 MAX. QFE PRESSURE IN HPA 837.4 836.1 833.0 837.0 835.1 831.8 831.2 831.8 832.7 840.4 839.3 839.7 840.4 DAY 9 17 28 6 18 16 28 16 9 11 23 29 MIN. QFE PRESSURE IN HPA 823.0 824.4 820.3 827.6 822.0 821.1 820.7 823.8 826.4 828.6 829.0 826.6 820.3 DAY 3 1 24 3 5 20 6 7 5 20 8 25 MEAN QNH PRESSURE IN HPA 1018.2 1016.6 1015.8 1019.6 1017.4 1014.1 1013.9 1015.1 1017.5 1023.0 1022.7 1022.5 1018.0 MAX. QNH PRESSURE IN HPA 1025.8 1024.2 1020.6 1025.3 1023.1 1019.2 1018.5 1019.2 1020.2 1029.3 1028.0 1028.5 1029.3 DAY 9 17 28 6 18 16 28 16 9 11 23 29 MIN. QNH PRESSURE IN HPA 1008.8 1010.4 1005.6 1014.2 1007.6 1006.6 1006.1 1009.7 1012.8 1015.4 1015.9 1013.0 1005.6 DAY 3 1 24 3 5 20 6 7 5 20 8 25 MEAN QFF PRESSURE IN HPA 1021.1 1018.4 1011.6 1011.7 1007.0 998.8 996.5 999.1 1003.8 1013.5 1020.1 1020.8 1010.2 MAX. QFF PRESSURE IN HPA 1032.5 1028.7 1020.7 1025.9 1012.2 1005.9 1003.6 1005.1 1007.4 1022.9 1025.6 1033.6 1033.6 DAY 13 15 26 6 14 10 28 31 28 24 27 29 MIN. QFF PRESSURE IN HPA 1008.0 1005.6 1001.6 1001.8 997.7 988.8 987.1 989.8 997.5 1003.1 1011.8 1009.8 987.1 DAY 3 1 24 26 3 20 6 7 5 20 5 25 PRESSURE AT HOUR 1800 UTC. MEAN QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** PRESSURE AT HOUR 2100 UTC. MEAN QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION NATANZ (99421) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 33 32 N LONGITUDE 51 54 E DATA PROCESSING CENTER ELEVATION 1684.9 M CLIMATOLOGICAL NORMALS FOR THE PERIOD 1992-2005 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AIR TEMPERATURE (C) 2.8 5.3 9.5 16.2 21.2 27.1 29.6 29.2 24.7 18.2 10.3 5.2 16.6 MINIMUN AIR TEMPERATURE (C) -1.7 -0.1 3.8 10.1 14.4 20.0 23.0 22.4 18.3 12.4 5.4 0.8 10.7 DAYS WITH MINIMUM TEMP. >=21 0.0 0.0 0.0 0.0 0.5 12.4 24.9 23.4 6.4 0.0 0.0 0.0 67.6 DAYS WITH MINIMUM TEMP. <=-4 8.4 4.2 0.9 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.4 3.0 16.9 DAYS WITH FREEZING MIN.<= 0 21.5 15.7 5.4 0.2 0.0 0.0 0.0 0.0 0.0 0.0 2.9 12.6 58.3 TEMPERATURE RECORDS LOWEST(C) -14.0 -14.0 -8.5 -2.0 2.5 10.0 15.0 14.0 8.4 4.0 -6.0 -11.6 -14.0 YEAR-DAY 92-26 5-11 3- 1 97-12 92- 5 95- 1 4-13 92-31 94-20 98-10 92-27 94- 7 92-26 MAXIMUM AIR TEMPERATURE (C) 6.0 9.0 13.1 20.0 25.0 30.9 33.5 33.1 28.5 21.7 13.5 8.3 20.2 DAYS WITH MAXIMUM TEMP. >=30 0.0 0.0 0.0 0.0 2.9 19.4 28.1 28.2 12.1 0.1 0.0 0.0 90.8 DAYS WITH MAXIMUM TEMP. <= 0 3.1 0.8 0.4 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.6 4.9 TEMPERATURE RECORDS HIGHEST(C) 18.2 21.2 25.2 29.6 33.8 39.0 39.8 38.6 34.6 30.2 22.6 19.0 39.8 YEAR-DAY 3-12 4-14 4- 7 5-26 0-26 5-22 5-18 97-14 5- 3 97- 6 1- 7 98-14 5-18 DIF. BETWEEN (MAX.-MIN.) (C) 7.7 9.1 9.3 9.9 10.6 10.9 10.5 10.7 10.2 9.3 8.1 7.5 9.5 MEAN DAILY TEMP. (MDT) (C) 2.1 4.4 8.5 15.0 19.7 25.4 28.2 27.7 23.4 17.0 9.5 4.6 15.5 STANDARD DEVIATION OF MDT(C) 2.03 1.70 2.23 1.54 1.80 0.87 1.34 1.23 1.36 1.80 1.73 2.29 1.66 COOLING DEG. DAYS(BASE 21 0C) 0.0 0.0 0.0 1.7 26.8 135.0 223.4 208.6 84.0 5.3 0.0 0.0 684.8 HEATING DEG. DAYS(BASE 18 0C) 490.2 383.3 295.4 103.3 24.6 0.3 0.0 0.0 1.5 59.6 256.5 413.2 2027.9 DEWPOINT (MEAN C) -5.4 -6.2 -4.4 -0.0 1.8 1.7 4.1 1.6 0.0 -0.7 -2.5 -4.0 -1.2 MIXING RATIO (G/KG) 3.22 3.09 3.58 4.90 5.53 5.47 6.45 5.41 4.81 4.57 4.04 3.60 4.56 VAPOUR PRESSURE (HPA) 4.27 4.10 4.74 6.49 7.32 7.22 8.49 7.15 6.38 6.08 5.38 4.79 6.03 SATURATION DEF. (HPA) 3.85 5.47 8.10 12.90 19.22 29.83 33.69 34.80 25.97 15.67 7.64 4.53 16.81 RELATIVE HUMIDITY (MEAN %) 57 47 42 37 31 21 22 18 21 31 45 55 35 RELATIVE HUMIDITY (MAX. %) 69 60 56 51 42 29 30 26 28 39 57 66 46 RELATIVE HUMIDITY (MIN. %) 46 37 32 28 23 16 16 14 16 25 37 45 28 RELATIVE HUMIDITY (MEAN% 03UTC) 62 56 52 47 40 29 30 25 27 38 53 61 43 RELATIVE HUMIDITY (MEAN% 09UTC) 52 43 38 33 27 19 19 16 19 27 40 50 32 RELATIVE HUMIDITY (MEAN% 15UTC) 62 48 41 37 28 18 18 16 21 32 48 61 36 RH=0 => RELATIVE HUMIDITY < 0.5% AMOUNT OF PRECIPITATION MM. 34.0 23.2 43.3 28.6 19.8 2.1 0.5 0.9 0.1 5.6 16.6 20.6 195.3 DAYS WITH PRECIPITATION >=10 1.1 0.6 1.4 0.8 0.6 0.0 0.0 0.0 0.0 0.1 0.5 0.4 5.5 DAYS WITH PRECIPITATION >= 5 2.5 1.7 2.9 1.7 1.2 0.1 0.0 0.1 0.0 0.2 1.1 1.6 13.1 DAYS WITH PRECIPITATION >= 1 5.1 3.9 6.1 4.2 3.9 0.5 0.2 0.2 0.0 0.8 2.7 4.1 31.7 DAYS WITH PRECIPITATION 6.9 6.2 8.0 7.6 6.6 1.4 0.5 0.6 0.5 2.1 4.4 6.9 51.7 GREATEST DAILY PRECIPITATION 33.0 30.0 35.0 50.0 26.0 6.0 3.0 5.0 0.3 33.0 37.0 20.5 50.0 YEAR-DAY 2- 8 98-10 96- 4 2- 3 92- 7 95- 6 99-28 98- 4 93-27 0- 4 0- 6 0-11 2 DAY WITH THUNDER STORM 0.1 0.2 0.3 1.3 2.2 0.5 0.1 0.2 0.2 0.3 0.1 0.1 5.6 DAYS WITH SNOW OR SLEET 3.6 2.6 1.3 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.1 1.9 9.5 DAYS WITH DUST 0.1 0.3 0.6 1.0 1.1 0.4 0.5 0.1 0.2 0.1 0.3 0.1 4.8 WIND DIRECTION (PREVAILING) 90 45 90 45 45 45 90 90 45 90 90 90 90 PREVAILING WIND SPEED(KNOTS) 4.8 5.8 5.8 6.9 6.2 6.4 6.5 6.6 6.1 5.6 5.1 4.7 5.9 PREVAILING WIND PERCENT 7.4 8.7 10.8 11.3 13.0 14.8 15.2 15.1 12.0 9.5 8.2 6.6 10.6 CALMS PERCENT OF WIND 68.1 56.1 50.6 44.9 45.0 44.7 41.9 44.9 52.6 57.3 63.4 71.8 53.4 NO. OF WIND OBSERVATION 155.0 141.4 155.0 154.3 155.0 151.9 161.6 161.6 156.4 161.6 151.8 153.9 1859.5 VECTOR WIND DIRECTION (MEAN) 69 288 269 336 30 68 87 97 75 56 180 134 73 VECTOR WIND MAGNITUDE(KNOTS) 0.1 0.3 0.4 0.5 0.7 1.6 1.9 1.9 1.2 0.5 0.2 0.1 0.6 WIND STEADINESES (MEAN %) 5.0 8.8 9.5 10.9 16.7 41.0 47.5 52.8 41.4 18.5 7.7 5.6 17.6 WIND SPEED (MEAN KNOTS) 2.0 3.4 4.2 4.6 4.2 3.9 4.0 3.6 2.9 2.7 2.6 1.8 3.4 FASTEST WIND DIRECTION 260 260 270 30 260 130 30 90 240 270 270 250 270 FASTEST WIND SPEED (KNOTS) 39 49 58 37 58 29 23 19 31 33 45 35 58 YEAR-DAY 4-13 99-20 98-30 1- 9 99-14 4-30 93- 7 93- 5 95-20 97- 7 1-18 2-21 98 DAYS WITH SKY CLEAR (0-2)/8 14.9 15.3 13.4 11.4 15.7 25.2 25.4 27.1 27.3 23.1 14.7 13.5 227.0 DAYS WITH P.CLOUDY (3-6)/8 9.6 8.4 10.9 10.9 12.0 4.2 5.6 3.9 2.6 6.8 10.3 10.5 95.7 DAYS WITH CLOUDY (7-8)/8 6.4 4.6 6.7 7.6 3.3 0.6 0.0 0.0 0.1 1.1 4.9 6.7 42.0 DAYS WITH VISIBILITY =< 2 KM 3.6 2.3 1.3 0.6 0.6 0.0 0.0 0.0 0.1 0.1 1.1 2.9 12.6 DURATION OF SUNSHINE HOURS 184.2 205.3 213.0 239.4 297.3 334.3 347.9 348.1 307.7 270.8 202.1 180.6 3130.7 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION NATANZ (99421) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 33 32 N LONGITUDE 51 54 E DATA PROCESSING CENTER ELEVATION 1684.9 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 831.7 830.5 830.0 830.9 831.0 828.7 827.8 829.7 832.1 835.2 834.5 834.0 831.3 MAX. QFE PRESSURE IN HPA 842.4 842.2 841.6 841.0 839.3 837.0 836.4 837.5 842.1 842.5 845.4 842.6 845.4 YEAR-DAY 99- 2 98-23 2-11 98-12 98- 8 98-17 98-20 96-29 94-23 96- 2 96-18 98- 9 96-18 MIN. QFE PRESSURE IN HPA 816.6 817.2 816.4 818.2 818.0 820.6 819.9 822.7 822.9 826.4 820.3 819.8 816.4 YEAR-DAY 98-13 3-20 97-29 2- 3 4-13 3-30 98- 8 0-30 0- 1 96-27 1-18 94- 4 97-29 MEAN QNH PRESSURE IN HPA 1019.0 1017.6 1017.1 1018.1 1018.3 1015.5 1014.5 1016.7 1019.5 1023.1 1022.4 1021.8 1018.6 MAX. QNH PRESSURE IN HPA 1031.7 1031.4 1030.7 1030.0 1028.0 1025.3 1024.6 1025.9 1031.3 1031.8 1035.2 1031.9 1035.2 YEAR-DAY 99- 2 98-23 2-11 98-12 98- 8 98-17 98-20 96-29 94-23 96- 2 96-18 98- 9 96-18 MIN. QNH PRESSURE IN HPA 1001.2 1001.9 1001.0 1003.1 1002.9 1006.0 1005.1 1008.4 1008.7 1012.8 1005.6 1005.0 1001.0 YEAR-DAY 98-13 3-20 97-29 2- 3 4-13 3-30 98- 8 0-30 0- 1 96-27 1-18 94- 4 97-29 MEAN QFF PRESSURE IN HPA ****** ****** ****** 1010.2 ****** ****** 994.0 1001.7 1006.3 1011.4 ****** ****** 1004.7 MAX. QFF PRESSURE IN HPA ****** ****** ****** 1018.2 ****** ****** 1003.8 1007.6 1016.7 1018.7 ****** ****** 1018.7 YEAR-DAY **-** **-** **-** 4- 8 **-** **-** 3- 3 3- 3 3-27 3-15 **-** **-** 3-15 MIN. QFF PRESSURE IN HPA ****** ****** ****** 996.3 ****** ****** 989.1 994.0 997.1 1004.8 ****** ****** 989.1 YEAR-DAY **-** **-** **-** 4-17 **-** **-** 3-18 3- 1 3- 7 3-27 **-** **-** 3-18 PRESSURE AT HOUR 0000 UTC. MEAN QFE PRESSURE IN HPA ****** ****** ****** 829.7 ****** ****** 825.4 830.2 831.8 834.2 ****** ****** 830.3 MAX. QFE PRESSURE IN HPA ****** ****** ****** 834.7 ****** ****** 831.0 833.6 837.6 838.2 ****** ****** 838.2 YEAR-DAY **-** **-** **-** 4-11 **-** **-** 3- 4 3- 4 3-27 3-15 **-** **-** 3-15 MIN. QFE PRESSURE IN HPA ****** ****** ****** 821.0 ****** ****** 821.2 825.4 827.3 830.2 ****** ****** 821.0 YEAR-DAY **-** **-** **-** 4-17 **-** **-** 3- 1 3- 1 3- 7 3-29 **-** **-** 4-17 MEAN QNH PRESSURE IN HPA ****** ****** ****** 1016.7 ****** ****** 1011.6 1017.3 1019.1 1022.0 ****** ****** 1017.3 MAX. QNH PRESSURE IN HPA ****** ****** ****** 1022.6 ****** ****** 1018.2 1021.3 1026.0 1026.7 ****** ****** 1026.7 YEAR-DAY **-** **-** **-** 4-11 **-** **-** 3- 4 3- 4 3-27 3-15 **-** **-** 3-15 MIN. QNH PRESSURE IN HPA ****** ****** ****** 1006.4 ****** ****** 1006.7 1011.6 1013.9 1017.3 ****** ****** 1006.4 YEAR-DAY **-** **-** **-** 4-17 **-** **-** 3- 1 3- 1 3- 7 3-29 **-** **-** 4-17 MEAN QFF PRESSURE IN HPA ****** ****** ****** 1009.4 ****** ****** 993.2 1001.0 1005.7 1010.8 ****** ****** 1004.0 MAX. QFF PRESSURE IN HPA ****** ****** ****** 1016.7 ****** ****** 1001.2 1005.8 1016.1 1016.0 ****** ****** 1016.7 YEAR-DAY **-** **-** **-** 4-11 **-** **-** 3- 3 3-31 3-27 3-24 **-** **-** 4-11 MIN. QFF PRESSURE IN HPA ****** ****** ****** 996.4 ****** ****** 989.2 994.0 998.1 1005.1 ****** ****** 989.2 YEAR-DAY **-** **-** **-** 4-17 **-** **-** 3-25 3- 1 3- 8 3- 2 **-** **-** 3-25 PRESSURE AT HOUR 0300 UTC. MEAN QFE PRESSURE IN HPA 831.6 830.4 830.2 831.2 831.5 829.4 828.3 830.1 832.4 835.3 834.5 834.0 831.6 MAX. QFE PRESSURE IN HPA 840.6 841.1 841.1 840.1 838.3 837.0 836.0 836.9 841.2 841.8 843.7 841.6 843.7 YEAR-DAY 99- 2 98-23 2-11 98-12 98- 8 98-17 0-31 96-30 94-23 96- 2 96-19 3-12 96-19 MIN. QFE PRESSURE IN HPA 816.6 817.9 820.3 820.5 821.9 821.8 822.0 824.1 824.0 828.3 823.6 820.5 816.6 YEAR-DAY 98-13 3-19 1-25 4-17 4-13 99-25 5- 6 94- 2 0- 1 96-27 4-23 94- 4 98-13 MEAN QNH PRESSURE IN HPA 1018.9 1017.6 1017.3 1018.4 1018.9 1016.3 1015.0 1017.1 1019.9 1023.3 1022.4 1021.7 1018.9 MAX. QNH PRESSURE IN HPA 1029.5 1030.1 1030.1 1029.0 1026.8 1025.3 1024.1 1025.2 1030.3 1031.0 1033.2 1030.7 1033.2 YEAR-DAY 99- 2 98-23 2-11 98-12 98- 8 98-17 0-31 96-30 94-23 96- 2 96-19 3-12 96-19 MIN. QNH PRESSURE IN HPA 1001.2 1002.8 1005.6 1005.8 1007.5 1007.4 1007.6 1010.1 1010.0 1015.0 1009.5 1005.8 1001.2 YEAR-DAY 98-13 3-19 1-25 4-17 4-13 99-25 5- 6 94- 2 0- 1 96-27 4-23 94- 4 98-13 MEAN QFF PRESSURE IN HPA 1020.8 1017.7 1014.3 1010.8 1007.6 1001.2 998.3 1000.8 1006.7 1014.8 1019.4 1022.2 1011.2 MAX. QFF PRESSURE IN HPA 1035.3 1035.0 1030.5 1026.4 1020.2 1013.3 1009.2 1012.1 1021.8 1026.9 1035.1 1038.9 1038.9 YEAR-DAY 99- 3 98-23 3- 2 5- 6 3- 2 95- 1 0-31 96-30 94-23 95-27 96-19 3-12 3-12 MIN. QFF PRESSURE IN HPA 999.6 1000.3 997.6 996.3 994.1 990.7 988.2 990.6 994.2 1004.5 1002.3 1003.1 988.2 YEAR-DAY 97-16 98- 8 1-25 4-17 4-13 3-30 95-17 94- 1 0- 1 98- 1 4-23 94- 4 95-17 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION NATANZ (99421) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 33 32 N LONGITUDE 51 54 E DATA PROCESSING CENTER ELEVATION 1684.9 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 832.6 831.4 831.1 831.9 832.1 829.9 828.9 830.8 833.3 836.3 835.5 834.9 832.4 MAX. QFE PRESSURE IN HPA 842.4 842.2 841.6 841.0 839.3 836.8 836.4 837.5 842.1 842.5 845.4 842.6 845.4 YEAR-DAY 99- 2 98-23 2-11 98-12 98- 8 93-23 98-20 96-29 94-23 96- 2 96-18 98- 9 96-18 MIN. QFE PRESSURE IN HPA 818.6 818.1 819.8 820.5 821.9 821.8 822.8 824.8 825.2 828.1 824.7 821.3 818.1 YEAR-DAY 98-13 3-19 97-25 4-17 4-13 99-25 97-16 94- 2 0- 1 96-27 1-18 94- 4 3-19 MEAN QNH PRESSURE IN HPA 1020.1 1018.7 1018.3 1019.2 1019.5 1016.9 1015.7 1018.0 1020.9 1024.4 1023.5 1022.9 1019.8 MAX. QNH PRESSURE IN HPA 1031.7 1031.4 1030.7 1030.0 1028.0 1025.1 1024.6 1025.9 1031.3 1031.8 1035.2 1031.9 1035.2 YEAR-DAY 99- 2 98-23 2-11 98-12 98- 8 93-23 98-20 96-29 94-23 96- 2 96-18 98- 9 96-18 MIN. QNH PRESSURE IN HPA 1003.6 1003.0 1005.0 1005.8 1007.5 1007.4 1008.6 1010.9 1011.4 1014.8 1010.8 1006.8 1003.0 YEAR-DAY 98-13 3-19 97-25 4-17 4-13 99-25 97-16 94- 2 0- 1 96-27 1-18 94- 4 3-19 MEAN QFF PRESSURE IN HPA ****** ****** ****** 1011.1 ****** ****** 995.5 1002.8 1007.6 1012.6 ****** ****** 1005.9 MAX. QFF PRESSURE IN HPA ****** ****** ****** 1018.2 ****** ****** 1003.8 1007.3 1016.7 1018.1 ****** ****** 1018.2 YEAR-DAY **-** **-** **-** 4- 8 **-** **-** 3- 3 3-30 3-27 3-15 **-** **-** 4- 8 MIN. QFF PRESSURE IN HPA ****** ****** ****** 999.0 ****** ****** 990.9 997.1 999.9 1007.5 ****** ****** 990.9 YEAR-DAY **-** **-** **-** 4-17 **-** **-** 3-30 3- 1 3- 7 3-27 **-** **-** 3-30 PRESSURE AT HOUR 0900 UTC. MEAN QFE PRESSURE IN HPA 831.7 830.7 830.4 831.2 831.3 829.2 828.3 830.2 832.5 835.3 834.5 834.0 831.6 MAX. QFE PRESSURE IN HPA 841.9 841.3 841.3 840.9 838.8 835.7 835.9 836.8 841.7 841.5 844.3 841.8 844.3 YEAR-DAY 99- 2 98-23 2-11 98-12 98- 8 93-23 0-30 96-29 94-23 93-17 96-18 4- 3 96-18 MIN. QFE PRESSURE IN HPA 817.5 818.4 818.0 820.5 819.9 821.4 822.6 824.3 824.1 827.0 821.9 820.3 817.5 YEAR-DAY 98-13 3-19 97-29 2- 3 4-13 99-25 95-16 94- 2 0- 1 96-27 1-18 94- 4 98-13 MEAN QNH PRESSURE IN HPA 1019.1 1017.9 1017.5 1018.5 1018.6 1016.1 1015.1 1017.3 1020.0 1023.3 1022.3 1021.7 1018.9 MAX. QNH PRESSURE IN HPA 1031.1 1030.4 1030.4 1029.9 1027.4 1023.8 1024.0 1025.1 1030.8 1030.6 1033.9 1031.0 1033.9 YEAR-DAY 99- 2 98-23 2-11 98-12 98- 8 93-23 0-30 96-29 94-23 93-17 96-18 4- 3 96-18 MIN. QNH PRESSURE IN HPA 1002.3 1003.4 1002.9 1005.8 1005.1 1006.9 1008.3 1010.3 1010.1 1013.5 1007.5 1005.6 1002.3 YEAR-DAY 98-13 3-19 97-29 2- 3 4-13 99-25 95-16 94- 2 0- 1 96-27 1-18 94- 4 98-13 MEAN QFF PRESSURE IN HPA ****** ****** ****** 1010.5 ****** ****** 994.8 1002.1 1006.8 1011.6 ****** ****** 1005.2 MAX. QFF PRESSURE IN HPA ****** ****** ****** 1017.5 ****** ****** 1003.4 1006.7 1016.1 1017.4 ****** ****** 1017.5 YEAR-DAY **-** **-** **-** 4-11 **-** **-** 3- 3 3-30 3-27 3-15 **-** **-** 4-11 MIN. QFF PRESSURE IN HPA ****** ****** ****** 1003.0 ****** ****** 990.5 996.5 998.8 1007.0 ****** ****** 990.5 YEAR-DAY **-** **-** **-** 4-17 **-** **-** 3-30 3- 1 3- 7 3-26 **-** **-** 3-30 PRESSURE AT HOUR 1200 UTC. MEAN QFE PRESSURE IN HPA 831.0 829.7 829.1 830.0 830.1 827.8 827.1 828.9 831.2 834.3 833.8 833.3 830.5 MAX. QFE PRESSURE IN HPA 841.0 840.3 839.4 839.4 837.6 834.6 835.0 834.9 840.4 841.0 843.3 841.4 843.3 YEAR-DAY 99- 2 98-23 2-11 94- 5 98- 8 93-22 0-30 96-29 94-23 95-25 96-18 98- 9 96-18 MIN. QFE PRESSURE IN HPA 818.0 817.2 816.4 818.2 818.0 820.9 821.0 822.8 822.9 826.4 820.3 819.8 816.4 YEAR-DAY 3-28 3-20 97-29 2- 3 4-13 99-25 98- 5 2-17 0- 1 96-27 1-18 94- 4 97-29 MEAN QNH PRESSURE IN HPA 1018.2 1016.7 1016.0 1017.1 1017.2 1014.5 1013.6 1015.7 1018.4 1022.1 1021.5 1021.0 1017.7 MAX. QNH PRESSURE IN HPA 1030.0 1029.2 1028.1 1028.1 1026.0 1022.5 1022.9 1022.8 1029.3 1030.0 1032.7 1030.5 1032.7 YEAR-DAY 99- 2 98-23 2-11 94- 5 98- 8 93-22 0-30 96-29 94-23 95-25 96-18 98- 9 96-18 MIN. QNH PRESSURE IN HPA 1002.9 1001.9 1001.0 1003.1 1002.9 1006.3 1006.4 1008.6 1008.7 1012.8 1005.6 1005.0 1001.0 YEAR-DAY 3-28 3-20 97-29 2- 3 4-13 99-25 98- 5 2-17 0- 1 96-27 1-18 94- 4 97-29 MEAN QFF PRESSURE IN HPA ****** ****** ****** 1009.0 ****** ****** 993.1 1000.5 1005.1 1010.2 ****** ****** 1003.6 MAX. QFF PRESSURE IN HPA ****** ****** ****** 1016.9 ****** ****** 1001.4 1004.2 1015.0 1016.4 ****** ****** 1016.9 YEAR-DAY **-** **-** **-** 4-11 **-** **-** 3- 3 3-30 3-27 3-15 **-** **-** 4-11 MIN. QFF PRESSURE IN HPA ****** ****** ****** 997.6 ****** ****** 989.6 995.8 997.2 1004.8 ****** ****** 989.6 YEAR-DAY **-** **-** **-** 4-17 **-** **-** 3-30 3- 1 3- 7 3-27 **-** **-** 3-30 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION NATANZ (99421) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 33 32 N LONGITUDE 51 54 E DATA PROCESSING CENTER ELEVATION 1684.9 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 831.6 830.2 829.5 830.2 830.1 827.5 826.7 828.7 831.2 834.7 834.4 834.0 830.7 MAX. QFE PRESSURE IN HPA 840.9 840.0 839.3 839.2 837.1 834.5 835.0 834.7 840.5 841.2 844.3 842.1 844.3 YEAR-DAY 99- 2 98-23 2-10 94- 5 98- 8 93-22 0-30 96-29 94-23 95-25 96-18 98-29 96-18 MIN. QFE PRESSURE IN HPA 819.0 818.4 817.6 820.2 818.9 820.6 819.9 822.7 823.5 827.9 820.7 819.9 817.6 YEAR-DAY 3-28 3-20 97-29 2- 3 4-13 3-30 98- 8 0-30 0- 1 96-27 1-18 2-21 97-29 MEAN QNH PRESSURE IN HPA 1018.9 1017.3 1016.5 1017.2 1017.2 1014.2 1013.2 1015.5 1018.5 1022.5 1022.2 1021.7 1017.9 MAX. QNH PRESSURE IN HPA 1029.9 1028.8 1028.0 1027.9 1025.4 1022.4 1022.9 1022.6 1029.4 1030.3 1033.9 1031.3 1033.9 YEAR-DAY 99- 2 98-23 2-10 94- 5 98- 8 93-22 0-30 96-29 94-23 95-25 96-18 98-29 96-18 MIN. QNH PRESSURE IN HPA 1004.1 1003.4 1002.4 1005.5 1004.0 1006.0 1005.1 1008.4 1009.4 1014.6 1006.1 1005.1 1002.4 YEAR-DAY 3-28 3-20 97-29 2- 3 4-13 3-30 98- 8 0-30 0- 1 96-27 1-18 2-21 97-29 MEAN QFF PRESSURE IN HPA 1020.8 1017.3 1013.3 1009.5 1005.9 999.0 996.5 999.2 1005.4 1014.0 1019.2 1022.2 1010.2 MAX. QFF PRESSURE IN HPA 1035.4 1032.8 1031.7 1026.5 1019.5 1011.1 1008.0 1009.5 1020.7 1025.9 1034.5 1037.5 1037.5 YEAR-DAY 99- 2 98-23 3- 2 94- 5 3- 1 93-22 0-30 96-30 94-23 95-25 3-25 3-12 3-12 MIN. QFF PRESSURE IN HPA 1003.4 998.2 997.0 998.5 991.2 988.8 986.2 989.8 994.1 1003.1 999.9 1002.4 986.2 YEAR-DAY 3-28 3-20 0-24 97- 9 4-13 0-24 95-16 5- 7 0- 1 98- 1 1-18 94- 3 95-16 PRESSURE AT HOUR 1800 UTC. MEAN QFE PRESSURE IN HPA ****** ****** ****** 830.5 ****** ****** 825.9 830.7 832.2 834.6 ****** ****** 830.8 MAX. QFE PRESSURE IN HPA ****** ****** ****** 835.4 ****** ****** 831.0 833.8 837.8 839.2 ****** ****** 839.2 YEAR-DAY **-** **-** **-** 4-10 **-** **-** 3- 3 3- 3 3-26 3-15 **-** **-** 3-15 MIN. QFE PRESSURE IN HPA ****** ****** ****** 823.0 ****** ****** 822.3 827.8 828.1 830.2 ****** ****** 822.3 YEAR-DAY **-** **-** **-** 4-16 **-** **-** 3-25 3- 1 3- 6 3-27 **-** **-** 3-25 MEAN QNH PRESSURE IN HPA ****** ****** ****** 1017.7 ****** ****** 1012.2 1017.8 1019.6 1022.5 ****** ****** 1018.0 MAX. QNH PRESSURE IN HPA ****** ****** ****** 1023.4 ****** ****** 1018.2 1021.5 1026.2 1027.9 ****** ****** 1027.9 YEAR-DAY **-** **-** **-** 4-10 **-** **-** 3- 3 3- 3 3-26 3-15 **-** **-** 3-15 MIN. QNH PRESSURE IN HPA ****** ****** ****** 1008.8 ****** ****** 1008.0 1014.4 1014.8 1017.3 ****** ****** 1008.0 YEAR-DAY **-** **-** **-** 4-16 **-** **-** 3-25 3- 1 3- 6 3-27 **-** **-** 3-25 MEAN QFF PRESSURE IN HPA ****** ****** ****** 1010.6 ****** ****** 994.3 1001.9 1006.5 1011.5 ****** ****** 1004.9 MAX. QFF PRESSURE IN HPA ****** ****** ****** 1017.2 ****** ****** 1000.7 1007.6 1016.2 1017.1 ****** ****** 1017.2 YEAR-DAY **-** **-** **-** 4-10 **-** **-** 3- 3 3- 3 3-26 3-15 **-** **-** 4-10 MIN. QFF PRESSURE IN HPA ****** ****** ****** 998.9 ****** ****** 989.9 997.2 999.4 1006.0 ****** ****** 989.9 YEAR-DAY **-** **-** **-** 4-16 **-** **-** 3-24 3- 1 3- 7 3-27 **-** **-** 3-24 PRESSURE AT HOUR 2100 UTC. MEAN QFE PRESSURE IN HPA ****** ****** ****** 830.5 ****** ****** 826.0 830.8 832.0 834.5 ****** ****** 830.8 MAX. QFE PRESSURE IN HPA ****** ****** ****** 835.4 ****** ****** 831.0 834.3 837.6 839.0 ****** ****** 839.0 YEAR-DAY **-** **-** **-** 4-10 **-** **-** 3- 3 3- 3 3-22 3-15 **-** **-** 3-15 MIN. QFE PRESSURE IN HPA ****** ****** ****** 822.1 ****** ****** 822.4 828.3 827.6 830.9 ****** ****** 822.1 YEAR-DAY **-** **-** **-** 4-16 **-** **-** 3-30 3- 6 3- 6 3-25 **-** **-** 4-16 MEAN QNH PRESSURE IN HPA ****** ****** ****** 1017.6 ****** ****** 1012.3 1018.0 1019.4 1022.4 ****** ****** 1018.0 MAX. QNH PRESSURE IN HPA ****** ****** ****** 1023.4 ****** ****** 1018.2 1022.1 1026.0 1027.7 ****** ****** 1027.7 YEAR-DAY **-** **-** **-** 4-10 **-** **-** 3- 3 3- 3 3-22 3-15 **-** **-** 3-15 MIN. QNH PRESSURE IN HPA ****** ****** ****** 1007.7 ****** ****** 1008.1 1015.0 1014.2 1018.1 ****** ****** 1007.7 YEAR-DAY **-** **-** **-** 4-16 **-** **-** 3-30 3- 6 3- 6 3-25 **-** **-** 4-16 MEAN QFF PRESSURE IN HPA ****** ****** ****** 1010.5 ****** ****** 994.0 1001.9 1006.1 1011.3 ****** ****** 1004.8 MAX. QFF PRESSURE IN HPA ****** ****** ****** 1017.5 ****** ****** 1000.7 1007.2 1015.8 1016.3 ****** ****** 1017.5 YEAR-DAY **-** **-** **-** 4-10 **-** **-** 3- 2 3-30 3-26 3-15 **-** **-** 4-10 MIN. QFF PRESSURE IN HPA ****** ****** ****** 998.0 ****** ****** 989.6 996.8 998.8 1006.6 ****** ****** 989.6 YEAR-DAY **-** **-** **-** 4-16 **-** **-** 3-24 3- 6 3- 6 3- 1 **-** **-** 3-24 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION NATANZ (99421) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) FORM 1 LATITUDE 33 32 N LONGITUDE 51 54 E DATA PROCESSING CENTER ELEVATION 1684.9 M AVERAGE OF DRY BULB TEMPERATURE IN C. YEAR JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL 1992 -1.1 2.4 4.6 14.0 16.6 25.5 30.4 26.1 22.8 17.3 11.7 3.3 14.5 1993 -0.0 3.8 7.6 15.7 20.1 26.9 28.5 28.0 25.9 16.0 8.3 6.3 15.6 1994 4.8 4.6 10.5 16.9 21.0 27.2 30.4 30.6 21.9 15.9 12.3 2.7 16.6 1995 5.9 6.1 10.5 15.4 20.1 25.4 31.2 31.2 24.3 16.9 12.1 2.4 16.8 1996 -0.1 5.2 6.4 14.7 21.4 27.0 27.9 28.7 26.2 17.3 8.8 7.1 15.9 1997 5.2 4.4 7.2 15.6 20.8 26.7 31.5 30.8 24.4 19.6 9.3 4.8 16.7 1998 1.4 3.6 9.4 17.2 21.4 28.2 29.6 28.9 25.2 17.9 14.3 10.0 17.3 1999 2.7 8.4 9.0 16.1 23.4 28.7 28.0 29.6 25.0 19.6 9.3 6.0 17.1 2000 3.4 5.0 10.1 19.6 24.8 27.8 29.2 29.2 25.5 16.3 7.6 4.8 16.9 2001 2.6 5.9 12.6 19.5 23.4 27.9 28.8 29.7 24.8 19.1 11.2 7.2 17.7 2002 3.1 7.6 12.2 14.9 22.0 26.8 28.9 30.1 27.1 21.3 9.9 3.2 17.3 2003 4.6 5.8 9.0 16.1 20.1 26.6 30.6 27.3 22.9 19.6 9.1 4.0 16.3 2004 4.3 8.2 12.6 13.8 20.8 27.6 28.1 29.9 24.7 18.7 11.3 2.7 16.9 2005 2.3 2.9 11.5 16.7 20.4 27.4 30.8 28.7 25.9 19.7 9.5 8.3 17.0 MEAN 2.8 5.3 9.5 16.2 21.2 27.1 29.6 29.2 24.7 18.2 10.3 5.2 16.6 =============================================================================================== TEHRAN 2006,MAY M.(S & A) STATION NATANZ (99421) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) FORM 2 LATITUDE 33 32 N LONGITUDE 51 54 E DATA PROCESSING CENTER ELEVATION 1684.9 M AVERAGE OF MINIMUM TEMPERATURE IN C. YEAR JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL 1992 -5.6 -2.8 -0.5 8.1 11.0 18.8 23.7 19.6 16.3 11.1 6.3 -0.4 8.8 1993 -3.9 -0.8 2.4 9.7 13.5 19.6 21.5 20.7 18.9 9.8 3.8 1.4 9.7 1994 0.2 -0.9 5.0 10.7 14.4 19.7 23.3 23.3 15.5 10.9 7.0 -2.1 10.6 1995 0.4 0.9 4.2 9.8 13.9 18.4 24.6 23.9 17.7 10.6 6.0 -1.5 10.7 1996 -4.5 0.8 2.1 8.5 15.0 19.8 21.5 22.1 19.9 10.9 3.9 1.9 10.2 1997 0.1 -2.0 1.7 9.4 14.3 20.7 24.7 23.4 17.6 13.9 5.1 0.9 10.8 1998 -2.8 -1.0 3.7 10.6 14.3 20.5 23.2 22.6 18.8 11.8 8.7 4.7 11.3 1999 -1.1 2.7 4.1 9.9 16.1 21.2 21.7 23.0 18.5 14.0 4.7 1.4 11.3 2000 -1.4 -0.6 3.8 12.8 17.2 20.1 22.3 22.4 19.4 10.9 3.8 1.0 11.0 2001 -2.1 0.3 6.5 12.6 16.2 20.8 22.3 23.0 18.5 13.0 5.7 3.1 11.7 2002 -1.3 1.8 5.4 9.4 15.2 19.4 21.7 23.2 20.4 15.6 5.8 -1.1 11.3 2003 -0.1 0.4 3.0 10.6 13.1 19.7 25.3 21.5 17.6 14.9 3.7 0.3 10.8 2004 0.0 1.9 7.1 9.0 14.3 20.9 21.8 23.1 18.7 12.5 6.1 -1.7 11.1 2005 -2.4 -2.0 5.1 10.4 13.8 20.3 24.5 22.2 18.9 13.4 4.6 3.6 11.0 MEAN -1.7 -0.1 3.8 10.1 14.4 20.0 23.0 22.4 18.3 12.4 5.4 0.8 10.7 =============================================================================================== TEHRAN 2006,MAY M.(S & A) STATION NATANZ (99421) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) FORM 3 LATITUDE 33 32 N LONGITUDE 51 54 E DATA PROCESSING CENTER ELEVATION 1684.9 M AVERAGE OF MAXIMUM TEMPERATURE IN C. YEAR JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL 1992 2.4 7.0 8.3 17.7 20.0 28.9 33.7 29.7 26.0 20.6 14.9 5.8 17.9 1993 2.6 7.4 11.2 19.2 23.7 30.5 32.3 31.8 29.5 19.2 11.9 9.9 19.1 1994 8.1 8.6 14.0 20.4 24.7 31.1 34.4 34.4 25.3 18.8 15.5 5.9 20.1 1995 9.2 9.4 14.2 18.7 23.6 29.1 34.9 34.8 28.2 20.5 16.0 5.0 20.3 1996 3.1 8.6 9.6 18.8 24.8 30.6 31.3 32.1 29.7 20.9 11.8 10.6 19.3 1997 8.5 8.2 10.7 19.5 24.5 30.0 35.4 34.5 27.9 22.7 11.8 7.5 20.1 1998 4.2 7.1 13.2 21.2 25.1 31.6 33.5 32.5 28.6 21.3 17.8 13.3 20.8 1999 5.6 12.2 12.3 19.9 27.4 32.4 31.8 33.0 28.6 22.9 12.6 9.3 20.7 2000 7.0 8.8 13.8 23.5 28.9 31.9 32.9 33.0 29.4 19.8 9.9 7.7 20.5 2001 5.8 9.4 16.1 23.6 27.3 31.6 32.9 33.3 28.6 23.0 14.7 10.4 21.4 2002 6.3 11.4 16.5 18.7 26.0 30.6 33.0 34.0 30.8 24.7 12.7 6.2 20.9 2003 7.8 9.5 12.8 19.8 23.9 30.8 35.7 32.7 28.3 24.3 12.5 6.8 20.4 2004 7.4 12.0 15.9 18.1 25.3 31.7 32.3 34.3 28.3 22.0 14.7 6.0 20.7 2005 6.1 6.2 15.5 20.5 24.4 31.4 34.6 32.8 29.9 23.2 12.5 11.7 20.7 MEAN 6.0 9.0 13.1 20.0 25.0 30.9 33.5 33.1 28.5 21.7 13.5 8.3 20.2 =============================================================================================== TEHRAN 2006,MAY M.(S & A) STATION NATANZ (99421) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) FORM 4 LATITUDE 33 32 N LONGITUDE 51 54 E DATA PROCESSING CENTER ELEVATION 1684.9 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 8.0 9.8 8.8 9.6 9.0 10.1 10.0 10.1 9.7 9.5 8.6 6.2 9.1 1993 6.5 8.2 8.8 9.5 10.2 10.9 10.8 11.1 10.6 9.4 8.1 8.5 9.4 1994 7.9 9.5 9.0 9.7 10.3 11.4 11.1 11.1 9.8 7.9 8.5 8.0 9.5 1995 8.8 8.5 10.0 8.9 9.7 10.7 10.3 10.9 10.5 9.9 10.0 6.5 9.6 1996 7.6 7.8 7.5 10.3 9.8 10.8 9.8 10.0 9.8 10.0 7.9 8.7 9.1 1997 8.4 10.2 9.0 10.1 10.2 9.3 10.7 11.1 10.3 8.8 6.7 6.6 9.3 1998 7.0 8.1 9.5 10.6 10.8 11.1 10.3 9.9 9.8 9.5 9.1 8.6 9.5 1999 6.7 9.5 8.2 10.0 11.3 11.2 10.1 10.0 10.1 8.9 7.9 7.9 9.4 2000 8.4 9.4 10.0 10.7 11.7 11.8 10.6 10.6 10.0 8.9 6.1 6.7 9.5 2001 7.9 9.1 9.6 11.0 11.1 10.8 10.6 10.3 10.1 10.0 9.0 7.3 9.7 2002 7.6 9.6 11.1 9.3 10.8 11.2 11.3 10.8 10.4 9.1 6.9 7.3 9.6 2003 7.9 9.1 9.8 9.2 10.8 11.1 10.4 11.2 10.7 9.4 8.8 6.5 9.6 2004 7.4 10.1 8.8 9.1 11.0 10.8 10.5 11.2 9.6 9.5 8.6 7.7 9.6 2005 8.5 8.2 10.4 10.1 10.6 11.1 10.1 10.6 11.0 9.8 7.9 8.1 9.7 MEAN 7.7 9.1 9.3 9.9 10.6 10.9 10.5 10.7 10.2 9.3 8.1 7.5 9.5 =============================================================================================== TEHRAN 2006,MAY M.(S & A) STATION NATANZ (99421) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) FORM 5 LATITUDE 33 32 N LONGITUDE 51 54 E DATA PROCESSING CENTER ELEVATION 1684.9 M AVERAGE OF MEAN DAILY TEMPERATURE IN C. YEAR JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL 1992 -1.6 2.1 3.9 12.9 15.5 23.8 28.7 24.7 21.2 15.8 10.6 2.7 13.4 1993 -0.6 3.3 6.8 14.4 18.6 25.1 26.9 26.3 24.2 14.5 7.8 5.7 14.4 1994 4.2 3.8 9.5 15.5 19.5 25.4 28.9 28.9 20.4 14.9 11.3 1.9 15.3 1995 4.8 5.1 9.2 14.3 18.8 23.8 29.8 29.4 22.9 15.5 11.0 1.8 15.5 1996 -0.7 4.7 5.8 13.7 19.9 25.2 26.4 27.1 24.8 15.9 7.8 6.3 14.7 1997 4.3 3.1 6.2 14.4 19.4 25.3 30.0 29.0 22.8 18.3 8.4 4.2 15.5 1998 0.7 3.0 8.4 15.9 19.7 26.0 28.3 27.6 23.7 16.5 13.2 9.0 16.0 1999 2.2 7.5 8.2 14.9 21.7 26.8 26.8 28.0 23.5 18.4 8.6 5.3 16.0 2000 2.8 4.1 8.8 18.1 23.0 26.0 27.6 27.7 24.4 15.4 6.9 4.3 15.8 2001 1.9 4.9 11.3 18.1 21.8 26.2 27.6 28.2 23.5 18.0 10.2 6.8 16.5 2002 2.5 6.6 11.0 14.1 20.6 25.0 27.4 28.6 25.6 20.1 9.3 2.6 16.1 2003 3.8 5.0 7.9 15.2 18.5 25.3 30.5 27.1 22.9 19.6 8.1 3.5 15.6 2004 3.7 7.0 11.5 13.6 19.8 26.3 27.0 28.7 23.5 17.2 10.4 2.2 15.9 2005 1.8 2.1 10.3 15.5 19.1 25.9 29.6 27.5 24.4 18.3 8.5 7.6 15.9 MEAN 2.1 4.4 8.5 15.0 19.7 25.4 28.2 27.7 23.4 17.0 9.5 4.6 15.5 SD 2.03 1.70 2.23 1.54 1.80 0.87 1.34 1.23 1.36 1.80 1.73 2.29 1.66 =============================================================================================== TEHRAN 2006,MAY M.(S & A) STATION NATANZ (99421) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) FORM 6 LATITUDE 33 32 N LONGITUDE 51 54 E DATA PROCESSING CENTER ELEVATION 1684.9 M TEMPERATURE RECORDS LOWEST IN C. YEAR JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL 1992 -14.0 -6.5 -8.0 2.0 2.5 15.0 19.0 14.0 10.0 7.0 -6.0 -8.5 -14.0 DAY 26 27 12 1 5 9 12 31 30 8 27 29 1993 -9.0 -9.0 -4.0 6.0 7.0 15.0 19.0 17.0 13.5 5.0 -4.5 -3.2 -9.0 DAY 21 6 23 14 1 5 31 3 28 8 30 1 1994 -6.0 -8.5 0.0 2.0 8.0 12.0 18.0 19.4 8.4 8.0 1.4 -11.6 -11.6 DAY 25 19 15 5 7 5 1 26 20 30 10 7 1995 -4.0 -3.0 -1.0 4.4 7.6 10.0 21.0 20.0 9.0 5.2 -4.2 -6.0 -6.0 DAY 21 26 6 7 9 1 1 10 22 18 29 21 1996 -13.4 -5.6 -2.0 -0.4 10.4 15.6 16.6 18.2 15.0 5.4 -2.0 -3.6 -13.4 DAY 16 6 1 5 13 28 15 4 24 17 13 3 1997 -8.2 -9.8 -5.6 -2.0 7.0 16.5 21.0 19.0 11.4 7.0 0.8 -4.0 -9.8 DAY 29 7 9 12 6 20 7 29 15 25 28 29 1998 -7.4 -8.2 -5.8 2.8 6.8 15.0 18.0 18.0 14.4 4.0 4.0 1.0 -8.2 DAY 14 17 2 6 3 3 25 4 12 10 25 5 1999 -7.6 -2.0 -3.0 4.6 10.6 17.2 16.0 20.4 12.4 5.8 -4.2 -3.4 -7.6 DAY 3 22 19 9 21 17 28 20 28 27 30 1 2000 -7.4 -6.2 -3.4 7.6 12.6 11.4 18.8 15.5 15.0 6.0 0.0 -2.0 -7.4 DAY 18 9 4 2 2 14 20 20 25 5 19 27 2001 -12.0 -4.8 -1.4 7.6 8.0 12.2 18.0 17.4 12.4 7.4 -4.5 -1.2 -12.0 DAY 28 1 12 14 4 13 19 12 22 28 20 22 2002 -7.8 -3.5 -0.6 2.8 8.4 14.8 19.0 18.6 15.2 9.4 -1.4 -5.4 -7.8 DAY 14 5 7 4 5 7 9 14 26 23 30 24 2003 -8.6 -6.2 -8.5 1.2 5.0 13.2 20.6 18.6 12.6 11.8 -3.0 -8.0 -8.6 DAY 20 18 1 18 1 7 1 31 28 28 24 12 2004 -3.6 -4.6 -3.0 1.8 8.2 16.0 15.0 18.6 14.2 8.0 -4.4 -5.6 -5.6 DAY 1 24 16 18 14 1 13 28 29 29 29 3 2005 -9.2 -14.0 -2.0 0.0 8.0 13.6 20.0 16.0 15.0 4.4 1.2 -5.4 -14.0 DAY 13 11 27 6 6 9 29 31 30 24 12 31 1992-2005 -14.0 -14.0 -8.5 -2.0 2.5 10.0 15.0 14.0 8.4 4.0 -6.0 -11.6 -14.0 YEAR-DAY 92-26 5-11 3- 1 97-12 92- 5 95- 1 4-13 92-31 94-20 98-10 92-27 94- 7 92 =============================================================================================== TEHRAN 2006,MAY M.(S & A) STATION NATANZ (99421) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) FORM 7 LATITUDE 33 32 N LONGITUDE 51 54 E DATA PROCESSING CENTER ELEVATION 1684.9 M TEMPERATURE RECORDS HIGHEST IN C. YEAR JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL 1992 9.0 15.0 19.0 24.5 27.5 35.0 37.6 34.0 31.0 24.0 19.5 15.8 37.6 DAY 2 24 30 22 29 30 5 1 25 4 7 12 1993 12.6 17.8 18.6 27.4 29.2 35.0 36.2 35.8 34.4 28.0 22.0 16.0 36.2 DAY 29 28 31 20 31 30 3 14 3 1 1 18 1994 17.0 14.8 20.2 28.0 29.8 36.0 39.0 37.4 30.6 23.8 20.4 14.8 39.0 DAY 4 1 30 24 31 20 30 3 2 1 4 20 1995 14.0 13.0 22.6 24.0 29.6 35.2 38.6 37.0 31.8 28.8 22.2 10.0 38.6 DAY 17 4 25 3 7 21 16 5 12 4 10 29 1996 12.6 19.6 20.4 25.0 32.2 36.2 34.8 35.6 33.4 25.8 19.2 17.8 36.2 DAY 5 10 31 22 31 4 2 22 5 13 8 28 1997 15.6 17.8 16.8 26.6 29.4 35.0 38.2 38.6 33.2 30.2 19.2 13.2 38.6 DAY 7 22 23 27 30 16 30 14 2 6 4 9 1998 9.6 18.0 22.4 28.2 32.2 35.6 38.2 38.0 33.4 29.0 22.2 19.0 38.2 DAY 30 7 29 17 29 28 11 20 3 2 20 14 1999 13.8 16.2 20.6 23.2 33.0 37.4 38.4 34.8 32.8 28.6 19.0 16.2 38.4 DAY 9 8 31 30 31 28 4 29 11 12 1 30 2000 13.4 15.2 20.4 27.2 33.8 38.4 37.4 36.2 34.4 25.8 17.8 13.8 38.4 DAY 3 24 24 15 26 24 11 3 10 26 3 25 2001 13.8 16.0 24.0 27.0 33.4 37.4 39.2 36.2 33.2 28.5 22.6 18.0 39.2 DAY 15 28 31 4 15 28 10 21 5 6 7 29 2002 15.7 19.0 24.2 29.4 33.4 35.4 37.5 37.8 34.4 28.4 22.0 12.8 37.8 DAY 7 25 27 28 29 18 17 10 11 3 12 8 2003 18.2 16.0 20.6 28.2 28.4 36.4 39.6 35.8 33.0 29.0 20.4 17.4 39.6 DAY 12 3 25 6 22 23 17 6 7 3 11 19 2004 13.0 21.2 25.2 26.0 29.6 35.2 36.0 36.8 34.0 27.0 20.4 14.6 36.8 DAY 24 14 7 22 28 25 27 8 3 11 1 31 2005 16.6 17.4 22.0 29.6 27.4 39.0 39.8 38.4 34.6 27.6 21.4 19.0 39.8 DAY 1 21 10 26 17 22 18 7 3 8 5 4 1992-2005 18.2 21.2 25.2 29.6 33.8 39.0 39.8 38.6 34.6 30.2 22.6 19.0 39.8 YEAR-DAY 3-12 4-14 4- 7 5-26 0-26 5-22 5-18 97-14 5- 3 97- 6 1- 7 98-14 5 =============================================================================================== TEHRAN 2006,MAY M.(S & A) STATION NATANZ (99421) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) FORM 8 LATITUDE 33 32 N LONGITUDE 51 54 E DATA PROCESSING CENTER ELEVATION 1684.9 M 0C COOLING DEGREE DAYS (BASE 21) YEAR JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL 1992 0.0 0.0 0.0 0.0 3.8 75.0 221.1 104.9 26.8 0.0 0.0 0.0 431.7 1993 0.0 0.0 0.0 0.4 13.5 122.9 182.8 163.1 100.1 2.3 0.0 0.0 585.3 1994 0.0 0.0 0.0 2.0 16.8 133.6 243.8 244.1 21.7 0.0 0.0 0.0 662.2 1995 0.0 0.0 0.0 0.0 9.5 95.6 272.1 259.3 78.6 2.7 0.0 0.0 717.8 1996 0.0 0.0 0.0 0.0 33.3 125.7 166.6 189.7 116.8 0.0 0.0 0.0 632.1 1997 0.0 0.0 0.0 1.3 22.1 130.0 280.0 246.6 63.2 10.7 0.0 0.0 754.1 1998 0.0 0.0 0.0 5.0 27.9 151.3 227.1 204.2 84.0 7.3 0.0 0.0 706.8 1999 0.0 0.0 0.0 0.0 47.3 173.9 179.5 215.9 92.0 7.0 0.0 0.0 715.6 2000 0.0 0.0 0.0 1.2 71.0 157.0 204.8 206.2 102.5 0.0 0.0 0.0 742.8 2001 0.0 0.0 0.0 1.0 55.0 165.4 204.2 221.8 88.9 2.1 0.0 0.0 738.6 2002 0.0 0.0 0.0 1.5 43.5 119.8 197.1 234.8 138.4 25.0 0.0 0.0 760.2 2003 0.0 0.0 0.0 5.2 6.9 131.3 294.1 189.0 74.9 8.8 0.0 0.0 710.3 2004 0.0 0.0 0.0 0.0 20.5 158.3 188.1 238.3 86.6 2.7 0.0 0.0 694.5 2005 0.0 0.0 0.0 5.9 3.4 149.7 265.5 201.6 101.4 4.9 0.0 0.0 732.4 MEAN 0.0 0.0 0.0 1.7 26.8 135.0 223.4 208.6 84.0 5.3 0.0 0.0 684.8 =============================================================================================== TEHRAN 2006,MAY M.(S & A) STATION NATANZ (99421) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) FORM 9 LATITUDE 33 32 N LONGITUDE 51 54 E DATA PROCESSING CENTER ELEVATION 1684.9 M 0C HEATING DEGREE DAYS (BASE 18) YEAR JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL 1992 583.6 461.4 437.3 155.2 99.4 0.0 0.0 0.0 4.9 70.4 221.3 427.6 2461.2 1993 577.8 410.8 347.9 114.9 34.3 0.0 0.0 0.0 0.0 119.2 305.1 382.4 2292.5 1994 428.5 396.8 263.3 93.4 19.3 0.0 0.0 0.0 7.8 100.1 202.0 498.0 2009.2 1995 410.5 359.9 272.3 114.7 29.8 2.2 0.0 0.0 3.1 97.0 210.1 503.5 2003.2 1996 579.8 384.6 377.5 133.2 20.1 0.0 0.0 0.0 0.0 73.2 304.5 363.9 2236.8 1997 423.5 417.3 366.8 117.5 18.6 0.0 0.0 0.0 1.4 35.8 286.8 427.5 2095.3 1998 536.2 419.5 296.6 86.9 28.7 0.0 0.0 0.0 0.0 77.2 142.6 277.8 1865.5 1999 488.5 295.3 303.5 95.9 1.8 0.0 0.0 0.0 2.0 33.9 280.7 392.2 1893.8 2000 470.7 402.9 285.6 27.6 0.0 0.6 0.0 0.0 0.0 90.5 333.2 423.4 2034.4 2001 499.6 367.3 208.1 25.1 8.6 1.8 0.0 0.0 2.2 28.2 234.9 348.2 1724.0 2002 480.9 319.8 218.8 129.0 21.0 0.0 0.0 0.0 0.0 15.2 262.1 478.7 1925.6 2003 439.1 364.8 314.1 111.5 30.8 0.0 0.0 0.0 0.0 2.3 296.2 448.1 2006.9 2004 442.6 320.1 204.8 137.7 17.7 0.0 0.0 0.0 0.0 49.2 227.7 491.0 1890.8 2005 500.8 445.3 239.2 103.3 14.5 0.0 0.0 0.0 0.0 42.8 283.6 321.6 1951.0 MEAN 490.2 383.3 295.4 103.3 24.6 0.3 0.0 0.0 1.5 59.6 256.5 413.2 2027.9 =============================================================================================== TEHRAN 2006,MAY M.(S & A) STATION NATANZ (99421) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) FORM 10 LATITUDE 33 32 N LONGITUDE 51 54 E DATA PROCESSING CENTER ELEVATION 1684.9 M AVERAGE OF DEW POINT TEMPERATURE IN C. YEAR JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL 1992 ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** ****** 1993 ***** ***** -5.2 0.1 2.4 -0.0 3.3 1.3 -2.5 -5.5 -2.6 -4.2 ****** 1994 -4.2 -6.8 -3.7 -0.8 0.2 -0.5 4.3 1.0 -4.1 2.9 -1.2 -8.9 -1.8 1995 -6.0 -5.1 -6.7 0.8 3.4 4.5 6.4 -0.7 2.0 -1.7 -6.1 -4.5 -1.1 1996 -6.6 -0.9 -0.5 3.4 8.4 5.5 4.7 3.6 2.9 0.3 -4.1 -5.7 0.9 1997 -6.4 -12.3 -5.2 -3.0 1.9 5.6 7.3 1.2 1.6 1.7 -1.2 -2.0 -0.9 1998 -4.6 -3.9 -2.1 0.8 4.8 0.7 4.0 3.0 0.2 -1.1 -5.8 -5.2 -0.8 1999 -4.0 -6.4 -4.6 0.4 -2.0 -2.3 3.5 2.6 1.4 -2.3 -1.4 -4.6 -1.6 2000 -8.0 -7.9 -8.1 -1.2 1.8 1.2 2.1 0.8 2.6 2.8 0.1 -1.2 -1.3 2001 -5.8 -6.1 -3.9 -4.3 -1.9 -0.3 3.7 -0.4 -0.9 0.6 -4.9 -0.6 -2.1 2002 -5.6 -7.9 -6.6 1.7 1.6 1.3 2.7 1.9 -2.6 -2.0 0.2 -5.5 -1.7 2003 -6.0 -5.8 -5.0 1.4 -0.9 1.7 2.7 0.4 -1.0 -2.8 -5.1 -3.0 -2.0 2004 -2.2 -6.3 -2.8 0.0 2.3 1.0 3.8 1.8 -1.1 -0.8 -0.3 -4.8 -0.8 2005 -6.0 -4.5 -2.4 0.5 1.6 3.1 4.8 4.0 1.5 -0.5 -0.5 -2.4 -0.1 MEAN -5.4 -6.2 -4.4 -0.0 1.8 1.7 4.1 1.6 0.0 -0.7 -2.5 -4.0 -1.2 =============================================================================================== TEHRAN 2006,MAY M.(S & A) STATION NATANZ (99421) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) FORM 11 LATITUDE 33 32 N LONGITUDE 51 54 E DATA PROCESSING CENTER ELEVATION 1684.9 M AVERAGE OF MIXING RATIO IN G/KG YEAR JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL 1992 ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** 1993 ***** ***** 3.36 4.97 5.63 4.74 6.01 5.23 3.96 3.24 4.03 3.43 ***** 1994 3.47 2.90 3.74 4.56 4.91 4.71 6.49 5.35 3.66 5.98 4.48 2.58 4.40 1995 3.07 3.29 3.12 5.26 6.15 6.58 7.59 4.56 5.44 4.18 3.08 3.37 4.64 1996 2.97 4.43 4.59 6.11 8.46 7.12 6.58 6.15 5.80 4.85 3.50 3.14 5.31 1997 2.94 2.00 3.37 4.00 5.47 7.08 8.03 5.17 5.23 5.32 4.35 4.04 4.75 1998 3.37 3.56 4.19 5.12 6.61 5.13 6.37 6.05 4.95 4.38 3.11 3.28 4.68 1999 3.61 3.00 3.46 5.00 4.15 4.08 6.30 5.69 5.25 3.98 4.31 3.42 4.35 2000 2.67 2.68 2.66 4.47 5.41 5.30 5.61 5.05 5.72 5.75 4.77 4.34 4.54 2001 3.10 3.04 3.60 3.49 4.30 4.84 6.29 4.77 4.40 4.88 3.39 4.61 4.23 2002 3.18 2.66 3.12 5.48 5.29 5.16 5.79 5.56 3.92 4.04 4.82 3.30 4.36 2003 3.10 3.16 3.37 5.34 4.57 5.33 5.83 4.91 4.48 3.84 3.30 3.91 4.26 2004 4.06 2.98 3.84 4.80 5.62 5.07 6.28 5.45 4.40 4.45 4.81 3.40 4.60 2005 3.05 3.37 4.08 5.13 5.35 5.98 6.65 6.41 5.27 4.49 4.54 3.98 4.86 MEAN 3.22 3.09 3.58 4.90 5.53 5.47 6.45 5.41 4.81 4.57 4.04 3.60 4.56 =============================================================================================== TEHRAN 2006,MAY M.(S & A) STATION NATANZ (99421) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) FORM 12 LATITUDE 33 32 N LONGITUDE 51 54 E DATA PROCESSING CENTER ELEVATION 1684.9 M AVERAGE OF VAPOUR PRESSURE IN HPA YEAR JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL 1992 ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** 1993 ***** ***** 4.45 6.57 7.45 6.27 7.93 6.92 5.26 4.33 5.36 4.57 ***** 1994 4.62 3.84 4.95 6.06 6.50 6.21 8.52 7.05 4.87 7.95 5.95 3.43 5.83 1995 4.09 4.37 4.14 6.95 8.14 8.67 9.95 6.03 7.21 5.57 4.10 4.50 6.14 1996 3.95 5.87 6.06 8.08 11.15 9.37 8.69 8.12 7.68 6.45 4.68 4.19 7.02 1997 3.91 2.66 4.45 5.30 7.25 9.33 10.52 6.84 6.95 7.07 5.79 5.37 6.29 1998 4.47 4.72 5.55 6.77 8.74 6.80 8.40 7.99 6.57 5.84 4.15 4.38 6.20 1999 4.79 3.99 4.58 6.62 5.51 5.40 8.30 7.53 6.94 5.30 5.73 4.56 5.77 2000 3.55 3.56 3.53 5.93 7.15 6.99 7.41 6.68 7.57 7.64 6.35 5.77 6.01 2001 4.13 4.04 4.78 4.64 5.69 6.38 8.28 6.32 5.85 6.50 4.51 6.13 5.60 2002 4.23 3.54 4.14 7.23 7.00 6.82 7.64 7.33 5.21 5.39 6.42 4.38 5.78 2003 4.12 4.19 4.46 7.07 6.07 7.03 7.67 6.50 5.95 5.12 4.40 5.21 5.65 2004 5.38 3.97 5.11 6.36 7.43 6.71 8.29 7.19 5.86 5.94 6.39 4.52 6.09 2005 4.05 4.47 5.40 6.81 7.09 7.89 8.77 8.46 6.98 5.99 6.04 5.31 6.44 MEAN 4.27 4.10 4.74 6.49 7.32 7.22 8.49 7.15 6.38 6.08 5.38 4.79 6.03 =============================================================================================== TEHRAN 2006,MAY M.(S & A) STATION NATANZ (99421) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) FORM 13 LATITUDE 33 32 N LONGITUDE 51 54 E DATA PROCESSING CENTER ELEVATION 1684.9 M AVERAGE OF SATURATION DEFICIT PRESSURE IN HPA YEAR JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL 1992 ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** ***** 1993 ***** ***** 6.41 11.79 16.78 30.00 31.67 31.55 29.00 14.27 6.19 5.23 ***** 1994 4.29 4.99 8.13 13.94 18.94 30.49 35.95 37.49 21.85 10.39 8.69 4.38 16.63 1995 5.40 5.27 8.97 10.99 16.07 24.51 36.30 39.97 24.10 14.56 10.81 2.96 16.66 1996 2.54 3.39 3.94 9.45 15.23 27.09 29.41 31.94 27.03 13.84 7.08 6.20 14.76 1997 5.23 6.21 6.14 13.21 18.08 26.32 36.62 38.46 24.29 16.44 6.18 3.44 16.72 1998 2.43 3.66 7.01 13.80 17.75 32.01 34.08 32.88 26.08 15.61 12.47 8.25 17.17 1999 2.84 7.32 7.41 12.05 24.13 34.70 30.60 34.45 25.59 18.22 6.44 5.06 17.40 2000 4.62 5.52 9.33 17.46 24.94 31.67 33.88 34.61 25.82 11.46 4.32 2.93 17.21 2001 3.61 5.53 10.47 18.61 23.95 32.52 32.14 36.17 26.35 16.18 9.41 4.31 18.27 2002 3.80 7.41 10.67 10.65 20.44 29.25 33.07 36.17 31.29 20.55 6.28 3.55 17.76 2003 4.85 5.38 7.50 12.19 18.13 28.61 37.06 30.54 22.76 18.16 7.65 3.31 16.34 2004 3.07 7.36 10.69 10.05 18.00 31.03 30.63 36.01 26.34 16.16 7.52 3.10 16.66 2005 3.54 3.64 8.65 13.51 17.47 29.61 36.57 32.15 27.10 17.86 6.27 6.18 16.88 MEAN 3.85 5.47 8.10 12.90 19.22 29.83 33.69 34.80 25.97 15.67 7.64 4.53 16.81 =============================================================================================== TEHRAN 2006,MAY M.(S & A) STATION NATANZ (99421) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) FORM 14 LATITUDE 33 32 N LONGITUDE 51 54 E DATA PROCESSING CENTER ELEVATION 1684.9 M AVERAGE OF RELATIVE HUMIDITY IN PERCENT YEAR JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL 1992 *** *** *** *** *** *** *** *** *** *** *** *** *** 1993 *** *** 44 41 33 19 21 19 17 25 50 50 *** 1994 55 47 42 33 28 18 21 17 19 46 42 45 34 1995 45 48 34 42 38 29 23 14 25 30 29 64 35 1996 64 69 66 49 46 28 24 22 23 34 42 42 42 1997 46 30 46 30 31 27 24 16 23 32 51 64 35 1998 67 62 49 36 37 19 21 22 22 31 27 38 36 1999 65 38 44 37 20 15 24 19 23 25 51 51 34 2000 46 43 29 26 23 20 19 17 24 45 62 69 35 2001 58 45 36 21 22 19 22 16 20 31 36 62 32 2002 56 36 31 47 28 20 21 18 15 22 55 57 34 2003 54 48 40 43 27 21 18 19 23 23 39 65 35 2004 65 38 42 43 33 19 23 18 20 29 47 62 37 2005 59 62 41 37 31 23 21 23 22 27 53 49 37 MEAN 57 47 42 37 31 21 22 18 21 31 45 55 35 =============================================================================================== TEHRAN 2006,MAY M.(S & A) STATION NATANZ (99421) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) FORM 15 LATITUDE 33 32 N LONGITUDE 51 54 E DATA PROCESSING CENTER ELEVATION 1684.9 M AVERAGE OF MAXIMUM RELATIVE HUMIDITY IN PERCENT YEAR JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL 1992 *** *** *** *** *** *** *** *** *** *** *** *** *** 1993 *** *** 59 53 46 27 32 29 24 34 64 61 *** 1994 67 61 56 48 41 26 29 23 28 58 56 57 46 1995 58 63 49 57 49 40 29 19 32 40 38 74 46 1996 75 81 81 62 58 36 33 30 28 42 54 51 53 1997 57 40 61 45 43 35 30 23 30 42 64 77 46 1998 81 78 65 50 48 26 30 31 30 40 35 47 47 1999 78 51 55 49 29 22 34 25 30 32 63 63 44 2000 58 58 43 35 30 27 26 24 30 55 75 80 45 2001 70 59 48 32 31 26 31 22 26 38 47 72 42 2002 68 46 45 62 38 28 31 25 20 28 67 70 44 2003 62 61 59 59 38 30 25 26 30 30 51 74 45 2004 78 50 51 60 46 27 32 25 27 37 60 75 47 2005 76 74 57 51 44 30 28 31 28 34 66 62 48 MEAN 69 60 56 51 42 29 30 26 28 39 57 66 46 =============================================================================================== TEHRAN 2006,MAY M.(S & A) STATION NATANZ (99421) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) FORM 16 LATITUDE 33 32 N LONGITUDE 51 54 E DATA PROCESSING CENTER ELEVATION 1684.9 M AVERAGE OF MINIMUM RELATIVE HUMIDITY IN PERCENT YEAR JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL 1992 *** *** *** *** *** *** *** *** *** *** *** *** *** 1993 *** *** 33 32 26 14 15 14 12 18 41 40 *** 1994 45 36 32 23 20 13 15 12 14 37 33 35 26 1995 33 36 25 33 31 22 18 10 20 24 24 56 28 1996 54 59 55 39 38 22 18 17 20 28 33 34 35 1997 37 24 37 21 23 22 19 12 19 26 42 53 28 1998 53 50 39 27 29 14 16 16 17 25 21 31 28 1999 54 29 35 28 15 10 17 15 18 20 42 41 27 2000 36 33 21 20 19 15 14 13 19 37 53 57 28 2001 49 36 28 15 16 15 16 12 15 25 28 53 26 2002 45 28 20 35 23 15 15 14 11 18 47 46 26 2003 47 36 28 34 19 15 13 13 16 17 31 57 27 2004 53 28 35 32 23 14 18 14 16 23 38 49 29 2005 46 52 30 29 22 18 16 18 17 22 45 38 29 MEAN 46 37 32 28 23 16 16 14 16 25 37 45 28 RH=0 =====> RELATIVE HUMIDITY < 0.5% =============================================================================================== TEHRAN 2006,MAY M.(S & A) STATION NATANZ (99421) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) FORM 17 LATITUDE 33 32 N LONGITUDE 51 54 E DATA PROCESSING CENTER ELEVATION 1684.9 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 *** *** *** *** *** *** *** *** *** *** *** *** *** 1993 *** *** 52 48 43 26 31 29 23 33 59 58 *** 1994 60 57 54 44 37 25 29 23 27 55 51 51 43 1995 52 57 46 53 48 39 29 18 31 39 35 66 43 1996 69 72 73 59 55 35 33 29 27 41 52 49 50 1997 51 38 58 39 40 34 30 22 30 39 60 69 43 1998 76 74 61 47 46 26 30 31 28 38 30 42 44 1999 71 47 51 47 29 22 34 25 29 31 60 56 42 2000 50 55 42 34 29 27 26 24 30 53 70 72 43 2001 63 54 46 31 30 26 31 21 26 38 43 65 40 2002 62 44 41 57 37 28 31 25 20 27 62 66 42 2003 57 57 55 53 38 30 24 25 28 27 49 71 43 2004 71 46 48 53 45 26 32 24 26 36 57 70 45 2005 65 71 55 48 43 30 28 31 28 33 65 58 46 MEAN 62 56 52 47 40 29 30 25 27 38 53 61 43 =============================================================================================== TEHRAN 2006,MAY M.(S & A) STATION NATANZ (99421) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) FORM 18 LATITUDE 33 32 N LONGITUDE 51 54 E DATA PROCESSING CENTER ELEVATION 1684.9 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 *** *** *** *** *** *** *** *** *** *** *** *** *** 1993 *** *** 41 37 30 17 18 16 14 21 45 44 *** 1994 51 43 37 27 24 16 19 15 16 40 36 38 30 1995 38 43 30 36 34 26 21 13 24 25 27 61 32 1996 59 67 61 43 42 26 21 19 21 31 35 36 38 1997 42 28 42 27 28 25 22 14 21 27 44 58 32 1998 63 55 43 32 33 17 19 19 18 28 24 34 32 1999 60 34 40 33 17 13 21 16 20 22 45 44 30 2000 43 39 25 23 21 18 17 15 21 40 58 66 32 2001 53 41 32 19 19 17 20 15 17 27 31 59 29 2002 51 32 24 44 26 18 18 17 13 19 50 51 30 2003 50 43 38 39 23 19 17 16 19 19 33 60 31 2004 60 34 40 40 28 17 21 16 18 25 41 54 33 2005 52 56 35 32 26 21 19 21 19 24 48 43 33 MEAN 52 43 38 33 27 19 19 16 19 27 40 50 32 =============================================================================================== TEHRAN 2006,MAY M.(S & A) STATION NATANZ (99421) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) FORM 19 LATITUDE 33 32 N LONGITUDE 51 54 E DATA PROCESSING CENTER ELEVATION 1684.9 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 *** *** *** *** *** *** *** *** *** *** *** *** *** 1993 *** *** 46 41 32 16 17 16 17 27 53 55 *** 1994 61 50 42 34 27 15 17 14 18 49 46 52 35 1995 50 50 34 44 36 25 19 13 24 31 31 71 36 1996 70 72 70 52 46 26 20 19 24 34 44 46 44 1997 48 28 43 33 30 27 21 14 23 35 54 72 36 1998 69 65 49 35 35 16 18 20 22 33 31 42 36 1999 68 38 44 36 18 11 20 17 23 27 56 59 35 2000 50 42 27 26 22 17 15 15 23 46 68 74 35 2001 66 47 35 20 20 17 17 14 19 31 39 67 33 2002 62 37 31 46 26 17 16 15 15 24 61 59 34 2003 59 46 36 45 22 17 14 14 20 23 40 70 34 2004 72 38 41 40 29 16 19 14 19 29 53 69 37 2005 68 64 40 34 27 19 17 19 20 28 54 53 37 MEAN 62 48 41 37 28 18 18 16 21 32 48 61 36 =============================================================================================== TEHRAN 2006,MAY M.(S & A) STATION NATANZ (99421) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) FORM 20 LATITUDE 33 32 N LONGITUDE 51 54 E DATA PROCESSING CENTER ELEVATION 1684.9 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 0 0 0 11 27 17 1 0 0 0 56 1993 0 0 0 0 0 18 29 27 15 0 0 0 89 1994 0 0 0 0 0 20 29 31 2 0 0 0 82 1995 0 0 0 0 0 15 31 31 12 0 0 0 89 1996 0 0 0 0 4 17 22 27 18 0 0 0 88 1997 0 0 0 0 0 17 31 31 6 1 0 0 86 1998 0 0 0 0 5 24 28 25 9 0 0 0 91 1999 0 0 0 0 5 27 21 31 16 0 0 0 100 2000 0 0 0 0 11 21 29 30 14 0 0 0 105 2001 0 0 0 0 7 22 30 28 12 0 0 0 99 2002 0 0 0 0 9 17 28 29 24 0 0 0 107 2003 0 0 0 0 0 19 31 31 12 0 0 0 93 2004 0 0 0 0 0 24 26 31 13 0 0 0 94 2005 0 0 0 0 0 20 31 26 16 0 0 0 93 MEAN 0.0 0.0 0.0 0.0 2.9 19.4 28.1 28.2 12.1 0.1 0.0 0.0 90.8 =============================================================================================== TEHRAN 2006,MAY M.(S & A) STATION NATANZ (99421) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) FORM 21 LATITUDE 33 32 N LONGITUDE 51 54 E DATA PROCESSING CENTER ELEVATION 1684.9 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 9 0 2 0 0 0 0 0 0 0 0 2 13 1993 12 0 0 0 0 0 0 0 0 0 0 0 12 1994 0 1 0 0 0 0 0 0 0 0 0 3 4 1995 0 0 0 0 0 0 0 0 0 0 0 1 1 1996 9 0 0 0 0 0 0 0 0 0 0 0 9 1997 0 0 1 0 0 0 0 0 0 0 0 0 1 1998 1 2 1 0 0 0 0 0 0 0 0 0 4 1999 0 0 0 0 0 0 0 0 0 0 0 0 0 2000 1 1 0 0 0 0 0 0 0 0 0 0 2 2001 5 0 0 0 0 0 0 0 0 0 0 0 5 2002 1 0 0 0 0 0 0 0 0 0 0 1 2 2003 4 1 0 0 0 0 0 0 0 0 0 2 7 2004 0 0 1 0 0 0 0 0 0 0 0 0 1 2005 1 6 0 0 0 0 0 0 0 0 0 0 7 MEAN 3.1 0.8 0.4 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.6 4.9 =============================================================================================== TEHRAN 2006,MAY M.(S & A) STATION NATANZ (99421) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) FORM 22 LATITUDE 33 32 N LONGITUDE 51 54 E DATA PROCESSING CENTER ELEVATION 1684.9 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 0 0 7 27 8 0 0 0 0 42 1993 0 0 0 0 0 12 21 16 11 0 0 0 60 1994 0 0 0 0 0 10 28 29 0 0 0 0 67 1995 0 0 0 0 0 9 31 29 6 0 0 0 75 1996 0 0 0 0 1 11 20 24 12 0 0 0 68 1997 0 0 0 0 1 15 31 29 4 0 0 0 80 1998 0 0 0 0 0 13 24 23 7 0 0 0 67 1999 0 0 0 0 1 16 21 29 7 0 0 0 74 2000 0 0 0 0 1 13 20 24 9 0 0 0 67 2001 0 0 0 0 2 18 24 25 5 0 0 0 74 2002 0 0 0 0 0 9 19 27 11 0 0 0 66 2003 0 0 0 0 0 12 30 17 3 0 0 0 62 2004 0 0 0 0 1 15 22 27 10 0 0 0 75 2005 0 0 0 0 0 13 30 21 5 0 0 0 69 MEAN 0.0 0.0 0.0 0.0 0.5 12.4 24.9 23.4 6.4 0.0 0.0 0.0 67.6 =============================================================================================== TEHRAN 2006,MAY M.(S & A) STATION NATANZ (99421) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) FORM 23 LATITUDE 33 32 N LONGITUDE 51 54 E DATA PROCESSING CENTER ELEVATION 1684.9 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 18 14 6 0 0 0 0 0 0 0 1 4 43 1993 21 5 1 0 0 0 0 0 0 0 1 0 28 1994 1 4 0 0 0 0 0 0 0 0 0 12 17 1995 3 0 0 0 0 0 0 0 0 0 1 5 9 1996 17 2 0 0 0 0 0 0 0 0 0 0 19 1997 2 11 1 0 0 0 0 0 0 0 0 1 15 1998 11 6 2 0 0 0 0 0 0 0 0 0 19 1999 7 0 0 0 0 0 0 0 0 0 1 0 8 2000 10 4 0 0 0 0 0 0 0 0 0 0 14 2001 6 1 0 0 0 0 0 0 0 0 1 0 8 2002 9 0 0 0 0 0 0 0 0 0 0 7 16 2003 5 1 3 0 0 0 0 0 0 0 0 5 14 2004 0 1 0 0 0 0 0 0 0 0 1 5 7 2005 7 10 0 0 0 0 0 0 0 0 0 3 20 MEAN 8.4 4.2 0.9 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.4 3.0 16.9 =============================================================================================== TEHRAN 2006,MAY M.(S & A) STATION NATANZ (99421) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) FORM 24 LATITUDE 33 32 N LONGITUDE 51 54 E DATA PROCESSING CENTER ELEVATION 1684.9 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 31 26 17 0 0 0 0 0 0 0 4 17 95 1993 28 17 7 0 0 0 0 0 0 0 7 10 69 1994 18 21 3 0 0 0 0 0 0 0 0 20 62 1995 15 11 3 0 0 0 0 0 0 0 5 25 59 1996 23 13 6 1 0 0 0 0 0 0 4 8 55 1997 14 17 8 1 0 0 0 0 0 0 0 13 53 1998 28 22 6 0 0 0 0 0 0 0 0 0 56 1999 19 5 1 0 0 0 0 0 0 0 2 10 37 2000 20 18 8 0 0 0 0 0 0 0 1 7 54 2001 23 15 2 0 0 0 0 0 0 0 3 4 47 2002 21 11 3 0 0 0 0 0 0 0 1 19 55 2003 17 12 5 0 0 0 0 0 0 0 7 15 56 2004 18 12 4 0 0 0 0 0 0 0 6 24 64 2005 26 20 3 1 0 0 0 0 0 0 0 5 55 MEAN 21.5 15.7 5.4 0.2 0.0 0.0 0.0 0.0 0.0 0.0 2.9 12.6 58.3 =============================================================================================== TEHRAN 2006,MAY M.(S & A) STATION NATANZ (99421) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) FORM 25 LATITUDE 33 32 N LONGITUDE 51 54 E DATA PROCESSING CENTER ELEVATION 1684.9 M MONTHLY TOTAL OF PRECIPITATION IN MM. YEAR JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL 1992 47.8 16.0 47.9 33.5 84.7 1.0 0.0 3.0 0.0 0.0 0.0 20.1 254.0 1993 21.1 40.8 48.1 30.7 10.3 0.0 0.0 0.2 0.3 0.0 25.4 0.3 177.2 1994 14.4 39.4 50.5 10.6 11.4 0.0 0.0 0.0 0.0 16.9 18.4 5.6 167.2 1995 2.0 22.3 32.0 49.7 59.0 7.3 0.0 0.0 0.3 0.0 0.0 19.8 192.4 1996 40.0 60.3 121.5 14.0 21.9 4.4 0.0 0.0 0.0 0.1 0.7 8.0 270.9 1997 4.2 1.1 45.4 11.7 16.6 7.3 0.0 0.0 0.0 12.7 5.9 29.4 134.3 1998 20.6 61.3 85.2 7.4 21.3 0.0 0.5 9.4 0.2 12.0 0.2 2.9 221.0 1999 48.1 2.3 71.9 13.6 1.0 0.0 4.0 0.0 0.0 0.0 18.4 15.9 175.2 2000 26.8 9.7 2.2 2.9 0.0 0.0 0.0 0.0 0.0 35.8 56.8 59.9 194.1 2001 41.7 12.1 10.7 0.0 12.9 9.9 2.0 0.0 0.2 0.0 7.0 17.6 114.1 2002 58.4 5.6 14.0 131.2 2.0 0.0 0.0 0.0 0.0 0.6 43.3 8.2 263.3 2003 56.6 17.9 36.2 39.7 8.5 0.0 0.0 0.0 0.0 0.0 10.3 44.6 213.8 2004 40.6 8.9 32.7 36.6 15.2 0.0 0.0 0.0 0.0 0.0 11.5 37.2 182.7 2005 53.7 27.1 7.3 19.0 12.5 0.0 0.3 0.3 0.2 0.0 34.1 19.0 173.5 MEAN 34.0 23.2 43.3 28.6 19.8 2.1 0.5 0.9 0.1 5.6 16.6 20.6 195.3 =============================================================================================== TEHRAN 2006,MAY M.(S & A) STATION NATANZ (99421) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) FORM 26 LATITUDE 33 32 N LONGITUDE 51 54 E DATA PROCESSING CENTER ELEVATION 1684.9 M GREATEST DAILY OF PRECIPITATION IN MM. YEAR JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL 1992 20.0 13.0 15.0 16.0 26.0 1.0 0.0 3.0 0.0 0.0 0.0 8.0 26.0 DAY 25 25 18 25 7 15 ** 13 ** ** ** 9 1993 7.2 10.0 20.0 9.5 8.0 0.0 0.0 0.2 0.3 0.0 16.0 0.3 20.0 DAY 7 3 9 27 6 ** ** 28 27 ** 12 16 1994 7.0 29.0 28.3 3.2 5.0 0.0 0.0 0.0 0.0 4.8 10.7 2.0 29.0 DAY 5 1 27 18 16 ** ** ** ** 16 17 3 1995 2.0 8.0 27.0 15.0 25.0 6.0 0.0 0.0 0.3 0.0 0.0 5.4 27.0 DAY 1 24 21 13 29 6 ** ** 22 ** ** 12 1996 15.0 21.0 35.0 3.1 8.0 4.0 0.0 0.0 0.0 0.1 0.7 5.0 35.0 DAY 13 5 4 4 22 28 ** ** ** 15 22 15 1997 2.0 1.0 10.1 8.0 4.0 4.0 0.0 0.0 0.0 11.0 2.4 16.0 16.0 DAY 16 1 13 5 19 14 ** ** ** 24 1 21 1998 5.0 30.0 26.0 3.0 8.0 0.0 0.5 5.0 0.2 8.0 0.2 2.0 30.0 DAY 13 10 18 6 14 ** 25 4 14 10 13 4 1999 19.0 1.0 29.0 5.0 1.0 0.0 3.0 0.0 0.0 0.0 8.0 9.0 29.0 DAY 25 6 2 29 14 ** 28 ** ** ** 9 12 2000 16.0 5.5 2.0 2.0 0.0 0.0 0.0 0.0 0.0 33.0 37.0 20.5 37.0 DAY 29 14 25 18 ** ** ** ** ** 4 6 11 2001 20.0 6.0 7.0 0.0 11.0 6.0 2.0 0.0 0.2 0.0 7.0 5.0 20.0 DAY 27 19 10 ** 3 14 19 ** 20 ** 13 1 2002 33.0 5.0 6.0 50.0 2.0 0.0 0.0 0.0 0.0 0.6 14.6 3.0 50.0 DAY 8 20 28 3 3 ** ** ** ** 22 16 10 2003 24.0 7.0 16.0 13.0 6.0 0.0 0.0 0.0 0.0 0.0 7.0 13.0 24.0 DAY 19 25 26 23 30 ** ** ** ** ** 29 4 2004 9.8 4.0 10.0 11.0 11.0 0.0 0.0 0.0 0.0 0.0 4.0 14.0 14.0 DAY 13 7 15 4 4 ** ** ** ** ** 9 9 2005 23.3 9.3 2.6 11.0 3.0 0.0 0.3 0.3 0.2 0.0 15.0 11.0 23.3 DAY 12 8 14 17 27 ** 24 11 1 ** 8 18 1992-2005 33.0 30.0 35.0 50.0 26.0 6.0 3.0 5.0 0.3 33.0 37.0 20.5 50.0 YEAR-DAY 2- 8 98-10 96- 4 2- 3 92- 7 95- 6 99-28 98- 4 93-27 0- 4 0- 6 0-11 2 =============================================================================================== TEHRAN 2006,MAY M.(S & A) STATION NATANZ (99421) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) FORM 27 LATITUDE 33 32 N LONGITUDE 51 54 E DATA PROCESSING CENTER ELEVATION 1684.9 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 2 1 4 0 0 0 0 0 0 0 9 1993 0 2 1 0 0 0 0 0 0 0 1 0 4 1994 0 1 1 0 0 0 0 0 0 0 1 0 3 1995 0 0 1 1 2 0 0 0 0 0 0 0 4 1996 2 2 6 0 0 0 0 0 0 0 0 0 10 1997 0 0 1 0 0 0 0 0 0 1 0 1 3 1998 0 2 3 0 0 0 0 0 0 0 0 0 5 1999 2 0 3 0 0 0 0 0 0 0 0 0 5 2000 2 0 0 0 0 0 0 0 0 1 2 2 7 2001 2 0 0 0 1 0 0 0 0 0 0 0 3 2002 2 0 0 4 0 0 0 0 0 0 2 0 8 2003 2 0 1 2 0 0 0 0 0 0 0 1 6 2004 0 0 1 2 1 0 0 0 0 0 0 1 5 2005 2 0 0 1 0 0 0 0 0 0 1 1 5 MEAN 1.1 0.6 1.4 0.8 0.6 0.0 0.0 0.0 0.0 0.1 0.5 0.4 5.5 =============================================================================================== TEHRAN 2006,MAY M.(S & A) STATION NATANZ (99421) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) FORM 28 LATITUDE 33 32 N LONGITUDE 51 54 E DATA PROCESSING CENTER ELEVATION 1684.9 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 3 1 4 3 5 0 0 0 0 0 0 2 18 1993 2 4 3 2 1 0 0 0 0 0 1 0 13 1994 1 2 3 0 1 0 0 0 0 0 2 0 9 1995 0 3 1 4 4 1 0 0 0 0 0 2 15 1996 3 4 8 0 1 0 0 0 0 0 0 1 17 1997 0 0 3 1 0 0 0 0 0 1 0 3 8 1998 2 3 6 0 2 0 0 1 0 1 0 0 15 1999 2 0 4 1 0 0 0 0 0 0 2 2 11 2000 2 1 0 0 0 0 0 0 0 1 2 3 9 2001 3 2 1 0 1 1 0 0 0 0 1 1 10 2002 4 1 1 6 0 0 0 0 0 0 4 0 16 2003 5 1 3 3 1 0 0 0 0 0 1 4 18 2004 4 0 3 2 1 0 0 0 0 0 0 3 13 2005 4 2 0 2 0 0 0 0 0 0 2 2 12 MEAN 2.5 1.7 2.9 1.7 1.2 0.1 0.0 0.1 0.0 0.2 1.1 1.6 13.1 =============================================================================================== TEHRAN 2006,MAY M.(S & A) STATION NATANZ (99421) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) FORM 29 LATITUDE 33 32 N LONGITUDE 51 54 E DATA PROCESSING CENTER ELEVATION 1684.9 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 7 2 6 5 13 1 0 1 0 0 0 4 39 1993 6 8 7 7 2 0 0 0 0 0 4 0 34 1994 3 3 6 3 3 0 0 0 0 6 2 2 28 1995 1 4 3 7 5 1 0 0 0 0 0 6 27 1996 6 8 12 5 6 1 0 0 0 0 0 2 40 1997 2 1 9 2 6 1 0 0 0 2 2 4 29 1998 7 7 9 3 5 0 0 2 0 2 0 1 36 1999 8 2 6 4 1 0 2 0 0 0 4 3 30 2000 2 3 1 1 0 0 0 0 0 1 6 10 24 2001 6 2 3 0 2 3 1 0 0 0 1 5 23 2002 4 1 4 6 1 0 0 0 0 0 7 3 26 2003 6 4 8 5 2 0 0 0 0 0 2 8 35 2004 7 4 7 7 3 0 0 0 0 0 3 7 38 2005 6 6 5 4 5 0 0 0 0 0 7 3 36 MEAN 5.1 3.9 6.1 4.2 3.9 0.5 0.2 0.2 0.0 0.8 2.7 4.1 31.7 =============================================================================================== TEHRAN 2006,MAY M.(S & A) STATION NATANZ (99421) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) FORM 30 LATITUDE 33 32 N LONGITUDE 51 54 E DATA PROCESSING CENTER ELEVATION 1684.9 M NO. OF DAYS WITH PRECIPITATION YEAR JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL 1992 8 2 8 8 15 1 1 1 0 0 0 9 53 1993 9 9 10 7 7 0 0 1 1 0 5 1 50 1994 3 4 8 8 6 0 0 0 0 9 4 5 47 1995 1 9 3 10 5 3 0 0 1 0 0 11 43 1996 6 12 16 8 13 2 0 0 0 3 1 2 63 1997 3 2 11 6 13 9 0 0 0 7 7 9 67 1998 9 12 9 6 7 0 1 4 2 4 1 4 59 1999 13 5 11 10 1 0 2 0 0 0 6 6 54 2000 6 4 2 5 0 0 0 0 1 5 7 11 41 2001 7 4 5 0 4 5 1 1 1 0 3 7 38 2002 6 2 7 13 2 0 0 0 0 1 10 6 47 2003 7 9 8 10 3 0 0 0 0 0 2 12 51 2004 10 4 8 9 4 0 1 0 0 0 9 9 54 2005 8 9 6 6 12 0 1 1 1 0 7 4 55 MEAN 6.9 6.2 8.0 7.6 6.6 1.4 0.5 0.6 0.5 2.1 4.4 6.9 51.7 =============================================================================================== TEHRAN 2006,MAY M.(S & A) STATION NATANZ (99421) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) FORM 31 LATITUDE 33 32 N LONGITUDE 51 54 E DATA PROCESSING CENTER ELEVATION 1684.9 M NO. OF DAYS WITH THUNDER STORM YEAR JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL 1992 0 0 0 1 2 1 0 0 0 0 0 0 4 1993 0 0 0 3 2 0 0 1 0 0 1 0 7 1994 0 0 1 2 4 0 0 1 0 3 0 0 11 1995 0 1 0 2 1 1 0 0 0 0 0 0 5 1996 0 1 1 0 5 1 0 0 0 0 0 0 8 1997 0 0 0 0 2 2 0 0 0 1 0 0 5 1998 0 0 0 2 2 0 0 1 2 0 0 0 7 1999 1 0 0 3 1 0 1 0 0 0 0 0 6 2000 0 0 0 0 0 0 0 0 1 0 0 1 2 2001 0 1 0 0 1 1 0 0 0 0 0 0 3 2002 0 0 0 1 0 0 0 0 0 0 1 0 2 2003 0 0 1 2 3 1 0 0 0 0 0 0 7 2004 1 0 1 1 1 0 0 0 0 0 0 0 4 2005 0 0 0 1 7 0 0 0 0 0 0 0 8 MEAN 0.1 0.2 0.3 1.3 2.2 0.5 0.1 0.2 0.2 0.3 0.1 0.1 5.6 =============================================================================================== TEHRAN 2006,MAY M.(S & A) STATION NATANZ (99421) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) FORM 32 LATITUDE 33 32 N LONGITUDE 51 54 E DATA PROCESSING CENTER ELEVATION 1684.9 M NO. OF DAYS WITH SNOW OR SLEET YEAR JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL 1992 6 2 3 0 0 0 0 0 0 0 0 7 18 1993 7 2 2 0 0 0 0 0 0 0 0 0 11 1994 1 2 0 0 0 0 0 0 0 0 0 2 5 1995 0 1 0 0 0 0 0 0 0 0 0 5 6 1996 2 6 3 0 0 0 0 0 0 0 0 0 11 1997 3 1 4 0 0 0 0 0 0 0 0 2 10 1998 5 6 2 0 0 0 0 0 0 0 0 0 13 1999 5 0 2 0 0 0 0 0 0 0 0 0 7 2000 1 2 0 0 0 0 0 0 0 0 0 2 5 2001 7 1 0 0 0 0 0 0 0 0 0 0 8 2002 2 1 0 0 0 0 0 0 0 0 1 0 4 2003 3 2 0 0 0 0 0 0 0 0 0 4 9 2004 2 1 2 0 0 0 0 0 0 0 0 5 10 2005 6 9 0 0 0 0 0 0 0 0 0 0 15 MEAN 3.6 2.6 1.3 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.1 1.9 9.5 =============================================================================================== TEHRAN 2006,MAY M.(S & A) STATION NATANZ (99421) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) FORM 33 LATITUDE 33 32 N LONGITUDE 51 54 E DATA PROCESSING CENTER ELEVATION 1684.9 M NO. OF DAYS WITH DUST YEAR JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL 1992 1 0 0 0 0 0 0 0 0 0 2 1 4 1993 0 1 0 0 0 0 1 0 0 0 0 0 2 1994 0 0 0 3 2 0 2 0 0 0 0 0 7 1995 0 0 1 0 0 0 0 0 1 0 0 0 2 1996 0 0 0 0 0 1 0 0 2 0 0 0 3 1997 0 0 0 1 0 0 0 0 0 0 0 0 1 1998 0 0 1 1 1 2 0 0 0 0 0 0 5 1999 0 0 0 1 2 1 0 0 0 1 0 0 5 2000 0 0 2 1 4 1 0 0 0 0 0 0 8 2001 0 0 0 2 1 0 2 1 0 0 1 1 8 2002 0 1 2 1 1 0 1 0 0 0 0 0 6 2003 0 0 2 0 0 0 0 0 0 1 0 0 3 2004 0 1 0 1 1 0 0 0 0 0 0 0 3 2005 0 1 0 3 3 0 1 0 0 0 1 0 9 MEAN 0.1 0.3 0.6 1.0 1.1 0.4 0.5 0.1 0.2 0.1 0.3 0.1 4.8 =============================================================================================== TEHRAN 2006,MAY M.(S & A) STATION NATANZ (99421) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) FORM 34 LATITUDE 33 32 N LONGITUDE 51 54 E DATA PROCESSING CENTER ELEVATION 1684.9 M PREVAILING WIND DIRECTION , SPEED (IN KNOTS) AND PERCENT YEAR JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL 1992 45 45 45 360 360 45 45 90 360 45 225 90 45 PREVAIL. DIRECT. 5.3 6.3 6.3 7.5 6.8 6.1 7.5 5.4 4.6 5.0 10.4 4.4 5.6 PREVAIL. SPEED 13.5 11.0 9.0 23.3 25.8 21.3 22.6 21.9 19.3 18.1 20.0 11.4 15.3 PREVAIL. PERCENT 66.5 56.6 61.3 24.0 29.7 20.7 21.9 34.8 38.0 36.8 34.7 58.6 40.2 CALMS PERCENT 155 145 155 150 155 150 155 155 150 155 150 140 1815 WIND OBSER. NO. 1993 45 45 45 45 360 45 45 45 45 45 45 45 45 PREVAIL. DIRECT. 4.7 5.8 5.5 5.2 4.9 5.8 8.6 7.3 5.8 5.9 5.4 3.7 5.9 PREVAIL. SPEED 17.4 12.9 16.1 14.7 20.6 21.3 22.6 23.2 17.3 18.7 12.7 11.6 17.2 PREVAIL. PERCENT 46.5 47.9 34.2 43.3 36.8 40.7 29.0 40.6 44.0 47.7 54.7 74.2 44.9 CALMS PERCENT 155 140 155 150 155 150 155 155 150 155 150 155 1825 WIND OBSER. NO. 1994 45 45 45 225 360 45 45 45 45 45 225 225 45 PREVAIL. DIRECT. 5.2 5.5 5.0 12.3 5.9 6.2 7.4 6.6 6.6 5.8 12.1 17.3 5.9 PREVAIL. SPEED 10.3 15.0 11.6 11.3 11.6 16.7 16.1 16.8 12.7 7.1 12.0 6.5 11.5 PREVAIL. PERCENT 70.3 55.0 54.2 46.7 45.8 46.0 40.6 50.3 53.3 74.2 62.7 78.1 56.5 CALMS PERCENT 155 140 155 150 155 150 155 155 150 155 150 155 1825 WIND OBSER. NO. 1995 45 45 45 225 45 360 45 45 45 45 225 45 45 PREVAIL. DIRECT. 4.6 5.2 6.3 9.8 5.5 6.8 6.3 8.0 6.0 5.4 11.6 4.8 6.2 PREVAIL. SPEED 6.5 9.3 14.2 6.0 11.0 14.7 14.8 16.8 7.3 9.0 10.0 5.2 9.4 PREVAIL. PERCENT 79.4 62.1 53.5 63.3 58.7 59.3 62.6 52.3 70.7 67.7 70.7 87.1 65.6 CALMS PERCENT 155 140 155 150 155 150 155 155 150 155 150 155 1825 WIND OBSER. NO. 1996 45 225 225 225 45 135 90 90 45 270 90 90 90 PREVAIL. DIRECT. 5.2 9.6 11.3 13.6 5.2 8.0 7.0 6.7 5.4 8.8 4.8 3.9 6.0 PREVAIL. SPEED 6.5 6.9 7.7 10.7 9.7 10.7 20.6 19.4 16.7 8.4 5.3 14.2 8.2 PREVAIL. PERCENT 82.6 70.3 68.4 55.3 72.3 57.3 45.2 36.1 60.0 59.4 78.7 71.6 63.1 CALMS PERCENT 155 145 155 150 155 150 155 155 150 155 150 155 1830 WIND OBSER. NO. 1997 90 90 225 45 90 45 135 135 45 45 90 225 90 PREVAIL. DIRECT. 5.0 5.1 11.4 6.9 6.2 6.8 6.5 6.5 5.2 6.0 4.8 9.4 5.8 PREVAIL. SPEED 13.5 20.0 12.3 13.3 8.4 14.0 13.5 14.8 10.0 7.1 3.3 4.5 9.4 PREVAIL. PERCENT 61.3 45.0 51.0 48.0 61.9 56.7 58.7 53.5 66.0 72.9 85.3 89.7 62.6 CALMS PERCENT 155 140 155 150 155 150 155 155 150 155 150 155 1825 WIND OBSER. NO. 1998 90 315 45 45 45 90 90 45 45 90 90 90 45 PREVAIL. DIRECT. 5.0 12.4 5.1 6.2 5.9 5.6 5.5 5.6 5.9 4.7 4.8 4.5 5.4 PREVAIL. SPEED 5.2 5.7 11.6 11.3 16.1 22.7 17.4 19.4 20.0 16.8 10.0 7.7 11.8 PREVAIL. PERCENT 84.5 73.6 59.4 50.7 50.3 36.7 40.0 41.3 52.0 65.2 69.3 76.1 58.2 CALMS PERCENT 155 140 155 150 155 150 155 155 150 155 150 155 1825 WIND OBSER. NO. 1999 90 45 90 45 90 90 90 90 45 45 90 90 90 PREVAIL. DIRECT. 4.1 4.7 5.5 6.2 6.3 6.1 6.1 5.7 6.5 5.8 4.9 4.3 5.5 PREVAIL. SPEED 9.7 12.1 14.2 14.0 19.4 16.0 20.0 23.2 20.0 14.2 13.3 9.7 14.5 PREVAIL. PERCENT 74.8 57.1 55.5 49.3 41.9 43.3 33.5 38.1 47.3 54.8 66.0 77.4 53.3 CALMS PERCENT 155 140 155 150 155 150 155 155 150 155 150 155 1825 WIND OBSER. NO. 2000 90 90 90 90 90 90 90 90 90 90 90 90 90 PREVAIL. DIRECT. 4.9 4.9 5.6 6.3 5.7 5.5 6.1 5.6 5.2 5.0 5.0 4.0 5.5 PREVAIL. SPEED 12.3 10.3 16.1 27.3 18.7 22.7 28.4 24.5 22.0 13.5 16.7 15.5 19.0 PREVAIL. PERCENT 56.8 60.0 40.0 37.3 37.4 38.7 35.5 40.0 44.0 54.2 62.7 56.1 46.8 CALMS PERCENT 155 145 155 150 155 150 155 155 150 155 150 155 1830 WIND OBSER. NO. 2001 90 90 90 90 90 90 90 90 90 90 90 225 90 PREVAIL. DIRECT. 4.9 6.4 6.2 6.7 6.1 6.2 5.8 6.1 5.6 6.3 5.6 11.6 6.0 PREVAIL. SPEED 14.8 17.9 24.5 23.3 18.7 21.3 25.8 18.1 14.7 14.8 9.3 4.5 17.2 PREVAIL. PERCENT 51.0 43.6 36.8 26.7 29.7 32.0 30.3 41.9 55.3 56.8 63.3 83.9 46.0 CALMS PERCENT 155 140 155 150 155 150 155 155 150 155 150 155 1825 WIND OBSER. NO. 2002 90 45 90 90 90 135 135 135 90 90 90 135 90 PREVAIL. DIRECT. 5.2 6.6 6.4 5.8 5.5 5.7 6.8 6.2 4.9 6.0 5.1 4.4 5.8 PREVAIL. SPEED 8.4 10.0 16.1 12.0 18.1 13.3 14.8 16.1 14.7 18.7 11.3 9.0 12.8 PREVAIL. PERCENT 71.6 55.7 44.5 46.7 34.2 49.3 49.0 40.0 50.0 55.5 65.3 63.9 52.1 CALMS PERCENT 155 140 155 150 155 150 155 155 150 155 150 155 1825 WIND OBSER. NO. 2003 135 90 90 270 90 45 45 90 315 315 90 135 90 PREVAIL. DIRECT. 4.6 6.3 5.8 12.7 7.3 7.5 7.5 6.7 5.5 7.2 5.0 5.3 6.3 PREVAIL. SPEED 6.5 14.3 14.2 12.7 16.1 16.5 14.9 12.1 12.5 13.7 13.1 7.7 11.0 PREVAIL. PERCENT 67.7 46.4 49.7 48.0 51.6 48.3 44.8 50.0 51.3 48.4 63.4 66.5 52.4 CALMS PERCENT 155 140 155 150 155 176 248 248 240 248 175 155 2245 WIND OBSER. NO. 2004 135 135 90 90 90 45 180 135 135 135 90 225 135 PREVAIL. DIRECT. 6.0 5.7 6.6 6.4 7.5 6.9 5.9 7.2 5.7 5.6 5.8 10.4 6.2 PREVAIL. SPEED 7.7 13.8 12.3 11.4 18.1 14.7 14.2 18.7 14.0 19.4 7.3 4.5 10.2 PREVAIL. PERCENT 66.5 48.3 52.3 43.8 40.6 47.3 52.9 47.7 44.7 54.8 70.7 76.1 53.5 CALMS PERCENT 155 145 155 210 155 150 155 155 150 155 150 155 1890 WIND OBSER. NO. 2005 45 360 45 360 315 360 45 360 360 315 45 45 45 PREVAIL. DIRECT. 5.8 6.2 6.1 7.3 7.6 7.4 8.0 7.0 7.3 7.4 5.6 6.3 6.6 PREVAIL. SPEED 6.5 9.3 11.6 14.0 16.1 14.7 18.7 13.5 9.3 12.9 16.0 20.6 11.2 PREVAIL. PERCENT 73.5 63.6 47.7 45.3 39.4 48.7 40.6 58.1 61.3 58.7 40.0 44.5 51.7 CALMS PERCENT 155 140 155 150 155 150 155 155 150 155 150 155 1825 WIND OBSER. NO. 1992-2005 90 45 90 45 45 45 90 90 45 90 90 90 90 PREVAIL. DIRECT. 4.8 5.8 5.8 6.9 6.2 6.4 6.5 6.6 6.1 5.6 5.1 4.7 5.9 PREVAIL. SPEED 7.4 8.7 10.8 11.3 13.0 14.8 15.2 15.1 12.0 9.5 8.2 6.6 10.6 PREVAIL. PERCENT MEAN 68.1 56.1 50.6 44.9 45.0 44.7 41.9 44.9 52.6 57.3 63.4 71.8 53.4 CALMS PERCENT MEAN 155.0 141.4 155.0 154.3 155.0 151.9 161.6 161.6 156.4 161.6 151.8 153.9 1859.5 WIND OBSER. NO. =============================================================================================== TEHRAN 2006,MAY M.(S & A) STATION NATANZ (99421) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) FORM 35 LATITUDE 33 32 N LONGITUDE 51 54 E DATA PROCESSING CENTER ELEVATION 1684.9 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 70 161 343 348 13 10 43 77 52 39 208 78 34 VECTOR DIRECT. 0.5 0.6 0.8 1.8 1.8 2.1 2.5 2.1 1.2 1.4 1.5 0.3 0.9 WIND MAGNITUDE 27.8 18.8 28.6 29.5 35.3 36.8 47.2 60.0 38.7 46.7 31.9 15.0 23.1 STEADINESES(%) 1993 59 33 259 349 10 40 52 67 79 59 244 46 51 VECTOR DIRECT. 0.8 0.5 0.2 0.6 1.1 2.5 3.5 3.0 1.7 1.5 0.5 0.6 1.2 WIND MAGNITUDE 32.0 14.3 4.0 16.2 27.5 62.5 64.8 69.8 40.5 48.4 13.2 50.0 32.4 STEADINESES(%) 1994 22 360 271 298 274 49 81 88 70 350 210 216 67 VECTOR DIRECT. 0.5 0.6 0.3 1.3 0.7 1.9 2.6 2.4 1.9 0.3 2.1 0.8 0.4 WIND MAGNITUDE 27.8 17.6 8.8 27.7 15.9 45.2 57.8 66.7 59.4 18.8 56.8 42.1 11.8 STEADINESES(%) 1995 39 230 334 255 340 359 44 84 78 150 231 8 48 VECTOR DIRECT. 0.6 0.4 0.3 0.3 0.1 1.2 1.5 2.3 0.2 0.4 1.2 0.3 0.3 WIND MAGNITUDE 60.0 14.8 8.1 10.3 3.2 38.7 60.0 60.5 8.7 16.7 44.4 42.9 11.5 STEADINESES(%) 1996 148 224 253 246 24 112 109 98 66 246 44 131 112 VECTOR DIRECT. 0.5 0.7 0.8 0.9 0.7 1.0 2.2 2.1 1.3 0.7 0.5 0.4 0.4 WIND MAGNITUDE 33.3 29.2 30.8 23.1 38.9 31.3 56.4 53.8 56.5 25.9 50.0 26.7 15.4 STEADINESES(%) 1997 218 250 255 18 14 74 106 119 77 276 217 221 114 VECTOR DIRECT. 0.4 0.3 1.2 0.8 0.2 1.0 1.6 2.1 1.0 0.3 0.4 0.3 0.3 WIND MAGNITUDE 14.8 7.7 27.3 19.0 6.5 31.3 61.5 63.6 50.0 14.3 36.4 42.9 10.7 STEADINESES(%) 1998 15 275 240 215 37 93 80 74 54 63 80 93 75 VECTOR DIRECT. 0.1 0.7 1.4 0.5 0.9 2.6 1.9 2.4 1.9 1.2 0.4 0.4 0.7 WIND MAGNITUDE 11.1 24.1 29.8 10.2 28.1 70.3 54.3 68.6 65.5 70.6 23.5 33.3 24.1 STEADINESES(%) 1999 70 301 193 56 65 75 89 101 58 49 78 90 77 VECTOR DIRECT. 0.5 0.2 0.5 0.7 1.7 1.4 2.6 2.7 2.3 1.2 0.7 0.6 1.1 WIND MAGNITUDE 35.7 6.3 12.8 17.9 37.0 37.8 59.1 73.0 71.9 46.2 35.0 60.0 35.5 STEADINESES(%) 2000 258 49 301 52 47 93 119 117 97 64 94 165 89 VECTOR DIRECT. 0.8 0.9 1.1 2.2 1.5 2.6 3.1 2.4 1.8 0.5 1.1 0.3 1.1 WIND MAGNITUDE 22.9 36.0 17.5 44.9 33.3 65.0 77.5 68.6 52.9 16.7 55.0 11.1 29.7 STEADINESES(%) 2001 106 70 82 29 298 88 114 103 96 89 273 270 90 VECTOR DIRECT. 0.7 0.5 1.7 1.0 1.3 2.9 2.9 1.7 1.7 1.2 0.3 0.9 0.9 WIND MAGNITUDE 30.4 12.5 37.0 14.9 18.3 61.7 65.9 47.2 65.4 42.9 8.8 52.9 22.5 STEADINESES(%) 2002 97 318 258 304 44 91 138 121 93 84 72 260 102 VECTOR DIRECT. 0.2 0.3 0.9 1.0 1.2 0.8 2.5 1.9 1.1 0.9 0.9 0.6 0.5 WIND MAGNITUDE 10.5 8.6 18.4 22.2 25.0 22.2 65.8 48.7 39.3 33.3 47.4 21.4 14.7 STEADINESES(%) 2003 256 310 250 313 89 78 91 135 136 291 57 105 63 VECTOR DIRECT. 0.7 1.0 1.3 1.0 1.8 2.0 1.2 1.0 0.3 1.4 0.3 0.2 0.2 WIND MAGNITUDE 29.2 19.6 27.1 21.7 48.6 50.0 30.0 32.3 11.1 35.9 14.3 7.7 5.6 STEADINESES(%) 2004 179 260 18 275 61 102 150 155 133 88 285 186 140 VECTOR DIRECT. 0.1 1.7 0.5 0.8 0.6 2.2 1.5 2.4 1.5 1.1 0.7 0.1 0.5 WIND MAGNITUDE 4.3 32.1 13.5 17.0 11.8 55.0 46.9 63.2 40.5 35.5 25.9 6.3 13.9 STEADINESES(%) 2005 286 276 263 291 341 24 30 39 18 314 60 72 16 VECTOR DIRECT. 0.4 0.4 0.7 0.8 0.8 1.9 2.8 1.6 1.2 0.1 1.0 0.6 0.7 WIND MAGNITUDE 18.2 14.3 15.9 15.7 16.7 50.0 59.6 50.0 40.0 2.8 26.3 14.6 18.4 STEADINESES(%) 1992-2005 69 288 269 336 30 68 87 97 75 56 180 134 73 VECTOR DIRECT. 0.1 0.3 0.4 0.5 0.7 1.6 1.9 1.9 1.2 0.5 0.2 0.1 0.6 WIND MAGNITUDE 5.0 8.8 9.5 10.9 16.7 41.0 47.5 52.8 41.4 18.5 7.7 5.6 17.6 STEADINESES(%) =============================================================================================== TEHRAN 2006,MAY M.(S & A) STATION NATANZ (99421) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) FORM 36 LATITUDE 33 32 N LONGITUDE 51 54 E DATA PROCESSING CENTER ELEVATION 1684.9 M AVERAGE OF WIND SPEED IN KNOTS YEAR JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL 1992 1.8 3.2 2.8 6.1 5.1 5.7 5.3 3.5 3.1 3.0 4.7 2.0 3.9 1993 2.5 3.5 5.0 3.7 4.0 4.0 5.4 4.3 4.2 3.1 3.8 1.2 3.7 1994 1.8 3.4 3.4 4.7 4.4 4.2 4.5 3.6 3.2 1.6 3.7 1.9 3.4 1995 1.0 2.7 3.7 2.9 3.1 3.1 2.5 3.8 2.3 2.4 2.7 0.7 2.6 1996 1.5 2.4 2.6 3.9 1.8 3.2 3.9 3.9 2.3 2.7 1.0 1.5 2.6 1997 2.7 3.9 4.4 4.2 3.1 3.2 2.6 3.3 2.0 2.1 1.1 0.7 2.8 1998 0.9 2.9 4.7 4.9 3.2 3.7 3.5 3.5 2.9 1.7 1.7 1.2 2.9 1999 1.4 3.2 3.9 3.9 4.6 3.7 4.4 3.7 3.2 2.6 2.0 1.0 3.1 2000 3.5 2.5 6.3 4.9 4.5 4.0 4.0 3.5 3.4 3.0 2.0 2.7 3.7 2001 2.3 4.0 4.6 6.7 7.1 4.7 4.4 3.6 2.6 2.8 3.4 1.7 4.0 2002 1.9 3.5 4.9 4.5 4.8 3.6 3.8 3.9 2.8 2.7 1.9 2.8 3.4 2003 2.4 5.1 4.8 4.6 3.7 4.0 4.0 3.1 2.7 3.9 2.1 2.6 3.6 2004 2.3 5.3 3.7 4.7 5.1 4.0 3.2 3.8 3.7 3.1 2.7 1.6 3.6 2005 2.2 2.8 4.4 5.1 4.8 3.8 4.7 3.2 3.0 3.6 3.8 4.1 3.8 MEAN 2.0 3.4 4.2 4.6 4.2 3.9 4.0 3.6 2.9 2.7 2.6 1.8 3.4 =============================================================================================== TEHRAN 2006,MAY M.(S & A) STATION NATANZ (99421) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) FORM 37 LATITUDE 33 32 N LONGITUDE 51 54 E DATA PROCESSING CENTER ELEVATION 1684.9 M FASTEST WIND DIRECTION AND SPEED IN KNOTS YEAR JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL 1992 180 180 270 260 220 320 220 270 180 90 220 200 220 DIRECTION 16 27 19 29 23 17 16 16 16 14 33 16 33 SPEED 2 24 30 14 23 14 2 12 25 27 25 13 DAY 1993 360 240 260 260 260 330 30 90 240 100 220 330 260 DIRECTION 12 31 39 19 23 16 23 19 27 19 33 16 39 SPEED 8 12 8 7 3 1 7 5 24 31 12 1 DAY 1994 30 210 240 240 280 190 160 100 330 210 270 210 240 DIRECTION 19 31 39 27 27 23 16 16 19 19 29 31 39 SPEED 1 1 7 2 4 4 20 19 28 19 23 20 DAY 1995 30 210 220 270 210 270 40 110 240 200 240 320 220 DIRECTION 14 29 33 19 27 19 14 16 31 23 23 14 33 SPEED 3 5 17 3 2 4 14 4 20 12 11 4 DAY 1996 210 180 240 240 300 240 160 240 160 270 10 240 210 DIRECTION 31 23 23 29 16 16 19 14 14 19 12 16 31 SPEED 6 10 2 13 4 5 10 7 1 13 3 14 DAY 1997 240 260 240 250 300 60 160 110 120 270 190 220 300 DIRECTION 23 25 29 29 35 25 14 16 12 33 19 19 35 SPEED 16 22 28 10 19 14 19 17 7 7 5 9 DAY 1998 230 240 270 300 220 120 270 70 360 180 180 220 270 DIRECTION 14 39 58 35 27 12 17 14 12 10 12 16 58 SPEED 30 8 30 6 29 12 17 2 4 11 10 1 DAY 1999 220 260 250 250 260 270 150 130 360 240 270 170 250 DIRECTION 19 49 58 29 58 19 16 12 16 16 23 10 58 SPEED 9 20 26 2 14 12 22 1 27 6 26 2 DAY 2000 280 250 240 270 270 180 180 220 270 250 10 240 240 DIRECTION 27 16 43 31 29 12 14 16 31 19 12 19 43 SPEED 27 25 24 10 1 3 1 7 30 17 6 11 DAY 2001 230 290 260 30 270 90 120 250 240 260 270 300 270 DIRECTION 10 29 27 37 29 16 16 17 23 17 45 29 45 SPEED 4 21 25 9 3 30 9 24 26 26 18 20 DAY 2002 250 270 250 250 300 250 180 180 260 270 270 250 250 DIRECTION 23 25 25 27 29 23 17 17 16 16 12 35 35 SPEED 7 27 20 20 24 5 12 1 11 21 1 21 DAY 2003 260 270 270 270 270 30 270 240 320 270 290 260 270 DIRECTION 29 39 35 29 23 19 19 16 12 27 23 19 39 SPEED 28 4 19 27 8 4 17 27 7 29 11 6 DAY 2004 260 240 300 250 220 130 270 270 250 340 280 240 240 DIRECTION 39 45 27 29 29 29 16 16 16 29 35 19 45 SPEED 13 23 13 4 13 30 12 26 3 22 23 12 DAY 2005 240 220 210 270 210 310 330 180 240 90 90 220 210 DIRECTION 33 27 31 35 39 14 14 14 17 19 27 25 39 SPEED 3 1 24 2 5 8 7 6 18 28 5 24 DAY 1992-2005 260 260 270 30 260 130 30 90 240 270 270 250 270 DIRECTION 39 49 58 37 58 29 23 19 31 33 45 35 58 SPEED 4-13 99-20 98-30 1- 9 99-14 4-30 93- 7 93- 5 95-20 97- 7 1-18 2-21 98 YEAR-DAY =============================================================================================== TEHRAN 2006,MAY M.(S & A) STATION NATANZ (99421) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) FORM 38 LATITUDE 33 32 N LONGITUDE 51 54 E DATA PROCESSING CENTER ELEVATION 1684.9 M NO. OF CLEAR DAYS (0-2)/8 YEAR JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL 1992 14 22 15 12 11 26 26 29 30 30 15 11 241 1993 16 9 12 9 8 29 28 27 28 18 14 17 215 1994 14 18 13 13 14 28 29 31 26 10 14 20 230 1995 21 13 18 5 14 23 30 31 25 27 22 12 241 1996 9 8 8 12 10 25 25 25 29 27 19 13 210 1997 19 25 10 16 8 17 23 31 30 19 9 14 221 1998 15 10 13 12 16 23 16 19 24 28 15 10 201 1999 8 17 12 11 25 26 27 25 29 26 13 15 234 2000 18 19 20 18 25 28 28 26 21 21 11 11 246 2001 14 19 17 16 18 26 29 25 27 22 16 13 242 2002 13 18 16 7 19 26 27 28 25 22 10 12 223 2003 15 12 13 9 16 26 26 31 30 22 19 13 232 2004 15 19 7 6 18 21 19 23 28 25 14 14 209 2005 18 5 13 14 18 29 22 29 30 26 15 14 233 MEAN 14.9 15.3 13.4 11.4 15.7 25.2 25.4 27.1 27.3 23.1 14.7 13.5 227.0 =============================================================================================== TEHRAN 2006,MAY M.(S & A) STATION NATANZ (99421) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) FORM 39 LATITUDE 33 32 N LONGITUDE 51 54 E DATA PROCESSING CENTER ELEVATION 1684.9 M NO. OF PARTLY CLOUDY DAYS (3-6)/8 YEAR JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL 1992 11 5 14 14 16 3 5 2 0 1 13 11 95 1993 6 10 11 10 15 1 3 4 2 12 12 11 97 1994 11 8 11 10 12 2 2 0 4 17 9 6 92 1995 8 11 7 13 10 7 1 0 5 4 7 7 80 1996 13 11 10 9 15 5 6 6 1 4 5 14 99 1997 9 2 15 10 19 9 8 0 0 9 13 10 104 1998 10 10 10 13 11 7 15 12 6 1 12 14 121 1999 10 8 7 14 6 4 4 6 1 4 10 9 83 2000 6 6 8 9 4 2 3 5 8 6 9 10 76 2001 11 5 7 9 11 4 2 6 3 9 12 10 89 2002 13 7 12 13 11 4 4 3 5 8 13 14 107 2003 5 13 13 6 12 2 5 0 0 9 7 7 79 2004 10 7 16 15 13 8 12 8 2 6 11 12 120 2005 11 15 12 8 13 1 9 2 0 5 11 12 99 MEAN 9.6 8.4 10.9 10.9 12.0 4.2 5.6 3.9 2.6 6.8 10.3 10.5 95.7 =============================================================================================== TEHRAN 2006,MAY M.(S & A) STATION NATANZ (99421) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) FORM 40 LATITUDE 33 32 N LONGITUDE 51 54 E DATA PROCESSING CENTER ELEVATION 1684.9 M NO. OF CLOUDY DAYS (7-8)/8 YEAR JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL 1992 6 2 2 4 4 1 0 0 0 0 2 5 26 1993 9 9 8 11 8 0 0 0 0 1 3 3 52 1994 6 2 7 7 5 0 0 0 0 4 7 5 43 1995 2 4 6 12 7 0 0 0 0 0 1 12 44 1996 8 10 13 9 6 0 0 0 0 0 6 4 56 1997 3 1 6 4 4 4 0 0 0 3 8 7 40 1998 6 8 8 5 4 0 0 0 0 2 3 7 43 1999 13 3 12 5 0 0 0 0 0 1 7 7 48 2000 7 4 3 3 2 0 0 0 1 4 10 10 44 2001 6 4 7 5 2 0 0 0 0 0 2 8 34 2002 5 3 3 10 1 0 0 0 0 1 7 5 35 2003 11 3 5 15 3 2 0 0 0 0 4 11 54 2004 6 3 8 9 0 1 0 0 0 0 5 5 37 2005 2 8 6 8 0 0 0 0 0 0 4 5 33 MEAN 6.4 4.6 6.7 7.6 3.3 0.6 0.0 0.0 0.1 1.1 4.9 6.7 42.0 =============================================================================================== TEHRAN 2006,MAY M.(S & A) STATION NATANZ (99421) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) FORM 41 LATITUDE 33 32 N LONGITUDE 51 54 E DATA PROCESSING CENTER ELEVATION 1684.9 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 3 2 2 1 4 0 0 0 0 0 1 5 18 1993 6 7 0 0 0 0 0 0 0 0 4 1 18 1994 1 2 0 0 0 0 0 0 0 0 0 0 3 1995 0 1 0 0 1 0 0 0 0 0 0 4 6 1996 5 7 8 0 0 0 0 0 1 0 0 0 21 1997 0 0 1 0 1 0 0 0 0 0 0 2 4 1998 4 3 2 0 0 0 0 0 0 0 0 1 10 1999 7 2 0 0 0 0 0 0 0 0 2 1 12 2000 2 1 3 0 0 0 0 0 0 2 5 4 17 2001 5 0 0 1 1 0 0 0 0 0 0 5 12 2002 1 1 0 4 0 0 0 0 0 0 2 3 11 2003 4 3 0 2 0 0 0 0 0 0 2 9 20 2004 6 0 2 1 1 0 0 0 0 0 0 5 15 2005 6 3 0 0 1 0 0 0 0 0 0 0 10 MEAN 3.6 2.3 1.3 0.6 0.6 0.0 0.0 0.0 0.1 0.1 1.1 2.9 12.6 =============================================================================================== TEHRAN 2006,MAY M.(S & A) STATION NATANZ (99421) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) FORM 42 LATITUDE 33 32 N LONGITUDE 51 54 E DATA PROCESSING CENTER ELEVATION 1684.9 M MONTHLY TOTAL OF SUNSHINE HOURS YEAR JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL 1992 ***** ***** ***** ***** ***** ***** ***** ***** 314.0 296.1 196.4 143.3 ****** 1993 159.4 167.6 202.6 208.4 239.0 367.9 374.6 303.9 ***** ***** ***** ***** ****** 1994 99.2 212.2 227.5 226.0 274.7 353.5 362.1 355.3 303.4 195.6 186.0 214.1 3009.6 1995 235.2 ***** 158.7 ***** ***** 192.8 376.8 357.9 305.0 296.4 250.2 146.5 ****** 1996 178.1 148.4 154.9 247.7 262.4 360.0 360.2 346.8 304.5 286.4 196.5 222.8 3068.7 1997 215.3 264.7 211.8 281.1 280.9 287.1 330.3 369.9 320.4 255.2 161.8 184.7 3163.2 1998 208.3 176.2 219.4 264.6 296.4 357.0 329.8 340.6 285.4 287.0 235.8 200.5 3201.0 1999 147.2 219.7 202.1 256.3 349.6 364.1 361.2 355.6 321.4 270.3 223.6 206.8 3277.9 2000 203.8 231.4 250.3 259.5 346.3 364.4 364.7 348.0 283.1 248.6 160.9 155.7 3216.7 2001 192.8 209.7 250.6 275.6 311.5 354.0 358.3 337.0 293.6 277.5 215.9 154.8 3231.3 2002 188.7 233.0 254.5 194.0 334.2 358.2 359.1 356.7 321.3 282.6 179.8 178.1 3240.2 2003 175.6 201.9 227.7 189.6 294.5 339.3 341.5 366.0 322.3 261.6 221.8 153.0 3094.8 2004 179.4 241.1 176.0 215.4 297.9 291.4 265.6 339.0 311.8 281.3 192.8 180.6 2972.3 2005 211.1 157.4 233.2 254.4 280.0 355.7 338.5 348.7 314.2 281.4 205.6 207.1 3187.3 MEAN 184.2 205.3 213.0 239.4 297.3 334.3 347.9 348.1 307.7 270.8 202.1 180.6 3130.7 =============================================================================================== TEHRAN 2006,MAY M.(S & A) STATION NATANZ (99421) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) FORM 43 LATITUDE 33 32 N LONGITUDE 51 54 E DATA PROCESSING CENTER ELEVATION 1684.9 M AVERAGE OF QFE PRESSURE IN HPA YEAR JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL 1992 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1993 ****** ****** 830.5 830.4 831.3 829.2 829.0 830.7 831.9 837.0 833.5 834.9 ****** 1994 832.6 829.3 830.4 832.1 831.2 827.0 825.9 827.7 834.7 836.3 832.9 833.0 831.1 1995 833.5 830.9 830.7 830.3 832.5 828.7 825.7 829.0 831.4 834.6 833.7 833.9 831.2 1996 832.7 829.9 828.4 831.0 831.9 829.1 830.3 830.2 830.5 834.3 836.5 834.8 831.6 1997 830.7 830.6 827.3 829.4 832.1 829.1 826.0 829.3 832.8 834.8 834.7 832.3 830.8 1998 829.8 830.5 829.8 831.1 831.8 831.2 828.0 831.0 831.7 835.1 835.6 835.9 831.8 1999 832.3 830.6 829.5 831.1 830.8 828.5 827.4 830.3 830.8 834.2 833.6 836.3 831.3 2000 830.3 830.9 829.9 831.4 829.5 828.1 829.3 830.1 830.8 834.6 835.4 833.0 831.1 2001 833.2 831.1 830.9 831.0 829.4 827.7 827.8 830.7 832.4 834.3 833.7 834.3 831.4 2002 832.2 832.1 831.0 829.0 829.9 828.8 829.1 828.3 833.0 835.0 835.3 831.7 831.3 2003 832.1 828.5 829.6 831.4 832.3 827.8 825.9 830.5 832.0 834.5 834.9 834.7 831.2 2004 829.9 831.4 833.0 830.3 829.6 829.2 829.3 829.0 833.8 836.6 833.7 832.6 831.5 2005 831.1 829.9 829.6 833.0 831.1 828.9 828.5 829.5 831.4 835.7 835.0 834.8 831.5 MEAN 831.7 830.5 830.0 830.9 831.0 828.7 827.8 829.7 832.1 835.2 834.5 834.0 831.3 =============================================================================================== TEHRAN 2006,MAY M.(S & A) STATION NATANZ (99421) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) FORM 44 LATITUDE 33 32 N LONGITUDE 51 54 E DATA PROCESSING CENTER ELEVATION 1684.9 M MAX. OF QFE PRESSURE IN HPA YEAR JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL 1992 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY-HOUR **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** 1993 ****** ****** 838.3 836.7 836.0 836.8 834.7 835.1 837.9 842.3 839.8 841.2 ****** DAY-HOUR **-** **-** 31- 6 1- 6 9- 6 23- 6 27- 6 31- 6 23- 6 17- 6 21- 6 26- 6 1994 840.7 836.0 836.2 840.6 836.1 832.5 830.1 832.9 842.1 841.7 840.5 838.4 842.1 DAY-HOUR 10- 6 20- 6 18- 6 5- 6 18- 6 9- 6 2- 6 15- 6 23- 6 9- 6 2- 6 22- 6 1995 841.2 836.1 838.8 834.8 837.2 834.3 830.2 833.7 837.6 842.2 840.0 838.2 842.2 DAY-HOUR 7- 6 1- 6 3- 6 13- 6 26- 6 1- 6 4- 6 25- 6 13- 6 25- 6 16- 3 10- 6 1996 839.2 835.7 833.5 835.5 836.2 833.3 835.8 837.5 838.2 842.5 845.4 840.2 845.4 DAY-HOUR 26- 6 13- 6 29- 6 4- 6 17- 6 27- 6 4- 6 29- 6 25- 6 2- 6 18- 6 2- 6 1997 837.1 837.5 839.7 835.7 837.9 833.6 830.3 833.5 838.6 839.8 843.8 839.5 843.8 DAY-HOUR 19- 6 17- 6 11- 6 23- 6 12- 6 11- 6 19- 6 28- 6 19- 6 9- 6 8- 6 28- 6 1998 837.8 842.2 837.3 841.0 839.3 837.0 836.4 836.0 835.9 841.0 841.7 842.6 842.6 DAY-HOUR 4- 6 23- 6 28- 6 12- 6 8- 6 17- 3 20- 6 25- 6 29- 6 10- 6 21- 6 9- 6 1999 842.4 837.5 836.8 835.4 838.7 834.4 832.7 836.9 836.9 837.7 839.1 842.2 842.4 DAY-HOUR 2- 6 12- 6 31- 6 30- 9 28- 6 1- 6 19- 6 20- 6 30- 6 1- 6 14- 6 6- 6 2000 837.8 837.6 836.0 836.7 834.3 834.1 836.3 834.8 837.1 839.1 843.6 840.0 843.6 DAY-HOUR 31- 6 11- 6 27- 6 2- 6 4- 6 17- 6 30- 6 23- 6 29- 6 16- 6 17- 6 4- 6 2001 836.8 839.6 839.2 838.6 833.8 835.0 834.5 835.1 838.5 841.8 840.9 839.6 841.8 DAY-HOUR 10- 6 10- 6 1- 6 2- 6 13- 6 2- 6 29- 6 5- 6 22- 6 10- 6 2- 6 28- 6 2002 839.0 841.4 841.6 837.1 834.9 835.7 834.4 834.0 838.3 840.9 843.0 841.2 843.0 DAY-HOUR 26- 6 6- 6 11- 6 1- 6 17- 6 25- 6 29- 6 31- 6 21- 6 10- 6 18- 6 3- 6 2003 838.9 835.1 838.6 838.0 838.3 833.3 832.8 834.4 838.6 840.1 843.9 842.5 843.9 DAY-HOUR 8- 6 6- 6 2- 6 8- 3 2- 6 3- 6 3- 6 30- 6 27- 6 15- 6 25- 6 12- 6 2004 835.9 837.8 840.1 836.3 834.5 836.2 834.8 833.8 838.9 841.5 838.7 842.1 842.1 DAY-HOUR 12- 6 10- 6 9- 6 11- 6 22-12 6- 6 18- 6 18- 6 25- 6 27- 6 1- 6 3- 6 2005 838.4 837.3 834.7 839.8 835.8 834.3 833.5 833.9 834.9 842.0 839.3 840.8 842.0 DAY-HOUR 9- 6 17- 9 30- 6 6- 6 18- 9 16- 6 28- 6 27- 6 10- 6 12- 6 23-15 29- 6 1992-2005 842.4 842.2 841.6 841.0 839.3 837.0 836.4 837.5 842.1 842.5 845.4 842.6 845.4 YEAR-DAY 99- 2 98-23 2-11 98-12 98- 8 98-17 98-20 96-29 94-23 96- 2 96-18 98- 9 96-18 =============================================================================================== TEHRAN 2006,MAY M.(S & A) STATION NATANZ (99421) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) FORM 45 LATITUDE 33 32 N LONGITUDE 51 54 E DATA PROCESSING CENTER ELEVATION 1684.9 M MIN. OF QFE PRESSURE IN HPA YEAR JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL 1992 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY-HOUR **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** 1993 ****** ****** 822.3 824.2 826.8 823.7 823.8 824.3 827.1 830.1 823.7 827.1 ****** DAY-HOUR **-** **-** 5-15 13-12 7-12 3-15 12-12 12-15 3-12 28-12 14- 3 4-12 1994 824.7 821.0 820.7 823.8 824.4 821.9 822.1 823.1 828.2 831.0 824.2 819.8 819.8 DAY-HOUR 25-12 1- 6 12-12 2-12 1-12 4-15 7-15 2-12 1-15 2-12 26- 3 4-12 1995 827.5 821.4 821.3 825.4 827.8 821.6 820.9 824.2 824.6 827.4 824.7 829.3 820.9 DAY-HOUR 11-12 5- 3 17-12 24-15 10-12 22-12 16-15 22-15 20-12 12-12 25-12 4- 3 1996 824.4 819.4 822.8 823.5 826.1 823.4 823.3 824.3 824.5 826.4 830.8 829.4 819.4 DAY-HOUR 6-12 5- 3 13-12 10-12 29-12 19-12 7-15 8-15 20-12 27-12 29-12 25- 3 1997 819.4 824.7 816.4 821.0 824.0 823.8 821.1 823.4 827.2 830.7 830.4 824.2 816.4 DAY-HOUR 16- 3 5-15 29-12 9-15 4-15 24-15 16-15 5-15 3-12 23-12 19-12 10- 3 1998 816.6 820.4 819.8 823.3 823.5 826.1 819.9 826.5 826.7 828.6 830.5 828.5 816.6 DAY-HOUR 13- 3 15- 9 18-15 23-15 29-12 29-15 8-15 22-15 3-15 1-12 1-12 24- 3 1999 823.9 820.6 823.3 822.6 821.3 820.7 823.3 825.5 825.8 829.1 826.2 828.9 820.6 DAY-HOUR 9- 9 20-15 21-12 8-12 20-15 24-15 22-15 14-15 11-15 31-12 26- 9 15-15 2000 822.0 819.7 821.2 827.4 824.2 821.4 821.9 822.7 822.9 829.5 830.1 824.3 819.7 DAY-HOUR 21-12 7- 3 24-12 10-12 26-15 24-12 11-15 30-15 1-12 1-12 21-12 15- 9 2001 828.0 818.0 819.6 824.4 823.4 821.6 821.5 825.0 826.8 829.2 820.3 826.6 818.0 DAY-HOUR 19-12 21-12 25-15 13-15 29-15 6-15 9-15 27-12 5-12 31-12 18-12 5-12 2002 824.5 823.1 822.6 818.2 825.1 821.4 821.8 822.8 828.2 829.4 828.5 819.9 818.2 DAY-HOUR 8-12 25-12 28-12 3-12 12-15 20-15 24-15 17-12 10-15 21-15 12-12 21-12 2003 818.0 817.2 816.9 826.3 827.4 820.6 821.2 825.4 826.7 829.2 827.7 824.9 816.9 DAY-HOUR 28-12 20-12 26-12 20-15 23-12 30-15 1- 0 1- 0 7-12 27-12 14-12 6-12 2004 822.4 822.9 823.1 819.5 818.0 823.0 823.2 823.6 828.7 831.0 823.2 825.2 818.0 DAY-HOUR 23-15 15-12 31-15 17-12 13-12 17-15 10-12 4-15 11-15 21-12 23-12 16-12 2005 817.9 824.2 818.4 827.0 821.6 821.1 820.7 823.8 826.4 828.6 828.2 824.6 817.9 DAY-HOUR 23- 3 5- 3 24-12 27-12 5-12 20-15 6-15 7-15 5-15 20-12 8-12 24- 3 1992-2005 816.6 817.2 816.4 818.2 818.0 820.6 819.9 822.7 822.9 826.4 820.3 819.8 816.4 YEAR-DAY 98-13 3-20 97-29 2- 3 4-13 3-30 98- 8 0-30 0- 1 96-27 1-18 94- 4 97-29 =============================================================================================== TEHRAN 2006,MAY M.(S & A) STATION NATANZ (99421) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) FORM 46 LATITUDE 33 32 N LONGITUDE 51 54 E DATA PROCESSING CENTER ELEVATION 1684.9 M AVERAGE OF QNH PRESSURE IN HPA YEAR JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL 1992 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1993 ****** ****** 1017.6 1017.5 1018.6 1016.1 1015.9 1017.8 1019.2 1025.3 1021.2 1022.8 ****** 1994 1020.1 1016.3 1017.5 1019.5 1018.5 1013.5 1012.2 1014.3 1022.6 1024.5 1020.5 1020.6 1018.3 1995 1021.2 1018.1 1017.9 1017.3 1020.0 1015.5 1011.9 1015.9 1018.7 1022.5 1021.4 1021.7 1018.5 1996 1020.2 1017.0 1015.2 1018.2 1019.2 1015.9 1017.4 1017.3 1017.7 1022.2 1024.7 1022.7 1019.0 1997 1017.9 1017.8 1013.8 1016.4 1019.6 1016.0 1012.3 1016.2 1020.3 1022.7 1022.6 1019.7 1017.9 1998 1016.8 1017.6 1016.9 1018.3 1019.1 1018.5 1014.6 1018.3 1019.1 1023.1 1023.7 1024.0 1019.2 1999 1019.8 1017.7 1016.5 1018.3 1017.9 1015.3 1014.0 1017.4 1018.0 1022.0 1021.2 1024.4 1018.5 2000 1017.4 1018.2 1016.9 1018.7 1016.4 1014.8 1016.2 1017.2 1018.0 1022.4 1023.5 1020.6 1018.4 2001 1020.8 1018.3 1018.1 1018.2 1016.3 1014.3 1014.4 1017.9 1019.8 1022.1 1021.4 1022.2 1018.6 2002 1019.6 1019.6 1018.3 1015.8 1016.9 1015.6 1016.0 1015.0 1020.6 1022.9 1023.3 1019.1 1018.6 2003 1019.5 1015.3 1016.6 1018.7 1019.7 1014.5 1012.2 1017.7 1019.4 1022.3 1022.9 1022.6 1018.4 2004 1016.9 1018.7 1020.6 1017.4 1016.6 1016.1 1016.2 1015.8 1021.6 1024.8 1021.4 1020.1 1018.9 2005 1018.4 1016.9 1016.6 1020.6 1018.4 1015.7 1015.2 1016.4 1018.7 1023.8 1023.0 1022.7 1018.9 MEAN 1019.0 1017.6 1017.1 1018.1 1018.3 1015.5 1014.5 1016.7 1019.5 1023.1 1022.4 1021.8 1018.6 =============================================================================================== TEHRAN 2006,MAY M.(S & A) STATION NATANZ (99421) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) FORM 47 LATITUDE 33 32 N LONGITUDE 51 54 E DATA PROCESSING CENTER ELEVATION 1684.9 M MAX. OF QNH PRESSURE IN HPA YEAR JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL 1992 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY-HOUR **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** 1993 ****** ****** 1026.8 1024.9 1024.1 1025.1 1022.6 1023.1 1026.4 1031.5 1028.6 1030.3 ****** DAY-HOUR **-** **-** 31- 6 1- 6 9- 6 23- 6 27- 6 31- 6 23- 6 17- 6 21- 6 26- 6 1994 1029.7 1024.1 1024.4 1029.5 1024.2 1020.0 1017.2 1020.5 1031.3 1030.8 1029.4 1026.9 1031.3 DAY-HOUR 10- 6 20- 6 18- 6 5- 6 18- 6 9- 6 2- 6 15- 6 23- 6 9- 6 2- 6 22- 6 1995 1030.3 1024.2 1027.4 1022.7 1025.5 1022.1 1017.3 1021.4 1026.0 1031.4 1028.8 1026.7 1031.4 DAY-HOUR 7- 6 1- 6 3- 6 13- 6 26- 6 1- 6 4- 6 25- 6 13- 6 25- 6 16- 3 10- 6 1996 1027.9 1023.8 1021.2 1023.5 1024.4 1020.9 1023.9 1025.9 1026.7 1031.8 1035.2 1029.1 1035.2 DAY-HOUR 26- 6 13- 6 29- 6 4- 6 17- 6 27- 6 4- 6 29- 6 25- 6 2- 6 18- 6 2- 6 1997 1025.4 1025.9 1028.5 1023.8 1026.4 1021.3 1017.4 1021.2 1027.2 1028.6 1033.3 1028.2 1033.3 DAY-HOUR 19- 6 17- 6 11- 6 23- 6 12- 6 11- 6 19- 6 28- 6 19- 6 9- 6 8- 6 28- 6 1998 1026.2 1031.4 1025.7 1030.0 1028.0 1025.3 1024.6 1024.1 1024.0 1030.0 1030.8 1031.9 1031.9 DAY-HOUR 4- 6 23- 6 28- 6 12- 6 8- 6 17- 3 20- 6 25- 6 29- 6 10- 6 21- 6 9- 6 1999 1031.7 1025.9 1025.1 1023.4 1027.3 1022.2 1020.2 1025.2 1025.2 1026.1 1027.8 1031.4 1031.7 DAY-HOUR 2- 6 12- 6 31- 6 30- 9 28- 6 1- 6 19- 6 20- 6 30- 6 1- 6 14- 6 6- 6 2000 1026.2 1026.0 1024.1 1024.9 1022.1 1021.9 1024.5 1022.7 1025.4 1027.8 1033.1 1028.8 1033.1 DAY-HOUR 31- 6 11- 6 27- 6 2- 6 4- 6 17- 6 30- 6 23- 6 29- 6 16- 6 17- 6 4- 6 2001 1025.1 1028.4 1027.9 1027.2 1021.5 1022.9 1022.4 1023.1 1027.1 1031.0 1029.9 1028.4 1031.0 DAY-HOUR 10- 6 10- 6 1- 6 2- 6 13- 6 2- 6 29- 6 5- 6 22- 6 10- 6 2- 6 28- 6 2002 1027.7 1030.5 1030.7 1025.4 1022.8 1023.8 1022.2 1021.8 1026.8 1029.9 1032.4 1030.3 1032.4 DAY-HOUR 26- 6 6- 6 11- 6 1- 6 17- 6 25- 6 29- 6 31- 6 21- 6 10- 6 18- 6 3- 6 2003 1027.5 1023.1 1027.2 1026.5 1026.8 1020.9 1020.3 1022.2 1027.2 1029.0 1033.4 1031.8 1033.4 DAY-HOUR 8- 6 6- 6 2- 6 8- 3 2- 6 3- 6 3- 6 30- 6 27- 6 15- 6 25- 6 12- 6 2004 1024.0 1026.2 1029.0 1024.5 1022.4 1024.4 1022.7 1021.5 1027.5 1030.6 1027.3 1031.3 1031.3 DAY-HOUR 12- 6 10- 6 9- 6 11- 6 22-12 6- 6 18- 6 18- 6 25- 6 27- 6 1- 6 3- 6 2005 1026.9 1025.7 1022.6 1028.6 1023.9 1022.1 1021.2 1021.6 1022.8 1031.2 1028.0 1029.8 1031.2 DAY-HOUR 9- 6 17- 9 30- 6 6- 6 18- 9 16- 6 28- 6 27- 6 10- 6 12- 6 23-15 29- 6 1992-2005 1031.7 1031.4 1030.7 1030.0 1028.0 1025.3 1024.6 1025.9 1031.3 1031.8 1035.2 1031.9 1035.2 YEAR-DAY 99- 2 98-23 2-11 98-12 98- 8 98-17 98-20 96-29 94-23 96- 2 96-18 98- 9 96-18 =============================================================================================== TEHRAN 2006,MAY M.(S & A) STATION NATANZ (99421) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) FORM 48 LATITUDE 33 32 N LONGITUDE 51 54 E DATA PROCESSING CENTER ELEVATION 1684.9 M MIN. OF QNH PRESSURE IN HPA YEAR JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL 1992 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY-HOUR **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** 1993 ****** ****** 1008.0 1010.2 1013.3 1009.6 1009.7 1010.3 1013.6 1017.2 1009.6 1013.6 ****** DAY-HOUR **-** **-** 5-15 13-12 7-12 3-15 12-12 12-15 3-12 28-12 14- 3 4-12 1994 1010.8 1006.4 1006.1 1009.7 1010.4 1007.5 1007.7 1008.9 1014.9 1018.2 1010.2 1005.0 1005.0 DAY-HOUR 25-12 1- 6 12-12 2-12 1-12 4-15 7-15 2-12 1-15 2-12 26- 3 4-12 1995 1014.1 1006.9 1006.8 1011.6 1014.4 1007.1 1006.3 1010.2 1010.7 1014.0 1010.8 1016.2 1006.3 DAY-HOUR 11-12 5- 3 17-12 24-15 10-12 22-12 16-15 22-15 20-12 12-12 25-12 4- 3 1996 1010.4 1004.5 1008.6 1009.4 1012.4 1009.3 1009.1 1010.3 1010.6 1012.8 1018.0 1016.3 1004.5 DAY-HOUR 6-12 5- 3 13-12 10-12 29-12 19-12 7-15 8-15 20-12 27-12 29-12 25- 3 1997 1004.5 1010.8 1001.0 1006.4 1010.0 1009.7 1006.6 1009.3 1013.7 1017.9 1017.5 1010.2 1001.0 DAY-HOUR 16- 3 5-15 29-12 9-15 4-15 24-15 16-15 5-15 3-12 23-12 19-12 10- 3 1998 1001.2 1005.7 1005.0 1009.1 1009.4 1012.4 1005.1 1012.9 1013.2 1015.4 1017.6 1015.3 1001.2 DAY-HOUR 13- 3 15- 9 18-15 23-15 29-12 29-15 8-15 22-15 3-15 1-12 1-12 24- 3 1999 1009.9 1006.0 1009.1 1008.3 1006.8 1006.1 1009.1 1011.7 1012.1 1016.0 1012.6 1015.7 1006.0 DAY-HOUR 9- 9 20-15 21-12 8-12 20-15 24-15 22-15 14-15 11-15 31-12 26- 9 15-15 2000 1007.6 1004.9 1006.7 1014.0 1010.2 1006.9 1007.5 1008.4 1008.7 1016.5 1017.2 1010.3 1004.9 DAY-HOUR 21-12 7- 3 24-12 10-12 26-15 24-12 11-15 30-15 1-12 1-12 21-12 15- 9 2001 1014.7 1002.9 1004.8 1010.4 1009.3 1007.1 1007.0 1011.1 1013.3 1016.1 1005.6 1013.0 1002.9 DAY-HOUR 19-12 21-12 25-15 13-15 29-15 6-15 9-15 27-12 5-12 31-12 18-12 5-12 2002 1010.6 1008.9 1008.3 1003.1 1011.3 1006.9 1007.4 1008.6 1014.9 1016.3 1015.3 1005.1 1003.1 DAY-HOUR 8-12 25-12 28-12 3-12 12-15 20-15 24-15 17-12 10-15 21-15 12-12 21-12 2003 1002.9 1001.9 1001.6 1012.7 1014.0 1006.0 1006.7 1011.6 1013.2 1016.1 1014.3 1011.0 1001.6 DAY-HOUR 28-12 20-12 26-12 20-15 23-12 30-15 1- 0 1- 0 7-12 27-12 14-12 6-12 2004 1008.1 1008.7 1008.9 1004.7 1002.9 1008.8 1009.0 1009.5 1015.5 1018.2 1009.0 1011.4 1002.9 DAY-HOUR 23-15 15-12 31-15 17-12 13-12 17-15 10-12 4-15 11-15 21-12 23-12 16-12 2005 1002.8 1010.2 1003.4 1013.5 1007.1 1006.6 1006.1 1009.7 1012.8 1015.4 1014.9 1010.7 1002.8 DAY-HOUR 23- 3 5- 3 24-12 27-12 5-12 20-15 6-15 7-15 5-15 20-12 8-12 24- 3 1992-2005 1001.2 1001.9 1001.0 1003.1 1002.9 1006.0 1005.1 1008.4 1008.7 1012.8 1005.6 1005.0 1001.0 YEAR-DAY 98-13 3-20 97-29 2- 3 4-13 3-30 98- 8 0-30 0- 1 96-27 1-18 94- 4 97-29 =============================================================================================== TEHRAN 2006,MAY M.(S & A) STATION NATANZ (99421) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) FORM 49 LATITUDE 33 32 N LONGITUDE 51 54 E DATA PROCESSING CENTER ELEVATION 1684.9 M AVERAGE OF QFF PRESSURE IN HPA YEAR JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL 1992 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1993 ****** ****** 1016.0 1010.4 1008.9 1002.4 1000.9 1003.5 1006.3 1018.3 1019.7 1022.5 ****** 1994 1020.6 1016.7 1013.7 1011.8 1008.3 999.5 996.0 998.1 1012.2 1017.4 1015.7 1023.1 1011.1 1995 1021.3 1017.6 1014.3 1010.5 1010.4 1002.7 995.1 999.5 1006.5 1015.1 1016.9 1024.0 1011.2 1996 1024.6 1016.9 1014.4 1011.9 1008.9 1002.3 1002.8 1002.4 1004.4 1014.6 1023.1 1022.1 1012.4 1997 1018.2 1018.7 1012.4 1009.4 1009.5 1002.0 995.3 999.9 1008.2 1013.6 1020.3 1020.7 1010.7 1998 1019.8 1019.2 1014.3 1010.6 1009.2 1004.1 999.0 1003.3 1006.5 1015.4 1018.4 1021.6 1011.8 1999 1022.0 1015.9 1014.1 1011.4 1006.3 1000.3 999.2 1001.9 1005.3 1012.9 1019.0 1024.6 1011.1 2000 1019.0 1018.9 1014.1 1009.4 1003.9 1000.3 1001.0 1001.9 1005.0 1015.4 1022.3 1021.3 1011.0 2001 1023.2 1018.3 1013.5 1009.1 1004.9 999.7 999.1 1002.3 1007.2 1013.2 1017.7 1021.0 1010.8 2002 1021.5 1018.3 1013.7 1008.9 1005.4 1000.9 999.9 998.2 1006.2 1012.1 1019.7 1020.3 1010.4 2003 1020.0 1014.5 1013.8 1010.9 1009.6 999.5 994.1 1001.9 1006.5 1011.6 1019.9 1023.3 1010.5 2004 1017.3 1016.7 1015.4 1010.6 1005.7 1000.8 1000.4 999.1 1008.6 1015.8 1017.0 1021.9 1010.8 2005 1020.6 1018.5 1011.9 1012.4 1007.8 1000.3 997.6 1000.1 1004.6 1013.8 1019.8 1020.3 1010.7 MEAN 1020.7 1017.5 1014.0 1010.6 1007.6 1001.1 998.5 1000.9 1006.7 1014.6 1019.2 1022.1 1011.1 =============================================================================================== TEHRAN 2006,MAY M.(S & A) STATION NATANZ (99421) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) FORM 50 LATITUDE 33 32 N LONGITUDE 51 54 E DATA PROCESSING CENTER ELEVATION 1684.9 M MAX. OF QFF PRESSURE IN HPA YEAR JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL 1992 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY-HOUR **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** 1993 ****** ****** 1026.8 1018.6 1018.4 1014.1 1007.9 1009.8 1015.2 1024.7 1031.5 1030.3 ****** DAY-HOUR **-** **-** 23- 9 1- 3 9- 3 23- 3 27- 6 25- 3 23- 6 8- 3 15- 6 6-15 1994 1032.2 1030.7 1021.7 1028.2 1016.2 1006.5 1007.0 1005.3 1023.1 1024.8 1023.9 1037.9 1037.9 DAY-HOUR 10- 3 19-15 17- 3 5- 6 18- 6 8- 9 2- 3 22- 6 23- 6 24- 6 10- 3 7- 9 1995 1031.2 1024.8 1026.0 1018.3 1017.7 1014.3 1001.5 1006.5 1017.5 1027.6 1028.0 1029.9 1031.2 DAY-HOUR 7-15 25- 6 3- 6 7- 6 29- 6 1- 3 4- 6 25- 6 22- 3 27- 3 28- 3 10- 6 1996 1032.9 1026.1 1021.1 1024.6 1014.9 1010.4 1009.2 1013.8 1016.1 1024.8 1036.4 1032.0 1036.4 DAY-HOUR 26- 3 24- 3 1- 6 5- 3 7- 6 28- 3 4- 6 30- 3 25- 3 20- 3 18- 6 4- 3 1997 1028.1 1031.3 1028.9 1021.8 1017.6 1008.6 1002.2 1006.3 1017.1 1019.0 1032.2 1032.3 1032.3 DAY-HOUR 19- 6 7-15 11- 6 12- 3 7- 6 14-15 8- 9 28- 6 15- 6 9- 6 8- 6 28-15 1998 1030.7 1035.8 1023.1 1023.3 1021.2 1012.7 1010.9 1009.7 1014.7 1028.2 1028.3 1031.1 1035.8 DAY-HOUR 4- 6 23- 3 4- 3 7- 3 4- 6 17- 3 21- 3 8- 3 13- 3 10- 6 25- 3 29-15 1999 1036.5 1025.6 1025.4 1019.4 1013.7 1008.2 1008.4 1010.8 1015.7 1023.1 1033.1 1034.3 1036.5 DAY-HOUR 2-15 11- 6 19- 3 11- 6 2- 3 17- 3 28- 6 20- 6 29- 6 27- 6 30-15 6- 3 2000 1028.8 1029.8 1022.9 1018.5 1010.8 1010.2 1010.2 1008.3 1015.9 1025.7 1033.4 1029.6 1033.4 DAY-HOUR 30-15 11- 3 1- 3 2- 6 3- 6 14- 3 30- 6 12- 6 29-15 16- 6 17- 6 4- 3 2001 1032.4 1029.9 1026.9 1019.6 1015.5 1010.5 1008.9 1010.0 1019.2 1022.9 1029.7 1028.1 1032.4 DAY-HOUR 30- 3 10- 6 11-15 2- 3 13- 9 2- 3 29- 6 12- 6 22- 6 10- 6 20- 6 22-15 2002 1032.0 1029.8 1029.0 1021.1 1013.4 1011.2 1008.6 1007.8 1013.8 1017.7 1031.3 1031.3 1032.0 DAY-HOUR 14-15 5- 6 11- 6 1- 6 14- 6 25- 6 30- 3 31- 6 30- 6 10- 6 18- 3 3- 6 2003 1027.9 1023.8 1032.3 1018.8 1020.8 1008.6 1003.9 1007.8 1017.0 1019.0 1034.9 1039.0 1039.0 DAY-HOUR 23- 6 6- 6 2- 6 2- 6 2- 6 3- 6 3- 6 3-18 27- 3 15- 3 25- 6 12- 6 2004 1028.1 1025.5 1025.8 1021.7 1012.9 1010.9 1008.1 1007.0 1017.6 1023.9 1028.9 1035.8 1035.8 DAY-HOUR 1- 3 8- 9 22- 6 1- 9 4-15 6- 6 18- 9 30- 6 30- 6 27- 6 29- 3 4- 3 2005 1033.4 1030.2 1021.8 1027.7 1014.1 1008.9 1005.7 1006.5 1009.4 1025.1 1026.0 1034.5 1034.5 DAY-HOUR 13- 3 15- 6 27- 6 6- 6 22- 6 10- 3 28- 6 18- 6 2- 6 24- 6 15- 6 31- 6 1992-2005 1036.5 1035.8 1032.3 1028.2 1021.2 1014.3 1010.9 1013.8 1023.1 1028.2 1036.4 1039.0 1039.0 YEAR-DAY 99- 2 98-23 3- 2 94- 5 98- 4 95- 1 98-21 96-30 94-23 98-10 96-18 3-12 3-12 =============================================================================================== TEHRAN 2006,MAY M.(S & A) STATION NATANZ (99421) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) FORM 51 LATITUDE 33 32 N LONGITUDE 51 54 E DATA PROCESSING CENTER ELEVATION 1684.9 M MIN. OF QFF PRESSURE IN HPA YEAR JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL 1992 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY-HOUR **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** 1993 ****** ****** 1004.1 1001.3 1001.1 995.9 994.5 995.6 996.9 1005.6 1004.1 1013.2 ****** DAY-HOUR **-** **-** 8-12 20-15 31-12 15-12 12-12 12-15 3-12 2-15 11- 9 5- 9 1994 1010.6 1000.3 998.1 1000.7 1002.2 992.5 989.4 990.3 1001.3 1008.3 1006.0 1002.7 989.4 DAY-HOUR 4- 9 1- 6 7-12 2-12 13-12 25-15 20-12 2-12 2-12 2-12 26- 3 4- 9 1995 1010.6 1002.0 999.4 1003.7 1003.0 991.2 986.7 991.3 996.3 1003.6 1005.0 1016.7 986.7 DAY-HOUR 11-12 5- 3 26-12 17-12 7-12 22-12 16-12 22-15 20-12 12-12 11-12 4- 3 1996 1007.6 1003.2 1006.2 999.9 999.3 994.2 993.1 994.1 997.8 1002.6 1013.9 1011.6 993.1 DAY-HOUR 6-12 10-15 26- 3 10-12 29-15 5-15 7-15 8-12 18-12 27-12 3-12 29-12 1997 1000.5 1003.7 996.5 998.7 999.2 994.5 988.9 991.3 997.9 1004.9 1013.4 1007.6 988.9 DAY-HOUR 16- 3 22-12 29-12 9-15 4-12 17-12 16-12 5-15 3-12 6-12 5-15 10- 9 1998 1005.0 1000.9 998.6 1001.2 995.1 995.3 988.5 997.2 997.5 1003.0 1009.2 1010.9 988.5 DAY-HOUR 13- 3 8- 3 18-15 21- 6 29-12 29-15 8-15 20-12 3-15 1-12 10-12 24-12 1999 1006.8 1001.3 1002.0 999.5 991.9 989.6 991.0 995.9 997.3 1007.3 1005.7 1014.3 989.6 DAY-HOUR 9- 9 20-15 21-12 14-12 20-12 24-15 23-15 13-15 15-12 19-12 26- 9 15- 9 2000 1006.4 1003.8 994.6 1001.6 994.2 989.2 989.8 991.5 993.6 1005.8 1013.3 1010.8 989.2 DAY-HOUR 21-12 7- 3 24-12 10-12 26-15 24-12 11-15 30-12 1-12 1- 9 2-12 11- 6 2001 1015.0 998.8 998.1 998.3 994.6 991.3 987.4 993.1 998.0 1003.7 999.3 1009.2 987.4 DAY-HOUR 4- 3 21-12 25- 3 26-12 29-15 29-12 10-12 24-12 5-12 1-12 18-12 20-12 2002 1006.6 1001.5 1000.0 1000.4 997.1 990.9 990.7 990.5 998.5 1006.0 1005.4 1003.5 990.5 DAY-HOUR 8-12 25-12 28-12 3-12 20-12 19-15 24-15 7-12 11-12 14-12 12-12 21-12 2003 1002.3 996.8 992.9 1002.0 1002.0 990.0 988.0 994.5 997.1 1005.0 1009.4 1007.2 988.0 DAY-HOUR 28-15 20-12 26-12 28-12 23-15 30-15 25- 0 1- 0 7-15 27-12 14-12 19-12 2004 1006.8 1002.3 1000.7 996.3 989.4 993.5 992.1 991.1 999.3 1006.9 1001.6 1008.1 989.4 DAY-HOUR 23-15 15-12 31-12 17- 0 13-12 17-15 10-12 4-12 11-15 3-12 23-12 16- 9 2005 1003.5 1005.6 996.4 1001.0 997.7 988.9 987.1 989.8 997.5 1003.2 1008.8 1005.2 987.1 DAY-HOUR 3- 9 1-12 24- 9 26-12 3-15 20-15 6-15 7-15 5-15 20-15 6- 6 24- 3 1992-2005 1000.5 996.8 992.9 996.3 989.4 988.9 986.7 989.8 993.6 1002.6 999.3 1002.7 986.7 YEAR-DAY 97-16 3-20 3-26 4-17 4-13 5-20 95-16 5- 7 0- 1 96-27 1-18 94- 4 95-16 =============================================================================================== TEHRAN 2006,MAY M.(S & A) STATION NATANZ (99421) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) FORM 52 LATITUDE 33 32 N LONGITUDE 51 54 E DATA PROCESSING CENTER ELEVATION 1684.9 M AVERAGE OF COMPUTED QFF PRESSURE IN HPA YEAR JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL 1992 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1993 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1994 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1995 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1996 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1997 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1998 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 1999 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 2000 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 2001 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 2002 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** 2003 ****** ****** ****** ****** ****** ****** 994.0 1001.7 1006.3 1011.4 ****** ****** ****** 2004 ****** ****** ****** 1010.2 ****** ****** ****** ****** ****** ****** ****** ****** ****** 2005 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MEAN ****** ****** ****** 1010.2 ****** ****** 994.0 1001.7 1006.3 1011.4 ****** ****** 1004.7 =============================================================================================== TEHRAN 2006,MAY M.(S & A) STATION NATANZ (99421) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) FORM 53 LATITUDE 33 32 N LONGITUDE 51 54 E DATA PROCESSING CENTER ELEVATION 1684.9 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 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY-HOUR **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** 1994 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY-HOUR **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** 1995 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY-HOUR **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** 1996 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY-HOUR **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** 1997 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY-HOUR **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** 1998 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY-HOUR **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** 1999 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY-HOUR **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** 2000 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY-HOUR **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** 2001 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY-HOUR **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** 2002 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY-HOUR **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** 2003 ****** ****** ****** ****** ****** ****** 1003.8 1007.6 1016.7 1018.7 ****** ****** ****** DAY-HOUR **-** **-** **-** **-** **-** **-** 3- 6 3-18 27- 6 15- 3 **-** **-** 2004 ****** ****** ****** 1018.2 ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY-HOUR **-** **-** **-** 8- 6 **-** **-** **-** **-** **-** **-** **-** **-** 2005 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY-HOUR **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** 1992-2005 ****** ****** ****** 1018.2 ****** ****** 1003.8 1007.6 1016.7 1018.7 ****** ****** 1018.7 YEAR-DAY **-** **-** **-** 4- 8 **-** **-** 3- 3 3- 3 3-27 3-15 **-** **-** 3-15 =============================================================================================== TEHRAN 2006,MAY M.(S & A) STATION NATANZ (99421) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) FORM 54 LATITUDE 33 32 N LONGITUDE 51 54 E DATA PROCESSING CENTER ELEVATION 1684.9 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 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY-HOUR **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** 1994 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY-HOUR **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** 1995 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY-HOUR **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** 1996 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY-HOUR **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** 1997 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY-HOUR **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** 1998 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY-HOUR **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** 1999 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY-HOUR **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** 2000 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY-HOUR **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** 2001 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY-HOUR **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** 2002 ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY-HOUR **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** **-** 2003 ****** ****** ****** ****** ****** ****** 989.1 994.0 997.1 1004.8 ****** ****** ****** DAY-HOUR **-** **-** **-** **-** **-** **-** 18-15 1- 0 7-15 27-12 **-** **-** 2004 ****** ****** ****** 996.3 ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY-HOUR **-** **-** **-** 17- 3 **-** **-** **-** **-** **-** **-** **-** **-** 2005 ****** ****** *****