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