STATION BOJNURD (40723) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 37 28 N LONGITUDE 57 19 E DATA PROCESSING CENTER ELEVATION 1091.0 M MEANS AND EXTREMES FOR THE YEAR 1977 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. 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OF WIND OBSERVATION **** **** 155 **** 155 150 155 155 150 155 150 155 1380 VECTOR WIND DIRECTION (MEAN) *** *** 266 *** 304 298 298 304 297 265 260 201 *** VECTOR WIND MAGNITUDE(KNOTS) **** **** 1.5 **** 1.1 1.8 1.4 2.4 1.7 1.4 0.2 1.1 **** WIND STEADINESES (MEAN %) ***** ***** 38.5 ***** 40.7 52.9 41.2 68.6 63.0 58.3 20.0 52.4 ***** WIND SPEED (MEAN KNOTS) **** **** 3.9 **** 2.7 3.4 3.4 3.5 2.7 2.4 1.0 2.1 **** FASTEST WIND DIRECTION *** *** 210 *** 220 300 90 270 310 240 270 190 *** FASTEST WIND SPEED (KNOTS) *** *** 20 *** 30 15 15 25 15 20 12 20 *** DAY ** ** 7 ** 25 1 1 19 21 5 11 4 DAYS WITH SKY CLEAR (0-2)/8 **** **** 7 **** 6 20 23 22 23 10 9 5 **** DAYS WITH P.CLOUDY (3-6)/8 **** **** 14 **** 12 10 7 7 7 12 12 12 **** DAYS WITH CLOUDY (7-8)/8 **** **** 10 **** 13 0 1 2 0 9 9 14 **** DAYS WITH VISIBILITY =< 2 KM **** **** 0 **** 1 0 1 0 0 2 4 4 **** DURATION OF SUNSHINE HOURS ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION BOJNURD (40723) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 37 28 N LONGITUDE 57 19 E DATA PROCESSING CENTER ELEVATION 1091.0 M MEANS AND EXTREMES FOR THE YEAR 1977 JAN. 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QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** PRESSURE AT HOUR 0300 UTC. MEAN QFE PRESSURE IN HPA ****** ****** 899.4 ****** 895.1 891.9 890.7 893.4 897.8 898.6 897.7 897.2 ****** MAX. QFE PRESSURE IN HPA ****** ****** 909.0 ****** 900.0 895.2 894.8 898.4 903.9 906.3 904.6 908.2 ****** DAY ** ** 10 ** 29 6 21 23 30 24 27 13 MIN. QFE PRESSURE IN HPA ****** ****** 891.8 ****** 889.6 887.9 887.1 885.6 893.1 889.9 888.2 890.2 ****** DAY ** ** 4 ** 25 22 27 17 12 5 18 10 MEAN QNH PRESSURE IN HPA ****** ****** 1024.7 ****** 1019.9 1016.3 1015.0 1018.0 1022.9 1023.7 1022.8 1022.2 ****** MAX. 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QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** PRESSURE AT HOUR 0900 UTC. MEAN QFE PRESSURE IN HPA ****** ****** 899.0 ****** 894.5 890.9 889.6 892.5 897.2 898.4 897.4 897.1 ****** MAX. QFE PRESSURE IN HPA ****** ****** 909.8 ****** 898.9 894.4 893.6 897.5 905.4 906.7 904.5 906.9 ****** DAY ** ** 9 ** 29 5 21 23 30 23 27 13 MIN. QFE PRESSURE IN HPA ****** ****** 890.2 ****** 889.1 887.1 886.0 884.3 892.7 888.2 888.1 888.3 ****** DAY ** ** 27 ** 25 19 11 17 12 5 18 22 MEAN QNH PRESSURE IN HPA ****** ****** 1024.2 ****** 1019.2 1015.2 1013.8 1017.0 1022.2 1023.5 1022.5 1022.2 ****** MAX. QNH PRESSURE IN HPA ****** ****** 1036.2 ****** 1024.1 1019.1 1018.2 1022.6 1031.3 1032.8 1030.3 1033.0 ****** DAY ** ** 9 ** 29 5 21 23 30 23 27 13 MIN. 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QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION BOJNURD (40723) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 37 28 N LONGITUDE 57 19 E DATA PROCESSING CENTER ELEVATION 1091.0 M MEANS AND EXTREMES FOR THE YEAR 1977 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 1500 UTC. MEAN QFE PRESSURE IN HPA ****** ****** 898.5 ****** 894.2 890.0 888.3 891.1 895.7 897.6 897.2 897.0 ****** MAX. QFE PRESSURE IN HPA ****** ****** 911.2 ****** 898.7 894.7 891.5 895.9 903.6 906.9 904.1 905.6 ****** DAY ** ** 9 ** 28 9 21 23 30 23 26 18 MIN. 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QFF PRESSURE IN HPA ****** ****** 1014.2 ****** 1008.8 1001.3 999.3 999.9 1009.9 1011.0 1013.8 1014.6 ****** DAY ** ** 4 ** 4 21 8 17 15 17 17 22 PRESSURE AT HOUR 1800 UTC. MEAN QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** PRESSURE AT HOUR 2100 UTC. MEAN QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION BOJNURD (40723) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 37 28 N LONGITUDE 57 19 E DATA PROCESSING CENTER ELEVATION 1091.0 M MEANS AND EXTREMES FOR THE YEAR 1978 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AIR TEMPERATURE (C) 1.7 2.1 7.6 14.8 16.9 22.2 26.4 25.0 23.2 15.8 5.3 6.6 14.0 MINIMUN AIR TEMPERATURE (C) -4.3 -3.4 0.2 7.1 9.3 13.0 16.4 14.3 11.7 6.5 0.1 0.8 6.0 DAYS WITH MINIMUM TEMP. >=21 0 0 0 0 0 0 1 1 0 0 0 0 2 DAYS WITH MINIMUM TEMP. <=-4 17 11 5 0 0 0 0 0 0 0 6 6 45 DAYS WITH FREEZING MIN.<= 0 27 22 15 1 0 0 0 0 0 0 19 14 98 TEMPERATURE RECORDS LOWEST(C) -15.0 -13.0 -11.0 0.0 1.0 8.0 11.0 8.0 5.0 1.0 -7.0 -9.0 -15.0 DAY 23 7 1 17 2 4 9 24 29 7 6 24 MAXIMUM AIR TEMPERATURE (C) 7.3 7.0 13.2 20.1 21.9 27.3 31.7 31.5 30.8 22.8 10.3 11.6 19.6 DAYS WITH MAXIMUM TEMP. >=30 0 0 0 2 2 11 24 25 23 0 0 0 87 DAYS WITH MAXIMUM TEMP. <= 0 0 4 0 0 0 0 0 0 0 0 0 0 4 TEMPERATURE RECORDS HIGHEST(C) 16.0 18.0 24.0 30.0 31.0 36.0 40.0 36.0 36.0 28.0 17.0 21.0 40.0 DAY 4 21 31 25 14 21 1 13 12 13 1 12 DIF. BETWEEN (MAX.-MIN.) (C) 11.6 10.4 13.0 13.0 12.6 14.3 15.3 17.2 19.1 16.3 10.2 10.8 13.6 MEAN DAILY TEMP. (MDT) (C) 1.5 1.8 6.7 13.6 15.6 20.2 24.0 22.9 21.2 14.6 5.2 6.2 12.8 COOLING DEG. DAYS(BASE 21 0C) 0.0 0.0 0.0 1.5 0.0 23.5 97.5 67.0 28.0 0.0 0.0 0.0 217.5 HEATING DEG. DAYS(BASE 18 0C) 511.0 453.5 350.5 139.5 92.0 11.5 0.0 0.0 5.0 106.0 383.0 366.0 2418.0 DEWPOINT (MEAN C) -4.8 -2.6 -0.2 5.6 9.5 10.7 11.3 8.5 6.1 5.0 -0.4 -0.8 4.0 MIXING RATIO (G/KG) 3.15 3.72 4.33 6.52 8.56 9.24 9.78 8.37 7.02 6.26 4.25 4.20 6.28 VAPOUR PRESSURE (HPA) 4.51 5.32 6.17 9.24 12.11 13.03 13.79 11.83 9.97 8.96 6.11 6.01 8.92 SATURATION DEF. (HPA) 2.85 2.45 5.29 8.93 8.41 15.09 22.20 21.46 20.51 10.00 3.15 4.36 10.39 RELATIVE HUMIDITY (MEAN %) 65 73 62 60 65 52 43 40 39 53 69 64 57 RELATIVE HUMIDITY (MAX. %) 78 87 85 85 86 76 69 66 65 79 85 82 79 RELATIVE HUMIDITY (MIN. %) 52 61 45 43 52 39 29 25 21 33 55 47 42 RELATIVE HUMIDITY (MEAN% 03UTC) 74 85 83 83 85 75 69 66 65 78 83 79 77 RELATIVE HUMIDITY (MEAN% 09UTC) 57 66 52 49 55 44 35 29 26 41 60 56 48 RELATIVE HUMIDITY (MEAN% 15UTC) 67 74 60 55 63 45 34 33 35 51 73 61 54 RH=0 => RELATIVE HUMIDITY < 0.5% AMOUNT OF PRECIPITATION MM. 21.4 68.2 27.5 42.8 71.0 1.9 0.0 0.0 13.0 0.4 25.4 11.9 283.5 DAYS WITH PRECIPITATION >=10 0 2 0 2 3 0 0 0 1 0 1 0 9 DAYS WITH PRECIPITATION >= 5 2 5 3 4 5 0 0 0 1 0 2 0 22 DAYS WITH PRECIPITATION >= 1 5 9 5 7 9 1 0 0 1 0 6 6 49 DAYS WITH PRECIPITATION 9 10 10 16 13 4 0 0 1 4 11 9 87 GREATEST DAILY PRECIPITATION 8.0 19.0 7.0 15.0 19.1 1.0 0.0 0.0 13.0 0.1 12.0 3.0 19.1 DAY 22 23 13 15 2 2 ** ** 26 2 19 8 DAY WITH THUNDER STORM 0 0 1 5 8 2 0 0 0 0 1 0 17 DAYS WITH SNOW OR SLEET 4 8 3 0 1 0 0 0 0 0 3 2 21 DAYS WITH DUST 1 0 0 1 0 0 1 1 1 1 0 0 6 WIND DIRECTION (PREVAILING) 180 270 270 315 270 270 315 270 315 315 270 180 270 PREVAILING WIND SPEED(KNOTS) 9.6 6.8 6.0 7.1 7.5 7.8 7.2 8.8 8.3 7.2 7.2 11.1 7.5 PREVAILING WIND PERCENT 9.7 10.0 16.8 15.3 18.1 21.3 20.6 12.9 11.3 11.6 10.0 22.6 11.6 CALMS PERCENT OF WIND 75.5 67.9 61.3 56.0 54.2 46.7 41.9 59.4 67.3 75.5 74.7 51.6 60.9 NO. OF WIND OBSERVATION 155 140 155 150 155 150 155 155 150 155 150 155 1825 VECTOR WIND DIRECTION (MEAN) 194 283 274 273 288 299 323 311 332 273 268 188 278 VECTOR WIND MAGNITUDE(KNOTS) 1.4 0.8 1.5 2.0 1.6 2.3 2.6 1.7 1.1 1.4 0.9 2.9 1.2 WIND STEADINESES (MEAN %) 66.7 40.0 57.7 60.6 51.6 54.8 60.5 54.8 40.7 70.0 50.0 69.0 41.4 WIND SPEED (MEAN KNOTS) 2.1 2.0 2.6 3.3 3.1 4.2 4.3 3.1 2.7 2.0 1.8 4.2 2.9 FASTEST WIND DIRECTION 180 290 200 190 270 300 270 270 270 210 170 180 210 FASTEST WIND SPEED (KNOTS) 15 15 20 20 15 15 15 15 15 25 20 20 25 DAY 1 12 12 6 7 2 19 9 25 31 7 16 DAYS WITH SKY CLEAR (0-2)/8 10 10 11 2 7 17 27 27 25 13 7 8 164 DAYS WITH P.CLOUDY (3-6)/8 11 7 10 16 13 10 4 4 5 15 11 12 118 DAYS WITH CLOUDY (7-8)/8 10 11 10 12 11 3 0 0 0 3 12 11 83 DAYS WITH VISIBILITY =< 2 KM 2 6 0 1 2 0 0 0 0 0 0 1 12 DURATION OF SUNSHINE HOURS ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION BOJNURD (40723) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 37 28 N LONGITUDE 57 19 E DATA PROCESSING CENTER ELEVATION 1091.0 M MEANS AND EXTREMES FOR THE YEAR 1978 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL MEAN QFE PRESSURE IN HPA 897.0 897.1 894.3 891.1 893.0 891.0 892.1 892.1 894.3 898.9 899.5 895.4 894.6 MAX. QFE PRESSURE IN HPA 907.9 908.3 902.3 899.5 901.5 903.5 899.2 898.5 902.1 907.0 907.8 911.2 911.2 DAY-HOUR 13- 6 6- 6 19-15 12- 3 3- 3 8- 3 8- 3 21- 6 28- 6 10- 6 27- 6 24- 6 MIN. QFE PRESSURE IN HPA 883.5 887.3 880.6 879.6 884.0 877.9 881.1 886.7 888.0 890.5 888.7 883.0 877.9 DAY-HOUR 21- 9 22- 3 13-12 25-15 30- 9 21-12 1-15 14-12 1-15 1- 3 1- 0 16- 9 MEAN QNH PRESSURE IN HPA 1022.0 1022.1 1019.0 1015.4 1017.5 1015.4 1016.5 1016.6 1018.9 1024.2 1024.8 1020.3 1019.4 MAX. QNH PRESSURE IN HPA 1034.1 1034.6 1027.9 1024.8 1027.0 1029.2 1024.5 1023.7 1027.7 1033.1 1034.0 1037.8 1037.8 DAY-HOUR 13- 6 6- 6 19-15 12- 3 3- 3 8- 3 8- 3 21- 6 28- 6 10- 6 27- 6 24- 6 MIN. QNH PRESSURE IN HPA 1007.0 1011.2 1003.8 1002.7 1007.6 1000.8 1004.3 1010.6 1012.0 1014.8 1012.8 1006.4 1000.8 DAY-HOUR 21- 9 22- 3 13-12 25-15 30- 9 21-12 1-15 14-12 1-15 1- 3 1- 0 16- 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 897.1 896.7 894.5 891.4 893.5 892.0 893.2 893.3 895.2 899.4 899.8 895.3 895.1 MAX. QFE PRESSURE IN HPA 907.5 908.0 901.6 899.5 901.5 903.5 899.2 897.8 901.5 905.2 906.9 909.5 909.5 DAY 13 6 20 12 3 8 8 21 28 10 27 24 MIN. QFE PRESSURE IN HPA 884.0 887.3 885.0 885.3 884.6 882.8 885.4 888.9 889.9 890.5 889.2 883.8 882.8 DAY 21 22 12 10 30 22 1 14 2 1 1 16 MEAN QNH PRESSURE IN HPA 1022.1 1021.7 1019.2 1015.7 1018.1 1016.5 1017.8 1017.9 1020.0 1024.6 1025.1 1020.1 1019.9 MAX. QNH PRESSURE IN HPA 1033.7 1034.2 1027.1 1024.8 1027.0 1029.2 1024.5 1022.9 1027.0 1031.1 1033.0 1035.9 1035.9 DAY 13 6 20 12 3 8 8 21 28 10 27 24 MIN. QNH PRESSURE IN HPA 1007.6 1011.2 1008.7 1009.0 1008.2 1006.2 1009.1 1013.0 1014.1 1014.8 1013.3 1007.3 1006.2 DAY 21 22 12 10 30 22 1 14 2 1 1 16 MEAN QFF PRESSURE IN HPA 1026.6 1025.8 1021.0 1013.7 1014.8 1011.0 1010.5 1011.5 1015.0 1022.9 1027.6 1021.9 1018.5 MAX. QFF PRESSURE IN HPA 1040.5 1042.9 1030.8 1025.5 1029.2 1025.3 1018.9 1017.6 1024.7 1030.3 1037.7 1043.5 1043.5 DAY 13 6 20 12 3 8 8 30 28 11 6 24 MIN. QFF PRESSURE IN HPA 1007.4 1009.9 1006.8 1003.0 1003.7 998.7 1000.8 1006.0 1008.1 1011.1 1008.1 1006.8 998.7 DAY 21 22 25 10 30 22 1 14 2 1 1 16 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION BOJNURD (40723) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 37 28 N LONGITUDE 57 19 E DATA PROCESSING CENTER ELEVATION 1091.0 M MEANS AND EXTREMES FOR THE YEAR 1978 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 0600 UTC. MEAN QFE PRESSURE IN HPA 897.8 897.9 895.2 892.0 893.5 891.9 893.2 893.5 895.7 900.2 900.8 896.7 895.7 MAX. QFE PRESSURE IN HPA 907.9 908.3 902.2 899.3 901.5 903.2 898.5 898.5 902.1 907.0 907.8 911.2 911.2 DAY 13 6 19 12 3 8 8 21 28 10 27 24 MIN. QFE PRESSURE IN HPA 883.7 889.7 884.4 885.0 884.1 882.9 884.8 888.6 890.3 893.9 891.0 884.8 882.9 DAY 21 22 12 25 30 22 1 14 2 1 8 16 MEAN QNH PRESSURE IN HPA 1022.9 1023.0 1020.0 1016.5 1018.2 1016.3 1017.8 1018.2 1020.6 1025.6 1026.3 1021.7 1020.6 MAX. QNH PRESSURE IN HPA 1034.1 1034.6 1027.8 1024.6 1027.0 1028.9 1023.7 1023.7 1027.7 1033.1 1034.0 1037.8 1037.8 DAY 13 6 19 12 3 8 8 21 28 10 27 24 MIN. QNH PRESSURE IN HPA 1007.2 1013.9 1008.0 1008.7 1007.7 1006.3 1008.4 1012.7 1014.6 1018.6 1015.3 1008.4 1006.3 DAY 21 22 12 25 30 22 1 14 2 1 8 16 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** PRESSURE AT HOUR 0900 UTC. MEAN QFE PRESSURE IN HPA 896.9 897.7 894.4 891.2 892.9 891.0 892.0 892.2 894.2 899.1 899.4 895.4 894.7 MAX. QFE PRESSURE IN HPA 907.0 907.4 901.8 898.8 900.6 902.1 897.4 897.1 899.7 906.4 906.2 908.7 908.7 DAY 13 6 19 13 3 8 7 21 26 10 5 24 MIN. QFE PRESSURE IN HPA 883.5 890.4 882.2 882.0 884.0 881.0 883.2 887.7 889.6 893.5 889.8 883.0 881.0 DAY 21 17 13 25 30 21 1 14 2 29 8 16 MEAN QNH PRESSURE IN HPA 1021.9 1022.7 1019.1 1015.6 1017.4 1015.3 1016.5 1016.7 1018.9 1024.3 1024.7 1020.2 1019.4 MAX. QNH PRESSURE IN HPA 1033.1 1033.6 1027.3 1024.0 1026.0 1027.7 1022.5 1022.1 1025.0 1032.5 1032.2 1035.0 1035.0 DAY 13 6 19 13 3 8 7 21 26 10 5 24 MIN. QNH PRESSURE IN HPA 1007.0 1014.7 1005.6 1005.3 1007.6 1004.2 1006.7 1011.7 1013.8 1018.1 1014.0 1006.4 1004.2 DAY 21 17 13 25 30 21 1 14 2 29 8 16 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** PRESSURE AT HOUR 1200 UTC. MEAN QFE PRESSURE IN HPA 896.2 896.5 893.4 890.3 892.2 890.0 890.9 890.8 892.9 897.8 898.6 894.7 893.7 MAX. QFE PRESSURE IN HPA 906.3 907.5 901.4 897.3 900.3 900.9 896.4 895.5 899.5 905.7 906.3 906.7 907.5 DAY 13 5 19 13 2 8 7 21 26 10 5 24 MIN. QFE PRESSURE IN HPA 884.6 888.7 880.6 881.4 884.5 877.9 881.5 886.7 888.4 891.2 890.2 883.1 877.9 DAY 21 17 13 25 30 21 1 14 1 29 8 16 MEAN QNH PRESSURE IN HPA 1021.2 1021.5 1018.0 1014.6 1016.7 1014.2 1015.2 1015.1 1017.5 1022.9 1023.8 1019.4 1018.3 MAX. QNH PRESSURE IN HPA 1032.3 1033.7 1026.9 1022.3 1025.7 1026.3 1021.3 1020.3 1024.8 1031.7 1032.3 1032.8 1033.7 DAY 13 5 19 13 2 8 7 21 26 10 5 24 MIN. QNH PRESSURE IN HPA 1008.2 1012.8 1003.8 1004.7 1008.1 1000.8 1004.8 1010.6 1012.4 1015.6 1014.4 1006.6 1000.8 DAY 21 17 13 25 30 21 1 14 1 29 8 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 BOJNURD (40723) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 37 28 N LONGITUDE 57 19 E DATA PROCESSING CENTER ELEVATION 1091.0 M MEANS AND EXTREMES FOR THE YEAR 1978 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 1500 UTC. MEAN QFE PRESSURE IN HPA 896.9 896.6 893.9 890.5 892.8 890.3 891.2 890.8 893.3 898.3 899.4 895.2 894.1 MAX. QFE PRESSURE IN HPA 905.9 908.1 902.3 897.9 901.2 899.8 896.9 895.3 901.1 906.1 906.8 908.2 908.2 DAY 13 5 19 13 2 8 7 21 26 10 5 23 MIN. QFE PRESSURE IN HPA 888.0 887.8 883.0 879.6 884.4 877.9 881.1 887.0 888.0 891.6 892.9 885.0 877.9 DAY 21 17 13 25 31 21 1 5 1 29 7 16 MEAN QNH PRESSURE IN HPA 1021.9 1021.6 1018.6 1014.8 1017.3 1014.6 1015.6 1015.1 1017.9 1023.4 1024.7 1020.0 1018.8 MAX. QNH PRESSURE IN HPA 1031.9 1034.3 1027.9 1023.0 1026.7 1025.1 1021.9 1020.1 1026.6 1032.1 1032.9 1034.5 1034.5 DAY 13 5 19 13 2 8 7 21 26 10 5 23 MIN. QNH PRESSURE IN HPA 1012.0 1011.8 1006.4 1002.7 1008.0 1000.8 1004.3 1010.9 1012.0 1016.0 1017.4 1008.7 1000.8 DAY 21 17 13 25 31 21 1 5 1 29 7 16 MEAN QFF PRESSURE IN HPA 1026.3 1025.6 1020.1 1012.7 1014.0 1008.9 1008.4 1008.7 1012.8 1021.6 1027.2 1021.7 1017.3 MAX. QFF PRESSURE IN HPA 1038.7 1040.7 1030.4 1023.5 1028.0 1020.9 1016.9 1014.1 1022.3 1030.1 1036.5 1040.8 1040.8 DAY 13 5 19 13 2 8 7 21 26 10 5 23 MIN. QFF PRESSURE IN HPA 1013.2 1013.5 1005.8 998.2 1003.7 992.8 994.8 1003.8 1006.8 1012.3 1016.6 1008.0 992.8 DAY 21 21 12 25 31 21 1 14 1 29 1 16 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 BOJNURD (40723) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 37 28 N LONGITUDE 57 19 E DATA PROCESSING CENTER ELEVATION 1091.0 M MEANS AND EXTREMES FOR THE YEAR 1979 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AIR TEMPERATURE (C) 0.9 3.5 7.4 15.3 17.0 23.4 28.2 24.3 21.6 16.7 8.0 4.1 14.2 MINIMUN AIR TEMPERATURE (C) -4.2 -1.1 0.8 8.2 8.5 14.4 17.4 13.5 12.2 8.9 0.0 0.1 6.6 DAYS WITH MINIMUM TEMP. >=21 0 0 0 0 0 0 2 1 0 0 0 0 3 DAYS WITH MINIMUM TEMP. <=-4 16 6 7 0 0 0 0 0 0 0 14 2 45 DAYS WITH FREEZING MIN.<= 0 24 18 14 0 0 0 0 0 0 0 18 19 93 TEMPERATURE RECORDS LOWEST(C) -12.0 -14.0 -9.0 1.0 2.0 10.0 13.0 8.0 6.0 5.0 -6.0 -9.0 -14.0 DAY 14 20 6 18 1 1 2 22 25 10 20 23 MAXIMUM AIR TEMPERATURE (C) 5.9 8.4 12.4 21.1 22.2 28.3 34.1 30.7 28.9 24.0 16.7 8.8 20.1 DAYS WITH MAXIMUM TEMP. >=30 0 0 0 1 0 12 31 21 15 1 0 0 81 DAYS WITH MAXIMUM TEMP. <= 0 2 1 1 0 0 0 0 0 0 0 0 1 5 TEMPERATURE RECORDS HIGHEST(C) 17.0 19.0 22.0 30.0 28.0 34.0 39.0 36.0 36.0 32.0 27.0 16.0 39.0 DAY 4 15 19 9 16 30 12 18 8 4 3 6 DIF. BETWEEN (MAX.-MIN.) (C) 10.1 9.5 11.6 12.9 13.7 13.9 16.7 17.2 16.7 15.1 16.7 8.7 13.5 MEAN DAILY TEMP. (MDT) (C) 0.8 3.6 6.6 14.7 15.3 21.4 25.7 22.1 20.5 16.5 8.4 4.4 13.3 COOLING DEG. DAYS(BASE 21 0C) 0.0 0.0 0.0 0.5 0.0 31.0 146.0 47.5 35.0 0.0 0.0 0.0 260.0 HEATING DEG. DAYS(BASE 18 0C) 532.5 402.0 354.0 120.0 92.5 0.5 0.0 0.5 15.0 57.0 288.5 421.0 2283.5 DEWPOINT (MEAN C) -4.9 -1.1 0.1 6.0 5.8 10.0 10.3 5.6 8.5 7.3 -1.6 -0.8 3.8 MIXING RATIO (G/KG) 3.09 4.07 4.51 6.81 6.73 8.84 9.31 6.75 8.18 7.36 4.10 4.10 6.15 VAPOUR PRESSURE (HPA) 4.44 5.81 6.42 9.67 9.58 12.51 13.13 9.58 11.64 10.50 5.89 5.86 8.75 SATURATION DEF. (HPA) 2.78 2.54 5.09 9.26 10.81 17.25 26.85 22.54 15.85 9.56 5.94 2.67 10.93 RELATIVE HUMIDITY (MEAN %) 70 74 65 60 53 46 37 34 48 58 57 73 56 RELATIVE HUMIDITY (MAX. %) 82 88 88 83 79 69 61 57 74 82 86 89 78 RELATIVE HUMIDITY (MIN. %) 58 61 49 41 37 33 23 21 28 38 34 57 40 RELATIVE HUMIDITY (MEAN% 03UTC) 77 86 87 82 79 69 61 57 73 81 82 85 77 RELATIVE HUMIDITY (MEAN% 09UTC) 64 68 55 50 42 38 29 26 36 45 42 64 47 RELATIVE HUMIDITY (MEAN% 15UTC) 71 74 59 55 46 39 28 26 43 55 55 74 52 RH=0 => RELATIVE HUMIDITY < 0.5% AMOUNT OF PRECIPITATION MM. 37.0 47.6 57.0 31.8 41.1 12.2 0.0 3.0 33.0 14.1 20.0 49.2 346.0 DAYS WITH PRECIPITATION >=10 1 1 2 1 2 0 0 0 1 0 1 1 10 DAYS WITH PRECIPITATION >= 5 3 5 2 3 2 1 0 0 3 1 1 5 26 DAYS WITH PRECIPITATION >= 1 10 11 11 3 5 3 0 1 4 4 2 10 64 DAYS WITH PRECIPITATION 11 15 18 13 9 5 0 2 4 5 2 13 97 GREATEST DAILY PRECIPITATION 10.0 10.0 25.4 15.0 19.0 5.0 0.0 3.0 17.0 6.0 18.0 10.0 25.4 DAY 11 9 28 26 7 9 ** 20 14 28 5 9 DAY WITH THUNDER STORM 0 0 1 3 3 2 0 1 1 0 0 0 11 DAYS WITH SNOW OR SLEET 8 10 6 0 0 0 0 0 0 0 0 4 28 DAYS WITH DUST 0 0 0 1 1 0 2 0 0 0 1 0 5 WIND DIRECTION (PREVAILING) 180 270 270 270 270 270 270 360 315 270 180 180 270 PREVAILING WIND SPEED(KNOTS) 12.1 9.3 6.9 8.3 8.8 7.7 9.7 8.2 6.5 7.2 12.1 7.8 8.0 PREVAILING WIND PERCENT 9.7 10.7 16.1 22.7 15.5 16.7 12.9 15.1 7.8 9.1 4.4 13.4 10.6 CALMS PERCENT OF WIND 78.7 72.1 61.3 48.0 60.6 54.7 48.4 50.3 78.3 80.1 83.9 75.3 66.7 NO. OF WIND OBSERVATION 155 140 155 150 155 150 155 159 180 186 180 186 1951 VECTOR WIND DIRECTION (MEAN) 175 267 278 269 303 293 328 338 302 282 203 191 283 VECTOR WIND MAGNITUDE(KNOTS) 1.3 1.3 1.7 2.8 1.9 1.7 1.5 2.5 0.8 1.0 0.8 1.2 1.1 WIND STEADINESES (MEAN %) 68.4 59.1 63.0 63.6 63.3 50.0 34.9 65.8 57.1 71.4 57.1 70.6 42.3 WIND SPEED (MEAN KNOTS) 1.9 2.2 2.7 4.4 3.0 3.4 4.3 3.8 1.4 1.4 1.4 1.7 2.6 FASTEST WIND DIRECTION 200 280 270 210 270 270 270 270 330 270 180 180 280 FASTEST WIND SPEED (KNOTS) 20 30 15 20 15 15 22 15 12 15 30 15 30 DAY 2 18 23 13 24 7 31 2 18 27 29 23 DAYS WITH SKY CLEAR (0-2)/8 10 1 8 3 10 21 27 26 26 15 19 9 175 DAYS WITH P.CLOUDY (3-6)/8 9 11 11 10 12 6 4 5 2 11 8 10 99 DAYS WITH CLOUDY (7-8)/8 12 16 12 17 9 3 0 0 2 5 3 12 91 DAYS WITH VISIBILITY =< 2 KM 9 5 2 0 0 0 0 0 0 1 0 1 18 DURATION OF SUNSHINE HOURS ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION BOJNURD (40723) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 37 28 N LONGITUDE 57 19 E DATA PROCESSING CENTER ELEVATION 1091.0 M MEANS AND EXTREMES FOR THE YEAR 1979 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL MEAN QFE PRESSURE IN HPA 897.6 894.1 894.6 894.0 895.8 893.8 891.5 893.2 897.5 897.6 900.3 895.8 895.5 MAX. QFE PRESSURE IN HPA 910.6 902.9 904.0 905.9 903.6 901.9 898.3 900.2 903.4 907.0 909.2 905.5 910.6 DAY-HOUR 18- 6 13- 6 5- 6 27- 6 25- 6 10-15 20- 6 29- 6 23- 6 9- 6 11- 6 4- 6 MIN. QFE PRESSURE IN HPA 884.8 884.2 882.2 886.0 887.7 886.1 883.4 886.3 890.1 888.1 883.6 883.3 882.2 DAY-HOUR 6- 9 11-15 27-15 12-12 17- 9 23-12 6-15 14-12 5-15 4-12 29-12 1-12 MEAN QNH PRESSURE IN HPA 1022.6 1018.8 1019.3 1018.6 1020.7 1018.4 1015.9 1017.8 1022.6 1022.6 1025.7 1020.7 1020.3 MAX. QNH PRESSURE IN HPA 1037.1 1028.6 1029.8 1031.9 1029.3 1027.5 1023.5 1025.6 1029.1 1033.1 1035.6 1031.5 1037.1 DAY-HOUR 18- 6 13- 6 5- 6 27- 6 25- 6 10-15 20- 6 29- 6 23- 6 9- 6 11- 6 4- 6 MIN. QNH PRESSURE IN HPA 1008.4 1007.8 1005.6 1009.8 1011.7 1009.9 1006.9 1010.1 1014.3 1012.1 1007.1 1006.8 1005.6 DAY-HOUR 6- 9 11-15 27-15 12-12 17- 9 23-12 6-15 14-12 5-15 4-12 29-12 1-12 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** 1017.8 1020.0 ****** 1023.4 ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** 1025.9 1031.3 ****** 1036.3 ****** DAY-HOUR **-** **-** **-** **-** **-** **-** **-** **-** 24- 6 9- 3 **-** 22- 6 MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** 1009.0 1008.2 ****** 1008.4 ****** DAY-HOUR **-** **-** **-** **-** **-** **-** **-** **-** 5-15 4-18 **-** 1- 3 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 897.6 893.9 894.8 894.4 896.3 895.1 892.5 893.8 898.3 898.2 901.0 895.5 895.9 MAX. QFE PRESSURE IN HPA 908.9 901.7 903.0 904.9 903.1 901.9 897.2 899.7 902.6 906.6 908.5 903.7 908.9 DAY 18 13 5 27 25 11 20 29 23 9 11 22 MIN. QFE PRESSURE IN HPA 887.9 885.1 886.2 888.9 888.5 888.9 886.2 887.8 893.0 892.9 886.5 885.9 885.1 DAY 6 12 28 13 17 23 6 14 6 27 29 1 MEAN QNH PRESSURE IN HPA 1022.6 1018.6 1019.5 1019.1 1021.2 1019.9 1017.0 1018.5 1023.4 1023.3 1026.4 1020.4 1020.8 MAX. QNH PRESSURE IN HPA 1035.2 1027.2 1028.7 1030.8 1028.8 1027.5 1022.2 1025.0 1028.2 1032.7 1034.8 1029.5 1035.2 DAY 18 13 5 27 25 11 20 29 23 9 11 22 MIN. QNH PRESSURE IN HPA 1011.9 1008.8 1010.0 1013.0 1012.6 1013.0 1010.0 1011.8 1017.6 1017.4 1010.3 1009.7 1008.8 DAY 6 12 28 13 17 23 6 14 6 27 29 1 MEAN QFF PRESSURE IN HPA 1026.8 1021.6 1021.1 1016.7 1018.2 1013.7 1009.0 1012.5 1018.6 1020.6 1028.4 1022.9 1019.2 MAX. QFF PRESSURE IN HPA 1042.7 1029.6 1034.5 1032.4 1027.6 1023.1 1014.0 1020.3 1025.5 1031.3 1038.3 1035.5 1042.7 DAY 19 19 5 27 25 11 20 29 23 9 19 22 MIN. QFF PRESSURE IN HPA 1011.7 1010.2 1006.4 1007.8 1008.4 1006.3 1002.0 1005.0 1012.0 1014.2 1007.6 1008.4 1002.0 DAY 6 12 27 15 17 23 6 14 6 27 29 1 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION BOJNURD (40723) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 37 28 N LONGITUDE 57 19 E DATA PROCESSING CENTER ELEVATION 1091.0 M MEANS AND EXTREMES FOR THE YEAR 1979 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 0600 UTC. MEAN QFE PRESSURE IN HPA 898.6 894.9 895.7 894.8 896.6 894.8 892.6 894.2 898.8 898.9 901.7 896.7 896.5 MAX. QFE PRESSURE IN HPA 910.6 902.9 904.0 905.9 903.6 901.1 898.3 900.2 903.4 907.0 909.2 905.5 910.6 DAY 18 13 5 27 25 11 20 29 23 9 11 4 MIN. QFE PRESSURE IN HPA 888.3 887.4 885.8 889.1 888.6 888.3 885.8 888.1 894.0 893.9 886.3 887.0 885.8 DAY 6 12 27 13 17 23 6 14 6 4 29 1 MEAN QNH PRESSURE IN HPA 1023.8 1019.7 1020.6 1019.5 1021.5 1019.5 1017.1 1018.9 1024.0 1024.2 1027.3 1021.7 1021.5 MAX. QNH PRESSURE IN HPA 1037.1 1028.6 1029.8 1031.9 1029.3 1026.6 1023.5 1025.6 1029.1 1033.1 1035.6 1031.5 1037.1 DAY 18 13 5 27 25 11 20 29 23 9 11 4 MIN. QNH PRESSURE IN HPA 1012.3 1011.3 1009.6 1013.2 1012.7 1012.3 1009.6 1012.1 1018.7 1018.6 1010.1 1010.9 1009.6 DAY 6 12 27 13 17 23 6 14 6 4 29 1 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** 1018.7 1020.9 1028.8 1024.2 ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** 1025.9 1031.1 1038.9 1036.3 ****** DAY ** ** ** ** ** ** ** ** 24 9 19 22 MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** 1012.3 1013.4 1007.2 1010.1 ****** DAY ** ** ** ** ** ** ** ** 9 4 29 1 PRESSURE AT HOUR 0900 UTC. MEAN QFE PRESSURE IN HPA 897.6 894.3 894.9 894.0 895.8 893.6 891.7 893.2 897.8 897.7 900.4 896.0 895.6 MAX. QFE PRESSURE IN HPA 909.2 902.0 903.3 905.4 903.0 900.6 897.1 899.3 902.4 906.4 907.7 905.3 909.2 DAY 18 13 5 27 27 10 20 29 23 9 11 4 MIN. QFE PRESSURE IN HPA 884.8 885.9 884.9 887.3 887.7 886.9 885.0 887.3 892.6 891.0 884.9 885.1 884.8 DAY 6 11 27 12 17 23 6 14 5 4 29 1 MEAN QNH PRESSURE IN HPA 1022.6 1019.0 1019.7 1018.6 1020.7 1018.3 1016.1 1017.7 1022.8 1022.7 1025.7 1020.9 1020.4 MAX. QNH PRESSURE IN HPA 1035.6 1027.6 1029.0 1031.3 1028.7 1026.0 1022.1 1024.6 1028.0 1032.5 1033.9 1031.2 1035.6 DAY 18 13 5 27 27 10 20 29 23 9 11 4 MIN. QNH PRESSURE IN HPA 1008.4 1009.7 1008.6 1011.2 1011.7 1010.8 1008.7 1011.2 1017.1 1015.3 1008.6 1008.8 1008.4 DAY 6 11 27 12 17 23 6 14 5 4 29 1 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** PRESSURE AT HOUR 1200 UTC. MEAN QFE PRESSURE IN HPA 896.9 893.4 893.7 893.1 895.1 892.6 890.4 892.1 896.4 896.3 899.2 895.0 894.5 MAX. QFE PRESSURE IN HPA 909.1 901.0 902.3 905.2 901.7 901.0 895.4 898.0 901.2 904.7 906.4 903.7 909.1 DAY 18 27 2 27 27 10 20 29 23 9 10 4 MIN. QFE PRESSURE IN HPA 885.4 884.3 883.2 886.0 888.2 886.1 883.8 886.3 890.6 888.1 883.6 883.3 883.2 DAY 6 11 27 12 16 23 6 14 5 4 29 1 MEAN QNH PRESSURE IN HPA 1021.9 1018.0 1018.4 1017.6 1019.9 1017.2 1014.7 1016.5 1021.3 1021.2 1024.4 1019.8 1019.2 MAX. QNH PRESSURE IN HPA 1035.5 1026.5 1027.9 1031.1 1027.2 1026.5 1020.2 1023.1 1026.7 1030.6 1032.5 1029.5 1035.5 DAY 18 27 2 27 27 10 20 29 23 9 10 4 MIN. QNH PRESSURE IN HPA 1009.1 1007.9 1006.7 1009.8 1012.2 1009.9 1007.3 1010.1 1014.9 1012.1 1007.1 1006.8 1006.7 DAY 6 11 27 12 16 23 6 14 5 4 29 1 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION BOJNURD (40723) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 37 28 N LONGITUDE 57 19 E DATA PROCESSING CENTER ELEVATION 1091.0 M MEANS AND EXTREMES FOR THE YEAR 1979 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 1500 UTC. MEAN QFE PRESSURE IN HPA 897.4 894.1 894.0 893.8 895.4 892.7 890.5 892.3 896.5 896.9 899.7 895.7 894.9 MAX. QFE PRESSURE IN HPA 909.3 901.0 902.9 904.8 901.2 901.9 895.2 898.1 901.1 904.8 907.8 903.8 909.3 DAY 18 27 5 27 27 10 20 29 23 9 10 22 MIN. QFE PRESSURE IN HPA 887.9 884.2 882.2 887.5 889.8 886.6 883.4 886.6 890.1 890.2 884.2 886.2 882.2 DAY 6 11 27 12 17 23 6 14 5 4 29 1 MEAN QNH PRESSURE IN HPA 1022.4 1018.8 1018.7 1018.4 1020.2 1017.3 1014.8 1016.8 1021.5 1021.9 1025.0 1020.5 1019.7 MAX. QNH PRESSURE IN HPA 1035.7 1026.5 1028.6 1030.7 1026.7 1027.5 1020.0 1023.2 1026.6 1030.7 1034.0 1029.6 1035.7 DAY 18 27 5 27 27 10 20 29 23 9 10 22 MIN. QNH PRESSURE IN HPA 1011.9 1007.8 1005.6 1011.4 1014.0 1010.4 1006.9 1010.4 1014.3 1014.4 1007.8 1010.0 1005.6 DAY 6 11 27 12 17 23 6 14 5 4 29 1 MEAN QFF PRESSURE IN HPA 1026.6 1021.7 1020.1 1016.0 1017.1 1011.1 1006.8 1010.8 1016.6 1019.1 1026.9 1023.1 1018.0 MAX. QFF PRESSURE IN HPA 1041.4 1030.8 1034.5 1032.2 1023.8 1023.1 1011.8 1018.6 1023.4 1029.2 1036.3 1035.4 1041.4 DAY 18 27 5 27 24 10 20 28 23 9 19 22 MIN. QFF PRESSURE IN HPA 1011.4 1009.3 1001.9 1006.9 1010.1 1003.5 998.4 1003.8 1009.0 1009.9 1004.8 1010.6 998.4 DAY 6 11 27 12 16 23 6 14 5 4 29 1 PRESSURE AT HOUR 1800 UTC. MEAN QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** 897.6 897.6 900.2 896.0 ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** 902.4 905.5 908.1 903.2 ****** DAY ** ** ** ** ** ** ** ** 23 9 10 22 MIN. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** 892.1 889.9 884.6 886.6 ****** DAY ** ** ** ** ** ** ** ** 5 4 29 1 MEAN QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** 1022.7 1022.6 1025.6 1020.9 ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** 1028.0 1031.5 1034.3 1028.9 ****** DAY ** ** ** ** ** ** ** ** 23 9 10 22 MIN. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** 1016.6 1014.1 1008.2 1010.4 ****** DAY ** ** ** ** ** ** ** ** 5 4 29 1 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** 1017.3 1019.5 1027.2 1023.5 ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** 1025.1 1029.5 1036.0 1034.5 ****** DAY ** ** ** ** ** ** ** ** 23 9 19 22 MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** 1010.7 1008.2 1005.1 1011.3 ****** DAY ** ** ** ** ** ** ** ** 5 4 29 1 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 BOJNURD (40723) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 37 28 N LONGITUDE 57 19 E DATA PROCESSING CENTER ELEVATION 1091.0 M MEANS AND EXTREMES FOR THE YEAR 1980 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AIR TEMPERATURE (C) -0.1 -1.6 6.7 16.6 19.3 23.9 27.5 25.1 20.7 12.9 9.8 4.3 13.8 MINIMUN AIR TEMPERATURE (C) -4.3 -6.4 1.7 8.6 11.2 14.2 16.8 16.4 11.2 5.9 3.8 -1.1 6.5 DAYS WITH MINIMUM TEMP. >=21 0 0 0 0 0 0 2 3 0 0 0 0 5 DAYS WITH MINIMUM TEMP. <=-4 18 17 2 0 0 0 0 0 0 0 0 7 44 DAYS WITH FREEZING MIN.<= 0 27 29 12 1 0 0 0 0 0 2 6 24 101 TEMPERATURE RECORDS LOWEST(C) -16.0 -19.0 -6.0 0.0 6.0 10.0 11.0 8.0 6.0 -1.0 -2.0 -5.0 -19.0 DAY 26 4 5 18 8 2 1 26 24 24 25 16 MAXIMUM AIR TEMPERATURE (C) 4.9 2.8 11.9 23.1 25.5 29.8 34.0 31.9 28.6 19.8 15.6 10.2 19.8 DAYS WITH MAXIMUM TEMP. >=30 0 0 0 0 9 18 30 24 12 3 0 0 96 DAYS WITH MAXIMUM TEMP. <= 0 5 6 0 0 0 0 0 0 0 0 0 0 11 TEMPERATURE RECORDS HIGHEST(C) 14.0 8.0 24.0 29.0 34.0 37.0 37.0 39.0 35.0 33.0 22.0 18.0 39.0 DAY 6 22 30 23 23 7 9 20 6 4 12 5 DIF. BETWEEN (MAX.-MIN.) (C) 9.2 9.2 10.2 14.5 14.3 15.6 17.2 15.5 17.4 13.9 11.8 11.3 13.3 MEAN DAILY TEMP. (MDT) (C) 0.3 -1.8 6.8 15.8 18.3 22.0 25.4 24.1 19.9 12.9 9.7 4.5 13.2 COOLING DEG. DAYS(BASE 21 0C) 0.0 0.0 0.0 0.0 10.0 46.0 137.5 100.5 13.5 2.5 0.0 0.0 310.0 HEATING DEG. DAYS(BASE 18 0C) 549.5 574.0 347.5 75.0 34.0 0.5 0.0 0.0 5.0 175.0 249.0 417.0 2426.5 DEWPOINT (MEAN C) -5.1 -5.2 1.3 6.2 8.7 8.5 8.7 11.1 8.2 4.9 3.6 -1.2 4.1 MIXING RATIO (G/KG) 3.03 3.08 4.84 6.82 8.03 8.23 8.40 9.77 7.97 6.24 5.62 3.99 6.33 VAPOUR PRESSURE (HPA) 4.33 4.41 6.89 9.67 11.39 11.64 11.86 13.79 11.32 8.91 8.04 5.71 9.00 SATURATION DEF. (HPA) 2.12 1.28 3.69 10.29 12.47 19.56 26.48 19.55 14.83 7.36 4.64 3.01 10.44 RELATIVE HUMIDITY (MEAN %) 72 77 71 54 55 43 35 46 49 63 69 71 59 RELATIVE HUMIDITY (MAX. %) 85 87 88 82 80 67 57 68 74 87 91 87 79 RELATIVE HUMIDITY (MIN. %) 58 68 55 34 37 26 20 29 29 41 48 52 41 RELATIVE HUMIDITY (MEAN% 03UTC) 83 85 86 79 79 67 57 67 72 86 88 86 78 RELATIVE HUMIDITY (MEAN% 09UTC) 63 74 64 41 42 33 26 35 37 48 55 57 48 RELATIVE HUMIDITY (MEAN% 15UTC) 71 77 67 45 49 33 26 39 46 58 69 71 54 RH=0 => RELATIVE HUMIDITY < 0.5% AMOUNT OF PRECIPITATION MM. 40.8 93.0 42.8 25.9 6.8 5.0 0.0 0.0 5.3 16.9 42.6 25.6 304.7 DAYS WITH PRECIPITATION >=10 0 3 1 1 0 0 0 0 0 0 1 1 7 DAYS WITH PRECIPITATION >= 5 4 4 4 2 0 1 0 0 0 1 2 1 19 DAYS WITH PRECIPITATION >= 1 9 9 10 5 3 1 0 0 3 5 10 6 61 DAYS WITH PRECIPITATION 10 14 16 6 7 2 0 0 3 9 13 7 87 GREATEST DAILY PRECIPITATION 9.0 39.0 10.0 13.4 3.0 5.0 0.0 0.0 3.0 8.0 21.0 14.0 39.0 DAY 24 12 19 5 10 1 ** ** 10 14 18 19 DAY WITH THUNDER STORM 0 0 2 7 6 0 0 1 0 1 1 0 18 DAYS WITH SNOW OR SLEET 9 13 6 0 0 0 0 0 0 0 0 5 33 DAYS WITH DUST 0 0 0 4 1 0 0 0 1 1 1 0 8 WIND DIRECTION (PREVAILING) 180 270 270 270 315 270 315 270 315 270 270 270 270 PREVAILING WIND SPEED(KNOTS) 10.4 7.3 6.2 7.9 7.3 8.5 8.2 7.3 7.4 7.0 8.5 5.5 7.7 PREVAILING WIND PERCENT 9.7 4.6 11.9 16.1 15.6 20.0 17.2 15.6 14.4 14.0 9.4 7.0 12.1 CALMS PERCENT OF WIND 74.2 86.8 61.6 62.8 51.6 43.3 47.3 59.7 69.4 68.8 76.7 83.9 65.4 NO. OF WIND OBSERVATION 186 174 185 180 186 180 186 186 180 186 180 186 2195 VECTOR WIND DIRECTION (MEAN) 214 291 298 257 282 301 325 300 292 280 230 265 284 VECTOR WIND MAGNITUDE(KNOTS) 1.2 0.3 0.7 1.4 2.2 2.4 2.1 2.1 1.9 1.5 1.2 0.5 1.3 WIND STEADINESES (MEAN %) 60.0 37.5 26.9 48.3 59.5 54.5 48.8 75.0 82.6 75.0 63.2 55.6 52.0 WIND SPEED (MEAN KNOTS) 2.0 0.8 2.6 2.9 3.7 4.4 4.3 2.8 2.3 2.0 1.9 0.9 2.5 FASTEST WIND DIRECTION 180 280 330 220 270 240 310 270 270 290 270 300 270 FASTEST WIND SPEED (KNOTS) 18 15 10 18 17 15 15 15 15 12 30 10 30 DAY 28 18 6 16 16 9 16 3 21 4 10 1 DAYS WITH SKY CLEAR (0-2)/8 9 7 6 7 8 23 30 25 26 9 9 12 171 DAYS WITH P.CLOUDY (3-6)/8 12 11 12 13 16 4 1 6 3 17 12 10 117 DAYS WITH CLOUDY (7-8)/8 10 11 13 10 7 3 0 0 1 5 9 9 78 DAYS WITH VISIBILITY =< 2 KM 6 8 0 1 0 0 0 0 0 2 1 5 23 DURATION OF SUNSHINE HOURS ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION BOJNURD (40723) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 37 28 N LONGITUDE 57 19 E DATA PROCESSING CENTER ELEVATION 1091.0 M MEANS AND EXTREMES FOR THE YEAR 1980 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL MEAN QFE PRESSURE IN HPA 895.7 896.4 894.0 892.2 894.1 892.3 891.5 892.5 895.1 897.0 897.6 896.7 894.6 MAX. QFE PRESSURE IN HPA 903.0 904.2 902.7 901.4 902.9 899.6 899.7 902.7 903.1 902.4 906.2 905.9 906.2 DAY-HOUR 31-18 1- 6 27-18 1-18 16- 6 1- 6 10-12 30- 6 25-18 7- 6 3- 6 17- 6 MIN. QFE PRESSURE IN HPA 886.2 884.8 878.2 882.4 888.6 885.2 886.6 885.7 886.3 888.9 890.4 884.8 878.2 DAY-HOUR 6-12 18-15 19- 6 16- 9 23-12 16-15 2-15 19-15 21-12 4-15 10- 3 12- 3 MEAN QNH PRESSURE IN HPA 1020.5 1021.4 1018.7 1016.7 1018.8 1016.8 1015.9 1017.0 1019.9 1022.1 1022.7 1021.6 1019.3 MAX. QNH PRESSURE IN HPA 1028.7 1030.0 1028.3 1026.9 1028.6 1024.9 1025.0 1028.3 1028.8 1028.0 1032.2 1031.9 1032.2 DAY-HOUR 31-18 1- 6 27-18 1-18 16- 6 1- 6 10-12 30- 6 25-18 7- 6 3- 6 17- 6 MIN. QNH PRESSURE IN HPA 1010.0 1008.4 1001.1 1005.8 1012.7 1008.9 1010.4 1009.4 1010.1 1013.0 1014.7 1008.4 1001.1 DAY-HOUR 6-12 18-15 19- 6 16- 9 23-12 16-15 2-15 19-15 21-12 4-15 10- 3 12- 3 MEAN QFF PRESSURE IN HPA 1025.5 ****** 1020.2 1013.9 1014.7 1010.6 1008.3 1010.4 1015.6 1021.1 1023.1 1024.7 ****** MAX. QFF PRESSURE IN HPA 1035.3 ****** 1030.4 1027.1 1026.1 1021.0 1016.2 1024.1 1024.9 1027.2 1032.0 1036.8 ****** DAY-HOUR 31-15 **-** 15- 6 2- 3 16-15 1- 6 18- 6 30- 6 26- 3 22- 3 3- 6 17- 6 MIN. QFF PRESSURE IN HPA 1009.6 ****** 998.7 1000.9 1005.9 1001.3 1002.8 1002.3 1007.9 1007.0 1011.0 1006.7 ****** DAY-HOUR 6-15 **-** 19- 6 16- 6 23-18 16-15 30-18 19-15 6-15 4-15 10- 3 12- 6 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 895.1 896.1 894.0 892.6 894.6 893.2 892.5 893.3 896.0 897.3 897.7 896.7 894.9 MAX. QFE PRESSURE IN HPA 901.0 903.1 901.7 900.9 902.7 899.3 898.5 899.3 902.7 902.0 905.4 904.4 905.4 DAY 10 1 28 2 16 1 18 31 26 7 3 17 MIN. QFE PRESSURE IN HPA 886.2 887.5 878.8 883.0 890.3 887.9 888.9 888.4 890.4 891.8 890.4 884.8 878.8 DAY 7 12 19 16 10 17 3 20 21 5 10 12 MEAN QNH PRESSURE IN HPA 1019.9 1021.0 1018.6 1017.1 1019.3 1017.8 1017.0 1017.9 1020.9 1022.3 1022.7 1021.6 1019.7 MAX. QNH PRESSURE IN HPA 1026.5 1028.8 1027.2 1026.3 1028.3 1024.6 1023.7 1024.6 1028.3 1027.6 1031.3 1030.2 1031.3 DAY 10 1 28 2 16 1 18 31 26 7 3 17 MIN. QNH PRESSURE IN HPA 1010.0 1011.4 1001.8 1006.4 1014.6 1011.9 1013.0 1012.4 1014.7 1016.2 1014.7 1008.4 1001.8 DAY 7 12 19 16 10 17 3 20 21 5 10 12 MEAN QFF PRESSURE IN HPA 1024.7 1026.7 1020.1 1014.2 1015.1 1011.4 1009.2 1010.9 1016.5 1021.3 1023.1 1024.6 1018.1 MAX. QFF PRESSURE IN HPA 1032.9 1038.6 1029.5 1027.1 1024.9 1020.3 1015.8 1020.8 1024.9 1027.2 1031.9 1035.1 1038.6 DAY 16 3 28 2 16 1 18 31 26 22 3 17 MIN. QFF PRESSURE IN HPA 1010.2 1015.2 999.7 1001.4 1008.7 1004.5 1005.5 1005.1 1010.3 1009.3 1011.0 1007.5 999.7 DAY 7 12 19 16 23 17 3 20 21 5 10 12 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION BOJNURD (40723) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 37 28 N LONGITUDE 57 19 E DATA PROCESSING CENTER ELEVATION 1091.0 M MEANS AND EXTREMES FOR THE YEAR 1980 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 0600 UTC. MEAN QFE PRESSURE IN HPA 896.5 897.2 894.9 893.1 894.8 893.4 892.6 893.7 896.6 898.0 898.6 897.8 895.6 MAX. QFE PRESSURE IN HPA 902.0 904.2 902.1 901.0 902.9 899.6 898.8 902.7 903.1 902.4 906.2 905.9 906.2 DAY 15 1 15 1 16 1 18 30 26 7 3 17 MIN. QFE PRESSURE IN HPA 889.0 889.3 878.2 883.2 890.7 887.3 888.6 887.2 890.1 892.2 892.1 884.9 878.2 DAY 7 12 19 16 23 17 3 20 21 4 10 12 MEAN QNH PRESSURE IN HPA 1021.4 1022.2 1019.7 1017.7 1019.6 1018.0 1017.1 1018.3 1021.6 1023.1 1023.8 1022.9 1020.5 MAX. QNH PRESSURE IN HPA 1027.6 1030.0 1027.7 1026.5 1028.6 1024.9 1024.0 1028.3 1028.8 1028.0 1032.2 1031.9 1032.2 DAY 15 1 15 1 16 1 18 30 26 7 3 17 MIN. QNH PRESSURE IN HPA 1013.1 1013.4 1001.1 1006.7 1015.0 1011.2 1012.7 1011.1 1014.3 1016.7 1016.6 1008.6 1001.1 DAY 7 12 19 16 23 17 3 20 21 4 10 12 MEAN QFF PRESSURE IN HPA 1026.2 1027.8 1021.0 1014.4 1015.1 1011.5 1009.2 1011.3 1016.5 1021.6 1023.7 1025.6 1018.7 MAX. QFF PRESSURE IN HPA 1033.7 1039.0 1030.4 1025.8 1025.6 1021.0 1016.2 1024.1 1024.5 1026.9 1032.0 1036.8 1039.0 DAY 16 3 15 2 16 1 18 30 26 23 3 17 MIN. QFF PRESSURE IN HPA 1014.1 1017.4 998.7 1000.9 1007.5 1004.5 1004.7 1003.9 1009.1 1010.8 1013.2 1006.7 998.7 DAY 6 12 19 16 23 17 3 20 21 4 10 12 PRESSURE AT HOUR 0900 UTC. MEAN QFE PRESSURE IN HPA 895.8 896.7 894.3 892.1 893.9 892.3 891.4 892.6 895.0 896.9 897.4 896.5 894.6 MAX. QFE PRESSURE IN HPA 901.8 903.3 900.6 899.9 902.3 899.1 897.6 902.1 901.3 901.1 905.3 904.5 905.3 DAY 9 2 15 1 16 11 18 30 26 9 3 20 MIN. QFE PRESSURE IN HPA 888.8 888.1 879.1 882.4 889.6 887.0 888.1 886.9 887.8 890.3 891.7 885.0 879.1 DAY 6 25 19 16 23 17 3 20 21 4 9 12 MEAN QNH PRESSURE IN HPA 1020.7 1021.7 1019.1 1016.6 1018.5 1016.8 1015.8 1017.1 1019.7 1021.8 1022.5 1021.5 1019.3 MAX. QNH PRESSURE IN HPA 1027.3 1029.0 1026.0 1025.2 1027.9 1024.3 1022.7 1027.7 1026.8 1026.6 1031.2 1030.3 1031.2 DAY 9 2 15 1 16 11 18 30 26 9 3 20 MIN. QNH PRESSURE IN HPA 1012.9 1012.1 1002.1 1005.8 1013.8 1010.9 1012.1 1010.8 1011.8 1014.6 1016.1 1008.7 1002.1 DAY 6 25 19 16 23 17 3 20 21 4 9 12 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 895.0 895.8 893.3 891.4 893.1 891.2 890.4 891.2 893.8 896.0 896.6 896.0 893.7 MAX. QFE PRESSURE IN HPA 901.8 902.9 899.9 900.3 901.8 897.9 899.7 900.7 899.4 900.5 904.9 903.6 904.9 DAY 9 2 27 1 16 1 10 30 26 9 3 20 MIN. QFE PRESSURE IN HPA 886.2 885.7 880.0 884.7 888.6 886.0 887.1 885.8 886.3 889.1 890.6 885.8 880.0 DAY 6 18 2 26 23 16 2 19 21 4 9 12 MEAN QNH PRESSURE IN HPA 1019.8 1020.7 1017.9 1015.8 1017.6 1015.6 1014.7 1015.6 1018.5 1020.9 1021.6 1020.9 1018.3 MAX. QNH PRESSURE IN HPA 1027.3 1028.6 1025.2 1025.7 1027.3 1023.0 1025.0 1026.1 1024.7 1025.9 1030.8 1029.3 1030.8 DAY 9 2 27 1 16 1 10 30 26 9 3 20 MIN. QNH PRESSURE IN HPA 1010.0 1009.4 1003.1 1008.3 1012.7 1009.8 1011.0 1009.6 1010.1 1013.2 1014.9 1009.6 1003.1 DAY 6 18 2 26 23 16 2 19 21 4 9 12 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** ****** DAY ** ** ** ** ** ** ** ** ** ** ** ** ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION BOJNURD (40723) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 37 28 N LONGITUDE 57 19 E DATA PROCESSING CENTER ELEVATION 1091.0 M MEANS AND EXTREMES FOR THE YEAR 1980 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 1500 UTC. MEAN QFE PRESSURE IN HPA 895.6 896.3 893.7 891.6 893.6 891.1 890.3 891.4 894.1 896.6 897.4 896.2 894.0 MAX. QFE PRESSURE IN HPA 902.9 903.2 901.6 900.7 901.9 897.6 896.4 900.9 900.8 900.9 904.9 903.8 904.9 DAY 31 2 27 1 16 11 11 30 25 9 2 20 MIN. QFE PRESSURE IN HPA 886.2 884.8 879.4 884.2 888.9 885.2 886.6 885.7 889.1 888.9 890.6 886.8 879.4 DAY 6 18 2 26 23 16 2 19 21 4 9 11 MEAN QNH PRESSURE IN HPA 1020.5 1021.2 1018.4 1016.0 1018.2 1015.5 1014.5 1015.7 1018.8 1021.6 1022.5 1021.2 1018.7 MAX. QNH PRESSURE IN HPA 1028.6 1028.9 1027.1 1026.1 1027.5 1022.7 1021.3 1026.3 1026.2 1026.3 1030.8 1029.6 1030.8 DAY 31 2 27 1 16 11 11 30 25 9 2 20 MIN. QNH PRESSURE IN HPA 1010.0 1008.4 1002.4 1007.8 1013.0 1008.9 1010.4 1009.4 1013.2 1013.0 1014.9 1010.7 1002.4 DAY 6 18 2 26 23 16 2 19 21 4 9 11 MEAN QFF PRESSURE IN HPA 1025.3 1026.8 1019.7 1013.0 1013.9 1009.1 1006.8 1008.8 1014.3 1020.5 1022.8 1024.1 1017.1 MAX. QFF PRESSURE IN HPA 1035.3 1038.3 1028.3 1025.2 1026.1 1018.3 1013.8 1021.7 1023.1 1026.6 1031.2 1033.4 1038.3 DAY 31 2 27 1 16 11 11 30 25 21 3 16 MIN. QFF PRESSURE IN HPA 1009.6 1010.8 1003.3 1002.8 1006.0 1001.3 1003.1 1002.3 1007.9 1007.0 1012.8 1011.3 1001.3 DAY 6 18 2 26 23 16 29 19 6 4 9 12 PRESSURE AT HOUR 1800 UTC. MEAN QFE PRESSURE IN HPA 896.2 896.5 894.0 892.6 894.7 892.5 891.7 892.9 895.4 897.6 897.9 896.8 894.9 MAX. QFE PRESSURE IN HPA 903.0 903.0 902.7 901.4 901.9 898.7 897.6 901.0 903.1 901.9 905.9 904.0 905.9 DAY 31 2 27 1 16 11 11 30 25 9 2 20 MIN. QFE PRESSURE IN HPA 887.5 887.4 879.4 886.0 889.8 886.4 888.0 886.7 889.8 892.0 890.8 886.4 879.4 DAY 6 18 2 26 23 16 30 19 13 4 9 11 MEAN QNH PRESSURE IN HPA 1021.1 1021.4 1018.7 1017.2 1019.4 1017.0 1016.1 1017.5 1020.3 1022.6 1023.0 1021.7 1019.7 MAX. QNH PRESSURE IN HPA 1028.7 1028.7 1028.3 1026.9 1027.5 1023.9 1022.7 1026.5 1028.8 1027.5 1031.9 1029.8 1031.9 DAY 31 2 27 1 16 11 11 30 25 9 2 20 MIN. QNH PRESSURE IN HPA 1011.4 1011.3 1002.4 1009.8 1014.0 1010.2 1012.0 1010.6 1014.0 1016.4 1015.1 1010.2 1002.4 DAY 6 18 2 26 23 16 30 19 13 4 9 11 MEAN QFF PRESSURE IN HPA 1025.9 1027.0 1019.9 1013.9 1014.9 1010.4 1008.1 1010.5 1015.2 1021.1 1023.0 1024.4 1017.9 MAX. QFF PRESSURE IN HPA 1035.2 1038.1 1029.6 1026.6 1026.0 1020.2 1014.8 1022.4 1024.1 1026.7 1031.1 1034.2 1038.1 DAY 31 2 27 1 16 11 11 30 25 21 2 16 MIN. QFF PRESSURE IN HPA 1010.8 1014.3 1003.1 1004.3 1005.9 1003.1 1002.8 1003.5 1009.7 1009.5 1011.4 1010.6 1002.8 DAY 6 18 2 26 23 16 30 19 13 4 9 11 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 BOJNURD (40723) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 37 28 N LONGITUDE 57 19 E DATA PROCESSING CENTER ELEVATION 1091.0 M MEANS AND EXTREMES FOR THE YEAR 1981 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AIR TEMPERATURE (C) 4.1 4.5 9.3 12.6 17.6 22.3 26.1 25.7 19.8 12.4 8.1 3.1 13.8 MINIMUN AIR TEMPERATURE (C) -1.3 -1.3 2.3 6.1 11.1 14.0 18.3 16.8 11.6 6.0 1.6 -1.4 7.0 DAYS WITH MINIMUM TEMP. >=21 0 0 0 0 0 0 7 3 0 0 0 0 10 DAYS WITH MINIMUM TEMP. <=-4 10 10 2 1 0 0 0 0 0 0 0 8 31 DAYS WITH FREEZING MIN.<= 0 21 21 11 4 0 0 0 0 0 1 15 26 99 TEMPERATURE RECORDS LOWEST(C) -6.0 -7.0 -5.0 -7.0 4.0 9.0 14.0 13.0 4.0 -1.0 -3.0 -8.0 -8.0 DAY 15 3 1 3 4 2 29 7 24 31 9 31 MAXIMUM AIR TEMPERATURE (C) 9.7 9.9 15.6 18.4 23.4 27.9 31.9 32.7 29.6 21.2 17.5 10.7 20.7 DAYS WITH MAXIMUM TEMP. >=30 0 0 0 0 2 9 25 30 18 0 0 0 84 DAYS WITH MAXIMUM TEMP. <= 0 0 0 0 1 0 0 0 0 0 0 0 1 2 TEMPERATURE RECORDS HIGHEST(C) 14.0 16.0 24.0 29.0 32.0 35.0 39.0 35.0 37.0 26.0 26.0 17.0 39.0 DAY 10 8 21 25 15 16 12 7 14 3 13 17 DIF. BETWEEN (MAX.-MIN.) (C) 11.0 11.2 13.3 12.3 12.3 13.9 13.6 15.9 18.0 15.2 15.9 12.1 13.7 MEAN DAILY TEMP. (MDT) (C) 4.2 4.3 9.0 12.3 17.2 21.0 25.1 24.8 20.6 13.6 9.6 4.7 13.9 COOLING DEG. DAYS(BASE 21 0C) 0.0 0.0 0.0 0.0 3.5 39.5 130.5 116.5 38.0 0.0 0.0 0.0 328.0 HEATING DEG. DAYS(BASE 18 0C) 428.0 383.0 280.0 174.5 51.0 10.0 0.0 0.0 16.5 137.5 253.0 413.0 2146.5 DEWPOINT (MEAN C) -2.8 -2.6 2.6 5.6 9.8 9.3 13.6 10.5 7.3 4.8 -0.5 -1.8 4.6 MIXING RATIO (G/KG) 3.55 3.62 5.34 6.72 8.69 8.53 11.30 9.29 7.53 6.23 4.21 3.83 6.57 VAPOUR PRESSURE (HPA) 5.08 5.17 7.59 9.53 12.31 12.07 15.89 13.13 10.71 8.91 6.03 5.49 9.33 SATURATION DEF. (HPA) 3.45 3.82 4.99 6.42 8.84 16.03 19.27 21.23 14.38 6.39 5.70 2.61 9.43 RELATIVE HUMIDITY (MEAN %) 65 64 67 66 64 47 50 42 49 65 60 74 59 RELATIVE HUMIDITY (MAX. %) 84 83 88 87 86 70 75 69 74 88 82 91 81 RELATIVE HUMIDITY (MIN. %) 46 46 47 48 44 32 33 25 25 36 35 49 39 RELATIVE HUMIDITY (MEAN% 03UTC) 81 80 85 84 84 70 75 69 71 85 77 85 79 RELATIVE HUMIDITY (MEAN% 09UTC) 53 52 53 54 52 38 39 31 30 44 42 58 46 RELATIVE HUMIDITY (MEAN% 15UTC) 62 62 62 62 58 39 43 33 39 59 54 72 54 RH=0 => RELATIVE HUMIDITY < 0.5% AMOUNT OF PRECIPITATION MM. 16.8 18.9 39.0 68.5 84.8 10.1 66.4 1.2 15.3 24.5 17.1 9.8 372.4 DAYS WITH PRECIPITATION >=10 0 0 1 3 3 0 2 0 1 0 1 0 11 DAYS WITH PRECIPITATION >= 5 1 1 3 3 5 0 4 0 1 2 2 0 22 DAYS WITH PRECIPITATION >= 1 7 8 9 10 10 3 6 1 1 7 3 7 72 DAYS WITH PRECIPITATION 8 11 12 17 15 4 7 1 4 9 3 9 100 GREATEST DAILY PRECIPITATION 5.0 9.0 11.0 19.0 29.1 4.0 37.1 1.2 15.0 8.0 10.0 3.0 37.1 DAY 2 22 24 2 7 5 20 11 22 9 23 26 DAY WITH THUNDER STORM 0 1 0 2 6 4 3 0 2 1 1 0 20 DAYS WITH SNOW OR SLEET 2 8 2 2 0 0 0 0 0 0 1 1 16 DAYS WITH DUST 0 0 0 1 1 0 0 0 1 0 0 0 3 WIND DIRECTION (PREVAILING) 180 270 270 270 270 270 270 270 270 270 270 135 270 PREVAILING WIND SPEED(KNOTS) 10.6 6.7 7.5 6.5 7.2 7.9 8.1 6.9 6.4 6.3 6.6 9.9 7.2 PREVAILING WIND PERCENT 20.4 15.5 14.0 15.0 18.8 20.6 24.7 7.3 11.3 6.9 7.5 4.0 12.1 CALMS PERCENT OF WIND 59.1 68.5 67.7 62.8 64.5 66.1 53.2 78.0 77.5 88.7 79.2 85.9 72.2 NO. OF WIND OBSERVATION 186 168 186 180 186 180 186 191 240 248 240 248 2439 VECTOR WIND DIRECTION (MEAN) 184 243 235 235 246 263 275 284 261 263 206 186 244 VECTOR WIND MAGNITUDE(KNOTS) 2.3 1.4 1.2 1.0 1.7 2.2 2.5 0.9 1.0 0.7 0.6 0.4 1.1 WIND STEADINESES (MEAN %) 65.7 58.3 50.0 35.7 60.7 88.0 75.8 64.3 71.4 100.0 40.0 36.4 50.0 WIND SPEED (MEAN KNOTS) 3.5 2.4 2.4 2.8 2.8 2.5 3.3 1.4 1.4 0.7 1.5 1.1 2.2 FASTEST WIND DIRECTION 180 180 270 180 150 260 270 270 280 300 140 330 150 FASTEST WIND SPEED (KNOTS) 15 20 18 20 25 15 15 12 12 10 20 15 25 DAY 11 9 3 8 1 13 2 17 15 6 13 10 DAYS WITH SKY CLEAR (0-2)/8 15 7 5 7 9 17 18 28 28 18 15 9 176 DAYS WITH P.CLOUDY (3-6)/8 10 7 13 9 14 10 11 3 1 8 11 13 110 DAYS WITH CLOUDY (7-8)/8 6 14 13 14 8 3 2 0 1 5 4 9 79 DAYS WITH VISIBILITY =< 2 KM 1 2 1 2 1 0 0 0 0 0 1 7 15 DURATION OF SUNSHINE HOURS ****** ****** ****** ****** ****** 278.7 323.7 336.0 290.9 230.4 167.7 138.4 ****** ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION BOJNURD (40723) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 37 28 N LONGITUDE 57 19 E DATA PROCESSING CENTER ELEVATION 1091.0 M MEANS AND EXTREMES FOR THE YEAR 1981 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL MEAN QFE PRESSURE IN HPA 895.7 894.5 892.7 893.3 893.8 893.3 891.5 893.0 897.4 900.1 896.8 897.0 894.9 MAX. QFE PRESSURE IN HPA 906.4 901.0 904.6 901.5 904.2 900.5 897.5 898.2 904.3 908.0 905.3 905.3 908.0 DAY-HOUR 9- 6 28- 6 8- 6 10- 6 21-18 10- 3 29-18 24- 3 27- 6 29- 6 16- 6 1-18 MIN. QFE PRESSURE IN HPA 884.4 884.0 879.7 880.7 882.4 885.3 882.7 887.3 890.5 892.7 887.4 888.2 879.7 DAY-HOUR 3-12 1- 3 13- 3 30-18 1- 3 16-12 6- 6 13-12 12-12 16-12 5-15 18-21 MEAN QNH PRESSURE IN HPA 1020.6 1019.2 1017.2 1017.9 1018.5 1017.9 1015.9 1017.6 1022.4 1025.4 1021.7 1022.0 1019.7 MAX. QNH PRESSURE IN HPA 1032.5 1026.5 1030.5 1027.0 1030.0 1025.9 1022.6 1023.3 1030.1 1034.2 1031.2 1031.2 1034.2 DAY-HOUR 9- 6 28- 6 8- 6 10- 6 21-18 10- 3 29-18 24- 3 27- 6 29- 6 16- 6 1-18 MIN. QNH PRESSURE IN HPA 1008.0 1007.6 1002.8 1003.9 1005.8 1009.0 1006.1 1011.2 1014.8 1017.2 1011.3 1012.2 1002.8 DAY-HOUR 3-12 1- 3 13- 3 30-18 1- 3 16-12 6- 6 13-12 12-12 16-12 5-15 18-21 MEAN QFF PRESSURE IN HPA 1023.7 ****** 1017.9 1016.7 1015.0 1012.4 1008.6 1010.7 1016.8 1023.4 1021.7 1024.4 ****** MAX. QFF PRESSURE IN HPA 1036.8 ****** 1032.0 1028.4 1027.4 1020.7 1015.7 1017.5 1027.2 1034.0 1033.1 1034.3 ****** DAY-HOUR 9- 6 **-** 5- 6 3- 3 21-18 10- 3 30- 3 24- 3 23-18 29- 6 16- 3 12- 6 MIN. QFF PRESSURE IN HPA 1011.6 ****** 1000.3 999.7 1000.2 1002.2 997.9 1003.5 1006.5 1013.1 1007.0 1010.1 ****** DAY-HOUR 3-15 **-** 13- 3 30-18 1- 3 4-15 6- 6 13-15 19-12 16-12 13-12 19- 0 PRESSURE AT HOUR 0000 UTC. MEAN QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** 897.4 900.0 896.8 897.0 ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** 902.7 906.3 904.6 903.8 ****** DAY ** ** ** ** ** ** ** ** 27 29 16 2 MIN. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** 892.9 894.6 890.4 888.7 ****** DAY ** ** ** ** ** ** ** ** 12 16 4 19 MEAN QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** 1022.5 1025.3 1021.8 1022.0 ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** 1028.3 1032.3 1030.5 1029.6 ****** DAY ** ** ** ** ** ** ** ** 27 29 16 2 MIN. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** 1017.4 1019.3 1014.7 1012.8 ****** DAY ** ** ** ** ** ** ** ** 12 16 4 19 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** 1016.4 1022.6 1020.9 1023.7 ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** 1025.2 1031.2 1031.4 1031.3 ****** DAY ** ** ** ** ** ** ** ** 24 29 16 2 MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** 1009.0 1014.6 1011.3 1010.1 ****** DAY ** ** ** ** ** ** ** ** 17 13 6 19 PRESSURE AT HOUR 0300 UTC. MEAN QFE PRESSURE IN HPA 895.7 894.2 893.0 893.8 894.0 894.2 892.4 894.1 898.0 900.4 897.3 897.3 895.4 MAX. QFE PRESSURE IN HPA 905.5 899.9 903.1 900.9 902.5 900.5 896.9 898.2 903.4 906.5 904.9 903.7 906.5 DAY 9 28 8 10 21 10 24 24 27 29 16 2 MIN. QFE PRESSURE IN HPA 886.7 884.0 879.7 883.4 882.4 887.1 888.6 890.2 892.8 894.4 891.3 889.3 879.7 DAY 3 1 13 30 1 5 2 13 17 15 13 19 MEAN QNH PRESSURE IN HPA 1020.6 1018.9 1017.5 1018.5 1018.7 1018.9 1016.9 1018.7 1023.2 1025.8 1022.3 1022.3 1020.2 MAX. QNH PRESSURE IN HPA 1031.5 1025.2 1028.8 1026.3 1028.1 1025.9 1021.9 1023.3 1029.1 1032.6 1030.8 1029.5 1032.6 DAY 9 28 8 10 21 10 24 24 27 29 16 2 MIN. QNH PRESSURE IN HPA 1010.6 1007.6 1002.8 1006.9 1005.8 1011.0 1012.7 1014.4 1017.3 1019.1 1015.7 1013.4 1002.8 DAY 3 1 13 30 1 5 2 13 17 15 13 19 MEAN QFF PRESSURE IN HPA 1023.5 1021.6 1018.0 1017.3 1014.9 1013.3 1009.4 1011.7 1018.5 1024.7 1023.2 1025.4 1018.5 MAX. QFF PRESSURE IN HPA 1035.9 1030.1 1031.2 1028.4 1024.5 1020.7 1015.7 1017.5 1027.0 1032.7 1033.1 1032.9 1035.9 DAY 9 24 5 3 22 10 30 24 23 29 16 2 MIN. QFF PRESSURE IN HPA 1013.2 1008.8 1000.3 1005.3 1000.2 1004.0 1003.7 1006.1 1010.3 1016.6 1012.6 1011.4 1000.2 DAY 19 1 13 30 1 16 2 14 17 15 13 19 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION BOJNURD (40723) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 37 28 N LONGITUDE 57 19 E DATA PROCESSING CENTER ELEVATION 1091.0 M MEANS AND EXTREMES FOR THE YEAR 1981 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 0600 UTC. MEAN QFE PRESSURE IN HPA 896.9 895.4 893.8 894.3 894.4 894.1 892.2 894.2 898.5 901.3 898.0 898.2 895.9 MAX. QFE PRESSURE IN HPA 906.4 901.0 904.6 901.5 903.8 900.1 897.2 897.6 904.3 908.0 905.3 905.2 908.0 DAY 9 28 8 10 21 10 30 3 27 29 16 1 MIN. QFE PRESSURE IN HPA 886.9 886.1 881.0 884.4 883.4 887.1 882.7 890.7 893.5 895.3 891.0 891.6 881.0 DAY 3 1 13 30 1 5 6 13 17 16 13 19 MEAN QNH PRESSURE IN HPA 1021.9 1020.2 1018.4 1019.0 1019.1 1018.8 1016.7 1018.9 1023.7 1026.8 1023.1 1023.3 1020.8 MAX. QNH PRESSURE IN HPA 1032.5 1026.5 1030.5 1027.0 1029.6 1025.5 1022.2 1022.7 1030.1 1034.2 1031.2 1031.1 1034.2 DAY 9 28 8 10 21 10 30 3 27 29 16 1 MIN. QNH PRESSURE IN HPA 1010.8 1009.9 1004.2 1008.0 1006.9 1011.0 1006.1 1015.0 1018.1 1020.1 1015.3 1016.0 1004.2 DAY 3 1 13 30 1 5 6 13 17 16 13 19 MEAN QFF PRESSURE IN HPA 1024.8 1022.8 1018.6 1017.6 1015.2 1012.9 1008.8 1011.4 1018.0 1025.0 1023.6 1026.3 1018.7 MAX. QFF PRESSURE IN HPA 1036.8 1031.0 1032.0 1027.6 1027.2 1020.4 1015.1 1015.3 1025.7 1034.0 1033.1 1034.3 1036.8 DAY 9 24 5 3 21 9 30 3 24 29 16 12 MIN. QFF PRESSURE IN HPA 1013.4 1011.2 1001.8 1005.3 1002.2 1003.7 997.9 1007.0 1010.5 1017.4 1012.4 1014.3 997.9 DAY 12 1 13 30 1 16 6 14 17 16 13 19 PRESSURE AT HOUR 0900 UTC. MEAN QFE PRESSURE IN HPA 895.8 894.6 892.6 893.4 893.6 893.2 891.5 893.0 897.2 900.2 896.6 896.9 894.9 MAX. QFE PRESSURE IN HPA 904.8 900.8 903.7 900.9 903.7 899.5 896.1 896.7 903.8 906.7 903.3 905.1 906.7 DAY 29 28 8 10 21 9 30 3 27 29 16 1 MIN. QFE PRESSURE IN HPA 885.2 885.7 881.4 882.5 883.1 886.1 886.9 889.3 892.1 893.9 889.4 890.4 881.4 DAY 3 1 13 30 1 16 1 13 12 16 5 18 MEAN QNH PRESSURE IN HPA 1020.6 1019.3 1017.1 1018.0 1018.2 1017.8 1015.9 1017.6 1022.3 1025.5 1021.5 1021.9 1019.7 MAX. QNH PRESSURE IN HPA 1030.7 1026.2 1029.5 1026.3 1029.5 1024.8 1021.0 1021.7 1029.6 1032.8 1029.0 1031.0 1032.8 DAY 29 28 8 10 21 9 30 3 27 29 16 1 MIN. QNH PRESSURE IN HPA 1008.9 1009.4 1004.7 1005.9 1006.6 1009.9 1010.8 1013.4 1016.6 1018.6 1013.6 1014.7 1004.7 DAY 3 1 13 30 1 16 1 13 12 16 5 18 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** 1015.8 1022.8 1020.9 1023.7 ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** 1024.2 1031.8 1029.5 1031.9 ****** DAY ** ** ** ** ** ** ** ** 27 29 16 1 MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** 1008.3 1013.8 1008.6 1014.7 ****** DAY ** ** ** ** ** ** ** ** 17 16 13 18 PRESSURE AT HOUR 1200 UTC. MEAN QFE PRESSURE IN HPA 894.9 893.6 891.5 892.3 893.0 892.2 890.5 891.7 896.2 899.3 895.6 896.2 893.9 MAX. QFE PRESSURE IN HPA 903.7 899.4 901.9 899.9 903.3 898.8 895.7 896.0 902.5 905.6 902.3 904.7 905.6 DAY 29 28 8 19 21 10 23 3 27 29 15 1 MIN. QFE PRESSURE IN HPA 884.4 885.2 880.2 881.3 883.1 885.3 885.6 887.3 890.5 892.7 888.0 888.6 880.2 DAY 3 1 13 30 1 16 1 13 12 16 5 18 MEAN QNH PRESSURE IN HPA 1019.6 1018.3 1015.9 1016.8 1017.6 1016.7 1014.8 1016.1 1021.1 1024.5 1020.5 1021.1 1018.6 MAX. QNH PRESSURE IN HPA 1029.5 1024.7 1027.5 1025.2 1029.0 1024.0 1020.6 1020.9 1028.1 1031.6 1027.9 1030.6 1031.6 DAY 29 28 8 19 21 10 23 3 27 29 15 1 MIN. QNH PRESSURE IN HPA 1008.0 1008.9 1003.3 1004.5 1006.6 1009.0 1009.3 1011.2 1014.8 1017.2 1012.0 1012.7 1003.3 DAY 3 1 13 30 1 16 1 13 12 16 5 18 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** 1015.1 1021.8 1019.7 1022.7 ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** 1025.1 1030.9 1028.0 1030.8 ****** DAY ** ** ** ** ** ** ** ** 23 28 15 1 MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** 1006.5 1013.1 1007.0 1012.4 ****** DAY ** ** ** ** ** ** ** ** 19 16 13 18 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION BOJNURD (40723) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 37 28 N LONGITUDE 57 19 E DATA PROCESSING CENTER ELEVATION 1091.0 M MEANS AND EXTREMES FOR THE YEAR 1981 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL PRESSURE AT HOUR 1500 UTC. MEAN QFE PRESSURE IN HPA 895.3 894.2 892.3 892.6 893.5 892.5 890.6 891.8 896.5 899.5 896.3 896.6 894.3 MAX. QFE PRESSURE IN HPA 904.2 900.0 902.2 900.2 903.5 898.8 895.7 896.0 902.2 905.7 903.4 905.0 905.7 DAY 8 27 8 19 21 10 29 3 27 28 15 1 MIN. QFE PRESSURE IN HPA 885.3 886.7 881.2 880.9 884.0 885.8 885.2 887.5 890.8 892.8 887.4 889.1 880.9 DAY 3 1 13 30 1 4 1 13 12 16 5 18 MEAN QNH PRESSURE IN HPA 1020.1 1018.9 1016.7 1017.1 1018.1 1017.0 1014.9 1016.3 1021.4 1024.8 1021.2 1021.6 1019.0 MAX. QNH PRESSURE IN HPA 1030.0 1025.3 1027.8 1025.6 1029.2 1024.0 1020.6 1020.9 1027.8 1031.7 1029.1 1030.9 1031.7 DAY 8 27 8 19 21 10 29 3 27 28 15 1 MIN. QNH PRESSURE IN HPA 1009.0 1010.6 1004.4 1004.1 1007.6 1009.6 1008.9 1011.4 1015.1 1017.3 1011.3 1013.2 1004.1 DAY 3 1 13 30 1 4 1 13 12 16 5 18 MEAN QFF PRESSURE IN HPA 1023.0 1021.6 1017.1 1015.7 1014.3 1011.3 1007.4 1009.3 1016.8 1023.6 1022.1 1024.6 1017.2 MAX. QFF PRESSURE IN HPA 1034.3 1029.8 1029.2 1025.4 1027.0 1019.2 1014.4 1014.5 1025.9 1032.4 1030.7 1032.5 1034.3 DAY 8 27 8 2 21 9 23 3 23 28 25 1 MIN. QFF PRESSURE IN HPA 1011.6 1008.4 1001.5 1000.0 1002.3 1002.2 1000.6 1003.5 1009.0 1014.7 1007.8 1013.8 1000.0 DAY 3 9 13 30 1 4 1 13 16 16 5 18 PRESSURE AT HOUR 1800 UTC. MEAN QFE PRESSURE IN HPA 895.9 894.8 893.1 893.4 894.6 893.7 892.0 893.2 897.7 900.2 896.8 897.1 895.2 MAX. QFE PRESSURE IN HPA 904.9 900.7 902.6 901.0 904.2 899.6 897.5 897.8 903.0 906.8 904.4 905.3 906.8 DAY 8 27 8 19 21 9 29 3 23 28 15 1 MIN. QFE PRESSURE IN HPA 885.9 887.4 881.8 880.7 887.1 887.2 886.3 889.2 892.6 894.0 888.2 889.2 880.7 DAY 3 1 12 30 12 4 1 13 12 16 5 18 MEAN QNH PRESSURE IN HPA 1020.8 1019.6 1017.6 1018.0 1019.4 1018.3 1016.5 1017.8 1022.8 1025.5 1021.8 1022.2 1020.0 MAX. QNH PRESSURE IN HPA 1030.8 1026.1 1028.2 1026.5 1030.0 1024.9 1022.6 1022.9 1028.7 1032.9 1030.2 1031.2 1032.9 DAY 8 27 8 19 21 9 29 3 23 28 15 1 MIN. QNH PRESSURE IN HPA 1009.7 1011.3 1005.1 1003.9 1011.0 1011.1 1010.1 1013.3 1017.1 1018.7 1012.2 1013.3 1003.9 DAY 3 1 12 30 12 4 1 13 12 16 5 18 MEAN QFF PRESSURE IN HPA 1023.6 1022.1 1017.8 1016.4 1015.5 1012.3 1008.6 1010.3 1017.4 1023.8 1022.3 1025.2 1017.9 MAX. QFF PRESSURE IN HPA 1034.9 1030.4 1029.7 1026.1 1027.4 1019.7 1015.5 1015.4 1027.2 1032.3 1031.4 1033.4 1034.9 DAY 8 28 8 2 21 10 23 31 23 28 15 1 MIN. QFF PRESSURE IN HPA 1012.1 1013.5 1003.3 999.7 1004.7 1004.0 1001.2 1005.2 1009.9 1015.0 1007.9 1013.8 999.7 DAY 3 9 12 30 15 4 1 13 12 16 5 18 PRESSURE AT HOUR 2100 UTC. MEAN QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** 897.6 900.1 896.9 896.8 ****** MAX. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** 902.4 906.6 904.6 904.5 ****** DAY ** ** ** ** ** ** ** ** 27 28 15 1 MIN. QFE PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** 892.9 894.6 890.0 888.2 ****** DAY ** ** ** ** ** ** ** ** 16 15 5 18 MEAN QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** 1022.7 1025.4 1021.9 1021.8 ****** MAX. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** 1028.0 1032.7 1030.5 1030.3 ****** DAY ** ** ** ** ** ** ** ** 27 28 15 1 MIN. QNH PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** 1017.4 1019.3 1014.2 1012.2 ****** DAY ** ** ** ** ** ** ** ** 16 15 5 18 MEAN QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** 1016.5 1022.8 1021.2 1023.8 ****** MAX. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** 1025.5 1031.7 1030.4 1032.5 ****** DAY ** ** ** ** ** ** ** ** 23 28 15 1 MIN. QFF PRESSURE IN HPA ****** ****** ****** ****** ****** ****** ****** ****** 1009.3 1014.8 1009.7 1010.2 ****** DAY ** ** ** ** ** ** ** ** 12 16 5 18 ======================================================================================================================= TEHRAN 2006,MAY M.(S & A) STATION BOJNURD (40723) I.R OF IRAN METEOROLOGICAL ORGANIZATION (IRIMO) LATITUDE 37 28 N LONGITUDE 57 19 E DATA PROCESSING CENTER ELEVATION 1091.0 M MEANS AND EXTREMES FOR THE YEAR 1982 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEP. OCT. NOV. DEC. ANNUAL AIR TEMPERATURE (C) -0.7 -1.8 4.5 15.9 18.5 23.4 25.9 24.6 20.4 13.0 5.2 0.9 12.5 MINIMUN AIR TEMPERATURE (C) -5.2 -5.2 -0.4 8.0 11.9 15.9 17.5 15.8 11.1 6.9 0.9 -4.6 6.0 DAYS WITH MINIMUM TEMP. >=21 0 0 0 0 0 0 4 3 0 0 0 0 7 DAYS WITH MINIMUM TEMP. <=-4 16 17 2 0 0 0 0 0 0 0 1 20 56 DAYS WITH FREEZING MIN.<= 0 26 24 22 0 0 0 0 0 0 3 11 27 113 TEMPERATURE RECORDS LOWEST(C) -17.0 -15.8 -4.5 0.8 5.5 12.0 12.2 9.8 5.8 -3.6 -4.6 -12.4 -17.0 DAY 23 8 1 4 11 1 1 31 23 26 18 10 MAXIMUM AIR TEMPERATURE (C) 6.2 4.3 11.6 25.2 26.5 30.5 33.1 31.3 27.3 19.4 10.4 7.2 19.4 DAYS WITH MAXIMUM TEMP. >=30 0 0 0 4 9 17 25 21 8 0 0 0 84 DAYS WITH MAXIMUM TEMP. <= 0 5 3 0 0 0 0 0 0 0 0 0 1 9 TEMPERATURE RECORDS HIGHEST(C) 14.8 11.6 21.2 32.0 35.2 38.0 37.0 38.2 31.6 26.8 19.6 14.6 38.2 DAY 7 4 24 19 19 8 6 4 8 5 8 23 DIF. BETWEEN (MAX.-MIN.) (C) 11.4 9.5 12.0 17.2 14.6 14.6 15.6 15.5 16.2 12.5 9.5 11.8 13.4 MEAN DAILY TEMP. (MDT) (C) 0.5 -0.5 5.6 16.6 19.2 23.2 25.3 23.6 19.2 13.1 5.6 1.3 12.7 COOLING DEG. DAYS(BASE 21 0C) 0.0 0.0 0.0 0.6 16.5 75.1 136.3 80.7 2.5 0.0 0.0 0.0 311.8 HEATING DEG. DAYS(BASE 18 0C) 543.2 496.4 384.6 62.9 19.5 0.0 0.0 0.0 8.7 153.2 371.1 518.4 2558.0 DEWPOINT (MEAN C) -5.4 -6.6 -1.2 4.8 9.0 10.8 10.7 9.3 5.5 5.6 0.6 -4.5 3.2 MIXING RATIO (G/KG) 3.05 2.76 3.98 6.28 8.35 9.32 9.58 8.86 6.62 6.67 4.49 3.15 6.09 VAPOUR PRESSURE (HPA) 4.37 3.95 5.69 8.94 11.87 13.19 13.48 12.50 9.44 9.52 6.44 4.52 8.66 SATURATION DEF. (HPA) 2.38 1.53 3.09 10.15 10.29 17.16 21.40 19.98 15.29 6.36 2.82 2.37 9.40 RELATIVE HUMIDITY (MEAN %) 70 74 73 54 60 49 43 42 43 65 75 71 60 RELATIVE HUMIDITY (MAX. %) 84 86 86 75 78 71 66 65 68 85 90 88 79 RELATIVE HUMIDITY (MIN. %) 53 59 61 33 39 30 27 28 27 46 59 49 43 RELATIVE HUMIDITY (MEAN% 03UTC) 80 79 87 73 76 69 66 67 63 84 88 87 77 RELATIVE HUMIDITY (MEAN% 09UTC) 59 66 *** 35 43 34 32 32 31 50 60 53 *** RELATIVE HUMIDITY (MEAN% 15UTC) 68 *** *** 40 50 39 34 35 38 64 77 72 *** RH=0 => RELATIVE HUMIDITY < 0.5% AMOUNT OF PRECIPITATION MM. 41.1 46.3 28.0 3.5 27.9 16.4 13.0 0.1 12.3 26.2 26.9 9.7 251.4 DAYS WITH PRECIPITATION >=10 2 2 0 0 1 1 1 0 0 0 0 0 7 DAYS WITH PRECIPITATION >= 5 2 4 4 0 2 1 1 0 1 3 2 0 20 DAYS WITH PRECIPITATION >= 1 9 9 6 1 5 3 1 0 4 5 8 3 54 DAYS WITH PRECIPITATION 12 14 12 4 15 5 1 1 7 13 15 6 105 GREATEST DAILY PRECIPITATION 15.0 11.0 7.0 2.1 10.0 11.0 13.0 0.1 8.0 8.0 7.3 4.0 15.0 DAY 29 1 25 20 23