Station Name: ROI ET WMO Station Number: 48405 National I.D. Number: Country: THAILAND WMO Region: REGION II - ASIA Latitude: 16d 03m N Longitude: 103d 41m E Elevation: 142 m In the following tables, byr = beginning year of normals or extremes data period eyr = ending year of normals or extremes data period NA = Not Applicable, data not submitted or not computed * = value > 0 but < units resolution Ann-NCDC = annual value computed by NCDC from monthly values provided by Members ========================================================== The normals data and climate variable descriptions are presented in these tables as provided by the WMO Member country. ========================================================== Element 01: Dry Bulb Temperature (deg C) MEAN (Statistic 01): Mean Value MAX_VAL (Statistic 04): Maximum Value MIN_VAL (Statistic 05): Minimum Value MNDLYMX (Statistic 09): Mean Daily Maximum Value MNDLYMI (Statistic 10): Mean Daily Minimum Value -------------------------------------------------- byr: 1961 1961 1961 1961 1961 eyr: 1990 1990 1990 1990 1990 Statistic: MEAN MAX_VAL MIN_VAL MNDLYMX MNDLYMI Month -------------------------------------------------- Jan 23.1 36.4 6.3 30.0 16.5 Feb 25.5 38.7 9.8 32.2 19.3 Mar 28.2 40.0 10.9 34.5 22.2 Apr 29.6 41.2 15.0 35.5 24.3 May 28.9 40.2 19.3 33.9 24.8 Jun 28.4 39.3 20.0 32.6 24.9 Jul 28.1 37.1 21.2 32.0 24.7 Aug 27.7 36.2 21.4 31.3 24.5 Sep 27.3 35.0 20.0 30.9 24.2 Oct 26.7 34.3 15.9 30.8 22.8 Nov 24.7 34.3 11.4 30.0 19.7 Dec 22.8 35.8 7.0 29.2 16.8 Annual 26.8 41.2 6.3 31.9 22.1 Ann-NCDC 26.8 NA NA 31.9 22.1 -------------------------------------------------- Element 05: Dew Point Temperature (deg C) MEAN (Statistic 01): Mean Value ------------------ byr: 1961 eyr: 1990 Month ------------------ Jan 15.3 Feb 17.1 Mar 19.0 Apr 21.5 May 23.4 Jun 23.8 Jul 23.6 Aug 23.7 Sep 23.7 Oct 21.9 Nov 18.7 Dec 15.7 Annual 20.6 Ann-NCDC 20.6 ------------------ Element 06: Precipitation (mm) MEANMLY (Statistic 15): Mean Monthly Value MIN_MLY (Statistic 20): Minimum Monthly Value QUIN20% (Statistic 22): First Quintile QUIN40% (Statistic 23): Second Quintile QUIN60% (Statistic 24): Third Quintile QUIN80% (Statistic 25): Fourth Quintile MAX_MLY (Statistic 26): Maximum Monthly Value ------------------------------------------------------------------ byr: 1961 1961 1961 1961 1961 1961 1961 eyr: 1990 1990 1990 1990 1990 1990 1990 Statistic: MEANMLY MIN_MLY QUIN20% QUIN40% QUIN60% QUIN80% MAX_MLY Month ------------------------------------------------------------------ Jan 3.0 0.0 0.0 0.0 0.0 5.1 40.5 Feb 21.0 0.0 0.0 2.8 9.7 45.5 99.7 Mar 31.0 0.0 3.7 14.2 28.8 44.9 142.5 Apr 88.0 7.2 33.8 69.2 91.4 136.1 203.0 May 200.0 55.9 126.3 181.3 202.2 245.1 482.7 Jun 208.0 89.8 135.5 169.5 224.3 258.0 461.5 Jul 196.0 37.2 102.3 173.3 226.8 276.7 406.8 Aug 261.0 47.8 158.9 230.3 256.2 384.4 456.6 Sep 293.0 17.8 171.2 235.6 321.5 426.4 580.9 Oct 102.0 0.0 45.4 76.5 106.5 171.5 248.3 Nov 12.0 0.0 .5 2.7 6.4 20.1 63.9 Dec 1.0 0.0 0.0 0.0 0.0 .7 25.1 Annual 1416.0 NA NA NA NA NA NA Ann-NCDC 1416.0 NA NA NA NA NA NA ------------------------------------------------------------------ Element 12: Sea Level Pressure (hPa) MEAN (Statistic 01): Mean Value ------------------ byr: 1961 eyr: 1990 Month ------------------ Jan 1013.6 Feb 1011.4 Mar 1009.5 Apr 1007.8 May 1006.3 Jun 1005.1 Jul 1005.1 Aug 1005.1 Sep 1007.1 Oct 1010.1 Nov 1012.8 Dec 1014.3 Annual 1009.0 Ann-NCDC 1009.0 ------------------ Element 14: Vapor Pressure (hPa) MEAN (Statistic 01): Mean Value ------------------ byr: 1961 eyr: 1990 Month ------------------ Jan 18.1 Feb 20.3 Mar 23.0 Apr 26.5 May 29.4 Jun 29.8 Jul 29.4 Aug 29.6 Sep 29.6 Oct 26.8 Nov 22.1 Dec 18.5 Annual 25.3 Ann-NCDC 25.3 ------------------ Element 15: Sunshine MN_#HRS (Statistic 44): Mean Number of Hours ------------------ byr: 1961 eyr: 1990 Month ------------------ Jan 278.2 Feb 249.5 Mar 255.9 Apr 259.5 May 248.7 Jun 199.2 Jul 203.2 Aug 175.2 Sep 176.1 Oct 235.2 Nov 254.3 Dec 271.1 Annual 2806.1 Ann-NCDC 2806.1 ------------------ Element 16: Wind Speed (m/sec) MEAN (Statistic 01): Mean Value ------------------ byr: 1961 eyr: 1990 Month ------------------ Jan 1.4 Feb 1.4 Mar 1.4 Apr 1.4 May 1.4 Jun 1.6 Jul 1.8 Aug 1.7 Sep 1.1 Oct 1.3 Nov 1.7 Dec 1.7 Annual NA Ann-NCDC 1.5 ------------------ Element 95: Number Days with Precipitation GE Threshold (count) Qualifier: 1.0 mm MEANMLY (Statistic 15): Mean Monthly Value ------------------ byr: 1961 eyr: 1990 Month ------------------ Jan 0.0 Feb 1.0 Mar 3.0 Apr 6.0 May 12.0 Jun 13.0 Jul 12.0 Aug 15.0 Sep 16.0 Oct 7.0 Nov 2.0 Dec 0.0 Annual 87.0 Ann-NCDC 87.0 ------------------