Table 1: Monthly variation of the meteorological parameters for Osogbo.

Month Pres (hPa) RH (%) T (K) GSR (MJm -2 day -1 )
Jan 985.0606 54.6957 298.9880 20.04941
Feb 984.7269 61.2357 299.2670 20.66168
Mar 984.0770 77.7766 298.8238 20.38582
Apr 984.1336 82.8942 298.6721 19.20785
May 985.4650 83.8966 298.5238 18.08382
Jun 987.3211 85.4241 297.6988 16.24195
Jul 988.0842 85.5587 296.7746 14.00205
Aug 988.1994 84.7541 296.6562 13.43064
Sep 987.1414 85.5913 297.0849 14.62353
Oct 986.3157 84.4151 297.3953 16.62408
Nov 985.4994 79.5991 297.5371 18.66065
Dec 985.3169 63.8901 298.1115 19.33749
Average 985.9451 77.4776 297.9611 17.6091