13.08 ÂE, altitude 354m) for a period of thirteen years (1996 –2010) were obtained from
the Nigerian Meteorological Agency, Maiduguri, Borne State. These data which include
Gunn-Bellani solar radiation, sunshine hour duration, relative humidity, rainfall, wind speed,
maximum and minimum temperatures were analyzed using both single-variable and multi-
variable regression techniques of the Angstrom type to generate several regression …