Modeling Pan Evaporation for Kuwait by Multiple Linear Regression

Table 3

Fitting accuracy of regression models using monthly average meteorological data for Kuwait from 1993 to 2006 (calibration range).

Variable	Accuracy measure
	𝑅^2𝑎	MAPE	RMSE (mm)	NSE
One-variable models
𝑇	0.972	16.27	2.05	0.9121
𝐻	0.971	16.15	2.24	0.8945
𝑢	0.843	72.65	5.30	0.4100
Two-variable models
𝑇,𝐻	0.980	12.74	1.68	0.9405
𝑇,𝑢	0.977	17.38	2.01	0.9150
𝐻,𝑢	0.972	17.68	2.22	0.8968
Three-variable model
𝑇,𝐻,𝑢	0.979	13.23	1.69	0.9402