Time-Series Regression Model for Prediction of Mean Daily Global Solar Radiation in Al-Ain, UAE

Table 9

Statistical error data for the mean daily GSR model for regression and regression-ARMA models versus measured model data for years 1995–2004.

Description	Regression-measured	Regression and ARMA-measured
RMSE	0.3926	0.3363
MBE	−1.1013𝐸−06	5.8476𝐸−05
MABE	0.2818	0.2380
MAPE	4.85%	4.16%
𝑅^2	92.40%	94.42%