No. of Model	Regression coefficients			MBE	RMSE	MPE%	R²	t-Test
No. of Model	A	B	C	MBE	RMSE	MPE%	R²	t-Test
Equation (7)	0.338	0.524	−	−3.58	3.54	4.25	0.974	2.68
Equation (8)	0.456	0.384	0.258	−4.32	2.68	2.25	0.965	3.14
Equation (9)	0.427	0.457	0.341	2.35	4.32	3.25	0.984	3.24
Equation (10)	0.524	0.365	0.415	3.45	3.24	3.45	0.975	4.75
Equation (11)	0.568	0.321	0.478	−3.28	3.41	4.31	0.968	2.85
Equation (12)	0.478	0.357	0.328	−2.57	4.21	5.32	0.985	1.89
Equation (13)	0.432	0.425	0.468	−3.14	3.65	−2.89	0.964	3.25
Equation (14)	0.353	0.511	0.387	4.25	2.45	4.37	0.982	2.45
Equation (15)	0.387	0.487	0.521	3.87	3.42	3.78	0.974	3.28