No. of Variables	Training set			Test set
No. of Variables	RMSE	MAPE	NSE	RMSE	MAPE	NSE
1	4.4741	0.0460	0.9719	12.3694	0.1996	0.2036
2	3.5439	0.0347	0.9823	12.3736	0.1906	0.2030
3	3.5584	0.0348	0.9822	10.5109	0.1645	0.4249
4	3.6408	0.0355	0.9814	7.1444	0.1236	0.7343