Table 4.

Optimum network parameters of different target series

Time series	Target series	Hidden units	Delays	RMSE			R
				training	validation	testing
Monthly	OS	11	8	53.74	309.8	280.89	0.92
	RS	16	6	113.58	187.02	221.44	0.82
Daily	OS	13	10	30.07	36.01	46.48	0.96
	RS	14	7	33.91	51.35	41.90	0.87

Note: OS = original series, RS = residual series