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Table 5

Statistics of the two best models

Applied model	Model	Training			Testing			ANN configns
Applied model	Model	R	COD	RMSE	R	COD	RMSE	ANN configns
ANN	M16	0.997	0.994	9.63	0.998	0.976	36.58	3-7-1
ANN	M5	0.981	0.963	23.59	0.979	0.946	31.11	4-6-1
GEP	M5	0.967	0.936	31.32	0.965	0.926	36.58	—
GEP	M17	0.973	0.948	28.09	0.966	0.924	36.99	—

Applied model	Model	Training			Testing			ANN configns
Applied model	Model	R	COD	RMSE	R	COD	RMSE	ANN configns
ANN	M16	0.997	0.994	9.63	0.998	0.976	36.58	3-7-1
ANN	M5	0.981	0.963	23.59	0.979	0.946	31.11	4-6-1
GEP	M5	0.967	0.936	31.32	0.965	0.926	36.58	—
GEP	M17	0.973	0.948	28.09	0.966	0.924	36.99	—