Table 2.

Distribution of easily treated parameters after normalization and their Pearson correlation relationships with W(2)/WQI.

Parameter	Mean (range)	coefficient		n
		WQI (2)	WQI
TN	83.06 (34.11–100.00)	0.60**	0.55**	359
TP	70.21 (29.33–100.00)	0.36**	0.50**	356
NH4-N	26.45 (2.27–100.00)	0.51**	0.39**	299
CODMn	28.80 (3.54–92.04)	0.54**	0.39**	360
pH	10.83 (0.00–100.00)	0.39**	0.31**	360
DO	26.38 (6.64–99.80)	−0.13*	−0.093	344

^** p < 0.01; ^*0.01 < p < 0.05.