IWA Publishing

Table 4

The Spearman rank correlation coefficient of dominant contaminant vs time Wp_0.05 = 0.506

Monitoring section	COD_Cr	BOD₅	NH₃-N	TP	COD_Mn
S1	0.046	0.070	−0.346	0.183	0.057
S2	−0.685**	0.056	0.077	−0.643**	−0.305
S3	−0.207	0.573*	0.634*	−0.266	−0.301
S4	0.589*	0.575*	0.449	0.519*	0.619*
S5	−0.305	0.552*	0.382	−0.070	0.112
S6	−0.455	0.308	−0.329	−0.573*	−0.315
S7	−0.573*	−0.867**	−0.888**	−0.713**	−0.189
S8	−0.070	−0.434	−0.692**	−0.280	0.315
S9	−0.028	0.280	−0.497	−0.014	0.490
S10	−0.084	0.559*	−0.189	−0.217	0.224
S11	0.291	0.105	0.046	0.140	0.126
S12	0.204	−0.583*	0.042	0.211	0.373

Monitoring section	COD_Cr	BOD₅	NH₃-N	TP	COD_Mn
S1	0.046	0.070	−0.346	0.183	0.057
S2	−0.685**	0.056	0.077	−0.643**	−0.305
S3	−0.207	0.573*	0.634*	−0.266	−0.301
S4	0.589*	0.575*	0.449	0.519*	0.619*
S5	−0.305	0.552*	0.382	−0.070	0.112
S6	−0.455	0.308	−0.329	−0.573*	−0.315
S7	−0.573*	−0.867**	−0.888**	−0.713**	−0.189
S8	−0.070	−0.434	−0.692**	−0.280	0.315
S9	−0.028	0.280	−0.497	−0.014	0.490
S10	−0.084	0.559*	−0.189	−0.217	0.224
S11	0.291	0.105	0.046	0.140	0.126
S12	0.204	−0.583*	0.042	0.211	0.373

*Relevant coefficients are significantly relevant at the level of 0.01 (one-side) (p < 0.01).

**Relevant coefficients are significantly relevant at the level of 0.05 (one-side) (p < 0.05).