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Table 2

Correlation between streamflow and water quality indexes for the three stations

StationStreamflow and CODMn
Streamflow and NH3-N
CODMn and NH3-N
Spearman's ρKendall's τSpearman's ρKendall's τSpearman's ρKendall's τ
Jieshou −0.407 −0.285 −0.471 −0.335 0.654 0.483 
Lutaizi −0.262 −0.180 −0.361 −0.243 0.611 0.438 
Bengbu −0.302 −0.213 −0.428 −0.304 0.493 0.351 
StationStreamflow and CODMn
Streamflow and NH3-N
CODMn and NH3-N
Spearman's ρKendall's τSpearman's ρKendall's τSpearman's ρKendall's τ
Jieshou −0.407 −0.285 −0.471 −0.335 0.654 0.483 
Lutaizi −0.262 −0.180 −0.361 −0.243 0.611 0.438 
Bengbu −0.302 −0.213 −0.428 −0.304 0.493 0.351 

All values of ρ and τ are highly significant, with p < 0.001.

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