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Table 1

Pearson's correlation coefficient determined between free chlorine residual and the number of odour detections

CorrelationPearson's correlation coefficient (r)Significance (p)Degrees of freedom
Chlorine odours – free chlorine inlet 0.60 0.04 19 
Chlorine odours – free chlorine outlet 0.49 0.09 19 
Earthy/musty odours – free chlorine inlet 0.78 0.01 19 
Earthy/musty odours – free chlorine outlet 0.69 0.02 19 
CorrelationPearson's correlation coefficient (r)Significance (p)Degrees of freedom
Chlorine odours – free chlorine inlet 0.60 0.04 19 
Chlorine odours – free chlorine outlet 0.49 0.09 19 
Earthy/musty odours – free chlorine inlet 0.78 0.01 19 
Earthy/musty odours – free chlorine outlet 0.69 0.02 19 
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