The estimated associations between gene expression potential and sewage treatment facility, season and treatment process in STP wastewater.

The explanatory variables, STP-2 (facility: relatively newly build and receives mixed domestic and hospital wastewater), pre-monsoon (season) and step 1 (process) were used as the reference levels. The asterisks shown to the P values shows the levels of statistical significance (* The estimated associations between gene expression potential and sewage treatment facility, season and treatment process in STP wastewater.