Figure 7
From: Physicochemical and biological analysis of river Yamuna at Palla station from 2009 to 2019
(a) Yearly variation of COD from 2009 to 2019. The red line shows a linear trend of COD. (b) Monthly distribution of COD saturation at Palla station from 2009 to 2019. (c) Monthly mean variation of COD from 2009 to 2019.
