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. 2022 Feb 21;12:2870. doi: 10.1038/s41598-022-06900-6

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(a) Yearly variation of total coliform from 2009 to 2019. Redline shows an exponential trend of total coliform. (b) Monthly variation of total coliform from 2009 to 2019. (c) Monthly mean variation of total coliform from 2009 to 2019.