Seasons Months 2010 2011
Station I Station II Station I Station II
Post monsoon January 7.5 7.4 7.4 7.5
February 7.7 7.5 7.8 7.6
March 7.9 7.9 7.9 8.3
Summer April 8.1 8.1 8.0 8.4
May 8.2 8.2 8.3 8.5
June 8.3 8.5 8.4 8.6
Pre monsoon July 8.0 8.3 8.3 8.4
August 8.1 8.2 8.0 8.3
September 8.2 8.0 8.1 7.9
Monsoon October 7.9 7.9 7.9 7.6
November 7.6 7.4 7.5 7.5
December 7.5 7.4 7.5 7.4
Table 5: Monthly variations of pH from January 2010 to December 2011.