The fluctuations of mean temperature are more apparent in the last six years (2007-2012) compared to the years
before (2002-2006). Mean temperature data is dividedinto 10 days division in each month, whereas (a) represent the
1st to 10th day, (b) represent 11th to 20th day, and (c) represent 21st day until end of the month.
From the same data source it is also apparent that the declines in tea yield (Fig.2) can be correlated with the
climatic conditions especially the temperature fluctuations, which through regression analysis (Fig.3) it is shown
that there is clear correlations between changes in the temperature with the tea productivities especially in the period
of Beginning of March (3a) to Beginning of May (5a).