Figure 5(a) shows the comparison of CDF of bias corrected rainfall, raw PRECIS rainfall with
observed rainfall in the present time from 1980 to 2007 in Hat
Yai. It can be seen that CDF of bias corrected rainfall is very
close to observed rainfall compare with raw PRECIS rainfall
meaning that the bias correction method applied in this study
shows good performance and can reduce the bias of raw
PRECIS rainfall obviously.