Quality Control (QC) was undertaken before to the data analysis. The QC procedure for data is checking the missing values of the data. The daily rainfall data is from APHRODITE data over Thailand . Which The data was collected locally land by APHRODITE. The figure shown in red area show no missing values. In green area show the missing values from 0 to 50% which it is coast. And in blue area show the missing values more than 50% because which water.