2) Second step: In ref. [11],[12],

2) Second step: In ref. [11],[12], if an interesting period is quite the same pattern at rate of 60 %, it is the seasonality. Seasonality in this paper uses a simple criterion, which is if the observed period is repeated at rate of about 75 %, it can be classified as the seasonality. In this paper, seasonal cycles are repeated every week. If there are three repeating traffic times from four times in the month, it is the seasonality. An example of calculation can be found in the subsection IV(A) subsection.