Skip to Main Content
Table 1

Monthly rainfall distributions for Asir (mm)

MonthDistributionAverageCV (%)Skewness
January Gamma (0.62, 15.47) 9.81 125.7 2.71 
February Gamma (0.48, 18.75, 0.086) 8.98 145.4 3.19 
March Gamma (0.68, 29.29) 20.22 120.0 2.47 
April W (1.09, 31.93, 4.3) 35.26 81.03 1.91 
May LEV (17.81, 16.1) 27.0 76.3 1.10 
June W (1.0, 5.07, 0.07) 5.1 99.24 1.97 
July N (8.93, 5.16) 8.9 58.55 -0.03 
August LN (2.79, 0.47, 0) 18.19 49.37 1.65 
September Gamma (0.77, 4.31, 0.04) 3.45 113.4 2.21 
October W (0.64, 3.48) 4.85 161.6 3.76 
November LN (1.05, 1.57) 9.43 253.7 9.11 
December W (0.73, 4.62) 5.69 132.5 2.67 
MonthDistributionAverageCV (%)Skewness
January Gamma (0.62, 15.47) 9.81 125.7 2.71 
February Gamma (0.48, 18.75, 0.086) 8.98 145.4 3.19 
March Gamma (0.68, 29.29) 20.22 120.0 2.47 
April W (1.09, 31.93, 4.3) 35.26 81.03 1.91 
May LEV (17.81, 16.1) 27.0 76.3 1.10 
June W (1.0, 5.07, 0.07) 5.1 99.24 1.97 
July N (8.93, 5.16) 8.9 58.55 -0.03 
August LN (2.79, 0.47, 0) 18.19 49.37 1.65 
September Gamma (0.77, 4.31, 0.04) 3.45 113.4 2.21 
October W (0.64, 3.48) 4.85 161.6 3.76 
November LN (1.05, 1.57) 9.43 253.7 9.11 
December W (0.73, 4.62) 5.69 132.5 2.67 

W: Weibull; LN, LogNormal; LEV: largest extreme value; N: normal (for W, LN, LEV and Gamma distributions: 1st parameter = shape factor; 2nd parameter = location; 3rd parameter: threshold value). For the normal distribution [1st parameter: mean; and 2nd parameter: standard deviation]; CV: coefficient of variation.

Close Modal

or Create an Account

Close Modal
Close Modal