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Table 2 Expressive statistics for observed wind speed data at Chercher

From: Statistical scrutiny of Weibull parameters for wind energy potential appraisal in the area of northern Ethiopia

Months Data observations Wind speed range (m/s) Mean (m/s) Standard deviation (m/s) Skewness Kurtosis Power Density (W/m2) Q 95
Jan 248 1.850 2.425 0.474 −0.270 −0.393 8.730 0.086
Feb 224 1.810 2.786 0.468 0.570 0.962 13.238 0.091
Mar 248 2.310 2.931 0.539 0.230 0.498 15.422 0.086
Apr 240 2.110 3.147 0.551 0.076 −0.954 19.097 0.088
May 248 2.910 2.471 0.814 0.861 −0.388 9.240 0.086
June 240 1.500 2.827 0.390 −0.253 −0.591 13.842 0.088
July 248 2.260 3.096 0.536 0.337 −0.191 18.173 0.086
Aug 248 2.190 2.626 0.669 0.038 −1.158 11.091 0.086
Sep 240 1.860 1.905 0.524 0.913 0.169 4.234 0.088
Oct 248 1.750 1.889 0.396 1.347 2.126 4.126 0.086
Nov 240 1.360 2.452 0.341 0.258 −0.291 9.031 0.088
Dec 248 2.230 2.463 0.507 1.907 4.264 9.149 0.086
Feb–Apr 712 2.077 2.955 0.519 0.292 0.169 15.798 0.051
May–July 736 2.223 2.798 0.580 0.315 −0.390 13.416 0.050
Aug–Oct 736 1.933 2.140 0.530 0.766 0.379 6.001 0.050
Nov–Jan 736 2.002 2.446 0.441 0.631 1.193 8.969 0.050
Annual 5840 3.010 2.585 0.517 0.501 0.338 135.372 0.087