## 6 Results and Discussion
\begin{table}
\begin{tabular}{c c c c c c c c c} \hline \hline
**Period** & **Distribution** & \(KS\) & \(AD\) & \(\mathbf{In}\ L\) & \(AIC\) & \(BIC\) & \(R^{2}\) & \(RMSE^{a}\) \\ \hline \multirow{3}{*}{Entire period} & W2 & 0.059 & 662.6 & \(-\)308,150.5 & 616,305.0 & 616,324.8 & 0.9909 & 0.028 \\  & W3 & 0.050 & 470.5 & \(-\)306,925.1 & 613,856.2 & 613,885.9 & 0.9936 & 0.023 \\  & EW & **0.034** & **243.3** & **\(-\)306,288.0** & **612,582.0** & **612,611.8** & **0.9970** & **0.016** \\ \hline \multirow{3}{*}{Spring} & W2 & 0.053 & 124.4 & \(-\)80,074.0 & 160,152.1 & 160,169.1 & 0.9933 & 0.024 \\  & W3 & 0.047 & 92.7 & \(-\)79,880.8 & 159,767.6 & 159,793.1 & 0.9950 & 0.021 \\  & EW & **0.035** & **54.6** & **\(-\)79,757.7** & **159,521.4** & **159,547.0** & **0.9972** & **0.016** \\ \hline \multirow{3}{*}{Summer} & W2 & 0.067 & 227.4 & \(-\)73,395.1 & 146,794.3 & 146,811.4 & 0.9873 & 0.032 \\  & W3 & 0.061 & 179.7 & \(-\)73,121.5 & 146,248.9 & 146,274.5 & 0.9899 & 0.029 \\  & EW & **0.037** & **54.3** & **\(-\)72,601.7** & **145,209.5** & **145,235.0** & **0.9972** & **0.015** \\ \hline \multirow{3}{*}{Autumn} & W2 & 0.066 & 218.7 & \(-\)74,507.1 & 149,018.2 & 149,035.2 & 0.9880 & 0.032 \\  & W3 & 0.057 & 156.8 & \(-\)74,116.8 & 148,239.7 & 148,265.3 & 0.9915 & 0.027 \\  & EW & **0.033** & **64.5** & **\(-\)73,827.2** & **147,660.4** & **147,685.9** & **0.9970** & **0.016** \\ \hline \multirow{3}{*}{Winter} & W2 & 0.063 & 215.2 & \(-\)78,083.0 & 156,170.0 & 156,187.0 & 0.9884 & 0.032 \\  & W3 & 0.049 & 143.7 & \(-\)77,557.3 & **155,120.5** & **155,146.0** & 0.9927 & 0.025 \\ \cline{1-1}  & EW & **0.046** & **130.6** & \(-\)77,737.6 & 155,481.1 & 155,506.6 & **0.9936** & **0.024** \\ \hline \hline \end{tabular}  
* The best results of the GOF tests and of the model selection criteria are highlighted in bold.  
\end{table} 
Table 6: The GOF tests and model selection criteria for the entire considered period and for the seasons. \begin{table}
\begin{tabular}{c c c c c c c} \hline \hline
**Distribution** & \
\begin{tabular}{c} **Estimated** \\ **Parameters** \\ \end{tabular} & **Jan.** & **Feb.** & **Mar.** & **Apr.** & **May** & **June** \\ \hline \multirow{2}{*}{W2} & \(a\) & 1.1862 & 1.2171 & 1.4476 & 1.5725 & 1.5599 & 1.6024 \\  & \(b\) & 3.5240 & 3.4546 & 4.2539 & 3.9058 & 3.7221 & 3.4978 \\ \hline \multirow{3}{*}{W3} & \(a\) & 1.1133 & 1.1360 & 1.3928 & 1.5199 & 1.5009 & 1.5403 \\  & \(b\) & 3.3507 & 3.2860 & 4.1266 & 3.7968 & 3.5984 & 3.3781 \\  & \(c\) & 0.0961 & 0.0903 & 0.0875 & 0.0803 & 0.0925 & 0.0910 \\ \hline \multirow{3}{*}{EW} & \(a\) & 0.7044 & 0.9292 & 1.1745 & 1.0970 & 0.9501 & 0.9537 \\  & \(b\) & 1.3078 & 2.2820 & 3.2900 & 2.4519 & 1.8160 & 1.6601 \\  & \(\gamma\) & 2.8359 & 1.6514 & 1.4615 & 2.0194 & 2.7514 & 2.9133 \\ \hline \multirow{3}{*}{**Distribution**} &
\begin{tabular}{c} **Estimated** \\ **Parameters** \\ \end{tabular} & **July** & **Aug.** & **Sept.** & **Oct.** & **Nov.** & **Dec.** \\ \hline \multirow{2}{*}{W2} & \(a\) & 1.5523 & 1.5765 & 1.4656 & 1.3873 & 1.2650 & 1.2178 \\  & \(b\) & 3.5363 & 3.0818 & 3.2430 & 3.2543 & 3.2742 & 3.3750 \\ \hline \multirow{3}{*}{W3} & \(a\) & 1.4918 & 1.5082 & 1.4001 & 1.3198 & 1.1964 & 1.1473 \\  & \(b\) & 3.4131 & 2.9617 & 3.1175 & 3.1203 & 3.1214 & 3.2118 \\  & \(c\) & 0.0922 & 0.0905 & 0.0888 & 0.0902 & 0.0953 & 0.0963 \\ \hline \multirow{3}{*}{EW} & \(a\) & 0.8530 & 0.8841 & 0.8586 & 0.8306 & 0.6598 & 0.6786 \\  & \(b\) & 1.3725 & 1.2609 & 1.3794 & 1.3990 & 0.8914 & 1.0755 \\ \cline{1-1}  & \(\gamma\) & 3.5642 & 3.4373 & 3.0535 & 2.8575 & 3.9939 & 3.3284 \\ \hline \hline \end{tabular}  
* The best results of the GOF tests and of the model selection criteria are highlighted in bold.  
\end{table} 
Table 7: Maximum likelihood estimates of parameters of the modelled distributions—the respective months. Figure 5: Modelled probability distributions fitted to the histogram of the wind speed data–the entire considered period. Figure 6: Modelled probability distributions fitted to the histogram of the wind speed data—the seasons. Figure 7: _Cont_.