## 3 Wind Speed Data Characteristics and Analysis
\begin{table}
\begin{tabular}{c c c c c c c c c c c} \hline \hline
**Period** & **Mean** & \begin{tabular}{c} **Standard** \\ **Deviation** \\ \end{tabular} & **Min** & **Max** & \
\begin{tabular}{c} **Lower** \\ **Quartile** \\ \end{tabular} & **Median** &
\begin{tabular}{c} **Upper** \\ **Quartile** \\ \end{tabular} & **Coefficient of** & **Skewness** & **Kurtosis** \\ \hline January & 3.31 & 2.87 & 0.1 & 16.7 & 1.1 & 2.2 & 5.0 & 86.49 & 1.21 & 3.78 \\ February & 3.23 & 2.70 & 0.1 & 16.6 & 1.2 & 2.3 & 4.7 & 83.69 & 1.23 & 4.13 \\ March & 3.85 & 2.73 & 0.1 & 18.5 & 1.7 & 3.1 & 5.5 & 71.04 & 0.95 & 3.31 \\ April & 3.49 & 2.33 & 0.1 & 16.7 & 1.7 & 2.9 & 4.8 & 66.75 & 1.12 & 4.15 \\ May & 3.33 & 2.26 & 0.1 & 15.3 & 1.6 & 2.7 & 4.5 & 67.77 & 1.17 & 4.21 \\ June & 3.12 & 2.06 & 0.1 & 12.4 & 1.6 & 2.5 & 4.3 & 66.10 & 1.14 & 4.05 \\ July & 3.16 & 2.17 & 0.1 & 13.6 & 1.6 & 2.5 & 4.3 & 68.46 & 1.18 & 3.99 \\ August & 2.75 & 1.86 & 0.1 & 12.2 & 1.4 & 2.2 & 3.7 & 67.62 & 1.28 & 4.57 \\ September & 2.92 & 2.11 & 0.1 & 14.1 & 1.4 & 2.3 & 3.9 & 72.41 & 1.29 & 4.47 \\ October & 2.96 & 2.25 & 0.1 & 14.7 & 1.3 & 2.2 & 4.1 & 75.97 & 1.28 & 4.38 \\ November & 3.03 & 2.52 & 0.1 & 14.3 & 1.1 & 2.1 & 4.2 & 83.15 & 1.31 & 4.23 \\ December & 3.15 & 2.69 & 0.1 & 14.9 & 1.1 & 2.2 & 4.6 & 82.27 & 1.28 & 4.17 \\ \hline \hline \end{tabular}
\end{table} 
Table 1: Descriptive statistics of respective months. \begin{table}
\begin{tabular}{c c c c c c c c c c} \hline \hline
**Period** & **Mean** & \begin{tabular}{c} **Standard** \\ **Deviation** \\ \end{tabular} & **Min** & **Max** & \
\begin{tabular}{c} **Lower** \\ **Quartile** \\ \end{tabular} & **Median** &
\begin{tabular}{c} **Upper** \\ **Quartile** \\ \end{tabular} & **Coefficient of** & **Skewness** & **Kurtosis** \\ \hline Spring & 3.56 & 2.46 & 0.1 & 18.5 & 1.7 & 2.9 & 4.9 & 69.14 & 1.10 & 3.91 \\ Summer & 3.01 & 2.04 & 0.1 & 13.6 & 1.5 & 2.4 & 4.1 & 67.81 & 1.21 & 4.24 \\ Autumn & 2.97 & 2.30 & 0.1 & 14.7 & 1.3 & 2.2 & 4.1 & 77.44 & 1.32 & 4.44 \\ Winter & 3.23 & 2.76 & 0.1 & 16.7 & 1.1 & 2.2 & 4.8 & 85.27 & 1.24 & 4.02 \\ \hline \hline \end{tabular}
\end{table} 
Table 2: Descriptive statistics of seasons. 67.81% to 85.27% what indicates a very high variability of wind speed in this location. The coefficient of skewness for all seasons ranged from 1.10 to 1.32. That implies that distributions are highly right skewed. The coefficient of kurtosis ranged from 3.91 to 4.44, therefore the distributions can be regarded as highly leptokurtic distributions. **Analysis of wind speed data as a whole** (Table 3): The mean wind speed of 3.19 m/s was observed with a standard deviation of 2.41 m/s. The CV of 75.56%, skewness of 1.25, and kurtosis of 4.32 revealed that the wind speed data had extremely high variability in terms of the wind speed, were highly right skewed, and highly leptokurtic. **4. Wind Direction Analysis**  
Based on the available wind data, the wind directions were analysed. The wind rose diagrams show the temporal distribution of the wind direction at a given location. Here, the common form of the wind rose diagram was used, consisting of 36 evenly spaced sectors that were prepared using [57]. The wind rose was drawn for each season and for the whole studied period 2005-2021, as shown in Figures 3 and 4. **Figure 4. Wind rose diagrams for the seasons. **  
**Figure 5. Wind rose diagrams for the whole studied period 2005–2021. **As we may see in Figure 3, the most prevailing direction was west (W), with an occurrence rate of 34.99% and mean wind speed of 3.91 m/s during the whole study period 2005-2021. On the other hand, wind blowing from the north (N) featured the lowest occurrence rate among all directions, with only 4.45%, and a mean wind speed of 1.99 m/s. A large difference of up to 1.92 m/s can be observed between the mean wind speed blowing from the west and from the north. As it is obvious from Figure 4, the western wind direction was dominant in all seasons, with an occurrence rate ranging from 33.02% in the winter to 38.73% in the summer.