## 3 Results and Discussion
### Obtained Results
\begin{table}
\begin{tabular}{c c c c c c c c c c c c c} \hline \hline \multirow{2}{*}{**Zone**} & \multirow{2}{*}{**City**} & \multicolumn{8}{c}{**Month**} \\ \cline{3-14}  & & **Jan.** & **Feb.** & **Mar.** & **Apr.** & **May** & **Jun.** & **Jul.** & **Aug.** & **Sept.** & **Oct.** & **Nov.** & **Dec.** \\ \hline \multirow{8}{*}{\(1\)} & Agadir & Log & ExV & ExV & ExV & Nor & Nor & ExV & Log & ExV & Nor & Log & Web \\  & Casablanca & ExV & Web & ExV & ExV & Log & Nor & ExV & Web & ExV & Nor & Krn & ExV \\  & Essaouira & Krn & ExV & Nor & Nor & ExV & Nor & ExV & Nor & ExV & ExV & ExV & ExV & Log \\  & Kenitra & ExV & Web & ExV & Log & Nor & Nor & ExV & Nor & ExV & Web & Gmm & Nor \\  & Laayoune & ExV & Nor & Log & ExV & ExV & Log & Nor & Web & ExV & Web & Log & Log \\  & Rabat & ExV & Web & Krn & Nor & Nor & Nor & Nor & Nor & Nor & ExV & Log & Nor \\  & Safi & Log & Web & ExV & Nor & ExV & Nor & Nor & ExV & ExV & Log & Nor & Log \\  & Sidi Ifri & Log & Log & ExV & Nor & ExV & Nor & Nor & ExV & ExV & ExV & ExV & ExV & Log \\ \hline \multirow{8}{*}{\(2\)} & Al Hocieima & ExV & Nor & Nor & Nor & ExV & Log & Log & Log & Web & Log & ExV \\  & Larache & Log & Log & ExV & ExV & Log & Nor & Nor & Log & Nor & ExV & ExV & ExV \\  & Nador & ExV & ExV & Nor & Krn & ExV & ExV & Log & ExV & Nor & ExV & Nor & Nor \\  & Tanger & ExV & ExV & ExV & Log & Nor & Nor & Nor & Krn & Web & ExV & Log & ExV \\  & Tetouan & ExV & Nor & Krn & Nor & ExV & Web & Log & Log & Nor & Nor & Log & Nor \\ \hline \multirow{8}{*}{\(3\)} & Beni Mellal & Krn & ExV & ExV & Nor & ExV & Log & Log & ExV & Nor & Log & Nor & ExV \\  & Fes & Nor & ExV & ExV & Web & Log & Log & Log & ExV & Nor & ExV & Log & ExV \\  & Meknes & Nor & Web & ExV & ExV & Log & Krn & Nor & ExV & Web & Nor & Log & ExV \\  & Oujda & ExV & ExV & Nor & ExV & ExV & Web & Web & Web & ExV & Nor & Log \\  & Taza & Nor & Log & ExV & ExV & ExV & Log & Web & Web & ExV & Web & Log & Log \\ \hline \multirow{8}{*}{\(4\)} & Irane & ExV & ExV & ExV & Nor & Nor & Log & Web & Log & ExV & Nor & Log & Nor \\  & Midelt & Log & ExV & Log & ExV & ExV & ExV & Log & Nor & ExV & Log & Log & ExV & Log \\ \hline \multirow{8}{*}{\(5\)} & Marrakech & Nor & Krn & ExV & Nor & ExV & ExV & Log & Log & Log & Log & Krn & Log \\ \hline \multirow{8}{*}{\(6\)} & Er-Rachidia & Log & ExV & Log & ExV & ExV & ExV & ExV & Log & ExV & Log & Log & ExV & Log \\  & Ouarzazate & Nor & ExV & Log & Web & ExV & ExV & Web & Nor & Krn & Nor & Web & Log \\ \hline \hline \end{tabular}
\end{table} 
Table 6: PDFs for the DNI case for each city and month (normal = Nor, logarithmic = Log, extreme value = ExV, gamma = Gmm, Weibull = Web, kernel = Krn). Source: own elaboration. Figure 9: Bar chart with the rate of appearance of the PDFs in each month per climatic zone (DNI case). Source: own elaboration. For the GHI, the results are displayed in Table 7. As shown in Figure 11, the most dominant PDFs are the extreme value, logarithmic and the normal ones. Specifically, the extreme value PDF clearly prevails at zone 4, while it is less present at zone 2. In contrast to the DNI case, now the gamma PDF has a higher rate of appearance, particularly at zone 5. Again, a great location dependence of the obtained results is exhibited. Figure 11: Bar chart with the rate of appearance of the PDFs in each month per climatic zone (GHI case). Source: own elaboration. Figure 10: Example of the extreme value, normal and kernel PDFs’ fitting test results for the month of October at Nador, December at Kenitra and March at Tetouan (DNI case). Source: own elaboration. Figure 12 shows the histograms of the month of February at Ifrane, the month of October at Nador and the month of March at Tetouan, along with the adjusted extreme value, normal and kernel PDFs, respectively. It can be seen that the results of the distribution fitting test displayed good performance.