## 3 Results and Discussion
### Analysis and Discussion of 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 & ExV & Web & Web & Nor & Web & Web & Krn & Log & ExV & Web & Web & Log \\  & Casablanca & Nor & Gmm & Web & Nor & Nor & Web & ExV & Nor & Web & ExV & Nor & Web \\  & Essaouira & Log & Gmm & ExV & Log & ExV & Log & ExV & ExV & Web & ExV & Log & Log \\  & Kenitra & Nor & Log & Web & Log & Web & EeV & ExV & Nor & Nor & Nor & Nor & Krn \\  & Laayoune & ExV & Web & Nor & ExV & ExV & Log & ExV & Web & Web & Log & Krn \\  & Rabat & Log & Log & Web & Log & Nor & Log & ExV & Krn & Log & Nor & Log & Krn \\  & Safi & Log & Log & ExV & Krn & ExV & Log & ExV & Nor & Nor & Log & Log \\  & Sidi Irni & Nor & Log & Log & Log & Nor & Nor & ExV & ExV & Nor & ExV & Web & Log \\ \hline \multirow{8}{*}{2} & [PERSON] & Log & Log & Krn & Nor & ExV & Nor & Log & Log & Web & Log & Web \\  & Larache & Log & Log & Web & Log & Nor & Nor & Nor & Web & Nor & Log & ExV \\  & Nador & Nor & Krn & Krn & Nor & ExV & Nor & Log & Nor & Log & Web & Nor \\  & Tanger & Log & Gmm & Web & Log & Web & Krn & Log & ExV & Nor & Web & Log & ExV \\  & Tetouan & Log & Web & Web & ExV & ExV & ExV & Krn & Log & Log & ExV & Nor & ExV \\ \hline \multirow{8}{*}{3} & [PERSON] & Nor & ExV & Log & Web & ExV & Web & Web & ExV & Web & Log & Nor & ExV \\  & Fes & Log & Nor & ExV & Log & Log & Web & Nor & Nor & ExV & Nor & ExV \\  & Meknes & Log & Nor & ExV & Log & Log & ExV & Nor & ExV & Krn & Nor & ExV \\  & Cujda & Nor & ExV & Log & ExV & ExV & Log & Web & Web & Nor & Web & Web & Log \\  & Taza & Log & Log & Log & ExV & Krn & Log & Web & Nor & ExV & Web & Log & ExV \\ \hline \multirow{8}{*}{4} & Ifrane & ExV & ExV & ExV & ExV & ExV & Log & Log & Nor & Log & ExV & Nor & Nor & ExV \\  & Midelt & ExV & Nor & Log & Krn & ExV & Log & ExV & Nor & ExV & Log & Log & ExV \\ \hline \multirow{8}{*}{6} & Marrakech & Nor & Nor & Log & ExV & ExV & ExV & Log & Web & Web & Gmm & Log & Nor \\ \cline{1-1}  & Er-Rachidia & Gmm & Log & Log & Nor & Nor & Web & Nor & ExV & Log & Krn & Web & ExV \\ \cline{1-1}  & Ouarzzate & Nor & Log & Nor & Web & ExV & ExV & ExV & Nor & Nor & Web & ExV & ExV \\ \hline \hline \end{tabular}
\end{table} 
Table 7: PDFs for the GHI case for each city and month (normal = Nor, Logarithmic = log, extreme value = ExV, gamma = Gmm, Weibull = Web, kernel = Krn). Source: own elaboration. are not only far more complex, but are also more demanding in terms of the needed input meteorological data set. Taking into account the characteristics of both ANN and the presented methodology, it could be concluded that each method could be best suited for different types of applications. When the accuracy of radiation forecasting is the ultimate result, the performance of ANN is far superior. Nevertheless, when it is simply needed to embed the radiation uncertainty in the analysis, as is the case of the techno-economic valuation of solar energy assets, the presented methodology can reach this objective with much less complexity and less demanding input data. The obtained PDFs can be embedded into probabilistic mathematical models for obtaining a big number of possible outcomes of a variable of interest, whether it is solar irradiation, or a profitability metric depending on it. Particularly, in the case of the well-known Monte Carlo simulation method, repeated sampling from the solar irradiation PDF is performed, in order to obtain the statistical properties of the uncertain output variable and provide the likelihood of occurrence of a determined outcome. In order to illustrate the use and to assess the performance of the obtained PDFs, the GHI PDF for the month of October in the city of Rabat has been embedded within a probabilistic mathematical model, specifically a Monte Carlo simulation.