Number of days available for climatic review
| Parametro | Gen | Feb | Mar | Apr | Mag | Giu |
| Tmax | 741 | 670 | 742 | 719 | 741 | 719 |
| Tmin | 743 | 669 | 744 | 718 | 743 | 716 |
| Durata del soleggiamento | 248 | 254 | 279 | 300 | 310 | 270 |
| Precipitazione | 186 | 168 | 186 | 181 | 186 | 182 |
| Umidità/Visibilità | 184 | 167 | 184 | 179 | 184 | 178 |
| Parametro | Lug | Ago | Set | Ott | Nov | Dic |
| Tmax | 742 | 743 | 746 | 765 | 745 | 775 |
| Tmin | 742 | 746 | 748 | 767 | 747 | 775 |
| Durata del soleggiamento | 310 | 310 | 300 | 310 | 270 | 279 |
| Precipitazione | 186 | 190 | 212 | 215 | 210 | 217 |
| Umidità/Visibilità | 184 | 185 | 206 | 210 | 206 | 214 |
Climate data is usually derived from meteorological data of a certain number of years. The actual number of recorded years may vary from only a couple to 50 years or more. The quality of climate data depends on the number of available recorded years. Fewer years means less reliable data. The standart-period for reliable climate data is 30 years. For example, the mean monthly temperature for, let's say January, would ideally calculated from a total number of 930 recorded January-days. However, the usual number of recorded days is much smaller. The table above shows the actual number of recorded days for every parameter measured. |
