Number of days available for climatic review
| Parametro | Gen | Feb | Mar | Apr | Mag | Giu |
| Tmax | 805 | 692 | 744 | 720 | 742 | 719 |
| Tmin | 806 | 692 | 744 | 720 | 744 | 719 |
| Durata del soleggiamento | 248 | 254 | 279 | 270 | 341 | 270 |
| Precipitazione | 155 | 141 | 156 | 151 | 155 | 150 |
| Umidità/Visibilità | 153 | 139 | 154 | 149 | 153 | 148 |
| Parametro | Lug | Ago | Set | Ott | Nov | Dic |
| Tmax | 743 | 743 | 720 | 744 | 719 | 744 |
| Tmin | 744 | 744 | 719 | 742 | 719 | 744 |
| Durata del soleggiamento | 310 | 310 | 270 | 310 | 270 | 279 |
| Precipitazione | 155 | 157 | 152 | 155 | 150 | 155 |
| Umidità/Visibilità | 153 | 153 | 148 | 148 | 148 | 153 |
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. |
