Number of days available for climatic review
| Parametro | Gen | Feb | Mar | Apr | Mag | Giu |
| Tmax | 580 | 535 | 589 | 570 | 583 | 570 |
| Tmin | 579 | 535 | 587 | 570 | 582 | 570 |
| Durata del soleggiamento | 124 | 141 | 155 | 150 | 155 | 150 |
| Precipitazione | 155 | 141 | 157 | 152 | 155 | 150 |
| Umidità/Visibilità | 154 | 139 | 153 | 148 | 154 | 149 |
| Parametro | Lug | Ago | Set | Ott | Nov | Dic |
| Tmax | 588 | 590 | 599 | 614 | 597 | 620 |
| Tmin | 585 | 589 | 598 | 614 | 598 | 619 |
| Durata del soleggiamento | 155 | 155 | 150 | 155 | 150 | 155 |
| Precipitazione | 157 | 159 | 181 | 183 | 180 | 186 |
| Umidità/Visibilità | 152 | 154 | 176 | 179 | 176 | 185 |
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. |
