Number of days available for climatic review
| Parametro | Gen | Feb | Mar | Apr | Mag | Giu |
| Tmax | 740 | 664 | 739 | 716 | 739 | 715 |
| Tmin | 738 | 664 | 741 | 713 | 740 | 717 |
| Durata del soleggiamento | 302 | 243 | 274 | 239 | 258 | 247 |
| Precipitazione | 188 | 172 | 188 | 189 | 190 | 184 |
| Umidità/Visibilità | 182 | 162 | 180 | 175 | 180 | 174 |
| Parametro | Lug | Ago | Set | Ott | Nov | Dic |
| Tmax | 738 | 738 | 740 | 763 | 739 | 769 |
| Tmin | 741 | 739 | 741 | 764 | 744 | 767 |
| Durata del soleggiamento | 250 | 280 | 272 | 307 | 312 | 352 |
| Precipitazione | 190 | 198 | 212 | 219 | 214 | 223 |
| Umidità/Visibilità | 180 | 179 | 201 | 207 | 201 | 209 |
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. |
