Number of days available for climatic review
| Parametro | Gen | Feb | Mar | Apr | Mag | Giu |
| Tmax | 369 | 335 | 372 | 358 | 371 | 371 |
| Tmin | 372 | 337 | 370 | 359 | 372 | 373 |
| Durata del soleggiamento | 0 | 0 | 0 | 0 | 0 | 0 |
| Precipitazione | 62 | 61 | 62 | 63 | 62 | 73 |
| Umidità/Visibilità | 61 | 55 | 61 | 58 | 62 | 70 |
| Parametro | Lug | Ago | Set | Ott | Nov | Dic |
| Tmax | 401 | 401 | 388 | 399 | 384 | 402 |
| Tmin | 400 | 402 | 388 | 397 | 389 | 402 |
| Durata del soleggiamento | 0 | 0 | 0 | 0 | 0 | 0 |
| Precipitazione | 96 | 93 | 92 | 93 | 91 | 98 |
| Umidità/Visibilità | 91 | 90 | 86 | 85 | 86 | 91 |
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. |
