Number of days available for climatic review
| Parametro | Gen | Feb | Mar | Apr | Mag | Giu |
| Tmax | 527 | 476 | 527 | 510 | 527 | 510 |
| Tmin | 527 | 476 | 527 | 510 | 527 | 510 |
| Durata del soleggiamento | 186 | 141 | 155 | 180 | 155 | 150 |
| Precipitazione | 496 | 448 | 496 | 480 | 496 | 480 |
| Umidità/Visibilità | 0 | 0 | 0 | 0 | 0 | 0 |
| Parametro | Lug | Ago | Set | Ott | Nov | Dic |
| Tmax | 527 | 527 | 510 | 527 | 510 | 527 |
| Tmin | 527 | 527 | 510 | 527 | 510 | 527 |
| Durata del soleggiamento | 248 | 217 | 210 | 217 | 180 | 186 |
| Precipitazione | 496 | 496 | 480 | 496 | 480 | 496 |
| Umidità/Visibilità | 0 | 0 | 0 | 0 | 0 | 0 |
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. |
Arturo Michelena IAP