Number of days available for climatic review
| Parametro | Gen | Feb | Mar | Apr | Mag | Giu |
| Tmax | 182 | 161 | 177 | 170 | 180 | 179 |
| Tmin | 184 | 157 | 175 | 163 | 175 | 172 |
| Durata del soleggiamento | 275 | 239 | 297 | 284 | 299 | 292 |
| Precipitazione | 188 | 182 | 188 | 195 | 188 | 182 |
| Umidità/Visibilità | 175 | 155 | 172 | 170 | 181 | 177 |
| Parametro | Lug | Ago | Set | Ott | Nov | Dic |
| Tmax | 176 | 178 | 205 | 205 | 177 | 182 |
| Tmin | 180 | 181 | 198 | 204 | 207 | 195 |
| Durata del soleggiamento | 301 | 306 | 319 | 297 | 327 | 317 |
| Precipitazione | 192 | 192 | 214 | 217 | 214 | 223 |
| Umidità/Visibilità | 174 | 174 | 195 | 199 | 192 | 186 |
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. |
