Number of days available for climatic review
| Parametro | Gen | Feb | Mar | Apr | Mag | Giu |
| Tmax | 89 | 66 | 79 | 78 | 86 | 69 |
| Tmin | 98 | 71 | 83 | 80 | 89 | 82 |
| Durata del soleggiamento | 103 | 78 | 89 | 85 | 90 | 83 |
| Precipitazione | 157 | 140 | 171 | 175 | 165 | 148 |
| Umidità/Visibilità | 139 | 125 | 135 | 118 | 120 | 129 |
| Parametro | Lug | Ago | Set | Ott | Nov | Dic |
| Tmax | 84 | 104 | 90 | 84 | 75 | 81 |
| Tmin | 88 | 101 | 83 | 80 | 69 | 81 |
| Durata del soleggiamento | 85 | 106 | 87 | 82 | 76 | 86 |
| Precipitazione | 157 | 192 | 201 | 185 | 168 | 168 |
| Umidità/Visibilità | 110 | 131 | 157 | 156 | 124 | 143 |
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. |
