Number of days available for climatic review
| Parametro | Gen | Feb | Mar | Apr | Mag | Giu |
| Tmax | 737 | 664 | 729 | 738 | 769 | 745 |
| Tmin | 736 | 666 | 737 | 742 | 766 | 741 |
| Durata del soleggiamento | 217 | 225 | 217 | 240 | 279 | 210 |
| Precipitazione | 107 | 87 | 99 | 133 | 136 | 124 |
| Umidità/Visibilità | 86 | 82 | 83 | 110 | 116 | 116 |
| Parametro | Lug | Ago | Set | Ott | Nov | Dic |
| Tmax | 762 | 765 | 743 | 767 | 748 | 766 |
| Tmin | 763 | 768 | 739 | 769 | 742 | 770 |
| Durata del soleggiamento | 186 | 248 | 270 | 248 | 150 | 248 |
| Precipitazione | 137 | 136 | 131 | 123 | 123 | 127 |
| Umidità/Visibilità | 116 | 117 | 114 | 115 | 115 | 121 |
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. |
