Number of days available for climatic review
| Parametro | Gen | Feb | Mar | Apr | Mag | Giu |
| Tmax | 672 | 598 | 670 | 684 | 700 | 676 |
| Tmin | 614 | 556 | 635 | 654 | 669 | 654 |
| Durata del soleggiamento | 218 | 166 | 190 | 284 | 265 | 255 |
| Precipitazione | 124 | 114 | 124 | 152 | 156 | 148 |
| Umidità/Visibilità | 55 | 47 | 58 | 114 | 112 | 113 |
| Parametro | Lug | Ago | Set | Ott | Nov | Dic |
| Tmax | 699 | 706 | 676 | 698 | 671 | 663 |
| Tmin | 671 | 672 | 657 | 670 | 646 | 641 |
| Durata del soleggiamento | 347 | 321 | 310 | 322 | 270 | 233 |
| Precipitazione | 156 | 155 | 149 | 153 | 148 | 128 |
| Umidità/Visibilità | 115 | 112 | 107 | 116 | 106 | 65 |
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