Number of days available for climatic review
| Paramètre | jan | fev | mar | avr | mai | juin |
| Tmax | 0 | 0 | 0 | 0 | 5 | 10 |
| Tmin | 0 | 0 | 0 | 0 | 5 | 14 |
| Durée d’insolation | 0 | 0 | 0 | 0 | 0 | 0 |
| Précipitation | 0 | 0 | 0 | 0 | 11 | 30 |
| Humidité/Visibilité | 147 | 0 | 555443208 | 8 | 555444232 | 8 |
| Paramètre | juillet | août | sep | oct | nov | déc |
| Tmax | 23 | 1 | 0 | 0 | 0 | 0 |
| Tmin | 23 | 1 | 0 | 0 | 0 | 0 |
| Durée d’insolation | 0 | 0 | 0 | 0 | 0 | 0 |
| Précipitation | 31 | 4 | 0 | 0 | 0 | 0 |
| Humidité/Visibilité | 555445256 | 8 | 555458568 | 8 | 555459592 | 8 |
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. |
