Number of days available for climatic review
| Paramètre | jan | fev | mar | avr | mai | juin |
| Tmax | 57 | 55 | 59 | 87 | 81 | 88 |
| Tmin | 62 | 57 | 59 | 88 | 91 | 89 |
| Durée d’insolation | 0 | 0 | 0 | 0 | 0 | 0 |
| Précipitation | 93 | 86 | 99 | 124 | 128 | 123 |
| Humidité/Visibilité | 44 | 41 | 44 | 62 | 63 | 63 |
| Paramètre | juillet | août | sep | oct | nov | déc |
| Tmax | 83 | 87 | 85 | 79 | 78 | 77 |
| Tmin | 87 | 91 | 86 | 83 | 78 | 89 |
| Durée d’insolation | 0 | 0 | 0 | 0 | 0 | 0 |
| Précipitation | 130 | 128 | 122 | 121 | 126 | 127 |
| Humidité/Visibilité | 61 | 65 | 63 | 61 | 59 | 64 |
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. |
