Number of days available for climatic review
| Paramètre | jan | fev | mar | avr | mai | juin |
| Tmax | 56 | 55 | 60 | 57 | 58 | 64 |
| Tmin | 61 | 53 | 61 | 61 | 61 | 70 |
| Durée d’insolation | 0 | 0 | 0 | 0 | 0 | 0 |
| Précipitation | 94 | 85 | 95 | 91 | 99 | 105 |
| Humidité/Visibilité | 43 | 40 | 45 | 44 | 43 | 49 |
| Paramètre | juillet | août | sep | oct | nov | déc |
| Tmax | 82 | 89 | 84 | 72 | 76 | 80 |
| Tmin | 89 | 90 | 86 | 86 | 78 | 85 |
| Durée d’insolation | 0 | 0 | 0 | 0 | 0 | 0 |
| Précipitation | 131 | 128 | 120 | 121 | 127 | 132 |
| Humidité/Visibilité | 60 | 63 | 60 | 58 | 58 | 62 |
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. |
