Number of days available for climatic review
| Paramètre | jan | fev | mar | avr | mai | juin |
| Tmax | 87 | 77 | 85 | 112 | 113 | 115 |
| Tmin | 91 | 80 | 89 | 116 | 114 | 114 |
| Durée d’insolation | 0 | 0 | 0 | 0 | 0 | 0 |
| Précipitation | 98 | 98 | 97 | 128 | 132 | 127 |
| Humidité/Visibilité | 67 | 60 | 65 | 85 | 87 | 85 |
| Paramètre | juillet | août | sep | oct | nov | déc |
| Tmax | 111 | 120 | 114 | 113 | 108 | 114 |
| Tmin | 116 | 119 | 117 | 117 | 108 | 119 |
| Durée d’insolation | 0 | 0 | 0 | 0 | 0 | 0 |
| Précipitation | 134 | 141 | 123 | 125 | 131 | 128 |
| Humidité/Visibilité | 85 | 88 | 86 | 84 | 81 | 88 |
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. |
