Number of days available for climatic review
| Paramètre | jan | fev | mar | avr | mai | juin |
| Tmax | 77 | 62 | 73 | 84 | 86 | 85 |
| Tmin | 82 | 81 | 86 | 87 | 91 | 92 |
| Durée d’insolation | 0 | 0 | 0 | 0 | 0 | 0 |
| Précipitation | 102 | 96 | 99 | 100 | 101 | 113 |
| Humidité/Visibilité | 63 | 55 | 63 | 64 | 65 | 68 |
| Paramètre | juillet | août | sep | oct | nov | déc |
| Tmax | 100 | 112 | 107 | 109 | 100 | 108 |
| Tmin | 102 | 122 | 119 | 112 | 109 | 120 |
| Durée d’insolation | 0 | 0 | 0 | 0 | 0 | 0 |
| Précipitation | 142 | 132 | 123 | 124 | 129 | 135 |
| Humidité/Visibilité | 80 | 87 | 84 | 83 | 79 | 84 |
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. |
