Number of days available for climatic review
| Paramètre | jan | fev | mar | avr | mai | juin |
| Tmax | 772 | 696 | 770 | 744 | 773 | 748 |
| Tmin | 773 | 698 | 773 | 746 | 772 | 748 |
| Durée d’insolation | 119 | 104 | 119 | 112 | 122 | 116 |
| Précipitation | 124 | 113 | 124 | 121 | 125 | 121 |
| Humidité/Visibilité | 121 | 109 | 121 | 116 | 120 | 117 |
| Paramètre | juillet | août | sep | oct | nov | déc |
| Tmax | 769 | 770 | 744 | 760 | 716 | 772 |
| Tmin | 771 | 772 | 747 | 769 | 718 | 773 |
| Durée d’insolation | 114 | 117 | 109 | 107 | 84 | 120 |
| Précipitation | 128 | 127 | 120 | 122 | 122 | 124 |
| Humidité/Visibilité | 119 | 121 | 116 | 115 | 86 | 121 |
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. |
