Number of days available for climatic review
| Paramètre | jan | fev | mar | avr | mai | juin |
| Tmax | 727 | 659 | 729 | 737 | 763 | 744 |
| Tmin | 733 | 659 | 732 | 736 | 760 | 743 |
| Durée d’insolation | 93 | 113 | 93 | 120 | 62 | 90 |
| Précipitation | 101 | 97 | 103 | 125 | 142 | 122 |
| Humidité/Visibilité | 79 | 73 | 78 | 103 | 110 | 112 |
| Paramètre | juillet | août | sep | oct | nov | déc |
| Tmax | 763 | 757 | 728 | 753 | 734 | 762 |
| Tmin | 766 | 763 | 743 | 762 | 731 | 763 |
| Durée d’insolation | 62 | 31 | 60 | 124 | 90 | 155 |
| Précipitation | 133 | 132 | 128 | 132 | 126 | 136 |
| Humidité/Visibilité | 113 | 110 | 108 | 104 | 97 | 107 |
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. |
