Number of days available for climatic review
| Paramètre | jan | fev | mar | avr | mai | juin |
| Tmax | 427 | 390 | 431 | 433 | 461 | 445 |
| Tmin | 432 | 389 | 432 | 429 | 464 | 442 |
| Durée d’insolation | 0 | 0 | 0 | 0 | 0 | 0 |
| Précipitation | 318 | 285 | 312 | 321 | 343 | 332 |
| Humidité/Visibilité | 89 | 82 | 90 | 104 | 121 | 115 |
| Paramètre | juillet | août | sep | oct | nov | déc |
| Tmax | 462 | 459 | 447 | 457 | 444 | 460 |
| Tmin | 462 | 461 | 444 | 459 | 446 | 459 |
| Durée d’insolation | 0 | 0 | 0 | 0 | 0 | 0 |
| Précipitation | 343 | 345 | 336 | 339 | 334 | 359 |
| Humidité/Visibilité | 123 | 121 | 116 | 117 | 114 | 118 |
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. |
Adam