Number of days available for climatic review
| Parameter | Jan | Feb | Mär | Apr | Mai | Jun |
| Tmax | 352 | 317 | 363 | 366 | 377 | 363 |
| Tmin | 358 | 330 | 374 | 379 | 395 | 379 |
| Sonnenscheindauer | 190 | 165 | 253 | 219 | 241 | 236 |
| Niederschlag | 112 | 110 | 129 | 145 | 139 | 134 |
| Feuchte/Sicht | 75 | 67 | 81 | 91 | 100 | 101 |
| Parameter | Jul | Aug | Sep | Okt | Nov | Dez |
| Tmax | 365 | 371 | 355 | 364 | 354 | 353 |
| Tmin | 382 | 383 | 367 | 360 | 364 | 383 |
| Sonnenscheindauer | 229 | 263 | 227 | 244 | 181 | 176 |
| Niederschlag | 150 | 156 | 148 | 163 | 148 | 174 |
| Feuchte/Sicht | 92 | 97 | 87 | 78 | 81 | 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. |
