Number of days available for climatic review
| Parameter | Jan | Feb | Mär | Apr | Mai | Jun |
| Tmax | 739 | 665 | 741 | 717 | 739 | 717 |
| Tmin | 738 | 671 | 740 | 718 | 742 | 720 |
| Sonnenscheindauer | 153 | 138 | 152 | 148 | 151 | 144 |
| Niederschlag | 744 | 672 | 744 | 721 | 744 | 720 |
| Feuchte/Sicht | 150 | 137 | 152 | 148 | 151 | 149 |
| Parameter | Jul | Aug | Sep | Okt | Nov | Dez |
| Tmax | 734 | 731 | 718 | 727 | 689 | 712 |
| Tmin | 734 | 731 | 719 | 729 | 688 | 711 |
| Sonnenscheindauer | 133 | 136 | 145 | 138 | 116 | 123 |
| Niederschlag | 742 | 748 | 722 | 737 | 690 | 713 |
| Feuchte/Sicht | 146 | 141 | 148 | 139 | 118 | 123 |
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. |
