Number of days available for climatic review
| Parameter | Jan | Feb | Mär | Apr | Mai | Jun |
| Tmax | 54 | 36 | 53 | 112 | 118 | 93 |
| Tmin | 56 | 45 | 50 | 106 | 118 | 90 |
| Sonnenscheindauer | 145 | 142 | 159 | 217 | 238 | 177 |
| Niederschlag | 96 | 85 | 94 | 121 | 125 | 125 |
| Feuchte/Sicht | 54 | 30 | 31 | 107 | 113 | 91 |
| Parameter | Jul | Aug | Sep | Okt | Nov | Dez |
| Tmax | 89 | 104 | 70 | 98 | 89 | 70 |
| Tmin | 92 | 99 | 73 | 96 | 83 | 67 |
| Sonnenscheindauer | 210 | 220 | 189 | 217 | 197 | 192 |
| Niederschlag | 126 | 121 | 118 | 127 | 127 | 133 |
| Feuchte/Sicht | 93 | 94 | 68 | 91 | 80 | 64 |
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. |
Arturo Michelena IAP