Number of days available for climatic review
| Parameter | Jan | Feb | Mar | Apr | May | Jun |
| Tmax | 2063 | 1867 | 2065 | 2022 | 2081 | 2024 |
| Tmin | 2069 | 1870 | 2073 | 2022 | 2082 | 2030 |
| Duration of sunshine | 0 | 0 | 0 | 0 | 0 | 0 |
| Precipitation | 156 | 145 | 156 | 172 | 186 | 180 |
| Humidity/Visibility | 147 | 135 | 149 | 163 | 173 | 169 |
| Parameter | Jul | Aug | Sep | Oct | Nov | Dec |
| Tmax | 2090 | 2089 | 2027 | 2097 | 2033 | 2097 |
| Tmin | 2097 | 2089 | 2031 | 2095 | 2039 | 2098 |
| Duration of sunshine | 0 | 0 | 0 | 0 | 0 | 0 |
| Precipitation | 187 | 188 | 180 | 184 | 180 | 186 |
| Humidity/Visibility | 169 | 174 | 166 | 172 | 173 | 181 |
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. |
