Number of days available for climatic review
| Parameter | Jan | Feb | Mar | Apr | May | Jun |
| Tmax | 2018 | 1819 | 2018 | 1957 | 2012 | 1962 |
| Tmin | 2018 | 1830 | 2014 | 1956 | 2008 | 1958 |
| Duration of sunshine | 0 | 0 | 0 | 0 | 0 | 0 |
| Precipitation | 174 | 155 | 177 | 169 | 181 | 180 |
| Humidity/Visibility | 143 | 131 | 140 | 137 | 136 | 145 |
| Parameter | Jul | Aug | Sep | Oct | Nov | Dec |
| Tmax | 2025 | 2025 | 1965 | 2043 | 1963 | 2048 |
| Tmin | 2025 | 2022 | 1959 | 2033 | 1960 | 2044 |
| Duration of sunshine | 0 | 0 | 0 | 0 | 0 | 0 |
| Precipitation | 199 | 199 | 199 | 196 | 183 | 216 |
| Humidity/Visibility | 159 | 160 | 155 | 150 | 134 | 166 |
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. |
