Number of days available for climatic review
| Parameter | Jan | Feb | Mar | Apr | May | Jun |
| Tmax | 2046 | 1871 | 2064 | 2001 | 2047 | 2001 |
| Tmin | 2052 | 1873 | 2075 | 2001 | 2052 | 1994 |
| Duration of sunshine | 0 | 0 | 0 | 0 | 0 | 0 |
| Precipitation | 156 | 141 | 156 | 151 | 155 | 151 |
| Humidity/Visibility | 152 | 139 | 154 | 148 | 153 | 147 |
| Parameter | Jul | Aug | Sep | Oct | Nov | Dec |
| Tmax | 2063 | 2067 | 2022 | 2129 | 2036 | 2096 |
| Tmin | 2072 | 2062 | 2025 | 2128 | 2039 | 2095 |
| Duration of sunshine | 0 | 0 | 0 | 0 | 0 | 0 |
| Precipitation | 156 | 159 | 182 | 215 | 194 | 204 |
| Humidity/Visibility | 152 | 152 | 175 | 209 | 187 | 193 |
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. |
