Number of days available for climatic review
| Parameter | Jan | Feb | Mar | Apr | May | Jun |
| Tmax | 2064 | 1867 | 2065 | 2004 | 2058 | 2000 |
| Tmin | 2070 | 1874 | 2068 | 2006 | 2062 | 2000 |
| Duration of sunshine | 0 | 0 | 0 | 0 | 0 | 0 |
| Precipitation | 155 | 141 | 156 | 151 | 155 | 150 |
| Humidity/Visibility | 153 | 138 | 153 | 148 | 149 | 147 |
| Parameter | Jul | Aug | Sep | Oct | Nov | Dec |
| Tmax | 2066 | 2064 | 1998 | 2095 | 2034 | 2102 |
| Tmin | 2075 | 2071 | 2006 | 2099 | 2039 | 2106 |
| Duration of sunshine | 0 | 0 | 0 | 0 | 0 | 0 |
| Precipitation | 156 | 157 | 151 | 184 | 180 | 186 |
| Humidity/Visibility | 150 | 150 | 143 | 178 | 175 | 184 |
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. |
