Number of days available for climatic review
| Parameter | Jan | Feb | Mar | Apr | May | Jun |
| Tmax | 0 | 0 | 2290041 | 0 | 200 | 0 |
| Tmin | -7200 | 32767 | 255 | 0 | -6992 | 32767 |
| Duration of sunshine | 20639976 | 8 | -6968 | 32767 | -1683172941 | 2098015578 |
| Precipitation | -7136 | 32767 | 12444241 | 8 | 20639936 | 8 |
| Humidity/Visibility | 147 | 0 | 3668992 | 8 | 3670016 | 8 |
| Parameter | Jul | Aug | Sep | Oct | Nov | Dec |
| Tmax | 27504256 | 8 | 0 | 0 | 2309034 | 0 |
| Tmin | 13157391 | 8 | 147 | 0 | 0 | 0 |
| Duration of sunshine | 15527344 | 8 | 24 | 48 | -6608 | 32767 |
| Precipitation | 69632 | 0 | 0 | 0 | 65536 | 0 |
| Humidity/Visibility | 3671040 | 8 | 3672064 | 8 | 3673088 | 8 |
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. |
