Number of days available for climatic review
| Parameter | Jan | Feb | Mar | Apr | May | Jun |
| Tmax | 148 | 0 | 2466787 | 0 | 200 | 0 |
| Tmin | 555880864 | 8 | 5419552 | 0 | 555881072 | 8 |
| Duration of sunshine | 555880992 | 8 | 694413502 | 8 | 437236699 | -1958169831 |
| Precipitation | 555989000 | 8 | 555990024 | 8 | 555991048 | 8 |
| Humidity/Visibility | 148 | 0 | 555971592 | 8 | 555972616 | 8 |
| Parameter | Jul | Aug | Sep | Oct | Nov | Dec |
| Tmax | 869477248 | 8 | 0 | 0 | 2412846 | 0 |
| Tmin | 693864750 | 8 | 0 | 0 | 555886705 | 8 |
| Duration of sunshine | 255 | 0 | 24 | 48 | 555881456 | 8 |
| Precipitation | 555992072 | 8 | 555993096 | 8 | 555994120 | 8 |
| Humidity/Visibility | 555973640 | 8 | 555986952 | 8 | 555987976 | 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. |
