Number of days available for climatic review
| Parameter | Jan | Feb | Mar | Apr | May | Jun |
| Tmax | 1589 | 1442 | 1589 | 1552 | 1611 | 1552 |
| Tmin | 1556 | 1401 | 1550 | 1504 | 1552 | 1508 |
| Duration of sunshine | 0 | 0 | 0 | 0 | 0 | 0 |
| Precipitation | 68 | 61 | 69 | 87 | 108 | 102 |
| Humidity/Visibility | 36 | 41 | 43 | 57 | 58 | 50 |
| Parameter | Jul | Aug | Sep | Oct | Nov | Dec |
| Tmax | 1585 | 1582 | 1530 | 1586 | 1534 | 1599 |
| Tmin | 1550 | 1550 | 1500 | 1550 | 1500 | 1550 |
| Duration of sunshine | 0 | 0 | 0 | 0 | 0 | 0 |
| Precipitation | 111 | 108 | 108 | 110 | 110 | 118 |
| Humidity/Visibility | 52 | 59 | 46 | 47 | 41 | 55 |
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. |
