Number of days available for climatic review
| Parameter | Jan | Feb | Mar | Apr | May | Jun |
| Tmax | 1430 | 1316 | 1454 | 1429 | 1484 | 1437 |
| Tmin | 2608 | 2380 | 2632 | 2572 | 2660 | 2577 |
| Duration of sunshine | 0 | 0 | 0 | 0 | 0 | 0 |
| Precipitation | 124 | 112 | 124 | 146 | 155 | 150 |
| Humidity/Visibility | 122 | 111 | 122 | 143 | 153 | 148 |
| Parameter | Jul | Aug | Sep | Oct | Nov | Dec |
| Tmax | 1484 | 1484 | 1439 | 1476 | 1436 | 1484 |
| Tmin | 2662 | 2663 | 2578 | 2655 | 2578 | 2663 |
| Duration of sunshine | 0 | 0 | 0 | 0 | 0 | 0 |
| Precipitation | 156 | 156 | 151 | 153 | 150 | 155 |
| Humidity/Visibility | 152 | 151 | 147 | 148 | 148 | 154 |
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. |
