Number of days available for climatic review
| Parameter | Jan | Feb | Mar | Apr | May | Jun |
| Tmax | 434 | 392 | 434 | 420 | 434 | 420 |
| Tmin | 457 | 414 | 463 | 444 | 456 | 453 |
| Duration of sunshine | 0 | 0 | 0 | 0 | 0 | 0 |
| Precipitation | 123 | 103 | 126 | 141 | 149 | 136 |
| Humidity/Visibility | 23 | 19 | 24 | 21 | 23 | 25 |
| Parameter | Jul | Aug | Sep | Oct | Nov | Dec |
| Tmax | 434 | 434 | 420 | 434 | 420 | 434 |
| Tmin | 461 | 466 | 454 | 477 | 449 | 469 |
| Duration of sunshine | 0 | 0 | 0 | 0 | 0 | 0 |
| Precipitation | 170 | 163 | 151 | 153 | 154 | 162 |
| Humidity/Visibility | 28 | 28 | 29 | 32 | 21 | 28 |
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. |
Gemena