Number of days available for climatic review
| parametr | sty | lut | mar | kwi | maj | cze |
| Tmax | 694 | 634 | 704 | 707 | 727 | 709 |
| Tmin | 699 | 635 | 704 | 707 | 727 | 709 |
| słońce (godz.) | 0 | 0 | 0 | 0 | 0 | 0 |
| opad | 115 | 91 | 115 | 137 | 149 | 132 |
| wilgotność / widzialność | 63 | 65 | 70 | 91 | 94 | 96 |
| parametr | lip | sie | wrz | paź | lis | gru |
| Tmax | 725 | 725 | 711 | 729 | 707 | 733 |
| Tmin | 718 | 724 | 714 | 718 | 697 | 737 |
| słońce (godz.) | 0 | 0 | 0 | 0 | 0 | 0 |
| opad | 146 | 139 | 130 | 154 | 148 | 144 |
| wilgotność / widzialność | 92 | 91 | 96 | 83 | 84 | 90 |
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. |
