Number of days available for climatic review
| parametr | sty | lut | mar | kwi | maj | cze |
| Tmax | 711 | 636 | 733 | 715 | 743 | 720 |
| Tmin | 710 | 639 | 734 | 719 | 744 | 719 |
| słońce (godz.) | 0 | 0 | 0 | 0 | 0 | 0 |
| opad | 596 | 535 | 618 | 605 | 624 | 600 |
| wilgotność / widzialność | 105 | 92 | 124 | 124 | 130 | 126 |
| parametr | lip | sie | wrz | paź | lis | gru |
| Tmax | 734 | 733 | 717 | 738 | 719 | 714 |
| Tmin | 737 | 733 | 720 | 737 | 718 | 717 |
| słońce (godz.) | 0 | 0 | 0 | 0 | 0 | 0 |
| opad | 620 | 622 | 606 | 618 | 602 | 597 |
| wilgotność / widzialność | 123 | 114 | 114 | 113 | 130 | 104 |
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. |
