Number of days available for climatic review
| parametr | sty | lut | mar | kwi | maj | cze |
| Tmax | 614 | 552 | 610 | 599 | 644 | 624 |
| Tmin | 529 | 477 | 528 | 510 | 529 | 511 |
| słońce (godz.) | 0 | 0 | 0 | 0 | 0 | 0 |
| opad | 598 | 540 | 594 | 594 | 627 | 606 |
| wilgotność / widzialność | 57 | 49 | 53 | 62 | 82 | 80 |
| parametr | lip | sie | wrz | paź | lis | gru |
| Tmax | 647 | 642 | 621 | 639 | 625 | 644 |
| Tmin | 531 | 531 | 510 | 528 | 510 | 532 |
| słońce (godz.) | 0 | 0 | 0 | 0 | 0 | 0 |
| opad | 632 | 637 | 617 | 621 | 608 | 106 |
| wilgotność / widzialność | 84 | 82 | 74 | 77 | 82 | 83 |
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. |
