Number of days available for climatic review
| parametr | sty | lut | mar | kwi | maj | cze |
| Tmax | 538 | 481 | 531 | 531 | 551 | 527 |
| Tmin | 548 | 500 | 550 | 532 | 552 | 539 |
| słońce (godz.) | 0 | 0 | 0 | 0 | 0 | 0 |
| opad | 96 | 97 | 97 | 106 | 101 | 115 |
| wilgotność / widzialność | 63 | 54 | 60 | 62 | 66 | 65 |
| parametr | lip | sie | wrz | paź | lis | gru |
| Tmax | 549 | 575 | 551 | 567 | 556 | 565 |
| Tmin | 571 | 582 | 567 | 576 | 558 | 581 |
| słońce (godz.) | 0 | 0 | 0 | 0 | 0 | 0 |
| opad | 131 | 132 | 123 | 124 | 130 | 129 |
| wilgotność / widzialność | 75 | 85 | 81 | 81 | 80 | 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. |
