Number of days available for climatic review
| parametr | sty | lut | mar | kwi | maj | cze |
| Tmax | 525 | 476 | 524 | 510 | 524 | 505 |
| Tmin | 524 | 476 | 526 | 508 | 526 | 505 |
| słońce (godz.) | 155 | 169 | 155 | 180 | 155 | 120 |
| opad | 93 | 85 | 93 | 90 | 94 | 91 |
| wilgotność / widzialność | 88 | 80 | 90 | 87 | 91 | 85 |
| parametr | lip | sie | wrz | paź | lis | gru |
| Tmax | 521 | 524 | 507 | 538 | 538 | 554 |
| Tmin | 521 | 524 | 505 | 531 | 520 | 554 |
| słońce (godz.) | 186 | 155 | 120 | 186 | 120 | 155 |
| opad | 93 | 95 | 90 | 106 | 120 | 126 |
| wilgotność / widzialność | 88 | 89 | 84 | 99 | 110 | 119 |
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. |
