Number of days available for climatic review
| parametr | sty | lut | mar | kwi | maj | cze |
| Tmax | 478 | 451 | 504 | 490 | 505 | 489 |
| Tmin | 483 | 457 | 507 | 498 | 511 | 487 |
| słońce (godz.) | 0 | 0 | 0 | 0 | 0 | 0 |
| opad | 93 | 85 | 95 | 109 | 124 | 120 |
| wilgotność / widzialność | 92 | 84 | 92 | 104 | 123 | 119 |
| parametr | lip | sie | wrz | paź | lis | gru |
| Tmax | 502 | 499 | 487 | 518 | 513 | 529 |
| Tmin | 508 | 499 | 484 | 526 | 513 | 534 |
| słońce (godz.) | 0 | 0 | 0 | 0 | 0 | 0 |
| opad | 126 | 127 | 120 | 122 | 120 | 124 |
| wilgotność / widzialność | 122 | 122 | 118 | 117 | 118 | 124 |
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. |
