Number of days available for climatic review
| parametr | sty | lut | mar | kwi | maj | cze |
| Tmax | 453 | 407 | 457 | 447 | 461 | 454 |
| Tmin | 460 | 411 | 462 | 449 | 461 | 460 |
| słońce (godz.) | 0 | 0 | 0 | 0 | 0 | 0 |
| opad | 64 | 59 | 62 | 62 | 69 | 73 |
| wilgotność / widzialność | 57 | 50 | 59 | 56 | 56 | 66 |
| parametr | lip | sie | wrz | paź | lis | gru |
| Tmax | 485 | 478 | 475 | 488 | 463 | 484 |
| Tmin | 480 | 478 | 472 | 488 | 466 | 492 |
| słońce (godz.) | 0 | 0 | 0 | 0 | 0 | 0 |
| opad | 98 | 94 | 102 | 99 | 92 | 99 |
| wilgotność / widzialność | 85 | 75 | 79 | 79 | 73 | 88 |
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. |
