Number of days available for climatic review
| parametr | sty | lut | mar | kwi | maj | cze |
| Tmax | 398 | 362 | 397 | 385 | 401 | 385 |
| Tmin | 399 | 358 | 398 | 388 | 400 | 387 |
| słońce (godz.) | 0 | 0 | 0 | 0 | 0 | 0 |
| opad | 70 | 64 | 84 | 83 | 125 | 110 |
| wilgotność / widzialność | 57 | 54 | 50 | 41 | 59 | 75 |
| parametr | lip | sie | wrz | paź | lis | gru |
| Tmax | 400 | 389 | 376 | 400 | 380 | 397 |
| Tmin | 402 | 392 | 378 | 397 | 386 | 395 |
| słońce (godz.) | 0 | 0 | 0 | 0 | 0 | 0 |
| opad | 99 | 111 | 104 | 103 | 138 | 124 |
| wilgotność / widzialność | 54 | 44 | 75 | 82 | 82 | 81 |
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. |
