Number of days available for climatic review
| parametr | sty | lut | mar | kwi | maj | cze |
| Tmax | 1426 | 1288 | 1426 | 1380 | 1426 | 1380 |
| Tmin | 1426 | 1288 | 1426 | 1380 | 1426 | 1380 |
| słońce (godz.) | 248 | 226 | 248 | 270 | 310 | 240 |
| opad | 36 | 30 | 40 | 31 | 32 | 36 |
| wilgotność / widzialność | 29 | 27 | 28 | 29 | 32 | 33 |
| parametr | lip | sie | wrz | paź | lis | gru |
| Tmax | 1426 | 1426 | 1380 | 1426 | 1380 | 1426 |
| Tmin | 1426 | 1426 | 1380 | 1426 | 1380 | 1426 |
| słońce (godz.) | 310 | 279 | 300 | 310 | 240 | 248 |
| opad | 36 | 38 | 36 | 36 | 36 | 53 |
| wilgotność / widzialność | 31 | 28 | 29 | 28 | 58 | 46 |
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. |
