Number of days available for climatic review
| parametr | sty | lut | mar | kwi | maj | cze |
| Tmax | 58 | 54 | 59 | 87 | 86 | 88 |
| Tmin | 61 | 58 | 59 | 88 | 91 | 89 |
| słońce (godz.) | 0 | 0 | 0 | 0 | 0 | 0 |
| opad | 95 | 85 | 95 | 123 | 128 | 121 |
| wilgotność / widzialność | 44 | 41 | 44 | 64 | 65 | 64 |
| parametr | lip | sie | wrz | paź | lis | gru |
| Tmax | 84 | 88 | 86 | 84 | 76 | 85 |
| Tmin | 87 | 93 | 86 | 88 | 78 | 88 |
| słońce (godz.) | 0 | 0 | 0 | 0 | 0 | 0 |
| opad | 128 | 128 | 125 | 122 | 125 | 129 |
| wilgotność / widzialność | 64 | 67 | 64 | 62 | 59 | 65 |
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. |
