Number of days available for climatic review
| parametr | sty | lut | mar | kwi | maj | cze |
| Tmax | 55 | 52 | 59 | 59 | 58 | 71 |
| Tmin | 62 | 57 | 62 | 58 | 58 | 70 |
| słońce (godz.) | 0 | 0 | 0 | 0 | 0 | 0 |
| opad | 93 | 87 | 93 | 91 | 95 | 104 |
| wilgotność / widzialność | 44 | 40 | 46 | 44 | 44 | 52 |
| parametr | lip | sie | wrz | paź | lis | gru |
| Tmax | 85 | 90 | 83 | 84 | 80 | 86 |
| Tmin | 89 | 92 | 88 | 87 | 79 | 91 |
| słońce (godz.) | 0 | 0 | 0 | 0 | 0 | 0 |
| opad | 128 | 128 | 122 | 122 | 124 | 124 |
| wilgotność / widzialność | 65 | 68 | 64 | 62 | 60 | 66 |
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. |
