Number of days available for climatic review
| parametr | sty | lut | mar | kwi | maj | cze |
| Tmax | 63 | 40 | 52 | 50 | 57 | 44 |
| Tmin | 69 | 52 | 55 | 53 | 61 | 54 |
| słońce (godz.) | 72 | 53 | 59 | 56 | 61 | 54 |
| opad | 4 | 5 | 5 | 5 | 3 | 5 |
| wilgotność / widzialność | 109 | 98 | 112 | 103 | 112 | 106 |
| parametr | lip | sie | wrz | paź | lis | gru |
| Tmax | 57 | 77 | 58 | 54 | 56 | 57 |
| Tmin | 57 | 71 | 56 | 54 | 55 | 57 |
| słońce (godz.) | 55 | 75 | 60 | 54 | 56 | 59 |
| opad | 11 | 20 | 8 | 5 | 28 | 10 |
| wilgotność / widzialność | 110 | 128 | 133 | 126 | 102 | 114 |
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. |
