Number of days available for climatic review
| parametr | sty | lut | mar | kwi | maj | cze |
| Tmax | 77 | 64 | 71 | 110 | 118 | 96 |
| Tmin | 85 | 82 | 85 | 113 | 119 | 102 |
| słońce (godz.) | 0 | 0 | 0 | 0 | 0 | 0 |
| opad | 97 | 97 | 101 | 130 | 131 | 131 |
| wilgotność / widzialność | 64 | 55 | 61 | 83 | 87 | 76 |
| parametr | lip | sie | wrz | paź | lis | gru |
| Tmax | 99 | 110 | 109 | 108 | 103 | 109 |
| Tmin | 104 | 122 | 117 | 112 | 106 | 118 |
| słońce (godz.) | 0 | 0 | 0 | 0 | 0 | 0 |
| opad | 136 | 131 | 121 | 127 | 131 | 135 |
| wilgotność / widzialność | 79 | 86 | 84 | 82 | 79 | 85 |
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. |
