Number of days available for climatic review
| parametr | sty | lut | mar | kwi | maj | cze |
| Tmax | 82 | 68 | 78 | 80 | 83 | 68 |
| Tmin | 91 | 74 | 85 | 82 | 86 | 83 |
| słońce (godz.) | 0 | 0 | 0 | 0 | 0 | 0 |
| opad | 156 | 136 | 174 | 170 | 171 | 157 |
| wilgotność / widzialność | 125 | 113 | 124 | 109 | 113 | 122 |
| parametr | lip | sie | wrz | paź | lis | gru |
| Tmax | 78 | 72 | 74 | 79 | 82 | 84 |
| Tmin | 82 | 71 | 78 | 80 | 84 | 83 |
| słońce (godz.) | 0 | 0 | 0 | 0 | 0 | 0 |
| opad | 150 | 198 | 200 | 181 | 159 | 170 |
| wilgotność / widzialność | 95 | 115 | 145 | 138 | 123 | 134 |
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. |
