Number of days available for climatic review
| parametr | sty | lut | mar | kwi | maj | cze |
| Tmax | 79 | 71 | 97 | 106 | 94 | 89 |
| Tmin | 85 | 74 | 100 | 106 | 111 | 96 |
| słońce (godz.) | 0 | 0 | 0 | 0 | 0 | 0 |
| opad | 150 | 150 | 176 | 187 | 167 | 179 |
| wilgotność / widzialność | 74 | 62 | 84 | 91 | 91 | 96 |
| parametr | lip | sie | wrz | paź | lis | gru |
| Tmax | 81 | 75 | 86 | 80 | 81 | 82 |
| Tmin | 78 | 80 | 83 | 73 | 75 | 82 |
| słońce (godz.) | 0 | 0 | 0 | 0 | 0 | 0 |
| opad | 188 | 205 | 193 | 199 | 208 | 212 |
| wilgotność / widzialność | 87 | 89 | 87 | 88 | 86 | 93 |
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. |
