Number of days available for climatic review
| parametr | sty | lut | mar | kwi | maj | cze |
| Tmax | 710 | 642 | 712 | 711 | 743 | 719 |
| Tmin | 712 | 640 | 711 | 710 | 739 | 716 |
| słońce (godz.) | 0 | 0 | 0 | 0 | 0 | 0 |
| opad | 124 | 114 | 126 | 146 | 155 | 150 |
| wilgotność / widzialność | 123 | 111 | 122 | 142 | 153 | 149 |
| parametr | lip | sie | wrz | paź | lis | gru |
| Tmax | 741 | 742 | 718 | 734 | 718 | 742 |
| Tmin | 738 | 740 | 719 | 733 | 715 | 738 |
| słońce (godz.) | 0 | 0 | 0 | 0 | 0 | 0 |
| opad | 156 | 159 | 151 | 152 | 150 | 155 |
| wilgotność / widzialność | 153 | 150 | 148 | 148 | 147 | 153 |
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. |
