Number of days available for climatic review
| parametr | sty | lut | mar | kwi | maj | cze |
| Tmax | 861 | 776 | 857 | 835 | 853 | 838 |
| Tmin | 861 | 777 | 854 | 836 | 854 | 838 |
| słońce (godz.) | 0 | 0 | 0 | 0 | 0 | 0 |
| opad | 99 | 85 | 99 | 108 | 126 | 120 |
| wilgotność / widzialność | 88 | 81 | 83 | 102 | 107 | 115 |
| parametr | lip | sie | wrz | paź | lis | gru |
| Tmax | 853 | 852 | 837 | 862 | 835 | 861 |
| Tmin | 858 | 851 | 836 | 861 | 832 | 863 |
| słońce (godz.) | 0 | 0 | 0 | 0 | 0 | 0 |
| opad | 127 | 129 | 120 | 124 | 123 | 128 |
| wilgotność / widzialność | 109 | 106 | 117 | 116 | 111 | 117 |
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. |
