Number of days available for climatic review
| parametr | sty | lut | mar | kwi | maj | cze |
| Tmax | 1018 | 914 | 1009 | 1012 | 1043 | 1015 |
| Tmin | 1032 | 922 | 1016 | 1003 | 1044 | 1006 |
| słońce (godz.) | 0 | 0 | 0 | 0 | 0 | 0 |
| opad | 570 | 529 | 571 | 591 | 598 | 575 |
| wilgotność / widzialność | 83 | 75 | 80 | 107 | 114 | 114 |
| parametr | lip | sie | wrz | paź | lis | gru |
| Tmax | 1035 | 1042 | 1003 | 1027 | 1000 | 1068 |
| Tmin | 1041 | 1046 | 1008 | 1032 | 999 | 1074 |
| słońce (godz.) | 0 | 0 | 0 | 0 | 0 | 0 |
| opad | 596 | 598 | 578 | 589 | 581 | 604 |
| wilgotność / widzialność | 110 | 114 | 110 | 104 | 103 | 114 |
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. |
