Number of days available for climatic review
| parametr | sty | lut | mar | kwi | maj | cze |
| Tmax | 960 | 868 | 959 | 926 | 970 | 946 |
| Tmin | 961 | 867 | 959 | 930 | 972 | 956 |
| słońce (godz.) | 0 | 0 | 0 | 0 | 0 | 0 |
| opad | 31 | 30 | 31 | 30 | 44 | 60 |
| wilgotność / widzialność | 30 | 27 | 29 | 29 | 41 | 58 |
| parametr | lip | sie | wrz | paź | lis | gru |
| Tmax | 980 | 968 | 937 | 984 | 956 | 983 |
| Tmin | 980 | 968 | 938 | 983 | 952 | 985 |
| słońce (godz.) | 0 | 0 | 0 | 0 | 0 | 0 |
| opad | 67 | 70 | 66 | 70 | 102 | 83 |
| wilgotność / widzialność | 54 | 37 | 39 | 53 | 54 | 54 |
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. |
