Number of days available for climatic review
| parametr | sty | lut | mar | kwi | maj | cze |
| Tmax | 765 | 687 | 766 | 747 | 773 | 754 |
| Tmin | 764 | 687 | 766 | 748 | 769 | 761 |
| słońce (godz.) | 0 | 0 | 0 | 0 | 0 | 0 |
| opad | 66 | 59 | 64 | 62 | 68 | 73 |
| wilgotność / widzialność | 55 | 51 | 58 | 56 | 60 | 67 |
| parametr | lip | sie | wrz | paź | lis | gru |
| Tmax | 798 | 787 | 773 | 797 | 762 | 796 |
| Tmin | 791 | 787 | 771 | 796 | 764 | 795 |
| słońce (godz.) | 0 | 0 | 0 | 0 | 0 | 0 |
| opad | 101 | 97 | 104 | 97 | 95 | 99 |
| wilgotność / widzialność | 83 | 76 | 78 | 80 | 69 | 86 |
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. |
