Number of days available for climatic review
| parametr | sty | lut | mar | kwi | maj | cze |
| Tmax | 679 | 615 | 681 | 656 | 681 | 657 |
| Tmin | 681 | 614 | 681 | 659 | 681 | 656 |
| słońce (godz.) | 61 | 54 | 48 | 39 | 37 | 39 |
| opad | 589 | 532 | 589 | 570 | 589 | 570 |
| wilgotność / widzialność | 0 | 0 | 0 | 0 | 0 | 0 |
| parametr | lip | sie | wrz | paź | lis | gru |
| Tmax | 670 | 682 | 655 | 687 | 660 | 683 |
| Tmin | 672 | 681 | 657 | 686 | 660 | 683 |
| słońce (godz.) | 26 | 28 | 36 | 35 | 38 | 53 |
| opad | 589 | 589 | 570 | 589 | 570 | 589 |
| wilgotność / widzialność | 0 | 0 | 0 | 0 | 0 | 0 |
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. |
