Number of days available for climatic review
| parametr | sty | lut | mar | kwi | maj | cze |
| Tmax | 832 | 754 | 831 | 806 | 828 | 806 |
| Tmin | 829 | 748 | 832 | 801 | 834 | 803 |
| słońce (godz.) | 162 | 145 | 163 | 158 | 162 | 160 |
| opad | 837 | 761 | 841 | 811 | 839 | 812 |
| wilgotność / widzialność | 181 | 165 | 181 | 177 | 182 | 178 |
| parametr | lip | sie | wrz | paź | lis | gru |
| Tmax | 825 | 830 | 833 | 853 | 829 | 858 |
| Tmin | 830 | 835 | 832 | 859 | 836 | 855 |
| słońce (godz.) | 167 | 166 | 188 | 188 | 191 | 192 |
| opad | 838 | 843 | 844 | 870 | 840 | 876 |
| wilgotność / widzialność | 181 | 183 | 203 | 207 | 203 | 208 |
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. |
