Number of days available for climatic review
| parametr | sty | lut | mar | kwi | maj | cze |
| Tmax | 775 | 697 | 774 | 746 | 772 | 747 |
| Tmin | 779 | 699 | 774 | 746 | 774 | 746 |
| słońce (godz.) | 0 | 0 | 0 | 0 | 0 | 0 |
| opad | 186 | 168 | 187 | 183 | 186 | 180 |
| wilgotność / widzialność | 183 | 166 | 185 | 175 | 183 | 178 |
| parametr | lip | sie | wrz | paź | lis | gru |
| Tmax | 773 | 773 | 776 | 794 | 776 | 805 |
| Tmin | 771 | 777 | 776 | 798 | 779 | 802 |
| słońce (godz.) | 0 | 0 | 0 | 0 | 0 | 0 |
| opad | 186 | 190 | 210 | 215 | 210 | 217 |
| wilgotność / widzialność | 184 | 184 | 206 | 209 | 207 | 213 |
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. |
