Number of days available for climatic review
| parametr | sty | lut | mar | kwi | maj | cze |
| Tmax | 1913 | 1730 | 1911 | 1854 | 1894 | 1847 |
| Tmin | 1914 | 1726 | 1914 | 1849 | 1897 | 1842 |
| słońce (godz.) | 0 | 0 | 0 | 0 | 0 | 0 |
| opad | 155 | 141 | 156 | 151 | 155 | 150 |
| wilgotność / widzialność | 153 | 139 | 153 | 148 | 153 | 147 |
| parametr | lip | sie | wrz | paź | lis | gru |
| Tmax | 1912 | 1906 | 1848 | 1943 | 1884 | 1942 |
| Tmin | 1916 | 1908 | 1852 | 1943 | 1887 | 1943 |
| słońce (godz.) | 0 | 0 | 0 | 0 | 0 | 0 |
| opad | 156 | 157 | 153 | 184 | 180 | 186 |
| wilgotność / widzialność | 152 | 151 | 148 | 179 | 173 | 184 |
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. |
