Number of days available for climatic review
| parametr | sty | lut | mar | kwi | maj | cze |
| Tmax | 182 | 166 | 183 | 176 | 183 | 180 |
| Tmin | 185 | 166 | 184 | 176 | 183 | 179 |
| słońce (godz.) | 0 | 0 | 0 | 0 | 0 | 0 |
| opad | 186 | 171 | 187 | 183 | 186 | 180 |
| wilgotność / widzialność | 183 | 167 | 184 | 178 | 184 | 179 |
| parametr | lip | sie | wrz | paź | lis | gru |
| Tmax | 182 | 180 | 206 | 209 | 204 | 208 |
| Tmin | 184 | 182 | 203 | 209 | 201 | 216 |
| słońce (godz.) | 0 | 0 | 0 | 0 | 0 | 0 |
| opad | 188 | 192 | 212 | 215 | 210 | 217 |
| wilgotność / widzialność | 182 | 183 | 205 | 210 | 206 | 215 |
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. |
