Number of days available for climatic review
| parametr | sty | lut | mar | kwi | maj | cze |
| Tmax | 2145 | 1963 | 2168 | 2099 | 2159 | 2099 |
| Tmin | 2145 | 1962 | 2170 | 2099 | 2160 | 2099 |
| słońce (godz.) | 371 | 336 | 401 | 418 | 465 | 449 |
| opad | 186 | 169 | 188 | 181 | 186 | 180 |
| wilgotność / widzialność | 184 | 168 | 184 | 179 | 184 | 179 |
| parametr | lip | sie | wrz | paź | lis | gru |
| Tmax | 2165 | 2168 | 2118 | 2194 | 2126 | 2201 |
| Tmin | 2164 | 2172 | 2121 | 2196 | 2127 | 2201 |
| słońce (godz.) | 427 | 405 | 418 | 426 | 387 | 402 |
| opad | 184 | 190 | 212 | 215 | 210 | 217 |
| wilgotność / widzialność | 181 | 185 | 206 | 210 | 207 | 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. |
