Number of days available for climatic review
| parametr | sty | lut | mar | kwi | maj | cze |
| Tmax | 1170 | 1065 | 1175 | 1169 | 1204 | 1170 |
| Tmin | 1169 | 1068 | 1177 | 1166 | 1204 | 1166 |
| słońce (godz.) | 217 | 197 | 248 | 240 | 248 | 270 |
| opad | 97 | 88 | 95 | 124 | 125 | 121 |
| wilgotność / widzialność | 91 | 82 | 90 | 117 | 120 | 118 |
| parametr | lip | sie | wrz | paź | lis | gru |
| Tmax | 1204 | 1205 | 1165 | 1204 | 1170 | 1206 |
| Tmin | 1206 | 1203 | 1167 | 1203 | 1164 | 1204 |
| słońce (godz.) | 217 | 217 | 270 | 279 | 240 | 248 |
| opad | 127 | 126 | 120 | 122 | 121 | 129 |
| wilgotność / widzialność | 122 | 121 | 117 | 116 | 118 | 122 |
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. |
