Number of days available for climatic review
| parametr | sty | lut | mar | kwi | maj | cze |
| Tmax | 1167 | 1062 | 1166 | 1124 | 1168 | 1130 |
| Tmin | 1126 | 1037 | 1140 | 1094 | 1140 | 1105 |
| słońce (godz.) | 0 | 0 | 0 | 0 | 0 | 0 |
| opad | 186 | 169 | 186 | 180 | 187 | 179 |
| wilgotność / widzialność | 162 | 149 | 165 | 154 | 162 | 158 |
| parametr | lip | sie | wrz | paź | lis | gru |
| Tmax | 1166 | 1168 | 1161 | 1198 | 1166 | 1178 |
| Tmin | 1141 | 1137 | 1133 | 1164 | 1129 | 1171 |
| słońce (godz.) | 0 | 0 | 0 | 0 | 0 | 0 |
| opad | 187 | 187 | 210 | 215 | 212 | 192 |
| wilgotność / widzialność | 162 | 163 | 189 | 189 | 183 | 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. |
