Number of days available for climatic review
| parametr | sty | lut | mar | kwi | maj | cze |
| Tmax | 1152 | 1066 | 1178 | 1137 | 1172 | 1139 |
| Tmin | 1155 | 1066 | 1178 | 1139 | 1173 | 1138 |
| słońce (godz.) | 217 | 141 | 248 | 180 | 248 | 180 |
| opad | 190 | 171 | 189 | 183 | 187 | 180 |
| wilgotność / widzialność | 183 | 167 | 184 | 178 | 182 | 179 |
| parametr | lip | sie | wrz | paź | lis | gru |
| Tmax | 1176 | 1176 | 1158 | 1201 | 1167 | 1206 |
| Tmin | 1175 | 1180 | 1160 | 1201 | 1168 | 1206 |
| słońce (godz.) | 217 | 279 | 210 | 186 | 120 | 186 |
| opad | 186 | 190 | 215 | 215 | 211 | 222 |
| wilgotność / widzialność | 183 | 185 | 205 | 208 | 207 | 212 |
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. |
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