Number of days available for climatic review
| parametr | sty | lut | mar | kwi | maj | cze |
| Tmax | 1164 | 1066 | 1177 | 1139 | 1176 | 1153 |
| Tmin | 1165 | 1066 | 1176 | 1140 | 1175 | 1152 |
| słońce (godz.) | 248 | 198 | 186 | 210 | 310 | 270 |
| opad | 95 | 85 | 95 | 93 | 93 | 103 |
| wilgotność / widzialność | 91 | 83 | 91 | 88 | 92 | 102 |
| parametr | lip | sie | wrz | paź | lis | gru |
| Tmax | 1206 | 1208 | 1164 | 1203 | 1167 | 1207 |
| Tmin | 1204 | 1208 | 1163 | 1203 | 1168 | 1208 |
| słońce (godz.) | 217 | 248 | 300 | 310 | 240 | 279 |
| opad | 127 | 127 | 120 | 122 | 120 | 124 |
| wilgotność / widzialność | 123 | 122 | 117 | 117 | 117 | 124 |
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. |
