Number of days available for climatic review
| parametr | sty | lut | mar | kwi | maj | cze |
| Tmax | 1185 | 1121 | 1238 | 1193 | 1208 | 1197 |
| Tmin | 1000 | 955 | 1053 | 1019 | 1043 | 1020 |
| słońce (godz.) | 0 | 0 | 0 | 0 | 0 | 0 |
| opad | 744 | 672 | 743 | 717 | 726 | 718 |
| wilgotność / widzialność | 184 | 166 | 184 | 176 | 166 | 175 |
| parametr | lip | sie | wrz | paź | lis | gru |
| Tmax | 1235 | 1236 | 1209 | 1261 | 1227 | 1267 |
| Tmin | 1055 | 1054 | 1001 | 1054 | 1020 | 1054 |
| słońce (godz.) | 0 | 0 | 0 | 0 | 0 | 0 |
| opad | 741 | 742 | 749 | 768 | 747 | 773 |
| wilgotność / widzialność | 182 | 184 | 205 | 208 | 205 | 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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