Number of days available for climatic review
| parametr | sty | lut | mar | kwi | maj | cze |
| Tmax | 1095 | 1007 | 1111 | 1093 | 1140 | 1106 |
| Tmin | 1098 | 1010 | 1116 | 1095 | 1140 | 1109 |
| słońce (godz.) | 0 | 0 | 0 | 0 | 0 | 0 |
| opad | 713 | 646 | 713 | 710 | 748 | 722 |
| wilgotność / widzialność | 91 | 83 | 90 | 104 | 121 | 118 |
| parametr | lip | sie | wrz | paź | lis | gru |
| Tmax | 1141 | 1144 | 1108 | 1140 | 1105 | 1141 |
| Tmin | 1141 | 1146 | 1108 | 1141 | 1108 | 1142 |
| słońce (godz.) | 0 | 0 | 0 | 0 | 0 | 0 |
| opad | 747 | 746 | 720 | 743 | 720 | 752 |
| wilgotność / widzialność | 121 | 121 | 118 | 117 | 116 | 120 |
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. |
