Number of days available for climatic review
| parametr | sty | lut | mar | kwi | maj | cze |
| Tmax | 1022 | 912 | 1040 | 1007 | 1042 | 1008 |
| Tmin | 1024 | 917 | 1039 | 1034 | 1073 | 1033 |
| słońce (godz.) | 23 | 22 | 26 | 45 | 48 | 26 |
| opad | 162 | 144 | 173 | 167 | 161 | 150 |
| wilgotność / widzialność | 65 | 54 | 76 | 83 | 84 | 68 |
| parametr | lip | sie | wrz | paź | lis | gru |
| Tmax | 1033 | 1032 | 1008 | 1065 | 1038 | 1034 |
| Tmin | 1064 | 1063 | 1031 | 1053 | 958 | 1039 |
| słońce (godz.) | 10 | 17 | 21 | 20 | 0 | 19 |
| opad | 157 | 155 | 154 | 156 | 154 | 152 |
| wilgotność / widzialność | 64 | 61 | 69 | 78 | 74 | 78 |
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. |
