Number of days available for climatic review
| parametr | sty | lut | mar | kwi | maj | cze |
| Tmax | 86 | 85 | 90 | 101 | 122 | 114 |
| Tmin | 90 | 80 | 91 | 105 | 115 | 117 |
| słońce (godz.) | 0 | 0 | 0 | 0 | 0 | 0 |
| opad | 96 | 86 | 95 | 112 | 131 | 123 |
| wilgotność / widzialność | 89 | 82 | 90 | 102 | 120 | 116 |
| parametr | lip | sie | wrz | paź | lis | gru |
| Tmax | 116 | 117 | 115 | 115 | 111 | 116 |
| Tmin | 115 | 116 | 113 | 114 | 111 | 120 |
| słońce (godz.) | 0 | 0 | 0 | 0 | 0 | 0 |
| opad | 130 | 130 | 126 | 126 | 124 | 129 |
| wilgotność / widzialność | 121 | 118 | 115 | 114 | 114 | 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. |
