Number of days available for climatic review
| parametr | sty | lut | mar | kwi | maj | cze |
| Tmax | 100 | 94 | 126 | 111 | 119 | 105 |
| Tmin | 139 | 125 | 136 | 113 | 115 | 110 |
| słońce (godz.) | 0 | 0 | 0 | 0 | 0 | 0 |
| opad | 171 | 152 | 168 | 169 | 173 | 152 |
| wilgotność / widzialność | 134 | 121 | 139 | 135 | 145 | 137 |
| parametr | lip | sie | wrz | paź | lis | gru |
| Tmax | 112 | 139 | 123 | 91 | 109 | 105 |
| Tmin | 110 | 135 | 121 | 99 | 109 | 103 |
| słońce (godz.) | 0 | 2 | 10 | 0 | 0 | 0 |
| opad | 175 | 164 | 191 | 207 | 194 | 208 |
| wilgotność / widzialność | 142 | 144 | 150 | 154 | 164 | 162 |
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. |
