Number of days available for climatic review
| parametr | sty | lut | mar | kwi | maj | cze |
| Tmax | 1075 | 982 | 1085 | 1065 | 1101 | 1077 |
| Tmin | 1075 | 980 | 1084 | 1066 | 1103 | 1078 |
| słońce (godz.) | 248 | 169 | 248 | 210 | 310 | 300 |
| opad | 93 | 85 | 94 | 108 | 123 | 121 |
| wilgotność / widzialność | 92 | 84 | 92 | 104 | 121 | 118 |
| parametr | lip | sie | wrz | paź | lis | gru |
| Tmax | 1108 | 1102 | 1075 | 1108 | 1079 | 1109 |
| Tmin | 1109 | 1101 | 1076 | 1111 | 1079 | 1115 |
| słońce (godz.) | 310 | 310 | 240 | 279 | 240 | 248 |
| opad | 126 | 126 | 120 | 121 | 120 | 124 |
| wilgotność / widzialność | 119 | 110 | 118 | 117 | 119 | 123 |
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. |
