Number of days available for climatic review
| parametr | sty | lut | mar | kwi | maj | cze |
| Tmax | 1033 | 953 | 1046 | 1015 | 1089 | 1045 |
| Tmin | 1043 | 955 | 1050 | 1012 | 1099 | 1049 |
| słońce (godz.) | 124 | 85 | 124 | 180 | 62 | 150 |
| opad | 106 | 94 | 100 | 102 | 101 | 99 |
| wilgotność / widzialność | 41 | 29 | 21 | 28 | 50 | 46 |
| parametr | lip | sie | wrz | paź | lis | gru |
| Tmax | 1105 | 1068 | 1040 | 1079 | 1085 | 1090 |
| Tmin | 1123 | 1067 | 1051 | 1083 | 1088 | 1086 |
| słońce (godz.) | 62 | 93 | 90 | 124 | 90 | 31 |
| opad | 109 | 118 | 106 | 116 | 147 | 156 |
| wilgotność / widzialność | 60 | 59 | 60 | 62 | 65 | 65 |
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. |
