Number of days available for climatic review
| parametr | sty | lut | mar | kwi | maj | cze |
| Tmax | 924 | 861 | 948 | 920 | 942 | 919 |
| Tmin | 891 | 835 | 925 | 891 | 910 | 888 |
| słońce (godz.) | 124 | 141 | 155 | 150 | 155 | 150 |
| opad | 194 | 173 | 190 | 187 | 194 | 184 |
| wilgotność / widzialność | 172 | 155 | 170 | 166 | 170 | 162 |
| parametr | lip | sie | wrz | paź | lis | gru |
| Tmax | 949 | 945 | 944 | 976 | 950 | 948 |
| Tmin | 924 | 926 | 917 | 947 | 919 | 945 |
| słońce (godz.) | 155 | 124 | 150 | 155 | 150 | 155 |
| opad | 192 | 196 | 214 | 216 | 216 | 207 |
| wilgotność / widzialność | 171 | 171 | 196 | 196 | 190 | 181 |
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. |
Adam