Number of days available for climatic review
Parameter | Jan | Feb | Mar | Apr | May | Jun |
Tmax | 847 | 832 | 926 | 895 | 904 | 896 |
Tmin | 851 | 827 | 924 | 891 | 906 | 892 |
Duration of sunshine | 248 | 254 | 279 | 210 | 279 | 300 |
Precipitation | 187 | 168 | 188 | 182 | 185 | 182 |
Humidity/Visibility | 182 | 163 | 181 | 175 | 180 | 175 |
Parameter | Jul | Aug | Sep | Oct | Nov | Dec |
Tmax | 923 | 925 | 917 | 939 | 914 | 949 |
Tmin | 915 | 922 | 917 | 935 | 912 | 952 |
Duration of sunshine | 279 | 248 | 210 | 279 | 270 | 248 |
Precipitation | 185 | 192 | 211 | 214 | 206 | 217 |
Humidity/Visibility | 181 | 179 | 201 | 204 | 198 | 207 |
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. |