Number of days available for climatic review
Parameter | Jan | Feb | Mar | Apr | May | Jun |
Tmax | 828 | 749 | 832 | 805 | 827 | 804 |
Tmin | 831 | 752 | 833 | 808 | 835 | 806 |
Duration of sunshine | 161 | 148 | 157 | 149 | 166 | 156 |
Precipitation | 188 | 170 | 191 | 184 | 188 | 180 |
Humidity/Visibility | 182 | 166 | 183 | 178 | 183 | 177 |
Parameter | Jul | Aug | Sep | Oct | Nov | Dec |
Tmax | 830 | 832 | 833 | 852 | 822 | 858 |
Tmin | 834 | 835 | 834 | 860 | 831 | 867 |
Duration of sunshine | 163 | 161 | 184 | 193 | 188 | 191 |
Precipitation | 186 | 194 | 211 | 215 | 216 | 223 |
Humidity/Visibility | 181 | 183 | 204 | 208 | 201 | 211 |
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. |