Number of days available for climatic review
Parameter | Jan | Feb | Mar | Apr | May | Jun |
Tmax | 836 | 756 | 834 | 780 | 804 | 780 |
Tmin | 794 | 708 | 795 | 780 | 806 | 779 |
Duration of sunshine | 140 | 118 | 140 | 131 | 146 | 143 |
Precipitation | 185 | 169 | 187 | 153 | 155 | 150 |
Humidity/Visibility | 153 | 139 | 163 | 149 | 153 | 148 |
Parameter | Jul | Aug | Sep | Oct | Nov | Dec |
Tmax | 801 | 806 | 806 | 804 | 778 | 827 |
Tmin | 804 | 808 | 809 | 805 | 780 | 816 |
Duration of sunshine | 143 | 149 | 166 | 147 | 144 | 164 |
Precipitation | 157 | 159 | 180 | 157 | 150 | 177 |
Humidity/Visibility | 153 | 153 | 176 | 151 | 148 | 163 |
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. |