Number of days available for climatic review
Parameter | Jan | Feb | Mar | Apr | May | Jun |
Tmax | 119 | 107 | 119 | 139 | 150 | 144 |
Tmin | 119 | 106 | 119 | 141 | 148 | 143 |
Duration of sunshine | 0 | 0 | 0 | 0 | 0 | 0 |
Precipitation | 125 | 116 | 130 | 148 | 158 | 149 |
Humidity/Visibility | 122 | 110 | 120 | 142 | 150 | 145 |
Parameter | Jul | Aug | Sep | Oct | Nov | Dec |
Tmax | 147 | 146 | 143 | 143 | 142 | 147 |
Tmin | 140 | 143 | 142 | 144 | 144 | 145 |
Duration of sunshine | 0 | 0 | 0 | 0 | 0 | 0 |
Precipitation | 152 | 156 | 155 | 155 | 153 | 160 |
Humidity/Visibility | 147 | 148 | 144 | 146 | 146 | 152 |
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. |