Number of days available for climatic review
Parameter | Jan | Feb | Mar | Apr | May | Jun |
Tmax | 98 | 81 | 91 | 87 | 92 | 90 |
Tmin | 99 | 81 | 87 | 90 | 91 | 89 |
Duration of sunshine | 0 | 0 | 0 | 0 | 0 | 0 |
Precipitation | 161 | 143 | 155 | 152 | 155 | 150 |
Humidity/Visibility | 129 | 121 | 136 | 135 | 139 | 141 |
Parameter | Jul | Aug | Sep | Oct | Nov | Dec |
Tmax | 91 | 92 | 89 | 93 | 90 | 67 |
Tmin | 91 | 92 | 87 | 92 | 90 | 66 |
Duration of sunshine | 0 | 0 | 0 | 0 | 0 | 0 |
Precipitation | 161 | 186 | 183 | 182 | 179 | 161 |
Humidity/Visibility | 140 | 154 | 158 | 160 | 148 | 142 |
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. |