Number of days available for climatic review
Parameter | Jan | Feb | Mar | Apr | May | Jun |
Tmax | 155 | 141 | 155 | 150 | 155 | 150 |
Tmin | 154 | 140 | 153 | 150 | 155 | 150 |
Duration of sunshine | 124 | 141 | 155 | 150 | 155 | 150 |
Precipitation | 155 | 141 | 156 | 150 | 155 | 150 |
Humidity/Visibility | 154 | 140 | 153 | 149 | 154 | 149 |
Parameter | Jul | Aug | Sep | Oct | Nov | Dec |
Tmax | 155 | 156 | 179 | 182 | 179 | 186 |
Tmin | 152 | 155 | 178 | 181 | 180 | 185 |
Duration of sunshine | 186 | 155 | 150 | 186 | 150 | 155 |
Precipitation | 156 | 159 | 181 | 183 | 180 | 186 |
Humidity/Visibility | 152 | 154 | 176 | 179 | 177 | 185 |
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. |