Number of days available for climatic review
Parameter | Jan | Feb | Mar | Apr | May | Jun |
Tmax | 143 | 130 | 141 | 148 | 163 | 166 |
Tmin | 150 | 133 | 151 | 148 | 164 | 170 |
Duration of sunshine | 0 | 0 | 0 | 0 | 0 | 0 |
Precipitation | 157 | 140 | 157 | 159 | 187 | 181 |
Humidity/Visibility | 151 | 137 | 151 | 153 | 180 | 174 |
Parameter | Jul | Aug | Sep | Oct | Nov | Dec |
Tmax | 163 | 167 | 168 | 170 | 171 | 176 |
Tmin | 180 | 175 | 176 | 176 | 174 | 177 |
Duration of sunshine | 0 | 0 | 0 | 0 | 0 | 0 |
Precipitation | 187 | 188 | 180 | 186 | 183 | 188 |
Humidity/Visibility | 175 | 174 | 173 | 176 | 176 | 181 |
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. |