Number of days available for climatic review
Parameter | Jan | Feb | Mar | Apr | May | Jun |
Tmax | 185 | 167 | 183 | 178 | 185 | 178 |
Tmin | 186 | 168 | 186 | 179 | 186 | 179 |
Duration of sunshine | 176 | 155 | 176 | 166 | 181 | 171 |
Precipitation | 188 | 170 | 187 | 185 | 187 | 182 |
Humidity/Visibility | 184 | 165 | 184 | 177 | 183 | 177 |
Parameter | Jul | Aug | Sep | Oct | Nov | Dec |
Tmax | 180 | 186 | 205 | 210 | 207 | 214 |
Tmin | 185 | 187 | 209 | 212 | 209 | 214 |
Duration of sunshine | 173 | 176 | 196 | 177 | 166 | 163 |
Precipitation | 187 | 190 | 210 | 215 | 210 | 221 |
Humidity/Visibility | 183 | 183 | 205 | 209 | 205 | 214 |
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. |