Number of days available for climatic review
Parameter | Jan | Feb | Mar | Apr | May | Jun |
Tmax | 178 | 159 | 167 | 168 | 182 | 178 |
Tmin | 179 | 159 | 170 | 165 | 181 | 176 |
Duration of sunshine | 0 | 0 | 0 | 0 | 0 | 0 |
Precipitation | 172 | 158 | 182 | 167 | 157 | 173 |
Humidity/Visibility | 178 | 160 | 170 | 170 | 181 | 176 |
Parameter | Jul | Aug | Sep | Oct | Nov | Dec |
Tmax | 171 | 180 | 186 | 202 | 202 | 206 |
Tmin | 174 | 182 | 190 | 206 | 207 | 207 |
Duration of sunshine | 0 | 0 | 0 | 0 | 0 | 0 |
Precipitation | 179 | 187 | 205 | 216 | 210 | 208 |
Humidity/Visibility | 172 | 180 | 187 | 205 | 204 | 205 |
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. |