Number of days available for climatic review
Parameter | Jan | Feb | Mar | Apr | May | Jun |
Tmax | 175 | 160 | 181 | 169 | 182 | 157 |
Tmin | 180 | 159 | 181 | 170 | 177 | 161 |
Duration of sunshine | 0 | 0 | 0 | 0 | 0 | 0 |
Precipitation | 188 | 174 | 194 | 185 | 192 | 188 |
Humidity/Visibility | 180 | 162 | 179 | 172 | 179 | 162 |
Parameter | Jul | Aug | Sep | Oct | Nov | Dec |
Tmax | 175 | 178 | 201 | 198 | 199 | 210 |
Tmin | 178 | 179 | 205 | 206 | 199 | 212 |
Duration of sunshine | 0 | 0 | 0 | 0 | 0 | 0 |
Precipitation | 194 | 192 | 212 | 217 | 214 | 223 |
Humidity/Visibility | 176 | 181 | 201 | 204 | 202 | 208 |
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. |