Number of days available for climatic review
Parameter | Jan | Feb | Mar | Apr | May | Jun |
Tmax | 182 | 163 | 184 | 177 | 180 | 172 |
Tmin | 185 | 165 | 181 | 177 | 186 | 174 |
Duration of sunshine | 0 | 0 | 0 | 0 | 0 | 0 |
Precipitation | 188 | 172 | 186 | 181 | 186 | 180 |
Humidity/Visibility | 173 | 155 | 169 | 173 | 182 | 169 |
Parameter | Jul | Aug | Sep | Oct | Nov | Dec |
Tmax | 183 | 159 | 198 | 205 | 203 | 213 |
Tmin | 181 | 165 | 202 | 208 | 205 | 214 |
Duration of sunshine | 0 | 0 | 0 | 0 | 0 | 0 |
Precipitation | 194 | 167 | 209 | 215 | 210 | 221 |
Humidity/Visibility | 166 | 141 | 195 | 194 | 190 | 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. |