Number of days available for climatic review
Parameter | Jan | Feb | Mar | Apr | May | Jun |
Tmax | 1243 | 1144 | 1267 | 1227 | 1268 | 1225 |
Tmin | 1253 | 1144 | 1266 | 1225 | 1269 | 1227 |
Duration of sunshine | 274 | 244 | 302 | 292 | 307 | 294 |
Precipitation | 837 | 763 | 840 | 811 | 845 | 810 |
Humidity/Visibility | 181 | 165 | 183 | 176 | 183 | 177 |
Parameter | Jul | Aug | Sep | Oct | Nov | Dec |
Tmax | 1262 | 1264 | 1242 | 1291 | 1250 | 1290 |
Tmin | 1264 | 1269 | 1249 | 1293 | 1253 | 1298 |
Duration of sunshine | 301 | 303 | 326 | 295 | 327 | 331 |
Precipitation | 838 | 843 | 850 | 868 | 842 | 876 |
Humidity/Visibility | 181 | 182 | 203 | 208 | 204 | 209 |
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. |