Number of days available for climatic review
Parameter | Jan | Feb | Mar | Apr | May | Jun |
Tmax | 1245 | 1142 | 1270 | 1229 | 1267 | 1208 |
Tmin | 1246 | 1140 | 1270 | 1229 | 1268 | 1207 |
Duration of sunshine | 371 | 334 | 402 | 418 | 465 | 449 |
Precipitation | 186 | 168 | 186 | 181 | 186 | 180 |
Humidity/Visibility | 184 | 167 | 185 | 179 | 185 | 179 |
Parameter | Jul | Aug | Sep | Oct | Nov | Dec |
Tmax | 1262 | 1270 | 1250 | 1294 | 1256 | 1302 |
Tmin | 1260 | 1272 | 1251 | 1295 | 1258 | 1301 |
Duration of sunshine | 426 | 404 | 418 | 426 | 387 | 402 |
Precipitation | 184 | 190 | 210 | 215 | 209 | 221 |
Humidity/Visibility | 181 | 185 | 207 | 210 | 206 | 215 |
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. |