Number of days available for climatic review
Parameter | Jan | Feb | Mar | Apr | May | Jun |
Tmax | 1251 | 1146 | 1269 | 1228 | 1261 | 1228 |
Tmin | 1249 | 1147 | 1268 | 1225 | 1262 | 1229 |
Duration of sunshine | 430 | 414 | 399 | 441 | 432 | 476 |
Precipitation | 186 | 170 | 191 | 181 | 186 | 182 |
Humidity/Visibility | 184 | 166 | 184 | 179 | 184 | 179 |
Parameter | Jul | Aug | Sep | Oct | Nov | Dec |
Tmax | 1264 | 1267 | 1246 | 1285 | 1250 | 1291 |
Tmin | 1268 | 1272 | 1246 | 1291 | 1255 | 1297 |
Duration of sunshine | 491 | 497 | 506 | 448 | 412 | 486 |
Precipitation | 186 | 192 | 214 | 217 | 212 | 225 |
Humidity/Visibility | 182 | 184 | 205 | 206 | 204 | 211 |
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. |