Number of days available for climatic review
Parameter | Jan | Feb | Mar | Apr | May | Jun |
Tmax | 309 | 275 | 306 | 300 | 309 | 300 |
Tmin | 278 | 252 | 300 | 296 | 305 | 293 |
Duration of sunshine | 0 | 0 | 0 | 0 | 0 | 0 |
Precipitation | 217 | 196 | 217 | 210 | 217 | 210 |
Humidity/Visibility | 0 | 0 | 0 | 0 | 0 | 0 |
Parameter | Jul | Aug | Sep | Oct | Nov | Dec |
Tmax | 301 | 298 | 297 | 319 | 330 | 338 |
Tmin | 304 | 299 | 300 | 313 | 329 | 311 |
Duration of sunshine | 0 | 0 | 0 | 0 | 0 | 0 |
Precipitation | 217 | 217 | 210 | 217 | 210 | 217 |
Humidity/Visibility | 0 | 0 | 0 | 0 | 0 | 0 |
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. |