Number of days available for climatic review
Parameter | Jan | Feb | Mar | Apr | May | Jun |
Tmax | 264 | 243 | 263 | 269 | 277 | 260 |
Tmin | 311 | 287 | 312 | 305 | 315 | 306 |
Duration of sunshine | 0 | 0 | 0 | 0 | 0 | 0 |
Precipitation | 68 | 57 | 68 | 82 | 103 | 97 |
Humidity/Visibility | 49 | 50 | 47 | 62 | 77 | 78 |
Parameter | Jul | Aug | Sep | Oct | Nov | Dec |
Tmax | 271 | 268 | 263 | 269 | 263 | 272 |
Tmin | 310 | 314 | 302 | 310 | 300 | 310 |
Duration of sunshine | 0 | 0 | 0 | 0 | 0 | 0 |
Precipitation | 102 | 103 | 95 | 89 | 101 | 113 |
Humidity/Visibility | 83 | 75 | 79 | 70 | 65 | 79 |
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. |