Number of days available for climatic review
Parameter | Jan | Feb | Mar | Apr | May | Jun |
Tmax | 989 | 868 | 960 | 945 | 991 | 959 |
Tmin | 988 | 866 | 961 | 952 | 996 | 982 |
Duration of sunshine | 275 | 280 | 310 | 290 | 309 | 377 |
Precipitation | 120 | 113 | 84 | 78 | 97 | 92 |
Humidity/Visibility | 44 | 13 | 25 | 48 | 67 | 65 |
Parameter | Jul | Aug | Sep | Oct | Nov | Dec |
Tmax | 991 | 990 | 957 | 991 | 952 | 998 |
Tmin | 1014 | 1020 | 986 | 1016 | 983 | 1021 |
Duration of sunshine | 330 | 338 | 351 | 391 | 315 | 364 |
Precipitation | 96 | 95 | 91 | 90 | 91 | 115 |
Humidity/Visibility | 67 | 68 | 65 | 67 | 63 | 71 |
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. |