Number of days available for climatic review
Parameter | Jan | Feb | Mar | Apr | May | Jun |
Tmax | 56 | 61 | 81 | 86 | 119 | 105 |
Tmin | 59 | 65 | 88 | 91 | 119 | 100 |
Duration of sunshine | 0 | 0 | 0 | 0 | 0 | 0 |
Precipitation | 35 | 34 | 37 | 37 | 34 | 12 |
Humidity/Visibility | 88 | 79 | 90 | 89 | 118 | 106 |
Parameter | Jul | Aug | Sep | Oct | Nov | Dec |
Tmax | 88 | 86 | 96 | 83 | 55 | 54 |
Tmin | 93 | 87 | 102 | 90 | 61 | 55 |
Duration of sunshine | 0 | 0 | 0 | 0 | 0 | 0 |
Precipitation | 2 | 6 | 3 | 6 | 31 | 32 |
Humidity/Visibility | 90 | 88 | 100 | 92 | 61 | 56 |
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. |