Number of days available for climatic review
Parameter | Jan | Feb | Mar | Apr | May | Jun |
Tmax | 62 | 65 | 77 | 52 | 63 | 63 |
Tmin | 77 | 74 | 79 | 63 | 74 | 69 |
Duration of sunshine | 0 | 0 | 0 | 0 | 0 | 0 |
Precipitation | 99 | 90 | 98 | 97 | 102 | 114 |
Humidity/Visibility | 68 | 72 | 80 | 62 | 69 | 69 |
Parameter | Jul | Aug | Sep | Oct | Nov | Dec |
Tmax | 77 | 61 | 53 | 54 | 50 | 46 |
Tmin | 74 | 58 | 53 | 58 | 53 | 52 |
Duration of sunshine | 0 | 0 | 0 | 0 | 0 | 0 |
Precipitation | 132 | 129 | 119 | 114 | 138 | 139 |
Humidity/Visibility | 90 | 102 | 86 | 93 | 89 | 85 |
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. |