Number of days available for climatic review
Parameter | Jan | Feb | Mar | Apr | May | Jun |
Tmax | 86 | 78 | 82 | 115 | 111 | 114 |
Tmin | 88 | 81 | 86 | 115 | 119 | 115 |
Duration of sunshine | 0 | 0 | 0 | 0 | 0 | 0 |
Precipitation | 98 | 93 | 102 | 127 | 123 | 126 |
Humidity/Visibility | 67 | 59 | 63 | 85 | 86 | 83 |
Parameter | Jul | Aug | Sep | Oct | Nov | Dec |
Tmax | 107 | 117 | 114 | 116 | 107 | 110 |
Tmin | 115 | 123 | 118 | 116 | 108 | 119 |
Duration of sunshine | 0 | 0 | 0 | 0 | 0 | 0 |
Precipitation | 130 | 130 | 120 | 123 | 129 | 129 |
Humidity/Visibility | 83 | 87 | 86 | 84 | 81 | 87 |
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. |