Number of days available for climatic review
Parameter | Jan | Feb | Mar | Apr | May | Jun |
Tmax | 86 | 82 | 86 | 91 | 82 | 83 |
Tmin | 85 | 82 | 88 | 93 | 82 | 86 |
Duration of sunshine | 0 | 0 | 0 | 0 | 0 | 0 |
Precipitation | 101 | 91 | 101 | 111 | 132 | 130 |
Humidity/Visibility | 87 | 81 | 87 | 101 | 115 | 114 |
Parameter | Jul | Aug | Sep | Oct | Nov | Dec |
Tmax | 85 | 89 | 81 | 83 | 80 | 86 |
Tmin | 86 | 87 | 84 | 83 | 77 | 89 |
Duration of sunshine | 0 | 0 | 0 | 0 | 0 | 0 |
Precipitation | 136 | 131 | 121 | 129 | 130 | 135 |
Humidity/Visibility | 116 | 118 | 112 | 110 | 106 | 118 |
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. |