Number of days available for climatic review
Parameter | Jan | Feb | Mar | Apr | May | Jun |
Tmax | 106 | 92 | 103 | 133 | 117 | 104 |
Tmin | 117 | 105 | 109 | 143 | 128 | 111 |
Duration of sunshine | 0 | 0 | 0 | 0 | 0 | 0 |
Precipitation | 124 | 116 | 125 | 150 | 151 | 150 |
Humidity/Visibility | 85 | 77 | 82 | 106 | 95 | 83 |
Parameter | Jul | Aug | Sep | Oct | Nov | Dec |
Tmax | 140 | 139 | 115 | 114 | 123 | 121 |
Tmin | 144 | 146 | 113 | 127 | 129 | 130 |
Duration of sunshine | 0 | 0 | 0 | 0 | 0 | 0 |
Precipitation | 157 | 157 | 152 | 150 | 149 | 154 |
Humidity/Visibility | 107 | 110 | 95 | 97 | 96 | 99 |
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. |