Number of days available for climatic review
Parameter | Jan | Feb | Mar | Apr | May | Jun |
Tmax | 117 | 79 | 78 | 78 | 80 | 83 |
Tmin | 119 | 82 | 80 | 86 | 80 | 87 |
Duration of sunshine | 0 | 0 | 0 | 0 | 0 | 0 |
Precipitation | 126 | 118 | 141 | 155 | 165 | 156 |
Humidity/Visibility | 119 | 108 | 109 | 129 | 142 | 143 |
Parameter | Jul | Aug | Sep | Oct | Nov | Dec |
Tmax | 81 | 57 | 48 | 58 | 56 | 52 |
Tmin | 91 | 63 | 53 | 58 | 56 | 51 |
Duration of sunshine | 0 | 0 | 0 | 0 | 0 | 0 |
Precipitation | 161 | 165 | 166 | 161 | 159 | 167 |
Humidity/Visibility | 142 | 143 | 136 | 140 | 119 | 139 |
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. |