Number of days available for climatic review
Parameter | Jan | Feb | Mar | Apr | May | Jun |
Tmax | 113 | 103 | 111 | 129 | 141 | 131 |
Tmin | 116 | 104 | 118 | 131 | 150 | 143 |
Duration of sunshine | 0 | 0 | 0 | 0 | 0 | 0 |
Precipitation | 126 | 116 | 126 | 147 | 149 | 145 |
Humidity/Visibility | 107 | 102 | 117 | 140 | 149 | 138 |
Parameter | Jul | Aug | Sep | Oct | Nov | Dec |
Tmax | 132 | 141 | 133 | 135 | 131 | 140 |
Tmin | 151 | 155 | 142 | 145 | 148 | 149 |
Duration of sunshine | 0 | 0 | 0 | 0 | 0 | 0 |
Precipitation | 160 | 152 | 154 | 158 | 150 | 156 |
Humidity/Visibility | 139 | 143 | 135 | 138 | 134 | 138 |
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. |