Number of days available for climatic review
Parameter | Jan | Feb | Mar | Apr | May | Jun |
Tmax | 147 | 127 | 123 | 117 | 123 | 118 |
Tmin | 148 | 131 | 124 | 118 | 124 | 120 |
Duration of sunshine | 0 | 0 | 0 | 0 | 0 | 0 |
Precipitation | 155 | 144 | 157 | 151 | 155 | 156 |
Humidity/Visibility | 145 | 130 | 145 | 138 | 145 | 142 |
Parameter | Jul | Aug | Sep | Oct | Nov | Dec |
Tmax | 119 | 143 | 141 | 138 | 131 | 141 |
Tmin | 121 | 149 | 142 | 133 | 140 | 147 |
Duration of sunshine | 0 | 0 | 0 | 0 | 0 | 0 |
Precipitation | 155 | 188 | 182 | 185 | 183 | 186 |
Humidity/Visibility | 141 | 169 | 169 | 162 | 165 | 177 |
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. |