Number of days available for climatic review
Parameter | Jan | Feb | Mar | Apr | May | Jun |
Tmax | 134 | 115 | 128 | 121 | 126 | 129 |
Tmin | 99 | 97 | 93 | 102 | 113 | 110 |
Duration of sunshine | 0 | 0 | 0 | 0 | 0 | 0 |
Precipitation | 204 | 180 | 213 | 208 | 224 | 220 |
Humidity/Visibility | 110 | 99 | 104 | 96 | 109 | 104 |
Parameter | Jul | Aug | Sep | Oct | Nov | Dec |
Tmax | 116 | 79 | 108 | 124 | 122 | 122 |
Tmin | 110 | 71 | 91 | 101 | 99 | 92 |
Duration of sunshine | 0 | 0 | 0 | 0 | 0 | 0 |
Precipitation | 225 | 212 | 222 | 248 | 248 | 262 |
Humidity/Visibility | 102 | 71 | 97 | 120 | 113 | 117 |
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. |