Number of days available for climatic review
Parameter | Jan | Feb | Mar | Apr | May | Jun |
Tmax | 102 | 58 | 58 | 77 | 67 | 59 |
Tmin | 100 | 53 | 55 | 75 | 68 | 58 |
Duration of sunshine | 0 | 0 | 0 | 0 | 0 | 0 |
Precipitation | 126 | 117 | 129 | 149 | 151 | 156 |
Humidity/Visibility | 87 | 71 | 85 | 99 | 108 | 105 |
Parameter | Jul | Aug | Sep | Oct | Nov | Dec |
Tmax | 57 | 61 | 59 | 58 | 52 | 53 |
Tmin | 59 | 58 | 58 | 59 | 54 | 58 |
Duration of sunshine | 0 | 0 | 0 | 0 | 0 | 0 |
Precipitation | 161 | 158 | 151 | 151 | 159 | 163 |
Humidity/Visibility | 109 | 109 | 105 | 102 | 98 | 102 |
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. |