Number of days available for climatic review
Parameter | Jan | Feb | Mar | Apr | May | Jun |
Tmax | 85 | 72 | 82 | 96 | 103 | 103 |
Tmin | 79 | 78 | 78 | 65 | 80 | 58 |
Duration of sunshine | 0 | 0 | 0 | 0 | 0 | 0 |
Precipitation | 51 | 44 | 52 | 53 | 65 | 54 |
Humidity/Visibility | 87 | 79 | 84 | 97 | 105 | 110 |
Parameter | Jul | Aug | Sep | Oct | Nov | Dec |
Tmax | 94 | 105 | 105 | 97 | 101 | 102 |
Tmin | 77 | 83 | 84 | 85 | 106 | 111 |
Duration of sunshine | 0 | 0 | 0 | 0 | 0 | 0 |
Precipitation | 63 | 45 | 47 | 62 | 66 | 71 |
Humidity/Visibility | 105 | 110 | 107 | 105 | 102 | 111 |
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. |