Number of days available for climatic review
Parameter | Jan | Feb | Mar | Apr | May | Jun |
Tmax | 57 | 55 | 60 | 55 | 57 | 70 |
Tmin | 62 | 57 | 61 | 58 | 61 | 72 |
Duration of sunshine | 0 | 0 | 0 | 0 | 0 | 0 |
Precipitation | 93 | 85 | 95 | 90 | 96 | 106 |
Humidity/Visibility | 45 | 41 | 45 | 42 | 44 | 51 |
Parameter | Jul | Aug | Sep | Oct | Nov | Dec |
Tmax | 84 | 89 | 83 | 86 | 80 | 85 |
Tmin | 89 | 93 | 89 | 87 | 79 | 91 |
Duration of sunshine | 0 | 0 | 0 | 0 | 0 | 0 |
Precipitation | 130 | 128 | 120 | 123 | 126 | 127 |
Humidity/Visibility | 62 | 67 | 64 | 63 | 59 | 66 |
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. |