Number of days available for climatic review
Parameter | Jan | Feb | Mar | Apr | May | Jun |
Tmax | 155 | 140 | 155 | 150 | 155 | 150 |
Tmin | 170 | 145 | 155 | 156 | 159 | 169 |
Duration of sunshine | 0 | 0 | 0 | 0 | 0 | 0 |
Precipitation | 62 | 57 | 62 | 60 | 71 | 85 |
Humidity/Visibility | 7 | 2 | 0 | 3 | 4 | 12 |
Parameter | Jul | Aug | Sep | Oct | Nov | Dec |
Tmax | 156 | 155 | 150 | 155 | 150 | 155 |
Tmin | 183 | 170 | 150 | 163 | 163 | 160 |
Duration of sunshine | 0 | 0 | 0 | 0 | 0 | 0 |
Precipitation | 90 | 94 | 89 | 81 | 90 | 93 |
Humidity/Visibility | 18 | 16 | 17 | 14 | 13 | 10 |
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. |