Number of days available for climatic review
Parameter | Jan | Feb | Mar | Apr | May | Jun |
Tmax | 71 | 53 | 52 | 67 | 80 | 67 |
Tmin | 75 | 64 | 55 | 86 | 73 | 63 |
Duration of sunshine | 0 | 0 | 0 | 0 | 0 | 0 |
Precipitation | 153 | 130 | 159 | 174 | 220 | 203 |
Humidity/Visibility | 67 | 60 | 59 | 72 | 78 | 76 |
Parameter | Jul | Aug | Sep | Oct | Nov | Dec |
Tmax | 50 | 50 | 54 | 49 | 58 | 58 |
Tmin | 65 | 55 | 62 | 75 | 76 | 71 |
Duration of sunshine | 0 | 0 | 0 | 0 | 0 | 0 |
Precipitation | 187 | 193 | 176 | 167 | 148 | 163 |
Humidity/Visibility | 76 | 72 | 80 | 82 | 72 | 78 |
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. |