Number of days available for climatic review
Parameter | Jan | Feb | Mar | Apr | May | Jun |
Tmax | 71 | 67 | 85 | 91 | 106 | 85 |
Tmin | 42 | 53 | 60 | 83 | 80 | 69 |
Duration of sunshine | 0 | 0 | 0 | 0 | 0 | 0 |
Precipitation | 182 | 149 | 171 | 194 | 191 | 203 |
Humidity/Visibility | 64 | 71 | 81 | 89 | 95 | 81 |
Parameter | Jul | Aug | Sep | Oct | Nov | Dec |
Tmax | 83 | 73 | 91 | 85 | 76 | 74 |
Tmin | 68 | 63 | 84 | 91 | 53 | 58 |
Duration of sunshine | 0 | 0 | 0 | 0 | 0 | 0 |
Precipitation | 197 | 199 | 213 | 188 | 181 | 216 |
Humidity/Visibility | 79 | 80 | 89 | 95 | 71 | 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. |