Number of days available for climatic review
Parameter | Jan | Feb | Mar | Apr | May | Jun |
Tmax | 73 | 67 | 74 | 51 | 55 | 38 |
Tmin | 90 | 74 | 82 | 65 | 72 | 62 |
Duration of sunshine | 0 | 0 | 0 | 0 | 0 | 0 |
Precipitation | 127 | 116 | 130 | 138 | 157 | 141 |
Humidity/Visibility | 86 | 86 | 94 | 97 | 111 | 95 |
Parameter | Jul | Aug | Sep | Oct | Nov | Dec |
Tmax | 54 | 35 | 24 | 23 | 23 | 21 |
Tmin | 77 | 63 | 52 | 55 | 52 | 45 |
Duration of sunshine | 0 | 0 | 0 | 0 | 0 | 0 |
Precipitation | 153 | 161 | 148 | 143 | 160 | 166 |
Humidity/Visibility | 104 | 112 | 98 | 106 | 89 | 95 |
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. |