Number of days available for climatic review
Parameter | Jan | Feb | Mar | Apr | May | Jun |
Tmax | 1112 | 1005 | 1113 | 1078 | 1114 | 1077 |
Tmin | 1115 | 1006 | 1115 | 1078 | 1113 | 1078 |
Duration of sunshine | 93 | 113 | 124 | 120 | 124 | 150 |
Precipitation | 186 | 170 | 186 | 181 | 186 | 180 |
Humidity/Visibility | 183 | 167 | 184 | 179 | 183 | 179 |
Parameter | Jul | Aug | Sep | Oct | Nov | Dec |
Tmax | 1111 | 1114 | 1107 | 1137 | 1106 | 1147 |
Tmin | 1115 | 1118 | 1107 | 1138 | 1108 | 1146 |
Duration of sunshine | 124 | 124 | 120 | 124 | 120 | 62 |
Precipitation | 186 | 192 | 212 | 215 | 210 | 219 |
Humidity/Visibility | 181 | 184 | 206 | 208 | 206 | 214 |
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. |