Number of days available for climatic review
Parameter | Jan | Feb | Mar | Apr | May | Jun |
Tmax | 1112 | 1037 | 1147 | 1123 | 1171 | 1139 |
Tmin | 1113 | 1036 | 1146 | 1124 | 1171 | 1138 |
Duration of sunshine | 245 | 222 | 307 | 338 | 368 | 353 |
Precipitation | 95 | 88 | 94 | 109 | 126 | 122 |
Humidity/Visibility | 91 | 83 | 91 | 103 | 122 | 119 |
Parameter | Jul | Aug | Sep | Oct | Nov | Dec |
Tmax | 1175 | 1150 | 1100 | 1146 | 1108 | 1147 |
Tmin | 1175 | 1149 | 1100 | 1146 | 1109 | 1147 |
Duration of sunshine | 367 | 339 | 330 | 307 | 263 | 270 |
Precipitation | 125 | 125 | 120 | 121 | 122 | 129 |
Humidity/Visibility | 118 | 120 | 118 | 117 | 117 | 121 |
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. |