Number of days available for climatic review
Parameter | Jan | Feb | Mar | Apr | May | Jun |
Tmax | 1122 | 1009 | 1115 | 1098 | 1137 | 1103 |
Tmin | 1123 | 1014 | 1109 | 1092 | 1135 | 1108 |
Duration of sunshine | 0 | 0 | 0 | 0 | 0 | 0 |
Precipitation | 713 | 627 | 713 | 713 | 745 | 720 |
Humidity/Visibility | 114 | 90 | 110 | 119 | 140 | 137 |
Parameter | Jul | Aug | Sep | Oct | Nov | Dec |
Tmax | 1143 | 1142 | 1101 | 1131 | 1098 | 1142 |
Tmin | 1140 | 1141 | 1102 | 1133 | 1102 | 1144 |
Duration of sunshine | 0 | 0 | 0 | 0 | 0 | 0 |
Precipitation | 734 | 745 | 717 | 727 | 694 | 717 |
Humidity/Visibility | 139 | 140 | 138 | 128 | 116 | 123 |
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. |