Number of days available for climatic review
Parameter | Jan | Feb | Mar | Apr | May | Jun |
Tmax | 1103 | 1019 | 1142 | 1126 | 1173 | 1129 |
Tmin | 1102 | 1017 | 1141 | 1127 | 1171 | 1131 |
Duration of sunshine | 0 | 0 | 0 | 0 | 0 | 0 |
Precipitation | 715 | 646 | 713 | 720 | 744 | 723 |
Humidity/Visibility | 118 | 102 | 121 | 139 | 152 | 145 |
Parameter | Jul | Aug | Sep | Oct | Nov | Dec |
Tmax | 1173 | 1173 | 1133 | 1138 | 1131 | 1174 |
Tmin | 1172 | 1172 | 1132 | 1139 | 1126 | 1170 |
Duration of sunshine | 0 | 0 | 0 | 0 | 0 | 0 |
Precipitation | 744 | 745 | 720 | 741 | 720 | 744 |
Humidity/Visibility | 152 | 151 | 146 | 147 | 146 | 152 |
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. |