Number of days available for climatic review
Parameter | Jan | Feb | Mar | Apr | May | Jun |
Tmax | 632 | 587 | 635 | 627 | 667 | 607 |
Tmin | 658 | 598 | 672 | 672 | 697 | 662 |
Duration of sunshine | 161 | 205 | 175 | 191 | 233 | 178 |
Precipitation | 126 | 119 | 123 | 143 | 159 | 147 |
Humidity/Visibility | 101 | 95 | 101 | 115 | 132 | 115 |
Parameter | Jul | Aug | Sep | Oct | Nov | Dec |
Tmax | 620 | 658 | 654 | 663 | 642 | 667 |
Tmin | 693 | 706 | 679 | 694 | 661 | 711 |
Duration of sunshine | 197 | 148 | 169 | 165 | 181 | 214 |
Precipitation | 153 | 157 | 160 | 151 | 158 | 157 |
Humidity/Visibility | 120 | 135 | 134 | 128 | 119 | 140 |
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. |