Number of days available for climatic review
Parameter | Jan | Feb | Mar | Apr | May | Jun |
Tmax | 526 | 491 | 556 | 555 | 564 | 554 |
Tmin | 523 | 486 | 552 | 552 | 564 | 563 |
Duration of sunshine | 186 | 254 | 248 | 240 | 248 | 270 |
Precipitation | 126 | 116 | 128 | 162 | 157 | 152 |
Humidity/Visibility | 118 | 105 | 117 | 135 | 146 | 144 |
Parameter | Jul | Aug | Sep | Oct | Nov | Dec |
Tmax | 572 | 574 | 548 | 565 | 532 | 544 |
Tmin | 568 | 567 | 551 | 559 | 523 | 537 |
Duration of sunshine | 248 | 279 | 240 | 310 | 270 | 248 |
Precipitation | 158 | 163 | 151 | 149 | 122 | 129 |
Humidity/Visibility | 143 | 134 | 137 | 137 | 110 | 120 |
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. |