Number of days available for climatic review
Parameter | Jan | Feb | Mar | Apr | May | Jun |
Tmax | 514 | 474 | 525 | 523 | 518 | 503 |
Tmin | 514 | 472 | 517 | 523 | 522 | 502 |
Duration of sunshine | 0 | 0 | 0 | 0 | 0 | 0 |
Precipitation | 140 | 118 | 146 | 169 | 163 | 160 |
Humidity/Visibility | 114 | 107 | 116 | 135 | 144 | 143 |
Parameter | Jul | Aug | Sep | Oct | Nov | Dec |
Tmax | 518 | 506 | 503 | 499 | 473 | 489 |
Tmin | 516 | 510 | 502 | 500 | 470 | 491 |
Duration of sunshine | 0 | 0 | 0 | 0 | 0 | 0 |
Precipitation | 163 | 163 | 155 | 156 | 136 | 142 |
Humidity/Visibility | 143 | 134 | 135 | 135 | 108 | 118 |
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. |