Mondo

Europa

De Bilt





Number of days available for climatic review

ParametroGenFebMarAprMagGiu
Tmax597562619596609599
Tmin596560617597608599
Durata del soleggiamento402378375323393326
Precipitazione202196231228244233
Umidità/Visibilità180160173166170165


ParametroLugAgoSetOttNovDic
Tmax611620622639615651
Tmin613620622639614648
Durata del soleggiamento386418398390395421
Precipitazione217222245240209250
Umidità/Visibilità173177198203207207


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.

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