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Number of days available for climatic review

ParameterJanFebMarAprMayJun
Tmax398359400389400389
Tmin402363402388403388
Duration of sunshine248254279270310300
Precipitation124112124121124120
Humidity/Visibility1783885854-910378665-1960291392000


ParameterJulAugSepOctNovDec
Tmax400373388401387401
Tmin401375389401389401
Duration of sunshine310310300310240279
Precipitation12599120124120124
Humidity/Visibility00-21328699520-19605193960


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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