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Number of days available for climatic review

ParameterJanFebMarAprMayJun
Tmax700632706678702678
Tmin701635703675703680
Duration of sunshine6278938810999
Precipitation684616682661688660
Humidity/Visibility109100112103112107


ParameterJulAugSepOctNovDec
Tmax703732697698678703
Tmin708729694695684702
Duration of sunshine111133112915546
Precipitation682715692705660684
Humidity/Visibility116137134126110115


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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