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Number of days available for climatic review

ParameterJanFebMarAprMayJun
Tmax125711351263122612641225
Tmin126011441264122512681222
Duration of sunshine6113685
Precipitation190180195186186182
Humidity/Visibility176154177173177173


ParameterJulAugSepOctNovDec
Tmax126712641247128512491289
Tmin126712671249129312491295
Duration of sunshine984574
Precipitation189192218215214221
Humidity/Visibility180179196199196208


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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