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Number of days available for climatic review

ParameterJanFebMarAprMayJun
Tmax370336370362357356
Tmin372336370373398384
Duration of sunshine625659738078
Precipitation645762788686
Humidity/Visibility615660717875


ParameterJulAugSepOctNovDec
Tmax372370369389388396
Tmin380391387396389397
Duration of sunshine768086838887
Precipitation839491909193
Humidity/Visibility787783858890


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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Klyuchi

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