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Scilly St Mary





Number of days available for climatic review

ParameterJanFebMarAprMayJun
Tmax170158181175173172
Tmin167160184174177171
Duration of sunshine000000
Precipitation183168186180188178
Humidity/Visibility171162184174182174


ParameterJulAugSepOctNovDec
Tmax177178202201188200
Tmin176183204201194202
Duration of sunshine000000
Precipitation184189211211204210
Humidity/Visibility184180203204190202


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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