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Europe

Istrana





Number of days available for climatic review

ParameterJanFebMarAprMayJun
Tmax133123146142153139
Tmin140118139145145145
Duration of sunshine000000
Precipitation159144156151155150
Humidity/Visibility131122139136139144


ParameterJulAugSepOctNovDec
Tmax144166182170163137
Tmin143165178175184145
Duration of sunshine000000
Precipitation163188213211197161
Humidity/Visibility139154177177164141


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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