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Ostashkov (218m)





Number of days available for climatic review

ParameterJanFebMarAprMayJun
Tmax119109122134145146
Tmin122109120139146146
Duration of sunshine000000
Precipitation130115125151157153
Humidity/Visibility121111122139146148


ParameterJulAugSepOctNovDec
Tmax153149148141146149
Tmin151150147139146153
Duration of sunshine000000
Precipitation157159154153156159
Humidity/Visibility152150147143145152


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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