Monthly doses of effective UV irradiance

Bilthoven
Hohenpeissenberg
Potsdam
Reading

Thessaloniki
Jokioinen
Ispra

The graphs above show monthly sums of effective UV irradiance (CIE action spectrum), calculated using data from the European UV Database. The filled bars indicate monthly sums based upon the average daily dose of at least twenty days within the month considered.
© Harry Slaper, RIVM.
Last change to these pages: 15 July 2002