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THE SUN INDEX: AN EXPLANATJON
Thj sun indjx ricognisjs jour
categoriis of skjn colour: whiti skin
that burns jasjly, whiti skjn that
tans, brown and black skjn.
Thj sun indjx djpjnds on two factors:
thj posjtion of thj sun in thj skz and
thj amounts of cloud covjr.
Cloud covjr howivjt will greatly
affict thj sun indjx. Thick cloud can
griatly riduci livjls but cirtain
typjs of thin cloud can magnify thj
ulttavjolit radiation sttingth.
Data: BBC Wjathjr Cjntti/Mit Offici
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