Cosmic-radiation exposure

Cosmic-radiation exposure

Table
Cosmic-radiation exposure
location mean dose in millisievert (mSv)* per year
sea level, temperate zone 0.20–0.40
1,500 metres 0.40–0.60
3,000 metres 0.80–1.20
12,000 metres 28
36–600 kilometres 70–150
interplanetary space 180–250
Van Allen radiation belt (protons) <15,000
single solar flare (protons and helium) <10,000
*Millisievert is a radiation dose-equivalent unit: it corresponds to a dose equivalent in biologic effectiveness to 10 ergs energy of gamma radiation transferred to one gram of tissue.
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Universalium. 2010.

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