What is a safe UV rating?

Related questions

1. How long does it take to tan in UV 3?
2. Why does Australia have high UV levels?
3. What is the highest UV rating?
4. Can you burn with a UV index of 3?
5. What is the highest UV rating in Australia?
6. Where is the highest UV index in the world?
7. Can you burn in the evening sun?
8. Can you tan with a UV index of 3?
9. Does UV index change throughout day?
10. How long does it take to burn in 11 UV index?

Tags

1. #index
2. #organization
3. #world
4. #global
5. #protection
6. #higher
7. #extreme
8. #measures
9. #moderate
10. #health
11. #solar
12. #recommended
13. #scale
14. #levels