There are elements in nature that increase this level of rays, such as snow, since it reflects 80 to 90% of the radiation, to give you an idea an area without snow reflects 20%.
Kunezakhi emvelweni ezandisa lelo zinga lemisebe, njengeqhwa, ngoba likhombisa ama-80 kuya ku-90% wemisebe, ukukunika umbono indawo engenalo iqhwa ekhombisa ama-20%.