I must be missing something, but [1] says "A whole-body exposure to 5 or more gray of high-energy radiation at one time usually leads to death within 14 days."

I must be missing something, but [1] says "A whole-body exposure to 5 or more gray of high-energy radiation at one time usually leads to death within 14 days." I see values of up to 460 Gy/h on this map, what time unit does [1] talk about that 5 is deadly but 460 is normal? [1]: http://en.wikipedia.org/wiki/Gray_%28unit%29#Effect_on_the_body http://en.wikipedia.org/wiki/Gray_%28unit%29#Effect_on_the_b...