condition mean min max 0 h after light 3.161245 3.12701 3.19548 4 h after light 6.04085 5.62331 6.45839 8 h after light 4.439605 4.09405 4.78516 4 h after dark 5.493955 5.20161 5.7863 8 h after dark 5.239005000000001 4.96842 5.50959 12 h after dark 3.800555 2.97775 4.62336