condition mean min max 0 h after light 3.717695 3.71438 3.72101 4 h after light 2.339845 2.1026 2.57709 8 h after light 3.23975 2.94079 3.53871 4 h after dark 5.890675 4.99911 6.78224 8 h after dark 6.532595000000001 6.09701 6.96818 12 h after dark 4.963675 4.56934 5.35801