condition mean min max 0 h after light 0.8564855 0.767084 0.945887 4 h after light 1.491495 1.37668 1.60631 8 h after light 3.5713 3.52043 3.62217 4 h after dark 2.3937049999999997 2.30034 2.48707 8 h after dark 1.62516 1.43152 1.8188 12 h after dark 1.0208605 0.809671 1.23205