condition mean min max 0 h after light 0.0 0.0 0.0 4 h after light 0.0528785 0.0 0.105757 8 h after light 0.0 0.0 0.0 4 h after dark 0.0 0.0 0.0 8 h after dark 0.0 0.0 0.0 12 h after dark 0.0 0.0 0.0