condition mean min max 4 h after light 0.0 0.0 0.0 8 h after light 0.0 0.0 0.0 12 h after light 0.0 0.0 0.0 4 h after dark 0.051874 0.0 0.103748 8 h after dark 0.0 0.0 0.0 12 h after dark 0.0849615 0.0 0.169923