condition mean min max 4 h after light 0.01227795 0.0 0.0245559 8 h after light 0.0 0.0 0.0 12 h after light 0.0 0.0 0.0 4 h after dark 0.0 0.0 0.0 8 h after dark 0.0 0.0 0.0 12 h after dark 0.0088907 0.0 0.0177814