condition mean min max 3 h after light 0.0 0.0 0.0 6 h after light 0.0 0.0 0.0 9 h after light 0.0 0.0 0.0 12 h after light 0.0 0.0 0.0 3 h after dark 0.0 0.0 0.0 6 h after dark 0.20393733333333333 0.0 0.611812 9 h after dark 0.4129333333333333 0.0 1.2388 12 h after dark 0.0 0.0 0.0