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 0.04548733333333333 0.0 0.136462 9 h after dark 0.0 0.0 0.0 12 h after dark 0.1564275 0.0 0.312855