condition mean min max 2 h after light 0.0 0.0 0.0 6 h after light 0.0234405 0.0 0.140643 10 h after light 0.0 0.0 0.0 14 h after light 0.0 0.0 0.0 18 h after light 0.0 0.0 0.0 2 h after dark 0.0 0.0 0.0