condition mean min max 2 h after light 0.0 0.0 0.0 6 h after light 0.0 0.0 0.0 10 h after light 0.0 0.0 0.0 14 h after light 0.071921 0.0 0.431526 18 h after light 0.07505166666666667 0.0 0.45031 2 h after dark 0.26258166666666666 0.0 1.57549