condition mean min max 4 h after light 0.0 0.0 0.0 8 h after light 0.0 0.0 0.0 12 h after light 0.0 0.0 0.0 4 h after dark 0.58708 0.0 1.17416 8 h after dark 0.0 0.0 0.0 12 h after dark 0.0 0.0 0.0