condition mean min max 0 h after light 0.0 0.0 0.0 4 h after light 2.7625 0.0 5.525 8 h after light 0.0 0.0 0.0 4 h after dark 0.0 0.0 0.0 8 h after dark 0.0 0.0 0.0 12 h after dark 0.0 0.0 0.0