condition mean min max 0 h after light 11.2143 10.4824 11.9462 4 h after light 34.91915 33.0436 36.7947 8 h after light 56.52065 55.0883 57.953 4 h after dark 34.42615 33.2463 35.606 8 h after dark 21.35125 21.0604 21.6421 12 h after dark 14.7056 11.0445 18.3667