condition mean min max 4 h after light 0.8216025 0.628025 1.01518 8 h after light 0.7278655 0.267881 1.18785 12 h after light 1.41837 1.33437 1.50237 4 h after dark 4.038575 3.60225 4.4749 8 h after dark 2.4711499999999997 2.40552 2.53678 12 h after dark 1.8227799999999998 1.80518 1.84038