condition mean min max 0 h after light 98.31135 96.0897 100.533 4 h after light 49.95955 44.0665 55.8526 8 h after light 34.28675 33.0179 35.5556 4 h after dark 49.9914 42.475 57.5078 8 h after dark 69.30735 62.691 75.9237 12 h after dark 86.9368 72.8946 100.979