condition mean min max 4 h after light 3.193657 3.055857 3.335231 8 h after light 2.7368896666666664 2.612605 2.881481 12 h after light 1.504997 1.35497 1.6988889999999999 16 h after light 3.113756 2.772716 3.532636 4 h after dark 2.5766476666666667 2.226862 2.994704 8 h after dark 1.6260226666666668 1.557756 1.6794790000000002