condition mean min max 4 h after light 3.8458033333333335 3.77831 3.8835699999999997 8 h after light 3.8524366666666663 3.7774199999999998 3.92942 12 h after light 3.96771 3.8666199999999997 4.03795 4 h after dark 3.90087 3.88876 3.9120199999999996 8 h after dark 3.87895 3.84955 3.91722 12 h after dark 3.84322 3.81351 3.87485