condition mean min max 4 h after light 5.03926 5.00513 5.06635 8 h after light 4.926436666666667 4.8521 5.03501 12 h after light 4.9032800000000005 4.7102900000000005 5.0209 4 h after dark 4.897403333333333 4.86835 4.938359999999999 8 h after dark 4.96724 4.81398 5.18332 12 h after dark 4.88634 4.75418 4.95303