condition mean min max 0 h after light 8.547365 8.40744 8.68729 4 h after light 5.208425 4.52573 5.89112 8 h after light 4.810435 3.55249 6.06838 4 h after dark 13.11385 12.5156 13.7121 8 h after dark 14.149000000000001 13.4359 14.8621 12 h after dark 10.705515 8.29053 13.1205