condition mean min max 4 h after light 2.5222350000000002 2.19425 2.85022 8 h after light 0.5321665 0.477775 0.586558 12 h after light 2.732915 2.45101 3.01482 4 h after dark 16.47985 16.3841 16.5756 8 h after dark 20.9326 20.0979 21.7673 12 h after dark 11.27335 11.0714 11.4753