condition mean min max 0 h after light 8.503655 7.80664 9.20067 4 h after light 10.07262 9.73434 10.4109 8 h after light 4.585895 3.03844 6.13335 4 h after dark 5.42701 3.2698 7.58422 8 h after dark 8.2987 5.8795 10.7179 12 h after dark 10.82415 10.4331 11.2152