condition mean min max 0 h after light 9.574605 9.2174 9.93181 4 h after light 8.005495 7.95004 8.06095 8 h after light 9.861885000000001 9.65737 10.0664 4 h after dark 9.993085 9.82567 10.1605 8 h after dark 11.1703 10.7282 11.6124 12 h after dark 9.73766 8.99182 10.4835