condition mean min max 0 h after light 15.4909 15.1429 15.8389 4 h after light 10.64681 9.24122 12.0524 8 h after light 13.904599999999999 13.1794 14.6298 4 h after dark 17.49295 16.7837 18.2022 8 h after dark 15.764050000000001 15.3404 16.1877 12 h after dark 15.29795 14.2532 16.3427