condition mean min max 4 h after light 9.455899 5.446403 15.861310000000001 8 h after light 7.210752 2.4869939999999997 12.99169 12 h after light 16.090136666666666 10.39274 23.67144 16 h after light 15.933724333333334 9.857393 22.64929 4 h after dark 21.664216666666665 17.54964 23.78388 8 h after dark 11.076470666666667 6.62677 17.43896