condition mean min max 4 h after light 13.276599999999998 13.219 13.3342 8 h after light 14.8826 14.5589 15.2063 12 h after light 13.21815 13.0938 13.3425 4 h after dark 16.27975 15.9839 16.5756 8 h after dark 13.7163 13.2023 14.2303 12 h after dark 18.3701 17.7488 18.9914