condition mean min max 4 h after light 11.9718 10.0799 13.8637 8 h after light 11.20595 11.0551 11.3568 12 h after light 13.328949999999999 12.9729 13.685 4 h after dark 16.6145 15.2792 17.9745 8 h after dark 15.835 15.1364 16.318 12 h after dark 13.642733333333332 13.2839 14.0777