condition mean min max 4 h after light 8.87776 7.86451 9.89101 8 h after light 12.07065 11.9173 12.224 12 h after light 12.63965 12.2945 12.9848 4 h after dark 16.2865 15.7472 16.8258 8 h after dark 11.2418 10.8058 11.6778 12 h after dark 11.018149999999999 10.5582 11.4781