condition mean min max 4 h after light 5.657215 4.77858 6.53585 8 h after light 7.074574999999999 6.34549 7.80366 12 h after light 6.62693 4.06352 9.19034 4 h after dark 14.8322 14.7888 14.8756 8 h after dark 13.277999999999999 11.7782 14.7778 12 h after dark 11.841425000000001 9.10035 14.5825