condition mean min max 4 h after light 6.59398 4.23463 7.8879 8 h after light 6.40153 1.2849 12.3416 12 h after light 5.654653333333333 3.17684 7.5297 4 h after dark 10.866913333333333 8.52104 12.734 8 h after dark 7.866230000000001 5.34811 9.23178 12 h after dark 8.604186666666667 7.99069 9.39601