condition mean min max 4 h after light 3.5 3.5 3.5 8 h after light 12.5 8.2 16.8 12 h after light 23.45 8.4 38.5 4 h after dark 7.300000000000001 5.8 8.8 8 h after dark 8.8 5.9 11.7 12 h after dark 7.35 6.3 8.4