condition mean min max 4 h after light 6.6 6.6 6.6 8 h after light 10.2 8.2 12.2 12 h after light 13.2 11.6 14.8 4 h after dark 4.7 4.0 5.4 8 h after dark 11.100000000000001 5.9 16.3 12 h after dark 10.35 5.3 15.4