condition mean min max 4 h after light 6.6 6.6 6.6 8 h after light 11.9 5.7 18.1 12 h after light 37.3 30.7 43.9 4 h after dark 6.45 6.2 6.7 8 h after dark 14.100000000000001 7.4 20.8 12 h after dark 5.6 5.0 6.2