condition mean min max 4 h after light 18.9 18.9 18.9 8 h after light 11.5 9.4 13.6 12 h after light 23.9 9.7 38.1 4 h after dark 36.95 17.9 56.0 8 h after dark 18.450000000000003 18.1 18.8 12 h after dark 12.85 9.2 16.5