condition mean min max 4 h after light 54.2 54.2 54.2 8 h after light 68.4 47.4 89.4 12 h after light 72.0 68.4 75.6 4 h after dark 88.15 72.3 104.0 8 h after dark 88.85 79.0 98.7 12 h after dark 73.7 68.7 78.7