condition mean min max 4 h after light 139.8 139.8 139.8 8 h after light 100.0 74.1 125.9 12 h after light 64.65 54.4 74.9 4 h after dark 85.0 75.8 94.2 8 h after dark 78.2 77.9 78.5 12 h after dark 107.75 102.2 113.3