condition mean min max 4 h after light 94.4 94.4 94.4 8 h after light 78.85 76.5 81.2 12 h after light 103.25 103.0 103.5 4 h after dark 103.95 86.5 121.4 8 h after dark 77.75 56.7 98.8 12 h after dark 89.95 62.5 117.4