condition mean min max 4 h after light 122.4 122.4 122.4 8 h after light 111.9 102.3 121.5 12 h after light 77.3 64.1 90.5 4 h after dark 68.9 62.4 75.4 8 h after dark 89.7 85.7 93.7 12 h after dark 110.30000000000001 77.3 143.3