condition mean min max 4 h after light 80.5 80.5 80.5 8 h after light 68.05 63.9 72.2 12 h after light 64.05 53.4 74.7 4 h after dark 120.05 89.4 150.7 8 h after dark 105.8 85.0 126.6 12 h after dark 97.0 74.5 119.5