condition mean min max 4 h after light 67.0 67.0 67.0 8 h after light 64.8 36.9 92.7 12 h after light 90.7 82.5 98.9 4 h after dark 69.75 41.4 98.1 8 h after dark 163.3 159.6 167.0 12 h after dark 93.15 77.6 108.7