condition mean min max 4 h after light 73.8 73.8 73.8 8 h after light 51.25 46.2 56.3 12 h after light 74.5 68.5 80.5 4 h after dark 107.2 87.9 126.5 8 h after dark 95.05 88.8 101.3 12 h after dark 83.8 74.5 93.1