condition mean min max 4 h after light 115.2 115.2 115.2 8 h after light 69.2 57.6 80.8 12 h after light 99.30000000000001 97.2 101.4 4 h after dark 78.9 54.2 103.6 8 h after dark 55.75 50.0 61.5 12 h after dark 67.0 65.5 68.5