condition mean min max 0 h after light 1.0069 1.006 1.0078 4 h after light 0.7063535000000001 0.465928 0.946779 8 h after light 0.7808515 0.723844 0.837859 4 h after dark 1.822675 1.70658 1.93877 8 h after dark 1.33425 1.30604 1.36246 12 h after dark 0.945062 0.639324 1.2508