condition mean min max 4 h after light 122.0 122.0 122.0 8 h after light 112.85 109.1 116.6 12 h after light 100.35 87.8 112.9 4 h after dark 110.4 106.1 114.7 8 h after dark 128.8 127.2 130.4 12 h after dark 103.2 83.0 123.4