condition mean min max 4 h after light 109.2 109.2 109.2 8 h after light 111.0 93.8 128.2 12 h after light 103.0 57.8 148.2 4 h after dark 90.4 89.6 91.2 8 h after dark 123.6 108.1 139.1 12 h after dark 117.05 98.1 136.0