condition mean min max 4 h after light 117.0 117.0 117.0 8 h after light 155.25 150.2 160.3 12 h after light 137.75 68.8 206.7 4 h after dark 123.3 76.1 170.5 8 h after dark 109.0 66.2 151.8 12 h after dark 110.9 61.7 160.1