condition mean min max 4 h after light 155.5 155.5 155.5 8 h after light 139.3 132.4 146.2 12 h after light 143.75 104.6 182.9 4 h after dark 139.95 120.1 159.8 8 h after dark 140.64999999999998 133.7 147.6 12 h after dark 164.4 138.9 189.9