condition mean min max 4 h after light 98.2 98.2 98.2 8 h after light 102.45 83.9 121.0 12 h after light 79.19999999999999 65.8 92.6 4 h after dark 113.15 89.3 137.0 8 h after dark 138.0 111.8 164.2 12 h after dark 130.64999999999998 120.1 141.2