condition mean min max 4 h after light 124.979 120.166 129.792 8 h after light 77.49680000000001 75.7615 79.2321 12 h after light 70.55675 67.6471 73.4664 4 h after dark 68.2076 65.2434 71.1718 8 h after dark 81.34955 81.1094 81.5897 12 h after dark 110.142 109.533 110.751