condition mean min max 4 h after light 68.9635 66.201 71.726 8 h after light 52.8496 49.4992 56.2 12 h after light 56.2346 55.5057 56.9635 4 h after dark 83.00970000000001 82.6915 83.3279 8 h after dark 88.3605 88.2791 88.4419 12 h after dark 87.1012 85.2066 88.9958