condition mean min max 4 h after light 56.6 56.6 56.6 8 h after light 47.55 47.5 47.6 12 h after light 49.6 9.9 89.3 4 h after dark 39.0 38.2 39.8 8 h after dark 52.15 49.5 54.8 12 h after dark 54.650000000000006 37.4 71.9