condition mean min max 4 h after light 53.8 53.8 53.8 8 h after light 53.35 52.2 54.5 12 h after light 49.7 44.5 54.9 4 h after dark 86.4 55.2 117.6 8 h after dark 70.35 63.5 77.2 12 h after dark 72.8 27.9 117.7