condition mean min max 4 h after light 31.7 31.7 31.7 8 h after light 19.8 19.6 20.0 12 h after light 11.649999999999999 10.7 12.6 4 h after dark 19.35 17.9 20.8 8 h after dark 23.2 22.9 23.5 12 h after dark 24.45 21.5 27.4