condition mean min max 4 h after light 21.9 21.9 21.9 8 h after light 27.35 23.0 31.7 12 h after light 25.75 23.8 27.7 4 h after dark 23.35 6.0 40.7 8 h after dark 51.55 31.6 71.5 12 h after dark 59.849999999999994 58.4 61.3