condition mean min max 4 h after light 21.4 21.4 21.4 8 h after light 24.25 22.0 26.5 12 h after light 24.45 17.2 31.7 4 h after dark 33.55 13.1 54.0 8 h after dark 55.5 23.5 87.5 12 h after dark 28.1 19.1 37.1