condition mean min max 4 h after light 25.1 25.1 25.1 8 h after light 51.3 45.0 57.6 12 h after light 53.05 49.6 56.5 4 h after dark 35.05 14.8 55.3 8 h after dark 77.85 73.9 81.8 12 h after dark 71.75 24.5 119.0