"Sulfur Trioxide" 14.1 14.2 14.3 14.3 14.3 14.4 14.4 14.4 14.4 14.6 14.7 14.7 14.8 14.8 14.8 14.8 14.9 15.0 15.0 15.2 15.3 15.3 15.4 15.4 15.5 15.6 15.7 15.7 15.9 15.9 16.1 16.2 16.4 16.4 16.5 16.6 17.2 17.2 17.2 17.2 17.3 17.3 17.8 21.9 22.4