TWA 6 8 10 12 14 16 20 52 4.6 5.3 5.8 6.1 6.3 6.4 6.5 60 4.9 5.7 6.2 6.5 6.6 6.7 6.8 75 5.2 6.2 6.6 6.8 7.0 7.1 7.2 90 5.5 6.3 6.7 7.0 7.2 7.3 7.5 110 5.5 6.5 6.9 7.2 7.4 7.5 7.7 120 5.2 6.3 6.9 7.2 7.5 7.7 8.0 135 4.7 5.8 6.6 7.0 7.4 7.7 8.3 150 3.9 4.9 5.8 6.5 7.0 7.4 8.0