TWA 6 8 10 12 14 16 20 52 5.2 5.9 6.2 6.4 6.5 6.6 6.6 60 5.6 6.2 6.5 6.7 6.8 6.9 6.9 75 5.8 6.4 6.8 7.0 7.2 7.3 7.4 90 5.8 6.5 6.9 7.2 7.3 7.5 7.8 110 5.7 6.4 6.8 7.2 7.5 7.8 8.2 120 5.3 6.2 6.7 7.1 7.5 7.8 8.4 135 4.5 5.6 6.3 6.7 7.1 7.5 8.2 150 3.8 4.7 5.6 6.3 6.7 7.1 7.8