TWA 6 8 10 12 14 16 20 52 4.6 5.5 6.1 6.3 6.5 6.6 6.7 60 5.0 5.9 6.4 6.6 6.8 6.9 7.0 75 5.4 6.2 6.7 6.9 7.1 7.3 7.4 90 5.6 6.4 6.8 7.1 7.2 7.5 7.7 110 5.5 6.4 6.9 7.2 7.5 7.7 8.0 120 5.2 6.2 6.7 7.2 7.5 7.8 8.3 135 4.5 5.6 6.4 6.8 7.2 7.6 8.3 150 3.8 4.8 5.7 6.4 6.8 7.2 7.9