TWA 6 8 10 12 14 16 20 52 5.2 6.1 6.6 6.9 7.0 7.1 7.1 60 5.6 6.5 6.9 7.1 7.3 7.4 7.4 75 5.9 6.8 7.2 7.5 7.7 7.8 7.9 90 6.1 7.0 7.3 7.6 7.8 8.0 8.2 110 6.0 7.0 7.5 7.8 8.1 8.2 8.5 120 5.7 6.8 7.3 7.8 8.1 8.4 8.8 135 5.0 6.2 6.9 7.4 7.9 8.2 8.9 150 4.2 5.2 6.2 6.9 7.4 7.8 8.5