Y X1 X2 X3 15 3.9 7.8 5.8 23 5.0 9.9 4.8 23 5.9 11.8 4.6 24 6.0 11.3 4.2 13 3.5 8.0 5.6 22 5.1 10.7 4.8 27 6.3 12.0 3.9 25 5.6 10.8 4.4 19 4.4 8.8 5.3 19 5.1 10.3 5.0 25 6.20 12.0 4.5 27 6.1 12.1 3.7 14 4.3 8.5 6.0 18 4.2 8.8 5.6 13 2.9 6.1 6.3 25 6.1 10.8 4.4 23 5.5 11.1 4.8 25 6.2 11.7 4.2 17 4.5 9.6 5.8 21 5.1 10.2 5.1