Subgroup wtm1998.1 wtm1998.2 wtm1998.3 wtm1998.4 wtm1998.5 1 32.3 31.6 13.3 14.3 16.6 2 23.2 32.9 30.1 34.8 29.9 3 8.1 17.5 11.9 11.4 12.5 4 19.6 26.2 27.8 27.4 17.1 5 31.4 35.7 29.2 29.7 26.9 6 37.5 22.6 8.1 12.9 14.5 7 20.0 18.0 23.6 9.0 16.1 8 7.9 4.4 4.4 3.9 3.7 9 17.8 17.1 18.4 24.9 21.5 10 25.4 26.9 27.3 21.6 29.2 11 35.9 42.8 41.1 37.4 24.8 12 26.6 33.4 27.9 25.1 29.9 13 13.7 11.8 20.6 6.2 14.2 14 32.3 23.1 17.7 22.1 12.1 15 27.4 26.0 29.4 29.5 32.5 16 36.5 42.4 30.7 27.0 23.3 17 24.0 36.8 31.5 22.5 25.6 18 26.2 18.0 14.4 6.8 11.3 19 25.7 26.3 23.2 17.8 18.1 20 16.4 44.1 33.4 29.7 32.2 21 13.2 23.3 23.7 21.0 16.7 22 24.5 32.8 24.4 29.2 22.0 23 16.7 24.9 27.8 29.3 31.4 24 34.2 25.6 11.5 8.5 2.6 25 33.6 17.4 17.5 18.4 15.6 26 27.2 37.2 27.4 28.2 21.2 27 29.6 39.0 35.7 32.5 29.3 28 18.9 54.3 40.4 35.3 28.3 29 19.1 28.6 23.8 29.9 27.1 30 29.9 29.4 30.8 30.3 38.5