# g z age age(z=0) 58.6473 54.5158 2.072 13 58.7630 53.9437 1.572 12.5 58.4004 53.1248 1.072 12.0 56.4121 51.7195 0.572 11.5 52.6405 50.4725 0.272 11.2 48.9787 48.0110 0.122 11.05