treatment elasticity Treated 12.25 Treated 10.75 Treated 5 Treated 10.75 Treated 8 Treated 6 Treated 9.25 Treated 4 Treated 10.25 Treated 7.25 Treated 8 Treated 6.25 Treated 7.25 Treated 9.25 Treated 6 Treated 7.5 Treated 4 Treated 10.25 Treated 8.25 Treated 4.75 Treated 5.5 Treated 7.25 Untreated 17 Untreated 12.25 Untreated 6.5 Untreated 10.25 Untreated 16 Untreated 11.25 Untreated 12 Untreated 11 Untreated 14 Untreated 12 Untreated 10 Untreated 10.25 Untreated 12 Untreated 8 Untreated 14 Untreated 9 Untreated 10.25 Untreated 15 Untreated 10 Untreated 12.25 Untreated 16 Untreated 10.25