stem-length	group
2.520000000e+001	control
2.950000000e+001	control
3.010000000e+001	control
3.010000000e+001	control
3.020000000e+001	control
3.020000000e+001	control
3.030000000e+001	control
3.060000000e+001	control
3.110000000e+001	control
3.120000000e+001	control
3.140000000e+001	control
3.350000000e+001	control
3.430000000e+001	control
2.470000000e+001	stress
2.570000000e+001	stress
2.650000000e+001	stress
2.700000000e+001	stress
2.710000000e+001	stress
2.720000000e+001	stress
2.730000000e+001	stress
2.770000000e+001	stress
2.870000000e+001	stress
2.890000000e+001	stress
2.970000000e+001	stress
3.000000000e+001	stress
3.060000000e+001	stress