Table 2. The measured stress of each stalk, in ascending order.

Group A		Group B
Test n°	Stress (GPa)	Test n°	Stress (GPa)
1 (A2)	0.139	1 (B3)	0.067
2 (A3)	0.297	2 (B4)	0.120
3 (A4)	0.347	3 (B5)	0.259
4 (A1)	0.639	4 (B1)	0.322
		5 (B2)	0.332
		6 (B6)	0.617