Table 1.

Reduced modulus and hardness from nanoindentation tests. Note: mean ± s.d.; (n) is the number of indentations.

radial position	internode number
	3	7	14
reduced modulus (GPa)
r/a ∼ 0.25	13.9 ± 2.49 (14)	16.08 ± 1.89 (23)	13.52 ± 1.79 (23)
r/a ∼ 0.50	12.93 ± 2.27 (14)	16.04 ± 2.29 (25)	14.04 ± 1.65 (21)
r/a ∼ 0.75	15.2 ± 1.29 (24)	16.72 ± 2.30 (24)	14.11 ± 1.38 (23)
internode average	14.24 ± 2.14 (52)	16.28 ± 2.17 (72)	13.88 ± 1.61 (67)
combined average	14.88 ± 2.26
hardness (MPa)
r/a ∼ 0.25	266.2 ± 87.5 (14)	296.5 ± 54.5 (23)	249.4 ± 48.8 (23)
r/a ∼ 0.50	255.1 ± 75.6 (14)	310.3 ± 59.5 (25)	258.0 ± 47.3 (21)
r/a ∼ 0.75	301.6 ± 42.5 (24)	346.0 ± 69.7 (24)	284.8 ± 34.4 (23)
internode average	279.6 ± 68.3 (52)	317.8 ± 64.2 (72)	264.2 ± 45.9 (67)
combined average	288.6 ± 63.9