Table 1.

Coefficient D and exponent γ in the fit to the data 〈r²〉 = Dt^γ shown in figure 6.

	D (mm2 s−γ)	γ
0g*	3.47 ± 0.03	1.50 ± 0.01
1g*	0.575 ± 0.005	1.56 ± 0.01
2g*	0.297 ± 0.005	1.51 ± 0.01
1g	0.64 ± 0.01	1.49 ± 0.02