Table 3.

RMS variables by three viewing conditions ($\mu$m, mean $\pm$ SD)

	RMS 3${}^{\mathrm{rd}}$	RMS 4${}^{\mathrm{th}}$	RMS 5${}^{\mathrm{th}}$	RMS 6${}^{\mathrm{th}}$	RMS 7${}^{\mathrm{th}}$
2D	$-$0.060 $\pm$ 0.012	$-$0.062 $\pm$ 0.057	$-$0.024 $\pm$ 0.034	$-$0.002 $\pm$ 0.025	$-$0.005 $\pm$ 0.012
3D-A	$-$0.077 $\pm$ 0.093	$-$0.060 $\pm$ 0.070	$-$0.027 $\pm$ 0.023	$-$0.008 $\pm$ 0.016	$-$0.005 $\pm$ 0.010
3D-B	$-$0.082 $\pm$ 0.078${}^{\mathrm{ab}}$	$-$0.080 $\pm$ 0.079${}^{\mathrm{ab}}$	$-$0.026 $\pm$ 0.034	$-$0.016 $\pm$ 0.024	$-$0.008 $\pm$ 0.011
$F$	2.930	4.043	0.517	2.683	1.186
$P$	$<$ 0.05	$<$ 0.05	$>$ 0.05	$>$ 0.05	$>$ 0.05

Note: “a” and “b” denoted significant differences from 2D and 3D-A, respectively ($P<$ 0.05).