Table 1.

Small plastic target isocentric positioning test ^a

Displacement direction	Mean	Standard deviation	Min	Max	95% CI for mean
LR (ΔX)	0.19	0.16	$-0.05$	0.50	0.06
SI (ΔY)	0.48	0.22	0.09	0.82	0.09
AP (ΔZ)	0.76	0.17	0.40	1.00	0.07
3D Vector	0.95	0.18	0.67	1.28	0.07

^a $N=27$; all values in millimeters.

$\text{CI}=\text{confidence}$ interval; $\text{LR}=\text{left}–\text{right}$; $\text{SI}=\text{superior}–\text{inferior}$; $\text{AP}=\text{anterior}–\text{posterior}$; $3\mathrm{D}=\text{three}–\text{dimensional}$.