Table 4.

The overall mean errors (M) of all directions for each treatment site

	Lateral y	Longitudinal (mm)	Vertical (mm)	Rotational (°)
Brain	$-0.6$	$-0.5$	0.6	$-0.1$
H&N	$-0.1$	0.6	0.9	0.1
T&A	0.5	$-2.0$	1.0	$-0.1$
Prostate	$-0.6$	0.3	$-1.0$	$-0.1$

$\mathrm{H}\&\mathrm{N}=\text{head and neck}$; $\mathrm{T}\&\mathrm{A}=\text{thorax and abdomen}$.