Table II.

Measured GTC respositioning uncertainties

#	Anterior	Left	Right	Left vert	Right vert	$\text{Left}+\text{right}$
1	9.5 cm	12.7 cm	14.1 cm	14.5 cm	14.8 cm	26.8 cm
2	9.5 cm	12.9 cm	14.1 cm	14.5 cm	14.8 cm	27.0 cm
3	9.5 cm	12.9 cm	14.0 cm	14.5 cm	14.8 cm	26.9 cm
4	9.6 cm	12.8 cm	14.0 cm	14.4 cm	14.8 cm	26.8 cm
5	9.6 cm	12.9 cm	14.2 cm	14.5 cm	14.7 cm	27.1 cm
6	9.6 cm	12.8 cm	14.2 cm	14.5 cm	14.8 cm	27.0 cm
7	9.5 cm	12.9 cm	14.1 cm	14.5 cm	14.7 cm	27.0 cm
8	9.5 cm	12.9 cm	14.2 cm	14.5 cm	14.8 cm	27.1 cm
9	9.5 cm	12.9 cm	14.0 cm	14.5 cm	14.7 cm	26.9 cm
10	9.5 cm	12.9 cm	14.0 cm	14.6 cm	14.8 cm	26.9 cm
11	9.6 cm	13.0 cm	14.0 cm	14.4 cm	14.8 cm	27.0 cm
12	9.6 cm	12.9 cm	14.0 cm	14.5 cm	14.7 cm	26.9 cm
13	9.6 cm	13.0 cm	14.1 cm	14.5 cm	14.7 cm	27.1 cm
Standard deviation	0.052 cm	0.080 cm	0.083 cm	0.049 cm	0.051 cm	0.104 cm $({\sigma }_{L+R})$
Measurement error	0.074 cm $({\sigma }_M)$
Position error	0.00 cm	0.03 cm	0.04 cm	0.00 cm	0.00 cm