Table 1.

TRE of the cross landmark initially (start) and after registration

	Mean	StD.	Percentiles
			50%	60%	70%	80%	90%	100%
Start (mm)	22.80	10.50	21.42	25.22	30.03	33.50	36.96	47.88
GO (mm)	9.65	6.23	8.39	9.80	11.50	14.08	17.78	46.83
GO+ (mm)	10.49	5.97	9.42	10.87	12.49	15.00	18.54	38.02
GC (mm)	9.15	6.74	7.74	9.32	11.03	13.68	18.12	44.09
GC+ (mm)	7.80	6.30	5.91	7.51	9.30	11.55	16.43	48.37
GI (mm)	8.44	6.61	6.47	7.58	8.97	11.68	16.37	48.55
GI+ (mm)	6.79	4.75	5.63	6.50	7.48	8.84	11.77	46.14
Manual${}^a$ (mm)	6.48	5.60	4.93	5.97	7.49	8.70	11.37	40.82
Agent (mm)	2.92	2.22	2.34	2.80	3.45	4.23	5.76	16.11

${}^a$Manual registration for a single, randomly chosen perturbation in each case