Table 5.

The errors in accurate gaze detection by combined gaze-tracking algorithm (unit: °).

	User	User 1	User 2	User 3	User 4	User 5	User 6	User 7	User 8	Average
	Gaze Point
1		0.50	0.77	0.42	0.48	0.57	0.34	0.71	0.58	0.55
2		0.34	0.55	0.50	0.71	0.45	0.76	0.70	0.61	0.58
3		0.42	0.54	0.35	0.31	0.67	0.69	0.62	0.59	0.52
4		0.36	0.47	0.37	0.32	0.39	0.54	0.49	0.40	0.42
5		0.39	0.75	0.77	0.38	0.64	0.52	0.71	0.45	0.58
6		0.42	0.48	0.78	0.62	0.39	0.52	0.57	0.54	0.54
7		0.51	0.36	0.59	0.67	0.48	0.45	0.48	0.42	0.50
8		0.32	0.69	0.33	0.62	0.61	0.55	0.77	0.72	0.58
9		0.75	0.49	0.42	0.53	0.69	0.56	0.74	0.40	0.57
Average		0.45	0.57	0.50	0.52	0.54	0.55	0.64	0.52	0.54 *

(* Row average.).