Table 2. Independent samples T-test for the time of each method in comparison to ACIR-v3.

Method	N	Time (seconds)	SD	p-value
ASGD2019	124	6.45	0.83	<0.0001
FASGD2015	122	4.76	1.23	0.37
FPSGD2019	111	4.70	1.19	0.601
ACIR-v1	124	15.97	3.37	<0.0001
ACIR-v2	124	4.65	1.2	0.86
ACIR-v3	124	4.62	1.2	-

N: number of registration experiments. SD: standard deviation. p-value: statistical samples t-test p-value comparison to ACIR-v3.