Table 3.

Mean values and SD of ambiguity correlation coefficients using VMD method.

Data Group		1#	2#	3#
		1 mm Leak	Non-Leak	2 mm Leak
1 mm leak	mean value	0.7447	0.3134	0.1025
	SD	0.0717	0.1164	0.0969
Non-leak	mean value	0.3134	0.8407	0.0685
	SD	0.1164	0.0240	0.0534
2 mm leak	mean value	0.1025	0.0685	0.2253
	SD	0.0969	0.0534	0.0452