Table 1.

(a) Surface wave speeds at the baseline test for a patient. (b) Surface wave speeds at follow-up testing for same patient. (c) The changes of surface wave speeds between the second and first tests for the patient.

1st				2nd				change [%]
Surface wave speed (m/s)				Surface wave speed (m/s)				Surface wave speed
100 Hz	R1	4.43		100 Hz	R1	3.51		100 Hz	R1	−20.79
	R2	1.92			R2	3.19			R2	66.27
	R3	3.89			R3	3.62			R3	−6.99
	L1	3.92			L1	3.36			L1	−14.33
	L2	2.53			L2	3.03			L2	19.94
	L3	2.75			L3	2.97			L3	8.12
150 Hz	R1	6.74		150 Hz	R1	4.57		150 Hz	R1	−32.16
	R2	3.42			R2	3.88			R2	13.57
	R3	3.50			R3	5.29			R3	51.41
	L1	6.71			L1	5.43			L1	−19.16
	L2	3.66			L2	3.95			L2	7.69
	L3	4.06			L3	4.94			L3	21.82
200 Hz	R1	8.41		200 Hz	R1	5.99		200 Hz	R1	−28.79
	R2	5.19			R2	4.85			R2	−6.47
	R3	6.43			R3	6.68			R3	3.82
	L1	6.31			L1	7.51			L1	19.01
	L2	5.35			L2	5.32			L2	−0.60
	L3	4.37			L3	5.62			L3	28.63
	(a)			(b)			(c)