Table 3.

Velocities and Zeta Potentials for the 10 Subjects

Subject	Velocity (μm/s)			Zeta Potential (mV)
#	Before	During	Dur/Bef	Before	During	Dur/Bef
1	11.9	29.2	2.46	−7.96	−19.6	2.46
2	3.65	13.6	3.73	−2.45	−9.14	3.73
3	9.36	11.6	1.24	−5.62	−7.12	1.27
4	12.1	21.6	1.79	−7.29	−13.6	1.86
5	9.46	20.8	2.20	−5.87	−13.0	2.22
6	5.78	32.0	5.53	−3.61	−20.3	5.63
7	11.8	42.7	3.61	−7.40	−26.8	3.63
8	7.42	24.4	3.29	−4.66	−15.4	3.30
9	5.26	11.4	2.16	−4.14	−8.96	2.16
10	4.80	10.7	2.23	−3.80	−8.50	2.24
Total	81.5	218		−52.8	−143
Average	8.15	21.8	2.68	−5.28	−14.3	2.70
SD	3.19	10.6	1.24	1.85	6.37	1.26
SEM	1.01	3.34	0.39	0.585	2.02	0.40
t-test:		5.63E-04			3.57E-04

S, second; Dur/Bef, During Earthing divided by Before Earthing; SD; standard deviation; SEM; standard error of the mean.