Table 2. Dielectric relaxation parameters from double Debye model.

		${\mathit{ϵ}}_s$	${\mathit{ϵ}}_2$	${\mathit{ϵ}}_{\infty }$	τ1 (ps)	τ2 (ps)
Day 2	Asian	23	3.5	3.0	2.5	0.10
	Black	78	4.2	2.8	9.0	0.07
	Caucasian	27	2.3	2.0	7.0	0.07
Day 16	Asian	88	6.0	3.5	10.5	0.11
	Black	66	4.6	3.0	11.0	0.08
	Caucasian	21	3.8	2.9	3.5	0.11