Table 2.

Relative deviation between developed sensor and reference for principal HRV features.

Test #	$\mathbf{\Delta }\%$
	HR	SDNN	RMSSD	LF	HF
1	0.14	−0.43	−3.9	1.6	−5.4
2	0.16	−0.38	−3.8	−0.06	−3.5
3	0.16	−0.65	−4.6	0.80	−5.3
4	0.16	−0.34	−3.7	−0.14	−4.5
5	0.17	−0.29	−2.9	−0.90	−6.1
6	0.17	−0.22	−1.2	−0.16	1.1
7	0.14	−0.49	0.47	1.9	3.8
8	0.16	−0.34	1.2	−0.52	0.33
9	−0.27	−2.5	−6.3	−0.25	−1.8
10	0.17	−2.3	−6.4	4.1	1.1
11	0.18	−2.1	−6.9	−3.3	−1.9
12	0.18	−1.7	−5.9	−4.6	−5.9
13	0.14	−0.06	0.94	−1.2	−0.88
14	0.15	−0.22	0.63	−0.31	−0.26
15	0.16	−0.18	0.37	−0.35	−1.8
16	0.16	−0.36	−0.47	−1.7	−2.7
17	0.16	−0.66	−1.4	−0.90	−3.8
18	0.16	−0.62	−1.6	0.66	−6.2
Mean	0.13	−0.77	−2.5	−0.29	−2.4