Influence of Electrode Placement on Signal Quality for Ambulatory Pregnancy Monitoring

Table 3

Mean SNR_𝑚 in dB for all measurements.

		I	II	III	IV	V	VI
Patient 1	4 cm	−3.9	3.1	1.4	0.5	−3.4	−4.2
	8 cm	7.2	−0.6	3.5	3.0	5.0	−0.2
	16 cm	11.9	7.8	6.3	7.4	10.3	11.2
Patient 2	4 cm	7.3	8.5	7.5	3.9	1.9	5.5
	8 cm	12.5	10.8	11.2	7.1	7.4	6.4
	16 cm	11.5	12.7	12.5	9.9	9.5	11.1
Patient 3	4 cm	7.9	7.4	3.3	1.4	2.3	0.2
	8 cm	10.5	8.9	6.3	4.3	6.0	6.2
	16 cm	12.3	10.8	9.3	8.7	11.4	12.0
Patient 4	4 cm	6.4	4.9	3.3	2.2	4.6	3.5
	8 cm	8.7	6.6	8.5	2.6	8.5	8.8
	16 cm	14.3	13.2	10.8	5.7	12.4	11.6
Patient 5	4 cm	1.0	−0.6	−1.1	−0.3	0.8	0.2
	8 cm	6.9	3.4	3.0	2.9	6.3	6.6
	16 cm	12.3	11.3	10.1	8.5	10.9	11.2