Influence of Electrode Placement on Signal Quality for Ambulatory Pregnancy Monitoring

Table 4

Mean SNR_𝑓 in dB for all measurements.

		I	II	III	IV	V	VI
Patient 1	4 cm	−2.7	1.2	0.9	0.4	−1.5	−3.0
	8 cm	1.1	−1.1	0.8	0.6	0.9	−0.9
	16 cm	3.7	5.0	4.8	3.9	0.1	0.1
Patient 2	4 cm	−0.1	2.0	3.1	2.2	1.2	−0.8
	8 cm	1.2	3.0	5.9	4.2	4.3	5
	16 cm	−0.7	2.0	5.2	6.0	1.0	−2.5
Patient 3	4 cm	0.9	2.7	1.4	0.7	0.3	−2.2
	8 cm	1.1	4.1	5.2	4.0	1.9	−0.7
	16 cm	−0.7	3.3	5.7	7.4	0.6	−3.4
Patient 4	4 cm	−0.3	−0.7	−0.2	0.6	0.3	−0.6
	8 cm	−1.7	−2.1	−1.1	1.3	1.6	0.6
	16 cm	−6.2	−3.5	2.5	4.9	0.7	−1.7
Patient 5	4 cm	−2.8	−2.1	1.6	1.2	1.4	−0.9
	8 cm	−1.1	−2.3	6.6	5.0	6.6	3.3
	16 cm	−0.6	−4.5	3.0	8.5	8.3	3.4