Table 4.

Signal quality and rate of estimation of the SCG fiducial points in the the inflight and on-ground recording considered for the test. The signal quality is expressed as percent of artifact-free beats with respect to the total number of available beats. The rate of estimation of the fiducial points is expressed in percent of the artifact-free beats.

	In-Flight	On-Ground
SCG quality (artifact-free beats)	98.2	91.0
SCG fiducial points
MC	94.3	99.0
AO	99.7	96.7
AC	92.5	77.7
MO	96.6	72.9
All 4 fiducial points	85.1 (23,258 beats)	64.2 (13,716 beats)