Fig. 2
From: Comparison of HRV indices obtained from ECG and SCG signals from CEBS database

Linear model describing the correlation between mean NN derived from SCG and mean NN calculated from SCG using tested algorithm
From: Comparison of HRV indices obtained from ECG and SCG signals from CEBS database
Linear model describing the correlation between mean NN derived from SCG and mean NN calculated from SCG using tested algorithm