Table 4.

Distribution of SDNN error, showing the mean and SD across all subjects, and the quantiles on the distribution of SDNN error at 0.1, 0.25, 0.75, and 0.9

	Mean	SD	0.25	0.5	0.75	0.9
rest	0.012	0.011	0.004	0.009	0.016	0.022
stress	0.132	0.036	0.111	0.133	0.166	0.179
recovery	0.006	0.014	0.001	0.003	0.006	0.015
free	0.030	0.022	0.009	0.028	0.049	0.061