ID	Time (days)	RRi (s)	PSD	RMSSD	SDNN
a	1	1.811429	530.23	55.13	35.39
b	1	1.116644	78.55	3.57	8.91
c	1	1.550283	NA	28.16	39.04
d	1	1.503757	475.62	9.22	24.63
e	1	1.527933	NA	19.57	100.72
f	1	1.241589	412.77	4.81	NA
g	1	1.08308	230.07	6.57	14.86
h	1	1.21996	44.14	3.24	8.52
i	1	1.557388	192.07	60.72	66.4
j	1	1.405633	109.9	29.25	68.37
a	5	2.383707	4299.4	63.2	76.18
b	5	1.858021	15435.28	71.43	134.31
c	5	NA	NA	NA	NA
d	5	2.068851	13010.52	37.54	278.13
e	5	2.307761	4339.74	91.02	203.26
f	5	1.978371	1182.63	10.52	
g	5	NA	NA	NA	NA
h	5	2.309026	7958.1	44.55	89.79
i	5	2.128067	3015.25	25.45	62.46
j	5	1.891434	2786.1	34.76	66.29
a	7	2.701775	11527.19	93.9	129.42
b	7	1.819138	16569.7	66.46	144.73
c	7	2.252434	NA	NA	1008.39
d	7	3.869684	127860.1	680.57	550.29
e	7	2.351315	31378.86	98.69	172.29
f	7	1.939163	NA	10.85	NA
g	7	2.903235	11790.7	51.41	120.63
h	7	2.652284	42044.04	97.63	217.65
i	7	2.769703	278019.9	691.57	490.31
j	7	2.340527	141871.9	49.57	179.09
a	10	3.15551	238751.3	542.53	451.79
b	10	1.539485	169681.5	216.18	278.34
c	10	2.779477	429826.2	524.04	572.65
d	10	2.770577	115051.5	27.69	49.54
e	10	NA	NA	NA	NA
f	10	2.430861	NA	35.09	NA
g	10	3.245212	206916.6	268.12	396.29
h	10	2.68222	240396.2	83.62	161.19
i	10	2.983439	512903.1	989.89	687.39
j	10	2.707535	533852.3	1007.82	684.24
a	15	3.404687	799794.4	1116.08	786.31
b	15	1.290272	NA	80.5	132.04
c	15	2.765323	274324.8	562.37	472.49
d	15	3.596086	NA	561.52	598.98
e	15	2.597415	209078.9	91.08	191.03
f	15	2.642062	19423.57	51	NA
g	15	NA	NA	NA	NA
h	15	3.142599	388074.9	114.86	226.01