Table 1.

The levels of the CRI and the GMA (Dst index) as organized for the ANOVA analysis. The corresponding number of measurements and the mean HR values are provided

Levels	Intervals	Number of measurements	Mean HR (bpm)	CI (95%)
CRI
0	CRI ≤  − 3%	39	79.85	74.87–84.82
1	− 3% < CRI ≤  − 1%	1103	74.40	73.15–75.64
2	− 1% < CRI ≤ 0%	3410	73.32	72.60–74.04
3	0% < CRI ≤ 1%	3957	74.15	73.45–74.85
4	CRI > 1%	920	73.50	72.04–74.96
Dst index
0	Dst ≥ 0nT	2459	72.19	71.38–73.01
1	− 20nT < Dst < 0nT	5005	74.82	74.18–75.46
2	− 50nT < Dst ≤  − 20nT	1764	73.48	72.51–74.45
3	− 100nT < Dst ≤  − 50nT	187	72.26	69.60–74.91
4	Dst ≤  − 100nT	14	79.50	70.55–88.45