Table 1.

Summary of heart rate data.

	Experiment #1 with Fitbit Charge HR	Experiment #2 with Basis Peak
Total number of samples	411,799	69,941a
Minimum number of samples per day	6147	961
Maximum number of samples per day	9469	1440
Average number of samples per day	8074	1371
Starting timestamp	2016-05-10 00:00:05 CET	2016-08-15 00:00:00 CET
Final timestamp	2016-06-29 23:58:55 CET	2016-10-04 23:59:00 CET
Device sampling frequency	Every 5 sb	32 times per secondc
Device recording frequency	Every 5–15 s	Every 1 min,
	i.e. 6–7 records per minute	i.e. 1 record per minute

^aOnly the samples where HR value is available (not equal to N/A), the total number of samples is 73,440.

^bInformation was obtained from a company representative response in the Fitbit community forum [14]

^cInformation was obtained from a company representative response in the Basis Peak forum [3] and [4] and from a prestige IT magazine [5].