Some other findings (iOS). I synced another tag and uploaded in CSV
- Most the data has a 5-minute interval
- Some of rows have the following pattern
** Two rows per a 5-minute period
** The time difference between the two rows seldom is 150 seconds. It can be like 295 and 6 seconds or 149 and 152 seconds
** Only one of the rows in a pair has acceleration, voltage, movement counter and transmit power data - There were multiple gaps, some as long as 10 hours