Table 6 Description of the content of the folders named P# in the dataset. In this table, we explain only the most relevant files in the dataset.
Device | File | Column(s) | Description |
|---|---|---|---|
EARBUDS | <ID>-<ACTIVITY>-imu-left.csv <ID>-<ACTIVITY>-imu-right.csv | timestamp | Timestamp in UNIX format with millisecond resolution. |
ax/gx | X-axis of accelerometer/gyroscope sensor. | ||
ay/gy | Y-axis of accelerometer/gyroscope sensor. | ||
az/gz | Z-axis of accelerometer/gyroscope sensor. | ||
<ID>-<ACTIVITY>-ppg-left.csv <ID>-<ACTIVITY>-ppg-right.csv | timestamp | Timestamp in UNIX format. | |
green | PPG sensor green wavelength. | ||
ir | PPG sensor infrared wavelength. | ||
red | PPG sensor red wavelength. | ||
ZEPHYR | <ID>_Summary.csv | Timestamp | Timestamp in UNIX format with millisecond resolution. |
HR | Heart rate measured from the ECG sensor. | ||
BR | Breathing rate is measured from a pressure sensor in the strap. | ||
CoreTemp | Core temperature. | ||
Posture | Posture: 0° = subject vertical, 90° = subject prone, −90° = subject supine, ±180° = subject inverted. | ||
Activity | Vector magnitude of the three axial acceleration magnitudes over the previous 1 second, sampled at 100 Hz. | ||
PeakAccel | Peak acceleration magnitude from the previous second. | ||
BRAmplitude | Breathing rate amplitude is used for internal development only. | ||
HRV | Heart rate variability. | ||
ECGAmplitude | Uncalibrated ECG amplitude measured from the peak of the R wave to the peak of the S wave of the QRS complex |
