The folder contains 108 paths made by the different users. The name of the path contains the real transportation mode used (e.g. path104_BUS).
Inside each folder there are three csv files. 

The table Acceleration.csv contains a progressive index of the observation, the timestamp and the accelerations along the three axes x, y and z.
The tabel StatusDetected.csv contains a progressive index of the observation, the timestamp the activity recorded and the confidence.
The table Gps.csv contains a progressive index of the observation, the timestamp, the latitude and longitude.