Each line of this file has six fields, separated by commas.
The 1st field is the robot ID number.
The 2nd is the time stamp in microseconds.
The 3rd, 4th and 5th fields contain the x, y and z coordinates of the position of the robot at that time, in millimetres. We can ignore the z coordinate.
The 6th field contains a single digit that encodes the robot's internal status.
Here is an example fragment of data from a log file, for robot ID 12.