What kind of device is it?
The device is a camera.
    src        edge_attr  dst
0     0   to the left of   19
1     0   to the left of    5
2     1  to the right of   10
3     1  to the right of   17
4     1  to the right of    5
..  ...              ...  ...
61   19  to the right of    0
62   19  to the right of   17
63   20   to the left of   17
64   20   to the left of   15
65   21   to the left of   17

[66 rows x 3 columns]