Is the fence on the left side or on the right?
The fence is on the right of the image.
    src        edge_attr  dst
0     0   to the left of   11
1     0   to the left of   10
2     0  to the right of    3
3     0   to the left of   12
4     0   to the left of   13
..  ...              ...  ...
91   17   to the left of   12
92   17   to the left of   16
93   18   to the left of    2
94   18  to the right of   14
95   18  to the right of   17

[96 rows x 3 columns]