Is the mirror on the left?
No, the mirror is on the right of the image.
    src        edge_attr  dst
0     0  to the right of   20
1     0  to the right of    5
2     0  to the right of    4
3     0  to the right of   11
4     0  to the right of    9
..  ...              ...  ...
69   20   to the left of   15
70   20  to the right of    3
71   20   to the left of    0
72   20               of    3
73   21  to the right of   11

[74 rows x 3 columns]