Is the mirror on the left side or on the right of the picture?
The mirror is on the left of the image.
     src        edge_attr  dst
0      0  to the right of   36
1      0   to the left of   35
2      0   to the left of   19
3      0  to the right of   17
4      0   to the left of   34
..   ...              ...  ...
251   35   to the left of   34
252   35  to the right of    0
253   36   to the left of    1
254   36   to the left of    0
255   36   to the left of   22

[256 rows x 3 columns]