On which side of the image is the bus?
The bus is on the left of the image.
    src        edge_attr  dst
0     0  to the right of    9
1     0   to the left of    7
2     0   to the left of    3
3     0  to the right of    8
4     0  to the right of    1
..  ...              ...  ...
95   19  to the right of    0
96   19   to the left of   13
97   19  to the right of    1
98   19  to the right of    8
99   19   to the left of    7

[100 rows x 3 columns]