What's in the parking lot?
The buses are in the parking lot.
     src        edge_attr  dst
0      0   to the left of   10
1      0   to the left of    3
2      0   to the left of   11
3      0   to the left of    1
4      0   to the left of    5
..   ...              ...  ...
230   36  to the right of   27
231   37   to the left of    5
232   37  to the right of   13
233   37   to the left of    3
234   37   to the left of   33

[235 rows x 3 columns]