Which side is the shelf on?
The shelf is on the right of the image.
    src        edge_attr  dst
0     0  to the right of    6
1     0  to the right of    4
2     1  to the right of    6
3     1  to the right of    4
4     2  to the right of   11
..  ...              ...  ...
56   13               on    2
57   14  to the right of   12
58   14  to the right of   11
59   14   to the left of   10
60   14   to the left of    5

[61 rows x 3 columns]