Are the shelves in the bottom part of the photo?
No, the shelves are in the top of the image.
    src        edge_attr  dst
0     0  to the right of    7
1     0  to the right of    9
2     2  to the right of    7
3     2  to the right of    9
4     3  to the right of   17
..  ...              ...  ...
79   21   to the left of   10
80   21  to the right of   16
81   21  to the right of   12
82   21  to the right of   19
83   21  to the right of   18

[84 rows x 3 columns]