Are the metal boxes in the top of the picture?
No, the boxes are in the bottom of the image.
     src        edge_attr  dst
0      0   to the left of    3
1      0  to the right of   16
2      0  to the right of   13
3      1  to the right of    7
4      1  to the right of    6
..   ...              ...  ...
105   24  to the right of   23
106   24  to the right of   17
107   24  to the right of    4
108   24  to the right of   13
109   25               of   20

[110 rows x 3 columns]