Are these printers or cell phones?
These are cell phones.
    src        edge_attr  dst
0     0  to the right of   14
1     0  to the right of   13
2     0  to the right of    5
3     0  to the right of   12
4     0  to the right of   19
..  ...              ...  ...
73   19   to the left of   18
74   19   to the left of   16
75   19   to the left of    7
76   19   to the left of    6
77   19   to the left of    0

[78 rows x 3 columns]