Is it foggy?
No, it is clear.
    src        edge_attr  dst
0     0  to the right of   10
1     0  to the right of    9
2     0  to the right of   15
3     0  to the right of   14
4     0   to the left of    3
..  ...              ...  ...
85   15   to the left of    1
86   15  to the right of   14
87   15  to the right of   10
88   15   to the left of    9
89   15  to the right of    5

[90 rows x 3 columns]