Is the tower on the left side?
Yes, the tower is on the left of the image.
    src        edge_attr  dst
0     0  to the right of   13
1     1   to the left of    2
2     1  to the right of   16
3     1   to the left of   18
4     1  to the right of   13
..  ...              ...  ...
81   20   to the left of    7
82   20   to the left of    9
83   20   to the left of   13
84   20   to the left of   15
85   20   to the left of   12

[86 rows x 3 columns]