Which side is the balloon on?
The balloon is on the right of the image.
     src        edge_attr  dst
0      0  to the right of   12
1      0  to the right of   11
2      0  to the right of    6
3      0  to the right of    4
4      0  to the right of   10
..   ...              ...  ...
101   21   to the left of    6
102   21   to the left of   12
103   21   to the left of    4
104   21  to the right of   16
105   21  to the right of   20

[106 rows x 3 columns]