How does the water near the can look, black or blue?
The water is black.
     src        edge_attr  dst
0      0  to the right of   13
1      0   to the left of    7
2      1   to the left of   29
3      1   to the left of    5
4      1   to the left of   15
..   ...              ...  ...
142   31  to the right of    3
143   31   to the left of    4
144   32  to the right of   16
145   32  to the right of    8
146   32  to the right of    5

[147 rows x 3 columns]