Is the mask blue or brown?
The mask is brown.
     src        edge_attr  dst
0      0  to the right of   24
1      0  to the right of   17
2      0  to the right of   26
3      0  to the right of    2
4      0  to the right of    6
..   ...              ...  ...
233   35   to the left of   12
234   35  to the right of   13
235   35   to the left of   11
236   35  to the right of    9
237   35   to the left of   20

[238 rows x 3 columns]