What's the roof covering?
The roof is covering the clock.
     src        edge_attr  dst
0      0  to the right of   24
1      0  to the right of    7
2      0  to the right of    1
3      0  to the right of   10
4      1   to the left of   25
..   ...              ...  ...
111   28  to the right of   26
112   28  to the right of   20
113   28  to the right of   11
114   28  to the right of   25
115   28  to the right of    1

[116 rows x 3 columns]