Are there any boxes to the left of the clock in the center?
Yes, there is a box to the left of the clock.
     src        edge_attr  dst
0      0               on    5
1      0  to the right of   24
2      0            below    1
3      0  to the right of   47
4      0  to the right of   32
..   ...              ...  ...
306   51   to the left of   17
307   51   to the left of   20
308   51   to the left of   44
309   51   to the left of   40
310   51   to the left of   38

[311 rows x 3 columns]