How is the weather?
It is foggy.
    src        edge_attr  dst
0     0   to the left of    6
1     0   to the left of    4
2     0   to the left of    9
3     1   to the left of    8
4     2   to the left of    8
5     2  to the right of    3
6     2  to the right of    9
7     3   to the left of    2
8     3  to the right of    9
9     3  to the right of    6
10    4  to the right of    0
11    5   to the left of    8
12    6   to the left of    3
13    6  to the right of    0
14    8  to the right of    2
15    8  to the right of    1
16    8  to the right of    5
17    9   to the left of    3
18    9   to the left of    2
19    9  to the right of    0