How's the weather?
It is overcast.
    src        edge_attr  dst
0     1  to the right of    5
1     1  to the right of    7
2     1  to the right of    6
3     4      waiting for    7
4     4   to the left of    7
5     5   to the left of    1
6     5  to the right of   11
7     5  to the right of   12
8     6   to the left of    1
9     6   to the left of    9
10    7               in    2
11    7   to the left of    1
12    7   to the left of    9
13    7  to the right of    4
14    7  to the right of    8
15    7  to the right of   10
16    8   to the left of    7
17    9  to the right of    7
18    9  to the right of    6
19   10   to the left of    7
20   11   to the left of    5
21   12   to the left of    5