Is it outdoors or indoors?
It is indoors.
    src        edge_attr  dst
0     0  to the right of   18
1     1  to the right of   18
2     1  to the right of   16
3     3  to the right of   13
4     3  to the right of    5
5     4   to the left of    9
6     4   to the left of   10
7     5   to the left of    3
8     5   to the left of   15
9     5   to the left of   18
10    6   to the left of    7
11    7  to the right of   15
12    7               on   10
13    7  to the right of    9
14    7  to the right of    6
15    8               on    4
16    8  to the right of   14
17    8  to the right of   11
18    9               on   10
19    9  to the right of    4
20    9   to the left of    7
21   10  to the right of    4
22   11   to the left of   17
23   11   to the left of    8
24   11  to the right of   18
25   13   to the left of    3
26   13   to the left of   16
27   13   to the left of   18
28   13   to the left of   14
29   14   to the left of   17
30   14      standing in   12
31   14   to the left of    8
32   14  to the right of   13
33   14      standing at    3
34   15  to the right of    5
35   15   to the left of    7
36   16  to the right of   13
37   16   to the left of    1
38   17  to the right of   11
39   17  to the right of   14
40   17               on    3
41   18  to the right of    5
42   18   to the left of    1
43   18  to the right of   13
44   18   to the left of   11
45   18   to the left of    0