Junctions found by grouping 
  id  x     y     no [id  via ...] 
  1 181.4 173.3   2   2    1    5    2 
  2  47.3 180.3   2   1    1    8    3 
  3  69.8  48.0   3   9    4   10    5   11    6 
  4 218.3 140.1   3  12    7    5    8   13   10 
  5 191.5 140.2   3   1    2    4    8   14   10 
  6  43.0 146.7   2  15   11   16   12 
  7  69.3  82.0   3  17   13   18   14   19   15 
  8  52.0 156.0   1   2    3 
  9 200.0  45.0   1   3    4 
 10  67.0  66.0   1   3    5 
 11  59.0  36.0   1   3    6 
 12 233.0  92.0   1   4    7 
 13 196.0 140.0   1   4   10 
 14 216.0 139.0   1   5   10 
 15  24.0 147.0   1   6   11 
 16  24.0 149.0   1   6   12 
 17  56.0  63.0   1   7   13 
 18  32.0  82.0   1   7   14 
 19  55.0  64.0   1   7   15