{ signal: [
  { wave: '10x....10', node: '.........'},
  {                    node: '.ab......'},
  {                    node: '.X..c....'},
  {                    node: '.Y.....d.'},
  {                    node: '.Z......e'}
  ],
  edge: [
    'a-b t0',
    'X-c t1',
    'Y-d t2',
    'Z-e t3'
  ]
}