[
  [
    {
      "namespace": "data",
      "name": "brush_store",
      "scope": [],
      "value": [{
        "unit": "",
        "fields": [{"field": "distance", "channel":  "x", "type": "R"}],
        "values": [[0, 600]]
      }]
    }
  ], [
    {
      "namespace": "data",
      "name": "brush_store",
      "scope": [],
      "value": [{
        "unit": "",
        "fields": [{"field": "distance", "channel":  "x", "type": "R"}],
        "values": [[900, 600]]
      }]
    }, {
      "namespace": "data",
      "name": "brush_store",
      "scope": [],
      "value": [{
        "unit": "",
        "fields": [{"field": "delay", "channel":  "x", "type": "R"}],
        "values": [[40, 120]]
      }]
    }
  ]
]