{
  "target_markers_xyz": [
    [
      4.207898146986788,
      -0.8663078096432895,
      -0.157932294540158
    ],
    [
      4.204269099550825,
      -0.8490565584955962,
      0.050792267702054694
    ],
    [
      4.228160006207007,
      -0.5700842271664263,
      -0.18426045003020564
    ],
    [
      4.222771397014917,
      -0.551653109097095,
      0.026061499682205502
    ]
  ],
  "target_center_xyz": [
    4.216037286222805,
    -0.709008396620807,
    -0.06648050413289996
  ],
  "description": "4 individual corner-reflector target markers ('CalibrationTarget-Marker 1..4'), mean over ~630 raw OptiTrack frames for this position, transform-corrected into the published radar-centered frame (see calibration/axis_convention.json). target_center_xyz is the corresponding transformed rigid-body centroid."
}