{
 "object": "LowStep",
 "mesh": "LowStep/lowstep.ply",
 "marker_radius_mm": 8.0,
 "method": "upright-at-rest fit of marker centres to the mesh surface",
 "instances": {
  "LowStep": {
   "markers_obj_m": [
    [
     -0.32545,
     -0.07758,
     0.11451
    ],
    [
     -0.3086,
     0.11383,
     0.115
    ],
    [
     0.25562,
     0.06227,
     0.11381
    ],
    [
     0.22469,
     -0.13365,
     0.11369
    ]
   ],
   "from_session": "20261012/EC08/20261012_110610_session54",
   "rest_rows": [
    11961,
    13083
   ],
   "base_on_stack_of": 0,
   "fit_rms_mm": 3.87,
   "layout_m": [
    0.1922,
    0.1983,
    0.553,
    0.5666,
    0.5879,
    0.5977
   ],
   "windows_same_layout": 5,
   "independent_windows_agreeing": 3,
   "agree_mm": 10.0,
   "cross_check": [
    {
     "session": "20261012/P26/20261012_092954_session29",
     "name": "LowStep",
     "fit_rms_mm": 3.52,
     "marker_disagreement_mm": 4.2,
     "independent": true
    },
    {
     "session": "20261012/P26/20261012_092954_session29",
     "name": "LowStep",
     "fit_rms_mm": 3.55,
     "marker_disagreement_mm": 3.9,
     "independent": true
    },
    {
     "session": "20261012/P26/20261012_092954_session29",
     "name": "LowStep",
     "fit_rms_mm": 3.57,
     "marker_disagreement_mm": 3.7,
     "independent": true
    },
    {
     "session": "20261012/EC08/20261012_110610_session54",
     "name": "LowStep",
     "fit_rms_mm": 3.88,
     "marker_disagreement_mm": 0.6,
     "independent": false
    }
   ],
   "visual_check": {
    "ok": false,
    "date": "2026-10-21",
    "note": "20261012/EC08/20261012_110610_session54: mesh on the pushed trolley in some frames, beside the body where no step is visible in others; not confirmed"
   }
  }
 }
}