{
  "matrix": [
    [
      "13/2",
      0,
      0
    ],
    [
      0,
      -2,
      0
    ],
    [
      4,
      0,
      2
    ]
  ],
  "totals": [
    650,
    -120,
    454
  ],
  "determinant": -26,
  "parameters": [
    100,
    60,
    27
  ],
  "qualification": "the complete source masks are already held; these totals do not recover where row changes occur"
}