whole genealogy rounding interior field.json

{
  "boundaries": [
    "Adam",
    "Seth",
    "Enosh",
    "Kenan",
    "Mahalalel",
    "Jared",
    "Enoch",
    "Methuselah",
    "Lamech",
    "Noah",
    "Shem",
    "Arphaxad",
    "Shelah",
    "Eber",
    "Peleg",
    "Reu",
    "Serug",
    "Nahor",
    "Terah",
    "terminal"
  ],
  "field": [
    0,
    0,
    0,
    0,
    0,
    0,
    0,
    0,
    0,
    -4,
    -4,
    -4,
    -2,
    0,
    0,
    0,
    0,
    0,
    0,
    0
  ],
  "nonzero": [
    {
      "boundary": "Noah",
      "difference_error": -4
    },
    {
      "boundary": "Shem",
      "difference_error": -4
    },
    {
      "boundary": "Arphaxad",
      "difference_error": -4
    },
    {
      "boundary": "Shelah",
      "difference_error": -2
    }
  ],
  "recurrence": "field[i]-field[i+1]=local difference_error[i]",
  "scope": "same terminal, matched19-row domain; native insertion has zero extra rounding error"
}