{
  "step": "C420",
  "harmonic_trials": [
    {
      "station": "Noah birth",
      "held_upper": 3899,
      "input_lower": 2841,
      "operator": "E",
      "multiplier": {
        "numerator": 25,
        "denominator": 23
      },
      "expanded_gap": {
        "numerator": 1150,
        "denominator": 1
      },
      "output": {
        "numerator": 2749,
        "denominator": 1
      },
      "source_record_indices": [],
      "source_records": []
    },
    {
      "station": "Noah birth",
      "held_upper": 3899,
      "input_lower": 2841,
      "operator": "E2",
      "multiplier": {
        "numerator": 625,
        "denominator": 529
      },
      "expanded_gap": {
        "numerator": 1250,
        "denominator": 1
      },
      "output": {
        "numerator": 2649,
        "denominator": 1
      },
      "source_record_indices": [
        15
      ],
      "source_records": [
        {
          "tradition": "MT",
          "gear": 3,
          "role": "Flood close",
          "Cainan": 1,
          "Terah60": 1,
          "full430": 1,
          "center": 2649,
          "base_native_Cainan": 0,
          "base_center": 2459
        }
      ],
      "E_intermediate": {
        "numerator": 2749,
        "denominator": 1
      },
      "intermediate_source_record_indices": [],
      "both_E_steps_source_admitted": false
    },
    {
      "station": "Noah birth",
      "held_upper": 3899,
      "input_lower": 2841,
      "operator": "P",
      "multiplier": {
        "numerator": 70,
        "denominator": 69
      },
      "expanded_gap": {
        "numerator": 3220,
        "denominator": 3
      },
      "output": {
        "numerator": 8477,
        "denominator": 3
      },
      "source_record_indices": [],
      "source_records": []
    },
    {
      "station": "Noah birth",
      "held_upper": 3899,
      "input_lower": 2841,
      "operator": "J",
      "multiplier": {
        "numerator": 300,
        "denominator": 299
      },
      "expanded_gap": {
        "numerator": 13800,
        "denominator": 13
      },
      "output": {
        "numerator": 36887,
        "denominator": 13
      },
      "source_record_indices": [],
      "source_records": []
    },
    {
      "station": "Shem birth",
      "held_upper": 3399,
      "input_lower": 2341,
      "operator": "E",
      "multiplier": {
        "numerator": 25,
        "denominator": 23
      },
      "expanded_gap": {
        "numerator": 1150,
        "denominator": 1
      },
      "output": {
        "numerator": 2249,
        "denominator": 1
      },
      "source_record_indices": [],
      "source_records": []
    },
    {
      "station": "Shem birth",
      "held_upper": 3399,
      "input_lower": 2341,
      "operator": "E2",
      "multiplier": {
        "numerator": 625,
        "denominator": 529
      },
      "expanded_gap": {
        "numerator": 1250,
        "denominator": 1
      },
      "output": {
        "numerator": 2149,
        "denominator": 1
      },
      "source_record_indices": [],
      "source_records": [],
      "E_intermediate": {
        "numerator": 2249,
        "denominator": 1
      },
      "intermediate_source_record_indices": [],
      "both_E_steps_source_admitted": false
    },
    {
      "station": "Shem birth",
      "held_upper": 3399,
      "input_lower": 2341,
      "operator": "P",
      "multiplier": {
        "numerator": 70,
        "denominator": 69
      },
      "expanded_gap": {
        "numerator": 3220,
        "denominator": 3
      },
      "output": {
        "numerator": 6977,
        "denominator": 3
      },
      "source_record_indices": [],
      "source_records": []
    },
    {
      "station": "Shem birth",
      "held_upper": 3399,
      "input_lower": 2341,
      "operator": "J",
      "multiplier": {
        "numerator": 300,
        "denominator": 299
      },
      "expanded_gap": {
        "numerator": 13800,
        "denominator": 13
      },
      "output": {
        "numerator": 30387,
        "denominator": 13
      },
      "source_record_indices": [],
      "source_records": []
    },
    {
      "station": "Noah death",
      "held_upper": 2949,
      "input_lower": 1891,
      "operator": "E",
      "multiplier": {
        "numerator": 25,
        "denominator": 23
      },
      "expanded_gap": {
        "numerator": 1150,
        "denominator": 1
      },
      "output": {
        "numerator": 1799,
        "denominator": 1
      },
      "source_record_indices": [],
      "source_records": []
    },
    {
      "station": "Noah death",
      "held_upper": 2949,
      "input_lower": 1891,
      "operator": "E2",
      "multiplier": {
        "numerator": 625,
        "denominator": 529
      },
      "expanded_gap": {
        "numerator": 1250,
        "denominator": 1
      },
      "output": {
        "numerator": 1699,
        "denominator": 1
      },
      "source_record_indices": [],
      "source_records": [],
      "E_intermediate": {
        "numerator": 1799,
        "denominator": 1
      },
      "intermediate_source_record_indices": [],
      "both_E_steps_source_admitted": false
    },
    {
      "station": "Noah death",
      "held_upper": 2949,
      "input_lower": 1891,
      "operator": "P",
      "multiplier": {
        "numerator": 70,
        "denominator": 69
      },
      "expanded_gap": {
        "numerator": 3220,
        "denominator": 3
      },
      "output": {
        "numerator": 5627,
        "denominator": 3
      },
      "source_record_indices": [],
      "source_records": []
    },
    {
      "station": "Noah death",
      "held_upper": 2949,
      "input_lower": 1891,
      "operator": "J",
      "multiplier": {
        "numerator": 300,
        "denominator": 299
      },
      "expanded_gap": {
        "numerator": 13800,
        "denominator": 13
      },
      "output": {
        "numerator": 24537,
        "denominator": 13
      },
      "source_record_indices": [],
      "source_records": []
    },
    {
      "station": "Shem death",
      "held_upper": 2799,
      "input_lower": 1741,
      "operator": "E",
      "multiplier": {
        "numerator": 25,
        "denominator": 23
      },
      "expanded_gap": {
        "numerator": 1150,
        "denominator": 1
      },
      "output": {
        "numerator": 1649,
        "denominator": 1
      },
      "source_record_indices": [],
      "source_records": []
    },
    {
      "station": "Shem death",
      "held_upper": 2799,
      "input_lower": 1741,
      "operator": "E2",
      "multiplier": {
        "numerator": 625,
        "denominator": 529
      },
      "expanded_gap": {
        "numerator": 1250,
        "denominator": 1
      },
      "output": {
        "numerator": 1549,
        "denominator": 1
      },
      "source_record_indices": [],
      "source_records": [],
      "E_intermediate": {
        "numerator": 1649,
        "denominator": 1
      },
      "intermediate_source_record_indices": [],
      "both_E_steps_source_admitted": false
    },
    {
      "station": "Shem death",
      "held_upper": 2799,
      "input_lower": 1741,
      "operator": "P",
      "multiplier": {
        "numerator": 70,
        "denominator": 69
      },
      "expanded_gap": {
        "numerator": 3220,
        "denominator": 3
      },
      "output": {
        "numerator": 5177,
        "denominator": 3
      },
      "source_record_indices": [],
      "source_records": []
    },
    {
      "station": "Shem death",
      "held_upper": 2799,
      "input_lower": 1741,
      "operator": "J",
      "multiplier": {
        "numerator": 300,
        "denominator": 299
      },
      "expanded_gap": {
        "numerator": 13800,
        "denominator": 13
      },
      "output": {
        "numerator": 22587,
        "denominator": 13
      },
      "source_record_indices": [],
      "source_records": []
    },
    {
      "station": "selected Flood boundary",
      "held_upper": 3299,
      "input_lower": 2241,
      "operator": "E",
      "multiplier": {
        "numerator": 25,
        "denominator": 23
      },
      "expanded_gap": {
        "numerator": 1150,
        "denominator": 1
      },
      "output": {
        "numerator": 2149,
        "denominator": 1
      },
      "source_record_indices": [],
      "source_records": []
    },
    {
      "station": "selected Flood boundary",
      "held_upper": 3299,
      "input_lower": 2241,
      "operator": "E2",
      "multiplier": {
        "numerator": 625,
        "denominator": 529
      },
      "expanded_gap": {
        "numerator": 1250,
        "denominator": 1
      },
      "output": {
        "numerator": 2049,
        "denominator": 1
      },
      "source_record_indices": [],
      "source_records": [],
      "E_intermediate": {
        "numerator": 2149,
        "denominator": 1
      },
      "intermediate_source_record_indices": [],
      "both_E_steps_source_admitted": false
    },
    {
      "station": "selected Flood boundary",
      "held_upper": 3299,
      "input_lower": 2241,
      "operator": "P",
      "multiplier": {
        "numerator": 70,
        "denominator": 69
      },
      "expanded_gap": {
        "numerator": 3220,
        "denominator": 3
      },
      "output": {
        "numerator": 6677,
        "denominator": 3
      },
      "source_record_indices": [],
      "source_records": []
    },
    {
      "station": "selected Flood boundary",
      "held_upper": 3299,
      "input_lower": 2241,
      "operator": "J",
      "multiplier": {
        "numerator": 300,
        "denominator": 299
      },
      "expanded_gap": {
        "numerator": 13800,
        "denominator": 13
      },
      "output": {
        "numerator": 29087,
        "denominator": 13
      },
      "source_record_indices": [],
      "source_records": []
    }
  ],
  "sourced_endpoint_hits": [
    {
      "station": "Noah birth",
      "held_upper": 3899,
      "input_lower": 2841,
      "operator": "E2",
      "multiplier": {
        "numerator": 625,
        "denominator": 529
      },
      "expanded_gap": {
        "numerator": 1250,
        "denominator": 1
      },
      "output": {
        "numerator": 2649,
        "denominator": 1
      },
      "source_record_indices": [
        15
      ],
      "source_records": [
        {
          "tradition": "MT",
          "gear": 3,
          "role": "Flood close",
          "Cainan": 1,
          "Terah60": 1,
          "full430": 1,
          "center": 2649,
          "base_native_Cainan": 0,
          "base_center": 2459
        }
      ],
      "E_intermediate": {
        "numerator": 2749,
        "denominator": 1
      },
      "intermediate_source_record_indices": [],
      "both_E_steps_source_admitted": false
    }
  ],
  "counts": {
    "station_pairs": 5,
    "operator_trials": 20,
    "sourced_output_trials": 1,
    "E_sourced_outputs": 0,
    "E2_sourced_outputs": 1,
    "complete_E2_ladders": 0
  },
  "interpretation": "These are specified gap-scaling diagnostics about already fixed upper coordinates, not permission to use J as a calendar date operator. E2 endpoint membership is separated from the two sourced E steps. Source roles and contexts remain on every output record; no inferred intermediate becomes a source."
}