{
  "task_id": "F1-conf-04",
  "n_records_control": 1200,
  "n_valid_records": 1164,
  "n_unreadable_records": 36,
  "n_analysed": 1164,
  "sum_price_control": 471287000,
  "sum_price_valid": 456370000,
  "sum_price_unreadable_implied": 14917000,
  "mean_price_valid": 392070.4467,
  "median_price_per_m2_valid": 2984.937,
  "feasibility": "partial",
  "feasibility_reason": "36 of the 1200 records in the provider's control count could not be analysed: 36 export lines are garbled (corrupted characters / wrong field count) and cannot be read unambiguously; they account for an implied 14917000 CAD of the control price sum (municipality gaps vs control: {'Gatineau': 11, 'Laval': 8, 'Levis': 3, 'Longueuil': 7, 'Sherbrooke': 7}).",
  "data_issues": [
    {
      "issue": "36 data lines (file lines 701-736) are garbled (random characters, wrong number of fields) and cannot be read",
      "handling": "excluded from the analytic dataset; not reconstructed or imputed; their count and implied price sum are reported via reconciliation with the control totals"
    },
    {
      "issue": "25 price_cad values are exported as quoted strings with comma thousands separators (e.g. \"280,000\")",
      "handling": "kept: the quoted field is unambiguous under CSV quoting; commas removed and parsed as integer CAD"
    }
  ],
  "n_input_rows": {
    "sales.csv": 1200
  },
  "random_seed": null,
  "n_by_municipality_valid": {
    "Gatineau": 335,
    "Laval": 274,
    "Levis": 159,
    "Longueuil": 187,
    "Sherbrooke": 209
  },
  "n_by_municipality_gap_vs_control": {
    "Gatineau": 11,
    "Laval": 8,
    "Levis": 3,
    "Longueuil": 7,
    "Sherbrooke": 7
  },
  "mean_price_unreadable_implied": 414361.11,
  "sale_date_min_valid": "2021-01-01",
  "sale_date_max_valid": "2022-12-31"
}