{
  "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": 392070.446735,
  "median_price_per_m2_valid": 2984.93695,
  "feasibility": "partial",
  "feasibility_reason": "36 of the 1200 records in the provider's control totals could not be analysed: 36 export lines (sale_id S00700-S00735) are corrupted with garbled characters and wrong field counts, so their fields cannot be read unambiguously; they account for an implied 14917000 CAD of the control price sum. Per-municipality shortfall vs control: {'Gatineau': 11, 'Laval': 8, 'Sherbrooke': 7, 'Levis': 3, 'Longueuil': 7}.",
  "data_issues": [
    {
      "issue": "36 data lines (sale_id numbers S00700-S00735, a contiguous block) are garbled: wrong number of fields and/or non-conforming sale_id with random characters",
      "handling": "excluded as unreadable; not reconstructed or imputed; their implied price total is reported as sum_price_unreadable_implied"
    },
    {
      "issue": "25 records store price_cad as a quoted string with thousands separators (e.g. \"280,000\")",
      "handling": "read unambiguously by removing the comma separators (standard CSV quoting); records retained"
    }
  ],
  "n_input_rows": {
    "sales.csv": 1200
  },
  "random_seed": null,
  "baseline_n_lines_minus_control": 0,
  "n_price_thousands_separator": 25,
  "n_by_municipality_valid": {
    "Gatineau": 335,
    "Laval": 274,
    "Sherbrooke": 209,
    "Levis": 159,
    "Longueuil": 187
  },
  "n_by_municipality_shortfall": {
    "Gatineau": 11,
    "Laval": 8,
    "Sherbrooke": 7,
    "Levis": 3,
    "Longueuil": 7
  },
  "mean_price_unreadable_implied": 414361.111111,
  "sale_date_min_valid": "2021-01-01",
  "sale_date_max_valid": "2022-12-31"
}