{
  "task_id": "F6-conf-02",
  "sample_start": "2010-01-04",
  "sample_end": "2019-12-31",
  "n_treated": 0,
  "baseline_metric": -0.042851,
  "model_metric": null,
  "effect_estimate": null,
  "effect_ci_low": null,
  "effect_ci_high": null,
  "conclusion": "premise_invalid",
  "feasibility": "infeasible",
  "feasibility_reason": "The file covers only 2010-01-04 to 2019-12-31; there are zero rows with post_cut = 1, so the post-cut mean change (and hence the effect) cannot be computed.",
  "data_issues": [
    {
      "issue": "first row has no preceding row, so no one-day change",
      "handling": "excluded from all change-based statistics (2497 changes from 2498 rows)"
    },
    {
      "issue": "file ends 2019-12-31 (README retrieval end_date=2019-12-31); post_cut=0 for all 2498 rows, so no observation on or after 2020-03-04 exists",
      "handling": "treated window empty; effect, interval, model RMSE and n_analysed set to null; post_cut not redefined and no external/proxy data substituted; conclusion premise_invalid"
    }
  ],
  "n_input_rows": {
    "gc5y_daily.csv": 2498
  },
  "n_analysed": null,
  "random_seed": null
}