{
  "task_id": "F2-conf-04",
  "beta_hat": -0.25576772774872947,
  "alpha_hat": 0.18438835418210964,
  "r_squared": 0.40825082845620597,
  "se_iid": 0.019960092914910015,
  "se_hac": 0.03583463330296578,
  "hac_lags": 4,
  "beta_ci_low": -0.326002318421742,
  "beta_ci_high": -0.18553313707571695,
  "okun_negative_5pct": true,
  "mean_growth": 0.7535027550652363,
  "first_quarter": "1960Q1",
  "last_quarter": "2019Q4",
  "n_analysed": 240,
  "feasibility": "complete",
  "feasibility_reason": null,
  "data_issues": [
    {
      "issue": "UNRATE: missing (empty) value(s) at ['2025-10-01']",
      "handling": "outside the 1959Q4-2019Q4 levels window; ignored, no effect on estimates"
    }
  ],
  "n_input_rows": {
    "UNRATE.csv": 945,
    "GDPC1.csv": 319
  },
  "random_seed": null,
  "baseline_ci_iid_low": -0.2948887909900262,
  "baseline_ci_iid_high": -0.21664666450743272,
  "t_hac": -7.137445096377235,
  "p_value_hac": 9.508157930953398e-13,
  "resid_lag1_autocorr": 0.38935129370212984,
  "se_hac_sensitivity_by_lags": {
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    "2": 0.034227320236154,
    "4": 0.03583463330296578,
    "6": 0.03687902855135959,
    "8": 0.03713550417540173,
    "12": 0.03640885110228042
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  "mean_du": -0.008333333333333335
}