1{2 "task_id": "F1-conf-01",3 "first_growth_month": "2001-01",4 "last_month": "2026-09",5 "n_months_window": 309,6 "n_months_growth": 308,7 "n_months_missing_growth": 1,8 "missing_growth_months": [9 "2025-10"10 ],11 "n_analysed": 308,12 "mean_growth_12m": 2.57412,13 "mean_growth_12m_2001_2013": 2.361215,14 "mean_growth_12m_2014_2026": 2.792628,15 "n_growth_2001_2013": 156,16 "n_growth_2014_2026": 152,17 "growth_2014_06": 2.097634,18 "growth_2016_07": 0.868363,19 "growth_2020_05": 0.198201,20 "growth_2022_06": 8.979361,21 "growth_2026_09": 3.717251,22 "max_growth_12m": 8.979361,23 "max_growth_month": "2022-06",24 "min_growth_12m": -1.958761,25 "min_growth_month": "2009-07",26 "sd_growth_12m": 1.740788,27 "feasibility": "partial",28 "feasibility_reason": "g_t not computable for 2025-10: the 2026-10-28 vintage reports no CPI level for 2025-10 and imputation is not allowed; all summaries use the 308 computable months.",29 "data_issues": [30 {31 "issue": "cpi_vintage_2026-10-28.csv has no index value (empty cpi) for 2025-10",32 "handling": "Not imputed or back-filled from another source; growth for that month (and for the month 12 later) is reported as missing and counted."33 },34 {35 "issue": "The two vintages overlap for 30 months (2014-01 to 2016-06) and differ in 30 of them (revisions; max abs diff 0.455 index points)",36 "handling": "Per the availability rule, the 2026-10-28 vintage value is used for every month it covers; 2016-07-15 values only before 2014-01. Growth rates for 2014-01..2014-12 therefore combine a 2026-vintage numerator with a 2016-vintage base."37 },38 {39 "issue": "cpi_assembled.csv contains assembly errors: months absent ['2016-07']; months beyond the sources ['2026-10']; 152 months whose value differs from the most-recent-vintage value (30 months 2014-01.. taken from the 2016 vintage although the 2026 vintage covers them; values after the missing month shifted one month later)",40 "handling": "File read only for auditing; all computations use the two authoritative vintage files directly."41 },42 {43 "issue": "README SHA-256 values refer to the raw downloads before reformatting, so they cannot be matched against the provided files",44 "handling": "Recorded SHA-256 of provided files in out/state/data_audit.md; values not otherwise verifiable offline."45 }46 ],47 "n_input_rows": {48 "cpi_vintage_2016-07-15.csv": 834,49 "cpi_vintage_2026-10-28.csv": 153,50 "cpi_assembled.csv": 95751 },52 "random_seed": null53}