# Verification checks (P4)

• Clean re-run (deleted outputs, re-ran analysis.py): SHA-256 of results.json, analytic.csv, exclusions.csv identical: PASS
• Independent recomputation using csv module (no pandas):
• n window 309 = growth+missing: PASS
• independent n_growth: PASS
• independent mean: PASS
• independent sub-means: PASS
• weighted sub-means = overall: PASS
• independent growth_2014_06: PASS
• independent growth_2016_07: PASS
• independent growth_2020_05: PASS
• independent growth_2022_06: PASS
• independent growth_2026_09: PASS
• max/min: PASS
• min<=means<=max: PASS
• analytic rows == n_analysed: PASS
• analytic growth recomputes: PASS
• vintage_used rule: 2026 vintage iff date>=2014-01: PASS
• exclusions identities: PASS
• 2025-10 absent from analytic: PASS
• magnitudes plausible (-3<g<10): PASS
• Input file hashes unchanged after work (incl. after misplaced-directory incident): PASS