1# Checks (P4) — 2026-10-302- Clean re-run of out/analysis.py (outputs deleted first): results.json and analytic.csv byte-identical: PASS3- n_valid+n_unreadable==control: PASS4- n_analysed==n_valid: PASS5- analytic rows==n_analysed: PASS6- analytic price sum==sum_price_valid: PASS7- implied sum identity: PASS8- mean==sum/n: PASS9- median ppm2 recomputed: PASS10- exclusions chain: PASS11- ids unique: PASS12- muni shortfall sums to n_unreadable: PASS13- implied mean of missing plausible (between min,max of valid): PASS14- feasibility partial since n_unreadable>0: PASS15- Magnitudes: baseline control sum 471,287,000 vs valid 456,370,000 (96.8%); valid count 1164/1200 (97.0%); consistent.16