Reproducibility package for comparative screening of heat, proxy transit access, and social vulnerability across five U.S. regions

This reproducibility package supports the article "Comparative Screening of Heat, Proxy Transit Access, and Social Vulnerability Across Five U.S. Regions." It contains executed analysis scripts, source, provenance, and checksum registries, field and formula dictionaries, derived block-group indicator and score tables, sensitivity and spatial-statistics outputs, publication tables, and figure-data tables. HEACS denotes the heat-exposed access score; E-HEACS denotes the equity-extended heat-exposed access score. These labels identify analytical scores, not a manuscript or software version. The analytical frame includes 2,093 U.S. Census block groups across five anchor-city regional study areas. Original Census, GTFS, Landsat, NLCD/MRLC, and OpenStreetMap source files are not redistributed; provider references, product identifiers, acquisition records, and checksums are included. Retained transit-access measures are proxy indicators based on Euclidean nearest-stop distance and qualifying scheduled departures, not final pedestrian-network accessibility measures.