Wood Heat Index -- county firewood price estimates, snapshot 2026-09 Model v1.0.0, coefficient set v3. Provenance: backfilled_from_deployment (deployment 4ab6c6af) Tables (each as .csv and .parquet): county_estimates tier_counts Backfilled from the Cloudflare Pages deployment that served this month (4ab6c6af). It holds only what that deployment published: county_estimates, and tier_counts derived from it. county_evidence, model_run and coefficients were not archived at the time and are absent. License: the modeled outputs in this snapshot are licensed CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/). Underlying government inputs keep their own terms; their attribution strings follow. Cite as: Wood Heat Index (2026). County firewood price estimates, snapshot 2026-09, model v1.0.0 / coefficients v3. https://woodheatindex.com/data/ Attribution: This product uses the Census Bureau Data API but is not endorsed or certified by the Census Bureau. This product uses the HUD User Data API but is not endorsed or certified by HUD User. Climate normals: Palecki, Michael; Durre, Imke; Applequist, Scott; Arguez, Anothony; Lawrimore, Jay. 2021: U.S. Climate Normals 2020: U.S. Annual-Seasonal Climate Normals (1991-2020). NOAA National Centers for Environmental Information. Estimates are modeled, not an appraisal or a quote from any specific seller. Snapshots are immutable; a correction is published as a new suffixed snapshot. Documentation: https://woodheatindex.com/data/