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. 2020 Dec 10;128(12):127007. doi: 10.1289/EHP6340

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Figure 2 is a map of Harris County and City of Houston, Texas, depicting highways, including interstates, state highways, and U.S. highways. A key depicts percentage of residential buildings in census block groups from excluded to 100 in increments of 20. — Percentage of residential buildings in Harris County U.S. Census block groups (CBGs) from 2017 Harris County Appraisal District Real and Personal Property Database. Hatched areas represent CBGs excluded from analyses because all buildings within these CBGs were identified as nonresidential or because residential buildings could not be categorized into building archetypes used in our indoor modeling.