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. 2020 Jul 15;128(7):077003. doi: 10.1289/EHP6394

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Figure 1A is a map of 27 counties in Eagle Ford, plotting flare events in boundaries divided into two parts: study area and urban cities. A scale representing flares per square kilometer ranges from 1 to 7 in increments of 2. Figure 1B is a map of 27 counties in Eagle Ford, plotting oil and gas production wells. — Density of (A) nightly flare events and (B) oil and gas wells across the 27-county Eagle Ford study area, excluding urban areas. Data sources: VIIRS Nightfire (https://www.ngdc.noaa.gov/eog/viirs/) and DrillingInfo (2018) (now Enverus). Counties are delineated in yellow. Green boundaries delineate cities with more than 75,000 people, which were excluded from the analysis. Note: VIIRS, Visible Infrared Imaging Radiometer Suite.