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. 2021 Jan 27;129(1):017006. doi: 10.1289/EHP7495

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Figure 3 is an area graph plotting percentage of all Home Owners’ Loan Corporation polygons at given Normalized Difference Vegetation Index, ranging from 0 to 100 percent in increments of 25 (y-axis) across 2010 Normalized Difference Vegetation Index, ranging from 0.1 to 0.6 in unit increments (x-axis) for Grades A, B, C, and D. — Percentage of all HOLC polygons at a given mean annual 2010 NDVI stratified by HOLC grade. Note: HOLC, Home Owners’ Loan Corporation; NDVI, normalized difference vegetation index.