This atlas map visualizes global GDP per capita for the year 2020, using a color gradient from yellow to blue to represent the quantile distribution of the data. Countries with missing data appear in gray. The map is rendered with the D3.js library, using `geoNaturalEarth1` for the projection, `geoPath` for country outlines, and `geoGraticule` for the graticule and outline layers. GDP data is fetched from a CSV file, while country geometries are loaded from a TopoJSON world atlas.