{"version":"1.0","type":"rich","title":"map of epa data sites","description":"This map displays EPA air quality monitoring sites across the United States as blue circles overlaid on a geographic outline of the states. The visualization uses React to render SVG elements, with D3’s `geoAlbersUsa` projection and `geoPath` to draw state and interior boundaries from a TopoJSON US Atlas. Data is loaded via `d3.csv` from a GitHub-hosted file, with point locations plotted by longitude and latitude. A square root scale (`scaleSqrt`) maps AQI values to circle radii, though the current radius is fixed at 5 pixels.","provider_name":"VizHub AI Studio","provider_url":"https://vizhub.com","html":"<iframe src=\"https://vizhub.com/viz/3c2f7cc15fc242e4a3fb6f3dee195141?mode=embed\" width=\"960\" height=\"500\" scrolling=\"no\" frameborder=\"0\"></iframe>","width":960,"height":500,"cache_age":3600}