{"version":"1.0","type":"rich","title":"new data","description":"A choropleth map of U.S. counties shows ozone levels for each year from 2000 to 2021, with a vertical slider and play button to animate through time. County colors use a sequential yellow-green-blue scale, while state boundaries are drawn as thin lines. Built with React and D3 v5, it uses `geoPath` with a fitted Albers projection, a TopoJSON atlas, and a Map lookup from CSV data. Hovering a county reveals its name and ozone value.","provider_name":"VizHub AI Studio","provider_url":"https://vizhub.com","html":"<iframe src=\"https://vizhub.com/viz/b1f7aa31d9294339830e542012781f05?mode=embed\" width=\"960\" height=\"500\" scrolling=\"no\" frameborder=\"0\"></iframe>","width":960,"height":500,"cache_age":3600}