{"version":"1.0","type":"rich","title":"PM2.5 by County","description":"A minimal data-loading demonstration reports basic facts about a county-level PM2.5 dataset from 2000 to 2018. Using `d3.csv` to fetch a gist-hosted CSV file, it prints the file size in kilobytes, the total row count, and the number of columns into a large `<pre>` element via `d3.csvFormat` and `textContent`. The page also shows commented-out alternatives with `fetch`, `async`/`await`, and `d3.csvParse`, highlighting different ways to handle asynchronous data in D3 v5.","provider_name":"VizHub AI Studio","provider_url":"https://vizhub.com","html":"<iframe src=\"https://vizhub.com/viz/2a7a1000c36e461582667eb8ce909d91?mode=embed\" width=\"960\" height=\"500\" scrolling=\"no\" frameborder=\"0\"></iframe>","width":960,"height":500,"cache_age":3600}