{"version":"1.0","type":"rich","title":"Fork of Fork of Hello VizHub","description":"This visualization shows daily air quality measurements from a Phoenix EPA monitoring site, comparing mean concentrations of four pollutants (NO₂, O₃, SO₂, CO) and an overall AQI value across dates in early January 2000. It renders as a grouped bar chart using D3 v6, with `d3.scaleBand` for the date and pollutant groupings, `d3.scaleLinear` for the y-axis, and `d3.schemeSet2` for categorical colors. Hovering over bars triggers a tooltip via D3’s mouse events. The SVG chart loads data from a CSV file, parsing dates with `d3.timeParse` and formatting axis ticks with `d3.timeFormat`.","provider_name":"VizHub AI Studio","provider_url":"https://vizhub.com","html":"<iframe src=\"https://vizhub.com/viz/a8c4421d11b0449ebf70aa8fab2217c5?mode=embed\" width=\"960\" height=\"500\" scrolling=\"no\" frameborder=\"0\"></iframe>","width":960,"height":500,"cache_age":3600}