This bar chart displays average PM10 emissions during 2020 across municipalities in the Friuli Venezia Giulia region, sorted from highest to lowest values. The visualization includes a red dashed line marking the annual limit of 40 units, with a tooltip that appears on hover to show exact values for each location. Built with D3 v7, the chart uses `d3.csv` for data loading, `scaleLinear` and `scaleBand` for axes, and `d3.axisBottom` and `d3.axisLeft` for rendering. The SVG rendering includes animated transitions for tooltip opacity changes on mouse events.