This example presents an interactive dashboard for exploring air pollution data across Indian states. It uses D3.js (v6) with SVG rendering to display multi-line charts tracking yearly levels of pollutants like SO2, NO2, RSPM, and SPM for a selected state via a dropdown menu. It also renders bar charts using `d3.rollups` and `d3.mean` to compare average pollutant concentrations across states. The data is loaded from a CSV file using `d3.csv`.