A streamgraph displays three data series (AR, DJ, TP) as stacked, colored layers over time, using a silhouette offset to center the bands. Built with React and D3 v2, it loads CSV data and renders as SVG paths with animated transitions. The visualization includes axis labels, hover tooltips showing exact values, and mouse-following vertical guide lines. It uses d3.layout.stack, d3.svg.area, d3.time.scale, and d3.svg.axis with cardinal interpolation.