This interactive chart, built with React and D3.js, traces how a numeric value changes over time, with data points colored by threshold—green below 50, amber between 50 and 75, and red above 75. Dashed reference lines at 50 and 75 mark these risk zones, and hovering over a circle reveals the exact percentage. The visualization uses a time-scaled x-axis and a linear y-axis, rendering an SVG connected scatter plot from CSV data.