This example shows a horizon chart displaying SO2 measurements over time for multiple monitoring addresses, with each horizontal band representing a different location and the color intensity indicating the measurement magnitude. The visualization uses D3 v6 to build the chart, leveraging d3.area, d3.scalePoint, and custom clipping paths to create the layered horizon effect. Data is loaded from a CSV file and preprocessed in JavaScript before being passed to the chart function. The SVG rendering approach employs reusable clip paths and color bands to show data beyond the base scale.