This visualization displays the difference between actual and predicted interference levels for a wireless channel over time. It uses d3.line with curveBasis to render smoothed paths for each method, colored via an ordinal scale and organized with d3.nest. The chart includes a color legend generated by a custom colorLegend function, axis labels, and gridlines. Data is loaded from a CSV file containing timestamp and interference values, rendered as an SVG with d3.v5.