This line chart displays monthly airline passenger load factors for six major airports, with each airport represented by a distinct colored line and a matching legend. The data, loaded from a CSV file, is parsed and grouped by airport using D3 v7’s data join and scales. The visualization uses `d3.scaleLinear` for axes, `d3.line` to generate SVG paths, `d3.scaleOrdinal` with `d3.schemeCategory10` for colors, and `d3.axisBottom` and `d3.axisLeft` for the axes. The SVG rendering approach is used throughout.