A network-style comparison of airline delay proportions is shown as a multi-series area chart, with each colored band representing a delay category. The visualization uses D3 v6, loading data from a CSV file and rendering with SVG. The code applies `d3.area`, `d3.scaleBand`, and `d3.scaleLinear` to position the areas, with a legend mapped from `d3.schemeCategory10`. Axes are labeled for airlines and delay proportion, and the data is fetched asynchronously via `d3.csv`.