This example visualizes air traffic passenger statistics for San Francisco Airport from 2005 to 2019, showing trends for multiple airlines such as Alaska and American. Multi-line charts display passenger counts over time for each carrier, with lines distinguished by color. The visualization is rendered as SVG with animation using D3.js v4, leveraging D3 scales and axes to map dates and passenger numbers. The data is embedded directly in the page's JavaScript, and the interface is styled with the Bulma CSS framework.