This stacked bar chart shows the distribution of passenger ratings across different categories (such as seat comfort, cabin staff service, and food) for various airlines. Each horizontal bar represents an airline, with colored segments showing the percentage of reviews for each rating level. The visualization uses d3.stack and d3.scaleOrdinal to create the stacked segments, with d3.axisBottom and d3.axisLeft for the axes. Hovering over a segment triggers a tooltip displaying the exact percentage for that rating category, implemented via mouseover/mousemove events. The data comes from a CSV of airline reviews, and the SVG rendering uses custom fonts from Yanone Kaffeesatz and Sofia.