This visualization displays daily temperature trends for New York, San Francisco, and Austin over several months, using colored multi-series line charts rendered with SVG and animation. The code employs D3 v7’s `d3.line`, `d3.scaleTime`, and `d3.scaleOrdinal` to map the tab-separated dataset, while hover and click interactions—implemented via mouse event handlers—temporarily gray out or hide individual city lines. Axes are generated with `d3.axisBottom` and `d3.axisLeft` to show dates and temperatures in Fahrenheit.