This visualization demonstrates temperature trends over time for three cities—New York, San Francisco, and Austin—using a multi-series line chart. The chart displays daily temperature readings across roughly three weeks, with each city represented by a distinct colored line and accompanied by a legend and labeled endpoints. The visualization uses D3 version 3.5.3, specifically leveraging `d3.tsv.parse` to read tab-separated data, `d3.time.scale` for the x-axis, and `d3.svg.line` for drawing the paths. Temperature data is parsed as dates and mapped to a linear y-axis, with city names colored via `d3.scale.category10`.