This line chart displays one week of temperature data in degrees Celsius for cities worldwide, sourced from Data Canvas - Sense Your City. Each city is represented by a colored line, with a legend showing city names and a title above the chart. The visualization uses d3.scaleTime, d3.scaleLinear, and d3.scaleOrdinal to map time, temperature, and city colors, while d3.line with curveBasis generates smooth paths. Nesting via d3.nest groups data by city, and the code includes custom axis labels and a reusable color legend component, all rendered as SVG.