This line chart displays one week of temperature data from cities around the world, with each city represented by a distinct colored line. The chart uses a time-scaled x-axis and linear temperature scale, with legend and axis labels for readability. Built with D3 v5, the code employs `d3.line` with `curveBasis` for smooth paths, `d3.nest` for grouping by city, and `scaleOrdinal` with `schemeCategory10` for colors. Data originates from Data Canvas - Sense Your City, rendered as SVG in an HTML page.