This line chart from the Data Canvas Sense Your City dataset displays one week of temperature readings across multiple global cities, with each city represented by a smooth curve. The visualization groups data by city via `d3.nest()` and renders paths using the `d3.line()` generator with `curveBasis`, colored by `scaleOrdinal(schemeCategory10)`. A reusable colorLegend module appends circles and text labels. Axes use `axisBottom` and `axisLeft` with grid lines, while D3 v5 handles time and linear scales for timestamp and temperature values. The SVG output includes a title and rotated axis labels.