This line chart visualizes one week of temperature data in San Francisco, sourced from Data Canvas - Sense Your City, with time on the x-axis and degrees Celsius on the y-axis. The SVG rendering uses D3 v5 APIs including `scaleTime`, `scaleLinear`, `axisBottom`, `axisLeft`, and `line` with `curveBasis` to draw a smooth maroon path. Grid lines are generated via tick sizes, and axis labels and a title are added as SVG text. The code loads CSV data asynchronously and converts timestamps to `Date` objects before rendering.