This line chart visualizes one week of temperature data (in degrees Celsius) for San Francisco, sourced from the Data Canvas - Sense Your City dataset. It plots time on the x-axis against temperature on the y-axis, with a smoothed line using `curveBasis` from D3 v5. The SVG rendering uses `scaleTime` and `scaleLinear` for axes, along with `axisBottom` and `axisLeft` for tick marks. Grid lines and axis labels are styled via CSS, and the chart includes a title, “A Week in San Francisco.”