This line chart displays temperature over time for San Francisco, using a smooth area curve to emphasize the trend. The x-axis maps timestamps via `scaleTime`, while the y-axis uses `scaleLinear` for temperature values. Rendered as SVG with D3 v5, the chart includes gridlines from `axisBottom` and `axisLeft`, and the area path is generated with the `area` function and `d3.curveBasis`. Data is loaded from a CSV file using `csv`.