This line chart visualizes one week of temperature measurements in San Francisco, using a smooth curved line to show how temperatures fluctuate over time. The chart includes labeled axes for time and temperature, with grid lines and a title. Built with D3 v5, the code uses `d3.scaleTime`, `d3.scaleLinear`, `d3.axisBottom`, `d3.axisLeft`, and `d3.line` with `curveBasis` to render the SVG path. Data is loaded from a CSV file via `d3.csv` and parsed with JavaScript `Date` objects.