This line chart displays temperature readings over the course of a week in San Francisco, with time on the x-axis and temperature on the y-axis. The data is loaded from a CSV file using `d3.csv` and parsed into `Date` and numeric values. The visualization is rendered as an SVG using React components, with scales constructed via `d3.scaleTime` and `d3.scaleLinear`. Tick marks and labels are generated manually, while the line path is drawn using D3’s `line()` generator.