This scatter plot shows San Francisco temperature readings over a week, with time on the x-axis and temperature on the y-axis. Each circle represents a single hourly measurement, with a native SVG `<title>` element providing a tooltip on hover. The visualization uses React to render SVG elements, with D3's `scaleTime`, `scaleLinear`, and `extent` functions handling the scales and domains. Data is loaded asynchronously from a CSV file via the `d3.csv` method, and custom React components for the axes and marks keep the code modular.