This scatter plot visualizes temperature readings over a week in San Francisco, with time on the x-axis and temperature on the y-axis. It uses React to render SVG elements and D3 v5’s `scaleTime`, `scaleLinear`, `extent`, and `timeFormat` to map data to coordinates and format weekday labels. The dataset is loaded via D3’s `csv` from a GitHub gist, and hovering over a circle reveals its timestamp through an SVG `<title>` tooltip.