This visualization displays temperature readings from San Francisco over one week, plotted as circles on a time-based x-axis and linear temperature y-axis. Built with React and D3 v5, it uses `scaleTime` and `scaleLinear` to map the dataset, with SVG circles rendered through reusable axis and mark components. Time formatting via `timeFormat('%a')` labels the weekday ticks, while tooltips show the exact timestamp for each data point. The chart loads CSV data using `d3.csv`, with margins and labeled axes for clear temporal and temperature context.