This visualization shows daily temperature variations in San Francisco with a smooth area chart over time. The chart uses a time-scaled x-axis for timestamps and a linear y-axis for temperature readings, filled with a maroon area beneath the curve. Built with React and rendered as SVG, the code leverages D3 v5 utilities including `scaleTime`, `scaleLinear`, `area` with `curveBasis`, and `axisBottom`/`axisLeft` for labeled axes. Data is loaded from a remote CSV file containing timestamp and temperature values.