This example visualizes a week of hourly temperature readings in San Francisco using a smooth area chart rendered as an SVG. The chart displays temperature variation over time, with a red filled area and a darker red line, along with labeled axes for time and temperature. The code uses D3 v6 APIs including `scaleTime`, `scaleLinear`, `area`, `curveBasis`, and `axisBottom`/`axisLeft` to map the CSV data. The `csv` method loads the data, and timestamps are parsed into `Date` objects before rendering.