This example visualizes daily temperature records in San Francisco as a smooth line chart, using a time-scaled x-axis for dates and a linear y-axis for temperature values. Drawn with SVG paths, the line employs D3's `line()` and `curveBasis` for smoothing, while axes are generated with `scaleTime`, `scaleLinear`, `axisBottom`, and `axisLeft`. The CSV data is loaded asynchronously, with margins, labels, and title configured programmatically.