This example displays a week of temperature data from San Francisco as a smooth, multi-line chart over time. The visualization uses D3.v5's `scaleTime`, `scaleLinear`, `axisBottom`, `axisLeft`, and `line` with `curveBasis` to render a single maroon path, while styling comes from CSS. Data is loaded from a CSV via `csv` and drawn as an SVG, with labeled axes and a title.