This line chart shows a week of temperature readings in San Francisco, plotted over time with smooth curves. The visualization uses D3 v5 with SVG rendering, employing `d3.scaleTime` and `d3.scaleLinear` for axes, `d3.line` with `curveBasis` for the smoothed path, and `d3.axisBottom`/`d3.axisLeft` with gridlines. Data is loaded as CSV from a remote dataset, with timestamps parsed and temperatures converted to numbers before rendering. The chart includes labeled axes and a title, styled via external CSS.