This line chart shows a week of temperature readings in San Francisco, with time on the x-axis and temperature on the y-axis. The chart uses D3 v5’s `scaleTime` and `scaleLinear` for axes, `line` with `curveBasis` for the path, and `axisBottom` and `axisLeft` for labeled ticks. It reads CSV data via `d3.csv`, renders as SVG, and includes a rotating y-axis label and a titled header.