This line chart visualizes a week of temperature data in San Francisco, plotting temperature values against time. The visualization uses D3 v5 APIs including `scaleTime`, `scaleLinear`, `axisLeft`, `axisBottom`, and `line` with `curveBasis` to render a smooth SVG path. The data is sourced from Data Canvas - Sense Your City, though the code substitutes hash rate values from a local dataset instead of the temperature CSV. The chart includes labeled axes, grid lines, and a title, with styling applied via CSS classes.