This visualization displays a week of temperature readings from multiple cities, using a multi-line chart to compare trends over time. Each city is represented by a colored path, with a categorical color scale and a legend identifying each location. The chart is built with React and D3 v5, using `d3.scaleTime`, `d3.scaleLinear`, and `d3.line` with `curveBasis` for smooth paths. Data is loaded via `d3.csv` from a remote dataset, and the rendering uses SVG with nested groups for axes and a custom color legend function.