This fork of a line chart displays a week of temperature data from cities around the world, sourced from Data Canvas - Sense Your City. The visualization uses D3 v5 to render multiple lines in SVG, with each line representing a city. The code constructs time and linear scales for the axes, and applies a curve basis smoothing to the line paths. It also includes a custom color legend component and sorts the city lines in descending order based on their final temperature value.