This line chart visualizes daily surface air temperature data, colored by year, with the year 2024 highlighted in red. Each line represents a year’s temperature variation over the day of the year, using a plasma color scale for other years. The visualization relies on `d3.scaleLinear`, `d3.extent`, and `d3.flatGroup` from the D3 library to group data and map values. Axes and labels are generated via `@curran/responsive-axes`, while the chart updates responsively using `observeResize`.