This line chart visualizes January temperatures in the United States from 1895 to 2023, using data from NOAA’s Climate at a Glance dataset. It plots temperature in degrees Fahrenheit against time, revealing long-term trends and yearly fluctuations. The visualization is built with D3 v7, using `scaleTime` and `scaleLinear` for axes, `line` to generate the path, and `scaleLinear` for the y-axis, with data loaded via `csvParse`.