A histogram visualizes the distribution of frequency data against interval boundaries (組界) from a lab dataset. The chart uses a bar chart layout with a D3.js v5 `scaleBand` for the categorical x-axis and a linear scale for the y-axis, displaying counts via SVG rectangles. The code leverages React components (AxisBottom, AxisLeft, Marks) and D3 utilities like `csv`, `scaleLinear`, and `histogram()` (from D3's histogram extension) to bin and render the data. The static visualization is styled with custom fonts and colors, with the dataset fetched from a Gist, presented in a React-based rendering pipeline.