This example displays a summary of a parsed dataset of historical United States post office locations, showing the data’s size in kilobytes, the number of rows, and the number of columns. Using the D3.js library (version 5), the code loads a CSV file from a GitHub raw URL via `d3.csv`, then computes the formatted size with `d3.csvFormat`. The results are rendered as plain text inside a `<pre>` element, with the font size enlarged via CSS.