This example embeds three miniature line charts directly into the flowing text of a paragraph, each sparkline visualizing a different measure (amount1, amount2, amount3) from the same CSV data across the years 2010–2015. The first sparkline shows raw counts, the second decimal values, and the third percentages, each with its own number format. The code uses D3 v4 APIs such as `d3.line`, `d3.scalePoint`, `d3.scaleLinear`, and `d3.pairs` to compute changes between consecutive points, rendering the SVG sparklines inline within HTML spans using the `d3.select` and `.call` pattern.