This example visualizes daily activity counts for seven individuals across a two-week period using a small multiples layout. The chart shows individual time-series lines for each person, highlighting variation in activity levels. The visualization is built with React and D3 v6, rendering SVG elements through a custom `VizContainer` component that follows the margin convention. The code imports data locally and uses React’s component structure to manage the display, leveraging D3’s scalability and React’s declarative rendering.