This scatter plot visualizes the relationship between heart rate variability and body temperature in a sleep health metrics dataset. The visualization uses D3’s `scaleLinear` and `axisBottom`/`axisLeft` functions to map the quantitative fields to x and y positions, with circles rendered at each data point. The data comes from a custom `@Bashir1999/sleep_health_metrics` package, and the chart includes labeled axes and a light gray inner rectangle to frame the plotting area. The example demonstrates how the penguins scatter plot template can be repurposed for a different dataset.