This radial chart visualizes two circular barplot series around a shared axis, comparing country-level statistics with values that can extend above or below the baseline. The outer bars use a radial scale with an inner radius of 90 and an outer radius reaching half the SVG dimension, while an inner set of bars uses a reversed scale that shrinks toward the center. Data comes from `data.csv` and is drawn as SVG arcs using `d3.arc` with a band scale for angular positioning and custom label rotation. The code relies on the `d3-scale-radial.js` helper library alongside d3.v4.