This visualization compares two datasets, y1 and y2, sharing the same x-axis from a tab-separated TSV file. It renders both series as SVG circles and paths using distinct color schemes: y1 appears in green and black, while y2 uses red and blue. The chart applies two curve interpolation methods, `d3.curveStep` for y1 and `d3.curveNatural` for y2, to show different line shapes. Axes are generated with `d3.axisTop`, `d3.axisLeft`, and `d3.axisRight` using linear scales created via `d3.scaleLinear` with `d3.extent` and `.nice()` for domain calculation.