This visualization displays one week of diesel fuel prices from multiple San Francisco gas stations, plotting price against time with a smooth curved line using D3 v7. The chart shows diesel price fluctuations across hourly data points from January 1–2, 2021. It loads CSV data via `d3.csv`, parses dates and numeric values, and renders an SVG line chart with `scaleTime` and `scaleLinear` axes. The implementation uses `d3.line` with `curveBasis`, `axisBottom`, `axisLeft`, and includes axis labels and a title in German, with gridlines from tick marks.