A dark-themed area chart displays 150 days of temperature data for Denton, Texas, using a Date x-axis and Temperature (°F) y-axis. The visualization uses a linear gradient fill beneath a blue monotone curve to show temperature trends over time. Built with D3 v7, the code loads a CSV via `d3.csv()` with `d3.autoType`, parses dates with `d3.utcParse`, and projects scales using `d3.scaleUtc()` and `d3.scaleLinear()`. The area and line shapes are generated with `d3.area()` and `d3.line()`, both using `d3.curveMonotoneX`, and rendered as SVG with a responsive `viewBox`.