This visualization displays daily average air temperatures in Belgium from 2017 to 2021 as a smooth line chart, using a bright magenta color scheme for high contrast against a dark background. It is built with the Vega-Lite API, which compiles specifications into Vega and renders via SVG, while D3.js loads the CSV data from a GitHub gist. The visualization configures custom axis styles and tooltips through vega-tooltip to show temperature readings on hover.