This visualization displays a time series of temperature data, rendered as a line chart that switches between a refined line and a filled area representation. Built with React and D3 v5, it uses `d3.scaleLinear` and `d3.scaleTime` to map data to SVG coordinates, with `d3.area` for the area chart. Users can brush horizontally to zoom into the data, which triggers a level-of-detail reduction that switches between raw data points and aggregated min/max ranges, with circles drawn at high zoom levels.