This interactive area chart displays two metrics from a week of temperature data in San Francisco: average duration in milliseconds (Durchschn) and count (Anz) across time. The visualization uses two linked line charts with a brushable mini-map for zooming, rendered as SVG via D3 v4 APIs including `d3.time.scale`, `d3.svg.brush`, and `d3.svg.line`. The data is loaded from a local CSV file and parsed with `d3.csv`, with time formatted using `d3.time.format`.