{"version":"1.0","type":"rich","title":"Multiple Line plot with Dropdown","description":"This visualization shows monthly air quality measurements in London from 2010 to 2018, displaying pollutant levels as a multiple line plot. A dropdown menu lets users select which pollutant to display, from options like PM2.5, PM10, and nitrogen dioxide. Each year is represented by a colored line, with a color legend identifying the annual series. The visualization uses D3 v5 with SVG rendering and animated transitions, loading data from the London Datastore via the `csv` method, and employing `d3.nest` for data grouping.","provider_name":"VizHub AI Studio","provider_url":"https://vizhub.com","html":"<iframe src=\"https://vizhub.com/viz/0430e766be4f49c19e3b1c71d70b9f6f?mode=embed\" width=\"960\" height=\"500\" scrolling=\"no\" frameborder=\"0\"></iframe>","width":960,"height":500,"cache_age":3600}