{"version":"1.0","type":"rich","title":"London Air","description":"This visualization displays monthly air quality measurements from the Kings College London dataset, plotting pollutant concentrations over time with circles colored by year and outlined by measurement type. The chart includes interactive legends that filter data by color or stroke value, a dropdown menu to select pollutant columns, and hover tooltips showing readings. Built with D3 v5, it uses scales for color and time axes, transitions for animated updates, and separate legend components for year and measurement type.","provider_name":"VizHub AI Studio","provider_url":"https://vizhub.com","html":"<iframe src=\"https://vizhub.com/viz/d10d82f7d23c443ebdacfa502db27b7c?mode=embed\" width=\"960\" height=\"500\" scrolling=\"no\" frameborder=\"0\"></iframe>","width":960,"height":500,"cache_age":3600}