{"version":"1.0","type":"rich","title":"Activity7_q2","description":"This area chart shows the average fuel efficiency (MPG) of cars over model years, separated into three regions: the USA, Europe, and Asia. Each region is represented by a semi-transparent filled area with a smooth curve, using a color scale and a legend to distinguish them. The visualization aggregates data from a CSV file using d3.groups and d3.mean, then renders the areas with d3.area, d3.curveCatmullRom, and d3.axisBottom/axisLeft for the axes.","provider_name":"VizHub AI Studio","provider_url":"https://vizhub.com","html":"<iframe src=\"https://vizhub.com/viz/877ae2a2fdee4763a963cc248395c462?mode=embed\" width=\"960\" height=\"500\" scrolling=\"no\" frameborder=\"0\"></iframe>","width":960,"height":500,"cache_age":3600}