{"version":"1.0","type":"rich","title":"Gas report","description":"This visualization presents a layered line chart comparing gas consumption amounts and fuel efficiency (mpg) over time. The data is loaded from a GitHub-hosted CSV file using `d3.csv`. The chart uses two overlaid line marks with independent y-axes, created via the Vega-Lite API’s `vl.layer` and `resolve` functions. Both layers encode date on the x-axis and tooltips on the data fields. The visualization is rendered with Vega-Lite, using a custom config for axis styling and colors.","provider_name":"VizHub AI Studio","provider_url":"https://vizhub.com","html":"<iframe src=\"https://vizhub.com/viz/b7fa41bd9e35415bbb413c957be183cf?mode=embed\" width=\"960\" height=\"500\" scrolling=\"no\" frameborder=\"0\"></iframe>","width":960,"height":500,"cache_age":3600}