{"version":"1.0","type":"rich","title":"Major U.S. Airports by Departure Delay","description":"This visualization combines a bubble map of major U.S. airports with a time histogram of departure delays. The map uses a conic conformal projection via `d3.geoAlbersUsa` and `d3.geoPath` to render state boundaries, overlaid with circles sized by the square root of total departure delay using `d3.scaleSqrt`. The histogram bins scheduled departure times into 20 bins using `d3.histogram`, summing delays per bin. Data comes from a flight delay analysis dataset loaded via `d3.csv`.","provider_name":"VizHub AI Studio","provider_url":"https://vizhub.com","html":"<iframe src=\"https://vizhub.com/viz/61c53416e2cf46d898858cd6555f0d11?mode=embed\" width=\"960\" height=\"500\" scrolling=\"no\" frameborder=\"0\"></iframe>","width":960,"height":500,"cache_age":3600}