{"version":"1.0","type":"rich","title":"Massachusetts Daily COVID-19 Vaccinations - Interactive Barchart","description":"This interactive bar chart displays daily COVID-19 vaccination doses administered in Massachusetts from April 1 to September 4, 2021. Each bar represents a single day’s total, with tooltips revealing the exact date and dose count on hover, while the other bars dim for emphasis. Built with D3 v5, the visualization uses `scaleTime` and `scaleLinear` for axes, `axisLeft` and `axisBottom` for labels, and SVG rectangles with mouse event handlers. Data comes from a CSV of US state vaccination statistics, filtered to Massachusetts.","provider_name":"VizHub AI Studio","provider_url":"https://vizhub.com","html":"<iframe src=\"https://vizhub.com/viz/328e79d7a2f64505ad1833ed953c208c?mode=embed\" width=\"960\" height=\"500\" scrolling=\"no\" frameborder=\"0\"></iframe>","width":960,"height":500,"cache_age":3600}