{"version":"1.0","type":"rich","title":"Assignment 10: histogram graph White Hat","description":"This histogram visualizes the distribution of National Aviation System delays using a steelblue bar chart with 20 uniform bins. The chart includes four black annotations that explain design choices, such as the zero-based y-axis, equal bin widths, neutral color palette, and interactive tooltip functionality. Built with D3 v7 and d3-svg-annotation, it renders SVG bars with hover tooltips displaying exact range values and counts. The visualization uses CSV data loaded from a GitHub repository, featuring enlarged margins and clear axis labels to ensure readability.","provider_name":"VizHub AI Studio","provider_url":"https://vizhub.com","html":"<iframe src=\"https://vizhub.com/viz/4be9e06367c641648ac89308efa710eb?mode=embed\" width=\"960\" height=\"500\" scrolling=\"no\" frameborder=\"0\"></iframe>","width":960,"height":500,"cache_age":3600}