{"version":"1.0","type":"rich","title":"Muni Average Daily Boardings B&W Scatterplot","description":"A black-and-white scatterplot shows Muni’s average daily boardings from 2019 to 2020, revealing a drastic drop in ridership beginning in early 2020 due to COVID-19. Each circle encodes a date on a d3.scaleTime x-axis and boardings on a d3.scaleLinear y-axis, with tooltips showing the raw boarding value. The visualization is built with D3 v6, renders as SVG circles, and loads data from a CSV URL via d3.csv. Axes are generated using d3.axisLeft and d3.axisBottom.","provider_name":"VizHub AI Studio","provider_url":"https://vizhub.com","html":"<iframe src=\"https://vizhub.com/viz/b46e12365a094d82aa81c02ac9f8e5c0?mode=embed\" width=\"960\" height=\"500\" scrolling=\"no\" frameborder=\"0\"></iframe>","width":960,"height":500,"cache_age":3600}