{"version":"1.0","type":"rich","title":"Monthly PM2.5 Particulate in London Line Chart","description":"This line chart displays monthly average roadside PM2.5 particulate measurements in London from January 2010 to August 2018, with a red horizontal line marking the World Health Organization’s guideline limit. The data originates from the London DataStore. Built with d3.v5, the visualization uses d3.scaleTime, d3.scaleLinear, d3.axisLeft, d3.axisBottom, and d3.line with curveBasis to render an SVG path. The chart includes axis labels, tick marks, and a title, with the WHO limit annotated directly on the plot.","provider_name":"VizHub AI Studio","provider_url":"https://vizhub.com","html":"<iframe src=\"https://vizhub.com/viz/e3915fa5011747659ed24e2b7cf4cd35?mode=embed\" width=\"960\" height=\"500\" scrolling=\"no\" frameborder=\"0\"></iframe>","width":960,"height":500,"cache_age":3600}