{"version":"1.0","type":"rich","title":"Untitled","description":"This visualization shows London’s monthly air quality data from 2010–2018, displaying PM2.5 and PM10 particulate levels as a multi-line chart. A dropdown menu lets users select different pollutant measures, while a color legend indicates measurement year. The visualization uses D3.js v3 to render SVG graphics, with animate transitions on the line paths. Data originates from the Kings College London Air Quality Dataset, and the code relies on D3’s `scaleTime`, `scaleLinear`, `nest`, and `line` functions for time-series rendering. Axis helpers like `axisBottom` and `axisLeft` structure the plot.","provider_name":"VizHub AI Studio","provider_url":"https://vizhub.com","html":"<iframe src=\"https://vizhub.com/viz/1f37c3f38d3e47d7b1791178e8d67556?mode=embed\" width=\"960\" height=\"500\" scrolling=\"no\" frameborder=\"0\"></iframe>","width":960,"height":500,"cache_age":3600}