{"version":"1.0","type":"rich","title":"A7_Multi-line Chart","description":"This multi-line chart compares average monthly temperatures across four U.S. cities—NYC, LA, Chicago, and Houston—using data from a CSV file. It renders four colored lines (blue, red, green, orange) via `d3.line` and `d3.curveLinear`, with circular dots for each city. Built with d3.v7 and SVG, it includes a hover tooltip that displays the city and temperature in Fahrenheit. The y-axis domain is fixed from 10 to 90 degrees, and the chart uses `d3.scaleBand` for the x-axis (month names) and `d3.scaleLinear` for the y-axis.","provider_name":"VizHub AI Studio","provider_url":"https://vizhub.com","html":"<iframe src=\"https://vizhub.com/viz/923380fb2c0a4570a8a2f6dcf23856eb?mode=embed\" width=\"960\" height=\"500\" scrolling=\"no\" frameborder=\"0\"></iframe>","width":960,"height":500,"cache_age":3600}