This chart displays a wealth of information from the week of February 26 to March 2 when the Shanghai market dropped sharply, causing a ripple effect throughout the world's stock markets. Although the feverlines and map simply show percent change, it provides a powerful summary for the day's events. The visual representation provides another layer of interpretation that allows readers to more effectively grasp the full effect of the market's plunge, more so than just reading a data table.

The volatility chart was WSJ.com's most popular interactive feature for the entire month of March, with significantly more page views than any other project. It received so much traffic the first day, we continued to track the data for the remaining days of the week. The success of this graphic reinforces the value that visual displays can bring to content.