CALIFORNIA — As the number of new coronavirus cases in the United States continues to grow, how well is California doing when it comes to social distancing and doing its part to flatten the curve?

A new interactive tool developed and launched Tuesday by Unacast, a New York City and Norway-based company that analyzes human mobility data, shows us exactly that. And when it comes to social distancing, California earned stellar marks when it comes to the art of staying home and increasing the physical distance between yourself and others.

According to Unacast's Social Distancing Scoreboard, California received an overall grade of A. The scoreboard also says we've seen a 48 percent decrease in distance traveled by people since the coronavirus outbreak was first confirmed in the U.S. Curious how other states and counties measured up? Check out the Social Distancing Scoreboard interactive map.

When the new coronavirus hit the U.S., Unacast saw an opportunity to provide a service to local and state officials, as well as the general public, according to Thomas Walle, CEO and co-founder of Unacast. "We sat down and asked ourselves, 'How can we help? What can we do?'" Walle said. "Something we're really good at as a company is understanding social behavior, and our goal was to create awareness around what social distancing policies and guidelines are working, and which ones are not."

To calculate a state or county's grade on the scoreboard, Unacast used real-time location data from tens of millions of mobile phones and calculated the average distance being traveled now compared with before the coronavirus outbreak. The organization then took that data and juxtaposed it against the number of confirmed cases in the state or county, as reported by the Corona Data Scraper.

Unacast used anonymous data that does not track the travels of any individual person, the company said.

States and counties receiving an A grade are seeing a decrease in movement of more than 40 percent, while those receiving a B are seeing a decrease of between 30 percent and 40 percent. Those that received a failing grade are seeing a decrease in movement of less than 10 percent. States topping the list according to scoreboard grade are: