So, how are we doing with the latest cultural phenomenon called social distancing?

Of course, there’s no perfect measure of how well society is adhering to various “stay at home” mandates in the fight to halt the coronavirus. But here’s one hint: Southern Californians get poor grades for their efforts if a new scorecard from Norwegian data crunchers is correct.

A grading system created by Unacast rates U.S. states and Washington, D.C., according to cellphone movement data. The results can help people weigh performance by comparing “social distancing activity to its activity prior,” the website states.

While this detailed data collection and analysis might creep you out for its lack of privacy, how else would we get real-time information? The most recent grades, updated daily with a four-day lag, are through March 27.

How did Unacast do it? Their efforts are based on map-linked math that estimates how much (or how little) movement has slowed in a region. Obviously, that’s doesn’t track the full picture: Fewer moves to possibly dangerous locations don’t necessarily lower overall risk. Still, it’s intriguing math.

“This is a pro bono initiative,” Jeanne Meyer, a spokesperson for Unacast, told Recode. “They have 25 data scientists that took five years’ work and spent four days cooking this thing up to help with what’s happening.”

Unacast’s paying gigs include creating real estate software that looks at popular neighborhoods using the same cellphone-tracking data.

For social distancing math, Unacast offers three metrics: change in average mobility based on distance traveled; change in non-essential visits (the company does map-based marketing, so they know where you’re going); and a final grade that combines the two metrics.

Let’s start at the national level. Unacast says Americans overall have cut mobility by a stunning 40% to 55%, a C grade. Non-essential visits are down 60% to 65%, also a C grade. Together, those cutbacks earn an overall C grade.

California paralleled the nation with three C grades, the 11th highest among the states. Best? The national seat of government, Washington, D.C. Worst? Wyoming, a lightly populated state with few coronavirus cases.

In Southern California, Orange County got the best grades with a B-minus for lowering mobility and a C for cutting non-essential trips. The county’s overall grade was a B-minus. Los Angeles County got C grades across the three categories.

The Inland Empire fared poorly on Unacast’s scorecard. But considering the region’s huge logistics industry stocking the region with essential items, a rare booming business in the coronavirus era, these may be unfair gradings.

Are you a real estate fan? Then sign up for The Home Stretch newsletter and its Bubble Watch edition A twice-a-week review of what’s important for housing around the region! Subscribe here!

Riverside County got a D for lowered mobility, a C for cutting non-essential trips and overall C-minus.

San Bernardino County got an F for lowered mobility, a D for cutting non-essential trips and D-minus overall.