A little more than a month after the state of Minnesota received an “A” grade in social distancing, the state has now been given a “D”, according to Fox 9.

According to extrapolated cell phone data recorded by Unacast, Minnesota’s letter grade has gradually decreased since its initial “A” grade on March 26.

In March, Minnesotans had decreased their average distance traveled by about 45.66 percent on average.

As of May 5, data shows Minnesotans have now only decreased their travel by 25-40 percent statewide.

The top performing counties are all rural counties with “B” letter grades. They include Pipestone County, Redwood County and Cook County. Those counties all continue to decrease travel by 40-55 percent on average.

Washington, Anoka, Dakota, Stearns, Benton, Steele, Olmsted, Blue Earth, Sherburne, Wright, McLeod, Rice, Carver, Scott and Isanti Counties all received “F” grades with less than a 25 percent reduction in travel.

To collect the data, Unacast says it used tens of millions of anonymous cell phone records and their interactions with each other in order to ensure user privacy.