Jennifer Lynch, one of the EFF attorneys that filed the lawsuit, told Ars that this particular week was selected for a number of reasons.
“I wanted to get the data for one week because I wanted to limit it so we could do something with it and weren't overwhelmed,” she said. “With a week's worth of data you can see where the cops are focusing their efforts. You would be able to see whether the same plate is scanned multiple times during the same week. [The LASD and LAPD] probably have the largest volume of this type of data and they're representative of large scale cities around the country.”