In 1984, Stewart Cheifet told a Senate committee that his station, KCSM, ran 341 minutes of ads during a limited #PBS advertising experiment authorized by Congress. In contrast, he said neighboring PBS station KQED spent 2,548 minutes during that same period running its pledge drive.

My question is: How many minutes did it take some College of San Mateo student to sit down and watch all that footage to calculate those figures for Stewart?