TimeDemand Flow (gpm)Running Hourly Average (gpm) 7:00 AM2,000 7:15 AM2,400 7:30 AM3,000 7:45 AM5,0003,100 8:00 AM4,0003,600 8:15 AM3,5003,875 8:30 AM4,0004,125 8:45 AM3,5003,750 9:00 AM2,7003,425 Think of it like a running hourly average of demand flow measurements.