The Boston Celtics' sweep of the Indiana Pacers averaged a 3.4 rating with 6.31 million viewers.

That number is down 15% in viewership from last year's Celtics-Heat series.

Game 4 finished with a 3.5 rating and a series-high 6.63 million viewers. 

The Celtics-Pacers series ranked as the fourth most-watched Eastern Conference Finals of the last nine years.