From the Valentine era:
https://www.bostonglobe.com/sports/2012/07/13/media/knL69JSi7YsgPLHb6ya56L/story.html
The Red Sox’ first-half performance may have been disappointing to their fans, but that hasn’t discouraged them from reliably tuning in.
NESN’s game telecasts are averaging a 7.5 household rating this season, according to information provided by the network and confirmed via Nielsen Media Research. The telecasts are averaging a viewership of 224,000 P2+ (people 2 years and older) per night.
The steady ratings are encouraging for the regional sports network, and somewhat surprising given the ball club’s mediocre first-half (43-43 record) and some residual frustration among the fan base from last September’s colossal collapse.