Well, it could be worse.

As HBO’s “Westworld” sucks up the attention of online commentators this fall, network TV has been slogging along. With the 2016-17 television season approaching its midway point, there are some clear winners (NBC’s “This Is Us”), some bombs (ABC’s “Notorious”) and many, many shows somewhere in between.

Ratings are, once again, down across the board, dropping 8 percent among adults and 4 percent in total audience, according to the television research firm Nielsen, but each network can at least make a plausible claim that it has a new show with a strong pulse. As Preston Beckman, a former executive at NBC and Fox, said in an interview, “It hasn’t been a home run season for the networks. But it also hasn’t been a disaster. So, mission accomplished.”

Here are some highlights from the fall season for the four biggest networks.

NBC Is on Top

This one is clear: NBC leads in the 18- to 49-year-old demographic important to advertisers. Buoyed by still strong, if flagging, ratings of National Football League games, as well as “This Is Us,” “The Voice” and four Dick Wolf dramas, NBC is down 7 percent in the demographic year over year, compared with double-digit losses at CBS and ABC.