Thanks @Soapsuds

Those Feb 2 ratings were an anomaly as CBS showed a 3 hr Shakeseare production.

Viewers switched in droves to the opposition with the ABC sitcoms hitting best numbers of the season and even a dud like Circle of Fear doing well.

NBC were reluctant to break up the Sanford/Chico duo but had they moved Chico to 9 they could have introduced new sitcoms at 8.30 and 9.30 which would have benefited the overall schedule as NBC had no other sitcoms and that was pretty much what gave CBS and then ABC the winning edge.

...

This was peak 'network wars' with super hyped programming battling it out.

ABC -TV emerged on top with a 21.9 rating average, NBC climbed out of third for the first time since last November with an 18.9 and CBS -TV came in close behind with an 18.3.

MON

CBS programmed All in the Family/Alice #19 8-9. MASH #9

ABC Salvage had a 28 share How The West was Won 26 share.

NBC Little House #12 Backstairs at White House #7

TUES

ABC Happy Days #4 Laverne #3 Three's Company #2 Taxi #8

WED

The much hyped Supertrain on NBC had a 2 hr debut and managed a 32 share #17 up against 2hr Charlies Angels 35 share #11.

Quincy had a special episode @10 #20.

CBS was way off Spiderman 23 share One Day at A Time 24 share, Jeffersons 25share/Kaz 19 share.

THURS

Angie #5 premiered following Mork & Mindy #1 so was guaranteed a successful debut. It was Mork's highest rated episode to date. Barney Miller #13

NBC up against Mork/Angie had Little Women premiere 18 share and 2hr Women in White 25 share

CBS Waltons 27 share

FRI

CBS Dukes of Hazzard 33share/Dallas 38 share #18

ABC After airing the previous Friday behind a Happy Days special episode, new sitcom Makin It aired @8 to a dismal 20 share up against Diff'rent Strokes and Incredible Hulk.

NBC were trying a sitcom block-Strokes 36 share #15 /Brothers & Sisters 26 share/ Turnabout 24 share/Hello Larry 22 share and Sweepstakes 21 share.

SAT

NBC BJ & The Bear 90 min premiere 36 share/Rockford Files 90 min ep 27 share

CBS White Shadow @8 25 share

ABC Love Boat #16

SUN

ABC Osmonds @7 24 share Elvis 8-11 #6 27.3/39

CBS GWTW Pt 1 7-10 #10 24.3/36 60 Minutes @19 27 share

NBC Cuckoos Nest #14 22.5/32 Weekend @10 19 share

That was only the 2nd time GWTW had been shown on TV. The first showing was in 1976 on NBC.

CBS Previews New Fall Season (1974-1975) "See the Best: CBS"

CBS Fall Shows (1978/1979) Promo Reel