via press release:
Fast-Official Late-Night Results for Tuesday, Sept. 8, 2015
Show…18-49 rating…p2+ viewers
Jimmy Fallon…0.88…2.920 million
S. Colbert (P)…1.39…6.549 million
Jimmy Kimmel…0.35…1.745 million
Seth Meyers…0.41…1.302 million
James Corden…0.48…1.850 million
Airing opposite the Colbert premiere, Tonight Show Starring Jimmy Fallon drew a 0.88 A18-49 and 2.920 million total viewers 2+.
Virtually matching the show’s A18-49 summer-to-date average (0.89 A18-49).
Late Night with Seth Meyers drew a 0.41 A18-49 and 1.302 total viewers 2+.
Despite facing 10 minutes of Colbert and higher-rated Corden competition, Meyers was close to his summer-to-date averages of 0.43 / 1.417 million.
Despite the later hour, Meyers topped Kimmel in the A18-49 demographic (0.41 vs. 0.35).