President Barack Obama capped off a week of television appearances with a prime time press conference on Tuesday March 24, 2009. The event was carried live from 8:00 to approximately 9:00PM on 11 networks. The sum of average audience for those networks was 40,354,000 and had a combined household rating of 25.9. The networks carrying the press conference were ABC, CBS, FOX, NBC, Telemundo, Univision, CNBC, CNN, FOX News Channel, MSNBC, mun2.[...]
The President’s first prime time press conference was watched by 49.5 million people on eight networks on February 9, 2009.
via Nielsen Wire.

Three networks more and 9 million viewers less.
What in mun2, some low-power station?
The POTUS is still making TV appearances – a vary brief “cameo” ending South Park last night