"Unique users" (a measure of audience levels) were up 1.7% for the week ending 27 June.
"The networks are finally putting a floor under their audience levels," he said.
Representatives of all three networks said audience levels this spring showed no loss from last spring.
The new broadcasting method brought up the need to create a new form to measure the audience levels.
But advertisers said the networks were inflating their audience levels through the new system.
On "Survivor" the audience levels have consistently risen at the half-hour mark every week.
"From now on, audience levels are going to be more program-driven."
The audience levels for news coverage of the events leading up to the war have been signficantly higher than usual in the last week.
The information provided is appropriate to the audience level, well-organized and easy to use.
NBC has seen its audience levels fall by about 15 percent.