> Update: 1:09pm: Another e-mailer adds: "The corollary to the apt observation that Katrina helped NBC in '05, is that the only way CBS will be able to validly claim credit is if Couric succeeds in a high-pressure, heavily watched news story like Katrina. The jury is very much out on that."

> Update: 12:35pm: "The year over year numbers put out by CBS forgets one little thing.. It was Katrina continuing coverage, where NBC did brilliantly and CBS had fallen off a cliff," an e-mailer says...

This morning's ratings press release from CBS touts the CBS Evening News' ratings gains compared to the year-ago. Here are the raw numbers from the network:

	Total viewers
	Week of Sept. 18	Same week in '05	Change
NBC	8,182,000	9,585,000	-15%
CBS	7,694,000	7,081,000	+9%
ABC	7,556,000	8,795,000	-14%

	Households
	Week of Sept. 18	Same week in '05	Change
NBC	5.7/12	6.8/14	-16%
CBS	5.5/11	4.9/10	+12%
ABC	5.3/11	6.1/12	-13%

	25-54 demo
	Week of Sept. 18	Same week in '05	Change
NBC	2.1/9	2.8/11	-25%
CBS	2.1/9	1.8/7	+17%
ABC	2.1/9	2.6/10	-19%