Adding Adsense code below Title in Single Posts

Hi,
I'm trying to add Adsense code below the Title on single post pages only.

In ATO> Style & Edit Center Column, "The Loop", I tried to add the code between the post_byline and post_bodycopy php statements. This does add the ad below the Title, but also adds it to the Front page of our site under each of the excerpt titles. The front page is set up to show one single post and post excerpts after that.

How might I accomplish this?

Thanks!

Michael