Finding and individual channel

Was just 'gifted' an adsense account

[Western]

A friend of mine is taking some time off to travel.

He has about a dozen sites most of which use Adsense. He's given me a login to manage his Adsense account. He generates little revenue through his account and I don't think he's ever tried.

Here's my problem:

He has one channel that outperforms all others by a good deal, both CTR and eCPM. He's named this channel a single letter - x.

I don't even know what site this is on.

Is there any way for me to find this with the Adsense interface? If not is there another way to find the info? I've already tried ctrl-f on all of the domains on his local machine (with the adsense code preceding the 'x'.

No luck.

[icedowl]

You can create a URL channel for each site and see what might match up in the reports. URL channels don't require that any code be placed on the site's pages and might give you a better idea of what is happening.