What do these BBM Group icons mean?

Ok, so after searching like crazy, I am still unable to find out what these icons mean (see red arrows). I know that the key icon means that the member has been given admin privs, but not sure about the others. I can take an educated guess and say that the clock means they are unavailable, and that the little "reception thingy" means that they have no reception?

Any help would be great.

http://i46.photobucket.com/albums/f1..._17_51copy.jpg

looks like a standard "busy" clock that you seen in BBM all the time. they maybe on the phone or something. the cell antenna and the x means they are out of covereage area or phone is off. people i know who left their blackberrys for other phones and never deleted themselves off the group list have this icon by their name.

The red arrows mean that this contacts phone is off :)