You will see 9 columns corresponding to different categories that each specify properties of the different machines available in the Mastodon compute cluster at the University of Texas.
I was wondering especially about the last 4 columns (Condor Load, Other Load, % Load, and yes, Memory). What do these numbers mean? They vary too much (from less than 1, and others to greater than > 100) to be able to abstract meaning from for someone who hasn't had any experience with compute clusters. And the Memory column I'm not sure how to assume what the units are supposed to be in (and whether this means currently free memory, or potential memory capacity of the system).