real memory status

What is the 'Real/Physical' memory status?  It always shows above 95% even though my system memory hovers around 30%.  I've read that it's based on the results of the 'free' command, but when I manually run that command I only get 'Actual' and 'Swap' values.  This 'Real' status doesn't seam 'real' at all.  I'm routinely forced to manually ignore that specific value's tolerances via the 'analysis.cfg' file, but that seems counter productive if the 'Real' status actually means something important.  Can anyone advise?