[Elecraft] Serial data access to Compression Bar Graph Meter?

[Rob]

Hello group,
Is there a way to access the Compression bar graph display data using 
RS-232 serial commands? I know to read the RF Power and ALC bar graph 
meters using the BG command but is it possible to query the meter level  
while transmitting? And on a related note, is there a way to determine 
which meter pair is currently being displayed  as set by the DISP/METER 
switch?
Thanks,
--rob-- K6DQ