We were concerned about the stability of the DHARD loops (seems like it wasn't them limiting our lock length after all), so I measured DHARD Pit since we were seeing pitch angular drift. 

Here is the measurement.  So far, we haven't modified the loop, but we do note that it is much lower bandwidth than it used to be.  This is okay as long as we have less motion to control, but we may find that we need to increase the bandwidth.

I upload a screenshot of the measurement in red, with 2 references from O2.  The .xml file is in our loop measurement svn place: /ligo/svncommon/IscSVN/iscmodeling/trunk/ALIGOH1/ASC_loops/Measurements/DHARD, and has been checked in.