So, ETMx was aligned ~31 Oct, alog 8356.  Location monitor channels were not available until ~23 Nov.  Attached is a trend graph showing the HEPI IPS signals from the alignment time until the location monitor channels became available.  See alog 8504 why the shifts seen are not signifcant.

Second plot attached shows trends of the Location monitor channels to the present.  On Dec 5 the HEPI was locked, pump down of the chamber began ~11 Dec and the HEPI was unlocked on the 12th.  The lock period is in the middle of the graphs.  The lock/unlock times are apparent although pumpdown trends are hidden in the unlock.  The shifts in Rx & Ry since the alignment are the most worth noting with 40 to 60urads observed.  But don't worry, the input matrix values for these channels are 2x too large so the actual motion is 1/2 this.  We'll get those matrix values correct soon!  Further, the Rz matrix values is 4x too large so the 30urads recorded is really about 8urads.

So, with these two plots we can track the HEPI position back to alignment.  Sorry for not adding the value of telling you where we are now.  Not sure how useful that really is since pump down has distorted the floor therefore the piers corrupting the numbers.  When we correct the matrix values, I'll have to go through this again as well.