Keita made a template to passively measure the Quality of A2L for H1 & he said it would be good to look at this over a long period (alog#32106).  We are currently on a 25+ Hour Lock.  During this lock:

• 1st A2L was run 1-2hrs after lock.
• 2nd A2L was run 24hrs later

Before running the 2nd A2L I ran Keita's template for once an hour during the lock.  I saw that many hours (~16hrs) after the 1st A2L that the DARM & ASC Coherence for PITCH began to increase again, and then I ran the second A2L.  (I mainly focused on PITCH because it was the DOF which showed the most change.)

After both A2Ls, didn't really notice an improvement in range.  Did notice a better looking DARM spectra (on nuc3).  

Question:  If the DARM & ASC Coherence increases like this, do we want to run the A2L?  Is this the right thing to do?  Or do we just let the Coherence increase?

Attached is a look at the PITCH coherence for every hour during this lock (with A2L moments marked).