Evan, Sheila, Cheryl

We switched blend filters from 90 to 45 mHz in the last several minutes.  There were large glitches in green arm transmissions when I switched ETMX X direction and ETMY Y direction.  It seems like  ETMY direction switched something got misalinged (the Y arm green transmission dropped). Cheryl adjusted transmon Y to recover the build up.

If anyone from seismic is interested in figuring out why switching blends causes glitches, I started switching around 18:50 UTC and finished by 19:01 UTC on October 25.  

The microseims BLRMS is around  0.5 um/sec and the wind had been gusting up nearly up to 20mph over the last hour but is dying down now.  ALthough the arms got misalinged, the build ups are much more stable with 45 mHz blends in these conditions.