Here are two plots which show the same thing:  the excess low frequency noise noted yesterday 76924 has gotten better but we are still worse at low frequency than we were April 2nd.

The first plot is just a DARM comparison (without cleaning, CAL DELTA L), the second is a plot of the low frequency blrms (  BLRMS 2 is brown is 20-29 Hz, BLRMS 3 is pink is 38-60 Hz).

The third plot shows the same blrms against a ground motion blrms, ground motion doesn't seem to be an explanation.