The peaks at 206Hz and 234Hz are gone. I guess the PBS did something good. The other two lines are still persistent. One at 177.7Hz got worse after I closed and reopened the beam diverter after a long lock (orange trace for ASQZ, cyan for SQZ). Compare to purple trace that I took right when I got in the control room. The line at 262Hz got worse after the beam diverter closed/opened but got better after sometime passed (dark purple). Maybe this suggests something mechanical? The next thing to do is to check the coherence with accelerometers.

Note that I kept the phase the same as last sqz measurement and I didn't optimized the nlg before I took this measurement (temperature setting was the same as last time).