Here's a BruCo repot for GDS-CALIB_STRAIN_NOLINES from last night lock: https://ldas-jobs.ligo-wa.caltech.edu/~gabriele.vajente/bruco_1382152121_STRAIN/ 

Some highlights:

• CHARD_Y is likely the leading limiting factor between 10 and 20 Hz, while DHARD_Y is the main contributor to residual noise below 8 Hz (to be confirmed with another BruCo scan on LSC-DARM_IN1
  • maybe it's time to retune / recheck the A2L gains
• SRCL is also contributing to a good fraction of the noise between 10 and 20 Hz.
  • maybe we can try an iterative retuning of the SRCL FF
• MICH is also not too far between 10 and 50 Hz:
  • time to do an iterative retuning of MICH FF
• PRCL shows (surprisingly?) some coherence between 24 and 50 Hz: PRCL could explain the peaks and structures between 24 and 40 Hz
  • maybe coupling throuhg MICH? Or is it time to put back in operation a PRCL FF?

Large frequency bands are completely devoid of coherence.