BruCo scan from a good range time from last night: https://ldas-jobs.ligo-wa.caltech.edu/~gabriele.vajente/bruco_1396823046_GDS_CALIB_CLEAN/

Some highlights:

• there is coherence with PRCL between 15 and 40 Hz, and also with REFL_LF (RIN). This is similar to what we oberved before, and we managed to fix this by tuning the PRCL offset
• there is some coherence with CHARD_Y and INP1_Y at low frequency. This could be improved by trying the new HAM1 FF, since for both CHARD_Y and INP1_Y we expect some improvement using the new FF filters (note that we are not doing any HAM1 FF to Y now).
• there is little coherence with DHARD_Y at low frequency, so maybe the AS WFS offset is still ok

The last two plots show what improvement in sensitivity we should be able to get by reducing the above noise couplings, and which of the above noises contribute most at each frequency. Those plots are produced by offline subtraction with NonSENS