I used two hours of quiet data over the weekend to compute coherences of DARM with all channels with a bandwidth of 0.5 Hz, meaning about 7200 averages. The goal was to look for coherences in the high frequency (>100 Hz). Nothing there except residual jitter coherence (I'm using GDS-CALIB_STRAIN_CLEAN)
https://ldas-jobs.ligo-wa.caltech.edu/~gabriele.vajente/bruco_1395364856_GDS_CALIB/
Same time period, with a bandwidth of 0.1 Hz, and about 1800 averages
https://ldas-jobs.ligo-wa.caltech.edu/~gabriele.vajente/bruco_1395364856_GDS_CALIB_0.1Hz/