Just another quick comparison.  The Spectra attached shows the same story as previous: when the wind is low, the seismometer mounted with the BRS is noisier than the floor located ISI GND STS below 80mHz.  When the wind kicks up, the sensors compare better down to 20mHz especially the X DOF in line with the prevailing winds.  We may try a few more tricks to improve the low frequency response such as insulating other components.