The ETMY BRS enclosure has a T240 mounted on the BRS table, in hopes that the tilt subtraction will be improved by co-locating the seismometer and the tilt sensor. Krishna has a couple of alogs looking at the differences in the subtraction, but both of the measurements he posted were for relatively low winds (his max was ~22mph). We were waiting for more wind before deciding to make the switch, then kind of forgot about it. But looking shortly after Krishna's alog, there was a pretty windy time Nov 16th 2017, after Hugh got good insulation on the seismometer and we were happy with the mounting of the STS. The first attached plot shows the difference in subtraction between the PEM sensor (the T240 on the BRS table) and the ground STS. This plot is pretty similar to Krishna's (should be, it came from his script, just with new data), I think it shows that subtraction is still improved with winds into the 30's. The second plot is new, it shows the product & RMS of each of the two ground supersensor signals with sensor correction filter (i.e. (PEMT240-BRS)*SC_filter & (GNDSTS - BRS)*SC_filter). This should be the dominant control signal for the ISI at low frequency and between .01 -.1 hz the rms is reduced up to 30%. It's possible this could be improved some with gain tweaks.