Got a long enough patch of wind over the weekend, long enough around 20mph and from the south or SW direction, see first attachment.  The previous post about this had the wind from the NNW.  Go to this alog to walk back through all the positions.

Looking at the second attachment, the Z DOF here looks pretty different than first look at Roam8, otherwise the X & Y DOFs look similar: during the quiet period (1000hrs 10 Aug) the floor or the HAM5 STS2 is noisier than the ITMY unit or that location at frequencies below 20 to 40mHz.  During the high wind, 1640hrs 13 Aug, the Roam8 measurement is noisier by a factor of a few below 20 to 70mHz.  At the lowest frequencies, below 10 or less, one might argue the HAM5 machine got less noisier during the windy time but these calibrated machines are giving an actual motion, not relative, again arguing that the HAM5 machine is not a good as ITMY.

Bottom line--for Roam8: not as good as ITMY.