I am trying to stitch together spectra from seismometers and accelerometers to produce a ground motion spectrum from Hz to 100's of Hz. I was able to retrieve data from two seismometers, GUR1 and STS_1, but not from any of the accelerometers. The GUR1 spectrum is qualitatively similar to other plots that I have seen, but the STS_1 spectrum looks strange: the X axis spectrum is falling off as ~1/f, but the Y and Z spectra are pretty flat. All three axes have a few lines that they may share in common and that they may share with GUR1.
See attached plot.