So I don't know what's going on, but the table is doing something really terrible. Maybe it vibrates as a response to ventilation, whereas the coupling of ventilation to ground is comparatively weak. Anyway, this is the end of PSL seismic measurements. Data will be kept on one of the machines in 058f. In principle, I could convert the data into frames and copy it to another location, but it may be too much work. I can always easily produce .mat files with averaged spectra etc. Let me know.