Slide 11 of 18
This seems to work out fine, now this is relative to VOGS. Most of the
annual variations disappear, but not all of them (noise).
Perhaps there is some kind of scaling introduced by the fact that the
reference station does not have the coordinates it's supposed to.
Although studies show that REYK is stable and behaves well in the longterm,
it seems to be moving periodically, whatever causes that motion.
There is still some kind of a transient signal remaining
in the timeseries that occurs before the June 2000 earthquake sequence.
Perhaps this is some kind of a precursor, coincidence or processing