"Gary E. Miller" <[email protected]> writes:

> I'm sure we already know that.  We have a lot of experience with F9P, and
> never have seen anything remotely close to this good before.

My own experience with F9P and MaCORS is that I routinely get FIX, and
plots seems to cluster around 1 cm or so.    A friend did that too, but
using a tripod  and being careful about leveling, and comparing a bunch
of 2-minute averages on different days.   Maybe 2 cm peak-peak, and the
published control point coordinates was in that cluster too.   Plotted
on graph paper at 1:1 which showed how good it was, rather than macro
zoom in qgis!

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