The GUI that I managed to pull up from the Monticello at home is a little different (seems to be an old version), but appears to display the same information. See attached snapshot.
Some observations:
The x-profile seems pretty asymmetric.
The rms widths are a little small for our ~2x2 raster, but at least they're in the right ballpark(?)
The central position of (0,-1.5) should be (0, +1.5). So it's off by a
sign in y -- don't know about x.
Figure 1