This is what I came up with. See attached. When I used your fixed Lat/Lon coordinates, the difference was almost nothing. When I processed your base with the CORS, I had an elipsoid height of 70.141. I was using Geoid Model NLGEO2004. When I entered the EH of 72.405 the error was increased by about 2 meters on the height.
The 1.683 is the identical height of the rover so I don’t think that was it for the base. After losing mine a couple of times, that is why I now enter a single survey point on the base so I have it recorded 
Christian Survey 2.zip (115.9 KB)