The method 7, wherein {HEAD ~ a portion} of said {TAIL ~ non SATPS position determination data} is acquired by an instrument for sensing a magnetic field 
of
The method 7 , wherein { HEAD ~ a portion } of said { TAIL ~ non SATPS position determination data } is acquired by an instrument for sensing a magnetic field
OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH