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M Letter M.
g.g
Difference between the WGS-84 reference ellipsoid surface
and the mean-sea-level altitude.
M Letter M.
a.a NULL (not implemented)
xxxx NULL (not implemented)
*hh Check sum
<CR><LF>
End
Ex:$GPGGA,084053.39,6016.3051,N,02458.3735,E,0,00,0.0,46.6,M,18.2,M,,*5D
$GPGSA,a,b,xx,xx,xx,xx,xx,xx,xx,xx,xx,xx,xx,xx,p.p,h.h,v.v*hh<CR><LF>
a Mode:
M = Manual, forced to operate in 2D or 3D mode.
A = Automatic, allowed to automatically switch 2D/3D.
b Mode: 1 = Fix not available
2 = 2D,
3 = 3D,
xx ID (PRN) numbers of GPS satellites used in solution
p.p PDOP
h.h HDOP
v.v VDOP
*hh Check sum
<CR><LF> End
Ex:$GPGSA,A,3,06,10,15,16,21,25,30,,,,,,2.1,1.2,1.8*38