GPGST
GPS Pseudorange Noise Statistics
Example: $GPGST,024603.00,3.2,6.6,4.7,47.3,5.8,5.6,22.0*58
Where:
GST Pseudorange noise statistics
024603.00 UTC time of associated GGA fix
3.2 Total RMS standard deviation of ranges inputs to the navigation solution
6.6 Standard deviation (meters) of semi-major axis of error ellipse
4.7 Standard deviation (meters) of semi-minor axis of error ellipse
47.3 Orientation of semi-major axis of error ellipse (true north degrees)
5.8 Standard deviation (meters) of latitude error
5.6 Standard deviation (meters) of longitude error
22.0 Standard deviation (meters) of latitude error