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4.1.1 NMEA Messages
The serial interface protocol is based on the National
Marine Electronics Association's NMEA 0183 ASCII
interface specification. This standard is fully define in
"NMEA 0183, Version 3.01" The standard may be obtained
from NMEA, www.nmea.org
4.1.2 GGA - GPS FIX DATA
Time, position and position-fix related data (number of
satellites in use, HDOP, etc.).
Format:
$GPGGA,<1>,<2>,<3>,<4>,<5>,<6>,<7>,<8>,<9>,
M,<10>,M,<11>,<12>,*<13><CR><LF>
Example:
$GPGGA,104549.04,2447.2038,N,12100.4990,E,1,06,
01.7,00078.8,M,0016.3,M,,*5C<CR><LF>