1         2 3       4 5        6 7   8   9   10  11 12|
       |         | |       | |        | |   |   |    |   | | |
$--RMC,hhmmss.ss,A,llll.ll,a,yyyyy.yy,a,x.x,x.x,xxxx,x.x,a*hh
1) Time (UTC)
2) Status, V = Navigation receiver warning
3) Latitude
4) N or S
5) Longitude
6) E or W
7) Speed over ground, knots
8) Track made good, degrees true
9) Date, ddmmyy
10) Magnetic Variation, degrees
11) E or W
12) Checksum

GSV Satellites in view
       1 2 3 4 5 6 7 n
       | | | | | | | |
$--GSV,x,x,x,x,x,x,x,...*hh

GLL Geographic Position – Latitude/Longitude
       1       2 3        4 5         6 7
       |       | |        | |         | |
$--GLL,llll.ll,a,yyyyy.yy,a,hhmmss.ss,A*hh

GGA Global Positioning System Fix Data. Time, Position and fix related data
for a GPS receiver
       1         2       3 4        5 6 7  8   9 10  11 12 13 14    15
       |         |       | |        | | |  |   |   | |   | |   |    |
$--GGA,hhmmss.ss,llll.ll,a,yyyyy.yy,a,x,xx,x.x,x.x,M,x.x,M,x.x,xxxx*hh