ZTG - UTC & Time to Destination Waypoint

        1         2         3    4
        |         |         |    |
 $--ZTG,hhmmss.ss,hhmmss.ss,c--c*hh<CR><LF>

 Field Number: 
  1) Universal Time Coordinated (UTC)
  2) Time Remaining
  3) Destination Waypoint ID
  4) Checksum