wind_gill_true.txt

  WindObserver 70/75 Ultrasonic Anemometer
  Computed true wind speed. Uses SeaPath 320+ for reference heading source.

  Model: 1390-75-B-313
  Serial Number: 1351005 - WC45
  Location: Forward mast
  Sample rate: 1 per second

  Example data line:
    wind_gill_fwdmast_true  2014-12-12T07:25:11.4542Z  $WIMWD,81.4,T,,M,6.9,N,3.6,M*43

  Field Descriptions:
    Logger ID
    Time Stamp [UTC]
    NMEA ID
    Wind direction, 0 to 359 degrees,T[True]
    Wind direction, 0 to 359 degrees,M[Magnetic]
    Wind speed, N[knots]
    Wind speed, M[meters/second]
    Checksum