! SonTek ADP:
! Column Headers for ADP .HDR File - Heading data has not been corrected to True North
! 
! Col#  Contents  (Units) 
!  1  Profile number  (#)
!  2  Year - Start of profile averaging interval  (GMT)
!  3  Month - Start of profile averaging interval  (GMT)
!  4  Day - Start of profile averaging interval  (GMT)
!  5  Hour - Start of profile averaging interval  (GMT)
!  6  Minute - Start of profile averaging interval  (GMT)
!  7  Second - Start of profile averaging interval  (GMT)
!  8  Samples averaged this profile  (#)
!  9  Speed of sound for velocity computations  (cm/s)
! 10  Mean heading  (degrees)
! 11  Mean pitch  (degrees)
! 12  Mean roll  (degrees)
! 13  Mean temperature  (degrees C)
! 14  Mean pressure  (dBar)   (no pressure at Site MD)
! 15  Standard deviation of heading  (degrees)
! 16  Standard deviation of pitch  (degrees)
! 17  Standard deviation of roll  (degrees)
! 18  Standard deviation of temperature  (degrees C)
! 19  Standard deviation of pressure  (dBar) (no pressure at Site MD)
! 20  Battery Voltage   (V)
