!-------------------------------------- LICENCE BEGIN ------------------------------------
!Environment Canada - Atmospheric Science and Technology License/Disclaimer,
!                     version 3; Last Modified: May 7, 2008.
!This is free but copyrighted software; you can use/redistribute/modify it under the terms
!of the Environment Canada - Atmospheric Science and Technology License/Disclaimer
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!

      SUBROUTINE oda_maskgp 1,1
      use modmask, only : lmaskgp, lmask
#if defined (DOC)
*
*Purpose : Defines a mask of assimilated data for GP family ZTD data
*
*Author  : S. Macpherson, ARMA, March 2009
*
#endif
      IMPLICIT NONE
*implicits
#include "comdimo.cdk"
#include "comoabdy.cdk"
#include "comoahdr.cdk"
#include "comoba.cdk"
#include "cvcord.cdk"
#include "comnumbr.cdk"
*
      INTEGER IOBS,IPOS,IK,IBEGIN,ILAST,ILASTOB,IBEGINOB,IDATEND
      INTEGER J,JDATA,IDATA,ITYP,ISTYP,JJ,JO,IDATYP
      LOGICAL LLOK
      CHARACTER *2 CDFAM
C
c
      CDFAM = 'GP'
c
c
      DO J = 1,NFILES
        IF ( (CFAMTYP(J) .EQ. CDFAM) .AND.( NBEGINTYP(J) .GT. 0)) THEN
          IBEGIN=NBEGINTYP(J)
          ILAST=NENDTYP(J)
          IBEGINOB = MOBDATA(NCMOBS,IBEGIN)
          ILASTOB  = MOBDATA(NCMOBS,ILAST)
          DO JO = IBEGINOB, ILASTOB
            IDATA   = MOBHDR(NCMRLN,JO)
            IDATEND = MOBHDR(NCMNLV,JO) + IDATA - 1
            IDATYP    = MOD(MOBHDR(NCMITY,JO),1000)
            IF ( IDATYP .EQ. 189 ) THEN
              DO JDATA=IDATA,IDATEND
                ITYP = MOBDATA(NCMVNM,JDATA)
                LLOK = ( (ITYP .EQ. NEZD) .AND.
     &            (MOBDATA(NCMASS,JDATA) .EQ. 1) )
                IF ( LLOK ) THEN
                  lmaskgp(jdata) = .true.
                ENDIF
              END DO
            ENDIF
          ENDDO
        ENDIF
      END DO
      lmask = lmask .or. lmaskgp
      RETURN
      END