cable.f

c     read gh##0
C      cut data during course change dhead>10
c
c
c      data read gh##0
c
c     **** data ****
c     iyr:Year, jdy:Julian day, min:time(GMT in minutes),
c     alat(latitude TKY deg), alon(longitude TKY deg),
c     spd:speed, hg:course(clockwise from North), 
c     idpc:corrected depth, mgt:total magnetic force,
c     mga:magnetic anomaly, gr:gravity reading, gt1:absolute gravity value,
c     ga:free-air anomaly
c
c     1984年から1分データ。それ以前は5分データ。
c
      dimension iyr(30000),jdy(30000),min(30000),fair(30000)
      dimension alt(30000),aln(30000),jdp(30000),mgt(30000),gt1(30000)
      dimension mga(30000),grard(30000),spd(30000),hdg(30000)
c
      open(10,file='gh90a.data0',status='old')
      open(20,file='gh90a.datam0')
c
      k=0
    1 continue
         k=k+1
         read(10,*,end=99) iyr0,jdy0,min0,alat0,alon0,
     +   spd0,hg0,idpc0,mgt0,mga0,gr0,gt10,ga0
          iyr(k)=iyr0
          jdy(k)=jdy0
          min(k)=min0
          alt(k)=alat0
          aln(k)=alon0
          spd(k)=spd0
          hdg(k)=hg0
          jdp(k)=idpc0
          mgt(k)=mgt0
          mga(k)=mga0
          grard(k)=gr0
          gt1(k)=gt10
          fair(k)=ga0
         go to 1
   99 close(10)
      jnum=k
      write(6,*) jnum
c
      do 10 i=1, jnum-1
         kmin=min(i+1)-min(i)
         if(kmin.eq.1) then
          write(20,205) iyr(i),jdy(i),min(i),alt(i),aln(i),
     +                spd(i),hdg(i),jdp(i),mgt(i+1),mga(i+1),
     +                grard(i),gt1(i),fair(i)
          go to 10
         end if
   10 continue
      close(20)
  205 format(i2,i4,i5,f10.5,f11.5,f6.2,f6.1,i6,i6,i6,f8.1,f10.1,f8.1)
      stop
      end