cell centered form in TECPLOT

jack

i want to show variables in the center of mesh,but the result showed by TECPLOT is on node,why? the code is below:

write(33,*) 'TITLE = "3D"'

write(33,*) 'VARIABLES = "X" "Y" "Z" "Rho" "U" "V" "W"'

write(33,*) 'DATAPACKING=BLOCK, ZONETYPE=FEBRICK,N=',numnp,',','E=',nelem,',','VAR LOCATION=([4-7]=CELLCENTERED)'

! WRITE(33,*) 'DT=(DOUBLE DOUBLE DOUBLE DOUBLE DOUBLE DOUBLE DOUBLE)'

!----------------------BLOCK TYPE---------------------------------

DO I=1,NUMNP

WRITE(33,*) CX(1,I)

END DO

DO I=1,NUMNP

WRITE(33,*) CX(2,I)

END DO

DO I=1,NUMNP

WRITE(33,*) CX(3,I)

END DO

DO I=1,NELEM

WRITE(33,*) uh(1,I,0.D0,0.D0,0.D0)

END DO

write(33,'(///)')

DO I=1,NELEM

WRITE(33,*) uh(2,I,0.D0,0.D0,0.D0)/uh(1,I,0.D0,0.D0,0.D0)

END DO

write(33,'(//)')

DO I=1,NELEM

WRITE(33,*) uh(3,I,0.D0,0.D0,0.D0)/uh(1,I,0.D0,0.D0,0.D0)

END DO

write(33,'(//)')

DO I=1,NELEM

WRITE(33,*) uh(4,I,0.D0,0.D0,0.D0)/uh(1,I,0.D0,0.D0,0.D0)

END DO

!-----------------------------------------------------------------

write(33,'(/)')

do i=1,nelem

write(33,'(<ncount(i)>i10)') nname(i,1),nname(i,3),nname(i,7),nname(i,5),nname( i,2),nname(i,4),nname(i,8),nname(i,6)

end do

close(33)