anchor.diff:  ! Set constants
     Pi=4.0_dp*datan(1.0_dp)
   
  -  do i=0,4
  -    do j=0,4
  +  do i=1,4
  +!     do j=1,4
   !       do k=0,4
   
   ! Set experimental data
  
positive.code:            -Uc,  0,   0,  V, &
               0, Uf,   V,  0 /)
  
          call write_data(0.25_dp*j,0.1_dp)
  !       end do
      end do
    end do
  
    open(10, file="susy_qpi.log", position="append", status="old")
  
negative.code:         mu  = 0.1_dp*t
          x0  = 0.02_dp
          epsf= 0.1_dp*x0
          Uc  = 0.1_dp*i
          Uf  = 0.1_dp*i
          V   = 0.1_dp
  
  ! Set up matrix as an array of size 16
  