anchor.diff:      logical, dimension(num_conductivity_channels), parameter ::  &
       &   cond_use_all = [ .TRUE., .TRUE., .TRUE., .TRUE., .TRUE., .TRUE., .TRUE.]
       logical, dimension(num_conductivity_channels), parameter :: &
  -    &   cond_use_only_conduction = [ .TRUE., .TRUE., .TRUE., &
  +    &   cond_use_only_electrons = [ .TRUE., .TRUE., .TRUE., &
       &   .FALSE., .FALSE., .FALSE., .FALSE. ]
       logical, dimension(num_conductivity_channels), parameter :: &
       &   cond_use_only_kap = [ .FALSE., .FALSE., .FALSE., &
  
positive.code:     use constants_def, only: dp
  
      ! used for mask array to control which components are included
      integer, parameter :: &
      &       icond_ee    = 1,     &  ! electron conduction, electron scattering
      &       icond_ei    = 2,     &  ! electron conduction, ion scattering
  
negative.code:     logical, dimension(num_conductivity_channels), parameter :: &
      &   cond_exclude_neutrons = [ .TRUE., .TRUE., .TRUE., &
      &   .FALSE., .FALSE., .FALSE., .TRUE. ]
      logical, dimension(num_conductivity_channels), parameter :: &
      &   cond_exclude_radiation = [ .TRUE., .TRUE., .TRUE., &
      &   .TRUE., .TRUE., .TRUE., .FALSE. ]
  
      ! flag to control which ee scattering fmla. is used. 
      ! default: Shternin & Yakovlev (2006)
  