Hyperfine structure profile fit results (for spectra)

Observation version 1 (dynamic size) since 22-feb-2021:
The section size is now dynamic and can offer space for less or more than 3 lines, always with mhfslin $\ge$ nline. mhfslin, and thus the array sizes (mhfsfit), is implicit and can be guessed from the section length (by reverting the class_sec_hfs_len formula below). Using mhfslin $= 3$ ensures backward compatibility with older CLASS versions. Other values are read incorrectly with such versions.

Observation version 1 (static size):

  ! HFS: "Hyperfine Structure" profile fit results (e.g. NH3, HCN, for spectra).
  integer(kind=4), parameter :: class_sec_hfs_id=-13
  integer(kind=4), parameter :: mhfslin=3
  integer(kind=4), parameter :: nhfspar=4  ! Number of parameters per line
  integer(kind=4), parameter :: mhfsfit=nhfspar*mhfslin
  integer(kind=4), parameter :: class_sec_hfs_len=3+2*mhfsfit
  type hfs
     sequence
     integer(kind=4) :: nline          ! Number of components
     real(kind=4)    :: sigba          ! Sigma on base
     real(kind=4)    :: sigra          ! Sigma on line
     real(kind=4)    :: nfit(mhfsfit)  ! Fit results
     real(kind=4)    :: nerr(mhfsfit)  ! Errors
  end type hfs