Fits to the rates of high-temperature dielectronic recombination.
S. M. V. Aldrovandi & D. Pequignot (1973, A&A, 25, 137),
J. M. Shull & M. Van Steenberg (1982, ApJS, 48, 95),
M. Arnaud & R. Rothenflug (1985, A&AS, 60, 425).

Fit parameters for radiative recombination rates.
Byte-per-byte description of file: hdr.dat (167 records)
-------------------------------------------------------------------------------
   Bytes Format  Units   Label        Explanations
-------------------------------------------------------------------------------
   1-  2  I2     ---     Z            Atomic number
   4-  5  I2     ---     N            Number of electrons
   7- 14  E8.2   ---     A            Fit parameter
  16- 23  E8.2   ---     B            Fit parameter
  25- 32  E8.2   K       T0           Fit parameter
  34- 41  E8.2   K       T1           Fit parameter
-------------------------------------------------------------------------------
  /alpha = A*T**(-3/2)*exp(-T0/T)*[1+B*exp(-T1/T)] cm**3/s