Power-law fits to the rates of radiative 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: pl.dat (167 records)
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   Bytes Format  Units   Label        Explanations
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   1-  2  I2     ---     Z            Atomic number
   4-  5  I2     ---     N            Number of electrons
   7- 14  E8.2   cm^3/s  A            Fit parameter
  16- 20  F5.3   ---     B            Fit parameter
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  /alpha = A*(T/10**4K)**(-B)