a0        a1        a2        b0        b1        b2        c0
 2.790e+00 3.266e+01 8.746e+00 1.939e-01 9.718e-01 8.469e-01 8.660e-03
filename:  na_4.fblf 
 parameters to calculate the free bound loss factor (fblf) of: 
Mao J., Kaastra J., Badnell N.R., 2017, A&A, 599, A10 
 
produced as a part of the 'CHIANTI' atomic database for astrophysical spectroscopy 
 K. Dere (GMU) - 2023 November 07