Table 6: Ionic concentrations and chemical abundances in NGC 6826. Wavelength in angstrom for all values of $\lambda $ above 1000, otherwise in $\mu $m.
Ion $\lambda $ Intens./H$\beta $ $N_{{\rm ion}}$/ $N_{{\rm p}}$ ICF $N_{{\rm el.}}$/ $N_{{\rm p}}$
He+ 5875 14.3 0.095 1 0.95
C+ 2325 3.24 1.15(-5)    
C++ 1909 83.2 4.32(-4) 1.2 5.3(-4)
N+ 6584 8.79 2.16(-6)    
N++ 1750 1.67 2.63(-5)    
N++ 57.3 49.8 5.69(-5) 1 5.0(-5)
O+ 3726 14.9 1.8(-5)    
O++ 5007 753. 3.72(-4)    
O++ 51,8 265. 2.82(-4) 1 4.0(-4)
Ne+ 12.8 4.1 6.33(-6)    
Ne++ 15.5 110. 7.23(-5)    
Ne++ 3869 49.2 2.23(-4) 1 1.5(-4)
S+ 6731 0.582 3.7(-8)    
S++ 6312 0.604 1.96(-6)    
S++ 18.7 16.7 1.59(-6)    
S+3 10.5 34.7 9.1(-7) 1 2.8(-6)
Ar++ 8.99 10.6 1.07(-6)    
Ar++ 7136 11.3 1.31(-6)    
Ar+3 4740 0.36 1.6(-7) 1 1.4(-6)
Cl++ 5538 0.391 7.56(-8)    
Cl+3 7531 0.041 1.09(-8) 1 9.0(-8)
K+3 6101 0.013 1.5(-9)    
K+4 4163 0.005 1.5(-9) 1: 3.0(-9):
P++ 17.8 1.22 8.3(-8) 2: 1.7(-7)
Si++ 1890 2.99   1  
$\textstyle \parbox{8cm}{ Intensities given with respect to H$\beta$ ~=~100.}$


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