Table 3. Open in new tab Ions included...

Table 3.

Ions included in the fits and their atomic data sets.

Ion	Levels^a	Ref. \|$A_{ij}$\|^b	Ref. \|$\Upsilon _{ij}$\|^c
Fe ii	52	Bautista et al. (2015)	Bautista et al. (2015)
Fe iii	39	Quinet (1996)	Zhang (1996)
Co ii	15	Storey, Zeippen & Sochi (2016)	Storey et al. (2016)
Co iii	15	Storey & Sochi (2016)	Storey & Sochi (2016)
Ni ii	18	Cassidy, Hibbert & Ramsbottom (2016)	Cassidy et al. (2010)
Ni iii	9	Fivet, Quinet & Bautista (2016)	Watts & Burke (1998)

Ion	Levels^a	Ref. \|$A_{ij}$\|^b	Ref. \|$\Upsilon _{ij}$\|^c
Fe ii	52	Bautista et al. (2015)	Bautista et al. (2015)
Fe iii	39	Quinet (1996)	Zhang (1996)
Co ii	15	Storey, Zeippen & Sochi (2016)	Storey et al. (2016)
Co iii	15	Storey & Sochi (2016)	Storey & Sochi (2016)
Ni ii	18	Cassidy, Hibbert & Ramsbottom (2016)	Cassidy et al. (2010)
Ni iii	9	Fivet, Quinet & Bautista (2016)	Watts & Burke (1998)

Energy levels and statistical weights are taken from NIST (Kramida et al. 2018).

Einstein A coefficient between levels i and j.

Maxwellian averaged collisional strength between levels i and j.