Notes. Lifetimes used in the analysis include experimental^(b,d) and theoretical^(c,e) sources. Residuals have been derived from the calculated transition rates by Papoulia et al. (2019), for all levels except 7s, for which the values from Kurucz (1995) were used. The residuals have not been taken into account when estimating Unc_BF. We chose to use the naming convention of the second term in the series as 3s²nd ²D, noting that a large contribution is from the 3s3p^{2 2}D term, however not its largest component. For further discussion, see Papoulia et al. (2019). ^(a) Wavenumbers and wavelengths are from the NIST database (Kramida et al. 2021), based on studies by Eriksson & Isberg (1963), Biémont & Brault (1987), and Chang (1990). All wavelengths given are in a vacuum, λ_vac. ^(b) Buurman et al. (1986); ^(c) Papoulia et al. (2019); ^(d) Davidson et al. (1990); ^(e) Kurucz (1995).