**Table 3:** Solar hafnium abundances from the various observed spectra.
Spec	Wavelength	EW	A(Hf)					$\sigma$	Ref.	3D- $\ensuremath {{\rm 1D}_{{\rm LHD}}}$	$\sigma_{\langle{\it EW}\rangle}$	$\sigma_{\rm A}$
	nm	pm	3D	$\ensuremath{\left\langle{\rm 3D}\right\rangle}$	$\ensuremath {{\rm 1D}_{{\rm LHD}}}$	1D $_{\rm ATLAS}$	1D $_{\rm HM}$	dex		dex	%	dex
(1)	(2)	(3)	(4)	(5)	(6)	(7)	(8)	(9)	(10)	(11)	(12)	(13)
NI	338.9	0.489	0.911	0.895	0.883	0.900	0.914	0.02		0.029	0.29	0.0013
DI	338.9	0.477	0.899	0.883	0.871	0.886	0.903	0.02	0.91	0.029
NI	356.2	0.845	0.819	0.801	0.781	0.799	0.821	0.01		0.037	0.31	0.0014
DI	356.2	0.851	0.822	0.805	0.785	0.803	0.824	0.02	0.85	0.037
NF	391.8	0.318	0.823	0.827	0.815	0.836	0.848	0.05		0.008	0.26	0.0011
NI	391.8	0.302	0.911	0.899	0.893	0.912	0.925	0.02		0.018	0.27	0.0012
DI	391.8	0.274	0.867	0.854	0.849	0.868	0.881	0.05	0.91	0.018
KF	409.3	0.317	0.814	0.818	0.805	0.826	0.838	0.07		0.010	0.26	0.0011
NF	409.3	0.318	0.816	0.820	0.806	0.828	0.840	0.07		0.010
NI	409.3	0.292	0.886	0.874	0.865	0.884	0.899	0.02		0.020	0.26	0.0011
DI	409.3	0.268	0.847	0.835	0.827	0.846	0.860	0.04	0.86	0.020

Note: Abundances and their uncertainties - if not noted otherwise - are given on the usual logarithmic spectroscopic scale where A(H)=12. Column (1) is an identification flag, DI means Delbouille and NI Neckel disc-centre spectrum, NF Neckel and KF Kurucz flux spectrum; Col. (4): hafnium abundance, A(Hf), according to the $\ensuremath {{\rm CO}^5{\rm BOLD}}$ 3D model; Cols. (5)-(8): A(Hf) from 1D models, with $\xi$ , micro-turbulence, of 1.0 ${\rm km~ s^{-1}}$ ; Col. (9): uncertainties related to EW measurement; Col. (10) Lawler et al. (2007); Col. (11): 3D corrections; Col. (12): uncertainty of the theoretical equivalent width due to the limited statistics obtained from the 3D model; Col. (13): uncertainty in abundance due to the model uncertainty in equivalent width.

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