Table S5.

Preexposure ε¹⁸²W, ε¹⁸³W, and Hf-W model ages of iron meteorite groups

Iron Meteorite Group	N	ε182Wpreexposure, 95% conf.	ε183W, ±95% conf.	ΔtCAI *, My, ±2σ
NC reservoir
IC	5	−3.45 ± 0.04	−0.05 ± 0.02	0.3 ± 0.5
IIAB	8	−3.40 ± 0.03	−0.02 ± 0.02	0.8 ± 0.5
IIIAB	13	−3.35 ± 0.03	−0.03 ± 0.02	1.2 ± 0.5
IIIE	5	−3.28 ± 0.06	−0.05 ± 0.04	1.8 ± 0.7
IVA	6	−3.32 ± 0.05	0.00 ± 0.07	1.5 ± 0.6
CC reservoir
IIC	2	−3.20 ± 0.12	0.30 ± 0.04	2.6 ± 1.3
Wiley (IIC)	1	−3.23 ± 0.11	0.52 ± 0.06	2.3 ± 1.2
IID	12	−3.23 ± 0.04	0.13 ± 0.01	2.3 ± 0.6
IIF	1	−3.21 ± 0.05	0.09 ± 0.02	2.5 ± 0.7
IIIF	2	−3.24 ± 0.10	0.08 ± 0.07	2.2 ± 1.1
IVB	14	−3.18 ± 0.05	0.13 ± 0.02	2.8 ± 0.7

^*Two-stage Hf-W model age of core formation (in million years), given relative to the time of CAI formation.