Table 2.

Errors statistics for the GO and VO (CHAMP and Swarm) datasets integrated in COV-OBS.x2: accepted number of data $N_o$, fraction of rejected data ($N_o^{\ast }$, in %), dimensionless L2 data misfit ${\mathcal{M}}^{\ast }$ and bias ${\mu }^{\ast }$, and dimensional L2 data misfit $\mathcal{M}$ and bias $\mu$

Dataset	$N_o$	$N_o^{\ast }$ (%)	${\mathcal{M}}^{\ast }$				${\mu }^{\ast }$				$\mathcal{M}$				$\mu$
			X	Y	Z	F	X	Y	Z	F	X	Y	Z	F	X	Y	Z	F
GO	21056	5.57	1.27	0.79	1.11	$-$	$-$0.01	0.00	$-$0.04	$-$	4.55	2.87	4.22	$-$	$-$0.01	$-$0.01	$-$0.15	$-$
CHAMP	17525	5.17	1.28	1.02	1.04	0.99	0.01	0.04	0.10	0.05	3.42	2.59	2.57	3.04	0.04	0.11	0.28	0.15
Swarm	13354	3.77	1.31	0.85	0.94	0.92	0.10	$-$0.04	0.11	0.08	3.14	2.11	2.10	2.69	0.28	$-$0.05	0.25	0.23
Total	51935	4.98	1.29	0.89	1.04	0.96	0.02	0.01	0.04	0.06	3.88	2.61	3.28	2.89	0.08	0.02	0.09	0.19

Dimensional misfits and biases are in units of nT for VOs, and nT/year for GO