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 (\(N_{o}^{*}\), in %), dimensionless L2 data misfit \({\mathcal{M}}^*\) and bias \(\mu ^*\), and dimensional L2 data misfit \({\mathcal{M}}\) and bias \(\mu \)
From: COV-OBS.x2: 180 years of geomagnetic field evolution from ground-based and satellite observations
Dataset | \(N_o\) | \(N_o^*\) (%) | \({\mathcal{M}}^*\) | \(\mu ^*\) | \({\mathcal{M}}\) | \(\mu \) | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
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 |