Table 1. Mean and rms residuals (in nT) of the main field candidate models for epoch 2005.0 with respect to the testing dataset. Residuals are calculated for the field intensity (dF) and each component of the vector field (dB r , dB θ , dB ϕ ), in nonpolar (−60° to 60° magnetic latitudes) and/or polar regions.
From: Testing IGRF-11 candidate models against CHAMP data and quasi-definitive observatory data
A | B | C | D | E | F | G | |
|---|---|---|---|---|---|---|---|
mean dF polar | −3.40 | −2.87 | −4.56 | −11.99 | −4.06 | −0.94 | −3.49 |
rms dF polar | 8.03 | 7.36 | 10.07 | 16.20 | 8.73 | 6.73 | 7.77 |
mean dF nonpolar | −0.05 | −0.54 | 0.61 | −2.58 | −1.07 | −0.61 | −0.55 |
rms dF nonpolar | 5.04 | 5.12 | 5.35 | 7.03 | 5.29 | 5.15 | 4.98 |
mean dB r nonpolar | −0.43 | −0.53 | −0.58 | −0.87 | −0.75 | −0.66 | −0.41 |
rms dB r nonpolar | 5.30 | 5.25 | 5.73 | 7.67 | 5.66 | 5.52 | 5.31 |
mean dB θ nonpolar | −0.24 | 0.05 | −0.54 | 2.69 | 0.51 | −0.13 | 0.23 |
rms dB θ nonpolar | 5.86 | 5.87 | 5.72 | 7.46 | 6.17 | 6.02 | 5.82 |
mean dB ϕ nonpolar | 0.02 | 0.08 | 0.08 | 0.11 | 0.13 | 0.02 | 0.12 |
rms dB ϕ nonpolar | 4.57 | 4.49 | 4.77 | 4.88 | 4.47 | 4.46 | 4.48 |