Table 1. Mean and root mean square misfits between parent model estimate and input data, shown separately for data sources and by geomagnetic latitude. Mid and low geomagnetic latitudes are defined as being between ±50 degrees, with high latitudes defined as being outside this range. Satellite F misfits are calculated with respect to scalar input data. Observatory F misfits are calculated with respect to vector data projected onto an apriori model. The number of data quoted counts each component separately.
From: The BGS magnetic field candidate models for the 11th generation IGRF
Mean (nT) | Root mean square (nT) | ||||||||
|---|---|---|---|---|---|---|---|---|---|
Source | No. of data | X | Y | Z | F | X | Y | Z | F |
Mid and low latitudes | |||||||||
CHAMP | 438,898 | −0.11 | 0.13 | 0.00 | −0.09 | 5.37 | 2.74 | 5.17 | 3.63 |
Ørsted | 123,066 | −0.69 | −0.50 | 0.10 | 1.10 | 7.38 | 5.86 | 5.94 | 3.75 |
Observatories | 304,648 | −0.29 | 0.18 | −0.14 | — | 7.18 | 5.15 | 7.09 | — |
High latitudes | |||||||||
CHAMP | 215,822 | 1.57 | 0.52 | −1.52 | −4.20 | 18.83 | 19.09 | 12.23 | 11.63 |
Ørsted | 63,402 | 2.90 | 1.03 | 0.47 | −0.43 | 19.30 | 19.94 | 7.23 | 5.59 |
Observatories | 52,527 | — | — | — | −0.46 | — | — | — | 16.30 |
All latitudes | |||||||||
CHAMP | 654,720 | 0.44 | 0.26 | −0.50 | −1.44 | 11.67 | 11.19 | 8.20 | 7.31 |
Ørsted | 186,468 | 0.61 | 0.06 | 0.24 | 0.61 | 13.03 | 12.88 | 6.44 | 4.43 |