Table 7 Model statistics of misfit between CHAOS-7 and Swarm data
From: The CHAOS-7 geomagnetic field model and observed changes in the South Atlantic Anomaly
SW-A | SW-B | SW-C | SW-A–SW-C | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
N | Mean | rms | N | Mean | rms | N | Mean | rms | N | Mean | rms | |
\(F_\text {polar}\) (nT) | 23,636 | − 0.06 | 3.61 | 23,128 | 0.05 | 3.39 | 23,863 | 0.07 | 3.59 | |||
\(F_{\text {non-polar}}\) (nT) | 44,992 | − 0.07 | 1.81 | 46,652 | − 0.07 | 1.84 | 45,531 | 0.00 | 1.80 | |||
\(B_r\) (nT) | 44,992 | − 0.04 | 1.52 | 46,652 | − 0.07 | 1.49 | 45,531 | − 0.04 | 1.54 | |||
\(B_\theta\) (nT) | 44,992 | 0.09 | 2.38 | 46,652 | 0.07 | 2.44 | 45,531 | 0.01 | 2.37 | |||
\(B_\phi\) (nT) | 44,992 | 0.00 | 1.91 | 46,652 | − 0.02 | 1.98 | 45,531 | − 0.02 | 1.94 | |||
\(\delta F_\text {AT, polar}\) (nT) | 15,600 | 0.01 | 0.57 | 15,456 | 0.00 | 0.51 | 15,735 | 0.00 | 0.58 | |||
\(\delta F_\text {AT, non-polar}\) (nT) | 30,570 | − 0.00 | 0.14 | 31,658 | − 0.00 | 0.12 | 30,599 | − 0.00 | 0.14 | |||
\(\delta B_{r,\text {AT}}\) (nT) | 22,469 | − 0.00 | 0.23 | 23,178 | 0.00 | 0.22 | 22,958 | − 0.00 | 0.24 | |||
\(\delta B_{\theta ,\text {AT}}\) (nT) | 22,469 | − 0.00 | 0.24 | 23,178 | − 0.00 | 0.23 | 22,958 | 0.00 | 0.25 | |||
\(\delta B_{\phi ,\text {AT}}\) (nT) | 22,469 | 0.00 | 0.31 | 23,178 | 0.00 | 0.30 | 22,958 | − 0.00 | 0.32 | |||
\(\delta F_\text {EW, polar}\) (nT) | 28,738 | − 0.14 | 0.57 | |||||||||
\(\delta F_\text {EW, non-polar}\) (nT) | 55,954 | − 0.08 | 0.35 | |||||||||
\(\delta B_{r, \text {EW}}\) (nT) | 40,617 | − 0.00 | 0.40 | |||||||||
\(\delta B_{\theta ,\text {EW}}\) (nT) | 40,617 | − 0.00 | 0.46 | |||||||||
\(\delta B_{\phi ,\text {EW}}\)(nT) | 40,617 | 0.00 | 0.53 | |||||||||