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Table 2 Mean and root mean square misfits between parent model estimate and input data

From: The BGS magnetic field candidate models for the 12th generation IGRF

   Mean (nT)   Root mean square (nT)  
Source Number of data X Y Z F X Y Z F
CHAMP 1,332,591 0.10 −0.19 0.05 - 25.20 27.64 12.25 -
Swarm A 455,091 −0.10 −0.10 0.44 - 34.34 40.15 13.23 -
Swarm B 426,324 −0.45 −0.09 0.17 - 35.06 40.55 12.73 -
Swarm C 407,166 −0.26 −0.18 −0.21 - 34.92 40.49 13.18 -
Observatories 290,532 0.04 −0.00 0.01 - 3.90 3.26 3.24 -
Ørsted 281,967 - - - 0.75 - - - 7.65
CHAMP 20,740 - - - −2.36 - - - 10.34
Swarm A 749 - - - −4.42 - - - 14.41
Swarm B 2,544 - - - −4.96 - - - 18.07
Swarm C 1,196 - - - −2.91 - - - 14.64
Observatories 63,830 - - - −0.07 - - - 18.89
  1. Satellite F misfits are calculated with respect to scalar input data. Observatory F misfits are at high geomagnetic dipole latitude and are calculated with respect to vector data projected onto an a priori model. All observatory vector misfits are at mid and low geomagnetic dipole latitudes. Mid and low latitudes are defined as being between ±50°, with high latitudes outside this range. The number of data quoted counts each component separately.