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Table 1 Time periods, datasets used, and number of parameters for Models A through E

From: Co-estimation of geomagnetic field and in-orbit fluxgate magnetometer calibration parameters

 AB,CDE
Start date2000-07-202000-07-202000-07-202009-01-01
End date2019-12-312019-12-312019-12-312018-12-31
Datasets used    
 CHAMP\(\checkmark\)\(\checkmark\)\(\checkmark\) 
 Swarm\(\checkmark\)\(\checkmark\)\(\checkmark\) 
 Cryosat\(\checkmark\)\(\checkmark\) \(\checkmark\)
 DMSP\(\checkmark\)\(\checkmark\) \(\checkmark\)
 Observatories\(\checkmark\)   
Number of parameters    
 time-dependent internal10 96510 96510 9656120
 static internal2345234523450
 alignment271527158551860
 calibration5580558005580
 total21 60521 60514 16513 560