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Table 1 Data selection criteria

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

Quantity/index   Satellite   Observatory
Kp   ≤2− now   ≤2+
   ≤2− previous 3 h   
|dDst/dt |   ≤5 nT/h   ≤5 nT/h
IMF B x (nT)   ≥−10 and ≤+10   -
IMF B y (nT)   ≥−3 and ≤+3   -
IMF B z (nT)   ≥0 and ≤+6   ≥−2
Solar wind speed (km/s)   ≤450   -
Local time (hh:mm)   ≥22:30 and ≤05:00   ≥01:00 and ≤02:00
   for geomagnetic latitudes between ± 50°   
|Observed field - IGRF-11 | (nT)   ≤700   -
|Scalar F-F from vector | (nT)   ≤2   -
Manual rejection   Yes, see below   Yes
Rejected Swarm Level 1b data:     
SW_OPER_MAGA_LR_1B_20140104T000000_20140104T235959_0302_MDR_MAG_LR   
SW_OPER_MAGA_LR_1B_20140129T000000_20140129T235959_0302_MDR_MAG_LR   
SW_OPER_MAGA_LR_1B_20140130T000000_20140130T235959_0302_MDR_MAG_LR   
SW_OPER_MAGA_LR_1B_20140206T000000_20140206T235959_0302_MDR_MAG_LR   
SW_OPER_MAGB_LR_1B_20140101T000000_20140101T235959_0302_MDR_MAG_LR   
SW_OPER_MAGC_LR_1B_20131218T000000_20131218T235959_0302_MDR_MAG_LR   
SW_OPER_MAGC_LR_1B_20140325T000000_20140325T235959_0302_MDR_MAG_LR   
SW_OPER_MAGC_LR_1B_20140326T000000_20140326T235959_0302_MDR_MAG_LR   
SW_OPER_MAGC_LR_1B_20140404T000000_20140404T235959_0302_MDR_MAG_LR   
SW_OPER_MAGC_LR_1B_20140409T000000_20140409T235959_0302_MDR_MAG_LR   
SW_OPER_MAGC_LR_1B_20140318T000000_20140318T235959_0301_MDR_MAG_LR   
SW_OPER_MAGC_LR_1B_20140319T000000_20140319T235959_0301_MDR_MAG_LR   
SW_OPER_MAGC_LR_1B_20140401T000000_20140401T235959_0301_MDR_MAG_LR   
  1. All criteria must be passed for a datum to be selected. Manual rejection refers to rejection of data based on visual inspection of the time series. The manually rejected Level 1b Swarm data can be uniquely identified by the file names given.