2.3.1 spase://CNES/NumericalData/CDPP-AMDA/MMS/MMS4/Models/mms4-msph-models distance to neutral sheet Distance to model neutral sheet 2020-07-31T00:00:00Z * Distance (Re) from s/c location to Fairfield1970 neutral sheet position. Depends on spacecraft location in SM coordinates and dipole tilt angle. Valid for Ysm less than 15 Re. * Distance (Re) from s/c location to Fairfield1980 neutral sheet position. Depends on spacecraft location in SM coordinates and dipole tilt angle. TBD spase://CNES/Person/Christian.Jacquey TechnicalContact mms4-orb-t89d spase://SMWG/Repository/CNES/CDPP-AMDA Online Open AMDA at CDPP http://amda.cdpp.eu Text IRAP spase://CNES/Instrument/CDPP-AMDA/MMS4/Models Ephemeris 1970-01-01T00:00:00Z 2025-01-01T00:00:00Z PT1M Earth dZ Fairfield70 dz_fairfield70_mms4_xyz_gse Distance (Re) from s/c location to Fairfield1970 neutral sheet position. Depends on spacecraft location in SM coordinates and dipole tilt angle. Valid for Ysm less than 15 Re. Re dZ Fairfield80 dz_fairfield80_mms4_xyz_gse Distance (Re) from s/c location to Fairfield1980 neutral sheet position. Depends on spacecraft location in SM coordinates and dipole tilt angle. Re