The list of booleans values that represent from where the Ephemeris expects data to be provided for the corresponding column.
If set to 1, then the data is mapped from the corresponding Spacecraft property stored in the ColumnSpacecraftProperties array and will be pulled from there whenever data is added to the Ephemeris. If set to 0, then the data must be manually provided when adding data to the Ephemeris. Data can be added to the Ephemeris either via the Ephemeris.AddVectorData method or with the Put command. Only works for FreeFlyer Ephemeris Version 2.0 and higher.
Timing Precision Mode
This page describes functionality in millisecond timing precision mode.