PDS_VERSION_ID = PDS3 RECORD_TYPE = STREAM OBJECT = TEXT PUBLICATION_DATE = 2000-02-07 NOTE = "Description of the SPICE directory contents" END_OBJECT = TEXT END The SPICE directory contains a complete set of SPICE kernels for the MGS Pre-Mapping Mission Phase. Each kernel type is stored in a separate subdirectory. Detailed information about the individual kernel files can be found in the info files located in each subdirectory. The subdirectories of the SPICE directory are: CK C-kernel (pointing data for an instrument platform or for a specific instrument) EK Events kernel FK Frames definition kernel IK Instrument kernel LSK Leap second kernel PCK Planetary constants kernel SCLK Spacecraft clock kernel SPK Spacecraft and planet ephemerides kernel