Name Template: PUB/MISSION/level1b/leoOrb/leoOrb_YYYY.DDD.LLL.NN_SSSS.VVVV_sp3

DDD	Day of year
IIII	Mission ID (CHAM, SACC, CO01-06, GPSM, etc)
LLL	LEO number (1-6 for COSMIC)
MISSION	Mission ID (eight characters or less--champ, champrt, sacc, sacctst, etc)
NN	Dump number since midnight
PUB	Base directory for the pub hierarchy
SSSS	Subtype (an ID which tells the command options used in generating this file)
VVVV	Version (an ID which tells the version of all codes using in generating thie file)
YYYY	Year

LEO orbit specification file. Contains LEO orbit info for the period of the download (for real time files) or for one day (for post-processed files). Specified in SP3 format (see the SP3 format definition for details).