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Name Template: PUB/MISSION/level1a/igsPol/igsPol_YYYY.DDD.HH.MM.UUUU_igs

DDDDay of year
HHHour
MISSIONMission ID (eight characters or less--champ, champrt, sacc, sacctst, etc)
MMMinute
PUBBase directory for the pub hierarchy
UUUUDuration of file in minutes
YYYYYear

GPS pole file from the IGS in IGS format. These files are matched with the IGS GPS orbit files. These files are available from the IGS.