USGS CMG InfoBank Atlas: Indian Ocean 20khz

Legend:
AF	Africa    [no 20khz data]
AND	Andaman Sea    [no 20khz data]
ARS	Arabian Sea    [no 20khz data]
AS	Asia
ATI	Ashmore and Cartier Islands    [no 20khz data]
AU	Australia    [no 20khz data]
BNG	Bay of Bengal    [no 20khz data]
CCK	Cocos (Keeling) Islands    [no 20khz data]
CRL	Coral Sea    [no 20khz data]
CX	Christmas Island    [no 20khz data]
FS	French Southern and Antarctic Lands    [no 20khz data]
GAD	Gulf of Aden    [no 20khz data]
HMD	Heard Island and McDonald Islands    [no 20khz data]
INS	Indonesian Seas    [no 20khz data]
IOT	British Indian Ocean Territory    [no 20khz data]
LK	Sri Lanka    [no 20khz data]
MG	Madagascar    [no 20khz data]
MUS	Mauritius    [no 20khz data]
MV	Maldives    [no 20khz data]
MZC	Mozambique Channel    [no 20khz data]
RE	Reunion    [no 20khz data]
RS	Red Sea    [no 20khz data]
SA	South Atlantic Ocean    [no 20khz data]
FS	French Southern and Antarctic Lands    [no 20khz data]
SOC	Antarctic Southern Ocean    [no 20khz data]
SYC	Seychelles    [no 20khz data]
TE	Tromelin Island    [no 20khz data]
WP	Western Pacific Ocean