| Legend: |
|
CAM
|
Central America
|
|
CP
|
Central Pacific Ocean
|
|
GAN
|
Greater Antilles
[no 20khz data]
|
|
GM
|
Gulf of Mexico
|
|
LAN
|
Lesser Antilles
[no 20khz data]
|
|
NA
|
North Atlantic Ocean
|
|
ANT
|
Netherlands Antilles
[no 20khz data]
|
|
SAM
|
South America
[no 20khz data]
|
|
SUE
|
Southern US, Eastern Section
|