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Geoid 12A

Geoid 12A for CONUS, Alaska, Hawaii, Guam and Northern Mariana Islands, Puerto Rico and U.S. Virgin Islands and American Samoa in Trimble format ggf files.

Geoid 12A Combined CONUS(G12AUS.ggf - 33493 KB)Trimble format ggf file.
Geoid 12A Alaska(G12AAK.ggf - 20073 KB)Trimble format ggf file.
Geoid 12A Hawaii(G12AHW.ggf - 594 KB)Trimble format ggf file.
Geoid 12A Guam and Northern Mariana Islands(G12AGUAM.ggf - 298 KB)Trimble format ggf file.
Geoid 12A Puerto Rico and U.S. Virgin Islands(G12APR.ggf - 425 KB)Trimble format ggf file.
Geoid 12A American Samoa(G12AAS.ggf - 509 KB)Trimble format ggf file.
Geoid 12A Minnesota(G12A-MN.ggf - 928 KB)Trimble format ggf file based on the WGS-84 ellipsoid for use with Minnesota County Coordinate Systems.
Geoid 12A Wisconsin(G12A-WI.ggf - 712 KB)Trimble format ggf file based on the WGS-84 ellipsoid for use with Wisconsin County Coordinate Systems