Image Name                   :  g96pr
Boundaries                   :  Lat 15N to 21N ; Lon 292E to 296E
Color Scale, Upper (Red)     : -34.4 meters and higher
Color Scale, Lower (Magenta) : -78.8 meters and lower 
Data Max value               : -34.4 meters
Data Min value               : -78.8 meters
Illuminated from the         :  North

  This is an image generated from 2'x2' geoid undulations covering 
Puerto Rico and the Virgin Islands.  Some interesting features to note about
this image are:

  The large E/W magenta feature is the effect of the Puerto Rico trench
upon the geoid.  The significant lack of mass in the trench (as deep as
26,500 feet in this area) causes a weaker gravity signal, and subsequently
a depression in the surface of the geoid itself.

das/dgm 10/18/96