Grid: Seward Peninsula Composite Mag 

Author: John Cady, USGS, 1995

Datum: IGRF removed

Data format: Ascii format, XYZ records
             Longitude (degrees), Latitude (degrees), Total Field (nT)
             written with FORTRAN format: (f10.5,x,f10.5,x,f8.1)

Notes:

This composite grid was prepared under contract to the State of Alaska,
Division of Geological and Geophysical Surveys.  A paper map is available
from the State of Alaska (Laurel Burns, coauthor).

This grid combines data from surveys 3005A, 3005D, 3005F, AK07, and 6008.
The grid also contains some smaller undocumented surveys.