The files in this directory are support data for PROJ programs.

File Contents:

README  --- This file

nad27   --- North American Datum 1927 for "init=" definition of
			State Plane Coordinate Systems (SPCS).

nad83   --- North American Datum 1983 for "init=" definition of SPCS.

GL27    --- Great Lakes Survey grids, NAD27

world   --- Proj specifications for several international grid systems.

nad.lst --- Reference list of SPCS States and NGS datum identifiers

Additional data files are available in https://github.com/OSGeo/PROJ-data