STGR: Stereographic Map Projection

This record specifies a Stereographic map projection to be used for transformations between ellipsoidal and mapping coordinates. Any number of STGR records can be used, each specifying a map projection for a specific area (quadrangle).

The area (quadrangle) of validity for a map projection may be specified by preceding the STGR record with a QUAD record.

The format of the STGR record is as follows:

Columns 002-005: STGR
Columns 007-013: Map projection name (any text)
Columns 015-015: North (n) or south (s) indicator for origin latitude
Columns 016-018: Degrees of origin latitude
Columns 020-021: Minutes of origin latitude
Columns 023-031: Seconds of origin latitude
Columns 033-033: East (e/E/space) or west (w/W/-) indicator for origin longitude
Columns 034-036: Degrees of origin longitude
Columns 038-039: Minutes of origin longitude
Columns 041-049: Seconds of origin longitude
Columns 051-062: Northing of origin (false northing)
Columns 064-075: Easting of origin (false easting)
Columns 077-088: Scale at origin
Columns 090-091: Linear unit name