STER: Double Stereographic Map Projection

This record specifies a Double Stereographic map projection to be used for transformations between ellipsoidal and mapping coordinates. Any number of STER 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 STER record with a QUAD record.

Note that the XSTR (extended Stereographic) record allows the specification of seconds of origin latitude and longitude (in addition to degrees and minutes), whereas the STER record only allows the specification of degrees and minutes.

The format of the STER record is as follows:

Columns 002-005: STER
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 - 023: East (e) or west (w) indicator for origin longitude
Columns 024-026: Degrees of origin longitude
Columns 028-029: Minutes of origin longitude
Columns 031-042: Northing of origin (false northing)
Columns 044-055: Easting of origin (false easting)
Columns 057-068: Scale at origin
Columns 070-071: Linear unit name