Equatorial Mercator projection definition format

The Equatorial Mercator projection is defined by the word EM and the following items

• central meridian longitude in decimal degrees
  
  
• standard parallel in decimal degrees

Here is an example of an Equatorial Mercator projection coordinate system.

TEST_EM "Test equatorial mercator" REF_FRAME NZGD49 &
     PROJECTION EM  170 -40