Not defined in Darwin Core. M value that is part of a linear reference system. The properties CoordinateX, CoordinateY, CoordinateZ, CoordinateM and CoordinateSystemWkt defines where the species observation was made.

public string CoordinateM { get; set; }

Public Property CoordinateM As String
	Get
	Set

public:
property String^ CoordinateM {
	String^ get ();
	void set (String^ value);
}

member CoordinateM : string with get, set