The plane coordinates of a point on the earth's surface, to be used in expressing the position or location of the point in the appropriate zone of this system, consist of two distances, expressed in feet and decimals of a foot when using the Alaska Coordinate System of 1927 and expressed in meters and decimals of a meter when using the Alaska Coordinate System of 1983. One of these distances, known as the “x-coordinate,” gives the position in an east-and-west direction; the other known as the “y-coordinate” gives the position in a north-and-south direction. These coordinates shall be made to depend upon and conform to the coordinates of the North American Horizontal Geodetic Control Network as determined by the National Geodetic Survey, National Ocean Service.