Ambiguity in text discussing auxiliary coordinate variables

[taylor13]

I find the antecdents to the various instances of "their" in the following text ambiguous.

"The axis attribute is not allowed for auxiliary coordinate variables. Auxiliary coordinate variables which lie on the horizontal surface can be identified as such by their dimensions being horizontal, which can in turn be inferred from their having an axis attribute of X or Y , or from their units in the case of latitude and longitude (see Chapter 4, Coordinate Types )."

I propose modifying the text slightly to read:

"The axis attribute is not allowed for auxiliary coordinate variables. Auxiliary coordinate variables which lie on the horizontal surface can be identified as such by their dimensions being horizontal. Horizontal dimensions are those whose coordinate variables have an axis attribute of X or Y, or a units attribute indicating latitude and longitude (see Chapter 4, Coordinate Types)."

[jonathan]

I think your modified text is correct and clearer. Thanks. Jonathan

[mlaker1]

Defect is fixed.