Overpass Turbo - how to search for numeric values greater than a particular number?

Using taginfo, I can see how many examples of a key/value combination there are. From there I can use overpass to see where they are.

How can I search for numeric values larger than a particular number (rather than equal to a particular value)?

nwr[diameter_crown](if: t['diameter_crown'] > 6)({{bbox}});
out geom;

via Working with Numbers

Note that sometimes you need to use is_number() to filter out non-numeric values:

nwr[diameter_crown](if: t['diameter_crown'] > 6 && is_number(t['diameter_crown']))({{bbox}});
out geom;