Sorting on a Custom Traffic Variable Column

[#1]

I have a Traffic Variable (or prop, or Custom Traffic) I've labeled "Response time in secs".  When I view this item (via Custom Traffic > Custom Traffic 1-10 > Response time in secs), I have 3 columns and all but the column I'd like to sort is not an option (no hyperlink to envoke the sort logic).  Any other way I can make a view that show the variable in decending order.  My end goal is to add this to the Dashboard so we can keep track of the high page response times.

Thanks,

~~~Robert