The document contains N volumes
The document tested is a part. 
Perform the operation based on the number of density values in the document.
The test is selected from the list: " Equal to," " Not equal to, " " Greater than or equal to, " or " Less than or equal to." The density must be a numeric value. It can be entered using the keyboard or the drop-down list.
Example: If the number of density values in the document is greater than "6," then the operation is applied.
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