What are the definitions of metric types of Counter 5 usage reports?

What are the definitions of metric types of Counter 5 usage reports?

They are:

Metric Type

Description

Total_Item_Investigations

Total number of times a “Content Item” or information related to a “Content Item” was accessed. Double-click filters are applied to these transactions. A “Content Item” could be an “Article”, “Book Chapter”, “Multimedia” files.

Total_Item_Requests

Total number of times a “Content Item” was requested (i.e. the full text or content was downloaded or viewed). Double-click filters applied.

Unique_Item_Investigations

Number of unique “Content Items” investigated in a user-session. Examples of items are “Article”, “Book Chapter”, “Multimedia” files.

Any GOID can only be counted once in a single session.

Unique_Item_Requests

Number of unique “Content Items” requested in a user-session. Examples of items are “Article”, “Book Chapter”, “Multimedia” files.

Any GOID can only be counted once in a single session.

Unique_Title_Investigations

Number of unique Book titles investigated in a user session. Examples of “Titles” are whole books or chapters of books.Any book can only be counted once in a single session.

Unique_Title_Requests

Number of unique Book titles requested in a user session. Examples of “Titles” are  whole books or chapters of books. Any book can only be counted once in a single session.