Sandia Module Library '(E)' Designation

I would like to know what an "(E)" next to the vintage indicates.

Here is an explanation in the Module topic in SAM's Help system :


The letter "E" indicates that the coefficients were estimated from a combination of published manufacturer specifications and data from the outdoor testing of a similar module. Entries without an "E" are for modules whose coefficients were derived entirely from outdoor tests involving one more or more modules of that type.

Because the tested modules (listed without an "E") may have had different average power ratings than production versions of the same module, the database typically also includes an "E" entry for each of the tested modules that represents the average power rating specified by the manufacturer.


Best regards,
Paul.