Alternator Amp test

Here's the results from a chain store tester
upload_2021-6-11_14-13-38.png upload_2021-6-11_14-14-7.png

What's it tell us?
Exactly.
Not much.
The machine must have put a load on it, but what that load was and how fast it was spinning is unknown.

Here's the test results from the rebuilder factory. Same alternator.
It's quite a bit more informative.
upload_2021-6-11_14-22-3.png

What's the amp rating ?