Not really.
The alt gauge measures Amps
The voltage regulator regulates the voltage going into the battery based on the load on the alternator.
So if you have a high load like the lights are on. The ammeter will read discharge then with the engine running the ammeter will read in the middle because the alternator is supplying just the amount of power the load needs.
If the ammeter is reading high then it is trying to power a high load between the ammeter and the battery or the battery itself.
I had a similar situation a week or so ago.
Turns out the battery was on its way out. Not saying that's your issue.
My symptoms were 10 amp charge current but the charge voltage was low like 13 v