User privacy in report data

Hello, I have now been looking for a while of a way to get the number of MAU of my appstore app through the apple connect API. I ended up thinking i might actually be able to compute it with https://developer.apple.com/documentation/analytics-reports/app-sessions this App Sessions report. My question is thus the following : Does the Sessions number actually gives me the number of all sessions, or only those from opt-in users ? It says that it is based on users who have agreed to share their data with Apple and developers, so I was wondering whether or not through the use of the methods described on this page https://developer.apple.com/documentation/analytics-reports/privacy, it meant that the data was anonymized/encoded such that it would be close to the actual Sessions number, or if it meant it only counted opt-in users to compute the Sessions numer.

Thank you for your time, I hope I made myself as clear as possible. Ask me if you want more precisions or if you don't understand my question.

It's only opt-in users. But you can see the % who have opted in, so you can extrapolate to the total number of sessions if you want.

(What does "MAU" mean?)

User privacy in report data
 
 
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