How long will someone serve for burglary? In Arizona or on average.?

Ok so my cousin was arrested a few days ago for armed robbery as well as possession of a firearm. He claims he was not armed so I am guessing it will be knocked back to burglary. I believe he was stealing from a commercial business of some sort. He is a second time offender. He was convicted of armed robbery 10 years ago. This will be his second offense. How long will he likely serve? He is thinking he might come home on probation as soon as his first court appearance. In a few days.Which doesn't sound right to me since the first court appearance is not to hand out your sentence right? I am really curious when he will get out.