Who can read the phase diagram for alloy stuff?I miss data?

Apr 2012
Hi guys

sadly I noticed too late that I have noted some unknown numbers here regarding to a uni task and I can't figure what's related to what. BUT who is familiar to alloy phase diagrams can possibly read it easily

here is the diagram:


here used notes on T1 and T2


so far I could figure 96 is the distance between each horizontal line between solid and liquid border?
can you get what each numbers refers to? I'd be thankful