Unable to comprehend graph of aqueous lithium bromide vapour pressure

$\ce{LiBr}$ $Vp$ chart:


<http://www.mediafire.com/view/x77zc8wj11gthsj/LiBr_Vp.jpg>


or


<http://www.mediafire.com/view/u4dnocvbsf3atmu/Useful_Chart_LiBr.pdf>


Lecture in question (p.13)


<http://www.mediafire.com/view/gly78yz339hv1x1/RAC_Lecture_15.pdf>


![enter image description here](https://i.stack.imgur.com/HXjFV.png)


In the lecture it says that at this temperature & at this concentration crystallisation will occur... however how can this be ascertained using the chart? I do know how to read such Duhring plots..


