How to draw a photoelectron spectrum with ionization energies?

I understand the basic concepts of the photoelectron spectrum. However, say I am instructed to draw the PES graph for Silicon. I know how to figure out the relative peaks based on its configuration. But when arranging them on the graph, how can I accurately place them where they should be in ionization energy? That is, the x-axis is labeled 300.0, 200.0, 100.0, etc. Without any other information (and the usage of a periodic table only) how do I know where to put the peaks among the increments? Is there a way to figure out the ionization energies for each peak? 


If this is NOT possible, please explain why. 


