# How to interpret a False Discovery Rate plot

It is the first time that I am trying to calculate the FDR and I use the fdrtool package in R. I want both, local and tail area graphs and I think the third subplots of these examples summarise the information. However, I have a rather basic question:

How can I better interpret these plots while taking into account the size of my data and the eta0 value?

I haven't managed to find any detailed interpretation of these plots, generated from this package.

Any hints will be appreciated.