CAS Latency legend

[kencl]

I'm trying to understand the different values in the CAS Latency spec so I can set them in BIOS. My BIOS has 14 different fields which can be configured!

My RAM, the F3-12800CL7D-4GBECO, is 7-8-7-24-2N.

I did look around the G.Skill website for a legend first, but couldn't find one...

Thanks!

Just to be clear, I want to know what each of those numbers (and the 2N) represent.