Height of Pegs

[2950's Hippie]

Does anyone know the height of each row of pegs from the floor?
My team has been unable to find this information on the FIRST website.
Thanks!

[Polaris395]

http://usfirst.org/uploadedFiles/Robotics_Programs/FRC/Game_and_Season__Info/2011_Assets/2011%20Team%20Field%20Elements.pdf

Some mathematics required.

[2950's Hippie]

Thank you!