Definitive Estimate and Control Estimate

Hi,
Please let know if any one has the exact accuracy range for a Control Estimate. Some sources say +1% to +5% while others say 0% to 7%. Also is it correct to say Definitive Estimate has an accuracy range of -10% to +10%. I am preparing for my PMP and would highly appreciate if you can please give me the answers. Thank you!
KAB

Definite estimates range : -5& to +10% . PMBOK Page No:201