What is the range when BIOS.SysSecurity.AcPwrRcvryDelay set to Random?

BIOS.SysSecurity.AcPwrRcvryDelay can be set to Immediate|Random|User. Help says Random is random without specifying a range of random.

What is the range for AcPwrRcvryDelay when set to random? 

AcPwrRcvryDelay help:
Allows staggering of power up after AC power is restored to the system.    When set to Immediate, there is no delay for power-up.  When set to Random, the system creates a random delay for power-up.  When set to User Defined, the system delays power-up by that amount. The system supported user defined power-up delay is defined by the User Defined Delay field.
Arguments : Immediate|Random|User