Here some informations from the programmer of SpeedFAN. http://www.almico.com/speedfan.php

Code:
SpeedFan publishes a Shared Memory area.
Using Delphi convention:

    TSharedMem=packed record
                  version:word;
                  flags  :word;
                  MemSize:integer;
                  handle :THandle;
                  NumTemps:word;
                  NumFans :word;
                  NumVolts:word;
                  temps:array[0..31] of integer;
                  fans :array[0..31] of integer;                 
                  volts:array[0..31] of integer;
                end;

The name of the shared memory area is "SFSharedMemory_ALM".
INTEGER is a 32 bit signed integer.
Consider that these specs were written a long time ago and might change in the future, but, currently, they are working fine ever since :-)
Im no programmer and hope these information hand for an implementation in RR.