CFM 56 3 (B1, B2, C3) - Classic:
N1 21.5%
N2 60.3%
EGT 475°C - variable
FF 326 KGPH
The real thing is NEVER corresponding, however that's what the (old and more precise) book says.
This is valid for LOW IDLE on the ground.
HIGH IDLE N1 is roughly 10% higher, higher with higher speed and temp, lower with lower speed and temp.
LEM