From the maintenance manual:
Spoiler deflection/aileron deflection kinematic law on ground without
aerodynamic load kinematic is linear :
- spoiler extension is initiated for 2.5° aileron/tab input lever
deflection
- spoiler maximum deflection 57° for 14.9° aileron/tab input lever
deflection (corresponding to an aileron 14° deflection and a spring
tab 2,25° deflection).