The CCA sensor linearity at ambient temperature is ±2 %FSD or ±10 % of the measured value up to 80 %FSD and ±15 % of the measured value from 80...100 %FSD, which ever is greater.
The following graph is based on the 0...100 %v/v sensor, data for 24 sensors:
FSD: Full Scale Deflection (full scale of the sensor).
%v/v: %volume/voltage.