Figure 2. Calibration parabola build from 86 (V, Δφ) data points extracted from a homogenous region consisting of a single ITO grain.

The 95% prediction bounds are shown in the plot. Fitted values are: a = 0.383 [°V⁻²] and b = 0.18 [V]. Standard errors based on 95% prediction bounds are: E_a = 0.004 [°V⁻²] and E_b = 0.01 [V].