Fig. 3.

Reliability R of the Type I (a) and Type II (c) ML models is plotted in the left columns against the SD of the external noise that is either convoluted (solid) or white (dashed). R is plotted against τ for Type I (b) and Type II (d) in the right columns. Parameter values are given in Table 1. The coefficient ${\delta }_1$ of the intrinsic noise is 2 μA/cm² for a–b, and 5 μA/cm² for c–d. The coefficient ${\delta }_2$ of the external noise is 0.91 μA/cm² in b and 1.64 μA/cm² in d