Table 1 Conductivity values of the volume conductor geometry

$G_{\mathcal{A}}$

0.2 S/m

$G_{\mathcal{U}}$

1.74 S/m

$G_{\mathcal{F}}$

0.2 S/m

σ _el

0.68 S/m

σ _et

0.22 S/m

ς

0.8