Fig. 9. The effect of recording time (t), expressed as multiples of roundtrip travel time in the lead cable (t_cable), on the estimated electrical conductivity (_t) using the series resistors model with (a) cable resistance R_cable measured and probe constant ß fitted, (b) R_cable and ß fitted, or using the Castiglione–Shouse method with (c) actual ß determined, and (d) ß fitted.