Fig. 4

Position of the cross-point and the value of R_rel. The data shown in the figure is the mean (central point) ± standard deviation (bar). The best fitting functions to describe the relationship of R_rel and the position of the ablation zone (k₂–k₅) are shown with the coefficient of determination in each figure. a The relationship between k₁ and R_{rel 1–2} from electrode pair 1–2, b the relationship between k₂ and R_{rel 1–2} from electrode pair 1–2, c the relationship between k_3,4 and R_{rel 1–4/3–2} from electrode pair 1–4 and 3–2, d the relationship between k₅ and R_{rel 3–4} from electrode pair 3–4