(a) Test data for Group 1 (with high-resistance cylinder)
(b) Test data for Group 1 (without high-resistance cylinder)
(c) Test data for Group 2 (with high-resistance cylinder)
(d) Test data for Group 2 (without high-resistance cylinder)
Figure 5: (a) Measured voltage between electrodes for Group 1 after being supplied with electricity (with high-resistance cylinder). (b) Measured voltage between electrodes for Group 1 after being supplied with electricity (without high-resistance cylinder). (c) Measured voltage between electrodes for Group 2 after being supplied with electricity (with high-resistance cylinder). (d) Measured voltage between electrodes for Group 2 after being supplied with electricity (without high-resistance cylinder).