No

t, h

R, kΩ

σ, (Ωm)−1

1

0

73.5

1.96 × 10−3

2

1

85

1.69 × 10−3

3

2

107

1.35 × 10−3

4

3

134

1.075 × 10−3

5

4

313

0.46 × 10−3

6

4.5

15 × 103

9.6 × 10−6

7

5

24 × 103

6 × 10−6

8

5.5

30 × 103

4.8 × 10−6