Table 1 Depths and lengths of 21 cracks used to evaluate the accuracy of the growth models

1

1–3-1^a

1.72

90

1.87

2

1–3-2

1.67

75

1.82

3

1–6-1

2.04

26.5

2.14

4

1–6-2

2.72

37.5

3.17

5

1–6-3

2.29

37

2.79

6

1–9-1

2.80

36

5.20

7

1–9-2

2.73

37

5.93

8

1–12-1

2.11

37

2.16

9

1–12-2

1.73

26

2.18

10

2–3-1

1.70

36

1.79

11

2–3-2

2.31

46

2.44

12

2–3-3

1.80

36

1.93

13

2–3-4

2.85

46

3.25

14

2–6-1

1.90

36

2.00

15

2–6-2

2.30

46

2.60

16

2–6-3

1.90

36

2.00

17

2–6-4

2.50

46

2.72

18

2–12-1

2.10

36

2.23

19

2–12-2

3.00

46

3.22

20

2–12-3

2.20

36

2.27

21

2–12-4

3.00

46

3.30