Table 3 Error of frequency of subjects and range of acceptable error in the Y-axis

 Subject 1

0

0.9

0

0.8

−3.2

2.9

0.8

6.2

4.4

 Subject 2

0.5

1.1

−0.1

0.6

−3.4

−4.4

−4.4

−1.1

−2.2

 Subject 3

0.2

0.7

0.7

−0.1

−4.2

0.7

9.4

1.6

3.1

 Subject 4

−1.1

0.4

1.4

−1.8

−6.2

0

−2.5

0.5

−0.9

 Subject 5

−1.4

−1.5

−2.8

−4.8

−1.7

−1.6

−2.4

3.7

4.9

 Subject 6

0.2

1.3

−5.9

−9

−5.4

2.2

−3.8

1

−2.3

 Subject 7

−0.6

0.4

2.4

0.4

−6.2

−0.4

−1.4

1.4

−1.3

 Subject 8

−1.2

−0.9

−2.1

−2.2

−4.9

−1.3

0.5

−2.3

−1.5

 Subject 9

0.9

1.3

0.7

−3.9

−0.7

−0.7

−2.7

−1.4

−1.6

 Subject 10

−2

−0.8

−3.2

−1.8

−4.7

−3.6

−5.6

−2.1

−2.3

 Subject 11

−0.9

−0.3

−1.1

−3

0.6

0.3

3.9

0.1

1.5

 Subject 12

0.8

1

0.8

1.6

−6.5

−4

−5.2

−0.7

−3.1

 Subject 13

−0.5

0

−2.6

−0.4

1.1

1.6

0.3

−0.2

0.7

 Subject 14

−0.2

1.3

−0.2

−1.2

−5.2

−4

−2.3

0

−1.8

Mean

−0.38

0.35

−0.86

−1.77

−3.61

−0.88

−1.10

0.48

−0.17

Mean (absolute value)

0.75

0.85

1.71

2.26

3.86

1.98

3.23

1.59

2.26

SD

0.87

0.92

2.23

2.79

2.53

2.40

3.98

2.29

2.64

Percent of acceptable error <0.5 mm

43 %

29 %

21 %

36 %

0 %

21 %

14 %

29 %

0 %

21 %

Percent of acceptable error <1 mm

71 %

64 %

43 %

36 %

14 %

36 %

21 %

43 %

14 %

38 %

Percent of acceptable error <2 mm

100 %

100 %

100 %

100 %

57 %

57 %

28 %

57 %

28 %

61 %