Table 4 Summary of the ROM quantification given by the participants (N=15)

Presented angle [^∘]

15

50

40

110

90

85

Mean absolute error [^∘]

4.7

8.3

7.0

4.0

2.3

3.3

4.9

Absolute precision error [^∘]

6.5

8.3

8.4

5.6

4.0

5.6

6.4

pROM

Presented angle [^∘]

0

20

30

120

110

105

Mean absolute error [^∘]

2.0

5.7

6.3

2.0

5.3

8.0

4.9

Absolute precision error [^∘]

3.7

7.3

7.1

6.5

7.0

7.4

6.5