Table 6 Mean values and standard deviation of ΔE₀₀ and ΔE_ab of paired research sites (RS) for each specimen set (1–10 and I-X), calculated from non-corrected (NC) wavelengths and calibration factor calculated from the average wavelength of 10 specimens, separately, CO 1–10 and CO I-X

RS1-RS2

1–10

I-X

15.8 (1.6) b

13.8 (2.7) b

2.2 (1.7) a

3.7 (1.2) a

3.0 (1.3) a

2.1 (1.8) a

22.2 (2.0) b

20.0 (3.3) b

3.0 (2.3) a

4.9 (2.0) a

4.3 (2.0) a

3.1 (2.0) a

RS1-RS3

1–10

I-X

10.6 (0.9) b

9.6 (1.8) b

1.4 (0.9) a

2.3 (0.9) a

1.9 (0.7) a

1.6 (1.1) a

14.2 (1.0) b

13.3 (2.1) b

1.8 (1.3) a

3.0 (1.6) a

2.4 (1.1) a

2.2 (1.7) a

RS2-RS3

1–10

I-X

5.4 (0.8) b

4.4 (0.9) b

0.9 (0.6) a

1.6 (0.3) a

1.3 (0.6) a

0.6 (0.6) a

8.1 (1.2) b

6.9 (1.3) b

1.3 (0.9) a

2.0 (0.5) a

2.0 (0.9) a

0.9 (0.9) a