Table 1 Distribution of CIELAB coordinates (ranges are calculated from the Raw values in table S2; n = 30 for each treatment.)

From: Reflectance spectroscopy reveals mineralogy and preservation of ceramics from the Bidong Shipwreck

Treatment

L* (min-max)

a* (min-max)

b* (min-max)

a*-b* correlation (R2)

Exterior

37–76

− 1.1 to 16.2

3.2–27.0

0.40

Interior

38–77

− 0.8 to 16.2

2.1–20.1

0.50

Powder

48–87

− 0.1 to 22.9

3.2–23.7

0.80

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