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Color distance (ΔE) calculated for all possible pairs of samples. Samples 1–8 belong to the FDOE; RIB is the reference biscuit.
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | RIB | |
|---|---|---|---|---|---|---|---|---|---|
| 1 | |||||||||
| 2 | 0.43 | ||||||||
| 3 | 1.87 | 1.59 | |||||||
| 4 | 1.51 | 1.23 | 0.37 | ||||||
| 5 | 3.23 | 3.29 | 4.41 | 4.71 | |||||
| 6 | 3.13 | 3.23 | 4.36 | 4.67 | 0.42 | ||||
| 7 | 2.23 | 2.28 | 3.36 | 3.66 | 1.03 | 1.14 | |||
| 8 | 1.86 | 1.93 | 2.97 | 3.25 | 1.50 | 1.66 | 0.53 | ||
| RIB | 3.82 | 3.99 | 3.60 | 3.62 | 6.70 | 6.89 | 5.46 | 5.90 |
