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Table 2 Documents required for the fitness-for-use assessment workshops, with combinations of aspects of degradation: tears (T), missing pieces (MP) and discolouration (D), as required by the CCD response surface design, with three repetitions of the centre point

From: Damage function for historic paper. Part I: Fitness for use

Document no. T MP D
1 0 0 0
2 2 0 0
3 0 2 0
4 2 2 0
5 0 0 2
6 2 0 2
7 0 2 2
8 2 2 2
9 0 1 1
10 2 1 1
11 1 0 1
12 1 2 1
13 1 1 0
14 1 1 2
15 1 1 1
16 1 1 1
17 1 1 1