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Table 3 Outputs of the TS multiple regression model with age, DP and protein as independent variables

From: Non-destructive collection survey of the historical Classense Library. Part I: Paper characterisation

Variable

Coef. value

Standard error

p–value

Intercept

15.77055

2.08439

8.2854E−13

DP

0.01592

0.00098

2.54946E−40

Protein (%)

2.19776

0.22617

5.03676E−19

Age

0.00685

0.00285

0.01714