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Heritage Science

Table 3 Summary of the estimated coefficients for the regression analysis of kΔR-444

From: Factorial experimentation on photodegradation of historical paper by polychromatic visible radiation

Variables

Estimated coefficients

SE

t-stat

p value

Intercept

0.0014

0.0007

2.1239

0.1009

[O2]

0.0178

0.0024

7.4737

0.0017

RH

0.0099

0.0010

10.4210

0.0005

Ev

1.8300  ×  10–7

3.1700  ×  10−8

5.7895

0.0044

  1. SE represents the standard error of the estimated coefficients, t-stat and p value indicate the significance of the estimated coefficients, RMSE represents the root mean square error of the fitted models, and R2 indicates the goodness-of-fit of the fitted models
  2. Number of observations: 8, error degrees of freedom: 4, RMSE: 0.0007, R2  =  0.98, p value  =  0.0007
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