Skip to main content

Official Journal of the Japan Wood Research Society

Table 3 Correlation coefficients between internal bond strength and climate factors including PC1 score and weathering intensity (WI) at the eight sites

From: Effectiveness of principal component analysis for analyzing particleboard subjected to outdoor exposure

 

Correlation coefficient

Mean

SD

COV

Exposure term (year)

1

2

3

4

5

T

−0.851

−0.809

−0.990

−0.934

−0.806

−0.878

0.081

−9.23

S

−0.687

−0.700

−0.839

−0.655

−0.863

−0.749

0.095

−12.7

P

−0.918

−0.801

−0.691

−0.740

−0.650

−0.760

0.105

−13.8

PC1 score

−0.927

−0.875

−0.965

−0.887

−0.886

−0.908

0.038

−4.15

WI

−0.951

−0.884

−0.921

−0.907

−0.845

−0.902

0.040

−4.42

  1. WI is shown in Ref. [6]
  2. T annual mean temperature, S annual sunshine duration, P annual precipitation, PC1 score score of first principal component, SD standard deviation, COV coefficient of variance