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Official Journal of the Japan Wood Research Society

Journal of Wood Science Cover Image

Table 3 The significance of the effect of individual factors on changes in a* value

From: Impact of thermal modification on color and chemical changes of spruce and oak wood

Monitored factor Sum of squares Degree of freedom Variance Fisher’s
F test
Significance level p
Absolute term 4047.534 1 4047.534 14944.73 ***
Wood species “WS” 33.605 1 33.605 124.08 ***
Thermal modification “TM” 127.347 3 42.449 156.74 ***
WS × TM 189.098 3 63.033 232.74 ***
Error 19.500 72 0.271   
  1. NS not significant
  2. ***Significant, p < 0.005