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Table 4 The absorbance values and range analysis from orthogonal experiment

From: Extraction of eco-friendly natural dyes from mango leaves and their application on silk fabric

No. A B C Absorbance at 380 nm
1. 1 1 1 0.802
2 1 2 2 0.805
3. 1 3 3 0.779
4. 2 1 2 0.903
5. 2 2 3 0.859
6. 2 3 1 0.94
7. 3 1 3 0.856
8. 3 2 1 1.041
9. 3 3 2 0.999
  A B C  
K 1 0.795 0.849 0.988  
K 2 0.910 0.917 0.906  
K 3 0.981 0.903 0.789  
R 0.185 0.014 0.199  
  1. K 1, K 2, K 3—the average value of each factor when its level is 1, 2, or 3. R—the difference between the maximum and minimum results for each factor
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