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Table 1 Descriptive statistics of calibration and validation sets

From: Rapid tannin profiling of tree fodders using untargeted mid-infrared spectroscopy and partial least squares regression

 

N

Calibration set

N

Validation set

Mean

SD

Median

Range

Mean

SD

Median

Range

%CT (HBAI)

90

4.22

2.25

3.50

9.19

30

4.49

2.39

3.64

8.42

%CT (Thiolysis)

89

4.34

2.47

3.85

11.3

30

4.56

2.58

3.93

10.9

mDP

88

4.45

1.30

4.23

6.24

30

4.54

1.31

4.34

5.61

PC

90

66.7

28.7

63.0

82.7

30

64.6

28.7

55.9

77.4

cis

90

52.7

32.6

45.3

94.6

30

54.4

31.1

47.8

92.9

  1. N number of samples, SD standard deviation, %CT content of condensed tannins (%Dry Matter) measured by HCl-butanol-acetone-iron assay (HBAI) or thiolysis-HPLC (Thiolysis), mDP mean degree of polymerisation, PC % procyanidin units (% condensed tannins), cis % cis units (% condensed tannins)