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. 2017 Oct 26;12(10):e0186751. doi: 10.1371/journal.pone.0186751

Table 1. Characteristics of the nitrogen concentration of the samples.

Samples Observations Maximum/g·kg-1 Minimum/g·kg-1 Mean/g·kg-1 Standard deviation/g·kg-1
Total 100 34.75 26.84 30.56 1.69
Calibration 75 34.49 26.84 30.55 1.65
Validation 25 34.75 27.04 30.56 1.82