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Official Journal of the Japan Wood Research Society

Table 2 Descriptive statistics for the percent distribution of willow and fir chips (by weight) between the various particle size categories

From: Effects of microwave irradiation on the moisture content of various wood chip fractions obtained from different tree species

Species Sieve size mm Mean % Min. % Max. % Range % Variance SD % CV %
Willow 0–3.15 3.09 3.09 3.10 0.01 0.00 0.00 0.05
3.15–8.0 19.40 19.02 19.77 0.75 0.28 0.53 2.74
8.0–16.0 62.60 61.21 63.98 2.77 3.82 1.96 3.12
16.0–31.50 11.09 9.37 12.80 3.44 5.90 2.43 21.92
31.5–45.0 2.48 2.13 2.84 0.71 0.25 0.50 20.28
45.0–63.0 1.34 0.99 1.70 0.71 0.25 0.50 37.54
Fir 0–3.15 5.49 5.10 5.87 0.77 0.30 0.55 9.95
3.15–8.0 33.17 31.95 34.38 2.43 2.94 1.72 5.17
8.0–16.0 48.96 48.41 49.50 1.09 0.59 0.77 1.57
16.0–31.5 10.06 9.23 10.88 1.65 1.37 1.17 11.63
31.5–45.0 1.48 1.17 1.79 0.62 0.19 0.44 29.39
45.0–63.0 0.85 0.77 0.93 0.16 0.01 0.11 13.42
  1. SD standard deviation, CV coefficient of variation