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
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 |