Table 5. Observations (mean and SD) for loading components by total log concentration and the number of assortments in a load. | |||||||||||||
Loading component |
Total log concentration (m^{3}ob (100 m)^{–1}) |
Number of assortments in a load | |||||||||||
Balanced two-way ANOVA | Supplements for one-way ANOVA | ||||||||||||
1 | 3 | 2 | 5 | ||||||||||
Mean | SD | n | Mean | SD | n | Mean | SD | n | Mean | SD | n | ||
Number of loading stops per load | 6.4 | 30.0^{A,a} | 0 | 3 | 28.3^{A,a} | 2.9 | 3 | 19.7^{b} | 1.5 | 3 | |||
19.2 | 29.7^{A,a} | 0.6 | 3 | 12.7^{C,b} | 0.6 | 3 | 16.0^{c} | 1.0 | 3 | ||||
32.0 | 18.7^{B} | 2.5 | 3 | 7.0^{D} | 1.0 | 3 | |||||||
Time consumption (PMmin) for a loading stop | 6.4 | 0.26^{AB,a} | 0.07 | 90 | 0.33^{BC,b} | 0.10 | 85 | 0.56^{c} | 0.25 | 59 | |||
19.2 | 0.24^{A,a} | 0.06 | 89 | 0.70^{D,b} | 0.25 | 38 | 0.52^{c} | 0.18 | 48 | ||||
32.0 | 0.40^{C} | 0.19 | 55 | 1.26^{E} | 0.50 | 21 | |||||||
Number of loaded piles per stop | 6.4 | 1.0^{A,a} | 0 | 90 | 1.1^{A,a} | 0.2 | 85 | 1.5^{b} | 0.5 | 59 | |||
19.2 | 1.0^{A,a} | 0.1 | 89 | 2.4^{C,b} | 0.9 | 38 | 1.9^{c} | 0.3 | 48 | ||||
32.0 | 1.6^{B} | 0.7 | 55 | 4.3^{D} | 1.6 | 21 | |||||||
Number of crane cycles per loading stop | 6.4 | 1.0^{A,a} | 0 | 90 | 1.1^{A,a} | 0.2 | 85 | 1.5^{b} | 0.5 | 59 | |||
19.2 | 1.0^{A,a} | 0.1 | 89 | 2.4^{C,b} | 0.9 | 38 | 1.9^{c} | 0.3 | 48 | ||||
32.0 | 1.4^{B} | 0.5 | 55 | 4.1^{D} | 1.3 | 21 | |||||||
Number of piles per crane cycle | 6.4 | 1.0^{A} | 0 | 90 | 1.0^{A} | 0 | 90 | 1.0 | 0 | 90 | |||
19.2 | 1.0^{A} | 0 | 90 | 1.0^{A} | 0 | 90 | 1.0 | 0 | 90 | ||||
32.0 | 1.13^{B} | 0.33 | 80 | 1.05^{A} | 0.21 | 86 | |||||||
Time consumption (PMmin) for a loading crane cycle | No effect | 0.24^{a} | 0.06 | 260 | 0.29^{b} | 0.08 | 266 | 0.27^{b} | 0.09 | 90 | 0.35^{c} | 0.13 | 90 |
Different superscript uppercase letters within loading components indicate significant differences (p < 0.05) between the six combinations of total log concentration by 1 and 3 assortments (Two-way ANOVA with Tukey test). When there was no effect from total log concentration (see Table 3), data within 1 and 3 assortments were pooled. Different superscript lowercase letters within rows indicate significant differences (p < 0.05) (One-way ANOVA with Tukey test). |