Table 7. Observations (mean and SD) for unloading components by the number of assortments in a load.
Number of assortments in a load	Number of unloading stops per load			Time consumption for an unloading stop (PMmin)			Number of unloading crane cycles per load			Number of crane cycles per unloading stop			Time consumption for an unloading crane cycle (PMmin)
	Mean	SD	n	Mean	SD	n	Mean	SD	n	Mean	SD	n	Mean	SD	n
1	1a	0	9	2.73a	0.20	9	9.1a	0.8	9	9.1a	0.8	9	0.27a	0.07	82
2	2.7b	0.6	3	1.38ab	0.75	8	9.7a	0.6	3	4.6b	2.3	8	0.34a	0.16	29
3	4.8c	0.8	9	1.47b	1.43	43	13.1b	0.9	9	2.7c	1.6	43	0.51b	0.34	118
5	9.0d	1.7	3	1.26b	1.09	27	18.7c	2.5	3	2.1c	1.6	27	0.60b	0.37	56
Within columns, different superscripted letters indicate significant differences (p < 0.05) (one-way ANOVA with Tukey test).