Coal and Gangue Underground Pneumatic Separation Effect Evaluation Influenced by Different Airflow Directions

Table 6

Range analysis.

	7.30	4.13	7.05	4.17	5.85	3.00
	4.88	2.15	5.23	2.16	5.75	2.49
	4.8	1.63	4.7	1.48	5.38	2.43
	0.83	0.83	0.78	0.90	0.16	0.19