Table 2. Density profile of woodceramics according to the chaff mixing ratio of board

Mixing ratio (sawdust:chaff:charcoal)	Dave (kg/m3)	Dmin (kg/m3)	Dmax left (kg/m3)	Dmax right (kg/m3)	Dmin/Dave (%)
50:35:5	600.72	524.05	672.47	725.43	87.23
50:30:10	658.21	591.18	755.29	745.03	89.81
50:25:15	679.81	618.67	788.48	820.18	91.00
50:20:20	648.88	571.42	783.60	778.31	88.06

D_ave: average of density, D_min: minimum of density, D_max: maximum of density, D_min/D_ave: minimum of density to average of density ratio.