Table 3.
Dark coloration distribution on surfaces of composite board made from elephant dung fibers

Citric content (wt%)	Temperature (°C)
	180	200
	0	2.06 ± 0.57%	3.42 ± 0.92%
10	9.82 ± 0.67%	14.18 ± 2.29%
20	28.08 ± 3.10%	36.93 ± 1.07%
30	28.78 ± 2.63%	43.02 ± 3.45%