Table 4. Petrographic Analysis of the Four Coals in Their Respective Size Fractions.

maceral analysis
	Antioquia			Cundinamarca			Patia			Valle
	<6 mm	6–19 mm	>19 mm	<6 mm	6–19 mm	>19 mm	<6 mm	6–19 mm	>19 mm	<6 mm	6–19 mm	>19 mm
vitrinite	95.4	96.0	99.0	90.0	77.6	36.0	99.0	97.0	91.0	99.2	99.4	97.6
liptinite	0.0	0.4	0.0	0.4	3.0	2.0	0.4	0.0	2.4	0.2	0.0	0.4
semifusinite	4.0	3.0	0.6	4.0	11.0	44.0	0.0	3.0	4.6	0.4	0.6	1.2
fusinite	0.6	0.6	0.4	5.6	8.4	18.0	0.6	0.0	2.0	0.2	0.0	0.8
vitrinite reflectance analysis
	Antioquia			Cundinamarca			Patia			Valle
	<6 mm	6–19 mm	>19 mm	<6 mm	6–19 mm	>19 mm	<6 mm	6–19 mm	>19 mm	<6 mm	6–19 mm	>19 mm
average	0.43	0.43	0.36	0.68	0.90	0.68	0.57	0.53	0.48	0.95	0.62	0.73
minimum	0.37	0.39	0.26	0.43	0.47	0.48	0.43	0.41	0.35	0.49	0.48	0.44
maximum	0.50	0.51	0.44	1.04	2.19	1.14	0.73	0.66	0.65	1.53	0.84	1.39
SD	0.03	0.03	0.05	0.164	0.218	0.113	0.08	0.05	0.07	0.28	0.06	0.17