Table 4. Molecular Composition of Desorbed Gas Received during Canister Core Desorption Measurements^a.

					hydrocarbon distribution in CG (vol %)
sample no.	CG (vol %)	CO2 (vol %)	N2 (vol %)	O2 (vol %)	CH4	C2H6	C3H8	iC4H10	nC4H10	C1/(C2 + C3)	δ13C1 (‰)	GSI
CG-1103	83.9	5.2	10.5	0.4	93.8	1.5	0.2	0.1	0.1	55.2	–38.2	106.4
CG-1104	86.7	3.5	9.6	0.2	94.3	1.7	0.3	0.2	0.1	47.2	–41.2	74.1
CG-1105	88.4	3.2	8.2	0.2	95.7	1.6	0.2	0.3	0.2	53.2	–37.1	75.2
CG-1106	89.9	2.9	6.9	0.3	95.9	1.4	0.1	0.1	0.3	63.9	–25.4	108.8
CG-1107	91.2	2.4	6.2	0.2	96.3	1.3	0.1	0.4	0.1	68.8	–28.7	109.2
CG-1108	86.5	4.0	8.9	0.6	92.8	1.8	0.4	0.2	0.1	42.2	–51.7	63.2
CG-1109	87.2	5.1	7.3	0.4	94.3	1.6	0.2	0.3	0.2	52.4	–45.8	74.1
CG-1110	87.9	4.8	7.0	0.3	96.2	1.4	0.2	0.6	0.3	60.1	–39.6	65.5
CG-1111	90.5	3.2	6.0	0.3	94.2	1.6	0.2	0.4	0.1	52.3	–54.2	74.0
CG-1112	91.6	2.8	5.4	0.2	93.4	1.2	0.3	0.2	0.1	62.3	–42.9	119.3
CG-1113	92.8	3.1	3.8	0.3	94.9	1.9	0.5	0.1	0.2	39.5	–34.6	57.0
CG-1114	93.2	2.6	4.0	0.2	95.1	1.2	0.8	0.6	0.2	47.6	–31.4	53.9
CG-1115	93.6	2.7	3.6	0.1	96.2	1.8	0.2	0.2	0.3	48.1	–32.7	65.5
CG-1116	89.4	5.2	5.0	0.4	96.1	1.4	0.7	0.4	0.1	45.8	–64.9	61.3
CG-1117	88.6	3.4	7.2	0.8	96.6	1.7	0.2	0.5	0.3	50.8	–61.4	58.0
CG-1118	90.1	3.2	6.4	0.3	96.3	1.2	0.6	0.3	0.1	53.5	–58.3	81.9
CG-1119	87.2	4.2	8.4	0.2	89.4	1.6	0.2	0.2	0.2	49.7	–48.7	76.2
CG-1120	88.4	3.6	7.4	0.6	93.6	1.4	0.5	0.6	0.2	49.3	–58.4	56.2
CG-1121	89.9	2.4	7.5	0.2	94.3	1.5	0.7	0.5	0.4	42.9	–52.1	45.9
CG-1122	91.6	2.9	5.3	0.2	95.2	1.4	0.6	0.3	0.1	47.6	–58.2	69.4
CG-1123	90.5	2.5	6.7	0.3	95.6	1.3	0.5	0.2	0.3	53.1	–41.2	75.1

^aExplanations: CH₄—methane, C₂H₆—ethane, C₂H₄—ethylene, C₃H₆—propylene, C₃H₈—propane, iC₄H₁₀—ibutane, nC₄H₁₀—nbutane, and GSI—gas stability index (CH₄/(C₂H₆+C₃H₆+C₃H₈+iC₄H₁₀ + nC₄H₁₀).