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- By CategoryMixed GasesGas Comp Amount40.3500000Gas Comp Amount179.4900000 96.0000000 2.5000000 99.6670000 99.8860000 99.9175000 99.9983000 81.6400000 99.9715000 99.7030000 99.9899000 88.0000000 40.0000000 99.9595000 99.5000000Gas Comp 1NITROGEN PPM CARBON MONOXIDE HELIUM ETHANE METHANE