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- By CategoryMixed GasesGas Comp Amount30.3500000Gas Comp Amount199.9715000 99.9615000 79.4900000 88.9711000 40.0000000 99.9000000 99.9175000 81.6400000 96.0000000 83.6690000 99.9749500 99.8375000 900.0000000 2.5000000 79.2000000Gas Comp 1PPM CARBON MONOXIDE ETHANE HELIUM NITROGEN METHANE