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- By CategoryMixed GasesGas Comp Amount40.3500000Gas Comp Amount196.0000000 99.8920000 79.4900000 99.9900000 99.8375000 88.9711000 81.6400000 99.9715000 2.5000000 40.0000000 99.9749500 99.9615000 99.9175000 99.9000000Gas Comp 1PPM CARBON MONOXIDE NITROGEN ETHANE METHANE