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- By CategoryMixed GasesGas Comp Amount299.9700000 99.9910000 99.9960000 79.0000000 77.5000000 99.9600000 79.3800000 99.9975000 99.8400000Gas Comp Amount122.5000000Gas Comp 2CARBON MONOXIDE 18 R134A TETRAFLUOROETHANE NITROGEN NITRIC OXIDE PPM ETHANOL AMMONIA