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- By CategoryMixed GasesGas Comp Amount179.4875000 99.9825000 99.9862500 99.9791600 88.8240000 99.9950000 99.9070000 550.0000000 69.6000000 99.9895800 99.7100000Gas Comp 2PPM AMMONIAGas Comp 1PPM CARBON MONOXIDE PPM OXYGEN NITROGEN METHANE