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- By CategoryMixed GasesGas Comp Amount220.9000000Gas Comp Amount199.9937000 80.4375000 81.6400000 99.9969000 99.9986500 20.0000000 79.4960000 17.5000000 99.5000000 99.9395000 79.1000000Gas Comp 1PPM NITROGEN DIOXIDE OXYGEN NITROGEN ARGON