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- By CategoryMixed GasesGas Comp Amount220.9000000Gas Comp Amount199.9799000 81.8785000 79.1000000 99.9250000 99.8375000 99.9997000 99.9972500 99.9982000 2.1000000 17.5000000 53.0575000 99.9965000 99.9514000 79.1400000Gas Comp 1PPM NITROGEN DIOXIDE NITROGEN OXYGEN ARGON