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- By CategoryMixed GasesGas Comp Amount220.9000000Gas Comp Amount181.8470000 99.9992000 8.0000000 79.1000000 78.4000000 99.9899000 99.9799000 77.3210000 99.9775000 77.3200000 99.9500000 99.5500000Gas Comp 1PPM NITROGEN DIOXIDE OXYGEN NITROGEN ARGON