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- By CategoryMixed GasesGas Comp Amount220.9000000Gas Comp Amount179.1000000 22.5000000 99.9514000 81.8470000 98.9320000 99.8375000 76.9890000 83.7325000 99.9715000 78.6500000 79.4875000 97.6000000Gas Comp 1PPM NITROGEN DIOXIDE OXYGEN NITROGEN ARGON