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- By CategoryMixed GasesGas Comp Amount220.9000000Gas Comp Amount180.6375000 99.9986500 99.9972000 99.9997500 90.4000000 87.9890000 85.5000000 99.7100000 99.8860000 20.8000000 79.1000000 99.9815000 86.2500000 99.8120000 99.9100000Gas Comp 1PPM NITROGEN DIOXIDE OXYGEN ARGON NITROGEN