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- By CategoryMixed GasesGas Comp Amount220.9000000Gas Comp Amount199.5500000 87.4760000 80.4375000 8.0000000 79.1000000 99.9799000 53.7860000 99.9991000 81.6375000 83.6690000 83.8950000 81.8470000 99.9965000 78.4000000 75.9800000Gas Comp 1PPM NITROGEN DIOXIDE NITROGEN ARGON OXYGEN