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- By CategoryMixed GasesGas Comp 4NITROGENGas Comp Amount181.8470000 99.9940000 79.1000000 92.7820000 20.0000000 99.9175000 21.0000000 81.9910000 99.5500000 97.9600000 99.9200000 99.9860000Gas Comp 1NITROGEN ARGON OXYGEN PPM NITROGEN DIOXIDE