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- By CategoryMixed GasesGas Comp Amount220.9000000Gas Comp Amount197.9600000 99.9899880 99.9020000 75.9800000 99.9969000 99.9775000 99.9997500 99.4000000 99.9939000 99.9000000 99.6894000 88.0000000 78.4490000 20.8000000 79.1000000Gas Comp 1PPM NITROGEN DIOXIDE ARGON OXYGEN NITROGEN