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- By CategoryMixed GasesGas Comp Amount220.9000000Gas Comp Amount199.9880000 99.9967000 99.9960000 79.2000000 99.9825000 99.9791600 99.9937000 99.9650000 79.1000000 99.9499500 99.9010000 99.9370000 99.9965900Gas Comp 1PPM NITROGEN DIOXIDE NITROGEN OXYGEN ARGON